blob: 40d5829ed36aaa6945c9c4c2056325b68ab64c03 [file] [log] [blame]
Alexander Duyck2f90b862008-11-20 20:52:10 -08001/*
Mark Rustad698e1d22011-03-14 09:01:02 +00002 * Copyright (c) 2008-2011, Intel Corporation.
Alexander Duyck2f90b862008-11-20 20:52:10 -08003 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
15 * Place - Suite 330, Boston, MA 02111-1307 USA.
16 *
17 * Author: Lucy Liu <lucy.liu@intel.com>
18 */
19
20#include <linux/netdevice.h>
21#include <linux/netlink.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090022#include <linux/slab.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080023#include <net/netlink.h>
24#include <net/rtnetlink.h>
25#include <linux/dcbnl.h>
John Fastabend96b99682010-12-30 09:26:37 +000026#include <net/dcbevent.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080027#include <linux/rtnetlink.h>
Paul Gortmaker3a9a2312011-05-27 09:12:25 -040028#include <linux/module.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080029#include <net/sock.h>
30
Ben Hutchingsae86b9e2012-07-10 10:55:35 +000031/* Data Center Bridging (DCB) is a collection of Ethernet enhancements
Alexander Duyck2f90b862008-11-20 20:52:10 -080032 * intended to allow network traffic with differing requirements
33 * (highly reliable, no drops vs. best effort vs. low latency) to operate
34 * and co-exist on Ethernet. Current DCB features are:
35 *
36 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
37 * framework for assigning bandwidth guarantees to traffic classes.
38 *
39 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
40 * can work independently for each 802.1p priority.
41 *
42 * Congestion Notification - provides a mechanism for end-to-end congestion
43 * control for protocols which do not have built-in congestion management.
44 *
45 * More information about the emerging standards for these Ethernet features
46 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
47 *
48 * This file implements an rtnetlink interface to allow configuration of DCB
49 * features for capable devices.
50 */
51
52MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -080053MODULE_DESCRIPTION("Data Center Bridging netlink interface");
Alexander Duyck2f90b862008-11-20 20:52:10 -080054MODULE_LICENSE("GPL");
55
56/**************** DCB attribute policies *************************************/
57
58/* DCB netlink attributes policy */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000059static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -080060 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
61 [DCB_ATTR_STATE] = {.type = NLA_U8},
62 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
63 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
64 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
Alexander Duyck2f90b862008-11-20 20:52:10 -080065 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
Alexander Duyck859ee3c2008-11-20 21:10:23 -080066 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
67 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
Yi Zou6fa382a2009-08-31 12:33:20 +000069 [DCB_ATTR_APP] = {.type = NLA_NESTED},
John Fastabend3e290272010-12-30 09:25:46 +000070 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
Shmulik Ravid6241b622010-12-30 06:26:48 +000071 [DCB_ATTR_DCBX] = {.type = NLA_U8},
Shmulik Ravidea45fe42010-12-30 06:26:55 +000072 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
Alexander Duyck2f90b862008-11-20 20:52:10 -080073};
74
75/* DCB priority flow control to User Priority nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000076static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080077 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
82 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
83 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
84 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
85 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
86};
87
88/* DCB priority grouping nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000089static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080090 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
96 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
97 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
98 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
99 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
104 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
105 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
106 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
107 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
108};
109
110/* DCB traffic class nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000111static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800112 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
113 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
114 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
115 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
116 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
117};
118
Alexander Duyck46132182008-11-20 21:05:08 -0800119/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000120static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
Alexander Duyck46132182008-11-20 21:05:08 -0800121 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
122 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
125 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
126 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
127 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
128 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
Shmulik Ravid6241b622010-12-30 06:26:48 +0000129 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
Alexander Duyck46132182008-11-20 21:05:08 -0800130};
Alexander Duyck2f90b862008-11-20 20:52:10 -0800131
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800132/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000133static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800134 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
135 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
136 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
137};
138
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800139/* DCB BCN nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000140static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800141 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
146 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
147 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
148 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
149 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
Don Skidmoref4314e82008-12-21 20:10:29 -0800150 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800152 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
162 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
163 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
164 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
165 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
166};
167
Yi Zou6fa382a2009-08-31 12:33:20 +0000168/* DCB APP nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000169static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
Yi Zou6fa382a2009-08-31 12:33:20 +0000170 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
171 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
172 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
173};
174
John Fastabend3e290272010-12-30 09:25:46 +0000175/* IEEE 802.1Qaz nested attributes. */
176static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
177 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
178 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
179 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
Amir Vadai08f10af2012-04-04 21:33:30 +0000180 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
John Fastabend3e290272010-12-30 09:25:46 +0000181};
182
183static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
184 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
185};
186
Shmulik Ravidea45fe42010-12-30 06:26:55 +0000187/* DCB number of traffic classes nested attributes. */
188static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
189 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
190 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
191 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
192 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
193};
194
John Fastabend9ab933a2010-12-30 09:26:31 +0000195static LIST_HEAD(dcb_app_list);
196static DEFINE_SPINLOCK(dcb_lock);
197
Thomas Graf33a03aa2012-06-13 02:54:54 +0000198static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
199 u32 flags, struct nlmsghdr **nlhp)
200{
201 struct sk_buff *skb;
202 struct dcbmsg *dcb;
203 struct nlmsghdr *nlh;
204
205 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
206 if (!skb)
207 return NULL;
208
209 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
Thomas Grafb3908e22012-06-13 22:40:15 +0000210 BUG_ON(!nlh);
Thomas Graf33a03aa2012-06-13 02:54:54 +0000211
212 dcb = nlmsg_data(nlh);
213 dcb->dcb_family = AF_UNSPEC;
214 dcb->cmd = cmd;
215 dcb->dcb_pad = 0;
216
217 if (nlhp)
218 *nlhp = nlh;
219
220 return skb;
221}
222
Thomas Graf7be99412012-06-13 02:54:55 +0000223static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
224 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800225{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800226 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
227 if (!netdev->dcbnl_ops->getstate)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000228 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800229
Thomas Graf7be99412012-06-13 02:54:55 +0000230 return nla_put_u8(skb, DCB_ATTR_STATE,
231 netdev->dcbnl_ops->getstate(netdev));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800232}
233
Thomas Graf7be99412012-06-13 02:54:55 +0000234static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
235 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800236{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800237 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
