Commit | Line | Data |
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2f90b865 | 1 | /* |
698e1d23 | 2 | * Copyright (c) 2008-2011, Intel Corporation. |
2f90b865 AD |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Author: Lucy Liu <lucy.liu@intel.com> | |
18 | */ | |
19 | ||
20 | #include <linux/netdevice.h> | |
21 | #include <linux/netlink.h> | |
5a0e3ad6 | 22 | #include <linux/slab.h> |
2f90b865 AD |
23 | #include <net/netlink.h> |
24 | #include <net/rtnetlink.h> | |
25 | #include <linux/dcbnl.h> | |
96b99684 | 26 | #include <net/dcbevent.h> |
2f90b865 | 27 | #include <linux/rtnetlink.h> |
3a9a231d | 28 | #include <linux/module.h> |
2f90b865 AD |
29 | #include <net/sock.h> |
30 | ||
31 | /** | |
32 | * Data Center Bridging (DCB) is a collection of Ethernet enhancements | |
33 | * intended to allow network traffic with differing requirements | |
34 | * (highly reliable, no drops vs. best effort vs. low latency) to operate | |
35 | * and co-exist on Ethernet. Current DCB features are: | |
36 | * | |
37 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a | |
38 | * framework for assigning bandwidth guarantees to traffic classes. | |
39 | * | |
40 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which | |
41 | * can work independently for each 802.1p priority. | |
42 | * | |
43 | * Congestion Notification - provides a mechanism for end-to-end congestion | |
44 | * control for protocols which do not have built-in congestion management. | |
45 | * | |
46 | * More information about the emerging standards for these Ethernet features | |
47 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html | |
48 | * | |
49 | * This file implements an rtnetlink interface to allow configuration of DCB | |
50 | * features for capable devices. | |
51 | */ | |
52 | ||
53 | MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>"); | |
7a6b6f51 | 54 | MODULE_DESCRIPTION("Data Center Bridging netlink interface"); |
2f90b865 AD |
55 | MODULE_LICENSE("GPL"); |
56 | ||
57 | /**************** DCB attribute policies *************************************/ | |
58 | ||
59 | /* DCB netlink attributes policy */ | |
b54452b0 | 60 | static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { |
859ee3c4 AD |
61 | [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, |
62 | [DCB_ATTR_STATE] = {.type = NLA_U8}, | |
63 | [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, | |
64 | [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, | |
65 | [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, | |
2f90b865 | 66 | [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, |
859ee3c4 AD |
67 | [DCB_ATTR_CAP] = {.type = NLA_NESTED}, |
68 | [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, | |
69 | [DCB_ATTR_BCN] = {.type = NLA_NESTED}, | |
6fa382af | 70 | [DCB_ATTR_APP] = {.type = NLA_NESTED}, |
3e29027a | 71 | [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, |
6241b625 | 72 | [DCB_ATTR_DCBX] = {.type = NLA_U8}, |
ea45fe4e | 73 | [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, |
2f90b865 AD |
74 | }; |
75 | ||
76 | /* DCB priority flow control to User Priority nested attributes */ | |
b54452b0 | 77 | static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = { |
2f90b865 AD |
78 | [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, |
79 | [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, | |
80 | [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, | |
81 | [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, | |
82 | [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, | |
83 | [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, | |
84 | [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, | |
85 | [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, | |
86 | [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, | |
87 | }; | |
88 | ||
89 | /* DCB priority grouping nested attributes */ | |
b54452b0 | 90 | static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = { |
2f90b865 AD |
91 | [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, |
92 | [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, | |
93 | [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, | |
94 | [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, | |
95 | [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, | |
96 | [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, | |
97 | [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, | |
98 | [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, | |
99 | [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, | |
100 | [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, | |
101 | [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, | |
102 | [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, | |
103 | [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, | |
104 | [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, | |
105 | [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, | |
106 | [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, | |
107 | [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, | |
108 | [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, | |
109 | }; | |
110 | ||
111 | /* DCB traffic class nested attributes. */ | |
b54452b0 | 112 | static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = { |
2f90b865 AD |
113 | [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, |
114 | [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, | |
115 | [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, | |
116 | [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, | |
117 | [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, | |
118 | }; | |
119 | ||
46132188 | 120 | /* DCB capabilities nested attributes. */ |
b54452b0 | 121 | static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = { |
46132188 AD |
122 | [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, |
123 | [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, | |
124 | [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, | |
125 | [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, | |
126 | [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, | |
127 | [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, | |
128 | [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, | |
129 | [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, | |
6241b625 | 130 | [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, |
46132188 | 131 | }; |
2f90b865 | 132 | |
33dbabc4 | 133 | /* DCB capabilities nested attributes. */ |
b54452b0 | 134 | static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = { |
33dbabc4 AD |
135 | [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, |
136 | [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, | |
137 | [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, | |
138 | }; | |
139 | ||
859ee3c4 | 140 | /* DCB BCN nested attributes. */ |
b54452b0 | 141 | static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = { |
859ee3c4 AD |
142 | [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, |
143 | [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, | |
144 | [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, | |
145 | [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, | |
146 | [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, | |
147 | [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, | |
148 | [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, | |
149 | [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, | |
150 | [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, | |
f4314e81 DS |
151 | [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, |
152 | [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, | |
859ee3c4 AD |
153 | [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, |
154 | [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, | |
155 | [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, | |
156 | [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, | |
157 | [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, | |
158 | [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, | |
159 | [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, | |
160 | [DCB_BCN_ATTR_W] = {.type = NLA_U32}, | |
161 | [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, | |
162 | [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, | |
163 | [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, | |
164 | [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, | |
165 | [DCB_BCN_ATTR_C] = {.type = NLA_U32}, | |
166 | [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, | |
167 | }; | |
168 | ||
6fa382af | 169 | /* DCB APP nested attributes. */ |
b54452b0 | 170 | static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { |
6fa382af YZ |
171 | [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, |
172 | [DCB_APP_ATTR_ID] = {.type = NLA_U16}, | |
173 | [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, | |
174 | }; | |
175 | ||
3e29027a JF |
176 | /* IEEE 802.1Qaz nested attributes. */ |
177 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { | |
178 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, | |
179 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, | |
180 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, | |
08f10aff | 181 | [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)}, |
3e29027a JF |
182 | }; |
183 | ||
184 | static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = { | |
185 | [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)}, | |
186 | }; | |
187 | ||
ea45fe4e SR |
188 | /* DCB number of traffic classes nested attributes. */ |
189 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { | |
190 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, | |
191 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, | |
192 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, | |
193 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, | |
194 | }; | |
195 | ||
9ab933ab JF |
196 | static LIST_HEAD(dcb_app_list); |
197 | static DEFINE_SPINLOCK(dcb_lock); | |
198 | ||
33a03aad TG |
