blob: 1b588e23cf80b561632b9b5e16b851dff218a933 [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
287 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
288
Thomas Graf7be99412012-06-13 02:54:55 +0000289 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800290}
291
Thomas Graf7be99412012-06-13 02:54:55 +0000292static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
293 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck46132182008-11-20 21:05:08 -0800294{
Alexander Duyck46132182008-11-20 21:05:08 -0800295 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
296 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000297 int ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800298 int i;
299 int getall = 0;
300
Thomas Graf3d1f4862012-06-13 02:54:58 +0000301 if (!tb[DCB_ATTR_CAP])
302 return -EINVAL;
303
304 if (!netdev->dcbnl_ops->getcap)
305 return -EOPNOTSUPP;
Alexander Duyck46132182008-11-20 21:05:08 -0800306
307 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
308 dcbnl_cap_nest);
309 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000310 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800311
Thomas Graf7be99412012-06-13 02:54:55 +0000312 nest = nla_nest_start(skb, DCB_ATTR_CAP);
Alexander Duyck46132182008-11-20 21:05:08 -0800313 if (!nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000314 return -EMSGSIZE;
Alexander Duyck46132182008-11-20 21:05:08 -0800315
316 if (data[DCB_CAP_ATTR_ALL])
317 getall = 1;
318
319 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
320 if (!getall && !data[i])
321 continue;
322
323 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
Thomas Graf7be99412012-06-13 02:54:55 +0000324 ret = nla_put_u8(skb, i, value);
Alexander Duyck46132182008-11-20 21:05:08 -0800325 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000326 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000327 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800328 }
329 }
330 }
Thomas Graf7be99412012-06-13 02:54:55 +0000331 nla_nest_end(skb, nest);
Alexander Duyck46132182008-11-20 21:05:08 -0800332
333 return 0;
Alexander Duyck46132182008-11-20 21:05:08 -0800334}
335
Thomas Graf7be99412012-06-13 02:54:55 +0000336static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
337 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800338{
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800339 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
340 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000341 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800342 int i;
343 int getall = 0;
344
Thomas Graf3d1f4862012-06-13 02:54:58 +0000345 if (!tb[DCB_ATTR_NUMTCS])
346 return -EINVAL;
347
348 if (!netdev->dcbnl_ops->getnumtcs)
349 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800350
351 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
352 dcbnl_numtcs_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000353 if (ret)
354 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800355
Thomas Graf7be99412012-06-13 02:54:55 +0000356 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000357 if (!nest)
358 return -EMSGSIZE;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800359
360 if (data[DCB_NUMTCS_ATTR_ALL])
361 getall = 1;
362
363 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
364 if (!getall && !data[i])
365 continue;
366
367 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
368 if (!ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000369 ret = nla_put_u8(skb, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800370 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000371 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000372 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800373 }
Thomas Graf3d1f4862012-06-13 02:54:58 +0000374 } else
375 return -EINVAL;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800376 }
Thomas Graf7be99412012-06-13 02:54:55 +0000377 nla_nest_end(skb, nest);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800378
379 return 0;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800380}
381
Thomas Graf7be99412012-06-13 02:54:55 +0000382static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
383 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800384{
385 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000386 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800387 u8 value;
388 int i;
389
Thomas Graf3d1f4862012-06-13 02:54:58 +0000390 if (!tb[DCB_ATTR_NUMTCS])
391 return -EINVAL;
392
393 if (!netdev->dcbnl_ops->setnumtcs)
394 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800395
396 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
397 dcbnl_numtcs_nest);
Thomas Graf7be99412012-06-13 02:54:55 +0000398 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000399 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800400
401 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
402 if (data[i] == NULL)
403 continue;
404
405 value = nla_get_u8(data[i]);
406
407 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800408 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +0000409 break;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800410 }
411
Thomas Graf7be99412012-06-13 02:54:55 +0000412 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800413}
414
Thomas Graf7be99412012-06-13 02:54:55 +0000415static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
416 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800417{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800418 if (!netdev->dcbnl_ops->getpfcstate)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000419 return -EOPNOTSUPP;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800420
Thomas Graf7be99412012-06-13 02:54:55 +0000421 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
422 netdev->dcbnl_ops->getpfcstate(netdev));
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800423}
424
Thomas Graf7be99412012-06-13 02:54:55 +0000425static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
426 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800427{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800428 u8 value;
429
Thomas Graf3d1f4862012-06-13 02:54:58 +0000430 if (!tb[DCB_ATTR_PFC_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000431 return -EINVAL;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800432
Thomas Graf3d1f4862012-06-13 02:54:58 +0000433 if (!netdev->dcbnl_ops->setpfcstate)
434 return -EOPNOTSUPP;
435
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800436 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
437
438 netdev->dcbnl_ops->setpfcstate(netdev, value);
439
Thomas Graf7be99412012-06-13 02:54:55 +0000440 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800441}
442
Thomas Graf7be99412012-06-13 02:54:55 +0000443static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
444 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000445{
Yi Zou57949682009-08-31 12:33:40 +0000446 struct nlattr *app_nest;
447 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
448 u16 id;
449 u8 up, idtype;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000450 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000451
John Fastabend3dce38a2011-01-21 16:35:18 +0000452 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000453 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000454
455 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
456 dcbnl_app_nest);
457 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000458 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000459
Yi Zou57949682009-08-31 12:33:40 +0000460 /* all must be non-null */
461 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
462 (!app_tb[DCB_APP_ATTR_ID]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000463 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000464
465 /* either by eth type or by socket number */
466 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
467 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
468 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000469 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000470
471 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
John Fastabend3dce38a2011-01-21 16:35:18 +0000472
473 if (netdev->dcbnl_ops->getapp) {
474 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
475 } else {
476 struct dcb_app app = {
477 .selector = idtype,
478 .protocol = id,
479 };
480 up = dcb_getapp(netdev, &app);
481 }
