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rtnetlink: Remove passing of attributes into rtnl_doit functions
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / dcb / dcbnl.c
CommitLineData
2f90b865 1/*
698e1d23 2 * Copyright (c) 2008-2011, Intel Corporation.
2f90b865
AD		 3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
15 * Place - Suite 330, Boston, MA 02111-1307 USA.
16 *
17 * Author: Lucy Liu <lucy.liu@intel.com>
18 */
19
20#include <linux/netdevice.h>
21#include <linux/netlink.h>
5a0e3ad6 22#include <linux/slab.h>
2f90b865
AD		 23#include <net/netlink.h>
24#include <net/rtnetlink.h>
25#include <linux/dcbnl.h>
96b99684 26#include <net/dcbevent.h>
2f90b865 27#include <linux/rtnetlink.h>
3a9a231d 28#include <linux/module.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
52MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
7a6b6f51 53MODULE_DESCRIPTION("Data Center Bridging netlink interface");
2f90b865
AD		 54MODULE_LICENSE("GPL");
55
56/**************** DCB attribute policies *************************************/
57
58/* DCB netlink attributes policy */
b54452b0 59static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
859ee3c4
AD		 60 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
61 [DCB_ATTR_STATE] = {.type = NLA_U8},
62 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
63 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
64 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
2f90b865 65 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
859ee3c4
AD		 66 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
67 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
6fa382af 69 [DCB_ATTR_APP] = {.type = NLA_NESTED},
3e29027a 70 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
6241b625 71 [DCB_ATTR_DCBX] = {.type = NLA_U8},
ea45fe4e 72 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
2f90b865
AD		 73};
74
75/* DCB priority flow control to User Priority nested attributes */
b54452b0 76static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
2f90b865
AD		 77 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
82 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
83 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
84 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
85 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
86};
87
88/* DCB priority grouping nested attributes */
b54452b0 89static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
2f90b865
AD		 90 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
96 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
97 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
98 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
99 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
104 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
105 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
106 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
107 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
108};
109
110/* DCB traffic class nested attributes. */
b54452b0 111static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
2f90b865
AD		 112 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
113 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
114 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
115 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
116 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
117};
118
46132188 119/* DCB capabilities nested attributes. */
b54452b0 120static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
46132188
AD		 121 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
122 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
125 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
126 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
127 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
128 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
6241b625 129 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
46132188 130};
2f90b865 131
33dbabc4 132/* DCB capabilities nested attributes. */
b54452b0 133static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
33dbabc4
AD		 134 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
135 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
136 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
137};
138
859ee3c4 139/* DCB BCN nested attributes. */
b54452b0 140static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
859ee3c4
AD		 141 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
146 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
147 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
148 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
149 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
f4314e81
DS		 150 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
859ee3c4
AD		 152 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
162 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
163 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
164 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
165 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
166};
167
6fa382af 168/* DCB APP nested attributes. */
b54452b0 169static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
6fa382af
YZ		 170 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
171 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
172 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
173};
174
3e29027a
JF		 175/* IEEE 802.1Qaz nested attributes. */
176static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
177 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
178 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
179 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
08f10aff 180 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
3e29027a
JF		 181};
182
183static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
184 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
185};
186
ea45fe4e
SR		 187/* DCB number of traffic classes nested attributes. */
188static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
189 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
190 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
191 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
192 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
193};
194
9ab933ab
JF		 195static LIST_HEAD(dcb_app_list);
196static DEFINE_SPINLOCK(dcb_lock);
197
33a03aad
TG		 198static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
199 u32 flags, struct nlmsghdr **nlhp)
200{
201 struct sk_buff *skb;
202 struct dcbmsg *dcb;
203 struct nlmsghdr *nlh;
204
205 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
206 if (!skb)
207 return NULL;
208
209 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
b3908e22 210 BUG_ON(!nlh);
33a03aad
TG		 211
212 dcb = nlmsg_data(nlh);
213 dcb->dcb_family = AF_UNSPEC;
214 dcb->cmd = cmd;
215 dcb->dcb_pad = 0;
216
217 if (nlhp)
218 *nlhp = nlh;
219
220 return skb;
221}
222
7be99413
TG		 223static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
224 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 225{
2f90b865
AD		 226 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
227 if (!netdev->dcbnl_ops->getstate)
3d1f4869 228 return -EOPNOTSUPP;
2f90b865 229
7be99413
TG		 230 return nla_put_u8(skb, DCB_ATTR_STATE,
231 netdev->dcbnl_ops->getstate(netdev));
2f90b865
AD		 232}
233
7be99413
TG		 234static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
235 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 236{
2f90b865
AD		 237 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
238 u8 value;
3d1f4869 239 int ret;
2f90b865
