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Merge tag 'v4.10-rc1' into patchwork
[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
c057b190 14 * this program; if not, see <http://www.gnu.org/licenses/>.
2f90b865 15 *
36b9ad80 16 * Description: Data Center Bridging netlink interface
2f90b865
AD		 17 * Author: Lucy Liu <[email protected]>
18 */
19
20#include <linux/netdevice.h>
21#include <linux/netlink.h>
5a0e3ad6 22#include <linux/slab.h>
2f90b865
AD		 23#include <net/netlink.h>
24#include <net/rtnetlink.h>
25#include <linux/dcbnl.h>
96b99684 26#include <net/dcbevent.h>
2f90b865 27#include <linux/rtnetlink.h>
36b9ad80 28#include <linux/init.h>
2f90b865
AD		 29#include <net/sock.h>
30
ae86b9e3 31/* Data Center Bridging (DCB) is a collection of Ethernet enhancements
2f90b865
AD		 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
2f90b865
AD		 52/**************** DCB attribute policies *************************************/
53
54/* DCB netlink attributes policy */
b54452b0 55static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 56 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
57 [DCB_ATTR_STATE] = {.type = NLA_U8},
58 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
59 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
60 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
2f90b865 61 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 62 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
63 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
64 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 65 [DCB_ATTR_APP] = {.type = NLA_NESTED},
3e29027a 66 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
6241b625 67 [DCB_ATTR_DCBX] = {.type = NLA_U8},
ea45fe4e 68 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
2f90b865
AD		 69};
70
71/* DCB priority flow control to User Priority nested attributes */
b54452b0 72static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
2f90b865
AD		 73 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
74 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
75 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
76 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
77 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
82};
83
84/* DCB priority grouping nested attributes */
b54452b0 85static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
2f90b865
AD		 86 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
87 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
88 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
89 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
90 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
96 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
97 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
98 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
99 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
104};
105
106/* DCB traffic class nested attributes. */
b54452b0 107static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
2f90b865
AD		 108 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
109 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
110 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
111 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
112 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
113};
114
46132188 115/* DCB capabilities nested attributes. */
b54452b0 116static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
46132188
AD		 117 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
118 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
119 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
120 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
121 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
122 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
6241b625 125 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
46132188 126};
2f90b865 127
33dbabc4 128/* DCB capabilities nested attributes. */
b54452b0 129static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
33dbabc4
AD		 130 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
131 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
132 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
133};
134
859ee3c4 135/* DCB BCN nested attributes. */
b54452b0 136static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
859ee3c4
AD		 137 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
138 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
139 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
140 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
141 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
f4314e81
DS		 146 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
147 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 148 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
149 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
150 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
152 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
162};
163
6fa382af 164/* DCB APP nested attributes. */
b54452b0 165static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
6fa382af
YZ		 166 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
167 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
168 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
169};
170
3e29027a
JF		 171/* IEEE 802.1Qaz nested attributes. */
172static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
173 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
174 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
175 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
08f10aff 176 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
c9368247
SM		 177 [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)},
178 [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)},
3e29027a
JF		 179};
180
181static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
182 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
183};
184
ea45fe4e
SR		 185/* DCB number of traffic classes nested attributes. */
186static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
187 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
188 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
189 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
190 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
191};
192
9ab933ab
JF		 193static LIST_HEAD(dcb_app_list);
194static DEFINE_SPINLOCK(dcb_lock);
195
33a03aad
TG		 196static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
197 u32 flags, struct nlmsghdr **nlhp)
198{
199 struct sk_buff *skb;
200 struct dcbmsg *dcb;
201 struct nlmsghdr *nlh;
202
203 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
204 if (!skb)
205 return NULL;
206
207 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
b3908e22 208 BUG_ON(!nlh);
33a03aad
TG		 209
210 dcb = nlmsg_data(nlh);
211 dcb->dcb_family = AF_UNSPEC;
212 dcb->cmd = cmd;
213 dcb->dcb_pad = 0;
214
215 if (nlhp)
216 *nlhp = nlh;
217
218 return skb;
219}
220
7be99413
TG		 221static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
222 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 223{
2f90b865
AD		 224 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
225 if (!netdev->dcbnl_ops->getstate)
3d1f4869 226 return -EOPNOTSUPP;
2f90b865 227
7be99413
TG		 228 return nla_put_u8(skb, DCB_ATTR_STATE,
229 netdev->dcbnl_ops->getstate(netdev));
2f90b865
AD		 230}
231
7be99413
TG		 232static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
233 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 234{
2f90b865
AD		 235 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
236 u8 value;
3d1f4869 237 int ret;
2f90b865
AD		 238 int i;
239 int getall = 0;
240
3d1f4869
TG		 241 if (!tb[DCB_ATTR_PFC_CFG])
242 return -EINVAL;
243
244 if (!netdev->dcbnl_ops->getpfccfg)