199 | static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq, |
200 | u32 flags, struct nlmsghdr **nlhp) | |
201 | { | |
202 | struct sk_buff *skb; | |
203 | struct dcbmsg *dcb; | |
204 | struct nlmsghdr *nlh; | |
205 | ||
206 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
207 | if (!skb) | |
208 | return NULL; | |
209 | ||
210 | nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags); | |
211 | if (!nlh) { | |
212 | /* header should always fit, allocation must be buggy */ | |
213 | BUG(); | |
214 | } | |
215 | ||
216 | dcb = nlmsg_data(nlh); | |
217 | dcb->dcb_family = AF_UNSPEC; | |
218 | dcb->cmd = cmd; | |
219 | dcb->dcb_pad = 0; | |
220 | ||
221 | if (nlhp) | |
222 | *nlhp = nlh; | |
223 | ||
224 | return skb; | |
225 | } | |
226 | ||
2f90b865 AD |
227 | /* standard netlink reply call */ |
228 | static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid, | |
229 | u32 seq, u16 flags) | |
230 | { | |
231 | struct sk_buff *dcbnl_skb; | |
232 | struct dcbmsg *dcb; | |
233 | struct nlmsghdr *nlh; | |
234 | int ret = -EINVAL; | |
235 | ||
236 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
237 | if (!dcbnl_skb) | |
238 | return ret; | |
239 | ||
240 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags); | |
241 | ||
242 | dcb = NLMSG_DATA(nlh); | |
243 | dcb->dcb_family = AF_UNSPEC; | |
244 | dcb->cmd = cmd; | |
245 | dcb->dcb_pad = 0; | |
246 | ||
247 | ret = nla_put_u8(dcbnl_skb, attr, value); | |
248 | if (ret) | |
249 | goto err; | |
250 | ||
251 | /* end the message, assign the nlmsg_len. */ | |
252 | nlmsg_end(dcbnl_skb, nlh); | |
253 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
254 | if (ret) | |
7eaf5077 | 255 | return -EINVAL; |
2f90b865 AD |
256 | |
257 | return 0; | |
258 | nlmsg_failure: | |
259 | err: | |
858eb711 | 260 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
261 | return ret; |
262 | } | |
263 | ||
264 | static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb, | |
265 | u32 pid, u32 seq, u16 flags) | |
266 | { | |
267 | int ret = -EINVAL; | |
268 | ||
269 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ | |
270 | if (!netdev->dcbnl_ops->getstate) | |
271 | return ret; | |
272 | ||
273 | ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB, | |
274 | DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags); | |
275 | ||
276 | return ret; | |
277 | } | |
278 | ||
279 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb, | |
280 | u32 pid, u32 seq, u16 flags) | |
281 | { | |
282 | struct sk_buff *dcbnl_skb; | |
283 | struct nlmsghdr *nlh; | |
284 | struct dcbmsg *dcb; | |
285 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; | |
286 | u8 value; | |
287 | int ret = -EINVAL; | |
288 | int i; | |
289 | int getall = 0; | |
290 | ||
291 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg) | |
292 | return ret; | |
293 | ||
294 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
295 | tb[DCB_ATTR_PFC_CFG], | |
296 | dcbnl_pfc_up_nest); | |
297 | if (ret) | |
298 | goto err_out; | |
299 | ||
300 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
301 | if (!dcbnl_skb) | |
302 | goto err_out; | |
303 | ||
304 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
305 | ||
306 | dcb = NLMSG_DATA(nlh); | |
307 | dcb->dcb_family = AF_UNSPEC; | |
308 | dcb->cmd = DCB_CMD_PFC_GCFG; | |
309 | ||
310 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG); | |
311 | if (!nest) | |
312 | goto err; | |
313 | ||
314 | if (data[DCB_PFC_UP_ATTR_ALL]) | |
315 | getall = 1; | |
316 | ||
317 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
318 | if (!getall && !data[i]) | |
319 | continue; | |
320 | ||
321 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, | |
322 | &value); | |
323 | ret = nla_put_u8(dcbnl_skb, i, value); | |
324 | ||
325 | if (ret) { | |
326 | nla_nest_cancel(dcbnl_skb, nest); | |
327 | goto err; | |
328 | } | |
329 | } | |
330 | nla_nest_end(dcbnl_skb, nest); | |
331 | ||
332 | nlmsg_end(dcbnl_skb, nlh); | |
333 | ||
334 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
335 | if (ret) | |
7eaf5077 | 336 | goto err_out; |
2f90b865 AD |
337 | |
338 | return 0; | |
339 | nlmsg_failure: | |
340 | err: | |
858eb711 | 341 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
342 | err_out: |
343 | return -EINVAL; | |
344 | } | |
345 | ||
346 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb, | |
347 | u32 pid, u32 seq, u16 flags) | |
348 | { | |
349 | struct sk_buff *dcbnl_skb; | |
350 | struct nlmsghdr *nlh; | |
351 | struct dcbmsg *dcb; | |
352 | u8 perm_addr[MAX_ADDR_LEN]; | |
353 | int ret = -EINVAL; | |
354 | ||
355 | if (!netdev->dcbnl_ops->getpermhwaddr) | |
356 | return ret; | |
357 | ||
358 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
359 | if (!dcbnl_skb) | |
360 | goto err_out; | |
361 | ||
362 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
363 | ||
364 | dcb = NLMSG_DATA(nlh); | |
365 | dcb->dcb_family = AF_UNSPEC; | |
366 | dcb->cmd = DCB_CMD_GPERM_HWADDR; | |
367 | ||
368 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); | |
369 | ||
370 | ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), | |
371 | perm_addr); | |
372 | ||
373 | nlmsg_end(dcbnl_skb, nlh); | |
374 | ||
375 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
376 | if (ret) | |
7eaf5077 | 377 | goto err_out; |
2f90b865 AD |
378 | |
379 | return 0; | |
380 | ||
381 | nlmsg_failure: | |
858eb711 | 382 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
383 | err_out: |
384 | return -EINVAL; | |
385 | } | |
386 | ||
46132188 AD |
387 | static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb, |
388 | u32 pid, u32 seq, u16 flags) | |
389 | { | |
390 | struct sk_buff *dcbnl_skb; | |
391 | struct nlmsghdr *nlh; | |
392 | struct dcbmsg *dcb; | |
393 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; | |
394 | u8 value; | |
395 | int ret = -EINVAL; | |
396 | int i; | |
397 | int getall = 0; | |
398 | ||
399 | if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap) | |
400 | return ret; | |
401 | ||
402 | ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], | |
403 | dcbnl_cap_nest); | |
404 | if (ret) | |
405 | goto err_out; | |
406 | ||
407 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
408 | if (!dcbnl_skb) | |
409 | goto err_out; | |
410 | ||
411 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
412 | ||
413 | dcb = NLMSG_DATA(nlh); | |
414 | dcb->dcb_family = AF_UNSPEC; | |
415 | dcb->cmd = DCB_CMD_GCAP; | |
416 | ||
417 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP); | |
418 | if (!nest) | |
419 | goto err; | |
420 | ||
421 | if (data[DCB_CAP_ATTR_ALL]) | |
422 | getall = 1; | |
423 | ||
424 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { | |
425 | if (!getall && !data[i]) | |
426 | continue; | |
427 | ||
428 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { | |
429 | ret = nla_put_u8(dcbnl_skb, i, value); | |
430 | ||
431 | if (ret) { | |
432 | nla_nest_cancel(dcbnl_skb, nest); | |
433 | goto err; | |
434 | } | |
435 | } | |
436 | } | |
437 | nla_nest_end(dcbnl_skb, nest); | |
438 | ||
439 | nlmsg_end(dcbnl_skb, nlh); | |
440 | ||
441 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
442 | if (ret) | |
7eaf5077 | 443 | goto err_out; |
46132188 AD |
444 | |
445 | return 0; | |
446 | nlmsg_failure: | |
447 | err: | |
858eb711 | 448 | kfree_skb(dcbnl_skb); |
46132188 AD |
449 | err_out: |
450 | return -EINVAL; | |
451 | } | |
452 | ||
33dbabc4 AD |
453 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb, |
454 | u32 pid, u32 seq, u16 flags) | |
455 | { | |
456 | struct sk_buff *dcbnl_skb; | |
457 | struct nlmsghdr *nlh; | |
458 | struct dcbmsg *dcb; | |
459 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; | |
460 | u8 value; | |
461 | int ret = -EINVAL; | |
462 | int i; | |
463 | int getall = 0; | |
464 | ||
465 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs) | |
466 | return ret; | |
467 | ||
468 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
469 | dcbnl_numtcs_nest); | |
470 | if (ret) { | |
471 | ret = -EINVAL; | |
472 | goto err_out; | |
473 | } | |
474 | ||
475 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
476 | if (!dcbnl_skb) { | |
477 | ret = -EINVAL; | |
478 | goto err_out; | |
479 | } | |
480 | ||
481 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
482 | ||
483 | dcb = NLMSG_DATA(nlh); | |
484 | dcb->dcb_family = AF_UNSPEC; | |
485 | dcb->cmd = DCB_CMD_GNUMTCS; | |
486 | ||
487 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS); | |
488 | if (!nest) { | |
489 | ret = -EINVAL; | |
490 | goto err; | |
491 | } | |
492 | ||
493 | if (data[DCB_NUMTCS_ATTR_ALL]) | |
494 | getall = 1; | |
495 | ||
496 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
497 | if (!getall && !data[i]) | |
498 | continue; | |
499 | ||
500 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); | |
501 | if (!ret) { | |
502 | ret = nla_put_u8(dcbnl_skb, i, value); | |
503 | ||
504 | if (ret) { | |
505 | nla_nest_cancel(dcbnl_skb, nest); | |
506 | ret = -EINVAL; | |
507 | goto err; | |
508 | } | |
509 | } else { | |
510 | goto err; | |
511 | } | |
512 | } | |
513 | nla_nest_end(dcbnl_skb, nest); | |
514 | ||
515 | nlmsg_end(dcbnl_skb, nlh); | |
516 | ||
517 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
518 | if (ret) { | |
519 | ret = -EINVAL; | |
7eaf5077 | 520 | goto err_out; |
33dbabc4 AD |
521 | } |
522 | ||
523 | return 0; | |
524 | nlmsg_failure: | |
525 | err: | |
858eb711 | 526 | kfree_skb(dcbnl_skb); |
33dbabc4 AD |
527 | err_out: |
528 | return ret; | |
529 | } | |
530 | ||
531 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb, | |
532 | u32 pid, u32 seq, u16 flags) | |
533 | { | |
534 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; | |
535 | int ret = -EINVAL; | |
536 | u8 value; | |
537 | int i; | |
538 | ||
8b124a8e | 539 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs) |
33dbabc4 AD |
540 | return ret; |
541 | ||
542 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
543 | dcbnl_numtcs_nest); | |
544 | ||
545 | if (ret) { | |
546 | ret = -EINVAL; | |
547 | goto err; | |
548 | } | |
549 | ||
550 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
551 | if (data[i] == NULL) | |
552 | continue; | |
