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dcbnl: Prepare framework to shorten handling functions
[deliverable/linux.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 27#include <linux/rtnetlink.h>
3a9a231d 28#include <linux/module.h>
2f90b865
AD		 29#include <net/sock.h>
30
31/**
32 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
33 * intended to allow network traffic with differing requirements
34 * (highly reliable, no drops vs. best effort vs. low latency) to operate
35 * and co-exist on Ethernet. Current DCB features are:
36 *
37 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
38 * framework for assigning bandwidth guarantees to traffic classes.
39 *
40 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
41 * can work independently for each 802.1p priority.
42 *
43 * Congestion Notification - provides a mechanism for end-to-end congestion
44 * control for protocols which do not have built-in congestion management.
45 *
46 * More information about the emerging standards for these Ethernet features
47 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
48 *
49 * This file implements an rtnetlink interface to allow configuration of DCB
50 * features for capable devices.
51 */
52
53MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
7a6b6f51 54MODULE_DESCRIPTION("Data Center Bridging netlink interface");
2f90b865
AD		 55MODULE_LICENSE("GPL");
56
57/**************** DCB attribute policies *************************************/
58
59/* DCB netlink attributes policy */
b54452b0 60static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 61 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
62 [DCB_ATTR_STATE] = {.type = NLA_U8},
63 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
64 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
65 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
2f90b865 66 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 67 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
68 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
69 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 70 [DCB_ATTR_APP] = {.type = NLA_NESTED},
3e29027a 71 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
6241b625 72 [DCB_ATTR_DCBX] = {.type = NLA_U8},
ea45fe4e 73 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
2f90b865
AD		 74};
75
76/* DCB priority flow control to User Priority nested attributes */
b54452b0 77static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
2f90b865
AD		 78 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
82 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
83 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
84 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
85 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
86 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
87};
88
89/* DCB priority grouping nested attributes */
b54452b0 90static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
2f90b865
AD		 91 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
96 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
97 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
98 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
99 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
100 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
104 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
105 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
106 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
107 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
108 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
109};
110
111/* DCB traffic class nested attributes. */
b54452b0 112static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
2f90b865
AD		 113 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
114 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
115 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
116 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
117 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
118};
119
46132188 120/* DCB capabilities nested attributes. */
b54452b0 121static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
46132188
AD		 122 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
123 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
125 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
126 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
127 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
128 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
129 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
6241b625 130 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
46132188 131};
2f90b865 132
33dbabc4 133/* DCB capabilities nested attributes. */
b54452b0 134static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
33dbabc4
AD		 135 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
136 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
137 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
138};
139
859ee3c4 140/* DCB BCN nested attributes. */
b54452b0 141static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
859ee3c4
AD		 142 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
146 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
147 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
148 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
149 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
150 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
f4314e81
DS		 151 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
152 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 153 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
162 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
163 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
164 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
165 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
166 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
167};
168
6fa382af 169/* DCB APP nested attributes. */
b54452b0 170static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
6fa382af
YZ		 171 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
172 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
173 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
174};
175
3e29027a
JF		 176/* IEEE 802.1Qaz nested attributes. */
177static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
178 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
179 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
180 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
08f10aff 181 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
3e29027a
JF		 182};
183
184static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
185 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
186};
187
ea45fe4e
SR		 188/* DCB number of traffic classes nested attributes. */
189static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
190 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
191 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
192 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
193 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
194};
195
9ab933ab
JF		 196static LIST_HEAD(dcb_app_list);
197static DEFINE_SPINLOCK(dcb_lock);
198
33a03aad
TG		 199static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
200 u32 flags, struct nlmsghdr **nlhp)
201{
202 struct sk_buff *skb;
203 struct dcbmsg *dcb;
204 struct nlmsghdr *nlh;
205
206 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
207 if (!skb)
208 return NULL;
209
210 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
211 if (!nlh) {
212 /* header should always fit, allocation must be buggy */
213 BUG();
214 }
215
216 dcb = nlmsg_data(nlh);
217 dcb->dcb_family = AF_UNSPEC;
218 dcb->cmd = cmd;
219 dcb->dcb_pad = 0;
220
221 if (nlhp)
222 *nlhp = nlh;
223
224 return skb;
225}
226
2f90b865
AD		 227/* standard netlink reply call */
228static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
229 u32 seq, u16 flags)
230{
231 struct sk_buff *dcbnl_skb;
232 struct dcbmsg *dcb;
233 struct nlmsghdr *nlh;
234 int ret = -EINVAL;
235
236 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
237 if (!dcbnl_skb)
238 return ret;
239
240 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
241
242 dcb = NLMSG_DATA(nlh);
243 dcb->dcb_family = AF_UNSPEC;
244 dcb->cmd = cmd;
245 dcb->dcb_pad = 0;
246
247 ret = nla_put_u8(dcbnl_skb, attr, value);
248 if (ret)
249 goto err;
250
251 /* end the message, assign the nlmsg_len. */
252 nlmsg_end(dcbnl_skb, nlh);
253 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
254 if (ret)
7eaf5077 255 return -EINVAL;
2f90b865
AD		 256
257 return 0;
258nlmsg_failure:
259err:
858eb711 260 kfree_skb(dcbnl_skb);
2f90b865
AD		 261 return ret;
262}
263
264static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
265 u32 pid, u32 seq, u16 flags)
266{
267 int ret = -EINVAL;
268