238 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000239 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800240 int i;
241 int getall = 0;
242
Thomas Graf3d1f4862012-06-13 02:54:58 +0000243 if (!tb[DCB_ATTR_PFC_CFG])
244 return -EINVAL;
245
246 if (!netdev->dcbnl_ops->getpfccfg)
247 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800248
249 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
250 tb[DCB_ATTR_PFC_CFG],
251 dcbnl_pfc_up_nest);
252 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000253 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800254
Thomas Graf7be99412012-06-13 02:54:55 +0000255 nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800256 if (!nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000257 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800258
259 if (data[DCB_PFC_UP_ATTR_ALL])
260 getall = 1;
261
262 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
263 if (!getall && !data[i])
264 continue;
265
266 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
267 &value);
Thomas Graf7be99412012-06-13 02:54:55 +0000268 ret = nla_put_u8(skb, i, value);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800269 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000270 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000271 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800272 }
273 }
Thomas Graf7be99412012-06-13 02:54:55 +0000274 nla_nest_end(skb, nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800275
276 return 0;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800277}
278
Thomas Graf7be99412012-06-13 02:54:55 +0000279static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
280 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800281{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800282 u8 perm_addr[MAX_ADDR_LEN];
Alexander Duyck2f90b862008-11-20 20:52:10 -0800283
284 if (!netdev->dcbnl_ops->getpermhwaddr)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000285 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800286
Mathias Krause29cd8ae2013-03-09 05:52:21 +0000287 memset(perm_addr, 0, sizeof(perm_addr));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800288 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
289
Thomas Graf7be99412012-06-13 02:54:55 +0000290 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800291}
292
Thomas Graf7be99412012-06-13 02:54:55 +0000293static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
294 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck46132182008-11-20 21:05:08 -0800295{
Alexander Duyck46132182008-11-20 21:05:08 -0800296 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
297 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000298 int ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800299 int i;
300 int getall = 0;
301
Thomas Graf3d1f4862012-06-13 02:54:58 +0000302 if (!tb[DCB_ATTR_CAP])
303 return -EINVAL;
304
305 if (!netdev->dcbnl_ops->getcap)
306 return -EOPNOTSUPP;
Alexander Duyck46132182008-11-20 21:05:08 -0800307
308 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
309 dcbnl_cap_nest);
310 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000311 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800312
Thomas Graf7be99412012-06-13 02:54:55 +0000313 nest = nla_nest_start(skb, DCB_ATTR_CAP);
Alexander Duyck46132182008-11-20 21:05:08 -0800314 if (!nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000315 return -EMSGSIZE;
Alexander Duyck46132182008-11-20 21:05:08 -0800316
317 if (data[DCB_CAP_ATTR_ALL])
318 getall = 1;
319
320 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
321 if (!getall && !data[i])
322 continue;
323
324 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
Thomas Graf7be99412012-06-13 02:54:55 +0000325 ret = nla_put_u8(skb, i, value);
Alexander Duyck46132182008-11-20 21:05:08 -0800326 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000327 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000328 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800329 }
330 }
331 }
Thomas Graf7be99412012-06-13 02:54:55 +0000332 nla_nest_end(skb, nest);
Alexander Duyck46132182008-11-20 21:05:08 -0800333
334 return 0;
Alexander Duyck46132182008-11-20 21:05:08 -0800335}
336
Thomas Graf7be99412012-06-13 02:54:55 +0000337static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
338 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800339{
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800340 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
341 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000342 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800343 int i;
344 int getall = 0;
345
Thomas Graf3d1f4862012-06-13 02:54:58 +0000346 if (!tb[DCB_ATTR_NUMTCS])
347 return -EINVAL;
348
349 if (!netdev->dcbnl_ops->getnumtcs)
350 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800351
352 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
353 dcbnl_numtcs_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000354 if (ret)
355 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800356
Thomas Graf7be99412012-06-13 02:54:55 +0000357 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000358 if (!nest)
359 return -EMSGSIZE;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800360
361 if (data[DCB_NUMTCS_ATTR_ALL])
362 getall = 1;
363
364 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
365 if (!getall && !data[i])
366 continue;
367
368 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
369 if (!ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000370 ret = nla_put_u8(skb, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800371 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000372 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000373 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800374 }
Thomas Graf3d1f4862012-06-13 02:54:58 +0000375 } else
376 return -EINVAL;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800377 }
Thomas Graf7be99412012-06-13 02:54:55 +0000378 nla_nest_end(skb, nest);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800379
380 return 0;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800381}
382
Thomas Graf7be99412012-06-13 02:54:55 +0000383static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
384 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800385{
386 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000387 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800388 u8 value;
389 int i;
390
Thomas Graf3d1f4862012-06-13 02:54:58 +0000391 if (!tb[DCB_ATTR_NUMTCS])
392 return -EINVAL;
393
394 if (!netdev->dcbnl_ops->setnumtcs)
395 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800396
397 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
398 dcbnl_numtcs_nest);
Thomas Graf7be99412012-06-13 02:54:55 +0000399 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000400 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800401
402 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
403 if (data[i] == NULL)
404 continue;
405
406 value = nla_get_u8(data[i]);
407
408 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800409 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +0000410 break;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800411 }
412
Thomas Graf7be99412012-06-13 02:54:55 +0000413 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800414}
415
Thomas Graf7be99412012-06-13 02:54:55 +0000416static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
417 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800418{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800419 if (!netdev->dcbnl_ops->getpfcstate)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000420 return -EOPNOTSUPP;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800421
Thomas Graf7be99412012-06-13 02:54:55 +0000422 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
423 netdev->dcbnl_ops->getpfcstate(netdev));
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800424}
425
Thomas Graf7be99412012-06-13 02:54:55 +0000426static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
427 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800428{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800429 u8 value;
430
Thomas Graf3d1f4862012-06-13 02:54:58 +0000431 if (!tb[DCB_ATTR_PFC_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000432 return -EINVAL;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800433
Thomas Graf3d1f4862012-06-13 02:54:58 +0000434 if (!netdev->dcbnl_ops->setpfcstate)
435 return -EOPNOTSUPP;
436
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800437 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
438
439 netdev->dcbnl_ops->setpfcstate(netdev, value);
440
Thomas Graf7be99412012-06-13 02:54:55 +0000441 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800442}
443
Thomas Graf7be99412012-06-13 02:54:55 +0000444static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
445 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000446{
Yi Zou57949682009-08-31 12:33:40 +0000447 struct nlattr *app_nest;
448 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
449 u16 id;
450 u8 up, idtype;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000451 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000452
John Fastabend3dce38a2011-01-21 16:35:18 +0000453 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000454 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000455
456 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
457 dcbnl_app_nest);
458 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000459 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000460
Yi Zou57949682009-08-31 12:33:40 +0000461 /* all must be non-null */
462 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
463 (!app_tb[DCB_APP_ATTR_ID]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000464 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000465
466 /* either by eth type or by socket number */
467 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
468 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
469 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000470 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000471