553 | ||
554 | value = nla_get_u8(data[i]); | |
555 | ||
556 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); | |
557 | ||
558 | if (ret) | |
559 | goto operr; | |
560 | } | |
561 | ||
562 | operr: | |
563 | ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS, | |
564 | DCB_ATTR_NUMTCS, pid, seq, flags); | |
565 | ||
566 | err: | |
567 | return ret; | |
568 | } | |
569 | ||
0eb3aa9b AD |
570 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb, |
571 | u32 pid, u32 seq, u16 flags) | |
572 | { | |
573 | int ret = -EINVAL; | |
574 | ||
575 | if (!netdev->dcbnl_ops->getpfcstate) | |
576 | return ret; | |
577 | ||
578 | ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB, | |
579 | DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE, | |
580 | pid, seq, flags); | |
581 | ||
582 | return ret; | |
583 | } | |
584 | ||
585 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb, | |
586 | u32 pid, u32 seq, u16 flags) | |
587 | { | |
588 | int ret = -EINVAL; | |
589 | u8 value; | |
590 | ||
591 | if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate) | |
592 | return ret; | |
593 | ||
594 | value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); | |
595 | ||
596 | netdev->dcbnl_ops->setpfcstate(netdev, value); | |
597 | ||
598 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE, | |
599 | pid, seq, flags); | |
600 | ||
601 | return ret; | |
602 | } | |
603 | ||
57949686 YZ |
604 | static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb, |
605 | u32 pid, u32 seq, u16 flags) | |
606 | { | |
607 | struct sk_buff *dcbnl_skb; | |
608 | struct nlmsghdr *nlh; | |
609 | struct dcbmsg *dcb; | |
610 | struct nlattr *app_nest; | |
611 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
612 | u16 id; | |
613 | u8 up, idtype; | |
614 | int ret = -EINVAL; | |
615 | ||
3dce38a0 | 616 | if (!tb[DCB_ATTR_APP]) |
57949686 YZ |
617 | goto out; |
618 | ||
619 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
620 | dcbnl_app_nest); | |
621 | if (ret) | |
622 | goto out; | |
623 | ||
624 | ret = -EINVAL; | |
625 | /* all must be non-null */ | |
626 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
627 | (!app_tb[DCB_APP_ATTR_ID])) | |
628 | goto out; | |
629 | ||
630 | /* either by eth type or by socket number */ | |
631 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
632 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
633 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
634 | goto out; | |
635 | ||
636 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
3dce38a0 JF |
637 | |
638 | if (netdev->dcbnl_ops->getapp) { | |
639 | up = netdev->dcbnl_ops->getapp(netdev, idtype, id); | |
640 | } else { | |
641 | struct dcb_app app = { | |
642 | .selector = idtype, | |
643 | .protocol = id, | |
644 | }; | |
645 | up = dcb_getapp(netdev, &app); | |
646 | } | |
57949686 YZ |
647 | |
648 | /* send this back */ | |
649 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
650 | if (!dcbnl_skb) | |
651 | goto out; | |
652 | ||
653 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
654 | dcb = NLMSG_DATA(nlh); | |
655 | dcb->dcb_family = AF_UNSPEC; | |
656 | dcb->cmd = DCB_CMD_GAPP; | |
657 | ||
658 | app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP); | |
d3337de5 JJ |
659 | if (!app_nest) |
660 | goto out_cancel; | |
661 | ||
57949686 YZ |
662 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype); |
663 | if (ret) | |
664 | goto out_cancel; | |
665 | ||
666 | ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id); | |
667 | if (ret) | |
668 | goto out_cancel; | |
669 | ||
670 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up); | |
671 | if (ret) | |
672 | goto out_cancel; | |
673 | ||
674 | nla_nest_end(dcbnl_skb, app_nest); | |
675 | nlmsg_end(dcbnl_skb, nlh); | |
676 | ||
677 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
678 | if (ret) | |
679 | goto nlmsg_failure; | |
680 | ||
681 | goto out; | |
682 | ||
683 | out_cancel: | |
684 | nla_nest_cancel(dcbnl_skb, app_nest); | |
685 | nlmsg_failure: | |
686 | kfree_skb(dcbnl_skb); | |
687 | out: | |
688 | return ret; | |
689 | } | |
690 | ||
691 | static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb, | |
692 | u32 pid, u32 seq, u16 flags) | |
693 | { | |
9ab933ab | 694 | int err, ret = -EINVAL; |
57949686 YZ |
695 | u16 id; |
696 | u8 up, idtype; | |
697 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
698 | ||
9ab933ab | 699 | if (!tb[DCB_ATTR_APP]) |
57949686 YZ |
700 | goto out; |
701 | ||
702 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
703 | dcbnl_app_nest); | |
704 | if (ret) | |
705 | goto out; | |
706 | ||
707 | ret = -EINVAL; | |
708 | /* all must be non-null */ | |
709 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
710 | (!app_tb[DCB_APP_ATTR_ID]) || | |
711 | (!app_tb[DCB_APP_ATTR_PRIORITY])) | |
712 | goto out; | |
713 | ||
714 | /* either by eth type or by socket number */ | |
715 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
716 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
717 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
718 | goto out; | |
719 | ||
720 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
721 | up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); | |
722 | ||
9ab933ab JF |
723 | if (netdev->dcbnl_ops->setapp) { |
724 | err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); | |
725 | } else { | |
726 | struct dcb_app app; | |
727 | app.selector = idtype; | |
728 | app.protocol = id; | |
729 | app.priority = up; | |
730 | err = dcb_setapp(netdev, &app); | |
731 | } | |
732 | ||
733 | ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP, | |
734 | pid, seq, flags); | |
08157984 | 735 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0); |
57949686 YZ |
736 | out: |
737 | return ret; | |
738 | } | |
739 | ||
2f90b865 AD |
740 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb, |
741 | u32 pid, u32 seq, u16 flags, int dir) | |
742 | { | |
743 | struct sk_buff *dcbnl_skb; | |
744 | struct nlmsghdr *nlh; | |
745 | struct dcbmsg *dcb; | |
746 | struct nlattr *pg_nest, *param_nest, *data; | |
747 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
748 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
749 | u8 prio, pgid, tc_pct, up_map; | |
750 | int ret = -EINVAL; | |
751 | int getall = 0; | |
752 | int i; | |
753 | ||
754 | if (!tb[DCB_ATTR_PG_CFG] || | |
755 | !netdev->dcbnl_ops->getpgtccfgtx || | |
756 | !netdev->dcbnl_ops->getpgtccfgrx || | |
757 | !netdev->dcbnl_ops->getpgbwgcfgtx || | |
758 | !netdev->dcbnl_ops->getpgbwgcfgrx) | |
759 | return ret; | |
760 | ||
761 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, | |
762 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); | |
763 | ||
764 | if (ret) | |
765 | goto err_out; | |
766 | ||
767 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
768 | if (!dcbnl_skb) | |
769 | goto err_out; | |
770 | ||
771 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
772 | ||
773 | dcb = NLMSG_DATA(nlh); | |
774 | dcb->dcb_family = AF_UNSPEC; | |
775 | dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG; | |
776 | ||
777 | pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG); | |
778 | if (!pg_nest) | |
779 | goto err; | |
780 | ||
781 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
782 | getall = 1; | |
783 | ||
784 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
785 | if (!getall && !pg_tb[i]) | |
786 | continue; | |
787 | ||
788 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
789 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; | |
790 | else | |
791 | data = pg_tb[i]; | |
792 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, | |
793 | data, dcbnl_tc_param_nest); | |
794 | if (ret) | |
795 | goto err_pg; | |
796 | ||
797 | param_nest = nla_nest_start(dcbnl_skb, i); | |
798 | if (!param_nest) | |
799 | goto err_pg; | |
800 | ||
801 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
802 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
803 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
804 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
805 | ||
806 | if (dir) { | |
807 | /* Rx */ | |
808 | netdev->dcbnl_ops->getpgtccfgrx(netdev, | |
809 | i - DCB_PG_ATTR_TC_0, &prio, | |
810 | &pgid, &tc_pct, &up_map); | |
811 | } else { | |
812 | /* Tx */ | |
813 | netdev->dcbnl_ops->getpgtccfgtx(netdev, | |
814 | i - DCB_PG_ATTR_TC_0, &prio, | |
815 | &pgid, &tc_pct, &up_map); | |
816 | } | |
817 | ||
818 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || | |
819 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
820 | ret = nla_put_u8(dcbnl_skb, | |
821 | DCB_TC_ATTR_PARAM_PGID, pgid); | |
822 | if (ret) | |
823 | goto err_param; | |
824 | } | |
825 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || | |
826 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
827 | ret = nla_put_u8(dcbnl_skb, | |
828 | DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); | |
829 | if (ret) | |
830 | goto err_param; | |
831 | } | |
832 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || | |
833 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
834 | ret = nla_put_u8(dcbnl_skb, | |
835 | DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); | |
836 | if (ret) | |
837 | goto err_param; | |
838 | } | |
839 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || | |
840 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
841 | ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT, | |
842 | tc_pct); | |
843 | if (ret) | |
844 | goto err_param; | |
845 | } | |
846 | nla_nest_end(dcbnl_skb, param_nest); | |
847 | } | |
848 | ||
849 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) | |
850 | getall = 1; | |
851 | else | |
852 | getall = 0; | |
853 | ||
854 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
855 | if (!getall && !pg_tb[i]) | |
856 | continue; | |
857 | ||
858 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
859 | ||
860 | if (dir) { | |
861 | /* Rx */ | |
862 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, | |
863 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
864 | } else { | |
865 | /* Tx */ | |
866 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, | |