Yi Zou57949682009-08-31 12:33:40 +0000482
Thomas Graf7be99412012-06-13 02:54:55 +0000483 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
484 if (!app_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000485 return -EMSGSIZE;
Yi Zou57949682009-08-31 12:33:40 +0000486
Thomas Graf7be99412012-06-13 02:54:55 +0000487 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
Yi Zou57949682009-08-31 12:33:40 +0000488 if (ret)
489 goto out_cancel;
490
Thomas Graf7be99412012-06-13 02:54:55 +0000491 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
Yi Zou57949682009-08-31 12:33:40 +0000492 if (ret)
493 goto out_cancel;
494
Thomas Graf7be99412012-06-13 02:54:55 +0000495 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
Yi Zou57949682009-08-31 12:33:40 +0000496 if (ret)
497 goto out_cancel;
498
Thomas Graf7be99412012-06-13 02:54:55 +0000499 nla_nest_end(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000500
Thomas Graf3d1f4862012-06-13 02:54:58 +0000501 return 0;
Yi Zou57949682009-08-31 12:33:40 +0000502
503out_cancel:
Thomas Graf7be99412012-06-13 02:54:55 +0000504 nla_nest_cancel(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000505 return ret;
506}
507
Thomas Graf7be99412012-06-13 02:54:55 +0000508static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
509 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000510{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000511 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000512 u16 id;
513 u8 up, idtype;
514 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
515
John Fastabend9ab933a2010-12-30 09:26:31 +0000516 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000517 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000518
519 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
520 dcbnl_app_nest);
521 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000522 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000523
Yi Zou57949682009-08-31 12:33:40 +0000524 /* all must be non-null */
525 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
526 (!app_tb[DCB_APP_ATTR_ID]) ||
527 (!app_tb[DCB_APP_ATTR_PRIORITY]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000528 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000529
530 /* either by eth type or by socket number */
531 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
532 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
533 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000534 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000535
536 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
537 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
538
John Fastabend9ab933a2010-12-30 09:26:31 +0000539 if (netdev->dcbnl_ops->setapp) {
Thomas Graf3d1f4862012-06-13 02:54:58 +0000540 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
John Fastabend9ab933a2010-12-30 09:26:31 +0000541 } else {
542 struct dcb_app app;
543 app.selector = idtype;
544 app.protocol = id;
545 app.priority = up;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000546 ret = dcb_setapp(netdev, &app);
John Fastabend9ab933a2010-12-30 09:26:31 +0000547 }
548
Thomas Graf7be99412012-06-13 02:54:55 +0000549 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
John Fastabend08157982012-04-20 09:49:23 +0000550 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000551
Yi Zou57949682009-08-31 12:33:40 +0000552 return ret;
553}
554
Thomas Graf7be99412012-06-13 02:54:55 +0000555static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
556 struct nlattr **tb, struct sk_buff *skb, int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800557{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800558 struct nlattr *pg_nest, *param_nest, *data;
559 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
560 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
561 u8 prio, pgid, tc_pct, up_map;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000562 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800563 int getall = 0;
564 int i;
565
Thomas Graf3d1f4862012-06-13 02:54:58 +0000566 if (!tb[DCB_ATTR_PG_CFG])
567 return -EINVAL;
568
569 if (!netdev->dcbnl_ops->getpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800570 !netdev->dcbnl_ops->getpgtccfgrx ||
571 !netdev->dcbnl_ops->getpgbwgcfgtx ||
572 !netdev->dcbnl_ops->getpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000573 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800574
575 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
576 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800577 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000578 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800579
Thomas Graf7be99412012-06-13 02:54:55 +0000580 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800581 if (!pg_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000582 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800583
584 if (pg_tb[DCB_PG_ATTR_TC_ALL])
585 getall = 1;
586
587 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
588 if (!getall && !pg_tb[i])
589 continue;
590
591 if (pg_tb[DCB_PG_ATTR_TC_ALL])
592 data = pg_tb[DCB_PG_ATTR_TC_ALL];
593 else
594 data = pg_tb[i];
595 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
596 data, dcbnl_tc_param_nest);
597 if (ret)
598 goto err_pg;
599
Thomas Graf7be99412012-06-13 02:54:55 +0000600 param_nest = nla_nest_start(skb, i);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800601 if (!param_nest)
602 goto err_pg;
603
604 pgid = DCB_ATTR_VALUE_UNDEFINED;
605 prio = DCB_ATTR_VALUE_UNDEFINED;
606 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
607 up_map = DCB_ATTR_VALUE_UNDEFINED;
608
609 if (dir) {
610 /* Rx */
611 netdev->dcbnl_ops->getpgtccfgrx(netdev,
612 i - DCB_PG_ATTR_TC_0, &prio,
613 &pgid, &tc_pct, &up_map);
614 } else {
615 /* Tx */
616 netdev->dcbnl_ops->getpgtccfgtx(netdev,
617 i - DCB_PG_ATTR_TC_0, &prio,
618 &pgid, &tc_pct, &up_map);
619 }
620
621 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
622 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000623 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800624 DCB_TC_ATTR_PARAM_PGID, pgid);
625 if (ret)
626 goto err_param;
627 }
628 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
629 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000630 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800631 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
632 if (ret)
633 goto err_param;
634 }
635 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
636 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000637 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800638 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
639 if (ret)
640 goto err_param;
641 }
642 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
643 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000644 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800645 tc_pct);
646 if (ret)
647 goto err_param;
648 }
Thomas Graf7be99412012-06-13 02:54:55 +0000649 nla_nest_end(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800650 }
651
652 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
653 getall = 1;
654 else
655 getall = 0;
656
657 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
658 if (!getall && !pg_tb[i])
659 continue;
660
661 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
662
663 if (dir) {
664 /* Rx */
665 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
666 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
667 } else {
668 /* Tx */
669 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
670 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
671 }
Thomas Graf7be99412012-06-13 02:54:55 +0000672 ret = nla_put_u8(skb, i, tc_pct);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800673 if (ret)
674 goto err_pg;
675 }
676
Thomas Graf7be99412012-06-13 02:54:55 +0000677 nla_nest_end(skb, pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800678
679 return 0;
680
681err_param:
Thomas Graf7be99412012-06-13 02:54:55 +0000682 nla_nest_cancel(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800683err_pg:
Thomas Graf7be99412012-06-13 02:54:55 +0000684 nla_nest_cancel(skb, pg_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000685
686 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800687}
688
Thomas Graf7be99412012-06-13 02:54:55 +0000689static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
690 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800691{