472 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
John Fastabend3dce38a2011-01-21 16:35:18 +0000473
474 if (netdev->dcbnl_ops->getapp) {
475 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
476 } else {
477 struct dcb_app app = {
478 .selector = idtype,
479 .protocol = id,
480 };
481 up = dcb_getapp(netdev, &app);
482 }
Yi Zou57949682009-08-31 12:33:40 +0000483
Thomas Graf7be99412012-06-13 02:54:55 +0000484 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
485 if (!app_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000486 return -EMSGSIZE;
Yi Zou57949682009-08-31 12:33:40 +0000487
Thomas Graf7be99412012-06-13 02:54:55 +0000488 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
Yi Zou57949682009-08-31 12:33:40 +0000489 if (ret)
490 goto out_cancel;
491
Thomas Graf7be99412012-06-13 02:54:55 +0000492 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
Yi Zou57949682009-08-31 12:33:40 +0000493 if (ret)
494 goto out_cancel;
495
Thomas Graf7be99412012-06-13 02:54:55 +0000496 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
Yi Zou57949682009-08-31 12:33:40 +0000497 if (ret)
498 goto out_cancel;
499
Thomas Graf7be99412012-06-13 02:54:55 +0000500 nla_nest_end(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000501
Thomas Graf3d1f4862012-06-13 02:54:58 +0000502 return 0;
Yi Zou57949682009-08-31 12:33:40 +0000503
504out_cancel:
Thomas Graf7be99412012-06-13 02:54:55 +0000505 nla_nest_cancel(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000506 return ret;
507}
508
Thomas Graf7be99412012-06-13 02:54:55 +0000509static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
510 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000511{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000512 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000513 u16 id;
514 u8 up, idtype;
515 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
516
John Fastabend9ab933a2010-12-30 09:26:31 +0000517 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000518 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000519
520 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
521 dcbnl_app_nest);
522 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000523 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000524
Yi Zou57949682009-08-31 12:33:40 +0000525 /* all must be non-null */
526 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
527 (!app_tb[DCB_APP_ATTR_ID]) ||
528 (!app_tb[DCB_APP_ATTR_PRIORITY]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000529 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000530
531 /* either by eth type or by socket number */
532 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
533 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
534 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000535 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000536
537 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
538 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
539
John Fastabend9ab933a2010-12-30 09:26:31 +0000540 if (netdev->dcbnl_ops->setapp) {
Thomas Graf3d1f4862012-06-13 02:54:58 +0000541 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
John Fastabend9ab933a2010-12-30 09:26:31 +0000542 } else {
543 struct dcb_app app;
544 app.selector = idtype;
545 app.protocol = id;
546 app.priority = up;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000547 ret = dcb_setapp(netdev, &app);
John Fastabend9ab933a2010-12-30 09:26:31 +0000548 }
549
Thomas Graf7be99412012-06-13 02:54:55 +0000550 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
John Fastabend08157982012-04-20 09:49:23 +0000551 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000552
Yi Zou57949682009-08-31 12:33:40 +0000553 return ret;
554}
555
Thomas Graf7be99412012-06-13 02:54:55 +0000556static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
557 struct nlattr **tb, struct sk_buff *skb, int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800558{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800559 struct nlattr *pg_nest, *param_nest, *data;
560 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
561 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
562 u8 prio, pgid, tc_pct, up_map;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000563 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800564 int getall = 0;
565 int i;
566
Thomas Graf3d1f4862012-06-13 02:54:58 +0000567 if (!tb[DCB_ATTR_PG_CFG])
568 return -EINVAL;
569
570 if (!netdev->dcbnl_ops->getpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800571 !netdev->dcbnl_ops->getpgtccfgrx ||
572 !netdev->dcbnl_ops->getpgbwgcfgtx ||
573 !netdev->dcbnl_ops->getpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000574 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800575
576 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
577 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800578 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000579 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800580
Thomas Graf7be99412012-06-13 02:54:55 +0000581 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800582 if (!pg_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000583 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800584
585 if (pg_tb[DCB_PG_ATTR_TC_ALL])
586 getall = 1;
587
588 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
589 if (!getall && !pg_tb[i])
590 continue;
591
592 if (pg_tb[DCB_PG_ATTR_TC_ALL])
593 data = pg_tb[DCB_PG_ATTR_TC_ALL];
594 else
595 data = pg_tb[i];
596 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
597 data, dcbnl_tc_param_nest);
598 if (ret)
599 goto err_pg;
600
Thomas Graf7be99412012-06-13 02:54:55 +0000601 param_nest = nla_nest_start(skb, i);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800602 if (!param_nest)
603 goto err_pg;
604
605 pgid = DCB_ATTR_VALUE_UNDEFINED;
606 prio = DCB_ATTR_VALUE_UNDEFINED;
607 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
608 up_map = DCB_ATTR_VALUE_UNDEFINED;
609
610 if (dir) {
611 /* Rx */
612 netdev->dcbnl_ops->getpgtccfgrx(netdev,
613 i - DCB_PG_ATTR_TC_0, &prio,
614 &pgid, &tc_pct, &up_map);
615 } else {
616 /* Tx */
617 netdev->dcbnl_ops->getpgtccfgtx(netdev,
618 i - DCB_PG_ATTR_TC_0, &prio,
619 &pgid, &tc_pct, &up_map);
620 }
621
622 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
623 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000624 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800625 DCB_TC_ATTR_PARAM_PGID, pgid);
626 if (ret)
627 goto err_param;
628 }
629 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
630 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000631 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800632 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
633 if (ret)
634 goto err_param;
635 }
636 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
637 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000638 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800639 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
640 if (ret)
641 goto err_param;
642 }
643 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
644 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000645 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800646 tc_pct);
647 if (ret)
648 goto err_param;
649 }
Thomas Graf7be99412012-06-13 02:54:55 +0000650 nla_nest_end(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800651 }
652
653 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
654 getall = 1;
655 else
656 getall = 0;
657
658 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
659 if (!getall && !pg_tb[i])
660 continue;
661
662 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
663
664 if (dir) {
665 /* Rx */
666 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
667 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
668 } else {
669 /* Tx */
670 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
671 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
672 }
Thomas Graf7be99412012-06-13 02:54:55 +0000673 ret = nla_put_u8(skb, i, tc_pct);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800674 if (ret)
675 goto err_pg;
676 }
677
Thomas Graf7be99412012-06-13 02:54:55 +0000678 nla_nest_end(skb, pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800679
680 return 0;
681
682err_param:
Thomas Graf7be99412012-06-13 02:54:55 +0000683 nla_nest_cancel(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800684err_pg:
Thomas Graf7be99412012-06-13 02:54:55 +0000685 nla_nest_cancel(skb, pg_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000686
687 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800688}
689
Thomas Graf7be99412012-06-13 02:54:55 +0000690static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
691 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800692{
Thomas Graf7be99412012-06-13 02:54:55 +0000693 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800694}
695
Thomas Graf7be99412012-06-13 02:54:55 +0000696static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
697 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800698{
Thomas Graf7be99412012-06-13 02:54:55 +0000699 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800700}
701
Thomas Graf7be99412012-06-13 02:54:55 +0000702static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
703 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800704{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800705 u8 value;
706
Thomas Graf3d1f4862012-06-13 02:54:58 +0000707 if (!tb[DCB_ATTR_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000708 return -EINVAL;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800709
Thomas Graf3d1f4862012-06-13 02:54:58 +0000710 if (!netdev->dcbnl_ops->setstate)
711 return -EOPNOTSUPP;
712
Alexander Duyck2f90b862008-11-20 20:52:10 -0800713 value = nla_get_u8(tb[DCB_ATTR_STATE]);
714
Thomas Graf7be99412012-06-13 02:54:55 +0000715 return nla_put_u8(skb, DCB_ATTR_STATE,
716 netdev->dcbnl_ops->setstate(netdev, value));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800717}
718
Thomas Graf7be99412012-06-13 02:54:55 +0000719static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