269 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
270 if (!netdev->dcbnl_ops->getstate)
271 return ret;
272
273 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
274 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
275
276 return ret;
277}
278
279static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
280 u32 pid, u32 seq, u16 flags)
281{
282 struct sk_buff *dcbnl_skb;
283 struct nlmsghdr *nlh;
284 struct dcbmsg *dcb;
285 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
286 u8 value;
287 int ret = -EINVAL;
288 int i;
289 int getall = 0;
290
291 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
292 return ret;
293
294 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
295 tb[DCB_ATTR_PFC_CFG],
296 dcbnl_pfc_up_nest);
297 if (ret)
298 goto err_out;
299
300 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
301 if (!dcbnl_skb)
302 goto err_out;
303
304 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
305
306 dcb = NLMSG_DATA(nlh);
307 dcb->dcb_family = AF_UNSPEC;
308 dcb->cmd = DCB_CMD_PFC_GCFG;
309
310 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
311 if (!nest)
312 goto err;
313
314 if (data[DCB_PFC_UP_ATTR_ALL])
315 getall = 1;
316
317 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
318 if (!getall && !data[i])
319 continue;
320
321 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
322 &value);
323 ret = nla_put_u8(dcbnl_skb, i, value);
324
325 if (ret) {
326 nla_nest_cancel(dcbnl_skb, nest);
327 goto err;
328 }
329 }
330 nla_nest_end(dcbnl_skb, nest);
331
332 nlmsg_end(dcbnl_skb, nlh);
333
334 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
335 if (ret)
7eaf5077 336 goto err_out;
2f90b865
AD		 337
338 return 0;
339nlmsg_failure:
340err:
858eb711 341 kfree_skb(dcbnl_skb);
2f90b865
AD		 342err_out:
343 return -EINVAL;
344}
345
346static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
347 u32 pid, u32 seq, u16 flags)
348{
349 struct sk_buff *dcbnl_skb;
350 struct nlmsghdr *nlh;
351 struct dcbmsg *dcb;
352 u8 perm_addr[MAX_ADDR_LEN];
353 int ret = -EINVAL;
354
355 if (!netdev->dcbnl_ops->getpermhwaddr)
356 return ret;
357
358 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
359 if (!dcbnl_skb)
360 goto err_out;
361
362 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
363
364 dcb = NLMSG_DATA(nlh);
365 dcb->dcb_family = AF_UNSPEC;
366 dcb->cmd = DCB_CMD_GPERM_HWADDR;
367
368 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
369
370 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
371 perm_addr);
372
373 nlmsg_end(dcbnl_skb, nlh);
374
375 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
376 if (ret)
7eaf5077 377 goto err_out;
2f90b865
AD		 378
379 return 0;
380
381nlmsg_failure:
858eb711 382 kfree_skb(dcbnl_skb);
2f90b865
AD		 383err_out:
384 return -EINVAL;
385}
386
46132188
AD		 387static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
388 u32 pid, u32 seq, u16 flags)
389{
390 struct sk_buff *dcbnl_skb;
391 struct nlmsghdr *nlh;
392 struct dcbmsg *dcb;
393 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
394 u8 value;
395 int ret = -EINVAL;
396 int i;
397 int getall = 0;
398
399 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
400 return ret;
401
402 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
403 dcbnl_cap_nest);
404 if (ret)
405 goto err_out;
406
407 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
408 if (!dcbnl_skb)
409 goto err_out;
410
411 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
412
413 dcb = NLMSG_DATA(nlh);
414 dcb->dcb_family = AF_UNSPEC;
415 dcb->cmd = DCB_CMD_GCAP;
416
417 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
418 if (!nest)
419 goto err;
420
421 if (data[DCB_CAP_ATTR_ALL])
422 getall = 1;
423
424 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
425 if (!getall && !data[i])
426 continue;
427
428 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
429 ret = nla_put_u8(dcbnl_skb, i, value);
430
431 if (ret) {
432 nla_nest_cancel(dcbnl_skb, nest);
433 goto err;
434 }
435 }
436 }
437 nla_nest_end(dcbnl_skb, nest);
438
439 nlmsg_end(dcbnl_skb, nlh);
440
441 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
442 if (ret)
7eaf5077 443 goto err_out;
46132188
AD		 444
445 return 0;
446nlmsg_failure:
447err:
858eb711 448 kfree_skb(dcbnl_skb);
46132188
AD		 449err_out:
450 return -EINVAL;
451}
452
33dbabc4
AD		 453static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
454 u32 pid, u32 seq, u16 flags)
455{
456 struct sk_buff *dcbnl_skb;
457 struct nlmsghdr *nlh;
458 struct dcbmsg *dcb;
459 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
460 u8 value;
461 int ret = -EINVAL;
462 int i;
463 int getall = 0;
464
465 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
466 return ret;
467
468 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
469 dcbnl_numtcs_nest);
470 if (ret) {
471 ret = -EINVAL;
472 goto err_out;
473 }
474
475 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
476 if (!dcbnl_skb) {
477 ret = -EINVAL;
478 goto err_out;
479 }
480
481 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
482
483 dcb = NLMSG_DATA(nlh);
484 dcb->dcb_family = AF_UNSPEC;
485 dcb->cmd = DCB_CMD_GNUMTCS;
486
487 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
488 if (!nest) {
489 ret = -EINVAL;
490 goto err;
491 }
492
493 if (data[DCB_NUMTCS_ATTR_ALL])
494 getall = 1;
495
496 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
497 if (!getall && !data[i])
498 continue;
499
500 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
501 if (!ret) {
502 ret = nla_put_u8(dcbnl_skb, i, value);
503
504 if (ret) {
505 nla_nest_cancel(dcbnl_skb, nest);
506 ret = -EINVAL;
507 goto err;
508 }
509 } else {
510 goto err;
511 }
512 }
513 nla_nest_end(dcbnl_skb, nest);
514
515 nlmsg_end(dcbnl_skb, nlh);
516
517 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
518 if (ret) {
519 ret = -EINVAL;
7eaf5077 520 goto err_out;
33dbabc4
AD		 521 }
522
523 return 0;
524nlmsg_failure:
525err:
858eb711 526 kfree_skb(dcbnl_skb);
33dbabc4
AD		 527err_out:
528 return ret;
529}
530
531static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
532 u32 pid, u32 seq, u16 flags)
533{
534 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
535 int ret = -EINVAL;
536 u8 value;
537 int i;
538
8b124a8e 539 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
33dbabc4
AD		 540 return ret;
541
542 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
543 dcbnl_numtcs_nest);
544
545 if (ret) {
546 ret = -EINVAL;
547 goto err;
548 }
549
550 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
551 if (data[i] == NULL)
552 continue;
553
554 value = nla_get_u8(data[i]);
555
556 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
557
558 if (ret)
559 goto operr;
560 }
561
562operr:
563 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
564 DCB_ATTR_NUMTCS, pid, seq, flags);
565
566err:
567 return ret;
568}
569
0eb3aa9b
AD		 570static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
571 u32 pid, u32 seq, u16 flags)
572{
573 int ret = -EINVAL;
574
575 if (!netdev->dcbnl_ops->getpfcstate)
576 return ret;
577
578 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
579 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
580 pid, seq, flags);
581
582 return ret;
583}
584
585static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
586 u32 pid, u32 seq, u16 flags)
587{
588 int ret = -EINVAL;
589 u8 value;
590
591 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
592 return ret;
593
594 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
595
596 netdev->dcbnl_ops->setpfcstate(netdev, value);
597
598 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
599 pid, seq, flags);
600
601 return ret;
602}
603
57949686
YZ		 604static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
605 u32 pid, u32 seq, u16 flags)
606{
607 struct sk_buff *dcbnl_skb;
608 struct nlmsghdr *nlh;
609 struct dcbmsg *dcb;
610 struct nlattr *app_nest;
611 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
612 u16 id;
613 u8 up, idtype;
614 int ret = -EINVAL;
615
3dce38a0 616 if (!tb[DCB_ATTR_APP])
57949686
YZ		 617 goto out;
618
619 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
620 dcbnl_app_nest);
621 if (ret)
622 goto out;
623
624 ret = -EINVAL;
625 /* all must be non-null */
626 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
627 (!app_tb[DCB_APP_ATTR_ID]))
628 goto out;
629
630 /* either by eth type or by socket number */
631 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
632 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
633 (idtype != DCB_APP_IDTYPE_PORTNUM))
634 goto out;
635
636 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
3dce38a0
JF		 637
638 if (netdev->dcbnl_ops->getapp) {
639 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
640 } else {
641 struct dcb_app app = {
642 .selector = idtype,
643 .protocol = id,
644 };
645 up = dcb_getapp(netdev, &app);
646 }
57949686
YZ		 647
648 /* send this back */
