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[mirror_ubuntu-bionic-kernel.git] / net / dcb / dcbnl.c
CommitLineData
2f90b865
AD		 1/*
2 * Copyright (c) 2008, Intel Corporation.
3 *
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>
5a0e3ad6 22#include <linux/slab.h>
2f90b865
AD		 23#include <net/netlink.h>
24#include <net/rtnetlink.h>
25#include <linux/dcbnl.h>
96b99684 26#include <net/dcbevent.h>
2f90b865
AD		 27#include <linux/rtnetlink.h>
28#include <net/sock.h>
29
30/**
31 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
32 * 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>");
7a6b6f51 53MODULE_DESCRIPTION("Data Center Bridging netlink interface");
2f90b865
AD		 54MODULE_LICENSE("GPL");
55
56/**************** DCB attribute policies *************************************/
57
58/* DCB netlink attributes policy */
b54452b0 59static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 60 [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},
2f90b865 65 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 66 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
67 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 69 [DCB_ATTR_APP] = {.type = NLA_NESTED},
3e29027a 70 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
6241b625 71 [DCB_ATTR_DCBX] = {.type = NLA_U8},
ea45fe4e 72 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
2f90b865
AD		 73};
74
75/* DCB priority flow control to User Priority nested attributes */
b54452b0 76static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
2f90b865
AD		 77 [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 */
b54452b0 89static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
2f90b865
AD		 90 [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. */
b54452b0 111static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
2f90b865
AD		 112 [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
46132188 119/* DCB capabilities nested attributes. */
b54452b0 120static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
46132188
AD		 121 [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},
6241b625 129 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
46132188 130};
2f90b865 131
33dbabc4 132/* DCB capabilities nested attributes. */
b54452b0 133static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
33dbabc4
AD		 134 [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
859ee3c4 139/* DCB BCN nested attributes. */
b54452b0 140static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
859ee3c4
AD		 141 [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},
f4314e81
DS		 150 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 152 [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
6fa382af 168/* DCB APP nested attributes. */
b54452b0 169static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
6fa382af
YZ		 170 [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
3e29027a
JF		 175/* 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},
180};
181
182static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
183 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
184};
185
ea45fe4e
SR		 186/* DCB number of traffic classes nested attributes. */
187static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
188 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
189 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
190 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
191 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
192};
193
9ab933ab
JF		 194static LIST_HEAD(dcb_app_list);
195static DEFINE_SPINLOCK(dcb_lock);
196
2f90b865
AD		 197/* standard netlink reply call */
198static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
199 u32 seq, u16 flags)
200{
201 struct sk_buff *dcbnl_skb;
202 struct dcbmsg *dcb;
203 struct nlmsghdr *nlh;
204 int ret = -EINVAL;
205
206 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
207 if (!dcbnl_skb)
208 return ret;
209
210 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
211
212 dcb = NLMSG_DATA(nlh);
213 dcb->dcb_family = AF_UNSPEC;
214 dcb->cmd = cmd;
215 dcb->dcb_pad = 0;
216
217 ret = nla_put_u8(dcbnl_skb, attr, value);
218 if (ret)
219 goto err;
220
221 /* end the message, assign the nlmsg_len. */
222 nlmsg_end(dcbnl_skb, nlh);
223 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
224 if (ret)
7eaf5077 225 return -EINVAL;
2f90b865
AD		 226
227 return 0;
228nlmsg_failure:
229err:
858eb711 230 kfree_skb(dcbnl_skb);
2f90b865
AD		 231 return ret;
232}
233
234static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
235 u32 pid, u32 seq, u16 flags)
236{
237 int ret = -EINVAL;
238
239 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
240 if (!netdev->dcbnl_ops->getstate)
241 return ret;
242
243 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
244 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
245
246 return ret;
247}
248
249static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
250 u32 pid, u32 seq, u16 flags)
251{
252 struct sk_buff *dcbnl_skb;
253 struct nlmsghdr *nlh;
254 struct dcbmsg *dcb;
255 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
256 u8 value;
257 int ret = -EINVAL;
258 int i;
259 int getall = 0;
260
261 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
262 return ret;
263
264 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
265 tb[DCB_ATTR_PFC_CFG],
266 dcbnl_pfc_up_nest);
267 if (ret)
268 goto err_out;
269
270 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
271 if (!dcbnl_skb)
272 goto err_out;
273
274 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
275
276 dcb = NLMSG_DATA(nlh);
