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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux.git] / net / dcb / dcbnl.c
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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 <[email protected]>
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>
26#include <linux/rtnetlink.h>
27#include <net/sock.h>
28
29/**
30 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
31 * intended to allow network traffic with differing requirements
32 * (highly reliable, no drops vs. best effort vs. low latency) to operate
33 * and co-exist on Ethernet. Current DCB features are:
34 *
35 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
36 * framework for assigning bandwidth guarantees to traffic classes.
37 *
38 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
39 * can work independently for each 802.1p priority.
40 *
41 * Congestion Notification - provides a mechanism for end-to-end congestion
42 * control for protocols which do not have built-in congestion management.
43 *
44 * More information about the emerging standards for these Ethernet features
45 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
46 *
47 * This file implements an rtnetlink interface to allow configuration of DCB
48 * features for capable devices.
49 */
50
51MODULE_AUTHOR("Lucy Liu, <[email protected]>");
7a6b6f51 52MODULE_DESCRIPTION("Data Center Bridging netlink interface");
2f90b865
AD		 53MODULE_LICENSE("GPL");
54
55/**************** DCB attribute policies *************************************/
56
57/* DCB netlink attributes policy */
b54452b0 58static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 59 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
60 [DCB_ATTR_STATE] = {.type = NLA_U8},
61 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
62 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
63 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
2f90b865 64 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 65 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
66 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
67 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 68 [DCB_ATTR_APP] = {.type = NLA_NESTED},
2f90b865
AD		 69};
70
71/* DCB priority flow control to User Priority nested attributes */
b54452b0 72static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
2f90b865
AD		 73 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
74 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
75 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
76 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
77 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
82};
83
84/* DCB priority grouping nested attributes */
b54452b0 85static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
2f90b865
AD		 86 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
87 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
88 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
89 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
90 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
96 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
97 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
98 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
99 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
104};
105
106/* DCB traffic class nested attributes. */
b54452b0 107static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
2f90b865
AD		 108 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
109 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
110 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
111 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
112 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
113};
114
46132188 115/* DCB capabilities nested attributes. */
b54452b0 116static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
46132188
AD		 117 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
118 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
119 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
120 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
121 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
122 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
125};
2f90b865 126
33dbabc4 127/* DCB capabilities nested attributes. */
b54452b0 128static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
33dbabc4
AD		 129 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
130 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
131 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
132};
133
859ee3c4 134/* DCB BCN nested attributes. */
b54452b0 135static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
859ee3c4
AD		 136 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
137 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
