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net: fix double skb free in dcbnl
[net-next-2.6.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>
22#include <net/netlink.h>
23#include <net/rtnetlink.h>
24#include <linux/dcbnl.h>
25#include <linux/rtnetlink.h>
26#include <net/sock.h>
27
28/**
29 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
30 * intended to allow network traffic with differing requirements
31 * (highly reliable, no drops vs. best effort vs. low latency) to operate
32 * and co-exist on Ethernet. Current DCB features are:
33 *
34 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
35 * framework for assigning bandwidth guarantees to traffic classes.
36 *
37 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
38 * can work independently for each 802.1p priority.
39 *
40 * Congestion Notification - provides a mechanism for end-to-end congestion
41 * control for protocols which do not have built-in congestion management.
42 *
43 * More information about the emerging standards for these Ethernet features
44 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
45 *
46 * This file implements an rtnetlink interface to allow configuration of DCB
47 * features for capable devices.
48 */
49
50MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
7a6b6f51 51MODULE_DESCRIPTION("Data Center Bridging netlink interface");
2f90b865
AD		 52MODULE_LICENSE("GPL");
53
54/**************** DCB attribute policies *************************************/
55
56/* DCB netlink attributes policy */
57static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 58 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
59 [DCB_ATTR_STATE] = {.type = NLA_U8},
60 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
61 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
62 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
2f90b865 63 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 64 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
65 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
66 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 67 [DCB_ATTR_APP] = {.type = NLA_NESTED},
2f90b865
AD		 68};
69
70/* DCB priority flow control to User Priority nested attributes */
71static struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
72 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
73 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
74 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
75 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
76 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
77 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
81};
82
83/* DCB priority grouping nested attributes */
84static struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
85 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
86 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
87 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
88 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
89 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
90 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
95 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
96 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
97 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
98 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
99 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
103};
104
105/* DCB traffic class nested attributes. */
106static struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
107 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
108 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
109 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
110 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
111 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
112};
113
46132188
AD		 114/* DCB capabilities nested attributes. */
115static struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
116 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
117 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
118 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
119 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
120 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
121 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
122 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
124};
2f90b865 125
33dbabc4
AD		 126/* DCB capabilities nested attributes. */
127static struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
128 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
129 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
130 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
131};
132
859ee3c4
AD		 133/* DCB BCN nested attributes. */
134static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
135 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