AD		 240 int i;
241 int getall = 0;
242
3d1f4869
TG		 243 if (!tb[DCB_ATTR_PFC_CFG])
244 return -EINVAL;
245
246 if (!netdev->dcbnl_ops->getpfccfg)
247 return -EOPNOTSUPP;
2f90b865
AD		 248
249 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
250 tb[DCB_ATTR_PFC_CFG],
251 dcbnl_pfc_up_nest);
252 if (ret)
3d1f4869 253 return ret;
2f90b865 254
7be99413 255 nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
2f90b865 256 if (!nest)
3d1f4869 257 return -EMSGSIZE;
2f90b865
AD		 258
259 if (data[DCB_PFC_UP_ATTR_ALL])
260 getall = 1;
261
262 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
263 if (!getall && !data[i])
264 continue;
265
266 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
267 &value);
7be99413 268 ret = nla_put_u8(skb, i, value);
2f90b865 269 if (ret) {
7be99413 270 nla_nest_cancel(skb, nest);
3d1f4869 271 return ret;
2f90b865
AD		 272 }
273 }
7be99413 274 nla_nest_end(skb, nest);
2f90b865
AD		 275
276 return 0;
2f90b865
AD		 277}
278
7be99413
TG		 279static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
280 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 281{
2f90b865 282 u8 perm_addr[MAX_ADDR_LEN];
2f90b865
AD		 283
284 if (!netdev->dcbnl_ops->getpermhwaddr)
3d1f4869 285 return -EOPNOTSUPP;
2f90b865 286
29cd8ae0 287 memset(perm_addr, 0, sizeof(perm_addr));
2f90b865
AD		 288 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
289
7be99413 290 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
2f90b865
AD		 291}
292
7be99413
TG		 293static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
294 u32 seq, struct nlattr **tb, struct sk_buff *skb)
46132188 295{
46132188
AD		 296 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
297 u8 value;
3d1f4869 298 int ret;
46132188
AD		 299 int i;
300 int getall = 0;
301
3d1f4869
TG		 302 if (!tb[DCB_ATTR_CAP])
303 return -EINVAL;
304
305 if (!netdev->dcbnl_ops->getcap)
306 return -EOPNOTSUPP;
46132188
AD		 307
308 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
309 dcbnl_cap_nest);
310 if (ret)
3d1f4869 311 return ret;
46132188 312
7be99413 313 nest = nla_nest_start(skb, DCB_ATTR_CAP);
46132188 314 if (!nest)
3d1f4869 315 return -EMSGSIZE;
46132188
AD		 316
317 if (data[DCB_CAP_ATTR_ALL])
318 getall = 1;
319
320 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
321 if (!getall && !data[i])
322 continue;
323
324 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
7be99413 325 ret = nla_put_u8(skb, i, value);
46132188 326 if (ret) {
7be99413 327 nla_nest_cancel(skb, nest);
3d1f4869 328 return ret;
46132188
AD		 329 }
330 }
331 }
7be99413 332 nla_nest_end(skb, nest);
46132188
AD		 333
334 return 0;
46132188
AD		 335}
336
7be99413
TG		 337static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
338 u32 seq, struct nlattr **tb, struct sk_buff *skb)
33dbabc4 339{
33dbabc4
AD		 340 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
341 u8 value;
3d1f4869 342 int ret;
33dbabc4
AD		 343 int i;
344 int getall = 0;
345
3d1f4869
TG		 346 if (!tb[DCB_ATTR_NUMTCS])
347 return -EINVAL;
348
349 if (!netdev->dcbnl_ops->getnumtcs)
350 return -EOPNOTSUPP;
33dbabc4
AD		 351
352 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
353 dcbnl_numtcs_nest);
3d1f4869
TG		 354 if (ret)
355 return ret;
33dbabc4 356
7be99413 357 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
3d1f4869
TG		 358 if (!nest)
359 return -EMSGSIZE;
33dbabc4
AD		 360
361 if (data[DCB_NUMTCS_ATTR_ALL])
362 getall = 1;
363
364 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
365 if (!getall && !data[i])
366 continue;
367
368 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
369 if (!ret) {
7be99413 370 ret = nla_put_u8(skb, i, value);
33dbabc4 371 if (ret) {
7be99413 372 nla_nest_cancel(skb, nest);
3d1f4869 373 return ret;
33dbabc4 374 }
3d1f4869
TG		 375 } else
376 return -EINVAL;
33dbabc4 377 }
7be99413 378 nla_nest_end(skb, nest);
33dbabc4
AD		 379
380 return 0;
33dbabc4
AD		 381}
382
7be99413
TG		 383static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
384 u32 seq, struct nlattr **tb, struct sk_buff *skb)
33dbabc4
AD		 385{
386 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
3d1f4869 387 int ret;
33dbabc4
AD		 388 u8 value;
389 int i;
390
3d1f4869
TG		 391 if (!tb[DCB_ATTR_NUMTCS])
392 return -EINVAL;
393
394 if (!netdev->dcbnl_ops->setnumtcs)
395 return -EOPNOTSUPP;
33dbabc4
AD		 396
397 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
398 dcbnl_numtcs_nest);
7be99413 399 if (ret)
3d1f4869 400 return ret;
33dbabc4
AD		 401
402 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
403 if (data[i] == NULL)
404 continue;
405
406 value = nla_get_u8(data[i]);
407
408 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
33dbabc4 409 if (ret)
7be99413 410 break;
33dbabc4
AD		 411 }
412
7be99413 413 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
33dbabc4
AD		 414}
415
7be99413
TG		 416static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
417 u32 seq, struct nlattr **tb, struct sk_buff *skb)
0eb3aa9b 418{
0eb3aa9b 419 if (!netdev->dcbnl_ops->getpfcstate)
3d1f4869 420 return -EOPNOTSUPP;
0eb3aa9b 421
7be99413
TG		 422 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
423 netdev->dcbnl_ops->getpfcstate(netdev));
0eb3aa9b
AD		 424}
425
7be99413
TG		 426static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
427 u32 seq, struct nlattr **tb, struct sk_buff *skb)
0eb3aa9b 428{
0eb3aa9b
AD		 429 u8 value;
430
3d1f4869 431 if (!tb[DCB_ATTR_PFC_STATE])
7be99413 432 return -EINVAL;
0eb3aa9b 433
3d1f4869
TG		 434 if (!netdev->dcbnl_ops->setpfcstate)
435 return -EOPNOTSUPP;
436
0eb3aa9b
AD		 437 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
438
439 netdev->dcbnl_ops->setpfcstate(netdev, value);
440
7be99413 441 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
0eb3aa9b
AD		 442}
443
7be99413
TG		 444static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
445 u32 seq, struct nlattr **tb, struct sk_buff *skb)
57949686 446{
57949686
YZ		 447 struct nlattr *app_nest;
448 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
449 u16 id;
450 u8 up, idtype;
3d1f4869 451 int ret;
57949686 452
3dce38a0 453 if (!tb[DCB_ATTR_APP])
3d1f4869 454 return -EINVAL;
57949686
YZ		 455
456 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
457 dcbnl_app_nest);
458 if (ret)
3d1f4869 459 return ret;
57949686 460
57949686
YZ		 461 /* all must be non-null */
462 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
463 (!app_tb[DCB_APP_ATTR_ID]))
3d1f4869 464 return -EINVAL;
57949686
YZ		 465
466 /* either by eth type or by socket number */
467 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
468 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
469 (idtype != DCB_APP_IDTYPE_PORTNUM))
3d1f4869 470 return -EINVAL;
57949686
YZ		 471
472 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
3dce38a0
JF		 473
474 if (netdev->dcbnl_ops->getapp) {
475 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
476 } else {
477 struct dcb_app app = {
478 .selector = idtype,
479 .protocol = id,
480 };
481 up = dcb_getapp(netdev, &app);
482 }
57949686 483
7be99413 484 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
d3337de5 485 if (!app_nest)
3d1f4869 486 return -EMSGSIZE;
d3337de5 487
7be99413 488 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
57949686
YZ		 489 if (ret)
490 goto out_cancel;
491
7be99413 492 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
57949686
YZ		 493 if (ret)
494 goto out_cancel;
495
7be99413 496 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
57949686
YZ		 497 if (ret)
498 goto out_cancel;
499
7be99413 500 nla_nest_end(skb, app_nest);
57949686 501
3d1f4869 502 return 0;
57949686
YZ		 503
504out_cancel:
