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dcb: Add dcb_ieee_getapp_mask() for drivers to query APP settings
[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
dc6ed1df
SR		 1169static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
1170 int app_nested_type, int app_info_type,
1171 int app_entry_type)
eed84713
SR		 1172{
1173 struct dcb_peer_app_info info;
1174 struct dcb_app *table = NULL;
1175 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1176 u16 app_count;
1177 int err;
1178
1179
1180 /**
1181 * retrieve the peer app configuration form the driver. If the driver
1182 * handlers fail exit without doing anything
1183 */
1184 err = ops->peer_getappinfo(netdev, &info, &app_count);
1185 if (!err && app_count) {
1186 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
1187 if (!table)
1188 return -ENOMEM;
1189
1190 err = ops->peer_getapptable(netdev, table);
1191 }
1192
1193 if (!err) {
1194 u16 i;
1195 struct nlattr *app;
1196
1197 /**
1198 * build the message, from here on the only possible failure
1199 * is due to the skb size
1200 */
1201 err = -EMSGSIZE;
1202
dc6ed1df 1203 app = nla_nest_start(skb, app_nested_type);
eed84713
SR		 1204 if (!app)
1205 goto nla_put_failure;
1206
dc6ed1df
SR		 1207 if (app_info_type)
1208 NLA_PUT(skb, app_info_type, sizeof(info), &info);
1209
eed84713 1210 for (i = 0; i < app_count; i++)
dc6ed1df 1211 NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app),
eed84713
SR		 1212 &table[i]);
1213
1214 nla_nest_end(skb, app);
1215 }
1216 err = 0;
1217
1218nla_put_failure:
1219 kfree(table);
1220 return err;
1221}
3e29027a
JF		 1222
1223/* Handle IEEE 802.1Qaz GET commands. */
314b4778 1224static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
3e29027a 1225{
9ab933ab
JF		 1226 struct nlattr *ieee, *app;
1227 struct dcb_app_type *itr;
3e29027a 1228 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
c7797baf 1229 int dcbx;
314b4778 1230 int err = -EMSGSIZE;
3e29027a
JF		 1231
1232 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1233
1234 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1235 if (!ieee)
1236 goto nla_put_failure;
1237
1238 if (ops->ieee_getets) {
1239 struct ieee_ets ets;
1240 err = ops->ieee_getets(netdev, &ets);
1241 if (!err)
1242 NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
1243 }
1244
1245 if (ops->ieee_getpfc) {
1246 struct ieee_pfc pfc;
1247 err = ops->ieee_getpfc(netdev, &pfc);
1248 if (!err)
1249 NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
1250 }
1251
9ab933ab
JF		 1252 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1253 if (!app)
1254 goto nla_put_failure;
1255
1256 spin_lock(&dcb_lock);
1257 list_for_each_entry(itr, &dcb_app_list, list) {
70bfa2d2
DC		 1258 if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
1259 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1260 &itr->app);
1261 if (err) {
1262 spin_unlock(&dcb_lock);
1263 goto nla_put_failure;
1264 }
1265 }
9ab933ab 1266 }
c7797baf
JF		 1267
1268 if (netdev->dcbnl_ops->getdcbx)
1269 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1270 else
1271 dcbx = -EOPNOTSUPP;
1272
9ab933ab
JF		 1273 spin_unlock(&dcb_lock);
1274 nla_nest_end(skb, app);
1275
eed84713
SR		 1276 /* get peer info if available */
1277 if (ops->ieee_peer_getets) {
1278 struct ieee_ets ets;
1279 err = ops->ieee_peer_getets(netdev, &ets);
1280 if (!err)
1281 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
1282 }
1283
1284 if (ops->ieee_peer_getpfc) {
1285 struct ieee_pfc pfc;
1286 err = ops->ieee_peer_getpfc(netdev, &pfc);
1287 if (!err)
1288 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
1289 }
1290
1291 if (ops->peer_getappinfo && ops->peer_getapptable) {
dc6ed1df
SR		 1292 err = dcbnl_build_peer_app(netdev, skb,
1293 DCB_ATTR_IEEE_PEER_APP,
1294 DCB_ATTR_IEEE_APP_UNSPEC,
1295 DCB_ATTR_IEEE_APP);
eed84713
SR		 1296 if (err)
1297 goto nla_put_failure;