245 return -EOPNOTSUPP;
2f90b865
AD		 246
247 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
248 tb[DCB_ATTR_PFC_CFG],
249 dcbnl_pfc_up_nest);
250 if (ret)
3d1f4869 251 return ret;
2f90b865 252
7be99413 253 nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
2f90b865 254 if (!nest)
3d1f4869 255 return -EMSGSIZE;
2f90b865
AD		 256
257 if (data[DCB_PFC_UP_ATTR_ALL])
258 getall = 1;
259
260 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
261 if (!getall && !data[i])
262 continue;
263
264 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
265 &value);
7be99413 266 ret = nla_put_u8(skb, i, value);
2f90b865 267 if (ret) {
7be99413 268 nla_nest_cancel(skb, nest);
3d1f4869 269 return ret;
2f90b865
AD		 270 }
271 }
7be99413 272 nla_nest_end(skb, nest);
2f90b865
AD		 273
274 return 0;
2f90b865
AD		 275}
276
7be99413
TG		 277static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
278 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 279{
2f90b865 280 u8 perm_addr[MAX_ADDR_LEN];
2f90b865
AD		 281
282 if (!netdev->dcbnl_ops->getpermhwaddr)
3d1f4869 283 return -EOPNOTSUPP;
2f90b865 284
29cd8ae0 285 memset(perm_addr, 0, sizeof(perm_addr));
2f90b865
AD		 286 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
287
7be99413 288 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
2f90b865
AD		 289}
290
7be99413
TG		 291static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
292 u32 seq, struct nlattr **tb, struct sk_buff *skb)
46132188 293{
46132188
AD		 294 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
295 u8 value;
3d1f4869 296 int ret;
46132188
AD		 297 int i;
298 int getall = 0;
299
3d1f4869
TG		 300 if (!tb[DCB_ATTR_CAP])
301 return -EINVAL;
302
303 if (!netdev->dcbnl_ops->getcap)
304 return -EOPNOTSUPP;
46132188
AD		 305
306 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
307 dcbnl_cap_nest);
308 if (ret)
3d1f4869 309 return ret;
46132188 310
7be99413 311 nest = nla_nest_start(skb, DCB_ATTR_CAP);
46132188 312 if (!nest)
3d1f4869 313 return -EMSGSIZE;
46132188
AD		 314
315 if (data[DCB_CAP_ATTR_ALL])
316 getall = 1;
317
318 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
319 if (!getall && !data[i])
320 continue;
321
322 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
7be99413 323 ret = nla_put_u8(skb, i, value);
46132188 324 if (ret) {
7be99413 325 nla_nest_cancel(skb, nest);
3d1f4869 326 return ret;
46132188
AD		 327 }
328 }
329 }
7be99413 330 nla_nest_end(skb, nest);
46132188
AD		 331
332 return 0;
46132188
AD		 333}
334
7be99413
TG		 335static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
336 u32 seq, struct nlattr **tb, struct sk_buff *skb)
33dbabc4 337{
33dbabc4
AD		 338 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
339 u8 value;
3d1f4869 340 int ret;
33dbabc4
AD		 341 int i;
342 int getall = 0;
343
3d1f4869
TG		 344 if (!tb[DCB_ATTR_NUMTCS])
345 return -EINVAL;
346
347 if (!netdev->dcbnl_ops->getnumtcs)
348 return -EOPNOTSUPP;
33dbabc4
AD		 349
350 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
351 dcbnl_numtcs_nest);
3d1f4869
TG		 352 if (ret)
353 return ret;
33dbabc4 354
7be99413 355 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
3d1f4869
TG		 356 if (!nest)
357 return -EMSGSIZE;
33dbabc4
AD		 358
359 if (data[DCB_NUMTCS_ATTR_ALL])
360 getall = 1;
361
362 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
363 if (!getall && !data[i])
364 continue;
365
366 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
367 if (!ret) {
7be99413 368 ret = nla_put_u8(skb, i, value);
33dbabc4 369 if (ret) {
7be99413 370 nla_nest_cancel(skb, nest);
3d1f4869 371 return ret;
33dbabc4 372 }
3d1f4869
TG		 373 } else
374 return -EINVAL;
33dbabc4 375 }
7be99413 376 nla_nest_end(skb, nest);
33dbabc4
AD		 377
378 return 0;
33dbabc4
AD		 379}
380
7be99413
TG		 381static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
382 u32 seq, struct nlattr **tb, struct sk_buff *skb)
33dbabc4
AD		 383{
384 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
3d1f4869 385 int ret;
33dbabc4
AD		 386 u8 value;
387 int i;
388
3d1f4869
TG		 389 if (!tb[DCB_ATTR_NUMTCS])
390 return -EINVAL;
391
392 if (!netdev->dcbnl_ops->setnumtcs)
393 return -EOPNOTSUPP;
33dbabc4
AD		 394
395 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
396 dcbnl_numtcs_nest);
7be99413 397 if (ret)
3d1f4869 398 return ret;
33dbabc4
AD		 399
400 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
401 if (data[i] == NULL)
402 continue;
403
404 value = nla_get_u8(data[i]);
405
406 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
33dbabc4 407 if (ret)
7be99413 408 break;
33dbabc4
AD		 409 }
410
7be99413 411 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
33dbabc4
AD		 412}
413
7be99413
TG		 414static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
415 u32 seq, struct nlattr **tb, struct sk_buff *skb)
0eb3aa9b 416{
0eb3aa9b 417 if (!netdev->dcbnl_ops->getpfcstate)
3d1f4869 418 return -EOPNOTSUPP;
0eb3aa9b 419
7be99413
TG		 420 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
421 netdev->dcbnl_ops->getpfcstate(netdev));
0eb3aa9b
AD		 422}
423
7be99413
TG		 424static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
425 u32 seq, struct nlattr **tb, struct sk_buff *skb)
0eb3aa9b 426{
0eb3aa9b
AD		 427 u8 value;
428
3d1f4869 429 if (!tb[DCB_ATTR_PFC_STATE])
7be99413 430 return -EINVAL;
0eb3aa9b 431
3d1f4869
TG		 432 if (!netdev->dcbnl_ops->setpfcstate)
433 return -EOPNOTSUPP;
434
0eb3aa9b
AD		 435 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
436
437 netdev->dcbnl_ops->setpfcstate(netdev, value);
438
7be99413 439 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
0eb3aa9b
AD		 440}
441
7be99413
TG		 442static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
443 u32 seq, struct nlattr **tb, struct sk_buff *skb)
57949686 444{
57949686
YZ		 445 struct nlattr *app_nest;
446 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
447 u16 id;
448 u8 up, idtype;
3d1f4869 449 int ret;
57949686 450
3dce38a0 451 if (!tb[DCB_ATTR_APP])
3d1f4869 452 return -EINVAL;
57949686
YZ		 453
454 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
455 dcbnl_app_nest);
456 if (ret)
3d1f4869 457 return ret;
57949686 458
57949686
YZ		 459 /* all must be non-null */
460 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
461 (!app_tb[DCB_APP_ATTR_ID]))
3d1f4869 462 return -EINVAL;
57949686
YZ		 463
464 /* either by eth type or by socket number */
465 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
466 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
467 (idtype != DCB_APP_IDTYPE_PORTNUM))
3d1f4869 468 return -EINVAL;
57949686
YZ		 469
470 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
3dce38a0
JF		 471
472 if (netdev->dcbnl_ops->getapp) {
c2659479
AB		 473 ret = netdev->dcbnl_ops->getapp(netdev, idtype, id);
474 if (ret < 0)
475 return ret;
476 else
477 up = ret;
3dce38a0
JF		 478 } else {
479 struct dcb_app app = {
480 .selector = idtype,
481 .protocol = id,
482 };
483 up = dcb_getapp(netdev, &app);
484 }
57949686 485
7be99413 486 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
d3337de5 487 if (!app_nest)
3d1f4869 488 return -EMSGSIZE;
d3337de5 489
7be99413 490 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
57949686
YZ		 491 if (ret)
492 goto out_cancel;
493
7be99413 494 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
57949686
YZ		 495 if (ret)
496 goto out_cancel;
497
7be99413 498 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
57949686
YZ		 499 if (ret)
500 goto out_cancel;
501
7be99413 502 nla_nest_end(skb, app_nest);
57949686 503
3d1f4869 504 return 0;
57949686
YZ		 505
506out_cancel:
7be99413 507 nla_nest_cancel(skb, app_nest);
57949686
YZ		 508 return ret;
509}
510
7be99413
TG		 511static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
512 u32 seq, struct nlattr **tb, struct sk_buff *skb)
57949686 513{
