blob: afadba99f7b8286e287a2a88703026319f78924b [file] [log] [blame]
Auke Kok9a799d72007-09-15 14:07:45 -07001/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
Mark Rustad37689012016-01-07 10:13:03 -08004 Copyright(c) 1999 - 2016 Intel Corporation.
Auke Kok9a799d72007-09-15 14:07:45 -07005
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
Jacob Kellerb89aae72014-02-22 01:23:50 +000023 Linux NICS <linux.nics@intel.com>
Auke Kok9a799d72007-09-15 14:07:45 -070024 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include <linux/types.h>
30#include <linux/module.h>
31#include <linux/pci.h>
32#include <linux/netdevice.h>
33#include <linux/vmalloc.h>
34#include <linux/string.h>
35#include <linux/in.h>
Alexey Dobriyana6b7a402011-06-06 10:43:46 +000036#include <linux/interrupt.h>
Auke Kok9a799d72007-09-15 14:07:45 -070037#include <linux/ip.h>
38#include <linux/tcp.h>
Alexander Duyck897ab152011-05-27 05:31:47 +000039#include <linux/sctp.h>
Lucy Liu60127862009-07-22 14:07:33 +000040#include <linux/pkt_sched.h>
Auke Kok9a799d72007-09-15 14:07:45 -070041#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
Auke Kok9a799d72007-09-15 14:07:45 -070043#include <net/checksum.h>
44#include <net/ip6_checksum.h>
Martin K Petersenc762dff2014-11-15 14:24:51 +000045#include <linux/etherdevice.h>
Auke Kok9a799d72007-09-15 14:07:45 -070046#include <linux/ethtool.h>
Jiri Pirko01789342011-08-16 06:29:00 +000047#include <linux/if.h>
Auke Kok9a799d72007-09-15 14:07:45 -070048#include <linux/if_vlan.h>
John Fastabend2a47fa42013-11-06 09:54:52 -080049#include <linux/if_macvlan.h>
John Fastabend815cccb2012-10-24 08:13:09 +000050#include <linux/if_bridge.h>
Paul Gortmaker70c71602011-05-22 16:47:17 -040051#include <linux/prefetch.h>
John Fastabend92470802017-04-24 03:30:17 -070052#include <linux/bpf.h>
53#include <linux/bpf_trace.h>
54#include <linux/atomic.h>
Yi Zoueacd73f2009-05-13 13:11:06 +000055#include <scsi/fc/fc_fcoe.h>
Alexander Duyckb3a49552016-06-16 12:22:19 -070056#include <net/udp_tunnel.h>
John Fastabendb82b17d2016-02-16 21:18:53 -080057#include <net/pkt_cls.h>
58#include <net/tc_act/tc_gact.h>
Sridhar Samudrala947f8a42016-04-05 10:39:07 -070059#include <net/tc_act/tc_mirred.h>
Sowmini Varadhan9f3c7502016-10-24 15:36:39 -070060#include <net/vxlan.h>
Scott Peterson2a205252016-11-18 11:25:42 -080061#include <net/mpls.h>
Auke Kok9a799d72007-09-15 14:07:45 -070062
63#include "ixgbe.h"
64#include "ixgbe_common.h"
Don Skidmoreee5f7842009-11-06 12:56:20 +000065#include "ixgbe_dcb_82599.h"
Greg Rose1cdd1ec2010-01-09 02:26:46 +000066#include "ixgbe_sriov.h"
John Fastabendb82b17d2016-02-16 21:18:53 -080067#include "ixgbe_model.h"
Auke Kok9a799d72007-09-15 14:07:45 -070068
69char ixgbe_driver_name[] = "ixgbe";
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070070static const char ixgbe_driver_string[] =
Joe Perchese8e9f692010-09-07 21:34:53 +000071 "Intel(R) 10 Gigabit PCI Express Network Driver";
Jeff Kirsher8af3c332012-02-18 07:08:14 +000072#ifdef IXGBE_FCOE
Neerav Parikhea818752012-01-04 20:23:40 +000073char ixgbe_default_device_descr[] =
74 "Intel(R) 10 Gigabit Network Connection";
Jeff Kirsher8af3c332012-02-18 07:08:14 +000075#else
76static char ixgbe_default_device_descr[] =
77 "Intel(R) 10 Gigabit Network Connection";
78#endif
Tony Nguyen01ec5522017-05-18 14:55:07 -070079#define DRV_VERSION "5.1.0-k"
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070080const char ixgbe_driver_version[] = DRV_VERSION;
Don Skidmorea52055e2011-02-23 09:58:39 +000081static const char ixgbe_copyright[] =
Mark Rustad49425df2016-04-01 12:18:09 -070082 "Copyright (c) 1999-2016 Intel Corporation.";
Auke Kok9a799d72007-09-15 14:07:45 -070083
Don Skidmoref44e7512015-06-09 16:36:23 -070084static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter";
85
Auke Kok9a799d72007-09-15 14:07:45 -070086static const struct ixgbe_info *ixgbe_info_tbl[] = {
Don Skidmore6a14ee02014-12-05 03:59:50 +000087 [board_82598] = &ixgbe_82598_info,
88 [board_82599] = &ixgbe_82599_info,
89 [board_X540] = &ixgbe_X540_info,
90 [board_X550] = &ixgbe_X550_info,
91 [board_X550EM_x] = &ixgbe_X550EM_x_info,
Paul Greenwalt8dc963e2017-04-13 08:07:07 -040092 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info,
Mark Rustad49425df2016-04-01 12:18:09 -070093 [board_x550em_a] = &ixgbe_x550em_a_info,
Mark Rustadb3eb4e12016-12-14 11:02:16 -080094 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info,
Auke Kok9a799d72007-09-15 14:07:45 -070095};
96
97/* ixgbe_pci_tbl - PCI Device ID Table
98 *
99 * Wildcard entries (PCI_ANY_ID) should come last
100 * Last entry must be all 0s
101 *
102 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
103 * Class, Class Mask, private data (not used) }
104 */
Benoit Taine9baa3c32014-08-08 15:56:03 +0200105static const struct pci_device_id ixgbe_pci_tbl[] = {
Alexander Duyck54239c62011-07-15 03:06:06 +0000106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 },
107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 },
108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 },
109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 },
110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 },
111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 },
112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 },
113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 },
114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 },
115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 },
116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 },
117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 },
118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 },
119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 },
120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 },
121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 },
122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 },
123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 },
124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 },
125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 },
126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 },
127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 },
128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 },
129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 },
130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 },
131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 },
Don Skidmore8f583322013-07-27 06:25:38 +0000132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 },
Emil Tantilov7d145282011-09-08 08:30:14 +0000133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 },
Emil Tantilov9e791e42011-11-04 06:43:29 +0000134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 },
joshua.a.hay@intel.comdf376f02012-09-21 00:08:21 +0000135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 },
Don Skidmore6a14ee02014-12-05 03:59:50 +0000136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550},
Mark Rustada711ad82016-03-21 11:21:31 -0700137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550},
Don Skidmore6a14ee02014-12-05 03:59:50 +0000138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x},
Don Skidmore18e01ee2016-12-30 21:07:58 -0500139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x},
Don Skidmore6a14ee02014-12-05 03:59:50 +0000140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x},
Don Skidmorededa5622015-06-09 17:39:46 -0700141 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x},
Mark Rustad018d7142015-08-08 16:19:19 -0700142 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x},
Paul Greenwalt8dc963e2017-04-13 08:07:07 -0400143 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw},
Mark Rustadf572b2c2016-04-01 12:18:46 -0700144 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a },
145 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a },
Mark Rustad49425df2016-04-01 12:18:09 -0700146 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a },
Mark Rustad200157c2016-04-01 12:18:40 -0700147 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a },
148 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a },
Don Skidmore92ed8432016-08-17 20:34:40 -0400149 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a},
Mark Rustad2d40cd12016-04-01 12:18:35 -0700150 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a },
Mark Rustadb3eb4e12016-12-14 11:02:16 -0800151 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw },
152 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw },
Auke Kok9a799d72007-09-15 14:07:45 -0700153 /* required last entry */
154 {0, }
155};
156MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
157
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400158#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800159static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +0000160 void *p);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800161static struct notifier_block dca_notifier = {
162 .notifier_call = ixgbe_notify_dca,
163 .next = NULL,
164 .priority = 0
165};
166#endif
167
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000168#ifdef CONFIG_PCI_IOV
169static unsigned int max_vfs;
170module_param(max_vfs, uint, 0);
Joe Perchese8e9f692010-09-07 21:34:53 +0000171MODULE_PARM_DESC(max_vfs,
Jacob Keller170e8542013-11-09 04:52:32 -0800172 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000173#endif /* CONFIG_PCI_IOV */
174
Peter P Waskiewicz Jr8ef78ad2012-02-01 09:19:21 +0000175static unsigned int allow_unsupported_sfp;
176module_param(allow_unsupported_sfp, uint, 0);
177MODULE_PARM_DESC(allow_unsupported_sfp,
178 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
179
stephen hemmingerb3f4d592012-03-13 06:04:20 +0000180#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
181static int debug = -1;
182module_param(debug, int, 0);
183MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
184
Auke Kok9a799d72007-09-15 14:07:45 -0700185MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
186MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
187MODULE_LICENSE("GPL");
188MODULE_VERSION(DRV_VERSION);
189
Mark Rustad780484d2015-10-21 17:21:10 -0700190static struct workqueue_struct *ixgbe_wq;
191
Mark Rustad14438462014-02-28 15:48:57 -0800192static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev);
Mark Rustadb3eb4e12016-12-14 11:02:16 -0800193static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *);
Mark Rustad14438462014-02-28 15:48:57 -0800194
Alexander Duyck68ae7422017-11-22 10:56:52 -0800195static const struct net_device_ops ixgbe_netdev_ops;
196
197static bool netif_is_ixgbe(struct net_device *dev)
198{
199 return dev && (dev->netdev_ops == &ixgbe_netdev_ops);
200}
201
Jacob Kellerb8e82002013-04-09 07:20:09 +0000202static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
203 u32 reg, u16 *value)
204{
Jacob Kellerb8e82002013-04-09 07:20:09 +0000205 struct pci_dev *parent_dev;
206 struct pci_bus *parent_bus;
207
208 parent_bus = adapter->pdev->bus->parent;
209 if (!parent_bus)
210 return -1;
211
212 parent_dev = parent_bus->self;
213 if (!parent_dev)
214 return -1;
215
Yijing Wangc0798ed2013-09-04 17:30:08 +0000216 if (!pci_is_pcie(parent_dev))
Jacob Kellerb8e82002013-04-09 07:20:09 +0000217 return -1;
218
Yijing Wangc0798ed2013-09-04 17:30:08 +0000219 pcie_capability_read_word(parent_dev, reg, value);
Mark Rustad14438462014-02-28 15:48:57 -0800220 if (*value == IXGBE_FAILED_READ_CFG_WORD &&
221 ixgbe_check_cfg_remove(&adapter->hw, parent_dev))
222 return -1;
Jacob Kellerb8e82002013-04-09 07:20:09 +0000223 return 0;
224}
225
226static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter)
227{
228 struct ixgbe_hw *hw = &adapter->hw;
229 u16 link_status = 0;
230 int err;
231
232 hw->bus.type = ixgbe_bus_type_pci_express;
233
234 /* Get the negotiated link width and speed from PCI config space of the
235 * parent, as this device is behind a switch
236 */
237 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status);
238
239 /* assume caller will handle error case */
240 if (err)
241 return err;
242
243 hw->bus.width = ixgbe_convert_bus_width(link_status);
244 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
245
246 return 0;
247}
248
Jacob Kellere027d1a2013-07-31 06:53:31 +0000249/**
250 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent
251 * @hw: hw specific details
252 *
253 * This function is used by probe to determine whether a device's PCI-Express
254 * bandwidth details should be gathered from the parent bus instead of from the
255 * device. Used to ensure that various locations all have the correct device ID
256 * checks.
257 */
258static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw)
259{
260 switch (hw->device_id) {
261 case IXGBE_DEV_ID_82599_SFP_SF_QP:
Don Skidmore8f583322013-07-27 06:25:38 +0000262 case IXGBE_DEV_ID_82599_QSFP_SF_QP:
Jacob Kellere027d1a2013-07-31 06:53:31 +0000263 return true;
264 default:
265 return false;
266 }
267}
268
269static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
270 int expected_gts)
271{
Don Skidmoref9328bc2015-06-18 13:24:06 -0400272 struct ixgbe_hw *hw = &adapter->hw;
Jacob Kellere027d1a2013-07-31 06:53:31 +0000273 int max_gts = 0;
274 enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
275 enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
276 struct pci_dev *pdev;
277
Don Skidmoref9328bc2015-06-18 13:24:06 -0400278 /* Some devices are not connected over PCIe and thus do not negotiate
279 * speed. These devices do not have valid bus info, and thus any report
280 * we generate may not be correct.
281 */
282 if (hw->bus.type == ixgbe_bus_type_internal)
283 return;
284
Jacob Keller56d13922015-06-10 11:44:45 -0700285 /* determine whether to use the parent device */
Jacob Kellere027d1a2013-07-31 06:53:31 +0000286 if (ixgbe_pcie_from_parent(&adapter->hw))
287 pdev = adapter->pdev->bus->parent->self;
288 else
289 pdev = adapter->pdev;
290
291 if (pcie_get_minimum_link(pdev, &speed, &width) ||
292 speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) {
293 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
294 return;
295 }
296
297 switch (speed) {
298 case PCIE_SPEED_2_5GT:
299 /* 8b/10b encoding reduces max throughput by 20% */
300 max_gts = 2 * width;
301 break;
302 case PCIE_SPEED_5_0GT:
303 /* 8b/10b encoding reduces max throughput by 20% */
304 max_gts = 4 * width;
305 break;
306 case PCIE_SPEED_8_0GT:
Jacob Keller9f0a4332013-10-18 05:09:19 +0000307 /* 128b/130b encoding reduces throughput by less than 2% */
Jacob Kellere027d1a2013-07-31 06:53:31 +0000308 max_gts = 8 * width;
309 break;
310 default:
311 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
312 return;
313 }
314
315 e_dev_info("PCI Express bandwidth of %dGT/s available\n",
316 max_gts);
317 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
318 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" :
319 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" :
320 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" :
321 "Unknown"),
322 width,
323 (speed == PCIE_SPEED_2_5GT ? "20%" :
324 speed == PCIE_SPEED_5_0GT ? "20%" :
Jacob Keller9f0a4332013-10-18 05:09:19 +0000325 speed == PCIE_SPEED_8_0GT ? "<2%" :
Jacob Kellere027d1a2013-07-31 06:53:31 +0000326 "Unknown"));
327
328 if (max_gts < expected_gts) {
329 e_dev_warn("This is not sufficient for optimal performance of this card.\n");
330 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
331 expected_gts);
332 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
333 }
334}
335
Alexander Duyck70864002011-04-27 09:13:56 +0000336static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
337{
338 if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
Mark Rustad09f40ae2014-01-14 18:53:11 -0800339 !test_bit(__IXGBE_REMOVING, &adapter->state) &&
Alexander Duyck70864002011-04-27 09:13:56 +0000340 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
Mark Rustad780484d2015-10-21 17:21:10 -0700341 queue_work(ixgbe_wq, &adapter->service_task);
Alexander Duyck70864002011-04-27 09:13:56 +0000342}
343
Mark Rustad2a1a0912014-01-14 18:53:15 -0800344static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
345{
346 struct ixgbe_adapter *adapter = hw->back;
347
348 if (!hw->hw_addr)
349 return;
350 hw->hw_addr = NULL;
351 e_dev_err("Adapter removed\n");
Mark Rustad58cf6632014-03-12 00:38:40 +0000352 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
353 ixgbe_service_event_schedule(adapter);
Mark Rustad2a1a0912014-01-14 18:53:15 -0800354}
355
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400356static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg)
Mark Rustad2a1a0912014-01-14 18:53:15 -0800357{
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400358 u8 __iomem *reg_addr;
Mark Rustad2a1a0912014-01-14 18:53:15 -0800359 u32 value;
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400360 int i;
Mark Rustad2a1a0912014-01-14 18:53:15 -0800361
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400362 reg_addr = READ_ONCE(hw->hw_addr);
363 if (ixgbe_removed(reg_addr))
364 return IXGBE_FAILED_READ_REG;
365
366 /* Register read of 0xFFFFFFF can indicate the adapter has been removed,
367 * so perform several status register reads to determine if the adapter
368 * has been removed.
Mark Rustad2a1a0912014-01-14 18:53:15 -0800369 */
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400370 for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) {
371 value = readl(reg_addr + IXGBE_STATUS);
372 if (value != IXGBE_FAILED_READ_REG)
373 break;
374 mdelay(3);
Mark Rustad2a1a0912014-01-14 18:53:15 -0800375 }
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400376
Mark Rustad2a1a0912014-01-14 18:53:15 -0800377 if (value == IXGBE_FAILED_READ_REG)
378 ixgbe_remove_adapter(hw);
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400379 else
380 value = readl(reg_addr + reg);
381 return value;
Mark Rustad2a1a0912014-01-14 18:53:15 -0800382}
383
Mark Rustadf8e24722014-03-18 07:03:40 +0000384/**
385 * ixgbe_read_reg - Read from device register
386 * @hw: hw specific details
387 * @reg: offset of register to read
388 *
389 * Returns : value read or IXGBE_FAILED_READ_REG if removed
390 *
391 * This function is used to read device registers. It checks for device
392 * removal by confirming any read that returns all ones by checking the
393 * status register value for all ones. This function avoids reading from
394 * the hardware if a removal was previously detected in which case it
395 * returns IXGBE_FAILED_READ_REG (all ones).
396 */
397u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg)
398{
Mark Rutland6aa7de02017-10-23 14:07:29 -0700399 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr);
Mark Rustadf8e24722014-03-18 07:03:40 +0000400 u32 value;
401
402 if (ixgbe_removed(reg_addr))
403 return IXGBE_FAILED_READ_REG;
Mark Rustad2f2219b2016-04-07 10:43:50 -0700404 if (unlikely(hw->phy.nw_mng_if_sel &
Tony Nguyen48301cf2017-06-07 14:36:19 -0700405 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) {
Mark Rustad2f2219b2016-04-07 10:43:50 -0700406 struct ixgbe_adapter *adapter;
407 int i;
408
409 for (i = 0; i < 200; ++i) {
410 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY);
411 if (likely(!value))
412 goto writes_completed;
413 if (value == IXGBE_FAILED_READ_REG) {
414 ixgbe_remove_adapter(hw);
415 return IXGBE_FAILED_READ_REG;
416 }
417 udelay(5);
418 }
419
420 adapter = hw->back;
421 e_warn(hw, "register writes incomplete %08x\n", value);
422 }
423
424writes_completed:
Mark Rustadf8e24722014-03-18 07:03:40 +0000425 value = readl(reg_addr + reg);
426 if (unlikely(value == IXGBE_FAILED_READ_REG))
Paul Greenwalt1aa37842018-03-12 09:22:55 -0400427 value = ixgbe_check_remove(hw, reg);
Mark Rustadf8e24722014-03-18 07:03:40 +0000428 return value;
429}
430
Mark Rustad14438462014-02-28 15:48:57 -0800431static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev)
432{
433 u16 value;
434
435 pci_read_config_word(pdev, PCI_VENDOR_ID, &value);
436 if (value == IXGBE_FAILED_READ_CFG_WORD) {
437 ixgbe_remove_adapter(hw);
438 return true;
439 }
440 return false;
441}
442
443u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg)
444{
445 struct ixgbe_adapter *adapter = hw->back;
446 u16 value;
447
448 if (ixgbe_removed(hw->hw_addr))
449 return IXGBE_FAILED_READ_CFG_WORD;
450 pci_read_config_word(adapter->pdev, reg, &value);
451 if (value == IXGBE_FAILED_READ_CFG_WORD &&
452 ixgbe_check_cfg_remove(hw, adapter->pdev))
453 return IXGBE_FAILED_READ_CFG_WORD;
454 return value;
455}
456
457#ifdef CONFIG_PCI_IOV
458static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg)
459{
460 struct ixgbe_adapter *adapter = hw->back;
461 u32 value;
462
463 if (ixgbe_removed(hw->hw_addr))
464 return IXGBE_FAILED_READ_CFG_DWORD;
465 pci_read_config_dword(adapter->pdev, reg, &value);
466 if (value == IXGBE_FAILED_READ_CFG_DWORD &&
467 ixgbe_check_cfg_remove(hw, adapter->pdev))
468 return IXGBE_FAILED_READ_CFG_DWORD;
469 return value;
470}
471#endif /* CONFIG_PCI_IOV */
472
Jacob Kellered192312014-02-22 01:23:53 +0000473void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value)
474{
475 struct ixgbe_adapter *adapter = hw->back;
476
477 if (ixgbe_removed(hw->hw_addr))
478 return;
479 pci_write_config_word(adapter->pdev, reg, value);
480}
481
Alexander Duyck70864002011-04-27 09:13:56 +0000482static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
483{
484 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
485
Stephen Hemminger52f33af2011-12-22 16:34:52 +0000486 /* flush memory to make sure state is correct before next watchdog */
Peter Zijlstra4e857c52014-03-17 18:06:10 +0100487 smp_mb__before_atomic();
Alexander Duyck70864002011-04-27 09:13:56 +0000488 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
489}
490
Taku Izumidcd79ae2010-04-27 14:39:53 +0000491struct ixgbe_reg_info {
492 u32 ofs;
493 char *name;
494};
495
496static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
497
498 /* General Registers */
499 {IXGBE_CTRL, "CTRL"},
500 {IXGBE_STATUS, "STATUS"},
501 {IXGBE_CTRL_EXT, "CTRL_EXT"},
502
503 /* Interrupt Registers */
504 {IXGBE_EICR, "EICR"},
505
506 /* RX Registers */
507 {IXGBE_SRRCTL(0), "SRRCTL"},
508 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
509 {IXGBE_RDLEN(0), "RDLEN"},
510 {IXGBE_RDH(0), "RDH"},
511 {IXGBE_RDT(0), "RDT"},
512 {IXGBE_RXDCTL(0), "RXDCTL"},
513 {IXGBE_RDBAL(0), "RDBAL"},
514 {IXGBE_RDBAH(0), "RDBAH"},
515
516 /* TX Registers */
517 {IXGBE_TDBAL(0), "TDBAL"},
518 {IXGBE_TDBAH(0), "TDBAH"},
519 {IXGBE_TDLEN(0), "TDLEN"},
520 {IXGBE_TDH(0), "TDH"},
521 {IXGBE_TDT(0), "TDT"},
522 {IXGBE_TXDCTL(0), "TXDCTL"},
523
524 /* List Terminator */
Mark Rustadca8dfe22014-07-24 06:19:24 +0000525 { .name = NULL }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000526};
527
528
529/*
530 * ixgbe_regdump - register printout routine
531 */
532static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
533{
Joe Perches332f2352017-01-03 07:28:11 -0800534 int i;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000535 char rname[16];
536 u32 regs[64];
537
538 switch (reginfo->ofs) {
539 case IXGBE_SRRCTL(0):
540 for (i = 0; i < 64; i++)
541 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
542 break;
543 case IXGBE_DCA_RXCTRL(0):
544 for (i = 0; i < 64; i++)
545 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
546 break;
547 case IXGBE_RDLEN(0):
548 for (i = 0; i < 64; i++)
549 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
550 break;
551 case IXGBE_RDH(0):
552 for (i = 0; i < 64; i++)
553 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
554 break;
555 case IXGBE_RDT(0):
556 for (i = 0; i < 64; i++)
557 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
558 break;
559 case IXGBE_RXDCTL(0):
560 for (i = 0; i < 64; i++)
561 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
562 break;
563 case IXGBE_RDBAL(0):
564 for (i = 0; i < 64; i++)
565 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
566 break;
567 case IXGBE_RDBAH(0):
568 for (i = 0; i < 64; i++)
569 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
570 break;
571 case IXGBE_TDBAL(0):
572 for (i = 0; i < 64; i++)
573 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
574 break;
575 case IXGBE_TDBAH(0):
576 for (i = 0; i < 64; i++)
577 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
578 break;
579 case IXGBE_TDLEN(0):
580 for (i = 0; i < 64; i++)
581 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
582 break;
583 case IXGBE_TDH(0):
584 for (i = 0; i < 64; i++)
585 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
586 break;
587 case IXGBE_TDT(0):
588 for (i = 0; i < 64; i++)
589 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
590 break;
591 case IXGBE_TXDCTL(0):
592 for (i = 0; i < 64; i++)
593 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
594 break;
595 default:
Joe Perches332f2352017-01-03 07:28:11 -0800596 pr_info("%-15s %08x\n",
597 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs));
Taku Izumidcd79ae2010-04-27 14:39:53 +0000598 return;
599 }
600
Joe Perches332f2352017-01-03 07:28:11 -0800601 i = 0;
602 while (i < 64) {
603 int j;
604 char buf[9 * 8 + 1];
605 char *p = buf;
606
607 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000608 for (j = 0; j < 8; j++)
Joe Perches332f2352017-01-03 07:28:11 -0800609 p += sprintf(p, " %08x", regs[i++]);
610 pr_err("%-15s%s\n", rname, buf);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000611 }
612
613}
614
John Fastabend33fdc822017-04-24 03:30:18 -0700615static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n)
616{
617 struct ixgbe_tx_buffer *tx_buffer;
618
619 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean];
620 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
621 n, ring->next_to_use, ring->next_to_clean,
622 (u64)dma_unmap_addr(tx_buffer, dma),
623 dma_unmap_len(tx_buffer, len),
624 tx_buffer->next_to_watch,
625 (u64)tx_buffer->time_stamp);
626}
627
Taku Izumidcd79ae2010-04-27 14:39:53 +0000628/*
629 * ixgbe_dump - Print registers, tx-rings and rx-rings
630 */
631static void ixgbe_dump(struct ixgbe_adapter *adapter)
632{
633 struct net_device *netdev = adapter->netdev;
634 struct ixgbe_hw *hw = &adapter->hw;
635 struct ixgbe_reg_info *reginfo;
636 int n = 0;
John Fastabend33fdc822017-04-24 03:30:18 -0700637 struct ixgbe_ring *ring;
Alexander Duyck729739b2012-02-08 07:51:06 +0000638 struct ixgbe_tx_buffer *tx_buffer;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000639 union ixgbe_adv_tx_desc *tx_desc;
640 struct my_u0 { u64 a; u64 b; } *u0;
641 struct ixgbe_ring *rx_ring;
642 union ixgbe_adv_rx_desc *rx_desc;
643 struct ixgbe_rx_buffer *rx_buffer_info;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000644 int i = 0;
645
646 if (!netif_msg_hw(adapter))
647 return;
648
649 /* Print netdevice Info */
650 if (netdev) {
651 dev_info(&adapter->pdev->dev, "Net device Info\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000652 pr_info("Device Name state "
Tobias Klauser4a7c9722017-01-18 17:45:01 +0100653 "trans_start\n");
654 pr_info("%-15s %016lX %016lX\n",
Joe Perchesc7689572010-09-07 21:35:17 +0000655 netdev->name,
656 netdev->state,
Tobias Klauser4a7c9722017-01-18 17:45:01 +0100657 dev_trans_start(netdev));
Taku Izumidcd79ae2010-04-27 14:39:53 +0000658 }
659
660 /* Print Registers */
661 dev_info(&adapter->pdev->dev, "Register Dump\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000662 pr_info(" Register Name Value\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000663 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
664 reginfo->name; reginfo++) {
665 ixgbe_regdump(hw, reginfo);
666 }
667
668 /* Print TX Ring Summary */
669 if (!netdev || !netif_running(netdev))
Mark Rustade90dd262014-07-22 06:51:08 +0000670 return;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000671
672 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000673 pr_info(" %s %s %s %s\n",
674 "Queue [NTU] [NTC] [bi(ntc)->dma ]",
675 "leng", "ntw", "timestamp");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000676 for (n = 0; n < adapter->num_tx_queues; n++) {
John Fastabend33fdc822017-04-24 03:30:18 -0700677 ring = adapter->tx_ring[n];
678 ixgbe_print_buffer(ring, n);
679 }
680
681 for (n = 0; n < adapter->num_xdp_queues; n++) {
682 ring = adapter->xdp_ring[n];
683 ixgbe_print_buffer(ring, n);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000684 }
685
686 /* Print TX Rings */
687 if (!netif_msg_tx_done(adapter))
688 goto rx_ring_summary;
689
690 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
691
692 /* Transmit Descriptor Formats
693 *
Josh Hay39ac8682012-09-26 05:59:36 +0000694 * 82598 Advanced Transmit Descriptor
Taku Izumidcd79ae2010-04-27 14:39:53 +0000695 * +--------------------------------------------------------------+
696 * 0 | Buffer Address [63:0] |
697 * +--------------------------------------------------------------+
Josh Hay39ac8682012-09-26 05:59:36 +0000698 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
Taku Izumidcd79ae2010-04-27 14:39:53 +0000699 * +--------------------------------------------------------------+
700 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
Josh Hay39ac8682012-09-26 05:59:36 +0000701 *
702 * 82598 Advanced Transmit Descriptor (Write-Back Format)
703 * +--------------------------------------------------------------+
704 * 0 | RSV [63:0] |
705 * +--------------------------------------------------------------+
706 * 8 | RSV | STA | NXTSEQ |
707 * +--------------------------------------------------------------+
708 * 63 36 35 32 31 0
709 *
710 * 82599+ Advanced Transmit Descriptor
711 * +--------------------------------------------------------------+
712 * 0 | Buffer Address [63:0] |
713 * +--------------------------------------------------------------+
714 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
715 * +--------------------------------------------------------------+
716 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
717 *
718 * 82599+ Advanced Transmit Descriptor (Write-Back Format)
719 * +--------------------------------------------------------------+
720 * 0 | RSV [63:0] |
721 * +--------------------------------------------------------------+
722 * 8 | RSV | STA | RSV |
723 * +--------------------------------------------------------------+
724 * 63 36 35 32 31 0
Taku Izumidcd79ae2010-04-27 14:39:53 +0000725 */
726
727 for (n = 0; n < adapter->num_tx_queues; n++) {
John Fastabend33fdc822017-04-24 03:30:18 -0700728 ring = adapter->tx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000729 pr_info("------------------------------------\n");
John Fastabend33fdc822017-04-24 03:30:18 -0700730 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index);
Joe Perchesc7689572010-09-07 21:35:17 +0000731 pr_info("------------------------------------\n");
Josh Hay8ad88e32012-09-26 05:59:41 +0000732 pr_info("%s%s %s %s %s %s\n",
733 "T [desc] [address 63:0 ] ",
734 "[PlPOIdStDDt Ln] [bi->dma ] ",
735 "leng", "ntw", "timestamp", "bi->skb");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000736
John Fastabend33fdc822017-04-24 03:30:18 -0700737 for (i = 0; ring->desc && (i < ring->count); i++) {
738 tx_desc = IXGBE_TX_DESC(ring, i);
739 tx_buffer = &ring->tx_buffer_info[i];
Taku Izumidcd79ae2010-04-27 14:39:53 +0000740 u0 = (struct my_u0 *)tx_desc;
Josh Hay8ad88e32012-09-26 05:59:41 +0000741 if (dma_unmap_len(tx_buffer, len) > 0) {
Joe Perches332f2352017-01-03 07:28:11 -0800742 const char *ring_desc;
743
John Fastabend33fdc822017-04-24 03:30:18 -0700744 if (i == ring->next_to_use &&
745 i == ring->next_to_clean)
Joe Perches332f2352017-01-03 07:28:11 -0800746 ring_desc = " NTC/U";
John Fastabend33fdc822017-04-24 03:30:18 -0700747 else if (i == ring->next_to_use)
Joe Perches332f2352017-01-03 07:28:11 -0800748 ring_desc = " NTU";
John Fastabend33fdc822017-04-24 03:30:18 -0700749 else if (i == ring->next_to_clean)
Joe Perches332f2352017-01-03 07:28:11 -0800750 ring_desc = " NTC";
751 else
752 ring_desc = "";
753 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s",
Josh Hay8ad88e32012-09-26 05:59:41 +0000754 i,
755 le64_to_cpu(u0->a),
756 le64_to_cpu(u0->b),
757 (u64)dma_unmap_addr(tx_buffer, dma),
Alexander Duyck729739b2012-02-08 07:51:06 +0000758 dma_unmap_len(tx_buffer, len),
Josh Hay8ad88e32012-09-26 05:59:41 +0000759 tx_buffer->next_to_watch,
760 (u64)tx_buffer->time_stamp,
Joe Perches332f2352017-01-03 07:28:11 -0800761 tx_buffer->skb,
762 ring_desc);
Josh Hay8ad88e32012-09-26 05:59:41 +0000763
764 if (netif_msg_pktdata(adapter) &&
765 tx_buffer->skb)
766 print_hex_dump(KERN_INFO, "",
767 DUMP_PREFIX_ADDRESS, 16, 1,
768 tx_buffer->skb->data,
769 dma_unmap_len(tx_buffer, len),
770 true);
771 }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000772 }
773 }
774
775 /* Print RX Rings Summary */
776rx_ring_summary:
777 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000778 pr_info("Queue [NTU] [NTC]\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000779 for (n = 0; n < adapter->num_rx_queues; n++) {
780 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000781 pr_info("%5d %5X %5X\n",
782 n, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000783 }
784
785 /* Print RX Rings */
786 if (!netif_msg_rx_status(adapter))
Mark Rustade90dd262014-07-22 06:51:08 +0000787 return;
Taku Izumidcd79ae2010-04-27 14:39:53 +0000788
789 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
790
Josh Hay39ac8682012-09-26 05:59:36 +0000791 /* Receive Descriptor Formats
792 *
793 * 82598 Advanced Receive Descriptor (Read) Format
Taku Izumidcd79ae2010-04-27 14:39:53 +0000794 * 63 1 0
795 * +-----------------------------------------------------+
796 * 0 | Packet Buffer Address [63:1] |A0/NSE|
797 * +----------------------------------------------+------+
798 * 8 | Header Buffer Address [63:1] | DD |
799 * +-----------------------------------------------------+
800 *
801 *
Josh Hay39ac8682012-09-26 05:59:36 +0000802 * 82598 Advanced Receive Descriptor (Write-Back) Format
Taku Izumidcd79ae2010-04-27 14:39:53 +0000803 *
804 * 63 48 47 32 31 30 21 20 16 15 4 3 0
805 * +------------------------------------------------------+
Josh Hay39ac8682012-09-26 05:59:36 +0000806 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
807 * | Packet | IP | | | | Type | Type |
808 * | Checksum | Ident | | | | | |
Taku Izumidcd79ae2010-04-27 14:39:53 +0000809 * +------------------------------------------------------+
810 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
811 * +------------------------------------------------------+
812 * 63 48 47 32 31 20 19 0
Josh Hay39ac8682012-09-26 05:59:36 +0000813 *
814 * 82599+ Advanced Receive Descriptor (Read) Format
815 * 63 1 0
816 * +-----------------------------------------------------+
817 * 0 | Packet Buffer Address [63:1] |A0/NSE|
818 * +----------------------------------------------+------+
819 * 8 | Header Buffer Address [63:1] | DD |
820 * +-----------------------------------------------------+
821 *
822 *
823 * 82599+ Advanced Receive Descriptor (Write-Back) Format
824 *
825 * 63 48 47 32 31 30 21 20 17 16 4 3 0
826 * +------------------------------------------------------+
827 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
828 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
829 * |/ Flow Dir Flt ID | | | | | |
830 * +------------------------------------------------------+
831 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
832 * +------------------------------------------------------+
833 * 63 48 47 32 31 20 19 0
Taku Izumidcd79ae2010-04-27 14:39:53 +0000834 */
Josh Hay39ac8682012-09-26 05:59:36 +0000835
Taku Izumidcd79ae2010-04-27 14:39:53 +0000836 for (n = 0; n < adapter->num_rx_queues; n++) {
837 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000838 pr_info("------------------------------------\n");
839 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
840 pr_info("------------------------------------\n");
Joe Perches332f2352017-01-03 07:28:11 -0800841 pr_info("%s%s%s\n",
Josh Hay8ad88e32012-09-26 05:59:41 +0000842 "R [desc] [ PktBuf A0] ",
843 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
Joe Perches332f2352017-01-03 07:28:11 -0800844 "<-- Adv Rx Read format");
845 pr_info("%s%s%s\n",
Josh Hay8ad88e32012-09-26 05:59:41 +0000846 "RWB[desc] [PcsmIpSHl PtRs] ",
847 "[vl er S cks ln] ---------------- [bi->skb ] ",
Joe Perches332f2352017-01-03 07:28:11 -0800848 "<-- Adv Rx Write-Back format");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000849
850 for (i = 0; i < rx_ring->count; i++) {
Joe Perches332f2352017-01-03 07:28:11 -0800851 const char *ring_desc;
852
853 if (i == rx_ring->next_to_use)
854 ring_desc = " NTU";
855 else if (i == rx_ring->next_to_clean)
856 ring_desc = " NTC";
857 else
858 ring_desc = "";
859
Taku Izumidcd79ae2010-04-27 14:39:53 +0000860 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Alexander Duycke4f74022012-01-31 02:59:44 +0000861 rx_desc = IXGBE_RX_DESC(rx_ring, i);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000862 u0 = (struct my_u0 *)rx_desc;
Alexander Duyck18a8cc92017-03-02 15:01:36 -0800863 if (rx_desc->wb.upper.length) {
Taku Izumidcd79ae2010-04-27 14:39:53 +0000864 /* Descriptor Done */
Joe Perches332f2352017-01-03 07:28:11 -0800865 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n",
866 i,
Taku Izumidcd79ae2010-04-27 14:39:53 +0000867 le64_to_cpu(u0->a),
868 le64_to_cpu(u0->b),
Joe Perches332f2352017-01-03 07:28:11 -0800869 rx_buffer_info->skb,
870 ring_desc);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000871 } else {
Joe Perches332f2352017-01-03 07:28:11 -0800872 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n",
873 i,
Taku Izumidcd79ae2010-04-27 14:39:53 +0000874 le64_to_cpu(u0->a),
875 le64_to_cpu(u0->b),
876 (u64)rx_buffer_info->dma,
Joe Perches332f2352017-01-03 07:28:11 -0800877 rx_buffer_info->skb,
878 ring_desc);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000879
Emil Tantilov9c50c032012-07-26 01:21:24 +0000880 if (netif_msg_pktdata(adapter) &&
881 rx_buffer_info->dma) {
Taku Izumidcd79ae2010-04-27 14:39:53 +0000882 print_hex_dump(KERN_INFO, "",
883 DUMP_PREFIX_ADDRESS, 16, 1,
Emil Tantilov9c50c032012-07-26 01:21:24 +0000884 page_address(rx_buffer_info->page) +
885 rx_buffer_info->page_offset,
Alexander Duyckf8003262012-03-03 02:35:52 +0000886 ixgbe_rx_bufsz(rx_ring), true);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000887 }
888 }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000889 }
890 }
Taku Izumidcd79ae2010-04-27 14:39:53 +0000891}
892
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800893static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
894{
895 u32 ctrl_ext;
896
897 /* Let firmware take over control of h/w */
898 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
899 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000900 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800901}
902
903static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
904{
905 u32 ctrl_ext;
906
907 /* Let firmware know the driver has taken over */
908 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
909 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000910 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800911}
Auke Kok9a799d72007-09-15 14:07:45 -0700912
Ben Hutchings49ce9c22012-07-10 10:56:00 +0000913/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000914 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
915 * @adapter: pointer to adapter struct
916 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
917 * @queue: queue to map the corresponding interrupt to
918 * @msix_vector: the vector to map to the corresponding queue
919 *
920 */
921static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
Joe Perchese8e9f692010-09-07 21:34:53 +0000922 u8 queue, u8 msix_vector)
Auke Kok9a799d72007-09-15 14:07:45 -0700923{
924 u32 ivar, index;
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000925 struct ixgbe_hw *hw = &adapter->hw;
926 switch (hw->mac.type) {
927 case ixgbe_mac_82598EB:
928 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
929 if (direction == -1)
930 direction = 0;
931 index = (((direction * 64) + queue) >> 2) & 0x1F;
932 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
933 ivar &= ~(0xFF << (8 * (queue & 0x3)));
934 ivar |= (msix_vector << (8 * (queue & 0x3)));
935 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
936 break;
937 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -0800938 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +0000939 case ixgbe_mac_X550:
940 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -0700941 case ixgbe_mac_x550em_a:
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000942 if (direction == -1) {
943 /* other causes */
944 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
945 index = ((queue & 1) * 8);
946 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
947 ivar &= ~(0xFF << index);
948 ivar |= (msix_vector << index);
949 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
950 break;
951 } else {
952 /* tx or rx causes */
953 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
954 index = ((16 * (queue & 1)) + (8 * direction));
955 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
956 ivar &= ~(0xFF << index);
957 ivar |= (msix_vector << index);
958 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
959 break;
960 }
961 default:
962 break;
963 }
Auke Kok9a799d72007-09-15 14:07:45 -0700964}
965
Alexander Duyckfe49f042009-06-04 16:00:09 +0000966static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000967 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +0000968{
969 u32 mask;
970
Alexander Duyckbd508172010-11-16 19:27:03 -0800971 switch (adapter->hw.mac.type) {
972 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +0000973 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
974 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
Alexander Duyckbd508172010-11-16 19:27:03 -0800975 break;
976 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -0800977 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +0000978 case ixgbe_mac_X550:
979 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -0700980 case ixgbe_mac_x550em_a:
Alexander Duyckfe49f042009-06-04 16:00:09 +0000981 mask = (qmask & 0xFFFFFFFF);
982 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
983 mask = (qmask >> 32);
984 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
Alexander Duyckbd508172010-11-16 19:27:03 -0800985 break;
986 default:
987 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +0000988 }
989}
990
Alexander Duyck943561d2012-05-09 22:14:44 -0700991static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter)
992{
993 struct ixgbe_hw *hw = &adapter->hw;
994 struct ixgbe_hw_stats *hwstats = &adapter->stats;
995 int i;
996 u32 data;
997
998 if ((hw->fc.current_mode != ixgbe_fc_full) &&
999 (hw->fc.current_mode != ixgbe_fc_rx_pause))
1000 return;
1001
1002 switch (hw->mac.type) {
1003 case ixgbe_mac_82598EB:
1004 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
1005 break;
1006 default:
1007 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
1008 }
1009 hwstats->lxoffrxc += data;
1010
1011 /* refill credits (no tx hang) if we received xoff */
1012 if (!data)
1013 return;
1014
1015 for (i = 0; i < adapter->num_tx_queues; i++)
1016 clear_bit(__IXGBE_HANG_CHECK_ARMED,
1017 &adapter->tx_ring[i]->state);
John Fastabend33fdc822017-04-24 03:30:18 -07001018
1019 for (i = 0; i < adapter->num_xdp_queues; i++)
1020 clear_bit(__IXGBE_HANG_CHECK_ARMED,
1021 &adapter->xdp_ring[i]->state);
Alexander Duyck943561d2012-05-09 22:14:44 -07001022}
1023
John Fastabendc84d3242010-11-16 19:27:12 -08001024static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07001025{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001026 struct ixgbe_hw *hw = &adapter->hw;
John Fastabendc84d3242010-11-16 19:27:12 -08001027 struct ixgbe_hw_stats *hwstats = &adapter->stats;
John Fastabendc84d3242010-11-16 19:27:12 -08001028 u32 xoff[8] = {0};
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001029 u8 tc;
John Fastabendc84d3242010-11-16 19:27:12 -08001030 int i;
Alexander Duyck943561d2012-05-09 22:14:44 -07001031 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001032
Alexander Duyck943561d2012-05-09 22:14:44 -07001033 if (adapter->ixgbe_ieee_pfc)
1034 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
John Fastabendc84d3242010-11-16 19:27:12 -08001035
Alexander Duyck943561d2012-05-09 22:14:44 -07001036 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) {
1037 ixgbe_update_xoff_rx_lfc(adapter);
John Fastabendc84d3242010-11-16 19:27:12 -08001038 return;
Alexander Duyck943561d2012-05-09 22:14:44 -07001039 }
John Fastabendc84d3242010-11-16 19:27:12 -08001040
1041 /* update stats for each tc, only valid with PFC enabled */
1042 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001043 u32 pxoffrxc;
1044
John Fastabendc84d3242010-11-16 19:27:12 -08001045 switch (hw->mac.type) {
1046 case ixgbe_mac_82598EB:
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001047 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
John Fastabendc84d3242010-11-16 19:27:12 -08001048 break;
1049 default:
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001050 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
John Fastabendc84d3242010-11-16 19:27:12 -08001051 }
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001052 hwstats->pxoffrxc[i] += pxoffrxc;
1053 /* Get the TC for given UP */
1054 tc = netdev_get_prio_tc_map(adapter->netdev, i);
1055 xoff[tc] += pxoffrxc;
Auke Kok9a799d72007-09-15 14:07:45 -07001056 }
1057
John Fastabendc84d3242010-11-16 19:27:12 -08001058 /* disarm tx queues that have received xoff frames */
1059 for (i = 0; i < adapter->num_tx_queues; i++) {
1060 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
John Fastabendc84d3242010-11-16 19:27:12 -08001061
Parikh, Neerav2afaa002012-09-27 12:02:22 +00001062 tc = tx_ring->dcb_tc;
John Fastabendc84d3242010-11-16 19:27:12 -08001063 if (xoff[tc])
1064 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
1065 }
John Fastabend33fdc822017-04-24 03:30:18 -07001066
1067 for (i = 0; i < adapter->num_xdp_queues; i++) {
1068 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i];
1069
1070 tc = xdp_ring->dcb_tc;
1071 if (xoff[tc])
1072 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state);
1073 }
John Fastabendc84d3242010-11-16 19:27:12 -08001074}
1075
1076static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
1077{
Alexander Duyck7d7ce682012-02-08 07:50:51 +00001078 return ring->stats.packets;
John Fastabendc84d3242010-11-16 19:27:12 -08001079}
1080
1081static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
1082{
Alexander Duyck14895422017-11-22 10:56:46 -08001083 unsigned int head, tail;
John Fastabendc84d3242010-11-16 19:27:12 -08001084
Alexander Duyck14895422017-11-22 10:56:46 -08001085 head = ring->next_to_clean;
1086 tail = ring->next_to_use;
John Fastabend2a47fa42013-11-06 09:54:52 -08001087
Alexander Duyck14895422017-11-22 10:56:46 -08001088 return ((head <= tail) ? tail : tail + ring->count) - head;
John Fastabendc84d3242010-11-16 19:27:12 -08001089}
1090
1091static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
1092{
1093 u32 tx_done = ixgbe_get_tx_completed(tx_ring);
1094 u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
1095 u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
John Fastabendc84d3242010-11-16 19:27:12 -08001096
1097 clear_check_for_tx_hang(tx_ring);
1098
1099 /*
1100 * Check for a hung queue, but be thorough. This verifies
1101 * that a transmit has been completed since the previous
1102 * check AND there is at least one packet pending. The
1103 * ARMED bit is set to indicate a potential hang. The
1104 * bit is cleared if a pause frame is received to remove
1105 * false hang detection due to PFC or 802.3x frames. By
1106 * requiring this to fail twice we avoid races with
1107 * pfc clearing the ARMED bit and conditions where we
1108 * run the check_tx_hang logic with a transmit completion
1109 * pending but without time to complete it yet.
1110 */
Mark Rustade90dd262014-07-22 06:51:08 +00001111 if (tx_done_old == tx_done && tx_pending)
John Fastabendc84d3242010-11-16 19:27:12 -08001112 /* make sure it is true for two checks in a row */
Mark Rustade90dd262014-07-22 06:51:08 +00001113 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
1114 &tx_ring->state);
1115 /* update completed stats and continue */
1116 tx_ring->tx_stats.tx_done_old = tx_done;
1117 /* reset the countdown */
1118 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
John Fastabendc84d3242010-11-16 19:27:12 -08001119
Mark Rustade90dd262014-07-22 06:51:08 +00001120 return false;
Auke Kok9a799d72007-09-15 14:07:45 -07001121}
1122
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001123/**
1124 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
1125 * @adapter: driver private struct
1126 **/
1127static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
1128{
1129
1130 /* Do the reset outside of interrupt context */
1131 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
Emil Tantilov57ca2a42016-07-29 14:46:31 -07001132 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
Jacob Keller12ff3f32012-12-01 07:57:17 +00001133 e_warn(drv, "initiating reset due to tx timeout\n");
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001134 ixgbe_service_event_schedule(adapter);
1135 }
1136}
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001137
Auke Kok9a799d72007-09-15 14:07:45 -07001138/**
Rostislav Pehlivanovc04f90e2016-01-27 18:33:30 +00001139 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate
Tony Nguyen5ba643c2017-12-04 11:28:30 -08001140 * @netdev: network interface device structure
1141 * @queue_index: Tx queue to set
1142 * @maxrate: desired maximum transmit bitrate
Rostislav Pehlivanovc04f90e2016-01-27 18:33:30 +00001143 **/
1144static int ixgbe_tx_maxrate(struct net_device *netdev,
1145 int queue_index, u32 maxrate)
1146{
1147 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1148 struct ixgbe_hw *hw = &adapter->hw;
1149 u32 bcnrc_val = ixgbe_link_mbps(adapter);
1150
1151 if (!maxrate)
1152 return 0;
1153
1154 /* Calculate the rate factor values to set */
1155 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1156 bcnrc_val /= maxrate;
1157
1158 /* clear everything but the rate factor */
1159 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1160 IXGBE_RTTBCNRC_RF_DEC_MASK;
1161
1162 /* enable the rate scheduler */
1163 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1164
1165 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index);
1166 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1167
1168 return 0;
1169}
1170
1171/**
Auke Kok9a799d72007-09-15 14:07:45 -07001172 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
Alexander Duyckfe49f042009-06-04 16:00:09 +00001173 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07001174 * @tx_ring: tx ring to clean
Alexander Duyck8220bbc2016-03-07 09:30:09 -08001175 * @napi_budget: Used to determine if we are in netpoll
Auke Kok9a799d72007-09-15 14:07:45 -07001176 **/
Alexander Duyckfe49f042009-06-04 16:00:09 +00001177static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
Jesper Dangaard Brouera3a87492016-02-08 13:15:09 +01001178 struct ixgbe_ring *tx_ring, int napi_budget)
Auke Kok9a799d72007-09-15 14:07:45 -07001179{
Alexander Duyckfe49f042009-06-04 16:00:09 +00001180 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001181 struct ixgbe_tx_buffer *tx_buffer;
1182 union ixgbe_adv_tx_desc *tx_desc;
Shannon Nelsona8a43fd2017-12-19 16:00:01 -08001183 unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0;
Alexander Duyck59224552011-08-31 00:01:06 +00001184 unsigned int budget = q_vector->tx.work_limit;
Alexander Duyck729739b2012-02-08 07:51:06 +00001185 unsigned int i = tx_ring->next_to_clean;
1186
1187 if (test_bit(__IXGBE_DOWN, &adapter->state))
1188 return true;
Auke Kok9a799d72007-09-15 14:07:45 -07001189
Alexander Duyckd3d00232011-07-15 02:31:25 +00001190 tx_buffer = &tx_ring->tx_buffer_info[i];
Alexander Duycke4f74022012-01-31 02:59:44 +00001191 tx_desc = IXGBE_TX_DESC(tx_ring, i);
Alexander Duyck729739b2012-02-08 07:51:06 +00001192 i -= tx_ring->count;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08001193
Alexander Duyck729739b2012-02-08 07:51:06 +00001194 do {
Alexander Duyckd3d00232011-07-15 02:31:25 +00001195 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
Auke Kok9a799d72007-09-15 14:07:45 -07001196
Alexander Duyckd3d00232011-07-15 02:31:25 +00001197 /* if next_to_watch is not set then there is no work pending */
1198 if (!eop_desc)
1199 break;
1200
Alexander Duyck7f83a9e2012-02-08 07:49:23 +00001201 /* prevent any other reads prior to eop_desc */
Brian King0a9a17e2017-11-17 11:05:43 -06001202 smp_rmb();
Alexander Duyck7f83a9e2012-02-08 07:49:23 +00001203
Alexander Duyckd3d00232011-07-15 02:31:25 +00001204 /* if DD is not set pending work has not been completed */
1205 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
1206 break;
1207
Alexander Duyckd3d00232011-07-15 02:31:25 +00001208 /* clear next_to_watch to prevent false hangs */
1209 tx_buffer->next_to_watch = NULL;
1210
Alexander Duyck091a6242012-02-08 07:51:01 +00001211 /* update the statistics for this packet */
1212 total_bytes += tx_buffer->bytecount;
1213 total_packets += tx_buffer->gso_segs;
Shannon Nelsona8a43fd2017-12-19 16:00:01 -08001214 if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC)
1215 total_ipsec++;
Alexander Duyck091a6242012-02-08 07:51:01 +00001216
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001217 /* free the skb */
John Fastabend33fdc822017-04-24 03:30:18 -07001218 if (ring_is_xdp(tx_ring))
1219 page_frag_free(tx_buffer->data);
1220 else
1221 napi_consume_skb(tx_buffer->skb, napi_budget);
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001222
Alexander Duyck729739b2012-02-08 07:51:06 +00001223 /* unmap skb header data */
1224 dma_unmap_single(tx_ring->dev,
1225 dma_unmap_addr(tx_buffer, dma),
1226 dma_unmap_len(tx_buffer, len),
1227 DMA_TO_DEVICE);
1228
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001229 /* clear tx_buffer data */
Alexander Duyck729739b2012-02-08 07:51:06 +00001230 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00001231
Alexander Duyck729739b2012-02-08 07:51:06 +00001232 /* unmap remaining buffers */
1233 while (tx_desc != eop_desc) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00001234 tx_buffer++;
1235 tx_desc++;
1236 i++;
Alexander Duyck729739b2012-02-08 07:51:06 +00001237 if (unlikely(!i)) {
1238 i -= tx_ring->count;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001239 tx_buffer = tx_ring->tx_buffer_info;
Alexander Duycke4f74022012-01-31 02:59:44 +00001240 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
Alexander Duyckd3d00232011-07-15 02:31:25 +00001241 }
1242
Alexander Duyck729739b2012-02-08 07:51:06 +00001243 /* unmap any remaining paged data */
1244 if (dma_unmap_len(tx_buffer, len)) {
1245 dma_unmap_page(tx_ring->dev,
1246 dma_unmap_addr(tx_buffer, dma),
1247 dma_unmap_len(tx_buffer, len),
1248 DMA_TO_DEVICE);
1249 dma_unmap_len_set(tx_buffer, len, 0);
1250 }
1251 }
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08001252
Alexander Duyck729739b2012-02-08 07:51:06 +00001253 /* move us one more past the eop_desc for start of next pkt */
1254 tx_buffer++;
1255 tx_desc++;
1256 i++;
1257 if (unlikely(!i)) {
1258 i -= tx_ring->count;
1259 tx_buffer = tx_ring->tx_buffer_info;
1260 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
1261 }
1262
1263 /* issue prefetch for next Tx descriptor */
1264 prefetch(tx_desc);
1265
1266 /* update budget accounting */
1267 budget--;
1268 } while (likely(budget));
1269
1270 i += tx_ring->count;
Auke Kok9a799d72007-09-15 14:07:45 -07001271 tx_ring->next_to_clean = i;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001272 u64_stats_update_begin(&tx_ring->syncp);
Alexander Duyckb9537992010-11-16 19:26:58 -08001273 tx_ring->stats.bytes += total_bytes;
Alexander Duyckbd198052011-06-11 01:45:08 +00001274 tx_ring->stats.packets += total_packets;
Alexander Duyckd3d00232011-07-15 02:31:25 +00001275 u64_stats_update_end(&tx_ring->syncp);
Alexander Duyckbd198052011-06-11 01:45:08 +00001276 q_vector->tx.total_bytes += total_bytes;
1277 q_vector->tx.total_packets += total_packets;
Shannon Nelsona8a43fd2017-12-19 16:00:01 -08001278 adapter->tx_ipsec += total_ipsec;
Alexander Duyckb9537992010-11-16 19:26:58 -08001279
John Fastabendc84d3242010-11-16 19:27:12 -08001280 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
Alexander Duyckb9537992010-11-16 19:26:58 -08001281 /* schedule immediate reset if we believe we hung */
John Fastabendc84d3242010-11-16 19:27:12 -08001282 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend33fdc822017-04-24 03:30:18 -07001283 e_err(drv, "Detected Tx Unit Hang %s\n"
John Fastabendc84d3242010-11-16 19:27:12 -08001284 " Tx Queue <%d>\n"
1285 " TDH, TDT <%x>, <%x>\n"
1286 " next_to_use <%x>\n"
1287 " next_to_clean <%x>\n"
1288 "tx_buffer_info[next_to_clean]\n"
1289 " time_stamp <%lx>\n"
1290 " jiffies <%lx>\n",
John Fastabend33fdc822017-04-24 03:30:18 -07001291 ring_is_xdp(tx_ring) ? "(XDP)" : "",
John Fastabendc84d3242010-11-16 19:27:12 -08001292 tx_ring->queue_index,
1293 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
1294 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
Alexander Duyckd3d00232011-07-15 02:31:25 +00001295 tx_ring->next_to_use, i,
1296 tx_ring->tx_buffer_info[i].time_stamp, jiffies);
John Fastabendc84d3242010-11-16 19:27:12 -08001297
John Fastabend33fdc822017-04-24 03:30:18 -07001298 if (!ring_is_xdp(tx_ring))
1299 netif_stop_subqueue(tx_ring->netdev,
1300 tx_ring->queue_index);
John Fastabendc84d3242010-11-16 19:27:12 -08001301
1302 e_info(probe,
1303 "tx hang %d detected on queue %d, resetting adapter\n",
1304 adapter->tx_timeout_count + 1, tx_ring->queue_index);
1305
1306 /* schedule immediate reset if we believe we hung */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00001307 ixgbe_tx_timeout_reset(adapter);
Alexander Duyckb9537992010-11-16 19:26:58 -08001308
1309 /* the adapter is about to reset, no point in enabling stuff */
Alexander Duyck59224552011-08-31 00:01:06 +00001310 return true;
Alexander Duyckb9537992010-11-16 19:26:58 -08001311 }
Auke Kok9a799d72007-09-15 14:07:45 -07001312
John Fastabend33fdc822017-04-24 03:30:18 -07001313 if (ring_is_xdp(tx_ring))
1314 return !!budget;
1315
Alexander Duyckb2d96e02012-02-07 08:14:33 +00001316 netdev_tx_completed_queue(txring_txq(tx_ring),
1317 total_packets, total_bytes);
1318
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001319#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Alexander Duyck30065e62011-07-15 03:05:14 +00001320 if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&
Alexander Duyck7d4987d2011-05-27 05:31:37 +00001321 (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001322 /* Make sure that anybody stopping the queue after this
1323 * sees the new next_to_clean.
1324 */
1325 smp_mb();
Alexander Duyck729739b2012-02-08 07:51:06 +00001326 if (__netif_subqueue_stopped(tx_ring->netdev,
1327 tx_ring->queue_index)
1328 && !test_bit(__IXGBE_DOWN, &adapter->state)) {
1329 netif_wake_subqueue(tx_ring->netdev,
1330 tx_ring->queue_index);
Alexander Duyck5b7da512010-11-16 19:26:50 -08001331 ++tx_ring->tx_stats.restart_queue;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08001332 }
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08001333 }
Auke Kok9a799d72007-09-15 14:07:45 -07001334
Alexander Duyck59224552011-08-31 00:01:06 +00001335 return !!budget;
Auke Kok9a799d72007-09-15 14:07:45 -07001336}
1337
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001338#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001339static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001340 struct ixgbe_ring *tx_ring,
1341 int cpu)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001342{
Don Skidmoreee5f7842009-11-06 12:56:20 +00001343 struct ixgbe_hw *hw = &adapter->hw;
Mark Rustad9de76052015-08-08 16:27:41 -07001344 u32 txctrl = 0;
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001345 u16 reg_offset;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001346
Mark Rustad9de76052015-08-08 16:27:41 -07001347 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1348 txctrl = dca3_get_tag(tx_ring->dev, cpu);
1349
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001350 switch (hw->mac.type) {
1351 case ixgbe_mac_82598EB:
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001352 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001353 break;
1354 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08001355 case ixgbe_mac_X540:
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001356 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx);
1357 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599;
1358 break;
1359 default:
1360 /* for unknown hardware do not write register */
1361 return;
1362 }
1363
1364 /*
1365 * We can enable relaxed ordering for reads, but not writes when
1366 * DCA is enabled. This is due to a known issue in some chipsets
1367 * which will cause the DCA tag to be cleared.
1368 */
1369 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN |
1370 IXGBE_DCA_TXCTRL_DATA_RRO_EN |
1371 IXGBE_DCA_TXCTRL_DESC_DCA_EN;
1372
1373 IXGBE_WRITE_REG(hw, reg_offset, txctrl);
1374}
1375
1376static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
1377 struct ixgbe_ring *rx_ring,
1378 int cpu)
1379{
1380 struct ixgbe_hw *hw = &adapter->hw;
Mark Rustad9de76052015-08-08 16:27:41 -07001381 u32 rxctrl = 0;
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001382 u8 reg_idx = rx_ring->reg_idx;
1383
Mark Rustad9de76052015-08-08 16:27:41 -07001384 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1385 rxctrl = dca3_get_tag(rx_ring->dev, cpu);
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001386
1387 switch (hw->mac.type) {
1388 case ixgbe_mac_82599EB:
1389 case ixgbe_mac_X540:
1390 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599;
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001391 break;
1392 default:
1393 break;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001394 }
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001395
1396 /*
1397 * We can enable relaxed ordering for reads, but not writes when
1398 * DCA is enabled. This is due to a known issue in some chipsets
1399 * which will cause the DCA tag to be cleared.
1400 */
1401 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN |
Mark Rustad9de76052015-08-08 16:27:41 -07001402 IXGBE_DCA_RXCTRL_DATA_DCA_EN |
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001403 IXGBE_DCA_RXCTRL_DESC_DCA_EN;
1404
1405 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001406}
1407
1408static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
1409{
1410 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001411 struct ixgbe_ring *ring;
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001412 int cpu = get_cpu();
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001413
1414 if (q_vector->cpu == cpu)
1415 goto out_no_update;
1416
Alexander Duycka5579282012-02-08 07:50:04 +00001417 ixgbe_for_each_ring(ring, q_vector->tx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001418 ixgbe_update_tx_dca(adapter, ring, cpu);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001419
Alexander Duycka5579282012-02-08 07:50:04 +00001420 ixgbe_for_each_ring(ring, q_vector->rx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00001421 ixgbe_update_rx_dca(adapter, ring, cpu);
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001422
1423 q_vector->cpu = cpu;
1424out_no_update:
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001425 put_cpu();
1426}
1427
1428static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
1429{
1430 int i;
1431
Alexander Duycke35ec122009-05-21 13:07:12 +00001432 /* always use CB2 mode, difference is masked in the CB driver */
Mark Rustad9de76052015-08-08 16:27:41 -07001433 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1434 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1435 IXGBE_DCA_CTRL_DCA_MODE_CB2);
1436 else
1437 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1438 IXGBE_DCA_CTRL_DCA_DISABLE);
Alexander Duycke35ec122009-05-21 13:07:12 +00001439
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00001440 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001441 adapter->q_vector[i]->cpu = -1;
1442 ixgbe_update_dca(adapter->q_vector[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001443 }
1444}
1445
1446static int __ixgbe_notify_dca(struct device *dev, void *data)
1447{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08001448 struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001449 unsigned long event = *(unsigned long *)data;
1450
Don Skidmore2a72c312011-07-20 02:27:05 +00001451 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
Alexander Duyck33cf09c2010-11-16 19:26:55 -08001452 return 0;
1453
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001454 switch (event) {
1455 case DCA_PROVIDER_ADD:
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07001456 /* if we're already enabled, don't do it again */
1457 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1458 break;
Denis V. Lunev652f0932008-03-27 14:39:17 +03001459 if (dca_add_requester(dev) == 0) {
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07001460 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Mark Rustad9de76052015-08-08 16:27:41 -07001461 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1462 IXGBE_DCA_CTRL_DCA_MODE_CB2);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001463 break;
1464 }
Tony Nguyen93df9462017-05-31 04:43:47 -07001465 /* fall through - DCA is disabled. */
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001466 case DCA_PROVIDER_REMOVE:
1467 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
1468 dca_remove_requester(dev);
1469 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
Mark Rustad9de76052015-08-08 16:27:41 -07001470 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1471 IXGBE_DCA_CTRL_DCA_DISABLE);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001472 }
1473 break;
1474 }
1475
Denis V. Lunev652f0932008-03-27 14:39:17 +03001476 return 0;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001477}
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001478
Alexander Duyckbdda1a62012-02-08 07:50:14 +00001479#endif /* CONFIG_IXGBE_DCA */
Fan Du7edda4b82015-04-29 10:57:39 +08001480
1481#define IXGBE_RSS_L4_TYPES_MASK \
1482 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \
1483 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \
1484 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \
1485 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP))
1486
Alexander Duyck8a0da212012-01-31 02:59:49 +00001487static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
1488 union ixgbe_adv_rx_desc *rx_desc,
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001489 struct sk_buff *skb)
1490{
Fan Du7edda4b82015-04-29 10:57:39 +08001491 u16 rss_type;
1492
1493 if (!(ring->netdev->features & NETIF_F_RXHASH))
1494 return;
1495
1496 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
1497 IXGBE_RXDADV_RSSTYPE_MASK;
1498
1499 if (!rss_type)
1500 return;
1501
1502 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
1503 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ?
