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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 | |
c057b190 | 14 | * this program; if not, see <http://www.gnu.org/licenses/>. |
2f90b865 | 15 | * |
36b9ad80 | 16 | * Description: Data Center Bridging netlink interface |
2f90b865 AD |
17 | * Author: Lucy Liu <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> |
36b9ad80 | 28 | #include <linux/init.h> |
2f90b865 AD |
29 | #include <net/sock.h> |
30 | ||
ae86b9e3 | 31 | /* Data Center Bridging (DCB) is a collection of Ethernet enhancements |
2f90b865 AD |
32 | * intended to allow network traffic with differing requirements |
33 | * (highly reliable, no drops vs. best effort vs. low latency) to operate | |
34 | * and co-exist on Ethernet. Current DCB features are: | |
35 | * | |
36 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a | |
37 | * framework for assigning bandwidth guarantees to traffic classes. | |
38 | * | |
39 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which | |
40 | * can work independently for each 802.1p priority. | |
41 | * | |
42 | * Congestion Notification - provides a mechanism for end-to-end congestion | |
43 | * control for protocols which do not have built-in congestion management. | |
44 | * | |
45 | * More information about the emerging standards for these Ethernet features | |
46 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html | |
47 | * | |
48 | * This file implements an rtnetlink interface to allow configuration of DCB | |
49 | * features for capable devices. | |
50 | */ | |
51 | ||
2f90b865 AD |
52 | /**************** DCB attribute policies *************************************/ |
53 | ||
54 | /* DCB netlink attributes policy */ | |
b54452b0 | 55 | static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { |
859ee3c4 AD |
56 | [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, |
57 | [DCB_ATTR_STATE] = {.type = NLA_U8}, | |
58 | [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, | |
59 | [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, | |
60 | [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, | |
2f90b865 | 61 | [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, |
859ee3c4 AD |
62 | [DCB_ATTR_CAP] = {.type = NLA_NESTED}, |
63 | [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, | |
64 | [DCB_ATTR_BCN] = {.type = NLA_NESTED}, | |
6fa382af | 65 | [DCB_ATTR_APP] = {.type = NLA_NESTED}, |
3e29027a | 66 | [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, |
6241b625 | 67 | [DCB_ATTR_DCBX] = {.type = NLA_U8}, |
ea45fe4e | 68 | [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, |
2f90b865 AD |
69 | }; |
70 | ||
71 | /* DCB priority flow control to User Priority nested attributes */ | |
b54452b0 | 72 | static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = { |
2f90b865 AD |
73 | [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, |
74 | [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, | |
75 | [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, | |
76 | [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, | |
77 | [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, | |
78 | [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, | |
79 | [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, | |
80 | [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, | |
81 | [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, | |
82 | }; | |
83 | ||
84 | /* DCB priority grouping nested attributes */ | |
b54452b0 | 85 | static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = { |
2f90b865 AD |
86 | [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, |
87 | [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, | |
88 | [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, | |
89 | [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, | |
90 | [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, | |
91 | [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, | |
92 | [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, | |
93 | [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, | |
94 | [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, | |
95 | [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, | |
96 | [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, | |
97 | [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, | |
98 | [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, | |
99 | [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, | |
100 | [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, | |
101 | [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, | |
102 | [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, | |
103 | [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, | |
104 | }; | |
105 | ||
106 | /* DCB traffic class nested attributes. */ | |
b54452b0 | 107 | static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = { |
2f90b865 AD |
108 | [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, |
109 | [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, | |
110 | [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, | |
111 | [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, | |
112 | [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, | |
113 | }; | |
114 | ||
46132188 | 115 | /* DCB capabilities nested attributes. */ |
b54452b0 | 116 | static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = { |
46132188 AD |
117 | [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, |
118 | [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, | |
119 | [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, | |
120 | [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, | |
121 | [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, | |
122 | [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, | |
123 | [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, | |
124 | [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, | |
6241b625 | 125 | [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, |
46132188 | 126 | }; |
2f90b865 | 127 | |
33dbabc4 | 128 | /* DCB capabilities nested attributes. */ |
b54452b0 | 129 | static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = { |
33dbabc4 AD |
130 | [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, |
131 | [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, | |
132 | [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, | |
133 | }; | |
134 | ||
859ee3c4 | 135 | /* DCB BCN nested attributes. */ |
b54452b0 | 136 | static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = { |
859ee3c4 AD |
137 | [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, |
138 | [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, | |
139 | [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, | |
140 | [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, | |
141 | [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, | |
142 | [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, | |
143 | [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, | |
144 | [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, | |
145 | [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, | |
f4314e81 DS |
146 | [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, |
147 | [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, | |
859ee3c4 AD |
148 | [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, |
149 | [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, | |
150 | [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, | |
151 | [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, | |
152 | [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, | |
153 | [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, | |
154 | [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, | |
155 | [DCB_BCN_ATTR_W] = {.type = NLA_U32}, | |
156 | [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, | |
157 | [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, | |
158 | [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, | |
159 | [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, | |
160 | [DCB_BCN_ATTR_C] = {.type = NLA_U32}, | |
161 | [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, | |