1298 }
1299
3e29027a 1300 nla_nest_end(skb, ieee);
c7797baf
JF		 1301 if (dcbx >= 0) {
1302 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1303 if (err)
1304 goto nla_put_failure;
1305 }
3e29027a 1306
314b4778
JF		 1307 return 0;
1308
3e29027a 1309nla_put_failure:
314b4778 1310 return err;
3e29027a
JF		 1311}
1312
314b4778
JF		 1313int dcbnl_notify(struct net_device *dev, int event, int cmd,
1314 u32 seq, u32 pid)
1315{
1316 struct net *net = dev_net(dev);
1317 struct sk_buff *skb;
1318 struct nlmsghdr *nlh;
1319 struct dcbmsg *dcb;
1320 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1321 int err;
1322
1323 if (!ops)
1324 return -EOPNOTSUPP;
1325
1326 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1327 if (!skb)
1328 return -ENOBUFS;
1329
1330 nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0);
1331 if (nlh == NULL) {
1332 kfree(skb);
1333 return -EMSGSIZE;
1334 }
1335
1336 dcb = NLMSG_DATA(nlh);
1337 dcb->dcb_family = AF_UNSPEC;
1338 dcb->cmd = cmd;
1339
1340 err = dcbnl_ieee_fill(skb, dev);
1341 if (err < 0) {
1342 /* Report error to broadcast listeners */
1343 nlmsg_cancel(skb, nlh);
1344 kfree_skb(skb);
1345 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1346 } else {
1347 /* End nlmsg and notify broadcast listeners */
1348 nlmsg_end(skb, nlh);
1349 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1350 }
1351
1352 return err;
1353}
1354EXPORT_SYMBOL(dcbnl_notify);
1355
1356/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1357 * be completed the entire msg is aborted and error value is returned.
1358 * No attempt is made to reconcile the case where only part of the
1359 * cmd can be completed.
1360 */
1361static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1362 u32 pid, u32 seq, u16 flags)
1363{
1364 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1365 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1366 int err = -EOPNOTSUPP;
1367
1368 if (!ops)
1369 return err;
1370
1371 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1372 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1373 if (err)
1374 return err;
1375
1376 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1377 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1378 err = ops->ieee_setets(netdev, ets);
1379 if (err)
1380 goto err;
1381 }
1382
1383 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1384 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1385 err = ops->ieee_setpfc(netdev, pfc);
1386 if (err)
1387 goto err;
1388 }
1389
1390 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1391 struct nlattr *attr;
1392 int rem;
1393
1394 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1395 struct dcb_app *app_data;
1396 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1397 continue;
1398 app_data = nla_data(attr);
1399 if (ops->ieee_setapp)
1400 err = ops->ieee_setapp(netdev, app_data);
1401 else
b6db2174 1402 err = dcb_ieee_setapp(netdev, app_data);
314b4778
JF		 1403 if (err)
1404 goto err;
1405 }
1406 }
1407
1408err:
1409 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1410 pid, seq, flags);
1411 dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
1412 return err;
1413}
1414
1415static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1416 u32 pid, u32 seq, u16 flags)
1417{
1418 struct net *net = dev_net(netdev);
1419 struct sk_buff *skb;
1420 struct nlmsghdr *nlh;
1421 struct dcbmsg *dcb;
1422 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1423 int err;
1424
1425 if (!ops)
1426 return -EOPNOTSUPP;
1427
1428 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1429 if (!skb)
1430 return -ENOBUFS;
1431
1432 nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1433 if (nlh == NULL) {
1434 kfree(skb);
1435 return -EMSGSIZE;
1436 }
1437
1438 dcb = NLMSG_DATA(nlh);
1439 dcb->dcb_family = AF_UNSPEC;
1440 dcb->cmd = DCB_CMD_IEEE_GET;
1441
1442 err = dcbnl_ieee_fill(skb, netdev);