1504 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3);
Emil Tantilov67a74ee2011-04-23 04:50:40 +00001505}
1506
Alexander Duyckf8003262012-03-03 02:35:52 +00001507#ifdef IXGBE_FCOE
Auke Kok9a799d72007-09-15 14:07:45 -07001508/**
Alexander Duyckff886df2011-06-11 01:45:13 +00001509 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
Alexander Duyck57efd442012-06-25 21:54:46 +00001510 * @ring: structure containing ring specific data
Alexander Duyckff886df2011-06-11 01:45:13 +00001511 * @rx_desc: advanced rx descriptor
1512 *
1513 * Returns : true if it is FCoE pkt
1514 */
Alexander Duyck57efd442012-06-25 21:54:46 +00001515static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring,
Alexander Duyckff886df2011-06-11 01:45:13 +00001516 union ixgbe_adv_rx_desc *rx_desc)
1517{
1518 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1519
Alexander Duyck57efd442012-06-25 21:54:46 +00001520 return test_bit(__IXGBE_RX_FCOE, &ring->state) &&
Alexander Duyckff886df2011-06-11 01:45:13 +00001521 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) ==
1522 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE <<
1523 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT)));
1524}
1525
Alexander Duyckf8003262012-03-03 02:35:52 +00001526#endif /* IXGBE_FCOE */
Alexander Duyckff886df2011-06-11 01:45:13 +00001527/**
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001528 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
Alexander Duyck8a0da212012-01-31 02:59:49 +00001529 * @ring: structure containing ring specific data
1530 * @rx_desc: current Rx descriptor being processed
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001531 * @skb: skb currently being received and modified
1532 **/
Alexander Duyck8a0da212012-01-31 02:59:49 +00001533static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
Don Skidmore8bae1b22009-07-23 18:00:39 +00001534 union ixgbe_adv_rx_desc *rx_desc,
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001535 struct sk_buff *skb)
Auke Kok9a799d72007-09-15 14:07:45 -07001536{
Don Skidmore3f207802014-12-23 07:40:34 +00001537 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
Don Skidmore3f207802014-12-23 07:40:34 +00001538 bool encap_pkt = false;
1539
Alexander Duyck8a0da212012-01-31 02:59:49 +00001540 skb_checksum_none_assert(skb);
Auke Kok9a799d72007-09-15 14:07:45 -07001541
Jesse Brandeburg712744b2008-08-26 04:26:56 -07001542 /* Rx csum disabled */
Alexander Duyck8a0da212012-01-31 02:59:49 +00001543 if (!(ring->netdev->features & NETIF_F_RXCSUM))
Auke Kok9a799d72007-09-15 14:07:45 -07001544 return;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001545
Emil Tantilova21d0822016-08-10 11:19:23 -07001546 /* check for VXLAN and Geneve packets */
1547 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) {
Don Skidmore3f207802014-12-23 07:40:34 +00001548 encap_pkt = true;
1549 skb->encapsulation = 1;
Don Skidmore3f207802014-12-23 07:40:34 +00001550 }
1551
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001552 /* if IP and error */
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001553 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
1554 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
Alexander Duyck8a0da212012-01-31 02:59:49 +00001555 ring->rx_stats.csum_err++;
Auke Kok9a799d72007-09-15 14:07:45 -07001556 return;
1557 }
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001558
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001559 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS))
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001560 return;
1561
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00001562 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
Don Skidmore8bae1b22009-07-23 18:00:39 +00001563 /*
1564 * 82599 errata, UDP frames with a 0 checksum can be marked as
1565 * checksum errors.
1566 */
Alexander Duyck8a0da212012-01-31 02:59:49 +00001567 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) &&
1568 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state))
Don Skidmore8bae1b22009-07-23 18:00:39 +00001569 return;
1570
Alexander Duyck8a0da212012-01-31 02:59:49 +00001571 ring->rx_stats.csum_err++;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001572 return;
1573 }
1574
Auke Kok9a799d72007-09-15 14:07:45 -07001575 /* It must be a TCP or UDP packet with a valid checksum */
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001576 skb->ip_summed = CHECKSUM_UNNECESSARY;
Don Skidmore3f207802014-12-23 07:40:34 +00001577 if (encap_pkt) {
1578 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS))
1579 return;
1580
1581 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) {
Mark Rustadd4692512015-12-04 11:26:43 -08001582 skb->ip_summed = CHECKSUM_NONE;
Don Skidmore3f207802014-12-23 07:40:34 +00001583 return;
1584 }
1585 /* If we checked the outer header let the stack know */
1586 skb->csum_level = 1;
1587 }
Auke Kok9a799d72007-09-15 14:07:45 -07001588}
1589
Alexander Duyck2de6aa32017-01-17 08:36:54 -08001590static inline unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring)
1591{
1592 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0;
1593}
1594
Alexander Duyckf990b792012-01-31 02:59:34 +00001595static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
1596 struct ixgbe_rx_buffer *bi)
1597{
1598 struct page *page = bi->page;
Alexander Duyck18cb6522014-11-14 00:56:29 +00001599 dma_addr_t dma;
Alexander Duyckf990b792012-01-31 02:59:34 +00001600
Alexander Duyckf8003262012-03-03 02:35:52 +00001601 /* since we are recycling buffers we should seldom need to alloc */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001602 if (likely(page))
Alexander Duyckf990b792012-01-31 02:59:34 +00001603 return true;
1604
Alexander Duyckf8003262012-03-03 02:35:52 +00001605 /* alloc new page for storage */
Alexander Duyck18cb6522014-11-14 00:56:29 +00001606 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring));
1607 if (unlikely(!page)) {
1608 rx_ring->rx_stats.alloc_rx_page_failed++;
1609 return false;
Alexander Duyckf990b792012-01-31 02:59:34 +00001610 }
1611
Alexander Duyckf8003262012-03-03 02:35:52 +00001612 /* map page for use */
Alexander Duyckf3213d92017-01-17 08:35:54 -08001613 dma = dma_map_page_attrs(rx_ring->dev, page, 0,
1614 ixgbe_rx_pg_size(rx_ring),
1615 DMA_FROM_DEVICE,
1616 IXGBE_RX_DMA_ATTR);
Alexander Duyckf990b792012-01-31 02:59:34 +00001617
Alexander Duyckf8003262012-03-03 02:35:52 +00001618 /*
1619 * if mapping failed free memory back to system since
1620 * there isn't much point in holding memory we can't use
1621 */
1622 if (dma_mapping_error(rx_ring->dev, dma)) {
Alexander Duyckdd411ec2012-04-06 04:24:50 +00001623 __free_pages(page, ixgbe_rx_pg_order(rx_ring));
Alexander Duyckf8003262012-03-03 02:35:52 +00001624
Alexander Duyckf990b792012-01-31 02:59:34 +00001625 rx_ring->rx_stats.alloc_rx_page_failed++;
1626 return false;
1627 }
1628
Alexander Duyckf8003262012-03-03 02:35:52 +00001629 bi->dma = dma;
Alexander Duyck18cb6522014-11-14 00:56:29 +00001630 bi->page = page;
Alexander Duyck2de6aa32017-01-17 08:36:54 -08001631 bi->page_offset = ixgbe_rx_offset(rx_ring);
Björn Töpeled93a392018-03-22 10:02:36 +01001632 page_ref_add(page, USHRT_MAX - 1);
1633 bi->pagecnt_bias = USHRT_MAX;
Jesper Dangaard Brouer86e23492017-09-04 20:40:22 +02001634 rx_ring->rx_stats.alloc_rx_page++;
Alexander Duyckf8003262012-03-03 02:35:52 +00001635
Alexander Duyckf990b792012-01-31 02:59:34 +00001636 return true;
1637}
1638
Auke Kok9a799d72007-09-15 14:07:45 -07001639/**
Alexander Duyckf990b792012-01-31 02:59:34 +00001640 * ixgbe_alloc_rx_buffers - Replace used receive buffers
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001641 * @rx_ring: ring to place buffers on
1642 * @cleaned_count: number of buffers to replace
Auke Kok9a799d72007-09-15 14:07:45 -07001643 **/
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001644void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
Auke Kok9a799d72007-09-15 14:07:45 -07001645{
Auke Kok9a799d72007-09-15 14:07:45 -07001646 union ixgbe_adv_rx_desc *rx_desc;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001647 struct ixgbe_rx_buffer *bi;
Alexander Duyckd5f398e2010-11-16 19:26:48 -08001648 u16 i = rx_ring->next_to_use;
Alexander Duyck4f4542b2017-01-17 08:36:14 -08001649 u16 bufsz;
Auke Kok9a799d72007-09-15 14:07:45 -07001650
Alexander Duyckf8003262012-03-03 02:35:52 +00001651 /* nothing to do */
1652 if (!cleaned_count)
Alexander Duyckfc77dc32010-11-16 19:26:51 -08001653 return;
1654
Alexander Duycke4f74022012-01-31 02:59:44 +00001655 rx_desc = IXGBE_RX_DESC(rx_ring, i);
Alexander Duyckf990b792012-01-31 02:59:34 +00001656 bi = &rx_ring->rx_buffer_info[i];
1657 i -= rx_ring->count;
1658
Alexander Duyck4f4542b2017-01-17 08:36:14 -08001659 bufsz = ixgbe_rx_bufsz(rx_ring);
1660
Alexander Duyckf8003262012-03-03 02:35:52 +00001661 do {
1662 if (!ixgbe_alloc_mapped_page(rx_ring, bi))
Alexander Duyckf990b792012-01-31 02:59:34 +00001663 break;
Auke Kok9a799d72007-09-15 14:07:45 -07001664
Alexander Duyckf3213d92017-01-17 08:35:54 -08001665 /* sync the buffer for use by the device */
1666 dma_sync_single_range_for_device(rx_ring->dev, bi->dma,
Alexander Duyck4f4542b2017-01-17 08:36:14 -08001667 bi->page_offset, bufsz,
Alexander Duyckf3213d92017-01-17 08:35:54 -08001668 DMA_FROM_DEVICE);
1669
Alexander Duyckf8003262012-03-03 02:35:52 +00001670 /*
1671 * Refresh the desc even if buffer_addrs didn't change
1672 * because each write-back erases this info.
1673 */
1674 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
Auke Kok9a799d72007-09-15 14:07:45 -07001675
Alexander Duyckf990b792012-01-31 02:59:34 +00001676 rx_desc++;
1677 bi++;
Auke Kok9a799d72007-09-15 14:07:45 -07001678 i++;
Alexander Duyckf990b792012-01-31 02:59:34 +00001679 if (unlikely(!i)) {
Alexander Duycke4f74022012-01-31 02:59:44 +00001680 rx_desc = IXGBE_RX_DESC(rx_ring, 0);
Alexander Duyckf990b792012-01-31 02:59:34 +00001681 bi = rx_ring->rx_buffer_info;
1682 i -= rx_ring->count;
1683 }
1684
Alexander Duyckc3630cc2017-01-17 08:36:28 -08001685 /* clear the length for the next_to_use descriptor */
1686 rx_desc->wb.upper.length = 0;
Alexander Duyckf8003262012-03-03 02:35:52 +00001687
1688 cleaned_count--;
1689 } while (cleaned_count);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001690
Alexander Duyckf990b792012-01-31 02:59:34 +00001691 i += rx_ring->count;
1692
Alexander Duyckad435ec2014-11-14 00:56:35 +00001693 if (rx_ring->next_to_use != i) {
1694 rx_ring->next_to_use = i;
1695
1696 /* update next to alloc since we have filled the ring */
1697 rx_ring->next_to_alloc = i;
1698
1699 /* Force memory writes to complete before letting h/w
1700 * know there are new descriptors to fetch. (Only
1701 * applicable for weak-ordered memory model archs,
1702 * such as IA-64).
1703 */
1704 wmb();
1705 writel(i, rx_ring->tail);
1706 }
Auke Kok9a799d72007-09-15 14:07:45 -07001707}
1708
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001709static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
1710 struct sk_buff *skb)
1711{
Alexander Duyckf8003262012-03-03 02:35:52 +00001712 u16 hdr_len = skb_headlen(skb);
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001713
1714 /* set gso_size to avoid messing up TCP MSS */
1715 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
1716 IXGBE_CB(skb)->append_cnt);
Alexander Duyck96be80a2013-02-12 09:45:44 +00001717 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
Alexander Duyck1d2024f2012-01-31 02:59:29 +00001718}
1719
1720static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
1721 struct sk_buff *skb)
1722{
1723 /* if append_cnt is 0 then frame is not RSC */
1724 if (!IXGBE_CB(skb)->append_cnt)
1725 return;
1726
1727 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt;
1728 rx_ring->rx_stats.rsc_flush++;
1729
1730 ixgbe_set_rsc_gso_size(rx_ring, skb);
1731
1732 /* gso_size is computed using append_cnt so always clear it last */
1733 IXGBE_CB(skb)->append_cnt = 0;
1734}
1735
Alexander Duyck8a0da212012-01-31 02:59:49 +00001736/**
1737 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
1738 * @rx_ring: rx descriptor ring packet is being transacted on
1739 * @rx_desc: pointer to the EOP Rx descriptor
1740 * @skb: pointer to current skb being populated
1741 *
1742 * This function checks the ring, descriptor, and packet information in
1743 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
1744 * other fields within the skb.
1745 **/
1746static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
1747 union ixgbe_adv_rx_desc *rx_desc,
1748 struct sk_buff *skb)
1749{
John Fastabend43e95f12012-05-15 06:12:17 +00001750 struct net_device *dev = rx_ring->netdev;
Mark Rustada9763f32015-10-27 09:58:07 -07001751 u32 flags = rx_ring->q_vector->adapter->flags;
John Fastabend43e95f12012-05-15 06:12:17 +00001752
Alexander Duyck8a0da212012-01-31 02:59:49 +00001753 ixgbe_update_rsc_stats(rx_ring, skb);
1754
1755 ixgbe_rx_hash(rx_ring, rx_desc, skb);
1756
1757 ixgbe_rx_checksum(rx_ring, rx_desc, skb);
1758
Mark Rustada9763f32015-10-27 09:58:07 -07001759 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED))
1760 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00001761
Patrick McHardyf6469682013-04-19 02:04:27 +00001762 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
John Fastabend43e95f12012-05-15 06:12:17 +00001763 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
Alexander Duyck8a0da212012-01-31 02:59:49 +00001764 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
Patrick McHardy86a9bad2013-04-19 02:04:30 +00001765 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
Alexander Duyck8a0da212012-01-31 02:59:49 +00001766 }
1767
Shannon Nelson92103192017-12-19 15:59:59 -08001768 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP))
1769 ixgbe_ipsec_rx(rx_ring, rx_desc, skb);
1770
John Fastabend43e95f12012-05-15 06:12:17 +00001771 skb->protocol = eth_type_trans(skb, dev);
Alexander Duyck58918df2017-11-22 10:57:17 -08001772
1773 /* record Rx queue, or update MACVLAN statistics */
1774 if (netif_is_ixgbe(dev))
1775 skb_record_rx_queue(skb, rx_ring->queue_index);
1776 else
1777 macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true,
1778 (skb->pkt_type == PACKET_BROADCAST) ||
1779 (skb->pkt_type == PACKET_MULTICAST));
Alexander Duyck8a0da212012-01-31 02:59:49 +00001780}
1781
1782static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
1783 struct sk_buff *skb)
1784{
Eric Dumazet3ffc1af2017-02-02 16:26:39 -08001785 napi_gro_receive(&q_vector->napi, skb);
Alexander Duyckaa801752010-11-16 19:27:02 -08001786}
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001787
Alexander Duyckf8003262012-03-03 02:35:52 +00001788/**
1789 * ixgbe_is_non_eop - process handling of non-EOP buffers
1790 * @rx_ring: Rx ring being processed
1791 * @rx_desc: Rx descriptor for current buffer
1792 * @skb: Current socket buffer containing buffer in progress
1793 *
1794 * This function updates next to clean. If the buffer is an EOP buffer
1795 * this function exits returning false, otherwise it will place the
1796 * sk_buff in the next buffer to be chained and return true indicating
1797 * that this is in fact a non-EOP buffer.
1798 **/
1799static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring,
1800 union ixgbe_adv_rx_desc *rx_desc,
1801 struct sk_buff *skb)
1802{
1803 u32 ntc = rx_ring->next_to_clean + 1;
1804
1805 /* fetch, update, and store next to clean */
1806 ntc = (ntc < rx_ring->count) ? ntc : 0;
1807 rx_ring->next_to_clean = ntc;
1808
1809 prefetch(IXGBE_RX_DESC(rx_ring, ntc));
1810
Alexander Duyck5a02cbd2012-07-20 08:08:51 +00001811 /* update RSC append count if present */
1812 if (ring_is_rsc_enabled(rx_ring)) {
1813 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data &
1814 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK);
1815
1816 if (unlikely(rsc_enabled)) {
1817 u32 rsc_cnt = le32_to_cpu(rsc_enabled);
1818
1819 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT;
1820 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1;
1821
1822 /* update ntc based on RSC value */
1823 ntc = le32_to_cpu(rx_desc->wb.upper.status_error);
1824 ntc &= IXGBE_RXDADV_NEXTP_MASK;
1825 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT;
1826 }
1827 }
1828
1829 /* if we are the last buffer then there is nothing else to do */
Alexander Duyckf8003262012-03-03 02:35:52 +00001830 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
1831 return false;
1832
Alexander Duyckf8003262012-03-03 02:35:52 +00001833 /* place skb in next buffer to be received */
1834 rx_ring->rx_buffer_info[ntc].skb = skb;
1835 rx_ring->rx_stats.non_eop_descs++;
1836
1837 return true;
1838}
1839
1840/**
Alexander Duyck19861ce2012-07-20 08:08:33 +00001841 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
1842 * @rx_ring: rx descriptor ring packet is being transacted on
1843 * @skb: pointer to current skb being adjusted
1844 *
1845 * This function is an ixgbe specific version of __pskb_pull_tail. The
1846 * main difference between this version and the original function is that
1847 * this function can make several assumptions about the state of things
1848 * that allow for significant optimizations versus the standard function.
1849 * As a result we can do things like drop a frag and maintain an accurate
1850 * truesize for the skb.
1851 */
1852static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring,
1853 struct sk_buff *skb)
1854{
1855 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1856 unsigned char *va;
1857 unsigned int pull_len;
1858
1859 /*
1860 * it is valid to use page_address instead of kmap since we are
1861 * working with pages allocated out of the lomem pool per
1862 * alloc_page(GFP_ATOMIC)
1863 */
1864 va = skb_frag_address(frag);
1865
1866 /*
1867 * we need the header to contain the greater of either ETH_HLEN or
1868 * 60 bytes if the skb->len is less than 60 for skb_pad.
1869 */
Alexander Duyck8496e3382014-09-05 19:22:18 -04001870 pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE);
Alexander Duyck19861ce2012-07-20 08:08:33 +00001871
1872 /* align pull length to size of long to optimize memcpy performance */
1873 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
1874
1875 /* update all of the pointers */
1876 skb_frag_size_sub(frag, pull_len);
1877 frag->page_offset += pull_len;
1878 skb->data_len -= pull_len;
1879 skb->tail += pull_len;
Alexander Duyck19861ce2012-07-20 08:08:33 +00001880}
1881
1882/**
Alexander Duyck42073d92012-07-20 08:08:28 +00001883 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
1884 * @rx_ring: rx descriptor ring packet is being transacted on
1885 * @skb: pointer to current skb being updated
1886 *
1887 * This function provides a basic DMA sync up for the first fragment of an
1888 * skb. The reason for doing this is that the first fragment cannot be
1889 * unmapped until we have reached the end of packet descriptor for a buffer
1890 * chain.
1891 */
1892static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring,
1893 struct sk_buff *skb)
1894{
1895 /* if the page was released unmap it, else just sync our portion */
1896 if (unlikely(IXGBE_CB(skb)->page_released)) {
Alexander Duyckf3213d92017-01-17 08:35:54 -08001897 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma,
1898 ixgbe_rx_pg_size(rx_ring),
1899 DMA_FROM_DEVICE,
1900 IXGBE_RX_DMA_ATTR);
Emil Tantilov0c5661e2018-02-23 12:39:41 -08001901 } else if (ring_uses_build_skb(rx_ring)) {
1902 unsigned long offset = (unsigned long)(skb->data) & ~PAGE_MASK;
1903
1904 dma_sync_single_range_for_cpu(rx_ring->dev,
1905 IXGBE_CB(skb)->dma,
1906 offset,
1907 skb_headlen(skb),
1908 DMA_FROM_DEVICE);
Alexander Duyck42073d92012-07-20 08:08:28 +00001909 } else {
1910 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1911
1912 dma_sync_single_range_for_cpu(rx_ring->dev,
1913 IXGBE_CB(skb)->dma,
1914 frag->page_offset,
Alexander Duyckf215af82017-01-17 08:35:44 -08001915 skb_frag_size(frag),
Alexander Duyck42073d92012-07-20 08:08:28 +00001916 DMA_FROM_DEVICE);
1917 }
Alexander Duyck42073d92012-07-20 08:08:28 +00001918}
1919
1920/**
Alexander Duyckf8003262012-03-03 02:35:52 +00001921 * ixgbe_cleanup_headers - Correct corrupted or empty headers
1922 * @rx_ring: rx descriptor ring packet is being transacted on
1923 * @rx_desc: pointer to the EOP Rx descriptor
1924 * @skb: pointer to current skb being fixed
1925 *
John Fastabend92470802017-04-24 03:30:17 -07001926 * Check if the skb is valid in the XDP case it will be an error pointer.
1927 * Return true in this case to abort processing and advance to next
1928 * descriptor.
1929 *
Alexander Duyckf8003262012-03-03 02:35:52 +00001930 * Check for corrupted packet headers caused by senders on the local L2
1931 * embedded NIC switch not setting up their Tx Descriptors right. These
1932 * should be very rare.
1933 *
1934 * Also address the case where we are pulling data in on pages only
1935 * and as such no data is present in the skb header.
1936 *
1937 * In addition if skb is not at least 60 bytes we need to pad it so that
1938 * it is large enough to qualify as a valid Ethernet frame.
1939 *
1940 * Returns true if an error was encountered and skb was freed.
1941 **/
1942static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
1943 union ixgbe_adv_rx_desc *rx_desc,
1944 struct sk_buff *skb)
1945{
Alexander Duyckf8003262012-03-03 02:35:52 +00001946 struct net_device *netdev = rx_ring->netdev;
Alexander Duyckf8003262012-03-03 02:35:52 +00001947
John Fastabend92470802017-04-24 03:30:17 -07001948 /* XDP packets use error pointer so abort at this point */
1949 if (IS_ERR(skb))
1950 return true;
1951
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08001952 /* Verify netdev is present, and that packet does not have any
1953 * errors that would be unacceptable to the netdev.
1954 */
1955 if (!netdev ||
1956 (unlikely(ixgbe_test_staterr(rx_desc,
1957 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) &&
1958 !(netdev->features & NETIF_F_RXALL)))) {
Alexander Duyckf8003262012-03-03 02:35:52 +00001959 dev_kfree_skb_any(skb);
1960 return true;
1961 }
1962
Alexander Duyck19861ce2012-07-20 08:08:33 +00001963 /* place header in linear portion of buffer */
Alexander Duyck6f429222017-01-17 08:37:13 -08001964 if (!skb_headlen(skb))
Alexander Duyckcf3fe7a2012-07-20 08:08:39 +00001965 ixgbe_pull_tail(rx_ring, skb);
Alexander Duyckf8003262012-03-03 02:35:52 +00001966
Alexander Duyck57efd442012-06-25 21:54:46 +00001967#ifdef IXGBE_FCOE
1968 /* do not attempt to pad FCoE Frames as this will disrupt DDP */
1969 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc))
1970 return false;
1971
1972#endif
Alexander Duycka94d9e22014-12-03 08:17:39 -08001973 /* if eth_skb_pad returns an error the skb was freed */
1974 if (eth_skb_pad(skb))
1975 return true;
Alexander Duyckf8003262012-03-03 02:35:52 +00001976
1977 return false;
1978}
1979
1980/**
Alexander Duyckf8003262012-03-03 02:35:52 +00001981 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
1982 * @rx_ring: rx descriptor ring to store buffers on
1983 * @old_buff: donor buffer to have page reused
1984 *
Alexander Duyck0549ae22012-07-20 08:08:18 +00001985 * Synchronizes page for reuse by the adapter
Alexander Duyckf8003262012-03-03 02:35:52 +00001986 **/
1987static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring,
1988 struct ixgbe_rx_buffer *old_buff)
1989{
1990 struct ixgbe_rx_buffer *new_buff;
1991 u16 nta = rx_ring->next_to_alloc;
Alexander Duyckf8003262012-03-03 02:35:52 +00001992
1993 new_buff = &rx_ring->rx_buffer_info[nta];
1994
1995 /* update, and store next to alloc */
1996 nta++;
1997 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
1998
Alexander Duyck3fd218762017-01-17 08:36:45 -08001999 /* Transfer page from old buffer to new buffer.
2000 * Move each member individually to avoid possible store
2001 * forwarding stalls and unnecessary copy of skb.
2002 */
2003 new_buff->dma = old_buff->dma;
2004 new_buff->page = old_buff->page;
2005 new_buff->page_offset = old_buff->page_offset;
2006 new_buff->pagecnt_bias = old_buff->pagecnt_bias;
Alexander Duyckf8003262012-03-03 02:35:52 +00002007}
2008
Alexander Duyck18cb6522014-11-14 00:56:29 +00002009static inline bool ixgbe_page_is_reserved(struct page *page)
2010{
Michal Hocko2f064f32015-08-21 14:11:51 -07002011 return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
Alexander Duyck18cb6522014-11-14 00:56:29 +00002012}
2013
Alexander Duyck3fd218762017-01-17 08:36:45 -08002014static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer)
Alexander Duyckf8003262012-03-03 02:35:52 +00002015{
Alexander Duyck3fd218762017-01-17 08:36:45 -08002016 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias;
2017 struct page *page = rx_buffer->page;
Alexander Duyck1b56cf42017-01-17 08:36:03 -08002018
Alexander Duyck09816fb2012-07-20 08:08:23 +00002019 /* avoid re-using remote pages */
Alexander Duyck18cb6522014-11-14 00:56:29 +00002020 if (unlikely(ixgbe_page_is_reserved(page)))
Alexander Duyck09816fb2012-07-20 08:08:23 +00002021 return false;
2022
2023#if (PAGE_SIZE < 8192)
2024 /* if we are only owner of page we can reuse it */
Alexander Duyck3fd218762017-01-17 08:36:45 -08002025 if (unlikely((page_ref_count(page) - pagecnt_bias) > 1))
Alexander Duyck0549ae22012-07-20 08:08:18 +00002026 return false;
Alexander Duyck09816fb2012-07-20 08:08:23 +00002027#else
Alexander Duyck3fd218762017-01-17 08:36:45 -08002028 /* The last offset is a bit aggressive in that we assume the
2029 * worst case of FCoE being enabled and using a 3K buffer.
2030 * However this should have minimal impact as the 1K extra is
2031 * still less than one buffer in size.
2032 */
2033#define IXGBE_LAST_OFFSET \
2034 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K)
2035 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET)
Alexander Duyck09816fb2012-07-20 08:08:23 +00002036 return false;
Alexander Duyck09816fb2012-07-20 08:08:23 +00002037#endif
Alexander Duyck0549ae22012-07-20 08:08:18 +00002038
Alexander Duyck1b56cf42017-01-17 08:36:03 -08002039 /* If we have drained the page fragment pool we need to update
2040 * the pagecnt_bias and page count so that we fully restock the
2041 * number of references the driver holds.
Alexander Duyck18cb6522014-11-14 00:56:29 +00002042 */
Björn Töpeled93a392018-03-22 10:02:36 +01002043 if (unlikely(pagecnt_bias == 1)) {
2044 page_ref_add(page, USHRT_MAX - 1);
Alexander Duyck1b56cf42017-01-17 08:36:03 -08002045 rx_buffer->pagecnt_bias = USHRT_MAX;
2046 }
Alexander Duyck18cb6522014-11-14 00:56:29 +00002047
Alexander Duyck0549ae22012-07-20 08:08:18 +00002048 return true;
Alexander Duyckf8003262012-03-03 02:35:52 +00002049}
2050
Alexander Duyckaf43da02017-01-17 08:35:34 -08002051/**
2052 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
2053 * @rx_ring: rx descriptor ring to transact packets on
2054 * @rx_buffer: buffer containing page to add
Alexander Duyckaf43da02017-01-17 08:35:34 -08002055 * @skb: sk_buff to place the data into
Tony Nguyen5ba643c2017-12-04 11:28:30 -08002056 * @size: size of data in rx_buffer
Alexander Duyckaf43da02017-01-17 08:35:34 -08002057 *
2058 * This function will add the data contained in rx_buffer->page to the skb.
2059 * This is done either through a direct copy if the data in the buffer is
2060 * less than the skb header size, otherwise it will just attach the page as
2061 * a frag to the skb.
2062 *
2063 * The function will then update the page offset if necessary and return
2064 * true if the buffer can be reused by the adapter.
2065 **/
Alexander Duyck3fd218762017-01-17 08:36:45 -08002066static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring,
Alexander Duyckaf43da02017-01-17 08:35:34 -08002067 struct ixgbe_rx_buffer *rx_buffer,
Alexander Duyck3fd218762017-01-17 08:36:45 -08002068 struct sk_buff *skb,
2069 unsigned int size)
Alexander Duyckaf43da02017-01-17 08:35:34 -08002070{
Alexander Duyckaf43da02017-01-17 08:35:34 -08002071#if (PAGE_SIZE < 8192)
Alexander Duyck4f4542b2017-01-17 08:36:14 -08002072 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2;
Alexander Duyckaf43da02017-01-17 08:35:34 -08002073#else
Alexander Duyck2de6aa32017-01-17 08:36:54 -08002074 unsigned int truesize = ring_uses_build_skb(rx_ring) ?
2075 SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) :
2076 SKB_DATA_ALIGN(size);
Alexander Duyckaf43da02017-01-17 08:35:34 -08002077#endif
Alexander Duyck3fd218762017-01-17 08:36:45 -08002078 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page,
Alexander Duyckaf43da02017-01-17 08:35:34 -08002079 rx_buffer->page_offset, size, truesize);
Alexander Duyck3fd218762017-01-17 08:36:45 -08002080#if (PAGE_SIZE < 8192)
2081 rx_buffer->page_offset ^= truesize;
2082#else
2083 rx_buffer->page_offset += truesize;
2084#endif
Alexander Duyckaf43da02017-01-17 08:35:34 -08002085}
2086
Alexander Duyck3fd218762017-01-17 08:36:45 -08002087static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring,
2088 union ixgbe_adv_rx_desc *rx_desc,
2089 struct sk_buff **skb,
2090 const unsigned int size)
Alexander Duyck18806c92012-07-20 08:08:44 +00002091{
2092 struct ixgbe_rx_buffer *rx_buffer;
Alexander Duyck18806c92012-07-20 08:08:44 +00002093
2094 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
Alexander Duyck3fd218762017-01-17 08:36:45 -08002095 prefetchw(rx_buffer->page);
2096 *skb = rx_buffer->skb;
Alexander Duyck18806c92012-07-20 08:08:44 +00002097
Alexander Duyck3fd218762017-01-17 08:36:45 -08002098 /* Delay unmapping of the first packet. It carries the header
2099 * information, HW may still access the header after the writeback.
2100 * Only unmap it when EOP is reached
2101 */
2102 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) {
2103 if (!*skb)
2104 goto skip_sync;
Alexander Duyck18806c92012-07-20 08:08:44 +00002105 } else {
Alexander Duyck3fd218762017-01-17 08:36:45 -08002106 if (*skb)
2107 ixgbe_dma_sync_frag(rx_ring, *skb);
Alexander Duyck18806c92012-07-20 08:08:44 +00002108 }
2109
Alexander Duyck3fd218762017-01-17 08:36:45 -08002110 /* we are reusing so sync this buffer for CPU use */
2111 dma_sync_single_range_for_cpu(rx_ring->dev,
2112 rx_buffer->dma,
2113 rx_buffer->page_offset,
2114 size,
2115 DMA_FROM_DEVICE);
2116skip_sync:
2117 rx_buffer->pagecnt_bias--;
2118
2119 return rx_buffer;
2120}
2121
2122static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring,
2123 struct ixgbe_rx_buffer *rx_buffer,
2124 struct sk_buff *skb)
2125{
2126 if (ixgbe_can_reuse_rx_page(rx_buffer)) {
Alexander Duyck18806c92012-07-20 08:08:44 +00002127 /* hand second half of page back to the ring */
2128 ixgbe_reuse_rx_page(rx_ring, rx_buffer);
Alexander Duyck18806c92012-07-20 08:08:44 +00002129 } else {
John Fastabend92470802017-04-24 03:30:17 -07002130 if (!IS_ERR(skb) && IXGBE_CB(skb)->dma == rx_buffer->dma) {
Alexander Duyck1b56cf42017-01-17 08:36:03 -08002131 /* the page has been released from the ring */
2132 IXGBE_CB(skb)->page_released = true;
2133 } else {
2134 /* we are not reusing the buffer so unmap it */
2135 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma,
2136 ixgbe_rx_pg_size(rx_ring),
2137 DMA_FROM_DEVICE,
2138 IXGBE_RX_DMA_ATTR);
2139 }
Alexander Duyck3fd218762017-01-17 08:36:45 -08002140 __page_frag_cache_drain(rx_buffer->page,
Alexander Duyck1b56cf42017-01-17 08:36:03 -08002141 rx_buffer->pagecnt_bias);
Alexander Duyck18806c92012-07-20 08:08:44 +00002142 }
2143
Alexander Duyck3fd218762017-01-17 08:36:45 -08002144 /* clear contents of rx_buffer */
Alexander Duyck18806c92012-07-20 08:08:44 +00002145 rx_buffer->page = NULL;
Alexander Duyck3fd218762017-01-17 08:36:45 -08002146 rx_buffer->skb = NULL;
2147}
2148
2149static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring,
2150 struct ixgbe_rx_buffer *rx_buffer,
John Fastabend92470802017-04-24 03:30:17 -07002151 struct xdp_buff *xdp,
2152 union ixgbe_adv_rx_desc *rx_desc)
Alexander Duyck3fd218762017-01-17 08:36:45 -08002153{
John Fastabend92470802017-04-24 03:30:17 -07002154 unsigned int size = xdp->data_end - xdp->data;
Alexander Duyck3fd218762017-01-17 08:36:45 -08002155#if (PAGE_SIZE < 8192)
2156 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2;
2157#else
John Fastabend92470802017-04-24 03:30:17 -07002158 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end -
2159 xdp->data_hard_start);
Alexander Duyck3fd218762017-01-17 08:36:45 -08002160#endif
2161 struct sk_buff *skb;
2162
2163 /* prefetch first cache line of first page */
John Fastabend92470802017-04-24 03:30:17 -07002164 prefetch(xdp->data);
Alexander Duyck3fd218762017-01-17 08:36:45 -08002165#if L1_CACHE_BYTES < 128
John Fastabend92470802017-04-24 03:30:17 -07002166 prefetch(xdp->data + L1_CACHE_BYTES);
Alexander Duyck3fd218762017-01-17 08:36:45 -08002167#endif
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002168 /* Note, we get here by enabling legacy-rx via:
2169 *
2170 * ethtool --set-priv-flags <dev> legacy-rx on
2171 *
2172 * In this mode, we currently get 0 extra XDP headroom as
2173 * opposed to having legacy-rx off, where we process XDP
2174 * packets going to stack via ixgbe_build_skb(). The latter
2175 * provides us currently with 192 bytes of headroom.
2176 *
2177 * For ixgbe_construct_skb() mode it means that the
2178 * xdp->data_meta will always point to xdp->data, since
2179 * the helper cannot expand the head. Should this ever
2180 * change in future for legacy-rx mode on, then lets also
2181 * add xdp->data_meta handling here.
2182 */
Alexander Duyck3fd218762017-01-17 08:36:45 -08002183
2184 /* allocate a skb to store the frags */
2185 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE);
2186 if (unlikely(!skb))
2187 return NULL;
2188
2189 if (size > IXGBE_RX_HDR_SIZE) {
2190 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))
2191 IXGBE_CB(skb)->dma = rx_buffer->dma;
2192
2193 skb_add_rx_frag(skb, 0, rx_buffer->page,
John Fastabend92470802017-04-24 03:30:17 -07002194 xdp->data - page_address(rx_buffer->page),
Alexander Duyck3fd218762017-01-17 08:36:45 -08002195 size, truesize);
2196#if (PAGE_SIZE < 8192)
2197 rx_buffer->page_offset ^= truesize;
2198#else
2199 rx_buffer->page_offset += truesize;
2200#endif
2201 } else {
John Fastabend92470802017-04-24 03:30:17 -07002202 memcpy(__skb_put(skb, size),
2203 xdp->data, ALIGN(size, sizeof(long)));
Alexander Duyck3fd218762017-01-17 08:36:45 -08002204 rx_buffer->pagecnt_bias++;
2205 }
Alexander Duyck18806c92012-07-20 08:08:44 +00002206
2207 return skb;
Alexander Duyckf8003262012-03-03 02:35:52 +00002208}
2209
Alexander Duyck6f429222017-01-17 08:37:13 -08002210static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring,
2211 struct ixgbe_rx_buffer *rx_buffer,
John Fastabend92470802017-04-24 03:30:17 -07002212 struct xdp_buff *xdp,
2213 union ixgbe_adv_rx_desc *rx_desc)
Alexander Duyck6f429222017-01-17 08:37:13 -08002214{
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002215 unsigned int metasize = xdp->data - xdp->data_meta;
Alexander Duyck6f429222017-01-17 08:37:13 -08002216#if (PAGE_SIZE < 8192)
2217 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2;
2218#else
2219 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) +
John Fastabend92470802017-04-24 03:30:17 -07002220 SKB_DATA_ALIGN(xdp->data_end -
2221 xdp->data_hard_start);
Alexander Duyck6f429222017-01-17 08:37:13 -08002222#endif
2223 struct sk_buff *skb;
2224
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002225 /* Prefetch first cache line of first page. If xdp->data_meta
2226 * is unused, this points extactly as xdp->data, otherwise we
2227 * likely have a consumer accessing first few bytes of meta
2228 * data, and then actual data.
2229 */
2230 prefetch(xdp->data_meta);
Alexander Duyck6f429222017-01-17 08:37:13 -08002231#if L1_CACHE_BYTES < 128
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002232 prefetch(xdp->data_meta + L1_CACHE_BYTES);
Alexander Duyck6f429222017-01-17 08:37:13 -08002233#endif
2234
John Fastabend92470802017-04-24 03:30:17 -07002235 /* build an skb to around the page buffer */
2236 skb = build_skb(xdp->data_hard_start, truesize);
Alexander Duyck6f429222017-01-17 08:37:13 -08002237 if (unlikely(!skb))
2238 return NULL;
2239
2240 /* update pointers within the skb to store the data */
John Fastabend92470802017-04-24 03:30:17 -07002241 skb_reserve(skb, xdp->data - xdp->data_hard_start);
2242 __skb_put(skb, xdp->data_end - xdp->data);
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002243 if (metasize)
2244 skb_metadata_set(skb, metasize);
Alexander Duyck6f429222017-01-17 08:37:13 -08002245
2246 /* record DMA address if this is the start of a chain of buffers */
2247 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))
2248 IXGBE_CB(skb)->dma = rx_buffer->dma;
2249
2250 /* update buffer offset */
2251#if (PAGE_SIZE < 8192)
2252 rx_buffer->page_offset ^= truesize;
2253#else
2254 rx_buffer->page_offset += truesize;
2255#endif
2256
2257 return skb;
2258}
2259
John Fastabend92470802017-04-24 03:30:17 -07002260#define IXGBE_XDP_PASS 0
2261#define IXGBE_XDP_CONSUMED 1
John Fastabend33fdc822017-04-24 03:30:18 -07002262#define IXGBE_XDP_TX 2
John Fastabend92470802017-04-24 03:30:17 -07002263
John Fastabend33fdc822017-04-24 03:30:18 -07002264static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter *adapter,
2265 struct xdp_buff *xdp);
2266
2267static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
2268 struct ixgbe_ring *rx_ring,
John Fastabend92470802017-04-24 03:30:17 -07002269 struct xdp_buff *xdp)
2270{
John Fastabend64530732017-07-17 09:28:12 -07002271 int err, result = IXGBE_XDP_PASS;
John Fastabend92470802017-04-24 03:30:17 -07002272 struct bpf_prog *xdp_prog;
2273 u32 act;
2274
2275 rcu_read_lock();
2276 xdp_prog = READ_ONCE(rx_ring->xdp_prog);
2277
2278 if (!xdp_prog)
2279 goto xdp_out;
2280
2281 act = bpf_prog_run_xdp(xdp_prog, xdp);
2282 switch (act) {
2283 case XDP_PASS:
2284 break;
John Fastabend33fdc822017-04-24 03:30:18 -07002285 case XDP_TX:
2286 result = ixgbe_xmit_xdp_ring(adapter, xdp);
2287 break;
John Fastabend64530732017-07-17 09:28:12 -07002288 case XDP_REDIRECT:
John Fastabend5acaee02017-07-17 09:28:35 -07002289 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog);
John Fastabend64530732017-07-17 09:28:12 -07002290 if (!err)
2291 result = IXGBE_XDP_TX;
2292 else
2293 result = IXGBE_XDP_CONSUMED;
2294 break;
John Fastabend92470802017-04-24 03:30:17 -07002295 default:
2296 bpf_warn_invalid_xdp_action(act);
Tony Nguyen93df9462017-05-31 04:43:47 -07002297 /* fallthrough */
John Fastabend92470802017-04-24 03:30:17 -07002298 case XDP_ABORTED:
2299 trace_xdp_exception(rx_ring->netdev, xdp_prog, act);
2300 /* fallthrough -- handle aborts by dropping packet */
2301 case XDP_DROP:
2302 result = IXGBE_XDP_CONSUMED;
2303 break;
2304 }
2305xdp_out:
2306 rcu_read_unlock();
2307 return ERR_PTR(-result);
2308}
2309
John Fastabend33fdc822017-04-24 03:30:18 -07002310static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring,
2311 struct ixgbe_rx_buffer *rx_buffer,
2312 unsigned int size)
2313{
2314#if (PAGE_SIZE < 8192)
2315 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2;
2316
2317 rx_buffer->page_offset ^= truesize;
2318#else
2319 unsigned int truesize = ring_uses_build_skb(rx_ring) ?
2320 SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) :
2321 SKB_DATA_ALIGN(size);
2322
2323 rx_buffer->page_offset += truesize;
2324#endif
2325}
2326
Alexander Duyckf8003262012-03-03 02:35:52 +00002327/**
2328 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
2329 * @q_vector: structure containing interrupt and ring information
2330 * @rx_ring: rx descriptor ring to transact packets on
2331 * @budget: Total limit on number of packets to process
2332 *
2333 * This function provides a "bounce buffer" approach to Rx interrupt
2334 * processing. The advantage to this is that on systems that have
2335 * expensive overhead for IOMMU access this provides a means of avoiding
2336 * it by maintaining the mapping of the page to the syste.
2337 *
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002338 * Returns amount of work completed
Alexander Duyckf8003262012-03-03 02:35:52 +00002339 **/
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002340static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002341 struct ixgbe_ring *rx_ring,
Alexander Duyckf4de00e2012-09-25 00:29:37 +00002342 const int budget)
Auke Kok9a799d72007-09-15 14:07:45 -07002343{
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002344 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Alexander Duyckf8003262012-03-03 02:35:52 +00002345 struct ixgbe_adapter *adapter = q_vector->adapter;
John Fastabend33fdc822017-04-24 03:30:18 -07002346#ifdef IXGBE_FCOE
Mark Rustad4ffdf912012-07-18 06:05:50 +00002347 int ddp_bytes;
2348 unsigned int mss = 0;
Yi Zou3d8fd382009-06-08 14:38:44 +00002349#endif /* IXGBE_FCOE */
Alexander Duyckf8003262012-03-03 02:35:52 +00002350 u16 cleaned_count = ixgbe_desc_unused(rx_ring);
John Fastabend7379f972017-03-28 09:47:03 -07002351 bool xdp_xmit = false;
Jesper Dangaard Brouer99ffc5a2018-01-03 11:25:29 +01002352 struct xdp_buff xdp;
2353
2354 xdp.rxq = &rx_ring->xdp_rxq;
Auke Kok9a799d72007-09-15 14:07:45 -07002355
Eric W. Biedermanfdabfc8a2014-03-14 18:00:41 -07002356 while (likely(total_rx_packets < budget)) {
Alexander Duyckf8003262012-03-03 02:35:52 +00002357 union ixgbe_adv_rx_desc *rx_desc;
Alexander Duyck3fd218762017-01-17 08:36:45 -08002358 struct ixgbe_rx_buffer *rx_buffer;
Alexander Duyckf8003262012-03-03 02:35:52 +00002359 struct sk_buff *skb;
Alexander Duyck3fd218762017-01-17 08:36:45 -08002360 unsigned int size;
Auke Kok9a799d72007-09-15 14:07:45 -07002361
Alexander Duyckf8003262012-03-03 02:35:52 +00002362 /* return some buffers to hardware, one at a time is too slow */
2363 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
2364 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
2365 cleaned_count = 0;
2366 }
Auke Kok9a799d72007-09-15 14:07:45 -07002367
Alexander Duyck18806c92012-07-20 08:08:44 +00002368 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean);
Alexander Duyck3fd218762017-01-17 08:36:45 -08002369 size = le16_to_cpu(rx_desc->wb.upper.length);
2370 if (!size)
Alexander Duyckf8003262012-03-03 02:35:52 +00002371 break;
Alexander Duyckc267fc12010-11-16 19:27:00 -08002372
Alexander Duyck124b74c2014-12-11 15:02:28 -08002373 /* This memory barrier is needed to keep us from reading
Alexander Duyckf8003262012-03-03 02:35:52 +00002374 * any other fields out of the rx_desc until we know the
Alexander Duyck124b74c2014-12-11 15:02:28 -08002375 * descriptor has been written back
Alexander Duyckf8003262012-03-03 02:35:52 +00002376 */
Alexander Duyck124b74c2014-12-11 15:02:28 -08002377 dma_rmb();
Auke Kok9a799d72007-09-15 14:07:45 -07002378
Alexander Duyck3fd218762017-01-17 08:36:45 -08002379 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size);
2380
Alexander Duyck18806c92012-07-20 08:08:44 +00002381 /* retrieve a buffer from the ring */
John Fastabend92470802017-04-24 03:30:17 -07002382 if (!skb) {
2383 xdp.data = page_address(rx_buffer->page) +
2384 rx_buffer->page_offset;
Daniel Borkmann366a88f2017-09-25 02:25:55 +02002385 xdp.data_meta = xdp.data;
John Fastabend92470802017-04-24 03:30:17 -07002386 xdp.data_hard_start = xdp.data -
2387 ixgbe_rx_offset(rx_ring);
2388 xdp.data_end = xdp.data + size;
2389
John Fastabend33fdc822017-04-24 03:30:18 -07002390 skb = ixgbe_run_xdp(adapter, rx_ring, &xdp);
John Fastabend92470802017-04-24 03:30:17 -07002391 }
2392
2393 if (IS_ERR(skb)) {
John Fastabend7379f972017-03-28 09:47:03 -07002394 if (PTR_ERR(skb) == -IXGBE_XDP_TX) {
2395 xdp_xmit = true;
John Fastabend33fdc822017-04-24 03:30:18 -07002396 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size);
John Fastabend7379f972017-03-28 09:47:03 -07002397 } else {
John Fastabend33fdc822017-04-24 03:30:18 -07002398 rx_buffer->pagecnt_bias++;
John Fastabend7379f972017-03-28 09:47:03 -07002399 }
John Fastabend92470802017-04-24 03:30:17 -07002400 total_rx_packets++;
2401 total_rx_bytes += size;
John Fastabend92470802017-04-24 03:30:17 -07002402 } else if (skb) {
Alexander Duyck3fd218762017-01-17 08:36:45 -08002403 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size);
John Fastabend92470802017-04-24 03:30:17 -07002404 } else if (ring_uses_build_skb(rx_ring)) {
Alexander Duyck6f429222017-01-17 08:37:13 -08002405 skb = ixgbe_build_skb(rx_ring, rx_buffer,
John Fastabend92470802017-04-24 03:30:17 -07002406 &xdp, rx_desc);
2407 } else {
Alexander Duyck3fd218762017-01-17 08:36:45 -08002408 skb = ixgbe_construct_skb(rx_ring, rx_buffer,
John Fastabend92470802017-04-24 03:30:17 -07002409 &xdp, rx_desc);
2410 }
Alexander Duyckf8003262012-03-03 02:35:52 +00002411
Alexander Duyck18806c92012-07-20 08:08:44 +00002412 /* exit if we failed to retrieve a buffer */
Alexander Duyck3fd218762017-01-17 08:36:45 -08002413 if (!skb) {
2414 rx_ring->rx_stats.alloc_rx_buff_failed++;
2415 rx_buffer->pagecnt_bias++;
Alexander Duyck18806c92012-07-20 08:08:44 +00002416 break;
Alexander Duyck3fd218762017-01-17 08:36:45 -08002417 }
Alexander Duyck4c1975d2012-01-31 02:59:23 +00002418
Alexander Duyck3fd218762017-01-17 08:36:45 -08002419 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb);
Auke Kok9a799d72007-09-15 14:07:45 -07002420 cleaned_count++;
Alexander Duyckf8212f92009-04-27 22:42:37 +00002421
Alexander Duyckf8003262012-03-03 02:35:52 +00002422 /* place incomplete frames back on ring for completion */
2423 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb))
2424 continue;
Alexander Duyckf8212f92009-04-27 22:42:37 +00002425
Alexander Duyckf8003262012-03-03 02:35:52 +00002426 /* verify the packet layout is correct */
2427 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
2428 continue;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002429
2430 /* probably a little skewed due to removing CRC */
2431 total_rx_bytes += skb->len;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08002432
Alexander Duyck8a0da212012-01-31 02:59:49 +00002433 /* populate checksum, timestamp, VLAN, and protocol */
2434 ixgbe_process_skb_fields(rx_ring, rx_desc, skb);
2435
Yi Zou332d4a72009-05-13 13:11:53 +00002436#ifdef IXGBE_FCOE
2437 /* if ddp, not passing to ULD unless for FCP_RSP or error */
Alexander Duyck57efd442012-06-25 21:54:46 +00002438 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) {
Alexander Duyckf56e0cb2012-01-31 02:59:39 +00002439 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
Mark Rustad4ffdf912012-07-18 06:05:50 +00002440 /* include DDPed FCoE data */
2441 if (ddp_bytes > 0) {
2442 if (!mss) {
2443 mss = rx_ring->netdev->mtu -
2444 sizeof(struct fcoe_hdr) -
2445 sizeof(struct fc_frame_header) -
2446 sizeof(struct fcoe_crc_eof);
2447 if (mss > 512)
2448 mss &= ~511;
2449 }
2450 total_rx_bytes += ddp_bytes;
2451 total_rx_packets += DIV_ROUND_UP(ddp_bytes,
2452 mss);
2453 }
David S. Miller823dcd22011-08-20 10:39:12 -07002454 if (!ddp_bytes) {
2455 dev_kfree_skb_any(skb);
Alexander Duyckf8003262012-03-03 02:35:52 +00002456 continue;
David S. Miller823dcd22011-08-20 10:39:12 -07002457 }
Yi Zou3d8fd382009-06-08 14:38:44 +00002458 }
Alexander Duyckf8003262012-03-03 02:35:52 +00002459
Yi Zou332d4a72009-05-13 13:11:53 +00002460#endif /* IXGBE_FCOE */
Alexander Duyck8a0da212012-01-31 02:59:49 +00002461 ixgbe_rx_skb(q_vector, skb);
Auke Kok9a799d72007-09-15 14:07:45 -07002462
Alexander Duyckf8003262012-03-03 02:35:52 +00002463 /* update budget accounting */
Alexander Duyckf4de00e2012-09-25 00:29:37 +00002464 total_rx_packets++;
Eric W. Biedermanfdabfc8a2014-03-14 18:00:41 -07002465 }
Auke Kok9a799d72007-09-15 14:07:45 -07002466
John Fastabend7379f972017-03-28 09:47:03 -07002467 if (xdp_xmit) {
2468 struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()];
2469
2470 /* Force memory writes to complete before letting h/w
2471 * know there are new descriptors to fetch.
2472 */
2473 wmb();
2474 writel(ring->next_to_use, ring->tail);
John Fastabend11393cc2017-07-17 09:29:40 -07002475
2476 xdp_do_flush_map();
John Fastabend7379f972017-03-28 09:47:03 -07002477 }
2478
Alexander Duyckc267fc12010-11-16 19:27:00 -08002479 u64_stats_update_begin(&rx_ring->syncp);
2480 rx_ring->stats.packets += total_rx_packets;
2481 rx_ring->stats.bytes += total_rx_bytes;
2482 u64_stats_update_end(&rx_ring->syncp);
Alexander Duyckbd198052011-06-11 01:45:08 +00002483 q_vector->rx.total_packets += total_rx_packets;
2484 q_vector->rx.total_bytes += total_rx_bytes;
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00002485
Eliezer Tamir5a85e732013-06-10 11:40:20 +03002486 return total_rx_packets;
Auke Kok9a799d72007-09-15 14:07:45 -07002487}
2488
Auke Kok9a799d72007-09-15 14:07:45 -07002489/**
2490 * ixgbe_configure_msix - Configure MSI-X hardware
2491 * @adapter: board private structure
2492 *
2493 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
2494 * interrupts.
2495 **/
2496static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
2497{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002498 struct ixgbe_q_vector *q_vector;
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002499 int v_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002500 u32 mask;
Auke Kok9a799d72007-09-15 14:07:45 -07002501
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00002502 /* Populate MSIX to EITR Select */
2503 if (adapter->num_vfs > 32) {
Jacob Kellerb4f47a42016-04-13 16:08:22 -07002504 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1;
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00002505 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2506 }
2507
Jesse Brandeburg4df10462009-03-13 22:15:31 +00002508 /*
2509 * Populate the IVAR table and set the ITR values to the
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002510 * corresponding register.
2511 */
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00002512 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002513 struct ixgbe_ring *ring;
Alexander Duyck7a921c92009-05-06 10:43:28 +00002514 q_vector = adapter->q_vector[v_idx];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002515
Alexander Duycka5579282012-02-08 07:50:04 +00002516 ixgbe_for_each_ring(ring, q_vector->rx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002517 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002518
Alexander Duycka5579282012-02-08 07:50:04 +00002519 ixgbe_for_each_ring(ring, q_vector->tx)
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00002520 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002521
Alexander Duyckfe49f042009-06-04 16:00:09 +00002522 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07002523 }
2524
Alexander Duyckbd508172010-11-16 19:27:03 -08002525 switch (adapter->hw.mac.type) {
2526 case ixgbe_mac_82598EB:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002527 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
Joe Perchese8e9f692010-09-07 21:34:53 +00002528 v_idx);
Alexander Duyckbd508172010-11-16 19:27:03 -08002529 break;
2530 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002531 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002532 case ixgbe_mac_X550:
2533 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07002534 case ixgbe_mac_x550em_a:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002535 ixgbe_set_ivar(adapter, -1, 1, v_idx);
Alexander Duyckbd508172010-11-16 19:27:03 -08002536 break;
Alexander Duyckbd508172010-11-16 19:27:03 -08002537 default:
2538 break;
2539 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002540 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
Auke Kok9a799d72007-09-15 14:07:45 -07002541
Jesse Brandeburg41fb9242008-09-11 19:55:58 -07002542 /* set up to autoclear timer, and the vectors */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002543 mask = IXGBE_EIMS_ENABLE_MASK;
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002544 mask &= ~(IXGBE_EIMS_OTHER |
2545 IXGBE_EIMS_MAILBOX |
2546 IXGBE_EIMS_LSC);
2547
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002548 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
Auke Kok9a799d72007-09-15 14:07:45 -07002549}
2550
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002551/**
2552 * ixgbe_update_itr - update the dynamic ITR value based on statistics
Alexander Duyckbd198052011-06-11 01:45:08 +00002553 * @q_vector: structure containing interrupt and ring information
2554 * @ring_container: structure containing ring performance data
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002555 *
2556 * Stores a new ITR value based on packets and byte
2557 * counts during the last interrupt. The advantage of per interrupt
2558 * computation is faster updates and more accurate ITR for the current
2559 * traffic pattern. Constants in this function were computed
2560 * based on theoretical maximum wire speed and thresholds were set based
2561 * on testing data as well as attempting to minimize response time
2562 * while increasing bulk throughput.
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002563 **/
Alexander Duyckbd198052011-06-11 01:45:08 +00002564static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
2565 struct ixgbe_ring_container *ring_container)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002566{
Alexander Duyckb4ded832017-09-25 14:55:36 -07002567 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS |
2568 IXGBE_ITR_ADAPTIVE_LATENCY;
2569 unsigned int avg_wire_size, packets, bytes;
2570 unsigned long next_update = jiffies;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002571
Alexander Duyckb4ded832017-09-25 14:55:36 -07002572 /* If we don't have any rings just leave ourselves set for maximum
2573 * possible latency so we take ourselves out of the equation.
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002574 */
Alexander Duyckb4ded832017-09-25 14:55:36 -07002575 if (!ring_container->ring)
Don Skidmorebdbeefe2013-03-02 07:17:37 +00002576 return;
2577
Alexander Duyckb4ded832017-09-25 14:55:36 -07002578 /* If we didn't update within up to 1 - 2 jiffies we can assume
2579 * that either packets are coming in so slow there hasn't been
2580 * any work, or that there is so much work that NAPI is dealing
2581 * with interrupt moderation and we don't need to do anything.
2582 */
2583 if (time_after(next_update, ring_container->next_update))
2584 goto clear_counts;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002585
Alexander Duyckb4ded832017-09-25 14:55:36 -07002586 packets = ring_container->total_packets;
2587
2588 /* We have no packets to actually measure against. This means
2589 * either one of the other queues on this vector is active or
2590 * we are a Tx queue doing TSO with too high of an interrupt rate.
2591 *
2592 * When this occurs just tick up our delay by the minimum value
2593 * and hope that this extra delay will prevent us from being called
2594 * without any work on our queue.
2595 */
2596 if (!packets) {
2597 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC;
2598 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS)
2599 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS;
2600 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY;
2601 goto clear_counts;
2602 }
2603
2604 bytes = ring_container->total_bytes;
2605
2606 /* If packets are less than 4 or bytes are less than 9000 assume
2607 * insufficient data to use bulk rate limiting approach. We are
2608 * likely latency driven.
2609 */
2610 if (packets < 4 && bytes < 9000) {
2611 itr = IXGBE_ITR_ADAPTIVE_LATENCY;
2612 goto adjust_by_size;
2613 }
2614
2615 /* Between 4 and 48 we can assume that our current interrupt delay
2616 * is only slightly too low. As such we should increase it by a small
2617 * fixed amount.
2618 */
2619 if (packets < 48) {
2620 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC;
2621 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS)
2622 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS;
2623 goto clear_counts;
2624 }
2625
2626 /* Between 48 and 96 is our "goldilocks" zone where we are working
2627 * out "just right". Just report that our current ITR is good for us.
2628 */
2629 if (packets < 96) {
2630 itr = q_vector->itr >> 2;
2631 goto clear_counts;
2632 }
2633
2634 /* If packet count is 96 or greater we are likely looking at a slight
2635 * overrun of the delay we want. Try halving our delay to see if that
2636 * will cut the number of packets in half per interrupt.
2637 */
2638 if (packets < 256) {
2639 itr = q_vector->itr >> 3;
2640 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS)
2641 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS;
2642 goto clear_counts;
2643 }
2644
2645 /* The paths below assume we are dealing with a bulk ITR since number
2646 * of packets is 256 or greater. We are just going to have to compute
2647 * a value and try to bring the count under control, though for smaller
2648 * packet sizes there isn't much we can do as NAPI polling will likely
2649 * be kicking in sooner rather than later.
2650 */
2651 itr = IXGBE_ITR_ADAPTIVE_BULK;
2652
2653adjust_by_size:
2654 /* If packet counts are 256 or greater we can assume we have a gross
2655 * overestimation of what the rate should be. Instead of trying to fine
2656 * tune it just use the formula below to try and dial in an exact value
2657 * give the current packet size of the frame.
2658 */
2659 avg_wire_size = bytes / packets;
2660
2661 /* The following is a crude approximation of:
2662 * wmem_default / (size + overhead) = desired_pkts_per_int
2663 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate
2664 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value
2665 *
2666 * Assuming wmem_default is 212992 and overhead is 640 bytes per
2667 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the
2668 * formula down to
2669 *
2670 * (170 * (size + 24)) / (size + 640) = ITR
2671 *
2672 * We first do some math on the packet size and then finally bitshift
2673 * by 8 after rounding up. We also have to account for PCIe link speed
2674 * difference as ITR scales based on this.
2675 */
2676 if (avg_wire_size <= 60) {
2677 /* Start at 50k ints/sec */
2678 avg_wire_size = 5120;
2679 } else if (avg_wire_size <= 316) {
2680 /* 50K ints/sec to 16K ints/sec */
2681 avg_wire_size *= 40;
2682 avg_wire_size += 2720;
2683 } else if (avg_wire_size <= 1084) {
2684 /* 16K ints/sec to 9.2K ints/sec */
2685 avg_wire_size *= 15;
2686 avg_wire_size += 11452;
2687 } else if (avg_wire_size <= 1980) {
2688 /* 9.2K ints/sec to 8K ints/sec */
2689 avg_wire_size *= 5;
2690 avg_wire_size += 22420;
2691 } else {
2692 /* plateau at a limit of 8K ints/sec */
2693 avg_wire_size = 32256;
2694 }
2695
2696 /* If we are in low latency mode half our delay which doubles the rate
2697 * to somewhere between 100K to 16K ints/sec
2698 */
2699 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY)
2700 avg_wire_size >>= 1;
2701
2702 /* Resultant value is 256 times larger than it needs to be. This
2703 * gives us room to adjust the value as needed to either increase
2704 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc.
2705 *
2706 * Use addition as we have already recorded the new latency flag
2707 * for the ITR value.
2708 */
2709 switch (q_vector->adapter->link_speed) {
2710 case IXGBE_LINK_SPEED_10GB_FULL:
2711 case IXGBE_LINK_SPEED_100_FULL:
2712 default:
2713 itr += DIV_ROUND_UP(avg_wire_size,
2714 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) *
2715 IXGBE_ITR_ADAPTIVE_MIN_INC;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002716 break;
Alexander Duyckb4ded832017-09-25 14:55:36 -07002717 case IXGBE_LINK_SPEED_2_5GB_FULL:
2718 case IXGBE_LINK_SPEED_1GB_FULL:
2719 case IXGBE_LINK_SPEED_10_FULL:
2720 itr += DIV_ROUND_UP(avg_wire_size,
2721 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) *
2722 IXGBE_ITR_ADAPTIVE_MIN_INC;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002723 break;
2724 }
2725
Alexander Duyckb4ded832017-09-25 14:55:36 -07002726clear_counts:
2727 /* write back value */
2728 ring_container->itr = itr;
2729
2730 /* next update should occur within next jiffy */
2731 ring_container->next_update = next_update + 1;
2732
Alexander Duyckbd198052011-06-11 01:45:08 +00002733 ring_container->total_bytes = 0;
2734 ring_container->total_packets = 0;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002735}
2736
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002737/**
2738 * ixgbe_write_eitr - write EITR register in hardware specific way
Alexander Duyckfe49f042009-06-04 16:00:09 +00002739 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002740 *
2741 * This function is made to be called by ethtool and by the driver
2742 * when it needs to update EITR registers at runtime. Hardware
2743 * specific quirks/differences are taken care of here.