Thomas Graf7be99412012-06-13 02:54:55 +0000692 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800693}
694
Thomas Graf7be99412012-06-13 02:54:55 +0000695static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
696 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800697{
Thomas Graf7be99412012-06-13 02:54:55 +0000698 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800699}
700
Thomas Graf7be99412012-06-13 02:54:55 +0000701static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
702 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800703{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800704 u8 value;
705
Thomas Graf3d1f4862012-06-13 02:54:58 +0000706 if (!tb[DCB_ATTR_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000707 return -EINVAL;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800708
Thomas Graf3d1f4862012-06-13 02:54:58 +0000709 if (!netdev->dcbnl_ops->setstate)
710 return -EOPNOTSUPP;
711
Alexander Duyck2f90b862008-11-20 20:52:10 -0800712 value = nla_get_u8(tb[DCB_ATTR_STATE]);
713
Thomas Graf7be99412012-06-13 02:54:55 +0000714 return nla_put_u8(skb, DCB_ATTR_STATE,
715 netdev->dcbnl_ops->setstate(netdev, value));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800716}
717
Thomas Graf7be99412012-06-13 02:54:55 +0000718static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
719 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800720{
721 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
722 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000723 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800724 u8 value;
725
Thomas Graf3d1f4862012-06-13 02:54:58 +0000726 if (!tb[DCB_ATTR_PFC_CFG])
727 return -EINVAL;
728
729 if (!netdev->dcbnl_ops->setpfccfg)
730 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800731
732 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
733 tb[DCB_ATTR_PFC_CFG],
734 dcbnl_pfc_up_nest);
735 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000736 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800737
738 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
739 if (data[i] == NULL)
740 continue;
741 value = nla_get_u8(data[i]);
742 netdev->dcbnl_ops->setpfccfg(netdev,
743 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
744 }
745
Thomas Graf7be99412012-06-13 02:54:55 +0000746 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800747}
748
Thomas Graf7be99412012-06-13 02:54:55 +0000749static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
750 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800751{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000752 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800753
Thomas Graf3d1f4862012-06-13 02:54:58 +0000754 if (!tb[DCB_ATTR_SET_ALL])
755 return -EINVAL;
756
757 if (!netdev->dcbnl_ops->setall)
758 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800759
Thomas Graf7be99412012-06-13 02:54:55 +0000760 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
761 netdev->dcbnl_ops->setall(netdev));
John Fastabend08157982012-04-20 09:49:23 +0000762 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800763
764 return ret;
765}
766
Thomas Graf7be99412012-06-13 02:54:55 +0000767static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
768 u32 seq, struct nlattr **tb, struct sk_buff *skb,
769 int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800770{
771 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
772 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000773 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800774 int i;
775 u8 pgid;
776 u8 up_map;
777 u8 prio;
778 u8 tc_pct;
779
Thomas Graf3d1f4862012-06-13 02:54:58 +0000780 if (!tb[DCB_ATTR_PG_CFG])
781 return -EINVAL;
782
783 if (!netdev->dcbnl_ops->setpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800784 !netdev->dcbnl_ops->setpgtccfgrx ||
785 !netdev->dcbnl_ops->setpgbwgcfgtx ||
786 !netdev->dcbnl_ops->setpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000787 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800788
789 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
790 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
791 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000792 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800793
794 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
795 if (!pg_tb[i])
796 continue;
797
798 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
799 pg_tb[i], dcbnl_tc_param_nest);
800 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000801 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800802
803 pgid = DCB_ATTR_VALUE_UNDEFINED;
804 prio = DCB_ATTR_VALUE_UNDEFINED;
805 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
806 up_map = DCB_ATTR_VALUE_UNDEFINED;
807
808 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
809 prio =
810 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
811
812 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
813 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
814
815 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
816 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
817
818 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
819 up_map =
820 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
821
822 /* dir: Tx = 0, Rx = 1 */
823 if (dir) {
824 /* Rx */
825 netdev->dcbnl_ops->setpgtccfgrx(netdev,
826 i - DCB_PG_ATTR_TC_0,
827 prio, pgid, tc_pct, up_map);
828 } else {
829 /* Tx */
830 netdev->dcbnl_ops->setpgtccfgtx(netdev,
831 i - DCB_PG_ATTR_TC_0,
832 prio, pgid, tc_pct, up_map);
833 }
834 }
835
836 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
837 if (!pg_tb[i])
838 continue;
839
840 tc_pct = nla_get_u8(pg_tb[i]);
841
842 /* dir: Tx = 0, Rx = 1 */
843 if (dir) {
844 /* Rx */
845 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
846 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
847 } else {
848 /* Tx */
849 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
850 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
851 }
852 }
853
John Fastabendbb1dfef2012-06-20 19:56:21 +0000854 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800855}
856
Thomas Graf7be99412012-06-13 02:54:55 +0000857static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
858 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800859{
Thomas Graf7be99412012-06-13 02:54:55 +0000860 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800861}
862
Thomas Graf7be99412012-06-13 02:54:55 +0000863static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
864 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800865{
Thomas Graf7be99412012-06-13 02:54:55 +0000866 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800867}
868
Thomas Graf7be99412012-06-13 02:54:55 +0000869static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
870 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800871{
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800872 struct nlattr *bcn_nest;
873 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
874 u8 value_byte;
875 u32 value_integer;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000876 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800877 bool getall = false;
878 int i;
879
Thomas Graf3d1f4862012-06-13 02:54:58 +0000880 if (!tb[DCB_ATTR_BCN])
881 return -EINVAL;
882
883 if (!netdev->dcbnl_ops->getbcnrp ||
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800884 !netdev->dcbnl_ops->getbcncfg)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000885 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800886
887 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
888 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800889 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000890 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800891
Thomas Graf7be99412012-06-13 02:54:55 +0000892 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800893 if (!bcn_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000894 return -EMSGSIZE;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800895
896 if (bcn_tb[DCB_BCN_ATTR_ALL])
897 getall = true;
898
899 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
900 if (!getall && !bcn_tb[i])
901 continue;
902
903 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
904 &value_byte);
Thomas Graf7be99412012-06-13 02:54:55 +0000905 ret = nla_put_u8(skb, i, value_byte);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800906 if (ret)