649 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
650 if (!dcbnl_skb)
651 goto out;
652
653 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
654 dcb = NLMSG_DATA(nlh);
655 dcb->dcb_family = AF_UNSPEC;
656 dcb->cmd = DCB_CMD_GAPP;
657
658 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
d3337de5
JJ		 659 if (!app_nest)
660 goto out_cancel;
661
57949686
YZ		 662 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
663 if (ret)
664 goto out_cancel;
665
666 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
667 if (ret)
668 goto out_cancel;
669
670 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
671 if (ret)
672 goto out_cancel;
673
674 nla_nest_end(dcbnl_skb, app_nest);
675 nlmsg_end(dcbnl_skb, nlh);
676
677 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
678 if (ret)
679 goto nlmsg_failure;
680
681 goto out;
682
683out_cancel:
684 nla_nest_cancel(dcbnl_skb, app_nest);
685nlmsg_failure:
686 kfree_skb(dcbnl_skb);
687out:
688 return ret;
689}
690
691static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
692 u32 pid, u32 seq, u16 flags)
693{
9ab933ab 694 int err, ret = -EINVAL;
57949686
YZ		 695 u16 id;
696 u8 up, idtype;
697 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
698
9ab933ab 699 if (!tb[DCB_ATTR_APP])
57949686
YZ		 700 goto out;
701
702 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
703 dcbnl_app_nest);
704 if (ret)
705 goto out;
706
707 ret = -EINVAL;
708 /* all must be non-null */
709 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
710 (!app_tb[DCB_APP_ATTR_ID]) ||
711 (!app_tb[DCB_APP_ATTR_PRIORITY]))
712 goto out;
713
714 /* either by eth type or by socket number */
715 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
716 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
717 (idtype != DCB_APP_IDTYPE_PORTNUM))
718 goto out;
719
720 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
721 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
722
9ab933ab
JF		 723 if (netdev->dcbnl_ops->setapp) {
724 err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
725 } else {
726 struct dcb_app app;
727 app.selector = idtype;
728 app.protocol = id;
729 app.priority = up;
730 err = dcb_setapp(netdev, &app);
731 }
732
733 ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
734 pid, seq, flags);
08157984 735 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
57949686
YZ		 736out:
737 return ret;
738}
739
2f90b865
AD		 740static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
741 u32 pid, u32 seq, u16 flags, int dir)
742{
743 struct sk_buff *dcbnl_skb;
744 struct nlmsghdr *nlh;
745 struct dcbmsg *dcb;
746 struct nlattr *pg_nest, *param_nest, *data;
747 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
748 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
749 u8 prio, pgid, tc_pct, up_map;
750 int ret = -EINVAL;
751 int getall = 0;
752 int i;
753
754 if (!tb[DCB_ATTR_PG_CFG] ||
755 !netdev->dcbnl_ops->getpgtccfgtx ||
756 !netdev->dcbnl_ops->getpgtccfgrx ||
757 !netdev->dcbnl_ops->getpgbwgcfgtx ||
758 !netdev->dcbnl_ops->getpgbwgcfgrx)
759 return ret;
760
761 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
762 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
763
764 if (ret)
765 goto err_out;
766
767 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
768 if (!dcbnl_skb)
769 goto err_out;
770
771 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
772
773 dcb = NLMSG_DATA(nlh);
774 dcb->dcb_family = AF_UNSPEC;
775 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
776
777 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
778 if (!pg_nest)
779 goto err;
780
781 if (pg_tb[DCB_PG_ATTR_TC_ALL])
782 getall = 1;
783
784 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
785 if (!getall && !pg_tb[i])
786 continue;
787
788 if (pg_tb[DCB_PG_ATTR_TC_ALL])
789 data = pg_tb[DCB_PG_ATTR_TC_ALL];
790 else
791 data = pg_tb[i];
792 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
793 data, dcbnl_tc_param_nest);
794 if (ret)
795 goto err_pg;
796
797 param_nest = nla_nest_start(dcbnl_skb, i);
798 if (!param_nest)
799 goto err_pg;
800
801 pgid = DCB_ATTR_VALUE_UNDEFINED;
802 prio = DCB_ATTR_VALUE_UNDEFINED;
803 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
804 up_map = DCB_ATTR_VALUE_UNDEFINED;
805
806 if (dir) {
807 /* Rx */
808 netdev->dcbnl_ops->getpgtccfgrx(netdev,
809 i - DCB_PG_ATTR_TC_0, &prio,
810 &pgid, &tc_pct, &up_map);
811 } else {
812 /* Tx */
813 netdev->dcbnl_ops->getpgtccfgtx(netdev,
814 i - DCB_PG_ATTR_TC_0, &prio,
815 &pgid, &tc_pct, &up_map);
816 }
817
818 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
819 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
820 ret = nla_put_u8(dcbnl_skb,
821 DCB_TC_ATTR_PARAM_PGID, pgid);
822 if (ret)
823 goto err_param;
824 }
825 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
826 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
827 ret = nla_put_u8(dcbnl_skb,
828 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
829 if (ret)
830 goto err_param;
831 }
832 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
833 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
834 ret = nla_put_u8(dcbnl_skb,
835 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
836 if (ret)
837 goto err_param;
838 }
839 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
840 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
841 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
842 tc_pct);
843 if (ret)
844 goto err_param;
845 }
846 nla_nest_end(dcbnl_skb, param_nest);
847 }
848
849 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
850 getall = 1;
851 else
852 getall = 0;
853
854 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
855 if (!getall && !pg_tb[i])
856 continue;
857
858 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
859
860 if (dir) {
861 /* Rx */
862 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
863 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
864 } else {
865 /* Tx */
866 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
867 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
868 }
869 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
870
871 if (ret)
872 goto err_pg;
873 }
874
875 nla_nest_end(dcbnl_skb, pg_nest);
876
877 nlmsg_end(dcbnl_skb, nlh);
878
879 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
880 if (ret)
7eaf5077 881 goto err_out;
2f90b865
AD		 882
883 return 0;
884
885err_param:
886 nla_nest_cancel(dcbnl_skb, param_nest);
887err_pg:
888 nla_nest_cancel(dcbnl_skb, pg_nest);
889nlmsg_failure:
890err:
858eb711 891 kfree_skb(dcbnl_skb);
2f90b865
AD		 892err_out:
893 ret = -EINVAL;
894 return ret;
895}
896
897static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
898 u32 pid, u32 seq, u16 flags)
899{
900 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
901}
902
903static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
904 u32 pid, u32 seq, u16 flags)
905{
906 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
907}
908
909static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
910 u32 pid, u32 seq, u16 flags)
911{
912 int ret = -EINVAL;
913 u8 value;
914
915 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
916 return ret;
917
918 value = nla_get_u8(tb[DCB_ATTR_STATE]);
919
1486a61e
DS		 920 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
921 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
2f90b865
AD		 922 pid, seq, flags);
923
924 return ret;
925}
926
927static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
928 u32 pid, u32 seq, u16 flags)
929{
930 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
931 int i;
932 int ret = -EINVAL;
933 u8 value;
934
935 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
936 return ret;
937
938 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
939 tb[DCB_ATTR_PFC_CFG],
940 dcbnl_pfc_up_nest);
941 if (ret)
942 goto err;
943
944 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
945 if (data[i] == NULL)
946 continue;
947 value = nla_get_u8(data[i]);
948 netdev->dcbnl_ops->setpfccfg(netdev,
949 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
950 }
951
952 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
953 pid, seq, flags);
954err:
955 return ret;
956}
957
958static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
959 u32 pid, u32 seq, u16 flags)
960{
961 int ret = -EINVAL;
962
963 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
964 return ret;
965
966 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
967 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
08157984 968 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
2f90b865
AD		 969
970 return ret;
971}
972
973static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
974 u32 pid, u32 seq, u16 flags, int dir)
975{
976 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
977 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
978 int ret = -EINVAL;
979 int i;
980 u8 pgid;
981 u8 up_map;