162 | }; | |
163 | ||
6fa382af | 164 | /* DCB APP nested attributes. */ |
b54452b0 | 165 | static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { |
6fa382af YZ |
166 | [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, |
167 | [DCB_APP_ATTR_ID] = {.type = NLA_U16}, | |
168 | [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, | |
169 | }; | |
170 | ||
3e29027a JF |
171 | /* IEEE 802.1Qaz nested attributes. */ |
172 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { | |
173 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, | |
174 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, | |
175 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, | |
08f10aff | 176 | [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)}, |
c9368247 SM |
177 | [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)}, |
178 | [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)}, | |
3e29027a JF |
179 | }; |
180 | ||
ea45fe4e SR |
181 | /* DCB number of traffic classes nested attributes. */ |
182 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { | |
183 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, | |
184 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, | |
185 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, | |
186 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, | |
187 | }; | |
188 | ||
9ab933ab JF |
189 | static LIST_HEAD(dcb_app_list); |
190 | static DEFINE_SPINLOCK(dcb_lock); | |
191 | ||
33a03aad TG |
192 | static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq, |
193 | u32 flags, struct nlmsghdr **nlhp) | |
194 | { | |
195 | struct sk_buff *skb; | |
196 | struct dcbmsg *dcb; | |
197 | struct nlmsghdr *nlh; | |
198 | ||
199 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
200 | if (!skb) | |
201 | return NULL; | |
202 | ||
203 | nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags); | |
b3908e22 | 204 | BUG_ON(!nlh); |
33a03aad TG |
205 | |
206 | dcb = nlmsg_data(nlh); | |
207 | dcb->dcb_family = AF_UNSPEC; | |
208 | dcb->cmd = cmd; | |
209 | dcb->dcb_pad = 0; | |
210 | ||
211 | if (nlhp) | |
212 | *nlhp = nlh; | |
213 | ||
214 | return skb; | |
215 | } | |
216 | ||
7be99413 TG |
217 | static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh, |
218 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 219 | { |
2f90b865 AD |
220 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ |
221 | if (!netdev->dcbnl_ops->getstate) | |
3d1f4869 | 222 | return -EOPNOTSUPP; |
2f90b865 | 223 | |
7be99413 TG |
224 | return nla_put_u8(skb, DCB_ATTR_STATE, |
225 | netdev->dcbnl_ops->getstate(netdev)); | |
2f90b865 AD |
226 | } |
227 | ||
7be99413 TG |
228 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, |
229 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 230 | { |
2f90b865 AD |
231 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; |
232 | u8 value; | |
3d1f4869 | 233 | int ret; |
2f90b865 AD |
234 | int i; |
235 | int getall = 0; | |
236 | ||
3d1f4869 TG |
237 | if (!tb[DCB_ATTR_PFC_CFG]) |
238 | return -EINVAL; | |
239 | ||
240 | if (!netdev->dcbnl_ops->getpfccfg) | |
241 | return -EOPNOTSUPP; | |
2f90b865 AD |
242 | |
243 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
fceb6435 | 244 | tb[DCB_ATTR_PFC_CFG], dcbnl_pfc_up_nest, NULL); |
2f90b865 | 245 | if (ret) |
3d1f4869 | 246 | return ret; |
2f90b865 | 247 | |
7be99413 | 248 | nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG); |
2f90b865 | 249 | if (!nest) |
3d1f4869 | 250 | return -EMSGSIZE; |
2f90b865 AD |
251 | |
252 | if (data[DCB_PFC_UP_ATTR_ALL]) | |
253 | getall = 1; | |
254 | ||
255 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
256 | if (!getall && !data[i]) | |
257 | continue; | |
258 | ||
259 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, | |
260 | &value); | |
7be99413 | 261 | ret = nla_put_u8(skb, i, value); |
2f90b865 | 262 | if (ret) { |
7be99413 | 263 | nla_nest_cancel(skb, nest); |
3d1f4869 | 264 | return ret; |
2f90b865 AD |
265 | } |
266 | } | |
7be99413 | 267 | nla_nest_end(skb, nest); |
2f90b865 AD |
268 | |
269 | return 0; | |
2f90b865 AD |
270 | } |
271 | ||
7be99413 TG |
272 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh, |
273 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 274 | { |
2f90b865 | 275 | u8 perm_addr[MAX_ADDR_LEN]; |
2f90b865 AD |
276 | |
277 | if (!netdev->dcbnl_ops->getpermhwaddr) | |
3d1f4869 | 278 | return -EOPNOTSUPP; |
2f90b865 | 279 | |
29cd8ae0 | 280 | memset(perm_addr, 0, sizeof(perm_addr)); |
2f90b865 AD |
281 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); |
282 | ||
7be99413 | 283 | return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr); |
2f90b865 AD |
284 | } |
285 | ||
7be99413 TG |
286 | static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh, |
287 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
46132188 | 288 | { |
46132188 AD |
289 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; |
290 | u8 value; | |
3d1f4869 | 291 | int ret; |
46132188 AD |
292 | int i; |
293 | int getall = 0; | |
294 | ||
3d1f4869 TG |
295 | if (!tb[DCB_ATTR_CAP]) |
296 | return -EINVAL; | |
297 | ||
298 | if (!netdev->dcbnl_ops->getcap) | |
299 | return -EOPNOTSUPP; | |
46132188 AD |
300 | |
301 | ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], | |
fceb6435 | 302 | dcbnl_cap_nest, NULL); |
46132188 | 303 | if (ret) |
3d1f4869 | 304 | return ret; |
46132188 | 305 | |
7be99413 | 306 | nest = nla_nest_start(skb, DCB_ATTR_CAP); |
46132188 | 307 | if (!nest) |
3d1f4869 | 308 | return -EMSGSIZE; |
46132188 AD |
309 | |
310 | if (data[DCB_CAP_ATTR_ALL]) | |
311 | getall = 1; | |
312 | ||
313 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { | |
314 | if (!getall && !data[i]) | |
315 | continue; | |
316 | ||
317 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { | |
7be99413 | 318 | ret = nla_put_u8(skb, i, value); |
46132188 | 319 | if (ret) { |
7be99413 | 320 | nla_nest_cancel(skb, nest); |
3d1f4869 | 321 | return ret; |
46132188 AD |
322 | } |
323 | } | |
324 | } | |
7be99413 | 325 | nla_nest_end(skb, nest); |
46132188 AD |
326 | |
327 | return 0; | |
46132188 AD |
328 | } |
329 | ||
7be99413 TG |
330 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, |
331 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
33dbabc4 | 332 | { |
33dbabc4 AD |
333 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; |
334 | u8 value; | |
3d1f4869 | 335 | int ret; |
33dbabc4 AD |
336 | int i; |
337 | int getall = 0; | |
338 | ||
3d1f4869 TG |
339 | if (!tb[DCB_ATTR_NUMTCS]) |
340 | return -EINVAL; | |
341 | ||
342 | if (!netdev->dcbnl_ops->getnumtcs) | |
343 | return -EOPNOTSUPP; | |
33dbabc4 AD |
344 | |
345 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
fceb6435 | 346 | dcbnl_numtcs_nest, NULL); |
3d1f4869 TG |
347 | if (ret) |
348 | return ret; | |
33dbabc4 | 349 | |
7be99413 | 350 | nest = nla_nest_start(skb, DCB_ATTR_NUMTCS); |
3d1f4869 TG |
351 | if (!nest) |
352 | return -EMSGSIZE; | |
33dbabc4 AD |
353 | |
354 | if (data[DCB_NUMTCS_ATTR_ALL]) | |
355 | getall = 1; | |
356 | ||
357 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
358 | if (!getall && !data[i]) | |
359 | continue; | |
360 | ||
361 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); | |
362 | if (!ret) { | |
7be99413 | 363 | ret = nla_put_u8(skb, i, value); |
33dbabc4 | 364 | if (ret) { |
7be99413 | 365 | nla_nest_cancel(skb, nest); |
3d1f4869 | 366 | return ret; |
33dbabc4 | 367 | } |
3d1f4869 TG |
368 | } else |
369 | return -EINVAL; | |
33dbabc4 | 370 | } |
7be99413 | 371 | nla_nest_end(skb, nest); |
33dbabc4 AD |
372 | |
373 | return 0; | |
33dbabc4 AD |
374 | } |
375 | ||
7be99413 TG |
376 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, |
377 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
33dbabc4 AD |
378 | { |
379 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; | |
3d1f4869 | 380 | int ret; |
33dbabc4 AD |
381 | u8 value; |
382 | int i; | |
383 | ||
3d1f4869 TG |
384 | if (!tb[DCB_ATTR_NUMTCS]) |
385 | return -EINVAL; | |
386 | ||
387 | if (!netdev->dcbnl_ops->setnumtcs) | |
388 | return -EOPNOTSUPP; | |
33dbabc4 AD |
389 | |
390 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], | |
fceb6435 | 391 | dcbnl_numtcs_nest, NULL); |
