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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 AD |
27 | #include <linux/rtnetlink.h> |
28 | #include <net/sock.h> | |
29 | ||
30 | /** | |
31 | * Data Center Bridging (DCB) is a collection of Ethernet enhancements | |
32 | * intended to allow network traffic with differing requirements | |
33 | * (highly reliable, no drops vs. best effort vs. low latency) to operate | |
34 | * and co-exist on Ethernet. Current DCB features are: | |
35 | * | |
36 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a | |
37 | * framework for assigning bandwidth guarantees to traffic classes. | |
38 | * | |
39 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which | |
40 | * can work independently for each 802.1p priority. | |
41 | * | |
42 | * Congestion Notification - provides a mechanism for end-to-end congestion | |
43 | * control for protocols which do not have built-in congestion management. | |
44 | * | |
45 | * More information about the emerging standards for these Ethernet features | |
46 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html | |
47 | * | |
48 | * This file implements an rtnetlink interface to allow configuration of DCB | |
49 | * features for capable devices. | |
50 | */ | |
51 | ||
52 | MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>"); | |
7a6b6f51 | 53 | MODULE_DESCRIPTION("Data Center Bridging netlink interface"); |
2f90b865 AD |
54 | MODULE_LICENSE("GPL"); |
55 | ||
56 | /**************** DCB attribute policies *************************************/ | |
57 | ||
58 | /* DCB netlink attributes policy */ | |
b54452b0 | 59 | static 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 | 76 | static 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 | 89 | static 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 | 111 | static 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 | 120 | static 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 | 133 | static 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 | 140 | static 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 | 169 | static 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. */ |
176 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { | |
177 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, | |
178 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, | |
179 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, | |
180 | }; | |
181 | ||
182 | static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = { | |
183 | [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)}, | |
184 | }; | |
185 | ||
ea45fe4e SR |
186 | /* DCB number of traffic classes nested attributes. */ |
187 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { | |
188 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, | |
189 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, | |
190 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, | |
191 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, | |
192 | }; | |
193 | ||
9ab933ab JF |
194 | static LIST_HEAD(dcb_app_list); |
195 | static DEFINE_SPINLOCK(dcb_lock); | |
196 | ||
2f90b865 AD |
197 | /* standard netlink reply call */ |
198 | static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid, | |
199 | u32 seq, u16 flags) | |
200 | { | |
201 | struct sk_buff *dcbnl_skb; | |
202 | struct dcbmsg *dcb; | |
203 | struct nlmsghdr *nlh; | |
204 | int ret = -EINVAL; | |
205 | ||
206 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
207 | if (!dcbnl_skb) | |
208 | return ret; | |
209 | ||
210 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags); | |
211 | ||
212 | dcb = NLMSG_DATA(nlh); | |
213 | dcb->dcb_family = AF_UNSPEC; | |
214 | dcb->cmd = cmd; | |
215 | dcb->dcb_pad = 0; | |
216 | ||
217 | ret = nla_put_u8(dcbnl_skb, attr, value); | |
218 | if (ret) | |
219 | goto err; | |
220 | ||
221 | /* end the message, assign the nlmsg_len. */ | |
222 | nlmsg_end(dcbnl_skb, nlh); | |
223 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
224 | if (ret) | |
7eaf5077 | 225 | return -EINVAL; |
2f90b865 AD |
226 | |
227 | return 0; | |
228 | nlmsg_failure: | |
229 | err: | |
858eb711 | 230 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
231 | return ret; |
232 | } | |
233 | ||
234 | static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb, | |
235 | u32 pid, u32 seq, u16 flags) | |
236 | { | |
237 | int ret = -EINVAL; | |
238 | ||
239 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ | |
240 | if (!netdev->dcbnl_ops->getstate) | |
241 | return ret; | |
242 | ||
243 | ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB, | |
244 | DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags); | |
245 | ||
246 | return ret; | |
247 | } | |
248 | ||
249 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb, | |
250 | u32 pid, u32 seq, u16 flags) | |
251 | { | |
252 | struct sk_buff *dcbnl_skb; | |
253 | struct nlmsghdr *nlh; | |
254 | struct dcbmsg *dcb; | |
255 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; | |
256 | u8 value; | |
257 | int ret = -EINVAL; | |
258 | int i; | |
259 | int getall = 0; | |
260 | ||
261 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg) | |
262 | return ret; | |
263 | ||
264 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
265 | tb[DCB_ATTR_PFC_CFG], | |
266 | dcbnl_pfc_up_nest); | |
267 | if (ret) | |
268 | goto err_out; | |
269 | ||
270 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
271 | if (!dcbnl_skb) | |
272 | goto err_out; | |
273 | ||
274 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
275 | ||
276 | dcb = NLMSG_DATA(nlh); | |
277 | dcb->dcb_family = AF_UNSPEC; | |
278 | dcb->cmd = DCB_CMD_PFC_GCFG; | |
279 | ||
280 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG); | |
281 | if (!nest) | |
282 | goto err; | |
283 | ||
284 | if (data[DCB_PFC_UP_ATTR_ALL]) | |
285 | getall = 1; | |
286 | ||
287 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
288 | if (!getall && !data[i]) | |
289 | continue; | |
290 | ||
291 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, | |
292 | &value); | |
293 | ret = nla_put_u8(dcbnl_skb, i, value); | |
294 | ||
295 | if (ret) { | |
296 | nla_nest_cancel(dcbnl_skb, nest); | |
297 | goto err; | |
298 | } | |
299 | } | |
300 | nla_nest_end(dcbnl_skb, nest); | |
301 | ||
302 | nlmsg_end(dcbnl_skb, nlh); | |
303 | ||
304 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
305 | if (ret) | |
7eaf5077 | 306 | goto err_out; |
2f90b865 AD |
307 | |
308 | return 0; | |
309 | nlmsg_failure: | |
310 | err: | |
858eb711 | 311 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
312 | err_out: |
313 | return -EINVAL; | |
314 | } | |
315 | ||
316 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb, | |
317 | u32 pid, u32 seq, u16 flags) | |
318 | { | |
319 | struct sk_buff *dcbnl_skb; | |
320 | struct nlmsghdr *nlh; | |
321 | struct dcbmsg *dcb; | |
322 | u8 perm_addr[MAX_ADDR_LEN]; | |
323 | int ret = -EINVAL; | |
324 | ||
