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igb: Change version to remove number after -k in kernel versions.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / dcb / dcbnl.c
CommitLineData
2f90b865 1/*
698e1d23 2 * Copyright (c) 2008-2011, Intel Corporation.
2f90b865
AD		 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
3dce38a0 586 if (!tb[DCB_ATTR_APP])
57949686
YZ		 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]);
3dce38a0
JF		 607
608 if (netdev->dcbnl_ops->getapp) {
609 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
610 } else {
611 struct dcb_app app = {
612 .selector = idtype,
613 .protocol = id,
614 };
615 up = dcb_getapp(netdev, &app);
616 }
57949686
YZ		 617
618 /* send this back */
619 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
620 if (!dcbnl_skb)
621 goto out;
622
623 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
624 dcb = NLMSG_DATA(nlh);
625 dcb->dcb_family = AF_UNSPEC;
626 dcb->cmd = DCB_CMD_GAPP;
627
628 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
d3337de5
JJ		 629 if (!app_nest)
630 goto out_cancel;
631
57949686
YZ		 632 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
633 if (ret)
634 goto out_cancel;
635
636 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
637 if (ret)
638 goto out_cancel;
639
640 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
641 if (ret)
642 goto out_cancel;
643
644 nla_nest_end(dcbnl_skb, app_nest);
645 nlmsg_end(dcbnl_skb, nlh);
646
647 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
648 if (ret)
649 goto nlmsg_failure;
650
651 goto out;
652
653out_cancel:
654 nla_nest_cancel(dcbnl_skb, app_nest);
655nlmsg_failure:
656 kfree_skb(dcbnl_skb);
657out:
658 return ret;
659}
660
661static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
662 u32 pid, u32 seq, u16 flags)
663{
9ab933ab 664 int err, ret = -EINVAL;
57949686
YZ		 665 u16 id;
666 u8 up, idtype;
667 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
668
9ab933ab 669 if (!tb[DCB_ATTR_APP])
57949686
YZ		 670 goto out;
671
672 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
673 dcbnl_app_nest);
674 if (ret)
675 goto out;
676
677 ret = -EINVAL;
678 /* all must be non-null */
679 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
680 (!app_tb[DCB_APP_ATTR_ID]) ||
681 (!app_tb[DCB_APP_ATTR_PRIORITY]))
682 goto out;
683
684 /* either by eth type or by socket number */
685 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
686 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
687 (idtype != DCB_APP_IDTYPE_PORTNUM))
688 goto out;
689
690 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
691 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
692
9ab933ab
JF		 693 if (netdev->dcbnl_ops->setapp) {
694 err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
695 } else {
696 struct dcb_app app;
697 app.selector = idtype;
698 app.protocol = id;
699 app.priority = up;
700 err = dcb_setapp(netdev, &app);
701 }
702
703 ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
704 pid, seq, flags);
57949686
YZ		 705out:
706 return ret;
707}
708
2f90b865
AD		 709static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
710 u32 pid, u32 seq, u16 flags, int dir)
711{
712 struct sk_buff *dcbnl_skb;
713 struct nlmsghdr *nlh;
714 struct dcbmsg *dcb;
715 struct nlattr *pg_nest, *param_nest, *data;
716 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
717 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
718 u8 prio, pgid, tc_pct, up_map;
719 int ret = -EINVAL;
720 int getall = 0;
721 int i;
722
723 if (!tb[DCB_ATTR_PG_CFG] ||
724 !netdev->dcbnl_ops->getpgtccfgtx ||
725 !netdev->dcbnl_ops->getpgtccfgrx ||
726 !netdev->dcbnl_ops->getpgbwgcfgtx ||
727 !netdev->dcbnl_ops->getpgbwgcfgrx)
728 return ret;
729
730 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
731 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
732
733 if (ret)
734 goto err_out;
735
736 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
737 if (!dcbnl_skb)
738 goto err_out;
739
740 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
741
742 dcb = NLMSG_DATA(nlh);
743 dcb->dcb_family = AF_UNSPEC;
744 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
745
746 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
747 if (!pg_nest)
748 goto err;
749
750 if (pg_tb[DCB_PG_ATTR_TC_ALL])
751 getall = 1;
752
753 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
754 if (!getall && !pg_tb[i])
755 continue;
756
757 if (pg_tb[DCB_PG_ATTR_TC_ALL])
758 data = pg_tb[DCB_PG_ATTR_TC_ALL];
759 else
760 data = pg_tb[i];
761 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
762 data, dcbnl_tc_param_nest);
763 if (ret)
764 goto err_pg;
765
766 param_nest = nla_nest_start(dcbnl_skb, i);
767 if (!param_nest)
768 goto err_pg;
769
770 pgid = DCB_ATTR_VALUE_UNDEFINED;
771 prio = DCB_ATTR_VALUE_UNDEFINED;
772 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
773 up_map = DCB_ATTR_VALUE_UNDEFINED;
774
775 if (dir) {
776 /* Rx */
777 netdev->dcbnl_ops->getpgtccfgrx(netdev,
778 i - DCB_PG_ATTR_TC_0, &prio,
779 &pgid, &tc_pct, &up_map);
780 } else {
781 /* Tx */
782 netdev->dcbnl_ops->getpgtccfgtx(netdev,
783 i - DCB_PG_ATTR_TC_0, &prio,