720 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800721{
722 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
723 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000724 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800725 u8 value;
726
Thomas Graf3d1f4862012-06-13 02:54:58 +0000727 if (!tb[DCB_ATTR_PFC_CFG])
728 return -EINVAL;
729
730 if (!netdev->dcbnl_ops->setpfccfg)
731 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800732
733 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
734 tb[DCB_ATTR_PFC_CFG],
735 dcbnl_pfc_up_nest);
736 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000737 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800738
739 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
740 if (data[i] == NULL)
741 continue;
742 value = nla_get_u8(data[i]);
743 netdev->dcbnl_ops->setpfccfg(netdev,
744 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
745 }
746
Thomas Graf7be99412012-06-13 02:54:55 +0000747 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800748}
749
Thomas Graf7be99412012-06-13 02:54:55 +0000750static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
751 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800752{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000753 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800754
Thomas Graf3d1f4862012-06-13 02:54:58 +0000755 if (!tb[DCB_ATTR_SET_ALL])
756 return -EINVAL;
757
758 if (!netdev->dcbnl_ops->setall)
759 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800760
Thomas Graf7be99412012-06-13 02:54:55 +0000761 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
762 netdev->dcbnl_ops->setall(netdev));
John Fastabend08157982012-04-20 09:49:23 +0000763 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800764
765 return ret;
766}
767
Thomas Graf7be99412012-06-13 02:54:55 +0000768static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
769 u32 seq, struct nlattr **tb, struct sk_buff *skb,
770 int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800771{
772 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
773 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000774 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800775 int i;
776 u8 pgid;
777 u8 up_map;
778 u8 prio;
779 u8 tc_pct;
780
Thomas Graf3d1f4862012-06-13 02:54:58 +0000781 if (!tb[DCB_ATTR_PG_CFG])
782 return -EINVAL;
783
784 if (!netdev->dcbnl_ops->setpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800785 !netdev->dcbnl_ops->setpgtccfgrx ||
786 !netdev->dcbnl_ops->setpgbwgcfgtx ||
787 !netdev->dcbnl_ops->setpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000788 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800789
790 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
791 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
792 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000793 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800794
795 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
796 if (!pg_tb[i])
797 continue;
798
799 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
800 pg_tb[i], dcbnl_tc_param_nest);
801 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000802 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800803
804 pgid = DCB_ATTR_VALUE_UNDEFINED;
805 prio = DCB_ATTR_VALUE_UNDEFINED;
806 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
807 up_map = DCB_ATTR_VALUE_UNDEFINED;
808
809 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
810 prio =
811 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
812
813 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
814 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
815
816 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
817 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
818
819 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
820 up_map =
821 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
822
823 /* dir: Tx = 0, Rx = 1 */
824 if (dir) {
825 /* Rx */
826 netdev->dcbnl_ops->setpgtccfgrx(netdev,
827 i - DCB_PG_ATTR_TC_0,
828 prio, pgid, tc_pct, up_map);
829 } else {
830 /* Tx */
831 netdev->dcbnl_ops->setpgtccfgtx(netdev,
832 i - DCB_PG_ATTR_TC_0,
833 prio, pgid, tc_pct, up_map);
834 }
835 }
836
837 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
838 if (!pg_tb[i])
839 continue;
840
841 tc_pct = nla_get_u8(pg_tb[i]);
842
843 /* dir: Tx = 0, Rx = 1 */
844 if (dir) {
845 /* Rx */
846 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
847 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
848 } else {
849 /* Tx */
850 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
851 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
852 }
853 }
854
John Fastabendbb1dfef2012-06-20 19:56:21 +0000855 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800856}
857
Thomas Graf7be99412012-06-13 02:54:55 +0000858static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
859 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800860{
Thomas Graf7be99412012-06-13 02:54:55 +0000861 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800862}
863
Thomas Graf7be99412012-06-13 02:54:55 +0000864static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
865 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800866{
Thomas Graf7be99412012-06-13 02:54:55 +0000867 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800868}
869
Thomas Graf7be99412012-06-13 02:54:55 +0000870static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
871 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800872{
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800873 struct nlattr *bcn_nest;
874 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
875 u8 value_byte;
876 u32 value_integer;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000877 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800878 bool getall = false;
879 int i;
880
Thomas Graf3d1f4862012-06-13 02:54:58 +0000881 if (!tb[DCB_ATTR_BCN])
882 return -EINVAL;
883
884 if (!netdev->dcbnl_ops->getbcnrp ||
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800885 !netdev->dcbnl_ops->getbcncfg)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000886 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800887
888 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
889 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800890 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000891 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800892
Thomas Graf7be99412012-06-13 02:54:55 +0000893 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800894 if (!bcn_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000895 return -EMSGSIZE;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800896
897 if (bcn_tb[DCB_BCN_ATTR_ALL])
898 getall = true;
899
900 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
901 if (!getall && !bcn_tb[i])
902 continue;
903
904 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
905 &value_byte);
Thomas Graf7be99412012-06-13 02:54:55 +0000906 ret = nla_put_u8(skb, i, value_byte);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800907 if (ret)
908 goto err_bcn;
909 }
910
Don Skidmoref4314e82008-12-21 20:10:29 -0800911 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800912 if (!getall && !bcn_tb[i])
913 continue;
914
915 netdev->dcbnl_ops->getbcncfg(netdev, i,
916 &value_integer);
Thomas Graf7be99412012-06-13 02:54:55 +0000917 ret = nla_put_u32(skb, i, value_integer);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800918 if (ret)
919 goto err_bcn;
920 }
921
Thomas Graf7be99412012-06-13 02:54:55 +0000922 nla_nest_end(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800923
924 return 0;
925
926err_bcn:
Thomas Graf7be99412012-06-13 02:54:55 +0000927 nla_nest_cancel(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800928 return ret;
929}
930
Thomas Graf7be99412012-06-13 02:54:55 +0000931static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
932 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800933{
934 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
935 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000936 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800937 u8 value_byte;
938 u32 value_int;
939
Thomas Graf3d1f4862012-06-13 02:54:58 +0000940 if (!tb[DCB_ATTR_BCN])
941 return -EINVAL;
942
943 if (!netdev->dcbnl_ops->setbcncfg ||
Joe Perchesf64f9e72009-11-29 16:55:45 -0800944 !netdev->dcbnl_ops->setbcnrp)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000945 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800946
947 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
948 tb[DCB_ATTR_BCN],
949 dcbnl_pfc_up_nest);
950 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000951 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800952
953 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
954 if (data[i] == NULL)
955 continue;
956 value_byte = nla_get_u8(data[i]);
957 netdev->dcbnl_ops->setbcnrp(netdev,
958 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
959 }
960
Don Skidmoref4314e82008-12-21 20:10:29 -0800961 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800962 if (data[i] == NULL)
963 continue;
964 value_int = nla_get_u32(data[i]);
965 netdev->dcbnl_ops->setbcncfg(netdev,
966 i, value_int);
967 }
968
Thomas Graf3d1f4862012-06-13 02:54:58 +0000969 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800970}
971
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +0000972static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
973 int app_nested_type, int app_info_type,
974 int app_entry_type)
Shmulik Ravideed84712011-02-27 05:04:31 +0000975{
976 struct dcb_peer_app_info info;
977 struct dcb_app *table = NULL;
978 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
979 u16 app_count;
980 int err;
981
982
983 /**
984 * retrieve the peer app configuration form the driver. If the driver
985 * handlers fail exit without doing anything
986 */
987 err = ops->peer_getappinfo(netdev, &info, &app_count);
988 if (!err && app_count) {
989 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
990 if (!table)
991 return -ENOMEM;
992
993 err = ops->peer_getapptable(netdev, table);