136 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
137 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
138 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
139 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
140 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
141 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
f4314e81
DS		 144 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
145 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 146 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
147 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
148 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
149 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
150 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
152 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
160};
161
6fa382af
YZ		 162/* DCB APP nested attributes. */
163static struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
164 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
165 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
166 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
167};
168
2f90b865
AD		 169/* standard netlink reply call */
170static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
171 u32 seq, u16 flags)
172{
173 struct sk_buff *dcbnl_skb;
174 struct dcbmsg *dcb;
175 struct nlmsghdr *nlh;
176 int ret = -EINVAL;
177
178 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
179 if (!dcbnl_skb)
180 return ret;
181
182 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
183
184 dcb = NLMSG_DATA(nlh);
185 dcb->dcb_family = AF_UNSPEC;
186 dcb->cmd = cmd;
187 dcb->dcb_pad = 0;
188
189 ret = nla_put_u8(dcbnl_skb, attr, value);
190 if (ret)
191 goto err;
192
193 /* end the message, assign the nlmsg_len. */
194 nlmsg_end(dcbnl_skb, nlh);
195 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
196 if (ret)
7eaf5077 197 return -EINVAL;
2f90b865
AD		 198
199 return 0;
200nlmsg_failure:
201err:
858eb711 202 kfree_skb(dcbnl_skb);
2f90b865
AD		 203 return ret;
204}
205
206static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
207 u32 pid, u32 seq, u16 flags)
208{
209 int ret = -EINVAL;
210
211 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
212 if (!netdev->dcbnl_ops->getstate)
213 return ret;
214
215 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
216 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
217
218 return ret;
219}
220
221static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
222 u32 pid, u32 seq, u16 flags)
223{
224 struct sk_buff *dcbnl_skb;
225 struct nlmsghdr *nlh;
226 struct dcbmsg *dcb;
227 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
228 u8 value;
229 int ret = -EINVAL;
230 int i;
231 int getall = 0;
232
233 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
234 return ret;
235
236 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
237 tb[DCB_ATTR_PFC_CFG],
238 dcbnl_pfc_up_nest);
239 if (ret)
240 goto err_out;
241
242 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
243 if (!dcbnl_skb)
244 goto err_out;
245
246 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
247
248 dcb = NLMSG_DATA(nlh);
249 dcb->dcb_family = AF_UNSPEC;
250 dcb->cmd = DCB_CMD_PFC_GCFG;
251
252 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
253 if (!nest)
254 goto err;
255
256 if (data[DCB_PFC_UP_ATTR_ALL])
257 getall = 1;
258
259 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
260 if (!getall && !data[i])
261 continue;
262
263 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
264 &value);
265 ret = nla_put_u8(dcbnl_skb, i, value);
266
267 if (ret) {
268 nla_nest_cancel(dcbnl_skb, nest);
269 goto err;
270 }
271 }
272 nla_nest_end(dcbnl_skb, nest);
273
274 nlmsg_end(dcbnl_skb, nlh);
275
276 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
277 if (ret)
7eaf5077 278 goto err_out;
2f90b865
AD		 279
280 return 0;
281nlmsg_failure:
282err:
858eb711 283 kfree_skb(dcbnl_skb);
2f90b865
AD		 284err_out:
285 return -EINVAL;
286}
287
288static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
289 u32 pid, u32 seq, u16 flags)
290{
291 struct sk_buff *dcbnl_skb;
292 struct nlmsghdr *nlh;
293 struct dcbmsg *dcb;
294 u8 perm_addr[MAX_ADDR_LEN];
295 int ret = -EINVAL;
296
297 if (!netdev->dcbnl_ops->getpermhwaddr)
298 return ret;
299
300 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
301 if (!dcbnl_skb)
302 goto err_out;
303
304 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
305
306 dcb = NLMSG_DATA(nlh);
307 dcb->dcb_family = AF_UNSPEC;
308 dcb->cmd = DCB_CMD_GPERM_HWADDR;
309
310 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
311
312 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
313 perm_addr);
314
315 nlmsg_end(dcbnl_skb, nlh);
316
317 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
318 if (ret)
7eaf5077 319 goto err_out;