3d1f4869 514 int ret;
57949686
YZ		 515 u16 id;
516 u8 up, idtype;
517 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
518
9ab933ab 519 if (!tb[DCB_ATTR_APP])
3d1f4869 520 return -EINVAL;
57949686
YZ		 521
522 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
523 dcbnl_app_nest);
524 if (ret)
3d1f4869 525 return ret;
57949686 526
57949686
YZ		 527 /* all must be non-null */
528 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
529 (!app_tb[DCB_APP_ATTR_ID]) ||
530 (!app_tb[DCB_APP_ATTR_PRIORITY]))
3d1f4869 531 return -EINVAL;
57949686
YZ		 532
533 /* either by eth type or by socket number */
534 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
535 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
536 (idtype != DCB_APP_IDTYPE_PORTNUM))
3d1f4869 537 return -EINVAL;
57949686
YZ		 538
539 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
540 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
541
9ab933ab 542 if (netdev->dcbnl_ops->setapp) {
3d1f4869 543 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
c2659479
AB		 544 if (ret < 0)
545 return ret;
9ab933ab
JF		 546 } else {
547 struct dcb_app app;
548 app.selector = idtype;
549 app.protocol = id;
550 app.priority = up;
3d1f4869 551 ret = dcb_setapp(netdev, &app);
9ab933ab
JF		 552 }
553
7be99413 554 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
08157984 555 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
3d1f4869 556
57949686
YZ		 557 return ret;
558}
559
7be99413
TG		 560static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
561 struct nlattr **tb, struct sk_buff *skb, int dir)
2f90b865 562{
2f90b865
AD		 563 struct nlattr *pg_nest, *param_nest, *data;
564 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
565 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
566 u8 prio, pgid, tc_pct, up_map;
3d1f4869 567 int ret;
2f90b865
AD		 568 int getall = 0;
569 int i;
570
3d1f4869
TG		 571 if (!tb[DCB_ATTR_PG_CFG])
572 return -EINVAL;
573
574 if (!netdev->dcbnl_ops->getpgtccfgtx ||
2f90b865
AD		 575 !netdev->dcbnl_ops->getpgtccfgrx ||
576 !netdev->dcbnl_ops->getpgbwgcfgtx ||
577 !netdev->dcbnl_ops->getpgbwgcfgrx)
3d1f4869 578 return -EOPNOTSUPP;
2f90b865
AD		 579
580 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
581 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
2f90b865 582 if (ret)
3d1f4869 583 return ret;
2f90b865 584
7be99413 585 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
2f90b865 586 if (!pg_nest)
3d1f4869 587 return -EMSGSIZE;
2f90b865
AD		 588
589 if (pg_tb[DCB_PG_ATTR_TC_ALL])
590 getall = 1;
591
592 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
593 if (!getall && !pg_tb[i])
594 continue;
595
596 if (pg_tb[DCB_PG_ATTR_TC_ALL])
597 data = pg_tb[DCB_PG_ATTR_TC_ALL];
598 else
599 data = pg_tb[i];
600 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
601 data, dcbnl_tc_param_nest);
602 if (ret)
603 goto err_pg;
604
7be99413 605 param_nest = nla_nest_start(skb, i);
2f90b865
AD		 606 if (!param_nest)
607 goto err_pg;
608
609 pgid = DCB_ATTR_VALUE_UNDEFINED;
610 prio = DCB_ATTR_VALUE_UNDEFINED;
611 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
612 up_map = DCB_ATTR_VALUE_UNDEFINED;
613
614 if (dir) {
615 /* Rx */
616 netdev->dcbnl_ops->getpgtccfgrx(netdev,
617 i - DCB_PG_ATTR_TC_0, &prio,
618 &pgid, &tc_pct, &up_map);
619 } else {
620 /* Tx */
621 netdev->dcbnl_ops->getpgtccfgtx(netdev,
622 i - DCB_PG_ATTR_TC_0, &prio,
623 &pgid, &tc_pct, &up_map);
624 }
625
626 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
627 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 628 ret = nla_put_u8(skb,
2f90b865
AD		 629 DCB_TC_ATTR_PARAM_PGID, pgid);
630 if (ret)
631 goto err_param;
632 }
633 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
634 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 635 ret = nla_put_u8(skb,
2f90b865
AD		 636 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
637 if (ret)
638 goto err_param;
639 }
640 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
641 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 642 ret = nla_put_u8(skb,
2f90b865
AD		 643 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
644 if (ret)
645 goto err_param;
646 }
647 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
648 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 649 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
2f90b865
AD		 650 tc_pct);
651 if (ret)
652 goto err_param;
653 }
7be99413 654 nla_nest_end(skb, param_nest);
2f90b865
AD		 655 }
656
657 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
658 getall = 1;
659 else
660 getall = 0;
661
662 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
663 if (!getall && !pg_tb[i])
664 continue;
665
666 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
667
668 if (dir) {
669 /* Rx */
670 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
671 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
672 } else {
673 /* Tx */
674 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
675 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
676 }
7be99413 677 ret = nla_put_u8(skb, i, tc_pct);
2f90b865
AD		 678 if (ret)
679 goto err_pg;
680 }
681
7be99413 682 nla_nest_end(skb, pg_nest);
2f90b865
AD		 683
684 return 0;
685
686err_param:
7be99413 687 nla_nest_cancel(skb, param_nest);
2f90b865 688err_pg:
7be99413 689 nla_nest_cancel(skb, pg_nest);
3d1f4869
TG		 690
691 return -EMSGSIZE;
2f90b865
AD		 692}
693
7be99413
TG		 694static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
695 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 696{
7be99413 697 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
2f90b865
AD		 698}
699
7be99413
TG		 700static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
701 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 702{
7be99413 703 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
2f90b865
AD		 704}
705
7be99413
TG		 706static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
707 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 708{
2f90b865
AD		 709 u8 value;
710
3d1f4869 711 if (!tb[DCB_ATTR_STATE])
7be99413 712 return -EINVAL;
2f90b865 713
3d1f4869
TG		 714 if (!netdev->dcbnl_ops->setstate)
715 return -EOPNOTSUPP;
716
2f90b865
AD		 717 value = nla_get_u8(tb[DCB_ATTR_STATE]);
718
7be99413
TG		 719 return nla_put_u8(skb, DCB_ATTR_STATE,
720 netdev->dcbnl_ops->setstate(netdev, value));
2f90b865
AD		 721}
722
7be99413
TG		 723static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
724 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865
AD		 725{
726 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
727 int i;
3d1f4869 728 int ret;
2f90b865
AD		 729 u8 value;
730
3d1f4869
TG		 731 if (!tb[DCB_ATTR_PFC_CFG])
732 return -EINVAL;
733
734 if (!netdev->dcbnl_ops->setpfccfg)
735 return -EOPNOTSUPP;
2f90b865
AD		 736
737 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
738 tb[DCB_ATTR_PFC_CFG],
739 dcbnl_pfc_up_nest);
740 if (ret)
3d1f4869 741 return ret;
2f90b865
AD		 742
743 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
744 if (data[i] == NULL)
745 continue;
746 value = nla_get_u8(data[i]);
747 netdev->dcbnl_ops->setpfccfg(netdev,
748 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
749 }
750
7be99413 751 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
2f90b865
AD		 752}
753
7be99413
TG		 754static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
755 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 756{
3d1f4869 757 int ret;
2f90b865 758
3d1f4869
TG		 759 if (!tb[DCB_ATTR_SET_ALL])
760 return -EINVAL;
761
762 if (!netdev->dcbnl_ops->setall)
763 return -EOPNOTSUPP;
2f90b865 764
7be99413
TG		 765 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
766 netdev->dcbnl_ops->setall(netdev));
08157984 767 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
2f90b865
AD		 768
769 return ret;