2744 */
Alexander Duyckfe49f042009-06-04 16:00:09 +00002745void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002746{
Alexander Duyckfe49f042009-06-04 16:00:09 +00002747 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002748 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002749 int v_idx = q_vector->v_idx;
Alexander Duyck5d967eb2012-02-08 07:49:43 +00002750 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002751
Alexander Duyckbd508172010-11-16 19:27:03 -08002752 switch (adapter->hw.mac.type) {
2753 case ixgbe_mac_82598EB:
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002754 /* must write high and low 16 bits to reset counter */
2755 itr_reg |= (itr_reg << 16);
Alexander Duyckbd508172010-11-16 19:27:03 -08002756 break;
2757 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002758 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002759 case ixgbe_mac_X550:
2760 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07002761 case ixgbe_mac_x550em_a:
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002762 /*
2763 * set the WDIS bit to not clear the timer bits and cause an
2764 * immediate assertion of the interrupt
2765 */
2766 itr_reg |= IXGBE_EITR_CNT_WDIS;
Alexander Duyckbd508172010-11-16 19:27:03 -08002767 break;
2768 default:
2769 break;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002770 }
2771 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
2772}
2773
Alexander Duyckbd198052011-06-11 01:45:08 +00002774static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002775{
Alexander Duyckb4ded832017-09-25 14:55:36 -07002776 u32 new_itr;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002777
Alexander Duyckbd198052011-06-11 01:45:08 +00002778 ixgbe_update_itr(q_vector, &q_vector->tx);
2779 ixgbe_update_itr(q_vector, &q_vector->rx);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002780
Alexander Duyckb4ded832017-09-25 14:55:36 -07002781 /* use the smallest value of new ITR delay calculations */
2782 new_itr = min(q_vector->rx.itr, q_vector->tx.itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002783
Alexander Duyckb4ded832017-09-25 14:55:36 -07002784 /* Clear latency flag if set, shift into correct position */
2785 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY;
2786 new_itr <<= 2;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002787
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00002788 if (new_itr != q_vector->itr) {
Alexander Duyckbd198052011-06-11 01:45:08 +00002789 /* save the algorithm value here */
Alexander Duyck5d967eb2012-02-08 07:49:43 +00002790 q_vector->itr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002791
2792 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002793 }
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002794}
2795
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002796/**
Alexander Duyckde88eee2012-02-08 07:49:59 +00002797 * ixgbe_check_overtemp_subtask - check for over temperature
Alexander Duyckf0f97782011-04-22 04:08:09 +00002798 * @adapter: pointer to adapter
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002799 **/
Alexander Duyckf0f97782011-04-22 04:08:09 +00002800static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002801{
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002802 struct ixgbe_hw *hw = &adapter->hw;
2803 u32 eicr = adapter->interrupt_event;
Mark Rustadb3eb4e12016-12-14 11:02:16 -08002804 s32 rc;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002805
Alexander Duyckf0f97782011-04-22 04:08:09 +00002806 if (test_bit(__IXGBE_DOWN, &adapter->state))
Joe Perches7ca647b2010-09-07 21:35:40 +00002807 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002808
Mark Rustad22cb4ff2017-04-25 13:55:25 -07002809 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
Alexander Duyckf0f97782011-04-22 04:08:09 +00002810 return;
2811
2812 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2813
Joe Perches7ca647b2010-09-07 21:35:40 +00002814 switch (hw->device_id) {
Alexander Duyckf0f97782011-04-22 04:08:09 +00002815 case IXGBE_DEV_ID_82599_T3_LOM:
2816 /*
2817 * Since the warning interrupt is for both ports
2818 * we don't have to check if:
2819 * - This interrupt wasn't for our port.
2820 * - We may have missed the interrupt so always have to
2821 * check if we got a LSC
2822 */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002823 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) &&
Alexander Duyckf0f97782011-04-22 04:08:09 +00002824 !(eicr & IXGBE_EICR_LSC))
2825 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002826
Alexander Duyckf0f97782011-04-22 04:08:09 +00002827 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
Josh Hay3d292262012-12-15 03:28:19 +00002828 u32 speed;
Alexander Duyckf0f97782011-04-22 04:08:09 +00002829 bool link_up = false;
2830
Josh Hay3d292262012-12-15 03:28:19 +00002831 hw->mac.ops.check_link(hw, &speed, &link_up, false);
Joe Perches7ca647b2010-09-07 21:35:40 +00002832
Alexander Duyckf0f97782011-04-22 04:08:09 +00002833 if (link_up)
2834 return;
2835 }
2836
2837 /* Check if this is not due to overtemp */
2838 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
2839 return;
2840
2841 break;
Mark Rustadb3eb4e12016-12-14 11:02:16 -08002842 case IXGBE_DEV_ID_X550EM_A_1G_T:
2843 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
2844 rc = hw->phy.ops.check_overtemp(hw);
2845 if (rc != IXGBE_ERR_OVERTEMP)
2846 return;
2847 break;
Joe Perches7ca647b2010-09-07 21:35:40 +00002848 default:
Don Skidmore597f22d2015-06-09 16:52:02 -07002849 if (adapter->hw.mac.type >= ixgbe_mac_X540)
2850 return;
Don Skidmore9a900ec2015-06-09 17:15:01 -07002851 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw)))
Joe Perches7ca647b2010-09-07 21:35:40 +00002852 return;
2853 break;
2854 }
Don Skidmoref44e7512015-06-09 16:36:23 -07002855 e_crit(drv, "%s\n", ixgbe_overheat_msg);
Alexander Duyckf0f97782011-04-22 04:08:09 +00002856
2857 adapter->interrupt_event = 0;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002858}
2859
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002860static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
2861{
2862 struct ixgbe_hw *hw = &adapter->hw;
2863
2864 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
Don Skidmore9a900ec2015-06-09 17:15:01 -07002865 (eicr & IXGBE_EICR_GPI_SDP1(hw))) {
Emil Tantilov396e7992010-07-01 20:05:12 +00002866 e_crit(probe, "Fan has stopped, replace the adapter\n");
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002867 /* write to clear the interrupt */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002868 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002869 }
2870}
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002871
Jacob Keller4f51bf72011-08-20 04:49:45 +00002872static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr)
2873{
Don Skidmore9a900ec2015-06-09 17:15:01 -07002874 struct ixgbe_hw *hw = &adapter->hw;
2875
Jacob Keller4f51bf72011-08-20 04:49:45 +00002876 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
2877 return;
2878
2879 switch (adapter->hw.mac.type) {
2880 case ixgbe_mac_82599EB:
2881 /*
2882 * Need to check link state so complete overtemp check
2883 * on service task
2884 */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002885 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) ||
2886 (eicr & IXGBE_EICR_LSC)) &&
Jacob Keller4f51bf72011-08-20 04:49:45 +00002887 (!test_bit(__IXGBE_DOWN, &adapter->state))) {
2888 adapter->interrupt_event = eicr;
2889 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2890 ixgbe_service_event_schedule(adapter);
2891 return;
2892 }
2893 return;
Mark Rustadb3eb4e12016-12-14 11:02:16 -08002894 case ixgbe_mac_x550em_a:
2895 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) {
2896 adapter->interrupt_event = eicr;
2897 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2898 ixgbe_service_event_schedule(adapter);
2899 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC,
2900 IXGBE_EICR_GPI_SDP0_X550EM_a);
2901 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR,
2902 IXGBE_EICR_GPI_SDP0_X550EM_a);
2903 }
2904 return;
2905 case ixgbe_mac_X550:
Jacob Keller4f51bf72011-08-20 04:49:45 +00002906 case ixgbe_mac_X540:
2907 if (!(eicr & IXGBE_EICR_TS))
2908 return;
2909 break;
2910 default:
2911 return;
2912 }
2913
Don Skidmoref44e7512015-06-09 16:36:23 -07002914 e_crit(drv, "%s\n", ixgbe_overheat_msg);
Jacob Keller4f51bf72011-08-20 04:49:45 +00002915}
2916
Don Skidmore45788d22015-06-09 16:59:04 -07002917static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
2918{
2919 switch (hw->mac.type) {
2920 case ixgbe_mac_82598EB:
2921 if (hw->phy.type == ixgbe_phy_nl)
2922 return true;
2923 return false;
2924 case ixgbe_mac_82599EB:
2925 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07002926 case ixgbe_mac_x550em_a:
Don Skidmore45788d22015-06-09 16:59:04 -07002927 switch (hw->mac.ops.get_media_type(hw)) {
2928 case ixgbe_media_type_fiber:
2929 case ixgbe_media_type_fiber_qsfp:
2930 return true;
2931 default:
2932 return false;
2933 }
2934 default:
2935 return false;
2936 }
2937}
2938
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002939static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
2940{
2941 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore4ccc6502015-09-02 13:47:54 -07002942 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002943
Don Skidmore4ccc6502015-09-02 13:47:54 -07002944 if (!ixgbe_is_sfp(hw))
2945 return;
2946
2947 /* Later MAC's use different SDP */
2948 if (hw->mac.type >= ixgbe_mac_X540)
2949 eicr_mask = IXGBE_EICR_GPI_SDP0_X540;
2950
2951 if (eicr & eicr_mask) {
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08002952 /* Clear the interrupt */
Don Skidmore4ccc6502015-09-02 13:47:54 -07002953 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask);
Alexander Duyck70864002011-04-27 09:13:56 +00002954 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2955 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
Mark Rustad58e7cd22015-08-08 16:18:48 -07002956 adapter->sfp_poll_time = 0;
Alexander Duyck70864002011-04-27 09:13:56 +00002957 ixgbe_service_event_schedule(adapter);
2958 }
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08002959 }
2960
Don Skidmore4ccc6502015-09-02 13:47:54 -07002961 if (adapter->hw.mac.type == ixgbe_mac_82599EB &&
2962 (eicr & IXGBE_EICR_GPI_SDP1(hw))) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002963 /* Clear the interrupt */
Don Skidmore9a900ec2015-06-09 17:15:01 -07002964 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
Alexander Duyck70864002011-04-27 09:13:56 +00002965 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2966 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
2967 ixgbe_service_event_schedule(adapter);
2968 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002969 }
2970}
2971
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002972static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
2973{
2974 struct ixgbe_hw *hw = &adapter->hw;
2975
2976 adapter->lsc_int++;
2977 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
2978 adapter->link_check_timeout = jiffies;
2979 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2980 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
Nelson, Shannon8a0717f2009-11-12 18:47:11 +00002981 IXGBE_WRITE_FLUSH(hw);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00002982 ixgbe_service_event_schedule(adapter);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002983 }
2984}
2985
Alexander Duyckfe49f042009-06-04 16:00:09 +00002986static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
2987 u64 qmask)
2988{
2989 u32 mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08002990 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002991
Alexander Duyckbd508172010-11-16 19:27:03 -08002992 switch (hw->mac.type) {
2993 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +00002994 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
Alexander Duyckbd508172010-11-16 19:27:03 -08002995 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
2996 break;
2997 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08002998 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00002999 case ixgbe_mac_X550:
3000 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003001 case ixgbe_mac_x550em_a:
Alexander Duyckfe49f042009-06-04 16:00:09 +00003002 mask = (qmask & 0xFFFFFFFF);
Alexander Duyckbd508172010-11-16 19:27:03 -08003003 if (mask)
3004 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
Alexander Duyckfe49f042009-06-04 16:00:09 +00003005 mask = (qmask >> 32);
Alexander Duyckbd508172010-11-16 19:27:03 -08003006 if (mask)
3007 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
3008 break;
3009 default:
3010 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +00003011 }
3012 /* skip the flush */
3013}
3014
3015static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00003016 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +00003017{
3018 u32 mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08003019 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00003020
Alexander Duyckbd508172010-11-16 19:27:03 -08003021 switch (hw->mac.type) {
3022 case ixgbe_mac_82598EB:
Alexander Duyckfe49f042009-06-04 16:00:09 +00003023 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
Alexander Duyckbd508172010-11-16 19:27:03 -08003024 IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
3025 break;
3026 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08003027 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003028 case ixgbe_mac_X550:
3029 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003030 case ixgbe_mac_x550em_a:
Alexander Duyckfe49f042009-06-04 16:00:09 +00003031 mask = (qmask & 0xFFFFFFFF);
Alexander Duyckbd508172010-11-16 19:27:03 -08003032 if (mask)
3033 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
Alexander Duyckfe49f042009-06-04 16:00:09 +00003034 mask = (qmask >> 32);
Alexander Duyckbd508172010-11-16 19:27:03 -08003035 if (mask)
3036 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
3037 break;
3038 default:
3039 break;
Alexander Duyckfe49f042009-06-04 16:00:09 +00003040 }
3041 /* skip the flush */
3042}
3043
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003044/**
Alexander Duyck2c4af692011-07-15 07:29:55 +00003045 * ixgbe_irq_enable - Enable default interrupt generation settings
3046 * @adapter: board private structure
Tony Nguyen5ba643c2017-12-04 11:28:30 -08003047 * @queues: enable irqs for queues
3048 * @flush: flush register write
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003049 **/
Alexander Duyck2c4af692011-07-15 07:29:55 +00003050static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
3051 bool flush)
Auke Kok9a799d72007-09-15 14:07:45 -07003052{
Don Skidmore9a900ec2015-06-09 17:15:01 -07003053 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck2c4af692011-07-15 07:29:55 +00003054 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07003055
Alexander Duyck2c4af692011-07-15 07:29:55 +00003056 /* don't reenable LSC while waiting for link */
3057 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
3058 mask &= ~IXGBE_EIMS_LSC;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003059
Alexander Duyck2c4af692011-07-15 07:29:55 +00003060 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
Jacob Keller4f51bf72011-08-20 04:49:45 +00003061 switch (adapter->hw.mac.type) {
3062 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07003063 mask |= IXGBE_EIMS_GPI_SDP0(hw);
Jacob Keller4f51bf72011-08-20 04:49:45 +00003064 break;
3065 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003066 case ixgbe_mac_X550:
3067 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003068 case ixgbe_mac_x550em_a:
Jacob Keller4f51bf72011-08-20 04:49:45 +00003069 mask |= IXGBE_EIMS_TS;
3070 break;
3071 default:
3072 break;
3073 }
Alexander Duyck2c4af692011-07-15 07:29:55 +00003074 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
Don Skidmore9a900ec2015-06-09 17:15:01 -07003075 mask |= IXGBE_EIMS_GPI_SDP1(hw);
Alexander Duyck2c4af692011-07-15 07:29:55 +00003076 switch (adapter->hw.mac.type) {
3077 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07003078 mask |= IXGBE_EIMS_GPI_SDP1(hw);
3079 mask |= IXGBE_EIMS_GPI_SDP2(hw);
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003080 /* fall through */
Don Skidmore858bc082011-08-04 09:28:30 +00003081 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003082 case ixgbe_mac_X550:
3083 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003084 case ixgbe_mac_x550em_a:
3085 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP ||
Mark Rustad2d40cd12016-04-01 12:18:35 -07003086 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP ||
Mark Rustad49425df2016-04-01 12:18:09 -07003087 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N)
Mark Rustadcbd45ec2015-08-08 16:17:51 -07003088 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw);
Don Skidmore597f22d2015-06-09 16:52:02 -07003089 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t)
3090 mask |= IXGBE_EICR_GPI_SDP0_X540;
Don Skidmore858bc082011-08-04 09:28:30 +00003091 mask |= IXGBE_EIMS_ECC;
Alexander Duyck2c4af692011-07-15 07:29:55 +00003092 mask |= IXGBE_EIMS_MAILBOX;
3093 break;
3094 default:
3095 break;
3096 }
Jacob Kellerdb0677f2012-08-24 07:46:54 +00003097
Alexander Duyck2c4af692011-07-15 07:29:55 +00003098 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
3099 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
3100 mask |= IXGBE_EIMS_FLOW_DIR;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003101
Alexander Duyck2c4af692011-07-15 07:29:55 +00003102 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
3103 if (queues)
3104 ixgbe_irq_enable_queues(adapter, ~0);
3105 if (flush)
3106 IXGBE_WRITE_FLUSH(&adapter->hw);
Auke Kok9a799d72007-09-15 14:07:45 -07003107}
3108
Alexander Duyck2c4af692011-07-15 07:29:55 +00003109static irqreturn_t ixgbe_msix_other(int irq, void *data)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003110{
Alexander Duyck2c4af692011-07-15 07:29:55 +00003111 struct ixgbe_adapter *adapter = data;
3112 struct ixgbe_hw *hw = &adapter->hw;
3113 u32 eicr;
Alexander Duyck91281fd2009-06-04 16:00:27 +00003114
Alexander Duyck2c4af692011-07-15 07:29:55 +00003115 /*
3116 * Workaround for Silicon errata. Use clear-by-write instead
3117 * of clear-by-read. Reading with EICS will return the
3118 * interrupt causes without clearing, which later be done
3119 * with the write to EICR.
3120 */
3121 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
Jacob Kellerd87d8302013-03-02 07:51:42 +00003122
3123 /* The lower 16bits of the EICR register are for the queue interrupts
Joe Perchesdbedd442015-03-06 20:49:12 -08003124 * which should be masked here in order to not accidentally clear them if
Jacob Kellerd87d8302013-03-02 07:51:42 +00003125 * the bits are high when ixgbe_msix_other is called. There is a race
3126 * condition otherwise which results in possible performance loss
3127 * especially if the ixgbe_msix_other interrupt is triggering
3128 * consistently (as it would when PPS is turned on for the X540 device)
3129 */
3130 eicr &= 0xFFFF0000;
3131
Alexander Duyck2c4af692011-07-15 07:29:55 +00003132 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
Alexander Duyck91281fd2009-06-04 16:00:27 +00003133
Alexander Duyck2c4af692011-07-15 07:29:55 +00003134 if (eicr & IXGBE_EICR_LSC)
3135 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003136
Alexander Duyck2c4af692011-07-15 07:29:55 +00003137 if (eicr & IXGBE_EICR_MAILBOX)
3138 ixgbe_msg_task(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003139
Alexander Duyck2c4af692011-07-15 07:29:55 +00003140 switch (hw->mac.type) {
3141 case ixgbe_mac_82599EB:
3142 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003143 case ixgbe_mac_X550:
3144 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003145 case ixgbe_mac_x550em_a:
Don Skidmore597f22d2015-06-09 16:52:02 -07003146 if (hw->phy.type == ixgbe_phy_x550em_ext_t &&
3147 (eicr & IXGBE_EICR_GPI_SDP0_X540)) {
3148 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT;
3149 ixgbe_service_event_schedule(adapter);
3150 IXGBE_WRITE_REG(hw, IXGBE_EICR,
3151 IXGBE_EICR_GPI_SDP0_X540);
3152 }
Don Skidmored773ce22014-02-25 17:58:53 -08003153 if (eicr & IXGBE_EICR_ECC) {
3154 e_info(link, "Received ECC Err, initiating reset\n");
Emil Tantilov57ca2a42016-07-29 14:46:31 -07003155 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
Don Skidmored773ce22014-02-25 17:58:53 -08003156 ixgbe_service_event_schedule(adapter);
3157 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
3158 }
Alexander Duyck2c4af692011-07-15 07:29:55 +00003159 /* Handle Flow Director Full threshold interrupt */
3160 if (eicr & IXGBE_EICR_FLOW_DIR) {
3161 int reinit_count = 0;
3162 int i;
3163 for (i = 0; i < adapter->num_tx_queues; i++) {
3164 struct ixgbe_ring *ring = adapter->tx_ring[i];
3165 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
3166 &ring->state))
3167 reinit_count++;
3168 }
3169 if (reinit_count) {
3170 /* no more flow director interrupts until after init */
3171 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
3172 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
3173 ixgbe_service_event_schedule(adapter);
3174 }
3175 }
3176 ixgbe_check_sfp_event(adapter, eicr);
Jacob Keller4f51bf72011-08-20 04:49:45 +00003177 ixgbe_check_overtemp_event(adapter, eicr);
Alexander Duyck2c4af692011-07-15 07:29:55 +00003178 break;
3179 default:
3180 break;
Auke Kok9a799d72007-09-15 14:07:45 -07003181 }
3182
Alexander Duyck2c4af692011-07-15 07:29:55 +00003183 ixgbe_check_fan_failure(adapter, eicr);
Jacob Kellerdb0677f2012-08-24 07:46:54 +00003184
Jacob Kellerdb0677f2012-08-24 07:46:54 +00003185 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
Mark Rustada9763f32015-10-27 09:58:07 -07003186 ixgbe_ptp_check_pps_event(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003187
Alexander Duyck2c4af692011-07-15 07:29:55 +00003188 /* re-enable the original interrupt state, no lsc, no queues */
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00003189 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyck2c4af692011-07-15 07:29:55 +00003190 ixgbe_irq_enable(adapter, false, false);
Alexander Duyck91281fd2009-06-04 16:00:27 +00003191
Alexander Duyck2c4af692011-07-15 07:29:55 +00003192 return IRQ_HANDLED;
3193}
3194
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00003195static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data)
Auke Kok9a799d72007-09-15 14:07:45 -07003196{
3197 struct ixgbe_q_vector *q_vector = data;
3198
Auke Kok9a799d72007-09-15 14:07:45 -07003199 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00003200
3201 if (q_vector->rx.ring || q_vector->tx.ring)
Alexander Duyckef2662b2015-09-29 15:19:43 -07003202 napi_schedule_irqoff(&q_vector->napi);
Auke Kok9a799d72007-09-15 14:07:45 -07003203
3204 return IRQ_HANDLED;
Alexander Duyck91281fd2009-06-04 16:00:27 +00003205}
3206
Auke Kok9a799d72007-09-15 14:07:45 -07003207/**
Alexander Duyckeb01b972012-02-08 07:51:27 +00003208 * ixgbe_poll - NAPI Rx polling callback
3209 * @napi: structure for representing this polling device
3210 * @budget: how many packets driver is allowed to clean
3211 *
3212 * This function is used for legacy and MSI, NAPI mode
3213 **/
Jeff Kirsher8af3c332012-02-18 07:08:14 +00003214int ixgbe_poll(struct napi_struct *napi, int budget)
Alexander Duyckeb01b972012-02-08 07:51:27 +00003215{
3216 struct ixgbe_q_vector *q_vector =
3217 container_of(napi, struct ixgbe_q_vector, napi);
3218 struct ixgbe_adapter *adapter = q_vector->adapter;
3219 struct ixgbe_ring *ring;
Jesse Brandeburg32b3e082015-09-24 16:35:47 -07003220 int per_ring_budget, work_done = 0;
Alexander Duyckeb01b972012-02-08 07:51:27 +00003221 bool clean_complete = true;
3222
3223#ifdef CONFIG_IXGBE_DCA
3224 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
3225 ixgbe_update_dca(q_vector);
3226#endif
3227
Alexander Duyck8220bbc2016-03-07 09:30:09 -08003228 ixgbe_for_each_ring(ring, q_vector->tx) {
3229 if (!ixgbe_clean_tx_irq(q_vector, ring, budget))
3230 clean_complete = false;
3231 }
Alexander Duyckeb01b972012-02-08 07:51:27 +00003232
Eric Dumazet3ffc1af2017-02-02 16:26:39 -08003233 /* Exit if we are called by netpoll */
3234 if (budget <= 0)
Eliezer Tamir5a85e732013-06-10 11:40:20 +03003235 return budget;
3236
Alexander Duyckeb01b972012-02-08 07:51:27 +00003237 /* attempt to distribute budget to each queue fairly, but don't allow
3238 * the budget to go below 1 because we'll exit polling */
3239 if (q_vector->rx.count > 1)
3240 per_ring_budget = max(budget/q_vector->rx.count, 1);
3241 else
3242 per_ring_budget = budget;
3243
Jesse Brandeburg32b3e082015-09-24 16:35:47 -07003244 ixgbe_for_each_ring(ring, q_vector->rx) {
3245 int cleaned = ixgbe_clean_rx_irq(q_vector, ring,
3246 per_ring_budget);
3247
3248 work_done += cleaned;
Alexander Duyck8220bbc2016-03-07 09:30:09 -08003249 if (cleaned >= per_ring_budget)
3250 clean_complete = false;
Jesse Brandeburg32b3e082015-09-24 16:35:47 -07003251 }
Alexander Duyckeb01b972012-02-08 07:51:27 +00003252
3253 /* If all work not completed, return budget and keep polling */
3254 if (!clean_complete)
3255 return budget;
3256
3257 /* all work done, exit the polling mode */
Jesse Brandeburg32b3e082015-09-24 16:35:47 -07003258 napi_complete_done(napi, work_done);
Alexander Duyckeb01b972012-02-08 07:51:27 +00003259 if (adapter->rx_itr_setting & 1)
3260 ixgbe_set_itr(q_vector);
3261 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Jacob Kellerb4f47a42016-04-13 16:08:22 -07003262 ixgbe_irq_enable_queues(adapter, BIT_ULL(q_vector->v_idx));
Alexander Duyckeb01b972012-02-08 07:51:27 +00003263
Paolo Abeni4b732cd2016-06-15 15:37:59 +02003264 return min(work_done, budget - 1);
Alexander Duyckeb01b972012-02-08 07:51:27 +00003265}
3266
3267/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003268 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
3269 * @adapter: board private structure
3270 *
3271 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
3272 * interrupts from the kernel.
3273 **/
3274static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
3275{
3276 struct net_device *netdev = adapter->netdev;
Tony Nguyene61e4c82017-05-12 11:38:07 -07003277 unsigned int ri = 0, ti = 0;
Alexander Duyck207867f2011-07-15 03:05:37 +00003278 int vector, err;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003279
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003280 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
Alexander Duyckd0759eb2010-11-16 19:27:09 -08003281 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
Alexander Duyck207867f2011-07-15 03:05:37 +00003282 struct msix_entry *entry = &adapter->msix_entries[vector];
Robert Olssoncb13fc22008-11-25 16:43:52 -08003283
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00003284 if (q_vector->tx.ring && q_vector->rx.ring) {
Tony Nguyene61e4c82017-05-12 11:38:07 -07003285 snprintf(q_vector->name, sizeof(q_vector->name),
3286 "%s-TxRx-%u", netdev->name, ri++);
Alexander Duyck32aa77a2010-11-16 19:26:59 -08003287 ti++;
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00003288 } else if (q_vector->rx.ring) {
Tony Nguyene61e4c82017-05-12 11:38:07 -07003289 snprintf(q_vector->name, sizeof(q_vector->name),
3290 "%s-rx-%u", netdev->name, ri++);
Alexander Duyck4ff7fb12011-08-31 00:01:11 +00003291 } else if (q_vector->tx.ring) {
Tony Nguyene61e4c82017-05-12 11:38:07 -07003292 snprintf(q_vector->name, sizeof(q_vector->name),
3293 "%s-tx-%u", netdev->name, ti++);
Alexander Duyckd0759eb2010-11-16 19:27:09 -08003294 } else {
3295 /* skip this unused q_vector */
3296 continue;
Alexander Duyck32aa77a2010-11-16 19:26:59 -08003297 }
Alexander Duyck207867f2011-07-15 03:05:37 +00003298 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0,
3299 q_vector->name, q_vector);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003300 if (err) {
Emil Tantilov396e7992010-07-01 20:05:12 +00003301 e_err(probe, "request_irq failed for MSIX interrupt "
Emil Tantilov849c4542010-06-03 16:53:41 +00003302 "Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003303 goto free_queue_irqs;
3304 }
Alexander Duyck207867f2011-07-15 03:05:37 +00003305 /* If Flow Director is enabled, set interrupt affinity */
3306 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3307 /* assign the mask for this irq */
3308 irq_set_affinity_hint(entry->vector,
Alexander Duyckde88eee2012-02-08 07:49:59 +00003309 &q_vector->affinity_mask);
Alexander Duyck207867f2011-07-15 03:05:37 +00003310 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003311 }
3312
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003313 err = request_irq(adapter->msix_entries[vector].vector,
Alexander Duyck2c4af692011-07-15 07:29:55 +00003314 ixgbe_msix_other, 0, netdev->name, adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003315 if (err) {
Alexander Duyckde88eee2012-02-08 07:49:59 +00003316 e_err(probe, "request_irq for msix_other failed: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003317 goto free_queue_irqs;
3318 }
3319
3320 return 0;
3321
3322free_queue_irqs:
Alexander Duyck207867f2011-07-15 03:05:37 +00003323 while (vector) {
3324 vector--;
3325 irq_set_affinity_hint(adapter->msix_entries[vector].vector,
3326 NULL);
3327 free_irq(adapter->msix_entries[vector].vector,
3328 adapter->q_vector[vector]);
3329 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003330 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
3331 pci_disable_msix(adapter->pdev);
3332 kfree(adapter->msix_entries);
3333 adapter->msix_entries = NULL;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003334 return err;
3335}
3336
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08003337/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003338 * ixgbe_intr - legacy mode Interrupt Handler
Auke Kok9a799d72007-09-15 14:07:45 -07003339 * @irq: interrupt number
3340 * @data: pointer to a network interface device structure
Auke Kok9a799d72007-09-15 14:07:45 -07003341 **/
3342static irqreturn_t ixgbe_intr(int irq, void *data)
3343{
Alexander Duycka65151ba22011-05-27 05:31:32 +00003344 struct ixgbe_adapter *adapter = data;
Auke Kok9a799d72007-09-15 14:07:45 -07003345 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck7a921c92009-05-06 10:43:28 +00003346 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07003347 u32 eicr;
3348
Don Skidmore54037502009-02-21 15:42:56 -08003349 /*
Alexander Duyck24ddd962012-02-10 02:08:32 +00003350 * Workaround for silicon errata #26 on 82598. Mask the interrupt
Don Skidmore54037502009-02-21 15:42:56 -08003351 * before the read of EICR.
3352 */
3353 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
3354
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003355 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
Stephen Hemminger52f33af2011-12-22 16:34:52 +00003356 * therefore no explicit interrupt disable is necessary */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003357 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07003358 if (!eicr) {
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003359 /*
3360 * shared interrupt alert!
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07003361 * make sure interrupts are enabled because the read will
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003362 * have disabled interrupts due to EIAM
3363 * finish the workaround of silicon errata on 82598. Unmask
3364 * the interrupt that we masked before the EICR read.
3365 */
3366 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3367 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07003368 return IRQ_NONE; /* Not our interrupt */
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07003369 }
Auke Kok9a799d72007-09-15 14:07:45 -07003370
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003371 if (eicr & IXGBE_EICR_LSC)
3372 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003373
Alexander Duyckbd508172010-11-16 19:27:03 -08003374 switch (hw->mac.type) {
3375 case ixgbe_mac_82599EB:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003376 ixgbe_check_sfp_event(adapter, eicr);
Don Skidmore0ccb9742011-08-04 02:07:48 +00003377 /* Fall through */
3378 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003379 case ixgbe_mac_X550:
3380 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003381 case ixgbe_mac_x550em_a:
Don Skidmored773ce22014-02-25 17:58:53 -08003382 if (eicr & IXGBE_EICR_ECC) {
3383 e_info(link, "Received ECC Err, initiating reset\n");
Emil Tantilov57ca2a42016-07-29 14:46:31 -07003384 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
Don Skidmored773ce22014-02-25 17:58:53 -08003385 ixgbe_service_event_schedule(adapter);
3386 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
3387 }
Jacob Keller4f51bf72011-08-20 04:49:45 +00003388 ixgbe_check_overtemp_event(adapter, eicr);
Alexander Duyckbd508172010-11-16 19:27:03 -08003389 break;
3390 default:
3391 break;
3392 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003393
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07003394 ixgbe_check_fan_failure(adapter, eicr);
Jacob Kellerdb0677f2012-08-24 07:46:54 +00003395 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
Mark Rustada9763f32015-10-27 09:58:07 -07003396 ixgbe_ptp_check_pps_event(adapter);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07003397
Alexander Duyckb9f6ed22012-02-08 07:49:54 +00003398 /* would disable interrupts here but EIAM disabled it */
Alexander Duyckef2662b2015-09-29 15:19:43 -07003399 napi_schedule_irqoff(&q_vector->napi);
Auke Kok9a799d72007-09-15 14:07:45 -07003400
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003401 /*
3402 * re-enable link(maybe) and non-queue interrupts, no flush.
3403 * ixgbe_poll will re-enable the queue interrupts
3404 */
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003405 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3406 ixgbe_irq_enable(adapter, false, false);
3407
Auke Kok9a799d72007-09-15 14:07:45 -07003408 return IRQ_HANDLED;
3409}
3410
3411/**
3412 * ixgbe_request_irq - initialize interrupts
3413 * @adapter: board private structure
3414 *
3415 * Attempts to configure interrupts using the best available
3416 * capabilities of the hardware and kernel.
3417 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003418static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07003419{
3420 struct net_device *netdev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003421 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07003422
Alexander Duyck4cc6df22011-07-15 03:05:51 +00003423 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003424 err = ixgbe_request_msix_irqs(adapter);
Alexander Duyck4cc6df22011-07-15 03:05:51 +00003425 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED)
Joe Perchesa0607fd2009-11-18 23:29:17 -08003426 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
Alexander Duycka65151ba22011-05-27 05:31:32 +00003427 netdev->name, adapter);
Alexander Duyck4cc6df22011-07-15 03:05:51 +00003428 else
Joe Perchesa0607fd2009-11-18 23:29:17 -08003429 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
Alexander Duycka65151ba22011-05-27 05:31:32 +00003430 netdev->name, adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003431
Alexander Duyckde88eee2012-02-08 07:49:59 +00003432 if (err)
Emil Tantilov396e7992010-07-01 20:05:12 +00003433 e_err(probe, "request_irq failed, Error %d\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07003434
Auke Kok9a799d72007-09-15 14:07:45 -07003435 return err;
3436}
3437
3438static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
3439{
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003440 int vector;
Auke Kok9a799d72007-09-15 14:07:45 -07003441
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003442 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
Alexander Duycka65151ba22011-05-27 05:31:32 +00003443 free_irq(adapter->pdev->irq, adapter);
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003444 return;
Auke Kok9a799d72007-09-15 14:07:45 -07003445 }
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003446
Mark Rustad1fa71252016-09-28 15:36:38 -07003447 if (!adapter->msix_entries)
3448 return;
3449
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003450 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
3451 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
3452 struct msix_entry *entry = &adapter->msix_entries[vector];
3453
3454 /* free only the irqs that were actually requested */
3455 if (!q_vector->rx.ring && !q_vector->tx.ring)
3456 continue;
3457
3458 /* clear the affinity_mask in the IRQ descriptor */
3459 irq_set_affinity_hint(entry->vector, NULL);
3460
3461 free_irq(entry->vector, q_vector);
3462 }
3463
Babu Moger90c6f872016-06-18 17:40:47 -07003464 free_irq(adapter->msix_entries[vector].vector, adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003465}
3466
3467/**
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00003468 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
3469 * @adapter: board private structure
3470 **/
3471static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
3472{
Alexander Duyckbd508172010-11-16 19:27:03 -08003473 switch (adapter->hw.mac.type) {
3474 case ixgbe_mac_82598EB:
Nelson, Shannon835462f2009-04-27 22:42:54 +00003475 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
Alexander Duyckbd508172010-11-16 19:27:03 -08003476 break;
3477 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08003478 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00003479 case ixgbe_mac_X550:
3480 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07003481 case ixgbe_mac_x550em_a:
Nelson, Shannon835462f2009-04-27 22:42:54 +00003482 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
3483 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00003484 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
Alexander Duyckbd508172010-11-16 19:27:03 -08003485 break;
3486 default:
3487 break;
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00003488 }
3489 IXGBE_WRITE_FLUSH(&adapter->hw);
3490 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00003491 int vector;
3492
3493 for (vector = 0; vector < adapter->num_q_vectors; vector++)
3494 synchronize_irq(adapter->msix_entries[vector].vector);
3495
3496 synchronize_irq(adapter->msix_entries[vector++].vector);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00003497 } else {
3498 synchronize_irq(adapter->pdev->irq);
3499 }
3500}
3501
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00003502/**
Auke Kok9a799d72007-09-15 14:07:45 -07003503 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
Tony Nguyen5ba643c2017-12-04 11:28:30 -08003504 * @adapter: board private structure
Auke Kok9a799d72007-09-15 14:07:45 -07003505 *
3506 **/
3507static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
3508{
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00003509 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07003510
Emil Tantilovd5bf4f62011-08-31 00:01:16 +00003511 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07003512
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003513 ixgbe_set_ivar(adapter, 0, 0, 0);
3514 ixgbe_set_ivar(adapter, 1, 0, 0);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003515
Emil Tantilov396e7992010-07-01 20:05:12 +00003516 e_info(hw, "Legacy interrupt IVAR setup done\n");
Auke Kok9a799d72007-09-15 14:07:45 -07003517}
3518
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003519/**
3520 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
3521 * @adapter: board private structure
3522 * @ring: structure containing ring specific data
3523 *
3524 * Configure the Tx descriptor ring after a reset.
3525 **/
Alexander Duyck84418e32010-08-19 13:40:54 +00003526void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
3527 struct ixgbe_ring *ring)
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003528{
3529 struct ixgbe_hw *hw = &adapter->hw;
3530 u64 tdba = ring->dma;
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003531 int wait_loop = 10;
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003532 u32 txdctl = IXGBE_TXDCTL_ENABLE;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003533 u8 reg_idx = ring->reg_idx;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003534
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003535 /* disable queue to avoid issues while updating state */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003536 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0);
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003537 IXGBE_WRITE_FLUSH(hw);
3538
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003539 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
Joe Perchese8e9f692010-09-07 21:34:53 +00003540 (tdba & DMA_BIT_MASK(32)));
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003541 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
3542 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
3543 ring->count * sizeof(union ixgbe_adv_tx_desc));
3544 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
3545 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
Mark Rustad2a1a0912014-01-14 18:53:15 -08003546 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx);
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003547
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003548 /*
3549 * set WTHRESH to encourage burst writeback, it should not be set
Emil Tantilov67da0972013-01-25 06:19:20 +00003550 * higher than 1 when:
3551 * - ITR is 0 as it could cause false TX hangs
3552 * - ITR is set to > 100k int/sec and BQL is enabled
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003553 *
3554 * In order to avoid issues WTHRESH + PTHRESH should always be equal
3555 * to or less than the number of on chip descriptors, which is
3556 * currently 40.
3557 */
Emil Tantilov67da0972013-01-25 06:19:20 +00003558 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR))
Jacob Kellerb4f47a42016-04-13 16:08:22 -07003559 txdctl |= 1u << 16; /* WTHRESH = 1 */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003560 else
Jacob Kellerb4f47a42016-04-13 16:08:22 -07003561 txdctl |= 8u << 16; /* WTHRESH = 8 */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003562
Alexander Duycke954b372012-02-08 07:49:38 +00003563 /*
3564 * Setting PTHRESH to 32 both improves performance
3565 * and avoids a TX hang with DFP enabled
3566 */
Jacob Kellerb4f47a42016-04-13 16:08:22 -07003567 txdctl |= (1u << 8) | /* HTHRESH = 1 */
Alexander Duyckb88c6de2011-07-15 03:06:12 +00003568 32; /* PTHRESH = 32 */
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003569
3570 /* reinitialize flowdirector state */
Alexander Duyck39cb6812012-06-06 05:38:20 +00003571 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
Alexander Duyckee9e0f02010-11-16 19:27:01 -08003572 ring->atr_sample_rate = adapter->atr_sample_rate;
3573 ring->atr_count = 0;
3574 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
3575 } else {
3576 ring->atr_sample_rate = 0;
3577 }
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003578
Alexander Duyckfd786b72013-01-12 06:33:31 +00003579 /* initialize XPS */
3580 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) {
3581 struct ixgbe_q_vector *q_vector = ring->q_vector;
3582
3583 if (q_vector)
John Fastabend2a47fa42013-11-06 09:54:52 -08003584 netif_set_xps_queue(ring->netdev,
Alexander Duyckfd786b72013-01-12 06:33:31 +00003585 &q_vector->affinity_mask,
3586 ring->queue_index);
3587 }
3588
John Fastabendc84d3242010-11-16 19:27:12 -08003589 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
3590
Alexander Duyckffed21b2017-01-17 08:37:29 -08003591 /* reinitialize tx_buffer_info */
3592 memset(ring->tx_buffer_info, 0,
3593 sizeof(struct ixgbe_tx_buffer) * ring->count);
3594
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003595 /* enable queue */
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003596 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
3597
3598 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3599 if (hw->mac.type == ixgbe_mac_82598EB &&
3600 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3601 return;
3602
3603 /* poll to verify queue is enabled */
3604 do {
Don Skidmore032b4322011-03-18 09:32:53 +00003605 usleep_range(1000, 2000);
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003606 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
3607 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
3608 if (!wait_loop)
Emil Tantilova55defd2016-07-29 10:30:06 -07003609 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx);
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003610}
3611
Alexander Duyck120ff942010-08-19 13:34:50 +00003612static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
3613{
3614 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003615 u32 rttdcs, mtqc;
Alexander Duyck0efbf122017-11-22 10:57:11 -08003616 u8 tcs = adapter->hw_tcs;
Alexander Duyck120ff942010-08-19 13:34:50 +00003617
3618 if (hw->mac.type == ixgbe_mac_82598EB)
3619 return;
3620
3621 /* disable the arbiter while setting MTQC */
3622 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3623 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3624 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3625
3626 /* set transmit pool layout */
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003627 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3628 mtqc = IXGBE_MTQC_VT_ENA;
3629 if (tcs > 4)
3630 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3631 else if (tcs > 1)
3632 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
Alexander Duycke24fcf22016-09-07 20:28:24 -07003633 else if (adapter->ring_feature[RING_F_VMDQ].mask ==
3634 IXGBE_82599_VMDQ_4Q_MASK)
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003635 mtqc |= IXGBE_MTQC_32VF;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003636 else
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003637 mtqc |= IXGBE_MTQC_64VF;
3638 } else {
3639 if (tcs > 4)
3640 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3641 else if (tcs > 1)
3642 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3643 else
3644 mtqc = IXGBE_MTQC_64Q_1PB;
3645 }
John Fastabend8b1c0b22011-05-03 02:26:48 +00003646
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003647 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
John Fastabend8b1c0b22011-05-03 02:26:48 +00003648
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003649 /* Enable Security TX Buffer IFG for multiple pb */
3650 if (tcs) {
3651 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
3652 sectx |= IXGBE_SECTX_DCB;
3653 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx);
Alexander Duyck120ff942010-08-19 13:34:50 +00003654 }
3655
3656 /* re-enable the arbiter */
3657 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3658 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3659}
3660
Auke Kok9a799d72007-09-15 14:07:45 -07003661/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07003662 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07003663 * @adapter: board private structure
3664 *
3665 * Configure the Tx unit of the MAC after a reset.
3666 **/
3667static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
3668{
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003669 struct ixgbe_hw *hw = &adapter->hw;
3670 u32 dmatxctl;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003671 u32 i;
Auke Kok9a799d72007-09-15 14:07:45 -07003672
Alexander Duyck2f1860b2010-08-19 13:39:43 +00003673 ixgbe_setup_mtqc(adapter);
3674
3675 if (hw->mac.type != ixgbe_mac_82598EB) {
3676 /* DMATXCTL.EN must be before Tx queues are enabled */
3677 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3678 dmatxctl |= IXGBE_DMATXCTL_TE;
3679 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3680 }
3681
Auke Kok9a799d72007-09-15 14:07:45 -07003682 /* Setup the HW Tx Head and Tail descriptor pointers */
Alexander Duyck43e69bf2010-08-19 13:35:12 +00003683 for (i = 0; i < adapter->num_tx_queues; i++)
3684 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
John Fastabend33fdc822017-04-24 03:30:18 -07003685 for (i = 0; i < adapter->num_xdp_queues; i++)
3686 ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07003687}
3688
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00003689static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter,
3690 struct ixgbe_ring *ring)
3691{
3692 struct ixgbe_hw *hw = &adapter->hw;
3693 u8 reg_idx = ring->reg_idx;
3694 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3695
3696 srrctl |= IXGBE_SRRCTL_DROP_EN;
3697
3698 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3699}
3700
3701static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter,
3702 struct ixgbe_ring *ring)
3703{
3704 struct ixgbe_hw *hw = &adapter->hw;
3705 u8 reg_idx = ring->reg_idx;
3706 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3707
3708 srrctl &= ~IXGBE_SRRCTL_DROP_EN;
3709
3710 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3711}
3712
3713#ifdef CONFIG_IXGBE_DCB
3714void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3715#else
3716static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3717#endif
3718{
3719 int i;
3720 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
3721
3722 if (adapter->ixgbe_ieee_pfc)
3723 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
3724
3725 /*
3726 * We should set the drop enable bit if:
3727 * SR-IOV is enabled
3728 * or
3729 * Number of Rx queues > 1 and flow control is disabled
3730 *
3731 * This allows us to avoid head of line blocking for security
3732 * and performance reasons.
3733 */
3734 if (adapter->num_vfs || (adapter->num_rx_queues > 1 &&
3735 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) {
3736 for (i = 0; i < adapter->num_rx_queues; i++)
3737 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]);
3738 } else {
3739 for (i = 0; i < adapter->num_rx_queues; i++)
3740 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]);
3741 }
3742}
3743
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003744#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
Auke Kok9a799d72007-09-15 14:07:45 -07003745
Yi Zoua6616b42009-08-06 13:05:23 +00003746static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00003747 struct ixgbe_ring *rx_ring)
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003748{
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003749 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003750 u32 srrctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08003751 u8 reg_idx = rx_ring->reg_idx;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003752
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003753 if (hw->mac.type == ixgbe_mac_82598EB) {
3754 u16 mask = adapter->ring_feature[RING_F_RSS].mask;
3755
3756 /*
3757 * if VMDq is not active we must program one srrctl register
3758 * per RSS queue since we have enabled RDRXCTL.MVMEN
3759 */
3760 reg_idx &= mask;
Alexander Duyckbd508172010-11-16 19:27:03 -08003761 }
3762
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003763 /* configure header buffer length, needed for RSC */
3764 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003765
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003766 /* configure the packet buffer length */
Alexander Duyck2de6aa32017-01-17 08:36:54 -08003767 if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state))
3768 srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
3769 else
3770 srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003771
3772 /* configure descriptor type */
Alexander Duyckf8003262012-03-03 02:35:52 +00003773 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003774
Alexander Duyck45e9baa2012-05-05 05:30:59 +00003775 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07003776}
3777
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003778/**
Jean Sacrena897a2a2015-09-19 05:08:44 -06003779 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003780 * @adapter: device handle
3781 *
3782 * - 82598/82599/X540: 128
3783 * - X550(non-SRIOV mode): 512
3784 * - X550(SRIOV mode): 64
3785 */
Vlad Zolotarov7f276ef2015-03-30 21:18:58 +03003786u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter)
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003787{
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003788 if (adapter->hw.mac.type < ixgbe_mac_X550)
3789 return 128;
3790 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3791 return 64;
3792 else
3793 return 512;
3794}
3795
3796/**
Paolo Abenid3aa9c92016-12-15 15:20:34 +01003797 * ixgbe_store_key - Write the RSS key to HW
3798 * @adapter: device handle
3799 *
3800 * Write the RSS key stored in adapter.rss_key to HW.
3801 */
3802void ixgbe_store_key(struct ixgbe_adapter *adapter)
3803{
3804 struct ixgbe_hw *hw = &adapter->hw;
3805 int i;
3806
3807 for (i = 0; i < 10; i++)
3808 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]);
3809}
3810
3811/**
Tony Nguyen3dfbfc72017-04-13 07:26:05 -07003812 * ixgbe_init_rss_key - Initialize adapter RSS key
3813 * @adapter: device handle
3814 *
3815 * Allocates and initializes the RSS key if it is not allocated.
3816 **/
3817static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter)
3818{
3819 u32 *rss_key;
3820
3821 if (!adapter->rss_key) {
3822 rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL);
3823 if (unlikely(!rss_key))
3824 return -ENOMEM;
3825
3826 netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE);
3827 adapter->rss_key = rss_key;
3828 }
3829
3830 return 0;
3831}
3832
3833/**
Jean Sacrena897a2a2015-09-19 05:08:44 -06003834 * ixgbe_store_reta - Write the RETA table to HW
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003835 * @adapter: device handle
3836 *
3837 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3838 */
Tom Barbette1c7cf072015-06-26 15:40:18 +02003839void ixgbe_store_reta(struct ixgbe_adapter *adapter)
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003840{
3841 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
Alexander Duyck05abb122010-08-19 13:35:41 +00003842 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmored1b849b2014-11-09 06:42:57 +00003843 u32 reta = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003844 u32 indices_multi;
3845 u8 *indir_tbl = adapter->rss_indir_tbl;
John Fastabend86b4db32011-04-26 07:26:19 +00003846
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003847 /* Fill out the redirection table as follows:
3848 * - 82598: 8 bit wide entries containing pair of 4 bit RSS
3849 * indices.
3850 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index
3851 * - X550: 8 bit wide entries containing 6 bit RSS index
3852 */
3853 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
3854 indices_multi = 0x11;
3855 else
3856 indices_multi = 0x1;
3857
3858 /* Write redirection table to HW */
3859 for (i = 0; i < reta_entries; i++) {
3860 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8;
3861 if ((i & 3) == 3) {
3862 if (i < 128)
3863 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
3864 else
3865 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32),
3866 reta);
3867 reta = 0;
3868 }
3869 }
3870}
3871
3872/**
Jean Sacrena897a2a2015-09-19 05:08:44 -06003873 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode)
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003874 * @adapter: device handle
3875 *
3876 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3877 */
3878static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter)
3879{
3880 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3881 struct ixgbe_hw *hw = &adapter->hw;
3882 u32 vfreta = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003883
3884 /* Write redirection table to HW */
3885 for (i = 0; i < reta_entries; i++) {
Alexander Duyck2af62c52017-11-22 10:56:28 -08003886 u16 pool = adapter->num_rx_pools;
3887
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003888 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8;
Alexander Duyck2af62c52017-11-22 10:56:28 -08003889 if ((i & 3) != 3)
3890 continue;
3891
3892 while (pool--)
3893 IXGBE_WRITE_REG(hw,
3894 IXGBE_PFVFRETA(i >> 2, VMDQ_P(pool)),
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003895 vfreta);
Alexander Duyck2af62c52017-11-22 10:56:28 -08003896 vfreta = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003897 }
3898}
3899
3900static void ixgbe_setup_reta(struct ixgbe_adapter *adapter)
3901{
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003902 u32 i, j;
3903 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3904 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
3905
Alexander Duycke24fcf22016-09-07 20:28:24 -07003906 /* Program table for at least 4 queues w/ SR-IOV so that VFs can
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003907 * make full use of any rings they may have. We will use the
3908 * PSRTYPE register to control how many rings we use within the PF.
3909 */
Alexander Duycke24fcf22016-09-07 20:28:24 -07003910 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4))
3911 rss_i = 4;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003912
Alexander Duyck05abb122010-08-19 13:35:41 +00003913 /* Fill out hash function seeds */
Paolo Abenid3aa9c92016-12-15 15:20:34 +01003914 ixgbe_store_key(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003915
Alexander Duyck05abb122010-08-19 13:35:41 +00003916 /* Fill out redirection table */
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003917 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl));
3918
Don Skidmore0f9b2322014-11-18 09:35:08 +00003919 for (i = 0, j = 0; i < reta_entries; i++, j++) {
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003920 if (j == rss_i)
Alexander Duyck05abb122010-08-19 13:35:41 +00003921 j = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003922
3923 adapter->rss_indir_tbl[i] = j;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003924 }
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003925
3926 ixgbe_store_reta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00003927}
3928
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003929static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter)
Don Skidmore0f9b2322014-11-18 09:35:08 +00003930{
3931 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003932 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003933 int i, j;
3934
3935 /* Fill out hash function seeds */
Alexander Duyck2af62c52017-11-22 10:56:28 -08003936 for (i = 0; i < 10; i++) {
3937 u16 pool = adapter->num_rx_pools;
3938
3939 while (pool--)
3940 IXGBE_WRITE_REG(hw,
3941 IXGBE_PFVFRSSRK(i, VMDQ_P(pool)),
3942 *(adapter->rss_key + i));
3943 }
Don Skidmore0f9b2322014-11-18 09:35:08 +00003944
3945 /* Fill out the redirection table */
3946 for (i = 0, j = 0; i < 64; i++, j++) {
3947 if (j == rss_i)
3948 j = 0;
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003949
3950 adapter->rss_indir_tbl[i] = j;
Alexander Duyck05abb122010-08-19 13:35:41 +00003951 }
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03003952
3953 ixgbe_store_vfreta(adapter);
Don Skidmored1b849b2014-11-09 06:42:57 +00003954}
3955
3956static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
3957{
3958 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore0f9b2322014-11-18 09:35:08 +00003959 u32 mrqc = 0, rss_field = 0, vfmrqc = 0;
Don Skidmored1b849b2014-11-09 06:42:57 +00003960 u32 rxcsum;
Alexander Duyck05abb122010-08-19 13:35:41 +00003961
3962 /* Disable indicating checksum in descriptor, enables RSS hash */
3963 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
3964 rxcsum |= IXGBE_RXCSUM_PCSD;
3965 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
3966
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003967 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00003968 if (adapter->ring_feature[RING_F_RSS].mask)
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003969 mrqc = IXGBE_MRQC_RSSEN;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003970 } else {
Alexander Duyck0efbf122017-11-22 10:57:11 -08003971 u8 tcs = adapter->hw_tcs;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003972
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003973 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3974 if (tcs > 4)
3975 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */
3976 else if (tcs > 1)
3977 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */
Alexander Duycke24fcf22016-09-07 20:28:24 -07003978 else if (adapter->ring_feature[RING_F_VMDQ].mask ==
3979 IXGBE_82599_VMDQ_4Q_MASK)
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003980 mrqc = IXGBE_MRQC_VMDQRSS32EN;
3981 else
3982 mrqc = IXGBE_MRQC_VMDQRSS64EN;
Emil Tantilove6b41c82017-04-25 11:31:06 -07003983
3984 /* Enable L3/L4 for Tx Switched packets */
3985 mrqc |= IXGBE_MRQC_L3L4TXSWEN;
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003986 } else {
3987 if (tcs > 4)
3988 mrqc = IXGBE_MRQC_RTRSS8TCEN;
3989 else if (tcs > 1)
John Fastabend8b1c0b22011-05-03 02:26:48 +00003990 mrqc = IXGBE_MRQC_RTRSS4TCEN;
3991 else
Alexander Duyck671c0ad2012-05-18 06:34:02 +00003992 mrqc = IXGBE_MRQC_RSSEN;
John Fastabend8b1c0b22011-05-03 02:26:48 +00003993 }
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003994 }
3995
Alexander Duyck05abb122010-08-19 13:35:41 +00003996 /* Perform hash on these packet types */
Don Skidmored1b849b2014-11-09 06:42:57 +00003997 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 |
3998 IXGBE_MRQC_RSS_FIELD_IPV4_TCP |
3999 IXGBE_MRQC_RSS_FIELD_IPV6 |
4000 IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
Alexander Duyck05abb122010-08-19 13:35:41 +00004001
Alexander Duyckef6afc02012-02-08 07:51:53 +00004002 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP)
Don Skidmored1b849b2014-11-09 06:42:57 +00004003 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
Alexander Duyckef6afc02012-02-08 07:51:53 +00004004 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP)
Don Skidmored1b849b2014-11-09 06:42:57 +00004005 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
Alexander Duyckef6afc02012-02-08 07:51:53 +00004006
Don Skidmore0f9b2322014-11-18 09:35:08 +00004007 if ((hw->mac.type >= ixgbe_mac_X550) &&
4008 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
Alexander Duyck2af62c52017-11-22 10:56:28 -08004009 u16 pool = adapter->num_rx_pools;
Don Skidmore0f9b2322014-11-18 09:35:08 +00004010
4011 /* Enable VF RSS mode */
4012 mrqc |= IXGBE_MRQC_MULTIPLE_RSS;
4013 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
4014
4015 /* Setup RSS through the VF registers */
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03004016 ixgbe_setup_vfreta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00004017 vfmrqc = IXGBE_MRQC_RSSEN;
4018 vfmrqc |= rss_field;
Alexander Duyck2af62c52017-11-22 10:56:28 -08004019
4020 while (pool--)
4021 IXGBE_WRITE_REG(hw,
4022 IXGBE_PFVFMRQC(VMDQ_P(pool)),
4023 vfmrqc);
Don Skidmore0f9b2322014-11-18 09:35:08 +00004024 } else {
Vlad Zolotarovdfaf8912015-03-30 21:18:57 +03004025 ixgbe_setup_reta(adapter);
Don Skidmore0f9b2322014-11-18 09:35:08 +00004026 mrqc |= rss_field;
4027 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
4028 }
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00004029}
4030
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004031/**
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004032 * ixgbe_configure_rscctl - enable RSC for the indicated ring
Tony Nguyen5ba643c2017-12-04 11:28:30 -08004033 * @adapter: address of board private structure
4034 * @ring: structure containing ring specific data
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004035 **/
Don Skidmore082757a2011-07-21 05:55:00 +00004036static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
Alexander Duyck73670962010-08-19 13:38:34 +00004037 struct ixgbe_ring *ring)
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004038{
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004039 struct ixgbe_hw *hw = &adapter->hw;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004040 u32 rscctrl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08004041 u8 reg_idx = ring->reg_idx;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004042
Alexander Duyck7d637bc2010-11-16 19:26:56 -08004043 if (!ring_is_rsc_enabled(ring))
Alexander Duyck73670962010-08-19 13:38:34 +00004044 return;
4045
Alexander Duyck73670962010-08-19 13:38:34 +00004046 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004047 rscctrl |= IXGBE_RSCCTL_RSCEN;
4048 /*
4049 * we must limit the number of descriptors so that the
4050 * total size of max desc * buf_len is not greater
Alexander Duyck642c6802011-11-10 09:09:17 +00004051 * than 65536
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004052 */
Alexander Duyckf8003262012-03-03 02:35:52 +00004053 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
Alexander Duyck73670962010-08-19 13:38:34 +00004054 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00004055}
4056
Alexander Duyck9e10e042010-08-19 13:40:06 +00004057#define IXGBE_MAX_RX_DESC_POLL 10
4058static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
4059 struct ixgbe_ring *ring)
4060{
4061 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck9e10e042010-08-19 13:40:06 +00004062 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
4063 u32 rxdctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08004064 u8 reg_idx = ring->reg_idx;
Alexander Duyck9e10e042010-08-19 13:40:06 +00004065
Mark Rustadb0483c82014-01-14 18:53:17 -08004066 if (ixgbe_removed(hw->hw_addr))
4067 return;
Alexander Duyck9e10e042010-08-19 13:40:06 +00004068 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
4069 if (hw->mac.type == ixgbe_mac_82598EB &&
4070 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
4071 return;
4072
4073 do {
Don Skidmore032b4322011-03-18 09:32:53 +00004074 usleep_range(1000, 2000);
Alexander Duyck9e10e042010-08-19 13:40:06 +00004075 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
4076 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4077
4078 if (!wait_loop) {
4079 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
4080 "the polling period\n", reg_idx);
4081 }
4082}
4083
Yi Zou2d39d572011-01-06 14:29:56 +00004084void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
4085 struct ixgbe_ring *ring)
4086{
4087 struct ixgbe_hw *hw = &adapter->hw;
4088 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
4089 u32 rxdctl;
4090 u8 reg_idx = ring->reg_idx;
4091
Mark Rustadb0483c82014-01-14 18:53:17 -08004092 if (ixgbe_removed(hw->hw_addr))
4093 return;
Yi Zou2d39d572011-01-06 14:29:56 +00004094 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
4095 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
4096
4097 /* write value back with RXDCTL.ENABLE bit cleared */
4098 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
4099
4100 if (hw->mac.type == ixgbe_mac_82598EB &&
4101 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
4102 return;
4103
4104 /* the hardware may take up to 100us to really disable the rx queue */
4105 do {
4106 udelay(10);
4107 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
4108 } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
4109
4110 if (!wait_loop) {
4111 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
4112 "the polling period\n", reg_idx);
4113 }
4114}
4115
Alexander Duyck84418e32010-08-19 13:40:54 +00004116void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
4117 struct ixgbe_ring *ring)
Alexander Duyckacd37172010-08-19 13:36:05 +00004118{
4119 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckc3630cc2017-01-17 08:36:28 -08004120 union ixgbe_adv_rx_desc *rx_desc;
Alexander Duyckacd37172010-08-19 13:36:05 +00004121 u64 rdba = ring->dma;
Alexander Duyck9e10e042010-08-19 13:40:06 +00004122 u32 rxdctl;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08004123 u8 reg_idx = ring->reg_idx;
Alexander Duyckacd37172010-08-19 13:36:05 +00004124
Alexander Duyck9e10e042010-08-19 13:40:06 +00004125 /* disable queue to avoid issues while updating state */
4126 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
Yi Zou2d39d572011-01-06 14:29:56 +00004127 ixgbe_disable_rx_queue(adapter, ring);
Alexander Duyck9e10e042010-08-19 13:40:06 +00004128
Alexander Duyckacd37172010-08-19 13:36:05 +00004129 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
4130 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
4131 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
4132 ring->count * sizeof(union ixgbe_adv_rx_desc));
Neerav Parikh8b754512015-12-08 22:13:58 -08004133 /* Force flushing of IXGBE_RDLEN to prevent MDD */
4134 IXGBE_WRITE_FLUSH(hw);
4135
Alexander Duyckacd37172010-08-19 13:36:05 +00004136 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
4137 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
Mark Rustad2a1a0912014-01-14 18:53:15 -08004138 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx);
Alexander Duyck9e10e042010-08-19 13:40:06 +00004139
4140 ixgbe_configure_srrctl(adapter, ring);
4141 ixgbe_configure_rscctl(adapter, ring);
4142
4143 if (hw->mac.type == ixgbe_mac_82598EB) {
4144 /*
4145 * enable cache line friendly hardware writes:
4146 * PTHRESH=32 descriptors (half the internal cache),
4147 * this also removes ugly rx_no_buffer_count increment
4148 * HTHRESH=4 descriptors (to minimize latency on fetch)
4149 * WTHRESH=8 burst writeback up to two cache lines
4150 */
4151 rxdctl &= ~0x3FFFFF;
4152 rxdctl |= 0x080420;
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004153#if (PAGE_SIZE < 8192)
Emil Tantilov2bafa8f2018-01-12 14:02:56 -08004154 /* RXDCTL.RLPML does not work on 82599 */
4155 } else if (hw->mac.type != ixgbe_mac_82599EB) {
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004156 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK |
4157 IXGBE_RXDCTL_RLPML_EN);
4158
Emil Tantilov2bafa8f2018-01-12 14:02:56 -08004159 /* Limit the maximum frame size so we don't overrun the skb.
4160 * This can happen in SRIOV mode when the MTU of the VF is
4161 * higher than the MTU of the PF.