2f90b865
AD		 320
321 return 0;
322
323nlmsg_failure:
858eb711 324 kfree_skb(dcbnl_skb);
2f90b865
AD		 325err_out:
326 return -EINVAL;
327}
328
46132188
AD		 329static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
330 u32 pid, u32 seq, u16 flags)
331{
332 struct sk_buff *dcbnl_skb;
333 struct nlmsghdr *nlh;
334 struct dcbmsg *dcb;
335 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
336 u8 value;
337 int ret = -EINVAL;
338 int i;
339 int getall = 0;
340
341 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
342 return ret;
343
344 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
345 dcbnl_cap_nest);
346 if (ret)
347 goto err_out;
348
349 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
350 if (!dcbnl_skb)
351 goto err_out;
352
353 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
354
355 dcb = NLMSG_DATA(nlh);
356 dcb->dcb_family = AF_UNSPEC;
357 dcb->cmd = DCB_CMD_GCAP;
358
359 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
360 if (!nest)
361 goto err;
362
363 if (data[DCB_CAP_ATTR_ALL])
364 getall = 1;
365
366 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
367 if (!getall && !data[i])
368 continue;
369
370 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
371 ret = nla_put_u8(dcbnl_skb, i, value);
372
373 if (ret) {
374 nla_nest_cancel(dcbnl_skb, nest);
375 goto err;
376 }
377 }
378 }
379 nla_nest_end(dcbnl_skb, nest);
380
381 nlmsg_end(dcbnl_skb, nlh);
382
383 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
384 if (ret)
7eaf5077 385 goto err_out;
46132188
AD		 386
387 return 0;
388nlmsg_failure:
389err:
858eb711 390 kfree_skb(dcbnl_skb);
46132188
AD		 391err_out:
392 return -EINVAL;
393}
394
33dbabc4
AD		 395static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
396 u32 pid, u32 seq, u16 flags)
397{
398 struct sk_buff *dcbnl_skb;
399 struct nlmsghdr *nlh;
400 struct dcbmsg *dcb;
401 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
402 u8 value;
403 int ret = -EINVAL;
404 int i;
405 int getall = 0;
406
407 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
408 return ret;
409
410 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
411 dcbnl_numtcs_nest);
412 if (ret) {
413 ret = -EINVAL;
414 goto err_out;
415 }
416
417 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
418 if (!dcbnl_skb) {
419 ret = -EINVAL;
420 goto err_out;
421 }
422
423 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
424
425 dcb = NLMSG_DATA(nlh);
426 dcb->dcb_family = AF_UNSPEC;
427 dcb->cmd = DCB_CMD_GNUMTCS;
428
429 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
430 if (!nest) {
431 ret = -EINVAL;
432 goto err;
433 }
434
435 if (data[DCB_NUMTCS_ATTR_ALL])
436 getall = 1;
437
438 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
439 if (!getall && !data[i])
440 continue;
441
442 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
443 if (!ret) {
444 ret = nla_put_u8(dcbnl_skb, i, value);
445
446 if (ret) {
447 nla_nest_cancel(dcbnl_skb, nest);
448 ret = -EINVAL;
449 goto err;
450 }
451 } else {
452 goto err;
453 }
454 }
455 nla_nest_end(dcbnl_skb, nest);
456
457 nlmsg_end(dcbnl_skb, nlh);
458
459 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
460 if (ret) {
461 ret = -EINVAL;
7eaf5077 462 goto err_out;
33dbabc4
AD		 463 }
464
465 return 0;
466nlmsg_failure:
467err:
858eb711 468 kfree_skb(dcbnl_skb);
33dbabc4
AD		 469err_out:
470 return ret;
471}
472
473static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
474 u32 pid, u32 seq, u16 flags)
475{
476 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
477 int ret = -EINVAL;
478 u8 value;
479 int i;
480
8b124a8e 481 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
33dbabc4
AD		 482 return ret;
483
484 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
485 dcbnl_numtcs_nest);
486
487 if (ret) {
488 ret = -EINVAL;
489 goto err;
490 }
491
492 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
493 if (data[i] == NULL)
494 continue;
495
496 value = nla_get_u8(data[i]);
497
498 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
499
500 if (ret)
501 goto operr;
502 }
503
504operr:
505 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
506 DCB_ATTR_NUMTCS, pid, seq, flags);
507
508err:
509 return ret;
510}
511
0eb3aa9b
AD		 512static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
513 u32 pid, u32 seq, u16 flags)
514{
515 int ret = -EINVAL;
516
517 if (!netdev->dcbnl_ops->getpfcstate)
518 return ret;
519
520 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
521 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
522 pid, seq, flags);
523
524 return ret;
525}
526
527static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
528 u32 pid, u32 seq, u16 flags)
529{
530 int ret = -EINVAL;
531 u8 value;
532
533 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
534 return ret;
535
536 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