982 u8 prio;
983 u8 tc_pct;
984
985 if (!tb[DCB_ATTR_PG_CFG] ||
986 !netdev->dcbnl_ops->setpgtccfgtx ||
987 !netdev->dcbnl_ops->setpgtccfgrx ||
988 !netdev->dcbnl_ops->setpgbwgcfgtx ||
989 !netdev->dcbnl_ops->setpgbwgcfgrx)
990 return ret;
991
992 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
993 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
994 if (ret)
995 goto err;
996
997 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
998 if (!pg_tb[i])
999 continue;
1000
1001 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
1002 pg_tb[i], dcbnl_tc_param_nest);
1003 if (ret)
1004 goto err;
1005
1006 pgid = DCB_ATTR_VALUE_UNDEFINED;
1007 prio = DCB_ATTR_VALUE_UNDEFINED;
1008 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1009 up_map = DCB_ATTR_VALUE_UNDEFINED;
1010
1011 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
1012 prio =
1013 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
1014
1015 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
1016 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
1017
1018 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
1019 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
1020
1021 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
1022 up_map =
1023 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
1024
1025 /* dir: Tx = 0, Rx = 1 */
1026 if (dir) {
1027 /* Rx */
1028 netdev->dcbnl_ops->setpgtccfgrx(netdev,
1029 i - DCB_PG_ATTR_TC_0,
1030 prio, pgid, tc_pct, up_map);
1031 } else {
1032 /* Tx */
1033 netdev->dcbnl_ops->setpgtccfgtx(netdev,
1034 i - DCB_PG_ATTR_TC_0,
1035 prio, pgid, tc_pct, up_map);
1036 }
1037 }
1038
1039 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1040 if (!pg_tb[i])
1041 continue;
1042
1043 tc_pct = nla_get_u8(pg_tb[i]);
1044
1045 /* dir: Tx = 0, Rx = 1 */
1046 if (dir) {
1047 /* Rx */
1048 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
1049 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1050 } else {
1051 /* Tx */
1052 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
1053 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1054 }
1055 }
1056
1057 ret = dcbnl_reply(0, RTM_SETDCB,
1058 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
1059 DCB_ATTR_PG_CFG, pid, seq, flags);
1060
1061err:
1062 return ret;
1063}
1064
1065static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
1066 u32 pid, u32 seq, u16 flags)
1067{
1068 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
1069}
1070
1071static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
1072 u32 pid, u32 seq, u16 flags)
1073{
1074 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
1075}
1076
859ee3c4
AD		 1077static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
1078 u32 pid, u32 seq, u16 flags)
1079{
1080 struct sk_buff *dcbnl_skb;
1081 struct nlmsghdr *nlh;
1082 struct dcbmsg *dcb;
1083 struct nlattr *bcn_nest;
1084 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1085 u8 value_byte;
1086 u32 value_integer;
1087 int ret = -EINVAL;
1088 bool getall = false;
1089 int i;
1090
1091 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1092 !netdev->dcbnl_ops->getbcncfg)
1093 return ret;
1094
1095 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1096 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1097
1098 if (ret)
1099 goto err_out;
1100
1101 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1102 if (!dcbnl_skb)
1103 goto err_out;
1104
1105 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1106
1107 dcb = NLMSG_DATA(nlh);
1108 dcb->dcb_family = AF_UNSPEC;
1109 dcb->cmd = DCB_CMD_BCN_GCFG;
1110
1111 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1112 if (!bcn_nest)
1113 goto err;
1114
1115 if (bcn_tb[DCB_BCN_ATTR_ALL])
1116 getall = true;
1117
1118 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1119 if (!getall && !bcn_tb[i])
1120 continue;
1121
1122 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1123 &value_byte);
1124 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1125 if (ret)
1126 goto err_bcn;
1127 }
1128
f4314e81 1129 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1130 if (!getall && !bcn_tb[i])
1131 continue;
1132
1133 netdev->dcbnl_ops->getbcncfg(netdev, i,
1134 &value_integer);
1135 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1136 if (ret)
1137 goto err_bcn;
1138 }
1139
1140 nla_nest_end(dcbnl_skb, bcn_nest);
1141
1142 nlmsg_end(dcbnl_skb, nlh);
1143
1144 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1145 if (ret)
7eaf5077 1146 goto err_out;
859ee3c4
AD		 1147
1148 return 0;
1149
1150err_bcn:
1151 nla_nest_cancel(dcbnl_skb, bcn_nest);
1152nlmsg_failure:
1153err:
858eb711 1154 kfree_skb(dcbnl_skb);
859ee3c4
AD		 1155err_out:
1156 ret = -EINVAL;
1157 return ret;
1158}
1159
1160static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1161 u32 pid, u32 seq, u16 flags)
1162{
1163 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1164 int i;
1165 int ret = -EINVAL;
1166 u8 value_byte;
1167 u32 value_int;
1168
f64f9e71
JP		 1169 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1170 !netdev->dcbnl_ops->setbcnrp)
859ee3c4
AD		 1171 return ret;
1172
1173 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1174 tb[DCB_ATTR_BCN],
1175 dcbnl_pfc_up_nest);
1176 if (ret)
1177 goto err;
1178
1179 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1180 if (data[i] == NULL)
1181 continue;
1182 value_byte = nla_get_u8(data[i]);
1183 netdev->dcbnl_ops->setbcnrp(netdev,
1184 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1185 }
1186
f4314e81 1187 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 1188 if (data[i] == NULL)
1189 continue;
1190 value_int = nla_get_u32(data[i]);
1191 netdev->dcbnl_ops->setbcncfg(netdev,
1192 i, value_int);
1193 }
1194
1195 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1196 pid, seq, flags);
1197err:
1198 return ret;
1199}
1200
dc6ed1df
SR		 1201static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
1202 int app_nested_type, int app_info_type,
1203 int app_entry_type)
eed84713
SR		 1204{
1205 struct dcb_peer_app_info info;
1206 struct dcb_app *table = NULL;
1207 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1208 u16 app_count;
1209 int err;
1210
1211
1212 /**
1213 * retrieve the peer app configuration form the driver. If the driver
1214 * handlers fail exit without doing anything
1215 */
1216 err = ops->peer_getappinfo(netdev, &info, &app_count);
1217 if (!err && app_count) {
1218 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
1219 if (!table)
1220 return -ENOMEM;
1221
1222 err = ops->peer_getapptable(netdev, table);
1223 }
1224
1225 if (!err) {
1226 u16 i;
1227 struct nlattr *app;
1228
1229 /**
1230 * build the message, from here on the only possible failure
1231 * is due to the skb size
1232 */
1233 err = -EMSGSIZE;
1234
dc6ed1df 1235 app = nla_nest_start(skb, app_nested_type);
eed84713
SR		 1236 if (!app)
1237 goto nla_put_failure;
1238
1eb4c977
DM		 1239 if (app_info_type &&
1240 nla_put(skb, app_info_type, sizeof(info), &info))
1241 goto nla_put_failure;
eed84713 1242
1eb4c977
DM		 1243 for (i = 0; i < app_count; i++) {
1244 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1245 &table[i]))
1246 goto nla_put_failure;
1247 }
eed84713
SR		 1248 nla_nest_end(skb, app);
1249 }
1250 err = 0;
1251
1252nla_put_failure:
1253 kfree(table);
1254 return err;
1255}
3e29027a
JF		 1256
1257/* Handle IEEE 802.1Qaz GET commands. */
314b4778 1258static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
3e29027a 1259{
9ab933ab
JF		 1260 struct nlattr *ieee, *app;
1261 struct dcb_app_type *itr;
3e29027a 1262 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
c7797baf 1263 int dcbx;
314b4778 1264 int err = -EMSGSIZE;
3e29027a 1265
1eb4c977
DM		 1266 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1267 goto nla_put_failure;
3e29027a
JF		 1268 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1269 if (!ieee)
1270 goto nla_put_failure;
1271
1272 if (ops->ieee_getets) {
1273 struct ieee_ets ets;
1274 err = ops->ieee_getets(netdev, &ets);
1eb4c977
DM		 1275 if (!err &&
1276 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
1277 goto nla_put_failure;
3e29027a
JF		 1278 }
1279
08f10aff
AV		 1280 if (ops->ieee_getmaxrate) {
1281 struct ieee_maxrate maxrate;
1282 err = ops->ieee_getmaxrate(netdev, &maxrate);
1283 if (!err) {
1284 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1285 sizeof(maxrate), &maxrate);
1286 if (err)
1287 goto nla_put_failure;
1288 }
1289 }
1290
3e29027a
JF		 1291 if (ops->ieee_getpfc) {
1292 struct ieee_pfc pfc;
1293 err = ops->ieee_getpfc(netdev, &pfc);
1eb4c977
DM		 1294 if (!err &&
1295 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
1296 goto nla_put_failure;
3e29027a
JF		 1297 }
1298
9ab933ab
JF		 1299 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1300 if (!app)
1301 goto nla_put_failure;
1302
1303 spin_lock(&dcb_lock);
1304 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1305 if (itr->ifindex == netdev->ifindex) {