325 | if (!netdev->dcbnl_ops->getpermhwaddr) | |
326 | return ret; | |
327 | ||
328 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
329 | if (!dcbnl_skb) | |
330 | goto err_out; | |
331 | ||
332 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
333 | ||
334 | dcb = NLMSG_DATA(nlh); | |
335 | dcb->dcb_family = AF_UNSPEC; | |
336 | dcb->cmd = DCB_CMD_GPERM_HWADDR; | |
337 | ||
338 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); | |
339 | ||
340 | ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), | |
341 | perm_addr); | |
342 | ||
343 | nlmsg_end(dcbnl_skb, nlh); | |
344 | ||
345 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
346 | if (ret) | |
7eaf5077 | 347 | goto err_out; |
2f90b865 AD |
348 | |
349 | return 0; | |
350 | ||
351 | nlmsg_failure: | |
858eb711 | 352 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
353 | err_out: |
354 | return -EINVAL; | |
355 | } | |
356 | ||
46132188 AD |
357 | static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb, |
358 | u32 pid, u32 seq, u16 flags) | |
359 | { | |
360 | struct sk_buff *dcbnl_skb; | |
361 | struct nlmsghdr *nlh; | |
362 | struct dcbmsg *dcb; | |
363 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; | |
364 | u8 value; | |
365 | int ret = -EINVAL; | |
366 | int i; | |
367 | int getall = 0; | |
368 | ||
369 | if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap) | |
370 | return ret; | |
371 | ||
372 | ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], | |
373 | dcbnl_cap_nest); | |
374 | if (ret) | |
375 | goto err_out; | |
376 | ||
377 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
378 | if (!dcbnl_skb) | |
379 | goto err_out; | |
380 | ||
381 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
382 | ||
383 | dcb = NLMSG_DATA(nlh); | |
384 | dcb->dcb_family = AF_UNSPEC; | |
385 | dcb->cmd = DCB_CMD_GCAP; | |
386 | ||
387 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP); | |
388 | if (!nest) | |
389 | goto err; | |
390 | ||
391 | if (data[DCB_CAP_ATTR_ALL]) | |
392 | getall = 1; | |
393 | ||
394 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { | |
395 | if (!getall && !data[i]) | |
396 | continue; | |
397 | ||
398 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { | |
399 | ret = nla_put_u8(dcbnl_skb, i, value); | |
400 | ||
401 | if (ret) { | |
402 | nla_nest_cancel(dcbnl_skb, nest); | |
403 | goto err; | |
404 | } | |
405 | } | |
406 | } | |
407 | nla_nest_end(dcbnl_skb, nest); | |
408 | ||
409 | nlmsg_end(dcbnl_skb, nlh); | |
410 | ||
411 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
412 | if (ret) | |
7eaf5077 | 413 | goto err_out; |
46132188 AD |
414 | |
415 | return 0; | |
416 | nlmsg_failure: | |
417 | err: | |
858eb711 | 418 | kfree_skb(dcbnl_skb); |
46132188 AD |
419 | err_out: |
420 | return -EINVAL; | |
421 | } | |
422 | ||
33dbabc4 AD |
423 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb, |
424 | u32 pid, u32 seq, u16 flags) | |
425 | { | |
426 | struct sk_buff *dcbnl_skb; | |
427 | struct nlmsghdr *nlh; | |
428 | struct dcbmsg *dcb; | |
429 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; | |
430 | u8 value; | |
431 | int ret = -EINVAL; | |
432 | int i; | |
433 | int getall = 0; | |
434 | ||
435 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs) | |
436 | return ret; | |
437 | ||
438 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
439 | dcbnl_numtcs_nest); | |
440 | if (ret) { | |
441 | ret = -EINVAL; | |
442 | goto err_out; | |
443 | } | |
444 | ||
445 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
446 | if (!dcbnl_skb) { | |
447 | ret = -EINVAL; | |
448 | goto err_out; | |
449 | } | |
450 | ||
451 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
452 | ||
453 | dcb = NLMSG_DATA(nlh); | |
454 | dcb->dcb_family = AF_UNSPEC; | |
455 | dcb->cmd = DCB_CMD_GNUMTCS; | |
456 | ||
457 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS); | |
458 | if (!nest) { | |
459 | ret = -EINVAL; | |
460 | goto err; | |
461 | } | |
462 | ||
463 | if (data[DCB_NUMTCS_ATTR_ALL]) | |
464 | getall = 1; | |
465 | ||
466 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
467 | if (!getall && !data[i]) | |
468 | continue; | |
469 | ||
470 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); | |
471 | if (!ret) { | |
472 | ret = nla_put_u8(dcbnl_skb, i, value); | |
473 | ||
474 | if (ret) { | |
475 | nla_nest_cancel(dcbnl_skb, nest); | |
476 | ret = -EINVAL; | |
477 | goto err; | |
478 | } | |
479 | } else { | |
480 | goto err; | |
481 | } | |
482 | } | |
483 | nla_nest_end(dcbnl_skb, nest); | |
484 | ||
485 | nlmsg_end(dcbnl_skb, nlh); | |
486 | ||
487 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
488 | if (ret) { | |
489 | ret = -EINVAL; | |
7eaf5077 | 490 | goto err_out; |
33dbabc4 AD |
491 | } |
492 | ||
493 | return 0; | |
494 | nlmsg_failure: | |
495 | err: | |
858eb711 | 496 | kfree_skb(dcbnl_skb); |
33dbabc4 AD |
497 | err_out: |
498 | return ret; | |
499 | } | |
500 | ||
501 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb, | |
502 | u32 pid, u32 seq, u16 flags) | |
503 | { | |
504 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; | |
505 | int ret = -EINVAL; | |
506 | u8 value; | |
507 | int i; | |
508 | ||
8b124a8e | 509 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs) |
33dbabc4 AD |
510 | return ret; |
511 | ||
512 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
513 | dcbnl_numtcs_nest); | |
514 | ||
515 | if (ret) { | |
516 | ret = -EINVAL; | |
517 | goto err; | |
518 | } | |
519 | ||
520 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
521 | if (data[i] == NULL) | |
522 | continue; | |
523 | ||
524 | value = nla_get_u8(data[i]); | |
525 | ||
526 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); | |
527 | ||
528 | if (ret) | |
529 | goto operr; | |
530 | } | |
531 | ||
532 | operr: | |
533 | ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS, | |
534 | DCB_ATTR_NUMTCS, pid, seq, flags); | |
535 | ||
536 | err: | |
537 | return ret; | |
538 | } | |
539 | ||
0eb3aa9b AD |
540 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb, |
541 | u32 pid, u32 seq, u16 flags) | |
542 | { | |
543 | int ret = -EINVAL; | |
544 | ||
545 | if (!netdev->dcbnl_ops->getpfcstate) | |
546 | return ret; | |
547 | ||
548 | ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB, | |
549 | DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE, | |
550 | pid, seq, flags); | |
551 | ||
552 | return ret; | |
553 | } | |
554 | ||
555 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb, | |
556 | u32 pid, u32 seq, u16 flags) | |
557 | { | |
558 | int ret = -EINVAL; | |
559 | u8 value; | |
560 | ||
561 | if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate) | |
562 | return ret; | |
563 | ||
564 | value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); | |
565 | ||
566 | netdev->dcbnl_ops->setpfcstate(netdev, value); | |
567 | ||
568 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE, | |
569 | pid, seq, flags); | |
570 | ||
571 | return ret; | |