537
538 netdev->dcbnl_ops->setpfcstate(netdev, value);
539
540 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
541 pid, seq, flags);
542
543 return ret;
544}
545
57949686
YZ		 546static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
547 u32 pid, u32 seq, u16 flags)
548{
549 struct sk_buff *dcbnl_skb;
550 struct nlmsghdr *nlh;
551 struct dcbmsg *dcb;
552 struct nlattr *app_nest;
553 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
554 u16 id;
555 u8 up, idtype;
556 int ret = -EINVAL;
557
558 if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->getapp)
559 goto out;
560
561 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
562 dcbnl_app_nest);
563 if (ret)
564 goto out;
565
566 ret = -EINVAL;
567 /* all must be non-null */
568 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
569 (!app_tb[DCB_APP_ATTR_ID]))
570 goto out;
571
572 /* either by eth type or by socket number */
573 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
574 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
575 (idtype != DCB_APP_IDTYPE_PORTNUM))
576 goto out;
577
578 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
579 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
580
581 /* send this back */
582 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
583 if (!dcbnl_skb)
584 goto out;
585
586 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
587 dcb = NLMSG_DATA(nlh);
588 dcb->dcb_family = AF_UNSPEC;
589 dcb->cmd = DCB_CMD_GAPP;
590
591 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
592 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
593 if (ret)
594 goto out_cancel;
595
596 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
597 if (ret)
598 goto out_cancel;
599
600 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
601 if (ret)
602 goto out_cancel;
603
604 nla_nest_end(dcbnl_skb, app_nest);
605 nlmsg_end(dcbnl_skb, nlh);
606
607 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
608 if (ret)
609 goto nlmsg_failure;
610
611 goto out;
612
613out_cancel:
614 nla_nest_cancel(dcbnl_skb, app_nest);
615nlmsg_failure:
616 kfree_skb(dcbnl_skb);
617out:
618 return ret;
619}
620
621static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
622 u32 pid, u32 seq, u16 flags)
623{
624 int ret = -EINVAL;
625 u16 id;
626 u8 up, idtype;
627 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
628
629 if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->setapp)
630 goto out;
631
632 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
633 dcbnl_app_nest);
634 if (ret)
635 goto out;
636
637 ret = -EINVAL;
638 /* all must be non-null */
639 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
640 (!app_tb[DCB_APP_ATTR_ID]) ||
641 (!app_tb[DCB_APP_ATTR_PRIORITY]))
642 goto out;
643
644 /* either by eth type or by socket number */
645 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
646 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
647 (idtype != DCB_APP_IDTYPE_PORTNUM))
648 goto out;
649
650 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
651 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
652
653 ret = dcbnl_reply(netdev->dcbnl_ops->setapp(netdev, idtype, id, up),
654 RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
655 pid, seq, flags);
656out:
657 return ret;
658}
659
2f90b865
AD		 660static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
661 u32 pid, u32 seq, u16 flags, int dir)
662{
663 struct sk_buff *dcbnl_skb;
664 struct nlmsghdr *nlh;
665 struct dcbmsg *dcb;
666 struct nlattr *pg_nest, *param_nest, *data;
667 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
668 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
669 u8 prio, pgid, tc_pct, up_map;
670 int ret = -EINVAL;
671 int getall = 0;
672 int i;
673
674 if (!tb[DCB_ATTR_PG_CFG] ||
675 !netdev->dcbnl_ops->getpgtccfgtx ||
676 !netdev->dcbnl_ops->getpgtccfgrx ||
677 !netdev->dcbnl_ops->getpgbwgcfgtx ||
678 !netdev->dcbnl_ops->getpgbwgcfgrx)
679 return ret;
680
681 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
682 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
683
684 if (ret)
685 goto err_out;
686
687 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
688 if (!dcbnl_skb)
689 goto err_out;
690
691 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
692
693 dcb = NLMSG_DATA(nlh);
694 dcb->dcb_family = AF_UNSPEC;
695 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
696
697 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
698 if (!pg_nest)
699 goto err;
700
701 if (pg_tb[DCB_PG_ATTR_TC_ALL])
702 getall = 1;
703
704 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
705 if (!getall && !pg_tb[i])
706 continue;
707
708 if (pg_tb[DCB_PG_ATTR_TC_ALL])
709 data = pg_tb[DCB_PG_ATTR_TC_ALL];
710 else
711 data = pg_tb[i];
712 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