867 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
868 | } | |
869 | ret = nla_put_u8(dcbnl_skb, i, tc_pct); | |
870 | ||
871 | if (ret) | |
872 | goto err_pg; | |
873 | } | |
874 | ||
875 | nla_nest_end(dcbnl_skb, pg_nest); | |
876 | ||
877 | nlmsg_end(dcbnl_skb, nlh); | |
878 | ||
879 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
880 | if (ret) | |
7eaf5077 | 881 | goto err_out; |
2f90b865 AD |
882 | |
883 | return 0; | |
884 | ||
885 | err_param: | |
886 | nla_nest_cancel(dcbnl_skb, param_nest); | |
887 | err_pg: | |
888 | nla_nest_cancel(dcbnl_skb, pg_nest); | |
889 | nlmsg_failure: | |
890 | err: | |
858eb711 | 891 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
892 | err_out: |
893 | ret = -EINVAL; | |
894 | return ret; | |
895 | } | |
896 | ||
897 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb, | |
898 | u32 pid, u32 seq, u16 flags) | |
899 | { | |
900 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0); | |
901 | } | |
902 | ||
903 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb, | |
904 | u32 pid, u32 seq, u16 flags) | |
905 | { | |
906 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1); | |
907 | } | |
908 | ||
909 | static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb, | |
910 | u32 pid, u32 seq, u16 flags) | |
911 | { | |
912 | int ret = -EINVAL; | |
913 | u8 value; | |
914 | ||
915 | if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate) | |
916 | return ret; | |
917 | ||
918 | value = nla_get_u8(tb[DCB_ATTR_STATE]); | |
919 | ||
1486a61e DS |
920 | ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value), |
921 | RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE, | |
2f90b865 AD |
922 | pid, seq, flags); |
923 | ||
924 | return ret; | |
925 | } | |
926 | ||
927 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb, | |
928 | u32 pid, u32 seq, u16 flags) | |
929 | { | |
930 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; | |
931 | int i; | |
932 | int ret = -EINVAL; | |
933 | u8 value; | |
934 | ||
935 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg) | |
936 | return ret; | |
937 | ||
938 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
939 | tb[DCB_ATTR_PFC_CFG], | |
940 | dcbnl_pfc_up_nest); | |
941 | if (ret) | |
942 | goto err; | |
943 | ||
944 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
945 | if (data[i] == NULL) | |
946 | continue; | |
947 | value = nla_get_u8(data[i]); | |
948 | netdev->dcbnl_ops->setpfccfg(netdev, | |
949 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); | |
950 | } | |
951 | ||
952 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG, | |
953 | pid, seq, flags); | |
954 | err: | |
955 | return ret; | |
956 | } | |
957 | ||
958 | static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb, | |
959 | u32 pid, u32 seq, u16 flags) | |
960 | { | |
961 | int ret = -EINVAL; | |
962 | ||
963 | if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall) | |
964 | return ret; | |
965 | ||
966 | ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB, | |
967 | DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags); | |
08157984 | 968 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0); |
2f90b865 AD |
969 | |
970 | return ret; | |
971 | } | |
972 | ||
973 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb, | |
974 | u32 pid, u32 seq, u16 flags, int dir) | |
975 | { | |
976 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
977 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
978 | int ret = -EINVAL; | |
979 | int i; | |
980 | u8 pgid; | |
981 | u8 up_map; | |
982 | u8 prio; | |
983 | u8 tc_pct; | |
984 | ||
985 | if (!tb[DCB_ATTR_PG_CFG] || | |
986 | !netdev->dcbnl_ops->setpgtccfgtx || | |
987 | !netdev->dcbnl_ops->setpgtccfgrx || | |
988 | !netdev->dcbnl_ops->setpgbwgcfgtx || | |
989 | !netdev->dcbnl_ops->setpgbwgcfgrx) | |
990 | return ret; | |
991 | ||
992 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, | |
993 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); | |
994 | if (ret) | |
995 | goto err; | |
996 | ||
997 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
998 | if (!pg_tb[i]) | |
999 | continue; | |
1000 | ||
1001 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, | |
1002 | pg_tb[i], dcbnl_tc_param_nest); | |
1003 | if (ret) | |
1004 | goto err; | |
1005 | ||
1006 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
1007 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
1008 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
1009 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
1010 | ||
1011 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) | |
1012 | prio = | |
1013 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); | |
1014 | ||
1015 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) | |
1016 | pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); | |
1017 | ||
1018 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) | |
1019 | tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); | |
1020 | ||
1021 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) | |
1022 | up_map = | |
1023 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); | |
1024 | ||
1025 | /* dir: Tx = 0, Rx = 1 */ | |
1026 | if (dir) { | |
1027 | /* Rx */ | |
1028 | netdev->dcbnl_ops->setpgtccfgrx(netdev, | |
1029 | i - DCB_PG_ATTR_TC_0, | |
1030 | prio, pgid, tc_pct, up_map); | |
1031 | } else { | |
1032 | /* Tx */ | |
1033 | netdev->dcbnl_ops->setpgtccfgtx(netdev, | |
1034 | i - DCB_PG_ATTR_TC_0, | |
1035 | prio, pgid, tc_pct, up_map); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
1040 | if (!pg_tb[i]) | |
1041 | continue; | |
1042 | ||
1043 | tc_pct = nla_get_u8(pg_tb[i]); | |
1044 | ||
1045 | /* dir: Tx = 0, Rx = 1 */ | |
1046 | if (dir) { | |
1047 | /* Rx */ | |
1048 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, | |
1049 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
1050 | } else { | |
1051 | /* Tx */ | |
1052 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, | |
1053 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | ret = dcbnl_reply(0, RTM_SETDCB, | |
1058 | (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), | |
1059 | DCB_ATTR_PG_CFG, pid, seq, flags); | |
1060 | ||
1061 | err: | |
1062 | return ret; | |
1063 | } | |
1064 | ||
1065 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1066 | u32 pid, u32 seq, u16 flags) | |
1067 | { | |
1068 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0); | |
1069 | } | |
1070 | ||
1071 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1072 | u32 pid, u32 seq, u16 flags) | |
1073 | { | |
1074 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1); | |
1075 | } | |
1076 | ||
859ee3c4 AD |
1077 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb, |
1078 | u32 pid, u32 seq, u16 flags) | |
1079 | { | |
1080 | struct sk_buff *dcbnl_skb; | |
1081 | struct nlmsghdr *nlh; | |
1082 | struct dcbmsg *dcb; | |
1083 | struct nlattr *bcn_nest; | |
1084 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; | |
1085 | u8 value_byte; | |
1086 | u32 value_integer; | |
1087 | int ret = -EINVAL; | |
1088 | bool getall = false; | |
1089 | int i; | |
1090 | ||
1091 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp || | |
1092 | !netdev->dcbnl_ops->getbcncfg) | |
1093 | return ret; | |
1094 | ||
1095 | ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX, | |
1096 | tb[DCB_ATTR_BCN], dcbnl_bcn_nest); | |
1097 | ||
1098 | if (ret) | |
1099 | goto err_out; | |
1100 | ||
1101 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1102 | if (!dcbnl_skb) | |
1103 | goto err_out; | |
1104 | ||
1105 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1106 | ||
1107 | dcb = NLMSG_DATA(nlh); | |
1108 | dcb->dcb_family = AF_UNSPEC; | |
1109 | dcb->cmd = DCB_CMD_BCN_GCFG; | |
1110 | ||
1111 | bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN); | |
1112 | if (!bcn_nest) | |
1113 | goto err; | |
1114 | ||
1115 | if (bcn_tb[DCB_BCN_ATTR_ALL]) | |
1116 | getall = true; | |
1117 | ||
1118 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
1119 | if (!getall && !bcn_tb[i]) | |
1120 | continue; | |
1121 | ||
1122 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, | |
1123 | &value_byte); | |
1124 | ret = nla_put_u8(dcbnl_skb, i, value_byte); | |
1125 | if (ret) | |
1126 | goto err_bcn; | |
1127 | } | |
1128 | ||
f4314e81 | 1129 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
1130 | if (!getall && !bcn_tb[i]) |
1131 | continue; | |
1132 | ||
1133 | netdev->dcbnl_ops->getbcncfg(netdev, i, | |
1134 | &value_integer); | |
1135 | ret = nla_put_u32(dcbnl_skb, i, value_integer); | |
1136 | if (ret) | |
1137 | goto err_bcn; | |
1138 | } | |
1139 | ||
1140 | nla_nest_end(dcbnl_skb, bcn_nest); | |
1141 | ||
1142 | nlmsg_end(dcbnl_skb, nlh); | |
1143 | ||
1144 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
1145 | if (ret) | |
7eaf5077 | 1146 | goto err_out; |
859ee3c4 AD |
1147 | |
1148 | return 0; | |
1149 | ||
1150 | err_bcn: | |
1151 | nla_nest_cancel(dcbnl_skb, bcn_nest); | |
1152 | nlmsg_failure: | |
1153 | err: | |
858eb711 | 1154 | kfree_skb(dcbnl_skb); |
859ee3c4 AD |
1155 | err_out: |
1156 | ret = -EINVAL; | |
1157 | return ret; | |
1158 | } | |
1159 | ||
1160 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1161 | u32 pid, u32 seq, u16 flags) | |
1162 | { | |
1163 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; | |
1164 | int i; | |
1165 | int ret = -EINVAL; | |
1166 | u8 value_byte; | |
1167 | u32 value_int; | |
1168 | ||
f64f9e71 JP |
1169 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg || |
1170 | !netdev->dcbnl_ops->setbcnrp) | |
859ee3c4 AD |
1171 | return ret; |
1172 | ||
1173 | ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX, | |
1174 | tb[DCB_ATTR_BCN], | |
1175 | dcbnl_pfc_up_nest); | |
1176 | if (ret) | |
1177 | goto err; | |
1178 | ||
1179 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
1180 | if (data[i] == NULL) | |
1181 | continue; | |
1182 | value_byte = nla_get_u8(data[i]); | |
1183 | netdev->dcbnl_ops->setbcnrp(netdev, | |
1184 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); | |
1185 | } | |
1186 | ||