784 &pgid, &tc_pct, &up_map);
785 }
786
787 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
788 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
789 ret = nla_put_u8(dcbnl_skb,
790 DCB_TC_ATTR_PARAM_PGID, pgid);
791 if (ret)
792 goto err_param;
793 }
794 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
795 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
796 ret = nla_put_u8(dcbnl_skb,
797 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
798 if (ret)
799 goto err_param;
800 }
801 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
802 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
803 ret = nla_put_u8(dcbnl_skb,
804 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
805 if (ret)
806 goto err_param;
807 }
808 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
809 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
810 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
811 tc_pct);
812 if (ret)
813 goto err_param;
814 }
815 nla_nest_end(dcbnl_skb, param_nest);
816 }
817
818 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
819 getall = 1;
820 else
821 getall = 0;
822
823 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
824 if (!getall && !pg_tb[i])
825 continue;
826
827 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
828
829 if (dir) {
830 /* Rx */
831 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
832 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
833 } else {
834 /* Tx */
835 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
836 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
837 }
838 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
839
840 if (ret)
841 goto err_pg;
842 }
843
844 nla_nest_end(dcbnl_skb, pg_nest);
845
846 nlmsg_end(dcbnl_skb, nlh);
847
848 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
849 if (ret)
7eaf5077 850 goto err_out;
2f90b865
AD		 851
852 return 0;
853
854err_param:
855 nla_nest_cancel(dcbnl_skb, param_nest);
856err_pg:
857 nla_nest_cancel(dcbnl_skb, pg_nest);
858nlmsg_failure:
859err:
858eb711 860 kfree_skb(dcbnl_skb);
2f90b865
AD		 861err_out:
862 ret = -EINVAL;
863 return ret;
864}
865
866static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
867 u32 pid, u32 seq, u16 flags)
868{
869 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
870}
871
872static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
873 u32 pid, u32 seq, u16 flags)
874{
875 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
876}
877
878static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
879 u32 pid, u32 seq, u16 flags)
880{
881 int ret = -EINVAL;
882 u8 value;
883
884 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
885 return ret;
886
887 value = nla_get_u8(tb[DCB_ATTR_STATE]);
888
1486a61e
DS		 889 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
890 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
2f90b865
AD		 891 pid, seq, flags);
892
893 return ret;
894}
895
896static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
897 u32 pid, u32 seq, u16 flags)
898{
899 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
900 int i;
901 int ret = -EINVAL;
902 u8 value;
903
904 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
905 return ret;
906
907 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
908 tb[DCB_ATTR_PFC_CFG],
909 dcbnl_pfc_up_nest);
910 if (ret)
911 goto err;
912
913 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
914 if (data[i] == NULL)
915 continue;
916 value = nla_get_u8(data[i]);
917 netdev->dcbnl_ops->setpfccfg(netdev,
918 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
919 }
920
921 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
922 pid, seq, flags);
923err:
924 return ret;
925}
926
927static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
928 u32 pid, u32 seq, u16 flags)
929{
930 int ret = -EINVAL;
931
932 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
933 return ret;
934
935 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
936 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
937
938 return ret;
939}
940
941static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
942 u32 pid, u32 seq, u16 flags, int dir)
943{
944 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
945 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
946 int ret = -EINVAL;
947 int i;
948 u8 pgid;
949 u8 up_map;
950 u8 prio;
951 u8 tc_pct;
952
953 if (!tb[DCB_ATTR_PG_CFG] ||
954 !netdev->dcbnl_ops->setpgtccfgtx ||
955 !netdev->dcbnl_ops->setpgtccfgrx ||
956 !netdev->dcbnl_ops->setpgbwgcfgtx ||
957 !netdev->dcbnl_ops->setpgbwgcfgrx)
958 return ret;
959
960 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
961 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
962 if (ret)
963 goto err;
964
965 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
966 if (!pg_tb[i])
967 continue;
968
969 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
970 pg_tb[i], dcbnl_tc_param_nest);
971 if (ret)
972 goto err;
973
974 pgid = DCB_ATTR_VALUE_UNDEFINED;
975 prio = DCB_ATTR_VALUE_UNDEFINED;
976 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
977 up_map = DCB_ATTR_VALUE_UNDEFINED;
978