713 data, dcbnl_tc_param_nest);
714 if (ret)
715 goto err_pg;
716
717 param_nest = nla_nest_start(dcbnl_skb, i);
718 if (!param_nest)
719 goto err_pg;
720
721 pgid = DCB_ATTR_VALUE_UNDEFINED;
722 prio = DCB_ATTR_VALUE_UNDEFINED;
723 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
724 up_map = DCB_ATTR_VALUE_UNDEFINED;
725
726 if (dir) {
727 /* Rx */
728 netdev->dcbnl_ops->getpgtccfgrx(netdev,
729 i - DCB_PG_ATTR_TC_0, &prio,
730 &pgid, &tc_pct, &up_map);
731 } else {
732 /* Tx */
733 netdev->dcbnl_ops->getpgtccfgtx(netdev,
734 i - DCB_PG_ATTR_TC_0, &prio,
735 &pgid, &tc_pct, &up_map);
736 }
737
738 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
739 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
740 ret = nla_put_u8(dcbnl_skb,
741 DCB_TC_ATTR_PARAM_PGID, pgid);
742 if (ret)
743 goto err_param;
744 }
745 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
746 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
747 ret = nla_put_u8(dcbnl_skb,
748 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
749 if (ret)
750 goto err_param;
751 }
752 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
753 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
754 ret = nla_put_u8(dcbnl_skb,
755 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
756 if (ret)
757 goto err_param;
758 }
759 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
760 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
761 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
762 tc_pct);
763 if (ret)
764 goto err_param;
765 }
766 nla_nest_end(dcbnl_skb, param_nest);
767 }
768
769 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
770 getall = 1;
771 else
772 getall = 0;
773
774 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
775 if (!getall && !pg_tb[i])
776 continue;
777
778 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
779
780 if (dir) {
781 /* Rx */
782 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
783 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
784 } else {
785 /* Tx */
786 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
787 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
788 }
789 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
790
791 if (ret)
792 goto err_pg;
793 }
794
795 nla_nest_end(dcbnl_skb, pg_nest);
796
797 nlmsg_end(dcbnl_skb, nlh);
798
799 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
800 if (ret)
7eaf5077 801 goto err_out;
2f90b865
AD		 802
803 return 0;
804
805err_param:
806 nla_nest_cancel(dcbnl_skb, param_nest);
807err_pg:
808 nla_nest_cancel(dcbnl_skb, pg_nest);
809nlmsg_failure:
810err:
858eb711 811 kfree_skb(dcbnl_skb);
2f90b865
AD		 812err_out:
813 ret = -EINVAL;
814 return ret;
815}
816
817static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
818 u32 pid, u32 seq, u16 flags)
819{
820 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
821}
822
823static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
824 u32 pid, u32 seq, u16 flags)
825{
826 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
827}
828
829static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
830 u32 pid, u32 seq, u16 flags)
831{
832 int ret = -EINVAL;
833 u8 value;
834
835 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
836 return ret;
837
838 value = nla_get_u8(tb[DCB_ATTR_STATE]);
839
1486a61e
DS		 840 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
841 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
2f90b865
AD		 842 pid, seq, flags);
843
844 return ret;
845}
846
847static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
848 u32 pid, u32 seq, u16 flags)
849{
850 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
851 int i;
852 int ret = -EINVAL;
853 u8 value;
854
855 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
856 return ret;
857
858 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
859 tb[DCB_ATTR_PFC_CFG],
860 dcbnl_pfc_up_nest);
861 if (ret)
862 goto err;
863
864 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
865 if (data[i] == NULL)
866 continue;
867 value = nla_get_u8(data[i]);
868 netdev->dcbnl_ops->setpfccfg(netdev,
869 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
870 }
871
872 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
873 pid, seq, flags);
874err:
875 return ret;
876}
877
878static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
879 u32 pid, u32 seq, u16 flags)
880{
881 int ret = -EINVAL;
882
883 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
884 return ret;
885
886 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
887 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
888
889 return ret;
890}
891
892static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
893 u32 pid, u32 seq, u16 flags, int dir)
894{
895 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