994 }
995
996 if (!err) {
997 u16 i;
998 struct nlattr *app;
999
1000 /**
1001 * build the message, from here on the only possible failure
1002 * is due to the skb size
1003 */
1004 err = -EMSGSIZE;
1005
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001006 app = nla_nest_start(skb, app_nested_type);
Shmulik Ravideed84712011-02-27 05:04:31 +00001007 if (!app)
1008 goto nla_put_failure;
1009
David S. Miller1eb4c972012-04-01 20:03:01 -04001010 if (app_info_type &&
1011 nla_put(skb, app_info_type, sizeof(info), &info))
1012 goto nla_put_failure;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001013
David S. Miller1eb4c972012-04-01 20:03:01 -04001014 for (i = 0; i < app_count; i++) {
1015 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1016 &table[i]))
1017 goto nla_put_failure;
1018 }
Shmulik Ravideed84712011-02-27 05:04:31 +00001019 nla_nest_end(skb, app);
1020 }
1021 err = 0;
1022
1023nla_put_failure:
1024 kfree(table);
1025 return err;
1026}
John Fastabend3e290272010-12-30 09:25:46 +00001027
1028/* Handle IEEE 802.1Qaz GET commands. */
John Fastabend314b4772011-06-21 07:34:37 +00001029static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
John Fastabend3e290272010-12-30 09:25:46 +00001030{
John Fastabend9ab933a2010-12-30 09:26:31 +00001031 struct nlattr *ieee, *app;
1032 struct dcb_app_type *itr;
John Fastabend3e290272010-12-30 09:25:46 +00001033 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabendc7797ba2011-06-21 07:34:31 +00001034 int dcbx;
Thomas Graf3d1f4862012-06-13 02:54:58 +00001035 int err;
John Fastabend3e290272010-12-30 09:25:46 +00001036
David S. Miller1eb4c972012-04-01 20:03:01 -04001037 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001038 return -EMSGSIZE;
1039
John Fastabend3e290272010-12-30 09:25:46 +00001040 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1041 if (!ieee)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001042 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001043
1044 if (ops->ieee_getets) {
1045 struct ieee_ets ets;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001046 memset(&ets, 0, sizeof(ets));
John Fastabend3e290272010-12-30 09:25:46 +00001047 err = ops->ieee_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001048 if (!err &&
1049 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001050 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001051 }
1052
Amir Vadai08f10af2012-04-04 21:33:30 +00001053 if (ops->ieee_getmaxrate) {
1054 struct ieee_maxrate maxrate;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001055 memset(&maxrate, 0, sizeof(maxrate));
Amir Vadai08f10af2012-04-04 21:33:30 +00001056 err = ops->ieee_getmaxrate(netdev, &maxrate);
1057 if (!err) {
1058 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1059 sizeof(maxrate), &maxrate);
1060 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001061 return -EMSGSIZE;
Amir Vadai08f10af2012-04-04 21:33:30 +00001062 }
1063 }
1064
John Fastabend3e290272010-12-30 09:25:46 +00001065 if (ops->ieee_getpfc) {
1066 struct ieee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001067 memset(&pfc, 0, sizeof(pfc));
John Fastabend3e290272010-12-30 09:25:46 +00001068 err = ops->ieee_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001069 if (!err &&
1070 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001071 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001072 }
1073
John Fastabend9ab933a2010-12-30 09:26:31 +00001074 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1075 if (!app)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001076 return -EMSGSIZE;
John Fastabend9ab933a2010-12-30 09:26:31 +00001077
1078 spin_lock(&dcb_lock);
1079 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001080 if (itr->ifindex == netdev->ifindex) {
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001081 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1082 &itr->app);
1083 if (err) {
1084 spin_unlock(&dcb_lock);
Thomas Graf3d1f4862012-06-13 02:54:58 +00001085 return -EMSGSIZE;
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001086 }
1087 }
John Fastabend9ab933a2010-12-30 09:26:31 +00001088 }
John Fastabendc7797ba2011-06-21 07:34:31 +00001089
1090 if (netdev->dcbnl_ops->getdcbx)
1091 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1092 else
1093 dcbx = -EOPNOTSUPP;
1094
John Fastabend9ab933a2010-12-30 09:26:31 +00001095 spin_unlock(&dcb_lock);
1096 nla_nest_end(skb, app);
1097
Shmulik Ravideed84712011-02-27 05:04:31 +00001098 /* get peer info if available */
1099 if (ops->ieee_peer_getets) {
1100 struct ieee_ets ets;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001101 memset(&ets, 0, sizeof(ets));
Shmulik Ravideed84712011-02-27 05:04:31 +00001102 err = ops->ieee_peer_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001103 if (!err &&
1104 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001105 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001106 }
1107
1108 if (ops->ieee_peer_getpfc) {
1109 struct ieee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001110 memset(&pfc, 0, sizeof(pfc));
Shmulik Ravideed84712011-02-27 05:04:31 +00001111 err = ops->ieee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001112 if (!err &&
1113 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001114 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001115 }
1116
1117 if (ops->peer_getappinfo && ops->peer_getapptable) {
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001118 err = dcbnl_build_peer_app(netdev, skb,
1119 DCB_ATTR_IEEE_PEER_APP,
1120 DCB_ATTR_IEEE_APP_UNSPEC,
1121 DCB_ATTR_IEEE_APP);
Shmulik Ravideed84712011-02-27 05:04:31 +00001122 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001123 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001124 }
1125
John Fastabend3e290272010-12-30 09:25:46 +00001126 nla_nest_end(skb, ieee);
John Fastabendc7797ba2011-06-21 07:34:31 +00001127 if (dcbx >= 0) {
1128 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1129 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001130 return -EMSGSIZE;
John Fastabendc7797ba2011-06-21 07:34:31 +00001131 }
John Fastabend3e290272010-12-30 09:25:46 +00001132
John Fastabend314b4772011-06-21 07:34:37 +00001133 return 0;
John Fastabend3e290272010-12-30 09:25:46 +00001134}
1135
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001136static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1137 int dir)
1138{
1139 u8 pgid, up_map, prio, tc_pct;
1140 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1141 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1142 struct nlattr *pg = nla_nest_start(skb, i);
1143
1144 if (!pg)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001145 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001146
1147 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1148 struct nlattr *tc_nest = nla_nest_start(skb, i);
1149
1150 if (!tc_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001151 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001152
1153 pgid = DCB_ATTR_VALUE_UNDEFINED;
1154 prio = DCB_ATTR_VALUE_UNDEFINED;
1155 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1156 up_map = DCB_ATTR_VALUE_UNDEFINED;
1157
1158 if (!dir)
1159 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1160 &prio, &pgid, &tc_pct, &up_map);
1161 else
1162 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1163 &prio, &pgid, &tc_pct, &up_map);
1164
David S. Miller1eb4c972012-04-01 20:03:01 -04001165 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1166 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1167 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1168 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001169 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001170 nla_nest_end(skb, tc_nest);
1171 }
1172
1173 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1174 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1175
1176 if (!dir)
1177 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1178 &tc_pct);
1179 else
1180 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1181 &tc_pct);
David S. Miller1eb4c972012-04-01 20:03:01 -04001182 if (nla_put_u8(skb, i, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001183 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001184 }
1185 nla_nest_end(skb, pg);
1186 return 0;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001187}
1188
1189static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1190{
1191 struct nlattr *cee, *app;
1192 struct dcb_app_type *itr;
1193 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1194 int dcbx, i, err = -EMSGSIZE;
1195 u8 value;
1196
David S. Miller1eb4c972012-04-01 20:03:01 -04001197 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1198 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001199 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1200 if (!cee)
1201 goto nla_put_failure;
1202
1203 /* local pg */
1204 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1205 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1206 if (err)
1207 goto nla_put_failure;
1208 }
1209
1210 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1211 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1212 if (err)
1213 goto nla_put_failure;
1214 }
1215
1216 /* local pfc */
1217 if (ops->getpfccfg) {
1218 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1219
1220 if (!pfc_nest)
1221 goto nla_put_failure;
1222
1223 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1224 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
David S. Miller1eb4c972012-04-01 20:03:01 -04001225 if (nla_put_u8(skb, i, value))
1226 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001227 }
1228 nla_nest_end(skb, pfc_nest);
1229 }
1230
1231 /* local app */
1232 spin_lock(&dcb_lock);
1233 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1234 if (!app)
Dan Carpenter40f5d722011-07-07 21:27:24 +00001235 goto dcb_unlock;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001236
1237 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001238 if (itr->ifindex == netdev->ifindex) {
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001239 struct nlattr *app_nest = nla_nest_start(skb,