277 dcb->dcb_family = AF_UNSPEC;
278 dcb->cmd = DCB_CMD_PFC_GCFG;
279
280 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
281 if (!nest)
282 goto err;
283
284 if (data[DCB_PFC_UP_ATTR_ALL])
285 getall = 1;
286
287 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
288 if (!getall && !data[i])
289 continue;
290
291 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
292 &value);
293 ret = nla_put_u8(dcbnl_skb, i, value);
294
295 if (ret) {
296 nla_nest_cancel(dcbnl_skb, nest);
297 goto err;
298 }
299 }
300 nla_nest_end(dcbnl_skb, nest);
301
302 nlmsg_end(dcbnl_skb, nlh);
303
304 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
305 if (ret)
7eaf5077 306 goto err_out;
2f90b865
AD		 307
308 return 0;
309nlmsg_failure:
310err:
858eb711 311 kfree_skb(dcbnl_skb);
2f90b865
AD		 312err_out:
313 return -EINVAL;
314}
315
316static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
317 u32 pid, u32 seq, u16 flags)
318{
319 struct sk_buff *dcbnl_skb;
320 struct nlmsghdr *nlh;
321 struct dcbmsg *dcb;
322 u8 perm_addr[MAX_ADDR_LEN];
323 int ret = -EINVAL;
324
325 if (!netdev->dcbnl_ops->getpermhwaddr)
326 return ret;
327
328 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
329 if (!dcbnl_skb)
330 goto err_out;
331
332 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
333
334 dcb = NLMSG_DATA(nlh);
335 dcb->dcb_family = AF_UNSPEC;
336 dcb->cmd = DCB_CMD_GPERM_HWADDR;
337
338 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
339
340 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
341 perm_addr);
342
343 nlmsg_end(dcbnl_skb, nlh);
344
345 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
346 if (ret)
7eaf5077 347 goto err_out;
2f90b865
AD		 348
349 return 0;
350
351nlmsg_failure:
858eb711 352 kfree_skb(dcbnl_skb);
2f90b865
AD		 353err_out:
354 return -EINVAL;
355}
356
46132188
AD		 357static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
358 u32 pid, u32 seq, u16 flags)
359{
360 struct sk_buff *dcbnl_skb;
361 struct nlmsghdr *nlh;
362 struct dcbmsg *dcb;
363 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
364 u8 value;
365 int ret = -EINVAL;
366 int i;
367 int getall = 0;
368
369 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
370 return ret;
371
372 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
373 dcbnl_cap_nest);
374 if (ret)
375 goto err_out;
376
377 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
378 if (!dcbnl_skb)
379 goto err_out;
380
381 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
382
383 dcb = NLMSG_DATA(nlh);
384 dcb->dcb_family = AF_UNSPEC;
385 dcb->cmd = DCB_CMD_GCAP;
386
387 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
388 if (!nest)
389 goto err;
390
391 if (data[DCB_CAP_ATTR_ALL])
392 getall = 1;
393
394 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
395 if (!getall && !data[i])
396 continue;
397
398 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
399 ret = nla_put_u8(dcbnl_skb, i, value);
400
401 if (ret) {
402 nla_nest_cancel(dcbnl_skb, nest);
403 goto err;
404 }
405 }
406 }
407 nla_nest_end(dcbnl_skb, nest);
408
409 nlmsg_end(dcbnl_skb, nlh);
410
411 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
412 if (ret)
7eaf5077 413 goto err_out;
46132188
AD		 414
415 return 0;
416nlmsg_failure:
417err:
858eb711 418 kfree_skb(dcbnl_skb);
46132188
AD		 419err_out:
420 return -EINVAL;
421}
422
33dbabc4
AD		 423static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
424 u32 pid, u32 seq, u16 flags)
425{
426 struct sk_buff *dcbnl_skb;
427 struct nlmsghdr *nlh;
428 struct dcbmsg *dcb;
429 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
430 u8 value;
431 int ret = -EINVAL;
432 int i;
433 int getall = 0;
434
435 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
436 return ret;
437
438 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
439 dcbnl_numtcs_nest);
440 if (ret) {
441 ret = -EINVAL;
442 goto err_out;
443 }
444
445 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
446 if (!dcbnl_skb) {
447 ret = -EINVAL;
448 goto err_out;
449 }
450
451 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
452
453 dcb = NLMSG_DATA(nlh);
454 dcb->dcb_family = AF_UNSPEC;
455 dcb->cmd = DCB_CMD_GNUMTCS;
456
457 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
458 if (!nest) {
459 ret = -EINVAL;
460 goto err;
461 }
462
463 if (data[DCB_NUMTCS_ATTR_ALL])
464 getall = 1;
465
466 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
467 if (!getall && !data[i])
468 continue;
469
470 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
471 if (!ret) {
472 ret = nla_put_u8(dcbnl_skb, i, value);
473
474 if (ret) {
475 nla_nest_cancel(dcbnl_skb, nest);
476 ret = -EINVAL;
477 goto err;
478 }
479 } else {
480 goto err;
481 }
482 }
483 nla_nest_end(dcbnl_skb, nest);
484
485 nlmsg_end(dcbnl_skb, nlh);
486
487 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
488 if (ret) {
489 ret = -EINVAL;
7eaf5077 490 goto err_out;
33dbabc4
AD		 491 }
492
493 return 0;
494nlmsg_failure:
495err:
858eb711 496 kfree_skb(dcbnl_skb);
33dbabc4
AD		 497err_out:
498 return ret;
499}
500
501static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
502 u32 pid, u32 seq, u16 flags)
503{
504 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
505 int ret = -EINVAL;
506 u8 value;
507 int i;
508
8b124a8e 509 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
33dbabc4
AD		 510 return ret;
511
512 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
513 dcbnl_numtcs_nest);
514
515 if (ret) {
516 ret = -EINVAL;
517 goto err;
518 }
519
520 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
521 if (data[i] == NULL)
522 continue;
523