572 | } | |
573 | ||
57949686 YZ |
574 | static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb, |
575 | u32 pid, u32 seq, u16 flags) | |
576 | { | |
577 | struct sk_buff *dcbnl_skb; | |
578 | struct nlmsghdr *nlh; | |
579 | struct dcbmsg *dcb; | |
580 | struct nlattr *app_nest; | |
581 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
582 | u16 id; | |
583 | u8 up, idtype; | |
584 | int ret = -EINVAL; | |
585 | ||
3dce38a0 | 586 | if (!tb[DCB_ATTR_APP]) |
57949686 YZ |
587 | goto out; |
588 | ||
589 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
590 | dcbnl_app_nest); | |
591 | if (ret) | |
592 | goto out; | |
593 | ||
594 | ret = -EINVAL; | |
595 | /* all must be non-null */ | |
596 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
597 | (!app_tb[DCB_APP_ATTR_ID])) | |
598 | goto out; | |
599 | ||
600 | /* either by eth type or by socket number */ | |
601 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
602 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
603 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
604 | goto out; | |
605 | ||
606 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
3dce38a0 JF |
607 | |
608 | if (netdev->dcbnl_ops->getapp) { | |
609 | up = netdev->dcbnl_ops->getapp(netdev, idtype, id); | |
610 | } else { | |
611 | struct dcb_app app = { | |
612 | .selector = idtype, | |
613 | .protocol = id, | |
614 | }; | |
615 | up = dcb_getapp(netdev, &app); | |
616 | } | |
57949686 YZ |
617 | |
618 | /* send this back */ | |
619 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
620 | if (!dcbnl_skb) | |
621 | goto out; | |
622 | ||
623 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
624 | dcb = NLMSG_DATA(nlh); | |
625 | dcb->dcb_family = AF_UNSPEC; | |
626 | dcb->cmd = DCB_CMD_GAPP; | |
627 | ||
628 | app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP); | |
d3337de5 JJ |
629 | if (!app_nest) |
630 | goto out_cancel; | |
631 | ||
57949686 YZ |
632 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype); |
633 | if (ret) | |
634 | goto out_cancel; | |
635 | ||
636 | ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id); | |
637 | if (ret) | |
638 | goto out_cancel; | |
639 | ||
640 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up); | |
641 | if (ret) | |
642 | goto out_cancel; | |
643 | ||
644 | nla_nest_end(dcbnl_skb, app_nest); | |
645 | nlmsg_end(dcbnl_skb, nlh); | |
646 | ||
647 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
648 | if (ret) | |
649 | goto nlmsg_failure; | |
650 | ||
651 | goto out; | |
652 | ||
653 | out_cancel: | |
654 | nla_nest_cancel(dcbnl_skb, app_nest); | |
655 | nlmsg_failure: | |
656 | kfree_skb(dcbnl_skb); | |
657 | out: | |
658 | return ret; | |
659 | } | |
660 | ||
661 | static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb, | |
662 | u32 pid, u32 seq, u16 flags) | |
663 | { | |
9ab933ab | 664 | int err, ret = -EINVAL; |
57949686 YZ |
665 | u16 id; |
666 | u8 up, idtype; | |
667 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
668 | ||
9ab933ab | 669 | if (!tb[DCB_ATTR_APP]) |
57949686 YZ |
670 | goto out; |
671 | ||
672 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
673 | dcbnl_app_nest); | |
674 | if (ret) | |
675 | goto out; | |
676 | ||
677 | ret = -EINVAL; | |
678 | /* all must be non-null */ | |
679 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
680 | (!app_tb[DCB_APP_ATTR_ID]) || | |
681 | (!app_tb[DCB_APP_ATTR_PRIORITY])) | |
682 | goto out; | |
683 | ||
684 | /* either by eth type or by socket number */ | |
685 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
686 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
687 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
688 | goto out; | |
689 | ||
690 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
691 | up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); | |
692 | ||
9ab933ab JF |
693 | if (netdev->dcbnl_ops->setapp) { |
694 | err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); | |
695 | } else { | |
696 | struct dcb_app app; | |
697 | app.selector = idtype; | |
698 | app.protocol = id; | |
699 | app.priority = up; | |
700 | err = dcb_setapp(netdev, &app); | |
701 | } | |
702 | ||
703 | ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP, | |
704 | pid, seq, flags); | |
57949686 YZ |
705 | out: |
706 | return ret; | |
707 | } | |
708 | ||
2f90b865 AD |
709 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb, |
710 | u32 pid, u32 seq, u16 flags, int dir) | |
711 | { | |
712 | struct sk_buff *dcbnl_skb; | |
713 | struct nlmsghdr *nlh; | |
714 | struct dcbmsg *dcb; | |
715 | struct nlattr *pg_nest, *param_nest, *data; | |
716 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
717 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
718 | u8 prio, pgid, tc_pct, up_map; | |
719 | int ret = -EINVAL; | |
720 | int getall = 0; | |
721 | int i; | |
722 | ||
723 | if (!tb[DCB_ATTR_PG_CFG] || | |
724 | !netdev->dcbnl_ops->getpgtccfgtx || | |
725 | !netdev->dcbnl_ops->getpgtccfgrx || | |
726 | !netdev->dcbnl_ops->getpgbwgcfgtx || | |
727 | !netdev->dcbnl_ops->getpgbwgcfgrx) | |
728 | return ret; | |
729 | ||
730 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, | |
731 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); | |
732 | ||
733 | if (ret) | |
734 | goto err_out; | |
735 | ||
736 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
737 | if (!dcbnl_skb) | |
738 | goto err_out; | |
739 | ||
740 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
741 | ||
742 | dcb = NLMSG_DATA(nlh); | |
743 | dcb->dcb_family = AF_UNSPEC; | |
744 | dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG; | |
745 | ||
746 | pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG); | |
747 | if (!pg_nest) | |
748 | goto err; | |
749 | ||
750 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
751 | getall = 1; | |
752 | ||
753 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
754 | if (!getall && !pg_tb[i]) | |
755 | continue; | |
756 | ||
757 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
758 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; | |
759 | else | |
760 | data = pg_tb[i]; | |
761 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, | |
762 | data, dcbnl_tc_param_nest); | |
763 | if (ret) | |
764 | goto err_pg; | |
765 | ||
766 | param_nest = nla_nest_start(dcbnl_skb, i); | |
767 | if (!param_nest) | |
768 | goto err_pg; | |
769 | ||
770 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
771 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
772 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
773 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
774 | ||
775 | if (dir) { | |
776 | /* Rx */ | |
777 | netdev->dcbnl_ops->getpgtccfgrx(netdev, | |
778 | i - DCB_PG_ATTR_TC_0, &prio, | |
779 | &pgid, &tc_pct, &up_map); | |
780 | } else { | |
781 | /* Tx */ | |
782 | netdev->dcbnl_ops->getpgtccfgtx(netdev, | |
783 | i - DCB_PG_ATTR_TC_0, &prio, | |
784 | &pgid, &tc_pct, &up_map); | |