770}
771
7be99413
TG		 772static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
773 u32 seq, struct nlattr **tb, struct sk_buff *skb,
774 int dir)
2f90b865
AD		 775{
776 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
777 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
3d1f4869 778 int ret;
2f90b865
AD		 779 int i;
780 u8 pgid;
781 u8 up_map;
782 u8 prio;
783 u8 tc_pct;
784
3d1f4869
TG		 785 if (!tb[DCB_ATTR_PG_CFG])
786 return -EINVAL;
787
788 if (!netdev->dcbnl_ops->setpgtccfgtx ||
2f90b865
AD		 789 !netdev->dcbnl_ops->setpgtccfgrx ||
790 !netdev->dcbnl_ops->setpgbwgcfgtx ||
791 !netdev->dcbnl_ops->setpgbwgcfgrx)
3d1f4869 792 return -EOPNOTSUPP;
2f90b865
AD		 793
794 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
795 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
796 if (ret)
3d1f4869 797 return ret;
2f90b865
AD		 798
799 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
800 if (!pg_tb[i])
801 continue;
802
803 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
804 pg_tb[i], dcbnl_tc_param_nest);
805 if (ret)
3d1f4869 806 return ret;
2f90b865
AD		 807
808 pgid = DCB_ATTR_VALUE_UNDEFINED;
809 prio = DCB_ATTR_VALUE_UNDEFINED;
810 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
811 up_map = DCB_ATTR_VALUE_UNDEFINED;
812
813 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
814 prio =
815 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
816
817 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
818 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
819
820 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
821 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
822
823 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
824 up_map =
825 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
826
827 /* dir: Tx = 0, Rx = 1 */
828 if (dir) {
829 /* Rx */
830 netdev->dcbnl_ops->setpgtccfgrx(netdev,
831 i - DCB_PG_ATTR_TC_0,
832 prio, pgid, tc_pct, up_map);
833 } else {
834 /* Tx */
835 netdev->dcbnl_ops->setpgtccfgtx(netdev,
836 i - DCB_PG_ATTR_TC_0,
837 prio, pgid, tc_pct, up_map);
838 }
839 }
840
841 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
842 if (!pg_tb[i])
843 continue;
844
845 tc_pct = nla_get_u8(pg_tb[i]);
846
847 /* dir: Tx = 0, Rx = 1 */
848 if (dir) {
849 /* Rx */
850 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
851 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
852 } else {
853 /* Tx */
854 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
855 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
856 }
857 }
858
bb1dfefd 859 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
2f90b865
AD		 860}
861
7be99413
TG		 862static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
863 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 864{
7be99413 865 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
2f90b865
AD		 866}
867
7be99413
TG		 868static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
869 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 870{
7be99413 871 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
2f90b865
AD		 872}
873
7be99413
TG		 874static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
875 u32 seq, struct nlattr **tb, struct sk_buff *skb)
859ee3c4 876{
859ee3c4
AD		 877 struct nlattr *bcn_nest;
878 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
879 u8 value_byte;
880 u32 value_integer;
3d1f4869 881 int ret;
859ee3c4
AD		 882 bool getall = false;
883 int i;
884
3d1f4869
TG		 885 if (!tb[DCB_ATTR_BCN])
886 return -EINVAL;
887
888 if (!netdev->dcbnl_ops->getbcnrp ||
859ee3c4 889 !netdev->dcbnl_ops->getbcncfg)
3d1f4869 890 return -EOPNOTSUPP;
859ee3c4
AD		 891
892 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
893 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
859ee3c4 894 if (ret)
3d1f4869 895 return ret;
859ee3c4 896
7be99413 897 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
859ee3c4 898 if (!bcn_nest)
3d1f4869 899 return -EMSGSIZE;
859ee3c4
AD		 900
901 if (bcn_tb[DCB_BCN_ATTR_ALL])
902 getall = true;
903
904 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
905 if (!getall && !bcn_tb[i])
906 continue;
907
908 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
909 &value_byte);
7be99413 910 ret = nla_put_u8(skb, i, value_byte);
859ee3c4
AD		 911 if (ret)
912 goto err_bcn;
913 }
914
f4314e81 915 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 916 if (!getall && !bcn_tb[i])
917 continue;
918
919 netdev->dcbnl_ops->getbcncfg(netdev, i,
920 &value_integer);
7be99413 921 ret = nla_put_u32(skb, i, value_integer);
859ee3c4
AD		 922 if (ret)
923 goto err_bcn;
924 }
925
7be99413 926 nla_nest_end(skb, bcn_nest);
859ee3c4
AD		 927
928 return 0;
929
930err_bcn:
7be99413 931 nla_nest_cancel(skb, bcn_nest);
859ee3c4
AD		 932 return ret;
933}
934
7be99413
TG		 935static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
936 u32 seq, struct nlattr **tb, struct sk_buff *skb)
859ee3c4
AD		 937{
938 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
939 int i;
3d1f4869 940 int ret;
859ee3c4
AD		 941 u8 value_byte;
942 u32 value_int;
943
3d1f4869
TG		 944 if (!tb[DCB_ATTR_BCN])
945 return -EINVAL;
946
947 if (!netdev->dcbnl_ops->setbcncfg ||
f64f9e71 948 !netdev->dcbnl_ops->setbcnrp)
3d1f4869 949 return -EOPNOTSUPP;
859ee3c4
AD		 950
951 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
952 tb[DCB_ATTR_BCN],
953 dcbnl_pfc_up_nest);
954 if (ret)
3d1f4869 955 return ret;
859ee3c4
AD		 956
957 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
958 if (data[i] == NULL)
959 continue;
960 value_byte = nla_get_u8(data[i]);
961 netdev->dcbnl_ops->setbcnrp(netdev,
962 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
963 }
964
f4314e81 965 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 966 if (data[i] == NULL)
967 continue;
968 value_int = nla_get_u32(data[i]);
969 netdev->dcbnl_ops->setbcncfg(netdev,
970 i, value_int);
971 }
972
3d1f4869 973 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
859ee3c4
AD		 974}
975
dc6ed1df
SR		 976static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
977 int app_nested_type, int app_info_type,
978 int app_entry_type)
eed84713
SR		 979{
980 struct dcb_peer_app_info info;
981 struct dcb_app *table = NULL;
982 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
983 u16 app_count;
984 int err;
985
986
987 /**
988 * retrieve the peer app configuration form the driver. If the driver
989 * handlers fail exit without doing anything
990 */
991 err = ops->peer_getappinfo(netdev, &info, &app_count);
992 if (!err && app_count) {
993 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
994 if (!table)
995 return -ENOMEM;
996
997 err = ops->peer_getapptable(netdev, table);
998 }
999
1000 if (!err) {
1001 u16 i;
1002 struct nlattr *app;
1003
1004 /**
1005 * build the message, from here on the only possible failure
1006 * is due to the skb size
1007 */
1008 err = -EMSGSIZE;
1009
dc6ed1df 1010 app = nla_nest_start(skb, app_nested_type);
eed84713
SR		 1011 if (!app)
1012 goto nla_put_failure;
1013
1eb4c977
DM		 1014 if (app_info_type &&
1015 nla_put(skb, app_info_type, sizeof(info), &info))
1016 goto nla_put_failure;
eed84713 1017
1eb4c977
DM		 1018 for (i = 0; i < app_count; i++) {
1019 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1020 &table[i]))
1021 goto nla_put_failure;
1022 }
eed84713
SR		 1023 nla_nest_end(skb, app);
1024 }
1025 err = 0;
1026
1027nla_put_failure:
1028 kfree(table);
1029 return err;
1030}
3e29027a 1031
c9368247 1032/* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */
314b4778 1033static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
3e29027a 1034{
9ab933ab
JF		 1035 struct nlattr *ieee, *app;
1036 struct dcb_app_type *itr;
3e29027a 1037 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
c7797baf 1038 int dcbx;
3d1f4869 1039 int err;
3e29027a 1040