7be99413 | 392 | if (ret) |
3d1f4869 | 393 | return ret; |
33dbabc4 AD |
394 | |
395 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { | |
396 | if (data[i] == NULL) | |
397 | continue; | |
398 | ||
399 | value = nla_get_u8(data[i]); | |
400 | ||
401 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); | |
33dbabc4 | 402 | if (ret) |
7be99413 | 403 | break; |
33dbabc4 AD |
404 | } |
405 | ||
7be99413 | 406 | return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret); |
33dbabc4 AD |
407 | } |
408 | ||
7be99413 TG |
409 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, |
410 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
0eb3aa9b | 411 | { |
0eb3aa9b | 412 | if (!netdev->dcbnl_ops->getpfcstate) |
3d1f4869 | 413 | return -EOPNOTSUPP; |
0eb3aa9b | 414 | |
7be99413 TG |
415 | return nla_put_u8(skb, DCB_ATTR_PFC_STATE, |
416 | netdev->dcbnl_ops->getpfcstate(netdev)); | |
0eb3aa9b AD |
417 | } |
418 | ||
7be99413 TG |
419 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, |
420 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
0eb3aa9b | 421 | { |
0eb3aa9b AD |
422 | u8 value; |
423 | ||
3d1f4869 | 424 | if (!tb[DCB_ATTR_PFC_STATE]) |
7be99413 | 425 | return -EINVAL; |
0eb3aa9b | 426 | |
3d1f4869 TG |
427 | if (!netdev->dcbnl_ops->setpfcstate) |
428 | return -EOPNOTSUPP; | |
429 | ||
0eb3aa9b AD |
430 | value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); |
431 | ||
432 | netdev->dcbnl_ops->setpfcstate(netdev, value); | |
433 | ||
7be99413 | 434 | return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0); |
0eb3aa9b AD |
435 | } |
436 | ||
7be99413 TG |
437 | static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh, |
438 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
57949686 | 439 | { |
57949686 YZ |
440 | struct nlattr *app_nest; |
441 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
442 | u16 id; | |
443 | u8 up, idtype; | |
3d1f4869 | 444 | int ret; |
57949686 | 445 | |
3dce38a0 | 446 | if (!tb[DCB_ATTR_APP]) |
3d1f4869 | 447 | return -EINVAL; |
57949686 YZ |
448 | |
449 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
fceb6435 | 450 | dcbnl_app_nest, NULL); |
57949686 | 451 | if (ret) |
3d1f4869 | 452 | return ret; |
57949686 | 453 | |
57949686 YZ |
454 | /* all must be non-null */ |
455 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
456 | (!app_tb[DCB_APP_ATTR_ID])) | |
3d1f4869 | 457 | return -EINVAL; |
57949686 YZ |
458 | |
459 | /* either by eth type or by socket number */ | |
460 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
461 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
462 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
3d1f4869 | 463 | return -EINVAL; |
57949686 YZ |
464 | |
465 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
3dce38a0 JF |
466 | |
467 | if (netdev->dcbnl_ops->getapp) { | |
c2659479 AB |
468 | ret = netdev->dcbnl_ops->getapp(netdev, idtype, id); |
469 | if (ret < 0) | |
470 | return ret; | |
471 | else | |
472 | up = ret; | |
3dce38a0 JF |
473 | } else { |
474 | struct dcb_app app = { | |
475 | .selector = idtype, | |
476 | .protocol = id, | |
477 | }; | |
478 | up = dcb_getapp(netdev, &app); | |
479 | } | |
57949686 | 480 | |
7be99413 | 481 | app_nest = nla_nest_start(skb, DCB_ATTR_APP); |
d3337de5 | 482 | if (!app_nest) |
3d1f4869 | 483 | return -EMSGSIZE; |
d3337de5 | 484 | |
7be99413 | 485 | ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype); |
57949686 YZ |
486 | if (ret) |
487 | goto out_cancel; | |
488 | ||
7be99413 | 489 | ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id); |
57949686 YZ |
490 | if (ret) |
491 | goto out_cancel; | |
492 | ||
7be99413 | 493 | ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up); |
57949686 YZ |
494 | if (ret) |
495 | goto out_cancel; | |
496 | ||
7be99413 | 497 | nla_nest_end(skb, app_nest); |
57949686 | 498 | |
3d1f4869 | 499 | return 0; |
57949686 YZ |
500 | |
501 | out_cancel: | |
7be99413 | 502 | nla_nest_cancel(skb, app_nest); |
57949686 YZ |
503 | return ret; |
504 | } | |
505 | ||
7be99413 TG |
506 | static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh, |
507 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
57949686 | 508 | { |
3d1f4869 | 509 | int ret; |
57949686 YZ |
510 | u16 id; |
511 | u8 up, idtype; | |
512 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; | |
513 | ||
9ab933ab | 514 | if (!tb[DCB_ATTR_APP]) |
3d1f4869 | 515 | return -EINVAL; |
57949686 YZ |
516 | |
517 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], | |
fceb6435 | 518 | dcbnl_app_nest, NULL); |
57949686 | 519 | if (ret) |
3d1f4869 | 520 | return ret; |
57949686 | 521 | |
57949686 YZ |
522 | /* all must be non-null */ |
523 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || | |
524 | (!app_tb[DCB_APP_ATTR_ID]) || | |
525 | (!app_tb[DCB_APP_ATTR_PRIORITY])) | |
3d1f4869 | 526 | return -EINVAL; |
57949686 YZ |
527 | |
528 | /* either by eth type or by socket number */ | |
529 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); | |
530 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && | |
531 | (idtype != DCB_APP_IDTYPE_PORTNUM)) | |
3d1f4869 | 532 | return -EINVAL; |
57949686 YZ |
533 | |
534 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); | |
535 | up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); | |
536 | ||
9ab933ab | 537 | if (netdev->dcbnl_ops->setapp) { |
3d1f4869 | 538 | ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); |
c2659479 AB |
539 | if (ret < 0) |
540 | return ret; | |
9ab933ab JF |
541 | } else { |
542 | struct dcb_app app; | |
543 | app.selector = idtype; | |
544 | app.protocol = id; | |
545 | app.priority = up; | |
3d1f4869 | 546 | ret = dcb_setapp(netdev, &app); |
9ab933ab JF |
547 | } |
548 | ||
7be99413 | 549 | ret = nla_put_u8(skb, DCB_ATTR_APP, ret); |
08157984 | 550 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0); |
3d1f4869 | 551 | |
57949686 YZ |
552 | return ret; |
553 | } | |
554 | ||
7be99413 TG |
555 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
556 | struct nlattr **tb, struct sk_buff *skb, int dir) | |
2f90b865 | 557 | { |
2f90b865 AD |
558 | struct nlattr *pg_nest, *param_nest, *data; |
559 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
560 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
561 | u8 prio, pgid, tc_pct, up_map; | |
3d1f4869 | 562 | int ret; |
2f90b865 AD |
563 | int getall = 0; |
564 | int i; | |
565 | ||
3d1f4869 TG |
566 | if (!tb[DCB_ATTR_PG_CFG]) |
567 | return -EINVAL; | |
568 | ||
569 | if (!netdev->dcbnl_ops->getpgtccfgtx || | |
2f90b865 AD |
570 | !netdev->dcbnl_ops->getpgtccfgrx || |
571 | !netdev->dcbnl_ops->getpgbwgcfgtx || | |
572 | !netdev->dcbnl_ops->getpgbwgcfgrx) | |
3d1f4869 | 573 | return -EOPNOTSUPP; |
2f90b865 | 574 | |
fceb6435 JB |
575 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, tb[DCB_ATTR_PG_CFG], |
576 | dcbnl_pg_nest, NULL); | |
2f90b865 | 577 | if (ret) |
3d1f4869 | 578 | return ret; |
2f90b865 | 579 | |
7be99413 | 580 | pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG); |
2f90b865 | 581 | if (!pg_nest) |
3d1f4869 | 582 | return -EMSGSIZE; |
2f90b865 AD |
583 | |
584 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
585 | getall = 1; | |
586 | ||
587 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
588 | if (!getall && !pg_tb[i]) | |
589 | continue; | |
590 | ||
591 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) | |
592 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; | |
593 | else | |
594 | data = pg_tb[i]; | |
fceb6435 JB |
595 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, data, |
596 | dcbnl_tc_param_nest, NULL); | |
2f90b865 AD |
597 | if (ret) |
598 | goto err_pg; | |
599 | ||
7be99413 | 600 | param_nest = nla_nest_start(skb, i); |
2f90b865 AD |
601 | if (!param_nest) |
602 | goto err_pg; | |
603 | ||
604 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
605 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
606 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
607 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
608 | ||
609 | if (dir) { | |
610 | /* Rx */ | |
611 | netdev->dcbnl_ops->getpgtccfgrx(netdev, | |
612 | i - DCB_PG_ATTR_TC_0, &prio, | |