4162 */
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004163 if (ring_uses_build_skb(ring) &&
4164 !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state))
Alexander Duyck541ea692017-03-02 15:01:05 -08004165 rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB |
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004166 IXGBE_RXDCTL_RLPML_EN;
4167#endif
Alexander Duyck9e10e042010-08-19 13:40:06 +00004168 }
4169
Alexander Duyckffed21b2017-01-17 08:37:29 -08004170 /* initialize rx_buffer_info */
4171 memset(ring->rx_buffer_info, 0,
4172 sizeof(struct ixgbe_rx_buffer) * ring->count);
4173
Alexander Duyckc3630cc2017-01-17 08:36:28 -08004174 /* initialize Rx descriptor 0 */
4175 rx_desc = IXGBE_RX_DESC(ring, 0);
4176 rx_desc->wb.upper.length = 0;
4177
Alexander Duyck9e10e042010-08-19 13:40:06 +00004178 /* enable receive descriptor ring */
4179 rxdctl |= IXGBE_RXDCTL_ENABLE;
4180 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
4181
4182 ixgbe_rx_desc_queue_enable(adapter, ring);
Alexander Duyck7d4987d2011-05-27 05:31:37 +00004183 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
Alexander Duyckacd37172010-08-19 13:36:05 +00004184}
4185
Alexander Duyck48654522010-08-19 13:36:27 +00004186static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
4187{
4188 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00004189 int rss_i = adapter->ring_feature[RING_F_RSS].indices;
Alexander Duyck2af62c52017-11-22 10:56:28 -08004190 u16 pool = adapter->num_rx_pools;
Alexander Duyck48654522010-08-19 13:36:27 +00004191
4192 /* PSRTYPE must be initialized in non 82598 adapters */
4193 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00004194 IXGBE_PSRTYPE_UDPHDR |
4195 IXGBE_PSRTYPE_IPV4HDR |
Alexander Duyck48654522010-08-19 13:36:27 +00004196 IXGBE_PSRTYPE_L2HDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00004197 IXGBE_PSRTYPE_IPV6HDR;
Alexander Duyck48654522010-08-19 13:36:27 +00004198
4199 if (hw->mac.type == ixgbe_mac_82598EB)
4200 return;
4201
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00004202 if (rss_i > 3)
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004203 psrtype |= 2u << 29;
Alexander Duyckfbe7ca72012-07-14 05:42:36 +00004204 else if (rss_i > 1)
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004205 psrtype |= 1u << 29;
Alexander Duyck48654522010-08-19 13:36:27 +00004206
Alexander Duyck2af62c52017-11-22 10:56:28 -08004207 while (pool--)
John Fastabend2a47fa42013-11-06 09:54:52 -08004208 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
Alexander Duyck48654522010-08-19 13:36:27 +00004209}
4210
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004211static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
4212{
4213 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004214 u32 reg_offset, vf_shift;
Alexander Duyck435b19f2012-05-18 06:34:08 +00004215 u32 gcr_ext, vmdctl;
Greg Rosede4c7f62011-09-29 05:57:33 +00004216 int i;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004217
4218 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
4219 return;
4220
4221 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
Alexander Duyck435b19f2012-05-18 06:34:08 +00004222 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN;
4223 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00004224 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT;
Alexander Duyck435b19f2012-05-18 06:34:08 +00004225 vmdctl |= IXGBE_VT_CTL_REPLEN;
4226 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004227
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00004228 vf_shift = VMDQ_P(0) % 32;
4229 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0;
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004230
4231 /* Enable only the PF's pool for Tx/Rx */
Emil Tantilov11f2b492016-05-04 15:01:27 -07004232 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift));
Alexander Duyck435b19f2012-05-18 06:34:08 +00004233 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1);
Emil Tantilov11f2b492016-05-04 15:01:27 -07004234 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift));
Alexander Duyck435b19f2012-05-18 06:34:08 +00004235 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1);
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07004236 if (adapter->bridge_mode == BRIDGE_MODE_VEB)
Greg Rose9b735982012-11-08 02:41:35 +00004237 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004238
4239 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00004240 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0));
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004241
Alexander Duyck16369562015-11-02 17:10:13 -08004242 /* clear VLAN promisc flag so VFTA will be updated if necessary */
4243 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC;
4244
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004245 /*
4246 * Set up VF register offsets for selected VT Mode,
4247 * i.e. 32 or 64 VFs for SR-IOV
4248 */
Alexander Duyck73079ea2012-07-14 06:48:49 +00004249 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
4250 case IXGBE_82599_VMDQ_8Q_MASK:
4251 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16;
4252 break;
4253 case IXGBE_82599_VMDQ_4Q_MASK:
4254 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32;
4255 break;
4256 default:
4257 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64;
4258 break;
4259 }
4260
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004261 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
4262
Greg Rosede4c7f62011-09-29 05:57:33 +00004263 for (i = 0; i < adapter->num_vfs; i++) {
Emil Tantilov77f192a2016-03-18 16:11:14 -07004264 /* configure spoof checking */
4265 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i,
4266 adapter->vfinfo[i].spoofchk_enabled);
Vlad Zolotarove65ce0d2015-03-30 21:35:24 +03004267
4268 /* Enable/Disable RSS query feature */
4269 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i,
4270 adapter->vfinfo[i].rss_query_enabled);
Greg Rosede4c7f62011-09-29 05:57:33 +00004271 }
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004272}
4273
Alexander Duyck477de6e2010-08-19 13:38:11 +00004274static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07004275{
Auke Kok9a799d72007-09-15 14:07:45 -07004276 struct ixgbe_hw *hw = &adapter->hw;
4277 struct net_device *netdev = adapter->netdev;
4278 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Alexander Duyck477de6e2010-08-19 13:38:11 +00004279 struct ixgbe_ring *rx_ring;
4280 int i;
4281 u32 mhadd, hlreg0;
Alexander Duyck48654522010-08-19 13:36:27 +00004282
Alexander Duyck477de6e2010-08-19 13:38:11 +00004283#ifdef IXGBE_FCOE
4284 /* adjust max frame to be able to do baby jumbo for FCoE */
4285 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
4286 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
4287 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
4288
4289#endif /* IXGBE_FCOE */
Alexander Duyck872844d2012-08-15 02:10:43 +00004290
4291 /* adjust max frame to be at least the size of a standard frame */
4292 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
4293 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN);
4294
Alexander Duyck477de6e2010-08-19 13:38:11 +00004295 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
4296 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
4297 mhadd &= ~IXGBE_MHADD_MFS_MASK;
4298 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
4299
4300 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
Auke Kok9a799d72007-09-15 14:07:45 -07004301 }
4302
Auke Kok9a799d72007-09-15 14:07:45 -07004303 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
Alexander Duyck477de6e2010-08-19 13:38:11 +00004304 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
4305 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
Auke Kok9a799d72007-09-15 14:07:45 -07004306 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
4307
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00004308 /*
4309 * Setup the HW Rx Head and Tail Descriptor Pointers and
4310 * the Base and Length of the Rx Descriptor Ring
4311 */
Auke Kok9a799d72007-09-15 14:07:45 -07004312 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004313 rx_ring = adapter->rx_ring[i];
Alexander Duyck4f4542b2017-01-17 08:36:14 -08004314
4315 clear_ring_rsc_enabled(rx_ring);
4316 clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state);
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004317 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state);
Alexander Duyck4f4542b2017-01-17 08:36:14 -08004318
Alexander Duyck7d637bc2010-11-16 19:26:56 -08004319 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
4320 set_ring_rsc_enabled(rx_ring);
Alexander Duyck4f4542b2017-01-17 08:36:14 -08004321
4322 if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state))
4323 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state);
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004324
Alexander Duyck6f429222017-01-17 08:37:13 -08004325 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state);
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004326 if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY)
4327 continue;
4328
4329 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state);
4330
4331#if (PAGE_SIZE < 8192)
4332 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
4333 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state);
4334
Alexander Duyck541ea692017-03-02 15:01:05 -08004335 if (IXGBE_2K_TOO_SMALL_WITH_PADDING ||
4336 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
Alexander Duyck2de6aa32017-01-17 08:36:54 -08004337 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state);
4338#endif
Alexander Duyck477de6e2010-08-19 13:38:11 +00004339 }
Alexander Duyck477de6e2010-08-19 13:38:11 +00004340}
4341
Alexander Duyck73670962010-08-19 13:38:34 +00004342static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
4343{
4344 struct ixgbe_hw *hw = &adapter->hw;
4345 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
4346
4347 switch (hw->mac.type) {
4348 case ixgbe_mac_82598EB:
4349 /*
4350 * For VMDq support of different descriptor types or
4351 * buffer sizes through the use of multiple SRRCTL
4352 * registers, RDRXCTL.MVMEN must be set to 1
4353 *
4354 * also, the manual doesn't mention it clearly but DCA hints
4355 * will only use queue 0's tags unless this bit is set. Side
4356 * effects of setting this bit are only that SRRCTL must be
4357 * fully programmed [0..15]
4358 */
4359 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
4360 break;
Mark Rustad052a1a72015-08-08 16:19:04 -07004361 case ixgbe_mac_X550:
4362 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07004363 case ixgbe_mac_x550em_a:
Mark Rustadf961dda2015-08-08 16:19:09 -07004364 if (adapter->num_vfs)
4365 rdrxctl |= IXGBE_RDRXCTL_PSP;
Tony Nguyen93df9462017-05-31 04:43:47 -07004366 /* fall through */
Alexander Duyck73670962010-08-19 13:38:34 +00004367 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08004368 case ixgbe_mac_X540:
Alexander Duyck73670962010-08-19 13:38:34 +00004369 /* Disable RSC for ACK packets */
4370 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
4371 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
4372 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
4373 /* hardware requires some bits to be set by default */
4374 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
4375 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
4376 break;
4377 default:
4378 /* We should do nothing since we don't know this hardware */
4379 return;
4380 }
4381
4382 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
4383}
4384
Alexander Duyck477de6e2010-08-19 13:38:11 +00004385/**
4386 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
4387 * @adapter: board private structure
4388 *
4389 * Configure the Rx unit of the MAC after a reset.
4390 **/
4391static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
4392{
4393 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck477de6e2010-08-19 13:38:11 +00004394 int i;
Jacob Keller6dcc28b2013-07-17 02:53:23 +00004395 u32 rxctrl, rfctl;
Alexander Duyck477de6e2010-08-19 13:38:11 +00004396
4397 /* disable receives while setting up the descriptors */
Don Skidmore1f9ac572015-03-13 13:54:30 -07004398 hw->mac.ops.disable_rx(hw);
Alexander Duyck477de6e2010-08-19 13:38:11 +00004399
4400 ixgbe_setup_psrtype(adapter);
Alexander Duyck73670962010-08-19 13:38:34 +00004401 ixgbe_setup_rdrxctl(adapter);
Alexander Duyck477de6e2010-08-19 13:38:11 +00004402
Jacob Keller6dcc28b2013-07-17 02:53:23 +00004403 /* RSC Setup */
4404 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
4405 rfctl &= ~IXGBE_RFCTL_RSC_DIS;
4406 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
4407 rfctl |= IXGBE_RFCTL_RSC_DIS;
Emil Tantilova21d0822016-08-10 11:19:23 -07004408
4409 /* disable NFS filtering */
4410 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS);
Jacob Keller6dcc28b2013-07-17 02:53:23 +00004411 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
4412
Alexander Duyck9e10e042010-08-19 13:40:06 +00004413 /* Program registers for the distribution of queues */
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004414 ixgbe_setup_mrqc(adapter);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00004415
Alexander Duyck477de6e2010-08-19 13:38:11 +00004416 /* set_rx_buffer_len must be called before ring initialization */
4417 ixgbe_set_rx_buffer_len(adapter);
4418
4419 /*
4420 * Setup the HW Rx Head and Tail Descriptor Pointers and
4421 * the Base and Length of the Rx Descriptor Ring
4422 */
Alexander Duyck9e10e042010-08-19 13:40:06 +00004423 for (i = 0; i < adapter->num_rx_queues; i++)
4424 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07004425
Don Skidmore1f9ac572015-03-13 13:54:30 -07004426 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
Alexander Duyck9e10e042010-08-19 13:40:06 +00004427 /* disable drop enable for 82598 parts */
4428 if (hw->mac.type == ixgbe_mac_82598EB)
4429 rxctrl |= IXGBE_RXCTRL_DMBYPS;
4430
4431 /* enable all receives */
4432 rxctrl |= IXGBE_RXCTRL_RXEN;
4433 hw->mac.ops.enable_rx_dma(hw, rxctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07004434}
4435
Patrick McHardy80d5c362013-04-19 02:04:28 +00004436static int ixgbe_vlan_rx_add_vid(struct net_device *netdev,
4437 __be16 proto, u16 vid)
Auke Kok9a799d72007-09-15 14:07:45 -07004438{
4439 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004440 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07004441
4442 /* add VID to filter table */
Alexander Duyck18be4fc2016-01-06 22:48:44 -08004443 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4444 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid);
4445
Jesse Grossf62bbb52010-10-20 13:56:10 +00004446 set_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05004447
4448 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07004449}
4450
Alexander Duycke1d0a2a2015-11-02 17:10:19 -08004451static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
4452{
4453 u32 vlvf;
4454 int idx;
4455
4456 /* short cut the special case */
4457 if (vlan == 0)
4458 return 0;
4459
4460 /* Search for the vlan id in the VLVF entries */
4461 for (idx = IXGBE_VLVF_ENTRIES; --idx;) {
4462 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx));
4463 if ((vlvf & VLAN_VID_MASK) == vlan)
4464 break;
4465 }
4466
4467 return idx;
4468}
4469
4470void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid)
4471{
4472 struct ixgbe_hw *hw = &adapter->hw;
4473 u32 bits, word;
4474 int idx;
4475
4476 idx = ixgbe_find_vlvf_entry(hw, vid);
4477 if (!idx)
4478 return;
4479
4480 /* See if any other pools are set for this VLAN filter
4481 * entry other than the PF.
4482 */
4483 word = idx * 2 + (VMDQ_P(0) / 32);
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004484 bits = ~BIT(VMDQ_P(0) % 32);
Alexander Duycke1d0a2a2015-11-02 17:10:19 -08004485 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
4486
4487 /* Disable the filter so this falls into the default pool. */
4488 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) {
4489 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4490 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0);
4491 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0);
4492 }
4493}
4494
Patrick McHardy80d5c362013-04-19 02:04:28 +00004495static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev,
4496 __be16 proto, u16 vid)
Auke Kok9a799d72007-09-15 14:07:45 -07004497{
4498 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004499 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07004500
Auke Kok9a799d72007-09-15 14:07:45 -07004501 /* remove VID from filter table */
Alexander Duyck18be4fc2016-01-06 22:48:44 -08004502 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
Alexander Duycke1d0a2a2015-11-02 17:10:19 -08004503 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true);
4504
Jesse Grossf62bbb52010-10-20 13:56:10 +00004505 clear_bit(vid, adapter->active_vlans);
Jiri Pirko8e586132011-12-08 19:52:37 -05004506
4507 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07004508}
4509
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004510/**
Jesse Grossf62bbb52010-10-20 13:56:10 +00004511 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
4512 * @adapter: driver data
4513 */
4514static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
4515{
4516 struct ixgbe_hw *hw = &adapter->hw;
4517 u32 vlnctrl;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004518 int i, j;
4519
4520 switch (hw->mac.type) {
4521 case ixgbe_mac_82598EB:
Jesse Grossf62bbb52010-10-20 13:56:10 +00004522 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4523 vlnctrl &= ~IXGBE_VLNCTRL_VME;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004524 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4525 break;
4526 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08004527 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00004528 case ixgbe_mac_X550:
4529 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07004530 case ixgbe_mac_x550em_a:
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004531 for (i = 0; i < adapter->num_rx_queues; i++) {
John Fastabend2a47fa42013-11-06 09:54:52 -08004532 struct ixgbe_ring *ring = adapter->rx_ring[i];
4533
Alexander Duyck68ae7422017-11-22 10:56:52 -08004534 if (!netif_is_ixgbe(ring->netdev))
John Fastabend2a47fa42013-11-06 09:54:52 -08004535 continue;
Alexander Duyck68ae7422017-11-22 10:56:52 -08004536
John Fastabend2a47fa42013-11-06 09:54:52 -08004537 j = ring->reg_idx;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004538 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
4539 vlnctrl &= ~IXGBE_RXDCTL_VME;
4540 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
4541 }
4542 break;
4543 default:
4544 break;
4545 }
4546}
4547
4548/**
Jesse Grossf62bbb52010-10-20 13:56:10 +00004549 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004550 * @adapter: driver data
4551 */
Jesse Grossf62bbb52010-10-20 13:56:10 +00004552static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004553{
4554 struct ixgbe_hw *hw = &adapter->hw;
Jesse Grossf62bbb52010-10-20 13:56:10 +00004555 u32 vlnctrl;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004556 int i, j;
4557
4558 switch (hw->mac.type) {
4559 case ixgbe_mac_82598EB:
Jesse Grossf62bbb52010-10-20 13:56:10 +00004560 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4561 vlnctrl |= IXGBE_VLNCTRL_VME;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004562 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4563 break;
4564 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08004565 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00004566 case ixgbe_mac_X550:
4567 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07004568 case ixgbe_mac_x550em_a:
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004569 for (i = 0; i < adapter->num_rx_queues; i++) {
John Fastabend2a47fa42013-11-06 09:54:52 -08004570 struct ixgbe_ring *ring = adapter->rx_ring[i];
4571
Alexander Duyck68ae7422017-11-22 10:56:52 -08004572 if (!netif_is_ixgbe(ring->netdev))
John Fastabend2a47fa42013-11-06 09:54:52 -08004573 continue;
Alexander Duyck68ae7422017-11-22 10:56:52 -08004574
John Fastabend2a47fa42013-11-06 09:54:52 -08004575 j = ring->reg_idx;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07004576 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
4577 vlnctrl |= IXGBE_RXDCTL_VME;
4578 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
4579 }
4580 break;
4581 default:
4582 break;
4583 }
4584}
4585
Alexander Duyck16369562015-11-02 17:10:13 -08004586static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
4587{
4588 struct ixgbe_hw *hw = &adapter->hw;
4589 u32 vlnctrl, i;
4590
Alexander Duyckf60439b2016-08-11 14:51:56 -07004591 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4592
Emil Tantilov691e4122016-08-22 16:17:46 -07004593 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) {
4594 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
4595 vlnctrl |= IXGBE_VLNCTRL_VFE;
4596 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4597 } else {
Alexander Duyckf60439b2016-08-11 14:51:56 -07004598 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
Alexander Duyck16369562015-11-02 17:10:13 -08004599 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4600 return;
4601 }
4602
Emil Tantilov691e4122016-08-22 16:17:46 -07004603 /* Nothing to do for 82598 */
4604 if (hw->mac.type == ixgbe_mac_82598EB)
4605 return;
4606
Alexander Duyck16369562015-11-02 17:10:13 -08004607 /* We are already in VLAN promisc, nothing to do */
4608 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)
4609 return;
4610
4611 /* Set flag so we don't redo unnecessary work */
4612 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC;
4613
4614 /* Add PF to all active pools */
4615 for (i = IXGBE_VLVF_ENTRIES; --i;) {
4616 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32);
4617 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset);
4618
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004619 vlvfb |= BIT(VMDQ_P(0) % 32);
Alexander Duyck16369562015-11-02 17:10:13 -08004620 IXGBE_WRITE_REG(hw, reg_offset, vlvfb);
4621 }
4622
4623 /* Set all bits in the VLAN filter table array */
4624 for (i = hw->mac.vft_size; i--;)
4625 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U);
4626}
4627
4628#define VFTA_BLOCK_SIZE 8
4629static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset)
4630{
4631 struct ixgbe_hw *hw = &adapter->hw;
4632 u32 vfta[VFTA_BLOCK_SIZE] = { 0 };
4633 u32 vid_start = vfta_offset * 32;
4634 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32);
4635 u32 i, vid, word, bits;
4636
4637 for (i = IXGBE_VLVF_ENTRIES; --i;) {
4638 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
4639
4640 /* pull VLAN ID from VLVF */
4641 vid = vlvf & VLAN_VID_MASK;
4642
4643 /* only concern outselves with a certain range */
4644 if (vid < vid_start || vid >= vid_end)
4645 continue;
4646
4647 if (vlvf) {
4648 /* record VLAN ID in VFTA */
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004649 vfta[(vid - vid_start) / 32] |= BIT(vid % 32);
Alexander Duyck16369562015-11-02 17:10:13 -08004650
4651 /* if PF is part of this then continue */
4652 if (test_bit(vid, adapter->active_vlans))
4653 continue;
4654 }
4655
4656 /* remove PF from the pool */
4657 word = i * 2 + VMDQ_P(0) / 32;
Jacob Kellerb4f47a42016-04-13 16:08:22 -07004658 bits = ~BIT(VMDQ_P(0) % 32);
Alexander Duyck16369562015-11-02 17:10:13 -08004659 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
4660 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits);
4661 }
4662
4663 /* extract values from active_vlans and write back to VFTA */
4664 for (i = VFTA_BLOCK_SIZE; i--;) {
4665 vid = (vfta_offset + i) * 32;
4666 word = vid / BITS_PER_LONG;
4667 bits = vid % BITS_PER_LONG;
4668
4669 vfta[i] |= adapter->active_vlans[word] >> bits;
4670
4671 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]);
4672 }
4673}
4674
4675static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter)
4676{
4677 struct ixgbe_hw *hw = &adapter->hw;
4678 u32 vlnctrl, i;
4679
Alexander Duyckf60439b2016-08-11 14:51:56 -07004680 /* Set VLAN filtering to enabled */
4681 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4682 vlnctrl |= IXGBE_VLNCTRL_VFE;
4683 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4684
Emil Tantilov691e4122016-08-22 16:17:46 -07004685 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) ||
4686 hw->mac.type == ixgbe_mac_82598EB)
Alexander Duyck16369562015-11-02 17:10:13 -08004687 return;
Alexander Duyck16369562015-11-02 17:10:13 -08004688
4689 /* We are not in VLAN promisc, nothing to do */
4690 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4691 return;
4692
4693 /* Set flag so we don't redo unnecessary work */
4694 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC;
4695
4696 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE)
4697 ixgbe_scrub_vfta(adapter, i);
4698}
4699
Auke Kok9a799d72007-09-15 14:07:45 -07004700static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
4701{
Alexander Duyck06bb1c32016-01-06 22:48:50 -08004702 u16 vid = 1;
Auke Kok9a799d72007-09-15 14:07:45 -07004703
Patrick McHardy80d5c362013-04-19 02:04:28 +00004704 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
Jesse Grossf62bbb52010-10-20 13:56:10 +00004705
Alexander Duyck06bb1c32016-01-06 22:48:50 -08004706 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID)
Patrick McHardy80d5c362013-04-19 02:04:28 +00004707 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
Auke Kok9a799d72007-09-15 14:07:45 -07004708}
4709
4710/**
Jacob Kellerb335e752014-03-25 07:45:27 +00004711 * ixgbe_write_mc_addr_list - write multicast addresses to MTA
4712 * @netdev: network interface device structure
4713 *
4714 * Writes multicast address list to the MTA hash table.
4715 * Returns: -ENOMEM on failure
4716 * 0 on no addresses written
4717 * X on writing X addresses to MTA
4718 **/
4719static int ixgbe_write_mc_addr_list(struct net_device *netdev)
4720{
4721 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4722 struct ixgbe_hw *hw = &adapter->hw;
4723
4724 if (!netif_running(netdev))
4725 return 0;
4726
4727 if (hw->mac.ops.update_mc_addr_list)
4728 hw->mac.ops.update_mc_addr_list(hw, netdev);
4729 else
4730 return -ENOMEM;
4731
4732#ifdef CONFIG_PCI_IOV
Jacob Keller5d7daa32014-03-29 06:51:25 +00004733 ixgbe_restore_vf_multicasts(adapter);
Jacob Kellerb335e752014-03-25 07:45:27 +00004734#endif
4735
4736 return netdev_mc_count(netdev);
4737}
4738
Jacob Keller5d7daa32014-03-29 06:51:25 +00004739#ifdef CONFIG_PCI_IOV
4740void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter)
4741{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004742 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004743 struct ixgbe_hw *hw = &adapter->hw;
4744 int i;
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004745
4746 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4747 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED;
4748
4749 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
4750 hw->mac.ops.set_rar(hw, i,
4751 mac_table->addr,
4752 mac_table->pool,
Jacob Keller5d7daa32014-03-29 06:51:25 +00004753 IXGBE_RAH_AV);
4754 else
4755 hw->mac.ops.clear_rar(hw, i);
Jacob Keller5d7daa32014-03-29 06:51:25 +00004756 }
4757}
Jacob Keller5d7daa32014-03-29 06:51:25 +00004758
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004759#endif
Jacob Keller5d7daa32014-03-29 06:51:25 +00004760static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter)
4761{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004762 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004763 struct ixgbe_hw *hw = &adapter->hw;
4764 int i;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004765
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004766 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4767 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED))
4768 continue;
4769
4770 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED;
4771
4772 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
4773 hw->mac.ops.set_rar(hw, i,
4774 mac_table->addr,
4775 mac_table->pool,
4776 IXGBE_RAH_AV);
4777 else
4778 hw->mac.ops.clear_rar(hw, i);
Jacob Keller5d7daa32014-03-29 06:51:25 +00004779 }
4780}
4781
4782static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter)
4783{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004784 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004785 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004786 int i;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004787
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004788 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4789 mac_table->state |= IXGBE_MAC_STATE_MODIFIED;
4790 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004791 }
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004792
Jacob Keller5d7daa32014-03-29 06:51:25 +00004793 ixgbe_sync_mac_table(adapter);
4794}
4795
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004796static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool)
Jacob Keller5d7daa32014-03-29 06:51:25 +00004797{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004798 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004799 struct ixgbe_hw *hw = &adapter->hw;
4800 int i, count = 0;
4801
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004802 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4803 /* do not count default RAR as available */
4804 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT)
4805 continue;
4806
4807 /* only count unused and addresses that belong to us */
4808 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) {
4809 if (mac_table->pool != pool)
4810 continue;
4811 }
4812
4813 count++;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004814 }
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004815
Jacob Keller5d7daa32014-03-29 06:51:25 +00004816 return count;
4817}
4818
4819/* this function destroys the first RAR entry */
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004820static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter)
Jacob Keller5d7daa32014-03-29 06:51:25 +00004821{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004822 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004823 struct ixgbe_hw *hw = &adapter->hw;
4824
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004825 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN);
4826 mac_table->pool = VMDQ_P(0);
4827
4828 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE;
4829
4830 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool,
Jacob Keller5d7daa32014-03-29 06:51:25 +00004831 IXGBE_RAH_AV);
4832}
4833
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004834int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter,
4835 const u8 *addr, u16 pool)
Jacob Keller5d7daa32014-03-29 06:51:25 +00004836{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004837 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004838 struct ixgbe_hw *hw = &adapter->hw;
4839 int i;
4840
4841 if (is_zero_ether_addr(addr))
4842 return -EINVAL;
4843
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004844 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4845 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
Jacob Keller5d7daa32014-03-29 06:51:25 +00004846 continue;
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004847
4848 ether_addr_copy(mac_table->addr, addr);
4849 mac_table->pool = pool;
4850
4851 mac_table->state |= IXGBE_MAC_STATE_MODIFIED |
4852 IXGBE_MAC_STATE_IN_USE;
4853
Jacob Keller5d7daa32014-03-29 06:51:25 +00004854 ixgbe_sync_mac_table(adapter);
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004855
Jacob Keller5d7daa32014-03-29 06:51:25 +00004856 return i;
4857 }
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004858
Jacob Keller5d7daa32014-03-29 06:51:25 +00004859 return -ENOMEM;
4860}
4861
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004862int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter,
4863 const u8 *addr, u16 pool)
Jacob Keller5d7daa32014-03-29 06:51:25 +00004864{
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004865 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
Jacob Keller5d7daa32014-03-29 06:51:25 +00004866 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004867 int i;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004868
4869 if (is_zero_ether_addr(addr))
4870 return -EINVAL;
4871
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004872 /* search table for addr, if found clear IN_USE flag and sync */
4873 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4874 /* we can only delete an entry if it is in use */
4875 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE))
4876 continue;
4877 /* we only care about entries that belong to the given pool */
4878 if (mac_table->pool != pool)
4879 continue;
4880 /* we only care about a specific MAC address */
4881 if (!ether_addr_equal(addr, mac_table->addr))
4882 continue;
4883
4884 mac_table->state |= IXGBE_MAC_STATE_MODIFIED;
4885 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE;
4886
4887 ixgbe_sync_mac_table(adapter);
4888
4889 return 0;
Jacob Keller5d7daa32014-03-29 06:51:25 +00004890 }
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004891
Jacob Keller5d7daa32014-03-29 06:51:25 +00004892 return -ENOMEM;
4893}
Tony Nguyen5ba643c2017-12-04 11:28:30 -08004894
Jacob Kellerb335e752014-03-25 07:45:27 +00004895/**
Alexander Duyck28500622010-06-15 09:25:48 +00004896 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
4897 * @netdev: network interface device structure
Tony Nguyen5ba643c2017-12-04 11:28:30 -08004898 * @vfn: pool to associate with unicast addresses
Alexander Duyck28500622010-06-15 09:25:48 +00004899 *
4900 * Writes unicast address list to the RAR table.
4901 * Returns: -ENOMEM on failure/insufficient address space
4902 * 0 on no addresses written
4903 * X on writing X addresses to the RAR table
4904 **/
Jacob Keller5d7daa32014-03-29 06:51:25 +00004905static int ixgbe_write_uc_addr_list(struct net_device *netdev, int vfn)
Alexander Duyck28500622010-06-15 09:25:48 +00004906{
4907 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Alexander Duyck28500622010-06-15 09:25:48 +00004908 int count = 0;
4909
4910 /* return ENOMEM indicating insufficient memory for addresses */
Alexander Duyckc9f53e62015-10-22 16:26:30 -07004911 if (netdev_uc_count(netdev) > ixgbe_available_rars(adapter, vfn))
Alexander Duyck28500622010-06-15 09:25:48 +00004912 return -ENOMEM;
4913
John Fastabend95447462012-05-31 12:42:26 +00004914 if (!netdev_uc_empty(netdev)) {
Alexander Duyck28500622010-06-15 09:25:48 +00004915 struct netdev_hw_addr *ha;
Alexander Duyck28500622010-06-15 09:25:48 +00004916 netdev_for_each_uc_addr(ha, netdev) {
Jacob Keller5d7daa32014-03-29 06:51:25 +00004917 ixgbe_del_mac_filter(adapter, ha->addr, vfn);
4918 ixgbe_add_mac_filter(adapter, ha->addr, vfn);
Alexander Duyck28500622010-06-15 09:25:48 +00004919 count++;
4920 }
4921 }
Alexander Duyck28500622010-06-15 09:25:48 +00004922 return count;
4923}
4924
Alexander Duyck0f079d22015-10-22 16:26:36 -07004925static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr)
4926{
4927 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4928 int ret;
4929
4930 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0));
4931
4932 return min_t(int, ret, 0);
4933}
4934
4935static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr)
4936{
4937 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4938
4939 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0));
4940
4941 return 0;
4942}
4943
Alexander Duyck28500622010-06-15 09:25:48 +00004944/**
Christopher Leech2c5645c2008-08-26 04:27:02 -07004945 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
Auke Kok9a799d72007-09-15 14:07:45 -07004946 * @netdev: network interface device structure
4947 *
Christopher Leech2c5645c2008-08-26 04:27:02 -07004948 * The set_rx_method entry point is called whenever the unicast/multicast
4949 * address list or the network interface flags are updated. This routine is
4950 * responsible for configuring the hardware for proper unicast, multicast and
4951 * promiscuous mode.
Auke Kok9a799d72007-09-15 14:07:45 -07004952 **/
Greg Rose7f870472010-01-09 02:25:29 +00004953void ixgbe_set_rx_mode(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07004954{
4955 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4956 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck28500622010-06-15 09:25:48 +00004957 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
Alexander Duyck0c5a6162016-03-10 10:01:10 -08004958 netdev_features_t features = netdev->features;
Alexander Duyck28500622010-06-15 09:25:48 +00004959 int count;
Auke Kok9a799d72007-09-15 14:07:45 -07004960
4961 /* Check for Promiscuous and All Multicast modes */
Auke Kok9a799d72007-09-15 14:07:45 -07004962 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4963
Alexander Duyckf5dc4422010-08-19 13:36:49 +00004964 /* set all bits that we expect to always be set */
Ben Greear3f2d1c02012-03-08 08:28:41 +00004965 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */
Alexander Duyckf5dc4422010-08-19 13:36:49 +00004966 fctrl |= IXGBE_FCTRL_BAM;
4967 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
4968 fctrl |= IXGBE_FCTRL_PMCF;
4969
Alexander Duyck28500622010-06-15 09:25:48 +00004970 /* clear the bits we are changing the status of */
4971 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Auke Kok9a799d72007-09-15 14:07:45 -07004972 if (netdev->flags & IFF_PROMISC) {
Emil Tantilove433ea12010-05-13 17:33:00 +00004973 hw->addr_ctrl.user_set_promisc = true;
Auke Kok9a799d72007-09-15 14:07:45 -07004974 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Jacob Kellerb335e752014-03-25 07:45:27 +00004975 vmolr |= IXGBE_VMOLR_MPE;
Alexander Duyck0c5a6162016-03-10 10:01:10 -08004976 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
Auke Kok9a799d72007-09-15 14:07:45 -07004977 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07004978 if (netdev->flags & IFF_ALLMULTI) {
4979 fctrl |= IXGBE_FCTRL_MPE;
Alexander Duyck28500622010-06-15 09:25:48 +00004980 vmolr |= IXGBE_VMOLR_MPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07004981 }
Emil Tantilove433ea12010-05-13 17:33:00 +00004982 hw->addr_ctrl.user_set_promisc = false;
John Fastabend9dcb3732012-04-15 06:44:25 +00004983 }
4984
4985 /*
4986 * Write addresses to available RAR registers, if there is not
4987 * sufficient space to store all the addresses then enable
4988 * unicast promiscuous mode
4989 */
Alexander Duyck0f079d22015-10-22 16:26:36 -07004990 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) {
John Fastabend9dcb3732012-04-15 06:44:25 +00004991 fctrl |= IXGBE_FCTRL_UPE;
4992 vmolr |= IXGBE_VMOLR_ROPE;
Alexander Duyck28500622010-06-15 09:25:48 +00004993 }
4994
Emil Tantilovcf789592013-10-26 08:13:20 +00004995 /* Write addresses to the MTA, if the attempt fails
4996 * then we should just turn on promiscuous mode so
4997 * that we can at least receive multicast traffic
4998 */
Jacob Kellerb335e752014-03-25 07:45:27 +00004999 count = ixgbe_write_mc_addr_list(netdev);
5000 if (count < 0) {
5001 fctrl |= IXGBE_FCTRL_MPE;
5002 vmolr |= IXGBE_VMOLR_MPE;
5003 } else if (count) {
5004 vmolr |= IXGBE_VMOLR_ROMPE;
5005 }
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00005006
5007 if (hw->mac.type != ixgbe_mac_82598EB) {
5008 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) &
Alexander Duyck28500622010-06-15 09:25:48 +00005009 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
5010 IXGBE_VMOLR_ROPE);
Alexander Duyck1d9c0bf2012-05-05 05:32:21 +00005011 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr);
Auke Kok9a799d72007-09-15 14:07:45 -07005012 }
5013
Ben Greear3f2d1c02012-03-08 08:28:41 +00005014 /* This is useful for sniffing bad packets. */
Alexander Duyck0c5a6162016-03-10 10:01:10 -08005015 if (features & NETIF_F_RXALL) {
Ben Greear3f2d1c02012-03-08 08:28:41 +00005016 /* UPE and MPE will be handled by normal PROMISC logic
5017 * in e1000e_set_rx_mode */
5018 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */
5019 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */
5020 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */
5021
5022 fctrl &= ~(IXGBE_FCTRL_DPF);
5023 /* NOTE: VLAN filtering is disabled by setting PROMISC */
5024 }
5025
Auke Kok9a799d72007-09-15 14:07:45 -07005026 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
Jesse Grossf62bbb52010-10-20 13:56:10 +00005027
Alexander Duyck0c5a6162016-03-10 10:01:10 -08005028 if (features & NETIF_F_HW_VLAN_CTAG_RX)
Jesse Grossf62bbb52010-10-20 13:56:10 +00005029 ixgbe_vlan_strip_enable(adapter);
5030 else
5031 ixgbe_vlan_strip_disable(adapter);
Alexander Duyck0c5a6162016-03-10 10:01:10 -08005032
5033 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
5034 ixgbe_vlan_promisc_disable(adapter);
5035 else
5036 ixgbe_vlan_promisc_enable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005037}
5038
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005039static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
5040{
5041 int q_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005042
Eric Dumazet3ffc1af2017-02-02 16:26:39 -08005043 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++)
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00005044 napi_enable(&adapter->q_vector[q_idx]->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005045}
5046
5047static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
5048{
5049 int q_idx;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005050
Eric Dumazet3ffc1af2017-02-02 16:26:39 -08005051 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++)
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00005052 napi_disable(&adapter->q_vector[q_idx]->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005053}
5054
Emil Tantilova21d0822016-08-10 11:19:23 -07005055static void ixgbe_clear_udp_tunnel_port(struct ixgbe_adapter *adapter, u32 mask)
Mark Rustad67359c32015-06-15 11:33:25 -07005056{
Emil Tantilova21d0822016-08-10 11:19:23 -07005057 struct ixgbe_hw *hw = &adapter->hw;
5058 u32 vxlanctrl;
5059
5060 if (!(adapter->flags & (IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE |
5061 IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)))
5062 return;
5063
Sabrina Dubrocaa39221c2017-07-03 13:02:55 +02005064 vxlanctrl = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) & ~mask;
Emil Tantilova21d0822016-08-10 11:19:23 -07005065 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, vxlanctrl);
5066
5067 if (mask & IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK)
Mark Rustad67359c32015-06-15 11:33:25 -07005068 adapter->vxlan_port = 0;
Emil Tantilova21d0822016-08-10 11:19:23 -07005069
5070 if (mask & IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK)
5071 adapter->geneve_port = 0;
Mark Rustad67359c32015-06-15 11:33:25 -07005072}
5073
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08005074#ifdef CONFIG_IXGBE_DCB
Ben Hutchings49ce9c22012-07-10 10:56:00 +00005075/**
Alexander Duyck2f90b862008-11-20 20:52:10 -08005076 * ixgbe_configure_dcb - Configure DCB hardware
5077 * @adapter: ixgbe adapter struct
5078 *
5079 * This is called by the driver on open to configure the DCB hardware.
5080 * This is also called by the gennetlink interface when reconfiguring
5081 * the DCB state.
5082 */
5083static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
5084{
5085 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend9806307a2010-10-28 00:59:57 +00005086 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Alexander Duyck2f90b862008-11-20 20:52:10 -08005087
Alexander Duyck67ebd792010-08-19 13:34:04 +00005088 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
5089 if (hw->mac.type == ixgbe_mac_82598EB)
5090 netif_set_gso_max_size(adapter->netdev, 65536);
5091 return;
5092 }
5093
5094 if (hw->mac.type == ixgbe_mac_82598EB)
5095 netif_set_gso_max_size(adapter->netdev, 32768);
5096
John Fastabendb1208182011-10-15 05:00:10 +00005097#ifdef IXGBE_FCOE
5098 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
5099 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
5100#endif
5101
Alexander Duyck01fa7d92010-11-16 19:26:53 -08005102 /* reconfigure the hardware */
John Fastabend6f70f6a2011-04-26 07:26:25 +00005103 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) {
John Fastabendc27931d2011-02-23 05:58:25 +00005104 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
5105 DCB_TX_CONFIG);
5106 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
5107 DCB_RX_CONFIG);
5108 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
John Fastabendb1208182011-10-15 05:00:10 +00005109 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) {
5110 ixgbe_dcb_hw_ets(&adapter->hw,
5111 adapter->ixgbe_ieee_ets,
5112 max_frame);
5113 ixgbe_dcb_hw_pfc_config(&adapter->hw,
5114 adapter->ixgbe_ieee_pfc->pfc_en,
5115 adapter->ixgbe_ieee_ets->prio_tc);
John Fastabendc27931d2011-02-23 05:58:25 +00005116 }
John Fastabend8187cd42011-02-23 05:58:08 +00005117
5118 /* Enable RSS Hash per TC */
5119 if (hw->mac.type != ixgbe_mac_82598EB) {
Alexander Duyck4ae63732012-06-22 06:46:33 +00005120 u32 msb = 0;
5121 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1;
John Fastabend8187cd42011-02-23 05:58:08 +00005122
Alexander Duyckd411a932012-06-30 00:14:01 +00005123 while (rss_i) {
5124 msb++;
5125 rss_i >>= 1;
John Fastabend8187cd42011-02-23 05:58:08 +00005126 }
Alexander Duyckd411a932012-06-30 00:14:01 +00005127
Alexander Duyck4ae63732012-06-22 06:46:33 +00005128 /* write msb to all 8 TCs in one write */
5129 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111);
John Fastabend8187cd42011-02-23 05:58:08 +00005130 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08005131}
John Fastabend9da712d2011-08-23 03:14:22 +00005132#endif
5133
5134/* Additional bittime to account for IXGBE framing */
5135#define IXGBE_ETH_FRAMING 20
5136
Ben Hutchings49ce9c22012-07-10 10:56:00 +00005137/**
John Fastabend9da712d2011-08-23 03:14:22 +00005138 * ixgbe_hpbthresh - calculate high water mark for flow control
5139 *
5140 * @adapter: board private structure to calculate for
Ben Hutchings49ce9c22012-07-10 10:56:00 +00005141 * @pb: packet buffer to calculate
John Fastabend9da712d2011-08-23 03:14:22 +00005142 */
5143static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
5144{
5145 struct ixgbe_hw *hw = &adapter->hw;
5146 struct net_device *dev = adapter->netdev;
5147 int link, tc, kb, marker;
5148 u32 dv_id, rx_pba;
5149
5150 /* Calculate max LAN frame size */
5151 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING;
5152
5153#ifdef IXGBE_FCOE
5154 /* FCoE traffic class uses FCOE jumbo frames */
Alexander Duyck800bd602012-06-02 00:11:02 +00005155 if ((dev->features & NETIF_F_FCOE_MTU) &&
5156 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
5157 (pb == ixgbe_fcoe_get_tc(adapter)))
5158 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -08005159#endif
Jacob Kellere5776622014-04-05 02:35:52 +00005160
John Fastabend9da712d2011-08-23 03:14:22 +00005161 /* Calculate delay value for device */
5162 switch (hw->mac.type) {
5163 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005164 case ixgbe_mac_X550:
5165 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07005166 case ixgbe_mac_x550em_a:
John Fastabend9da712d2011-08-23 03:14:22 +00005167 dv_id = IXGBE_DV_X540(link, tc);
5168 break;
5169 default:
5170 dv_id = IXGBE_DV(link, tc);
5171 break;
5172 }
5173
5174 /* Loopback switch introduces additional latency */
5175 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
5176 dv_id += IXGBE_B2BT(tc);
5177
5178 /* Delay value is calculated in bit times convert to KB */
5179 kb = IXGBE_BT2KB(dv_id);
5180 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10;
5181
5182 marker = rx_pba - kb;
5183
5184 /* It is possible that the packet buffer is not large enough
5185 * to provide required headroom. In this case throw an error
5186 * to user and a do the best we can.
5187 */
5188 if (marker < 0) {
5189 e_warn(drv, "Packet Buffer(%i) can not provide enough"
5190 "headroom to support flow control."
5191 "Decrease MTU or number of traffic classes\n", pb);
5192 marker = tc + 1;
5193 }
5194
5195 return marker;
5196}
5197
Ben Hutchings49ce9c22012-07-10 10:56:00 +00005198/**
John Fastabend9da712d2011-08-23 03:14:22 +00005199 * ixgbe_lpbthresh - calculate low water mark for for flow control
5200 *
5201 * @adapter: board private structure to calculate for
Ben Hutchings49ce9c22012-07-10 10:56:00 +00005202 * @pb: packet buffer to calculate
John Fastabend9da712d2011-08-23 03:14:22 +00005203 */
Jacob Kellere5776622014-04-05 02:35:52 +00005204static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb)
John Fastabend9da712d2011-08-23 03:14:22 +00005205{
5206 struct ixgbe_hw *hw = &adapter->hw;
5207 struct net_device *dev = adapter->netdev;
5208 int tc;
5209 u32 dv_id;
5210
5211 /* Calculate max LAN frame size */
5212 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
5213
Jacob Kellere5776622014-04-05 02:35:52 +00005214#ifdef IXGBE_FCOE
5215 /* FCoE traffic class uses FCOE jumbo frames */
5216 if ((dev->features & NETIF_F_FCOE_MTU) &&
5217 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
5218 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up)))
5219 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
5220#endif
5221
John Fastabend9da712d2011-08-23 03:14:22 +00005222 /* Calculate delay value for device */
5223 switch (hw->mac.type) {
5224 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005225 case ixgbe_mac_X550:
5226 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07005227 case ixgbe_mac_x550em_a:
John Fastabend9da712d2011-08-23 03:14:22 +00005228 dv_id = IXGBE_LOW_DV_X540(tc);
5229 break;
5230 default:
5231 dv_id = IXGBE_LOW_DV(tc);
5232 break;
5233 }
5234
5235 /* Delay value is calculated in bit times convert to KB */
5236 return IXGBE_BT2KB(dv_id);
5237}
5238
5239/*
5240 * ixgbe_pbthresh_setup - calculate and setup high low water marks
5241 */
5242static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter)
5243{
5244 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck0efbf122017-11-22 10:57:11 -08005245 int num_tc = adapter->hw_tcs;
John Fastabend9da712d2011-08-23 03:14:22 +00005246 int i;
5247
5248 if (!num_tc)
5249 num_tc = 1;
5250
John Fastabend9da712d2011-08-23 03:14:22 +00005251 for (i = 0; i < num_tc; i++) {
5252 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i);
Jacob Kellere5776622014-04-05 02:35:52 +00005253 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i);
John Fastabend9da712d2011-08-23 03:14:22 +00005254
5255 /* Low water marks must not be larger than high water marks */
Jacob Kellere5776622014-04-05 02:35:52 +00005256 if (hw->fc.low_water[i] > hw->fc.high_water[i])
5257 hw->fc.low_water[i] = 0;
John Fastabend9da712d2011-08-23 03:14:22 +00005258 }
Jacob Kellere5776622014-04-05 02:35:52 +00005259
5260 for (; i < MAX_TRAFFIC_CLASS; i++)
5261 hw->fc.high_water[i] = 0;
John Fastabend9da712d2011-08-23 03:14:22 +00005262}
John Fastabend80605c652011-05-02 12:34:10 +00005263
5264static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
5265{
John Fastabend80605c652011-05-02 12:34:10 +00005266 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckf7e10272011-07-21 00:40:35 +00005267 int hdrm;
Alexander Duyck0efbf122017-11-22 10:57:11 -08005268 u8 tc = adapter->hw_tcs;
John Fastabend80605c652011-05-02 12:34:10 +00005269
5270 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
5271 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
Alexander Duyckf7e10272011-07-21 00:40:35 +00005272 hdrm = 32 << adapter->fdir_pballoc;
5273 else
5274 hdrm = 0;
John Fastabend80605c652011-05-02 12:34:10 +00005275
Alexander Duyckf7e10272011-07-21 00:40:35 +00005276 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL);
John Fastabend9da712d2011-08-23 03:14:22 +00005277 ixgbe_pbthresh_setup(adapter);
John Fastabend80605c652011-05-02 12:34:10 +00005278}
5279
Alexander Duycke4911d52011-05-11 07:18:52 +00005280static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
5281{
5282 struct ixgbe_hw *hw = &adapter->hw;
Sasha Levinb67bfe02013-02-27 17:06:00 -08005283 struct hlist_node *node2;
Alexander Duycke4911d52011-05-11 07:18:52 +00005284 struct ixgbe_fdir_filter *filter;
5285
5286 spin_lock(&adapter->fdir_perfect_lock);
5287
5288 if (!hlist_empty(&adapter->fdir_filter_list))
5289 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
5290
Sasha Levinb67bfe02013-02-27 17:06:00 -08005291 hlist_for_each_entry_safe(filter, node2,
Alexander Duycke4911d52011-05-11 07:18:52 +00005292 &adapter->fdir_filter_list, fdir_node) {
5293 ixgbe_fdir_write_perfect_filter_82599(hw,
Alexander Duyck1f4d5182011-05-14 01:16:02 +00005294 &filter->filter,
5295 filter->sw_idx,
5296 (filter->action == IXGBE_FDIR_DROP_QUEUE) ?
5297 IXGBE_FDIR_DROP_QUEUE :
5298 adapter->rx_ring[filter->action]->reg_idx);
Alexander Duycke4911d52011-05-11 07:18:52 +00005299 }
5300
5301 spin_unlock(&adapter->fdir_perfect_lock);
5302}
5303
John Fastabend2a47fa42013-11-06 09:54:52 -08005304static void ixgbe_macvlan_set_rx_mode(struct net_device *dev, unsigned int pool,
5305 struct ixgbe_adapter *adapter)
5306{
5307 struct ixgbe_hw *hw = &adapter->hw;
5308 u32 vmolr;
5309
5310 /* No unicast promiscuous support for VMDQ devices. */
5311 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(pool));
5312 vmolr |= (IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
5313
5314 /* clear the affected bit */
5315 vmolr &= ~IXGBE_VMOLR_MPE;
5316
5317 if (dev->flags & IFF_ALLMULTI) {
5318 vmolr |= IXGBE_VMOLR_MPE;
5319 } else {
5320 vmolr |= IXGBE_VMOLR_ROMPE;
5321 hw->mac.ops.update_mc_addr_list(hw, dev);
5322 }
Jacob Keller5d7daa32014-03-29 06:51:25 +00005323 ixgbe_write_uc_addr_list(adapter->netdev, pool);
John Fastabend2a47fa42013-11-06 09:54:52 -08005324 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(pool), vmolr);
5325}
5326
John Fastabend2a47fa42013-11-06 09:54:52 -08005327/**
5328 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
5329 * @rx_ring: ring to free buffers from
5330 **/
5331static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
5332{
Alexander Duyckffed21b2017-01-17 08:37:29 -08005333 u16 i = rx_ring->next_to_clean;
5334 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i];
John Fastabend2a47fa42013-11-06 09:54:52 -08005335
5336 /* Free all the Rx ring sk_buffs */
Alexander Duyckffed21b2017-01-17 08:37:29 -08005337 while (i != rx_ring->next_to_alloc) {
John Fastabend2a47fa42013-11-06 09:54:52 -08005338 if (rx_buffer->skb) {
5339 struct sk_buff *skb = rx_buffer->skb;
Alexander Duyck18cb6522014-11-14 00:56:29 +00005340 if (IXGBE_CB(skb)->page_released)
Alexander Duyckffed21b2017-01-17 08:37:29 -08005341 dma_unmap_page_attrs(rx_ring->dev,
Alexander Duyckf3213d92017-01-17 08:35:54 -08005342 IXGBE_CB(skb)->dma,
5343 ixgbe_rx_pg_size(rx_ring),
5344 DMA_FROM_DEVICE,
5345 IXGBE_RX_DMA_ATTR);
John Fastabend2a47fa42013-11-06 09:54:52 -08005346 dev_kfree_skb(skb);
5347 }
Alexander Duyck18cb6522014-11-14 00:56:29 +00005348
Alexander Duyckf3213d92017-01-17 08:35:54 -08005349 /* Invalidate cache lines that may have been written to by
5350 * device so that we avoid corrupting memory.
5351 */
5352 dma_sync_single_range_for_cpu(rx_ring->dev,
5353 rx_buffer->dma,
5354 rx_buffer->page_offset,
5355 ixgbe_rx_bufsz(rx_ring),
5356 DMA_FROM_DEVICE);
5357
5358 /* free resources associated with mapping */
Alexander Duyckffed21b2017-01-17 08:37:29 -08005359 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma,
Alexander Duyckf3213d92017-01-17 08:35:54 -08005360 ixgbe_rx_pg_size(rx_ring),
5361 DMA_FROM_DEVICE,
5362 IXGBE_RX_DMA_ATTR);
Alexander Duyck1b56cf42017-01-17 08:36:03 -08005363 __page_frag_cache_drain(rx_buffer->page,
5364 rx_buffer->pagecnt_bias);
Alexander Duyck18cb6522014-11-14 00:56:29 +00005365
Alexander Duyckffed21b2017-01-17 08:37:29 -08005366 i++;
5367 rx_buffer++;
5368 if (i == rx_ring->count) {
5369 i = 0;
5370 rx_buffer = rx_ring->rx_buffer_info;
5371 }
John Fastabend2a47fa42013-11-06 09:54:52 -08005372 }
5373
John Fastabend2a47fa42013-11-06 09:54:52 -08005374 rx_ring->next_to_alloc = 0;
5375 rx_ring->next_to_clean = 0;
5376 rx_ring->next_to_use = 0;
5377}
5378
John Fastabend2a47fa42013-11-06 09:54:52 -08005379static int ixgbe_fwd_ring_up(struct net_device *vdev,
5380 struct ixgbe_fwd_adapter *accel)
5381{
5382 struct ixgbe_adapter *adapter = accel->real_adapter;
Alexander Duyck16be45b2017-11-22 10:57:23 -08005383 int i, baseq, err;
John Fastabend2a47fa42013-11-06 09:54:52 -08005384
Alexander Duyck4e039c12017-11-22 10:56:40 -08005385 if (!test_bit(accel->pool, adapter->fwd_bitmask))
John Fastabend2a47fa42013-11-06 09:54:52 -08005386 return 0;
5387
5388 baseq = accel->pool * adapter->num_rx_queues_per_pool;
Alexander Duyck4e039c12017-11-22 10:56:40 -08005389 netdev_dbg(vdev, "pool %i:%i queues %i:%i\n",
John Fastabend2a47fa42013-11-06 09:54:52 -08005390 accel->pool, adapter->num_rx_pools,
Alexander Duyck4e039c12017-11-22 10:56:40 -08005391 baseq, baseq + adapter->num_rx_queues_per_pool);
John Fastabend2a47fa42013-11-06 09:54:52 -08005392
5393 accel->netdev = vdev;
Alexander Duyck16be45b2017-11-22 10:57:23 -08005394 accel->rx_base_queue = baseq;
5395 accel->tx_base_queue = baseq;
John Fastabend2a47fa42013-11-06 09:54:52 -08005396
5397 for (i = 0; i < adapter->num_rx_queues_per_pool; i++)
Alexander Duyck16be45b2017-11-22 10:57:23 -08005398 adapter->rx_ring[baseq + i]->netdev = vdev;
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08005399
5400 /* Guarantee all rings are updated before we update the
5401 * MAC address filter.
5402 */
5403 wmb();
John Fastabend2a47fa42013-11-06 09:54:52 -08005404
Alexander Duyck4a2512c2017-11-22 10:56:59 -08005405 /* ixgbe_add_mac_filter will return an index if it succeeds, so we
5406 * need to only treat it as an error value if it is negative.
5407 */
5408 err = ixgbe_add_mac_filter(adapter, vdev->dev_addr,
5409 VMDQ_P(accel->pool));
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08005410 if (err >= 0) {
5411 ixgbe_macvlan_set_rx_mode(vdev, accel->pool, adapter);
5412 return 0;
5413 }
John Fastabend2a47fa42013-11-06 09:54:52 -08005414
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08005415 for (i = 0; i < adapter->num_rx_queues_per_pool; i++)
5416 adapter->rx_ring[baseq + i]->netdev = NULL;
5417
John Fastabend2a47fa42013-11-06 09:54:52 -08005418 return err;
5419}
5420
David Ahern1cd127f2016-10-17 19:15:48 -07005421static int ixgbe_upper_dev_walk(struct net_device *upper, void *data)
5422{
5423 if (netif_is_macvlan(upper)) {
5424 struct macvlan_dev *dfwd = netdev_priv(upper);
5425 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
5426
5427 if (dfwd->fwd_priv)
5428 ixgbe_fwd_ring_up(upper, vadapter);
5429 }
5430
5431 return 0;
5432}
5433
John Fastabend2a47fa42013-11-06 09:54:52 -08005434static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter)
5435{
David Ahern1cd127f2016-10-17 19:15:48 -07005436 netdev_walk_all_upper_dev_rcu(adapter->netdev,
5437 ixgbe_upper_dev_walk, NULL);
John Fastabend2a47fa42013-11-06 09:54:52 -08005438}
5439
Auke Kok9a799d72007-09-15 14:07:45 -07005440static void ixgbe_configure(struct ixgbe_adapter *adapter)
5441{
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00005442 struct ixgbe_hw *hw = &adapter->hw;
5443
John Fastabend80605c652011-05-02 12:34:10 +00005444 ixgbe_configure_pb(adapter);
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08005445#ifdef CONFIG_IXGBE_DCB
Alexander Duyck67ebd792010-08-19 13:34:04 +00005446 ixgbe_configure_dcb(adapter);
Alexander Duyck2f90b862008-11-20 20:52:10 -08005447#endif
Alexander Duyckb35d4d42012-05-23 05:39:25 +00005448 /*
5449 * We must restore virtualization before VLANs or else
5450 * the VLVF registers will not be populated
5451 */
5452 ixgbe_configure_virtualization(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005453
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00005454 ixgbe_set_rx_mode(adapter->netdev);
Jesse Grossf62bbb52010-10-20 13:56:10 +00005455 ixgbe_restore_vlan(adapter);
Shannon Nelson6d73a152017-12-19 15:59:58 -08005456 ixgbe_ipsec_restore(adapter);
Jesse Grossf62bbb52010-10-20 13:56:10 +00005457
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00005458 switch (hw->mac.type) {
5459 case ixgbe_mac_82599EB:
5460 case ixgbe_mac_X540:
5461 hw->mac.ops.disable_rx_buff(hw);
5462 break;
5463 default:
5464 break;
5465 }
5466
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005467 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00005468 ixgbe_init_fdir_signature_82599(&adapter->hw,
5469 adapter->fdir_pballoc);
Alexander Duycke4911d52011-05-11 07:18:52 +00005470 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
5471 ixgbe_init_fdir_perfect_82599(&adapter->hw,
5472 adapter->fdir_pballoc);
5473 ixgbe_fdir_filter_restore(adapter);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005474 }
Alexander Duyck4c1d7b42011-07-21 00:40:30 +00005475
Atita Shirwaikard2f5e7f2012-02-18 02:58:58 +00005476 switch (hw->mac.type) {
5477 case ixgbe_mac_82599EB:
5478 case ixgbe_mac_X540:
5479 hw->mac.ops.enable_rx_buff(hw);
5480 break;
5481 default:
5482 break;
5483 }
5484
Mark Rustad9de76052015-08-08 16:27:41 -07005485#ifdef CONFIG_IXGBE_DCA
5486 /* configure DCA */
5487 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE)
5488 ixgbe_setup_dca(adapter);
5489#endif /* CONFIG_IXGBE_DCA */
5490
Alexander Duyck7c8ae652012-05-05 05:32:47 +00005491#ifdef IXGBE_FCOE
5492 /* configure FCoE L2 filters, redirection table, and Rx control */
5493 ixgbe_configure_fcoe(adapter);
5494
5495#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -07005496 ixgbe_configure_tx(adapter);
5497 ixgbe_configure_rx(adapter);
John Fastabend2a47fa42013-11-06 09:54:52 -08005498 ixgbe_configure_dfwd(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005499}
5500
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005501/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005502 * ixgbe_sfp_link_config - set up SFP+ link
5503 * @adapter: pointer to private adapter struct
5504 **/
5505static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
5506{
Alexander Duyck70864002011-04-27 09:13:56 +00005507 /*
Stephen Hemminger52f33af2011-12-22 16:34:52 +00005508 * We are assuming the worst case scenario here, and that
Alexander Duyck70864002011-04-27 09:13:56 +00005509 * is that an SFP was inserted/removed after the reset
5510 * but before SFP detection was enabled. As such the best
5511 * solution is to just start searching as soon as we start
5512 */
5513 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
5514 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005515
Alexander Duyck70864002011-04-27 09:13:56 +00005516 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
Mark Rustad58e7cd22015-08-08 16:18:48 -07005517 adapter->sfp_poll_time = 0;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005518}
5519
5520/**
5521 * ixgbe_non_sfp_link_config - set up non-SFP+ link
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005522 * @hw: pointer to private hardware struct
5523 *
5524 * Returns 0 on success, negative on failure
5525 **/
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005526static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005527{
Josh Hay3d292262012-12-15 03:28:19 +00005528 u32 speed;
5529 bool autoneg, link_up = false;
Mark Rustada1e869d2015-04-10 10:36:36 -07005530 int ret = IXGBE_ERR_LINK_SETUP;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005531
5532 if (hw->mac.ops.check_link)
Josh Hay3d292262012-12-15 03:28:19 +00005533 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005534
5535 if (ret)
Mark Rustade90dd262014-07-22 06:51:08 +00005536 return ret;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005537
Josh Hay3d292262012-12-15 03:28:19 +00005538 speed = hw->phy.autoneg_advertised;
5539 if ((!speed) && (hw->mac.ops.get_link_capabilities))
5540 ret = hw->mac.ops.get_link_capabilities(hw, &speed,
5541 &autoneg);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005542 if (ret)
Mark Rustade90dd262014-07-22 06:51:08 +00005543 return ret;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005544
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005545 if (hw->mac.ops.setup_link)
Josh Hayfd0326f2012-12-15 03:28:30 +00005546 ret = hw->mac.ops.setup_link(hw, speed, link_up);
Mark Rustade90dd262014-07-22 06:51:08 +00005547
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08005548 return ret;
5549}
5550
Alexander Duycka34bcff2010-08-19 13:39:20 +00005551static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07005552{
Auke Kok9a799d72007-09-15 14:07:45 -07005553 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00005554 u32 gpie = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005555
Jesse Brandeburg9b471442009-12-03 11:33:54 +00005556 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Alexander Duycka34bcff2010-08-19 13:39:20 +00005557 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
5558 IXGBE_GPIE_OCD;
5559 gpie |= IXGBE_GPIE_EIAME;
Jesse Brandeburg9b471442009-12-03 11:33:54 +00005560 /*
5561 * use EIAM to auto-mask when MSI-X interrupt is asserted
5562 * this saves a register write for every interrupt
5563 */
5564 switch (hw->mac.type) {
5565 case ixgbe_mac_82598EB:
5566 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
5567 break;
Jesse Brandeburg9b471442009-12-03 11:33:54 +00005568 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08005569 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005570 case ixgbe_mac_X550:
5571 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07005572 case ixgbe_mac_x550em_a:
Don Skidmoreb93a2222010-11-16 19:27:17 -08005573 default:
Jesse Brandeburg9b471442009-12-03 11:33:54 +00005574 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
5575 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
5576 break;
5577 }
5578 } else {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005579 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
5580 * specifically only auto mask tx and rx interrupts */
5581 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07005582 }
5583
Alexander Duycka34bcff2010-08-19 13:39:20 +00005584 /* XXX: to interrupt immediately for EICS writes, enable this */
5585 /* gpie |= IXGBE_GPIE_EIMEN; */
5586
5587 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
5588 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
Alexander Duyck73079ea2012-07-14 06:48:49 +00005589
5590 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
5591 case IXGBE_82599_VMDQ_8Q_MASK:
5592 gpie |= IXGBE_GPIE_VTMODE_16;
5593 break;
5594 case IXGBE_82599_VMDQ_4Q_MASK:
5595 gpie |= IXGBE_GPIE_VTMODE_32;
5596 break;
5597 default:
5598 gpie |= IXGBE_GPIE_VTMODE_64;
5599 break;
5600 }
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07005601 }
5602
Alexander Duyck5fdd31f2011-07-21 00:40:45 +00005603 /* Enable Thermal over heat sensor interrupt */
Don Skidmoref3df98e2011-08-17 10:15:21 +00005604 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
5605 switch (adapter->hw.mac.type) {
5606 case ixgbe_mac_82599EB:
Don Skidmore9a900ec2015-06-09 17:15:01 -07005607 gpie |= IXGBE_SDP0_GPIEN_8259X;
Don Skidmoref3df98e2011-08-17 10:15:21 +00005608 break;
Don Skidmoref3df98e2011-08-17 10:15:21 +00005609 default:
5610 break;
5611 }
5612 }
Alexander Duyck5fdd31f2011-07-21 00:40:45 +00005613
Alexander Duycka34bcff2010-08-19 13:39:20 +00005614 /* Enable fan failure interrupt */
5615 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
Don Skidmore9a900ec2015-06-09 17:15:01 -07005616 gpie |= IXGBE_SDP1_GPIEN(hw);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07005617
Don Skidmorea023bbd2015-06-24 16:38:53 -04005618 switch (hw->mac.type) {
5619 case ixgbe_mac_82599EB:
5620 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X;
5621 break;
5622 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07005623 case ixgbe_mac_x550em_a:
Don Skidmorea023bbd2015-06-24 16:38:53 -04005624 gpie |= IXGBE_SDP0_GPIEN_X540;
5625 break;
5626 default:
5627 break;
Don Skidmore2698b202011-04-13 07:01:52 +00005628 }
Alexander Duycka34bcff2010-08-19 13:39:20 +00005629
5630 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
5631}
5632
Alexander Duyckc7ccde02011-07-21 00:40:40 +00005633static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
Alexander Duycka34bcff2010-08-19 13:39:20 +00005634{
5635 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00005636 int err;
Alexander Duycka34bcff2010-08-19 13:39:20 +00005637 u32 ctrl_ext;
5638
5639 ixgbe_get_hw_control(adapter);
5640 ixgbe_setup_gpie(adapter);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005641
Auke Kok9a799d72007-09-15 14:07:45 -07005642 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
5643 ixgbe_configure_msix(adapter);
5644 else
5645 ixgbe_configure_msi_and_legacy(adapter);
5646
Emil Tantilovec74a472012-09-20 03:33:56 +00005647 /* enable the optics for 82599 SFP+ fiber */
5648 if (hw->mac.ops.enable_tx_laser)
Peter Waskiewicz61fac742010-04-27 00:38:15 +00005649 hw->mac.ops.enable_tx_laser(hw);
5650
Don Skidmore961fac82015-06-09 16:09:47 -07005651 if (hw->phy.ops.set_phy_power)
5652 hw->phy.ops.set_phy_power(hw, true);
5653
Peter Zijlstra4e857c52014-03-17 18:06:10 +01005654 smp_mb__before_atomic();
Auke Kok9a799d72007-09-15 14:07:45 -07005655 clear_bit(__IXGBE_DOWN, &adapter->state);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005656 ixgbe_napi_enable_all(adapter);
5657
Alexander Duyck73c4b7c2010-11-16 19:26:57 -08005658 if (ixgbe_is_sfp(hw)) {
5659 ixgbe_sfp_link_config(adapter);
5660 } else {
5661 err = ixgbe_non_sfp_link_config(hw);
5662 if (err)
5663 e_err(probe, "link_config FAILED %d\n", err);
5664 }
5665
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005666 /* clear any pending interrupts, may auto mask */
5667 IXGBE_READ_REG(hw, IXGBE_EICR);
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00005668 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07005669
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005670 /*
Don Skidmorebf069c92009-05-07 10:39:54 +00005671 * If this adapter has a fan, check to see if we had a failure
5672 * before we enabled the interrupt.
5673 */
5674 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
5675 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
5676 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +00005677 e_crit(drv, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +00005678 }
5679
Auke Kok9a799d72007-09-15 14:07:45 -07005680 /* bring the link up in the watchdog, this could race with our first
5681 * link up interrupt but shouldn't be a problem */
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005682 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5683 adapter->link_check_timeout = jiffies;
Alexander Duyck70864002011-04-27 09:13:56 +00005684 mod_timer(&adapter->service_timer, jiffies);
Greg Rosec9205692010-01-22 22:46:22 +00005685
5686 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
5687 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
5688 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
5689 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
Auke Kok9a799d72007-09-15 14:07:45 -07005690}
5691
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005692void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
5693{
5694 WARN_ON(in_interrupt());
Alexander Duyck70864002011-04-27 09:13:56 +00005695 /* put off any impending NetWatchDogTimeout */
Florian Westphal860e9532016-05-03 16:33:13 +02005696 netif_trans_update(adapter->netdev);
Alexander Duyck70864002011-04-27 09:13:56 +00005697
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005698 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
Don Skidmore032b4322011-03-18 09:32:53 +00005699 usleep_range(1000, 2000);
Mark Rustadb3eb4e12016-12-14 11:02:16 -08005700 if (adapter->hw.phy.type == ixgbe_phy_fw)
5701 ixgbe_watchdog_link_is_down(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005702 ixgbe_down(adapter);
Greg Rose5809a1a2010-03-24 09:36:08 +00005703 /*
5704 * If SR-IOV enabled then wait a bit before bringing the adapter
5705 * back up to give the VFs time to respond to the reset. The
5706 * two second wait is based upon the watchdog timer cycle in
5707 * the VF driver.