f4314e81 | 1187 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
1188 | if (data[i] == NULL) |
1189 | continue; | |
1190 | value_int = nla_get_u32(data[i]); | |
1191 | netdev->dcbnl_ops->setbcncfg(netdev, | |
1192 | i, value_int); | |
1193 | } | |
1194 | ||
1195 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN, | |
1196 | pid, seq, flags); | |
1197 | err: | |
1198 | return ret; | |
1199 | } | |
1200 | ||
dc6ed1df SR |
1201 | static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, |
1202 | int app_nested_type, int app_info_type, | |
1203 | int app_entry_type) | |
eed84713 SR |
1204 | { |
1205 | struct dcb_peer_app_info info; | |
1206 | struct dcb_app *table = NULL; | |
1207 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1208 | u16 app_count; | |
1209 | int err; | |
1210 | ||
1211 | ||
1212 | /** | |
1213 | * retrieve the peer app configuration form the driver. If the driver | |
1214 | * handlers fail exit without doing anything | |
1215 | */ | |
1216 | err = ops->peer_getappinfo(netdev, &info, &app_count); | |
1217 | if (!err && app_count) { | |
1218 | table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL); | |
1219 | if (!table) | |
1220 | return -ENOMEM; | |
1221 | ||
1222 | err = ops->peer_getapptable(netdev, table); | |
1223 | } | |
1224 | ||
1225 | if (!err) { | |
1226 | u16 i; | |
1227 | struct nlattr *app; | |
1228 | ||
1229 | /** | |
1230 | * build the message, from here on the only possible failure | |
1231 | * is due to the skb size | |
1232 | */ | |
1233 | err = -EMSGSIZE; | |
1234 | ||
dc6ed1df | 1235 | app = nla_nest_start(skb, app_nested_type); |
eed84713 SR |
1236 | if (!app) |
1237 | goto nla_put_failure; | |
1238 | ||
1eb4c977 DM |
1239 | if (app_info_type && |
1240 | nla_put(skb, app_info_type, sizeof(info), &info)) | |
1241 | goto nla_put_failure; | |
eed84713 | 1242 | |
1eb4c977 DM |
1243 | for (i = 0; i < app_count; i++) { |
1244 | if (nla_put(skb, app_entry_type, sizeof(struct dcb_app), | |
1245 | &table[i])) | |
1246 | goto nla_put_failure; | |
1247 | } | |
eed84713 SR |
1248 | nla_nest_end(skb, app); |
1249 | } | |
1250 | err = 0; | |
1251 | ||
1252 | nla_put_failure: | |
1253 | kfree(table); | |
1254 | return err; | |
1255 | } | |
3e29027a JF |
1256 | |
1257 | /* Handle IEEE 802.1Qaz GET commands. */ | |
314b4778 | 1258 | static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) |
3e29027a | 1259 | { |
9ab933ab JF |
1260 | struct nlattr *ieee, *app; |
1261 | struct dcb_app_type *itr; | |
3e29027a | 1262 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
c7797baf | 1263 | int dcbx; |
314b4778 | 1264 | int err = -EMSGSIZE; |
3e29027a | 1265 | |
1eb4c977 DM |
1266 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
1267 | goto nla_put_failure; | |
3e29027a JF |
1268 | ieee = nla_nest_start(skb, DCB_ATTR_IEEE); |
1269 | if (!ieee) | |
1270 | goto nla_put_failure; | |
1271 | ||
1272 | if (ops->ieee_getets) { | |
1273 | struct ieee_ets ets; | |
1274 | err = ops->ieee_getets(netdev, &ets); | |
1eb4c977 DM |
1275 | if (!err && |
1276 | nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets)) | |
1277 | goto nla_put_failure; | |
3e29027a JF |
1278 | } |
1279 | ||
08f10aff AV |
1280 | if (ops->ieee_getmaxrate) { |
1281 | struct ieee_maxrate maxrate; | |
1282 | err = ops->ieee_getmaxrate(netdev, &maxrate); | |
1283 | if (!err) { | |
1284 | err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE, | |
1285 | sizeof(maxrate), &maxrate); | |
1286 | if (err) | |
1287 | goto nla_put_failure; | |
1288 | } | |
1289 | } | |
1290 | ||
3e29027a JF |
1291 | if (ops->ieee_getpfc) { |
1292 | struct ieee_pfc pfc; | |
1293 | err = ops->ieee_getpfc(netdev, &pfc); | |
1eb4c977 DM |
1294 | if (!err && |
1295 | nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc)) | |
1296 | goto nla_put_failure; | |
3e29027a JF |
1297 | } |
1298 | ||
9ab933ab JF |
1299 | app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE); |
1300 | if (!app) | |
1301 | goto nla_put_failure; | |
1302 | ||
1303 | spin_lock(&dcb_lock); | |
1304 | list_for_each_entry(itr, &dcb_app_list, list) { | |
e290ed81 | 1305 | if (itr->ifindex == netdev->ifindex) { |
70bfa2d2 DC |
1306 | err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app), |
1307 | &itr->app); | |
1308 | if (err) { | |
1309 | spin_unlock(&dcb_lock); | |
1310 | goto nla_put_failure; | |
1311 | } | |
1312 | } | |
9ab933ab | 1313 | } |
c7797baf JF |
1314 | |
1315 | if (netdev->dcbnl_ops->getdcbx) | |
1316 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
1317 | else | |
1318 | dcbx = -EOPNOTSUPP; | |
1319 | ||
9ab933ab JF |
1320 | spin_unlock(&dcb_lock); |
1321 | nla_nest_end(skb, app); | |
1322 | ||
eed84713 SR |
1323 | /* get peer info if available */ |
1324 | if (ops->ieee_peer_getets) { | |
1325 | struct ieee_ets ets; | |
1326 | err = ops->ieee_peer_getets(netdev, &ets); | |
1eb4c977 DM |
1327 | if (!err && |
1328 | nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets)) | |
1329 | goto nla_put_failure; | |
eed84713 SR |
1330 | } |
1331 | ||
1332 | if (ops->ieee_peer_getpfc) { | |
1333 | struct ieee_pfc pfc; | |
1334 | err = ops->ieee_peer_getpfc(netdev, &pfc); | |
1eb4c977 DM |
1335 | if (!err && |
1336 | nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc)) | |
1337 | goto nla_put_failure; | |
eed84713 SR |
1338 | } |
1339 | ||
1340 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
dc6ed1df SR |
1341 | err = dcbnl_build_peer_app(netdev, skb, |
1342 | DCB_ATTR_IEEE_PEER_APP, | |
1343 | DCB_ATTR_IEEE_APP_UNSPEC, | |
1344 | DCB_ATTR_IEEE_APP); | |
eed84713 SR |
1345 | if (err) |
1346 | goto nla_put_failure; | |
1347 | } | |
1348 | ||
3e29027a | 1349 | nla_nest_end(skb, ieee); |
c7797baf JF |
1350 | if (dcbx >= 0) { |
1351 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); | |
1352 | if (err) | |
1353 | goto nla_put_failure; | |
1354 | } | |
3e29027a | 1355 | |
314b4778 JF |
1356 | return 0; |
1357 | ||
3e29027a | 1358 | nla_put_failure: |
314b4778 | 1359 | return err; |
3e29027a JF |
1360 | } |
1361 | ||
5b7f7626 SR |
1362 | static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, |
1363 | int dir) | |
1364 | { | |
1365 | u8 pgid, up_map, prio, tc_pct; | |
1366 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; | |
1367 | int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; | |
1368 | struct nlattr *pg = nla_nest_start(skb, i); | |
1369 | ||
1370 | if (!pg) | |
1371 | goto nla_put_failure; | |
1372 | ||
1373 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
1374 | struct nlattr *tc_nest = nla_nest_start(skb, i); | |
1375 | ||
1376 | if (!tc_nest) | |
1377 | goto nla_put_failure; | |
1378 | ||
1379 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
1380 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
1381 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
1382 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
1383 | ||
1384 | if (!dir) | |
1385 | ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, | |
1386 | &prio, &pgid, &tc_pct, &up_map); | |
1387 | else | |
1388 | ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, | |
1389 | &prio, &pgid, &tc_pct, &up_map); | |
1390 | ||
1eb4c977 DM |
1391 | if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) || |
1392 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) || | |
1393 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) || | |
1394 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct)) | |
1395 | goto nla_put_failure; | |
5b7f7626 SR |
1396 | nla_nest_end(skb, tc_nest); |
1397 | } | |
1398 | ||
1399 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
1400 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
1401 | ||
1402 | if (!dir) | |
1403 | ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, | |
1404 | &tc_pct); | |
1405 | else | |
1406 | ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, | |
1407 | &tc_pct); | |
1eb4c977 DM |
1408 | if (nla_put_u8(skb, i, tc_pct)) |
1409 | goto nla_put_failure; | |
5b7f7626 SR |
1410 | } |
1411 | nla_nest_end(skb, pg); | |
1412 | return 0; | |
1413 | ||
1414 | nla_put_failure: | |
1415 | return -EMSGSIZE; | |
1416 | } | |
1417 | ||
1418 | static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) | |
1419 | { | |
1420 | struct nlattr *cee, *app; | |
1421 | struct dcb_app_type *itr; | |
1422 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1423 | int dcbx, i, err = -EMSGSIZE; | |
1424 | u8 value; | |
1425 | ||
1eb4c977 DM |
1426 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
1427 | goto nla_put_failure; | |
5b7f7626 SR |
1428 | cee = nla_nest_start(skb, DCB_ATTR_CEE); |
1429 | if (!cee) | |
1430 | goto nla_put_failure; | |
1431 | ||
1432 | /* local pg */ | |
1433 | if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { | |
1434 | err = dcbnl_cee_pg_fill(skb, netdev, 1); | |
1435 | if (err) | |
1436 | goto nla_put_failure; | |
1437 | } | |
1438 | ||
1439 | if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { | |
1440 | err = dcbnl_cee_pg_fill(skb, netdev, 0); | |
1441 | if (err) | |
1442 | goto nla_put_failure; | |
1443 | } | |
1444 | ||
1445 | /* local pfc */ | |
1446 | if (ops->getpfccfg) { | |
1447 | struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC); | |
1448 | ||
1449 | if (!pfc_nest) | |
1450 | goto nla_put_failure; | |
1451 | ||
1452 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
1453 | ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); | |
1eb4c977 DM |
1454 | if (nla_put_u8(skb, i, value)) |
1455 | goto nla_put_failure; | |
5b7f7626 SR |
1456 | } |
1457 | nla_nest_end(skb, pfc_nest); | |
1458 | } | |
1459 | ||
1460 | /* local app */ | |
1461 | spin_lock(&dcb_lock); | |
1462 | app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE); | |
1463 | if (!app) | |
40f5d72a | 1464 | goto dcb_unlock; |
5b7f7626 SR |
1465 | |
1466 | list_for_each_entry(itr, &dcb_app_list, list) { | |
e290ed81 | 1467 | if (itr->ifindex == netdev->ifindex) { |
5b7f7626 SR |
1468 | struct nlattr *app_nest = nla_nest_start(skb, |
1469 | DCB_ATTR_APP); | |
1470 | if (!app_nest) | |
1471 | goto dcb_unlock; | |
1472 | ||
1473 | err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, | |
1474 | itr->app.selector); | |
1475 | if (err) | |