1eb4c977 1041 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
3d1f4869
TG		 1042 return -EMSGSIZE;
1043
3e29027a
JF		 1044 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1045 if (!ieee)
3d1f4869 1046 return -EMSGSIZE;
3e29027a
JF		 1047
1048 if (ops->ieee_getets) {
1049 struct ieee_ets ets;
29cd8ae0 1050 memset(&ets, 0, sizeof(ets));
3e29027a 1051 err = ops->ieee_getets(netdev, &ets);
1eb4c977
DM		 1052 if (!err &&
1053 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
3d1f4869 1054 return -EMSGSIZE;
3e29027a
JF		 1055 }
1056
08f10aff
AV		 1057 if (ops->ieee_getmaxrate) {
1058 struct ieee_maxrate maxrate;
29cd8ae0 1059 memset(&maxrate, 0, sizeof(maxrate));
08f10aff
AV		 1060 err = ops->ieee_getmaxrate(netdev, &maxrate);
1061 if (!err) {
1062 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1063 sizeof(maxrate), &maxrate);
1064 if (err)
3d1f4869 1065 return -EMSGSIZE;
08f10aff
AV		 1066 }
1067 }
1068
c9368247
SM		 1069 if (ops->ieee_getqcn) {
1070 struct ieee_qcn qcn;
1071
1072 memset(&qcn, 0, sizeof(qcn));
1073 err = ops->ieee_getqcn(netdev, &qcn);
1074 if (!err) {
1075 err = nla_put(skb, DCB_ATTR_IEEE_QCN,
1076 sizeof(qcn), &qcn);
1077 if (err)
1078 return -EMSGSIZE;
1079 }
1080 }
1081
1082 if (ops->ieee_getqcnstats) {
1083 struct ieee_qcn_stats qcn_stats;
1084
1085 memset(&qcn_stats, 0, sizeof(qcn_stats));
1086 err = ops->ieee_getqcnstats(netdev, &qcn_stats);
1087 if (!err) {
1088 err = nla_put(skb, DCB_ATTR_IEEE_QCN_STATS,
1089 sizeof(qcn_stats), &qcn_stats);
1090 if (err)
1091 return -EMSGSIZE;
1092 }
1093 }
1094
3e29027a
JF		 1095 if (ops->ieee_getpfc) {
1096 struct ieee_pfc pfc;
29cd8ae0 1097 memset(&pfc, 0, sizeof(pfc));
3e29027a 1098 err = ops->ieee_getpfc(netdev, &pfc);
1eb4c977
DM		 1099 if (!err &&
1100 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
3d1f4869 1101 return -EMSGSIZE;
3e29027a
JF		 1102 }
1103
9ab933ab
JF		 1104 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1105 if (!app)
3d1f4869 1106 return -EMSGSIZE;
9ab933ab 1107
52cff74e 1108 spin_lock_bh(&dcb_lock);
9ab933ab 1109 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1110 if (itr->ifindex == netdev->ifindex) {
70bfa2d2
DC		 1111 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1112 &itr->app);
1113 if (err) {
52cff74e 1114 spin_unlock_bh(&dcb_lock);
3d1f4869 1115 return -EMSGSIZE;
70bfa2d2
DC		 1116 }
1117 }
9ab933ab 1118 }
c7797baf
JF		 1119
1120 if (netdev->dcbnl_ops->getdcbx)
1121 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1122 else
1123 dcbx = -EOPNOTSUPP;
1124
52cff74e 1125 spin_unlock_bh(&dcb_lock);
9ab933ab
JF		 1126 nla_nest_end(skb, app);
1127
eed84713
SR		 1128 /* get peer info if available */
1129 if (ops->ieee_peer_getets) {
1130 struct ieee_ets ets;
29cd8ae0 1131 memset(&ets, 0, sizeof(ets));
eed84713 1132 err = ops->ieee_peer_getets(netdev, &ets);
1eb4c977
DM		 1133 if (!err &&
1134 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
3d1f4869 1135 return -EMSGSIZE;
eed84713
SR		 1136 }
1137
1138 if (ops->ieee_peer_getpfc) {
1139 struct ieee_pfc pfc;
29cd8ae0 1140 memset(&pfc, 0, sizeof(pfc));
eed84713 1141 err = ops->ieee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1142 if (!err &&
1143 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
3d1f4869 1144 return -EMSGSIZE;
eed84713
SR		 1145 }
1146
1147 if (ops->peer_getappinfo && ops->peer_getapptable) {
dc6ed1df
SR		 1148 err = dcbnl_build_peer_app(netdev, skb,
1149 DCB_ATTR_IEEE_PEER_APP,
1150 DCB_ATTR_IEEE_APP_UNSPEC,
1151 DCB_ATTR_IEEE_APP);
eed84713 1152 if (err)
3d1f4869 1153 return -EMSGSIZE;
eed84713
SR		 1154 }
1155
3e29027a 1156 nla_nest_end(skb, ieee);
c7797baf
JF		 1157 if (dcbx >= 0) {
1158 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1159 if (err)
3d1f4869 1160 return -EMSGSIZE;
c7797baf 1161 }
3e29027a 1162
314b4778 1163 return 0;
3e29027a
JF		 1164}
1165
5b7f7626
SR		 1166static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1167 int dir)
1168{
1169 u8 pgid, up_map, prio, tc_pct;
1170 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1171 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1172 struct nlattr *pg = nla_nest_start(skb, i);
1173
1174 if (!pg)
3d1f4869 1175 return -EMSGSIZE;
5b7f7626
SR		 1176
1177 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1178 struct nlattr *tc_nest = nla_nest_start(skb, i);
1179
1180 if (!tc_nest)
3d1f4869 1181 return -EMSGSIZE;
5b7f7626
SR		 1182
1183 pgid = DCB_ATTR_VALUE_UNDEFINED;
1184 prio = DCB_ATTR_VALUE_UNDEFINED;
1185 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1186 up_map = DCB_ATTR_VALUE_UNDEFINED;
1187
1188 if (!dir)
1189 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1190 &prio, &pgid, &tc_pct, &up_map);
1191 else
1192 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1193 &prio, &pgid, &tc_pct, &up_map);
1194
1eb4c977
DM		 1195 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1196 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1197 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1198 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
3d1f4869 1199 return -EMSGSIZE;
5b7f7626
SR		 1200 nla_nest_end(skb, tc_nest);
1201 }
1202
1203 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1204 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1205
1206 if (!dir)
1207 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1208 &tc_pct);
1209 else
1210 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1211 &tc_pct);
1eb4c977 1212 if (nla_put_u8(skb, i, tc_pct))
3d1f4869 1213 return -EMSGSIZE;
5b7f7626
SR		 1214 }
1215 nla_nest_end(skb, pg);
1216 return 0;
5b7f7626
SR		 1217}
1218
1219static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1220{
1221 struct nlattr *cee, *app;
1222 struct dcb_app_type *itr;
1223 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1224 int dcbx, i, err = -EMSGSIZE;
1225 u8 value;
1226
1eb4c977
DM		 1227 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1228 goto nla_put_failure;
5b7f7626
SR		 1229 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1230 if (!cee)
1231 goto nla_put_failure;
1232
1233 /* local pg */
1234 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1235 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1236 if (err)
1237 goto nla_put_failure;
1238 }
1239
1240 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1241 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1242 if (err)
1243 goto nla_put_failure;
1244 }
1245
1246 /* local pfc */
1247 if (ops->getpfccfg) {
1248 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1249
1250 if (!pfc_nest)
1251 goto nla_put_failure;
1252
1253 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1254 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
1eb4c977
DM		 1255 if (nla_put_u8(skb, i, value))
1256 goto nla_put_failure;
5b7f7626
SR		 1257 }
1258 nla_nest_end(skb, pfc_nest);
1259 }
1260
1261 /* local app */
52cff74e 1262 spin_lock_bh(&dcb_lock);
5b7f7626
SR		 1263 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1264 if (!app)
40f5d72a 1265 goto dcb_unlock;
5b7f7626
SR		 1266
1267 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1268 if (itr->ifindex == netdev->ifindex) {
5b7f7626
SR		 1269 struct nlattr *app_nest = nla_nest_start(skb,
1270 DCB_ATTR_APP);
1271 if (!app_nest)
1272 goto dcb_unlock;
1273
1274 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1275 itr->app.selector);
1276 if (err)
1277 goto dcb_unlock;
1278
1279 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1280 itr->app.protocol);
1281 if (err)
1282 goto dcb_unlock;
1283
1284 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1285 itr->app.priority);
1286 if (err)
1287 goto dcb_unlock;
1288
1289 nla_nest_end(skb, app_nest);
1290 }
1291 }
1292 nla_nest_end(skb, app);
1293
1294 if (netdev->dcbnl_ops->getdcbx)
1295 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1296 else
1297 dcbx = -EOPNOTSUPP;
1298