1240 DCB_ATTR_APP);
1241 if (!app_nest)
1242 goto dcb_unlock;
1243
1244 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1245 itr->app.selector);
1246 if (err)
1247 goto dcb_unlock;
1248
1249 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1250 itr->app.protocol);
1251 if (err)
1252 goto dcb_unlock;
1253
1254 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1255 itr->app.priority);
1256 if (err)
1257 goto dcb_unlock;
1258
1259 nla_nest_end(skb, app_nest);
1260 }
1261 }
1262 nla_nest_end(skb, app);
1263
1264 if (netdev->dcbnl_ops->getdcbx)
1265 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1266 else
1267 dcbx = -EOPNOTSUPP;
1268
1269 spin_unlock(&dcb_lock);
1270
1271 /* features flags */
1272 if (ops->getfeatcfg) {
1273 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1274 if (!feat)
1275 goto nla_put_failure;
1276
1277 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1278 i++)
David S. Miller1eb4c972012-04-01 20:03:01 -04001279 if (!ops->getfeatcfg(netdev, i, &value) &&
1280 nla_put_u8(skb, i, value))
1281 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001282
1283 nla_nest_end(skb, feat);
1284 }
1285
1286 /* peer info if available */
1287 if (ops->cee_peer_getpg) {
1288 struct cee_pg pg;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001289 memset(&pg, 0, sizeof(pg));
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001290 err = ops->cee_peer_getpg(netdev, &pg);
David S. Miller1eb4c972012-04-01 20:03:01 -04001291 if (!err &&
1292 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1293 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001294 }
1295
1296 if (ops->cee_peer_getpfc) {
1297 struct cee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001298 memset(&pfc, 0, sizeof(pfc));
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001299 err = ops->cee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001300 if (!err &&
1301 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1302 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001303 }
1304
1305 if (ops->peer_getappinfo && ops->peer_getapptable) {
1306 err = dcbnl_build_peer_app(netdev, skb,
1307 DCB_ATTR_CEE_PEER_APP_TABLE,
1308 DCB_ATTR_CEE_PEER_APP_INFO,
1309 DCB_ATTR_CEE_PEER_APP);
1310 if (err)
1311 goto nla_put_failure;
1312 }
1313 nla_nest_end(skb, cee);
1314
1315 /* DCBX state */
1316 if (dcbx >= 0) {
1317 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1318 if (err)
1319 goto nla_put_failure;
1320 }
1321 return 0;
1322
1323dcb_unlock:
1324 spin_unlock(&dcb_lock);
1325nla_put_failure:
1326 return err;
1327}
1328
1329static int dcbnl_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001330 u32 seq, u32 portid, int dcbx_ver)
John Fastabend314b4772011-06-21 07:34:37 +00001331{
1332 struct net *net = dev_net(dev);
1333 struct sk_buff *skb;
1334 struct nlmsghdr *nlh;
John Fastabend314b4772011-06-21 07:34:37 +00001335 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1336 int err;
1337
1338 if (!ops)
1339 return -EOPNOTSUPP;
1340
Eric W. Biederman15e47302012-09-07 20:12:54 +00001341 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
John Fastabend314b4772011-06-21 07:34:37 +00001342 if (!skb)
1343 return -ENOBUFS;
1344
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001345 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1346 err = dcbnl_ieee_fill(skb, dev);
1347 else
1348 err = dcbnl_cee_fill(skb, dev);
1349
John Fastabend314b4772011-06-21 07:34:37 +00001350 if (err < 0) {
1351 /* Report error to broadcast listeners */
Thomas Grafab6d4702012-06-13 02:54:57 +00001352 nlmsg_free(skb);
John Fastabend314b4772011-06-21 07:34:37 +00001353 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1354 } else {
1355 /* End nlmsg and notify broadcast listeners */
1356 nlmsg_end(skb, nlh);
1357 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1358 }
1359
1360 return err;
1361}
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001362
1363int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001364 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001365{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001366 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001367}
1368EXPORT_SYMBOL(dcbnl_ieee_notify);
1369
1370int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001371 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001372{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001373 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001374}
1375EXPORT_SYMBOL(dcbnl_cee_notify);
John Fastabend314b4772011-06-21 07:34:37 +00001376
1377/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1378 * be completed the entire msg is aborted and error value is returned.
1379 * No attempt is made to reconcile the case where only part of the
1380 * cmd can be completed.
1381 */
Thomas Graf7be99412012-06-13 02:54:55 +00001382static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1383 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001384{
1385 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1386 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001387 int err;
John Fastabend314b4772011-06-21 07:34:37 +00001388
1389 if (!ops)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001390 return -EOPNOTSUPP;
John Fastabend314b4772011-06-21 07:34:37 +00001391
John Fastabend4003b652011-06-21 07:35:04 +00001392 if (!tb[DCB_ATTR_IEEE])
1393 return -EINVAL;
1394
John Fastabend314b4772011-06-21 07:34:37 +00001395 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1396 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1397 if (err)
1398 return err;
1399
1400 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1401 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1402 err = ops->ieee_setets(netdev, ets);
1403 if (err)
1404 goto err;
1405 }
1406
Amir Vadai08f10af2012-04-04 21:33:30 +00001407 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1408 struct ieee_maxrate *maxrate =
1409 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1410 err = ops->ieee_setmaxrate(netdev, maxrate);
1411 if (err)
1412 goto err;
1413 }
1414
John Fastabend314b4772011-06-21 07:34:37 +00001415 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1416 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1417 err = ops->ieee_setpfc(netdev, pfc);
1418 if (err)
1419 goto err;
1420 }
1421
1422 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1423 struct nlattr *attr;
1424 int rem;
1425
1426 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1427 struct dcb_app *app_data;
1428 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1429 continue;
1430 app_data = nla_data(attr);
1431 if (ops->ieee_setapp)
1432 err = ops->ieee_setapp(netdev, app_data);
1433 else
John Fastabendb6db2172011-06-21 07:34:42 +00001434 err = dcb_ieee_setapp(netdev, app_data);
John Fastabend314b4772011-06-21 07:34:37 +00001435 if (err)
1436 goto err;
1437 }
1438 }
1439
1440err:
Thomas Graf7be99412012-06-13 02:54:55 +00001441 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001442 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
John Fastabend314b4772011-06-21 07:34:37 +00001443 return err;
1444}
1445
Thomas Graf7be99412012-06-13 02:54:55 +00001446static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1447 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001448{
John Fastabend314b4772011-06-21 07:34:37 +00001449 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabend314b4772011-06-21 07:34:37 +00001450
1451 if (!ops)
1452 return -EOPNOTSUPP;
1453
Thomas Graf7be99412012-06-13 02:54:55 +00001454 return dcbnl_ieee_fill(skb, netdev);
John Fastabend314b4772011-06-21 07:34:37 +00001455}
John Fastabendf9ae7e42011-06-21 07:34:48 +00001456
Thomas Graf7be99412012-06-13 02:54:55 +00001457static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1458 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabendf9ae7e42011-06-21 07:34:48 +00001459{
1460 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1461 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001462 int err;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001463
1464 if (!ops)
1465 return -EOPNOTSUPP;
1466
1467 if (!tb[DCB_ATTR_IEEE])
1468 return -EINVAL;
1469
1470 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1471 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1472 if (err)
1473 return err;
1474
1475 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1476 struct nlattr *attr;
1477 int rem;
1478
1479 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1480 struct dcb_app *app_data;
1481
1482 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1483 continue;
1484 app_data = nla_data(attr);
1485 if (ops->ieee_delapp)
1486 err = ops->ieee_delapp(netdev, app_data);
1487 else
1488 err = dcb_ieee_delapp(netdev, app_data);
1489 if (err)
1490 goto err;
1491 }
1492 }
1493
1494err:
Thomas Graf7be99412012-06-13 02:54:55 +00001495 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001496 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001497 return err;
1498}
1499
1500
Shmulik Ravid6241b622010-12-30 06:26:48 +00001501/* DCBX configuration */
Thomas Graf7be99412012-06-13 02:54:55 +00001502static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1503 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001504{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001505 if (!netdev->dcbnl_ops->getdcbx)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001506 return -EOPNOTSUPP;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001507
Thomas Graf7be99412012-06-13 02:54:55 +00001508 return nla_put_u8(skb, DCB_ATTR_DCBX,
1509 netdev->dcbnl_ops->getdcbx(netdev));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001510}
1511
Thomas Graf7be99412012-06-13 02:54:55 +00001512static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1513 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001514{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001515 u8 value;
1516
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001517 if (!netdev->dcbnl_ops->setdcbx)
1518 return -EOPNOTSUPP;
1519
1520 if (!tb[DCB_ATTR_DCBX])
1521 return -EINVAL;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001522
1523 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1524