613 | &pgid, &tc_pct, &up_map); | |
614 | } else { | |
615 | /* Tx */ | |
616 | netdev->dcbnl_ops->getpgtccfgtx(netdev, | |
617 | i - DCB_PG_ATTR_TC_0, &prio, | |
618 | &pgid, &tc_pct, &up_map); | |
619 | } | |
620 | ||
621 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || | |
622 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
7be99413 | 623 | ret = nla_put_u8(skb, |
2f90b865 AD |
624 | DCB_TC_ATTR_PARAM_PGID, pgid); |
625 | if (ret) | |
626 | goto err_param; | |
627 | } | |
628 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || | |
629 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
7be99413 | 630 | ret = nla_put_u8(skb, |
2f90b865 AD |
631 | DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); |
632 | if (ret) | |
633 | goto err_param; | |
634 | } | |
635 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || | |
636 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
7be99413 | 637 | ret = nla_put_u8(skb, |
2f90b865 AD |
638 | DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); |
639 | if (ret) | |
640 | goto err_param; | |
641 | } | |
642 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || | |
643 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { | |
7be99413 | 644 | ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, |
2f90b865 AD |
645 | tc_pct); |
646 | if (ret) | |
647 | goto err_param; | |
648 | } | |
7be99413 | 649 | nla_nest_end(skb, param_nest); |
2f90b865 AD |
650 | } |
651 | ||
652 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) | |
653 | getall = 1; | |
654 | else | |
655 | getall = 0; | |
656 | ||
657 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
658 | if (!getall && !pg_tb[i]) | |
659 | continue; | |
660 | ||
661 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
662 | ||
663 | if (dir) { | |
664 | /* Rx */ | |
665 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, | |
666 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
667 | } else { | |
668 | /* Tx */ | |
669 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, | |
670 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); | |
671 | } | |
7be99413 | 672 | ret = nla_put_u8(skb, i, tc_pct); |
2f90b865 AD |
673 | if (ret) |
674 | goto err_pg; | |
675 | } | |
676 | ||
7be99413 | 677 | nla_nest_end(skb, pg_nest); |
2f90b865 AD |
678 | |
679 | return 0; | |
680 | ||
681 | err_param: | |
7be99413 | 682 | nla_nest_cancel(skb, param_nest); |
2f90b865 | 683 | err_pg: |
7be99413 | 684 | nla_nest_cancel(skb, pg_nest); |
3d1f4869 TG |
685 | |
686 | return -EMSGSIZE; | |
2f90b865 AD |
687 | } |
688 | ||
7be99413 TG |
689 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
690 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 691 | { |
7be99413 | 692 | return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0); |
2f90b865 AD |
693 | } |
694 | ||
7be99413 TG |
695 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
696 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 697 | { |
7be99413 | 698 | return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1); |
2f90b865 AD |
699 | } |
700 | ||
7be99413 TG |
701 | static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh, |
702 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 703 | { |
2f90b865 AD |
704 | u8 value; |
705 | ||
3d1f4869 | 706 | if (!tb[DCB_ATTR_STATE]) |
7be99413 | 707 | return -EINVAL; |
2f90b865 | 708 | |
3d1f4869 TG |
709 | if (!netdev->dcbnl_ops->setstate) |
710 | return -EOPNOTSUPP; | |
711 | ||
2f90b865 AD |
712 | value = nla_get_u8(tb[DCB_ATTR_STATE]); |
713 | ||
7be99413 TG |
714 | return nla_put_u8(skb, DCB_ATTR_STATE, |
715 | netdev->dcbnl_ops->setstate(netdev, value)); | |
2f90b865 AD |
716 | } |
717 | ||
7be99413 TG |
718 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, |
719 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 AD |
720 | { |
721 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; | |
722 | int i; | |
3d1f4869 | 723 | int ret; |
2f90b865 AD |
724 | u8 value; |
725 | ||
3d1f4869 TG |
726 | if (!tb[DCB_ATTR_PFC_CFG]) |
727 | return -EINVAL; | |
728 | ||
729 | if (!netdev->dcbnl_ops->setpfccfg) | |
730 | return -EOPNOTSUPP; | |
2f90b865 AD |
731 | |
732 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, | |
fceb6435 | 733 | tb[DCB_ATTR_PFC_CFG], dcbnl_pfc_up_nest, NULL); |
2f90b865 | 734 | if (ret) |
3d1f4869 | 735 | return ret; |
2f90b865 AD |
736 | |
737 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
738 | if (data[i] == NULL) | |
739 | continue; | |
740 | value = nla_get_u8(data[i]); | |
741 | netdev->dcbnl_ops->setpfccfg(netdev, | |
742 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); | |
743 | } | |
744 | ||
7be99413 | 745 | return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0); |
2f90b865 AD |
746 | } |
747 | ||
7be99413 TG |
748 | static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh, |
749 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 750 | { |
3d1f4869 | 751 | int ret; |
2f90b865 | 752 | |
3d1f4869 TG |
753 | if (!tb[DCB_ATTR_SET_ALL]) |
754 | return -EINVAL; | |
755 | ||
756 | if (!netdev->dcbnl_ops->setall) | |
757 | return -EOPNOTSUPP; | |
2f90b865 | 758 | |
7be99413 TG |
759 | ret = nla_put_u8(skb, DCB_ATTR_SET_ALL, |
760 | netdev->dcbnl_ops->setall(netdev)); | |
08157984 | 761 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0); |
2f90b865 AD |
762 | |
763 | return ret; | |
764 | } | |
765 | ||
7be99413 TG |
766 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
767 | u32 seq, struct nlattr **tb, struct sk_buff *skb, | |
768 | int dir) | |
2f90b865 AD |
769 | { |
770 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; | |
771 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; | |
3d1f4869 | 772 | int ret; |
2f90b865 AD |
773 | int i; |
774 | u8 pgid; | |
775 | u8 up_map; | |
776 | u8 prio; | |
777 | u8 tc_pct; | |
778 | ||
3d1f4869 TG |
779 | if (!tb[DCB_ATTR_PG_CFG]) |
780 | return -EINVAL; | |
781 | ||
782 | if (!netdev->dcbnl_ops->setpgtccfgtx || | |
2f90b865 AD |
783 | !netdev->dcbnl_ops->setpgtccfgrx || |
784 | !netdev->dcbnl_ops->setpgbwgcfgtx || | |
785 | !netdev->dcbnl_ops->setpgbwgcfgrx) | |
3d1f4869 | 786 | return -EOPNOTSUPP; |
2f90b865 | 787 | |
fceb6435 JB |
788 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, tb[DCB_ATTR_PG_CFG], |
789 | dcbnl_pg_nest, NULL); | |
2f90b865 | 790 | if (ret) |
3d1f4869 | 791 | return ret; |
2f90b865 AD |
792 | |
793 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
794 | if (!pg_tb[i]) | |
795 | continue; | |
796 | ||
797 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, | |
fceb6435 | 798 | pg_tb[i], dcbnl_tc_param_nest, NULL); |
2f90b865 | 799 | if (ret) |
3d1f4869 | 800 | return ret; |
2f90b865 AD |
801 | |
802 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
803 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
804 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
805 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
806 | ||
807 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) | |
808 | prio = | |
809 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); | |
810 | ||
811 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) | |
812 | pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); | |
813 | ||
814 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) | |
815 | tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); | |
816 | ||
817 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) | |
818 | up_map = | |
819 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); | |
820 | ||
821 | /* dir: Tx = 0, Rx = 1 */ | |
822 | if (dir) { | |
823 | /* Rx */ | |
824 | netdev->dcbnl_ops->setpgtccfgrx(netdev, | |
825 | i - DCB_PG_ATTR_TC_0, | |
826 | prio, pgid, tc_pct, up_map); | |
827 | } else { | |
828 | /* Tx */ | |
829 | netdev->dcbnl_ops->setpgtccfgtx(netdev, | |
830 | i - DCB_PG_ATTR_TC_0, | |
831 | prio, pgid, tc_pct, up_map); | |
832 | } | |
833 | } | |
834 | ||
835 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
836 | if (!pg_tb[i]) | |
837 | continue; | |
838 | ||
839 | tc_pct = nla_get_u8(pg_tb[i]); | |
840 | ||
841 | /* dir: Tx = 0, Rx = 1 */ | |
842 | if (dir) { | |
843 | /* Rx */ | |
844 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, | |