979 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
980 prio =
981 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
982
983 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
984 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
985
986 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
987 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
988
989 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
990 up_map =
991 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
992
993 /* dir: Tx = 0, Rx = 1 */
994 if (dir) {
995 /* Rx */
996 netdev->dcbnl_ops->setpgtccfgrx(netdev,
997 i - DCB_PG_ATTR_TC_0,
998 prio, pgid, tc_pct, up_map);
999 } else {
1000 /* Tx */
1001 netdev->dcbnl_ops->setpgtccfgtx(netdev,
1002 i - DCB_PG_ATTR_TC_0,
1003 prio, pgid, tc_pct, up_map);
1004 }
1005 }
1006
1007 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1008 if (!pg_tb[i])
1009 continue;
1010
1011 tc_pct = nla_get_u8(pg_tb[i]);
1012
1013 /* dir: Tx = 0, Rx = 1 */
1014 if (dir) {
1015 /* Rx */
1016 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
1017 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1018 } else {
1019 /* Tx */
1020 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
1021 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1022 }
1023 }
1024
1025 ret = dcbnl_reply(0, RTM_SETDCB,
1026 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
1027 DCB_ATTR_PG_CFG, pid, seq, flags);
1028
1029err:
1030 return ret;
1031}
1032
1033static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
1034 u32 pid, u32 seq, u16 flags)
1035{
1036 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
1037}
1038
1039static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
1040 u32 pid, u32 seq, u16 flags)
1041{
1042 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
1043}
1044
859ee3c4
AD		 1045static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
1046 u32 pid, u32 seq, u16 flags)
1047{
1048 struct sk_buff *dcbnl_skb;
1049 struct nlmsghdr *nlh;
1050 struct dcbmsg *dcb;
1051 struct nlattr *bcn_nest;
1052 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1053 u8 value_byte;
1054 u32 value_integer;
1055 int ret = -EINVAL;
1056 bool getall = false;
1057 int i;
1058
1059 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1060 !netdev->dcbnl_ops->getbcncfg)
1061 return ret;
1062
1063 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1064 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1065
1066 if (ret)
1067 goto err_out;
1068
1069 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1070 if (!dcbnl_skb)
1071 goto err_out;
1072
1073 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1074
1075 dcb = NLMSG_DATA(nlh);
1076 dcb->dcb_family = AF_UNSPEC;
1077 dcb->cmd = DCB_CMD_BCN_GCFG;
1078
1079 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1080 if (!bcn_nest)
1081 goto err;
1082
1083 if (bcn_tb[DCB_BCN_ATTR_ALL])
1084 getall = true;
1085
1086 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1087 if (!getall && !bcn_tb[i])
1088 continue;
1089
1090 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1091 &value_byte);
1092 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1093 if (ret)
1094 goto err_bcn;
1095 }
1096
f4314e81 1097 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1098 if (!getall && !bcn_tb[i])
1099 continue;
1100
1101 netdev->dcbnl_ops->getbcncfg(netdev, i,
1102 &value_integer);
1103 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1104 if (ret)
1105 goto err_bcn;
1106 }
1107
1108 nla_nest_end(dcbnl_skb, bcn_nest);
1109
1110 nlmsg_end(dcbnl_skb, nlh);
1111
1112 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1113 if (ret)
7eaf5077 1114 goto err_out;
859ee3c4
AD		 1115
1116 return 0;
1117
1118err_bcn:
1119 nla_nest_cancel(dcbnl_skb, bcn_nest);
1120nlmsg_failure:
1121err:
858eb711 1122 kfree_skb(dcbnl_skb);
859ee3c4
AD		 1123err_out:
1124 ret = -EINVAL;
1125 return ret;
1126}
1127
1128static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1129 u32 pid, u32 seq, u16 flags)
1130{
1131 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1132 int i;
1133 int ret = -EINVAL;
1134 u8 value_byte;
1135 u32 value_int;
1136
f64f9e71
JP		 1137 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1138 !netdev->dcbnl_ops->setbcnrp)
859ee3c4
AD		 1139 return ret;
1140
1141 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1142 tb[DCB_ATTR_BCN],
1143 dcbnl_pfc_up_nest);
1144 if (ret)
1145 goto err;
1146
1147 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1148 if (data[i] == NULL)
1149 continue;
1150 value_byte = nla_get_u8(data[i]);
1151 netdev->dcbnl_ops->setbcnrp(netdev,
1152 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1153 }
1154
f4314e81 1155 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1156 if (data[i] == NULL)
1157 continue;
1158 value_int = nla_get_u32(data[i]);
1159 netdev->dcbnl_ops->setbcncfg(netdev,
1160 i, value_int);
1161 }
1162
1163 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1164 pid, seq, flags);
1165err:
1166 return ret;
1167}
1168
3e29027a
JF		 1169/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1170 * be completed the entire msg is aborted and error value is returned.