1443
1444 if (err < 0) {
1445 nlmsg_cancel(skb, nlh);
1446 kfree_skb(skb);
1447 } else {
1448 nlmsg_end(skb, nlh);
1449 err = rtnl_unicast(skb, net, pid);
1450 }
1451
1452 return err;
1453}
f9ae7e4b
JF		 1454
1455static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb,
1456 u32 pid, u32 seq, u16 flags)
1457{
1458 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1459 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1460 int err = -EOPNOTSUPP;
1461
1462 if (!ops)
1463 return -EOPNOTSUPP;
1464
1465 if (!tb[DCB_ATTR_IEEE])
1466 return -EINVAL;
1467
1468 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1469 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1470 if (err)
1471 return err;
1472
1473 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1474 struct nlattr *attr;
1475 int rem;
1476
1477 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1478 struct dcb_app *app_data;
1479
1480 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1481 continue;
1482 app_data = nla_data(attr);
1483 if (ops->ieee_delapp)
1484 err = ops->ieee_delapp(netdev, app_data);
1485 else
1486 err = dcb_ieee_delapp(netdev, app_data);
1487 if (err)
1488 goto err;
1489 }
1490 }
1491
1492err:
1493 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE,
1494 pid, seq, flags);
1495 dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
1496 return err;
1497}
1498
1499
6241b625
SR		 1500/* DCBX configuration */
1501static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1502 u32 pid, u32 seq, u16 flags)
1503{
7f891cf1 1504 int ret;
6241b625
SR		 1505
1506 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1507 return -EOPNOTSUPP;
6241b625
SR		 1508
1509 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1510 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1511
1512 return ret;
1513}
1514
1515static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1516 u32 pid, u32 seq, u16 flags)
1517{
7f891cf1 1518 int ret;
6241b625
SR		 1519 u8 value;
1520
7f891cf1
SR		 1521 if (!netdev->dcbnl_ops->setdcbx)
1522 return -EOPNOTSUPP;
1523
1524 if (!tb[DCB_ATTR_DCBX])
1525 return -EINVAL;
6241b625
SR		 1526
1527 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1528
1529 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1530 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1531 pid, seq, flags);
1532
1533 return ret;
1534}
1535
ea45fe4e
SR		 1536static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1537 u32 pid, u32 seq, u16 flags)
1538{
1539 struct sk_buff *dcbnl_skb;
1540 struct nlmsghdr *nlh;
1541 struct dcbmsg *dcb;
1542 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1543 u8 value;
7f891cf1 1544 int ret, i;
ea45fe4e
SR		 1545 int getall = 0;
1546
7f891cf1
SR		 1547 if (!netdev->dcbnl_ops->getfeatcfg)
1548 return -EOPNOTSUPP;
1549
1550 if (!tb[DCB_ATTR_FEATCFG])
1551 return -EINVAL;
ea45fe4e
SR		 1552
1553 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1554 dcbnl_featcfg_nest);
7f891cf1 1555 if (ret)
ea45fe4e 1556 goto err_out;
ea45fe4e
SR		 1557
1558 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1559 if (!dcbnl_skb) {
7f891cf1 1560 ret = -ENOBUFS;
ea45fe4e
SR		 1561 goto err_out;
1562 }
1563
1564 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1565
1566 dcb = NLMSG_DATA(nlh);
1567 dcb->dcb_family = AF_UNSPEC;
1568 dcb->cmd = DCB_CMD_GFEATCFG;
1569
1570 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1571 if (!nest) {
7f891cf1
SR		 1572 ret = -EMSGSIZE;
1573 goto nla_put_failure;
ea45fe4e
SR		 1574 }
1575
1576 if (data[DCB_FEATCFG_ATTR_ALL])
1577 getall = 1;
1578
1579 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1580 if (!getall && !data[i])
1581 continue;
1582
1583 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1584 if (!ret)
ea45fe4e
SR		 1585 ret = nla_put_u8(dcbnl_skb, i, value);
1586
7f891cf1
SR		 1587 if (ret) {
1588 nla_nest_cancel(dcbnl_skb, nest);