138 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
139 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
140 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
141 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
f4314e81
DS		 145 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
146 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 147 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
148 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
149 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
150 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
152 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
161};
162
6fa382af 163/* DCB APP nested attributes. */
b54452b0 164static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
6fa382af
YZ		 165 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
166 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
167 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
168};
169
2f90b865
AD		 170/* standard netlink reply call */
171static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
172 u32 seq, u16 flags)
173{
174 struct sk_buff *dcbnl_skb;
175 struct dcbmsg *dcb;
176 struct nlmsghdr *nlh;
177 int ret = -EINVAL;
178
179 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
180 if (!dcbnl_skb)
181 return ret;
182
183 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
184
185 dcb = NLMSG_DATA(nlh);
186 dcb->dcb_family = AF_UNSPEC;
187 dcb->cmd = cmd;
188 dcb->dcb_pad = 0;
189
190 ret = nla_put_u8(dcbnl_skb, attr, value);
191 if (ret)
192 goto err;
193
194 /* end the message, assign the nlmsg_len. */
195 nlmsg_end(dcbnl_skb, nlh);
196 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
197 if (ret)
7eaf5077 198 return -EINVAL;
2f90b865
AD		 199
200 return 0;
201nlmsg_failure:
202err:
858eb711 203 kfree_skb(dcbnl_skb);
2f90b865
AD		 204 return ret;
205}
206
207static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
208 u32 pid, u32 seq, u16 flags)
209{
210 int ret = -EINVAL;
211
212 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
213 if (!netdev->dcbnl_ops->getstate)
214 return ret;
215
216 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
217 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
218
219 return ret;
220}
221
222static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
223 u32 pid, u32 seq, u16 flags)
224{
225 struct sk_buff *dcbnl_skb;
226 struct nlmsghdr *nlh;
227 struct dcbmsg *dcb;
228 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
229 u8 value;
230 int ret = -EINVAL;
231 int i;
232 int getall = 0;
233
234 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
235 return ret;
236
237 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
238 tb[DCB_ATTR_PFC_CFG],
239 dcbnl_pfc_up_nest);
240 if (ret)
241 goto err_out;
242
243 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
244 if (!dcbnl_skb)
245 goto err_out;
246
247 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
248
249 dcb = NLMSG_DATA(nlh);
250 dcb->dcb_family = AF_UNSPEC;
251 dcb->cmd = DCB_CMD_PFC_GCFG;
252
253 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
254 if (!nest)
255 goto err;
256
257 if (data[DCB_PFC_UP_ATTR_ALL])
258 getall = 1;
259
260 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
261 if (!getall && !data[i])
262 continue;
263
264 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
265 &value);
266 ret = nla_put_u8(dcbnl_skb, i, value);
267
268 if (ret) {
269 nla_nest_cancel(dcbnl_skb, nest);
270 goto err;
271 }
272 }
273 nla_nest_end(dcbnl_skb, nest);
274
275 nlmsg_end(dcbnl_skb, nlh);
276
277 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
278 if (ret)
7eaf5077 279 goto err_out;
2f90b865
AD		 280
281 return 0;
282nlmsg_failure:
283err:
858eb711 284 kfree_skb(dcbnl_skb);
2f90b865
AD		 285err_out:
286 return -EINVAL;
287}
288
289static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
290 u32 pid, u32 seq, u16 flags)
291{
292 struct sk_buff *dcbnl_skb;
293 struct nlmsghdr *nlh;
294 struct dcbmsg *dcb;
295 u8 perm_addr[MAX_ADDR_LEN];
296 int ret = -EINVAL;
297
298 if (!netdev->dcbnl_ops->getpermhwaddr)
299 return ret;
300
301 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
302 if (!dcbnl_skb)
303 goto err_out;
304
305 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
306
307 dcb = NLMSG_DATA(nlh);
308 dcb->dcb_family = AF_UNSPEC;
309 dcb->cmd = DCB_CMD_GPERM_HWADDR;
310
311 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
312
313 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
314 perm_addr);
315
316 nlmsg_end(dcbnl_skb, nlh);
317
318 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
319 if (ret)
7eaf5077 320 goto err_out;
2f90b865
AD		 321
322 return 0;
323
324nlmsg_failure:
858eb711 325 kfree_skb(dcbnl_skb);
2f90b865
AD		 326err_out:
327 return -EINVAL;