524 value = nla_get_u8(data[i]);
525
526 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
527
528 if (ret)
529 goto operr;
530 }
531
532operr:
533 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
534 DCB_ATTR_NUMTCS, pid, seq, flags);
535
536err:
537 return ret;
538}
539
0eb3aa9b
AD		 540static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
541 u32 pid, u32 seq, u16 flags)
542{
543 int ret = -EINVAL;
544
545 if (!netdev->dcbnl_ops->getpfcstate)
546 return ret;
547
548 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
549 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
550 pid, seq, flags);
551
552 return ret;
553}
554
555static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
556 u32 pid, u32 seq, u16 flags)
557{
558 int ret = -EINVAL;
559 u8 value;
560
561 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
562 return ret;
563
564 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
565
566 netdev->dcbnl_ops->setpfcstate(netdev, value);
567
568 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
569 pid, seq, flags);
570
571 return ret;
572}
573
57949686
YZ		 574static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
575 u32 pid, u32 seq, u16 flags)
576{
577 struct sk_buff *dcbnl_skb;
578 struct nlmsghdr *nlh;
579 struct dcbmsg *dcb;
580 struct nlattr *app_nest;
581 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
582 u16 id;
583 u8 up, idtype;
584 int ret = -EINVAL;
585
586 if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->getapp)
587 goto out;
588
589 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
590 dcbnl_app_nest);
591 if (ret)
592 goto out;
593
594 ret = -EINVAL;
595 /* all must be non-null */
596 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
597 (!app_tb[DCB_APP_ATTR_ID]))
598 goto out;
599
600 /* either by eth type or by socket number */
601 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
602 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
603 (idtype != DCB_APP_IDTYPE_PORTNUM))
604 goto out;
605
606 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
607 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
608
609 /* send this back */
610 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
611 if (!dcbnl_skb)
612 goto out;
613
614 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
615 dcb = NLMSG_DATA(nlh);
616 dcb->dcb_family = AF_UNSPEC;
617 dcb->cmd = DCB_CMD_GAPP;
618
619 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
620 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
621 if (ret)
622 goto out_cancel;
623
624 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
625 if (ret)
626 goto out_cancel;
627
628 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
629 if (ret)
630 goto out_cancel;
631
632 nla_nest_end(dcbnl_skb, app_nest);
633 nlmsg_end(dcbnl_skb, nlh);
634
635 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
636 if (ret)
637 goto nlmsg_failure;
638
639 goto out;
640
641out_cancel:
642 nla_nest_cancel(dcbnl_skb, app_nest);
643nlmsg_failure:
644 kfree_skb(dcbnl_skb);
645out:
646 return ret;
647}
648
649static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
650 u32 pid, u32 seq, u16 flags)
651{
9ab933ab 652 int err, ret = -EINVAL;
57949686
YZ		 653 u16 id;
654 u8 up, idtype;
655 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
656
9ab933ab 657 if (!tb[DCB_ATTR_APP])
57949686
YZ		 658 goto out;
659
660 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
661 dcbnl_app_nest);
662 if (ret)
663 goto out;
664
665 ret = -EINVAL;
666 /* all must be non-null */
667 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
668 (!app_tb[DCB_APP_ATTR_ID]) ||
669 (!app_tb[DCB_APP_ATTR_PRIORITY]))
670 goto out;
671
672 /* either by eth type or by socket number */
673 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
674 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
675 (idtype != DCB_APP_IDTYPE_PORTNUM))
676 goto out;
677
678 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
679 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
680
9ab933ab
JF		 681 if (netdev->dcbnl_ops->setapp) {
682 err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
683 } else {
684 struct dcb_app app;
685 app.selector = idtype;
686 app.protocol = id;
687 app.priority = up;
688 err = dcb_setapp(netdev, &app);
689 }
690
691 ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
692 pid, seq, flags);
57949686
YZ		 693out:
694 return ret;
695}
696
2f90b865
AD		 697static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
698 u32 pid, u32 seq, u16 flags, int dir)
699{
700 struct sk_buff *dcbnl_skb;
701 struct nlmsghdr *nlh;
702 struct dcbmsg *dcb;
703 struct nlattr *pg_nest, *param_nest, *data;
704 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
705 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
706 u8 prio, pgid, tc_pct, up_map;
707 int ret = -EINVAL;
708 int getall = 0;
709 int i;
710
711 if (!tb[DCB_ATTR_PG_CFG] ||
712 !netdev->dcbnl_ops->getpgtccfgtx ||
713 !netdev->dcbnl_ops->getpgtccfgrx ||
714 !netdev->dcbnl_ops->getpgbwgcfgtx ||
715 !netdev->dcbnl_ops->getpgbwgcfgrx)
716 return ret;
717
718 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
719 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
720
721 if (ret)
722 goto err_out;
723
724 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
725 if (!dcbnl_skb)
726 goto err_out;
727
728 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
729
730 dcb = NLMSG_DATA(nlh);
731 dcb->dcb_family = AF_UNSPEC;
732 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
733
734 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
735 if (!pg_nest)