52cff74e 1299 spin_unlock_bh(&dcb_lock);
5b7f7626
SR		 1300
1301 /* features flags */
1302 if (ops->getfeatcfg) {
1303 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1304 if (!feat)
1305 goto nla_put_failure;
1306
1307 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1308 i++)
1eb4c977
DM		 1309 if (!ops->getfeatcfg(netdev, i, &value) &&
1310 nla_put_u8(skb, i, value))
1311 goto nla_put_failure;
5b7f7626
SR		 1312
1313 nla_nest_end(skb, feat);
1314 }
1315
1316 /* peer info if available */
1317 if (ops->cee_peer_getpg) {
1318 struct cee_pg pg;
29cd8ae0 1319 memset(&pg, 0, sizeof(pg));
5b7f7626 1320 err = ops->cee_peer_getpg(netdev, &pg);
1eb4c977
DM		 1321 if (!err &&
1322 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1323 goto nla_put_failure;
5b7f7626
SR		 1324 }
1325
1326 if (ops->cee_peer_getpfc) {
1327 struct cee_pfc pfc;
29cd8ae0 1328 memset(&pfc, 0, sizeof(pfc));
5b7f7626 1329 err = ops->cee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1330 if (!err &&
1331 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1332 goto nla_put_failure;
5b7f7626
SR		 1333 }
1334
1335 if (ops->peer_getappinfo && ops->peer_getapptable) {
1336 err = dcbnl_build_peer_app(netdev, skb,
1337 DCB_ATTR_CEE_PEER_APP_TABLE,
1338 DCB_ATTR_CEE_PEER_APP_INFO,
1339 DCB_ATTR_CEE_PEER_APP);
1340 if (err)
1341 goto nla_put_failure;
1342 }
1343 nla_nest_end(skb, cee);
1344
1345 /* DCBX state */
1346 if (dcbx >= 0) {
1347 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1348 if (err)
1349 goto nla_put_failure;
1350 }
1351 return 0;
1352
1353dcb_unlock:
52cff74e 1354 spin_unlock_bh(&dcb_lock);
5b7f7626 1355nla_put_failure:
c66ebf2d 1356 err = -EMSGSIZE;
5b7f7626
SR		 1357 return err;
1358}
1359
1360static int dcbnl_notify(struct net_device *dev, int event, int cmd,
15e47304 1361 u32 seq, u32 portid, int dcbx_ver)
314b4778
JF		 1362{
1363 struct net *net = dev_net(dev);
1364 struct sk_buff *skb;
1365 struct nlmsghdr *nlh;
314b4778
JF		 1366 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1367 int err;
1368
1369 if (!ops)
1370 return -EOPNOTSUPP;
1371
15e47304 1372 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
314b4778
JF		 1373 if (!skb)
1374 return -ENOBUFS;
1375
5b7f7626
SR		 1376 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1377 err = dcbnl_ieee_fill(skb, dev);
1378 else
1379 err = dcbnl_cee_fill(skb, dev);
1380
314b4778
JF		 1381 if (err < 0) {
1382 /* Report error to broadcast listeners */
ab6d4707 1383 nlmsg_free(skb);
314b4778
JF		 1384 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1385 } else {
1386 /* End nlmsg and notify broadcast listeners */
1387 nlmsg_end(skb, nlh);
1388 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1389 }
1390
1391 return err;
1392}
5b7f7626
SR		 1393
1394int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
15e47304 1395 u32 seq, u32 portid)
5b7f7626 1396{
15e47304 1397 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
5b7f7626
SR		 1398}
1399EXPORT_SYMBOL(dcbnl_ieee_notify);
1400
1401int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
15e47304 1402 u32 seq, u32 portid)
5b7f7626 1403{
15e47304 1404 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
5b7f7626
SR		 1405}
1406EXPORT_SYMBOL(dcbnl_cee_notify);
314b4778 1407
c9368247
SM		 1408/* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb SET commands.
1409 * If any requested operation can not be completed
1410 * the entire msg is aborted and error value is returned.
314b4778
JF		 1411 * No attempt is made to reconcile the case where only part of the
1412 * cmd can be completed.
1413 */
7be99413
TG		 1414static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1415 u32 seq, struct nlattr **tb, struct sk_buff *skb)
314b4778
JF		 1416{
1417 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1418 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
3d1f4869 1419 int err;
314b4778
JF		 1420
1421 if (!ops)
3d1f4869 1422 return -EOPNOTSUPP;
314b4778 1423
4003b658
JF		 1424 if (!tb[DCB_ATTR_IEEE])
1425 return -EINVAL;
1426
314b4778
JF		 1427 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1428 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1429 if (err)
1430 return err;
1431
1432 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1433 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1434 err = ops->ieee_setets(netdev, ets);
1435 if (err)
1436 goto err;
1437 }
1438
08f10aff
AV		 1439 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1440 struct ieee_maxrate *maxrate =
1441 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1442 err = ops->ieee_setmaxrate(netdev, maxrate);
1443 if (err)
1444 goto err;
1445 }
1446
c9368247
SM		 1447 if (ieee[DCB_ATTR_IEEE_QCN] && ops->ieee_setqcn) {
1448 struct ieee_qcn *qcn =
1449 nla_data(ieee[DCB_ATTR_IEEE_QCN]);
1450
1451 err = ops->ieee_setqcn(netdev, qcn);
1452 if (err)
1453 goto err;
1454 }
1455
314b4778
JF		 1456 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1457 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1458 err = ops->ieee_setpfc(netdev, pfc);
1459 if (err)
1460 goto err;
1461 }
1462
1463 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1464 struct nlattr *attr;
1465 int rem;
1466
1467 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1468 struct dcb_app *app_data;
1469 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1470 continue;
1471 app_data = nla_data(attr);
1472 if (ops->ieee_setapp)
1473 err = ops->ieee_setapp(netdev, app_data);
1474 else
b6db2174 1475 err = dcb_ieee_setapp(netdev, app_data);
314b4778
JF		 1476 if (err)
1477 goto err;
1478 }
1479 }
1480
1481err:
7be99413 1482 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
5b7f7626 1483 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
314b4778
JF		 1484 return err;
1485}
1486
7be99413
TG		 1487static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1488 u32 seq, struct nlattr **tb, struct sk_buff *skb)
314b4778 1489{
314b4778 1490 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
314b4778
JF		 1491
1492 if (!ops)
1493 return -EOPNOTSUPP;
1494
7be99413 1495 return dcbnl_ieee_fill(skb, netdev);
314b4778 1496}
f9ae7e4b 1497
7be99413
TG		 1498static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1499 u32 seq, struct nlattr **tb, struct sk_buff *skb)
f9ae7e4b
JF		 1500{
1501 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1502 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
3d1f4869 1503 int err;
f9ae7e4b
JF		 1504
1505 if (!ops)
1506 return -EOPNOTSUPP;
1507
1508 if (!tb[DCB_ATTR_IEEE])
1509 return -EINVAL;
1510
1511 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1512 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1513 if (err)
1514 return err;
1515
1516 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1517 struct nlattr *attr;
1518 int rem;
1519
1520 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1521 struct dcb_app *app_data;
1522
1523 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1524 continue;
1525 app_data = nla_data(attr);
1526 if (ops->ieee_delapp)
1527 err = ops->ieee_delapp(netdev, app_data);
1528 else
1529 err = dcb_ieee_delapp(netdev, app_data);
1530 if (err)
1531 goto err;
1532 }
1533 }
1534
1535err:
7be99413 1536 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
5b7f7626 1537 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
f9ae7e4b
JF		 1538 return err;
1539}
1540
1541
6241b625 1542/* DCBX configuration */
7be99413
TG		 1543static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1544 u32 seq, struct nlattr **tb, struct sk_buff *skb)
6241b625 1545{
6241b625 1546 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1547 return -EOPNOTSUPP;
6241b625 1548
7be99413
TG		 1549 return nla_put_u8(skb, DCB_ATTR_DCBX,
1550 netdev->dcbnl_ops->getdcbx(netdev));
6241b625
SR		 1551}
1552
7be99413
TG		 1553static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1554 u32 seq, struct nlattr **tb, struct sk_buff *skb)