845 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
846 | } else { | |
847 | /* Tx */ | |
848 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, | |
849 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); | |
850 | } | |
851 | } | |
852 | ||
bb1dfefd | 853 | return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0); |
2f90b865 AD |
854 | } |
855 | ||
7be99413 TG |
856 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
857 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 858 | { |
7be99413 | 859 | return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0); |
2f90b865 AD |
860 | } |
861 | ||
7be99413 TG |
862 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
863 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
2f90b865 | 864 | { |
7be99413 | 865 | return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1); |
2f90b865 AD |
866 | } |
867 | ||
7be99413 TG |
868 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
869 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
859ee3c4 | 870 | { |
859ee3c4 AD |
871 | struct nlattr *bcn_nest; |
872 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; | |
873 | u8 value_byte; | |
874 | u32 value_integer; | |
3d1f4869 | 875 | int ret; |
859ee3c4 AD |
876 | bool getall = false; |
877 | int i; | |
878 | ||
3d1f4869 TG |
879 | if (!tb[DCB_ATTR_BCN]) |
880 | return -EINVAL; | |
881 | ||
882 | if (!netdev->dcbnl_ops->getbcnrp || | |
859ee3c4 | 883 | !netdev->dcbnl_ops->getbcncfg) |
3d1f4869 | 884 | return -EOPNOTSUPP; |
859ee3c4 | 885 | |
fceb6435 JB |
886 | ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX, tb[DCB_ATTR_BCN], |
887 | dcbnl_bcn_nest, NULL); | |
859ee3c4 | 888 | if (ret) |
3d1f4869 | 889 | return ret; |
859ee3c4 | 890 | |
7be99413 | 891 | bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN); |
859ee3c4 | 892 | if (!bcn_nest) |
3d1f4869 | 893 | return -EMSGSIZE; |
859ee3c4 AD |
894 | |
895 | if (bcn_tb[DCB_BCN_ATTR_ALL]) | |
896 | getall = true; | |
897 | ||
898 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
899 | if (!getall && !bcn_tb[i]) | |
900 | continue; | |
901 | ||
902 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, | |
903 | &value_byte); | |
7be99413 | 904 | ret = nla_put_u8(skb, i, value_byte); |
859ee3c4 AD |
905 | if (ret) |
906 | goto err_bcn; | |
907 | } | |
908 | ||
f4314e81 | 909 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
910 | if (!getall && !bcn_tb[i]) |
911 | continue; | |
912 | ||
913 | netdev->dcbnl_ops->getbcncfg(netdev, i, | |
914 | &value_integer); | |
7be99413 | 915 | ret = nla_put_u32(skb, i, value_integer); |
859ee3c4 AD |
916 | if (ret) |
917 | goto err_bcn; | |
918 | } | |
919 | ||
7be99413 | 920 | nla_nest_end(skb, bcn_nest); |
859ee3c4 AD |
921 | |
922 | return 0; | |
923 | ||
924 | err_bcn: | |
7be99413 | 925 | nla_nest_cancel(skb, bcn_nest); |
859ee3c4 AD |
926 | return ret; |
927 | } | |
928 | ||
7be99413 TG |
929 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
930 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
859ee3c4 AD |
931 | { |
932 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; | |
933 | int i; | |
3d1f4869 | 934 | int ret; |
859ee3c4 AD |
935 | u8 value_byte; |
936 | u32 value_int; | |
937 | ||
3d1f4869 TG |
938 | if (!tb[DCB_ATTR_BCN]) |
939 | return -EINVAL; | |
940 | ||
941 | if (!netdev->dcbnl_ops->setbcncfg || | |
f64f9e71 | 942 | !netdev->dcbnl_ops->setbcnrp) |
3d1f4869 | 943 | return -EOPNOTSUPP; |
859ee3c4 | 944 | |
fceb6435 JB |
945 | ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX, tb[DCB_ATTR_BCN], |
946 | dcbnl_pfc_up_nest, NULL); | |
859ee3c4 | 947 | if (ret) |
3d1f4869 | 948 | return ret; |
859ee3c4 AD |
949 | |
950 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { | |
951 | if (data[i] == NULL) | |
952 | continue; | |
953 | value_byte = nla_get_u8(data[i]); | |
954 | netdev->dcbnl_ops->setbcnrp(netdev, | |
955 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); | |
956 | } | |
957 | ||
f4314e81 | 958 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
859ee3c4 AD |
959 | if (data[i] == NULL) |
960 | continue; | |
961 | value_int = nla_get_u32(data[i]); | |
962 | netdev->dcbnl_ops->setbcncfg(netdev, | |
963 | i, value_int); | |
964 | } | |
965 | ||
3d1f4869 | 966 | return nla_put_u8(skb, DCB_ATTR_BCN, 0); |
859ee3c4 AD |
967 | } |
968 | ||
dc6ed1df SR |
969 | static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, |
970 | int app_nested_type, int app_info_type, | |
971 | int app_entry_type) | |
eed84713 SR |
972 | { |
973 | struct dcb_peer_app_info info; | |
974 | struct dcb_app *table = NULL; | |
975 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
976 | u16 app_count; | |
977 | int err; | |
978 | ||
979 | ||
980 | /** | |
981 | * retrieve the peer app configuration form the driver. If the driver | |
982 | * handlers fail exit without doing anything | |
983 | */ | |
984 | err = ops->peer_getappinfo(netdev, &info, &app_count); | |
985 | if (!err && app_count) { | |
986 | table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL); | |
987 | if (!table) | |
988 | return -ENOMEM; | |
989 | ||
990 | err = ops->peer_getapptable(netdev, table); | |
991 | } | |
992 | ||
993 | if (!err) { | |
994 | u16 i; | |
995 | struct nlattr *app; | |
996 | ||
997 | /** | |
998 | * build the message, from here on the only possible failure | |
999 | * is due to the skb size | |
1000 | */ | |
1001 | err = -EMSGSIZE; | |
1002 | ||
dc6ed1df | 1003 | app = nla_nest_start(skb, app_nested_type); |
eed84713 SR |
1004 | if (!app) |
1005 | goto nla_put_failure; | |
1006 | ||
1eb4c977 DM |
1007 | if (app_info_type && |
1008 | nla_put(skb, app_info_type, sizeof(info), &info)) | |
1009 | goto nla_put_failure; | |
eed84713 | 1010 | |
1eb4c977 DM |
1011 | for (i = 0; i < app_count; i++) { |
1012 | if (nla_put(skb, app_entry_type, sizeof(struct dcb_app), | |
1013 | &table[i])) | |
1014 | goto nla_put_failure; | |
1015 | } | |
eed84713 SR |
1016 | nla_nest_end(skb, app); |
1017 | } | |
1018 | err = 0; | |
1019 | ||
1020 | nla_put_failure: | |
1021 | kfree(table); | |
1022 | return err; | |
1023 | } | |
3e29027a | 1024 | |
c9368247 | 1025 | /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */ |
314b4778 | 1026 | static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) |
3e29027a | 1027 | { |
9ab933ab JF |
1028 | struct nlattr *ieee, *app; |
1029 | struct dcb_app_type *itr; | |
3e29027a | 1030 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
c7797baf | 1031 | int dcbx; |
3d1f4869 | 1032 | int err; |
3e29027a | 1033 | |
1eb4c977 | 1034 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
3d1f4869 TG |
1035 | return -EMSGSIZE; |
1036 | ||
3e29027a JF |
1037 | ieee = nla_nest_start(skb, DCB_ATTR_IEEE); |
1038 | if (!ieee) | |
3d1f4869 | 1039 | return -EMSGSIZE; |
3e29027a JF |
1040 | |
1041 | if (ops->ieee_getets) { | |
1042 | struct ieee_ets ets; | |
29cd8ae0 | 1043 | memset(&ets, 0, sizeof(ets)); |
3e29027a | 1044 | err = ops->ieee_getets(netdev, &ets); |
1eb4c977 DM |
1045 | if (!err && |
1046 | nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets)) | |
3d1f4869 | 1047 | return -EMSGSIZE; |
3e29027a JF |
1048 | } |
1049 | ||
08f10aff AV |
1050 | if (ops->ieee_getmaxrate) { |
1051 | struct ieee_maxrate maxrate; | |
29cd8ae0 | 1052 | memset(&maxrate, 0, sizeof(maxrate)); |
08f10aff AV |
1053 | err = ops->ieee_getmaxrate(netdev, &maxrate); |
1054 | if (!err) { | |
1055 | err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE, | |
1056 | sizeof(maxrate), &maxrate); | |
1057 | if (err) | |
3d1f4869 | 1058 | return -EMSGSIZE; |
08f10aff AV |
1059 | } |
1060 | } | |
1061 | ||
c9368247 SM |
1062 | if (ops->ieee_getqcn) { |
1063 | struct ieee_qcn qcn; | |
1064 | ||
1065 | memset(&qcn, 0, sizeof(qcn)); | |
1066 | err = ops->ieee_getqcn(netdev, &qcn); | |
1067 | if (!err) { | |
1068 | err = nla_put(skb, DCB_ATTR_IEEE_QCN, | |
1069 | sizeof(qcn), &qcn); | |
1070 | if (err) | |
1071 | return -EMSGSIZE; | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | if (ops->ieee_getqcnstats) { | |
1076 | struct ieee_qcn_stats qcn_stats; | |
1077 | ||
1078 | memset(&qcn_stats, 0, sizeof(qcn_stats)); | |
1079 | err = ops->ieee_getqcnstats(netdev, &qcn_stats); | |
1080 | if (!err) { | |