907 goto err_bcn;
908 }
909
Don Skidmoref4314e82008-12-21 20:10:29 -0800910 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800911 if (!getall && !bcn_tb[i])
912 continue;
913
914 netdev->dcbnl_ops->getbcncfg(netdev, i,
915 &value_integer);
Thomas Graf7be99412012-06-13 02:54:55 +0000916 ret = nla_put_u32(skb, i, value_integer);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800917 if (ret)
918 goto err_bcn;
919 }
920
Thomas Graf7be99412012-06-13 02:54:55 +0000921 nla_nest_end(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800922
923 return 0;
924
925err_bcn:
Thomas Graf7be99412012-06-13 02:54:55 +0000926 nla_nest_cancel(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800927 return ret;
928}
929
Thomas Graf7be99412012-06-13 02:54:55 +0000930static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
931 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800932{
933 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
934 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000935 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800936 u8 value_byte;
937 u32 value_int;
938
Thomas Graf3d1f4862012-06-13 02:54:58 +0000939 if (!tb[DCB_ATTR_BCN])
940 return -EINVAL;
941
942 if (!netdev->dcbnl_ops->setbcncfg ||
Joe Perchesf64f9e72009-11-29 16:55:45 -0800943 !netdev->dcbnl_ops->setbcnrp)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000944 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800945
946 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
947 tb[DCB_ATTR_BCN],
948 dcbnl_pfc_up_nest);
949 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000950 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800951
952 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
953 if (data[i] == NULL)
954 continue;
955 value_byte = nla_get_u8(data[i]);
956 netdev->dcbnl_ops->setbcnrp(netdev,
957 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
958 }
959
Don Skidmoref4314e82008-12-21 20:10:29 -0800960 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800961 if (data[i] == NULL)
962 continue;
963 value_int = nla_get_u32(data[i]);
964 netdev->dcbnl_ops->setbcncfg(netdev,
965 i, value_int);
966 }
967
Thomas Graf3d1f4862012-06-13 02:54:58 +0000968 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800969}
970
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +0000971static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
972 int app_nested_type, int app_info_type,
973 int app_entry_type)
Shmulik Ravideed84712011-02-27 05:04:31 +0000974{
975 struct dcb_peer_app_info info;
976 struct dcb_app *table = NULL;
977 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
978 u16 app_count;
979 int err;
980
981
982 /**
983 * retrieve the peer app configuration form the driver. If the driver
984 * handlers fail exit without doing anything
985 */
986 err = ops->peer_getappinfo(netdev, &info, &app_count);
987 if (!err && app_count) {
988 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
989 if (!table)
990 return -ENOMEM;
991
992 err = ops->peer_getapptable(netdev, table);
993 }
994
995 if (!err) {
996 u16 i;
997 struct nlattr *app;
998
999 /**
1000 * build the message, from here on the only possible failure
1001 * is due to the skb size
1002 */
1003 err = -EMSGSIZE;
1004
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001005 app = nla_nest_start(skb, app_nested_type);
Shmulik Ravideed84712011-02-27 05:04:31 +00001006 if (!app)
1007 goto nla_put_failure;
1008
David S. Miller1eb4c972012-04-01 20:03:01 -04001009 if (app_info_type &&
1010 nla_put(skb, app_info_type, sizeof(info), &info))
1011 goto nla_put_failure;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001012
David S. Miller1eb4c972012-04-01 20:03:01 -04001013 for (i = 0; i < app_count; i++) {
1014 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1015 &table[i]))
1016 goto nla_put_failure;
1017 }
Shmulik Ravideed84712011-02-27 05:04:31 +00001018 nla_nest_end(skb, app);
1019 }
1020 err = 0;
1021
1022nla_put_failure:
1023 kfree(table);
1024 return err;
1025}
John Fastabend3e290272010-12-30 09:25:46 +00001026
1027/* Handle IEEE 802.1Qaz GET commands. */
John Fastabend314b4772011-06-21 07:34:37 +00001028static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
John Fastabend3e290272010-12-30 09:25:46 +00001029{
John Fastabend9ab933a2010-12-30 09:26:31 +00001030 struct nlattr *ieee, *app;
1031 struct dcb_app_type *itr;
John Fastabend3e290272010-12-30 09:25:46 +00001032 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabendc7797ba2011-06-21 07:34:31 +00001033 int dcbx;
Thomas Graf3d1f4862012-06-13 02:54:58 +00001034 int err;
John Fastabend3e290272010-12-30 09:25:46 +00001035
David S. Miller1eb4c972012-04-01 20:03:01 -04001036 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001037 return -EMSGSIZE;
1038
John Fastabend3e290272010-12-30 09:25:46 +00001039 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1040 if (!ieee)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001041 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001042
1043 if (ops->ieee_getets) {
1044 struct ieee_ets ets;
1045 err = ops->ieee_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001046 if (!err &&
1047 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001048 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001049 }
1050
Amir Vadai08f10af2012-04-04 21:33:30 +00001051 if (ops->ieee_getmaxrate) {
1052 struct ieee_maxrate maxrate;
1053 err = ops->ieee_getmaxrate(netdev, &maxrate);
1054 if (!err) {
1055 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1056 sizeof(maxrate), &maxrate);
1057 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001058 return -EMSGSIZE;
Amir Vadai08f10af2012-04-04 21:33:30 +00001059 }
1060 }
1061
John Fastabend3e290272010-12-30 09:25:46 +00001062 if (ops->ieee_getpfc) {
1063 struct ieee_pfc pfc;
1064 err = ops->ieee_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001065 if (!err &&
1066 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001067 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001068 }
1069
John Fastabend9ab933a2010-12-30 09:26:31 +00001070 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1071 if (!app)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001072 return -EMSGSIZE;
John Fastabend9ab933a2010-12-30 09:26:31 +00001073
1074 spin_lock(&dcb_lock);
1075 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001076 if (itr->ifindex == netdev->ifindex) {
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001077 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1078 &itr->app);
1079 if (err) {
1080 spin_unlock(&dcb_lock);
Thomas Graf3d1f4862012-06-13 02:54:58 +00001081 return -EMSGSIZE;
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001082 }
1083 }
John Fastabend9ab933a2010-12-30 09:26:31 +00001084 }
John Fastabendc7797ba2011-06-21 07:34:31 +00001085
1086 if (netdev->dcbnl_ops->getdcbx)
1087 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1088 else
1089 dcbx = -EOPNOTSUPP;
1090
John Fastabend9ab933a2010-12-30 09:26:31 +00001091 spin_unlock(&dcb_lock);
1092 nla_nest_end(skb, app);
1093
Shmulik Ravideed84712011-02-27 05:04:31 +00001094 /* get peer info if available */
1095 if (ops->ieee_peer_getets) {
1096 struct ieee_ets ets;
1097 err = ops->ieee_peer_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001098 if (!err &&
1099 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001100 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001101 }
1102
1103 if (ops->ieee_peer_getpfc) {
1104 struct ieee_pfc pfc;
1105 err = ops->ieee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001106 if (!err &&
1107 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001108 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001109 }
1110
1111 if (ops->peer_getappinfo && ops->peer_getapptable) {
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001112 err = dcbnl_build_peer_app(netdev, skb,
1113 DCB_ATTR_IEEE_PEER_APP,
1114 DCB_ATTR_IEEE_APP_UNSPEC,
1115 DCB_ATTR_IEEE_APP);
Shmulik Ravideed84712011-02-27 05:04:31 +00001116 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001117 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001118 }
1119
John Fastabend3e290272010-12-30 09:25:46 +00001120 nla_nest_end(skb, ieee);
John Fastabendc7797ba2011-06-21 07:34:31 +00001121 if (dcbx >= 0) {
1122 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1123 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001124 return -EMSGSIZE;
John Fastabendc7797ba2011-06-21 07:34:31 +00001125 }