5708 */
5709 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
5710 msleep(2000);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005711 ixgbe_up(adapter);
5712 clear_bit(__IXGBE_RESETTING, &adapter->state);
5713}
5714
Alexander Duyckc7ccde02011-07-21 00:40:40 +00005715void ixgbe_up(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07005716{
5717 /* hardware has been reset, we need to reload some things */
5718 ixgbe_configure(adapter);
5719
Alexander Duyckc7ccde02011-07-21 00:40:40 +00005720 ixgbe_up_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005721}
5722
5723void ixgbe_reset(struct ixgbe_adapter *adapter)
5724{
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07005725 struct ixgbe_hw *hw = &adapter->hw;
Jacob Keller5d7daa32014-03-29 06:51:25 +00005726 struct net_device *netdev = adapter->netdev;
Don Skidmore8ca783a2009-05-26 20:40:47 -07005727 int err;
5728
Mark Rustadb0483c82014-01-14 18:53:17 -08005729 if (ixgbe_removed(hw->hw_addr))
5730 return;
Alexander Duyck70864002011-04-27 09:13:56 +00005731 /* lock SFP init bit to prevent race conditions with the watchdog */
5732 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
5733 usleep_range(1000, 2000);
5734
5735 /* clear all SFP and link config related flags while holding SFP_INIT */
5736 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
5737 IXGBE_FLAG2_SFP_NEEDS_RESET);
5738 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
5739
Don Skidmore8ca783a2009-05-26 20:40:47 -07005740 err = hw->mac.ops.init_hw(hw);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00005741 switch (err) {
5742 case 0:
5743 case IXGBE_ERR_SFP_NOT_PRESENT:
Alexander Duyck70864002011-04-27 09:13:56 +00005744 case IXGBE_ERR_SFP_NOT_SUPPORTED:
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00005745 break;
5746 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
Emil Tantilov849c4542010-06-03 16:53:41 +00005747 e_dev_err("master disable timed out\n");
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00005748 break;
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00005749 case IXGBE_ERR_EEPROM_VERSION:
5750 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +00005751 e_dev_warn("This device is a pre-production adapter/LOM. "
Stephen Hemminger52f33af2011-12-22 16:34:52 +00005752 "Please be aware there may be issues associated with "
Emil Tantilov849c4542010-06-03 16:53:41 +00005753 "your hardware. If you are experiencing problems "
5754 "please contact your Intel or hardware "
5755 "representative who provided you with this "
5756 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00005757 break;
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00005758 default:
Emil Tantilov849c4542010-06-03 16:53:41 +00005759 e_dev_err("Hardware Error: %d\n", err);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00005760 }
Auke Kok9a799d72007-09-15 14:07:45 -07005761
Alexander Duyck70864002011-04-27 09:13:56 +00005762 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
Alexander Duyck0f079d22015-10-22 16:26:36 -07005763
5764 /* flush entries out of MAC table */
Jacob Keller5d7daa32014-03-29 06:51:25 +00005765 ixgbe_flush_sw_mac_table(adapter);
Alexander Duyck0f079d22015-10-22 16:26:36 -07005766 __dev_uc_unsync(netdev, NULL);
5767
5768 /* do not flush user set addresses */
Alexander Duyckc9f53e62015-10-22 16:26:30 -07005769 ixgbe_mac_set_default_filter(adapter);
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00005770
5771 /* update SAN MAC vmdq pool selection */
5772 if (hw->mac.san_mac_rar_index)
5773 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
Jacob Keller1a71ab22012-08-25 03:54:19 +00005774
Jacob Keller8fecf672013-06-21 08:14:32 +00005775 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00005776 ixgbe_ptp_reset(adapter);
Don Skidmore961fac82015-06-09 16:09:47 -07005777
5778 if (hw->phy.ops.set_phy_power) {
5779 if (!netif_running(adapter->netdev) && !adapter->wol)
5780 hw->phy.ops.set_phy_power(hw, false);
5781 else
5782 hw->phy.ops.set_phy_power(hw, true);
5783 }
Auke Kok9a799d72007-09-15 14:07:45 -07005784}
5785
Auke Kok9a799d72007-09-15 14:07:45 -07005786/**
Auke Kok9a799d72007-09-15 14:07:45 -07005787 * ixgbe_clean_tx_ring - Free Tx Buffers
Auke Kok9a799d72007-09-15 14:07:45 -07005788 * @tx_ring: ring to be cleaned
5789 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005790static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005791{
Alexander Duyckffed21b2017-01-17 08:37:29 -08005792 u16 i = tx_ring->next_to_clean;
5793 struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07005794
Alexander Duyckffed21b2017-01-17 08:37:29 -08005795 while (i != tx_ring->next_to_use) {
5796 union ixgbe_adv_tx_desc *eop_desc, *tx_desc;
Auke Kok9a799d72007-09-15 14:07:45 -07005797
Alexander Duyckffed21b2017-01-17 08:37:29 -08005798 /* Free all the Tx ring sk_buffs */
John Fastabend33fdc822017-04-24 03:30:18 -07005799 if (ring_is_xdp(tx_ring))
5800 page_frag_free(tx_buffer->data);
5801 else
5802 dev_kfree_skb_any(tx_buffer->skb);
Alexander Duyckffed21b2017-01-17 08:37:29 -08005803
5804 /* unmap skb header data */
5805 dma_unmap_single(tx_ring->dev,
5806 dma_unmap_addr(tx_buffer, dma),
5807 dma_unmap_len(tx_buffer, len),
5808 DMA_TO_DEVICE);
5809
5810 /* check for eop_desc to determine the end of the packet */
5811 eop_desc = tx_buffer->next_to_watch;
5812 tx_desc = IXGBE_TX_DESC(tx_ring, i);
5813
5814 /* unmap remaining buffers */
5815 while (tx_desc != eop_desc) {
5816 tx_buffer++;
5817 tx_desc++;
5818 i++;
5819 if (unlikely(i == tx_ring->count)) {
5820 i = 0;
5821 tx_buffer = tx_ring->tx_buffer_info;
5822 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
5823 }
5824
5825 /* unmap any remaining paged data */
5826 if (dma_unmap_len(tx_buffer, len))
5827 dma_unmap_page(tx_ring->dev,
5828 dma_unmap_addr(tx_buffer, dma),
5829 dma_unmap_len(tx_buffer, len),
5830 DMA_TO_DEVICE);
5831 }
5832
5833 /* move us one more past the eop_desc for start of next pkt */
5834 tx_buffer++;
5835 i++;
5836 if (unlikely(i == tx_ring->count)) {
5837 i = 0;
5838 tx_buffer = tx_ring->tx_buffer_info;
5839 }
Auke Kok9a799d72007-09-15 14:07:45 -07005840 }
5841
Alexander Duyckffed21b2017-01-17 08:37:29 -08005842 /* reset BQL for queue */
John Fastabend33fdc822017-04-24 03:30:18 -07005843 if (!ring_is_xdp(tx_ring))
5844 netdev_tx_reset_queue(txring_txq(tx_ring));
John Fastabenddad8a3b2012-04-23 12:22:39 +00005845
Alexander Duyckffed21b2017-01-17 08:37:29 -08005846 /* reset next_to_use and next_to_clean */
Auke Kok9a799d72007-09-15 14:07:45 -07005847 tx_ring->next_to_use = 0;
5848 tx_ring->next_to_clean = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005849}
5850
5851/**
Auke Kok9a799d72007-09-15 14:07:45 -07005852 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
5853 * @adapter: board private structure
5854 **/
5855static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
5856{
5857 int i;
5858
5859 for (i = 0; i < adapter->num_rx_queues; i++)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005860 ixgbe_clean_rx_ring(adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005861}
5862
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005863/**
5864 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
5865 * @adapter: board private structure
5866 **/
5867static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
5868{
5869 int i;
5870
5871 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08005872 ixgbe_clean_tx_ring(adapter->tx_ring[i]);
John Fastabend33fdc822017-04-24 03:30:18 -07005873 for (i = 0; i < adapter->num_xdp_queues; i++)
5874 ixgbe_clean_tx_ring(adapter->xdp_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005875}
5876
Alexander Duycke4911d52011-05-11 07:18:52 +00005877static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
5878{
Sasha Levinb67bfe02013-02-27 17:06:00 -08005879 struct hlist_node *node2;
Alexander Duycke4911d52011-05-11 07:18:52 +00005880 struct ixgbe_fdir_filter *filter;
5881
5882 spin_lock(&adapter->fdir_perfect_lock);
5883
Sasha Levinb67bfe02013-02-27 17:06:00 -08005884 hlist_for_each_entry_safe(filter, node2,
Alexander Duycke4911d52011-05-11 07:18:52 +00005885 &adapter->fdir_filter_list, fdir_node) {
5886 hlist_del(&filter->fdir_node);
5887 kfree(filter);
5888 }
5889 adapter->fdir_filter_count = 0;
5890
5891 spin_unlock(&adapter->fdir_perfect_lock);
5892}
5893
Auke Kok9a799d72007-09-15 14:07:45 -07005894void ixgbe_down(struct ixgbe_adapter *adapter)
5895{
5896 struct net_device *netdev = adapter->netdev;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005897 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckbf29ee62010-11-16 19:27:07 -08005898 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07005899
5900 /* signal that we are down to the interrupt handler */
Mark Rustadc3049c82014-01-14 18:53:12 -08005901 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state))
5902 return; /* do nothing if already down */
Auke Kok9a799d72007-09-15 14:07:45 -07005903
5904 /* disable receives */
Don Skidmore1f9ac572015-03-13 13:54:30 -07005905 hw->mac.ops.disable_rx(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07005906
Yi Zou2d39d572011-01-06 14:29:56 +00005907 /* disable all enabled rx queues */
5908 for (i = 0; i < adapter->num_rx_queues; i++)
5909 /* this call also flushes the previous write */
5910 ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
5911
Don Skidmore032b4322011-03-18 09:32:53 +00005912 usleep_range(10000, 20000);
Auke Kok9a799d72007-09-15 14:07:45 -07005913
John Fastabend11393cc2017-07-17 09:29:40 -07005914 /* synchronize_sched() needed for pending XDP buffers to drain */
5915 if (adapter->xdp_ring[0])
5916 synchronize_sched();
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005917 netif_tx_stop_all_queues(netdev);
5918
Alexander Duyck70864002011-04-27 09:13:56 +00005919 /* call carrier off first to avoid false dev_watchdog timeouts */
John Fastabendc0dfb902010-04-27 02:13:39 +00005920 netif_carrier_off(netdev);
5921 netif_tx_disable(netdev);
5922
5923 ixgbe_irq_disable(adapter);
5924
5925 ixgbe_napi_disable_all(adapter);
5926
Emil Tantilov57ca2a42016-07-29 14:46:31 -07005927 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
5928 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
Alexander Duyck70864002011-04-27 09:13:56 +00005929 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
5930
5931 del_timer_sync(&adapter->service_timer);
5932
Don Skidmore0a1f87c2009-09-18 09:45:43 +00005933 if (adapter->num_vfs) {
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00005934 /* Clear EITR Select mapping */
5935 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
5936
5937 /* Mark all the VFs as inactive */
5938 for (i = 0 ; i < adapter->num_vfs; i++)
Rusty Russell3db1cd52011-12-19 13:56:45 +00005939 adapter->vfinfo[i].clear_to_send = false;
Alexander Duyck8e34d1a2011-07-15 07:29:49 +00005940
Don Skidmore0a1f87c2009-09-18 09:45:43 +00005941 /* ping all the active vfs to let them know we are going down */
Auke Kok9a799d72007-09-15 14:07:45 -07005942 ixgbe_ping_all_vfs(adapter);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005943
Auke Kok9a799d72007-09-15 14:07:45 -07005944 /* Disable all VFTE/VFRE TX/RX */
Peter Waskiewiczb25ebfd2010-10-05 01:27:49 +00005945 ixgbe_disable_tx_rx(adapter);
Peter Waskiewiczb25ebfd2010-10-05 01:27:49 +00005946 }
5947
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005948 /* disable transmits in the hardware now that interrupts are off */
5949 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyckbf29ee62010-11-16 19:27:07 -08005950 u8 reg_idx = adapter->tx_ring[i]->reg_idx;
Alexander Duyck34cecbb2011-04-22 04:08:14 +00005951 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005952 }
John Fastabend33fdc822017-04-24 03:30:18 -07005953 for (i = 0; i < adapter->num_xdp_queues; i++) {
5954 u8 reg_idx = adapter->xdp_ring[i]->reg_idx;
5955
5956 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
5957 }
Alexander Duyck34cecbb2011-04-22 04:08:14 +00005958
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005959 /* Disable the Tx DMA engine on 82599 and later MAC */
Alexander Duyckbd508172010-11-16 19:27:03 -08005960 switch (hw->mac.type) {
5961 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08005962 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00005963 case ixgbe_mac_X550:
5964 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07005965 case ixgbe_mac_x550em_a:
PJ Waskiewicz88512532009-03-13 22:15:10 +00005966 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
Joe Perchese8e9f692010-09-07 21:34:53 +00005967 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
5968 ~IXGBE_DMATXCTL_TE));
Alexander Duyckbd508172010-11-16 19:27:03 -08005969 break;
5970 default:
5971 break;
5972 }
Jesse Brandeburg7f821872008-09-11 20:00:16 -07005973
Paul Larson6f4a0e42008-06-24 17:00:56 -07005974 if (!pci_channel_offline(adapter->pdev))
5975 ixgbe_reset(adapter);
Don Skidmorec6ecf392010-12-03 03:31:51 +00005976
Emil Tantilovec74a472012-09-20 03:33:56 +00005977 /* power down the optics for 82599 SFP+ fiber */
5978 if (hw->mac.ops.disable_tx_laser)
Don Skidmorec6ecf392010-12-03 03:31:51 +00005979 hw->mac.ops.disable_tx_laser(hw);
5980
Auke Kok9a799d72007-09-15 14:07:45 -07005981 ixgbe_clean_all_tx_rings(adapter);
5982 ixgbe_clean_all_rx_rings(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005983}
5984
Auke Kok9a799d72007-09-15 14:07:45 -07005985/**
Mark Rustadb3eb4e12016-12-14 11:02:16 -08005986 * ixgbe_eee_capable - helper function to determine EEE support on X550
5987 * @adapter: board private structure
5988 */
5989static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter)
5990{
5991 struct ixgbe_hw *hw = &adapter->hw;
5992
5993 switch (hw->device_id) {
5994 case IXGBE_DEV_ID_X550EM_A_1G_T:
5995 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
5996 if (!hw->phy.eee_speeds_supported)
5997 break;
5998 adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE;
5999 if (!hw->phy.eee_speeds_advertised)
6000 break;
6001 adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED;
6002 break;
6003 default:
6004 adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE;
6005 adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED;
6006 break;
6007 }
6008}
6009
6010/**
Auke Kok9a799d72007-09-15 14:07:45 -07006011 * ixgbe_tx_timeout - Respond to a Tx Hang
6012 * @netdev: network interface device structure
6013 **/
6014static void ixgbe_tx_timeout(struct net_device *netdev)
6015{
6016 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6017
6018 /* Do the reset outside of interrupt context */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00006019 ixgbe_tx_timeout_reset(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006020}
6021
Usha Ketineni88290092016-04-26 05:00:26 -07006022#ifdef CONFIG_IXGBE_DCB
6023static void ixgbe_init_dcb(struct ixgbe_adapter *adapter)
6024{
6025 struct ixgbe_hw *hw = &adapter->hw;
6026 struct tc_configuration *tc;
6027 int j;
6028
6029 switch (hw->mac.type) {
6030 case ixgbe_mac_82598EB:
6031 case ixgbe_mac_82599EB:
6032 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
6033 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
6034 break;
6035 case ixgbe_mac_X540:
6036 case ixgbe_mac_X550:
6037 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS;
6038 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS;
6039 break;
6040 case ixgbe_mac_X550EM_x:
6041 case ixgbe_mac_x550em_a:
6042 default:
6043 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS;
6044 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS;
6045 break;
6046 }
6047
6048 /* Configure DCB traffic classes */
6049 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
6050 tc = &adapter->dcb_cfg.tc_config[j];
6051 tc->path[DCB_TX_CONFIG].bwg_id = 0;
6052 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
6053 tc->path[DCB_RX_CONFIG].bwg_id = 0;
6054 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
6055 tc->dcb_pfc = pfc_disabled;
6056 }
6057
6058 /* Initialize default user to priority mapping, UPx->TC0 */
6059 tc = &adapter->dcb_cfg.tc_config[0];
6060 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF;
6061 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF;
6062
6063 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
6064 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
6065 adapter->dcb_cfg.pfc_mode_enable = false;
6066 adapter->dcb_set_bitmap = 0x00;
6067 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE)
6068 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
6069 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
6070 sizeof(adapter->temp_dcb_cfg));
6071}
6072#endif
6073
Jesse Brandeburg4df10462009-03-13 22:15:31 +00006074/**
Auke Kok9a799d72007-09-15 14:07:45 -07006075 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
6076 * @adapter: board private structure to initialize
Tony Nguyen5ba643c2017-12-04 11:28:30 -08006077 * @ii: pointer to ixgbe_info for device
Auke Kok9a799d72007-09-15 14:07:45 -07006078 *
6079 * ixgbe_sw_init initializes the Adapter private data structure.
6080 * Fields are initialized based on PCI device information and
6081 * OS network device settings (MTU size).
6082 **/
Emil Tantilov55570b62016-10-12 12:34:25 -07006083static int ixgbe_sw_init(struct ixgbe_adapter *adapter,
6084 const struct ixgbe_info *ii)
Auke Kok9a799d72007-09-15 14:07:45 -07006085{
6086 struct ixgbe_hw *hw = &adapter->hw;
6087 struct pci_dev *pdev = adapter->pdev;
Alexander Duyckd3cb9862013-01-16 01:35:35 +00006088 unsigned int rss, fdir;
Jacob Kellercb6d0f52012-12-04 06:03:14 +00006089 u32 fwsm;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04006090 int i;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006091
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006092 /* PCI config space info */
6093
6094 hw->vendor_id = pdev->vendor;
6095 hw->device_id = pdev->device;
6096 hw->revision_id = pdev->revision;
6097 hw->subsystem_vendor_id = pdev->subsystem_vendor;
6098 hw->subsystem_device_id = pdev->subsystem_device;
6099
Emil Tantilov55570b62016-10-12 12:34:25 -07006100 /* get_invariants needs the device IDs */
6101 ii->get_invariants(hw);
6102
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006103 /* Set common capability flags and settings */
Don Skidmore0f9b2322014-11-18 09:35:08 +00006104 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus());
Alexander Duyckc0876632012-05-10 00:01:46 +00006105 adapter->ring_feature[RING_F_RSS].limit = rss;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006106 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006107 adapter->max_q_vectors = MAX_Q_VECTORS_82599;
6108 adapter->atr_sample_rate = 20;
Alexander Duyckd3cb9862013-01-16 01:35:35 +00006109 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus());
6110 adapter->ring_feature[RING_F_FDIR].limit = fdir;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006111 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
Alexander Duycka8e87d92017-11-22 10:57:05 -08006112 adapter->ring_feature[RING_F_VMDQ].limit = 1;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006113#ifdef CONFIG_IXGBE_DCA
6114 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE;
6115#endif
Usha Ketineni88290092016-04-26 05:00:26 -07006116#ifdef CONFIG_IXGBE_DCB
6117 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE;
6118 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
6119#endif
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006120#ifdef IXGBE_FCOE
6121 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
6122 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
6123#ifdef CONFIG_IXGBE_DCB
6124 /* Default traffic class to use for FCoE */
6125 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
6126#endif /* CONFIG_IXGBE_DCB */
6127#endif /* IXGBE_FCOE */
6128
John Fastabendb82b17d2016-02-16 21:18:53 -08006129 /* initialize static ixgbe jump table entries */
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04006130 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]),
6131 GFP_KERNEL);
6132 if (!adapter->jump_tables[0])
6133 return -ENOMEM;
6134 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields;
6135
6136 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++)
6137 adapter->jump_tables[i] = NULL;
John Fastabendb82b17d2016-02-16 21:18:53 -08006138
Jacob Keller5d7daa32014-03-29 06:51:25 +00006139 adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
6140 hw->mac.num_rar_entries,
6141 GFP_ATOMIC);
Alexander Duyck530fd822015-11-02 17:09:29 -08006142 if (!adapter->mac_table)
6143 return -ENOMEM;
Jacob Keller5d7daa32014-03-29 06:51:25 +00006144
Tony Nguyen3dfbfc72017-04-13 07:26:05 -07006145 if (ixgbe_init_rss_key(adapter))
6146 return -ENOMEM;
6147
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006148 /* Set MAC specific capability flags and exceptions */
Alexander Duyckbd508172010-11-16 19:27:03 -08006149 switch (hw->mac.type) {
6150 case ixgbe_mac_82598EB:
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006151 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006152
Don Skidmorebf069c92009-05-07 10:39:54 +00006153 if (hw->device_id == IXGBE_DEV_ID_82598AT)
6154 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006155
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00006156 adapter->max_q_vectors = MAX_Q_VECTORS_82598;
Emil Tantilov8fc3bb62013-01-08 04:23:53 +00006157 adapter->ring_feature[RING_F_FDIR].limit = 0;
6158 adapter->atr_sample_rate = 0;
6159 adapter->fdir_pballoc = 0;
6160#ifdef IXGBE_FCOE
6161 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
6162 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
6163#ifdef CONFIG_IXGBE_DCB
6164 adapter->fcoe.up = 0;
6165#endif /* IXGBE_DCB */
6166#endif /* IXGBE_FCOE */
6167 break;
6168 case ixgbe_mac_82599EB:
6169 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
6170 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Alexander Duyckbd508172010-11-16 19:27:03 -08006171 break;
Don Skidmoreb93a2222010-11-16 19:27:17 -08006172 case ixgbe_mac_X540:
Don Skidmore9a900ec2015-06-09 17:15:01 -07006173 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
Jacob Kellercb6d0f52012-12-04 06:03:14 +00006174 if (fwsm & IXGBE_FWSM_TS_ENABLED)
6175 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Alexander Duyckbd508172010-11-16 19:27:03 -08006176 break;
Mark Rustad49425df2016-04-01 12:18:09 -07006177 case ixgbe_mac_x550em_a:
Emil Tantilova21d0822016-08-10 11:19:23 -07006178 adapter->flags |= IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE;
Mark Rustadb3eb4e12016-12-14 11:02:16 -08006179 switch (hw->device_id) {
6180 case IXGBE_DEV_ID_X550EM_A_1G_T:
6181 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
6182 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
6183 break;
6184 default:
6185 break;
6186 }
Emil Tantilova21d0822016-08-10 11:19:23 -07006187 /* fall through */
6188 case ixgbe_mac_X550EM_x:
Usha Ketineni88290092016-04-26 05:00:26 -07006189#ifdef CONFIG_IXGBE_DCB
6190 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE;
6191#endif
6192#ifdef IXGBE_FCOE
6193 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
6194#ifdef CONFIG_IXGBE_DCB
6195 adapter->fcoe.up = 0;
6196#endif /* IXGBE_DCB */
6197#endif /* IXGBE_FCOE */
6198 /* Fall Through */
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006199 case ixgbe_mac_X550:
Mark Rustadb3eb4e12016-12-14 11:02:16 -08006200 if (hw->mac.type == ixgbe_mac_X550)
6201 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006202#ifdef CONFIG_IXGBE_DCA
6203 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE;
6204#endif
Mark Rustad67359c32015-06-15 11:33:25 -07006205 adapter->flags |= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE;
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006206 break;
Alexander Duyckbd508172010-11-16 19:27:03 -08006207 default:
6208 break;
Alexander Duyckf8212f92009-04-27 22:42:37 +00006209 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08006210
Alexander Duyck7c8ae652012-05-05 05:32:47 +00006211#ifdef IXGBE_FCOE
6212 /* FCoE support exists, always init the FCoE lock */
6213 spin_lock_init(&adapter->fcoe.lock);
6214
6215#endif
Alexander Duyck1fc5f032011-06-02 04:28:39 +00006216 /* n-tuple support exists, always init our spinlock */
6217 spin_lock_init(&adapter->fdir_perfect_lock);
6218
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08006219#ifdef CONFIG_IXGBE_DCB
Usha Ketineni88290092016-04-26 05:00:26 -07006220 ixgbe_init_dcb(adapter);
Alexander Duyck2f90b862008-11-20 20:52:10 -08006221#endif
Auke Kok9a799d72007-09-15 14:07:45 -07006222
6223 /* default flow control settings */
Don Skidmorecd7664f2009-03-31 21:33:44 +00006224 hw->fc.requested_mode = ixgbe_fc_full;
Don Skidmore71fd5702009-03-31 21:35:05 +00006225 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
John Fastabend9da712d2011-08-23 03:14:22 +00006226 ixgbe_pbthresh_setup(adapter);
Jesse Brandeburg2b9ade92008-08-26 04:27:10 -07006227 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
6228 hw->fc.send_xon = true;
Don Skidmore73d80953d2013-07-31 02:19:24 +00006229 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07006230
Alexander Duyck99d74482012-05-09 08:09:25 +00006231#ifdef CONFIG_PCI_IOV
Jacob Keller170e8542013-11-09 04:52:32 -08006232 if (max_vfs > 0)
6233 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
Alexander Duyck99d74482012-05-09 08:09:25 +00006234
Jacob Keller170e8542013-11-09 04:52:32 -08006235 /* assign number of SR-IOV VFs */
6236 if (hw->mac.type != ixgbe_mac_82598EB) {
ethan.zhaodcc23e32014-01-16 19:41:04 -08006237 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) {
Emil Tantilov5c11f002017-01-20 14:11:56 -08006238 max_vfs = 0;
Jacob Keller170e8542013-11-09 04:52:32 -08006239 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
Jacob Keller170e8542013-11-09 04:52:32 -08006240 }
6241 }
6242#endif /* CONFIG_PCI_IOV */
6243
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07006244 /* enable itr by default in dynamic mode */
Nelson, Shannonf7554a22009-09-18 09:46:06 +00006245 adapter->rx_itr_setting = 1;
Nelson, Shannonf7554a22009-09-18 09:46:06 +00006246 adapter->tx_itr_setting = 1;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07006247
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07006248 /* set default ring sizes */
6249 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
6250 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
6251
Alexander Duyckbd198052011-06-11 01:45:08 +00006252 /* set default work limits */
Alexander Duyck59224552011-08-31 00:01:06 +00006253 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK;
Alexander Duyckbd198052011-06-11 01:45:08 +00006254
Auke Kok9a799d72007-09-15 14:07:45 -07006255 /* initialize eeprom parameters */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006256 if (ixgbe_init_eeprom_params_generic(hw)) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006257 e_dev_err("EEPROM initialization failed\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006258 return -EIO;
6259 }
6260
John Fastabend2a47fa42013-11-06 09:54:52 -08006261 /* PF holds first pool slot */
Alexander Duyck4e039c12017-11-22 10:56:40 -08006262 set_bit(0, adapter->fwd_bitmask);
Auke Kok9a799d72007-09-15 14:07:45 -07006263 set_bit(__IXGBE_DOWN, &adapter->state);
6264
6265 return 0;
6266}
6267
6268/**
6269 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006270 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07006271 *
6272 * Return 0 on success, negative on failure
6273 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006274int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07006275{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006276 struct device *dev = tx_ring->dev;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006277 int orig_node = dev_to_node(dev);
Mark Rustadca8dfe22014-07-24 06:19:24 +00006278 int ring_node = -1;
Auke Kok9a799d72007-09-15 14:07:45 -07006279 int size;
6280
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006281 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006282
6283 if (tx_ring->q_vector)
Mark Rustadca8dfe22014-07-24 06:19:24 +00006284 ring_node = tx_ring->q_vector->numa_node;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006285
Alexander Duyckffed21b2017-01-17 08:37:29 -08006286 tx_ring->tx_buffer_info = vmalloc_node(size, ring_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00006287 if (!tx_ring->tx_buffer_info)
Alexander Duyckffed21b2017-01-17 08:37:29 -08006288 tx_ring->tx_buffer_info = vmalloc(size);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07006289 if (!tx_ring->tx_buffer_info)
6290 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07006291
6292 /* round up to nearest 4K */
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08006293 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006294 tx_ring->size = ALIGN(tx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07006295
Mark Rustadca8dfe22014-07-24 06:19:24 +00006296 set_dev_node(dev, ring_node);
Alexander Duyckde88eee2012-02-08 07:49:59 +00006297 tx_ring->desc = dma_alloc_coherent(dev,
6298 tx_ring->size,
6299 &tx_ring->dma,
6300 GFP_KERNEL);
6301 set_dev_node(dev, orig_node);
6302 if (!tx_ring->desc)
6303 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
6304 &tx_ring->dma, GFP_KERNEL);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07006305 if (!tx_ring->desc)
6306 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07006307
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006308 tx_ring->next_to_use = 0;
6309 tx_ring->next_to_clean = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006310 return 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07006311
6312err:
6313 vfree(tx_ring->tx_buffer_info);
6314 tx_ring->tx_buffer_info = NULL;
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006315 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07006316 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07006317}
6318
6319/**
Alexander Duyck69888672008-09-11 20:05:39 -07006320 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
6321 * @adapter: board private structure
6322 *
6323 * If this function returns with an error, then it's possible one or
6324 * more of the rings is populated (while the rest are not). It is the
6325 * callers duty to clean those orphaned rings.
6326 *
6327 * Return 0 on success, negative on failure
6328 **/
6329static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
6330{
John Fastabend33fdc822017-04-24 03:30:18 -07006331 int i, j = 0, err = 0;
Alexander Duyck69888672008-09-11 20:05:39 -07006332
6333 for (i = 0; i < adapter->num_tx_queues; i++) {
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006334 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07006335 if (!err)
6336 continue;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006337
Emil Tantilov396e7992010-07-01 20:05:12 +00006338 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006339 goto err_setup_tx;
Alexander Duyck69888672008-09-11 20:05:39 -07006340 }
John Fastabend33fdc822017-04-24 03:30:18 -07006341 for (j = 0; j < adapter->num_xdp_queues; j++) {
6342 err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]);
6343 if (!err)
6344 continue;
6345
6346 e_err(probe, "Allocation for Tx Queue %u failed\n", j);
6347 goto err_setup_tx;
6348 }
Alexander Duyck69888672008-09-11 20:05:39 -07006349
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006350 return 0;
6351err_setup_tx:
6352 /* rewind the index freeing the rings as we go */
John Fastabend33fdc822017-04-24 03:30:18 -07006353 while (j--)
6354 ixgbe_free_tx_resources(adapter->xdp_ring[j]);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006355 while (i--)
6356 ixgbe_free_tx_resources(adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07006357 return err;
6358}
6359
6360/**
Auke Kok9a799d72007-09-15 14:07:45 -07006361 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
Tony Nguyen5ba643c2017-12-04 11:28:30 -08006362 * @adapter: pointer to ixgbe_adapter
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006363 * @rx_ring: rx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07006364 *
6365 * Returns 0 on success, negative on failure
6366 **/
John Fastabend92470802017-04-24 03:30:17 -07006367int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
6368 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07006369{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006370 struct device *dev = rx_ring->dev;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006371 int orig_node = dev_to_node(dev);
Mark Rustadca8dfe22014-07-24 06:19:24 +00006372 int ring_node = -1;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006373 int size;
Auke Kok9a799d72007-09-15 14:07:45 -07006374
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006375 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006376
6377 if (rx_ring->q_vector)
Mark Rustadca8dfe22014-07-24 06:19:24 +00006378 ring_node = rx_ring->q_vector->numa_node;
Alexander Duyckde88eee2012-02-08 07:49:59 +00006379
Alexander Duyckffed21b2017-01-17 08:37:29 -08006380 rx_ring->rx_buffer_info = vmalloc_node(size, ring_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00006381 if (!rx_ring->rx_buffer_info)
Alexander Duyckffed21b2017-01-17 08:37:29 -08006382 rx_ring->rx_buffer_info = vmalloc(size);
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006383 if (!rx_ring->rx_buffer_info)
6384 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07006385
Auke Kok9a799d72007-09-15 14:07:45 -07006386 /* Round up to nearest 4K */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006387 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
6388 rx_ring->size = ALIGN(rx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07006389
Mark Rustadca8dfe22014-07-24 06:19:24 +00006390 set_dev_node(dev, ring_node);
Alexander Duyckde88eee2012-02-08 07:49:59 +00006391 rx_ring->desc = dma_alloc_coherent(dev,
6392 rx_ring->size,
6393 &rx_ring->dma,
6394 GFP_KERNEL);
6395 set_dev_node(dev, orig_node);
6396 if (!rx_ring->desc)
6397 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
6398 &rx_ring->dma, GFP_KERNEL);
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006399 if (!rx_ring->desc)
6400 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07006401
Jesse Brandeburg3a581072008-08-26 04:27:08 -07006402 rx_ring->next_to_clean = 0;
6403 rx_ring->next_to_use = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006404
Jesper Dangaard Brouer99ffc5a2018-01-03 11:25:29 +01006405 /* XDP RX-queue info */
6406 if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev,
6407 rx_ring->queue_index) < 0)
6408 goto err;
6409
John Fastabend92470802017-04-24 03:30:17 -07006410 rx_ring->xdp_prog = adapter->xdp_prog;
6411
Auke Kok9a799d72007-09-15 14:07:45 -07006412 return 0;
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006413err:
6414 vfree(rx_ring->rx_buffer_info);
6415 rx_ring->rx_buffer_info = NULL;
6416 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07006417 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07006418}
6419
6420/**
Alexander Duyck69888672008-09-11 20:05:39 -07006421 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
6422 * @adapter: board private structure
6423 *
6424 * If this function returns with an error, then it's possible one or
6425 * more of the rings is populated (while the rest are not). It is the
6426 * callers duty to clean those orphaned rings.
6427 *
6428 * Return 0 on success, negative on failure
6429 **/
Alexander Duyck69888672008-09-11 20:05:39 -07006430static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
6431{
6432 int i, err = 0;
6433
6434 for (i = 0; i < adapter->num_rx_queues; i++) {
John Fastabend92470802017-04-24 03:30:17 -07006435 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07006436 if (!err)
6437 continue;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006438
Emil Tantilov396e7992010-07-01 20:05:12 +00006439 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006440 goto err_setup_rx;
Alexander Duyck69888672008-09-11 20:05:39 -07006441 }
6442
Alexander Duyck7c8ae652012-05-05 05:32:47 +00006443#ifdef IXGBE_FCOE
6444 err = ixgbe_setup_fcoe_ddp_resources(adapter);
6445 if (!err)
6446#endif
6447 return 0;
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006448err_setup_rx:
6449 /* rewind the index freeing the rings as we go */
6450 while (i--)
6451 ixgbe_free_rx_resources(adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07006452 return err;
6453}
6454
6455/**
Auke Kok9a799d72007-09-15 14:07:45 -07006456 * ixgbe_free_tx_resources - Free Tx Resources per Queue
Auke Kok9a799d72007-09-15 14:07:45 -07006457 * @tx_ring: Tx descriptor ring for a specific queue
6458 *
6459 * Free all transmit software resources
6460 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006461void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07006462{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006463 ixgbe_clean_tx_ring(tx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07006464
6465 vfree(tx_ring->tx_buffer_info);
6466 tx_ring->tx_buffer_info = NULL;
6467
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006468 /* if not set, then don't free */
6469 if (!tx_ring->desc)
6470 return;
6471
6472 dma_free_coherent(tx_ring->dev, tx_ring->size,
6473 tx_ring->desc, tx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07006474
6475 tx_ring->desc = NULL;
6476}
6477
6478/**
6479 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
6480 * @adapter: board private structure
6481 *
6482 * Free all transmit software resources
6483 **/
6484static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
6485{
6486 int i;
6487
6488 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00006489 if (adapter->tx_ring[i]->desc)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006490 ixgbe_free_tx_resources(adapter->tx_ring[i]);
John Fastabend33fdc822017-04-24 03:30:18 -07006491 for (i = 0; i < adapter->num_xdp_queues; i++)
6492 if (adapter->xdp_ring[i]->desc)
6493 ixgbe_free_tx_resources(adapter->xdp_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07006494}
6495
6496/**
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006497 * ixgbe_free_rx_resources - Free Rx Resources
Auke Kok9a799d72007-09-15 14:07:45 -07006498 * @rx_ring: ring to clean the resources from
6499 *
6500 * Free all receive software resources
6501 **/
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006502void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07006503{
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006504 ixgbe_clean_rx_ring(rx_ring);
Auke Kok9a799d72007-09-15 14:07:45 -07006505
John Fastabend92470802017-04-24 03:30:17 -07006506 rx_ring->xdp_prog = NULL;
Jesper Dangaard Brouer99ffc5a2018-01-03 11:25:29 +01006507 xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
Auke Kok9a799d72007-09-15 14:07:45 -07006508 vfree(rx_ring->rx_buffer_info);
6509 rx_ring->rx_buffer_info = NULL;
6510
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006511 /* if not set, then don't free */
6512 if (!rx_ring->desc)
6513 return;
6514
6515 dma_free_coherent(rx_ring->dev, rx_ring->size,
6516 rx_ring->desc, rx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07006517
6518 rx_ring->desc = NULL;
6519}
6520
6521/**
6522 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
6523 * @adapter: board private structure
6524 *
6525 * Free all receive software resources
6526 **/
6527static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
6528{
6529 int i;
6530
Alexander Duyck7c8ae652012-05-05 05:32:47 +00006531#ifdef IXGBE_FCOE
6532 ixgbe_free_fcoe_ddp_resources(adapter);
6533
6534#endif
Auke Kok9a799d72007-09-15 14:07:45 -07006535 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00006536 if (adapter->rx_ring[i]->desc)
Alexander Duyckb6ec8952010-11-16 19:26:49 -08006537 ixgbe_free_rx_resources(adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07006538}
6539
6540/**
Auke Kok9a799d72007-09-15 14:07:45 -07006541 * ixgbe_change_mtu - Change the Maximum Transfer Unit
6542 * @netdev: network interface device structure
6543 * @new_mtu: new value for maximum frame size
6544 *
6545 * Returns 0 on success, negative on failure
6546 **/
6547static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
6548{
6549 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Alexander Duyck655309e2012-02-08 07:50:35 +00006550
6551 /*
Alexander Duyck872844d2012-08-15 02:10:43 +00006552 * For 82599EB we cannot allow legacy VFs to enable their receive
6553 * paths when MTU greater than 1500 is configured. So display a
6554 * warning that legacy VFs will be disabled.
Alexander Duyck655309e2012-02-08 07:50:35 +00006555 */
6556 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
6557 (adapter->hw.mac.type == ixgbe_mac_82599EB) &&
Jarod Wilson91c527a2016-10-17 15:54:05 -04006558 (new_mtu > ETH_DATA_LEN))
Alexander Duyck872844d2012-08-15 02:10:43 +00006559 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006560
Emil Tantilov396e7992010-07-01 20:05:12 +00006561 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
Alexander Duyck655309e2012-02-08 07:50:35 +00006562
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006563 /* must set new MTU before calling down or up */
Auke Kok9a799d72007-09-15 14:07:45 -07006564 netdev->mtu = new_mtu;
6565
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08006566 if (netif_running(netdev))
6567 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006568
6569 return 0;
6570}
6571
6572/**
6573 * ixgbe_open - Called when a network interface is made active
6574 * @netdev: network interface device structure
6575 *
6576 * Returns 0 on success, negative value on failure
6577 *
6578 * The open entry point is called when a network interface is made
6579 * active by the system (IFF_UP). At this point all resources needed
6580 * for transmit and receive operations are allocated, the interrupt
6581 * handler is registered with the OS, the watchdog timer is started,
6582 * and the stack is notified that the interface is ready.
6583 **/
Stefan Assmann6c211fe12016-02-03 09:20:48 +01006584int ixgbe_open(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07006585{
6586 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Don Skidmore961fac82015-06-09 16:09:47 -07006587 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend2a47fa42013-11-06 09:54:52 -08006588 int err, queues;
Auke Kok9a799d72007-09-15 14:07:45 -07006589
Auke Kok4bebfaa2008-02-11 09:26:01 -08006590 /* disallow open during test */
6591 if (test_bit(__IXGBE_TESTING, &adapter->state))
6592 return -EBUSY;
6593
Jesse Brandeburg54386462009-04-17 20:44:27 +00006594 netif_carrier_off(netdev);
6595
Auke Kok9a799d72007-09-15 14:07:45 -07006596 /* allocate transmit descriptors */
6597 err = ixgbe_setup_all_tx_resources(adapter);
6598 if (err)
6599 goto err_setup_tx;
6600
Auke Kok9a799d72007-09-15 14:07:45 -07006601 /* allocate receive descriptors */
6602 err = ixgbe_setup_all_rx_resources(adapter);
6603 if (err)
6604 goto err_setup_rx;
6605
6606 ixgbe_configure(adapter);
6607
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006608 err = ixgbe_request_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006609 if (err)
6610 goto err_req_irq;
6611
Alexander Duyckac802f52012-07-12 05:52:53 +00006612 /* Notify the stack of the actual queue counts. */
Alexander Duyck49cfbeb2017-11-22 10:57:35 -08006613 queues = adapter->num_tx_queues;
John Fastabend2a47fa42013-11-06 09:54:52 -08006614 err = netif_set_real_num_tx_queues(netdev, queues);
Alexander Duyckac802f52012-07-12 05:52:53 +00006615 if (err)
6616 goto err_set_queues;
6617
Alexander Duyck49cfbeb2017-11-22 10:57:35 -08006618 queues = adapter->num_rx_queues;
John Fastabend2a47fa42013-11-06 09:54:52 -08006619 err = netif_set_real_num_rx_queues(netdev, queues);
Alexander Duyckac802f52012-07-12 05:52:53 +00006620 if (err)
6621 goto err_set_queues;
6622
Jacob Keller1a71ab22012-08-25 03:54:19 +00006623 ixgbe_ptp_init(adapter);
Jacob Keller1a71ab22012-08-25 03:54:19 +00006624
Alexander Duyckc7ccde02011-07-21 00:40:40 +00006625 ixgbe_up_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006626
Emil Tantilova21d0822016-08-10 11:19:23 -07006627 ixgbe_clear_udp_tunnel_port(adapter, IXGBE_VXLANCTRL_ALL_UDPPORT_MASK);
Alexander Duyckb3a49552016-06-16 12:22:19 -07006628 udp_tunnel_get_rx_info(netdev);
Mark Rustad67359c32015-06-15 11:33:25 -07006629
Auke Kok9a799d72007-09-15 14:07:45 -07006630 return 0;
6631
Alexander Duyckac802f52012-07-12 05:52:53 +00006632err_set_queues:
6633 ixgbe_free_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006634err_req_irq:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00006635 ixgbe_free_all_rx_resources(adapter);
Don Skidmore961fac82015-06-09 16:09:47 -07006636 if (hw->phy.ops.set_phy_power && !adapter->wol)
6637 hw->phy.ops.set_phy_power(&adapter->hw, false);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006638err_setup_rx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00006639 ixgbe_free_all_tx_resources(adapter);
Alexander Duyckde3d5b92012-05-18 06:33:47 +00006640err_setup_tx:
Auke Kok9a799d72007-09-15 14:07:45 -07006641 ixgbe_reset(adapter);
6642
6643 return err;
6644}
6645
Jacob Kellera0cccce2014-05-16 05:12:29 +00006646static void ixgbe_close_suspend(struct ixgbe_adapter *adapter)
6647{
6648 ixgbe_ptp_suspend(adapter);
6649
Don Skidmore6ac74392015-06-17 17:34:31 -04006650 if (adapter->hw.phy.ops.enter_lplu) {
6651 adapter->hw.phy.reset_disable = true;
6652 ixgbe_down(adapter);
6653 adapter->hw.phy.ops.enter_lplu(&adapter->hw);
6654 adapter->hw.phy.reset_disable = false;
6655 } else {
6656 ixgbe_down(adapter);
6657 }
6658
Jacob Kellera0cccce2014-05-16 05:12:29 +00006659 ixgbe_free_irq(adapter);
6660
6661 ixgbe_free_all_tx_resources(adapter);
6662 ixgbe_free_all_rx_resources(adapter);
6663}
6664
Auke Kok9a799d72007-09-15 14:07:45 -07006665/**
6666 * ixgbe_close - Disables a network interface
6667 * @netdev: network interface device structure
6668 *
6669 * Returns 0, this is not allowed to fail
6670 *
6671 * The close entry point is called when an interface is de-activated
6672 * by the OS. The hardware is still under the drivers control, but
6673 * needs to be disabled. A global MAC reset is issued to stop the
6674 * hardware, and all transmit and receive resources are freed.
6675 **/
Stefan Assmann6c211fe12016-02-03 09:20:48 +01006676int ixgbe_close(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07006677{
6678 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006679
Jacob Keller1a71ab22012-08-25 03:54:19 +00006680 ixgbe_ptp_stop(adapter);
Jacob Keller1a71ab22012-08-25 03:54:19 +00006681
Emil Tantilovf7f37e72016-11-11 10:07:47 -08006682 if (netif_device_present(netdev))
6683 ixgbe_close_suspend(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006684
Alexander Duycke4911d52011-05-11 07:18:52 +00006685 ixgbe_fdir_filter_exit(adapter);
6686
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08006687 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07006688
6689 return 0;
6690}
6691
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006692#ifdef CONFIG_PM
6693static int ixgbe_resume(struct pci_dev *pdev)
6694{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08006695 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
6696 struct net_device *netdev = adapter->netdev;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006697 u32 err;
6698
Mark Rustad0391bbe2014-02-28 15:48:55 -08006699 adapter->hw.hw_addr = adapter->io_addr;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006700 pci_set_power_state(pdev, PCI_D0);
6701 pci_restore_state(pdev);
Don Skidmore656ab812009-12-23 21:19:19 -08006702 /*
6703 * pci_restore_state clears dev->state_saved so call
6704 * pci_save_state to restore it.
6705 */
6706 pci_save_state(pdev);
gouji-new9ce77662009-05-06 10:44:45 +00006707
6708 err = pci_enable_device_mem(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006709 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006710 e_dev_err("Cannot enable PCI device from suspend\n");
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006711 return err;
6712 }
Peter Zijlstra4e857c52014-03-17 18:06:10 +01006713 smp_mb__before_atomic();
Mark Rustad41c62842014-03-12 00:38:35 +00006714 clear_bit(__IXGBE_DISABLED, &adapter->state);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006715 pci_set_master(pdev);
6716
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07006717 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006718
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006719 ixgbe_reset(adapter);
6720
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00006721 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6722
Alexander Duyckac802f52012-07-12 05:52:53 +00006723 rtnl_lock();
6724 err = ixgbe_init_interrupt_scheme(adapter);
6725 if (!err && netif_running(netdev))
Alexander Duyckc60fbb02010-11-16 19:26:54 -08006726 err = ixgbe_open(netdev);
Alexander Duyckac802f52012-07-12 05:52:53 +00006727
Emil Tantilovf7f37e72016-11-11 10:07:47 -08006728
6729 if (!err)
6730 netif_device_attach(netdev);
Alexander Duyckac802f52012-07-12 05:52:53 +00006731 rtnl_unlock();
6732
Emil Tantilovf7f37e72016-11-11 10:07:47 -08006733 return err;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006734}
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006735#endif /* CONFIG_PM */
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00006736
6737static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006738{
Alexander Duyckc60fbb02010-11-16 19:26:54 -08006739 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
6740 struct net_device *netdev = adapter->netdev;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006741 struct ixgbe_hw *hw = &adapter->hw;
Emil Tantilovd9d11eb2017-10-10 13:20:01 -07006742 u32 ctrl;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006743 u32 wufc = adapter->wol;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006744#ifdef CONFIG_PM
6745 int retval = 0;
6746#endif
6747
Emil Tantilovf7f37e72016-11-11 10:07:47 -08006748 rtnl_lock();
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006749 netif_device_detach(netdev);
6750
Jacob Kellera0cccce2014-05-16 05:12:29 +00006751 if (netif_running(netdev))
6752 ixgbe_close_suspend(adapter);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006753
Alexander Duyck5f5ae6f2010-11-16 19:26:52 -08006754 ixgbe_clear_interrupt_scheme(adapter);
Emil Tantilovf7f37e72016-11-11 10:07:47 -08006755 rtnl_unlock();
Alexander Duyck5f5ae6f2010-11-16 19:26:52 -08006756
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006757#ifdef CONFIG_PM
6758 retval = pci_save_state(pdev);
6759 if (retval)
6760 return retval;
Jesse Brandeburg4df10462009-03-13 22:15:31 +00006761
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006762#endif
Jacob Kellerf4f10402013-06-25 07:59:23 +00006763 if (hw->mac.ops.stop_link_on_d3)
6764 hw->mac.ops.stop_link_on_d3(hw);
6765
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006766 if (wufc) {
Emil Tantilovd9d11eb2017-10-10 13:20:01 -07006767 u32 fctrl;
6768
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006769 ixgbe_set_rx_mode(netdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006770
Emil Tantilovec74a472012-09-20 03:33:56 +00006771 /* enable the optics for 82599 SFP+ fiber as we can WoL */
6772 if (hw->mac.ops.enable_tx_laser)
Don Skidmorec509e752012-04-05 08:12:05 +00006773 hw->mac.ops.enable_tx_laser(hw);
6774
Emil Tantilovd9d11eb2017-10-10 13:20:01 -07006775 /* enable the reception of multicast packets */
6776 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
6777 fctrl |= IXGBE_FCTRL_MPE;
6778 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006779
6780 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
6781 ctrl |= IXGBE_CTRL_GIO_DIS;
6782 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
6783
6784 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
6785 } else {
6786 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
6787 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
6788 }
6789
Alexander Duyckbd508172010-11-16 19:27:03 -08006790 switch (hw->mac.type) {
6791 case ixgbe_mac_82598EB:
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07006792 pci_wake_from_d3(pdev, false);
Alexander Duyckbd508172010-11-16 19:27:03 -08006793 break;
6794 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08006795 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006796 case ixgbe_mac_X550:
6797 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07006798 case ixgbe_mac_x550em_a:
Alexander Duyckbd508172010-11-16 19:27:03 -08006799 pci_wake_from_d3(pdev, !!wufc);
6800 break;
6801 default:
6802 break;
6803 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006804
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00006805 *enable_wake = !!wufc;
Don Skidmore961fac82015-06-09 16:09:47 -07006806 if (hw->phy.ops.set_phy_power && !*enable_wake)
6807 hw->phy.ops.set_phy_power(hw, false);
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00006808
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006809 ixgbe_release_hw_control(adapter);
6810
Mark Rustad41c62842014-03-12 00:38:35 +00006811 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
6812 pci_disable_device(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006813
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006814 return 0;
6815}
6816
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00006817#ifdef CONFIG_PM
6818static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
6819{
6820 int retval;
6821 bool wake;
6822
6823 retval = __ixgbe_shutdown(pdev, &wake);
6824 if (retval)
6825 return retval;
6826
6827 if (wake) {
6828 pci_prepare_to_sleep(pdev);
6829 } else {
6830 pci_wake_from_d3(pdev, false);
6831 pci_set_power_state(pdev, PCI_D3hot);
6832 }
6833
6834 return 0;
6835}
6836#endif /* CONFIG_PM */
6837
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006838static void ixgbe_shutdown(struct pci_dev *pdev)
6839{
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00006840 bool wake;
6841
6842 __ixgbe_shutdown(pdev, &wake);
6843
6844 if (system_state == SYSTEM_POWER_OFF) {
6845 pci_wake_from_d3(pdev, wake);
6846 pci_set_power_state(pdev, PCI_D3hot);
6847 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07006848}
6849
6850/**
Auke Kok9a799d72007-09-15 14:07:45 -07006851 * ixgbe_update_stats - Update the board statistics counters.
6852 * @adapter: board private structure
6853 **/
6854void ixgbe_update_stats(struct ixgbe_adapter *adapter)
6855{
Ajit Khaparde2d86f132009-10-07 02:43:49 +00006856 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07006857 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006858 struct ixgbe_hw_stats *hwstats = &adapter->stats;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006859 u64 total_mpc = 0;
6860 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006861 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
6862 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
Jesper Dangaard Brouer86e23492017-09-04 20:40:22 +02006863 u64 alloc_rx_page = 0;
Alexander Duyck8a0da212012-01-31 02:59:49 +00006864 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006865
Don Skidmored08935c2010-06-11 13:20:29 +00006866 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
6867 test_bit(__IXGBE_RESETTING, &adapter->state))
6868 return;
6869
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00006870 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00006871 u64 rsc_count = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00006872 u64 rsc_flush = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00006873 for (i = 0; i < adapter->num_rx_queues; i++) {
Alexander Duyck5b7da512010-11-16 19:26:50 -08006874 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
6875 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00006876 }
6877 adapter->rsc_total_count = rsc_count;
6878 adapter->rsc_total_flush = rsc_flush;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00006879 }
6880
Alexander Duyck5b7da512010-11-16 19:26:50 -08006881 for (i = 0; i < adapter->num_rx_queues; i++) {
6882 struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
6883 non_eop_descs += rx_ring->rx_stats.non_eop_descs;
Jesper Dangaard Brouer86e23492017-09-04 20:40:22 +02006884 alloc_rx_page += rx_ring->rx_stats.alloc_rx_page;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006885 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
6886 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
Alexander Duyck8a0da212012-01-31 02:59:49 +00006887 hw_csum_rx_error += rx_ring->rx_stats.csum_err;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006888 bytes += rx_ring->stats.bytes;
6889 packets += rx_ring->stats.packets;
6890 }
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00006891 adapter->non_eop_descs = non_eop_descs;
Jesper Dangaard Brouer86e23492017-09-04 20:40:22 +02006892 adapter->alloc_rx_page = alloc_rx_page;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006893 adapter->alloc_rx_page_failed = alloc_rx_page_failed;
6894 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
Alexander Duyck8a0da212012-01-31 02:59:49 +00006895 adapter->hw_csum_rx_error = hw_csum_rx_error;
Alexander Duyck5b7da512010-11-16 19:26:50 -08006896 netdev->stats.rx_bytes = bytes;
6897 netdev->stats.rx_packets = packets;
6898
6899 bytes = 0;
6900 packets = 0;
6901 /* gather some stats to the adapter struct that are per queue */
6902 for (i = 0; i < adapter->num_tx_queues; i++) {
6903 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
6904 restart_queue += tx_ring->tx_stats.restart_queue;
6905 tx_busy += tx_ring->tx_stats.tx_busy;
6906 bytes += tx_ring->stats.bytes;
6907 packets += tx_ring->stats.packets;
6908 }
John Fastabend33fdc822017-04-24 03:30:18 -07006909 for (i = 0; i < adapter->num_xdp_queues; i++) {
6910 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i];
6911
6912 restart_queue += xdp_ring->tx_stats.restart_queue;
6913 tx_busy += xdp_ring->tx_stats.tx_busy;
6914 bytes += xdp_ring->stats.bytes;
6915 packets += xdp_ring->stats.packets;
6916 }
Alexander Duyck5b7da512010-11-16 19:26:50 -08006917 adapter->restart_queue = restart_queue;
6918 adapter->tx_busy = tx_busy;
6919 netdev->stats.tx_bytes = bytes;
6920 netdev->stats.tx_packets = packets;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00006921
Joe Perches7ca647b2010-09-07 21:35:40 +00006922 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006923
6924 /* 8 register reads */
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006925 for (i = 0; i < 8; i++) {
6926 /* for packet buffers not used, the register should read 0 */
6927 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
6928 missed_rx += mpc;
Joe Perches7ca647b2010-09-07 21:35:40 +00006929 hwstats->mpc[i] += mpc;
6930 total_mpc += hwstats->mpc[i];
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006931 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
6932 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006933 switch (hw->mac.type) {
6934 case ixgbe_mac_82598EB:
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006935 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
6936 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
6937 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
Joe Perches7ca647b2010-09-07 21:35:40 +00006938 hwstats->pxonrxc[i] +=
6939 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006940 break;
6941 case ixgbe_mac_82599EB:
Don Skidmoreb93a2222010-11-16 19:27:17 -08006942 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006943 case ixgbe_mac_X550:
6944 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07006945 case ixgbe_mac_x550em_a:
Alexander Duyckbd508172010-11-16 19:27:03 -08006946 hwstats->pxonrxc[i] +=
6947 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
Alexander Duyckbd508172010-11-16 19:27:03 -08006948 break;
6949 default:
6950 break;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006951 }
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006952 }
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006953
6954 /*16 register reads */
6955 for (i = 0; i < 16; i++) {
6956 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
6957 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
6958 if ((hw->mac.type == ixgbe_mac_82599EB) ||
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006959 (hw->mac.type == ixgbe_mac_X540) ||
6960 (hw->mac.type == ixgbe_mac_X550) ||
Mark Rustad49425df2016-04-01 12:18:09 -07006961 (hw->mac.type == ixgbe_mac_X550EM_x) ||
6962 (hw->mac.type == ixgbe_mac_x550em_a)) {
Emil Tantilov1a70db4b2011-07-26 07:51:41 +00006963 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
6964 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */
6965 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
6966 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */
6967 }
6968 }
6969
Joe Perches7ca647b2010-09-07 21:35:40 +00006970 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006971 /* work around hardware counting issue */
Joe Perches7ca647b2010-09-07 21:35:40 +00006972 hwstats->gprc -= missed_rx;
Auke Kok9a799d72007-09-15 14:07:45 -07006973
John Fastabendc84d3242010-11-16 19:27:12 -08006974 ixgbe_update_xoff_received(adapter);
6975
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08006976 /* 82598 hardware only has a 32 bit counter in the high register */
Alexander Duyckbd508172010-11-16 19:27:03 -08006977 switch (hw->mac.type) {
6978 case ixgbe_mac_82598EB:
6979 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
Alexander Duyckbd508172010-11-16 19:27:03 -08006980 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
6981 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
6982 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
6983 break;
Don Skidmoreb93a2222010-11-16 19:27:17 -08006984 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006985 case ixgbe_mac_X550:
6986 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07006987 case ixgbe_mac_x550em_a:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00006988 /* OS2BMC stats are X540 and later */
Emil Tantilov58f6bcf2011-04-21 08:43:43 +00006989 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
6990 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
6991 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
6992 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
Tony Nguyen93df9462017-05-31 04:43:47 -07006993 /* fall through */
Emil Tantilov58f6bcf2011-04-21 08:43:43 +00006994 case ixgbe_mac_82599EB:
Alexander Duycka4d4f622012-03-28 08:03:32 +00006995 for (i = 0; i < 16; i++)
6996 adapter->hw_rx_no_dma_resources +=
6997 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
Joe Perches7ca647b2010-09-07 21:35:40 +00006998 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
Alexander Duyckbd508172010-11-16 19:27:03 -08006999 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00007000 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
Alexander Duyckbd508172010-11-16 19:27:03 -08007001 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00007002 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
Alexander Duyckbd508172010-11-16 19:27:03 -08007003 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00007004 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
Joe Perches7ca647b2010-09-07 21:35:40 +00007005 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
7006 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
Yi Zou6d455222009-05-13 13:12:16 +00007007#ifdef IXGBE_FCOE
Joe Perches7ca647b2010-09-07 21:35:40 +00007008 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
7009 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
7010 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
7011 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
7012 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
7013 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
Amir Hanania7b859eb2011-08-31 02:07:55 +00007014 /* Add up per cpu counters for total ddp aloc fail */
Alexander Duyck5a1ee272012-05-05 17:14:28 +00007015 if (adapter->fcoe.ddp_pool) {
7016 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
7017 struct ixgbe_fcoe_ddp_pool *ddp_pool;
7018 unsigned int cpu;
7019 u64 noddp = 0, noddp_ext_buff = 0;
Amir Hanania7b859eb2011-08-31 02:07:55 +00007020 for_each_possible_cpu(cpu) {
Alexander Duyck5a1ee272012-05-05 17:14:28 +00007021 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu);
7022 noddp += ddp_pool->noddp;
7023 noddp_ext_buff += ddp_pool->noddp_ext_buff;
Amir Hanania7b859eb2011-08-31 02:07:55 +00007024 }
Alexander Duyck5a1ee272012-05-05 17:14:28 +00007025 hwstats->fcoe_noddp = noddp;
7026 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff;
Amir Hanania7b859eb2011-08-31 02:07:55 +00007027 }
Yi Zou6d455222009-05-13 13:12:16 +00007028#endif /* IXGBE_FCOE */
Alexander Duyckbd508172010-11-16 19:27:03 -08007029 break;
7030 default:
7031 break;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007032 }
Auke Kok9a799d72007-09-15 14:07:45 -07007033 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
Joe Perches7ca647b2010-09-07 21:35:40 +00007034 hwstats->bprc += bprc;
7035 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007036 if (hw->mac.type == ixgbe_mac_82598EB)
Joe Perches7ca647b2010-09-07 21:35:40 +00007037 hwstats->mprc -= bprc;
7038 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
7039 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
7040 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
7041 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
7042 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
7043 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
7044 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
7045 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08007046 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00007047 hwstats->lxontxc += lxon;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08007048 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00007049 hwstats->lxofftxc += lxoff;
Joe Perches7ca647b2010-09-07 21:35:40 +00007050 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
7051 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08007052 /*
7053 * 82598 errata - tx of flow control packets is included in tx counters
7054 */
7055 xon_off_tot = lxon + lxoff;
Joe Perches7ca647b2010-09-07 21:35:40 +00007056 hwstats->gptc -= xon_off_tot;
7057 hwstats->mptc -= xon_off_tot;
7058 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
7059 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
7060 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
7061 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
7062 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
7063 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
7064 hwstats->ptc64 -= xon_off_tot;
7065 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
7066 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
7067 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
7068 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
7069 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
7070 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
Auke Kok9a799d72007-09-15 14:07:45 -07007071
7072 /* Fill out the OS statistics structure */
Joe Perches7ca647b2010-09-07 21:35:40 +00007073 netdev->stats.multicast = hwstats->mprc;
Auke Kok9a799d72007-09-15 14:07:45 -07007074
7075 /* Rx Errors */
Joe Perches7ca647b2010-09-07 21:35:40 +00007076 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00007077 netdev->stats.rx_dropped = 0;
Joe Perches7ca647b2010-09-07 21:35:40 +00007078 netdev->stats.rx_length_errors = hwstats->rlec;
7079 netdev->stats.rx_crc_errors = hwstats->crcerrs;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00007080 netdev->stats.rx_missed_errors = total_mpc;
Auke Kok9a799d72007-09-15 14:07:45 -07007081}
7082
7083/**
Alexander Duyckd034acf2011-04-27 09:25:34 +00007084 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007085 * @adapter: pointer to the device adapter structure
Auke Kok9a799d72007-09-15 14:07:45 -07007086 **/
Alexander Duyckd034acf2011-04-27 09:25:34 +00007087static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07007088{
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007089 struct ixgbe_hw *hw = &adapter->hw;
7090 int i;
7091
Alexander Duyckd034acf2011-04-27 09:25:34 +00007092 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
7093 return;
7094
7095 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
7096
7097 /* if interface is down do nothing */
7098 if (test_bit(__IXGBE_DOWN, &adapter->state))
7099 return;
7100
7101 /* do nothing if we are not using signature filters */
7102 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
7103 return;
7104
7105 adapter->fdir_overflow++;
7106
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007107 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
7108 for (i = 0; i < adapter->num_tx_queues; i++)
Alexander Duyck7d637bc2010-11-16 19:26:56 -08007109 set_bit(__IXGBE_TX_FDIR_INIT_DONE,
Jacob Kellere7cf7452014-04-09 06:03:10 +00007110 &(adapter->tx_ring[i]->state));
John Fastabend33fdc822017-04-24 03:30:18 -07007111 for (i = 0; i < adapter->num_xdp_queues; i++)
7112 set_bit(__IXGBE_TX_FDIR_INIT_DONE,
7113 &adapter->xdp_ring[i]->state);
Alexander Duyckd034acf2011-04-27 09:25:34 +00007114 /* re-enable flow director interrupts */
7115 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007116 } else {
Emil Tantilov396e7992010-07-01 20:05:12 +00007117 e_err(probe, "failed to finish FDIR re-initialization, "
Emil Tantilov849c4542010-06-03 16:53:41 +00007118 "ignored adding FDIR ATR filters\n");
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007119 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007120}
7121
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007122/**
7123 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007124 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007125 *
7126 * This function serves two purposes. First it strobes the interrupt lines
Stephen Hemminger52f33af2011-12-22 16:34:52 +00007127 * in order to make certain interrupts are occurring. Secondly it sets the
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007128 * bits needed to check for TX hangs. As a result we should immediately
Stephen Hemminger52f33af2011-12-22 16:34:52 +00007129 * determine if a hang has occurred.