328}
329
46132188
AD		 330static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
331 u32 pid, u32 seq, u16 flags)
332{
333 struct sk_buff *dcbnl_skb;
334 struct nlmsghdr *nlh;
335 struct dcbmsg *dcb;
336 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
337 u8 value;
338 int ret = -EINVAL;
339 int i;
340 int getall = 0;
341
342 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
343 return ret;
344
345 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
346 dcbnl_cap_nest);
347 if (ret)
348 goto err_out;
349
350 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
351 if (!dcbnl_skb)
352 goto err_out;
353
354 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
355
356 dcb = NLMSG_DATA(nlh);
357 dcb->dcb_family = AF_UNSPEC;
358 dcb->cmd = DCB_CMD_GCAP;
359
360 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
361 if (!nest)
362 goto err;
363
364 if (data[DCB_CAP_ATTR_ALL])
365 getall = 1;
366
367 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
368 if (!getall && !data[i])
369 continue;
370
371 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
372 ret = nla_put_u8(dcbnl_skb, i, value);
373
374 if (ret) {
375 nla_nest_cancel(dcbnl_skb, nest);
376 goto err;
377 }
378 }
379 }
380 nla_nest_end(dcbnl_skb, nest);
381
382 nlmsg_end(dcbnl_skb, nlh);
383
384 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
385 if (ret)
7eaf5077 386 goto err_out;
46132188
AD		 387
388 return 0;
389nlmsg_failure:
390err:
858eb711 391 kfree_skb(dcbnl_skb);
46132188
AD		 392err_out:
393 return -EINVAL;
394}
395
33dbabc4
AD		 396static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
397 u32 pid, u32 seq, u16 flags)
398{
399 struct sk_buff *dcbnl_skb;
400 struct nlmsghdr *nlh;
401 struct dcbmsg *dcb;
402 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
403 u8 value;
404 int ret = -EINVAL;
405 int i;
406 int getall = 0;
407
408 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
409 return ret;
410
411 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
412 dcbnl_numtcs_nest);
413 if (ret) {
414 ret = -EINVAL;
415 goto err_out;
416 }
417
418 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
419 if (!dcbnl_skb) {
420 ret = -EINVAL;
421 goto err_out;
422 }
423
424 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
425
426 dcb = NLMSG_DATA(nlh);
427 dcb->dcb_family = AF_UNSPEC;
428 dcb->cmd = DCB_CMD_GNUMTCS;
429
430 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
431 if (!nest) {
432 ret = -EINVAL;
433 goto err;
434 }
435
436 if (data[DCB_NUMTCS_ATTR_ALL])
437 getall = 1;
438
439 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
440 if (!getall && !data[i])
441 continue;
442
443 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
444 if (!ret) {
445 ret = nla_put_u8(dcbnl_skb, i, value);
446
447 if (ret) {
448 nla_nest_cancel(dcbnl_skb, nest);
449 ret = -EINVAL;
450 goto err;
451 }
452 } else {
453 goto err;
454 }
455 }
456 nla_nest_end(dcbnl_skb, nest);
457
458 nlmsg_end(dcbnl_skb, nlh);
459
460 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
461 if (ret) {
462 ret = -EINVAL;
7eaf5077 463 goto err_out;
33dbabc4
AD		 464 }
465
466 return 0;
467nlmsg_failure:
468err:
858eb711 469 kfree_skb(dcbnl_skb);
33dbabc4
AD		 470err_out:
471 return ret;
472}
473
474static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
475 u32 pid, u32 seq, u16 flags)
476{
477 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
478 int ret = -EINVAL;
479 u8 value;
480 int i;
481
8b124a8e 482 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
33dbabc4
AD		 483 return ret;
484
485 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
486 dcbnl_numtcs_nest);
487
488 if (ret) {
489 ret = -EINVAL;
490 goto err;
491 }
492
493 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
494 if (data[i] == NULL)
495 continue;
496
497 value = nla_get_u8(data[i]);
498
499 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
500
501 if (ret)
502 goto operr;
503 }
504
505operr:
506 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
507 DCB_ATTR_NUMTCS, pid, seq, flags);
508
509err:
510 return ret;
511}
512
0eb3aa9b
AD		 513static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
514 u32 pid, u32 seq, u16 flags)
515{
516 int ret = -EINVAL;
517
518 if (!netdev->dcbnl_ops->getpfcstate)
519 return ret;
520
521 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
522 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
523 pid, seq, flags);
524
525 return ret;
526}
527
528static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
529 u32 pid, u32 seq, u16 flags)
530{
531 int ret = -EINVAL;
532 u8 value;
533
534 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
535 return ret;
536
537 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
538
539 netdev->dcbnl_ops->setpfcstate(netdev, value);
540
541 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