John Fastabend3e290272010-12-30 09:25:46 +00001126
John Fastabend314b4772011-06-21 07:34:37 +00001127 return 0;
John Fastabend3e290272010-12-30 09:25:46 +00001128}
1129
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001130static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1131 int dir)
1132{
1133 u8 pgid, up_map, prio, tc_pct;
1134 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1135 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1136 struct nlattr *pg = nla_nest_start(skb, i);
1137
1138 if (!pg)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001139 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001140
1141 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1142 struct nlattr *tc_nest = nla_nest_start(skb, i);
1143
1144 if (!tc_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001145 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001146
1147 pgid = DCB_ATTR_VALUE_UNDEFINED;
1148 prio = DCB_ATTR_VALUE_UNDEFINED;
1149 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1150 up_map = DCB_ATTR_VALUE_UNDEFINED;
1151
1152 if (!dir)
1153 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1154 &prio, &pgid, &tc_pct, &up_map);
1155 else
1156 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1157 &prio, &pgid, &tc_pct, &up_map);
1158
David S. Miller1eb4c972012-04-01 20:03:01 -04001159 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1160 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1161 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1162 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001163 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001164 nla_nest_end(skb, tc_nest);
1165 }
1166
1167 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1168 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1169
1170 if (!dir)
1171 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1172 &tc_pct);
1173 else
1174 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1175 &tc_pct);
David S. Miller1eb4c972012-04-01 20:03:01 -04001176 if (nla_put_u8(skb, i, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001177 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001178 }
1179 nla_nest_end(skb, pg);
1180 return 0;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001181}
1182
1183static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1184{
1185 struct nlattr *cee, *app;
1186 struct dcb_app_type *itr;
1187 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1188 int dcbx, i, err = -EMSGSIZE;
1189 u8 value;
1190
David S. Miller1eb4c972012-04-01 20:03:01 -04001191 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1192 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001193 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1194 if (!cee)
1195 goto nla_put_failure;
1196
1197 /* local pg */
1198 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1199 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1200 if (err)
1201 goto nla_put_failure;
1202 }
1203
1204 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1205 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1206 if (err)
1207 goto nla_put_failure;
1208 }
1209
1210 /* local pfc */
1211 if (ops->getpfccfg) {
1212 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1213
1214 if (!pfc_nest)
1215 goto nla_put_failure;
1216
1217 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1218 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
David S. Miller1eb4c972012-04-01 20:03:01 -04001219 if (nla_put_u8(skb, i, value))
1220 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001221 }
1222 nla_nest_end(skb, pfc_nest);
1223 }
1224
1225 /* local app */
1226 spin_lock(&dcb_lock);
1227 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1228 if (!app)
Dan Carpenter40f5d722011-07-07 21:27:24 +00001229 goto dcb_unlock;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001230
1231 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001232 if (itr->ifindex == netdev->ifindex) {
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001233 struct nlattr *app_nest = nla_nest_start(skb,
1234 DCB_ATTR_APP);
1235 if (!app_nest)
1236 goto dcb_unlock;
1237
1238 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1239 itr->app.selector);
1240 if (err)
1241 goto dcb_unlock;
1242
1243 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1244 itr->app.protocol);
1245 if (err)
1246 goto dcb_unlock;
1247
1248 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1249 itr->app.priority);
1250 if (err)
1251 goto dcb_unlock;
1252
1253 nla_nest_end(skb, app_nest);
1254 }
1255 }
1256 nla_nest_end(skb, app);
1257
1258 if (netdev->dcbnl_ops->getdcbx)
1259 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1260 else
1261 dcbx = -EOPNOTSUPP;
1262
1263 spin_unlock(&dcb_lock);
1264
1265 /* features flags */
1266 if (ops->getfeatcfg) {
1267 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1268 if (!feat)
1269 goto nla_put_failure;
1270
1271 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1272 i++)
David S. Miller1eb4c972012-04-01 20:03:01 -04001273 if (!ops->getfeatcfg(netdev, i, &value) &&
1274 nla_put_u8(skb, i, value))
1275 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001276
1277 nla_nest_end(skb, feat);
1278 }
1279
1280 /* peer info if available */
1281 if (ops->cee_peer_getpg) {
1282 struct cee_pg pg;
1283 err = ops->cee_peer_getpg(netdev, &pg);
David S. Miller1eb4c972012-04-01 20:03:01 -04001284 if (!err &&
1285 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1286 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001287 }
1288
1289 if (ops->cee_peer_getpfc) {
1290 struct cee_pfc pfc;
1291 err = ops->cee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001292 if (!err &&
1293 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1294 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001295 }
1296
1297 if (ops->peer_getappinfo && ops->peer_getapptable) {
1298 err = dcbnl_build_peer_app(netdev, skb,
1299 DCB_ATTR_CEE_PEER_APP_TABLE,
1300 DCB_ATTR_CEE_PEER_APP_INFO,
1301 DCB_ATTR_CEE_PEER_APP);
1302 if (err)
1303 goto nla_put_failure;
1304 }
1305 nla_nest_end(skb, cee);
1306
1307 /* DCBX state */
1308 if (dcbx >= 0) {
1309 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1310 if (err)
1311 goto nla_put_failure;
1312 }
1313 return 0;
1314
1315dcb_unlock:
1316 spin_unlock(&dcb_lock);
1317nla_put_failure:
1318 return err;
1319}
1320
1321static int dcbnl_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001322 u32 seq, u32 portid, int dcbx_ver)
John Fastabend314b4772011-06-21 07:34:37 +00001323{
1324 struct net *net = dev_net(dev);
1325 struct sk_buff *skb;
1326 struct nlmsghdr *nlh;
John Fastabend314b4772011-06-21 07:34:37 +00001327 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1328 int err;
1329
1330 if (!ops)
1331 return -EOPNOTSUPP;
1332
Eric W. Biederman15e47302012-09-07 20:12:54 +00001333 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
John Fastabend314b4772011-06-21 07:34:37 +00001334 if (!skb)
1335 return -ENOBUFS;
1336
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001337 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1338 err = dcbnl_ieee_fill(skb, dev);
1339 else
1340 err = dcbnl_cee_fill(skb, dev);
1341
John Fastabend314b4772011-06-21 07:34:37 +00001342 if (err < 0) {
1343 /* Report error to broadcast listeners */
Thomas Grafab6d4702012-06-13 02:54:57 +00001344 nlmsg_free(skb);
John Fastabend314b4772011-06-21 07:34:37 +00001345 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1346 } else {
1347 /* End nlmsg and notify broadcast listeners */
1348 nlmsg_end(skb, nlh);
1349 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1350 }
1351
1352 return err;
1353}
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001354
1355int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001356 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001357{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001358 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001359}
1360EXPORT_SYMBOL(dcbnl_ieee_notify);
1361
1362int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001363 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001364{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001365 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001366}
1367EXPORT_SYMBOL(dcbnl_cee_notify);
John Fastabend314b4772011-06-21 07:34:37 +00001368
1369/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1370 * be completed the entire msg is aborted and error value is returned.