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007130 */
7131static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
7132{
Auke Kok9a799d72007-09-15 14:07:45 -07007133 struct ixgbe_hw *hw = &adapter->hw;
7134 u64 eics = 0;
7135 int i;
7136
Mark Rustad09f40ae2014-01-14 18:53:11 -08007137 /* If we're down, removing or resetting, just bail */
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007138 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08007139 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007140 test_bit(__IXGBE_RESETTING, &adapter->state))
7141 return;
Alexander Duyckfe49f042009-06-04 16:00:09 +00007142
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007143 /* Force detection of hung controller */
7144 if (netif_carrier_ok(adapter->netdev)) {
7145 for (i = 0; i < adapter->num_tx_queues; i++)
7146 set_check_for_tx_hang(adapter->tx_ring[i]);
John Fastabend33fdc822017-04-24 03:30:18 -07007147 for (i = 0; i < adapter->num_xdp_queues; i++)
7148 set_check_for_tx_hang(adapter->xdp_ring[i]);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007149 }
Alexander Duyckfe49f042009-06-04 16:00:09 +00007150
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00007151 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00007152 /*
7153 * for legacy and MSI interrupts don't set any bits
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00007154 * that are enabled for EIAM, because this operation
Alexander Duyckfe49f042009-06-04 16:00:09 +00007155 * would set *both* EIMS and EICS for any bit in EIAM
7156 */
7157 IXGBE_WRITE_REG(hw, IXGBE_EICS,
7158 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007159 } else {
7160 /* get one bit for every active tx/rx interrupt vector */
Alexander Duyck49c7ffb2012-05-05 05:30:43 +00007161 for (i = 0; i < adapter->num_q_vectors; i++) {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007162 struct ixgbe_q_vector *qv = adapter->q_vector[i];
Alexander Duyckefe3d3c2011-07-15 03:05:21 +00007163 if (qv->rx.ring || qv->tx.ring)
Jacob Kellerb4f47a42016-04-13 16:08:22 -07007164 eics |= BIT_ULL(i);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007165 }
Alexander Duyckfe49f042009-06-04 16:00:09 +00007166 }
7167
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007168 /* Cause software interrupt to ensure rings are cleaned */
Alexander Duyckfe49f042009-06-04 16:00:09 +00007169 ixgbe_irq_rearm_queues(adapter, eics);
Alexander Duyckfe49f042009-06-04 16:00:09 +00007170}
7171
7172/**
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007173 * ixgbe_watchdog_update_link - update the link status
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007174 * @adapter: pointer to the device adapter structure
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07007175 **/
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007176static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007177{
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007178 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007179 u32 link_speed = adapter->link_speed;
7180 bool link_up = adapter->link_up;
Alexander Duyck041441d2012-04-19 17:48:48 +00007181 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007182
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007183 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
7184 return;
7185
7186 if (hw->mac.ops.check_link) {
7187 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007188 } else {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007189 /* always assume link is up, if no check link function */
7190 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
7191 link_up = true;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007192 }
Alexander Duyck041441d2012-04-19 17:48:48 +00007193
7194 if (adapter->ixgbe_ieee_pfc)
7195 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
7196
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00007197 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) {
Alexander Duyck041441d2012-04-19 17:48:48 +00007198 hw->mac.ops.fc_enable(hw);
Alexander Duyck3ebe8fd2012-04-25 04:36:38 +00007199 ixgbe_set_rx_drop_en(adapter);
7200 }
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007201
7202 if (link_up ||
7203 time_after(jiffies, (adapter->link_check_timeout +
7204 IXGBE_TRY_LINK_TIMEOUT))) {
7205 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
7206 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
7207 IXGBE_WRITE_FLUSH(hw);
7208 }
7209
7210 adapter->link_up = link_up;
7211 adapter->link_speed = link_speed;
7212}
7213
Alexander Duyck107d3012012-10-02 00:17:03 +00007214static void ixgbe_update_default_up(struct ixgbe_adapter *adapter)
7215{
7216#ifdef CONFIG_IXGBE_DCB
7217 struct net_device *netdev = adapter->netdev;
7218 struct dcb_app app = {
7219 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
7220 .protocol = 0,
7221 };
7222 u8 up = 0;
7223
7224 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
7225 up = dcb_ieee_getapp_mask(netdev, &app);
7226
7227 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0;
7228#endif
7229}
7230
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007231/**
7232 * ixgbe_watchdog_link_is_up - update netif_carrier status and
7233 * print link up message
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007234 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007235 **/
7236static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
7237{
7238 struct net_device *netdev = adapter->netdev;
7239 struct ixgbe_hw *hw = &adapter->hw;
7240 u32 link_speed = adapter->link_speed;
Mark Rustad454adb02015-07-10 14:19:22 -07007241 const char *speed_str;
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007242 bool flow_rx, flow_tx;
7243
7244 /* only continue if link was previously down */
7245 if (netif_carrier_ok(netdev))
7246 return;
7247
7248 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
7249
7250 switch (hw->mac.type) {
7251 case ixgbe_mac_82598EB: {
7252 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
7253 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
7254 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
7255 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
7256 }
7257 break;
7258 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +00007259 case ixgbe_mac_X550:
7260 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -07007261 case ixgbe_mac_x550em_a:
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007262 case ixgbe_mac_82599EB: {
7263 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
7264 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
7265 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
7266 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
7267 }
7268 break;
7269 default:
7270 flow_tx = false;
7271 flow_rx = false;
7272 break;
7273 }
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007274
Jacob Keller6cb562d2012-12-05 07:24:41 +00007275 adapter->last_rx_ptp_check = jiffies;
7276
Jacob Keller8fecf672013-06-21 08:14:32 +00007277 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00007278 ixgbe_ptp_start_cyclecounter(adapter);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007279
Mark Rustad454adb02015-07-10 14:19:22 -07007280 switch (link_speed) {
7281 case IXGBE_LINK_SPEED_10GB_FULL:
7282 speed_str = "10 Gbps";
7283 break;
Paul Greenwalt06e3f942018-01-11 09:10:51 -05007284 case IXGBE_LINK_SPEED_5GB_FULL:
7285 speed_str = "5 Gbps";
7286 break;
Mark Rustad454adb02015-07-10 14:19:22 -07007287 case IXGBE_LINK_SPEED_2_5GB_FULL:
7288 speed_str = "2.5 Gbps";
7289 break;
7290 case IXGBE_LINK_SPEED_1GB_FULL:
7291 speed_str = "1 Gbps";
7292 break;
7293 case IXGBE_LINK_SPEED_100_FULL:
7294 speed_str = "100 Mbps";
7295 break;
Mark Rustadb3eb4e12016-12-14 11:02:16 -08007296 case IXGBE_LINK_SPEED_10_FULL:
7297 speed_str = "10 Mbps";
7298 break;
Mark Rustad454adb02015-07-10 14:19:22 -07007299 default:
7300 speed_str = "unknown speed";
7301 break;
7302 }
7303 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str,
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007304 ((flow_rx && flow_tx) ? "RX/TX" :
7305 (flow_rx ? "RX" :
7306 (flow_tx ? "TX" : "None"))));
7307
7308 netif_carrier_on(netdev);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007309 ixgbe_check_vf_rate_limit(adapter);
Alexander Duyckbefa2af2012-05-05 05:30:38 +00007310
Emil Tantilovcdc04dc2014-03-20 03:47:53 +00007311 /* enable transmits */
7312 netif_tx_wake_all_queues(adapter->netdev);
7313
Alexander Duyck107d3012012-10-02 00:17:03 +00007314 /* update the default user priority for VFs */
7315 ixgbe_update_default_up(adapter);
7316
Alexander Duyckbefa2af2012-05-05 05:30:38 +00007317 /* ping all the active vfs to let them know link has changed */
7318 ixgbe_ping_all_vfs(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007319}
7320
7321/**
7322 * ixgbe_watchdog_link_is_down - update netif_carrier status and
7323 * print link down message
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007324 * @adapter: pointer to the adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007325 **/
Alexander Duyck581330b2012-02-08 07:51:47 +00007326static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter)
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007327{
7328 struct net_device *netdev = adapter->netdev;
7329 struct ixgbe_hw *hw = &adapter->hw;
7330
7331 adapter->link_up = false;
7332 adapter->link_speed = 0;
7333
7334 /* only continue if link was up previously */
7335 if (!netif_carrier_ok(netdev))
7336 return;
7337
7338 /* poll for SFP+ cable when link is down */
7339 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
7340 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
7341
Jacob Keller8fecf672013-06-21 08:14:32 +00007342 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
Jacob Keller1a71ab22012-08-25 03:54:19 +00007343 ixgbe_ptp_start_cyclecounter(adapter);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007344
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007345 e_info(drv, "NIC Link is Down\n");
7346 netif_carrier_off(netdev);
Alexander Duyckbefa2af2012-05-05 05:30:38 +00007347
7348 /* ping all the active vfs to let them know link has changed */
7349 ixgbe_ping_all_vfs(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007350}
7351
Emil Tantilov07923c12014-08-12 07:12:08 +00007352static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter)
7353{
7354 int i;
7355
7356 for (i = 0; i < adapter->num_tx_queues; i++) {
7357 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
7358
7359 if (tx_ring->next_to_use != tx_ring->next_to_clean)
7360 return true;
7361 }
7362
John Fastabend33fdc822017-04-24 03:30:18 -07007363 for (i = 0; i < adapter->num_xdp_queues; i++) {
7364 struct ixgbe_ring *ring = adapter->xdp_ring[i];
7365
7366 if (ring->next_to_use != ring->next_to_clean)
7367 return true;
7368 }
7369
Emil Tantilov07923c12014-08-12 07:12:08 +00007370 return false;
7371}
7372
7373static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter)
7374{
7375 struct ixgbe_hw *hw = &adapter->hw;
7376 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
7377 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
7378
7379 int i, j;
7380
7381 if (!adapter->num_vfs)
7382 return false;
7383
Don Skidmore9a75a1a2014-11-07 03:53:35 +00007384 /* resetting the PF is only needed for MAC before X550 */
7385 if (hw->mac.type >= ixgbe_mac_X550)
7386 return false;
7387
Emil Tantilov07923c12014-08-12 07:12:08 +00007388 for (i = 0; i < adapter->num_vfs; i++) {
7389 for (j = 0; j < q_per_pool; j++) {
7390 u32 h, t;
7391
7392 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j));
7393 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j));
7394
7395 if (h != t)
7396 return true;
7397 }
7398 }
7399
7400 return false;
7401}
7402
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007403/**
7404 * ixgbe_watchdog_flush_tx - flush queues on link down
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007405 * @adapter: pointer to the device adapter structure
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007406 **/
7407static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
7408{
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007409 if (!netif_carrier_ok(adapter->netdev)) {
Emil Tantilov07923c12014-08-12 07:12:08 +00007410 if (ixgbe_ring_tx_pending(adapter) ||
7411 ixgbe_vf_tx_pending(adapter)) {
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007412 /* We've lost link, so the controller stops DMA,
7413 * but we've got queued Tx work that's never going
7414 * to get done, so reset controller to flush Tx.
7415 * (Do the reset outside of interrupt context).
7416 */
Jacob Keller12ff3f32012-12-01 07:57:17 +00007417 e_warn(drv, "initiating reset to clear Tx work after link loss\n");
Emil Tantilov57ca2a42016-07-29 14:46:31 -07007418 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007419 }
7420 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007421}
7422
Emil Tantilov9079e412014-11-19 03:18:19 +00007423#ifdef CONFIG_PCI_IOV
Emil Tantilov9079e412014-11-19 03:18:19 +00007424static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter)
7425{
7426 struct ixgbe_hw *hw = &adapter->hw;
7427 struct pci_dev *pdev = adapter->pdev;
Mark Rustad988d1302015-10-30 15:29:34 -07007428 unsigned int vf;
Emil Tantilov9079e412014-11-19 03:18:19 +00007429 u32 gpc;
Emil Tantilov9079e412014-11-19 03:18:19 +00007430
7431 if (!(netif_carrier_ok(adapter->netdev)))
7432 return;
7433
7434 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC);
7435 if (gpc) /* If incrementing then no need for the check below */
7436 return;
7437 /* Check to see if a bad DMA write target from an errant or
7438 * malicious VF has caused a PCIe error. If so then we can
7439 * issue a VFLR to the offending VF(s) and then resume without
7440 * requesting a full slot reset.
7441 */
7442
7443 if (!pdev)
7444 return;
7445
Emil Tantilov9079e412014-11-19 03:18:19 +00007446 /* check status reg for all VFs owned by this PF */
Mark Rustad988d1302015-10-30 15:29:34 -07007447 for (vf = 0; vf < adapter->num_vfs; ++vf) {
7448 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
7449 u16 status_reg;
Emil Tantilov9079e412014-11-19 03:18:19 +00007450
Mark Rustad988d1302015-10-30 15:29:34 -07007451 if (!vfdev)
7452 continue;
7453 pci_read_config_word(vfdev, PCI_STATUS, &status_reg);
7454 if (status_reg != IXGBE_FAILED_READ_CFG_WORD &&
7455 status_reg & PCI_STATUS_REC_MASTER_ABORT)
Christoph Hellwig63af8f72017-04-14 21:11:28 +02007456 pcie_flr(vfdev);
Emil Tantilov9079e412014-11-19 03:18:19 +00007457 }
7458}
7459
Greg Rosea985b6c32010-11-18 03:02:52 +00007460static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
7461{
7462 u32 ssvpc;
7463
Greg Rose0584d992012-08-08 00:00:58 +00007464 /* Do not perform spoof check for 82598 or if not in IOV mode */
7465 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
7466 adapter->num_vfs == 0)
Greg Rosea985b6c32010-11-18 03:02:52 +00007467 return;
7468
7469 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
7470
7471 /*
7472 * ssvpc register is cleared on read, if zero then no
7473 * spoofed packets in the last interval.
7474 */
7475 if (!ssvpc)
7476 return;
7477
Emil Tantilovd6ea0752012-08-08 06:28:37 +00007478 e_warn(drv, "%u Spoofed packets detected\n", ssvpc);
Greg Rosea985b6c32010-11-18 03:02:52 +00007479}
Emil Tantilov9079e412014-11-19 03:18:19 +00007480#else
7481static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter)
7482{
7483}
7484
7485static void
7486ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter)
7487{
7488}
7489#endif /* CONFIG_PCI_IOV */
7490
Greg Rosea985b6c32010-11-18 03:02:52 +00007491
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007492/**
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007493 * ixgbe_watchdog_subtask - check and bring link up
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007494 * @adapter: pointer to the device adapter structure
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07007495 **/
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007496static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07007497{
Mark Rustad09f40ae2014-01-14 18:53:11 -08007498 /* if interface is down, removing or resetting, do nothing */
Emil Tantilov7edebf92011-08-27 07:18:37 +00007499 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08007500 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Emil Tantilov7edebf92011-08-27 07:18:37 +00007501 test_bit(__IXGBE_RESETTING, &adapter->state))
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007502 return;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07007503
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007504 ixgbe_watchdog_update_link(adapter);
John Fastabend10eec952010-02-03 14:23:32 +00007505
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007506 if (adapter->link_up)
7507 ixgbe_watchdog_link_is_up(adapter);
7508 else
7509 ixgbe_watchdog_link_is_down(adapter);
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00007510
Emil Tantilov9079e412014-11-19 03:18:19 +00007511 ixgbe_check_for_bad_vf(adapter);
Greg Rosea985b6c32010-11-18 03:02:52 +00007512 ixgbe_spoof_check(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07007513 ixgbe_update_stats(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007514
7515 ixgbe_watchdog_flush_tx(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07007516}
7517
Alexander Duyck70864002011-04-27 09:13:56 +00007518/**
7519 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007520 * @adapter: the ixgbe adapter structure
Alexander Duyck70864002011-04-27 09:13:56 +00007521 **/
7522static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
7523{
7524 struct ixgbe_hw *hw = &adapter->hw;
7525 s32 err;
7526
7527 /* not searching for SFP so there is nothing to do here */
7528 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
7529 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
7530 return;
7531
Mark Rustad58e7cd22015-08-08 16:18:48 -07007532 if (adapter->sfp_poll_time &&
7533 time_after(adapter->sfp_poll_time, jiffies))
7534 return; /* If not yet time to poll for SFP */
7535
Alexander Duyck70864002011-04-27 09:13:56 +00007536 /* someone else is in init, wait until next service event */
7537 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
7538 return;
7539
Mark Rustad58e7cd22015-08-08 16:18:48 -07007540 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1;
7541
Alexander Duyck70864002011-04-27 09:13:56 +00007542 err = hw->phy.ops.identify_sfp(hw);
7543 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
7544 goto sfp_out;
7545
7546 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
7547 /* If no cable is present, then we need to reset
7548 * the next time we find a good cable. */
7549 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
7550 }
7551
7552 /* exit on error */
7553 if (err)
7554 goto sfp_out;
7555
7556 /* exit if reset not needed */
7557 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
7558 goto sfp_out;
7559
7560 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
7561
7562 /*
7563 * A module may be identified correctly, but the EEPROM may not have
7564 * support for that module. setup_sfp() will fail in that case, so
7565 * we should not allow that module to load.
7566 */
7567 if (hw->mac.type == ixgbe_mac_82598EB)
7568 err = hw->phy.ops.reset(hw);
7569 else
7570 err = hw->mac.ops.setup_sfp(hw);
7571
7572 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
7573 goto sfp_out;
7574
7575 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
7576 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
7577
7578sfp_out:
7579 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
7580
7581 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
7582 (adapter->netdev->reg_state == NETREG_REGISTERED)) {
7583 e_dev_err("failed to initialize because an unsupported "
7584 "SFP+ module type was detected.\n");
7585 e_dev_err("Reload the driver after installing a "
7586 "supported module.\n");
7587 unregister_netdev(adapter->netdev);
7588 }
7589}
7590
7591/**
7592 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
Ben Hutchings49ce9c22012-07-10 10:56:00 +00007593 * @adapter: the ixgbe adapter structure
Alexander Duyck70864002011-04-27 09:13:56 +00007594 **/
7595static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
7596{
7597 struct ixgbe_hw *hw = &adapter->hw;
Paul Greenwalt3ead7c22017-10-24 11:00:40 -04007598 u32 cap_speed;
Josh Hay3d292262012-12-15 03:28:19 +00007599 u32 speed;
7600 bool autoneg = false;
Alexander Duyck70864002011-04-27 09:13:56 +00007601
7602 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
7603 return;
7604
7605 /* someone else is in init, wait until next service event */
7606 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
7607 return;
7608
7609 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
7610
Paul Greenwalt3ead7c22017-10-24 11:00:40 -04007611 hw->mac.ops.get_link_capabilities(hw, &cap_speed, &autoneg);
Emil Tantiloved33ff62013-08-30 07:55:24 +00007612
Paul Greenwalt3ead7c22017-10-24 11:00:40 -04007613 /* advertise highest capable link speed */
7614 if (!autoneg && (cap_speed & IXGBE_LINK_SPEED_10GB_FULL))
7615 speed = IXGBE_LINK_SPEED_10GB_FULL;
7616 else
7617 speed = cap_speed & (IXGBE_LINK_SPEED_10GB_FULL |
7618 IXGBE_LINK_SPEED_1GB_FULL);
Emil Tantiloved33ff62013-08-30 07:55:24 +00007619
Alexander Duyck70864002011-04-27 09:13:56 +00007620 if (hw->mac.ops.setup_link)
Josh Hayfd0326f2012-12-15 03:28:30 +00007621 hw->mac.ops.setup_link(hw, speed, true);
Alexander Duyck70864002011-04-27 09:13:56 +00007622
7623 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
7624 adapter->link_check_timeout = jiffies;
7625 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
7626}
7627
7628/**
7629 * ixgbe_service_timer - Timer Call-back
Tony Nguyen5ba643c2017-12-04 11:28:30 -08007630 * @t: pointer to timer_list structure
Alexander Duyck70864002011-04-27 09:13:56 +00007631 **/
Kees Cook26566ea2017-10-16 17:29:35 -07007632static void ixgbe_service_timer(struct timer_list *t)
Alexander Duyck70864002011-04-27 09:13:56 +00007633{
Kees Cook26566ea2017-10-16 17:29:35 -07007634 struct ixgbe_adapter *adapter = from_timer(adapter, t, service_timer);
Alexander Duyck70864002011-04-27 09:13:56 +00007635 unsigned long next_event_offset;
7636
7637 /* poll faster when waiting for link */
7638 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
7639 next_event_offset = HZ / 10;
7640 else
7641 next_event_offset = HZ * 2;
7642
7643 /* Reset the timer */
7644 mod_timer(&adapter->service_timer, next_event_offset + jiffies);
7645
Emil Tantilov9079e412014-11-19 03:18:19 +00007646 ixgbe_service_event_schedule(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +00007647}
7648
Don Skidmore597f22d2015-06-09 16:52:02 -07007649static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter)
7650{
7651 struct ixgbe_hw *hw = &adapter->hw;
7652 u32 status;
7653
7654 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT))
7655 return;
7656
7657 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT;
7658
7659 if (!hw->phy.ops.handle_lasi)
7660 return;
7661
7662 status = hw->phy.ops.handle_lasi(&adapter->hw);
7663 if (status != IXGBE_ERR_OVERTEMP)
7664 return;
7665
7666 e_crit(drv, "%s\n", ixgbe_overheat_msg);
7667}
7668
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007669static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
7670{
Emil Tantilov57ca2a42016-07-29 14:46:31 -07007671 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state))
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007672 return;
7673
Mark Rustad09f40ae2014-01-14 18:53:11 -08007674 /* If we're already down, removing or resetting, just bail */
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007675 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
Mark Rustad09f40ae2014-01-14 18:53:11 -08007676 test_bit(__IXGBE_REMOVING, &adapter->state) ||
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007677 test_bit(__IXGBE_RESETTING, &adapter->state))
7678 return;
7679
7680 ixgbe_dump(adapter);
7681 netdev_err(adapter->netdev, "Reset adapter\n");
7682 adapter->tx_timeout_count++;
7683
John Fastabend8f4c5c92014-01-16 02:30:05 -08007684 rtnl_lock();
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007685 ixgbe_reinit_locked(adapter);
John Fastabend8f4c5c92014-01-16 02:30:05 -08007686 rtnl_unlock();
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007687}
7688
Alexander Duyck70864002011-04-27 09:13:56 +00007689/**
7690 * ixgbe_service_task - manages and runs subtasks
7691 * @work: pointer to work_struct containing our data
7692 **/
7693static void ixgbe_service_task(struct work_struct *work)
7694{
7695 struct ixgbe_adapter *adapter = container_of(work,
7696 struct ixgbe_adapter,
7697 service_task);
Mark Rustadb0483c82014-01-14 18:53:17 -08007698 if (ixgbe_removed(adapter->hw.hw_addr)) {
7699 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
7700 rtnl_lock();
7701 ixgbe_down(adapter);
7702 rtnl_unlock();
7703 }
7704 ixgbe_service_event_complete(adapter);
7705 return;
7706 }
Emil Tantilova21d0822016-08-10 11:19:23 -07007707 if (adapter->flags2 & IXGBE_FLAG2_UDP_TUN_REREG_NEEDED) {
Alexander Duyckb3a49552016-06-16 12:22:19 -07007708 rtnl_lock();
Emil Tantilova21d0822016-08-10 11:19:23 -07007709 adapter->flags2 &= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
Alexander Duyckb3a49552016-06-16 12:22:19 -07007710 udp_tunnel_get_rx_info(adapter->netdev);
7711 rtnl_unlock();
Mark Rustad67359c32015-06-15 11:33:25 -07007712 }
Alexander Duyckc83c6cb2011-04-27 09:21:16 +00007713 ixgbe_reset_subtask(adapter);
Don Skidmore597f22d2015-06-09 16:52:02 -07007714 ixgbe_phy_interrupt_subtask(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +00007715 ixgbe_sfp_detection_subtask(adapter);
7716 ixgbe_sfp_link_config_subtask(adapter);
Alexander Duyckf0f97782011-04-22 04:08:09 +00007717 ixgbe_check_overtemp_subtask(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007718 ixgbe_watchdog_subtask(adapter);
Alexander Duyckd034acf2011-04-27 09:25:34 +00007719 ixgbe_fdir_reinit_subtask(adapter);
Alexander Duyck93c52dd2011-04-22 04:07:54 +00007720 ixgbe_check_hang_subtask(adapter);
Jacob Keller891dc082012-12-05 07:24:46 +00007721
Jacob Keller8fecf672013-06-21 08:14:32 +00007722 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) {
Jacob Keller891dc082012-12-05 07:24:46 +00007723 ixgbe_ptp_overflow_check(adapter);
Jacob Keller6704a3a2018-01-29 15:57:48 -08007724 if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER)
7725 ixgbe_ptp_rx_hang(adapter);
Jacob Keller622a2ef2017-05-03 10:29:04 -07007726 ixgbe_ptp_tx_hang(adapter);
Jacob Keller891dc082012-12-05 07:24:46 +00007727 }
Alexander Duyck70864002011-04-27 09:13:56 +00007728
7729 ixgbe_service_event_complete(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07007730}
7731
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007732static int ixgbe_tso(struct ixgbe_ring *tx_ring,
7733 struct ixgbe_tx_buffer *first,
Shannon Nelson70da6822018-03-16 11:09:07 -07007734 u8 *hdr_len,
7735 struct ixgbe_ipsec_tx_data *itd)
Alexander Duyck897ab152011-05-27 05:31:47 +00007736{
Alexander Duyckb83e3012016-04-14 17:19:31 -04007737 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx;
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007738 struct sk_buff *skb = first->skb;
Alexander Duyckb83e3012016-04-14 17:19:31 -04007739 union {
7740 struct iphdr *v4;
7741 struct ipv6hdr *v6;
7742 unsigned char *hdr;
7743 } ip;
7744 union {
7745 struct tcphdr *tcp;
7746 unsigned char *hdr;
7747 } l4;
7748 u32 paylen, l4_offset;
Shannon Nelson70da6822018-03-16 11:09:07 -07007749 u32 fceof_saidx = 0;
Francois Romieu2049e1f2014-03-30 03:14:27 +00007750 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07007751
Alexander Duyck8f4fbb92012-10-30 06:01:40 +00007752 if (skb->ip_summed != CHECKSUM_PARTIAL)
7753 return 0;
7754
Alexander Duyck897ab152011-05-27 05:31:47 +00007755 if (!skb_is_gso(skb))
7756 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07007757
Francois Romieu2049e1f2014-03-30 03:14:27 +00007758 err = skb_cow_head(skb, 0);
7759 if (err < 0)
7760 return err;
Joe Perches7ca647b2010-09-07 21:35:40 +00007761
Scott Peterson2a205252016-11-18 11:25:42 -08007762 if (eth_p_mpls(first->protocol))
7763 ip.hdr = skb_inner_network_header(skb);
7764 else
7765 ip.hdr = skb_network_header(skb);
Alexander Duyckb83e3012016-04-14 17:19:31 -04007766 l4.hdr = skb_checksum_start(skb);
7767
Alexander Duyck897ab152011-05-27 05:31:47 +00007768 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
7769 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
7770
Alexander Duyckb83e3012016-04-14 17:19:31 -04007771 /* initialize outer IP header fields */
7772 if (ip.v4->version == 4) {
Alexander Duyckc54cdc32016-11-28 10:42:29 -05007773 unsigned char *csum_start = skb_checksum_start(skb);
7774 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4);
Shannon Nelson70da6822018-03-16 11:09:07 -07007775 int len = csum_start - trans_start;
Alexander Duyckc54cdc32016-11-28 10:42:29 -05007776
Alexander Duyckb83e3012016-04-14 17:19:31 -04007777 /* IP header will have to cancel out any data that
Shannon Nelson70da6822018-03-16 11:09:07 -07007778 * is not a part of the outer IP header, so set to
7779 * a reverse csum if needed, else init check to 0.
Alexander Duyckb83e3012016-04-14 17:19:31 -04007780 */
Shannon Nelson70da6822018-03-16 11:09:07 -07007781 ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ?
7782 csum_fold(csum_partial(trans_start,
7783 len, 0)) : 0;
Alexander Duyck897ab152011-05-27 05:31:47 +00007784 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
Alexander Duyckb83e3012016-04-14 17:19:31 -04007785
7786 ip.v4->tot_len = 0;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007787 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
7788 IXGBE_TX_FLAGS_CSUM |
7789 IXGBE_TX_FLAGS_IPV4;
Alexander Duyckb83e3012016-04-14 17:19:31 -04007790 } else {
7791 ip.v6->payload_len = 0;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007792 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
7793 IXGBE_TX_FLAGS_CSUM;
Alexander Duyck897ab152011-05-27 05:31:47 +00007794 }
7795
Alexander Duyckb83e3012016-04-14 17:19:31 -04007796 /* determine offset of inner transport header */
7797 l4_offset = l4.hdr - skb->data;
7798
7799 /* compute length of segmentation header */
7800 *hdr_len = (l4.tcp->doff * 4) + l4_offset;
7801
7802 /* remove payload length from inner checksum */
7803 paylen = skb->len - l4_offset;
7804 csum_replace_by_diff(&l4.tcp->check, htonl(paylen));
Alexander Duyck897ab152011-05-27 05:31:47 +00007805
Alexander Duyck091a6242012-02-08 07:51:01 +00007806 /* update gso size and bytecount with header size */
7807 first->gso_segs = skb_shinfo(skb)->gso_segs;
7808 first->bytecount += (first->gso_segs - 1) * *hdr_len;
7809
Alexander Duyckc44f5f52012-10-30 06:01:45 +00007810 /* mss_l4len_id: use 0 as index for TSO */
Alexander Duyckb83e3012016-04-14 17:19:31 -04007811 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT;
Alexander Duyck897ab152011-05-27 05:31:47 +00007812 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
Alexander Duyck897ab152011-05-27 05:31:47 +00007813
Shannon Nelson70da6822018-03-16 11:09:07 -07007814 fceof_saidx |= itd->sa_idx;
7815 type_tucmd |= itd->flags | itd->trailer_len;
7816
Alexander Duyck897ab152011-05-27 05:31:47 +00007817 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
Alexander Duyckb83e3012016-04-14 17:19:31 -04007818 vlan_macip_lens = l4.hdr - ip.hdr;
7819 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007820 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
Alexander Duyck897ab152011-05-27 05:31:47 +00007821
Shannon Nelson70da6822018-03-16 11:09:07 -07007822 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd,
Alexander Duyck244e27a2012-02-08 07:51:11 +00007823 mss_l4len_idx);
Alexander Duyck897ab152011-05-27 05:31:47 +00007824
7825 return 1;
Joe Perches7ca647b2010-09-07 21:35:40 +00007826}
7827
Alexander Duyck49763de2016-01-13 07:31:11 -08007828static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff *skb)
7829{
7830 unsigned int offset = 0;
7831
7832 ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL);
7833
7834 return offset == skb_checksum_start_offset(skb);
7835}
7836
Alexander Duyck244e27a2012-02-08 07:51:11 +00007837static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
Shannon Nelson59259472017-12-19 16:00:00 -08007838 struct ixgbe_tx_buffer *first,
7839 struct ixgbe_ipsec_tx_data *itd)
Auke Kok9a799d72007-09-15 14:07:45 -07007840{
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00007841 struct sk_buff *skb = first->skb;
Alexander Duyck897ab152011-05-27 05:31:47 +00007842 u32 vlan_macip_lens = 0;
Shannon Nelson59259472017-12-19 16:00:00 -08007843 u32 fceof_saidx = 0;
Alexander Duyck897ab152011-05-27 05:31:47 +00007844 u32 type_tucmd = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07007845
Alexander Duyck897ab152011-05-27 05:31:47 +00007846 if (skb->ip_summed != CHECKSUM_PARTIAL) {
Alexander Duyck49763de2016-01-13 07:31:11 -08007847csum_failed:
7848 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN |
7849 IXGBE_TX_FLAGS_CC)))
Alexander Duyck472148c2012-11-07 02:34:28 +00007850 return;
Alexander Duyck49763de2016-01-13 07:31:11 -08007851 goto no_csum;
Auke Kok9a799d72007-09-15 14:07:45 -07007852 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07007853
Alexander Duyck49763de2016-01-13 07:31:11 -08007854 switch (skb->csum_offset) {
7855 case offsetof(struct tcphdr, check):
7856 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
7857 /* fall through */
7858 case offsetof(struct udphdr, check):
7859 break;
7860 case offsetof(struct sctphdr, checksum):
7861 /* validate that this is actually an SCTP request */
7862 if (((first->protocol == htons(ETH_P_IP)) &&
7863 (ip_hdr(skb)->protocol == IPPROTO_SCTP)) ||
7864 ((first->protocol == htons(ETH_P_IPV6)) &&
7865 ixgbe_ipv6_csum_is_sctp(skb))) {
7866 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP;
7867 break;
7868 }
7869 /* fall through */
7870 default:
7871 skb_checksum_help(skb);
7872 goto csum_failed;
7873 }
7874
7875 /* update TX checksum flag */
7876 first->tx_flags |= IXGBE_TX_FLAGS_CSUM;
7877 vlan_macip_lens = skb_checksum_start_offset(skb) -
7878 skb_network_offset(skb);
Mark Rustad36a92d72015-11-18 09:21:28 -08007879no_csum:
Alexander Duyck244e27a2012-02-08 07:51:11 +00007880 /* vlan_macip_lens: MACLEN, VLAN tag */
Alexander Duyck49763de2016-01-13 07:31:11 -08007881 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007882 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
Alexander Duyck897ab152011-05-27 05:31:47 +00007883
Shannon Nelson871dd092018-03-16 11:09:05 -07007884 fceof_saidx |= itd->sa_idx;
7885 type_tucmd |= itd->flags | itd->trailer_len;
Shannon Nelson59259472017-12-19 16:00:00 -08007886
7887 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0);
Auke Kok9a799d72007-09-15 14:07:45 -07007888}
7889
Alexander Duyck472148c2012-11-07 02:34:28 +00007890#define IXGBE_SET_FLAG(_input, _flag, _result) \
7891 ((_flag <= _result) ? \
7892 ((u32)(_input & _flag) * (_result / _flag)) : \
7893 ((u32)(_input & _flag) / (_flag / _result)))
7894
7895static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
Alexander Duyckd3d00232011-07-15 02:31:25 +00007896{
7897 /* set type for advanced descriptor with frame checksum insertion */
Alexander Duyck472148c2012-11-07 02:34:28 +00007898 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA |
7899 IXGBE_ADVTXD_DCMD_DEXT |
7900 IXGBE_ADVTXD_DCMD_IFCS;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007901
7902 /* set HW vlan bit if vlan is present */
Alexander Duyck472148c2012-11-07 02:34:28 +00007903 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN,
7904 IXGBE_ADVTXD_DCMD_VLE);
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00007905
Alexander Duyckd3d00232011-07-15 02:31:25 +00007906 /* set segmentation enable bits for TSO/FSO */
Alexander Duyck472148c2012-11-07 02:34:28 +00007907 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO,
7908 IXGBE_ADVTXD_DCMD_TSE);
7909
7910 /* set timestamp bit if present */
7911 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP,
7912 IXGBE_ADVTXD_MAC_TSTAMP);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007913
Alexander Duyck62748b72012-07-20 08:09:01 +00007914 /* insert frame checksum */
Alexander Duyck472148c2012-11-07 02:34:28 +00007915 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS);
Alexander Duyck62748b72012-07-20 08:09:01 +00007916
Alexander Duyckd3d00232011-07-15 02:31:25 +00007917 return cmd_type;
7918}
7919
Alexander Duyck729739b2012-02-08 07:51:06 +00007920static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc,
7921 u32 tx_flags, unsigned int paylen)
Alexander Duyckd3d00232011-07-15 02:31:25 +00007922{
Alexander Duyck472148c2012-11-07 02:34:28 +00007923 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT;
Alexander Duyckd3d00232011-07-15 02:31:25 +00007924
7925 /* enable L4 checksum for TSO and TX checksum offload */
Alexander Duyck472148c2012-11-07 02:34:28 +00007926 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7927 IXGBE_TX_FLAGS_CSUM,
7928 IXGBE_ADVTXD_POPTS_TXSM);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007929
Shannon Nelson59259472017-12-19 16:00:00 -08007930 /* enable IPv4 checksum for TSO */
Alexander Duyck472148c2012-11-07 02:34:28 +00007931 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7932 IXGBE_TX_FLAGS_IPV4,
7933 IXGBE_ADVTXD_POPTS_IXSM);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007934
Shannon Nelson59259472017-12-19 16:00:00 -08007935 /* enable IPsec */
7936 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7937 IXGBE_TX_FLAGS_IPSEC,
7938 IXGBE_ADVTXD_POPTS_IPSEC);
7939
Alexander Duyck7f9643f2011-06-29 05:43:27 +00007940 /*
7941 * Check Context must be set if Tx switch is enabled, which it
7942 * always is for case where virtual functions are running
7943 */
Alexander Duyck472148c2012-11-07 02:34:28 +00007944 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7945 IXGBE_TX_FLAGS_CC,
7946 IXGBE_ADVTXD_CC);
Alexander Duyck7f9643f2011-06-29 05:43:27 +00007947
Alexander Duyck472148c2012-11-07 02:34:28 +00007948 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007949}
7950
Daniel Borkmann2367a172014-08-26 19:34:18 +02007951static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7952{
7953 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
7954
7955 /* Herbert's original patch had:
7956 * smp_mb__after_netif_stop_queue();
7957 * but since that doesn't exist yet, just open code it.
7958 */
7959 smp_mb();
7960
7961 /* We need to check again in a case another CPU has just
7962 * made room available.
7963 */
7964 if (likely(ixgbe_desc_unused(tx_ring) < size))
7965 return -EBUSY;
7966
7967 /* A reprieve! - use start_queue because it doesn't call schedule */
7968 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
7969 ++tx_ring->tx_stats.restart_queue;
7970 return 0;
7971}
7972
7973static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7974{
7975 if (likely(ixgbe_desc_unused(tx_ring) >= size))
7976 return 0;
7977
7978 return __ixgbe_maybe_stop_tx(tx_ring, size);
7979}
7980
Alexander Duyckd3d00232011-07-15 02:31:25 +00007981#define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
7982 IXGBE_TXD_CMD_RS)
7983
Jacob Keller5fef1242017-05-03 10:28:56 -07007984static int ixgbe_tx_map(struct ixgbe_ring *tx_ring,
7985 struct ixgbe_tx_buffer *first,
7986 const u8 hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07007987{
Alexander Duyck729739b2012-02-08 07:51:06 +00007988 struct sk_buff *skb = first->skb;
7989 struct ixgbe_tx_buffer *tx_buffer;
7990 union ixgbe_adv_tx_desc *tx_desc;
Alexander Duyckec718252012-10-30 06:01:55 +00007991 struct skb_frag_struct *frag;
7992 dma_addr_t dma;
7993 unsigned int data_len, size;
Alexander Duyck244e27a2012-02-08 07:51:11 +00007994 u32 tx_flags = first->tx_flags;
Alexander Duyck472148c2012-11-07 02:34:28 +00007995 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags);
Alexander Duyckd3d00232011-07-15 02:31:25 +00007996 u16 i = tx_ring->next_to_use;
Auke Kok9a799d72007-09-15 14:07:45 -07007997
Alexander Duyck729739b2012-02-08 07:51:06 +00007998 tx_desc = IXGBE_TX_DESC(tx_ring, i);
7999
Alexander Duyckec718252012-10-30 06:01:55 +00008000 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len);
8001
8002 size = skb_headlen(skb);
8003 data_len = skb->data_len;
Alexander Duyck729739b2012-02-08 07:51:06 +00008004
Alexander Duyckd3d00232011-07-15 02:31:25 +00008005#ifdef IXGBE_FCOE
8006 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
Alexander Duyck729739b2012-02-08 07:51:06 +00008007 if (data_len < sizeof(struct fcoe_crc_eof)) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00008008 size -= sizeof(struct fcoe_crc_eof) - data_len;
8009 data_len = 0;
Alexander Duyck729739b2012-02-08 07:51:06 +00008010 } else {
8011 data_len -= sizeof(struct fcoe_crc_eof);
Alexander Duyck44df32c2009-03-31 21:34:23 +00008012 }
Auke Kok9a799d72007-09-15 14:07:45 -07008013 }
8014
Alexander Duyckd3d00232011-07-15 02:31:25 +00008015#endif
Alexander Duyck729739b2012-02-08 07:51:06 +00008016 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008017
Alexander Duyckec718252012-10-30 06:01:55 +00008018 tx_buffer = first;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008019
Alexander Duyckec718252012-10-30 06:01:55 +00008020 for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
8021 if (dma_mapping_error(tx_ring->dev, dma))
8022 goto dma_error;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008023
Alexander Duyckec718252012-10-30 06:01:55 +00008024 /* record length, and DMA address */
8025 dma_unmap_len_set(tx_buffer, len, size);
8026 dma_unmap_addr_set(tx_buffer, dma, dma);
8027
8028 tx_desc->read.buffer_addr = cpu_to_le64(dma);
8029
Alexander Duyck729739b2012-02-08 07:51:06 +00008030 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) {
Alexander Duyckd3d00232011-07-15 02:31:25 +00008031 tx_desc->read.cmd_type_len =
Alexander Duyck472148c2012-11-07 02:34:28 +00008032 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008033
Alexander Duyckd3d00232011-07-15 02:31:25 +00008034 i++;
Alexander Duyck729739b2012-02-08 07:51:06 +00008035 tx_desc++;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008036 if (i == tx_ring->count) {
Alexander Duycke4f74022012-01-31 02:59:44 +00008037 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008038 i = 0;
8039 }
Alexander Duyckec718252012-10-30 06:01:55 +00008040 tx_desc->read.olinfo_status = 0;
Alexander Duyck729739b2012-02-08 07:51:06 +00008041
8042 dma += IXGBE_MAX_DATA_PER_TXD;
8043 size -= IXGBE_MAX_DATA_PER_TXD;
8044
8045 tx_desc->read.buffer_addr = cpu_to_le64(dma);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008046 }
8047
Alexander Duyck729739b2012-02-08 07:51:06 +00008048 if (likely(!data_len))
8049 break;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008050
Alexander Duyck472148c2012-11-07 02:34:28 +00008051 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008052
Alexander Duyck729739b2012-02-08 07:51:06 +00008053 i++;
8054 tx_desc++;
8055 if (i == tx_ring->count) {
8056 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
8057 i = 0;
8058 }
Alexander Duyckec718252012-10-30 06:01:55 +00008059 tx_desc->read.olinfo_status = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07008060
Alexander Duyckd3d00232011-07-15 02:31:25 +00008061#ifdef IXGBE_FCOE
Eric Dumazet9e903e02011-10-18 21:00:24 +00008062 size = min_t(unsigned int, data_len, skb_frag_size(frag));
Alexander Duyckd3d00232011-07-15 02:31:25 +00008063#else
Eric Dumazet9e903e02011-10-18 21:00:24 +00008064 size = skb_frag_size(frag);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008065#endif
8066 data_len -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07008067
Alexander Duyck729739b2012-02-08 07:51:06 +00008068 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
8069 DMA_TO_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07008070
Alexander Duyck729739b2012-02-08 07:51:06 +00008071 tx_buffer = &tx_ring->tx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07008072 }
Alexander Duyck44df32c2009-03-31 21:34:23 +00008073
Alexander Duyck729739b2012-02-08 07:51:06 +00008074 /* write last descriptor with RS and EOP bits */
Alexander Duyck472148c2012-11-07 02:34:28 +00008075 cmd_type |= size | IXGBE_TXD_CMD;
8076 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
Alexander Duyckd3d00232011-07-15 02:31:25 +00008077
Alexander Duyck091a6242012-02-08 07:51:01 +00008078 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
Alexander Duyckb2d96e02012-02-07 08:14:33 +00008079
Alexander Duyckd3d00232011-07-15 02:31:25 +00008080 /* set the timestamp */
8081 first->time_stamp = jiffies;
Auke Kok9a799d72007-09-15 14:07:45 -07008082
8083 /*
Alexander Duyck729739b2012-02-08 07:51:06 +00008084 * Force memory writes to complete before letting h/w know there
8085 * are new descriptors to fetch. (Only applicable for weak-ordered
8086 * memory model archs, such as IA-64).
8087 *
8088 * We also need this memory barrier to make certain all of the
8089 * status bits have been updated before next_to_watch is written.
Auke Kok9a799d72007-09-15 14:07:45 -07008090 */
8091 wmb();
8092
Alexander Duyckd3d00232011-07-15 02:31:25 +00008093 /* set next_to_watch value indicating a packet is present */
8094 first->next_to_watch = tx_desc;
8095
Alexander Duyck729739b2012-02-08 07:51:06 +00008096 i++;
8097 if (i == tx_ring->count)
8098 i = 0;
8099
8100 tx_ring->next_to_use = i;
8101
Daniel Borkmann2367a172014-08-26 19:34:18 +02008102 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
8103
8104 if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
Alexander Duyckad435ec2014-11-14 00:56:35 +00008105 writel(i, tx_ring->tail);
8106
8107 /* we need this if more than one processor can write to our tail
8108 * at a time, it synchronizes IO on IA64/Altix systems
8109 */
8110 mmiowb();
Daniel Borkmann9c938cd2014-08-24 15:42:16 +02008111 }
Daniel Borkmann2367a172014-08-26 19:34:18 +02008112
Jacob Keller5fef1242017-05-03 10:28:56 -07008113 return 0;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008114dma_error:
Alexander Duyck729739b2012-02-08 07:51:06 +00008115 dev_err(tx_ring->dev, "TX DMA map failed\n");
Alexander Duyckd3d00232011-07-15 02:31:25 +00008116
8117 /* clear dma mappings for failed tx_buffer_info map */
Alexander Duyck069db9c2017-10-19 17:07:13 -04008118 for (;;) {
8119 tx_buffer = &tx_ring->tx_buffer_info[i];
Alexander Duyckffed21b2017-01-17 08:37:29 -08008120 if (dma_unmap_len(tx_buffer, len))
8121 dma_unmap_page(tx_ring->dev,
8122 dma_unmap_addr(tx_buffer, dma),
8123 dma_unmap_len(tx_buffer, len),
8124 DMA_TO_DEVICE);
8125 dma_unmap_len_set(tx_buffer, len, 0);
Alexander Duyck069db9c2017-10-19 17:07:13 -04008126 if (tx_buffer == first)
8127 break;
8128 if (i == 0)
Alexander Duyckffed21b2017-01-17 08:37:29 -08008129 i += tx_ring->count;
Alexander Duyck069db9c2017-10-19 17:07:13 -04008130 i--;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008131 }
8132
Alexander Duyckffed21b2017-01-17 08:37:29 -08008133 dev_kfree_skb_any(first->skb);
8134 first->skb = NULL;
8135
Alexander Duyckd3d00232011-07-15 02:31:25 +00008136 tx_ring->next_to_use = i;
Jacob Keller5fef1242017-05-03 10:28:56 -07008137
8138 return -1;
Auke Kok9a799d72007-09-15 14:07:45 -07008139}
8140
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00008141static void ixgbe_atr(struct ixgbe_ring *ring,
Alexander Duyck244e27a2012-02-08 07:51:11 +00008142 struct ixgbe_tx_buffer *first)
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008143{
Alexander Duyck69830522011-01-06 14:29:58 +00008144 struct ixgbe_q_vector *q_vector = ring->q_vector;
8145 union ixgbe_atr_hash_dword input = { .dword = 0 };
8146 union ixgbe_atr_hash_dword common = { .dword = 0 };
8147 union {
8148 unsigned char *network;
8149 struct iphdr *ipv4;
8150 struct ipv6hdr *ipv6;
8151 } hdr;
Alexander Duyckee9e0f02010-11-16 19:27:01 -08008152 struct tcphdr *th;
Alexander Duycke2873d42016-01-25 19:39:40 -08008153 unsigned int hlen;
Mark Rustad67359c32015-06-15 11:33:25 -07008154 struct sk_buff *skb;
Alexander Duyck905e4a42011-01-06 14:29:57 +00008155 __be16 vlan_id;
Alexander Duycke2873d42016-01-25 19:39:40 -08008156 int l4_proto;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008157
Alexander Duyck69830522011-01-06 14:29:58 +00008158 /* if ring doesn't have a interrupt vector, cannot perform ATR */
8159 if (!q_vector)
Guillaume Gaudonvilled3ead242010-06-29 18:29:00 +00008160 return;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008161
Alexander Duyck69830522011-01-06 14:29:58 +00008162 /* do nothing if sampling is disabled */
8163 if (!ring->atr_sample_rate)
8164 return;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008165
Alexander Duyck69830522011-01-06 14:29:58 +00008166 ring->atr_count++;
8167
Alexander Duycke2873d42016-01-25 19:39:40 -08008168 /* currently only IPv4/IPv6 with TCP is supported */
8169 if ((first->protocol != htons(ETH_P_IP)) &&
8170 (first->protocol != htons(ETH_P_IPV6)))
8171 return;
8172
Alexander Duyck69830522011-01-06 14:29:58 +00008173 /* snag network header to get L4 type and address */
Mark Rustad67359c32015-06-15 11:33:25 -07008174 skb = first->skb;
8175 hdr.network = skb_network_header(skb);
Sowmini Varadhan9f3c7502016-10-24 15:36:39 -07008176 if (unlikely(hdr.network <= skb->data))
8177 return;
Alexander Duyck9f12df92016-01-25 19:36:29 -08008178 if (skb->encapsulation &&
8179 first->protocol == htons(ETH_P_IP) &&
Sowmini Varadhan52028822016-10-24 15:36:38 -07008180 hdr.ipv4->protocol == IPPROTO_UDP) {
Mark Rustad67359c32015-06-15 11:33:25 -07008181 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyck69830522011-01-06 14:29:58 +00008182
Sowmini Varadhan9f3c7502016-10-24 15:36:39 -07008183 if (unlikely(skb_tail_pointer(skb) < hdr.network +
8184 VXLAN_HEADROOM))
8185 return;
8186
Alexander Duyck9f12df92016-01-25 19:36:29 -08008187 /* verify the port is recognized as VXLAN */
8188 if (adapter->vxlan_port &&
Alexander Duycke2873d42016-01-25 19:39:40 -08008189 udp_hdr(skb)->dest == adapter->vxlan_port)
Alexander Duyck9f12df92016-01-25 19:36:29 -08008190 hdr.network = skb_inner_network_header(skb);
Emil Tantilova21d0822016-08-10 11:19:23 -07008191
8192 if (adapter->geneve_port &&
8193 udp_hdr(skb)->dest == adapter->geneve_port)
8194 hdr.network = skb_inner_network_header(skb);
Mark Rustade19dcde2015-12-09 14:55:37 -08008195 }
8196
Sowmini Varadhan9f3c7502016-10-24 15:36:39 -07008197 /* Make sure we have at least [minimum IPv4 header + TCP]
8198 * or [IPv6 header] bytes
8199 */
8200 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40))
8201 return;
8202
Mark Rustade19dcde2015-12-09 14:55:37 -08008203 /* Currently only IPv4/IPv6 with TCP is supported */
8204 switch (hdr.ipv4->version) {
8205 case IPVERSION:
Alexander Duycke2873d42016-01-25 19:39:40 -08008206 /* access ihl as u8 to avoid unaligned access on ia64 */
8207 hlen = (hdr.network[0] & 0x0F) << 2;
8208 l4_proto = hdr.ipv4->protocol;
Mark Rustade19dcde2015-12-09 14:55:37 -08008209 break;
8210 case 6:
Alexander Duycke2873d42016-01-25 19:39:40 -08008211 hlen = hdr.network - skb->data;
8212 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL);
8213 hlen -= hdr.network - skb->data;
Mark Rustade19dcde2015-12-09 14:55:37 -08008214 break;
8215 default:
8216 return;
Mark Rustad67359c32015-06-15 11:33:25 -07008217 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008218
Alexander Duycke2873d42016-01-25 19:39:40 -08008219 if (l4_proto != IPPROTO_TCP)
8220 return;
8221
Sowmini Varadhan9f3c7502016-10-24 15:36:39 -07008222 if (unlikely(skb_tail_pointer(skb) < hdr.network +
8223 hlen + sizeof(struct tcphdr)))
8224 return;
8225
Alexander Duycke2873d42016-01-25 19:39:40 -08008226 th = (struct tcphdr *)(hdr.network + hlen);
8227
8228 /* skip this packet since the socket is closing */
8229 if (th->fin)
Alexander Duyck69830522011-01-06 14:29:58 +00008230 return;
8231
8232 /* sample on all syn packets or once every atr sample count */
8233 if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
8234 return;
8235
8236 /* reset sample count */
8237 ring->atr_count = 0;
8238
Alexander Duyck244e27a2012-02-08 07:51:11 +00008239 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
Alexander Duyck69830522011-01-06 14:29:58 +00008240
8241 /*
8242 * src and dst are inverted, think how the receiver sees them
8243 *
8244 * The input is broken into two sections, a non-compressed section
8245 * containing vm_pool, vlan_id, and flow_type. The rest of the data
8246 * is XORed together and stored in the compressed dword.
8247 */
8248 input.formatted.vlan_id = vlan_id;
8249
8250 /*
8251 * since src port and flex bytes occupy the same word XOR them together
8252 * and write the value to source port portion of compressed dword
8253 */
Alexander Duyck244e27a2012-02-08 07:51:11 +00008254 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN))
Joe Perchesa1108ff2014-03-13 05:19:25 +00008255 common.port.src ^= th->dest ^ htons(ETH_P_8021Q);
Alexander Duyck69830522011-01-06 14:29:58 +00008256 else
Alexander Duyck244e27a2012-02-08 07:51:11 +00008257 common.port.src ^= th->dest ^ first->protocol;
Alexander Duyck69830522011-01-06 14:29:58 +00008258 common.port.dst ^= th->source;
8259
Mark Rustade19dcde2015-12-09 14:55:37 -08008260 switch (hdr.ipv4->version) {
8261 case IPVERSION:
Alexander Duyck69830522011-01-06 14:29:58 +00008262 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
8263 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
Mark Rustade19dcde2015-12-09 14:55:37 -08008264 break;
8265 case 6:
Alexander Duyck69830522011-01-06 14:29:58 +00008266 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
8267 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
8268 hdr.ipv6->saddr.s6_addr32[1] ^
8269 hdr.ipv6->saddr.s6_addr32[2] ^
8270 hdr.ipv6->saddr.s6_addr32[3] ^
8271 hdr.ipv6->daddr.s6_addr32[0] ^
8272 hdr.ipv6->daddr.s6_addr32[1] ^
8273 hdr.ipv6->daddr.s6_addr32[2] ^
8274 hdr.ipv6->daddr.s6_addr32[3];
Mark Rustade19dcde2015-12-09 14:55:37 -08008275 break;
8276 default:
8277 break;
Alexander Duyck69830522011-01-06 14:29:58 +00008278 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008279
Alexander Duyck9f12df92016-01-25 19:36:29 -08008280 if (hdr.network != skb_network_header(skb))
Mark Rustad67359c32015-06-15 11:33:25 -07008281 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK;
Mark Rustad67359c32015-06-15 11:33:25 -07008282
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008283 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
Alexander Duyck69830522011-01-06 14:29:58 +00008284 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
8285 input, common, ring->queue_index);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008286}
8287
Jason Wangf663dd92014-01-10 16:18:26 +08008288static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
Daniel Borkmann99932d42014-02-16 15:55:20 +01008289 void *accel_priv, select_queue_fallback_t fallback)
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07008290{
Jason Wangf663dd92014-01-10 16:18:26 +08008291 struct ixgbe_fwd_adapter *fwd_adapter = accel_priv;
Alexander Duyck97488bd2013-01-12 06:33:37 +00008292 struct ixgbe_adapter *adapter;
Alexander Duyck97488bd2013-01-12 06:33:37 +00008293 int txq;
Alexander Duyck16be45b2017-11-22 10:57:23 -08008294#ifdef IXGBE_FCOE
8295 struct ixgbe_ring_feature *f;
Jason Wangf663dd92014-01-10 16:18:26 +08008296#endif
8297
Alexander Duyck16be45b2017-11-22 10:57:23 -08008298 if (fwd_adapter) {
8299 adapter = netdev_priv(dev);
8300 txq = reciprocal_scale(skb_get_hash(skb),
8301 adapter->num_rx_queues_per_pool);
8302
8303 return txq + fwd_adapter->tx_base_queue;
8304 }
Jason Wangf663dd92014-01-10 16:18:26 +08008305
8306#ifdef IXGBE_FCOE
Hao Zheng5e09a102010-11-11 13:47:59 +00008307
Alexander Duyck97488bd2013-01-12 06:33:37 +00008308 /*
8309 * only execute the code below if protocol is FCoE
8310 * or FIP and we have FCoE enabled on the adapter
8311 */
8312 switch (vlan_get_protocol(skb)) {
Joe Perchesa1108ff2014-03-13 05:19:25 +00008313 case htons(ETH_P_FCOE):
8314 case htons(ETH_P_FIP):
Alexander Duyck97488bd2013-01-12 06:33:37 +00008315 adapter = netdev_priv(dev);
Alexander Duyckc0876632012-05-10 00:01:46 +00008316
Alexander Duyck97488bd2013-01-12 06:33:37 +00008317 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
8318 break;
Tony Nguyen93df9462017-05-31 04:43:47 -07008319 /* fall through */
Alexander Duyck97488bd2013-01-12 06:33:37 +00008320 default:
Daniel Borkmann99932d42014-02-16 15:55:20 +01008321 return fallback(dev, skb);
Krishna Kumarfdd3d632010-02-03 13:13:10 +00008322 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00008323
Alexander Duyck97488bd2013-01-12 06:33:37 +00008324 f = &adapter->ring_feature[RING_F_FCOE];
8325
8326 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) :
8327 smp_processor_id();
8328
8329 while (txq >= f->indices)
8330 txq -= f->indices;
8331
8332 return txq + f->offset;
Jason Wangf663dd92014-01-10 16:18:26 +08008333#else
Daniel Borkmann99932d42014-02-16 15:55:20 +01008334 return fallback(dev, skb);
Jason Wangf663dd92014-01-10 16:18:26 +08008335#endif
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07008336}
8337
John Fastabend33fdc822017-04-24 03:30:18 -07008338static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter *adapter,
8339 struct xdp_buff *xdp)
8340{
8341 struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()];
8342 struct ixgbe_tx_buffer *tx_buffer;
8343 union ixgbe_adv_tx_desc *tx_desc;
8344 u32 len, cmd_type;
8345 dma_addr_t dma;
8346 u16 i;
8347
8348 len = xdp->data_end - xdp->data;
8349
8350 if (unlikely(!ixgbe_desc_unused(ring)))
8351 return IXGBE_XDP_CONSUMED;
8352
8353 dma = dma_map_single(ring->dev, xdp->data, len, DMA_TO_DEVICE);
8354 if (dma_mapping_error(ring->dev, dma))
8355 return IXGBE_XDP_CONSUMED;
8356
8357 /* record the location of the first descriptor for this packet */
8358 tx_buffer = &ring->tx_buffer_info[ring->next_to_use];
8359 tx_buffer->bytecount = len;
8360 tx_buffer->gso_segs = 1;
8361 tx_buffer->protocol = 0;
8362
8363 i = ring->next_to_use;
8364 tx_desc = IXGBE_TX_DESC(ring, i);
8365
8366 dma_unmap_len_set(tx_buffer, len, len);
8367 dma_unmap_addr_set(tx_buffer, dma, dma);
8368 tx_buffer->data = xdp->data;
8369 tx_desc->read.buffer_addr = cpu_to_le64(dma);
8370
8371 /* put descriptor type bits */
8372 cmd_type = IXGBE_ADVTXD_DTYP_DATA |
8373 IXGBE_ADVTXD_DCMD_DEXT |
8374 IXGBE_ADVTXD_DCMD_IFCS;
8375 cmd_type |= len | IXGBE_TXD_CMD;
8376 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
8377 tx_desc->read.olinfo_status =
8378 cpu_to_le32(len << IXGBE_ADVTXD_PAYLEN_SHIFT);
8379
John Fastabend7379f972017-03-28 09:47:03 -07008380 /* Avoid any potential race with xdp_xmit and cleanup */
8381 smp_wmb();
John Fastabend33fdc822017-04-24 03:30:18 -07008382
8383 /* set next_to_watch value indicating a packet is present */
8384 i++;
8385 if (i == ring->count)
8386 i = 0;
8387
8388 tx_buffer->next_to_watch = tx_desc;
8389 ring->next_to_use = i;
8390
John Fastabend33fdc822017-04-24 03:30:18 -07008391 return IXGBE_XDP_TX;
8392}
8393
Alexander Duyckfc77dc32010-11-16 19:26:51 -08008394netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
Alexander Duyck84418e32010-08-19 13:40:54 +00008395 struct ixgbe_adapter *adapter,
8396 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07008397{
Alexander Duyckd3d00232011-07-15 02:31:25 +00008398 struct ixgbe_tx_buffer *first;
Yi Zou5f715822009-12-03 11:32:44 +00008399 int tso;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008400 u32 tx_flags = 0;
Alexander Duycka535c302011-05-27 05:31:52 +00008401 unsigned short f;
Alexander Duycka535c302011-05-27 05:31:52 +00008402 u16 count = TXD_USE_COUNT(skb_headlen(skb));
Shannon Nelson59259472017-12-19 16:00:00 -08008403 struct ixgbe_ipsec_tx_data ipsec_tx = { 0 };
Alexander Duyck66f32a82011-06-29 05:43:22 +00008404 __be16 protocol = skb->protocol;
Alexander Duyck63544e92011-05-27 05:31:42 +00008405 u8 hdr_len = 0;
Hao Zheng5e09a102010-11-11 13:47:59 +00008406
Alexander Duycka535c302011-05-27 05:31:52 +00008407 /*
8408 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
Alexander Duyck24ddd962012-02-10 02:08:32 +00008409 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
Alexander Duycka535c302011-05-27 05:31:52 +00008410 * + 2 desc gap to keep tail from touching head,
8411 * + 1 desc for context descriptor,
8412 * otherwise try next time
8413 */
Alexander Duycka535c302011-05-27 05:31:52 +00008414 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
8415 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
Alexander Duyck7f661622013-02-09 01:19:55 +00008416
Alexander Duycka535c302011-05-27 05:31:52 +00008417 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) {
8418 tx_ring->tx_stats.tx_busy++;
8419 return NETDEV_TX_BUSY;
8420 }
8421
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00008422 /* record the location of the first descriptor for this packet */
8423 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
8424 first->skb = skb;
Alexander Duyck091a6242012-02-08 07:51:01 +00008425 first->bytecount = skb->len;
8426 first->gso_segs = 1;
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00008427
Alexander Duyck66f32a82011-06-29 05:43:22 +00008428 /* if we have a HW VLAN tag being added default to the HW one */
Jiri Pirkodf8a39d2015-01-13 17:13:44 +01008429 if (skb_vlan_tag_present(skb)) {
8430 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00008431 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
8432 /* else if it is a SW VLAN check the next protocol and store the tag */
Joe Perchesa1108ff2014-03-13 05:19:25 +00008433 } else if (protocol == htons(ETH_P_8021Q)) {
Alexander Duyck66f32a82011-06-29 05:43:22 +00008434 struct vlan_hdr *vhdr, _vhdr;
8435 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr);
8436 if (!vhdr)
8437 goto out_drop;
8438
Alexander Duyck9e0c5642012-02-08 07:49:33 +00008439 tx_flags |= ntohs(vhdr->h_vlan_TCI) <<
8440 IXGBE_TX_FLAGS_VLAN_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00008441 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN;
Auke Kok9a799d72007-09-15 14:07:45 -07008442 }
Toshiaki Makita02136682015-01-29 20:37:09 +09008443 protocol = vlan_get_protocol(skb);
Yi Zoueacd73f2009-05-13 13:11:06 +00008444
Mark Rustadd5234932014-08-09 07:02:09 +00008445 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
Jacob Keller4cc74c02017-05-03 10:29:00 -07008446 adapter->ptp_clock) {
8447 if (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,
8448 &adapter->state)) {
8449 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
8450 tx_flags |= IXGBE_TX_FLAGS_TSTAMP;
Jacob Keller891dc082012-12-05 07:24:46 +00008451
Jacob Keller4cc74c02017-05-03 10:29:00 -07008452 /* schedule check for Tx timestamp */
8453 adapter->ptp_tx_skb = skb_get(skb);
8454 adapter->ptp_tx_start = jiffies;
8455 schedule_work(&adapter->ptp_tx_work);
8456 } else {
8457 adapter->tx_hwtstamp_skipped++;
8458 }
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008459 }
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008460
Jakub Kicinskiff29a862014-03-15 14:55:16 +00008461 skb_tx_timestamp(skb);
8462
Alexander Duyck9e0c5642012-02-08 07:49:33 +00008463#ifdef CONFIG_PCI_IOV
8464 /*
8465 * Use the l2switch_enable flag - would be false if the DMA
8466 * Tx switch had been disabled.