Thomas Graf7be99412012-06-13 02:54:55 +00001525 return nla_put_u8(skb, DCB_ATTR_DCBX,
1526 netdev->dcbnl_ops->setdcbx(netdev, value));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001527}
1528
Thomas Graf7be99412012-06-13 02:54:55 +00001529static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1530 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001531{
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001532 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1533 u8 value;
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001534 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001535 int getall = 0;
1536
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001537 if (!netdev->dcbnl_ops->getfeatcfg)
1538 return -EOPNOTSUPP;
1539
1540 if (!tb[DCB_ATTR_FEATCFG])
1541 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001542
1543 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1544 dcbnl_featcfg_nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001545 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001546 return ret;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001547
Thomas Graf7be99412012-06-13 02:54:55 +00001548 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1549 if (!nest)
1550 return -EMSGSIZE;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001551
1552 if (data[DCB_FEATCFG_ATTR_ALL])
1553 getall = 1;
1554
1555 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1556 if (!getall && !data[i])
1557 continue;
1558
1559 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001560 if (!ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001561 ret = nla_put_u8(skb, i, value);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001562
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001563 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +00001564 nla_nest_cancel(skb, nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001565 goto nla_put_failure;
1566 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001567 }
Thomas Graf7be99412012-06-13 02:54:55 +00001568 nla_nest_end(skb, nest);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001569
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001570nla_put_failure:
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001571 return ret;
1572}
1573
Thomas Graf7be99412012-06-13 02:54:55 +00001574static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1575 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001576{
1577 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001578 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001579 u8 value;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001580
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001581 if (!netdev->dcbnl_ops->setfeatcfg)
1582 return -ENOTSUPP;
1583
1584 if (!tb[DCB_ATTR_FEATCFG])
1585 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001586
1587 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1588 dcbnl_featcfg_nest);
1589
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001590 if (ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001591 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001592
1593 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1594 if (data[i] == NULL)
1595 continue;
1596
1597 value = nla_get_u8(data[i]);
1598
1599 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1600
1601 if (ret)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001602 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001603 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001604err:
Thomas Graf7be99412012-06-13 02:54:55 +00001605 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001606
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001607 return ret;
1608}
1609
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001610/* Handle CEE DCBX GET commands. */
Thomas Graf7be99412012-06-13 02:54:55 +00001611static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1612 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001613{
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001614 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001615
1616 if (!ops)
1617 return -EOPNOTSUPP;
1618
Thomas Graf7be99412012-06-13 02:54:55 +00001619 return dcbnl_cee_fill(skb, netdev);
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001620}
1621
Thomas Graf33a03aa2012-06-13 02:54:54 +00001622struct reply_func {
1623 /* reply netlink message type */
1624 int type;
1625
1626 /* function to fill message contents */
1627 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1628 struct nlattr **, struct sk_buff *);
1629};
1630
1631static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
Thomas Graf7be99412012-06-13 02:54:55 +00001632 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1633 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1634 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1635 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1636 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1637 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1638 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1639 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1640 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1641 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1642 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1643 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1644 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1645 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1646 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1647 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1648 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1649 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1650 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1651 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1652 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1653 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1654 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1655 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1656 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1657 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1658 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
Thomas Graf33a03aa2012-06-13 02:54:54 +00001659};
1660
Thomas Graf661d2962013-03-21 07:45:29 +00001661static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
Alexander Duyck2f90b862008-11-20 20:52:10 -08001662{
1663 struct net *net = sock_net(skb->sk);
1664 struct net_device *netdev;
Thomas Graf7a282bc2012-06-13 02:55:01 +00001665 struct dcbmsg *dcb = nlmsg_data(nlh);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001666 struct nlattr *tb[DCB_ATTR_MAX + 1];
Eric W. Biederman15e47302012-09-07 20:12:54 +00001667 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001668 int ret = -EINVAL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001669 struct sk_buff *reply_skb;
Thomas Graf39912f92012-06-13 22:34:03 +00001670 struct nlmsghdr *reply_nlh = NULL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001671 const struct reply_func *fn;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001672
Eric W. Biedermandfc47ef2012-11-16 03:03:00 +00001673 if ((nlh->nlmsg_type == RTM_SETDCB) && !capable(CAP_NET_ADMIN))
1674 return -EPERM;
1675
Alexander Duyck2f90b862008-11-20 20:52:10 -08001676 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1677 dcbnl_rtnl_policy);
1678 if (ret < 0)
1679 return ret;
1680
Thomas Graf33a03aa2012-06-13 02:54:54 +00001681 if (dcb->cmd > DCB_CMD_MAX)
1682 return -EINVAL;
1683
1684 /* check if a reply function has been defined for the command */
1685 fn = &reply_funcs[dcb->cmd];
1686 if (!fn->cb)
1687 return -EOPNOTSUPP;
1688
Alexander Duyck2f90b862008-11-20 20:52:10 -08001689 if (!tb[DCB_ATTR_IFNAME])
1690 return -EINVAL;
1691
John Fastabend7c77ab22012-12-09 20:48:13 +00001692 netdev = dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
Alexander Duyck2f90b862008-11-20 20:52:10 -08001693 if (!netdev)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001694 return -ENODEV;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001695
Thomas Graf3d1f4862012-06-13 02:54:58 +00001696 if (!netdev->dcbnl_ops) {
1697 ret = -EOPNOTSUPP;
1698 goto out;
1699 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08001700
Eric W. Biederman15e47302012-09-07 20:12:54 +00001701 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
Thomas Graf33a03aa2012-06-13 02:54:54 +00001702 nlh->nlmsg_flags, &reply_nlh);
1703 if (!reply_skb) {
1704 ret = -ENOBUFS;
1705 goto out;
1706 }
1707
1708 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1709 if (ret < 0) {
1710 nlmsg_free(reply_skb);
1711 goto out;
1712 }
1713
1714 nlmsg_end(reply_skb, reply_nlh);
1715
John Fastabend7c77ab22012-12-09 20:48:13 +00001716 ret = rtnl_unicast(reply_skb, net, portid);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001717out:
1718 dev_put(netdev);
1719 return ret;
1720}
1721
Thomas Graf716b31a2012-06-13 02:54:59 +00001722static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1723 int ifindex, int prio)
1724{
1725 struct dcb_app_type *itr;
1726
1727 list_for_each_entry(itr, &dcb_app_list, list) {
1728 if (itr->app.selector == app->selector &&
1729 itr->app.protocol == app->protocol &&
1730 itr->ifindex == ifindex &&
1731 (!prio || itr->app.priority == prio))
1732 return itr;
1733 }
1734
1735 return NULL;
1736}
1737
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001738static int dcb_app_add(const struct dcb_app *app, int ifindex)
1739{
1740 struct dcb_app_type *entry;
1741
1742 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1743 if (!entry)
1744 return -ENOMEM;
1745
1746 memcpy(&entry->app, app, sizeof(*app));
1747 entry->ifindex = ifindex;
1748 list_add(&entry->list, &dcb_app_list);
1749
1750 return 0;
1751}
1752
John Fastabend9ab933a2010-12-30 09:26:31 +00001753/**
1754 * dcb_getapp - retrieve the DCBX application user priority
1755 *
1756 * On success returns a non-zero 802.1p user priority bitmap
1757 * otherwise returns 0 as the invalid user priority bitmap to
1758 * indicate an error.