1081 | err = nla_put(skb, DCB_ATTR_IEEE_QCN_STATS, | |
1082 | sizeof(qcn_stats), &qcn_stats); | |
1083 | if (err) | |
1084 | return -EMSGSIZE; | |
1085 | } | |
1086 | } | |
1087 | ||
3e29027a JF |
1088 | if (ops->ieee_getpfc) { |
1089 | struct ieee_pfc pfc; | |
29cd8ae0 | 1090 | memset(&pfc, 0, sizeof(pfc)); |
3e29027a | 1091 | err = ops->ieee_getpfc(netdev, &pfc); |
1eb4c977 DM |
1092 | if (!err && |
1093 | nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc)) | |
3d1f4869 | 1094 | return -EMSGSIZE; |
3e29027a JF |
1095 | } |
1096 | ||
9ab933ab JF |
1097 | app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE); |
1098 | if (!app) | |
3d1f4869 | 1099 | return -EMSGSIZE; |
9ab933ab | 1100 | |
52cff74e | 1101 | spin_lock_bh(&dcb_lock); |
9ab933ab | 1102 | list_for_each_entry(itr, &dcb_app_list, list) { |
e290ed81 | 1103 | if (itr->ifindex == netdev->ifindex) { |
70bfa2d2 DC |
1104 | err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app), |
1105 | &itr->app); | |
1106 | if (err) { | |
52cff74e | 1107 | spin_unlock_bh(&dcb_lock); |
3d1f4869 | 1108 | return -EMSGSIZE; |
70bfa2d2 DC |
1109 | } |
1110 | } | |
9ab933ab | 1111 | } |
c7797baf JF |
1112 | |
1113 | if (netdev->dcbnl_ops->getdcbx) | |
1114 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
1115 | else | |
1116 | dcbx = -EOPNOTSUPP; | |
1117 | ||
52cff74e | 1118 | spin_unlock_bh(&dcb_lock); |
9ab933ab JF |
1119 | nla_nest_end(skb, app); |
1120 | ||
eed84713 SR |
1121 | /* get peer info if available */ |
1122 | if (ops->ieee_peer_getets) { | |
1123 | struct ieee_ets ets; | |
29cd8ae0 | 1124 | memset(&ets, 0, sizeof(ets)); |
eed84713 | 1125 | err = ops->ieee_peer_getets(netdev, &ets); |
1eb4c977 DM |
1126 | if (!err && |
1127 | nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets)) | |
3d1f4869 | 1128 | return -EMSGSIZE; |
eed84713 SR |
1129 | } |
1130 | ||
1131 | if (ops->ieee_peer_getpfc) { | |
1132 | struct ieee_pfc pfc; | |
29cd8ae0 | 1133 | memset(&pfc, 0, sizeof(pfc)); |
eed84713 | 1134 | err = ops->ieee_peer_getpfc(netdev, &pfc); |
1eb4c977 DM |
1135 | if (!err && |
1136 | nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc)) | |
3d1f4869 | 1137 | return -EMSGSIZE; |
eed84713 SR |
1138 | } |
1139 | ||
1140 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
dc6ed1df SR |
1141 | err = dcbnl_build_peer_app(netdev, skb, |
1142 | DCB_ATTR_IEEE_PEER_APP, | |
1143 | DCB_ATTR_IEEE_APP_UNSPEC, | |
1144 | DCB_ATTR_IEEE_APP); | |
eed84713 | 1145 | if (err) |
3d1f4869 | 1146 | return -EMSGSIZE; |
eed84713 SR |
1147 | } |
1148 | ||
3e29027a | 1149 | nla_nest_end(skb, ieee); |
c7797baf JF |
1150 | if (dcbx >= 0) { |
1151 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); | |
1152 | if (err) | |
3d1f4869 | 1153 | return -EMSGSIZE; |
c7797baf | 1154 | } |
3e29027a | 1155 | |
314b4778 | 1156 | return 0; |
3e29027a JF |
1157 | } |
1158 | ||
5b7f7626 SR |
1159 | static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, |
1160 | int dir) | |
1161 | { | |
1162 | u8 pgid, up_map, prio, tc_pct; | |
1163 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; | |
1164 | int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; | |
1165 | struct nlattr *pg = nla_nest_start(skb, i); | |
1166 | ||
1167 | if (!pg) | |
3d1f4869 | 1168 | return -EMSGSIZE; |
5b7f7626 SR |
1169 | |
1170 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { | |
1171 | struct nlattr *tc_nest = nla_nest_start(skb, i); | |
1172 | ||
1173 | if (!tc_nest) | |
3d1f4869 | 1174 | return -EMSGSIZE; |
5b7f7626 SR |
1175 | |
1176 | pgid = DCB_ATTR_VALUE_UNDEFINED; | |
1177 | prio = DCB_ATTR_VALUE_UNDEFINED; | |
1178 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
1179 | up_map = DCB_ATTR_VALUE_UNDEFINED; | |
1180 | ||
1181 | if (!dir) | |
1182 | ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, | |
1183 | &prio, &pgid, &tc_pct, &up_map); | |
1184 | else | |
1185 | ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, | |
1186 | &prio, &pgid, &tc_pct, &up_map); | |
1187 | ||
1eb4c977 DM |
1188 | if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) || |
1189 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) || | |
1190 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) || | |
1191 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct)) | |
3d1f4869 | 1192 | return -EMSGSIZE; |
5b7f7626 SR |
1193 | nla_nest_end(skb, tc_nest); |
1194 | } | |
1195 | ||
1196 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { | |
1197 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; | |
1198 | ||
1199 | if (!dir) | |
1200 | ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, | |
1201 | &tc_pct); | |
1202 | else | |
1203 | ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, | |
1204 | &tc_pct); | |
1eb4c977 | 1205 | if (nla_put_u8(skb, i, tc_pct)) |
3d1f4869 | 1206 | return -EMSGSIZE; |
5b7f7626 SR |
1207 | } |
1208 | nla_nest_end(skb, pg); | |
1209 | return 0; | |
5b7f7626 SR |
1210 | } |
1211 | ||
1212 | static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) | |
1213 | { | |
1214 | struct nlattr *cee, *app; | |
1215 | struct dcb_app_type *itr; | |
1216 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1217 | int dcbx, i, err = -EMSGSIZE; | |
1218 | u8 value; | |
1219 | ||
1eb4c977 DM |
1220 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
1221 | goto nla_put_failure; | |
5b7f7626 SR |
1222 | cee = nla_nest_start(skb, DCB_ATTR_CEE); |
1223 | if (!cee) | |
1224 | goto nla_put_failure; | |
1225 | ||
1226 | /* local pg */ | |
1227 | if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { | |
1228 | err = dcbnl_cee_pg_fill(skb, netdev, 1); | |
1229 | if (err) | |
1230 | goto nla_put_failure; | |
1231 | } | |
1232 | ||
1233 | if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { | |
1234 | err = dcbnl_cee_pg_fill(skb, netdev, 0); | |
1235 | if (err) | |
1236 | goto nla_put_failure; | |
1237 | } | |
1238 | ||
1239 | /* local pfc */ | |
1240 | if (ops->getpfccfg) { | |
1241 | struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC); | |
1242 | ||
1243 | if (!pfc_nest) | |
1244 | goto nla_put_failure; | |
1245 | ||
1246 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { | |
1247 | ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); | |
1eb4c977 DM |
1248 | if (nla_put_u8(skb, i, value)) |
1249 | goto nla_put_failure; | |
5b7f7626 SR |
1250 | } |
1251 | nla_nest_end(skb, pfc_nest); | |
1252 | } | |
1253 | ||
1254 | /* local app */ | |
52cff74e | 1255 | spin_lock_bh(&dcb_lock); |
5b7f7626 SR |
1256 | app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE); |
1257 | if (!app) | |
40f5d72a | 1258 | goto dcb_unlock; |
5b7f7626 SR |
1259 | |
1260 | list_for_each_entry(itr, &dcb_app_list, list) { | |
e290ed81 | 1261 | if (itr->ifindex == netdev->ifindex) { |
5b7f7626 SR |
1262 | struct nlattr *app_nest = nla_nest_start(skb, |
1263 | DCB_ATTR_APP); | |
1264 | if (!app_nest) | |
1265 | goto dcb_unlock; | |
1266 | ||
1267 | err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, | |
1268 | itr->app.selector); | |
1269 | if (err) | |
1270 | goto dcb_unlock; | |
1271 | ||
1272 | err = nla_put_u16(skb, DCB_APP_ATTR_ID, | |
1273 | itr->app.protocol); | |
1274 | if (err) | |
1275 | goto dcb_unlock; | |
1276 | ||
1277 | err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, | |
1278 | itr->app.priority); | |
1279 | if (err) | |
1280 | goto dcb_unlock; | |
1281 | ||
1282 | nla_nest_end(skb, app_nest); | |
1283 | } | |
1284 | } | |
1285 | nla_nest_end(skb, app); | |
1286 | ||
1287 | if (netdev->dcbnl_ops->getdcbx) | |
1288 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
1289 | else | |
1290 | dcbx = -EOPNOTSUPP; | |
1291 | ||
52cff74e | 1292 | spin_unlock_bh(&dcb_lock); |
5b7f7626 SR |
1293 | |
1294 | /* features flags */ | |
1295 | if (ops->getfeatcfg) { | |
1296 | struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT); | |
1297 | if (!feat) | |
1298 | goto nla_put_failure; | |
1299 | ||
1300 | for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; | |
1301 | i++) | |
1eb4c977 DM |
1302 | if (!ops->getfeatcfg(netdev, i, &value) && |
1303 | nla_put_u8(skb, i, value)) | |
1304 | goto nla_put_failure; | |
5b7f7626 SR |
1305 | |
1306 | nla_nest_end(skb, feat); | |
1307 | } | |
1308 | ||