1171 * No attempt is made to reconcile the case where only part of the
1172 * cmd can be completed.
1173 */
1174static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1175 u32 pid, u32 seq, u16 flags)
1176{
1177 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1178 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1179 int err = -EOPNOTSUPP;
1180
1181 if (!ops)
1182 goto err;
1183
1184 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1185 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1186 if (err)
1187 goto err;
1188
1189 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1190 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1191 err = ops->ieee_setets(netdev, ets);
1192 if (err)
1193 goto err;
1194 }
1195
f3d7bc57 1196 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
3e29027a
JF		 1197 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1198 err = ops->ieee_setpfc(netdev, pfc);
1199 if (err)
1200 goto err;
1201 }
1202
9ab933ab 1203 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
3e29027a
JF		 1204 struct nlattr *attr;
1205 int rem;
1206
1207 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1208 struct dcb_app *app_data;
1209 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1210 continue;
1211 app_data = nla_data(attr);
9ab933ab
JF		 1212 if (ops->ieee_setapp)
1213 err = ops->ieee_setapp(netdev, app_data);
1214 else
1215 err = dcb_setapp(netdev, app_data);
3e29027a
JF		 1216 if (err)
1217 goto err;
1218 }
1219 }
1220
1221err:
1222 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1223 pid, seq, flags);
1224 return err;
1225}
1226
dc6ed1df
SR		 1227static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
1228 int app_nested_type, int app_info_type,
1229 int app_entry_type)
eed84713
SR		 1230{
1231 struct dcb_peer_app_info info;
1232 struct dcb_app *table = NULL;
1233 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1234 u16 app_count;
1235 int err;
1236
1237
1238 /**
1239 * retrieve the peer app configuration form the driver. If the driver
1240 * handlers fail exit without doing anything
1241 */
1242 err = ops->peer_getappinfo(netdev, &info, &app_count);
1243 if (!err && app_count) {
1244 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
1245 if (!table)
1246 return -ENOMEM;
1247
1248 err = ops->peer_getapptable(netdev, table);
1249 }
1250
1251 if (!err) {
1252 u16 i;
1253 struct nlattr *app;
1254
1255 /**
1256 * build the message, from here on the only possible failure
1257 * is due to the skb size
1258 */
1259 err = -EMSGSIZE;
1260
dc6ed1df 1261 app = nla_nest_start(skb, app_nested_type);
eed84713
SR		 1262 if (!app)
1263 goto nla_put_failure;
1264
dc6ed1df
SR		 1265 if (app_info_type)
1266 NLA_PUT(skb, app_info_type, sizeof(info), &info);
1267
eed84713 1268 for (i = 0; i < app_count; i++)
dc6ed1df 1269 NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app),
eed84713
SR		 1270 &table[i]);
1271
1272 nla_nest_end(skb, app);
1273 }
1274 err = 0;
1275
1276nla_put_failure:
1277 kfree(table);
1278 return err;
1279}
3e29027a
JF		 1280
1281/* Handle IEEE 802.1Qaz GET commands. */
1282static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1283 u32 pid, u32 seq, u16 flags)
1284{
1285 struct sk_buff *skb;
1286 struct nlmsghdr *nlh;
1287 struct dcbmsg *dcb;
9ab933ab
JF		 1288 struct nlattr *ieee, *app;
1289 struct dcb_app_type *itr;
3e29027a
JF		 1290 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1291 int err;
1292
1293 if (!ops)
1294 return -EOPNOTSUPP;
1295
1296 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1297 if (!skb)
1298 return -ENOBUFS;
1299
1300 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1301
1302 dcb = NLMSG_DATA(nlh);
1303 dcb->dcb_family = AF_UNSPEC;
1304 dcb->cmd = DCB_CMD_IEEE_GET;
1305
1306 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1307
1308 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1309 if (!ieee)
1310 goto nla_put_failure;
1311
1312 if (ops->ieee_getets) {
1313 struct ieee_ets ets;