7be99413 505 nla_nest_cancel(skb, app_nest);
57949686
YZ		 506 return ret;
507}
508
7be99413
TG		 509static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
510 u32 seq, struct nlattr **tb, struct sk_buff *skb)
57949686 511{
3d1f4869 512 int ret;
57949686
YZ		 513 u16 id;
514 u8 up, idtype;
515 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
516
9ab933ab 517 if (!tb[DCB_ATTR_APP])
3d1f4869 518 return -EINVAL;
57949686
YZ		 519
520 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
521 dcbnl_app_nest);
522 if (ret)
3d1f4869 523 return ret;
57949686 524
57949686
YZ		 525 /* all must be non-null */
526 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
527 (!app_tb[DCB_APP_ATTR_ID]) ||
528 (!app_tb[DCB_APP_ATTR_PRIORITY]))
3d1f4869 529 return -EINVAL;
57949686
YZ		 530
531 /* either by eth type or by socket number */
532 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
533 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
534 (idtype != DCB_APP_IDTYPE_PORTNUM))
3d1f4869 535 return -EINVAL;
57949686
YZ		 536
537 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
538 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
539
9ab933ab 540 if (netdev->dcbnl_ops->setapp) {
3d1f4869 541 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
9ab933ab
JF		 542 } else {
543 struct dcb_app app;
544 app.selector = idtype;
545 app.protocol = id;
546 app.priority = up;
3d1f4869 547 ret = dcb_setapp(netdev, &app);
9ab933ab
JF		 548 }
549
7be99413 550 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
08157984 551 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
3d1f4869 552
57949686
YZ		 553 return ret;
554}
555
7be99413
TG		 556static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
557 struct nlattr **tb, struct sk_buff *skb, int dir)
2f90b865 558{
2f90b865
AD		 559 struct nlattr *pg_nest, *param_nest, *data;
560 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
561 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
562 u8 prio, pgid, tc_pct, up_map;
3d1f4869 563 int ret;
2f90b865
AD		 564 int getall = 0;
565 int i;
566
3d1f4869
TG		 567 if (!tb[DCB_ATTR_PG_CFG])
568 return -EINVAL;
569
570 if (!netdev->dcbnl_ops->getpgtccfgtx ||
2f90b865
AD		 571 !netdev->dcbnl_ops->getpgtccfgrx ||
572 !netdev->dcbnl_ops->getpgbwgcfgtx ||
573 !netdev->dcbnl_ops->getpgbwgcfgrx)
3d1f4869 574 return -EOPNOTSUPP;
2f90b865
AD		 575
576 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
577 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
2f90b865 578 if (ret)
3d1f4869 579 return ret;
2f90b865 580
7be99413 581 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
2f90b865 582 if (!pg_nest)
3d1f4869 583 return -EMSGSIZE;
2f90b865
AD		 584
585 if (pg_tb[DCB_PG_ATTR_TC_ALL])
586 getall = 1;
587
588 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
589 if (!getall && !pg_tb[i])
590 continue;
591
592 if (pg_tb[DCB_PG_ATTR_TC_ALL])
593 data = pg_tb[DCB_PG_ATTR_TC_ALL];
594 else
595 data = pg_tb[i];
596 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
597 data, dcbnl_tc_param_nest);
598 if (ret)
599 goto err_pg;
600
7be99413 601 param_nest = nla_nest_start(skb, i);
2f90b865
AD		 602 if (!param_nest)
603 goto err_pg;
604
605 pgid = DCB_ATTR_VALUE_UNDEFINED;
606 prio = DCB_ATTR_VALUE_UNDEFINED;
607 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
608 up_map = DCB_ATTR_VALUE_UNDEFINED;
609
610 if (dir) {
611 /* Rx */
612 netdev->dcbnl_ops->getpgtccfgrx(netdev,
613 i - DCB_PG_ATTR_TC_0, &prio,
614 &pgid, &tc_pct, &up_map);
615 } else {
616 /* Tx */
617 netdev->dcbnl_ops->getpgtccfgtx(netdev,
618 i - DCB_PG_ATTR_TC_0, &prio,
619 &pgid, &tc_pct, &up_map);
620 }
621
622 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
623 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 624 ret = nla_put_u8(skb,
2f90b865
AD		 625 DCB_TC_ATTR_PARAM_PGID, pgid);
626 if (ret)
627 goto err_param;
628 }
629 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
630 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 631 ret = nla_put_u8(skb,
2f90b865
AD		 632 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
633 if (ret)
634 goto err_param;
635 }
636 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
637 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 638 ret = nla_put_u8(skb,
2f90b865
AD		 639 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
640 if (ret)
641 goto err_param;
642 }
643 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
644 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
7be99413 645 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
2f90b865
AD		 646 tc_pct);
647 if (ret)
648 goto err_param;
649 }
7be99413 650 nla_nest_end(skb, param_nest);
2f90b865
AD		 651 }
652
653 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
654 getall = 1;
655 else
656 getall = 0;
657
658 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
659 if (!getall && !pg_tb[i])
660 continue;
661
662 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
663
664 if (dir) {
665 /* Rx */
666 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
667 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
668 } else {
669 /* Tx */
670 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
671 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
672 }
7be99413 673 ret = nla_put_u8(skb, i, tc_pct);
2f90b865
AD		 674 if (ret)
675 goto err_pg;
676 }
677
7be99413 678 nla_nest_end(skb, pg_nest);
2f90b865
AD		 679
680 return 0;
681
682err_param:
7be99413 683 nla_nest_cancel(skb, param_nest);
2f90b865 684err_pg:
7be99413 685 nla_nest_cancel(skb, pg_nest);
3d1f4869
TG		 686
687 return -EMSGSIZE;
2f90b865
AD		 688}
689
7be99413
TG		 690static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
691 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 692{
7be99413 693 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
2f90b865
AD		 694}
695
7be99413
TG		 696static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
697 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 698{
7be99413 699 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
2f90b865
AD		 700}
701
7be99413
TG		 702static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
703 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 704{
2f90b865
AD		 705 u8 value;
706
3d1f4869 707 if (!tb[DCB_ATTR_STATE])
7be99413 708 return -EINVAL;
2f90b865 709
3d1f4869
TG		 710 if (!netdev->dcbnl_ops->setstate)
711 return -EOPNOTSUPP;
712
2f90b865
AD		 713 value = nla_get_u8(tb[DCB_ATTR_STATE]);
714
7be99413
TG		 715 return nla_put_u8(skb, DCB_ATTR_STATE,
716 netdev->dcbnl_ops->setstate(netdev, value));
2f90b865
AD		 717}
718
7be99413
TG		 719static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
720 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865
AD		 721{
722 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
723 int i;
3d1f4869 724 int ret;
2f90b865
AD		 725 u8 value;
726
3d1f4869
TG		 727 if (!tb[DCB_ATTR_PFC_CFG])
728 return -EINVAL;
729
730 if (!netdev->dcbnl_ops->setpfccfg)
731 return -EOPNOTSUPP;
2f90b865
AD		 732
733 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
734 tb[DCB_ATTR_PFC_CFG],
735 dcbnl_pfc_up_nest);
736 if (ret)
3d1f4869 737 return ret;
2f90b865
AD		 738
739 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
740 if (data[i] == NULL)
741 continue;
742 value = nla_get_u8(data[i]);
743 netdev->dcbnl_ops->setpfccfg(netdev,
744 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
745 }
746
7be99413 747 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
2f90b865
AD		 748}
749
7be99413
TG		 750static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
751 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 752{
3d1f4869 753 int ret;