1476 | goto dcb_unlock; | |
1477 | ||
1478 | err = nla_put_u16(skb, DCB_APP_ATTR_ID, | |
1479 | itr->app.protocol); | |
1480 | if (err) | |
1481 | goto dcb_unlock; | |
1482 | ||
1483 | err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, | |
1484 | itr->app.priority); | |
1485 | if (err) | |
1486 | goto dcb_unlock; | |
1487 | ||
1488 | nla_nest_end(skb, app_nest); | |
1489 | } | |
1490 | } | |
1491 | nla_nest_end(skb, app); | |
1492 | ||
1493 | if (netdev->dcbnl_ops->getdcbx) | |
1494 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
1495 | else | |
1496 | dcbx = -EOPNOTSUPP; | |
1497 | ||
1498 | spin_unlock(&dcb_lock); | |
1499 | ||
1500 | /* features flags */ | |
1501 | if (ops->getfeatcfg) { | |
1502 | struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT); | |
1503 | if (!feat) | |
1504 | goto nla_put_failure; | |
1505 | ||
1506 | for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; | |
1507 | i++) | |
1eb4c977 DM |
1508 | if (!ops->getfeatcfg(netdev, i, &value) && |
1509 | nla_put_u8(skb, i, value)) | |
1510 | goto nla_put_failure; | |
5b7f7626 SR |
1511 | |
1512 | nla_nest_end(skb, feat); | |
1513 | } | |
1514 | ||
1515 | /* peer info if available */ | |
1516 | if (ops->cee_peer_getpg) { | |
1517 | struct cee_pg pg; | |
1518 | err = ops->cee_peer_getpg(netdev, &pg); | |
1eb4c977 DM |
1519 | if (!err && |
1520 | nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg)) | |
1521 | goto nla_put_failure; | |
5b7f7626 SR |
1522 | } |
1523 | ||
1524 | if (ops->cee_peer_getpfc) { | |
1525 | struct cee_pfc pfc; | |
1526 | err = ops->cee_peer_getpfc(netdev, &pfc); | |
1eb4c977 DM |
1527 | if (!err && |
1528 | nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc)) | |
1529 | goto nla_put_failure; | |
5b7f7626 SR |
1530 | } |
1531 | ||
1532 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
1533 | err = dcbnl_build_peer_app(netdev, skb, | |
1534 | DCB_ATTR_CEE_PEER_APP_TABLE, | |
1535 | DCB_ATTR_CEE_PEER_APP_INFO, | |
1536 | DCB_ATTR_CEE_PEER_APP); | |
1537 | if (err) | |
1538 | goto nla_put_failure; | |
1539 | } | |
1540 | nla_nest_end(skb, cee); | |
1541 | ||
1542 | /* DCBX state */ | |
1543 | if (dcbx >= 0) { | |
1544 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); | |
1545 | if (err) | |
1546 | goto nla_put_failure; | |
1547 | } | |
1548 | return 0; | |
1549 | ||
1550 | dcb_unlock: | |
1551 | spin_unlock(&dcb_lock); | |
1552 | nla_put_failure: | |
1553 | return err; | |
1554 | } | |
1555 | ||
1556 | static int dcbnl_notify(struct net_device *dev, int event, int cmd, | |
1557 | u32 seq, u32 pid, int dcbx_ver) | |
314b4778 JF |
1558 | { |
1559 | struct net *net = dev_net(dev); | |
1560 | struct sk_buff *skb; | |
1561 | struct nlmsghdr *nlh; | |
1562 | struct dcbmsg *dcb; | |
1563 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; | |
1564 | int err; | |
1565 | ||
1566 | if (!ops) | |
1567 | return -EOPNOTSUPP; | |
1568 | ||
1569 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1570 | if (!skb) | |
1571 | return -ENOBUFS; | |
1572 | ||
1573 | nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0); | |
1574 | if (nlh == NULL) { | |
4d054f2f | 1575 | nlmsg_free(skb); |
314b4778 JF |
1576 | return -EMSGSIZE; |
1577 | } | |
1578 | ||
1579 | dcb = NLMSG_DATA(nlh); | |
1580 | dcb->dcb_family = AF_UNSPEC; | |
1581 | dcb->cmd = cmd; | |
1582 | ||
5b7f7626 SR |
1583 | if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) |
1584 | err = dcbnl_ieee_fill(skb, dev); | |
1585 | else | |
1586 | err = dcbnl_cee_fill(skb, dev); | |
1587 | ||
314b4778 JF |
1588 | if (err < 0) { |
1589 | /* Report error to broadcast listeners */ | |
1590 | nlmsg_cancel(skb, nlh); | |
1591 | kfree_skb(skb); | |
1592 | rtnl_set_sk_err(net, RTNLGRP_DCB, err); | |
1593 | } else { | |
1594 | /* End nlmsg and notify broadcast listeners */ | |
1595 | nlmsg_end(skb, nlh); | |
1596 | rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL); | |
1597 | } | |
1598 | ||
1599 | return err; | |
1600 | } | |
5b7f7626 SR |
1601 | |
1602 | int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, | |
1603 | u32 seq, u32 pid) | |
1604 | { | |
1605 | return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_IEEE); | |
1606 | } | |
1607 | EXPORT_SYMBOL(dcbnl_ieee_notify); | |
1608 | ||
1609 | int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, | |
1610 | u32 seq, u32 pid) | |
1611 | { | |
1612 | return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_CEE); | |
1613 | } | |
1614 | EXPORT_SYMBOL(dcbnl_cee_notify); | |
314b4778 JF |
1615 | |
1616 | /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not | |
1617 | * be completed the entire msg is aborted and error value is returned. | |
1618 | * No attempt is made to reconcile the case where only part of the | |
1619 | * cmd can be completed. | |
1620 | */ | |
1621 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, | |
1622 | u32 pid, u32 seq, u16 flags) | |
1623 | { | |
1624 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1625 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; | |
1626 | int err = -EOPNOTSUPP; | |
1627 | ||
1628 | if (!ops) | |
1629 | return err; | |
1630 | ||
4003b658 JF |
1631 | if (!tb[DCB_ATTR_IEEE]) |
1632 | return -EINVAL; | |
1633 | ||
314b4778 JF |
1634 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, |
1635 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); | |
1636 | if (err) | |
1637 | return err; | |
1638 | ||
1639 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { | |
1640 | struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); | |
1641 | err = ops->ieee_setets(netdev, ets); | |
1642 | if (err) | |
1643 | goto err; | |
1644 | } | |
1645 | ||
08f10aff AV |
1646 | if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) { |
1647 | struct ieee_maxrate *maxrate = | |
1648 | nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]); | |
1649 | err = ops->ieee_setmaxrate(netdev, maxrate); | |
1650 | if (err) | |
1651 | goto err; | |
1652 | } | |
1653 | ||
314b4778 JF |
1654 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
1655 | struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); | |
1656 | err = ops->ieee_setpfc(netdev, pfc); | |
1657 | if (err) | |
1658 | goto err; | |
1659 | } | |
1660 | ||
1661 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { | |
1662 | struct nlattr *attr; | |
1663 | int rem; | |
1664 | ||
1665 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { | |
1666 | struct dcb_app *app_data; | |
1667 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) | |
1668 | continue; | |
1669 | app_data = nla_data(attr); | |
1670 | if (ops->ieee_setapp) | |
1671 | err = ops->ieee_setapp(netdev, app_data); | |
1672 | else | |
b6db2174 | 1673 | err = dcb_ieee_setapp(netdev, app_data); |
314b4778 JF |
1674 | if (err) |
1675 | goto err; | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | err: | |
1680 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, | |
1681 | pid, seq, flags); | |
5b7f7626 | 1682 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); |
314b4778 JF |
1683 | return err; |
1684 | } | |
1685 | ||
1686 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, | |
1687 | u32 pid, u32 seq, u16 flags) | |
1688 | { | |
1689 | struct net *net = dev_net(netdev); | |
1690 | struct sk_buff *skb; | |
1691 | struct nlmsghdr *nlh; | |
1692 | struct dcbmsg *dcb; | |
1693 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1694 | int err; | |
1695 | ||
1696 | if (!ops) | |
1697 | return -EOPNOTSUPP; | |
1698 | ||
1699 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1700 | if (!skb) | |
1701 | return -ENOBUFS; | |
1702 | ||
1703 | nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1704 | if (nlh == NULL) { | |
4d054f2f | 1705 | nlmsg_free(skb); |
314b4778 JF |
1706 | return -EMSGSIZE; |
1707 | } | |
1708 | ||
1709 | dcb = NLMSG_DATA(nlh); | |
1710 | dcb->dcb_family = AF_UNSPEC; | |
1711 | dcb->cmd = DCB_CMD_IEEE_GET; | |
1712 | ||
1713 | err = dcbnl_ieee_fill(skb, netdev); | |
1714 | ||
1715 | if (err < 0) { | |
1716 | nlmsg_cancel(skb, nlh); | |
1717 | kfree_skb(skb); | |
1718 | } else { | |
1719 | nlmsg_end(skb, nlh); | |
1720 | err = rtnl_unicast(skb, net, pid); | |
1721 | } | |
1722 | ||
1723 | return err; | |
1724 | } | |
f9ae7e4b JF |
1725 | |
1726 | static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb, | |
1727 | u32 pid, u32 seq, u16 flags) | |
1728 | { | |
1729 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1730 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; | |
1731 | int err = -EOPNOTSUPP; | |
1732 | ||
1733 | if (!ops) | |
1734 | return -EOPNOTSUPP; | |
1735 | ||
1736 | if (!tb[DCB_ATTR_IEEE]) | |
1737 | return -EINVAL; | |
1738 | ||
1739 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, | |
1740 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); | |
1741 | if (err) | |
1742 | return err; | |
1743 | ||
1744 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { | |
1745 | struct nlattr *attr; | |
1746 | int rem; | |
1747 | ||
1748 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { | |
1749 | struct dcb_app *app_data; | |
1750 | ||
1751 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) | |
1752 | continue; | |
1753 | app_data = nla_data(attr); | |
1754 | if (ops->ieee_delapp) | |
1755 | err = ops->ieee_delapp(netdev, app_data); | |
1756 | else | |
1757 | err = dcb_ieee_delapp(netdev, app_data); | |
1758 | if (err) | |
1759 | goto err; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | err: | |
1764 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE, | |
1765 | pid, seq, flags); | |
5b7f7626 | 1766 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); |
f9ae7e4b JF |
1767 | return err; |
1768 | } | |
1769 | ||
1770 | ||
6241b625 SR |
1771 | /* DCBX configuration */ |
1772 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb, | |
1773 | u32 pid, u32 seq, u16 flags) | |
1774 | { | |
7f891cf1 | 1775 | int ret; |
6241b625 SR |
1776 | |
1777 | if (!netdev->dcbnl_ops->getdcbx) | |
7f891cf1 | 1778 | return -EOPNOTSUPP; |
6241b625 SR |
1779 | |
1780 | ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB, | |
1781 | DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags); | |
1782 | ||