736 goto err;
737
738 if (pg_tb[DCB_PG_ATTR_TC_ALL])
739 getall = 1;
740
741 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
742 if (!getall && !pg_tb[i])
743 continue;
744
745 if (pg_tb[DCB_PG_ATTR_TC_ALL])
746 data = pg_tb[DCB_PG_ATTR_TC_ALL];
747 else
748 data = pg_tb[i];
749 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
750 data, dcbnl_tc_param_nest);
751 if (ret)
752 goto err_pg;
753
754 param_nest = nla_nest_start(dcbnl_skb, i);
755 if (!param_nest)
756 goto err_pg;
757
758 pgid = DCB_ATTR_VALUE_UNDEFINED;
759 prio = DCB_ATTR_VALUE_UNDEFINED;
760 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
761 up_map = DCB_ATTR_VALUE_UNDEFINED;
762
763 if (dir) {
764 /* Rx */
765 netdev->dcbnl_ops->getpgtccfgrx(netdev,
766 i - DCB_PG_ATTR_TC_0, &prio,
767 &pgid, &tc_pct, &up_map);
768 } else {
769 /* Tx */
770 netdev->dcbnl_ops->getpgtccfgtx(netdev,
771 i - DCB_PG_ATTR_TC_0, &prio,
772 &pgid, &tc_pct, &up_map);
773 }
774
775 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
776 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
777 ret = nla_put_u8(dcbnl_skb,
778 DCB_TC_ATTR_PARAM_PGID, pgid);
779 if (ret)
780 goto err_param;
781 }
782 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
783 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
784 ret = nla_put_u8(dcbnl_skb,
785 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
786 if (ret)
787 goto err_param;
788 }
789 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
790 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
791 ret = nla_put_u8(dcbnl_skb,
792 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
793 if (ret)
794 goto err_param;
795 }
796 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
797 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
798 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
799 tc_pct);
800 if (ret)
801 goto err_param;
802 }
803 nla_nest_end(dcbnl_skb, param_nest);
804 }
805
806 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
807 getall = 1;
808 else
809 getall = 0;
810
811 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
812 if (!getall && !pg_tb[i])
813 continue;
814
815 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
816
817 if (dir) {
818 /* Rx */
819 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
820 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
821 } else {
822 /* Tx */
823 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
824 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
825 }
826 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
827
828 if (ret)
829 goto err_pg;
830 }
831
832 nla_nest_end(dcbnl_skb, pg_nest);
833
834 nlmsg_end(dcbnl_skb, nlh);
835
836 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
837 if (ret)
7eaf5077 838 goto err_out;
2f90b865
AD		 839
840 return 0;
841
842err_param:
843 nla_nest_cancel(dcbnl_skb, param_nest);
844err_pg:
845 nla_nest_cancel(dcbnl_skb, pg_nest);
846nlmsg_failure:
847err:
858eb711 848 kfree_skb(dcbnl_skb);
2f90b865
AD		 849err_out:
850 ret = -EINVAL;
851 return ret;
852}
853
854static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
855 u32 pid, u32 seq, u16 flags)
856{
857 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
858}
859
860static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
861 u32 pid, u32 seq, u16 flags)
862{
863 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
864}
865
866static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
867 u32 pid, u32 seq, u16 flags)
868{
869 int ret = -EINVAL;
870 u8 value;
871
872 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
873 return ret;
874
875 value = nla_get_u8(tb[DCB_ATTR_STATE]);
876
1486a61e
DS		 877 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
878 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
2f90b865
AD		 879 pid, seq, flags);
880
881 return ret;
882}
883
884static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
885 u32 pid, u32 seq, u16 flags)
886{
887 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
888 int i;
889 int ret = -EINVAL;
890 u8 value;
891
892 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
893 return ret;
894
895 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
896 tb[DCB_ATTR_PFC_CFG],
897 dcbnl_pfc_up_nest);
898 if (ret)
899 goto err;
900
901 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
902 if (data[i] == NULL)
903 continue;
904 value = nla_get_u8(data[i]);
905 netdev->dcbnl_ops->setpfccfg(netdev,
906 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
907 }
908
909 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
910 pid, seq, flags);
911err:
912 return ret;
913}
914
915static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
916 u32 pid, u32 seq, u16 flags)
917{
918 int ret = -EINVAL;
919
920 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
921 return ret;
922
923 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
924 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
925
926 return ret;
927}
928
929static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
930 u32 pid, u32 seq, u16 flags, int dir)
931{
932 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
933 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
934 int ret = -EINVAL;
935 int i;
936 u8 pgid;
937 u8 up_map;
938 u8 prio;
939 u8 tc_pct;
940
941 if (!tb[DCB_ATTR_PG_CFG] ||
942 !netdev->dcbnl_ops->setpgtccfgtx ||
943 !netdev->dcbnl_ops->setpgtccfgrx ||
944 !netdev->dcbnl_ops->setpgbwgcfgtx ||
945 !netdev->dcbnl_ops->setpgbwgcfgrx)
946 return ret;
947
948 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
949 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