785 | } | |
786 | ||
787 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || | |
788 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
789 | ret = nla_put_u8(dcbnl_skb, | |
790 | DCB_TC_ATTR_PARAM_PGID, pgid); | |
791 | if (ret) | |
792 | goto err_param; | |
793 | } | |
794 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || | |
795 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
796 | ret = nla_put_u8(dcbnl_skb, | |
797 | DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); | |
798 | if (ret) | |
799 | goto err_param; | |
800 | } | |
801 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || | |
802 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
803 | ret = nla_put_u8(dcbnl_skb, | |
804 | DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); | |
805 | if (ret) | |
806 | goto err_param; | |
807 | } | |
808 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || | |
809 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
810 | ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT, | |
811 | tc_pct); | |
812 | if (ret) | |
813 | goto err_param; | |
814 | } | |
815 | nla_nest_end(dcbnl_skb, param_nest); | |
816 | } | |
817 | ||
818 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) | |
819 | getall = 1; | |
820 | else | |
821 | getall = 0; | |
822 | ||
823 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
824 | if (!getall && !pg_tb[i]) | |
825 | continue; | |
826 | ||
827 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
828 | ||
829 | if (dir) { | |
830 | /* Rx */ | |
831 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, | |
832 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
833 | } else { | |
834 | /* Tx */ | |
835 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, | |
836 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
837 | } | |
838 | ret = nla_put_u8(dcbnl_skb, i, tc_pct); | |
839 | ||
840 | if (ret) | |
841 | goto err_pg; | |
842 | } | |
843 | ||
844 | nla_nest_end(dcbnl_skb, pg_nest); | |
845 | ||
846 | nlmsg_end(dcbnl_skb, nlh); | |
847 | ||
848 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
849 | if (ret) | |
7eaf5077 | 850 | goto err_out; |
2f90b865 AD |
851 | |
852 | return 0; | |
853 | ||
854 | err_param: | |
855 | nla_nest_cancel(dcbnl_skb, param_nest); | |
856 | err_pg: | |
857 | nla_nest_cancel(dcbnl_skb, pg_nest); | |
858 | nlmsg_failure: | |
859 | err: | |
858eb711 | 860 | kfree_skb(dcbnl_skb); |
2f90b865 AD |
861 | err_out: |
862 | ret = -EINVAL; | |
863 | return ret; | |
864 | } | |
865 | ||
866 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb, | |
867 | u32 pid, u32 seq, u16 flags) | |
868 | { | |
869 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0); | |
870 | } | |
871 | ||
872 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb, | |
873 | u32 pid, u32 seq, u16 flags) | |
874 | { | |
875 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1); | |
876 | } | |
877 | ||
878 | static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb, | |
879 | u32 pid, u32 seq, u16 flags) | |
880 | { | |
881 | int ret = -EINVAL; | |
882 | u8 value; | |
883 | ||
884 | if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate) | |
885 | return ret; | |
886 | ||
887 | value = nla_get_u8(tb[DCB_ATTR_STATE]); | |
888 | ||
1486a61e DS |
889 | ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value), |
890 | RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE, | |
2f90b865 AD |
891 | pid, seq, flags); |
892 | ||
893 | return ret; | |
894 | } | |
895 | ||
896 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb, | |
897 | u32 pid, u32 seq, u16 flags) | |
898 | { | |
899 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; | |
900 | int i; | |
901 | int ret = -EINVAL; | |
902 | u8 value; | |
903 | ||
904 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg) | |
905 | return ret; | |
906 | ||
907 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
908 | tb[DCB_ATTR_PFC_CFG], | |
909 | dcbnl_pfc_up_nest); | |
910 | if (ret) | |
911 | goto err; | |
912 | ||
913 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
914 | if (data[i] == NULL) | |
915 | continue; | |
916 | value = nla_get_u8(data[i]); | |
917 | netdev->dcbnl_ops->setpfccfg(netdev, | |
918 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); | |
919 | } | |
920 | ||
921 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG, | |
922 | pid, seq, flags); | |
923 | err: | |
924 | return ret; | |
925 | } | |
926 | ||
927 | static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb, | |
928 | u32 pid, u32 seq, u16 flags) | |
929 | { | |
930 | int ret = -EINVAL; | |
931 | ||
932 | if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall) | |
933 | return ret; | |
934 | ||
935 | ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB, | |
936 | DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags); | |
937 | ||
938 | return ret; | |
939 | } | |
940 | ||
941 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb, | |
942 | u32 pid, u32 seq, u16 flags, int dir) | |
943 | { | |
944 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
945 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
946 | int ret = -EINVAL; | |
947 | int i; | |
948 | u8 pgid; | |
949 | u8 up_map; | |
950 | u8 prio; | |
951 | u8 tc_pct; | |
952 | ||
953 | if (!tb[DCB_ATTR_PG_CFG] || | |
954 | !netdev->dcbnl_ops->setpgtccfgtx || | |
955 | !netdev->dcbnl_ops->setpgtccfgrx || | |
956 | !netdev->dcbnl_ops->setpgbwgcfgtx || | |
957 | !netdev->dcbnl_ops->setpgbwgcfgrx) | |
958 | return ret; | |
959 | ||
960 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, | |
961 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); | |
962 | if (ret) | |
963 | goto err; | |
964 | ||
965 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
966 | if (!pg_tb[i]) | |
967 | continue; | |
968 | ||
969 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, | |
970 | pg_tb[i], dcbnl_tc_param_nest); | |
971 | if (ret) | |
972 | goto err; | |
973 | ||
974 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
975 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
976 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
977 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
978 | ||
979 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) | |
980 | prio = | |
981 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); | |
982 | ||
983 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) | |
984 | pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); | |
985 | ||
986 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) | |
987 | tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); | |
988 | ||
989 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) | |
990 | up_map = | |
991 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); | |
992 | ||
993 | /* dir: Tx = 0, Rx = 1 */ | |
994 | if (dir) { | |
995 | /* Rx */ | |
996 | netdev->dcbnl_ops->setpgtccfgrx(netdev, | |
997 | i - DCB_PG_ATTR_TC_0, | |