2f90b865 754
3d1f4869
TG		 755 if (!tb[DCB_ATTR_SET_ALL])
756 return -EINVAL;
757
758 if (!netdev->dcbnl_ops->setall)
759 return -EOPNOTSUPP;
2f90b865 760
7be99413
TG		 761 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
762 netdev->dcbnl_ops->setall(netdev));
08157984 763 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
2f90b865
AD		 764
765 return ret;
766}
767
7be99413
TG		 768static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
769 u32 seq, struct nlattr **tb, struct sk_buff *skb,
770 int dir)
2f90b865
AD		 771{
772 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
773 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
3d1f4869 774 int ret;
2f90b865
AD		 775 int i;
776 u8 pgid;
777 u8 up_map;
778 u8 prio;
779 u8 tc_pct;
780
3d1f4869
TG		 781 if (!tb[DCB_ATTR_PG_CFG])
782 return -EINVAL;
783
784 if (!netdev->dcbnl_ops->setpgtccfgtx ||
2f90b865
AD		 785 !netdev->dcbnl_ops->setpgtccfgrx ||
786 !netdev->dcbnl_ops->setpgbwgcfgtx ||
787 !netdev->dcbnl_ops->setpgbwgcfgrx)
3d1f4869 788 return -EOPNOTSUPP;
2f90b865
AD		 789
790 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
791 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
792 if (ret)
3d1f4869 793 return ret;
2f90b865
AD		 794
795 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
796 if (!pg_tb[i])
797 continue;
798
799 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
800 pg_tb[i], dcbnl_tc_param_nest);
801 if (ret)
3d1f4869 802 return ret;
2f90b865
AD		 803
804 pgid = DCB_ATTR_VALUE_UNDEFINED;
805 prio = DCB_ATTR_VALUE_UNDEFINED;
806 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
807 up_map = DCB_ATTR_VALUE_UNDEFINED;
808
809 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
810 prio =
811 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
812
813 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
814 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
815
816 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
817 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
818
819 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
820 up_map =
821 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
822
823 /* dir: Tx = 0, Rx = 1 */
824 if (dir) {
825 /* Rx */
826 netdev->dcbnl_ops->setpgtccfgrx(netdev,
827 i - DCB_PG_ATTR_TC_0,
828 prio, pgid, tc_pct, up_map);
829 } else {
830 /* Tx */
831 netdev->dcbnl_ops->setpgtccfgtx(netdev,
832 i - DCB_PG_ATTR_TC_0,
833 prio, pgid, tc_pct, up_map);
834 }
835 }
836
837 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
838 if (!pg_tb[i])
839 continue;
840
841 tc_pct = nla_get_u8(pg_tb[i]);
842
843 /* dir: Tx = 0, Rx = 1 */
844 if (dir) {
845 /* Rx */
846 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
847 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
848 } else {
849 /* Tx */
850 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
851 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
852 }
853 }
854
bb1dfefd 855 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
2f90b865
AD		 856}
857
7be99413
TG		 858static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
859 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 860{
7be99413 861 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
2f90b865
AD		 862}
863
7be99413
TG		 864static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
865 u32 seq, struct nlattr **tb, struct sk_buff *skb)
2f90b865 866{
7be99413 867 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
2f90b865
AD		 868}
869
7be99413
TG		 870static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
871 u32 seq, struct nlattr **tb, struct sk_buff *skb)
859ee3c4 872{
859ee3c4
AD		 873 struct nlattr *bcn_nest;
874 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
875 u8 value_byte;
876 u32 value_integer;
3d1f4869 877 int ret;
859ee3c4
AD		 878 bool getall = false;
879 int i;
880
3d1f4869
TG		 881 if (!tb[DCB_ATTR_BCN])
882 return -EINVAL;
883
884 if (!netdev->dcbnl_ops->getbcnrp ||
859ee3c4 885 !netdev->dcbnl_ops->getbcncfg)
3d1f4869 886 return -EOPNOTSUPP;
859ee3c4
AD		 887
888 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
889 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
859ee3c4 890 if (ret)
3d1f4869 891 return ret;
859ee3c4 892
7be99413 893 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
859ee3c4 894 if (!bcn_nest)
3d1f4869 895 return -EMSGSIZE;
859ee3c4
AD		 896
897 if (bcn_tb[DCB_BCN_ATTR_ALL])
898 getall = true;
899
900 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
901 if (!getall && !bcn_tb[i])
902 continue;
903
904 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
905 &value_byte);
7be99413 906 ret = nla_put_u8(skb, i, value_byte);
859ee3c4
AD		 907 if (ret)
908 goto err_bcn;
909 }
910
f4314e81 911 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 912 if (!getall && !bcn_tb[i])
913 continue;
914
915 netdev->dcbnl_ops->getbcncfg(netdev, i,
916 &value_integer);
7be99413 917 ret = nla_put_u32(skb, i, value_integer);
859ee3c4
AD		 918 if (ret)
919 goto err_bcn;
920 }
921
7be99413 922 nla_nest_end(skb, bcn_nest);
859ee3c4
AD		 923
924 return 0;
925
926err_bcn:
7be99413 927 nla_nest_cancel(skb, bcn_nest);
859ee3c4
AD		 928 return ret;
929}
930
7be99413
TG		 931static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
932 u32 seq, struct nlattr **tb, struct sk_buff *skb)
859ee3c4
AD		 933{
934 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
935 int i;
3d1f4869 936 int ret;
859ee3c4
AD		 937 u8 value_byte;
938 u32 value_int;
939
3d1f4869
TG		 940 if (!tb[DCB_ATTR_BCN])
941 return -EINVAL;
942
943 if (!netdev->dcbnl_ops->setbcncfg ||
f64f9e71 944 !netdev->dcbnl_ops->setbcnrp)
3d1f4869 945 return -EOPNOTSUPP;
859ee3c4
AD		 946
947 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
948 tb[DCB_ATTR_BCN],
949 dcbnl_pfc_up_nest);
950 if (ret)
3d1f4869 951 return ret;
859ee3c4
AD		 952
953 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
954 if (data[i] == NULL)
955 continue;
956 value_byte = nla_get_u8(data[i]);
957 netdev->dcbnl_ops->setbcnrp(netdev,
958 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
959 }
960
f4314e81 961 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
859ee3c4
AD		 962 if (data[i] == NULL)
963 continue;
964 value_int = nla_get_u32(data[i]);
965 netdev->dcbnl_ops->setbcncfg(netdev,
966 i, value_int);
967 }
968
3d1f4869 969 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
859ee3c4
AD		 970}
971
dc6ed1df
SR		 972static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
973 int app_nested_type, int app_info_type,
974 int app_entry_type)
eed84713
SR		 975{
976 struct dcb_peer_app_info info;
977 struct dcb_app *table = NULL;
978 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
979 u16 app_count;
980 int err;
981
982
983 /**
984 * retrieve the peer app configuration form the driver. If the driver
985 * handlers fail exit without doing anything
986 */
987 err = ops->peer_getappinfo(netdev, &info, &app_count);
988 if (!err && app_count) {
989 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
990 if (!table)
991 return -ENOMEM;
992
993 err = ops->peer_getapptable(netdev, table);
994 }
995
996 if (!err) {
997 u16 i;
998 struct nlattr *app;
999
1000 /**
1001 * build the message, from here on the only possible failure
1002 * is due to the skb size
1003 */
1004 err = -EMSGSIZE;
1005
dc6ed1df 1006 app = nla_nest_start(skb, app_nested_type);
eed84713
SR		 1007 if (!app)
1008 goto nla_put_failure;
1009
1eb4c977
DM		 1010 if (app_info_type &&
1011 nla_put(skb, app_info_type, sizeof(info), &info))
1012 goto nla_put_failure;
eed84713 1013
1eb4c977
DM		 1014 for (i = 0; i < app_count; i++) {
1015 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1016 &table[i]))