1371 * No attempt is made to reconcile the case where only part of the
1372 * cmd can be completed.
1373 */
Thomas Graf7be99412012-06-13 02:54:55 +00001374static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1375 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001376{
1377 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1378 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001379 int err;
John Fastabend314b4772011-06-21 07:34:37 +00001380
1381 if (!ops)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001382 return -EOPNOTSUPP;
John Fastabend314b4772011-06-21 07:34:37 +00001383
John Fastabend4003b652011-06-21 07:35:04 +00001384 if (!tb[DCB_ATTR_IEEE])
1385 return -EINVAL;
1386
John Fastabend314b4772011-06-21 07:34:37 +00001387 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1388 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1389 if (err)
1390 return err;
1391
1392 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1393 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1394 err = ops->ieee_setets(netdev, ets);
1395 if (err)
1396 goto err;
1397 }
1398
Amir Vadai08f10af2012-04-04 21:33:30 +00001399 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1400 struct ieee_maxrate *maxrate =
1401 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1402 err = ops->ieee_setmaxrate(netdev, maxrate);
1403 if (err)
1404 goto err;
1405 }
1406
John Fastabend314b4772011-06-21 07:34:37 +00001407 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1408 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1409 err = ops->ieee_setpfc(netdev, pfc);
1410 if (err)
1411 goto err;
1412 }
1413
1414 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1415 struct nlattr *attr;
1416 int rem;
1417
1418 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1419 struct dcb_app *app_data;
1420 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1421 continue;
1422 app_data = nla_data(attr);
1423 if (ops->ieee_setapp)
1424 err = ops->ieee_setapp(netdev, app_data);
1425 else
John Fastabendb6db2172011-06-21 07:34:42 +00001426 err = dcb_ieee_setapp(netdev, app_data);
John Fastabend314b4772011-06-21 07:34:37 +00001427 if (err)
1428 goto err;
1429 }
1430 }
1431
1432err:
Thomas Graf7be99412012-06-13 02:54:55 +00001433 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001434 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
John Fastabend314b4772011-06-21 07:34:37 +00001435 return err;
1436}
1437
Thomas Graf7be99412012-06-13 02:54:55 +00001438static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1439 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001440{
John Fastabend314b4772011-06-21 07:34:37 +00001441 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabend314b4772011-06-21 07:34:37 +00001442
1443 if (!ops)
1444 return -EOPNOTSUPP;
1445
Thomas Graf7be99412012-06-13 02:54:55 +00001446 return dcbnl_ieee_fill(skb, netdev);
John Fastabend314b4772011-06-21 07:34:37 +00001447}
John Fastabendf9ae7e42011-06-21 07:34:48 +00001448
Thomas Graf7be99412012-06-13 02:54:55 +00001449static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1450 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabendf9ae7e42011-06-21 07:34:48 +00001451{
1452 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1453 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001454 int err;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001455
1456 if (!ops)
1457 return -EOPNOTSUPP;
1458
1459 if (!tb[DCB_ATTR_IEEE])
1460 return -EINVAL;
1461
1462 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1463 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1464 if (err)
1465 return err;
1466
1467 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1468 struct nlattr *attr;
1469 int rem;
1470
1471 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1472 struct dcb_app *app_data;
1473
1474 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1475 continue;
1476 app_data = nla_data(attr);
1477 if (ops->ieee_delapp)
1478 err = ops->ieee_delapp(netdev, app_data);
1479 else
1480 err = dcb_ieee_delapp(netdev, app_data);
1481 if (err)
1482 goto err;
1483 }
1484 }
1485
1486err:
Thomas Graf7be99412012-06-13 02:54:55 +00001487 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001488 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001489 return err;
1490}
1491
1492
Shmulik Ravid6241b622010-12-30 06:26:48 +00001493/* DCBX configuration */
Thomas Graf7be99412012-06-13 02:54:55 +00001494static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1495 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001496{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001497 if (!netdev->dcbnl_ops->getdcbx)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001498 return -EOPNOTSUPP;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001499
Thomas Graf7be99412012-06-13 02:54:55 +00001500 return nla_put_u8(skb, DCB_ATTR_DCBX,
1501 netdev->dcbnl_ops->getdcbx(netdev));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001502}
1503
Thomas Graf7be99412012-06-13 02:54:55 +00001504static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1505 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001506{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001507 u8 value;
1508
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001509 if (!netdev->dcbnl_ops->setdcbx)
1510 return -EOPNOTSUPP;
1511
1512 if (!tb[DCB_ATTR_DCBX])
1513 return -EINVAL;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001514
1515 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1516
Thomas Graf7be99412012-06-13 02:54:55 +00001517 return nla_put_u8(skb, DCB_ATTR_DCBX,
1518 netdev->dcbnl_ops->setdcbx(netdev, value));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001519}
1520
Thomas Graf7be99412012-06-13 02:54:55 +00001521static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1522 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001523{
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001524 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1525 u8 value;
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001526 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001527 int getall = 0;
1528
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001529 if (!netdev->dcbnl_ops->getfeatcfg)
1530 return -EOPNOTSUPP;
1531
1532 if (!tb[DCB_ATTR_FEATCFG])
1533 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001534
1535 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1536 dcbnl_featcfg_nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001537 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001538 return ret;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001539
Thomas Graf7be99412012-06-13 02:54:55 +00001540 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1541 if (!nest)
1542 return -EMSGSIZE;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001543
1544 if (data[DCB_FEATCFG_ATTR_ALL])
1545 getall = 1;
1546
1547 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1548 if (!getall && !data[i])
1549 continue;
1550
1551 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001552 if (!ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001553 ret = nla_put_u8(skb, i, value);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001554
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001555 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +00001556 nla_nest_cancel(skb, nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001557 goto nla_put_failure;
1558 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001559 }
Thomas Graf7be99412012-06-13 02:54:55 +00001560 nla_nest_end(skb, nest);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001561
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001562nla_put_failure:
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001563 return ret;
1564}
1565
Thomas Graf7be99412012-06-13 02:54:55 +00001566static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1567 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001568{
1569 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001570 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001571 u8 value;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001572