1309 | /* peer info if available */ | |
1310 | if (ops->cee_peer_getpg) { | |
1311 | struct cee_pg pg; | |
29cd8ae0 | 1312 | memset(&pg, 0, sizeof(pg)); |
5b7f7626 | 1313 | err = ops->cee_peer_getpg(netdev, &pg); |
1eb4c977 DM |
1314 | if (!err && |
1315 | nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg)) | |
1316 | goto nla_put_failure; | |
5b7f7626 SR |
1317 | } |
1318 | ||
1319 | if (ops->cee_peer_getpfc) { | |
1320 | struct cee_pfc pfc; | |
29cd8ae0 | 1321 | memset(&pfc, 0, sizeof(pfc)); |
5b7f7626 | 1322 | err = ops->cee_peer_getpfc(netdev, &pfc); |
1eb4c977 DM |
1323 | if (!err && |
1324 | nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc)) | |
1325 | goto nla_put_failure; | |
5b7f7626 SR |
1326 | } |
1327 | ||
1328 | if (ops->peer_getappinfo && ops->peer_getapptable) { | |
1329 | err = dcbnl_build_peer_app(netdev, skb, | |
1330 | DCB_ATTR_CEE_PEER_APP_TABLE, | |
1331 | DCB_ATTR_CEE_PEER_APP_INFO, | |
1332 | DCB_ATTR_CEE_PEER_APP); | |
1333 | if (err) | |
1334 | goto nla_put_failure; | |
1335 | } | |
1336 | nla_nest_end(skb, cee); | |
1337 | ||
1338 | /* DCBX state */ | |
1339 | if (dcbx >= 0) { | |
1340 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); | |
1341 | if (err) | |
1342 | goto nla_put_failure; | |
1343 | } | |
1344 | return 0; | |
1345 | ||
1346 | dcb_unlock: | |
52cff74e | 1347 | spin_unlock_bh(&dcb_lock); |
5b7f7626 | 1348 | nla_put_failure: |
c66ebf2d | 1349 | err = -EMSGSIZE; |
5b7f7626 SR |
1350 | return err; |
1351 | } | |
1352 | ||
1353 | static int dcbnl_notify(struct net_device *dev, int event, int cmd, | |
15e47304 | 1354 | u32 seq, u32 portid, int dcbx_ver) |
314b4778 JF |
1355 | { |
1356 | struct net *net = dev_net(dev); | |
1357 | struct sk_buff *skb; | |
1358 | struct nlmsghdr *nlh; | |
314b4778 JF |
1359 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; |
1360 | int err; | |
1361 | ||
1362 | if (!ops) | |
1363 | return -EOPNOTSUPP; | |
1364 | ||
15e47304 | 1365 | skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh); |
314b4778 JF |
1366 | if (!skb) |
1367 | return -ENOBUFS; | |
1368 | ||
5b7f7626 SR |
1369 | if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) |
1370 | err = dcbnl_ieee_fill(skb, dev); | |
1371 | else | |
1372 | err = dcbnl_cee_fill(skb, dev); | |
1373 | ||
314b4778 JF |
1374 | if (err < 0) { |
1375 | /* Report error to broadcast listeners */ | |
ab6d4707 | 1376 | nlmsg_free(skb); |
314b4778 JF |
1377 | rtnl_set_sk_err(net, RTNLGRP_DCB, err); |
1378 | } else { | |
1379 | /* End nlmsg and notify broadcast listeners */ | |
1380 | nlmsg_end(skb, nlh); | |
1381 | rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL); | |
1382 | } | |
1383 | ||
1384 | return err; | |
1385 | } | |
5b7f7626 SR |
1386 | |
1387 | int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, | |
15e47304 | 1388 | u32 seq, u32 portid) |
5b7f7626 | 1389 | { |
15e47304 | 1390 | return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE); |
5b7f7626 SR |
1391 | } |
1392 | EXPORT_SYMBOL(dcbnl_ieee_notify); | |
1393 | ||
1394 | int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, | |
15e47304 | 1395 | u32 seq, u32 portid) |
5b7f7626 | 1396 | { |
15e47304 | 1397 | return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE); |
5b7f7626 SR |
1398 | } |
1399 | EXPORT_SYMBOL(dcbnl_cee_notify); | |
314b4778 | 1400 | |
c9368247 SM |
1401 | /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb SET commands. |
1402 | * If any requested operation can not be completed | |
1403 | * the entire msg is aborted and error value is returned. | |
314b4778 JF |
1404 | * No attempt is made to reconcile the case where only part of the |
1405 | * cmd can be completed. | |
1406 | */ | |
7be99413 TG |
1407 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh, |
1408 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
314b4778 JF |
1409 | { |
1410 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1411 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; | |
3d1f4869 | 1412 | int err; |
314b4778 JF |
1413 | |
1414 | if (!ops) | |
3d1f4869 | 1415 | return -EOPNOTSUPP; |
314b4778 | 1416 | |
4003b658 JF |
1417 | if (!tb[DCB_ATTR_IEEE]) |
1418 | return -EINVAL; | |
1419 | ||
fceb6435 JB |
1420 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, tb[DCB_ATTR_IEEE], |
1421 | dcbnl_ieee_policy, NULL); | |
314b4778 JF |
1422 | if (err) |
1423 | return err; | |
1424 | ||
1425 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { | |
1426 | struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); | |
1427 | err = ops->ieee_setets(netdev, ets); | |
1428 | if (err) | |
1429 | goto err; | |
1430 | } | |
1431 | ||
08f10aff AV |
1432 | if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) { |
1433 | struct ieee_maxrate *maxrate = | |
1434 | nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]); | |
1435 | err = ops->ieee_setmaxrate(netdev, maxrate); | |
1436 | if (err) | |
1437 | goto err; | |
1438 | } | |
1439 | ||
c9368247 SM |
1440 | if (ieee[DCB_ATTR_IEEE_QCN] && ops->ieee_setqcn) { |
1441 | struct ieee_qcn *qcn = | |
1442 | nla_data(ieee[DCB_ATTR_IEEE_QCN]); | |
1443 | ||
1444 | err = ops->ieee_setqcn(netdev, qcn); | |
1445 | if (err) | |
1446 | goto err; | |
1447 | } | |
1448 | ||
314b4778 JF |
1449 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
1450 | struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); | |
1451 | err = ops->ieee_setpfc(netdev, pfc); | |
1452 | if (err) | |
1453 | goto err; | |
1454 | } | |
1455 | ||
1456 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { | |
1457 | struct nlattr *attr; | |
1458 | int rem; | |
1459 | ||
1460 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { | |
1461 | struct dcb_app *app_data; | |
332b4fc8 | 1462 | |
314b4778 JF |
1463 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) |
1464 | continue; | |
332b4fc8 | 1465 | |
1466 | if (nla_len(attr) < sizeof(struct dcb_app)) { | |
1467 | err = -ERANGE; | |
1468 | goto err; | |
1469 | } | |
1470 | ||
314b4778 JF |
1471 | app_data = nla_data(attr); |
1472 | if (ops->ieee_setapp) | |
1473 | err = ops->ieee_setapp(netdev, app_data); | |
1474 | else | |
b6db2174 | 1475 | err = dcb_ieee_setapp(netdev, app_data); |
314b4778 JF |
1476 | if (err) |
1477 | goto err; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | err: | |
7be99413 | 1482 | err = nla_put_u8(skb, DCB_ATTR_IEEE, err); |
5b7f7626 | 1483 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); |
314b4778 JF |
1484 | return err; |
1485 | } | |
1486 | ||
7be99413 TG |
1487 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh, |
1488 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
314b4778 | 1489 | { |
314b4778 | 1490 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
314b4778 JF |
1491 | |
1492 | if (!ops) | |
1493 | return -EOPNOTSUPP; | |
1494 | ||
7be99413 | 1495 | return dcbnl_ieee_fill(skb, netdev); |
314b4778 | 1496 | } |
f9ae7e4b | 1497 | |
7be99413 TG |
1498 | static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh, |
1499 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
f9ae7e4b JF |
1500 | { |
1501 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; | |
1502 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; | |
3d1f4869 | 1503 | int err; |
f9ae7e4b JF |
1504 | |
1505 | if (!ops) | |
1506 | return -EOPNOTSUPP; | |
1507 | ||
1508 | if (!tb[DCB_ATTR_IEEE]) | |
1509 | return -EINVAL; | |
1510 | ||
fceb6435 JB |
1511 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, tb[DCB_ATTR_IEEE], |
1512 | dcbnl_ieee_policy, NULL); | |
f9ae7e4b JF |
1513 | if (err) |
1514 | return err; | |
1515 | ||
1516 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { | |
1517 | struct nlattr *attr; | |
1518 | int rem; | |
1519 | ||
1520 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { | |
1521 | struct dcb_app *app_data; | |
1522 | ||
1523 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) | |
1524 | continue; | |
1525 | app_data = nla_data(attr); | |
1526 | if (ops->ieee_delapp) | |
1527 | err = ops->ieee_delapp(netdev, app_data); | |
1528 | else | |
1529 | err = dcb_ieee_delapp(netdev, app_data); | |
1530 | if (err) | |
1531 | goto err; | |
1532 | } | |
1533 | } | |
1534 | ||
1535 | err: | |
7be99413 | 1536 | err = nla_put_u8(skb, DCB_ATTR_IEEE, err); |