1017 goto nla_put_failure;
1018 }
eed84713
SR		 1019 nla_nest_end(skb, app);
1020 }
1021 err = 0;
1022
1023nla_put_failure:
1024 kfree(table);
1025 return err;
1026}
3e29027a
JF		 1027
1028/* Handle IEEE 802.1Qaz GET commands. */
314b4778 1029static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
3e29027a 1030{
9ab933ab
JF		 1031 struct nlattr *ieee, *app;
1032 struct dcb_app_type *itr;
3e29027a 1033 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
c7797baf 1034 int dcbx;
3d1f4869 1035 int err;
3e29027a 1036
1eb4c977 1037 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
3d1f4869
TG		 1038 return -EMSGSIZE;
1039
3e29027a
JF		 1040 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1041 if (!ieee)
3d1f4869 1042 return -EMSGSIZE;
3e29027a
JF		 1043
1044 if (ops->ieee_getets) {
1045 struct ieee_ets ets;
29cd8ae0 1046 memset(&ets, 0, sizeof(ets));
3e29027a 1047 err = ops->ieee_getets(netdev, &ets);
1eb4c977
DM		 1048 if (!err &&
1049 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
3d1f4869 1050 return -EMSGSIZE;
3e29027a
JF		 1051 }
1052
08f10aff
AV		 1053 if (ops->ieee_getmaxrate) {
1054 struct ieee_maxrate maxrate;
29cd8ae0 1055 memset(&maxrate, 0, sizeof(maxrate));
08f10aff
AV		 1056 err = ops->ieee_getmaxrate(netdev, &maxrate);
1057 if (!err) {
1058 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1059 sizeof(maxrate), &maxrate);
1060 if (err)
3d1f4869 1061 return -EMSGSIZE;
08f10aff
AV		 1062 }
1063 }
1064
3e29027a
JF		 1065 if (ops->ieee_getpfc) {
1066 struct ieee_pfc pfc;
29cd8ae0 1067 memset(&pfc, 0, sizeof(pfc));
3e29027a 1068 err = ops->ieee_getpfc(netdev, &pfc);
1eb4c977
DM		 1069 if (!err &&
1070 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
3d1f4869 1071 return -EMSGSIZE;
3e29027a
JF		 1072 }
1073
9ab933ab
JF		 1074 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1075 if (!app)
3d1f4869 1076 return -EMSGSIZE;
9ab933ab
JF		 1077
1078 spin_lock(&dcb_lock);
1079 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1080 if (itr->ifindex == netdev->ifindex) {
70bfa2d2
DC		 1081 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1082 &itr->app);
1083 if (err) {
1084 spin_unlock(&dcb_lock);
3d1f4869 1085 return -EMSGSIZE;
70bfa2d2
DC		 1086 }
1087 }
9ab933ab 1088 }
c7797baf
JF		 1089
1090 if (netdev->dcbnl_ops->getdcbx)
1091 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1092 else
1093 dcbx = -EOPNOTSUPP;
1094
9ab933ab
JF		 1095 spin_unlock(&dcb_lock);
1096 nla_nest_end(skb, app);
1097
eed84713
SR		 1098 /* get peer info if available */
1099 if (ops->ieee_peer_getets) {
1100 struct ieee_ets ets;
29cd8ae0 1101 memset(&ets, 0, sizeof(ets));
eed84713 1102 err = ops->ieee_peer_getets(netdev, &ets);
1eb4c977
DM		 1103 if (!err &&
1104 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
3d1f4869 1105 return -EMSGSIZE;
eed84713
SR		 1106 }
1107
1108 if (ops->ieee_peer_getpfc) {
1109 struct ieee_pfc pfc;
29cd8ae0 1110 memset(&pfc, 0, sizeof(pfc));
eed84713 1111 err = ops->ieee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1112 if (!err &&
1113 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
3d1f4869 1114 return -EMSGSIZE;
eed84713
SR		 1115 }
1116
1117 if (ops->peer_getappinfo && ops->peer_getapptable) {
dc6ed1df
SR		 1118 err = dcbnl_build_peer_app(netdev, skb,
1119 DCB_ATTR_IEEE_PEER_APP,
1120 DCB_ATTR_IEEE_APP_UNSPEC,
1121 DCB_ATTR_IEEE_APP);
eed84713 1122 if (err)
3d1f4869 1123 return -EMSGSIZE;
eed84713
SR		 1124 }
1125
3e29027a 1126 nla_nest_end(skb, ieee);
c7797baf
JF		 1127 if (dcbx >= 0) {
1128 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1129 if (err)
3d1f4869 1130 return -EMSGSIZE;
c7797baf 1131 }
3e29027a 1132
314b4778 1133 return 0;
3e29027a
JF		 1134}
1135
5b7f7626
SR		 1136static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1137 int dir)
1138{
1139 u8 pgid, up_map, prio, tc_pct;
1140 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1141 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1142 struct nlattr *pg = nla_nest_start(skb, i);
1143
1144 if (!pg)
3d1f4869 1145 return -EMSGSIZE;
5b7f7626
SR		 1146
1147 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1148 struct nlattr *tc_nest = nla_nest_start(skb, i);
1149
1150 if (!tc_nest)
3d1f4869 1151 return -EMSGSIZE;
5b7f7626
SR		 1152
1153 pgid = DCB_ATTR_VALUE_UNDEFINED;
1154 prio = DCB_ATTR_VALUE_UNDEFINED;
1155 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1156 up_map = DCB_ATTR_VALUE_UNDEFINED;
1157
1158 if (!dir)
1159 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1160 &prio, &pgid, &tc_pct, &up_map);
1161 else
1162 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1163 &prio, &pgid, &tc_pct, &up_map);
1164
1eb4c977
DM		 1165 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1166 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1167 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1168 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
3d1f4869 1169 return -EMSGSIZE;
5b7f7626
SR		 1170 nla_nest_end(skb, tc_nest);
1171 }
1172
1173 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1174 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1175
1176 if (!dir)
1177 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1178 &tc_pct);
1179 else
1180 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1181 &tc_pct);
1eb4c977 1182 if (nla_put_u8(skb, i, tc_pct))
3d1f4869 1183 return -EMSGSIZE;
5b7f7626
SR		 1184 }
1185 nla_nest_end(skb, pg);
1186 return 0;
5b7f7626
SR		 1187}
1188
1189static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1190{
1191 struct nlattr *cee, *app;
1192 struct dcb_app_type *itr;
1193 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1194 int dcbx, i, err = -EMSGSIZE;
1195 u8 value;
1196
1eb4c977
DM		 1197 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1198 goto nla_put_failure;
5b7f7626
SR		 1199 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1200 if (!cee)
1201 goto nla_put_failure;
1202
1203 /* local pg */
1204 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1205 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1206 if (err)
1207 goto nla_put_failure;
1208 }
1209
1210 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1211 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1212 if (err)
1213 goto nla_put_failure;
1214 }
1215
1216 /* local pfc */
1217 if (ops->getpfccfg) {
1218 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1219
1220 if (!pfc_nest)
1221 goto nla_put_failure;
1222
1223 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1224 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
1eb4c977
DM		 1225 if (nla_put_u8(skb, i, value))
1226 goto nla_put_failure;
5b7f7626
SR		 1227 }
1228 nla_nest_end(skb, pfc_nest);
1229 }
1230
1231 /* local app */
1232 spin_lock(&dcb_lock);
1233 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1234 if (!app)
40f5d72a 1235 goto dcb_unlock;
5b7f7626
SR		 1236
1237 list_for_each_entry(itr, &dcb_app_list, list) {
e290ed81 1238 if (itr->ifindex == netdev->ifindex) {
5b7f7626
SR		 1239 struct nlattr *app_nest = nla_nest_start(skb,
1240 DCB_ATTR_APP);
1241 if (!app_nest)
1242 goto dcb_unlock;
1243
1244 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1245 itr->app.selector);
1246 if (err)
1247 goto dcb_unlock;
1248
1249 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1250 itr->app.protocol);
1251 if (err)
1252 goto dcb_unlock;
1253
1254 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1255 itr->app.priority);
1256 if (err)
1257 goto dcb_unlock;
1258
1259 nla_nest_end(skb, app_nest);
1260 }
1261 }
1262 nla_nest_end(skb, app);
1263
1264 if (netdev->dcbnl_ops->getdcbx)
1265 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1266 else
1267 dcbx = -EOPNOTSUPP;