70bfa2d2
DC		 1306 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1307 &itr->app);
1308 if (err) {
1309 spin_unlock(&dcb_lock);
1310 goto nla_put_failure;
1311 }
1312 }
9ab933ab 1313 }
c7797baf
JF		 1314
1315 if (netdev->dcbnl_ops->getdcbx)
1316 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1317 else
1318 dcbx = -EOPNOTSUPP;
1319
9ab933ab
JF		 1320 spin_unlock(&dcb_lock);
1321 nla_nest_end(skb, app);
1322
eed84713
SR		 1323 /* get peer info if available */
1324 if (ops->ieee_peer_getets) {
1325 struct ieee_ets ets;
1326 err = ops->ieee_peer_getets(netdev, &ets);
1eb4c977
DM		 1327 if (!err &&
1328 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
1329 goto nla_put_failure;
eed84713
SR		 1330 }
1331
1332 if (ops->ieee_peer_getpfc) {
1333 struct ieee_pfc pfc;
1334 err = ops->ieee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1335 if (!err &&
1336 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
1337 goto nla_put_failure;
eed84713
SR		 1338 }
1339
1340 if (ops->peer_getappinfo && ops->peer_getapptable) {
dc6ed1df
SR		 1341 err = dcbnl_build_peer_app(netdev, skb,
1342 DCB_ATTR_IEEE_PEER_APP,
1343 DCB_ATTR_IEEE_APP_UNSPEC,
1344 DCB_ATTR_IEEE_APP);
eed84713
SR		 1345 if (err)
1346 goto nla_put_failure;
1347 }
1348
3e29027a 1349 nla_nest_end(skb, ieee);
c7797baf
JF		 1350 if (dcbx >= 0) {
1351 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1352 if (err)
1353 goto nla_put_failure;
1354 }
3e29027a 1355
314b4778
JF		 1356 return 0;
1357
3e29027a 1358nla_put_failure:
314b4778 1359 return err;
3e29027a
JF		 1360}
1361
5b7f7626
SR		 1362static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1363 int dir)
1364{
1365 u8 pgid, up_map, prio, tc_pct;
1366 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1367 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1368 struct nlattr *pg = nla_nest_start(skb, i);
1369
1370 if (!pg)
1371 goto nla_put_failure;
1372
1373 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1374 struct nlattr *tc_nest = nla_nest_start(skb, i);
1375
1376 if (!tc_nest)
1377 goto nla_put_failure;
1378
1379 pgid = DCB_ATTR_VALUE_UNDEFINED;
1380 prio = DCB_ATTR_VALUE_UNDEFINED;
1381 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1382 up_map = DCB_ATTR_VALUE_UNDEFINED;
1383
1384 if (!dir)
1385 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1386 &prio, &pgid, &tc_pct, &up_map);
1387 else
1388 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1389 &prio, &pgid, &tc_pct, &up_map);
1390
1eb4c977
DM		 1391 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1392 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1393 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1394 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
1395 goto nla_put_failure;
5b7f7626
SR		 1396 nla_nest_end(skb, tc_nest);
1397 }
1398
1399 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1400 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1401
1402 if (!dir)
1403 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1404 &tc_pct);
1405 else
1406 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1407 &tc_pct);
1eb4c977
DM		 1408 if (nla_put_u8(skb, i, tc_pct))
1409 goto nla_put_failure;
5b7f7626
SR		 1410 }
1411 nla_nest_end(skb, pg);
1412 return 0;
1413
1414nla_put_failure:
1415 return -EMSGSIZE;
1416}
1417
1418static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1419{
1420 struct nlattr *cee, *app;
1421 struct dcb_app_type *itr;
1422 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1423 int dcbx, i, err = -EMSGSIZE;
1424 u8 value;
1425
1eb4c977
DM		 1426 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1427 goto nla_put_failure;
5b7f7626
SR		 1428 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1429 if (!cee)
1430 goto nla_put_failure;
1431
1432 /* local pg */
1433 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1434 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1435 if (err)
1436 goto nla_put_failure;
1437 }
1438
1439 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1440 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1441 if (err)
1442 goto nla_put_failure;
1443 }
1444
1445 /* local pfc */
1446 if (ops->getpfccfg) {
1447 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1448
1449 if (!pfc_nest)
1450 goto nla_put_failure;
1451
1452 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1453 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
1eb4c977
DM		 1454 if (nla_put_u8(skb, i, value))
1455 goto nla_put_failure;
5b7f7626
SR		 1456 }
1457 nla_nest_end(skb, pfc_nest);
1458 }
1459
1460 /* local app */
1461 spin_lock(&dcb_lock);
1462 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1463 if (!app)
40f5d72a 1464 goto dcb_unlock;
5b7f7626
SR		 1465
1466 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1467 if (itr->ifindex == netdev->ifindex) {
5b7f7626
SR		 1468 struct nlattr *app_nest = nla_nest_start(skb,
1469 DCB_ATTR_APP);
1470 if (!app_nest)
1471 goto dcb_unlock;
1472
1473 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1474 itr->app.selector);
1475 if (err)
1476 goto dcb_unlock;
1477
1478 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1479 itr->app.protocol);
1480 if (err)
1481 goto dcb_unlock;
1482
1483 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1484 itr->app.priority);
1485 if (err)
1486 goto dcb_unlock;
1487
1488 nla_nest_end(skb, app_nest);
1489 }
1490 }
1491 nla_nest_end(skb, app);
1492
1493 if (netdev->dcbnl_ops->getdcbx)
1494 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1495 else
1496 dcbx = -EOPNOTSUPP;
1497
1498 spin_unlock(&dcb_lock);
1499
1500 /* features flags */
1501 if (ops->getfeatcfg) {
1502 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1503 if (!feat)
1504 goto nla_put_failure;
1505
1506 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1507 i++)
1eb4c977
DM		 1508 if (!ops->getfeatcfg(netdev, i, &value) &&
1509 nla_put_u8(skb, i, value))
1510 goto nla_put_failure;
5b7f7626
SR		 1511
1512 nla_nest_end(skb, feat);
1513 }
1514
1515 /* peer info if available */
1516 if (ops->cee_peer_getpg) {
1517 struct cee_pg pg;
1518 err = ops->cee_peer_getpg(netdev, &pg);
1eb4c977
DM		 1519 if (!err &&
1520 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1521 goto nla_put_failure;
5b7f7626
SR		 1522 }
1523
1524 if (ops->cee_peer_getpfc) {
1525 struct cee_pfc pfc;
1526 err = ops->cee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1527 if (!err &&
1528 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1529 goto nla_put_failure;
5b7f7626
SR		 1530 }
1531
1532 if (ops->peer_getappinfo && ops->peer_getapptable) {
1533 err = dcbnl_build_peer_app(netdev, skb,
1534 DCB_ATTR_CEE_PEER_APP_TABLE,
1535 DCB_ATTR_CEE_PEER_APP_INFO,
1536 DCB_ATTR_CEE_PEER_APP);
1537 if (err)
1538 goto nla_put_failure;
1539 }
1540 nla_nest_end(skb, cee);
1541
1542 /* DCBX state */
1543 if (dcbx >= 0) {
1544 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1545 if (err)
1546 goto nla_put_failure;
1547 }
1548 return 0;
1549
1550dcb_unlock:
1551 spin_unlock(&dcb_lock);
1552nla_put_failure:
1553 return err;
1554}
1555
1556static int dcbnl_notify(struct net_device *dev, int event, int cmd,
1557 u32 seq, u32 pid, int dcbx_ver)
314b4778
JF		 1558{
1559 struct net *net = dev_net(dev);
1560 struct sk_buff *skb;
1561 struct nlmsghdr *nlh;
1562 struct dcbmsg *dcb;
1563 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1564 int err;
1565
1566 if (!ops)
1567 return -EOPNOTSUPP;
1568
1569 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1570 if (!skb)
1571 return -ENOBUFS;
1572
1573 nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0);
1574 if (nlh == NULL) {
4d054f2f 1575 nlmsg_free(skb);
314b4778
JF		 1576 return -EMSGSIZE;
1577 }
1578
1579 dcb = NLMSG_DATA(nlh);
1580 dcb->dcb_family = AF_UNSPEC;
1581 dcb->cmd = cmd;
1582
5b7f7626
SR		 1583 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1584 err = dcbnl_ieee_fill(skb, dev);
1585 else
1586 err = dcbnl_cee_fill(skb, dev);
1587
314b4778
JF		 1588 if (err < 0) {
1589 /* Report error to broadcast listeners */
1590 nlmsg_cancel(skb, nlh);
1591 kfree_skb(skb);
1592 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1593 } else {
1594 /* End nlmsg and notify broadcast listeners */
1595 nlmsg_end(skb, nlh);
1596 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1597 }
1598
1599 return err;
1600}
5b7f7626
SR		 1601
1602int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
1603 u32 seq, u32 pid)
1604{
1605 return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_IEEE);
1606}
1607EXPORT_SYMBOL(dcbnl_ieee_notify);
1608
1609int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
1610 u32 seq, u32 pid)
1611{
1612 return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_CEE);
1613}
1614EXPORT_SYMBOL(dcbnl_cee_notify);
314b4778
JF		 1615
1616/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1617 * be completed the entire msg is aborted and error value is returned.