1314 err = ops->ieee_getets(netdev, &ets);
1315 if (!err)
1316 NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
1317 }
1318
1319 if (ops->ieee_getpfc) {
1320 struct ieee_pfc pfc;
1321 err = ops->ieee_getpfc(netdev, &pfc);
1322 if (!err)
1323 NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
1324 }
1325
9ab933ab
JF		 1326 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1327 if (!app)
1328 goto nla_put_failure;
1329
1330 spin_lock(&dcb_lock);
1331 list_for_each_entry(itr, &dcb_app_list, list) {
70bfa2d2
DC		 1332 if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
1333 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1334 &itr->app);
1335 if (err) {
1336 spin_unlock(&dcb_lock);
1337 goto nla_put_failure;
1338 }
1339 }
9ab933ab
JF		 1340 }
1341 spin_unlock(&dcb_lock);
1342 nla_nest_end(skb, app);
1343
eed84713
SR		 1344 /* get peer info if available */
1345 if (ops->ieee_peer_getets) {
1346 struct ieee_ets ets;
1347 err = ops->ieee_peer_getets(netdev, &ets);
1348 if (!err)
1349 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
1350 }
1351
1352 if (ops->ieee_peer_getpfc) {
1353 struct ieee_pfc pfc;
1354 err = ops->ieee_peer_getpfc(netdev, &pfc);
1355 if (!err)
1356 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
1357 }
1358
1359 if (ops->peer_getappinfo && ops->peer_getapptable) {
dc6ed1df
SR		 1360 err = dcbnl_build_peer_app(netdev, skb,
1361 DCB_ATTR_IEEE_PEER_APP,
1362 DCB_ATTR_IEEE_APP_UNSPEC,
1363 DCB_ATTR_IEEE_APP);
eed84713
SR		 1364 if (err)
1365 goto nla_put_failure;
1366 }
1367
3e29027a
JF		 1368 nla_nest_end(skb, ieee);
1369 nlmsg_end(skb, nlh);
1370
1371 return rtnl_unicast(skb, &init_net, pid);
1372nla_put_failure:
1373 nlmsg_cancel(skb, nlh);
1374nlmsg_failure:
1375 kfree_skb(skb);
1376 return -1;
1377}
1378
6241b625
SR		 1379/* DCBX configuration */
1380static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1381 u32 pid, u32 seq, u16 flags)
1382{
7f891cf1 1383 int ret;
6241b625
SR		 1384
1385 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1386 return -EOPNOTSUPP;
6241b625
SR		 1387
1388 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1389 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1390
1391 return ret;
1392}
1393
1394static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1395 u32 pid, u32 seq, u16 flags)
1396{
7f891cf1 1397 int ret;
6241b625
SR		 1398 u8 value;
1399
7f891cf1
SR		 1400 if (!netdev->dcbnl_ops->setdcbx)
1401 return -EOPNOTSUPP;
1402
1403 if (!tb[DCB_ATTR_DCBX])
1404 return -EINVAL;
6241b625
SR		 1405
1406 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1407
1408 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1409 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1410 pid, seq, flags);
1411
1412 return ret;
1413}
1414
ea45fe4e
SR		 1415static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1416 u32 pid, u32 seq, u16 flags)
1417{
1418 struct sk_buff *dcbnl_skb;
1419 struct nlmsghdr *nlh;
1420 struct dcbmsg *dcb;
1421 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1422 u8 value;
7f891cf1 1423 int ret, i;
ea45fe4e
SR		 1424 int getall = 0;
1425
7f891cf1
SR		 1426 if (!netdev->dcbnl_ops->getfeatcfg)
1427 return -EOPNOTSUPP;
1428
1429 if (!tb[DCB_ATTR_FEATCFG])
1430 return -EINVAL;
ea45fe4e
SR		 1431
1432 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1433 dcbnl_featcfg_nest);
7f891cf1 1434 if (ret)
ea45fe4e 1435 goto err_out;
ea45fe4e
SR		 1436
1437 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1438 if (!dcbnl_skb) {
7f891cf1 1439 ret = -ENOBUFS;
ea45fe4e
SR		 1440 goto err_out;
1441 }
1442
1443 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1444
1445 dcb = NLMSG_DATA(nlh);
1446 dcb->dcb_family = AF_UNSPEC;
1447 dcb->cmd = DCB_CMD_GFEATCFG;
1448
1449 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1450 if (!nest) {
7f891cf1
SR		 1451 ret = -EMSGSIZE;
1452 goto nla_put_failure;
ea45fe4e
SR		 1453 }
1454
1455 if (data[DCB_FEATCFG_ATTR_ALL])
1456 getall = 1;