950 if (ret)
951 goto err;
952
953 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
954 if (!pg_tb[i])
955 continue;
956
957 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
958 pg_tb[i], dcbnl_tc_param_nest);
959 if (ret)
960 goto err;
961
962 pgid = DCB_ATTR_VALUE_UNDEFINED;
963 prio = DCB_ATTR_VALUE_UNDEFINED;
964 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
965 up_map = DCB_ATTR_VALUE_UNDEFINED;
966
967 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
968 prio =
969 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
970
971 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
972 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
973
974 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
975 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
976
977 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
978 up_map =
979 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
980
981 /* dir: Tx = 0, Rx = 1 */
982 if (dir) {
983 /* Rx */
984 netdev->dcbnl_ops->setpgtccfgrx(netdev,
985 i - DCB_PG_ATTR_TC_0,
986 prio, pgid, tc_pct, up_map);
987 } else {
988 /* Tx */
989 netdev->dcbnl_ops->setpgtccfgtx(netdev,
990 i - DCB_PG_ATTR_TC_0,
991 prio, pgid, tc_pct, up_map);
992 }
993 }
994
995 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
996 if (!pg_tb[i])
997 continue;
998
999 tc_pct = nla_get_u8(pg_tb[i]);
1000
1001 /* dir: Tx = 0, Rx = 1 */
1002 if (dir) {
1003 /* Rx */
1004 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
1005 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1006 } else {
1007 /* Tx */
1008 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
1009 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1010 }
1011 }
1012
1013 ret = dcbnl_reply(0, RTM_SETDCB,
1014 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
1015 DCB_ATTR_PG_CFG, pid, seq, flags);
1016
1017err:
1018 return ret;
1019}
1020
1021static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
1022 u32 pid, u32 seq, u16 flags)
1023{
1024 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
1025}
1026
1027static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
1028 u32 pid, u32 seq, u16 flags)
1029{
1030 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
1031}
1032
859ee3c4
AD		 1033static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
1034 u32 pid, u32 seq, u16 flags)
1035{
1036 struct sk_buff *dcbnl_skb;
1037 struct nlmsghdr *nlh;
1038 struct dcbmsg *dcb;
1039 struct nlattr *bcn_nest;
1040 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1041 u8 value_byte;
1042 u32 value_integer;
1043 int ret = -EINVAL;
1044 bool getall = false;
1045 int i;
1046
1047 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1048 !netdev->dcbnl_ops->getbcncfg)
1049 return ret;
1050
1051 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1052 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1053
1054 if (ret)
1055 goto err_out;
1056
1057 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1058 if (!dcbnl_skb)
1059 goto err_out;
1060
1061 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1062
1063 dcb = NLMSG_DATA(nlh);
1064 dcb->dcb_family = AF_UNSPEC;
1065 dcb->cmd = DCB_CMD_BCN_GCFG;
1066
1067 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1068 if (!bcn_nest)
1069 goto err;
1070
1071 if (bcn_tb[DCB_BCN_ATTR_ALL])
1072 getall = true;
1073
1074 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1075 if (!getall && !bcn_tb[i])
1076 continue;
1077
1078 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1079 &value_byte);
1080 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1081 if (ret)
1082 goto err_bcn;
1083 }
1084
f4314e81 1085 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1086 if (!getall && !bcn_tb[i])
1087 continue;
1088
1089 netdev->dcbnl_ops->getbcncfg(netdev, i,
1090 &value_integer);
1091 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1092 if (ret)
1093 goto err_bcn;
1094 }
1095
1096 nla_nest_end(dcbnl_skb, bcn_nest);
1097
1098 nlmsg_end(dcbnl_skb, nlh);
1099
1100 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1101 if (ret)
7eaf5077 1102 goto err_out;
859ee3c4
AD		 1103
1104 return 0;
1105
1106err_bcn:
1107 nla_nest_cancel(dcbnl_skb, bcn_nest);
1108nlmsg_failure:
1109err:
858eb711 1110 kfree_skb(dcbnl_skb);
859ee3c4
AD		 1111err_out:
1112 ret = -EINVAL;
1113 return ret;
1114}
1115
1116static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1117 u32 pid, u32 seq, u16 flags)
1118{
1119 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1120 int i;
1121 int ret = -EINVAL;
1122 u8 value_byte;
1123 u32 value_int;
1124
f64f9e71
JP		 1125 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1126 !netdev->dcbnl_ops->setbcnrp)
859ee3c4
AD		 1127 return ret;
1128
1129 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1130 tb[DCB_ATTR_BCN],
1131 dcbnl_pfc_up_nest);
1132 if (ret)
1133 goto err;
1134
1135 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1136 if (data[i] == NULL)
1137 continue;
1138 value_byte = nla_get_u8(data[i]);
1139 netdev->dcbnl_ops->setbcnrp(netdev,
1140 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1141 }
1142
f4314e81 1143 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1144 if (data[i] == NULL)
1145 continue;
1146 value_int = nla_get_u32(data[i]);
1147 netdev->dcbnl_ops->setbcncfg(netdev,
1148 i, value_int);
1149 }
1150
1151 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1152 pid, seq, flags);
1153err:
1154 return ret;
1155}
1156
3e29027a
JF		 1157/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1158 * be completed the entire msg is aborted and error value is returned.