1589 goto nla_put_failure;
1590 }
ea45fe4e
SR		 1591 }
1592 nla_nest_end(dcbnl_skb, nest);
1593
1594 nlmsg_end(dcbnl_skb, nlh);
1595
7f891cf1
SR		 1596 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1597nla_put_failure:
1598 nlmsg_cancel(dcbnl_skb, nlh);
ea45fe4e 1599nlmsg_failure:
ea45fe4e
SR		 1600 kfree_skb(dcbnl_skb);
1601err_out:
1602 return ret;
1603}
1604
1605static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1606 u32 pid, u32 seq, u16 flags)
1607{
1608 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1609 int ret, i;
ea45fe4e 1610 u8 value;
ea45fe4e 1611
7f891cf1
SR		 1612 if (!netdev->dcbnl_ops->setfeatcfg)
1613 return -ENOTSUPP;
1614
1615 if (!tb[DCB_ATTR_FEATCFG])
1616 return -EINVAL;
ea45fe4e
SR		 1617
1618 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1619 dcbnl_featcfg_nest);
1620
7f891cf1 1621 if (ret)
ea45fe4e 1622 goto err;
ea45fe4e
SR		 1623
1624 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1625 if (data[i] == NULL)
1626 continue;
1627
1628 value = nla_get_u8(data[i]);
1629
1630 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1631
1632 if (ret)
7f891cf1 1633 goto err;
ea45fe4e 1634 }
ea45fe4e 1635err:
7f891cf1
SR		 1636 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1637 pid, seq, flags);
1638
ea45fe4e
SR		 1639 return ret;
1640}
1641
dc6ed1df
SR		 1642/* Handle CEE DCBX GET commands. */
1643static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
1644 u32 pid, u32 seq, u16 flags)
1645{
1646 struct sk_buff *skb;
1647 struct nlmsghdr *nlh;
1648 struct dcbmsg *dcb;
1649 struct nlattr *cee;
1650 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1651 int err;
1652
1653 if (!ops)
1654 return -EOPNOTSUPP;
1655
1656 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1657 if (!skb)
1658 return -ENOBUFS;
1659
1660 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1661
1662 dcb = NLMSG_DATA(nlh);
1663 dcb->dcb_family = AF_UNSPEC;
1664 dcb->cmd = DCB_CMD_CEE_GET;
1665
1666 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1667
1668 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1669 if (!cee)
1670 goto nla_put_failure;
1671
1672 /* get peer info if available */
1673 if (ops->cee_peer_getpg) {
1674 struct cee_pg pg;
1675 err = ops->cee_peer_getpg(netdev, &pg);
1676 if (!err)
1677 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
1678 }
1679
1680 if (ops->cee_peer_getpfc) {
1681 struct cee_pfc pfc;
1682 err = ops->cee_peer_getpfc(netdev, &pfc);
1683 if (!err)
1684 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);
1685 }
1686
1687 if (ops->peer_getappinfo && ops->peer_getapptable) {
1688 err = dcbnl_build_peer_app(netdev, skb,
1689 DCB_ATTR_CEE_PEER_APP_TABLE,
1690 DCB_ATTR_CEE_PEER_APP_INFO,
1691 DCB_ATTR_CEE_PEER_APP);
1692 if (err)
1693 goto nla_put_failure;
1694 }
1695
1696 nla_nest_end(skb, cee);
1697 nlmsg_end(skb, nlh);
1698
1699 return rtnl_unicast(skb, &init_net, pid);
1700nla_put_failure:
1701 nlmsg_cancel(skb, nlh);
1702nlmsg_failure:
1703 kfree_skb(skb);
1704 return -1;
1705}
1706
2f90b865
AD		 1707static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1708{
1709 struct net *net = sock_net(skb->sk);
1710 struct net_device *netdev;
1711 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1712 struct nlattr *tb[DCB_ATTR_MAX + 1];
1713 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1714 int ret = -EINVAL;
1715
09ad9bc7 1716 if (!net_eq(net, &init_net))
2f90b865
AD		 1717 return -EINVAL;
1718
1719 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1720 dcbnl_rtnl_policy);
1721 if (ret < 0)
1722 return ret;
1723
1724 if (!tb[DCB_ATTR_IFNAME])
1725 return -EINVAL;
1726
1727 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1728 if (!netdev)
1729 return -EINVAL;
1730
1731 if (!netdev->dcbnl_ops)
1732 goto errout;
1733
1734 switch (dcb->cmd) {
1735 case DCB_CMD_GSTATE:
1736 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1737 nlh->nlmsg_flags);