896 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
897 int ret = -EINVAL;
898 int i;
899 u8 pgid;
900 u8 up_map;
901 u8 prio;
902 u8 tc_pct;
903
904 if (!tb[DCB_ATTR_PG_CFG] ||
905 !netdev->dcbnl_ops->setpgtccfgtx ||
906 !netdev->dcbnl_ops->setpgtccfgrx ||
907 !netdev->dcbnl_ops->setpgbwgcfgtx ||
908 !netdev->dcbnl_ops->setpgbwgcfgrx)
909 return ret;
910
911 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
912 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
913 if (ret)
914 goto err;
915
916 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
917 if (!pg_tb[i])
918 continue;
919
920 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
921 pg_tb[i], dcbnl_tc_param_nest);
922 if (ret)
923 goto err;
924
925 pgid = DCB_ATTR_VALUE_UNDEFINED;
926 prio = DCB_ATTR_VALUE_UNDEFINED;
927 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
928 up_map = DCB_ATTR_VALUE_UNDEFINED;
929
930 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
931 prio =
932 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
933
934 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
935 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
936
937 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
938 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
939
940 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
941 up_map =
942 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
943
944 /* dir: Tx = 0, Rx = 1 */
945 if (dir) {
946 /* Rx */
947 netdev->dcbnl_ops->setpgtccfgrx(netdev,
948 i - DCB_PG_ATTR_TC_0,
949 prio, pgid, tc_pct, up_map);
950 } else {
951 /* Tx */
952 netdev->dcbnl_ops->setpgtccfgtx(netdev,
953 i - DCB_PG_ATTR_TC_0,
954 prio, pgid, tc_pct, up_map);
955 }
956 }
957
958 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
959 if (!pg_tb[i])
960 continue;
961
962 tc_pct = nla_get_u8(pg_tb[i]);
963
964 /* dir: Tx = 0, Rx = 1 */
965 if (dir) {
966 /* Rx */
967 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
968 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
969 } else {
970 /* Tx */
971 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
972 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
973 }
974 }
975
976 ret = dcbnl_reply(0, RTM_SETDCB,
977 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
978 DCB_ATTR_PG_CFG, pid, seq, flags);
979
980err:
981 return ret;
982}
983
984static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
985 u32 pid, u32 seq, u16 flags)
986{
987 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
988}
989
990static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
991 u32 pid, u32 seq, u16 flags)
992{
993 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
994}
995
859ee3c4
AD		 996static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
997 u32 pid, u32 seq, u16 flags)
998{
999 struct sk_buff *dcbnl_skb;
1000 struct nlmsghdr *nlh;
1001 struct dcbmsg *dcb;
1002 struct nlattr *bcn_nest;
1003 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1004 u8 value_byte;
1005 u32 value_integer;
1006 int ret = -EINVAL;
1007 bool getall = false;
1008 int i;
1009
1010 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1011 !netdev->dcbnl_ops->getbcncfg)
1012 return ret;
1013
1014 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1015 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1016
1017 if (ret)
1018 goto err_out;
1019
1020 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1021 if (!dcbnl_skb)
1022 goto err_out;
1023
1024 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1025
1026 dcb = NLMSG_DATA(nlh);
1027 dcb->dcb_family = AF_UNSPEC;
1028 dcb->cmd = DCB_CMD_BCN_GCFG;
1029
1030 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1031 if (!bcn_nest)
1032 goto err;
1033
1034 if (bcn_tb[DCB_BCN_ATTR_ALL])
1035 getall = true;
1036
1037 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1038 if (!getall && !bcn_tb[i])
1039 continue;
1040
1041 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1042 &value_byte);
1043 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1044 if (ret)
1045 goto err_bcn;
1046 }
1047
f4314e81 1048 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1049 if (!getall && !bcn_tb[i])
1050 continue;
1051
1052 netdev->dcbnl_ops->getbcncfg(netdev, i,
1053 &value_integer);
1054 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1055 if (ret)
1056 goto err_bcn;
1057 }
1058
1059 nla_nest_end(dcbnl_skb, bcn_nest);
1060
1061 nlmsg_end(dcbnl_skb, nlh);
1062
1063 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1064 if (ret)
7eaf5077 1065 goto err_out;
859ee3c4
AD		 1066
1067 return 0;
1068
1069err_bcn:
1070 nla_nest_cancel(dcbnl_skb, bcn_nest);
1071nlmsg_failure:
1072err:
858eb711 1073 kfree_skb(dcbnl_skb);
859ee3c4
AD		 1074err_out:
1075 ret = -EINVAL;
1076 return ret;
1077}
1078
1079static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1080 u32 pid, u32 seq, u16 flags)