1159 * No attempt is made to reconcile the case where only part of the
1160 * cmd can be completed.
1161 */
1162static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1163 u32 pid, u32 seq, u16 flags)
1164{
1165 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1166 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1167 int err = -EOPNOTSUPP;
1168
1169 if (!ops)
1170 goto err;
1171
1172 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1173 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1174 if (err)
1175 goto err;
1176
1177 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1178 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1179 err = ops->ieee_setets(netdev, ets);
1180 if (err)
1181 goto err;
1182 }
1183
1184 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setets) {
1185 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1186 err = ops->ieee_setpfc(netdev, pfc);
1187 if (err)
1188 goto err;
1189 }
1190
9ab933ab 1191 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
3e29027a
JF		 1192 struct nlattr *attr;
1193 int rem;
1194
1195 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1196 struct dcb_app *app_data;
1197 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1198 continue;
1199 app_data = nla_data(attr);
9ab933ab
JF		 1200 if (ops->ieee_setapp)
1201 err = ops->ieee_setapp(netdev, app_data);
1202 else
1203 err = dcb_setapp(netdev, app_data);
3e29027a
JF		 1204 if (err)
1205 goto err;
1206 }
1207 }
1208
1209err:
1210 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1211 pid, seq, flags);
1212 return err;
1213}
1214
1215
1216/* Handle IEEE 802.1Qaz GET commands. */
1217static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1218 u32 pid, u32 seq, u16 flags)
1219{
1220 struct sk_buff *skb;
1221 struct nlmsghdr *nlh;
1222 struct dcbmsg *dcb;
9ab933ab
JF		 1223 struct nlattr *ieee, *app;
1224 struct dcb_app_type *itr;
3e29027a
JF		 1225 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1226 int err;
1227
1228 if (!ops)
1229 return -EOPNOTSUPP;
1230
1231 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1232 if (!skb)
1233 return -ENOBUFS;
1234
1235 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1236
1237 dcb = NLMSG_DATA(nlh);
1238 dcb->dcb_family = AF_UNSPEC;
1239 dcb->cmd = DCB_CMD_IEEE_GET;
1240
1241 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1242
1243 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1244 if (!ieee)
1245 goto nla_put_failure;
1246
1247 if (ops->ieee_getets) {
1248 struct ieee_ets ets;
1249 err = ops->ieee_getets(netdev, &ets);
1250 if (!err)
1251 NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
1252 }
1253
1254 if (ops->ieee_getpfc) {
1255 struct ieee_pfc pfc;
1256 err = ops->ieee_getpfc(netdev, &pfc);
1257 if (!err)
1258 NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
1259 }
1260
9ab933ab
JF		 1261 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1262 if (!app)
1263 goto nla_put_failure;
1264
1265 spin_lock(&dcb_lock);
1266 list_for_each_entry(itr, &dcb_app_list, list) {
1267 if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0)
1268 NLA_PUT(skb, DCB_ATTR_IEEE_APP,
1269 sizeof(itr->app), &itr->app);
1270 }
1271 spin_unlock(&dcb_lock);
1272 nla_nest_end(skb, app);
1273
3e29027a
JF		 1274 nla_nest_end(skb, ieee);
1275 nlmsg_end(skb, nlh);
1276
1277 return rtnl_unicast(skb, &init_net, pid);
1278nla_put_failure:
1279 nlmsg_cancel(skb, nlh);
1280nlmsg_failure:
1281 kfree_skb(skb);
1282 return -1;
1283}
1284
6241b625
SR		 1285/* DCBX configuration */
1286static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1287 u32 pid, u32 seq, u16 flags)
1288{
7f891cf1 1289 int ret;
6241b625
SR		 1290
1291 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1292 return -EOPNOTSUPP;
6241b625
SR		 1293
1294 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1295 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1296
1297 return ret;
1298}
1299
1300static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1301 u32 pid, u32 seq, u16 flags)
1302{
7f891cf1 1303 int ret;
6241b625
SR		 1304 u8 value;
1305
7f891cf1
SR		 1306 if (!netdev->dcbnl_ops->setdcbx)
1307 return -EOPNOTSUPP;
1308
1309 if (!tb[DCB_ATTR_DCBX])
1310 return -EINVAL;
6241b625
SR		 1311
1312 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1313
1314 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1315 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1316 pid, seq, flags);
1317
1318 return ret;
1319}
1320
ea45fe4e
SR		 1321static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1322 u32 pid, u32 seq, u16 flags)
1323{
1324 struct sk_buff *dcbnl_skb;
1325 struct nlmsghdr *nlh;
1326 struct dcbmsg *dcb;
1327 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1328 u8 value;
7f891cf1 1329 int ret, i;
ea45fe4e
SR		 1330 int getall = 0;
1331