1738 goto out;
1739 case DCB_CMD_PFC_GCFG:
1740 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1741 nlh->nlmsg_flags);
1742 goto out;
1743 case DCB_CMD_GPERM_HWADDR:
1744 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1745 nlh->nlmsg_flags);
1746 goto out;
1747 case DCB_CMD_PGTX_GCFG:
1748 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1749 nlh->nlmsg_flags);
1750 goto out;
1751 case DCB_CMD_PGRX_GCFG:
1752 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1753 nlh->nlmsg_flags);
1754 goto out;
859ee3c4
AD		 1755 case DCB_CMD_BCN_GCFG:
1756 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1757 nlh->nlmsg_flags);
1758 goto out;
2f90b865
AD		 1759 case DCB_CMD_SSTATE:
1760 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1761 nlh->nlmsg_flags);
1762 goto out;
1763 case DCB_CMD_PFC_SCFG:
1764 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1765 nlh->nlmsg_flags);
1766 goto out;
1767
1768 case DCB_CMD_SET_ALL:
1769 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1770 nlh->nlmsg_flags);
1771 goto out;
1772 case DCB_CMD_PGTX_SCFG:
1773 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1774 nlh->nlmsg_flags);
1775 goto out;
1776 case DCB_CMD_PGRX_SCFG:
1777 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1778 nlh->nlmsg_flags);
1779 goto out;
46132188
AD		 1780 case DCB_CMD_GCAP:
1781 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1782 nlh->nlmsg_flags);
1783 goto out;
33dbabc4
AD		 1784 case DCB_CMD_GNUMTCS:
1785 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1786 nlh->nlmsg_flags);
1787 goto out;
1788 case DCB_CMD_SNUMTCS:
1789 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1790 nlh->nlmsg_flags);
1791 goto out;
0eb3aa9b
AD		 1792 case DCB_CMD_PFC_GSTATE:
1793 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1794 nlh->nlmsg_flags);
1795 goto out;
1796 case DCB_CMD_PFC_SSTATE:
1797 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1798 nlh->nlmsg_flags);
1799 goto out;
859ee3c4
AD		 1800 case DCB_CMD_BCN_SCFG:
1801 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1802 nlh->nlmsg_flags);
1803 goto out;
57949686
YZ		 1804 case DCB_CMD_GAPP:
1805 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1806 nlh->nlmsg_flags);
1807 goto out;
1808 case DCB_CMD_SAPP:
1809 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1810 nlh->nlmsg_flags);
1811 goto out;
3e29027a
JF		 1812 case DCB_CMD_IEEE_SET:
1813 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
f9ae7e4b 1814 nlh->nlmsg_flags);
3e29027a
JF		 1815 goto out;
1816 case DCB_CMD_IEEE_GET:
1817 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
f9ae7e4b
JF		 1818 nlh->nlmsg_flags);
1819 goto out;
1820 case DCB_CMD_IEEE_DEL:
1821 ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq,
1822 nlh->nlmsg_flags);
3e29027a 1823 goto out;
6241b625
SR		 1824 case DCB_CMD_GDCBX:
1825 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1826 nlh->nlmsg_flags);
1827 goto out;
1828 case DCB_CMD_SDCBX:
1829 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1830 nlh->nlmsg_flags);
1831 goto out;
ea45fe4e
SR		 1832 case DCB_CMD_GFEATCFG:
1833 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1834 nlh->nlmsg_flags);
1835 goto out;
1836 case DCB_CMD_SFEATCFG:
1837 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1838 nlh->nlmsg_flags);
1839 goto out;
dc6ed1df
SR		 1840 case DCB_CMD_CEE_GET:
1841 ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
1842 nlh->nlmsg_flags);
1843 goto out;
2f90b865
AD		 1844 default:
1845 goto errout;
1846 }
1847errout:
1848 ret = -EINVAL;
1849out:
1850 dev_put(netdev);
1851 return ret;
1852}
1853
9ab933ab
JF		 1854/**
1855 * dcb_getapp - retrieve the DCBX application user priority
1856 *
1857 * On success returns a non-zero 802.1p user priority bitmap
1858 * otherwise returns 0 as the invalid user priority bitmap to
1859 * indicate an error.