1457
1458 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1459 if (!getall && !data[i])
1460 continue;
1461
1462 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1463 if (!ret)
ea45fe4e
SR		 1464 ret = nla_put_u8(dcbnl_skb, i, value);
1465
7f891cf1
SR		 1466 if (ret) {
1467 nla_nest_cancel(dcbnl_skb, nest);
1468 goto nla_put_failure;
1469 }
ea45fe4e
SR		 1470 }
1471 nla_nest_end(dcbnl_skb, nest);
1472
1473 nlmsg_end(dcbnl_skb, nlh);
1474
7f891cf1
SR		 1475 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1476nla_put_failure:
1477 nlmsg_cancel(dcbnl_skb, nlh);
ea45fe4e 1478nlmsg_failure:
ea45fe4e
SR		 1479 kfree_skb(dcbnl_skb);
1480err_out:
1481 return ret;
1482}
1483
1484static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1485 u32 pid, u32 seq, u16 flags)
1486{
1487 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1488 int ret, i;
ea45fe4e 1489 u8 value;
ea45fe4e 1490
7f891cf1
SR		 1491 if (!netdev->dcbnl_ops->setfeatcfg)
1492 return -ENOTSUPP;
1493
1494 if (!tb[DCB_ATTR_FEATCFG])
1495 return -EINVAL;
ea45fe4e
SR		 1496
1497 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1498 dcbnl_featcfg_nest);
1499
7f891cf1 1500 if (ret)
ea45fe4e 1501 goto err;
ea45fe4e
SR		 1502
1503 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1504 if (data[i] == NULL)
1505 continue;
1506
1507 value = nla_get_u8(data[i]);
1508
1509 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1510
1511 if (ret)
7f891cf1 1512 goto err;
ea45fe4e 1513 }
ea45fe4e 1514err:
7f891cf1
SR		 1515 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1516 pid, seq, flags);
1517
ea45fe4e
SR		 1518 return ret;
1519}
1520
dc6ed1df
SR		 1521/* Handle CEE DCBX GET commands. */
1522static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
1523 u32 pid, u32 seq, u16 flags)
1524{
1525 struct sk_buff *skb;
1526 struct nlmsghdr *nlh;
1527 struct dcbmsg *dcb;
1528 struct nlattr *cee;
1529 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1530 int err;
1531
1532 if (!ops)
1533 return -EOPNOTSUPP;
1534
1535 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1536 if (!skb)
1537 return -ENOBUFS;
1538
1539 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1540
1541 dcb = NLMSG_DATA(nlh);
1542 dcb->dcb_family = AF_UNSPEC;
1543 dcb->cmd = DCB_CMD_CEE_GET;
1544
1545 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1546
1547 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1548 if (!cee)
1549 goto nla_put_failure;
1550
1551 /* get peer info if available */
1552 if (ops->cee_peer_getpg) {
1553 struct cee_pg pg;
1554 err = ops->cee_peer_getpg(netdev, &pg);
1555 if (!err)
1556 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
1557 }
1558
1559 if (ops->cee_peer_getpfc) {
1560 struct cee_pfc pfc;
1561 err = ops->cee_peer_getpfc(netdev, &pfc);
1562 if (!err)
1563 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);
1564 }
1565
1566 if (ops->peer_getappinfo && ops->peer_getapptable) {
1567 err = dcbnl_build_peer_app(netdev, skb,
1568 DCB_ATTR_CEE_PEER_APP_TABLE,
1569 DCB_ATTR_CEE_PEER_APP_INFO,
1570 DCB_ATTR_CEE_PEER_APP);
1571 if (err)
1572 goto nla_put_failure;
1573 }
1574
1575 nla_nest_end(skb, cee);
1576 nlmsg_end(skb, nlh);
1577
1578 return rtnl_unicast(skb, &init_net, pid);
1579nla_put_failure:
1580 nlmsg_cancel(skb, nlh);
1581nlmsg_failure:
1582 kfree_skb(skb);
1583 return -1;
1584}
1585
2f90b865
AD		 1586static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1587{
1588 struct net *net = sock_net(skb->sk);
1589 struct net_device *netdev;
1590 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1591 struct nlattr *tb[DCB_ATTR_MAX + 1];
1592 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1593 int ret = -EINVAL;
1594
09ad9bc7 1595 if (!net_eq(net, &init_net))
2f90b865
AD		 1596 return -EINVAL;
1597
1598 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1599 dcbnl_rtnl_policy);
1600 if (ret < 0)
1601 return ret;
1602
1603 if (!tb[DCB_ATTR_IFNAME])
1604 return -EINVAL;
1605