1268
1269 spin_unlock(&dcb_lock);
1270
1271 /* features flags */
1272 if (ops->getfeatcfg) {
1273 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1274 if (!feat)
1275 goto nla_put_failure;
1276
1277 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1278 i++)
1eb4c977
DM		 1279 if (!ops->getfeatcfg(netdev, i, &value) &&
1280 nla_put_u8(skb, i, value))
1281 goto nla_put_failure;
5b7f7626
SR		 1282
1283 nla_nest_end(skb, feat);
1284 }
1285
1286 /* peer info if available */
1287 if (ops->cee_peer_getpg) {
1288 struct cee_pg pg;
29cd8ae0 1289 memset(&pg, 0, sizeof(pg));
5b7f7626 1290 err = ops->cee_peer_getpg(netdev, &pg);
1eb4c977
DM		 1291 if (!err &&
1292 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1293 goto nla_put_failure;
5b7f7626
SR		 1294 }
1295
1296 if (ops->cee_peer_getpfc) {
1297 struct cee_pfc pfc;
29cd8ae0 1298 memset(&pfc, 0, sizeof(pfc));
5b7f7626 1299 err = ops->cee_peer_getpfc(netdev, &pfc);
1eb4c977
DM		 1300 if (!err &&
1301 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1302 goto nla_put_failure;
5b7f7626
SR		 1303 }
1304
1305 if (ops->peer_getappinfo && ops->peer_getapptable) {
1306 err = dcbnl_build_peer_app(netdev, skb,
1307 DCB_ATTR_CEE_PEER_APP_TABLE,
1308 DCB_ATTR_CEE_PEER_APP_INFO,
1309 DCB_ATTR_CEE_PEER_APP);
1310 if (err)
1311 goto nla_put_failure;
1312 }
1313 nla_nest_end(skb, cee);
1314
1315 /* DCBX state */
1316 if (dcbx >= 0) {
1317 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1318 if (err)
1319 goto nla_put_failure;
1320 }
1321 return 0;
1322
1323dcb_unlock:
1324 spin_unlock(&dcb_lock);
1325nla_put_failure:
1326 return err;
1327}
1328
1329static int dcbnl_notify(struct net_device *dev, int event, int cmd,
15e47304 1330 u32 seq, u32 portid, int dcbx_ver)
314b4778
JF		 1331{
1332 struct net *net = dev_net(dev);
1333 struct sk_buff *skb;
1334 struct nlmsghdr *nlh;
314b4778
JF		 1335 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1336 int err;
1337
1338 if (!ops)
1339 return -EOPNOTSUPP;
1340
15e47304 1341 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
314b4778
JF		 1342 if (!skb)
1343 return -ENOBUFS;
1344
5b7f7626
SR		 1345 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1346 err = dcbnl_ieee_fill(skb, dev);
1347 else
1348 err = dcbnl_cee_fill(skb, dev);
1349
314b4778
JF		 1350 if (err < 0) {
1351 /* Report error to broadcast listeners */
ab6d4707 1352 nlmsg_free(skb);
314b4778
JF		 1353 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1354 } else {
1355 /* End nlmsg and notify broadcast listeners */
1356 nlmsg_end(skb, nlh);
1357 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1358 }
1359
1360 return err;
1361}
5b7f7626
SR		 1362
1363int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
15e47304 1364 u32 seq, u32 portid)
5b7f7626 1365{
15e47304 1366 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
5b7f7626
SR		 1367}
1368EXPORT_SYMBOL(dcbnl_ieee_notify);
1369
1370int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
15e47304 1371 u32 seq, u32 portid)
5b7f7626 1372{
15e47304 1373 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
5b7f7626
SR		 1374}
1375EXPORT_SYMBOL(dcbnl_cee_notify);
314b4778
JF		 1376
1377/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1378 * be completed the entire msg is aborted and error value is returned.
1379 * No attempt is made to reconcile the case where only part of the
1380 * cmd can be completed.
1381 */
7be99413
TG		 1382static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1383 u32 seq, struct nlattr **tb, struct sk_buff *skb)
314b4778
JF		 1384{
1385 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1386 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
3d1f4869 1387 int err;
314b4778
JF		 1388
1389 if (!ops)
3d1f4869 1390 return -EOPNOTSUPP;
314b4778 1391
4003b658
JF		 1392 if (!tb[DCB_ATTR_IEEE])
1393 return -EINVAL;
1394
314b4778
JF		 1395 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1396 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1397 if (err)
1398 return err;
1399
1400 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1401 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1402 err = ops->ieee_setets(netdev, ets);
1403 if (err)
1404 goto err;
1405 }
1406
08f10aff
AV		 1407 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1408 struct ieee_maxrate *maxrate =
1409 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1410 err = ops->ieee_setmaxrate(netdev, maxrate);
1411 if (err)
1412 goto err;
1413 }
1414
314b4778
JF		 1415 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1416 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1417 err = ops->ieee_setpfc(netdev, pfc);
1418 if (err)
1419 goto err;
1420 }
1421
1422 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1423 struct nlattr *attr;
1424 int rem;
1425
1426 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1427 struct dcb_app *app_data;
1428 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1429 continue;
1430 app_data = nla_data(attr);
1431 if (ops->ieee_setapp)
1432 err = ops->ieee_setapp(netdev, app_data);
1433 else
b6db2174 1434 err = dcb_ieee_setapp(netdev, app_data);
314b4778
JF		 1435 if (err)
1436 goto err;
1437 }
1438 }
1439
1440err:
7be99413 1441 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
5b7f7626 1442 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
314b4778
JF		 1443 return err;
1444}
1445
7be99413
TG		 1446static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1447 u32 seq, struct nlattr **tb, struct sk_buff *skb)
314b4778 1448{
314b4778 1449 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
314b4778
JF		 1450
1451 if (!ops)
1452 return -EOPNOTSUPP;
1453
7be99413 1454 return dcbnl_ieee_fill(skb, netdev);
314b4778 1455}
f9ae7e4b 1456
7be99413
TG		 1457static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1458 u32 seq, struct nlattr **tb, struct sk_buff *skb)
f9ae7e4b
JF		 1459{
1460 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1461 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
3d1f4869 1462 int err;
f9ae7e4b
JF		 1463
1464 if (!ops)
1465 return -EOPNOTSUPP;
1466
1467 if (!tb[DCB_ATTR_IEEE])
1468 return -EINVAL;
1469
1470 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1471 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1472 if (err)
1473 return err;
1474
1475 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1476 struct nlattr *attr;
1477 int rem;
1478
1479 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1480 struct dcb_app *app_data;
1481
1482 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1483 continue;
1484 app_data = nla_data(attr);
1485 if (ops->ieee_delapp)
1486 err = ops->ieee_delapp(netdev, app_data);
1487 else
1488 err = dcb_ieee_delapp(netdev, app_data);
1489 if (err)
1490 goto err;
1491 }
1492 }
1493
1494err:
7be99413 1495 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
5b7f7626 1496 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
f9ae7e4b
JF		 1497 return err;
1498}
1499
1500
6241b625 1501/* DCBX configuration */
7be99413
TG		 1502static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1503 u32 seq, struct nlattr **tb, struct sk_buff *skb)
6241b625 1504{
6241b625 1505 if (!netdev->dcbnl_ops->getdcbx)
7f891cf1 1506 return -EOPNOTSUPP;
6241b625 1507
7be99413
TG		 1508 return nla_put_u8(skb, DCB_ATTR_DCBX,
1509 netdev->dcbnl_ops->getdcbx(netdev));
6241b625
SR		 1510}
1511
7be99413
TG		 1512static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1513 u32 seq, struct nlattr **tb, struct sk_buff *skb)
6241b625 1514{
6241b625
SR		 1515 u8 value;
1516
7f891cf1
SR		 1517 if (!netdev->dcbnl_ops->setdcbx)
1518 return -EOPNOTSUPP;
1519
1520 if (!tb[DCB_ATTR_DCBX])
1521 return -EINVAL;