7f891cf1
SR		 1332 if (!netdev->dcbnl_ops->getfeatcfg)
1333 return -EOPNOTSUPP;
1334
1335 if (!tb[DCB_ATTR_FEATCFG])
1336 return -EINVAL;
ea45fe4e
SR		 1337
1338 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1339 dcbnl_featcfg_nest);
7f891cf1 1340 if (ret)
ea45fe4e 1341 goto err_out;
ea45fe4e
SR		 1342
1343 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1344 if (!dcbnl_skb) {
7f891cf1 1345 ret = -ENOBUFS;
ea45fe4e
SR		 1346 goto err_out;
1347 }
1348
1349 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1350
1351 dcb = NLMSG_DATA(nlh);
1352 dcb->dcb_family = AF_UNSPEC;
1353 dcb->cmd = DCB_CMD_GFEATCFG;
1354
1355 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1356 if (!nest) {
7f891cf1
SR		 1357 ret = -EMSGSIZE;
1358 goto nla_put_failure;
ea45fe4e
SR		 1359 }
1360
1361 if (data[DCB_FEATCFG_ATTR_ALL])
1362 getall = 1;
1363
1364 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1365 if (!getall && !data[i])
1366 continue;
1367
1368 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1369 if (!ret)
ea45fe4e
SR		 1370 ret = nla_put_u8(dcbnl_skb, i, value);
1371
7f891cf1
SR		 1372 if (ret) {
1373 nla_nest_cancel(dcbnl_skb, nest);
1374 goto nla_put_failure;
1375 }
ea45fe4e
SR		 1376 }
1377 nla_nest_end(dcbnl_skb, nest);
1378
1379 nlmsg_end(dcbnl_skb, nlh);
1380
7f891cf1
SR		 1381 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1382nla_put_failure:
1383 nlmsg_cancel(dcbnl_skb, nlh);
ea45fe4e 1384nlmsg_failure:
ea45fe4e
SR		 1385 kfree_skb(dcbnl_skb);
1386err_out:
1387 return ret;
1388}
1389
1390static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1391 u32 pid, u32 seq, u16 flags)
1392{
1393 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1394 int ret, i;
ea45fe4e 1395 u8 value;
ea45fe4e 1396
7f891cf1
SR		 1397 if (!netdev->dcbnl_ops->setfeatcfg)
1398 return -ENOTSUPP;
1399
1400 if (!tb[DCB_ATTR_FEATCFG])
1401 return -EINVAL;
ea45fe4e
SR		 1402
1403 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1404 dcbnl_featcfg_nest);
1405
7f891cf1 1406 if (ret)
ea45fe4e 1407 goto err;
ea45fe4e
SR		 1408
1409 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1410 if (data[i] == NULL)
1411 continue;
1412
1413 value = nla_get_u8(data[i]);
1414
1415 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1416
1417 if (ret)
7f891cf1 1418 goto err;
ea45fe4e 1419 }
ea45fe4e 1420err:
7f891cf1
SR		 1421 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1422 pid, seq, flags);
1423
ea45fe4e
SR		 1424 return ret;
1425}
1426
2f90b865
AD		 1427static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1428{
1429 struct net *net = sock_net(skb->sk);
1430 struct net_device *netdev;
1431 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1432 struct nlattr *tb[DCB_ATTR_MAX + 1];
1433 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1434 int ret = -EINVAL;
1435
09ad9bc7 1436 if (!net_eq(net, &init_net))
2f90b865
AD		 1437 return -EINVAL;
1438
1439 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1440 dcbnl_rtnl_policy);
1441 if (ret < 0)
1442 return ret;
1443
1444 if (!tb[DCB_ATTR_IFNAME])
1445 return -EINVAL;
1446
1447 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1448 if (!netdev)
1449 return -EINVAL;
1450
1451 if (!netdev->dcbnl_ops)
1452 goto errout;
1453
1454 switch (dcb->cmd) {
1455 case DCB_CMD_GSTATE:
1456 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1457 nlh->nlmsg_flags);
1458 goto out;
1459 case DCB_CMD_PFC_GCFG:
1460 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1461 nlh->nlmsg_flags);
1462 goto out;
1463 case DCB_CMD_GPERM_HWADDR:
1464 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1465 nlh->nlmsg_flags);
1466 goto out;
1467 case DCB_CMD_PGTX_GCFG:
1468 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1469 nlh->nlmsg_flags);
1470 goto out;
1471 case DCB_CMD_PGRX_GCFG:
1472 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1473 nlh->nlmsg_flags);
1474 goto out;
859ee3c4
AD		 1475 case DCB_CMD_BCN_GCFG:
1476 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1477 nlh->nlmsg_flags);
1478 goto out;
2f90b865
AD		 1479 case DCB_CMD_SSTATE:
1480 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1481 nlh->nlmsg_flags);
1482 goto out;
1483 case DCB_CMD_PFC_SCFG:
1484 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1485 nlh->nlmsg_flags);
1486 goto out;
1487
1488 case DCB_CMD_SET_ALL:
1489 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1490 nlh->nlmsg_flags);
1491 goto out;
1492 case DCB_CMD_PGTX_SCFG:
1493 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1494 nlh->nlmsg_flags);
1495 goto out;
1496 case DCB_CMD_PGRX_SCFG:
1497 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1498 nlh->nlmsg_flags);
1499 goto out;
46132188
AD		 1500 case DCB_CMD_GCAP:
1501 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1502 nlh->nlmsg_flags);