542 pid, seq, flags);
543
544 return ret;
545}
546
57949686
YZ		 547static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
548 u32 pid, u32 seq, u16 flags)
549{
550 struct sk_buff *dcbnl_skb;
551 struct nlmsghdr *nlh;
552 struct dcbmsg *dcb;
553 struct nlattr *app_nest;
554 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
555 u16 id;
556 u8 up, idtype;
557 int ret = -EINVAL;
558
559 if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->getapp)
560 goto out;
561
562 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
563 dcbnl_app_nest);
564 if (ret)
565 goto out;
566
567 ret = -EINVAL;
568 /* all must be non-null */
569 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
570 (!app_tb[DCB_APP_ATTR_ID]))
571 goto out;
572
573 /* either by eth type or by socket number */
574 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
575 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
576 (idtype != DCB_APP_IDTYPE_PORTNUM))
577 goto out;
578
579 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
580 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
581
582 /* send this back */
583 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
584 if (!dcbnl_skb)
585 goto out;
586
587 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
588 dcb = NLMSG_DATA(nlh);
589 dcb->dcb_family = AF_UNSPEC;
590 dcb->cmd = DCB_CMD_GAPP;
591
592 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
593 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
594 if (ret)
595 goto out_cancel;
596
597 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
598 if (ret)
599 goto out_cancel;
600
601 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
602 if (ret)
603 goto out_cancel;
604
605 nla_nest_end(dcbnl_skb, app_nest);
606 nlmsg_end(dcbnl_skb, nlh);
607
608 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
609 if (ret)
610 goto nlmsg_failure;
611
612 goto out;
613
614out_cancel:
615 nla_nest_cancel(dcbnl_skb, app_nest);
616nlmsg_failure:
617 kfree_skb(dcbnl_skb);
618out:
619 return ret;
620}
621
622static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
623 u32 pid, u32 seq, u16 flags)
624{
625 int ret = -EINVAL;
626 u16 id;
627 u8 up, idtype;
628 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
629
630 if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->setapp)
631 goto out;
632
633 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
634 dcbnl_app_nest);
635 if (ret)
636 goto out;
637
638 ret = -EINVAL;
639 /* all must be non-null */
640 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
641 (!app_tb[DCB_APP_ATTR_ID]) ||
642 (!app_tb[DCB_APP_ATTR_PRIORITY]))
643 goto out;
644
645 /* either by eth type or by socket number */
646 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
647 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
648 (idtype != DCB_APP_IDTYPE_PORTNUM))
649 goto out;
650
651 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
652 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
653
654 ret = dcbnl_reply(netdev->dcbnl_ops->setapp(netdev, idtype, id, up),
655 RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
656 pid, seq, flags);
657out:
658 return ret;
659}
660
2f90b865
AD		 661static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
662 u32 pid, u32 seq, u16 flags, int dir)
663{
664 struct sk_buff *dcbnl_skb;
665 struct nlmsghdr *nlh;
666 struct dcbmsg *dcb;
667 struct nlattr *pg_nest, *param_nest, *data;
668 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
669 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
670 u8 prio, pgid, tc_pct, up_map;
671 int ret = -EINVAL;
672 int getall = 0;
673 int i;
674
675 if (!tb[DCB_ATTR_PG_CFG] ||
676 !netdev->dcbnl_ops->getpgtccfgtx ||
677 !netdev->dcbnl_ops->getpgtccfgrx ||
678 !netdev->dcbnl_ops->getpgbwgcfgtx ||
679 !netdev->dcbnl_ops->getpgbwgcfgrx)
680 return ret;
681
682 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
683 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
684
685 if (ret)
686 goto err_out;
687
688 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
689 if (!dcbnl_skb)
690 goto err_out;
691
692 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
693
694 dcb = NLMSG_DATA(nlh);
695 dcb->dcb_family = AF_UNSPEC;
696 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
697
698 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
699 if (!pg_nest)
700 goto err;
701
702 if (pg_tb[DCB_PG_ATTR_TC_ALL])
703 getall = 1;
704
705 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
706 if (!getall && !pg_tb[i])
707 continue;
708
709 if (pg_tb[DCB_PG_ATTR_TC_ALL])
710 data = pg_tb[DCB_PG_ATTR_TC_ALL];
711 else
712 data = pg_tb[i];
713 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
714 data, dcbnl_tc_param_nest);
715 if (ret)
716 goto err_pg;
717
718 param_nest = nla_nest_start(dcbnl_skb, i);