1860 */
1861u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1862{
1863 struct dcb_app_type *itr;
1864 u8 prio = 0;
1865
1866 spin_lock(&dcb_lock);
1867 list_for_each_entry(itr, &dcb_app_list, list) {
1868 if (itr->app.selector == app->selector &&
1869 itr->app.protocol == app->protocol &&
1870 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1871 prio = itr->app.priority;
1872 break;
1873 }
1874 }
1875 spin_unlock(&dcb_lock);
1876
1877 return prio;
1878}
1879EXPORT_SYMBOL(dcb_getapp);
1880
1881/**
b6db2174 1882 * dcb_setapp - add CEE dcb application data to app list
9ab933ab 1883 *
b6db2174
JF		 1884 * Priority 0 is an invalid priority in CEE spec. This routine
1885 * removes applications from the app list if the priority is
1886 * set to zero.
9ab933ab
JF		 1887 */
1888u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
1889{
1890 struct dcb_app_type *itr;
7ec79270
JF		 1891 struct dcb_app_type event;
1892
1893 memcpy(&event.name, dev->name, sizeof(event.name));
1894 memcpy(&event.app, new, sizeof(event.app));
9ab933ab
JF		 1895
1896 spin_lock(&dcb_lock);
1897 /* Search for existing match and replace */
1898 list_for_each_entry(itr, &dcb_app_list, list) {
1899 if (itr->app.selector == new->selector &&
1900 itr->app.protocol == new->protocol &&
1901 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1902 if (new->priority)
1903 itr->app.priority = new->priority;
1904 else {
1905 list_del(&itr->list);
1906 kfree(itr);
1907 }
1908 goto out;
1909 }
1910 }
1911 /* App type does not exist add new application type */
1912 if (new->priority) {
1913 struct dcb_app_type *entry;
1914 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1915 if (!entry) {
1916 spin_unlock(&dcb_lock);
1917 return -ENOMEM;
1918 }
1919
1920 memcpy(&entry->app, new, sizeof(*new));
1921 strncpy(entry->name, dev->name, IFNAMSIZ);
1922 list_add(&entry->list, &dcb_app_list);
1923 }
1924out:
1925 spin_unlock(&dcb_lock);
7ec79270 1926 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
9ab933ab
JF		 1927 return 0;
1928}
1929EXPORT_SYMBOL(dcb_setapp);
1930
a364c8cf
JF		 1931/**
1932 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1933 *
1934 * Helper routine which on success returns a non-zero 802.1Qaz user
1935 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1936 * not found in APP list.