6241b625
SR		 1522
1523 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1524
7be99413
TG		 1525 return nla_put_u8(skb, DCB_ATTR_DCBX,
1526 netdev->dcbnl_ops->setdcbx(netdev, value));
6241b625
SR		 1527}
1528
7be99413
TG		 1529static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1530 u32 seq, struct nlattr **tb, struct sk_buff *skb)
ea45fe4e 1531{
ea45fe4e
SR		 1532 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1533 u8 value;
7f891cf1 1534 int ret, i;
ea45fe4e
SR		 1535 int getall = 0;
1536
7f891cf1
SR		 1537 if (!netdev->dcbnl_ops->getfeatcfg)
1538 return -EOPNOTSUPP;
1539
1540 if (!tb[DCB_ATTR_FEATCFG])
1541 return -EINVAL;
ea45fe4e
SR		 1542
1543 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1544 dcbnl_featcfg_nest);
7f891cf1 1545 if (ret)
7be99413 1546 return ret;
ea45fe4e 1547
7be99413
TG		 1548 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1549 if (!nest)
1550 return -EMSGSIZE;
ea45fe4e
SR		 1551
1552 if (data[DCB_FEATCFG_ATTR_ALL])
1553 getall = 1;
1554
1555 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1556 if (!getall && !data[i])
1557 continue;
1558
1559 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
7f891cf1 1560 if (!ret)
7be99413 1561 ret = nla_put_u8(skb, i, value);
ea45fe4e 1562
7f891cf1 1563 if (ret) {
7be99413 1564 nla_nest_cancel(skb, nest);
7f891cf1
SR		 1565 goto nla_put_failure;
1566 }
ea45fe4e 1567 }
7be99413 1568 nla_nest_end(skb, nest);
ea45fe4e 1569
7f891cf1 1570nla_put_failure:
ea45fe4e
SR		 1571 return ret;
1572}
1573
7be99413
TG		 1574static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1575 u32 seq, struct nlattr **tb, struct sk_buff *skb)
ea45fe4e
SR		 1576{
1577 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
7f891cf1 1578 int ret, i;
ea45fe4e 1579 u8 value;
ea45fe4e 1580
7f891cf1
SR		 1581 if (!netdev->dcbnl_ops->setfeatcfg)
1582 return -ENOTSUPP;
1583
1584 if (!tb[DCB_ATTR_FEATCFG])
1585 return -EINVAL;
ea45fe4e
SR		 1586
1587 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1588 dcbnl_featcfg_nest);
1589
7f891cf1 1590 if (ret)
ea45fe4e 1591 goto err;
ea45fe4e
SR		 1592
1593 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1594 if (data[i] == NULL)
1595 continue;
1596
1597 value = nla_get_u8(data[i]);
1598
1599 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1600
1601 if (ret)
7f891cf1 1602 goto err;
ea45fe4e 1603 }
ea45fe4e 1604err:
7be99413 1605 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
7f891cf1 1606
ea45fe4e
SR		 1607 return ret;
1608}
1609
dc6ed1df 1610/* Handle CEE DCBX GET commands. */
7be99413
TG		 1611static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1612 u32 seq, struct nlattr **tb, struct sk_buff *skb)
dc6ed1df 1613{
dc6ed1df 1614 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
dc6ed1df
SR		 1615
1616 if (!ops)
1617 return -EOPNOTSUPP;
1618
7be99413 1619 return dcbnl_cee_fill(skb, netdev);
dc6ed1df
SR		 1620}
1621
33a03aad
TG		 1622struct reply_func {
1623 /* reply netlink message type */
1624 int type;
1625
1626 /* function to fill message contents */
1627 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1628 struct nlattr **, struct sk_buff *);
1629};
1630
1631static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
7be99413
TG		 1632 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1633 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1634 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1635 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1636 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1637 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1638 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1639 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1640 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1641 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1642 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1643 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1644 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1645 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1646 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1647 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1648 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1649 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1650 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1651 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1652 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1653 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1654 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1655 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1656 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1657 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1658 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
33a03aad
TG		 1659};
1660
661d2967 1661static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
2f90b865
AD		 1662{
1663 struct net *net = sock_net(skb->sk);
1664 struct net_device *netdev;
7a282bc3 1665 struct dcbmsg *dcb = nlmsg_data(nlh);
2f90b865 1666 struct nlattr *tb[DCB_ATTR_MAX + 1];
15e47304 1667 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
2f90b865 1668 int ret = -EINVAL;
33a03aad 1669 struct sk_buff *reply_skb;
39912f9c 1670 struct nlmsghdr *reply_nlh = NULL;
33a03aad 1671 const struct reply_func *fn;
2f90b865 1672
dfc47ef8
EB		 1673 if ((nlh->nlmsg_type == RTM_SETDCB) && !capable(CAP_NET_ADMIN))
1674 return -EPERM;
1675
2f90b865
AD		 1676 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1677 dcbnl_rtnl_policy);
1678 if (ret < 0)
1679 return ret;
1680
33a03aad
TG		 1681 if (dcb->cmd > DCB_CMD_MAX)
1682 return -EINVAL;
1683
1684 /* check if a reply function has been defined for the command */
1685 fn = &reply_funcs[dcb->cmd];
1686 if (!fn->cb)
1687 return -EOPNOTSUPP;
1688
2f90b865
AD		 1689 if (!tb[DCB_ATTR_IFNAME])
1690 return -EINVAL;
1691
7c77ab24 1692 netdev = dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
2f90b865 1693 if (!netdev)
3d1f4869 1694 return -ENODEV;
2f90b865 1695
3d1f4869
TG		 1696 if (!netdev->dcbnl_ops) {
1697 ret = -EOPNOTSUPP;
1698 goto out;
1699 }
2f90b865 1700
15e47304 1701 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
33a03aad
TG		 1702 nlh->nlmsg_flags, &reply_nlh);
1703 if (!reply_skb) {
1704 ret = -ENOBUFS;
1705 goto out;
1706 }
1707
1708 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1709 if (ret < 0) {
1710 nlmsg_free(reply_skb);
1711 goto out;
1712 }
1713
1714 nlmsg_end(reply_skb, reply_nlh);
1715
7c77ab24 1716 ret = rtnl_unicast(reply_skb, net, portid);
2f90b865
AD		 1717out:
1718 dev_put(netdev);
1719 return ret;
1720}
1721
716b31ab
TG		 1722static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1723 int ifindex, int prio)
1724{
1725 struct dcb_app_type *itr;
1726
1727 list_for_each_entry(itr, &dcb_app_list, list) {
1728 if (itr->app.selector == app->selector &&
1729 itr->app.protocol == app->protocol &&
1730 itr->ifindex == ifindex &&
1731 (!prio || itr->app.priority == prio))
1732 return itr;
1733 }
1734
1735 return NULL;
1736}
1737
4e4f2f69
TG		 1738static int dcb_app_add(const struct dcb_app *app, int ifindex)
1739{
1740 struct dcb_app_type *entry;
1741
1742 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1743 if (!entry)
1744 return -ENOMEM;
1745
1746 memcpy(&entry->app, app, sizeof(*app));
1747 entry->ifindex = ifindex;
1748 list_add(&entry->list, &dcb_app_list);
1749
1750 return 0;
1751}
1752
9ab933ab
JF		 1753/**
1754 * dcb_getapp - retrieve the DCBX application user priority
1755 *
1756 * On success returns a non-zero 802.1p user priority bitmap
1757 * otherwise returns 0 as the invalid user priority bitmap to
1758 * indicate an error.