719 if (!param_nest)
720 goto err_pg;
721
722 pgid = DCB_ATTR_VALUE_UNDEFINED;
723 prio = DCB_ATTR_VALUE_UNDEFINED;
724 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
725 up_map = DCB_ATTR_VALUE_UNDEFINED;
726
727 if (dir) {
728 /* Rx */
729 netdev->dcbnl_ops->getpgtccfgrx(netdev,
730 i - DCB_PG_ATTR_TC_0, &prio,
731 &pgid, &tc_pct, &up_map);
732 } else {
733 /* Tx */
734 netdev->dcbnl_ops->getpgtccfgtx(netdev,
735 i - DCB_PG_ATTR_TC_0, &prio,
736 &pgid, &tc_pct, &up_map);
737 }
738
739 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
740 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
741 ret = nla_put_u8(dcbnl_skb,
742 DCB_TC_ATTR_PARAM_PGID, pgid);
743 if (ret)
744 goto err_param;
745 }
746 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
747 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
748 ret = nla_put_u8(dcbnl_skb,
749 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
750 if (ret)
751 goto err_param;
752 }
753 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
754 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
755 ret = nla_put_u8(dcbnl_skb,
756 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
757 if (ret)
758 goto err_param;
759 }
760 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
761 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
762 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
763 tc_pct);
764 if (ret)
765 goto err_param;
766 }
767 nla_nest_end(dcbnl_skb, param_nest);
768 }
769
770 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
771 getall = 1;
772 else
773 getall = 0;
774
775 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
776 if (!getall && !pg_tb[i])
777 continue;
778
779 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
780
781 if (dir) {
782 /* Rx */
783 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
784 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
785 } else {
786 /* Tx */
787 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
788 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
789 }
790 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
791
792 if (ret)
793 goto err_pg;
794 }
795
796 nla_nest_end(dcbnl_skb, pg_nest);
797
798 nlmsg_end(dcbnl_skb, nlh);
799
800 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
801 if (ret)
7eaf5077 802 goto err_out;
2f90b865
AD		 803
804 return 0;
805
806err_param:
807 nla_nest_cancel(dcbnl_skb, param_nest);
808err_pg:
809 nla_nest_cancel(dcbnl_skb, pg_nest);
810nlmsg_failure:
811err:
858eb711 812 kfree_skb(dcbnl_skb);
2f90b865
AD		 813err_out:
814 ret = -EINVAL;
815 return ret;
816}
817
818static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
819 u32 pid, u32 seq, u16 flags)
820{
821 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
822}
823
824static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
825 u32 pid, u32 seq, u16 flags)
826{
827 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
828}
829
830static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
831 u32 pid, u32 seq, u16 flags)
832{
833 int ret = -EINVAL;
834 u8 value;
835
836 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
837 return ret;
838
839 value = nla_get_u8(tb[DCB_ATTR_STATE]);
840
1486a61e
DS		 841 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
842 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
2f90b865
AD		 843 pid, seq, flags);
844
845 return ret;
846}
847
848static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
849 u32 pid, u32 seq, u16 flags)
850{
851 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
852 int i;
853 int ret = -EINVAL;
854 u8 value;
855
856 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
857 return ret;
858
859 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
860 tb[DCB_ATTR_PFC_CFG],
861 dcbnl_pfc_up_nest);
862 if (ret)
863 goto err;
864
865 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
866 if (data[i] == NULL)
867 continue;
868 value = nla_get_u8(data[i]);
869 netdev->dcbnl_ops->setpfccfg(netdev,
870 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
871 }
872
873 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
874 pid, seq, flags);
875err:
876 return ret;
877}
878
879static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
880 u32 pid, u32 seq, u16 flags)
881{
882 int ret = -EINVAL;
883
884 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
885 return ret;
886
887 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
888 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
889
890 return ret;
891}
892
893static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
894 u32 pid, u32 seq, u16 flags, int dir)
895{
896 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
897 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
898 int ret = -EINVAL;
899 int i;
900 u8 pgid;
901 u8 up_map;
902 u8 prio;