1618 * No attempt is made to reconcile the case where only part of the
1619 * cmd can be completed.
1620 */
1621static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1622 u32 pid, u32 seq, u16 flags)
1623{
1624 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1625 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1626 int err = -EOPNOTSUPP;
1627
1628 if (!ops)
1629 return err;
1630
4003b658
JF		 1631 if (!tb[DCB_ATTR_IEEE])
1632 return -EINVAL;
1633
314b4778
JF		 1634 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1635 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1636 if (err)
1637 return err;
1638
1639 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1640 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1641 err = ops->ieee_setets(netdev, ets);
1642 if (err)
1643 goto err;
1644 }
1645
08f10aff
AV		 1646 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1647 struct ieee_maxrate *maxrate =
1648 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1649 err = ops->ieee_setmaxrate(netdev, maxrate);
1650 if (err)
1651 goto err;
1652 }
1653
314b4778
JF		 1654 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1655 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1656 err = ops->ieee_setpfc(netdev, pfc);
1657 if (err)
1658 goto err;
1659 }
1660
1661 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1662 struct nlattr *attr;
1663 int rem;
1664
1665 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1666 struct dcb_app *app_data;
1667 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1668 continue;
1669 app_data = nla_data(attr);
1670 if (ops->ieee_setapp)
1671 err = ops->ieee_setapp(netdev, app_data);
1672 else
b6db2174 1673 err = dcb_ieee_setapp(netdev, app_data);
314b4778
JF		 1674 if (err)
1675 goto err;
1676 }
1677 }
1678
1679err:
1680 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1681 pid, seq, flags);
5b7f7626 1682 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
314b4778
JF		 1683 return err;
1684}
1685
1686static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1687 u32 pid, u32 seq, u16 flags)
1688{
1689 struct net *net = dev_net(netdev);
1690 struct sk_buff *skb;
1691 struct nlmsghdr *nlh;
1692 struct dcbmsg *dcb;
1693 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1694 int err;
1695
1696 if (!ops)
1697 return -EOPNOTSUPP;
1698
1699 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1700 if (!skb)
1701 return -ENOBUFS;
1702
1703 nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1704 if (nlh == NULL) {
4d054f2f 1705 nlmsg_free(skb);
314b4778
JF		 1706 return -EMSGSIZE;
1707 }
1708
1709 dcb = NLMSG_DATA(nlh);
1710 dcb->dcb_family = AF_UNSPEC;
1711 dcb->cmd = DCB_CMD_IEEE_GET;
1712
1713 err = dcbnl_ieee_fill(skb, netdev);
1714
1715 if (err < 0) {
1716 nlmsg_cancel(skb, nlh);
1717 kfree_skb(skb);
1718 } else {
1719 nlmsg_end(skb, nlh);
1720 err = rtnl_unicast(skb, net, pid);
1721 }
1722
1723 return err;
1724}
f9ae7e4b
JF		 1725
1726static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb,
1727 u32 pid, u32 seq, u16 flags)
1728{
1729 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1730 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1731 int err = -EOPNOTSUPP;
1732
1733 if (!ops)
1734 return -EOPNOTSUPP;
1735
1736 if (!tb[DCB_ATTR_IEEE])
1737 return -EINVAL;
1738
1739 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1740 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1741 if (err)
1742 return err;
1743
1744 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1745 struct nlattr *attr;
1746 int rem;
1747
1748 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1749 struct dcb_app *app_data;
1750
1751 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1752 continue;
1753 app_data = nla_data(attr);
1754 if (ops->ieee_delapp)
1755 err = ops->ieee_delapp(netdev, app_data);
1756 else
1757 err = dcb_ieee_delapp(netdev, app_data);
1758 if (err)
1759 goto err;
1760 }
1761 }
1762
1763err:
1764 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE,
1765 pid, seq, flags);
5b7f7626 1766 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
f9ae7e4b
JF		 1767 return err;
1768}
1769
1770
6241b625
SR		 1771/* DCBX configuration */
1772static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1773 u32 pid, u32 seq, u16 flags)
1774{
7f891cf1 1775 int ret;
6241b625
SR		 1776
1777 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1778 return -EOPNOTSUPP;
6241b625
SR		 1779
1780 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1781 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1782
1783 return ret;
1784}
1785
1786static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1787 u32 pid, u32 seq, u16 flags)
1788{
7f891cf1 1789 int ret;
6241b625
SR		 1790 u8 value;
1791
7f891cf1
SR		 1792 if (!netdev->dcbnl_ops->setdcbx)
1793 return -EOPNOTSUPP;
1794
1795 if (!tb[DCB_ATTR_DCBX])
1796 return -EINVAL;
6241b625
SR		 1797
1798 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1799
1800 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1801 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1802 pid, seq, flags);
1803
1804 return ret;
1805}
1806
ea45fe4e
SR		 1807static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1808 u32 pid, u32 seq, u16 flags)
1809{
1810 struct sk_buff *dcbnl_skb;
1811 struct nlmsghdr *nlh;
1812 struct dcbmsg *dcb;
1813 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1814 u8 value;
7f891cf1 1815 int ret, i;
ea45fe4e
SR		 1816 int getall = 0;
1817
7f891cf1
SR		 1818 if (!netdev->dcbnl_ops->getfeatcfg)
1819 return -EOPNOTSUPP;
1820
1821 if (!tb[DCB_ATTR_FEATCFG])
1822 return -EINVAL;
ea45fe4e
SR		 1823
1824 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1825 dcbnl_featcfg_nest);
7f891cf1 1826 if (ret)
ea45fe4e 1827 goto err_out;
ea45fe4e
SR		 1828
1829 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1830 if (!dcbnl_skb) {
7f891cf1 1831 ret = -ENOBUFS;
ea45fe4e
SR		 1832 goto err_out;
1833 }
1834
1835 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1836
1837 dcb = NLMSG_DATA(nlh);
1838 dcb->dcb_family = AF_UNSPEC;
1839 dcb->cmd = DCB_CMD_GFEATCFG;
1840
1841 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1842 if (!nest) {
7f891cf1
SR		 1843 ret = -EMSGSIZE;
1844 goto nla_put_failure;
ea45fe4e
SR		 1845 }
1846
1847 if (data[DCB_FEATCFG_ATTR_ALL])
1848 getall = 1;
1849
1850 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1851 if (!getall && !data[i])
1852 continue;
1853
1854 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1855 if (!ret)
ea45fe4e
SR		 1856 ret = nla_put_u8(dcbnl_skb, i, value);
1857
7f891cf1
SR		 1858 if (ret) {
1859 nla_nest_cancel(dcbnl_skb, nest);
1860 goto nla_put_failure;
1861 }
ea45fe4e
SR		 1862 }
1863 nla_nest_end(dcbnl_skb, nest);
1864
1865 nlmsg_end(dcbnl_skb, nlh);
1866
7f891cf1
SR		 1867 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1868nla_put_failure:
1869 nlmsg_cancel(dcbnl_skb, nlh);
ea45fe4e 1870nlmsg_failure:
ea45fe4e
SR		 1871 kfree_skb(dcbnl_skb);
1872err_out:
1873 return ret;
1874}
1875
1876static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1877 u32 pid, u32 seq, u16 flags)
1878{
1879 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1880 int ret, i;
ea45fe4e 1881 u8 value;
ea45fe4e 1882
7f891cf1
SR		 1883 if (!netdev->dcbnl_ops->setfeatcfg)
1884 return -ENOTSUPP;
1885
1886 if (!tb[DCB_ATTR_FEATCFG])
1887 return -EINVAL;
ea45fe4e
SR		 1888
1889 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1890 dcbnl_featcfg_nest);
1891
7f891cf1 1892 if (ret)
ea45fe4e 1893 goto err;
ea45fe4e