8467 */
8468 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
Alexander Duyck472148c2012-11-07 02:34:28 +00008469 tx_flags |= IXGBE_TX_FLAGS_CC;
Alexander Duyck9e0c5642012-02-08 07:49:33 +00008470
8471#endif
John Fastabend32701dc2011-09-27 03:51:56 +00008472 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
Alexander Duyck66f32a82011-06-29 05:43:22 +00008473 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
Alexander Duyck09dca472011-07-20 00:09:10 +00008474 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) ||
8475 (skb->priority != TC_PRIO_CONTROL))) {
Alexander Duyck66f32a82011-06-29 05:43:22 +00008476 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
John Fastabend32701dc2011-09-27 03:51:56 +00008477 tx_flags |= (skb->priority & 0x7) <<
8478 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT;
Alexander Duyck66f32a82011-06-29 05:43:22 +00008479 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) {
8480 struct vlan_ethhdr *vhdr;
Francois Romieu2049e1f2014-03-30 03:14:27 +00008481
8482 if (skb_cow_head(skb, 0))
Alexander Duyck66f32a82011-06-29 05:43:22 +00008483 goto out_drop;
8484 vhdr = (struct vlan_ethhdr *)skb->data;
8485 vhdr->h_vlan_TCI = htons(tx_flags >>
8486 IXGBE_TX_FLAGS_VLAN_SHIFT);
8487 } else {
8488 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
8489 }
8490 }
Alexander Duycka535c302011-05-27 05:31:52 +00008491
Alexander Duyck244e27a2012-02-08 07:51:11 +00008492 /* record initial flags and protocol */
8493 first->tx_flags = tx_flags;
8494 first->protocol = protocol;
8495
Yi Zoueacd73f2009-05-13 13:11:06 +00008496#ifdef IXGBE_FCOE
Alexander Duyck66f32a82011-06-29 05:43:22 +00008497 /* setup tx offload for FCoE */
Joe Perchesa1108ff2014-03-13 05:19:25 +00008498 if ((protocol == htons(ETH_P_FCOE)) &&
Alexander Duycka58915c2012-05-25 06:38:18 +00008499 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) {
Alexander Duyck244e27a2012-02-08 07:51:11 +00008500 tso = ixgbe_fso(tx_ring, first, &hdr_len);
Alexander Duyck897ab152011-05-27 05:31:47 +00008501 if (tso < 0)
8502 goto out_drop;
Auke Kok9a799d72007-09-15 14:07:45 -07008503
Alexander Duyck66f32a82011-06-29 05:43:22 +00008504 goto xmit_fcoe;
Alexander Duyck44df32c2009-03-31 21:34:23 +00008505 }
Auke Kok9a799d72007-09-15 14:07:45 -07008506
Auke Kok9a799d72007-09-15 14:07:45 -07008507#endif /* IXGBE_FCOE */
Shannon Nelson59259472017-12-19 16:00:00 -08008508
8509#ifdef CONFIG_XFRM_OFFLOAD
8510 if (skb->sp && !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx))
8511 goto out_drop;
8512#endif
Shannon Nelson70da6822018-03-16 11:09:07 -07008513 tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx);
Alexander Duyck66f32a82011-06-29 05:43:22 +00008514 if (tso < 0)
Auke Kok9a799d72007-09-15 14:07:45 -07008515 goto out_drop;
Alexander Duyck244e27a2012-02-08 07:51:11 +00008516 else if (!tso)
Shannon Nelson59259472017-12-19 16:00:00 -08008517 ixgbe_tx_csum(tx_ring, first, &ipsec_tx);
Alexander Duyck66f32a82011-06-29 05:43:22 +00008518
8519 /* add the ATR filter if ATR is on */
8520 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
Alexander Duyck244e27a2012-02-08 07:51:11 +00008521 ixgbe_atr(tx_ring, first);
Alexander Duyck66f32a82011-06-29 05:43:22 +00008522
8523#ifdef IXGBE_FCOE
8524xmit_fcoe:
8525#endif /* IXGBE_FCOE */
Jacob Keller5fef1242017-05-03 10:28:56 -07008526 if (ixgbe_tx_map(tx_ring, first, hdr_len))
8527 goto cleanup_tx_timestamp;
Alexander Duyckd3d00232011-07-15 02:31:25 +00008528
Auke Kok9a799d72007-09-15 14:07:45 -07008529 return NETDEV_TX_OK;
Alexander Duyck897ab152011-05-27 05:31:47 +00008530
8531out_drop:
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00008532 dev_kfree_skb_any(first->skb);
8533 first->skb = NULL;
Jacob Keller5fef1242017-05-03 10:28:56 -07008534cleanup_tx_timestamp:
8535 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) {
8536 dev_kfree_skb_any(adapter->ptp_tx_skb);
8537 adapter->ptp_tx_skb = NULL;
8538 cancel_work_sync(&adapter->ptp_tx_work);
8539 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state);
8540 }
Alexander Duyckfd0db0e2012-02-08 07:50:56 +00008541
Alexander Duyck897ab152011-05-27 05:31:47 +00008542 return NETDEV_TX_OK;
Auke Kok9a799d72007-09-15 14:07:45 -07008543}
8544
John Fastabend2a47fa42013-11-06 09:54:52 -08008545static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb,
8546 struct net_device *netdev,
8547 struct ixgbe_ring *ring)
Auke Kok9a799d72007-09-15 14:07:45 -07008548{
8549 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07008550 struct ixgbe_ring *tx_ring;
Auke Kok9a799d72007-09-15 14:07:45 -07008551
Alexander Duycka50c29d2012-02-08 07:50:40 +00008552 /*
8553 * The minimum packet size for olinfo paylen is 17 so pad the skb
8554 * in order to meet this minimum size requirement.
8555 */
Alexander Duycka94d9e22014-12-03 08:17:39 -08008556 if (skb_put_padto(skb, 17))
8557 return NETDEV_TX_OK;
Alexander Duycka50c29d2012-02-08 07:50:40 +00008558
John Fastabend2a47fa42013-11-06 09:54:52 -08008559 tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping];
8560
Auke Kok9a799d72007-09-15 14:07:45 -07008561 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
8562}
8563
John Fastabend2a47fa42013-11-06 09:54:52 -08008564static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
8565 struct net_device *netdev)
8566{
8567 return __ixgbe_xmit_frame(skb, netdev, NULL);
8568}
8569
Auke Kok9a799d72007-09-15 14:07:45 -07008570/**
8571 * ixgbe_set_mac - Change the Ethernet Address of the NIC
8572 * @netdev: network interface device structure
8573 * @p: pointer to an address structure
8574 *
8575 * Returns 0 on success, negative on failure
8576 **/
8577static int ixgbe_set_mac(struct net_device *netdev, void *p)
8578{
8579 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8580 struct ixgbe_hw *hw = &adapter->hw;
8581 struct sockaddr *addr = p;
8582
8583 if (!is_valid_ether_addr(addr->sa_data))
8584 return -EADDRNOTAVAIL;
8585
8586 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07008587 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07008588
Alexander Duyckc9f53e62015-10-22 16:26:30 -07008589 ixgbe_mac_set_default_filter(adapter);
8590
8591 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07008592}
8593
Ben Hutchings6b73e102009-04-29 08:08:58 +00008594static int
8595ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
8596{
8597 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8598 struct ixgbe_hw *hw = &adapter->hw;
8599 u16 value;
8600 int rc;
8601
8602 if (prtad != hw->phy.mdio.prtad)
8603 return -EINVAL;
8604 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
8605 if (!rc)
8606 rc = value;
8607 return rc;
8608}
8609
8610static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
8611 u16 addr, u16 value)
8612{
8613 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8614 struct ixgbe_hw *hw = &adapter->hw;
8615
8616 if (prtad != hw->phy.mdio.prtad)
8617 return -EINVAL;
8618 return hw->phy.ops.write_reg(hw, addr, devad, value);
8619}
8620
8621static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
8622{
8623 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8624
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008625 switch (cmd) {
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008626 case SIOCSHWTSTAMP:
Jacob Keller93501d42014-02-28 15:48:58 -08008627 return ixgbe_ptp_set_ts_config(adapter, req);
8628 case SIOCGHWTSTAMP:
8629 return ixgbe_ptp_get_ts_config(adapter, req);
Mark D Rustade0f06bb2016-08-31 10:34:28 -07008630 case SIOCGMIIPHY:
8631 if (!adapter->hw.phy.ops.read_reg)
8632 return -EOPNOTSUPP;
8633 /* fall through */
Jacob Keller3a6a4ed2012-05-01 05:24:58 +00008634 default:
8635 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
8636 }
Ben Hutchings6b73e102009-04-29 08:08:58 +00008637}
8638
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008639/**
8640 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00008641 * netdev->dev_addrs
Tony Nguyen5ba643c2017-12-04 11:28:30 -08008642 * @dev: network interface device structure
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008643 *
8644 * Returns non-zero on failure
8645 **/
8646static int ixgbe_add_sanmac_netdev(struct net_device *dev)
8647{
8648 int err = 0;
8649 struct ixgbe_adapter *adapter = netdev_priv(dev);
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00008650 struct ixgbe_hw *hw = &adapter->hw;
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008651
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00008652 if (is_valid_ether_addr(hw->mac.san_addr)) {
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008653 rtnl_lock();
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00008654 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN);
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008655 rtnl_unlock();
Alexander Duyck7fa7c9d2012-05-05 05:32:52 +00008656
8657 /* update SAN MAC vmdq pool selection */
8658 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008659 }
8660 return err;
8661}
8662
8663/**
8664 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00008665 * netdev->dev_addrs
Tony Nguyen5ba643c2017-12-04 11:28:30 -08008666 * @dev: network interface device structure
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00008667 *
8668 * Returns non-zero on failure
8669 **/
8670static int ixgbe_del_sanmac_netdev(struct net_device *dev)
8671{
8672 int err = 0;
8673 struct ixgbe_adapter *adapter = netdev_priv(dev);
8674 struct ixgbe_mac_info *mac = &adapter->hw.mac;
8675
8676 if (is_valid_ether_addr(mac->san_addr)) {
8677 rtnl_lock();
8678 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
8679 rtnl_unlock();
8680 }
8681 return err;
8682}
8683
Auke Kok9a799d72007-09-15 14:07:45 -07008684#ifdef CONFIG_NET_POLL_CONTROLLER
8685/*
8686 * Polling 'interrupt' - used by things like netconsole to send skbs
8687 * without having to re-enable interrupts. It's not called while
8688 * the interrupt routine is executing.
8689 */
8690static void ixgbe_netpoll(struct net_device *netdev)
8691{
8692 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00008693 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07008694
Alexander Duyck1a647bd2010-01-13 01:49:13 +00008695 /* if interface is down do nothing */
8696 if (test_bit(__IXGBE_DOWN, &adapter->state))
8697 return;
8698
Alexander Duyck856f6062015-02-25 17:45:54 +00008699 /* loop through and schedule all active queues */
8700 for (i = 0; i < adapter->num_q_vectors; i++)
8701 ixgbe_msix_clean_rings(0, adapter->q_vector[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07008702}
Auke Kok9a799d72007-09-15 14:07:45 -07008703
Alexander Duyck581330b2012-02-08 07:51:47 +00008704#endif
stephen hemmingerbc1f4472017-01-06 19:12:52 -08008705
John Fastabend33fdc822017-04-24 03:30:18 -07008706static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats,
8707 struct ixgbe_ring *ring)
8708{
8709 u64 bytes, packets;
8710 unsigned int start;
8711
8712 if (ring) {
8713 do {
8714 start = u64_stats_fetch_begin_irq(&ring->syncp);
8715 packets = ring->stats.packets;
8716 bytes = ring->stats.bytes;
8717 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
8718 stats->tx_packets += packets;
8719 stats->tx_bytes += bytes;
8720 }
8721}
8722
stephen hemmingerbc1f4472017-01-06 19:12:52 -08008723static void ixgbe_get_stats64(struct net_device *netdev,
8724 struct rtnl_link_stats64 *stats)
Eric Dumazetde1036b2010-10-20 23:00:04 +00008725{
8726 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8727 int i;
8728
Eric Dumazet1a515022010-11-16 19:26:42 -08008729 rcu_read_lock();
Eric Dumazetde1036b2010-10-20 23:00:04 +00008730 for (i = 0; i < adapter->num_rx_queues; i++) {
Mark Rutland6aa7de02017-10-23 14:07:29 -07008731 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]);
Eric Dumazetde1036b2010-10-20 23:00:04 +00008732 u64 bytes, packets;
8733 unsigned int start;
8734
Eric Dumazet1a515022010-11-16 19:26:42 -08008735 if (ring) {
8736 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -07008737 start = u64_stats_fetch_begin_irq(&ring->syncp);
Eric Dumazet1a515022010-11-16 19:26:42 -08008738 packets = ring->stats.packets;
8739 bytes = ring->stats.bytes;
Eric W. Biederman57a77442014-03-13 21:26:42 -07008740 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
Eric Dumazet1a515022010-11-16 19:26:42 -08008741 stats->rx_packets += packets;
8742 stats->rx_bytes += bytes;
8743 }
Eric Dumazetde1036b2010-10-20 23:00:04 +00008744 }
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00008745
8746 for (i = 0; i < adapter->num_tx_queues; i++) {
Mark Rutland6aa7de02017-10-23 14:07:29 -07008747 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]);
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00008748
John Fastabend33fdc822017-04-24 03:30:18 -07008749 ixgbe_get_ring_stats64(stats, ring);
8750 }
8751 for (i = 0; i < adapter->num_xdp_queues; i++) {
Mark Rutland6aa7de02017-10-23 14:07:29 -07008752 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]);
John Fastabend33fdc822017-04-24 03:30:18 -07008753
8754 ixgbe_get_ring_stats64(stats, ring);
Eric Dumazet1ac9ad12011-01-12 12:13:14 +00008755 }
Eric Dumazet1a515022010-11-16 19:26:42 -08008756 rcu_read_unlock();
stephen hemmingerbc1f4472017-01-06 19:12:52 -08008757
Eric Dumazetde1036b2010-10-20 23:00:04 +00008758 /* following stats updated by ixgbe_watchdog_task() */
8759 stats->multicast = netdev->stats.multicast;
8760 stats->rx_errors = netdev->stats.rx_errors;
8761 stats->rx_length_errors = netdev->stats.rx_length_errors;
8762 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
8763 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
Eric Dumazetde1036b2010-10-20 23:00:04 +00008764}
8765
Jeff Kirsher8af3c332012-02-18 07:08:14 +00008766#ifdef CONFIG_IXGBE_DCB
Ben Hutchings49ce9c22012-07-10 10:56:00 +00008767/**
8768 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
8769 * @adapter: pointer to ixgbe_adapter
John Fastabend8b1c0b22011-05-03 02:26:48 +00008770 * @tc: number of traffic classes currently enabled
8771 *
8772 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
8773 * 802.1Q priority maps to a packet buffer that exists.
8774 */
8775static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
8776{
8777 struct ixgbe_hw *hw = &adapter->hw;
8778 u32 reg, rsave;
8779 int i;
8780
8781 /* 82598 have a static priority to TC mapping that can not
8782 * be changed so no validation is needed.
8783 */
8784 if (hw->mac.type == ixgbe_mac_82598EB)
8785 return;
8786
8787 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
8788 rsave = reg;
8789
8790 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
8791 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);
8792
8793 /* If up2tc is out of bounds default to zero */
8794 if (up2tc > tc)
8795 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);
8796 }
8797
8798 if (reg != rsave)
8799 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
8800
8801 return;
8802}
8803
Ben Hutchings49ce9c22012-07-10 10:56:00 +00008804/**
Alexander Duyck02debdc2012-05-18 06:33:31 +00008805 * ixgbe_set_prio_tc_map - Configure netdev prio tc map
8806 * @adapter: Pointer to adapter struct
8807 *
8808 * Populate the netdev user priority to tc map
8809 */
8810static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter)
8811{
8812 struct net_device *dev = adapter->netdev;
8813 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
8814 struct ieee_ets *ets = adapter->ixgbe_ieee_ets;
8815 u8 prio;
8816
8817 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) {
8818 u8 tc = 0;
8819
8820 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)
8821 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio);
8822 else if (ets)
8823 tc = ets->prio_tc[prio];
8824
8825 netdev_set_prio_tc_map(dev, prio, tc);
8826 }
8827}
8828
Alexander Duyckcca73c52013-01-12 06:33:44 +00008829#endif /* CONFIG_IXGBE_DCB */
Alexander Duyck02debdc2012-05-18 06:33:31 +00008830/**
Ben Hutchings49ce9c22012-07-10 10:56:00 +00008831 * ixgbe_setup_tc - configure net_device for multiple traffic classes
John Fastabend8b1c0b22011-05-03 02:26:48 +00008832 *
Tony Nguyen5ba643c2017-12-04 11:28:30 -08008833 * @dev: net device to configure
John Fastabend8b1c0b22011-05-03 02:26:48 +00008834 * @tc: number of traffic classes to enable
8835 */
8836int ixgbe_setup_tc(struct net_device *dev, u8 tc)
8837{
John Fastabend8b1c0b22011-05-03 02:26:48 +00008838 struct ixgbe_adapter *adapter = netdev_priv(dev);
8839 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend8b1c0b22011-05-03 02:26:48 +00008840
John Fastabend8b1c0b22011-05-03 02:26:48 +00008841 /* Hardware supports up to 8 traffic classes */
Emil Tantilov7e3f5c82015-07-09 12:28:59 -07008842 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs)
8843 return -EINVAL;
8844
8845 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS)
John Fastabend8b1c0b22011-05-03 02:26:48 +00008846 return -EINVAL;
8847
8848 /* Hardware has to reinitialize queues and interrupts to
Stephen Hemminger52f33af2011-12-22 16:34:52 +00008849 * match packet buffer alignment. Unfortunately, the
John Fastabend8b1c0b22011-05-03 02:26:48 +00008850 * hardware is not flexible enough to do this dynamically.
8851 */
8852 if (netif_running(dev))
8853 ixgbe_close(dev);
Alexander Duyckbf4d67d2015-10-20 13:28:17 -07008854 else
8855 ixgbe_reset(adapter);
8856
John Fastabend8b1c0b22011-05-03 02:26:48 +00008857 ixgbe_clear_interrupt_scheme(adapter);
8858
Alexander Duyckcca73c52013-01-12 06:33:44 +00008859#ifdef CONFIG_IXGBE_DCB
John Fastabende7589ea2011-07-18 22:38:36 +00008860 if (tc) {
John Fastabend8b1c0b22011-05-03 02:26:48 +00008861 netdev_set_num_tc(dev, tc);
Alexander Duyck02debdc2012-05-18 06:33:31 +00008862 ixgbe_set_prio_tc_map(adapter);
8863
Alexander Duyck0efbf122017-11-22 10:57:11 -08008864 adapter->hw_tcs = tc;
John Fastabende7589ea2011-07-18 22:38:36 +00008865 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
John Fastabende7589ea2011-07-18 22:38:36 +00008866
Alexander Duyck943561d2012-05-09 22:14:44 -07008867 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
8868 adapter->last_lfc_mode = adapter->hw.fc.requested_mode;
John Fastabende7589ea2011-07-18 22:38:36 +00008869 adapter->hw.fc.requested_mode = ixgbe_fc_none;
Alexander Duyck943561d2012-05-09 22:14:44 -07008870 }
John Fastabende7589ea2011-07-18 22:38:36 +00008871 } else {
John Fastabend8b1c0b22011-05-03 02:26:48 +00008872 netdev_reset_tc(dev);
Alexander Duyck02debdc2012-05-18 06:33:31 +00008873
Alexander Duyck49cfbeb2017-11-22 10:57:35 -08008874 /* To support macvlan offload we have to use num_tc to
8875 * restrict the queues that can be used by the device.
8876 * By doing this we can avoid reporting a false number of
8877 * queues.
8878 */
8879 if (!tc && adapter->num_rx_pools > 1)
8880 netdev_set_num_tc(dev, 1);
8881
Alexander Duyck943561d2012-05-09 22:14:44 -07008882 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
8883 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
John Fastabende7589ea2011-07-18 22:38:36 +00008884
8885 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
Alexander Duyck0efbf122017-11-22 10:57:11 -08008886 adapter->hw_tcs = tc;
John Fastabende7589ea2011-07-18 22:38:36 +00008887
8888 adapter->temp_dcb_cfg.pfc_mode_enable = false;
8889 adapter->dcb_cfg.pfc_mode_enable = false;
8890 }
8891
John Fastabend8b1c0b22011-05-03 02:26:48 +00008892 ixgbe_validate_rtr(adapter, tc);
Alexander Duyckcca73c52013-01-12 06:33:44 +00008893
8894#endif /* CONFIG_IXGBE_DCB */
8895 ixgbe_init_interrupt_scheme(adapter);
8896
John Fastabend8b1c0b22011-05-03 02:26:48 +00008897 if (netif_running(dev))
Alexander Duyckcca73c52013-01-12 06:33:44 +00008898 return ixgbe_open(dev);
John Fastabend8b1c0b22011-05-03 02:26:48 +00008899
8900 return 0;
8901}
Eric Dumazetde1036b2010-10-20 23:00:04 +00008902
John Fastabendb82b17d2016-02-16 21:18:53 -08008903static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter,
8904 struct tc_cls_u32_offload *cls)
8905{
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07008906 u32 hdl = cls->knode.handle;
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008907 u32 uhtid = TC_U32_USERHTID(cls->knode.handle);
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07008908 u32 loc = cls->knode.handle & 0xfffff;
8909 int err = 0, i, j;
8910 struct ixgbe_jump_table *jump = NULL;
8911
8912 if (loc > IXGBE_MAX_HW_ENTRIES)
8913 return -EINVAL;
John Fastabendb82b17d2016-02-16 21:18:53 -08008914
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008915 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE))
8916 return -EINVAL;
8917
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07008918 /* Clear this filter in the link data it is associated with */
8919 if (uhtid != 0x800) {
8920 jump = adapter->jump_tables[uhtid];
Amritha Nambiar12746fd2016-05-16 18:33:20 -07008921 if (!jump)
8922 return -EINVAL;
8923 if (!test_bit(loc - 1, jump->child_loc_map))
8924 return -EINVAL;
8925 clear_bit(loc - 1, jump->child_loc_map);
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07008926 }
8927
8928 /* Check if the filter being deleted is a link */
8929 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) {
8930 jump = adapter->jump_tables[i];
8931 if (jump && jump->link_hdl == hdl) {
8932 /* Delete filters in the hardware in the child hash
8933 * table associated with this link
8934 */
8935 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) {
8936 if (!test_bit(j, jump->child_loc_map))
8937 continue;
8938 spin_lock(&adapter->fdir_perfect_lock);
8939 err = ixgbe_update_ethtool_fdir_entry(adapter,
8940 NULL,
8941 j + 1);
8942 spin_unlock(&adapter->fdir_perfect_lock);
8943 clear_bit(j, jump->child_loc_map);
8944 }
8945 /* Remove resources for this link */
8946 kfree(jump->input);
8947 kfree(jump->mask);
8948 kfree(jump);
8949 adapter->jump_tables[i] = NULL;
8950 return err;
8951 }
8952 }
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008953
John Fastabendb82b17d2016-02-16 21:18:53 -08008954 spin_lock(&adapter->fdir_perfect_lock);
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008955 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc);
John Fastabendb82b17d2016-02-16 21:18:53 -08008956 spin_unlock(&adapter->fdir_perfect_lock);
8957 return err;
8958}
8959
John Fastabenddb956ae2016-02-16 21:19:19 -08008960static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter,
John Fastabenddb956ae2016-02-16 21:19:19 -08008961 struct tc_cls_u32_offload *cls)
8962{
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008963 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle);
8964
8965 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
8966 return -EINVAL;
8967
John Fastabenddb956ae2016-02-16 21:19:19 -08008968 /* This ixgbe devices do not support hash tables at the moment
8969 * so abort when given hash tables.
8970 */
8971 if (cls->hnode.divisor > 0)
8972 return -EINVAL;
8973
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008974 set_bit(uhtid - 1, &adapter->tables);
John Fastabenddb956ae2016-02-16 21:19:19 -08008975 return 0;
8976}
8977
8978static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter,
8979 struct tc_cls_u32_offload *cls)
8980{
Sridhar Samudrala176621c2016-03-07 09:41:47 -08008981 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle);
8982
8983 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
8984 return -EINVAL;
8985
8986 clear_bit(uhtid - 1, &adapter->tables);
John Fastabenddb956ae2016-02-16 21:19:19 -08008987 return 0;
8988}
8989
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07008990#ifdef CONFIG_NET_CLS_ACT
David Ahern1cd127f2016-10-17 19:15:48 -07008991struct upper_walk_data {
8992 struct ixgbe_adapter *adapter;
8993 u64 action;
8994 int ifindex;
8995 u8 queue;
8996};
8997
8998static int get_macvlan_queue(struct net_device *upper, void *_data)
8999{
9000 if (netif_is_macvlan(upper)) {
9001 struct macvlan_dev *dfwd = netdev_priv(upper);
9002 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
9003 struct upper_walk_data *data = _data;
9004 struct ixgbe_adapter *adapter = data->adapter;
9005 int ifindex = data->ifindex;
9006
9007 if (vadapter && vadapter->netdev->ifindex == ifindex) {
9008 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx;
9009 data->action = data->queue;
9010 return 1;
9011 }
9012 }
9013
9014 return 0;
9015}
9016
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009017static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex,
9018 u8 *queue, u64 *action)
9019{
Alexander Duyck361b5342017-11-22 10:56:16 -08009020 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009021 unsigned int num_vfs = adapter->num_vfs, vf;
David Ahern1cd127f2016-10-17 19:15:48 -07009022 struct upper_walk_data data;
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009023 struct net_device *upper;
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009024
9025 /* redirect to a SRIOV VF */
9026 for (vf = 0; vf < num_vfs; ++vf) {
9027 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev);
9028 if (upper->ifindex == ifindex) {
Alexander Duyck361b5342017-11-22 10:56:16 -08009029 *queue = vf * __ALIGN_MASK(1, ~vmdq->mask);
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009030 *action = vf + 1;
9031 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
9032 return 0;
9033 }
9034 }
9035
9036 /* redirect to a offloaded macvlan netdev */
David Ahern1cd127f2016-10-17 19:15:48 -07009037 data.adapter = adapter;
9038 data.ifindex = ifindex;
9039 data.action = 0;
9040 data.queue = 0;
9041 if (netdev_walk_all_upper_dev_rcu(adapter->netdev,
9042 get_macvlan_queue, &data)) {
9043 *action = data.action;
9044 *queue = data.queue;
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009045
David Ahern1cd127f2016-10-17 19:15:48 -07009046 return 0;
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009047 }
9048
9049 return -EINVAL;
9050}
9051
9052static int parse_tc_actions(struct ixgbe_adapter *adapter,
9053 struct tcf_exts *exts, u64 *action, u8 *queue)
9054{
9055 const struct tc_action *a;
WANG Cong22dc13c2016-08-13 22:35:00 -07009056 LIST_HEAD(actions);
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009057 int err;
9058
Jiri Pirko3bcc0ce2017-08-04 14:28:58 +02009059 if (!tcf_exts_has_actions(exts))
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009060 return -EINVAL;
9061
WANG Cong22dc13c2016-08-13 22:35:00 -07009062 tcf_exts_to_list(exts, &actions);
9063 list_for_each_entry(a, &actions, list) {
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009064
9065 /* Drop action */
9066 if (is_tcf_gact_shot(a)) {
9067 *action = IXGBE_FDIR_DROP_QUEUE;
9068 *queue = IXGBE_FDIR_DROP_QUEUE;
9069 return 0;
9070 }
9071
9072 /* Redirect to a VF or a offloaded macvlan */
Shmulik Ladkani5724b8b2016-10-13 09:06:43 +03009073 if (is_tcf_mirred_egress_redirect(a)) {
Cong Wang9f8a7392017-12-05 16:17:26 -08009074 struct net_device *dev = tcf_mirred_dev(a);
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009075
Cong Wang9f8a7392017-12-05 16:17:26 -08009076 if (!dev)
9077 return -EINVAL;
9078 err = handle_redirect_action(adapter, dev->ifindex, queue,
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009079 action);
9080 if (err == 0)
9081 return err;
9082 }
9083 }
9084
9085 return -EINVAL;
9086}
9087#else
9088static int parse_tc_actions(struct ixgbe_adapter *adapter,
9089 struct tcf_exts *exts, u64 *action, u8 *queue)
9090{
9091 return -EINVAL;
9092}
9093#endif /* CONFIG_NET_CLS_ACT */
9094
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009095static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input,
9096 union ixgbe_atr_input *mask,
9097 struct tc_cls_u32_offload *cls,
9098 struct ixgbe_mat_field *field_ptr,
9099 struct ixgbe_nexthdr *nexthdr)
9100{
9101 int i, j, off;
9102 __be32 val, m;
9103 bool found_entry = false, found_jump_field = false;
9104
9105 for (i = 0; i < cls->knode.sel->nkeys; i++) {
9106 off = cls->knode.sel->keys[i].off;
9107 val = cls->knode.sel->keys[i].val;
9108 m = cls->knode.sel->keys[i].mask;
9109
9110 for (j = 0; field_ptr[j].val; j++) {
9111 if (field_ptr[j].off == off) {
9112 field_ptr[j].val(input, mask, val, m);
9113 input->filter.formatted.flow_type |=
9114 field_ptr[j].type;
9115 found_entry = true;
9116 break;
9117 }
9118 }
9119 if (nexthdr) {
9120 if (nexthdr->off == cls->knode.sel->keys[i].off &&
9121 nexthdr->val == cls->knode.sel->keys[i].val &&
9122 nexthdr->mask == cls->knode.sel->keys[i].mask)
9123 found_jump_field = true;
9124 else
9125 continue;
9126 }
9127 }
9128
9129 if (nexthdr && !found_jump_field)
9130 return -EINVAL;
9131
9132 if (!found_entry)
9133 return 0;
9134
9135 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK |
9136 IXGBE_ATR_L4TYPE_MASK;
9137
9138 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4)
9139 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK;
9140
9141 return 0;
9142}
9143
John Fastabendb82b17d2016-02-16 21:18:53 -08009144static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter,
John Fastabendb82b17d2016-02-16 21:18:53 -08009145 struct tc_cls_u32_offload *cls)
9146{
Jiri Pirko5fd9fc42017-08-07 10:15:29 +02009147 __be16 protocol = cls->common.protocol;
John Fastabendb82b17d2016-02-16 21:18:53 -08009148 u32 loc = cls->knode.handle & 0xfffff;
9149 struct ixgbe_hw *hw = &adapter->hw;
9150 struct ixgbe_mat_field *field_ptr;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009151 struct ixgbe_fdir_filter *input = NULL;
9152 union ixgbe_atr_input *mask = NULL;
9153 struct ixgbe_jump_table *jump = NULL;
9154 int i, err = -EINVAL;
John Fastabendb82b17d2016-02-16 21:18:53 -08009155 u8 queue;
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009156 u32 uhtid, link_uhtid;
John Fastabendb82b17d2016-02-16 21:18:53 -08009157
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009158 uhtid = TC_U32_USERHTID(cls->knode.handle);
9159 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle);
John Fastabendb82b17d2016-02-16 21:18:53 -08009160
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009161 /* At the moment cls_u32 jumps to network layer and skips past
John Fastabendb82b17d2016-02-16 21:18:53 -08009162 * L2 headers. The canonical method to match L2 frames is to use
9163 * negative values. However this is error prone at best but really
9164 * just broken because there is no way to "know" what sort of hdr
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009165 * is in front of the network layer. Fix cls_u32 to support L2
John Fastabendb82b17d2016-02-16 21:18:53 -08009166 * headers when needed.
9167 */
9168 if (protocol != htons(ETH_P_IP))
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009169 return err;
John Fastabendb82b17d2016-02-16 21:18:53 -08009170
9171 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) {
9172 e_err(drv, "Location out of range\n");
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009173 return err;
John Fastabendb82b17d2016-02-16 21:18:53 -08009174 }
9175
9176 /* cls u32 is a graph starting at root node 0x800. The driver tracks
9177 * links and also the fields used to advance the parser across each
9178 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map
9179 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h
9180 * To add support for new nodes update ixgbe_model.h parse structures
9181 * this function _should_ be generic try not to hardcode values here.
9182 */
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009183 if (uhtid == 0x800) {
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009184 field_ptr = (adapter->jump_tables[0])->mat;
John Fastabendb82b17d2016-02-16 21:18:53 -08009185 } else {
Sridhar Samudrala176621c2016-03-07 09:41:47 -08009186 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009187 return err;
9188 if (!adapter->jump_tables[uhtid])
9189 return err;
9190 field_ptr = (adapter->jump_tables[uhtid])->mat;
John Fastabendb82b17d2016-02-16 21:18:53 -08009191 }
9192
9193 if (!field_ptr)
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009194 return err;
9195
9196 /* At this point we know the field_ptr is valid and need to either
9197 * build cls_u32 link or attach filter. Because adding a link to
9198 * a handle that does not exist is invalid and the same for adding
9199 * rules to handles that don't exist.
9200 */
9201
9202 if (link_uhtid) {
9203 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps;
9204
9205 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE)
9206 return err;
9207
9208 if (!test_bit(link_uhtid - 1, &adapter->tables))
9209 return err;
9210
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07009211 /* Multiple filters as links to the same hash table are not
9212 * supported. To add a new filter with the same next header
9213 * but different match/jump conditions, create a new hash table
9214 * and link to it.
9215 */
9216 if (adapter->jump_tables[link_uhtid] &&
9217 (adapter->jump_tables[link_uhtid])->link_hdl) {
9218 e_err(drv, "Link filter exists for link: %x\n",
9219 link_uhtid);
9220 return err;
9221 }
9222
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009223 for (i = 0; nexthdr[i].jump; i++) {
9224 if (nexthdr[i].o != cls->knode.sel->offoff ||
9225 nexthdr[i].s != cls->knode.sel->offshift ||
9226 nexthdr[i].m != cls->knode.sel->offmask)
9227 return err;
9228
9229 jump = kzalloc(sizeof(*jump), GFP_KERNEL);
9230 if (!jump)
9231 return -ENOMEM;
9232 input = kzalloc(sizeof(*input), GFP_KERNEL);
9233 if (!input) {
9234 err = -ENOMEM;
9235 goto free_jump;
9236 }
9237 mask = kzalloc(sizeof(*mask), GFP_KERNEL);
9238 if (!mask) {
9239 err = -ENOMEM;
Amritha Nambiar12746fd2016-05-16 18:33:20 -07009240 goto free_input;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009241 }
9242 jump->input = input;
9243 jump->mask = mask;
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07009244 jump->link_hdl = cls->knode.handle;
9245
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009246 err = ixgbe_clsu32_build_input(input, mask, cls,
9247 field_ptr, &nexthdr[i]);
9248 if (!err) {
9249 jump->mat = nexthdr[i].jump;
9250 adapter->jump_tables[link_uhtid] = jump;
9251 break;
9252 }
9253 }
9254 return 0;
9255 }
John Fastabendb82b17d2016-02-16 21:18:53 -08009256
9257 input = kzalloc(sizeof(*input), GFP_KERNEL);
9258 if (!input)
9259 return -ENOMEM;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009260 mask = kzalloc(sizeof(*mask), GFP_KERNEL);
9261 if (!mask) {
9262 err = -ENOMEM;
Amritha Nambiar12746fd2016-05-16 18:33:20 -07009263 goto free_input;
John Fastabendb82b17d2016-02-16 21:18:53 -08009264 }
9265
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009266 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) {
9267 if ((adapter->jump_tables[uhtid])->input)
9268 memcpy(input, (adapter->jump_tables[uhtid])->input,
9269 sizeof(*input));
9270 if ((adapter->jump_tables[uhtid])->mask)
9271 memcpy(mask, (adapter->jump_tables[uhtid])->mask,
9272 sizeof(*mask));
Amritha Nambiar12746fd2016-05-16 18:33:20 -07009273
9274 /* Lookup in all child hash tables if this location is already
9275 * filled with a filter
9276 */
9277 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) {
9278 struct ixgbe_jump_table *link = adapter->jump_tables[i];
9279
9280 if (link && (test_bit(loc - 1, link->child_loc_map))) {
9281 e_err(drv, "Filter exists in location: %x\n",
9282 loc);
9283 err = -EINVAL;
9284 goto err_out;
9285 }
9286 }
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009287 }
9288 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL);
9289 if (err)
John Fastabendb82b17d2016-02-16 21:18:53 -08009290 goto err_out;
9291
Sridhar Samudrala947f8a42016-04-05 10:39:07 -07009292 err = parse_tc_actions(adapter, cls->knode.exts, &input->action,
9293 &queue);
9294 if (err < 0)
John Fastabendb82b17d2016-02-16 21:18:53 -08009295 goto err_out;
John Fastabendb82b17d2016-02-16 21:18:53 -08009296
John Fastabendb82b17d2016-02-16 21:18:53 -08009297 input->sw_idx = loc;
9298
9299 spin_lock(&adapter->fdir_perfect_lock);
9300
9301 if (hlist_empty(&adapter->fdir_filter_list)) {
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009302 memcpy(&adapter->fdir_mask, mask, sizeof(*mask));
9303 err = ixgbe_fdir_set_input_mask_82599(hw, mask);
John Fastabendb82b17d2016-02-16 21:18:53 -08009304 if (err)
9305 goto err_out_w_lock;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009306 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) {
John Fastabendb82b17d2016-02-16 21:18:53 -08009307 err = -EINVAL;
9308 goto err_out_w_lock;
9309 }
9310
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009311 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask);
John Fastabendb82b17d2016-02-16 21:18:53 -08009312 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter,
9313 input->sw_idx, queue);
9314 if (!err)
9315 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx);
9316 spin_unlock(&adapter->fdir_perfect_lock);
9317
Amritha Nambiar12746fd2016-05-16 18:33:20 -07009318 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid]))
9319 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map);
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07009320
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009321 kfree(mask);
John Fastabendb82b17d2016-02-16 21:18:53 -08009322 return err;
9323err_out_w_lock:
9324 spin_unlock(&adapter->fdir_perfect_lock);
9325err_out:
Amritha Nambiar1ecedc92016-05-06 19:09:51 -07009326 kfree(mask);
Amritha Nambiar12746fd2016-05-16 18:33:20 -07009327free_input:
9328 kfree(input);
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -04009329free_jump:
9330 kfree(jump);
9331 return err;
John Fastabendb82b17d2016-02-16 21:18:53 -08009332}
9333
Jiri Pirko6ea30f82017-10-19 15:50:41 +02009334static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter,
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009335 struct tc_cls_u32_offload *cls_u32)
9336{
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009337 switch (cls_u32->command) {
9338 case TC_CLSU32_NEW_KNODE:
9339 case TC_CLSU32_REPLACE_KNODE:
Jiri Pirko5fd9fc42017-08-07 10:15:29 +02009340 return ixgbe_configure_clsu32(adapter, cls_u32);
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009341 case TC_CLSU32_DELETE_KNODE:
9342 return ixgbe_delete_clsu32(adapter, cls_u32);
9343 case TC_CLSU32_NEW_HNODE:
9344 case TC_CLSU32_REPLACE_HNODE:
Jiri Pirko5fd9fc42017-08-07 10:15:29 +02009345 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32);
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009346 case TC_CLSU32_DELETE_HNODE:
9347 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32);
9348 default:
9349 return -EOPNOTSUPP;
9350 }
9351}
9352
Jiri Pirko6ea30f82017-10-19 15:50:41 +02009353static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
9354 void *cb_priv)
9355{
9356 struct ixgbe_adapter *adapter = cb_priv;
9357
Jakub Kicinskia60c3fd2018-01-25 14:00:49 -08009358 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
Jiri Pirko44ae12a2017-11-01 11:47:39 +01009359 return -EOPNOTSUPP;
9360
Jiri Pirko6ea30f82017-10-19 15:50:41 +02009361 switch (type) {
9362 case TC_SETUP_CLSU32:
9363 return ixgbe_setup_tc_cls_u32(adapter, type_data);
9364 default:
9365 return -EOPNOTSUPP;
9366 }
9367}
9368
9369static int ixgbe_setup_tc_block(struct net_device *dev,
9370 struct tc_block_offload *f)
9371{
9372 struct ixgbe_adapter *adapter = netdev_priv(dev);
9373
9374 if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
9375 return -EOPNOTSUPP;
9376
9377 switch (f->command) {
9378 case TC_BLOCK_BIND:
9379 return tcf_block_cb_register(f->block, ixgbe_setup_tc_block_cb,
9380 adapter, adapter);
9381 case TC_BLOCK_UNBIND:
9382 tcf_block_cb_unregister(f->block, ixgbe_setup_tc_block_cb,
9383 adapter);
9384 return 0;
9385 default:
9386 return -EOPNOTSUPP;
9387 }
9388}
9389
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009390static int ixgbe_setup_tc_mqprio(struct net_device *dev,
9391 struct tc_mqprio_qopt *mqprio)
9392{
9393 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
9394 return ixgbe_setup_tc(dev, mqprio->num_tc);
9395}
9396
Jiri Pirko2572ac52017-08-07 10:15:17 +02009397static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type,
Jiri Pirkode4784c2017-08-07 10:15:32 +02009398 void *type_data)
John Fastabende4c67342016-02-16 21:16:15 -08009399{
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009400 switch (type) {
Jiri Pirko6ea30f82017-10-19 15:50:41 +02009401 case TC_SETUP_BLOCK:
9402 return ixgbe_setup_tc_block(dev, type_data);
Nogah Frankel575ed7d2017-11-06 07:23:42 +01009403 case TC_SETUP_QDISC_MQPRIO:
Jiri Pirkode4784c2017-08-07 10:15:32 +02009404 return ixgbe_setup_tc_mqprio(dev, type_data);
Jiri Pirkobc32afd2017-08-07 10:15:21 +02009405 default:
Jiri Pirkoa5fcf8a2017-06-06 17:00:16 +02009406 return -EOPNOTSUPP;
John Fastabendb82b17d2016-02-16 21:18:53 -08009407 }
John Fastabende4c67342016-02-16 21:16:15 -08009408}
9409
Greg Roseda36b642012-12-11 08:26:43 +00009410#ifdef CONFIG_PCI_IOV
9411void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter)
9412{
9413 struct net_device *netdev = adapter->netdev;
9414
9415 rtnl_lock();
Alexander Duyck0efbf122017-11-22 10:57:11 -08009416 ixgbe_setup_tc(netdev, adapter->hw_tcs);
Greg Roseda36b642012-12-11 08:26:43 +00009417 rtnl_unlock();
9418}
9419
9420#endif
Don Skidmore082757a2011-07-21 05:55:00 +00009421void ixgbe_do_reset(struct net_device *netdev)
9422{
9423 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9424
9425 if (netif_running(netdev))
9426 ixgbe_reinit_locked(adapter);
9427 else
9428 ixgbe_reset(adapter);
9429}
9430
Michał Mirosławc8f44af2011-11-15 15:29:55 +00009431static netdev_features_t ixgbe_fix_features(struct net_device *netdev,
Alexander Duyck567d2de2012-02-11 07:18:57 +00009432 netdev_features_t features)
Don Skidmore082757a2011-07-21 05:55:00 +00009433{
9434 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9435
Don Skidmore082757a2011-07-21 05:55:00 +00009436 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
Alexander Duyck567d2de2012-02-11 07:18:57 +00009437 if (!(features & NETIF_F_RXCSUM))
9438 features &= ~NETIF_F_LRO;
Don Skidmore082757a2011-07-21 05:55:00 +00009439
Alexander Duyck567d2de2012-02-11 07:18:57 +00009440 /* Turn off LRO if not RSC capable */
9441 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE))
9442 features &= ~NETIF_F_LRO;
Jacob Keller8e2813f2012-04-21 06:05:40 +00009443
Alexander Duyck567d2de2012-02-11 07:18:57 +00009444 return features;
Don Skidmore082757a2011-07-21 05:55:00 +00009445}
9446
Michał Mirosławc8f44af2011-11-15 15:29:55 +00009447static int ixgbe_set_features(struct net_device *netdev,
Alexander Duyck567d2de2012-02-11 07:18:57 +00009448 netdev_features_t features)
Don Skidmore082757a2011-07-21 05:55:00 +00009449{
9450 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Alexander Duyck567d2de2012-02-11 07:18:57 +00009451 netdev_features_t changed = netdev->features ^ features;
Don Skidmore082757a2011-07-21 05:55:00 +00009452 bool need_reset = false;
9453
Don Skidmore082757a2011-07-21 05:55:00 +00009454 /* Make sure RSC matches LRO, reset if change */
Alexander Duyck567d2de2012-02-11 07:18:57 +00009455 if (!(features & NETIF_F_LRO)) {
9456 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Don Skidmore082757a2011-07-21 05:55:00 +00009457 need_reset = true;
Alexander Duyck567d2de2012-02-11 07:18:57 +00009458 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
9459 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) &&
9460 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
9461 if (adapter->rx_itr_setting == 1 ||
9462 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) {
9463 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
9464 need_reset = true;
9465 } else if ((changed ^ features) & NETIF_F_LRO) {
9466 e_info(probe, "rx-usecs set too low, "
9467 "disabling RSC\n");
Don Skidmore082757a2011-07-21 05:55:00 +00009468 }
9469 }
9470
9471 /*
John Fastabendb82b17d2016-02-16 21:18:53 -08009472 * Check if Flow Director n-tuple support or hw_tc support was
9473 * enabled or disabled. If the state changed, we need to reset.
Don Skidmore082757a2011-07-21 05:55:00 +00009474 */
John Fastabendb82b17d2016-02-16 21:18:53 -08009475 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) {
Alexander Duyck567d2de2012-02-11 07:18:57 +00009476 /* turn off ATR, enable perfect filters and reset */
Alexander Duyck39cb6812012-06-06 05:38:20 +00009477 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
9478 need_reset = true;
9479
Alexander Duyck567d2de2012-02-11 07:18:57 +00009480 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
9481 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
John Fastabendb82b17d2016-02-16 21:18:53 -08009482 } else {
Alexander Duyck39cb6812012-06-06 05:38:20 +00009483 /* turn off perfect filters, enable ATR and reset */
9484 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
9485 need_reset = true;
9486
9487 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
9488
9489 /* We cannot enable ATR if SR-IOV is enabled */
John Fastabendb82b17d2016-02-16 21:18:53 -08009490 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED ||
9491 /* We cannot enable ATR if we have 2 or more tcs */
Alexander Duyck0efbf122017-11-22 10:57:11 -08009492 (adapter->hw_tcs > 1) ||
John Fastabendb82b17d2016-02-16 21:18:53 -08009493 /* We cannot enable ATR if RSS is disabled */
9494 (adapter->ring_feature[RING_F_RSS].limit <= 1) ||
9495 /* A sample rate of 0 indicates ATR disabled */
9496 (!adapter->atr_sample_rate))
9497 ; /* do nothing not supported */
9498 else /* otherwise supported and set the flag */
9499 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
Don Skidmore082757a2011-07-21 05:55:00 +00009500 }
9501
Ben Greear3f2d1c02012-03-08 08:28:41 +00009502 if (changed & NETIF_F_RXALL)
9503 need_reset = true;
9504
Alexander Duyck567d2de2012-02-11 07:18:57 +00009505 netdev->features = features;
Mark Rustad67359c32015-06-15 11:33:25 -07009506
Mark Rustad67359c32015-06-15 11:33:25 -07009507 if ((adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) {
Emil Tantilova21d0822016-08-10 11:19:23 -07009508 if (features & NETIF_F_RXCSUM) {
9509 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
9510 } else {
9511 u32 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK;
9512
9513 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
9514 }
9515 }
9516
9517 if ((adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) {
9518 if (features & NETIF_F_RXCSUM) {
9519 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
9520 } else {
9521 u32 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK;
9522
9523 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
9524 }
Mark Rustad67359c32015-06-15 11:33:25 -07009525 }
Mark Rustad67359c32015-06-15 11:33:25 -07009526
Don Skidmore082757a2011-07-21 05:55:00 +00009527 if (need_reset)
9528 ixgbe_do_reset(netdev);
Alexander Duyck0c5a6162016-03-10 10:01:10 -08009529 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX |
9530 NETIF_F_HW_VLAN_CTAG_FILTER))
9531 ixgbe_set_rx_mode(netdev);
Don Skidmore082757a2011-07-21 05:55:00 +00009532
9533 return 0;
Don Skidmore082757a2011-07-21 05:55:00 +00009534}
9535
Don Skidmore3f207802014-12-23 07:40:34 +00009536/**
Emil Tantilova21d0822016-08-10 11:19:23 -07009537 * ixgbe_add_udp_tunnel_port - Get notifications about adding UDP tunnel ports
Don Skidmore3f207802014-12-23 07:40:34 +00009538 * @dev: The port's netdev
Sabrina Dubrocae5de25d2016-07-11 13:12:28 +02009539 * @ti: Tunnel endpoint information
Don Skidmore3f207802014-12-23 07:40:34 +00009540 **/
Emil Tantilova21d0822016-08-10 11:19:23 -07009541static void ixgbe_add_udp_tunnel_port(struct net_device *dev,
9542 struct udp_tunnel_info *ti)
Don Skidmore3f207802014-12-23 07:40:34 +00009543{
9544 struct ixgbe_adapter *adapter = netdev_priv(dev);
9545 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckb3a49552016-06-16 12:22:19 -07009546 __be16 port = ti->port;
Emil Tantilova21d0822016-08-10 11:19:23 -07009547 u32 port_shift = 0;
9548 u32 reg;
Mark Rustad67359c32015-06-15 11:33:25 -07009549
Alexander Duyckb3a49552016-06-16 12:22:19 -07009550 if (ti->sa_family != AF_INET)
9551 return;
9552
Emil Tantilova21d0822016-08-10 11:19:23 -07009553 switch (ti->type) {
9554 case UDP_TUNNEL_TYPE_VXLAN:
9555 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
9556 return;
Don Skidmore3f207802014-12-23 07:40:34 +00009557
Emil Tantilova21d0822016-08-10 11:19:23 -07009558 if (adapter->vxlan_port == port)
9559 return;
Don Skidmore3f207802014-12-23 07:40:34 +00009560
Emil Tantilova21d0822016-08-10 11:19:23 -07009561 if (adapter->vxlan_port) {
9562 netdev_info(dev,
9563 "VXLAN port %d set, not adding port %d\n",
9564 ntohs(adapter->vxlan_port),
9565 ntohs(port));
9566 return;
9567 }
9568
9569 adapter->vxlan_port = port;
9570 break;
9571 case UDP_TUNNEL_TYPE_GENEVE:
9572 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))
9573 return;
9574
9575 if (adapter->geneve_port == port)
9576 return;
9577
9578 if (adapter->geneve_port) {
9579 netdev_info(dev,
9580 "GENEVE port %d set, not adding port %d\n",
9581 ntohs(adapter->geneve_port),
9582 ntohs(port));
9583 return;
9584 }
9585
9586 port_shift = IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT;
9587 adapter->geneve_port = port;
9588 break;
9589 default:
Don Skidmore3f207802014-12-23 07:40:34 +00009590 return;
9591 }
9592
Emil Tantilova21d0822016-08-10 11:19:23 -07009593 reg = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) | ntohs(port) << port_shift;
9594 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, reg);
Don Skidmore3f207802014-12-23 07:40:34 +00009595}
9596
9597/**
Emil Tantilova21d0822016-08-10 11:19:23 -07009598 * ixgbe_del_udp_tunnel_port - Get notifications about removing UDP tunnel ports
Don Skidmore3f207802014-12-23 07:40:34 +00009599 * @dev: The port's netdev
Sabrina Dubrocae5de25d2016-07-11 13:12:28 +02009600 * @ti: Tunnel endpoint information
Don Skidmore3f207802014-12-23 07:40:34 +00009601 **/
Emil Tantilova21d0822016-08-10 11:19:23 -07009602static void ixgbe_del_udp_tunnel_port(struct net_device *dev,
9603 struct udp_tunnel_info *ti)
Don Skidmore3f207802014-12-23 07:40:34 +00009604{
9605 struct ixgbe_adapter *adapter = netdev_priv(dev);
Emil Tantilova21d0822016-08-10 11:19:23 -07009606 u32 port_mask;
Don Skidmore3f207802014-12-23 07:40:34 +00009607
Emil Tantilova21d0822016-08-10 11:19:23 -07009608 if (ti->type != UDP_TUNNEL_TYPE_VXLAN &&
9609 ti->type != UDP_TUNNEL_TYPE_GENEVE)
Alexander Duyckb3a49552016-06-16 12:22:19 -07009610 return;
9611
9612 if (ti->sa_family != AF_INET)
9613 return;
9614
Emil Tantilova21d0822016-08-10 11:19:23 -07009615 switch (ti->type) {
9616 case UDP_TUNNEL_TYPE_VXLAN:
9617 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
9618 return;
Mark Rustad67359c32015-06-15 11:33:25 -07009619
Emil Tantilova21d0822016-08-10 11:19:23 -07009620 if (adapter->vxlan_port != ti->port) {
9621 netdev_info(dev, "VXLAN port %d not found\n",
9622 ntohs(ti->port));
9623 return;
9624 }
9625
9626 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK;
9627 break;
9628 case UDP_TUNNEL_TYPE_GENEVE:
9629 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))
9630 return;
9631
9632 if (adapter->geneve_port != ti->port) {
9633 netdev_info(dev, "GENEVE port %d not found\n",
9634 ntohs(ti->port));
9635 return;
9636 }
9637
9638 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK;
9639 break;
9640 default:
Don Skidmore3f207802014-12-23 07:40:34 +00009641 return;
9642 }
9643
Emil Tantilova21d0822016-08-10 11:19:23 -07009644 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
9645 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
Don Skidmore3f207802014-12-23 07:40:34 +00009646}
9647
stephen hemmingeredc7d572012-10-01 12:32:33 +00009648static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
John Fastabend0f4b0ad2012-04-15 06:44:19 +00009649 struct net_device *dev,
Jiri Pirkof6f64242014-11-28 14:34:15 +01009650 const unsigned char *addr, u16 vid,
John Fastabend0f4b0ad2012-04-15 06:44:19 +00009651 u16 flags)
9652{
Alexander Duyckbcfd3432014-07-17 02:11:22 +00009653 /* guarantee we can provide a unique filter for the unicast address */
Ben Hutchings46acc462012-11-01 09:11:11 +00009654 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
Alexander Duyck2f9be162015-10-22 16:26:42 -07009655 struct ixgbe_adapter *adapter = netdev_priv(dev);
9656 u16 pool = VMDQ_P(0);
9657
9658 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool))
Alexander Duyckbcfd3432014-07-17 02:11:22 +00009659 return -ENOMEM;
John Fastabend0f4b0ad2012-04-15 06:44:19 +00009660 }
9661
Jiri Pirkof6f64242014-11-28 14:34:15 +01009662 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags);
John Fastabend0f4b0ad2012-04-15 06:44:19 +00009663}
9664
Don Skidmore219efe92015-04-09 22:03:22 -07009665/**
9666 * ixgbe_configure_bridge_mode - set various bridge modes
Tony Nguyen5ba643c2017-12-04 11:28:30 -08009667 * @adapter: the private structure
9668 * @mode: requested bridge mode
Don Skidmore219efe92015-04-09 22:03:22 -07009669 *
9670 * Configure some settings require for various bridge modes.
9671 **/
9672static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter,
9673 __u16 mode)
9674{
Don Skidmore6d4c96a2015-04-09 22:03:23 -07009675 struct ixgbe_hw *hw = &adapter->hw;
9676 unsigned int p, num_pools;
9677 u32 vmdctl;
9678
Don Skidmore219efe92015-04-09 22:03:22 -07009679 switch (mode) {
9680 case BRIDGE_MODE_VEPA:
Don Skidmore6d4c96a2015-04-09 22:03:23 -07009681 /* disable Tx loopback, rely on switch hairpin mode */
Don Skidmore219efe92015-04-09 22:03:22 -07009682 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0);
Don Skidmore6d4c96a2015-04-09 22:03:23 -07009683
9684 /* must enable Rx switching replication to allow multicast
9685 * packet reception on all VFs, and to enable source address
9686 * pruning.
9687 */
9688 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
9689 vmdctl |= IXGBE_VT_CTL_REPLEN;
9690 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
9691
9692 /* enable Rx source address pruning. Note, this requires
9693 * replication to be enabled or else it does nothing.
9694 */
9695 num_pools = adapter->num_vfs + adapter->num_rx_pools;
9696 for (p = 0; p < num_pools; p++) {
9697 if (hw->mac.ops.set_source_address_pruning)
9698 hw->mac.ops.set_source_address_pruning(hw,
9699 true,
9700 p);
9701 }
Don Skidmore219efe92015-04-09 22:03:22 -07009702 break;
9703 case BRIDGE_MODE_VEB:
Don Skidmore6d4c96a2015-04-09 22:03:23 -07009704 /* enable Tx loopback for internal VF/PF communication */
Don Skidmore219efe92015-04-09 22:03:22 -07009705 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC,
9706 IXGBE_PFDTXGSWC_VT_LBEN);
Don Skidmore6d4c96a2015-04-09 22:03:23 -07009707
9708 /* disable Rx switching replication unless we have SR-IOV
9709 * virtual functions
9710 */
9711 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
9712 if (!adapter->num_vfs)
9713 vmdctl &= ~IXGBE_VT_CTL_REPLEN;
9714 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
9715
9716 /* disable Rx source address pruning, since we don't expect to
9717 * be receiving external loopback of our transmitted frames.
9718 */
9719 num_pools = adapter->num_vfs + adapter->num_rx_pools;
9720 for (p = 0; p < num_pools; p++) {
9721 if (hw->mac.ops.set_source_address_pruning)
9722 hw->mac.ops.set_source_address_pruning(hw,
9723 false,
9724 p);
9725 }
Don Skidmore219efe92015-04-09 22:03:22 -07009726 break;
9727 default:
9728 return -EINVAL;
9729 }
9730
9731 adapter->bridge_mode = mode;
9732
9733 e_info(drv, "enabling bridge mode: %s\n",
9734 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
9735
9736 return 0;
9737}
9738
John Fastabend815cccb2012-10-24 08:13:09 +00009739static int ixgbe_ndo_bridge_setlink(struct net_device *dev,
Roopa Prabhuadd511b2015-01-29 22:40:12 -08009740 struct nlmsghdr *nlh, u16 flags)
John Fastabend815cccb2012-10-24 08:13:09 +00009741{
9742 struct ixgbe_adapter *adapter = netdev_priv(dev);
9743 struct nlattr *attr, *br_spec;
9744 int rem;
9745
9746 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
9747 return -EOPNOTSUPP;
9748
9749 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
Thomas Graf4ea85e82014-11-26 13:42:18 +01009750 if (!br_spec)
9751 return -EINVAL;
John Fastabend815cccb2012-10-24 08:13:09 +00009752
9753 nla_for_each_nested(attr, br_spec, rem) {
Mark Rustada1e869d2015-04-10 10:36:36 -07009754 int status;
John Fastabend815cccb2012-10-24 08:13:09 +00009755 __u16 mode;
John Fastabend815cccb2012-10-24 08:13:09 +00009756
9757 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9758 continue;
9759
Thomas Grafb7c1a312014-11-26 13:42:17 +01009760 if (nla_len(attr) < sizeof(mode))
9761 return -EINVAL;
9762
John Fastabend815cccb2012-10-24 08:13:09 +00009763 mode = nla_get_u16(attr);
Don Skidmore219efe92015-04-09 22:03:22 -07009764 status = ixgbe_configure_bridge_mode(adapter, mode);
9765 if (status)
9766 return status;
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07009767
9768 break;
John Fastabend815cccb2012-10-24 08:13:09 +00009769 }
9770
9771 return 0;
9772}
9773
9774static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
Vlad Yasevich6cbdcee2013-02-13 12:00:13 +00009775 struct net_device *dev,
Nicolas Dichtel46c264d2015-04-28 18:33:49 +02009776 u32 filter_mask, int nlflags)
John Fastabend815cccb2012-10-24 08:13:09 +00009777{
9778 struct ixgbe_adapter *adapter = netdev_priv(dev);
John Fastabend815cccb2012-10-24 08:13:09 +00009779
9780 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
9781 return 0;
9782
Don Skidmoreaa2bacb2015-04-09 22:03:22 -07009783 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
Scott Feldman7d4f8d82015-06-22 00:27:17 -07009784 adapter->bridge_mode, 0, 0, nlflags,
9785 filter_mask, NULL);
John Fastabend815cccb2012-10-24 08:13:09 +00009786}
9787
John Fastabend2a47fa42013-11-06 09:54:52 -08009788static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev)
9789{
9790 struct ixgbe_fwd_adapter *fwd_adapter = NULL;
9791 struct ixgbe_adapter *adapter = netdev_priv(pdev);
Jacob Kelleraac2f1b2014-08-21 06:17:59 +00009792 int used_pools = adapter->num_vfs + adapter->num_rx_pools;
Alexander Duyck0efbf122017-11-22 10:57:11 -08009793 int tcs = adapter->hw_tcs ? : 1;
John Fastabend51f37732013-11-08 00:51:10 -08009794 unsigned int limit;
John Fastabend2a47fa42013-11-06 09:54:52 -08009795 int pool, err;
9796
Jacob Kelleraac2f1b2014-08-21 06:17:59 +00009797 /* Hardware has a limited number of available pools. Each VF, and the
9798 * PF require a pool. Check to ensure we don't attempt to use more
9799 * then the available number of pools.
9800 */
9801 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS)
9802 return ERR_PTR(-EINVAL);
9803
John Fastabend2a47fa42013-11-06 09:54:52 -08009804 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
Alexander Duyck4e039c12017-11-22 10:56:40 -08009805 adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) ||
John Fastabend2a47fa42013-11-06 09:54:52 -08009806 (adapter->num_rx_pools > IXGBE_MAX_MACVLANS))
9807 return ERR_PTR(-EBUSY);
9808
Maninder Singhbc52f952015-06-19 09:37:55 +05309809 fwd_adapter = kzalloc(sizeof(*fwd_adapter), GFP_KERNEL);
John Fastabend2a47fa42013-11-06 09:54:52 -08009810 if (!fwd_adapter)
9811 return ERR_PTR(-ENOMEM);
9812
Alexander Duyck4e039c12017-11-22 10:56:40 -08009813 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools);
9814 set_bit(pool, adapter->fwd_bitmask);
9815 limit = find_last_bit(adapter->fwd_bitmask, adapter->num_rx_pools + 1);
John Fastabend2a47fa42013-11-06 09:54:52 -08009816
9817 /* Enable VMDq flag so device will be set in VM mode */
9818 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED;
John Fastabend51f37732013-11-08 00:51:10 -08009819 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
John Fastabend2a47fa42013-11-06 09:54:52 -08009820
John Fastabend2a47fa42013-11-06 09:54:52 -08009821 fwd_adapter->pool = pool;
9822 fwd_adapter->real_adapter = adapter;
Emil Tantilova3b8cb12016-09-22 15:06:52 -07009823
Alexander Duyck16be45b2017-11-22 10:57:23 -08009824 /* Force reinit of ring allocation with VMDQ enabled */
9825 err = ixgbe_setup_tc(pdev, adapter->hw_tcs);
Emil Tantilova3b8cb12016-09-22 15:06:52 -07009826
Alexander Duyck16be45b2017-11-22 10:57:23 -08009827 if (!err && netif_running(pdev))
9828 err = ixgbe_fwd_ring_up(vdev, fwd_adapter);
9829
9830 if (!err)
9831 return fwd_adapter;
9832
John Fastabend2a47fa42013-11-06 09:54:52 -08009833 /* unwind counter and free adapter struct */
9834 netdev_info(pdev,
9835 "%s: dfwd hardware acceleration failed\n", vdev->name);
Alexander Duyck4e039c12017-11-22 10:56:40 -08009836 clear_bit(pool, adapter->fwd_bitmask);
John Fastabend2a47fa42013-11-06 09:54:52 -08009837 kfree(fwd_adapter);
9838 return ERR_PTR(err);
9839}
9840
9841static void ixgbe_fwd_del(struct net_device *pdev, void *priv)
9842{
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08009843 struct ixgbe_fwd_adapter *accel = priv;
9844 struct ixgbe_adapter *adapter = accel->real_adapter;
9845 unsigned int rxbase = accel->rx_base_queue;
9846 unsigned int limit, i;
John Fastabend2a47fa42013-11-06 09:54:52 -08009847
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08009848 /* delete unicast filter associated with offloaded interface */
9849 ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr,
9850 VMDQ_P(accel->pool));
John Fastabend2a47fa42013-11-06 09:54:52 -08009851
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08009852 /* disable ability to receive packets for this pool */
9853 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VMOLR(accel->pool), 0);
9854
9855 /* Allow remaining Rx packets to get flushed out of the
9856 * Rx FIFO before we drop the netdev for the ring.
9857 */
9858 usleep_range(10000, 20000);
9859
9860 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
9861 struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i];
9862 struct ixgbe_q_vector *qv = ring->q_vector;
9863
9864 /* Make sure we aren't processing any packets and clear
9865 * netdev to shut down the ring.
9866 */
9867 if (netif_running(adapter->netdev))
9868 napi_synchronize(&qv->napi);
9869 ring->netdev = NULL;
9870 }
9871
9872 clear_bit(accel->pool, adapter->fwd_bitmask);
Alexander Duyck4e039c12017-11-22 10:56:40 -08009873 limit = find_last_bit(adapter->fwd_bitmask, adapter->num_rx_pools);
John Fastabend51f37732013-11-08 00:51:10 -08009874 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
Shannon Nelsonf5a71ca2017-08-15 08:59:54 -07009875
9876 /* go back to full RSS if we're done with our VMQs */
9877 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
9878 int rss = min_t(int, ixgbe_max_rss_indices(adapter),
9879 num_online_cpus());
9880
9881 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
9882 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
9883 adapter->ring_feature[RING_F_RSS].limit = rss;
9884 }
9885
Alexander Duyck0efbf122017-11-22 10:57:11 -08009886 ixgbe_setup_tc(pdev, adapter->hw_tcs);
Alexander Duyck4e039c12017-11-22 10:56:40 -08009887 netdev_dbg(pdev, "pool %i:%i queues %i:%i\n",
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08009888 accel->pool, adapter->num_rx_pools,
9889 accel->rx_base_queue,
9890 accel->rx_base_queue +
Alexander Duyck4e039c12017-11-22 10:56:40 -08009891 adapter->num_rx_queues_per_pool);
Alexander Duyckb5f69cc2017-11-22 10:57:29 -08009892 kfree(accel);
John Fastabend2a47fa42013-11-06 09:54:52 -08009893}
9894
Alexander Duyckb83e3012016-04-14 17:19:31 -04009895#define IXGBE_MAX_MAC_HDR_LEN 127
9896#define IXGBE_MAX_NETWORK_HDR_LEN 511
9897
Mark Rustadf467bc02015-06-15 11:33:20 -07009898static netdev_features_t
9899ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
9900 netdev_features_t features)
9901{
Alexander Duyckb83e3012016-04-14 17:19:31 -04009902 unsigned int network_hdr_len, mac_hdr_len;
Mark Rustadf467bc02015-06-15 11:33:20 -07009903
Alexander Duyckb83e3012016-04-14 17:19:31 -04009904 /* Make certain the headers can be described by a context descriptor */
9905 mac_hdr_len = skb_network_header(skb) - skb->data;
9906 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN))
9907 return features & ~(NETIF_F_HW_CSUM |
9908 NETIF_F_SCTP_CRC |
9909 NETIF_F_HW_VLAN_CTAG_TX |
9910 NETIF_F_TSO |
9911 NETIF_F_TSO6);
9912
9913 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb);
9914 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN))
9915 return features & ~(NETIF_F_HW_CSUM |
9916 NETIF_F_SCTP_CRC |
9917 NETIF_F_TSO |
9918 NETIF_F_TSO6);
9919
9920 /* We can only support IPV4 TSO in tunnels if we can mangle the
9921 * inner IP ID field, so strip TSO if MANGLEID is not supported.