903 u8 tc_pct;
904
905 if (!tb[DCB_ATTR_PG_CFG] ||
906 !netdev->dcbnl_ops->setpgtccfgtx ||
907 !netdev->dcbnl_ops->setpgtccfgrx ||
908 !netdev->dcbnl_ops->setpgbwgcfgtx ||
909 !netdev->dcbnl_ops->setpgbwgcfgrx)
910 return ret;
911
912 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
913 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
914 if (ret)
915 goto err;
916
917 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
918 if (!pg_tb[i])
919 continue;
920
921 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
922 pg_tb[i], dcbnl_tc_param_nest);
923 if (ret)
924 goto err;
925
926 pgid = DCB_ATTR_VALUE_UNDEFINED;
927 prio = DCB_ATTR_VALUE_UNDEFINED;
928 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
929 up_map = DCB_ATTR_VALUE_UNDEFINED;
930
931 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
932 prio =
933 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
934
935 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
936 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
937
938 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
939 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
940
941 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
942 up_map =
943 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
944
945 /* dir: Tx = 0, Rx = 1 */
946 if (dir) {
947 /* Rx */
948 netdev->dcbnl_ops->setpgtccfgrx(netdev,
949 i - DCB_PG_ATTR_TC_0,
950 prio, pgid, tc_pct, up_map);
951 } else {
952 /* Tx */
953 netdev->dcbnl_ops->setpgtccfgtx(netdev,
954 i - DCB_PG_ATTR_TC_0,
955 prio, pgid, tc_pct, up_map);
956 }
957 }
958
959 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
960 if (!pg_tb[i])
961 continue;
962
963 tc_pct = nla_get_u8(pg_tb[i]);
964
965 /* dir: Tx = 0, Rx = 1 */
966 if (dir) {
967 /* Rx */
968 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
969 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
970 } else {
971 /* Tx */
972 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
973 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
974 }
975 }
976
977 ret = dcbnl_reply(0, RTM_SETDCB,
978 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
979 DCB_ATTR_PG_CFG, pid, seq, flags);
980
981err:
982 return ret;
983}
984
985static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
986 u32 pid, u32 seq, u16 flags)
987{
988 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
989}
990
991static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
992 u32 pid, u32 seq, u16 flags)
993{
994 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
995}
996
859ee3c4
AD		 997static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
998 u32 pid, u32 seq, u16 flags)
999{
1000 struct sk_buff *dcbnl_skb;
1001 struct nlmsghdr *nlh;
1002 struct dcbmsg *dcb;
1003 struct nlattr *bcn_nest;
1004 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1005 u8 value_byte;
1006 u32 value_integer;
1007 int ret = -EINVAL;
1008 bool getall = false;
1009 int i;
1010
1011 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1012 !netdev->dcbnl_ops->getbcncfg)
1013 return ret;
1014
1015 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1016 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1017
1018 if (ret)
1019 goto err_out;
1020
1021 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1022 if (!dcbnl_skb)
1023 goto err_out;
1024
1025 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1026
1027 dcb = NLMSG_DATA(nlh);
1028 dcb->dcb_family = AF_UNSPEC;
1029 dcb->cmd = DCB_CMD_BCN_GCFG;
1030
1031 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1032 if (!bcn_nest)
1033 goto err;
1034
1035 if (bcn_tb[DCB_BCN_ATTR_ALL])
1036 getall = true;
1037
1038 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1039 if (!getall && !bcn_tb[i])
1040 continue;
1041
1042 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1043 &value_byte);
1044 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1045 if (ret)
1046 goto err_bcn;
1047 }
1048
f4314e81 1049 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1050 if (!getall && !bcn_tb[i])
1051 continue;
1052
1053 netdev->dcbnl_ops->getbcncfg(netdev, i,
1054 &value_integer);
1055 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1056 if (ret)
1057 goto err_bcn;
1058 }
1059
1060 nla_nest_end(dcbnl_skb, bcn_nest);
1061
1062 nlmsg_end(dcbnl_skb, nlh);
1063
1064 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1065 if (ret)
7eaf5077 1066 goto err_out;
859ee3c4
AD		 1067
1068 return 0;
1069
1070err_bcn:
1071 nla_nest_cancel(dcbnl_skb, bcn_nest);
1072nlmsg_failure:
1073err:
858eb711 1074 kfree_skb(dcbnl_skb);
859ee3c4
AD		 1075err_out:
1076 ret = -EINVAL;
1077 return ret;
1078}
1079
1080static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1081 u32 pid, u32 seq, u16 flags)
1082{
1083 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1084 int i;