1606 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1607 if (!netdev)
1608 return -EINVAL;
1609
1610 if (!netdev->dcbnl_ops)
1611 goto errout;
1612
1613 switch (dcb->cmd) {
1614 case DCB_CMD_GSTATE:
1615 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1616 nlh->nlmsg_flags);
1617 goto out;
1618 case DCB_CMD_PFC_GCFG:
1619 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1620 nlh->nlmsg_flags);
1621 goto out;
1622 case DCB_CMD_GPERM_HWADDR:
1623 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1624 nlh->nlmsg_flags);
1625 goto out;
1626 case DCB_CMD_PGTX_GCFG:
1627 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1628 nlh->nlmsg_flags);
1629 goto out;
1630 case DCB_CMD_PGRX_GCFG:
1631 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1632 nlh->nlmsg_flags);
1633 goto out;
859ee3c4
AD		 1634 case DCB_CMD_BCN_GCFG:
1635 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1636 nlh->nlmsg_flags);
1637 goto out;
2f90b865
AD		 1638 case DCB_CMD_SSTATE:
1639 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1640 nlh->nlmsg_flags);
1641 goto out;
1642 case DCB_CMD_PFC_SCFG:
1643 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1644 nlh->nlmsg_flags);
1645 goto out;
1646
1647 case DCB_CMD_SET_ALL:
1648 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1649 nlh->nlmsg_flags);
1650 goto out;
1651 case DCB_CMD_PGTX_SCFG:
1652 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1653 nlh->nlmsg_flags);
1654 goto out;
1655 case DCB_CMD_PGRX_SCFG:
1656 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1657 nlh->nlmsg_flags);
1658 goto out;
46132188
AD		 1659 case DCB_CMD_GCAP:
1660 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1661 nlh->nlmsg_flags);
1662 goto out;
33dbabc4
AD		 1663 case DCB_CMD_GNUMTCS:
1664 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1665 nlh->nlmsg_flags);
1666 goto out;
1667 case DCB_CMD_SNUMTCS:
1668 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1669 nlh->nlmsg_flags);
1670 goto out;
0eb3aa9b
AD		 1671 case DCB_CMD_PFC_GSTATE:
1672 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1673 nlh->nlmsg_flags);
1674 goto out;
1675 case DCB_CMD_PFC_SSTATE:
1676 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1677 nlh->nlmsg_flags);
1678 goto out;
859ee3c4
AD		 1679 case DCB_CMD_BCN_SCFG:
1680 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1681 nlh->nlmsg_flags);
1682 goto out;
57949686
YZ		 1683 case DCB_CMD_GAPP:
1684 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1685 nlh->nlmsg_flags);
1686 goto out;
1687 case DCB_CMD_SAPP:
1688 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1689 nlh->nlmsg_flags);
1690 goto out;
3e29027a
JF		 1691 case DCB_CMD_IEEE_SET:
1692 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
1693 nlh->nlmsg_flags);
1694 goto out;
1695 case DCB_CMD_IEEE_GET:
1696 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
1697 nlh->nlmsg_flags);
1698 goto out;
6241b625
SR		 1699 case DCB_CMD_GDCBX:
1700 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1701 nlh->nlmsg_flags);
1702 goto out;
1703 case DCB_CMD_SDCBX:
1704 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1705 nlh->nlmsg_flags);
1706 goto out;
ea45fe4e
SR		 1707 case DCB_CMD_GFEATCFG:
1708 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1709 nlh->nlmsg_flags);
1710 goto out;
1711 case DCB_CMD_SFEATCFG:
1712 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1713 nlh->nlmsg_flags);
1714 goto out;
dc6ed1df
SR		 1715 case DCB_CMD_CEE_GET:
1716 ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
1717 nlh->nlmsg_flags);
1718 goto out;
2f90b865
AD		 1719 default:
1720 goto errout;
1721 }
1722errout:
1723 ret = -EINVAL;
1724out:
1725 dev_put(netdev);
1726 return ret;
1727}
1728
9ab933ab
JF		 1729/**
1730 * dcb_getapp - retrieve the DCBX application user priority
1731 *
1732 * On success returns a non-zero 802.1p user priority bitmap
1733 * otherwise returns 0 as the invalid user priority bitmap to
1734 * indicate an error.