1783 | return ret; | |
1784 | } | |
1785 | ||
1786 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb, | |
1787 | u32 pid, u32 seq, u16 flags) | |
1788 | { | |
7f891cf1 | 1789 | int ret; |
6241b625 SR |
1790 | u8 value; |
1791 | ||
7f891cf1 SR |
1792 | if (!netdev->dcbnl_ops->setdcbx) |
1793 | return -EOPNOTSUPP; | |
1794 | ||
1795 | if (!tb[DCB_ATTR_DCBX]) | |
1796 | return -EINVAL; | |
6241b625 SR |
1797 | |
1798 | value = nla_get_u8(tb[DCB_ATTR_DCBX]); | |
1799 | ||
1800 | ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value), | |
1801 | RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX, | |
1802 | pid, seq, flags); | |
1803 | ||
1804 | return ret; | |
1805 | } | |
1806 | ||
ea45fe4e SR |
1807 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb, |
1808 | u32 pid, u32 seq, u16 flags) | |
1809 | { | |
1810 | struct sk_buff *dcbnl_skb; | |
1811 | struct nlmsghdr *nlh; | |
1812 | struct dcbmsg *dcb; | |
1813 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; | |
1814 | u8 value; | |
7f891cf1 | 1815 | int ret, i; |
ea45fe4e SR |
1816 | int getall = 0; |
1817 | ||
7f891cf1 SR |
1818 | if (!netdev->dcbnl_ops->getfeatcfg) |
1819 | return -EOPNOTSUPP; | |
1820 | ||
1821 | if (!tb[DCB_ATTR_FEATCFG]) | |
1822 | return -EINVAL; | |
ea45fe4e SR |
1823 | |
1824 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], | |
1825 | dcbnl_featcfg_nest); | |
7f891cf1 | 1826 | if (ret) |
ea45fe4e | 1827 | goto err_out; |
ea45fe4e SR |
1828 | |
1829 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1830 | if (!dcbnl_skb) { | |
7f891cf1 | 1831 | ret = -ENOBUFS; |
ea45fe4e SR |
1832 | goto err_out; |
1833 | } | |
1834 | ||
1835 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1836 | ||
1837 | dcb = NLMSG_DATA(nlh); | |
1838 | dcb->dcb_family = AF_UNSPEC; | |
1839 | dcb->cmd = DCB_CMD_GFEATCFG; | |
1840 | ||
1841 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG); | |
1842 | if (!nest) { | |
7f891cf1 SR |
1843 | ret = -EMSGSIZE; |
1844 | goto nla_put_failure; | |
ea45fe4e SR |
1845 | } |
1846 | ||
1847 | if (data[DCB_FEATCFG_ATTR_ALL]) | |
1848 | getall = 1; | |
1849 | ||
1850 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1851 | if (!getall && !data[i]) | |
1852 | continue; | |
1853 | ||
1854 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); | |
7f891cf1 | 1855 | if (!ret) |
ea45fe4e SR |
1856 | ret = nla_put_u8(dcbnl_skb, i, value); |
1857 | ||
7f891cf1 SR |
1858 | if (ret) { |
1859 | nla_nest_cancel(dcbnl_skb, nest); | |
1860 | goto nla_put_failure; | |
1861 | } | |
ea45fe4e SR |
1862 | } |
1863 | nla_nest_end(dcbnl_skb, nest); | |
1864 | ||
1865 | nlmsg_end(dcbnl_skb, nlh); | |
1866 | ||
7f891cf1 SR |
1867 | return rtnl_unicast(dcbnl_skb, &init_net, pid); |
1868 | nla_put_failure: | |
1869 | nlmsg_cancel(dcbnl_skb, nlh); | |
ea45fe4e | 1870 | nlmsg_failure: |
ea45fe4e SR |
1871 | kfree_skb(dcbnl_skb); |
1872 | err_out: | |
1873 | return ret; | |
1874 | } | |
1875 | ||
1876 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb, | |
1877 | u32 pid, u32 seq, u16 flags) | |
1878 | { | |
1879 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; | |
7f891cf1 | 1880 | int ret, i; |
ea45fe4e | 1881 | u8 value; |
ea45fe4e | 1882 | |
7f891cf1 SR |
1883 | if (!netdev->dcbnl_ops->setfeatcfg) |
1884 | return -ENOTSUPP; | |
1885 | ||
1886 | if (!tb[DCB_ATTR_FEATCFG]) | |
1887 | return -EINVAL; | |
ea45fe4e SR |
1888 | |
1889 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], | |
1890 | dcbnl_featcfg_nest); | |
1891 | ||
7f891cf1 | 1892 | if (ret) |
ea45fe4e | 1893 | goto err; |
ea45fe4e SR |
1894 | |
1895 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1896 | if (data[i] == NULL) | |
1897 | continue; | |
1898 | ||
1899 | value = nla_get_u8(data[i]); | |
1900 | ||
1901 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); | |
1902 | ||
1903 | if (ret) | |
7f891cf1 | 1904 | goto err; |
ea45fe4e | 1905 | } |
ea45fe4e | 1906 | err: |
7f891cf1 SR |
1907 | dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG, |
1908 | pid, seq, flags); | |
1909 | ||
ea45fe4e SR |
1910 | return ret; |
1911 | } | |
1912 | ||
dc6ed1df SR |
1913 | /* Handle CEE DCBX GET commands. */ |
1914 | static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb, | |
1915 | u32 pid, u32 seq, u16 flags) | |
1916 | { | |
5b7f7626 | 1917 | struct net *net = dev_net(netdev); |
dc6ed1df SR |
1918 | struct sk_buff *skb; |
1919 | struct nlmsghdr *nlh; | |
1920 | struct dcbmsg *dcb; | |
dc6ed1df | 1921 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
5b7f7626 | 1922 | int err; |
dc6ed1df SR |
1923 | |
1924 | if (!ops) | |
1925 | return -EOPNOTSUPP; | |
1926 | ||
1927 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1928 | if (!skb) | |
1929 | return -ENOBUFS; | |
1930 | ||
5b7f7626 SR |
1931 | nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
1932 | if (nlh == NULL) { | |
1933 | nlmsg_free(skb); | |
1934 | return -EMSGSIZE; | |
1935 | } | |
dc6ed1df SR |
1936 | |
1937 | dcb = NLMSG_DATA(nlh); | |
1938 | dcb->dcb_family = AF_UNSPEC; | |
1939 | dcb->cmd = DCB_CMD_CEE_GET; | |
1940 | ||
5b7f7626 | 1941 | err = dcbnl_cee_fill(skb, netdev); |
37cf4d1a | 1942 | |
5b7f7626 SR |
1943 | if (err < 0) { |
1944 | nlmsg_cancel(skb, nlh); | |
1945 | nlmsg_free(skb); | |
1946 | } else { | |
1947 | nlmsg_end(skb, nlh); | |
1948 | err = rtnl_unicast(skb, net, pid); | |
37cf4d1a | 1949 | } |
37cf4d1a | 1950 | return err; |
dc6ed1df SR |
1951 | } |
1952 | ||
33a03aad TG |
1953 | struct reply_func { |
1954 | /* reply netlink message type */ | |
1955 | int type; | |
1956 | ||
1957 | /* function to fill message contents */ | |
1958 | int (*cb)(struct net_device *, struct nlmsghdr *, u32, | |
1959 | struct nlattr **, struct sk_buff *); | |
1960 | }; | |
1961 | ||
1962 | static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = { | |
1963 | /* FIXME: add reply defs */ | |
1964 | }; | |
1965 | ||
2f90b865 AD |
1966 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1967 | { | |
1968 | struct net *net = sock_net(skb->sk); | |
1969 | struct net_device *netdev; | |
1970 | struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh); | |
1971 | struct nlattr *tb[DCB_ATTR_MAX + 1]; | |
1972 | u32 pid = skb ? NETLINK_CB(skb).pid : 0; | |
1973 | int ret = -EINVAL; | |
33a03aad TG |
1974 | struct sk_buff *reply_skb; |
1975 | struct nlmsghdr *reply_nlh; | |
1976 | const struct reply_func *fn; | |
2f90b865 | 1977 | |
09ad9bc7 | 1978 | if (!net_eq(net, &init_net)) |
2f90b865 AD |
1979 | return -EINVAL; |
1980 | ||
1981 | ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, | |
1982 | dcbnl_rtnl_policy); | |
1983 | if (ret < 0) | |
1984 | return ret; | |
1985 | ||
33a03aad TG |
1986 | if (dcb->cmd > DCB_CMD_MAX) |
1987 | return -EINVAL; | |
1988 | ||
1989 | /* check if a reply function has been defined for the command */ | |
1990 | fn = &reply_funcs[dcb->cmd]; | |
1991 | if (!fn->cb) | |
1992 | return -EOPNOTSUPP; | |
1993 | ||
2f90b865 AD |
1994 | if (!tb[DCB_ATTR_IFNAME]) |
1995 | return -EINVAL; | |
1996 | ||
1997 | netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME])); | |
1998 | if (!netdev) | |
1999 | return -EINVAL; | |
2000 | ||
2001 | if (!netdev->dcbnl_ops) | |
2002 | goto errout; | |
2003 | ||
33a03aad TG |
2004 | reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, pid, nlh->nlmsg_seq, |
2005 | nlh->nlmsg_flags, &reply_nlh); | |
2006 | if (!reply_skb) { | |
2007 | ret = -ENOBUFS; | |
2008 | goto out; | |
2009 | } | |
2010 | ||
2011 | ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb); | |
2012 | if (ret < 0) { | |
2013 | nlmsg_free(reply_skb); | |
2014 | goto out; | |
2015 | } | |
2016 | ||
2017 | nlmsg_end(reply_skb, reply_nlh); | |
2018 | ||
2019 | ret = rtnl_unicast(reply_skb, &init_net, pid); | |
2020 | if (ret) | |
2021 | goto out; | |
2022 | ||
2f90b865 AD |
2023 | switch (dcb->cmd) { |
2024 | case DCB_CMD_GSTATE: | |
2025 | ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq, | |
2026 | nlh->nlmsg_flags); | |
2027 | goto out; | |
2028 | case DCB_CMD_PFC_GCFG: | |
2029 | ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2030 | nlh->nlmsg_flags); | |
2031 | goto out; | |
2032 | case DCB_CMD_GPERM_HWADDR: | |
2033 | ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq, | |
2034 | nlh->nlmsg_flags); | |
2035 | goto out; | |
2036 | case DCB_CMD_PGTX_GCFG: | |
2037 | ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2038 | nlh->nlmsg_flags); | |
2039 | goto out; | |
2040 | case DCB_CMD_PGRX_GCFG: | |
2041 | ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2042 | nlh->nlmsg_flags); | |
2043 | goto out; | |
859ee3c4 AD |
2044 | case DCB_CMD_BCN_GCFG: |
2045 | ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2046 | nlh->nlmsg_flags); | |
2047 | goto out; | |
2f90b865 AD |
2048 | case DCB_CMD_SSTATE: |
2049 | ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq, | |
2050 | nlh->nlmsg_flags); | |
2051 | goto out; | |
2052 | case DCB_CMD_PFC_SCFG: | |
2053 | ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2054 | nlh->nlmsg_flags); | |
2055 | goto out; | |
2056 | ||
2057 | case DCB_CMD_SET_ALL: | |
2058 | ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq, | |
2059 | nlh->nlmsg_flags); | |
2060 | goto out; | |
2061 | case DCB_CMD_PGTX_SCFG: | |
2062 | ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2063 | nlh->nlmsg_flags); | |
2064 | goto out; | |
2065 | case DCB_CMD_PGRX_SCFG: | |
2066 | ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2067 | nlh->nlmsg_flags); | |
2068 | goto out; | |
46132188 AD |
2069 | case DCB_CMD_GCAP: |
2070 | ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq, | |
2071 | nlh->nlmsg_flags); | |
2072 | goto out; | |
33dbabc4 AD |
2073 | case DCB_CMD_GNUMTCS: |
2074 | ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq, | |
2075 | nlh->nlmsg_flags); | |
2076 | goto out; | |
2077 | case DCB_CMD_SNUMTCS: | |
2078 | ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq, | |
2079 | nlh->nlmsg_flags); | |
2080 | goto out; | |
0eb3aa9b AD |
2081 | case DCB_CMD_PFC_GSTATE: |
2082 | ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq, | |
2083 | nlh->nlmsg_flags); | |
2084 | goto out; | |
2085 | case DCB_CMD_PFC_SSTATE: | |