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001573 if (!netdev->dcbnl_ops->setfeatcfg)
1574 return -ENOTSUPP;
1575
1576 if (!tb[DCB_ATTR_FEATCFG])
1577 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001578
1579 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1580 dcbnl_featcfg_nest);
1581
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001582 if (ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001583 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001584
1585 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1586 if (data[i] == NULL)
1587 continue;
1588
1589 value = nla_get_u8(data[i]);
1590
1591 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1592
1593 if (ret)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001594 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001595 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001596err:
Thomas Graf7be99412012-06-13 02:54:55 +00001597 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001598
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001599 return ret;
1600}
1601
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001602/* Handle CEE DCBX GET commands. */
Thomas Graf7be99412012-06-13 02:54:55 +00001603static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1604 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001605{
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001606 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001607
1608 if (!ops)
1609 return -EOPNOTSUPP;
1610
Thomas Graf7be99412012-06-13 02:54:55 +00001611 return dcbnl_cee_fill(skb, netdev);
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001612}
1613
Thomas Graf33a03aa2012-06-13 02:54:54 +00001614struct reply_func {
1615 /* reply netlink message type */
1616 int type;
1617
1618 /* function to fill message contents */
1619 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1620 struct nlattr **, struct sk_buff *);
1621};
1622
1623static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
Thomas Graf7be99412012-06-13 02:54:55 +00001624 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1625 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1626 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1627 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1628 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1629 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1630 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1631 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1632 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1633 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1634 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1635 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1636 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1637 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1638 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1639 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1640 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1641 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1642 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1643 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1644 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1645 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1646 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1647 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1648 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1649 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1650 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
Thomas Graf33a03aa2012-06-13 02:54:54 +00001651};
1652
Alexander Duyck2f90b862008-11-20 20:52:10 -08001653static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1654{
1655 struct net *net = sock_net(skb->sk);
1656 struct net_device *netdev;
Thomas Graf7a282bc32012-06-13 02:55:01 +00001657 struct dcbmsg *dcb = nlmsg_data(nlh);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001658 struct nlattr *tb[DCB_ATTR_MAX + 1];
Eric W. Biederman15e47302012-09-07 20:12:54 +00001659 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001660 int ret = -EINVAL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001661 struct sk_buff *reply_skb;
Thomas Graf39912f92012-06-13 22:34:03 +00001662 struct nlmsghdr *reply_nlh = NULL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001663 const struct reply_func *fn;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001664
Eric W. Biedermandfc47ef2012-11-16 03:03:00 +00001665 if ((nlh->nlmsg_type == RTM_SETDCB) && !capable(CAP_NET_ADMIN))
1666 return -EPERM;
1667
Alexander Duyck2f90b862008-11-20 20:52:10 -08001668 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1669 dcbnl_rtnl_policy);
1670 if (ret < 0)
1671 return ret;
1672
Thomas Graf33a03aa2012-06-13 02:54:54 +00001673 if (dcb->cmd > DCB_CMD_MAX)
1674 return -EINVAL;
1675
1676 /* check if a reply function has been defined for the command */
1677 fn = &reply_funcs[dcb->cmd];
1678 if (!fn->cb)
1679 return -EOPNOTSUPP;
1680
Alexander Duyck2f90b862008-11-20 20:52:10 -08001681 if (!tb[DCB_ATTR_IFNAME])
1682 return -EINVAL;
1683
John Fastabend7c77ab22012-12-09 20:48:13 +00001684 netdev = dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
Alexander Duyck2f90b862008-11-20 20:52:10 -08001685 if (!netdev)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001686 return -ENODEV;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001687
Thomas Graf3d1f4862012-06-13 02:54:58 +00001688 if (!netdev->dcbnl_ops) {
1689 ret = -EOPNOTSUPP;
1690 goto out;
1691 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08001692
Eric W. Biederman15e47302012-09-07 20:12:54 +00001693 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
Thomas Graf33a03aa2012-06-13 02:54:54 +00001694 nlh->nlmsg_flags, &reply_nlh);
1695 if (!reply_skb) {
1696 ret = -ENOBUFS;
1697 goto out;
1698 }
1699
1700 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1701 if (ret < 0) {
1702 nlmsg_free(reply_skb);
1703 goto out;
1704 }
1705
1706 nlmsg_end(reply_skb, reply_nlh);
1707
John Fastabend7c77ab22012-12-09 20:48:13 +00001708 ret = rtnl_unicast(reply_skb, net, portid);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001709out:
1710 dev_put(netdev);
1711 return ret;
1712}
1713
Thomas Graf716b31a2012-06-13 02:54:59 +00001714static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1715 int ifindex, int prio)
1716{
1717 struct dcb_app_type *itr;
1718
1719 list_for_each_entry(itr, &dcb_app_list, list) {
1720 if (itr->app.selector == app->selector &&
1721 itr->app.protocol == app->protocol &&
1722 itr->ifindex == ifindex &&
1723 (!prio || itr->app.priority == prio))
1724 return itr;
1725 }
1726
1727 return NULL;
1728}
1729
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001730static int dcb_app_add(const struct dcb_app *app, int ifindex)
1731{
1732 struct dcb_app_type *entry;
1733
1734 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1735 if (!entry)
1736 return -ENOMEM;
1737
1738 memcpy(&entry->app, app, sizeof(*app));
1739 entry->ifindex = ifindex;
1740 list_add(&entry->list, &dcb_app_list);
1741
1742 return 0;
1743}
1744
John Fastabend9ab933a2010-12-30 09:26:31 +00001745/**
1746 * dcb_getapp - retrieve the DCBX application user priority
1747 *
1748 * On success returns a non-zero 802.1p user priority bitmap
1749 * otherwise returns 0 as the invalid user priority bitmap to
1750 * indicate an error.
1751 */
1752u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1753{
1754 struct dcb_app_type *itr;
1755 u8 prio = 0;
1756
1757 spin_lock(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001758 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1759 prio = itr->app.priority;
John Fastabend9ab933a2010-12-30 09:26:31 +00001760 spin_unlock(&dcb_lock);
1761
1762 return prio;
1763}
1764EXPORT_SYMBOL(dcb_getapp);
1765
1766/**
John Fastabendb6db2172011-06-21 07:34:42 +00001767 * dcb_setapp - add CEE dcb application data to app list
John Fastabend9ab933a2010-12-30 09:26:31 +00001768 *
John Fastabendb6db2172011-06-21 07:34:42 +00001769 * Priority 0 is an invalid priority in CEE spec. This routine
1770 * removes applications from the app list if the priority is
1771 * set to zero.