SR		 1894
1895 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1896 if (data[i] == NULL)
1897 continue;
1898
1899 value = nla_get_u8(data[i]);
1900
1901 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1902
1903 if (ret)
7f891cf1 1904 goto err;
ea45fe4e 1905 }
ea45fe4e 1906err:
7f891cf1
SR		 1907 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1908 pid, seq, flags);
1909
ea45fe4e
SR		 1910 return ret;
1911}
1912
dc6ed1df
SR		 1913/* Handle CEE DCBX GET commands. */
1914static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
1915 u32 pid, u32 seq, u16 flags)
1916{
5b7f7626 1917 struct net *net = dev_net(netdev);
dc6ed1df
SR		 1918 struct sk_buff *skb;
1919 struct nlmsghdr *nlh;
1920 struct dcbmsg *dcb;
dc6ed1df 1921 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
5b7f7626 1922 int err;
dc6ed1df
SR		 1923
1924 if (!ops)
1925 return -EOPNOTSUPP;
1926
1927 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1928 if (!skb)
1929 return -ENOBUFS;
1930
5b7f7626
SR		 1931 nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1932 if (nlh == NULL) {
1933 nlmsg_free(skb);
1934 return -EMSGSIZE;
1935 }
dc6ed1df
SR		 1936
1937 dcb = NLMSG_DATA(nlh);
1938 dcb->dcb_family = AF_UNSPEC;
1939 dcb->cmd = DCB_CMD_CEE_GET;
1940
5b7f7626 1941 err = dcbnl_cee_fill(skb, netdev);
37cf4d1a 1942
5b7f7626
SR		 1943 if (err < 0) {
1944 nlmsg_cancel(skb, nlh);
1945 nlmsg_free(skb);
1946 } else {
1947 nlmsg_end(skb, nlh);
1948 err = rtnl_unicast(skb, net, pid);
37cf4d1a 1949 }
37cf4d1a 1950 return err;
dc6ed1df
SR		 1951}
1952
33a03aad
TG		 1953struct reply_func {
1954 /* reply netlink message type */
1955 int type;
1956
1957 /* function to fill message contents */
1958 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1959 struct nlattr **, struct sk_buff *);
1960};
1961
1962static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
1963 /* FIXME: add reply defs */
1964};
1965
2f90b865
AD		 1966static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1967{
1968 struct net *net = sock_net(skb->sk);
1969 struct net_device *netdev;
1970 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1971 struct nlattr *tb[DCB_ATTR_MAX + 1];
1972 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1973 int ret = -EINVAL;
33a03aad
TG		 1974 struct sk_buff *reply_skb;
1975 struct nlmsghdr *reply_nlh;
1976 const struct reply_func *fn;
2f90b865 1977
09ad9bc7 1978 if (!net_eq(net, &init_net))
2f90b865
AD		 1979 return -EINVAL;
1980
1981 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1982 dcbnl_rtnl_policy);
1983 if (ret < 0)
1984 return ret;
1985
33a03aad
TG		 1986 if (dcb->cmd > DCB_CMD_MAX)
1987 return -EINVAL;
1988
1989 /* check if a reply function has been defined for the command */
1990 fn = &reply_funcs[dcb->cmd];
1991 if (!fn->cb)
1992 return -EOPNOTSUPP;
1993
2f90b865
AD		 1994 if (!tb[DCB_ATTR_IFNAME])
1995 return -EINVAL;
1996
1997 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1998 if (!netdev)
1999 return -EINVAL;
2000
2001 if (!netdev->dcbnl_ops)
2002 goto errout;
2003
33a03aad
TG		 2004 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, pid, nlh->nlmsg_seq,
2005 nlh->nlmsg_flags, &reply_nlh);
2006 if (!reply_skb) {
2007 ret = -ENOBUFS;
2008 goto out;
2009 }
2010
2011 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
2012 if (ret < 0) {
2013 nlmsg_free(reply_skb);
2014 goto out;
2015 }
2016
2017 nlmsg_end(reply_skb, reply_nlh);
2018
2019 ret = rtnl_unicast(reply_skb, &init_net, pid);
2020 if (ret)
2021 goto out;
2022
2f90b865
AD		 2023 switch (dcb->cmd) {
2024 case DCB_CMD_GSTATE:
2025 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
2026 nlh->nlmsg_flags);
2027 goto out;
2028 case DCB_CMD_PFC_GCFG:
2029 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
2030 nlh->nlmsg_flags);
2031 goto out;
2032 case DCB_CMD_GPERM_HWADDR:
2033 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
2034 nlh->nlmsg_flags);
2035 goto out;
2036 case DCB_CMD_PGTX_GCFG:
2037 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
2038 nlh->nlmsg_flags);
2039 goto out;
2040 case DCB_CMD_PGRX_GCFG:
2041 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
2042 nlh->nlmsg_flags);
2043 goto out;
859ee3c4
AD		 2044 case DCB_CMD_BCN_GCFG:
2045 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
2046 nlh->nlmsg_flags);
2047 goto out;
2f90b865
AD		 2048 case DCB_CMD_SSTATE:
2049 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
2050 nlh->nlmsg_flags);
2051 goto out;
2052 case DCB_CMD_PFC_SCFG:
2053 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
2054 nlh->nlmsg_flags);
2055 goto out;
2056
2057 case DCB_CMD_SET_ALL:
2058 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
2059 nlh->nlmsg_flags);
2060 goto out;
2061 case DCB_CMD_PGTX_SCFG:
2062 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
2063 nlh->nlmsg_flags);
2064 goto out;
2065 case DCB_CMD_PGRX_SCFG:
2066 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
2067 nlh->nlmsg_flags);
2068 goto out;
46132188
AD		 2069 case DCB_CMD_GCAP:
2070 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
2071 nlh->nlmsg_flags);
2072 goto out;
33dbabc4
AD		 2073 case DCB_CMD_GNUMTCS:
2074 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
2075 nlh->nlmsg_flags);
2076 goto out;
2077 case DCB_CMD_SNUMTCS:
2078 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
2079 nlh->nlmsg_flags);
2080 goto out;
0eb3aa9b
AD		 2081 case DCB_CMD_PFC_GSTATE:
2082 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
2083 nlh->nlmsg_flags);
2084 goto out;
2085 case DCB_CMD_PFC_SSTATE:
2086 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
2087 nlh->nlmsg_flags);
2088 goto out;
859ee3c4
AD		 2089 case DCB_CMD_BCN_SCFG:
2090 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
2091 nlh->nlmsg_flags);
2092 goto out;
57949686
YZ		 2093 case DCB_CMD_GAPP:
2094 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
2095 nlh->nlmsg_flags);
2096 goto out;
2097 case DCB_CMD_SAPP:
2098 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
2099 nlh->nlmsg_flags);
2100 goto out;
3e29027a
JF		 2101 case DCB_CMD_IEEE_SET:
2102 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
f9ae7e4b 2103 nlh->nlmsg_flags);
3e29027a
JF		 2104 goto out;
2105 case DCB_CMD_IEEE_GET:
2106 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
f9ae7e4b
JF		 2107 nlh->nlmsg_flags);
2108 goto out;
2109 case DCB_CMD_IEEE_DEL:
2110 ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq,
2111 nlh->nlmsg_flags);
3e29027a 2112 goto out;
6241b625
SR		 2113 case DCB_CMD_GDCBX:
2114 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
2115 nlh->nlmsg_flags);
2116 goto out;
2117 case DCB_CMD_SDCBX:
2118 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
2119 nlh->nlmsg_flags);
2120 goto out;
ea45fe4e
SR		 2121 case DCB_CMD_GFEATCFG:
2122 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
2123 nlh->nlmsg_flags);
2124 goto out;
2125 case DCB_CMD_SFEATCFG:
2126 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
2127 nlh->nlmsg_flags);
2128 goto out;
dc6ed1df
SR		 2129 case DCB_CMD_CEE_GET:
2130 ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
2131 nlh->nlmsg_flags);
2132 goto out;
2f90b865
AD		 2133 default:
2134 goto errout;
2135 }
2136errout:
2137 ret = -EINVAL;
2138out:
2139 dev_put(netdev);
2140 return ret;
2141}
2142
9ab933ab
JF		 2143/**
2144 * dcb_getapp - retrieve the DCBX application user priority
2145 *
2146 * On success returns a non-zero 802.1p user priority bitmap
2147 * otherwise returns 0 as the invalid user priority bitmap to
2148 * indicate an error.