2086 | ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq, | |
2087 | nlh->nlmsg_flags); | |
2088 | goto out; | |
859ee3c4 AD |
2089 | case DCB_CMD_BCN_SCFG: |
2090 | ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2091 | nlh->nlmsg_flags); | |
2092 | goto out; | |
57949686 YZ |
2093 | case DCB_CMD_GAPP: |
2094 | ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq, | |
2095 | nlh->nlmsg_flags); | |
2096 | goto out; | |
2097 | case DCB_CMD_SAPP: | |
2098 | ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq, | |
2099 | nlh->nlmsg_flags); | |
2100 | goto out; | |
3e29027a JF |
2101 | case DCB_CMD_IEEE_SET: |
2102 | ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq, | |
f9ae7e4b | 2103 | nlh->nlmsg_flags); |
3e29027a JF |
2104 | goto out; |
2105 | case DCB_CMD_IEEE_GET: | |
2106 | ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq, | |
f9ae7e4b JF |
2107 | nlh->nlmsg_flags); |
2108 | goto out; | |
2109 | case DCB_CMD_IEEE_DEL: | |
2110 | ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq, | |
2111 | nlh->nlmsg_flags); | |
3e29027a | 2112 | goto out; |
6241b625 SR |
2113 | case DCB_CMD_GDCBX: |
2114 | ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq, | |
2115 | nlh->nlmsg_flags); | |
2116 | goto out; | |
2117 | case DCB_CMD_SDCBX: | |
2118 | ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq, | |
2119 | nlh->nlmsg_flags); | |
2120 | goto out; | |
ea45fe4e SR |
2121 | case DCB_CMD_GFEATCFG: |
2122 | ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2123 | nlh->nlmsg_flags); | |
2124 | goto out; | |
2125 | case DCB_CMD_SFEATCFG: | |
2126 | ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
2127 | nlh->nlmsg_flags); | |
2128 | goto out; | |
dc6ed1df SR |
2129 | case DCB_CMD_CEE_GET: |
2130 | ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq, | |
2131 | nlh->nlmsg_flags); | |
2132 | goto out; | |
2f90b865 AD |
2133 | default: |
2134 | goto errout; | |
2135 | } | |
2136 | errout: | |
2137 | ret = -EINVAL; | |
2138 | out: | |
2139 | dev_put(netdev); | |
2140 | return ret; | |
2141 | } | |
2142 | ||
9ab933ab JF |
2143 | /** |
2144 | * dcb_getapp - retrieve the DCBX application user priority | |
2145 | * | |
2146 | * On success returns a non-zero 802.1p user priority bitmap | |
2147 | * otherwise returns 0 as the invalid user priority bitmap to | |
2148 | * indicate an error. | |
2149 | */ | |
2150 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) | |
2151 | { | |
2152 | struct dcb_app_type *itr; | |
2153 | u8 prio = 0; | |
2154 | ||
2155 | spin_lock(&dcb_lock); | |
2156 | list_for_each_entry(itr, &dcb_app_list, list) { | |
2157 | if (itr->app.selector == app->selector && | |
2158 | itr->app.protocol == app->protocol && | |
e290ed81 | 2159 | itr->ifindex == dev->ifindex) { |
9ab933ab JF |
2160 | prio = itr->app.priority; |
2161 | break; | |
2162 | } | |
2163 | } | |
2164 | spin_unlock(&dcb_lock); | |
2165 | ||
2166 | return prio; | |
2167 | } | |
2168 | EXPORT_SYMBOL(dcb_getapp); | |
2169 | ||
2170 | /** | |
b6db2174 | 2171 | * dcb_setapp - add CEE dcb application data to app list |
9ab933ab | 2172 | * |
b6db2174 JF |
2173 | * Priority 0 is an invalid priority in CEE spec. This routine |
2174 | * removes applications from the app list if the priority is | |
2175 | * set to zero. | |
9ab933ab | 2176 | */ |
ab6baf98 | 2177 | int dcb_setapp(struct net_device *dev, struct dcb_app *new) |
9ab933ab JF |
2178 | { |
2179 | struct dcb_app_type *itr; | |
7ec79270 JF |
2180 | struct dcb_app_type event; |
2181 | ||
e290ed81 | 2182 | event.ifindex = dev->ifindex; |
7ec79270 | 2183 | memcpy(&event.app, new, sizeof(event.app)); |
6bd0e1cb JF |
2184 | if (dev->dcbnl_ops->getdcbx) |
2185 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
9ab933ab JF |
2186 | |
2187 | spin_lock(&dcb_lock); | |
2188 | /* Search for existing match and replace */ | |
2189 | list_for_each_entry(itr, &dcb_app_list, list) { | |
2190 | if (itr->app.selector == new->selector && | |
2191 | itr->app.protocol == new->protocol && | |
e290ed81 | 2192 | itr->ifindex == dev->ifindex) { |
9ab933ab JF |
2193 | if (new->priority) |
2194 | itr->app.priority = new->priority; | |
2195 | else { | |
2196 | list_del(&itr->list); | |
2197 | kfree(itr); | |
2198 | } | |
2199 | goto out; | |
2200 | } | |
2201 | } | |
2202 | /* App type does not exist add new application type */ | |
2203 | if (new->priority) { | |
2204 | struct dcb_app_type *entry; | |
2205 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); | |
2206 | if (!entry) { | |
2207 | spin_unlock(&dcb_lock); | |
2208 | return -ENOMEM; | |
2209 | } | |
2210 | ||
2211 | memcpy(&entry->app, new, sizeof(*new)); | |
e290ed81 | 2212 | entry->ifindex = dev->ifindex; |
9ab933ab JF |
2213 | list_add(&entry->list, &dcb_app_list); |
2214 | } | |
2215 | out: | |
2216 | spin_unlock(&dcb_lock); | |
7ec79270 | 2217 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
9ab933ab JF |
2218 | return 0; |
2219 | } | |
2220 | EXPORT_SYMBOL(dcb_setapp); | |
2221 | ||
a364c8cf JF |
2222 | /** |
2223 | * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority | |
2224 | * | |
2225 | * Helper routine which on success returns a non-zero 802.1Qaz user | |
2226 | * priority bitmap otherwise returns 0 to indicate the dcb_app was | |
2227 | * not found in APP list. | |
2228 | */ | |
2229 | u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app) | |
2230 | { | |
2231 | struct dcb_app_type *itr; | |
2232 | u8 prio = 0; | |
2233 | ||
2234 | spin_lock(&dcb_lock); | |
2235 | list_for_each_entry(itr, &dcb_app_list, list) { | |
2236 | if (itr->app.selector == app->selector && | |
2237 | itr->app.protocol == app->protocol && | |
e290ed81 | 2238 | itr->ifindex == dev->ifindex) { |
a364c8cf JF |
2239 | prio |= 1 << itr->app.priority; |
2240 | } | |
2241 | } | |
2242 | spin_unlock(&dcb_lock); | |
2243 | ||
2244 | return prio; | |
2245 | } | |
2246 | EXPORT_SYMBOL(dcb_ieee_getapp_mask); | |
2247 | ||
b6db2174 JF |
2248 | /** |
2249 | * dcb_ieee_setapp - add IEEE dcb application data to app list | |
2250 | * | |
2251 | * This adds Application data to the list. Multiple application | |
2252 | * entries may exists for the same selector and protocol as long | |
2253 | * as the priorities are different. | |
2254 | */ | |
2255 | int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new) | |
2256 | { | |
2257 | struct dcb_app_type *itr, *entry; | |
2258 | struct dcb_app_type event; | |
2259 | int err = 0; | |
2260 | ||
e290ed81 | 2261 | event.ifindex = dev->ifindex; |
b6db2174 | 2262 | memcpy(&event.app, new, sizeof(event.app)); |
6bd0e1cb JF |
2263 | if (dev->dcbnl_ops->getdcbx) |
2264 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
b6db2174 JF |
2265 | |
2266 | spin_lock(&dcb_lock); | |
2267 | /* Search for existing match and abort if found */ | |
2268 | list_for_each_entry(itr, &dcb_app_list, list) { | |
2269 | if (itr->app.selector == new->selector && | |
2270 | itr->app.protocol == new->protocol && | |
2271 | itr->app.priority == new->priority && | |
e290ed81 | 2272 | itr->ifindex == dev->ifindex) { |
b6db2174 JF |
2273 | err = -EEXIST; |
2274 | goto out; | |
2275 | } | |
2276 | } | |
2277 | ||
2278 | /* App entry does not exist add new entry */ | |
2279 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); | |
2280 | if (!entry) { | |
2281 | err = -ENOMEM; | |
2282 | goto out; | |
2283 | } | |
2284 | ||
2285 | memcpy(&entry->app, new, sizeof(*new)); | |
e290ed81 | 2286 | entry->ifindex = dev->ifindex; |
b6db2174 JF |
2287 | list_add(&entry->list, &dcb_app_list); |
2288 | out: | |
2289 | spin_unlock(&dcb_lock); | |
2290 | if (!err) | |
2291 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); | |
2292 | return err; | |
2293 | } | |
2294 | EXPORT_SYMBOL(dcb_ieee_setapp); | |
2295 | ||
f9ae7e4b JF |
2296 | /** |
2297 | * dcb_ieee_delapp - delete IEEE dcb application data from list | |
2298 | * | |
2299 | * This removes a matching APP data from the APP list | |
2300 | */ | |
2301 | int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) | |
2302 | { | |
2303 | struct dcb_app_type *itr; | |
2304 | struct dcb_app_type event; | |
2305 | int err = -ENOENT; | |
2306 | ||
e290ed81 | 2307 | event.ifindex = dev->ifindex; |
f9ae7e4b | 2308 | memcpy(&event.app, del, sizeof(event.app)); |
6bd0e1cb JF |
2309 | if (dev->dcbnl_ops->getdcbx) |
2310 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
f9ae7e4b JF |
2311 | |
2312 | spin_lock(&dcb_lock); | |
2313 | /* Search for existing match and remove it. */ | |
2314 | list_for_each_entry(itr, &dcb_app_list, list) { | |
2315 | if (itr->app.selector == del->selector && | |
2316 | itr->app.protocol == del->protocol && | |
2317 | itr->app.priority == del->priority && | |
e290ed81 | 2318 | itr->ifindex == dev->ifindex) { |
f9ae7e4b JF |
2319 | list_del(&itr->list); |
2320 | kfree(itr); | |
2321 | err = 0; | |
2322 | goto out; | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | out: | |
2327 | spin_unlock(&dcb_lock); | |
2328 | if (!err) | |
2329 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); | |
2330 | return err; | |
2331 | } | |
2332 | EXPORT_SYMBOL(dcb_ieee_delapp); | |
2333 | ||
7c14c3f1 | 2334 | static void dcb_flushapp(void) |
9ab933ab JF |
2335 | { |
2336 | struct dcb_app_type *app; | |
2a8fe003 | 2337 | struct dcb_app_type *tmp; |
9ab933ab JF |
2338 | |
2339 | spin_lock(&dcb_lock); | |
2a8fe003 | 2340 | list_for_each_entry_safe(app, tmp, &dcb_app_list, list) { |
9ab933ab JF |
2341 | list_del(&app->list); |
2342 | kfree(app); | |
2343 | } | |
2344 | spin_unlock(&dcb_lock); | |
2345 | } | |
2346 | ||
2f90b865 AD |
2347 | static int __init dcbnl_init(void) |
2348 | { | |
9ab933ab JF |
2349 | INIT_LIST_HEAD(&dcb_app_list); |
2350 | ||
c7ac8679 GR |
2351 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL); |
2352 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL); | |
2f90b865 AD |
2353 | |
2354 | return 0; | |
2355 | } | |
2356 | module_init(dcbnl_init); | |
2357 | ||
2358 | static void __exit dcbnl_exit(void) | |
2359 | { | |
2360 | rtnl_unregister(PF_UNSPEC, RTM_GETDCB); | |
2361 | rtnl_unregister(PF_UNSPEC, RTM_SETDCB); | |
9ab933ab | 2362 | dcb_flushapp(); |
2f90b865 AD |
2363 | } |
2364 | module_exit(dcbnl_exit); |