1503 goto out;
33dbabc4
AD		 1504 case DCB_CMD_GNUMTCS:
1505 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1506 nlh->nlmsg_flags);
1507 goto out;
1508 case DCB_CMD_SNUMTCS:
1509 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1510 nlh->nlmsg_flags);
1511 goto out;
0eb3aa9b
AD		 1512 case DCB_CMD_PFC_GSTATE:
1513 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1514 nlh->nlmsg_flags);
1515 goto out;
1516 case DCB_CMD_PFC_SSTATE:
1517 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1518 nlh->nlmsg_flags);
1519 goto out;
859ee3c4
AD		 1520 case DCB_CMD_BCN_SCFG:
1521 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1522 nlh->nlmsg_flags);
1523 goto out;
57949686
YZ		 1524 case DCB_CMD_GAPP:
1525 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1526 nlh->nlmsg_flags);
1527 goto out;
1528 case DCB_CMD_SAPP:
1529 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1530 nlh->nlmsg_flags);
1531 goto out;
3e29027a
JF		 1532 case DCB_CMD_IEEE_SET:
1533 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
1534 nlh->nlmsg_flags);
1535 goto out;
1536 case DCB_CMD_IEEE_GET:
1537 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
1538 nlh->nlmsg_flags);
1539 goto out;
6241b625
SR		 1540 case DCB_CMD_GDCBX:
1541 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1542 nlh->nlmsg_flags);
1543 goto out;
1544 case DCB_CMD_SDCBX:
1545 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1546 nlh->nlmsg_flags);
1547 goto out;
ea45fe4e
SR		 1548 case DCB_CMD_GFEATCFG:
1549 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1550 nlh->nlmsg_flags);
1551 goto out;
1552 case DCB_CMD_SFEATCFG:
1553 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1554 nlh->nlmsg_flags);
1555 goto out;
2f90b865
AD		 1556 default:
1557 goto errout;
1558 }
1559errout:
1560 ret = -EINVAL;
1561out:
1562 dev_put(netdev);
1563 return ret;
1564}
1565
9ab933ab
JF		 1566/**
1567 * dcb_getapp - retrieve the DCBX application user priority
1568 *
1569 * On success returns a non-zero 802.1p user priority bitmap
1570 * otherwise returns 0 as the invalid user priority bitmap to
1571 * indicate an error.
1572 */
1573u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1574{
1575 struct dcb_app_type *itr;
1576 u8 prio = 0;
1577
1578 spin_lock(&dcb_lock);
1579 list_for_each_entry(itr, &dcb_app_list, list) {
1580 if (itr->app.selector == app->selector &&
1581 itr->app.protocol == app->protocol &&
1582 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1583 prio = itr->app.priority;
1584 break;
1585 }
1586 }
1587 spin_unlock(&dcb_lock);
1588
1589 return prio;
1590}
1591EXPORT_SYMBOL(dcb_getapp);
1592
1593/**
1594 * ixgbe_dcbnl_setapp - add dcb application data to app list
1595 *
1596 * Priority 0 is the default priority this removes applications
1597 * from the app list if the priority is set to zero.
1598 */
1599u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
1600{
1601 struct dcb_app_type *itr;
1602
1603 spin_lock(&dcb_lock);
1604 /* Search for existing match and replace */
1605 list_for_each_entry(itr, &dcb_app_list, list) {
1606 if (itr->app.selector == new->selector &&
1607 itr->app.protocol == new->protocol &&
1608 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1609 if (new->priority)
1610 itr->app.priority = new->priority;
1611 else {
1612 list_del(&itr->list);
1613 kfree(itr);
1614 }
1615 goto out;
1616 }
1617 }
1618 /* App type does not exist add new application type */
1619 if (new->priority) {
1620 struct dcb_app_type *entry;
1621 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1622 if (!entry) {
1623 spin_unlock(&dcb_lock);
1624 return -ENOMEM;
1625 }
1626
1627 memcpy(&entry->app, new, sizeof(*new));
1628 strncpy(entry->name, dev->name, IFNAMSIZ);
1629 list_add(&entry->list, &dcb_app_list);
1630 }
1631out:
1632 spin_unlock(&dcb_lock);
96b99684 1633 call_dcbevent_notifiers(DCB_APP_EVENT, new);
9ab933ab
JF		 1634 return 0;
1635}
1636EXPORT_SYMBOL(dcb_setapp);
1637
7c14c3f1 1638static void dcb_flushapp(void)
9ab933ab
JF		 1639{
1640 struct dcb_app_type *app;
1641
1642 spin_lock(&dcb_lock);
1643 list_for_each_entry(app, &dcb_app_list, list) {
1644 list_del(&app->list);
1645 kfree(app);
1646 }
1647 spin_unlock(&dcb_lock);
1648}
1649
2f90b865
AD		 1650static int __init dcbnl_init(void)
1651{
9ab933ab
JF		 1652 INIT_LIST_HEAD(&dcb_app_list);
1653
2f90b865
AD		 1654 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
1655 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
1656
1657 return 0;
1658}
1659module_init(dcbnl_init);
1660
1661static void __exit dcbnl_exit(void)
1662{
1663 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1664 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
9ab933ab 1665 dcb_flushapp();
2f90b865
AD		 1666}
1667module_exit(dcbnl_exit);
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