6241b625 1555{
6241b625
SR		 1556 u8 value;
1557
7f891cf1
SR		 1558 if (!netdev->dcbnl_ops->setdcbx)
1559 return -EOPNOTSUPP;
1560
1561 if (!tb[DCB_ATTR_DCBX])
1562 return -EINVAL;
6241b625
SR		 1563
1564 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1565
7be99413
TG		 1566 return nla_put_u8(skb, DCB_ATTR_DCBX,
1567 netdev->dcbnl_ops->setdcbx(netdev, value));
6241b625
SR		 1568}
1569
7be99413
TG		 1570static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1571 u32 seq, struct nlattr **tb, struct sk_buff *skb)
ea45fe4e 1572{
ea45fe4e
SR		 1573 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1574 u8 value;
7f891cf1 1575 int ret, i;
ea45fe4e
SR		 1576 int getall = 0;
1577
7f891cf1
SR		 1578 if (!netdev->dcbnl_ops->getfeatcfg)
1579 return -EOPNOTSUPP;
1580
1581 if (!tb[DCB_ATTR_FEATCFG])
1582 return -EINVAL;
ea45fe4e
SR		 1583
1584 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1585 dcbnl_featcfg_nest);
7f891cf1 1586 if (ret)
7be99413 1587 return ret;
ea45fe4e 1588
7be99413
TG		 1589 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1590 if (!nest)
1591 return -EMSGSIZE;
ea45fe4e
SR		 1592
1593 if (data[DCB_FEATCFG_ATTR_ALL])
1594 getall = 1;
1595
1596 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1597 if (!getall && !data[i])
1598 continue;
1599
1600 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1601 if (!ret)
7be99413 1602 ret = nla_put_u8(skb, i, value);
ea45fe4e 1603
7f891cf1 1604 if (ret) {
7be99413 1605 nla_nest_cancel(skb, nest);
7f891cf1
SR		 1606 goto nla_put_failure;
1607 }
ea45fe4e 1608 }
7be99413 1609 nla_nest_end(skb, nest);
ea45fe4e 1610
7f891cf1 1611nla_put_failure:
ea45fe4e
SR		 1612 return ret;
1613}
1614
7be99413
TG		 1615static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1616 u32 seq, struct nlattr **tb, struct sk_buff *skb)
ea45fe4e
SR		 1617{
1618 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1619 int ret, i;
ea45fe4e 1620 u8 value;
ea45fe4e 1621
7f891cf1
SR		 1622 if (!netdev->dcbnl_ops->setfeatcfg)
1623 return -ENOTSUPP;
1624
1625 if (!tb[DCB_ATTR_FEATCFG])
1626 return -EINVAL;
ea45fe4e
SR		 1627
1628 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1629 dcbnl_featcfg_nest);
1630
7f891cf1 1631 if (ret)
ea45fe4e 1632 goto err;
ea45fe4e
SR		 1633
1634 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1635 if (data[i] == NULL)
1636 continue;
1637
1638 value = nla_get_u8(data[i]);
1639
1640 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1641
1642 if (ret)
7f891cf1 1643 goto err;
ea45fe4e 1644 }
ea45fe4e 1645err:
7be99413 1646 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
7f891cf1 1647
ea45fe4e
SR		 1648 return ret;
1649}
1650
dc6ed1df 1651/* Handle CEE DCBX GET commands. */
7be99413
TG		 1652static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1653 u32 seq, struct nlattr **tb, struct sk_buff *skb)
dc6ed1df 1654{
dc6ed1df 1655 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
dc6ed1df
SR		 1656
1657 if (!ops)
1658 return -EOPNOTSUPP;
1659
7be99413 1660 return dcbnl_cee_fill(skb, netdev);
dc6ed1df
SR		 1661}
1662
33a03aad
TG		 1663struct reply_func {
1664 /* reply netlink message type */
1665 int type;
1666
1667 /* function to fill message contents */
1668 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1669 struct nlattr **, struct sk_buff *);
1670};
1671
1672static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
7be99413
TG		 1673 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1674 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1675 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1676 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1677 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1678 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1679 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1680 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1681 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1682 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1683 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1684 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1685 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1686 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1687 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1688 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1689 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1690 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1691 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1692 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1693 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1694 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1695 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1696 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1697 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1698 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1699 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
33a03aad
TG		 1700};
1701
661d2967 1702static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
2f90b865
AD		 1703{
1704 struct net *net = sock_net(skb->sk);
1705 struct net_device *netdev;
7a282bc3 1706 struct dcbmsg *dcb = nlmsg_data(nlh);
2f90b865 1707 struct nlattr *tb[DCB_ATTR_MAX + 1];
15e47304 1708 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
2f90b865 1709 int ret = -EINVAL;
33a03aad 1710 struct sk_buff *reply_skb;
39912f9c 1711 struct nlmsghdr *reply_nlh = NULL;
33a03aad 1712 const struct reply_func *fn;
2f90b865 1713
90f62cf3 1714 if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN))
dfc47ef8
EB		 1715 return -EPERM;
1716
2f90b865
AD		 1717 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1718 dcbnl_rtnl_policy);
1719 if (ret < 0)
1720 return ret;
1721
33a03aad
TG		 1722 if (dcb->cmd > DCB_CMD_MAX)
1723 return -EINVAL;
1724
1725 /* check if a reply function has been defined for the command */
1726 fn = &reply_funcs[dcb->cmd];
1727 if (!fn->cb)
1728 return -EOPNOTSUPP;
1729
2f90b865
AD		 1730 if (!tb[DCB_ATTR_IFNAME])
1731 return -EINVAL;
1732
d9ac62be 1733 netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
2f90b865 1734 if (!netdev)
3d1f4869 1735 return -ENODEV;
2f90b865 1736
d9ac62be
YX		 1737 if (!netdev->dcbnl_ops)
1738 return -EOPNOTSUPP;
2f90b865 1739
15e47304 1740 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
33a03aad 1741 nlh->nlmsg_flags, &reply_nlh);
d9ac62be
YX		 1742 if (!reply_skb)
1743 return -ENOBUFS;
33a03aad
TG		 1744
1745 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1746 if (ret < 0) {
1747 nlmsg_free(reply_skb);
1748 goto out;
1749 }
1750
1751 nlmsg_end(reply_skb, reply_nlh);
1752
7c77ab24 1753 ret = rtnl_unicast(reply_skb, net, portid);
2f90b865 1754out:
2f90b865
AD		 1755 return ret;
1756}
1757
716b31ab
TG		 1758static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1759 int ifindex, int prio)
1760{
1761 struct dcb_app_type *itr;
1762
1763 list_for_each_entry(itr, &dcb_app_list, list) {
1764 if (itr->app.selector == app->selector &&
1765 itr->app.protocol == app->protocol &&
1766 itr->ifindex == ifindex &&
1767 (!prio || itr->app.priority == prio))
1768 return itr;
1769 }
1770
1771 return NULL;
1772}
1773
4e4f2f69
TG		 1774static int dcb_app_add(const struct dcb_app *app, int ifindex)
1775{
1776 struct dcb_app_type *entry;
1777
1778 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1779 if (!entry)
1780 return -ENOMEM;
1781
1782 memcpy(&entry->app, app, sizeof(*app));
1783 entry->ifindex = ifindex;
1784 list_add(&entry->list, &dcb_app_list);
1785
1786 return 0;
1787}
1788
9ab933ab
JF		 1789/**
1790 * dcb_getapp - retrieve the DCBX application user priority
1791 *
1792 * On success returns a non-zero 802.1p user priority bitmap
1793 * otherwise returns 0 as the invalid user priority bitmap to
1794 * indicate an error.