John Fastabend9ab933a2010-12-30 09:26:31 +00001772 */
John Fastabendab6baf92011-06-21 07:34:58 +00001773int dcb_setapp(struct net_device *dev, struct dcb_app *new)
John Fastabend9ab933a2010-12-30 09:26:31 +00001774{
1775 struct dcb_app_type *itr;
John Fastabend7ec79272011-01-31 12:00:59 +00001776 struct dcb_app_type event;
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001777 int err = 0;
John Fastabend7ec79272011-01-31 12:00:59 +00001778
Mark Rustade290ed82011-10-06 08:52:33 +00001779 event.ifindex = dev->ifindex;
John Fastabend7ec79272011-01-31 12:00:59 +00001780 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001781 if (dev->dcbnl_ops->getdcbx)
1782 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabend9ab933a2010-12-30 09:26:31 +00001783
1784 spin_lock(&dcb_lock);
1785 /* Search for existing match and replace */
Thomas Graf716b31a2012-06-13 02:54:59 +00001786 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1787 if (new->priority)
1788 itr->app.priority = new->priority;
1789 else {
1790 list_del(&itr->list);
1791 kfree(itr);
John Fastabend9ab933a2010-12-30 09:26:31 +00001792 }
Thomas Graf716b31a2012-06-13 02:54:59 +00001793 goto out;
John Fastabend9ab933a2010-12-30 09:26:31 +00001794 }
1795 /* App type does not exist add new application type */
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001796 if (new->priority)
1797 err = dcb_app_add(new, dev->ifindex);
John Fastabend9ab933a2010-12-30 09:26:31 +00001798out:
1799 spin_unlock(&dcb_lock);
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001800 if (!err)
1801 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1802 return err;
John Fastabend9ab933a2010-12-30 09:26:31 +00001803}
1804EXPORT_SYMBOL(dcb_setapp);
1805
John Fastabendb6db2172011-06-21 07:34:42 +00001806/**
John Fastabenda364c8c2011-06-21 07:34:53 +00001807 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1808 *
1809 * Helper routine which on success returns a non-zero 802.1Qaz user
1810 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1811 * not found in APP list.
1812 */
1813u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1814{
1815 struct dcb_app_type *itr;
1816 u8 prio = 0;
1817
1818 spin_lock(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001819 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1820 prio |= 1 << itr->app.priority;
John Fastabenda364c8c2011-06-21 07:34:53 +00001821 spin_unlock(&dcb_lock);
1822
1823 return prio;
1824}
1825EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1826
1827/**
John Fastabendb6db2172011-06-21 07:34:42 +00001828 * dcb_ieee_setapp - add IEEE dcb application data to app list
1829 *
1830 * This adds Application data to the list. Multiple application
1831 * entries may exists for the same selector and protocol as long
1832 * as the priorities are different.
1833 */
1834int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1835{
John Fastabendb6db2172011-06-21 07:34:42 +00001836 struct dcb_app_type event;
1837 int err = 0;
1838
Mark Rustade290ed82011-10-06 08:52:33 +00001839 event.ifindex = dev->ifindex;
John Fastabendb6db2172011-06-21 07:34:42 +00001840 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001841 if (dev->dcbnl_ops->getdcbx)
1842 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendb6db2172011-06-21 07:34:42 +00001843
1844 spin_lock(&dcb_lock);
1845 /* Search for existing match and abort if found */
Thomas Graf716b31a2012-06-13 02:54:59 +00001846 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1847 err = -EEXIST;
1848 goto out;
John Fastabendb6db2172011-06-21 07:34:42 +00001849 }
1850
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001851 err = dcb_app_add(new, dev->ifindex);
John Fastabendb6db2172011-06-21 07:34:42 +00001852out:
1853 spin_unlock(&dcb_lock);
1854 if (!err)
1855 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1856 return err;
1857}
1858EXPORT_SYMBOL(dcb_ieee_setapp);
1859
John Fastabendf9ae7e42011-06-21 07:34:48 +00001860/**
1861 * dcb_ieee_delapp - delete IEEE dcb application data from list
1862 *
1863 * This removes a matching APP data from the APP list
1864 */
1865int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1866{
1867 struct dcb_app_type *itr;
1868 struct dcb_app_type event;
1869 int err = -ENOENT;
1870
Mark Rustade290ed82011-10-06 08:52:33 +00001871 event.ifindex = dev->ifindex;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001872 memcpy(&event.app, del, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001873 if (dev->dcbnl_ops->getdcbx)
1874 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001875
1876 spin_lock(&dcb_lock);
1877 /* Search for existing match and remove it. */
Thomas Graf716b31a2012-06-13 02:54:59 +00001878 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1879 list_del(&itr->list);
1880 kfree(itr);
1881 err = 0;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001882 }
1883
John Fastabendf9ae7e42011-06-21 07:34:48 +00001884 spin_unlock(&dcb_lock);
1885 if (!err)
1886 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1887 return err;
1888}
1889EXPORT_SYMBOL(dcb_ieee_delapp);
1890
Shmulik Ravid7c14c3f2010-12-30 06:27:10 +00001891static void dcb_flushapp(void)
John Fastabend9ab933a2010-12-30 09:26:31 +00001892{
1893 struct dcb_app_type *app;
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001894 struct dcb_app_type *tmp;
John Fastabend9ab933a2010-12-30 09:26:31 +00001895
1896 spin_lock(&dcb_lock);
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001897 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
John Fastabend9ab933a2010-12-30 09:26:31 +00001898 list_del(&app->list);
1899 kfree(app);
1900 }
1901 spin_unlock(&dcb_lock);
1902}
1903
Alexander Duyck2f90b862008-11-20 20:52:10 -08001904static int __init dcbnl_init(void)
1905{
John Fastabend9ab933a2010-12-30 09:26:31 +00001906 INIT_LIST_HEAD(&dcb_app_list);
1907
Greg Rosec7ac8672011-06-10 01:27:09 +00001908 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1909 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001910
1911 return 0;
1912}
1913module_init(dcbnl_init);
1914
1915static void __exit dcbnl_exit(void)
1916{
1917 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1918 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
John Fastabend9ab933a2010-12-30 09:26:31 +00001919 dcb_flushapp();
Alexander Duyck2f90b862008-11-20 20:52:10 -08001920}
1921module_exit(dcbnl_exit);