1085 int ret = -EINVAL;
1086 u8 value_byte;
1087 u32 value_int;
1088
f64f9e71
JP		 1089 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1090 !netdev->dcbnl_ops->setbcnrp)
859ee3c4
AD		 1091 return ret;
1092
1093 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1094 tb[DCB_ATTR_BCN],
1095 dcbnl_pfc_up_nest);
1096 if (ret)
1097 goto err;
1098
1099 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1100 if (data[i] == NULL)
1101 continue;
1102 value_byte = nla_get_u8(data[i]);
1103 netdev->dcbnl_ops->setbcnrp(netdev,
1104 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1105 }
1106
f4314e81 1107 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1108 if (data[i] == NULL)
1109 continue;
1110 value_int = nla_get_u32(data[i]);
1111 netdev->dcbnl_ops->setbcncfg(netdev,
1112 i, value_int);
1113 }
1114
1115 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1116 pid, seq, flags);
1117err:
1118 return ret;
1119}
1120
2f90b865
AD		 1121static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1122{
1123 struct net *net = sock_net(skb->sk);
1124 struct net_device *netdev;
1125 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1126 struct nlattr *tb[DCB_ATTR_MAX + 1];
1127 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1128 int ret = -EINVAL;
1129
09ad9bc7 1130 if (!net_eq(net, &init_net))
2f90b865
AD		 1131 return -EINVAL;
1132
1133 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1134 dcbnl_rtnl_policy);
1135 if (ret < 0)
1136 return ret;
1137
1138 if (!tb[DCB_ATTR_IFNAME])
1139 return -EINVAL;
1140
1141 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1142 if (!netdev)
1143 return -EINVAL;
1144
1145 if (!netdev->dcbnl_ops)
1146 goto errout;
1147
1148 switch (dcb->cmd) {
1149 case DCB_CMD_GSTATE:
1150 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1151 nlh->nlmsg_flags);
1152 goto out;
1153 case DCB_CMD_PFC_GCFG:
1154 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1155 nlh->nlmsg_flags);
1156 goto out;
1157 case DCB_CMD_GPERM_HWADDR:
1158 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1159 nlh->nlmsg_flags);
1160 goto out;
1161 case DCB_CMD_PGTX_GCFG:
1162 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1163 nlh->nlmsg_flags);
1164 goto out;
1165 case DCB_CMD_PGRX_GCFG:
1166 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1167 nlh->nlmsg_flags);
1168 goto out;
859ee3c4
AD		 1169 case DCB_CMD_BCN_GCFG:
1170 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1171 nlh->nlmsg_flags);
1172 goto out;
2f90b865
AD		 1173 case DCB_CMD_SSTATE:
1174 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1175 nlh->nlmsg_flags);
1176 goto out;
1177 case DCB_CMD_PFC_SCFG:
1178 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1179 nlh->nlmsg_flags);
1180 goto out;
1181
1182 case DCB_CMD_SET_ALL:
1183 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1184 nlh->nlmsg_flags);
1185 goto out;
1186 case DCB_CMD_PGTX_SCFG:
1187 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1188 nlh->nlmsg_flags);
1189 goto out;
1190 case DCB_CMD_PGRX_SCFG:
1191 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1192 nlh->nlmsg_flags);
1193 goto out;
46132188
AD		 1194 case DCB_CMD_GCAP:
1195 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1196 nlh->nlmsg_flags);
1197 goto out;
33dbabc4
AD		 1198 case DCB_CMD_GNUMTCS:
1199 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1200 nlh->nlmsg_flags);
1201 goto out;
1202 case DCB_CMD_SNUMTCS:
1203 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1204 nlh->nlmsg_flags);
1205 goto out;
0eb3aa9b
AD		 1206 case DCB_CMD_PFC_GSTATE:
1207 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1208 nlh->nlmsg_flags);
1209 goto out;
1210 case DCB_CMD_PFC_SSTATE:
1211 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1212 nlh->nlmsg_flags);
1213 goto out;
859ee3c4
AD		 1214 case DCB_CMD_BCN_SCFG:
1215 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1216 nlh->nlmsg_flags);
1217 goto out;
57949686
YZ		 1218 case DCB_CMD_GAPP:
1219 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1220 nlh->nlmsg_flags);
1221 goto out;
1222 case DCB_CMD_SAPP:
1223 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1224 nlh->nlmsg_flags);
1225 goto out;
2f90b865
AD		 1226 default:
1227 goto errout;
1228 }
1229errout:
1230 ret = -EINVAL;
1231out:
1232 dev_put(netdev);
1233 return ret;
1234}
1235
1236static int __init dcbnl_init(void)
1237{
1238 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
1239 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
1240
1241 return 0;
1242}
1243module_init(dcbnl_init);
1244
1245static void __exit dcbnl_exit(void)
1246{
1247 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1248 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
1249}
1250module_exit(dcbnl_exit);
1251
1252
Empty description
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