1795 */
1796u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1797{
1798 struct dcb_app_type *itr;
1799 u8 prio = 0;
1800
52cff74e 1801 spin_lock_bh(&dcb_lock);
716b31ab
TG		 1802 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1803 prio = itr->app.priority;
52cff74e 1804 spin_unlock_bh(&dcb_lock);
9ab933ab
JF		 1805
1806 return prio;
1807}
1808EXPORT_SYMBOL(dcb_getapp);
1809
1810/**
b6db2174 1811 * dcb_setapp - add CEE dcb application data to app list
9ab933ab 1812 *
b6db2174
JF		 1813 * Priority 0 is an invalid priority in CEE spec. This routine
1814 * removes applications from the app list if the priority is
16eecd9b 1815 * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap
9ab933ab 1816 */
ab6baf98 1817int dcb_setapp(struct net_device *dev, struct dcb_app *new)
9ab933ab
JF		 1818{
1819 struct dcb_app_type *itr;
7ec79270 1820 struct dcb_app_type event;
4e4f2f69 1821 int err = 0;
7ec79270 1822
e290ed81 1823 event.ifindex = dev->ifindex;
7ec79270 1824 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 1825 if (dev->dcbnl_ops->getdcbx)
1826 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
9ab933ab 1827
52cff74e 1828 spin_lock_bh(&dcb_lock);
9ab933ab 1829 /* Search for existing match and replace */
716b31ab
TG		 1830 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1831 if (new->priority)
1832 itr->app.priority = new->priority;
1833 else {
1834 list_del(&itr->list);
1835 kfree(itr);
9ab933ab 1836 }
716b31ab 1837 goto out;
9ab933ab
JF		 1838 }
1839 /* App type does not exist add new application type */
4e4f2f69
TG		 1840 if (new->priority)
1841 err = dcb_app_add(new, dev->ifindex);
9ab933ab 1842out:
52cff74e 1843 spin_unlock_bh(&dcb_lock);
4e4f2f69
TG		 1844 if (!err)
1845 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1846 return err;
9ab933ab
JF		 1847}
1848EXPORT_SYMBOL(dcb_setapp);
1849
a364c8cf
JF		 1850/**
1851 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1852 *
1853 * Helper routine which on success returns a non-zero 802.1Qaz user
1854 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1855 * not found in APP list.
1856 */
1857u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1858{
1859 struct dcb_app_type *itr;
1860 u8 prio = 0;
1861
52cff74e 1862 spin_lock_bh(&dcb_lock);
716b31ab
TG		 1863 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1864 prio |= 1 << itr->app.priority;
52cff74e 1865 spin_unlock_bh(&dcb_lock);
a364c8cf
JF		 1866
1867 return prio;
1868}
1869EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1870
b6db2174
JF		 1871/**
1872 * dcb_ieee_setapp - add IEEE dcb application data to app list
1873 *
1874 * This adds Application data to the list. Multiple application
1875 * entries may exists for the same selector and protocol as long
16eecd9b
AB		 1876 * as the priorities are different. Priority is expected to be a
1877 * 3-bit unsigned integer
b6db2174
JF		 1878 */
1879int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1880{
b6db2174
JF		 1881 struct dcb_app_type event;
1882 int err = 0;
1883
e290ed81 1884 event.ifindex = dev->ifindex;
b6db2174 1885 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 1886 if (dev->dcbnl_ops->getdcbx)
1887 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
b6db2174 1888
52cff74e 1889 spin_lock_bh(&dcb_lock);
b6db2174 1890 /* Search for existing match and abort if found */
716b31ab
TG		 1891 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1892 err = -EEXIST;
1893 goto out;
b6db2174
JF		 1894 }
1895
4e4f2f69 1896 err = dcb_app_add(new, dev->ifindex);
b6db2174 1897out:
52cff74e 1898 spin_unlock_bh(&dcb_lock);
b6db2174
JF		 1899 if (!err)
1900 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1901 return err;
1902}
1903EXPORT_SYMBOL(dcb_ieee_setapp);
1904
f9ae7e4b
JF		 1905/**
1906 * dcb_ieee_delapp - delete IEEE dcb application data from list
1907 *
1908 * This removes a matching APP data from the APP list
1909 */
1910int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1911{
1912 struct dcb_app_type *itr;
1913 struct dcb_app_type event;
1914 int err = -ENOENT;
1915
e290ed81 1916 event.ifindex = dev->ifindex;
f9ae7e4b 1917 memcpy(&event.app, del, sizeof(event.app));
6bd0e1cb
JF		 1918 if (dev->dcbnl_ops->getdcbx)
1919 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
f9ae7e4b 1920
52cff74e 1921 spin_lock_bh(&dcb_lock);
f9ae7e4b 1922 /* Search for existing match and remove it. */
716b31ab
TG		 1923 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1924 list_del(&itr->list);
1925 kfree(itr);
1926 err = 0;
f9ae7e4b
JF		 1927 }
1928
52cff74e 1929 spin_unlock_bh(&dcb_lock);
f9ae7e4b
JF		 1930 if (!err)
1931 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1932 return err;
1933}
1934EXPORT_SYMBOL(dcb_ieee_delapp);
1935
2f90b865
AD		 1936static int __init dcbnl_init(void)
1937{
9ab933ab
JF		 1938 INIT_LIST_HEAD(&dcb_app_list);
1939
c7ac8679
GR		 1940 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1941 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
2f90b865
AD		 1942
1943 return 0;
1944}
36b9ad80 1945device_initcall(dcbnl_init);
Empty description
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