998 | prio, pgid, tc_pct, up_map); | |
999 | } else { | |
1000 | /* Tx */ | |
1001 | netdev->dcbnl_ops->setpgtccfgtx(netdev, | |
1002 | i - DCB_PG_ATTR_TC_0, | |
1003 | prio, pgid, tc_pct, up_map); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
1008 | if (!pg_tb[i]) | |
1009 | continue; | |
1010 | ||
1011 | tc_pct = nla_get_u8(pg_tb[i]); | |
1012 | ||
1013 | /* dir: Tx = 0, Rx = 1 */ | |
1014 | if (dir) { | |
1015 | /* Rx */ | |
1016 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, | |
1017 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
1018 | } else { | |
1019 | /* Tx */ | |
1020 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, | |
1021 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | ret = dcbnl_reply(0, RTM_SETDCB, | |
1026 | (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), | |
1027 | DCB_ATTR_PG_CFG, pid, seq, flags); | |
1028 | ||
1029 | err: | |
1030 | return ret; | |
1031 | } | |
1032 | ||
1033 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1034 | u32 pid, u32 seq, u16 flags) | |
1035 | { | |
1036 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0); | |
1037 | } | |
1038 | ||
1039 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1040 | u32 pid, u32 seq, u16 flags) | |
1041 | { | |
1042 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1); | |
1043 | } | |
1044 | ||
859ee3c4 AD |
1045 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb, |
1046 | u32 pid, u32 seq, u16 flags) | |
1047 | { | |
1048 | struct sk_buff *dcbnl_skb; | |
1049 | struct nlmsghdr *nlh; | |
1050 | struct dcbmsg *dcb; | |
1051 | struct nlattr *bcn_nest; | |
1052 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; | |
1053 | u8 value_byte; | |
1054 | u32 value_integer; | |
1055 | int ret = -EINVAL; | |
1056 | bool getall = false; | |
1057 | int i; | |
1058 | ||
1059 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp || | |
1060 | !netdev->dcbnl_ops->getbcncfg) | |
1061 | return ret; | |
1062 | ||
1063 | ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX, | |
1064 | tb[DCB_ATTR_BCN], dcbnl_bcn_nest); | |
1065 | ||
1066 | if (ret) | |
1067 | goto err_out; | |
1068 | ||
1069 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1070 | if (!dcbnl_skb) | |
1071 | goto err_out; | |
1072 | ||
1073 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1074 | ||
1075 | dcb = NLMSG_DATA(nlh); | |
1076 | dcb->dcb_family = AF_UNSPEC; | |
1077 | dcb->cmd = DCB_CMD_BCN_GCFG; | |
1078 | ||
1079 | bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN); | |
1080 | if (!bcn_nest) | |
1081 | goto err; | |
1082 | ||
1083 | if (bcn_tb[DCB_BCN_ATTR_ALL]) | |
1084 | getall = true; | |
1085 | ||
1086 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
1087 | if (!getall && !bcn_tb[i]) | |
1088 | continue; | |
1089 | ||
1090 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, | |
1091 | &value_byte); | |
1092 | ret = nla_put_u8(dcbnl_skb, i, value_byte); | |
1093 | if (ret) | |
1094 | goto err_bcn; | |
1095 | } | |
1096 | ||
f4314e81 | 1097 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
1098 | if (!getall && !bcn_tb[i]) |
1099 | continue; | |
1100 | ||
1101 | netdev->dcbnl_ops->getbcncfg(netdev, i, | |
1102 | &value_integer); | |
1103 | ret = nla_put_u32(dcbnl_skb, i, value_integer); | |
1104 | if (ret) | |
1105 | goto err_bcn; | |
1106 | } | |
1107 | ||
1108 | nla_nest_end(dcbnl_skb, bcn_nest); | |
1109 | ||
1110 | nlmsg_end(dcbnl_skb, nlh); | |
1111 | ||
1112 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); | |
1113 | if (ret) | |
7eaf5077 | 1114 | goto err_out; |
859ee3c4 AD |
1115 | |
1116 | return 0; | |
1117 | ||
1118 | err_bcn: | |
1119 | nla_nest_cancel(dcbnl_skb, bcn_nest); | |
1120 | nlmsg_failure: | |
1121 | err: | |
858eb711 | 1122 | kfree_skb(dcbnl_skb); |
859ee3c4 AD |
1123 | err_out: |
1124 | ret = -EINVAL; | |
1125 | return ret; | |
1126 | } | |
1127 | ||
1128 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb, | |
1129 | u32 pid, u32 seq, u16 flags) | |
1130 | { | |
1131 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; | |
1132 | int i; | |
1133 | int ret = -EINVAL; | |
1134 | u8 value_byte; | |
1135 | u32 value_int; | |
1136 | ||
f64f9e71 JP |
1137 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg || |
1138 | !netdev->dcbnl_ops->setbcnrp) | |
859ee3c4 AD |
1139 | return ret; |
1140 | ||
1141 | ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX, | |
1142 | tb[DCB_ATTR_BCN], | |
1143 | dcbnl_pfc_up_nest); | |
1144 | if (ret) | |
1145 | goto err; | |
1146 | ||
1147 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
1148 | if (data[i] == NULL) | |
1149 | continue; | |
1150 | value_byte = nla_get_u8(data[i]); | |
1151 | netdev->dcbnl_ops->setbcnrp(netdev, | |
1152 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); | |
1153 | } | |
1154 | ||
f4314e81 | 1155 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
1156 | if (data[i] == NULL) |
1157 | continue; | |
1158 | value_int = nla_get_u32(data[i]); | |
1159 | netdev->dcbnl_ops->setbcncfg(netdev, | |
1160 | i, value_int); | |
1161 | } | |
1162 | ||
1163 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN, | |
1164 | pid, seq, flags); | |
1165 | err: | |
1166 | return ret; | |
1167 | } | |
1168 | ||
3e29027a JF |
1169 | /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not |
1170 | * be completed the entire msg is aborted and error value is returned. | |
1171 | * No attempt is made to reconcile the case where only part of the | |
1172 | * cmd can be completed. | |
1173 | */ | |
1174 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, | |
1175 | u32 pid, u32 seq, u16 flags) | |
1176 | { | |
1177 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1178 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; | |
1179 | int err = -EOPNOTSUPP; | |
1180 | ||
1181 | if (!ops) | |
1182 | goto err; | |
1183 | ||
1184 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, | |
1185 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); | |
1186 | if (err) | |
1187 | goto err; | |
1188 | ||
1189 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { | |
1190 | struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); | |
1191 | err = ops->ieee_setets(netdev, ets); | |
1192 | if (err) | |
1193 | goto err; | |
1194 | } | |
1195 | ||
f3d7bc57 | 1196 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
3e29027a JF |
1197 | struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); |
1198 | err = ops->ieee_setpfc(netdev, pfc); | |
1199 | if (err) | |
1200 | goto err; | |
1201 | } | |
1202 | ||
9ab933ab | 1203 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
3e29027a JF |
1204 | struct nlattr *attr; |
1205 | int rem; | |
1206 | ||
1207 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { | |
1208 | struct dcb_app *app_data; | |
1209 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) | |
1210 | continue; | |
1211 | app_data = nla_data(attr); | |
9ab933ab JF |
1212 | if (ops->ieee_setapp) |
1213 | err = ops->ieee_setapp(netdev, app_data); | |