2149 */
2150u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
2151{
2152 struct dcb_app_type *itr;
2153 u8 prio = 0;
2154
2155 spin_lock(&dcb_lock);
2156 list_for_each_entry(itr, &dcb_app_list, list) {
2157 if (itr->app.selector == app->selector &&
2158 itr->app.protocol == app->protocol &&
e290ed81 2159 itr->ifindex == dev->ifindex) {
9ab933ab
JF		 2160 prio = itr->app.priority;
2161 break;
2162 }
2163 }
2164 spin_unlock(&dcb_lock);
2165
2166 return prio;
2167}
2168EXPORT_SYMBOL(dcb_getapp);
2169
2170/**
b6db2174 2171 * dcb_setapp - add CEE dcb application data to app list
9ab933ab 2172 *
b6db2174
JF		 2173 * Priority 0 is an invalid priority in CEE spec. This routine
2174 * removes applications from the app list if the priority is
2175 * set to zero.
9ab933ab 2176 */
ab6baf98 2177int dcb_setapp(struct net_device *dev, struct dcb_app *new)
9ab933ab
JF		 2178{
2179 struct dcb_app_type *itr;
7ec79270
JF		 2180 struct dcb_app_type event;
2181
e290ed81 2182 event.ifindex = dev->ifindex;
7ec79270 2183 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 2184 if (dev->dcbnl_ops->getdcbx)
2185 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
9ab933ab
JF		 2186
2187 spin_lock(&dcb_lock);
2188 /* Search for existing match and replace */
2189 list_for_each_entry(itr, &dcb_app_list, list) {
2190 if (itr->app.selector == new->selector &&
2191 itr->app.protocol == new->protocol &&
e290ed81 2192 itr->ifindex == dev->ifindex) {
9ab933ab
JF		 2193 if (new->priority)
2194 itr->app.priority = new->priority;
2195 else {
2196 list_del(&itr->list);
2197 kfree(itr);
2198 }
2199 goto out;
2200 }
2201 }
2202 /* App type does not exist add new application type */
2203 if (new->priority) {
2204 struct dcb_app_type *entry;
2205 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
2206 if (!entry) {
2207 spin_unlock(&dcb_lock);
2208 return -ENOMEM;
2209 }
2210
2211 memcpy(&entry->app, new, sizeof(*new));
e290ed81 2212 entry->ifindex = dev->ifindex;
9ab933ab
JF		 2213 list_add(&entry->list, &dcb_app_list);
2214 }
2215out:
2216 spin_unlock(&dcb_lock);
7ec79270 2217 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
9ab933ab
JF		 2218 return 0;
2219}
2220EXPORT_SYMBOL(dcb_setapp);
2221
a364c8cf
JF		 2222/**
2223 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
2224 *
2225 * Helper routine which on success returns a non-zero 802.1Qaz user
2226 * priority bitmap otherwise returns 0 to indicate the dcb_app was
2227 * not found in APP list.
2228 */
2229u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
2230{
2231 struct dcb_app_type *itr;
2232 u8 prio = 0;
2233
2234 spin_lock(&dcb_lock);
2235 list_for_each_entry(itr, &dcb_app_list, list) {
2236 if (itr->app.selector == app->selector &&
2237 itr->app.protocol == app->protocol &&
e290ed81 2238 itr->ifindex == dev->ifindex) {
a364c8cf
JF		 2239 prio |= 1 << itr->app.priority;
2240 }
2241 }
2242 spin_unlock(&dcb_lock);
2243
2244 return prio;
2245}
2246EXPORT_SYMBOL(dcb_ieee_getapp_mask);
2247
b6db2174
JF		 2248/**
2249 * dcb_ieee_setapp - add IEEE dcb application data to app list
2250 *
2251 * This adds Application data to the list. Multiple application
2252 * entries may exists for the same selector and protocol as long
2253 * as the priorities are different.
2254 */
2255int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
2256{
2257 struct dcb_app_type *itr, *entry;
2258 struct dcb_app_type event;
2259 int err = 0;
2260
e290ed81 2261 event.ifindex = dev->ifindex;
b6db2174 2262 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 2263 if (dev->dcbnl_ops->getdcbx)
2264 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
b6db2174
JF		 2265
2266 spin_lock(&dcb_lock);
2267 /* Search for existing match and abort if found */
2268 list_for_each_entry(itr, &dcb_app_list, list) {
2269 if (itr->app.selector == new->selector &&
2270 itr->app.protocol == new->protocol &&
2271 itr->app.priority == new->priority &&
e290ed81 2272 itr->ifindex == dev->ifindex) {
b6db2174
JF		 2273 err = -EEXIST;
2274 goto out;
2275 }
2276 }
2277
2278 /* App entry does not exist add new entry */
2279 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
2280 if (!entry) {
2281 err = -ENOMEM;
2282 goto out;
2283 }
2284
2285 memcpy(&entry->app, new, sizeof(*new));
e290ed81 2286 entry->ifindex = dev->ifindex;
b6db2174
JF		 2287 list_add(&entry->list, &dcb_app_list);
2288out:
2289 spin_unlock(&dcb_lock);
2290 if (!err)
2291 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
2292 return err;
2293}
2294EXPORT_SYMBOL(dcb_ieee_setapp);
2295
f9ae7e4b
JF		 2296/**
2297 * dcb_ieee_delapp - delete IEEE dcb application data from list
2298 *
2299 * This removes a matching APP data from the APP list
2300 */
2301int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
2302{
2303 struct dcb_app_type *itr;
2304 struct dcb_app_type event;
2305 int err = -ENOENT;
2306
e290ed81 2307 event.ifindex = dev->ifindex;
f9ae7e4b 2308 memcpy(&event.app, del, sizeof(event.app));
6bd0e1cb
JF		 2309 if (dev->dcbnl_ops->getdcbx)
2310 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
f9ae7e4b
JF		 2311
2312 spin_lock(&dcb_lock);
2313 /* Search for existing match and remove it. */
2314 list_for_each_entry(itr, &dcb_app_list, list) {
2315 if (itr->app.selector == del->selector &&
2316 itr->app.protocol == del->protocol &&
2317 itr->app.priority == del->priority &&
e290ed81 2318 itr->ifindex == dev->ifindex) {
f9ae7e4b
JF		 2319 list_del(&itr->list);
2320 kfree(itr);
2321 err = 0;
2322 goto out;
2323 }
2324 }
2325
2326out:
2327 spin_unlock(&dcb_lock);
2328 if (!err)
2329 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
2330 return err;
2331}
2332EXPORT_SYMBOL(dcb_ieee_delapp);
2333
7c14c3f1 2334static void dcb_flushapp(void)
9ab933ab
JF		 2335{
2336 struct dcb_app_type *app;
2a8fe003 2337 struct dcb_app_type *tmp;
9ab933ab
JF		 2338
2339 spin_lock(&dcb_lock);
2a8fe003 2340 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
9ab933ab
JF		 2341 list_del(&app->list);
2342 kfree(app);
2343 }
2344 spin_unlock(&dcb_lock);
2345}
2346
2f90b865
AD		 2347static int __init dcbnl_init(void)
2348{
9ab933ab
JF		 2349 INIT_LIST_HEAD(&dcb_app_list);
2350
c7ac8679
GR		 2351 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
2352 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
2f90b865
AD		 2353
2354 return 0;
2355}
2356module_init(dcbnl_init);
2357
2358static void __exit dcbnl_exit(void)
2359{
2360 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
2361 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
9ab933ab 2362 dcb_flushapp();
2f90b865
AD		 2363}
2364module_exit(dcbnl_exit);
Linux kernel - Deliverables
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