1081{
1082 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1083 int i;
1084 int ret = -EINVAL;
1085 u8 value_byte;
1086 u32 value_int;
1087
1088 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg
1089 || !netdev->dcbnl_ops->setbcnrp)
1090 return ret;
1091
1092 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1093 tb[DCB_ATTR_BCN],
1094 dcbnl_pfc_up_nest);
1095 if (ret)
1096 goto err;
1097
1098 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1099 if (data[i] == NULL)
1100 continue;
1101 value_byte = nla_get_u8(data[i]);
1102 netdev->dcbnl_ops->setbcnrp(netdev,
1103 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1104 }
1105
f4314e81 1106 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1107 if (data[i] == NULL)
1108 continue;
1109 value_int = nla_get_u32(data[i]);
1110 netdev->dcbnl_ops->setbcncfg(netdev,
1111 i, value_int);
1112 }
1113
1114 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1115 pid, seq, flags);
1116err:
1117 return ret;
1118}
1119
2f90b865
AD		 1120static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1121{
1122 struct net *net = sock_net(skb->sk);
1123 struct net_device *netdev;
1124 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1125 struct nlattr *tb[DCB_ATTR_MAX + 1];
1126 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1127 int ret = -EINVAL;
1128
1129 if (net != &init_net)
1130 return -EINVAL;
1131
1132 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1133 dcbnl_rtnl_policy);
1134 if (ret < 0)
1135 return ret;
1136
1137 if (!tb[DCB_ATTR_IFNAME])
1138 return -EINVAL;
1139
1140 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1141 if (!netdev)
1142 return -EINVAL;
1143
1144 if (!netdev->dcbnl_ops)
1145 goto errout;
1146
1147 switch (dcb->cmd) {
1148 case DCB_CMD_GSTATE:
1149 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1150 nlh->nlmsg_flags);
1151 goto out;
1152 case DCB_CMD_PFC_GCFG:
1153 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1154 nlh->nlmsg_flags);
1155 goto out;
1156 case DCB_CMD_GPERM_HWADDR:
1157 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1158 nlh->nlmsg_flags);
1159 goto out;
1160 case DCB_CMD_PGTX_GCFG:
1161 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1162 nlh->nlmsg_flags);
1163 goto out;
1164 case DCB_CMD_PGRX_GCFG:
1165 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1166 nlh->nlmsg_flags);
1167 goto out;
859ee3c4
AD		 1168 case DCB_CMD_BCN_GCFG:
1169 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1170 nlh->nlmsg_flags);
1171 goto out;
2f90b865
AD		 1172 case DCB_CMD_SSTATE:
1173 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1174 nlh->nlmsg_flags);
1175 goto out;
1176 case DCB_CMD_PFC_SCFG:
1177 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1178 nlh->nlmsg_flags);
1179 goto out;
1180
1181 case DCB_CMD_SET_ALL:
1182 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1183 nlh->nlmsg_flags);
1184 goto out;
1185 case DCB_CMD_PGTX_SCFG:
1186 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1187 nlh->nlmsg_flags);
1188 goto out;
1189 case DCB_CMD_PGRX_SCFG:
1190 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1191 nlh->nlmsg_flags);
1192 goto out;
46132188
AD		 1193 case DCB_CMD_GCAP:
1194 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1195 nlh->nlmsg_flags);
1196 goto out;
33dbabc4
AD		 1197 case DCB_CMD_GNUMTCS:
1198 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1199 nlh->nlmsg_flags);
1200 goto out;
1201 case DCB_CMD_SNUMTCS:
1202 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1203 nlh->nlmsg_flags);
1204 goto out;
0eb3aa9b
AD		 1205 case DCB_CMD_PFC_GSTATE:
1206 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1207 nlh->nlmsg_flags);
1208 goto out;
1209 case DCB_CMD_PFC_SSTATE:
1210 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1211 nlh->nlmsg_flags);
1212 goto out;
859ee3c4
AD		 1213 case DCB_CMD_BCN_SCFG:
1214 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1215 nlh->nlmsg_flags);
1216 goto out;
57949686
YZ		 1217 case DCB_CMD_GAPP:
1218 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1219 nlh->nlmsg_flags);
1220 goto out;
1221 case DCB_CMD_SAPP:
1222 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1223 nlh->nlmsg_flags);
1224 goto out;
2f90b865
AD		 1225 default:
1226 goto errout;
1227 }
1228errout:
1229 ret = -EINVAL;
1230out:
1231 dev_put(netdev);
1232 return ret;
1233}
1234
1235static int __init dcbnl_init(void)
1236{
1237 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
1238 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
1239
1240 return 0;
1241}
1242module_init(dcbnl_init);
1243
1244static void __exit dcbnl_exit(void)
1245{
1246 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1247 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
1248}
1249module_exit(dcbnl_exit);
1250
1251
Clone of davem's net-next-2.6 tree