1214 | else | |
1215 | err = dcb_setapp(netdev, app_data); | |
3e29027a JF |
1216 | if (err) |
1217 | goto err; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | err: | |
1222 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, | |
1223 | pid, seq, flags); | |
1224 | return err; | |
1225 | } | |
1226 | ||
dc6ed1df SR |
1227 | static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, |
1228 | int app_nested_type, int app_info_type, | |
1229 | int app_entry_type) | |
eed84713 SR |
1230 | { |
1231 | struct dcb_peer_app_info info; | |
1232 | struct dcb_app *table = NULL; | |
1233 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1234 | u16 app_count; | |
1235 | int err; | |
1236 | ||
1237 | ||
1238 | /** | |
1239 | * retrieve the peer app configuration form the driver. If the driver | |
1240 | * handlers fail exit without doing anything | |
1241 | */ | |
1242 | err = ops->peer_getappinfo(netdev, &info, &app_count); | |
1243 | if (!err && app_count) { | |
1244 | table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL); | |
1245 | if (!table) | |
1246 | return -ENOMEM; | |
1247 | ||
1248 | err = ops->peer_getapptable(netdev, table); | |
1249 | } | |
1250 | ||
1251 | if (!err) { | |
1252 | u16 i; | |
1253 | struct nlattr *app; | |
1254 | ||
1255 | /** | |
1256 | * build the message, from here on the only possible failure | |
1257 | * is due to the skb size | |
1258 | */ | |
1259 | err = -EMSGSIZE; | |
1260 | ||
dc6ed1df | 1261 | app = nla_nest_start(skb, app_nested_type); |
eed84713 SR |
1262 | if (!app) |
1263 | goto nla_put_failure; | |
1264 | ||
dc6ed1df SR |
1265 | if (app_info_type) |
1266 | NLA_PUT(skb, app_info_type, sizeof(info), &info); | |
1267 | ||
eed84713 | 1268 | for (i = 0; i < app_count; i++) |
dc6ed1df | 1269 | NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app), |
eed84713 SR |
1270 | &table[i]); |
1271 | ||
1272 | nla_nest_end(skb, app); | |
1273 | } | |
1274 | err = 0; | |
1275 | ||
1276 | nla_put_failure: | |
1277 | kfree(table); | |
1278 | return err; | |
1279 | } | |
3e29027a JF |
1280 | |
1281 | /* Handle IEEE 802.1Qaz GET commands. */ | |
1282 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, | |
1283 | u32 pid, u32 seq, u16 flags) | |
1284 | { | |
1285 | struct sk_buff *skb; | |
1286 | struct nlmsghdr *nlh; | |
1287 | struct dcbmsg *dcb; | |
9ab933ab JF |
1288 | struct nlattr *ieee, *app; |
1289 | struct dcb_app_type *itr; | |
3e29027a JF |
1290 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1291 | int err; | |
1292 | ||
1293 | if (!ops) | |
1294 | return -EOPNOTSUPP; | |
1295 | ||
1296 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1297 | if (!skb) | |
1298 | return -ENOBUFS; | |
1299 | ||
1300 | nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1301 | ||
1302 | dcb = NLMSG_DATA(nlh); | |
1303 | dcb->dcb_family = AF_UNSPEC; | |
1304 | dcb->cmd = DCB_CMD_IEEE_GET; | |
1305 | ||
1306 | NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); | |
1307 | ||
1308 | ieee = nla_nest_start(skb, DCB_ATTR_IEEE); | |
1309 | if (!ieee) | |
1310 | goto nla_put_failure; | |
1311 | ||
1312 | if (ops->ieee_getets) { | |
1313 | struct ieee_ets ets; | |
1314 | err = ops->ieee_getets(netdev, &ets); | |
1315 | if (!err) | |
1316 | NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets); | |
1317 | } | |
1318 | ||
1319 | if (ops->ieee_getpfc) { | |
1320 | struct ieee_pfc pfc; | |
1321 | err = ops->ieee_getpfc(netdev, &pfc); | |
1322 | if (!err) | |
1323 | NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc); | |
1324 | } | |
1325 | ||
9ab933ab JF |
1326 | app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE); |
1327 | if (!app) | |
1328 | goto nla_put_failure; | |
1329 | ||
1330 | spin_lock(&dcb_lock); | |
1331 | list_for_each_entry(itr, &dcb_app_list, list) { | |
70bfa2d2 DC |
1332 | if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) { |
1333 | err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app), | |
1334 | &itr->app); | |
1335 | if (err) { | |
1336 | spin_unlock(&dcb_lock); | |
1337 | goto nla_put_failure; | |
1338 | } | |
1339 | } | |
9ab933ab JF |
1340 | } |
1341 | spin_unlock(&dcb_lock); | |
1342 | nla_nest_end(skb, app); | |
1343 | ||
eed84713 SR |
1344 | /* get peer info if available */ |
1345 | if (ops->ieee_peer_getets) { | |
1346 | struct ieee_ets ets; | |
1347 | err = ops->ieee_peer_getets(netdev, &ets); | |
1348 | if (!err) | |
1349 | NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets); | |
1350 | } | |
1351 | ||
1352 | if (ops->ieee_peer_getpfc) { | |
1353 | struct ieee_pfc pfc; | |
1354 | err = ops->ieee_peer_getpfc(netdev, &pfc); | |
1355 | if (!err) | |
1356 | NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc); | |
1357 | } | |
1358 | ||
1359 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
dc6ed1df SR |
1360 | err = dcbnl_build_peer_app(netdev, skb, |
1361 | DCB_ATTR_IEEE_PEER_APP, | |
1362 | DCB_ATTR_IEEE_APP_UNSPEC, | |
1363 | DCB_ATTR_IEEE_APP); | |
eed84713 SR |
1364 | if (err) |
1365 | goto nla_put_failure; | |
1366 | } | |
1367 | ||
3e29027a JF |
1368 | nla_nest_end(skb, ieee); |
1369 | nlmsg_end(skb, nlh); | |
1370 | ||
1371 | return rtnl_unicast(skb, &init_net, pid); | |
1372 | nla_put_failure: | |
1373 | nlmsg_cancel(skb, nlh); | |
1374 | nlmsg_failure: | |
1375 | kfree_skb(skb); | |
1376 | return -1; | |
1377 | } | |
1378 | ||
6241b625 SR |
1379 | /* DCBX configuration */ |
1380 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb, | |
1381 | u32 pid, u32 seq, u16 flags) | |
1382 | { | |
7f891cf1 | 1383 | int ret; |
6241b625 SR |
1384 | |
1385 | if (!netdev->dcbnl_ops->getdcbx) | |
7f891cf1 | 1386 | return -EOPNOTSUPP; |
6241b625 SR |
1387 | |
1388 | ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB, | |
1389 | DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags); | |
1390 | ||
1391 | return ret; | |
1392 | } | |
1393 | ||
1394 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb, | |
1395 | u32 pid, u32 seq, u16 flags) | |
1396 | { | |
7f891cf1 | 1397 | int ret; |
6241b625 SR |
1398 | u8 value; |
1399 | ||
7f891cf1 SR |
1400 | if (!netdev->dcbnl_ops->setdcbx) |
1401 | return -EOPNOTSUPP; | |
1402 | ||
1403 | if (!tb[DCB_ATTR_DCBX]) | |
1404 | return -EINVAL; | |
6241b625 SR |
1405 | |
1406 | value = nla_get_u8(tb[DCB_ATTR_DCBX]); | |
1407 | ||
1408 | ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value), | |
1409 | RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX, | |
1410 | pid, seq, flags); | |
1411 | ||
1412 | return ret; | |
1413 | } | |
1414 | ||
ea45fe4e SR |
1415 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb, |
1416 | u32 pid, u32 seq, u16 flags) | |
1417 | { | |
1418 | struct sk_buff *dcbnl_skb; | |
1419 | struct nlmsghdr *nlh; | |
1420 | struct dcbmsg *dcb; | |
1421 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; | |
1422 | u8 value; | |
7f891cf1 | 1423 | int ret, i; |
ea45fe4e SR |
1424 | int getall = 0; |
1425 | ||
7f891cf1 SR |
1426 | if (!netdev->dcbnl_ops->getfeatcfg) |