1937 */
1938u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1939{
1940 struct dcb_app_type *itr;
1941 u8 prio = 0;
1942
1943 spin_lock(&dcb_lock);
1944 list_for_each_entry(itr, &dcb_app_list, list) {
1945 if (itr->app.selector == app->selector &&
1946 itr->app.protocol == app->protocol &&
1947 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1948 prio |= 1 << itr->app.priority;
1949 }
1950 }
1951 spin_unlock(&dcb_lock);
1952
1953 return prio;
1954}
1955EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1956
b6db2174
JF		 1957/**
1958 * dcb_ieee_setapp - add IEEE dcb application data to app list
1959 *
1960 * This adds Application data to the list. Multiple application
1961 * entries may exists for the same selector and protocol as long
1962 * as the priorities are different.
1963 */
1964int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1965{
1966 struct dcb_app_type *itr, *entry;
1967 struct dcb_app_type event;
1968 int err = 0;
1969
1970 memcpy(&event.name, dev->name, sizeof(event.name));
1971 memcpy(&event.app, new, sizeof(event.app));
1972
1973 spin_lock(&dcb_lock);
1974 /* Search for existing match and abort if found */
1975 list_for_each_entry(itr, &dcb_app_list, list) {
1976 if (itr->app.selector == new->selector &&
1977 itr->app.protocol == new->protocol &&
1978 itr->app.priority == new->priority &&
1979 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1980 err = -EEXIST;
1981 goto out;
1982 }
1983 }
1984
1985 /* App entry does not exist add new entry */
1986 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1987 if (!entry) {
1988 err = -ENOMEM;
1989 goto out;
1990 }
1991
1992 memcpy(&entry->app, new, sizeof(*new));
1993 strncpy(entry->name, dev->name, IFNAMSIZ);
1994 list_add(&entry->list, &dcb_app_list);
1995out:
1996 spin_unlock(&dcb_lock);
1997 if (!err)
1998 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1999 return err;
2000}
2001EXPORT_SYMBOL(dcb_ieee_setapp);
2002
f9ae7e4b
JF		 2003/**
2004 * dcb_ieee_delapp - delete IEEE dcb application data from list
2005 *
2006 * This removes a matching APP data from the APP list
2007 */
2008int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
2009{
2010 struct dcb_app_type *itr;
2011 struct dcb_app_type event;
2012 int err = -ENOENT;
2013
2014 memcpy(&event.name, dev->name, sizeof(event.name));
2015 memcpy(&event.app, del, sizeof(event.app));
2016
2017 spin_lock(&dcb_lock);
2018 /* Search for existing match and remove it. */
2019 list_for_each_entry(itr, &dcb_app_list, list) {
2020 if (itr->app.selector == del->selector &&
2021 itr->app.protocol == del->protocol &&
2022 itr->app.priority == del->priority &&
2023 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
2024 list_del(&itr->list);
2025 kfree(itr);
2026 err = 0;
2027 goto out;
2028 }
2029 }
2030
2031out:
2032 spin_unlock(&dcb_lock);
2033 if (!err)
2034 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
2035 return err;
2036}
2037EXPORT_SYMBOL(dcb_ieee_delapp);
2038
7c14c3f1 2039static void dcb_flushapp(void)
9ab933ab
JF		 2040{
2041 struct dcb_app_type *app;
2a8fe003 2042 struct dcb_app_type *tmp;
9ab933ab
JF		 2043
2044 spin_lock(&dcb_lock);
2a8fe003 2045 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
9ab933ab
JF		 2046 list_del(&app->list);
2047 kfree(app);
2048 }
2049 spin_unlock(&dcb_lock);
2050}
2051
2f90b865
AD		 2052static int __init dcbnl_init(void)
2053{
9ab933ab
JF		 2054 INIT_LIST_HEAD(&dcb_app_list);
2055
c7ac8679
GR		 2056 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
2057 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
2f90b865
AD		 2058
2059 return 0;
2060}
2061module_init(dcbnl_init);
2062
2063static void __exit dcbnl_exit(void)
2064{
2065 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
2066 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
9ab933ab 2067 dcb_flushapp();
2f90b865
AD		 2068}
2069module_exit(dcbnl_exit);
kernel source for telekom puls (alcatel/mediatek)