1735 */
1736u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1737{
1738 struct dcb_app_type *itr;
1739 u8 prio = 0;
1740
1741 spin_lock(&dcb_lock);
1742 list_for_each_entry(itr, &dcb_app_list, list) {
1743 if (itr->app.selector == app->selector &&
1744 itr->app.protocol == app->protocol &&
1745 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1746 prio = itr->app.priority;
1747 break;
1748 }
1749 }
1750 spin_unlock(&dcb_lock);
1751
1752 return prio;
1753}
1754EXPORT_SYMBOL(dcb_getapp);
1755
1756/**
1757 * ixgbe_dcbnl_setapp - add dcb application data to app list
1758 *
1759 * Priority 0 is the default priority this removes applications
1760 * from the app list if the priority is set to zero.
1761 */
1762u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
1763{
1764 struct dcb_app_type *itr;
7ec79270
JF		 1765 struct dcb_app_type event;
1766
1767 memcpy(&event.name, dev->name, sizeof(event.name));
1768 memcpy(&event.app, new, sizeof(event.app));
9ab933ab
JF		 1769
1770 spin_lock(&dcb_lock);
1771 /* Search for existing match and replace */
1772 list_for_each_entry(itr, &dcb_app_list, list) {
1773 if (itr->app.selector == new->selector &&
1774 itr->app.protocol == new->protocol &&
1775 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1776 if (new->priority)
1777 itr->app.priority = new->priority;
1778 else {
1779 list_del(&itr->list);
1780 kfree(itr);
1781 }
1782 goto out;
1783 }
1784 }
1785 /* App type does not exist add new application type */
1786 if (new->priority) {
1787 struct dcb_app_type *entry;
1788 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1789 if (!entry) {
1790 spin_unlock(&dcb_lock);
1791 return -ENOMEM;
1792 }
1793
1794 memcpy(&entry->app, new, sizeof(*new));
1795 strncpy(entry->name, dev->name, IFNAMSIZ);
1796 list_add(&entry->list, &dcb_app_list);
1797 }
1798out:
1799 spin_unlock(&dcb_lock);
7ec79270 1800 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
9ab933ab
JF		 1801 return 0;
1802}
1803EXPORT_SYMBOL(dcb_setapp);
1804
7c14c3f1 1805static void dcb_flushapp(void)
9ab933ab
JF		 1806{
1807 struct dcb_app_type *app;
2a8fe003 1808 struct dcb_app_type *tmp;
9ab933ab
JF		 1809
1810 spin_lock(&dcb_lock);
2a8fe003 1811 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
9ab933ab
JF		 1812 list_del(&app->list);
1813 kfree(app);
1814 }
1815 spin_unlock(&dcb_lock);
1816}
1817
2f90b865
AD		 1818static int __init dcbnl_init(void)
1819{
9ab933ab
JF		 1820 INIT_LIST_HEAD(&dcb_app_list);
1821
2f90b865
AD		 1822 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
1823 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
1824
1825 return 0;
1826}
1827module_init(dcbnl_init);
1828
1829static void __exit dcbnl_exit(void)
1830{
1831 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1832 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
9ab933ab 1833 dcb_flushapp();
2f90b865
AD		 1834}
1835module_exit(dcbnl_exit);
kernel source for telekom puls (alcatel/mediatek)