1427 | return -EOPNOTSUPP; | |
1428 | ||
1429 | if (!tb[DCB_ATTR_FEATCFG]) | |
1430 | return -EINVAL; | |
ea45fe4e SR |
1431 | |
1432 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], | |
1433 | dcbnl_featcfg_nest); | |
7f891cf1 | 1434 | if (ret) |
ea45fe4e | 1435 | goto err_out; |
ea45fe4e SR |
1436 | |
1437 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1438 | if (!dcbnl_skb) { | |
7f891cf1 | 1439 | ret = -ENOBUFS; |
ea45fe4e SR |
1440 | goto err_out; |
1441 | } | |
1442 | ||
1443 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1444 | ||
1445 | dcb = NLMSG_DATA(nlh); | |
1446 | dcb->dcb_family = AF_UNSPEC; | |
1447 | dcb->cmd = DCB_CMD_GFEATCFG; | |
1448 | ||
1449 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG); | |
1450 | if (!nest) { | |
7f891cf1 SR |
1451 | ret = -EMSGSIZE; |
1452 | goto nla_put_failure; | |
ea45fe4e SR |
1453 | } |
1454 | ||
1455 | if (data[DCB_FEATCFG_ATTR_ALL]) | |
1456 | getall = 1; | |
1457 | ||
1458 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1459 | if (!getall && !data[i]) | |
1460 | continue; | |
1461 | ||
1462 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); | |
7f891cf1 | 1463 | if (!ret) |
ea45fe4e SR |
1464 | ret = nla_put_u8(dcbnl_skb, i, value); |
1465 | ||
7f891cf1 SR |
1466 | if (ret) { |
1467 | nla_nest_cancel(dcbnl_skb, nest); | |
1468 | goto nla_put_failure; | |
1469 | } | |
ea45fe4e SR |
1470 | } |
1471 | nla_nest_end(dcbnl_skb, nest); | |
1472 | ||
1473 | nlmsg_end(dcbnl_skb, nlh); | |
1474 | ||
7f891cf1 SR |
1475 | return rtnl_unicast(dcbnl_skb, &init_net, pid); |
1476 | nla_put_failure: | |
1477 | nlmsg_cancel(dcbnl_skb, nlh); | |
ea45fe4e | 1478 | nlmsg_failure: |
ea45fe4e SR |
1479 | kfree_skb(dcbnl_skb); |
1480 | err_out: | |
1481 | return ret; | |
1482 | } | |
1483 | ||
1484 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb, | |
1485 | u32 pid, u32 seq, u16 flags) | |
1486 | { | |
1487 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; | |
7f891cf1 | 1488 | int ret, i; |
ea45fe4e | 1489 | u8 value; |
ea45fe4e | 1490 | |
7f891cf1 SR |
1491 | if (!netdev->dcbnl_ops->setfeatcfg) |
1492 | return -ENOTSUPP; | |
1493 | ||
1494 | if (!tb[DCB_ATTR_FEATCFG]) | |
1495 | return -EINVAL; | |
ea45fe4e SR |
1496 | |
1497 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], | |
1498 | dcbnl_featcfg_nest); | |
1499 | ||
7f891cf1 | 1500 | if (ret) |
ea45fe4e | 1501 | goto err; |
ea45fe4e SR |
1502 | |
1503 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1504 | if (data[i] == NULL) | |
1505 | continue; | |
1506 | ||
1507 | value = nla_get_u8(data[i]); | |
1508 | ||
1509 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); | |
1510 | ||
1511 | if (ret) | |
7f891cf1 | 1512 | goto err; |
ea45fe4e | 1513 | } |
ea45fe4e | 1514 | err: |
7f891cf1 SR |
1515 | dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG, |
1516 | pid, seq, flags); | |
1517 | ||
ea45fe4e SR |
1518 | return ret; |
1519 | } | |
1520 | ||
dc6ed1df SR |
1521 | /* Handle CEE DCBX GET commands. */ |
1522 | static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb, | |
1523 | u32 pid, u32 seq, u16 flags) | |
1524 | { | |
1525 | struct sk_buff *skb; | |
1526 | struct nlmsghdr *nlh; | |
1527 | struct dcbmsg *dcb; | |
1528 | struct nlattr *cee; | |
1529 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1530 | int err; | |
1531 | ||
1532 | if (!ops) | |
1533 | return -EOPNOTSUPP; | |
1534 | ||
1535 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1536 | if (!skb) | |
1537 | return -ENOBUFS; | |
1538 | ||
1539 | nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); | |
1540 | ||
1541 | dcb = NLMSG_DATA(nlh); | |
1542 | dcb->dcb_family = AF_UNSPEC; | |
1543 | dcb->cmd = DCB_CMD_CEE_GET; | |
1544 | ||
1545 | NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); | |
1546 | ||
1547 | cee = nla_nest_start(skb, DCB_ATTR_CEE); | |
1548 | if (!cee) | |
1549 | goto nla_put_failure; | |
1550 | ||
1551 | /* get peer info if available */ | |
1552 | if (ops->cee_peer_getpg) { | |
1553 | struct cee_pg pg; | |
1554 | err = ops->cee_peer_getpg(netdev, &pg); | |
1555 | if (!err) | |
1556 | NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg); | |
1557 | } | |
1558 | ||
1559 | if (ops->cee_peer_getpfc) { | |
1560 | struct cee_pfc pfc; | |
1561 | err = ops->cee_peer_getpfc(netdev, &pfc); | |
1562 | if (!err) | |
1563 | NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc); | |
1564 | } | |
1565 | ||
1566 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
1567 | err = dcbnl_build_peer_app(netdev, skb, | |
1568 | DCB_ATTR_CEE_PEER_APP_TABLE, | |
1569 | DCB_ATTR_CEE_PEER_APP_INFO, | |
1570 | DCB_ATTR_CEE_PEER_APP); | |
1571 | if (err) | |
1572 | goto nla_put_failure; | |
1573 | } | |
1574 | ||
1575 | nla_nest_end(skb, cee); | |
1576 | nlmsg_end(skb, nlh); | |
1577 | ||
1578 | return rtnl_unicast(skb, &init_net, pid); | |
1579 | nla_put_failure: | |
1580 | nlmsg_cancel(skb, nlh); | |
1581 | nlmsg_failure: | |
1582 | kfree_skb(skb); | |
1583 | return -1; | |
1584 | } | |
1585 | ||
2f90b865 AD |
1586 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1587 | { | |
1588 | struct net *net = sock_net(skb->sk); | |
1589 | struct net_device *netdev; | |
1590 | struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh); | |
1591 | struct nlattr *tb[DCB_ATTR_MAX + 1]; | |
1592 | u32 pid = skb ? NETLINK_CB(skb).pid : 0; | |
1593 | int ret = -EINVAL; | |
1594 | ||
09ad9bc7 | 1595 | if (!net_eq(net, &init_net)) |
2f90b865 AD |
1596 | return -EINVAL; |
1597 | ||
1598 | ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, | |
1599 | dcbnl_rtnl_policy); | |
1600 | if (ret < 0) | |
1601 | return ret; | |
1602 | ||
1603 | if (!tb[DCB_ATTR_IFNAME]) | |
1604 | return -EINVAL; | |
1605 | ||
1606 | netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME])); | |
1607 | if (!netdev) | |
1608 | return -EINVAL; | |
1609 | ||
1610 | if (!netdev->dcbnl_ops) | |
1611 | goto errout; | |
1612 | ||
1613 | switch (dcb->cmd) { | |
1614 | case DCB_CMD_GSTATE: | |
1615 | ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq, | |
1616 | nlh->nlmsg_flags); | |
1617 | goto out; | |
1618 | case DCB_CMD_PFC_GCFG: | |
1619 | ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1620 | nlh->nlmsg_flags); | |
1621 | goto out; | |
1622 | case DCB_CMD_GPERM_HWADDR: | |
1623 | ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq, | |
1624 | nlh->nlmsg_flags); | |
1625 | goto out; | |
1626 | case DCB_CMD_PGTX_GCFG: | |
1627 | ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1628 | nlh->nlmsg_flags); | |
1629 | goto out; | |
1630 | case DCB_CMD_PGRX_GCFG: | |
1631 | ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1632 | nlh->nlmsg_flags); | |
1633 | goto out; | |
859ee3c4 AD |
1634 | case DCB_CMD_BCN_GCFG: |
1635 | ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1636 | nlh->nlmsg_flags); | |
1637 | goto out; | |
2f90b865 AD |
1638 | case DCB_CMD_SSTATE: |
1639 | ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq, | |