1759 */
1760u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1761{
1762 struct dcb_app_type *itr;
1763 u8 prio = 0;
1764
1765 spin_lock(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001766 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1767 prio = itr->app.priority;
John Fastabend9ab933a2010-12-30 09:26:31 +00001768 spin_unlock(&dcb_lock);
1769
1770 return prio;
1771}
1772EXPORT_SYMBOL(dcb_getapp);
1773
1774/**
John Fastabendb6db2172011-06-21 07:34:42 +00001775 * dcb_setapp - add CEE dcb application data to app list
John Fastabend9ab933a2010-12-30 09:26:31 +00001776 *
John Fastabendb6db2172011-06-21 07:34:42 +00001777 * Priority 0 is an invalid priority in CEE spec. This routine
1778 * removes applications from the app list if the priority is
1779 * set to zero.
John Fastabend9ab933a2010-12-30 09:26:31 +00001780 */
John Fastabendab6baf92011-06-21 07:34:58 +00001781int dcb_setapp(struct net_device *dev, struct dcb_app *new)
John Fastabend9ab933a2010-12-30 09:26:31 +00001782{
1783 struct dcb_app_type *itr;
John Fastabend7ec79272011-01-31 12:00:59 +00001784 struct dcb_app_type event;
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001785 int err = 0;
John Fastabend7ec79272011-01-31 12:00:59 +00001786
Mark Rustade290ed82011-10-06 08:52:33 +00001787 event.ifindex = dev->ifindex;
John Fastabend7ec79272011-01-31 12:00:59 +00001788 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001789 if (dev->dcbnl_ops->getdcbx)
1790 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabend9ab933a2010-12-30 09:26:31 +00001791
1792 spin_lock(&dcb_lock);
1793 /* Search for existing match and replace */
Thomas Graf716b31a2012-06-13 02:54:59 +00001794 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1795 if (new->priority)
1796 itr->app.priority = new->priority;
1797 else {
1798 list_del(&itr->list);
1799 kfree(itr);
John Fastabend9ab933a2010-12-30 09:26:31 +00001800 }
Thomas Graf716b31a2012-06-13 02:54:59 +00001801 goto out;
John Fastabend9ab933a2010-12-30 09:26:31 +00001802 }
1803 /* App type does not exist add new application type */
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001804 if (new->priority)
1805 err = dcb_app_add(new, dev->ifindex);
John Fastabend9ab933a2010-12-30 09:26:31 +00001806out:
1807 spin_unlock(&dcb_lock);
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001808 if (!err)
1809 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1810 return err;
John Fastabend9ab933a2010-12-30 09:26:31 +00001811}
1812EXPORT_SYMBOL(dcb_setapp);
1813
John Fastabendb6db2172011-06-21 07:34:42 +00001814/**
John Fastabenda364c8c2011-06-21 07:34:53 +00001815 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1816 *
1817 * Helper routine which on success returns a non-zero 802.1Qaz user
1818 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1819 * not found in APP list.
1820 */
1821u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1822{
1823 struct dcb_app_type *itr;
1824 u8 prio = 0;
1825
1826 spin_lock(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001827 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1828 prio |= 1 << itr->app.priority;
John Fastabenda364c8c2011-06-21 07:34:53 +00001829 spin_unlock(&dcb_lock);
1830
1831 return prio;
1832}
1833EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1834
1835/**
John Fastabendb6db2172011-06-21 07:34:42 +00001836 * dcb_ieee_setapp - add IEEE dcb application data to app list
1837 *
1838 * This adds Application data to the list. Multiple application
1839 * entries may exists for the same selector and protocol as long
1840 * as the priorities are different.
1841 */
1842int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1843{
John Fastabendb6db2172011-06-21 07:34:42 +00001844 struct dcb_app_type event;
1845 int err = 0;
1846
Mark Rustade290ed82011-10-06 08:52:33 +00001847 event.ifindex = dev->ifindex;
John Fastabendb6db2172011-06-21 07:34:42 +00001848 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001849 if (dev->dcbnl_ops->getdcbx)
1850 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendb6db2172011-06-21 07:34:42 +00001851
1852 spin_lock(&dcb_lock);
1853 /* Search for existing match and abort if found */
Thomas Graf716b31a2012-06-13 02:54:59 +00001854 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1855 err = -EEXIST;
1856 goto out;
John Fastabendb6db2172011-06-21 07:34:42 +00001857 }
1858
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001859 err = dcb_app_add(new, dev->ifindex);
John Fastabendb6db2172011-06-21 07:34:42 +00001860out:
1861 spin_unlock(&dcb_lock);
1862 if (!err)
1863 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1864 return err;
1865}
1866EXPORT_SYMBOL(dcb_ieee_setapp);
1867
John Fastabendf9ae7e42011-06-21 07:34:48 +00001868/**
1869 * dcb_ieee_delapp - delete IEEE dcb application data from list
1870 *
1871 * This removes a matching APP data from the APP list
1872 */
1873int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1874{
1875 struct dcb_app_type *itr;
1876 struct dcb_app_type event;
1877 int err = -ENOENT;
1878
Mark Rustade290ed82011-10-06 08:52:33 +00001879 event.ifindex = dev->ifindex;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001880 memcpy(&event.app, del, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001881 if (dev->dcbnl_ops->getdcbx)
1882 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001883
1884 spin_lock(&dcb_lock);
1885 /* Search for existing match and remove it. */
Thomas Graf716b31a2012-06-13 02:54:59 +00001886 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1887 list_del(&itr->list);
1888 kfree(itr);
1889 err = 0;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001890 }
1891
John Fastabendf9ae7e42011-06-21 07:34:48 +00001892 spin_unlock(&dcb_lock);
1893 if (!err)
1894 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1895 return err;
1896}
1897EXPORT_SYMBOL(dcb_ieee_delapp);
1898
Shmulik Ravid7c14c3f2010-12-30 06:27:10 +00001899static void dcb_flushapp(void)
John Fastabend9ab933a2010-12-30 09:26:31 +00001900{
1901 struct dcb_app_type *app;
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001902 struct dcb_app_type *tmp;
John Fastabend9ab933a2010-12-30 09:26:31 +00001903
1904 spin_lock(&dcb_lock);
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001905 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
John Fastabend9ab933a2010-12-30 09:26:31 +00001906 list_del(&app->list);
1907 kfree(app);
1908 }
1909 spin_unlock(&dcb_lock);
1910}
1911
Alexander Duyck2f90b862008-11-20 20:52:10 -08001912static int __init dcbnl_init(void)
1913{
John Fastabend9ab933a2010-12-30 09:26:31 +00001914 INIT_LIST_HEAD(&dcb_app_list);
1915
Greg Rosec7ac8672011-06-10 01:27:09 +00001916 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1917 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001918
1919 return 0;
1920}
1921module_init(dcbnl_init);
1922
1923static void __exit dcbnl_exit(void)
1924{
1925 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1926 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
John Fastabend9ab933a2010-12-30 09:26:31 +00001927 dcb_flushapp();
Alexander Duyck2f90b862008-11-20 20:52:10 -08001928}
1929module_exit(dcbnl_exit);