Shannon Nelson70da6822018-03-16 11:09:07 -07009922 * IPsec offoad sets skb->encapsulation but still can handle
9923 * the TSO, so it's the exception.
Alexander Duyckb83e3012016-04-14 17:19:31 -04009924 */
Shannon Nelson70da6822018-03-16 11:09:07 -07009925 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) {
9926#ifdef CONFIG_XFRM
9927 if (!skb->sp)
9928#endif
9929 features &= ~NETIF_F_TSO;
9930 }
Mark Rustadf467bc02015-06-15 11:33:20 -07009931
9932 return features;
9933}
9934
John Fastabend92470802017-04-24 03:30:17 -07009935static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog)
9936{
9937 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
9938 struct ixgbe_adapter *adapter = netdev_priv(dev);
9939 struct bpf_prog *old_prog;
9940
9941 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
9942 return -EINVAL;
9943
9944 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
9945 return -EINVAL;
9946
9947 /* verify ixgbe ring attributes are sufficient for XDP */
9948 for (i = 0; i < adapter->num_rx_queues; i++) {
9949 struct ixgbe_ring *ring = adapter->rx_ring[i];
9950
9951 if (ring_is_rsc_enabled(ring))
9952 return -EINVAL;
9953
9954 if (frame_size > ixgbe_rx_bufsz(ring))
9955 return -EINVAL;
9956 }
9957
John Fastabend33fdc822017-04-24 03:30:18 -07009958 if (nr_cpu_ids > MAX_XDP_QUEUES)
9959 return -ENOMEM;
9960
John Fastabend92470802017-04-24 03:30:17 -07009961 old_prog = xchg(&adapter->xdp_prog, prog);
John Fastabend33fdc822017-04-24 03:30:18 -07009962
9963 /* If transitioning XDP modes reconfigure rings */
9964 if (!!prog != !!old_prog) {
Alexander Duyck0efbf122017-11-22 10:57:11 -08009965 int err = ixgbe_setup_tc(dev, adapter->hw_tcs);
John Fastabend33fdc822017-04-24 03:30:18 -07009966
9967 if (err) {
9968 rcu_assign_pointer(adapter->xdp_prog, old_prog);
9969 return -EINVAL;
9970 }
9971 } else {
9972 for (i = 0; i < adapter->num_rx_queues; i++)
9973 xchg(&adapter->rx_ring[i]->xdp_prog, adapter->xdp_prog);
9974 }
John Fastabend92470802017-04-24 03:30:17 -07009975
9976 if (old_prog)
9977 bpf_prog_put(old_prog);
9978
9979 return 0;
9980}
9981
Jakub Kicinskif4e63522017-11-03 13:56:16 -07009982static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp)
John Fastabend92470802017-04-24 03:30:17 -07009983{
9984 struct ixgbe_adapter *adapter = netdev_priv(dev);
9985
9986 switch (xdp->command) {
9987 case XDP_SETUP_PROG:
9988 return ixgbe_xdp_setup(dev, xdp->prog);
9989 case XDP_QUERY_PROG:
9990 xdp->prog_attached = !!(adapter->xdp_prog);
Martin KaFai Lau47920932017-06-15 17:29:15 -07009991 xdp->prog_id = adapter->xdp_prog ?
9992 adapter->xdp_prog->aux->id : 0;
John Fastabend92470802017-04-24 03:30:17 -07009993 return 0;
9994 default:
9995 return -EINVAL;
9996 }
9997}
9998
John Fastabend64530732017-07-17 09:28:12 -07009999static int ixgbe_xdp_xmit(struct net_device *dev, struct xdp_buff *xdp)
10000{
10001 struct ixgbe_adapter *adapter = netdev_priv(dev);
10002 struct ixgbe_ring *ring;
10003 int err;
10004
10005 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state)))
Jesper Dangaard Brouer28864472017-08-24 12:33:13 +020010006 return -ENETDOWN;
John Fastabend64530732017-07-17 09:28:12 -070010007
10008 /* During program transitions its possible adapter->xdp_prog is assigned
10009 * but ring has not been configured yet. In this case simply abort xmit.
10010 */
10011 ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL;
10012 if (unlikely(!ring))
Jesper Dangaard Brouer28864472017-08-24 12:33:13 +020010013 return -ENXIO;
John Fastabend64530732017-07-17 09:28:12 -070010014
10015 err = ixgbe_xmit_xdp_ring(adapter, xdp);
10016 if (err != IXGBE_XDP_TX)
Jesper Dangaard Brouerd2cee2e2017-08-17 18:22:32 +020010017 return -ENOSPC;
John Fastabend64530732017-07-17 09:28:12 -070010018
John Fastabend11393cc2017-07-17 09:29:40 -070010019 return 0;
10020}
10021
10022static void ixgbe_xdp_flush(struct net_device *dev)
10023{
10024 struct ixgbe_adapter *adapter = netdev_priv(dev);
10025 struct ixgbe_ring *ring;
10026
10027 /* Its possible the device went down between xdp xmit and flush so
10028 * we need to ensure device is still up.
10029 */
10030 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state)))
10031 return;
10032
10033 ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL;
10034 if (unlikely(!ring))
10035 return;
10036
John Fastabend64530732017-07-17 09:28:12 -070010037 /* Force memory writes to complete before letting h/w know there
10038 * are new descriptors to fetch.
10039 */
10040 wmb();
John Fastabend64530732017-07-17 09:28:12 -070010041 writel(ring->next_to_use, ring->tail);
10042
John Fastabend11393cc2017-07-17 09:29:40 -070010043 return;
John Fastabend64530732017-07-17 09:28:12 -070010044}
10045
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010046static const struct net_device_ops ixgbe_netdev_ops = {
Joe Perchese8e9f692010-09-07 21:34:53 +000010047 .ndo_open = ixgbe_open,
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010048 .ndo_stop = ixgbe_close,
Stephen Hemminger00829822008-11-20 20:14:53 -080010049 .ndo_start_xmit = ixgbe_xmit_frame,
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -070010050 .ndo_select_queue = ixgbe_select_queue,
Alexander Duyck581330b2012-02-08 07:51:47 +000010051 .ndo_set_rx_mode = ixgbe_set_rx_mode,
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010052 .ndo_validate_addr = eth_validate_addr,
10053 .ndo_set_mac_address = ixgbe_set_mac,
10054 .ndo_change_mtu = ixgbe_change_mtu,
10055 .ndo_tx_timeout = ixgbe_tx_timeout,
Rostislav Pehlivanovc04f90e2016-01-27 18:33:30 +000010056 .ndo_set_tx_maxrate = ixgbe_tx_maxrate,
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010057 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
10058 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
Ben Hutchings6b73e102009-04-29 08:08:58 +000010059 .ndo_do_ioctl = ixgbe_ioctl,
Greg Rose7f016482010-05-04 22:12:06 +000010060 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
10061 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
Sucheta Chakrabortyed616682014-05-22 09:59:05 -040010062 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw,
Alexander Duyck581330b2012-02-08 07:51:47 +000010063 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk,
Vlad Zolotarove65ce0d2015-03-30 21:35:24 +030010064 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en,
Hiroshi Shimamoto54011e42015-08-28 06:58:33 +000010065 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust,
Greg Rose7f016482010-05-04 22:12:06 +000010066 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
Eric Dumazetde1036b2010-10-20 23:00:04 +000010067 .ndo_get_stats64 = ixgbe_get_stats64,
John Fastabende4c67342016-02-16 21:16:15 -080010068 .ndo_setup_tc = __ixgbe_setup_tc,
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010069#ifdef CONFIG_NET_POLL_CONTROLLER
10070 .ndo_poll_controller = ixgbe_netpoll,
10071#endif
Yi Zou332d4a72009-05-13 13:11:53 +000010072#ifdef IXGBE_FCOE
10073 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
Yi Zou68a683c2011-02-01 07:22:16 +000010074 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
Yi Zou332d4a72009-05-13 13:11:53 +000010075 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
Yi Zou8450ff82009-08-31 12:32:14 +000010076 .ndo_fcoe_enable = ixgbe_fcoe_enable,
10077 .ndo_fcoe_disable = ixgbe_fcoe_disable,
Yi Zou61a1fa12009-10-28 18:24:56 +000010078 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
Neerav Parikhea818752012-01-04 20:23:40 +000010079 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo,
Yi Zou332d4a72009-05-13 13:11:53 +000010080#endif /* IXGBE_FCOE */
Don Skidmore082757a2011-07-21 05:55:00 +000010081 .ndo_set_features = ixgbe_set_features,
10082 .ndo_fix_features = ixgbe_fix_features,
John Fastabend0f4b0ad2012-04-15 06:44:19 +000010083 .ndo_fdb_add = ixgbe_ndo_fdb_add,
John Fastabend815cccb2012-10-24 08:13:09 +000010084 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink,
10085 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink,
John Fastabend2a47fa42013-11-06 09:54:52 -080010086 .ndo_dfwd_add_station = ixgbe_fwd_add,
10087 .ndo_dfwd_del_station = ixgbe_fwd_del,
Emil Tantilova21d0822016-08-10 11:19:23 -070010088 .ndo_udp_tunnel_add = ixgbe_add_udp_tunnel_port,
10089 .ndo_udp_tunnel_del = ixgbe_del_udp_tunnel_port,
Mark Rustadf467bc02015-06-15 11:33:20 -070010090 .ndo_features_check = ixgbe_features_check,
Jakub Kicinskif4e63522017-11-03 13:56:16 -070010091 .ndo_bpf = ixgbe_xdp,
John Fastabend64530732017-07-17 09:28:12 -070010092 .ndo_xdp_xmit = ixgbe_xdp_xmit,
John Fastabend11393cc2017-07-17 09:29:40 -070010093 .ndo_xdp_flush = ixgbe_xdp_flush,
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010094};
10095
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010096/**
Jacob Kellere027d1a2013-07-31 06:53:31 +000010097 * ixgbe_enumerate_functions - Get the number of ports this device has
10098 * @adapter: adapter structure
10099 *
10100 * This function enumerates the phsyical functions co-located on a single slot,
10101 * in order to determine how many ports a device has. This is most useful in
10102 * determining the required GT/s of PCIe bandwidth necessary for optimal
10103 * performance.
10104 **/
10105static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter)
10106{
Jacob Kellercaafb952014-07-19 07:17:17 +000010107 struct pci_dev *entry, *pdev = adapter->pdev;
Jacob Kellere027d1a2013-07-31 06:53:31 +000010108 int physfns = 0;
10109
Jacob Kellerf1f96572013-08-31 02:45:38 +000010110 /* Some cards can not use the generic count PCIe functions method,
10111 * because they are behind a parent switch, so we hardcode these with
10112 * the correct number of functions.
Jacob Kellere027d1a2013-07-31 06:53:31 +000010113 */
Jacob Keller88189702014-07-19 07:17:16 +000010114 if (ixgbe_pcie_from_parent(&adapter->hw))
Jacob Kellere027d1a2013-07-31 06:53:31 +000010115 physfns = 4;
Jacob Keller88189702014-07-19 07:17:16 +000010116
10117 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) {
10118 /* don't count virtual functions */
Jacob Kellercaafb952014-07-19 07:17:17 +000010119 if (entry->is_virtfn)
10120 continue;
10121
10122 /* When the devices on the bus don't all match our device ID,
10123 * we can't reliably determine the correct number of
10124 * functions. This can occur if a function has been direct
10125 * attached to a virtual machine using VT-d, for example. In
10126 * this case, simply return -1 to indicate this.
10127 */
10128 if ((entry->vendor != pdev->vendor) ||
10129 (entry->device != pdev->device))
10130 return -1;
10131
10132 physfns++;
Jacob Kellere027d1a2013-07-31 06:53:31 +000010133 }
10134
10135 return physfns;
10136}
10137
10138/**
Jacob Keller8e2813f2012-04-21 06:05:40 +000010139 * ixgbe_wol_supported - Check whether device supports WoL
Emil Tantilov740234f2016-04-21 11:37:12 -070010140 * @adapter: the adapter private structure
Jacob Keller8e2813f2012-04-21 06:05:40 +000010141 * @device_id: the device ID
Tony Nguyen5ba643c2017-12-04 11:28:30 -080010142 * @subdevice_id: the subsystem device ID
Jacob Keller8e2813f2012-04-21 06:05:40 +000010143 *
10144 * This function is used by probe and ethtool to determine
10145 * which devices have WoL support
10146 *
10147 **/
Emil Tantilov740234f2016-04-21 11:37:12 -070010148bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
10149 u16 subdevice_id)
Jacob Keller8e2813f2012-04-21 06:05:40 +000010150{
10151 struct ixgbe_hw *hw = &adapter->hw;
10152 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010153
Emil Tantilov740234f2016-04-21 11:37:12 -070010154 /* WOL not supported on 82598 */
10155 if (hw->mac.type == ixgbe_mac_82598EB)
10156 return false;
10157
10158 /* check eeprom to see if WOL is enabled for X540 and newer */
10159 if (hw->mac.type >= ixgbe_mac_X540) {
10160 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) ||
10161 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) &&
10162 (hw->bus.func == 0)))
10163 return true;
10164 }
10165
10166 /* WOL is determined based on device IDs for 82599 MACs */
Jacob Keller8e2813f2012-04-21 06:05:40 +000010167 switch (device_id) {
10168 case IXGBE_DEV_ID_82599_SFP:
10169 /* Only these subdevices could supports WOL */
10170 switch (subdevice_id) {
10171 case IXGBE_SUBDEV_ID_82599_560FLR:
Emil Tantilov00103a6c2016-04-21 11:37:06 -070010172 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6:
10173 case IXGBE_SUBDEV_ID_82599_SFP_WOL0:
10174 case IXGBE_SUBDEV_ID_82599_SFP_2OCP:
Jacob Keller8e2813f2012-04-21 06:05:40 +000010175 /* only support first port */
10176 if (hw->bus.func != 0)
10177 break;
Tony Nguyen93df9462017-05-31 04:43:47 -070010178 /* fall through */
Emil Tantilov5700ff22013-04-18 08:18:55 +000010179 case IXGBE_SUBDEV_ID_82599_SP_560FLR:
Jacob Keller8e2813f2012-04-21 06:05:40 +000010180 case IXGBE_SUBDEV_ID_82599_SFP:
Don Skidmoreb6dfd932012-07-11 07:17:42 +000010181 case IXGBE_SUBDEV_ID_82599_RNDC:
Emil Tantilovf8a06c22012-08-16 08:13:07 +000010182 case IXGBE_SUBDEV_ID_82599_ECNA_DP:
Emil Tantilov00103a6c2016-04-21 11:37:06 -070010183 case IXGBE_SUBDEV_ID_82599_SFP_1OCP:
10184 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1:
10185 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2:
Emil Tantilov740234f2016-04-21 11:37:12 -070010186 return true;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010187 }
10188 break;
Don Skidmore5daebbb2013-04-05 05:49:34 +000010189 case IXGBE_DEV_ID_82599EN_SFP:
Emil Tantilov740234f2016-04-21 11:37:12 -070010190 /* Only these subdevices support WOL */
Don Skidmore5daebbb2013-04-05 05:49:34 +000010191 switch (subdevice_id) {
10192 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1:
Emil Tantilov740234f2016-04-21 11:37:12 -070010193 return true;
Don Skidmore5daebbb2013-04-05 05:49:34 +000010194 }
10195 break;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010196 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
10197 /* All except this subdevice support WOL */
10198 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
Emil Tantilov740234f2016-04-21 11:37:12 -070010199 return true;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010200 break;
10201 case IXGBE_DEV_ID_82599_KX4:
Emil Tantilov740234f2016-04-21 11:37:12 -070010202 return true;
10203 default:
Jacob Keller8e2813f2012-04-21 06:05:40 +000010204 break;
10205 }
10206
Emil Tantilov740234f2016-04-21 11:37:12 -070010207 return false;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010208}
10209
10210/**
Paul Greenwalt73834ae2017-10-27 10:32:40 -040010211 * ixgbe_set_fw_version - Set FW version
10212 * @adapter: the adapter private structure
10213 *
10214 * This function is used by probe and ethtool to determine the FW version to
10215 * format to display. The FW version is taken from the EEPROM/NVM.
10216 */
10217static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter)
10218{
10219 struct ixgbe_hw *hw = &adapter->hw;
10220 struct ixgbe_nvm_version nvm_ver;
10221
10222 ixgbe_get_oem_prod_version(hw, &nvm_ver);
10223 if (nvm_ver.oem_valid) {
10224 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
10225 "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor,
10226 nvm_ver.oem_release);
10227 return;
10228 }
10229
10230 ixgbe_get_etk_id(hw, &nvm_ver);
10231 ixgbe_get_orom_version(hw, &nvm_ver);
10232
10233 if (nvm_ver.or_valid) {
10234 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
10235 "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major,
10236 nvm_ver.or_build, nvm_ver.or_patch);
10237 return;
10238 }
10239
10240 /* Set ETrack ID format */
10241 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
10242 "0x%08x", nvm_ver.etk_id);
10243}
10244
10245/**
Auke Kok9a799d72007-09-15 14:07:45 -070010246 * ixgbe_probe - Device Initialization Routine
10247 * @pdev: PCI device information struct
10248 * @ent: entry in ixgbe_pci_tbl
10249 *
10250 * Returns 0 on success, negative on failure
10251 *
10252 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
10253 * The OS initialization, configuring of the adapter private structure,
10254 * and a hardware reset occur.
10255 **/
Greg Kroah-Hartman1dd06ae2012-12-06 14:30:56 +000010256static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Auke Kok9a799d72007-09-15 14:07:45 -070010257{
10258 struct net_device *netdev;
10259 struct ixgbe_adapter *adapter = NULL;
10260 struct ixgbe_hw *hw;
10261 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
Jacob Kellere027d1a2013-07-31 06:53:31 +000010262 int i, err, pci_using_dac, expected_gts;
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010263 unsigned int indices = MAX_TX_QUEUES;
Don Skidmore289700db2010-12-03 03:32:58 +000010264 u8 part_str[IXGBE_PBANUM_LENGTH];
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010265 bool disable_dev = false;
Yi Zoueacd73f2009-05-13 13:11:06 +000010266#ifdef IXGBE_FCOE
10267 u16 device_caps;
10268#endif
Don Skidmore289700db2010-12-03 03:32:58 +000010269 u32 eec;
Auke Kok9a799d72007-09-15 14:07:45 -070010270
Andy Gospodarekbded64a2010-07-21 06:40:31 +000010271 /* Catch broken hardware that put the wrong VF device ID in
10272 * the PCIe SR-IOV capability.
10273 */
10274 if (pdev->is_virtfn) {
10275 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
10276 pci_name(pdev), pdev->vendor, pdev->device);
10277 return -EINVAL;
10278 }
10279
gouji-new9ce77662009-05-06 10:44:45 +000010280 err = pci_enable_device_mem(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010281 if (err)
10282 return err;
10283
Russell Kingf5f2eda2013-06-10 12:47:42 +010010284 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
Auke Kok9a799d72007-09-15 14:07:45 -070010285 pci_using_dac = 1;
10286 } else {
Russell Kingf5f2eda2013-06-10 12:47:42 +010010287 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -070010288 if (err) {
Russell Kingf5f2eda2013-06-10 12:47:42 +010010289 dev_err(&pdev->dev,
10290 "No usable DMA configuration, aborting\n");
10291 goto err_dma;
Auke Kok9a799d72007-09-15 14:07:45 -070010292 }
10293 pci_using_dac = 0;
10294 }
10295
Johannes Thumshirn56d766d2016-06-07 09:44:05 +020010296 err = pci_request_mem_regions(pdev, ixgbe_driver_name);
Auke Kok9a799d72007-09-15 14:07:45 -070010297 if (err) {
Dan Carpenterb8bc0422010-07-27 00:05:56 +000010298 dev_err(&pdev->dev,
10299 "pci_request_selected_regions failed 0x%x\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -070010300 goto err_pci_reg;
10301 }
10302
Frans Pop19d5afd2009-10-02 10:04:12 -070010303 pci_enable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010304
Auke Kok9a799d72007-09-15 14:07:45 -070010305 pci_set_master(pdev);
Wendy Xiongfb3b27b2008-04-23 11:09:24 -070010306 pci_save_state(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010307
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010308 if (ii->mac == ixgbe_mac_82598EB) {
John Fastabende901acd2011-04-26 07:26:08 +000010309#ifdef CONFIG_IXGBE_DCB
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010310 /* 8 TC w/ 4 queues per TC */
10311 indices = 4 * MAX_TRAFFIC_CLASS;
10312#else
10313 indices = IXGBE_MAX_RSS_INDICES;
John Fastabende901acd2011-04-26 07:26:08 +000010314#endif
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010315 }
John Fastabende901acd2011-04-26 07:26:08 +000010316
John Fastabendc85a2612010-02-25 23:15:21 +000010317 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
Auke Kok9a799d72007-09-15 14:07:45 -070010318 if (!netdev) {
10319 err = -ENOMEM;
10320 goto err_alloc_etherdev;
10321 }
10322
Auke Kok9a799d72007-09-15 14:07:45 -070010323 SET_NETDEV_DEV(netdev, &pdev->dev);
10324
Auke Kok9a799d72007-09-15 14:07:45 -070010325 adapter = netdev_priv(netdev);
10326
10327 adapter->netdev = netdev;
10328 adapter->pdev = pdev;
10329 hw = &adapter->hw;
10330 hw->back = adapter;
stephen hemmingerb3f4d592012-03-13 06:04:20 +000010331 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
Auke Kok9a799d72007-09-15 14:07:45 -070010332
Jeff Kirsher05857982008-09-11 19:57:00 -070010333 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
Joe Perchese8e9f692010-09-07 21:34:53 +000010334 pci_resource_len(pdev, 0));
Mark Rustad2a1a0912014-01-14 18:53:15 -080010335 adapter->io_addr = hw->hw_addr;
Auke Kok9a799d72007-09-15 14:07:45 -070010336 if (!hw->hw_addr) {
10337 err = -EIO;
10338 goto err_ioremap;
10339 }
10340
Stephen Hemminger0edc3522008-11-19 22:24:29 -080010341 netdev->netdev_ops = &ixgbe_netdev_ops;
Auke Kok9a799d72007-09-15 14:07:45 -070010342 ixgbe_set_ethtool_ops(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010343 netdev->watchdog_timeo = 5 * HZ;
Mark Rustad339de302014-06-06 01:57:06 +000010344 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
Auke Kok9a799d72007-09-15 14:07:45 -070010345
Auke Kok9a799d72007-09-15 14:07:45 -070010346 /* Setup hw api */
Mark Rustad37689012016-01-07 10:13:03 -080010347 hw->mac.ops = *ii->mac_ops;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -080010348 hw->mac.type = ii->mac;
Don Skidmore9a900ec2015-06-09 17:15:01 -070010349 hw->mvals = ii->mvals;
Emil Tantilovb71f6c42016-10-10 14:54:03 -070010350 if (ii->link_ops)
10351 hw->link.ops = *ii->link_ops;
Auke Kok9a799d72007-09-15 14:07:45 -070010352
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010353 /* EEPROM */
Mark Rustad37689012016-01-07 10:13:03 -080010354 hw->eeprom.ops = *ii->eeprom_ops;
Don Skidmore9a900ec2015-06-09 17:15:01 -070010355 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
Mark Rustad58cf6632014-03-12 00:38:40 +000010356 if (ixgbe_removed(hw->hw_addr)) {
10357 err = -EIO;
10358 goto err_ioremap;
10359 }
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010360 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
Jacob Kellerb4f47a42016-04-13 16:08:22 -070010361 if (!(eec & BIT(8)))
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010362 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
10363
10364 /* PHY */
Mark Rustad37689012016-01-07 10:13:03 -080010365 hw->phy.ops = *ii->phy_ops;
Donald Skidmorec4900be2008-11-20 21:11:42 -080010366 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
Ben Hutchings6b73e102009-04-29 08:08:58 +000010367 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
10368 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
10369 hw->phy.mdio.mmds = 0;
10370 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
10371 hw->phy.mdio.dev = netdev;
10372 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
10373 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
Donald Skidmorec4900be2008-11-20 21:11:42 -080010374
Auke Kok9a799d72007-09-15 14:07:45 -070010375 /* setup the private structure */
Emil Tantilov55570b62016-10-12 12:34:25 -070010376 err = ixgbe_sw_init(adapter, ii);
Auke Kok9a799d72007-09-15 14:07:45 -070010377 if (err)
10378 goto err_sw_init;
10379
Don Skidmoredbd15b82016-03-09 16:45:00 -050010380 /* Make sure the SWFW semaphore is in a valid state */
10381 if (hw->mac.ops.init_swfw_sync)
10382 hw->mac.ops.init_swfw_sync(hw);
10383
Don Skidmoree86bff02010-02-11 04:14:08 +000010384 /* Make it possible the adapter to be woken up via WOL */
Don Skidmoreb93a2222010-11-16 19:27:17 -080010385 switch (adapter->hw.mac.type) {
10386 case ixgbe_mac_82599EB:
10387 case ixgbe_mac_X540:
Don Skidmore9a75a1a2014-11-07 03:53:35 +000010388 case ixgbe_mac_X550:
10389 case ixgbe_mac_X550EM_x:
Mark Rustad49425df2016-04-01 12:18:09 -070010390 case ixgbe_mac_x550em_a:
Don Skidmoree86bff02010-02-11 04:14:08 +000010391 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Don Skidmoreb93a2222010-11-16 19:27:17 -080010392 break;
10393 default:
10394 break;
10395 }
Don Skidmoree86bff02010-02-11 04:14:08 +000010396
Don Skidmorebf069c92009-05-07 10:39:54 +000010397 /*
10398 * If there is a fan on this device and it has failed log the
10399 * failure.
10400 */
10401 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
10402 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
10403 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +000010404 e_crit(probe, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +000010405 }
10406
Peter P Waskiewicz Jr8ef78ad2012-02-01 09:19:21 +000010407 if (allow_unsupported_sfp)
10408 hw->allow_unsupported_sfp = allow_unsupported_sfp;
10409
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010410 /* reset_hw fills in the perm_addr as well */
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -070010411 hw->phy.reset_if_overtemp = true;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010412 err = hw->mac.ops.reset_hw(hw);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -070010413 hw->phy.reset_if_overtemp = false;
Mark Rustadb3eb4e12016-12-14 11:02:16 -080010414 ixgbe_set_eee_capable(adapter);
Mark Rustad29a8dca2015-08-08 16:17:46 -070010415 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
Don Skidmore8ca783a2009-05-26 20:40:47 -070010416 err = 0;
10417 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore1b1bf312013-07-31 05:27:04 +000010418 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
10419 e_dev_err("Reload the driver after installing a supported module.\n");
PJ Waskiewicz04f165e2009-04-09 22:27:57 +000010420 goto err_sw_init;
10421 } else if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +000010422 e_dev_err("HW Init failed: %d\n", err);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010423 goto err_sw_init;
10424 }
10425
Alexander Duyck99d74482012-05-09 08:09:25 +000010426#ifdef CONFIG_PCI_IOV
Greg Rose60a1a682012-12-11 08:26:33 +000010427 /* SR-IOV not supported on the 82598 */
10428 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
10429 goto skip_sriov;
10430 /* Mailbox */
10431 ixgbe_init_mbx_params_pf(hw);
Mark Rustad37689012016-01-07 10:13:03 -080010432 hw->mbx.ops = ii->mbx_ops;
ethan.zhaodcc23e32014-01-16 19:41:04 -080010433 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT);
Emil Tantilov5c11f002017-01-20 14:11:56 -080010434 ixgbe_enable_sriov(adapter, max_vfs);
Greg Rose60a1a682012-12-11 08:26:33 +000010435skip_sriov:
Greg Rose1cdd1ec2010-01-09 02:26:46 +000010436
Alexander Duyck99d74482012-05-09 08:09:25 +000010437#endif
Emil Tantilov396e7992010-07-01 20:05:12 +000010438 netdev->features = NETIF_F_SG |
Don Skidmore082757a2011-07-21 05:55:00 +000010439 NETIF_F_TSO |
10440 NETIF_F_TSO6 |
Don Skidmore082757a2011-07-21 05:55:00 +000010441 NETIF_F_RXHASH |
Alexander Duyck49763de2016-01-13 07:31:11 -080010442 NETIF_F_RXCSUM |
Alexander Duyckb83e3012016-04-14 17:19:31 -040010443 NETIF_F_HW_CSUM;
10444
10445#define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
10446 NETIF_F_GSO_GRE_CSUM | \
Tom Herbert7e133182016-05-18 09:06:10 -070010447 NETIF_F_GSO_IPXIP4 | \
Alexander Duyckbf2d1df2016-05-18 10:44:53 -070010448 NETIF_F_GSO_IPXIP6 | \
Alexander Duyckb83e3012016-04-14 17:19:31 -040010449 NETIF_F_GSO_UDP_TUNNEL | \
10450 NETIF_F_GSO_UDP_TUNNEL_CSUM)
10451
10452 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES;
10453 netdev->features |= NETIF_F_GSO_PARTIAL |
10454 IXGBE_GSO_PARTIAL_FEATURES;
Auke Kok9a799d72007-09-15 14:07:45 -070010455
Alexander Duyck49763de2016-01-13 07:31:11 -080010456 if (hw->mac.type >= ixgbe_mac_82599EB)
Tom Herbert53692b12015-12-14 11:19:41 -080010457 netdev->features |= NETIF_F_SCTP_CRC;
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +000010458
Alexander Duyck49763de2016-01-13 07:31:11 -080010459 /* copy netdev features into list of user selectable features */
Alexander Duyckb83e3012016-04-14 17:19:31 -040010460 netdev->hw_features |= netdev->features |
Alexander Duyck3d951822016-08-12 09:53:39 -070010461 NETIF_F_HW_VLAN_CTAG_FILTER |
Alexander Duyckb83e3012016-04-14 17:19:31 -040010462 NETIF_F_HW_VLAN_CTAG_RX |
10463 NETIF_F_HW_VLAN_CTAG_TX |
10464 NETIF_F_RXALL |
Alexander Duyck49763de2016-01-13 07:31:11 -080010465 NETIF_F_HW_L2FW_DOFFLOAD;
10466
10467 if (hw->mac.type >= ixgbe_mac_82599EB)
10468 netdev->hw_features |= NETIF_F_NTUPLE |
10469 NETIF_F_HW_TC;
10470
Alexander Duyckb83e3012016-04-14 17:19:31 -040010471 if (pci_using_dac)
10472 netdev->features |= NETIF_F_HIGHDMA;
Jeff Kirsherad31c402008-06-05 04:05:30 -070010473
Alexander Duyck5eee87c2016-05-11 13:23:34 -070010474 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
10475 netdev->hw_enc_features |= netdev->vlan_features;
Scott Peterson2a205252016-11-18 11:25:42 -080010476 netdev->mpls_features |= NETIF_F_SG |
10477 NETIF_F_TSO |
10478 NETIF_F_TSO6 |
10479 NETIF_F_HW_CSUM;
10480 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES;
Alexander Duyck5eee87c2016-05-11 13:23:34 -070010481
Alexander Duyckb83e3012016-04-14 17:19:31 -040010482 /* set this bit last since it cannot be part of vlan_features */
10483 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
10484 NETIF_F_HW_VLAN_CTAG_RX |
10485 NETIF_F_HW_VLAN_CTAG_TX;
10486
Jiri Pirko01789342011-08-16 06:29:00 +000010487 netdev->priv_flags |= IFF_UNICAST_FLT;
Ben Greearf43f3132012-03-06 09:42:04 +000010488 netdev->priv_flags |= IFF_SUPP_NOFCS;
Jiri Pirko01789342011-08-16 06:29:00 +000010489
Jarod Wilson91c527a2016-10-17 15:54:05 -040010490 /* MTU range: 68 - 9710 */
10491 netdev->min_mtu = ETH_MIN_MTU;
10492 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN);
10493
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -080010494#ifdef CONFIG_IXGBE_DCB
Usha Ketineni88290092016-04-26 05:00:26 -070010495 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE)
Stephen Hemminger3f40c742016-11-21 09:52:40 -080010496 netdev->dcbnl_ops = &ixgbe_dcbnl_ops;
Alexander Duyck2f90b862008-11-20 20:52:10 -080010497#endif
10498
Yi Zoueacd73f2009-05-13 13:11:06 +000010499#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +000010500 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010501 unsigned int fcoe_l;
10502
Yi Zoueacd73f2009-05-13 13:11:06 +000010503 if (hw->mac.ops.get_device_caps) {
10504 hw->mac.ops.get_device_caps(hw, &device_caps);
Yi Zou0d551582009-07-22 14:07:12 +000010505 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
10506 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
Yi Zoueacd73f2009-05-13 13:11:06 +000010507 }
Alexander Duyck7c8ae652012-05-05 05:32:47 +000010508
Alexander Duyckd3cb9862013-01-16 01:35:35 +000010509
10510 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus());
10511 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l;
Alexander Duyck7c8ae652012-05-05 05:32:47 +000010512
Alexander Duycka58915c2012-05-25 06:38:18 +000010513 netdev->features |= NETIF_F_FSO |
10514 NETIF_F_FCOE_CRC;
10515
Alexander Duyck7c8ae652012-05-05 05:32:47 +000010516 netdev->vlan_features |= NETIF_F_FSO |
10517 NETIF_F_FCOE_CRC |
10518 NETIF_F_FCOE_MTU;
Yi Zou5e09d7f2010-07-19 13:59:52 +000010519 }
Yi Zoueacd73f2009-05-13 13:11:06 +000010520#endif /* IXGBE_FCOE */
Shannon Nelson8bbbc5e2017-12-19 15:59:54 -080010521 ixgbe_init_ipsec_offload(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -070010522
Don Skidmore082757a2011-07-21 05:55:00 +000010523 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
10524 netdev->hw_features |= NETIF_F_LRO;
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +000010525 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Alexander Duyckf8212f92009-04-27 22:42:37 +000010526 netdev->features |= NETIF_F_LRO;
10527
Auke Kok9a799d72007-09-15 14:07:45 -070010528 /* make sure the EEPROM is good */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -070010529 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
Emil Tantilov849c4542010-06-03 16:53:41 +000010530 e_dev_err("The EEPROM Checksum Is Not Valid\n");
Auke Kok9a799d72007-09-15 14:07:45 -070010531 err = -EIO;
Alexander Duyck35937c02012-02-08 07:51:37 +000010532 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -070010533 }
10534
Sowmini Varadhanc7374b52016-01-12 19:32:30 -080010535 eth_platform_get_mac_address(&adapter->pdev->dev,
10536 adapter->hw.mac.perm_addr);
Martin K Petersenc762dff2014-11-15 14:24:51 +000010537
Auke Kok9a799d72007-09-15 14:07:45 -070010538 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -070010539
Jiri Pirkoaaeb6cd2013-01-08 01:38:26 +000010540 if (!is_valid_ether_addr(netdev->dev_addr)) {
Emil Tantilov849c4542010-06-03 16:53:41 +000010541 e_dev_err("invalid MAC address\n");
Auke Kok9a799d72007-09-15 14:07:45 -070010542 err = -EIO;
Alexander Duyck35937c02012-02-08 07:51:37 +000010543 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -070010544 }
10545
Tushar Dave56768042016-01-07 14:17:03 -080010546 /* Set hw->mac.addr to permanent MAC address */
10547 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr);
Alexander Duyckc9f53e62015-10-22 16:26:30 -070010548 ixgbe_mac_set_default_filter(adapter);
Jacob Keller5d7daa32014-03-29 06:51:25 +000010549
Kees Cook26566ea2017-10-16 17:29:35 -070010550 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0);
Auke Kok9a799d72007-09-15 14:07:45 -070010551
Mark Rustad58cf6632014-03-12 00:38:40 +000010552 if (ixgbe_removed(hw->hw_addr)) {
10553 err = -EIO;
10554 goto err_sw_init;
10555 }
Alexander Duyck70864002011-04-27 09:13:56 +000010556 INIT_WORK(&adapter->service_task, ixgbe_service_task);
Mark Rustad58cf6632014-03-12 00:38:40 +000010557 set_bit(__IXGBE_SERVICE_INITED, &adapter->state);
Alexander Duyck70864002011-04-27 09:13:56 +000010558 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -070010559
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -080010560 err = ixgbe_init_interrupt_scheme(adapter);
10561 if (err)
10562 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -070010563
Liwei Songb09457e2016-12-04 22:40:44 -050010564 for (i = 0; i < adapter->num_rx_queues; i++)
10565 u64_stats_init(&adapter->rx_ring[i]->syncp);
10566 for (i = 0; i < adapter->num_tx_queues; i++)
10567 u64_stats_init(&adapter->tx_ring[i]->syncp);
John Fastabend33fdc822017-04-24 03:30:18 -070010568 for (i = 0; i < adapter->num_xdp_queues; i++)
10569 u64_stats_init(&adapter->xdp_ring[i]->syncp);
10570
Jacob Keller8e2813f2012-04-21 06:05:40 +000010571 /* WOL not supported for all devices */
Emil Tantilovc23f5b62011-08-16 07:34:18 +000010572 adapter->wol = 0;
Jacob Keller8e2813f2012-04-21 06:05:40 +000010573 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap);
Jacob Keller6b92b0b2013-04-13 05:40:37 +000010574 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device,
Don Skidmoreb8f83632013-02-28 08:08:44 +000010575 pdev->subsystem_device);
Jacob Keller6b92b0b2013-04-13 05:40:37 +000010576 if (hw->wol_enabled)
Andy Gospodarek9417c462011-07-16 07:31:33 +000010577 adapter->wol = IXGBE_WUFC_MAG;
Emil Tantilovc23f5b62011-08-16 07:34:18 +000010578
PJ Waskiewicze8e26352009-02-27 15:45:05 +000010579 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
10580
Emil Tantilov15e52092011-09-29 05:01:29 +000010581 /* save off EEPROM version number */
Paul Greenwalt73834ae2017-10-27 10:32:40 -040010582 ixgbe_set_fw_version(adapter);
Emil Tantilov15e52092011-09-29 05:01:29 +000010583
PJ Waskiewicz04f165e2009-04-09 22:27:57 +000010584 /* pick up the PCI bus settings for reporting later */
Jacob Kellere027d1a2013-07-31 06:53:31 +000010585 if (ixgbe_pcie_from_parent(hw))
Jacob Kellerb8e82002013-04-09 07:20:09 +000010586 ixgbe_get_parent_bus_info(adapter);
Don Skidmoref9328bc2015-06-18 13:24:06 -040010587 else
10588 hw->mac.ops.get_bus_info(hw);
PJ Waskiewicz04f165e2009-04-09 22:27:57 +000010589
Jacob Kellere027d1a2013-07-31 06:53:31 +000010590 /* calculate the expected PCIe bandwidth required for optimal
10591 * performance. Note that some older parts will never have enough
10592 * bandwidth due to being older generation PCIe parts. We clamp these
10593 * parts to ensure no warning is displayed if it can't be fixed.
10594 */
10595 switch (hw->mac.type) {
10596 case ixgbe_mac_82598EB:
10597 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16);
10598 break;
10599 default:
10600 expected_gts = ixgbe_enumerate_functions(adapter) * 10;
10601 break;
Auke Kok0c254d82008-02-11 09:25:56 -080010602 }
Jacob Kellercaafb952014-07-19 07:17:17 +000010603
10604 /* don't check link if we failed to enumerate functions */
10605 if (expected_gts > 0)
10606 ixgbe_check_minimum_link(adapter, expected_gts);
Auke Kok0c254d82008-02-11 09:25:56 -080010607
Mark Rustad339de302014-06-06 01:57:06 +000010608 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str));
Jacob Keller6a2aae52013-10-18 05:09:24 +000010609 if (err)
Mark Rustad339de302014-06-06 01:57:06 +000010610 strlcpy(part_str, "Unknown", sizeof(part_str));
Jacob Keller6a2aae52013-10-18 05:09:24 +000010611 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
10612 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
10613 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
Jacob Kellere7cf7452014-04-09 06:03:10 +000010614 part_str);
Jacob Keller6a2aae52013-10-18 05:09:24 +000010615 else
10616 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
10617 hw->mac.type, hw->phy.type, part_str);
10618
10619 e_dev_info("%pM\n", netdev->dev_addr);
10620
Auke Kok9a799d72007-09-15 14:07:45 -070010621 /* reset the hardware with the new settings */
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +000010622 err = hw->mac.ops.start_hw(hw);
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +000010623 if (err == IXGBE_ERR_EEPROM_VERSION) {
10624 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +000010625 e_dev_warn("This device is a pre-production adapter/LOM. "
10626 "Please be aware there may be issues associated "
10627 "with your hardware. If you are experiencing "
10628 "problems please contact your Intel or hardware "
10629 "representative who provided you with this "
10630 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +000010631 }
Auke Kok9a799d72007-09-15 14:07:45 -070010632 strcpy(netdev->name, "eth%d");
Jeff Mahoneya09c0fc2017-06-03 18:01:17 -040010633 pci_set_drvdata(pdev, adapter);
Auke Kok9a799d72007-09-15 14:07:45 -070010634 err = register_netdev(netdev);
10635 if (err)
10636 goto err_register;
10637
Emil Tantilov0fb6a552014-12-04 03:03:38 +000010638
Emil Tantilovec74a472012-09-20 03:33:56 +000010639 /* power down the optics for 82599 SFP+ fiber */
10640 if (hw->mac.ops.disable_tx_laser)
Emil Tantilov93d3ce82011-10-19 07:59:55 +000010641 hw->mac.ops.disable_tx_laser(hw);
10642
Jesse Brandeburg54386462009-04-17 20:44:27 +000010643 /* carrier off reporting is important to ethtool even BEFORE open */
10644 netif_carrier_off(netdev);
10645
Jeff Garzik5dd2d332008-10-16 05:09:31 -040010646#ifdef CONFIG_IXGBE_DCA
Denis V. Lunev652f0932008-03-27 14:39:17 +030010647 if (dca_add_requester(&pdev->dev) == 0) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -080010648 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -080010649 ixgbe_setup_dca(adapter);
10650 }
10651#endif
Greg Rose1cdd1ec2010-01-09 02:26:46 +000010652 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
Emil Tantilov396e7992010-07-01 20:05:12 +000010653 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
Greg Rose1cdd1ec2010-01-09 02:26:46 +000010654 for (i = 0; i < adapter->num_vfs; i++)
10655 ixgbe_vf_configuration(pdev, (i | 0x10000000));
10656 }
10657
Jacob Keller2466dd92011-09-08 03:50:54 +000010658 /* firmware requires driver version to be 0xFFFFFFFF
10659 * since os does not support feature
10660 */
Emil Tantilov9612de92011-05-07 07:40:20 +000010661 if (hw->mac.ops.set_fw_drv_ver)
Tony Nguyencb8e0512016-10-26 16:25:18 -070010662 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF,
10663 sizeof(ixgbe_driver_version) - 1,
10664 ixgbe_driver_version);
Emil Tantilov9612de92011-05-07 07:40:20 +000010665
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +000010666 /* add san mac addr to netdev */
10667 ixgbe_add_sanmac_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010668
Neerav Parikhea818752012-01-04 20:23:40 +000010669 e_dev_info("%s\n", ixgbe_default_device_descr);
Don Skidmore3ca8bc62012-04-12 00:33:31 +000010670
Don Skidmore12109822012-05-04 06:07:08 +000010671#ifdef CONFIG_IXGBE_HWMON
Don Skidmore3ca8bc62012-04-12 00:33:31 +000010672 if (ixgbe_sysfs_init(adapter))
10673 e_err(probe, "failed to allocate sysfs resources\n");
Don Skidmore12109822012-05-04 06:07:08 +000010674#endif /* CONFIG_IXGBE_HWMON */
Don Skidmore3ca8bc62012-04-12 00:33:31 +000010675
Catherine Sullivan00949162012-08-10 01:59:10 +000010676 ixgbe_dbg_adapter_init(adapter);
Catherine Sullivan00949162012-08-10 01:59:10 +000010677
Emil Tantilovd1a35ee2014-05-13 08:24:00 +000010678 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
10679 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link)
Don Skidmore0b2679d2013-02-21 03:00:04 +000010680 hw->mac.ops.setup_link(hw,
10681 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL,
10682 true);
10683
Auke Kok9a799d72007-09-15 14:07:45 -070010684 return 0;
10685
10686err_register:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -080010687 ixgbe_release_hw_control(adapter);
Alexander Duyck7a921c92009-05-06 10:43:28 +000010688 ixgbe_clear_interrupt_scheme(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -070010689err_sw_init:
Alexander Duyck99d74482012-05-09 08:09:25 +000010690 ixgbe_disable_sriov(adapter);
Alexander Duyck70864002011-04-27 09:13:56 +000010691 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
Mark Rustad2a1a0912014-01-14 18:53:15 -080010692 iounmap(adapter->io_addr);
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -040010693 kfree(adapter->jump_tables[0]);
Jacob Keller5d7daa32014-03-29 06:51:25 +000010694 kfree(adapter->mac_table);
Tony Nguyen3dfbfc72017-04-13 07:26:05 -070010695 kfree(adapter->rss_key);
Auke Kok9a799d72007-09-15 14:07:45 -070010696err_ioremap:
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010697 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -070010698 free_netdev(netdev);
10699err_alloc_etherdev:
Johannes Thumshirn56d766d2016-06-07 09:44:05 +020010700 pci_release_mem_regions(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010701err_pci_reg:
10702err_dma:
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010703 if (!adapter || disable_dev)
Mark Rustad41c62842014-03-12 00:38:35 +000010704 pci_disable_device(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010705 return err;
10706}
10707
10708/**
10709 * ixgbe_remove - Device Removal Routine
10710 * @pdev: PCI device information struct
10711 *
10712 * ixgbe_remove is called by the PCI subsystem to alert the driver
10713 * that it should release a PCI device. The could be caused by a
10714 * Hot-Plug event, or because the driver is going to be removed from
10715 * memory.
10716 **/
Bill Pemberton9f9a12f2012-12-03 09:24:25 -050010717static void ixgbe_remove(struct pci_dev *pdev)
Auke Kok9a799d72007-09-15 14:07:45 -070010718{
Alexander Duyckc60fbb02010-11-16 19:26:54 -080010719 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
Emil Tantilov0fb6a552014-12-04 03:03:38 +000010720 struct net_device *netdev;
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010721 bool disable_dev;
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -040010722 int i;
Auke Kok9a799d72007-09-15 14:07:45 -070010723
Emil Tantilov0fb6a552014-12-04 03:03:38 +000010724 /* if !adapter then we already cleaned up in probe */
10725 if (!adapter)
10726 return;
10727
10728 netdev = adapter->netdev;
Catherine Sullivan00949162012-08-10 01:59:10 +000010729 ixgbe_dbg_adapter_exit(adapter);
Catherine Sullivan00949162012-08-10 01:59:10 +000010730
Mark Rustad09f40ae2014-01-14 18:53:11 -080010731 set_bit(__IXGBE_REMOVING, &adapter->state);
Alexander Duyck70864002011-04-27 09:13:56 +000010732 cancel_work_sync(&adapter->service_task);
Auke Kok9a799d72007-09-15 14:07:45 -070010733
Jacob Keller3a6a4ed2012-05-01 05:24:58 +000010734
Jeff Garzik5dd2d332008-10-16 05:09:31 -040010735#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -080010736 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
10737 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
10738 dca_remove_requester(&pdev->dev);
Mark Rustad9de76052015-08-08 16:27:41 -070010739 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
10740 IXGBE_DCA_CTRL_DCA_DISABLE);
Jeb Cramerbd0362d2008-03-03 15:04:02 -080010741 }
10742
10743#endif
Don Skidmore12109822012-05-04 06:07:08 +000010744#ifdef CONFIG_IXGBE_HWMON
Don Skidmore3ca8bc62012-04-12 00:33:31 +000010745 ixgbe_sysfs_exit(adapter);
Don Skidmore12109822012-05-04 06:07:08 +000010746#endif /* CONFIG_IXGBE_HWMON */
Don Skidmore3ca8bc62012-04-12 00:33:31 +000010747
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +000010748 /* remove the added san mac */
10749 ixgbe_del_sanmac_netdev(netdev);
10750
Greg Roseda36b642012-12-11 08:26:43 +000010751#ifdef CONFIG_PCI_IOV
Alex Williamson7837e282015-07-10 15:31:34 -060010752 ixgbe_disable_sriov(adapter);
Greg Roseda36b642012-12-11 08:26:43 +000010753#endif
Alex Williamson6b010e92015-07-29 14:38:21 -060010754 if (netdev->reg_state == NETREG_REGISTERED)
10755 unregister_netdev(netdev);
10756
Shannon Nelson63a67fe2017-12-19 15:59:57 -080010757 ixgbe_stop_ipsec_offload(adapter);
Alexander Duyck7a921c92009-05-06 10:43:28 +000010758 ixgbe_clear_interrupt_scheme(adapter);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -080010759
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -080010760 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -070010761
Alexander Duyck2b1588c2012-03-17 02:39:16 +000010762#ifdef CONFIG_DCB
10763 kfree(adapter->ixgbe_ieee_pfc);
10764 kfree(adapter->ixgbe_ieee_ets);
10765
10766#endif
Mark Rustad2a1a0912014-01-14 18:53:15 -080010767 iounmap(adapter->io_addr);
Johannes Thumshirn56d766d2016-06-07 09:44:05 +020010768 pci_release_mem_regions(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010769
Emil Tantilov849c4542010-06-03 16:53:41 +000010770 e_dev_info("complete\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -080010771
Amritha Nambiar1cdaaf52016-04-14 19:08:53 -040010772 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) {
10773 if (adapter->jump_tables[i]) {
10774 kfree(adapter->jump_tables[i]->input);
10775 kfree(adapter->jump_tables[i]->mask);
10776 }
10777 kfree(adapter->jump_tables[i]);
10778 }
10779
Jacob Keller5d7daa32014-03-29 06:51:25 +000010780 kfree(adapter->mac_table);
Tony Nguyen3dfbfc72017-04-13 07:26:05 -070010781 kfree(adapter->rss_key);
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010782 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -070010783 free_netdev(netdev);
10784
Frans Pop19d5afd2009-10-02 10:04:12 -070010785 pci_disable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010786
Daniel Borkmannb5b2ffc2014-11-21 23:52:53 -080010787 if (disable_dev)
Mark Rustad41c62842014-03-12 00:38:35 +000010788 pci_disable_device(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010789}
10790
10791/**
10792 * ixgbe_io_error_detected - called when PCI error is detected
10793 * @pdev: Pointer to PCI device
10794 * @state: The current pci connection state
10795 *
10796 * This function is called after a PCI bus error affecting
10797 * this device has been detected.
10798 */
10799static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +000010800 pci_channel_state_t state)
Auke Kok9a799d72007-09-15 14:07:45 -070010801{
Alexander Duyckc60fbb02010-11-16 19:26:54 -080010802 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
10803 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -070010804
Greg Rose83c61fa2011-09-07 05:59:35 +000010805#ifdef CONFIG_PCI_IOV
Mark Rustad14438462014-02-28 15:48:57 -080010806 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose83c61fa2011-09-07 05:59:35 +000010807 struct pci_dev *bdev, *vfdev;
10808 u32 dw0, dw1, dw2, dw3;
10809 int vf, pos;
10810 u16 req_id, pf_func;
10811
10812 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
10813 adapter->num_vfs == 0)
10814 goto skip_bad_vf_detection;
10815
10816 bdev = pdev->bus->self;
Yijing Wang62f87c02012-07-24 17:20:03 +080010817 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT))
Greg Rose83c61fa2011-09-07 05:59:35 +000010818 bdev = bdev->bus->self;
10819
10820 if (!bdev)
10821 goto skip_bad_vf_detection;
10822
10823 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR);
10824 if (!pos)
10825 goto skip_bad_vf_detection;
10826
Mark Rustad14438462014-02-28 15:48:57 -080010827 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG);
10828 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4);
10829 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8);
10830 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12);
10831 if (ixgbe_removed(hw->hw_addr))
10832 goto skip_bad_vf_detection;
Greg Rose83c61fa2011-09-07 05:59:35 +000010833
10834 req_id = dw1 >> 16;
10835 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
10836 if (!(req_id & 0x0080))
10837 goto skip_bad_vf_detection;
10838
10839 pf_func = req_id & 0x01;
10840 if ((pf_func & 1) == (pdev->devfn & 1)) {
10841 unsigned int device_id;
10842
10843 vf = (req_id & 0x7F) >> 1;
10844 e_dev_err("VF %d has caused a PCIe error\n", vf);
10845 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
10846 "%8.8x\tdw3: %8.8x\n",
10847 dw0, dw1, dw2, dw3);
10848 switch (adapter->hw.mac.type) {
10849 case ixgbe_mac_82599EB:
10850 device_id = IXGBE_82599_VF_DEVICE_ID;
10851 break;
10852 case ixgbe_mac_X540:
10853 device_id = IXGBE_X540_VF_DEVICE_ID;
10854 break;
Don Skidmore9a75a1a2014-11-07 03:53:35 +000010855 case ixgbe_mac_X550:
10856 device_id = IXGBE_DEV_ID_X550_VF;
10857 break;
10858 case ixgbe_mac_X550EM_x:
10859 device_id = IXGBE_DEV_ID_X550EM_X_VF;
10860 break;
Mark Rustad49425df2016-04-01 12:18:09 -070010861 case ixgbe_mac_x550em_a:
10862 device_id = IXGBE_DEV_ID_X550EM_A_VF;
10863 break;
Greg Rose83c61fa2011-09-07 05:59:35 +000010864 default:
10865 device_id = 0;
10866 break;
10867 }
10868
10869 /* Find the pci device of the offending VF */
Jon Mason36e90312012-07-19 21:02:09 +000010870 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL);
Greg Rose83c61fa2011-09-07 05:59:35 +000010871 while (vfdev) {
10872 if (vfdev->devfn == (req_id & 0xFF))
10873 break;
Jon Mason36e90312012-07-19 21:02:09 +000010874 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
Greg Rose83c61fa2011-09-07 05:59:35 +000010875 device_id, vfdev);
10876 }
10877 /*
10878 * There's a slim chance the VF could have been hot plugged,
10879 * so if it is no longer present we don't need to issue the
10880 * VFLR. Just clean up the AER in that case.
10881 */
10882 if (vfdev) {
Christoph Hellwig63af8f72017-04-14 21:11:28 +020010883 pcie_flr(vfdev);
Greg Roseb4fafbe2012-12-13 01:14:06 +000010884 /* Free device reference count */
10885 pci_dev_put(vfdev);
Greg Rose83c61fa2011-09-07 05:59:35 +000010886 }
10887
10888 pci_cleanup_aer_uncorrect_error_status(pdev);
10889 }
10890
10891 /*
10892 * Even though the error may have occurred on the other port
10893 * we still need to increment the vf error reference count for
10894 * both ports because the I/O resume function will be called
10895 * for both of them.
10896 */
10897 adapter->vferr_refcount++;
10898
10899 return PCI_ERS_RESULT_RECOVERED;
10900
10901skip_bad_vf_detection:
10902#endif /* CONFIG_PCI_IOV */
Mark Rustad58cf6632014-03-12 00:38:40 +000010903 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
10904 return PCI_ERS_RESULT_DISCONNECT;
10905
Emil Tantilovb64666a2017-09-29 10:55:42 -070010906 if (!netif_device_present(netdev))
10907 return PCI_ERS_RESULT_DISCONNECT;
10908
Mark Rustad41c62842014-03-12 00:38:35 +000010909 rtnl_lock();
Auke Kok9a799d72007-09-15 14:07:45 -070010910 netif_device_detach(netdev);
10911
Mark Rustad41c62842014-03-12 00:38:35 +000010912 if (state == pci_channel_io_perm_failure) {
10913 rtnl_unlock();
Breno Leitao3044b8d2009-05-06 10:44:26 +000010914 return PCI_ERS_RESULT_DISCONNECT;
Mark Rustad41c62842014-03-12 00:38:35 +000010915 }
Breno Leitao3044b8d2009-05-06 10:44:26 +000010916
Auke Kok9a799d72007-09-15 14:07:45 -070010917 if (netif_running(netdev))
Emil Tantilov126db132016-11-16 09:48:02 -080010918 ixgbe_close_suspend(adapter);
Mark Rustad41c62842014-03-12 00:38:35 +000010919
10920 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
10921 pci_disable_device(pdev);
10922 rtnl_unlock();
Auke Kok9a799d72007-09-15 14:07:45 -070010923
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070010924 /* Request a slot reset. */
Auke Kok9a799d72007-09-15 14:07:45 -070010925 return PCI_ERS_RESULT_NEED_RESET;
10926}
10927
10928/**
10929 * ixgbe_io_slot_reset - called after the pci bus has been reset.
10930 * @pdev: Pointer to PCI device
10931 *
10932 * Restart the card from scratch, as if from a cold-boot.
10933 */
10934static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
10935{
Alexander Duyckc60fbb02010-11-16 19:26:54 -080010936 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010937 pci_ers_result_t result;
10938 int err;
Auke Kok9a799d72007-09-15 14:07:45 -070010939
gouji-new9ce77662009-05-06 10:44:45 +000010940 if (pci_enable_device_mem(pdev)) {
Emil Tantilov396e7992010-07-01 20:05:12 +000010941 e_err(probe, "Cannot re-enable PCI device after reset.\n");
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010942 result = PCI_ERS_RESULT_DISCONNECT;
10943 } else {
Peter Zijlstra4e857c52014-03-17 18:06:10 +010010944 smp_mb__before_atomic();
Mark Rustad41c62842014-03-12 00:38:35 +000010945 clear_bit(__IXGBE_DISABLED, &adapter->state);
Mark Rustad0391bbe2014-02-28 15:48:55 -080010946 adapter->hw.hw_addr = adapter->io_addr;
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010947 pci_set_master(pdev);
10948 pci_restore_state(pdev);
Breno Leitaoc0e1f682009-11-10 08:37:47 +000010949 pci_save_state(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010950
Don Skidmoredd4d8ca2009-04-29 00:22:31 -070010951 pci_wake_from_d3(pdev, false);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010952
10953 ixgbe_reset(adapter);
PJ Waskiewicz88512532009-03-13 22:15:10 +000010954 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010955 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9a799d72007-09-15 14:07:45 -070010956 }
Auke Kok9a799d72007-09-15 14:07:45 -070010957
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010958 err = pci_cleanup_aer_uncorrect_error_status(pdev);
10959 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +000010960 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
10961 "failed 0x%0x\n", err);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010962 /* non-fatal, continue */
10963 }
Auke Kok9a799d72007-09-15 14:07:45 -070010964
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -080010965 return result;
Auke Kok9a799d72007-09-15 14:07:45 -070010966}
10967
10968/**
10969 * ixgbe_io_resume - called when traffic can start flowing again.
10970 * @pdev: Pointer to PCI device
10971 *
10972 * This callback is called when the error recovery driver tells us that
10973 * its OK to resume normal operation.
10974 */
10975static void ixgbe_io_resume(struct pci_dev *pdev)
10976{
Alexander Duyckc60fbb02010-11-16 19:26:54 -080010977 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
10978 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -070010979
Greg Rose83c61fa2011-09-07 05:59:35 +000010980#ifdef CONFIG_PCI_IOV
10981 if (adapter->vferr_refcount) {
10982 e_info(drv, "Resuming after VF err\n");
10983 adapter->vferr_refcount--;
10984 return;
10985 }
10986
10987#endif
Emil Tantilov126db132016-11-16 09:48:02 -080010988 rtnl_lock();
Alexander Duyckc7ccde02011-07-21 00:40:40 +000010989 if (netif_running(netdev))
Emil Tantilov126db132016-11-16 09:48:02 -080010990 ixgbe_open(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -070010991
10992 netif_device_attach(netdev);
Emil Tantilov126db132016-11-16 09:48:02 -080010993 rtnl_unlock();
Auke Kok9a799d72007-09-15 14:07:45 -070010994}
10995
Stephen Hemminger3646f0e2012-09-07 09:33:15 -070010996static const struct pci_error_handlers ixgbe_err_handler = {
Auke Kok9a799d72007-09-15 14:07:45 -070010997 .error_detected = ixgbe_io_error_detected,
10998 .slot_reset = ixgbe_io_slot_reset,
10999 .resume = ixgbe_io_resume,
11000};
11001
11002static struct pci_driver ixgbe_driver = {
11003 .name = ixgbe_driver_name,
11004 .id_table = ixgbe_pci_tbl,
11005 .probe = ixgbe_probe,
Bill Pemberton9f9a12f2012-12-03 09:24:25 -050011006 .remove = ixgbe_remove,
Auke Kok9a799d72007-09-15 14:07:45 -070011007#ifdef CONFIG_PM
11008 .suspend = ixgbe_suspend,
11009 .resume = ixgbe_resume,
11010#endif
11011 .shutdown = ixgbe_shutdown,
Greg Roseda36b642012-12-11 08:26:43 +000011012 .sriov_configure = ixgbe_pci_sriov_configure,
Auke Kok9a799d72007-09-15 14:07:45 -070011013 .err_handler = &ixgbe_err_handler
11014};
11015
11016/**
11017 * ixgbe_init_module - Driver Registration Routine
11018 *
11019 * ixgbe_init_module is the first routine called when the driver is
11020 * loaded. All it does is register with the PCI subsystem.
11021 **/
11022static int __init ixgbe_init_module(void)
11023{
11024 int ret;
Joe Perchesc7689572010-09-07 21:35:17 +000011025 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
Emil Tantilov849c4542010-06-03 16:53:41 +000011026 pr_info("%s\n", ixgbe_copyright);
Auke Kok9a799d72007-09-15 14:07:45 -070011027
Mark Rustad780484d2015-10-21 17:21:10 -070011028 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name);
11029 if (!ixgbe_wq) {
11030 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name);
11031 return -ENOMEM;
11032 }
11033
Catherine Sullivan00949162012-08-10 01:59:10 +000011034 ixgbe_dbg_init();
Catherine Sullivan00949162012-08-10 01:59:10 +000011035
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +000011036 ret = pci_register_driver(&ixgbe_driver);
11037 if (ret) {
Wei Yongjun6b836872016-07-12 15:17:02 +000011038 destroy_workqueue(ixgbe_wq);
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +000011039 ixgbe_dbg_exit();
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +000011040 return ret;
11041 }
11042
Jeff Garzik5dd2d332008-10-16 05:09:31 -040011043#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011044 dca_register_notify(&dca_notifier);
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011045#endif
Jeff Garzik5dd2d332008-10-16 05:09:31 -040011046
Jakub Kicinskif01fc1a2013-04-03 16:50:54 +000011047 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -070011048}
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070011049
Auke Kok9a799d72007-09-15 14:07:45 -070011050module_init(ixgbe_init_module);
11051
11052/**
11053 * ixgbe_exit_module - Driver Exit Cleanup Routine
11054 *
11055 * ixgbe_exit_module is called just before the driver is removed
11056 * from memory.
11057 **/
11058static void __exit ixgbe_exit_module(void)
11059{
Jeff Garzik5dd2d332008-10-16 05:09:31 -040011060#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011061 dca_unregister_notify(&dca_notifier);
11062#endif
Auke Kok9a799d72007-09-15 14:07:45 -070011063 pci_unregister_driver(&ixgbe_driver);
Catherine Sullivan00949162012-08-10 01:59:10 +000011064
Catherine Sullivan00949162012-08-10 01:59:10 +000011065 ixgbe_dbg_exit();
Mark Rustad780484d2015-10-21 17:21:10 -070011066 if (ixgbe_wq) {
11067 destroy_workqueue(ixgbe_wq);
11068 ixgbe_wq = NULL;
11069 }
Auke Kok9a799d72007-09-15 14:07:45 -070011070}
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011071
Jeff Garzik5dd2d332008-10-16 05:09:31 -040011072#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011073static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +000011074 void *p)
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011075{
11076 int ret_val;
11077
11078 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
Joe Perchese8e9f692010-09-07 21:34:53 +000011079 __ixgbe_notify_dca);
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011080
11081 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
11082}
Jeb Cramerbd0362d2008-03-03 15:04:02 -080011083
Alexander Duyckb4533682009-03-31 21:32:42 +000011084#endif /* CONFIG_IXGBE_DCA */
Emil Tantilov849c4542010-06-03 16:53:41 +000011085
Auke Kok9a799d72007-09-15 14:07:45 -070011086module_exit(ixgbe_exit_module);
11087
11088/* ixgbe_main.c */