1640 | nlh->nlmsg_flags); | |
1641 | goto out; | |
1642 | case DCB_CMD_PFC_SCFG: | |
1643 | ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1644 | nlh->nlmsg_flags); | |
1645 | goto out; | |
1646 | ||
1647 | case DCB_CMD_SET_ALL: | |
1648 | ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq, | |
1649 | nlh->nlmsg_flags); | |
1650 | goto out; | |
1651 | case DCB_CMD_PGTX_SCFG: | |
1652 | ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1653 | nlh->nlmsg_flags); | |
1654 | goto out; | |
1655 | case DCB_CMD_PGRX_SCFG: | |
1656 | ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1657 | nlh->nlmsg_flags); | |
1658 | goto out; | |
46132188 AD |
1659 | case DCB_CMD_GCAP: |
1660 | ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq, | |
1661 | nlh->nlmsg_flags); | |
1662 | goto out; | |
33dbabc4 AD |
1663 | case DCB_CMD_GNUMTCS: |
1664 | ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq, | |
1665 | nlh->nlmsg_flags); | |
1666 | goto out; | |
1667 | case DCB_CMD_SNUMTCS: | |
1668 | ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq, | |
1669 | nlh->nlmsg_flags); | |
1670 | goto out; | |
0eb3aa9b AD |
1671 | case DCB_CMD_PFC_GSTATE: |
1672 | ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq, | |
1673 | nlh->nlmsg_flags); | |
1674 | goto out; | |
1675 | case DCB_CMD_PFC_SSTATE: | |
1676 | ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq, | |
1677 | nlh->nlmsg_flags); | |
1678 | goto out; | |
859ee3c4 AD |
1679 | case DCB_CMD_BCN_SCFG: |
1680 | ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1681 | nlh->nlmsg_flags); | |
1682 | goto out; | |
57949686 YZ |
1683 | case DCB_CMD_GAPP: |
1684 | ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq, | |
1685 | nlh->nlmsg_flags); | |
1686 | goto out; | |
1687 | case DCB_CMD_SAPP: | |
1688 | ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq, | |
1689 | nlh->nlmsg_flags); | |
1690 | goto out; | |
3e29027a JF |
1691 | case DCB_CMD_IEEE_SET: |
1692 | ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq, | |
1693 | nlh->nlmsg_flags); | |
1694 | goto out; | |
1695 | case DCB_CMD_IEEE_GET: | |
1696 | ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq, | |
1697 | nlh->nlmsg_flags); | |
1698 | goto out; | |
6241b625 SR |
1699 | case DCB_CMD_GDCBX: |
1700 | ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq, | |
1701 | nlh->nlmsg_flags); | |
1702 | goto out; | |
1703 | case DCB_CMD_SDCBX: | |
1704 | ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq, | |
1705 | nlh->nlmsg_flags); | |
1706 | goto out; | |
ea45fe4e SR |
1707 | case DCB_CMD_GFEATCFG: |
1708 | ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1709 | nlh->nlmsg_flags); | |
1710 | goto out; | |
1711 | case DCB_CMD_SFEATCFG: | |
1712 | ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, | |
1713 | nlh->nlmsg_flags); | |
1714 | goto out; | |
dc6ed1df SR |
1715 | case DCB_CMD_CEE_GET: |
1716 | ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq, | |
1717 | nlh->nlmsg_flags); | |
1718 | goto out; | |
2f90b865 AD |
1719 | default: |
1720 | goto errout; | |
1721 | } | |
1722 | errout: | |
1723 | ret = -EINVAL; | |
1724 | out: | |
1725 | dev_put(netdev); | |
1726 | return ret; | |
1727 | } | |
1728 | ||
9ab933ab JF |
1729 | /** |
1730 | * dcb_getapp - retrieve the DCBX application user priority | |
1731 | * | |
1732 | * On success returns a non-zero 802.1p user priority bitmap | |
1733 | * otherwise returns 0 as the invalid user priority bitmap to | |
1734 | * indicate an error. | |
1735 | */ | |
1736 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) | |
1737 | { | |
1738 | struct dcb_app_type *itr; | |
1739 | u8 prio = 0; | |
1740 | ||
1741 | spin_lock(&dcb_lock); | |
1742 | list_for_each_entry(itr, &dcb_app_list, list) { | |
1743 | if (itr->app.selector == app->selector && | |
1744 | itr->app.protocol == app->protocol && | |
1745 | (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) { | |
1746 | prio = itr->app.priority; | |
1747 | break; | |
1748 | } | |
1749 | } | |
1750 | spin_unlock(&dcb_lock); | |
1751 | ||
1752 | return prio; | |
1753 | } | |
1754 | EXPORT_SYMBOL(dcb_getapp); | |
1755 | ||
1756 | /** | |
1757 | * ixgbe_dcbnl_setapp - add dcb application data to app list | |
1758 | * | |
1759 | * Priority 0 is the default priority this removes applications | |
1760 | * from the app list if the priority is set to zero. | |
1761 | */ | |
1762 | u8 dcb_setapp(struct net_device *dev, struct dcb_app *new) | |
1763 | { | |
1764 | struct dcb_app_type *itr; | |
7ec79270 JF |
1765 | struct dcb_app_type event; |
1766 | ||
1767 | memcpy(&event.name, dev->name, sizeof(event.name)); | |
1768 | memcpy(&event.app, new, sizeof(event.app)); | |
9ab933ab JF |
1769 | |
1770 | spin_lock(&dcb_lock); | |
1771 | /* Search for existing match and replace */ | |
1772 | list_for_each_entry(itr, &dcb_app_list, list) { | |
1773 | if (itr->app.selector == new->selector && | |
1774 | itr->app.protocol == new->protocol && | |
1775 | (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) { | |
1776 | if (new->priority) | |
1777 | itr->app.priority = new->priority; | |
1778 | else { | |
1779 | list_del(&itr->list); | |
1780 | kfree(itr); | |
1781 | } | |
1782 | goto out; | |
1783 | } | |
1784 | } | |
1785 | /* App type does not exist add new application type */ | |
1786 | if (new->priority) { | |
1787 | struct dcb_app_type *entry; | |
1788 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); | |
1789 | if (!entry) { | |
1790 | spin_unlock(&dcb_lock); | |
1791 | return -ENOMEM; | |
1792 | } | |
1793 | ||
1794 | memcpy(&entry->app, new, sizeof(*new)); | |
1795 | strncpy(entry->name, dev->name, IFNAMSIZ); | |
1796 | list_add(&entry->list, &dcb_app_list); | |
1797 | } | |
1798 | out: | |
1799 | spin_unlock(&dcb_lock); | |
7ec79270 | 1800 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
9ab933ab JF |
1801 | return 0; |
1802 | } | |
1803 | EXPORT_SYMBOL(dcb_setapp); | |
1804 | ||
7c14c3f1 | 1805 | static void dcb_flushapp(void) |
9ab933ab JF |
1806 | { |
1807 | struct dcb_app_type *app; | |
2a8fe003 | 1808 | struct dcb_app_type *tmp; |
9ab933ab JF |
1809 | |
1810 | spin_lock(&dcb_lock); | |
2a8fe003 | 1811 | list_for_each_entry_safe(app, tmp, &dcb_app_list, list) { |
9ab933ab JF |
1812 | list_del(&app->list); |
1813 | kfree(app); | |
1814 | } | |
1815 | spin_unlock(&dcb_lock); | |
1816 | } | |
1817 | ||
2f90b865 AD |
1818 | static int __init dcbnl_init(void) |
1819 | { | |
9ab933ab JF |
1820 | INIT_LIST_HEAD(&dcb_app_list); |
1821 | ||
c7ac8679 GR |
1822 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL); |
1823 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL); | |
2f90b865 AD |
1824 | |
1825 | return 0; | |
1826 | } | |
1827 | module_init(dcbnl_init); | |
1828 | ||
1829 | static void __exit dcbnl_exit(void) | |
1830 | { | |
1831 | rtnl_unregister(PF_UNSPEC, RTM_GETDCB); | |
1832 | rtnl_unregister(PF_UNSPEC, RTM_SETDCB); | |
9ab933ab | 1833 | dcb_flushapp(); |
2f90b865 AD |
1834 | } |
1835 | module_exit(dcbnl_exit); |