1759 */
1760u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1761{
1762 struct dcb_app_type *itr;
1763 u8 prio = 0;
1764
1765 spin_lock(&dcb_lock);
716b31ab
TG		 1766 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1767 prio = itr->app.priority;
9ab933ab
JF		 1768 spin_unlock(&dcb_lock);
1769
1770 return prio;
1771}
1772EXPORT_SYMBOL(dcb_getapp);
1773
1774/**
b6db2174 1775 * dcb_setapp - add CEE dcb application data to app list
9ab933ab 1776 *
b6db2174
JF		 1777 * Priority 0 is an invalid priority in CEE spec. This routine
1778 * removes applications from the app list if the priority is
1779 * set to zero.
9ab933ab 1780 */
ab6baf98 1781int dcb_setapp(struct net_device *dev, struct dcb_app *new)
9ab933ab
JF		 1782{
1783 struct dcb_app_type *itr;
7ec79270 1784 struct dcb_app_type event;
4e4f2f69 1785 int err = 0;
7ec79270 1786
e290ed81 1787 event.ifindex = dev->ifindex;
7ec79270 1788 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 1789 if (dev->dcbnl_ops->getdcbx)
1790 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
9ab933ab
JF		 1791
1792 spin_lock(&dcb_lock);
1793 /* Search for existing match and replace */
716b31ab
TG		 1794 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1795 if (new->priority)
1796 itr->app.priority = new->priority;
1797 else {
1798 list_del(&itr->list);
1799 kfree(itr);
9ab933ab 1800 }
716b31ab 1801 goto out;
9ab933ab
JF		 1802 }
1803 /* App type does not exist add new application type */
4e4f2f69
TG		 1804 if (new->priority)
1805 err = dcb_app_add(new, dev->ifindex);
9ab933ab
JF		 1806out:
1807 spin_unlock(&dcb_lock);
4e4f2f69
TG		 1808 if (!err)
1809 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1810 return err;
9ab933ab
JF		 1811}
1812EXPORT_SYMBOL(dcb_setapp);
1813
a364c8cf
JF		 1814/**
1815 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1816 *
1817 * Helper routine which on success returns a non-zero 802.1Qaz user
1818 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1819 * not found in APP list.
1820 */
1821u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1822{
1823 struct dcb_app_type *itr;
1824 u8 prio = 0;
1825
1826 spin_lock(&dcb_lock);
716b31ab
TG		 1827 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1828 prio |= 1 << itr->app.priority;
a364c8cf
JF		 1829 spin_unlock(&dcb_lock);
1830
1831 return prio;
1832}
1833EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1834
b6db2174
JF		 1835/**
1836 * dcb_ieee_setapp - add IEEE dcb application data to app list
1837 *
1838 * This adds Application data to the list. Multiple application
1839 * entries may exists for the same selector and protocol as long
1840 * as the priorities are different.
1841 */
1842int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1843{
b6db2174
JF		 1844 struct dcb_app_type event;
1845 int err = 0;
1846
e290ed81 1847 event.ifindex = dev->ifindex;
b6db2174 1848 memcpy(&event.app, new, sizeof(event.app));
6bd0e1cb
JF		 1849 if (dev->dcbnl_ops->getdcbx)
1850 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
b6db2174
JF		 1851
1852 spin_lock(&dcb_lock);
1853 /* Search for existing match and abort if found */
716b31ab
TG		 1854 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1855 err = -EEXIST;
1856 goto out;
b6db2174
JF		 1857 }
1858
4e4f2f69 1859 err = dcb_app_add(new, dev->ifindex);
b6db2174
JF		 1860out:
1861 spin_unlock(&dcb_lock);
1862 if (!err)
1863 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1864 return err;
1865}
1866EXPORT_SYMBOL(dcb_ieee_setapp);
1867
f9ae7e4b
JF		 1868/**
1869 * dcb_ieee_delapp - delete IEEE dcb application data from list
1870 *
1871 * This removes a matching APP data from the APP list
1872 */
1873int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1874{
1875 struct dcb_app_type *itr;
1876 struct dcb_app_type event;
1877 int err = -ENOENT;
1878
e290ed81 1879 event.ifindex = dev->ifindex;
f9ae7e4b 1880 memcpy(&event.app, del, sizeof(event.app));
6bd0e1cb
JF		 1881 if (dev->dcbnl_ops->getdcbx)
1882 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
f9ae7e4b
JF		 1883
1884 spin_lock(&dcb_lock);
1885 /* Search for existing match and remove it. */
716b31ab
TG		 1886 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1887 list_del(&itr->list);
1888 kfree(itr);
1889 err = 0;
f9ae7e4b
JF		 1890 }
1891
f9ae7e4b
JF		 1892 spin_unlock(&dcb_lock);
1893 if (!err)
1894 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1895 return err;
1896}
1897EXPORT_SYMBOL(dcb_ieee_delapp);
1898
7c14c3f1 1899static void dcb_flushapp(void)
9ab933ab
JF		 1900{
1901 struct dcb_app_type *app;
2a8fe003 1902 struct dcb_app_type *tmp;
9ab933ab
JF		 1903
1904 spin_lock(&dcb_lock);
2a8fe003 1905 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
9ab933ab
JF		 1906 list_del(&app->list);
1907 kfree(app);
1908 }
1909 spin_unlock(&dcb_lock);
1910}
1911
2f90b865
AD		 1912static int __init dcbnl_init(void)
1913{
9ab933ab
JF		 1914 INIT_LIST_HEAD(&dcb_app_list);
1915
c7ac8679
GR		 1916 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1917 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
2f90b865
AD		 1918
1919 return 0;
1920}
1921module_init(dcbnl_init);
1922
1923static void __exit dcbnl_exit(void)
1924{
1925 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1926 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
9ab933ab 1927 dcb_flushapp();
2f90b865
AD		 1928}
1929module_exit(dcbnl_exit);
kernel source for telekom puls (alcatel/mediatek)