5b7f7626 | 1537 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); |
f9ae7e4b JF |
1538 | return err; |
1539 | } | |
1540 | ||
1541 | ||
6241b625 | 1542 | /* DCBX configuration */ |
7be99413 TG |
1543 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh, |
1544 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
6241b625 | 1545 | { |
6241b625 | 1546 | if (!netdev->dcbnl_ops->getdcbx) |
7f891cf1 | 1547 | return -EOPNOTSUPP; |
6241b625 | 1548 | |
7be99413 TG |
1549 | return nla_put_u8(skb, DCB_ATTR_DCBX, |
1550 | netdev->dcbnl_ops->getdcbx(netdev)); | |
6241b625 SR |
1551 | } |
1552 | ||
7be99413 TG |
1553 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh, |
1554 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
6241b625 | 1555 | { |
6241b625 SR |
1556 | u8 value; |
1557 | ||
7f891cf1 SR |
1558 | if (!netdev->dcbnl_ops->setdcbx) |
1559 | return -EOPNOTSUPP; | |
1560 | ||
1561 | if (!tb[DCB_ATTR_DCBX]) | |
1562 | return -EINVAL; | |
6241b625 SR |
1563 | |
1564 | value = nla_get_u8(tb[DCB_ATTR_DCBX]); | |
1565 | ||
7be99413 TG |
1566 | return nla_put_u8(skb, DCB_ATTR_DCBX, |
1567 | netdev->dcbnl_ops->setdcbx(netdev, value)); | |
6241b625 SR |
1568 | } |
1569 | ||
7be99413 TG |
1570 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
1571 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
ea45fe4e | 1572 | { |
ea45fe4e SR |
1573 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; |
1574 | u8 value; | |
7f891cf1 | 1575 | int ret, i; |
ea45fe4e SR |
1576 | int getall = 0; |
1577 | ||
7f891cf1 SR |
1578 | if (!netdev->dcbnl_ops->getfeatcfg) |
1579 | return -EOPNOTSUPP; | |
1580 | ||
1581 | if (!tb[DCB_ATTR_FEATCFG]) | |
1582 | return -EINVAL; | |
ea45fe4e | 1583 | |
fceb6435 JB |
1584 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, |
1585 | tb[DCB_ATTR_FEATCFG], dcbnl_featcfg_nest, NULL); | |
7f891cf1 | 1586 | if (ret) |
7be99413 | 1587 | return ret; |
ea45fe4e | 1588 | |
7be99413 TG |
1589 | nest = nla_nest_start(skb, DCB_ATTR_FEATCFG); |
1590 | if (!nest) | |
1591 | return -EMSGSIZE; | |
ea45fe4e SR |
1592 | |
1593 | if (data[DCB_FEATCFG_ATTR_ALL]) | |
1594 | getall = 1; | |
1595 | ||
1596 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1597 | if (!getall && !data[i]) | |
1598 | continue; | |
1599 | ||
1600 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); | |
7f891cf1 | 1601 | if (!ret) |
7be99413 | 1602 | ret = nla_put_u8(skb, i, value); |
ea45fe4e | 1603 | |
7f891cf1 | 1604 | if (ret) { |
7be99413 | 1605 | nla_nest_cancel(skb, nest); |
7f891cf1 SR |
1606 | goto nla_put_failure; |
1607 | } | |
ea45fe4e | 1608 | } |
7be99413 | 1609 | nla_nest_end(skb, nest); |
ea45fe4e | 1610 | |
7f891cf1 | 1611 | nla_put_failure: |
ea45fe4e SR |
1612 | return ret; |
1613 | } | |
1614 | ||
7be99413 TG |
1615 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
1616 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
ea45fe4e SR |
1617 | { |
1618 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; | |
7f891cf1 | 1619 | int ret, i; |
ea45fe4e | 1620 | u8 value; |
ea45fe4e | 1621 | |
7f891cf1 SR |
1622 | if (!netdev->dcbnl_ops->setfeatcfg) |
1623 | return -ENOTSUPP; | |
1624 | ||
1625 | if (!tb[DCB_ATTR_FEATCFG]) | |
1626 | return -EINVAL; | |
ea45fe4e | 1627 | |
fceb6435 JB |
1628 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, |
1629 | tb[DCB_ATTR_FEATCFG], dcbnl_featcfg_nest, NULL); | |
ea45fe4e | 1630 | |
7f891cf1 | 1631 | if (ret) |
ea45fe4e | 1632 | goto err; |
ea45fe4e SR |
1633 | |
1634 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { | |
1635 | if (data[i] == NULL) | |
1636 | continue; | |
1637 | ||
1638 | value = nla_get_u8(data[i]); | |
1639 | ||
1640 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); | |
1641 | ||
1642 | if (ret) | |
7f891cf1 | 1643 | goto err; |
ea45fe4e | 1644 | } |
ea45fe4e | 1645 | err: |
7be99413 | 1646 | ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret); |
7f891cf1 | 1647 | |
ea45fe4e SR |
1648 | return ret; |
1649 | } | |
1650 | ||
dc6ed1df | 1651 | /* Handle CEE DCBX GET commands. */ |
7be99413 TG |
1652 | static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh, |
1653 | u32 seq, struct nlattr **tb, struct sk_buff *skb) | |
dc6ed1df | 1654 | { |
dc6ed1df | 1655 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
dc6ed1df SR |
1656 | |
1657 | if (!ops) | |
1658 | return -EOPNOTSUPP; | |
1659 | ||
7be99413 | 1660 | return dcbnl_cee_fill(skb, netdev); |
dc6ed1df SR |
1661 | } |
1662 | ||
33a03aad TG |
1663 | struct reply_func { |
1664 | /* reply netlink message type */ | |
1665 | int type; | |
1666 | ||
1667 | /* function to fill message contents */ | |
1668 | int (*cb)(struct net_device *, struct nlmsghdr *, u32, | |
1669 | struct nlattr **, struct sk_buff *); | |
1670 | }; | |
1671 | ||
1672 | static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = { | |
7be99413 TG |
1673 | [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate }, |
1674 | [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate }, | |
1675 | [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg }, | |
1676 | [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg }, | |
1677 | [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr }, | |
1678 | [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap }, | |
1679 | [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs }, | |
1680 | [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs }, | |
1681 | [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate }, | |
1682 | [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate }, | |
1683 | [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp }, | |
1684 | [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp }, | |
1685 | [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg }, | |
1686 | [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg }, | |
1687 | [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg }, | |
1688 | [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg }, | |
1689 | [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall }, | |
1690 | [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg }, | |
1691 | [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg }, | |
1692 | [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get }, | |
1693 | [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set }, | |
1694 | [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del }, | |
1695 | [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx }, | |
1696 | [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx }, | |
1697 | [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg }, | |
1698 | [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg }, | |
1699 | [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get }, | |
33a03aad TG |
1700 | }; |
1701 | ||
c21ef3e3 DA |
1702 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, |
1703 | struct netlink_ext_ack *extack) | |
2f90b865 AD |
1704 | { |
1705 | struct net *net = sock_net(skb->sk); | |
1706 | struct net_device *netdev; | |
7a282bc3 | 1707 | struct dcbmsg *dcb = nlmsg_data(nlh); |
2f90b865 | 1708 | struct nlattr *tb[DCB_ATTR_MAX + 1]; |
15e47304 | 1709 | u32 portid = skb ? NETLINK_CB(skb).portid : 0; |
2f90b865 | 1710 | int ret = -EINVAL; |
33a03aad | 1711 | struct sk_buff *reply_skb; |
39912f9c | 1712 | struct nlmsghdr *reply_nlh = NULL; |
33a03aad | 1713 | const struct reply_func *fn; |
2f90b865 | 1714 | |
90f62cf3 | 1715 | if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN)) |
dfc47ef8 EB |
1716 | return -EPERM; |
1717 | ||
2f90b865 | 1718 | ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, |
c21ef3e3 | 1719 | dcbnl_rtnl_policy, extack); |
2f90b865 AD |
1720 | if (ret < 0) |
1721 | return ret; | |
1722 | ||
33a03aad TG |
1723 | if (dcb->cmd > DCB_CMD_MAX) |
1724 | return -EINVAL; | |
1725 | ||
1726 | /* check if a reply function has been defined for the command */ | |
1727 | fn = &reply_funcs[dcb->cmd]; | |
1728 | if (!fn->cb) | |
1729 | return -EOPNOTSUPP; | |
1730 | ||
2f90b865 AD |
1731 | if (!tb[DCB_ATTR_IFNAME]) |
1732 | return -EINVAL; | |
1733 | ||
d9ac62be | 1734 | netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME])); |
2f90b865 | 1735 | if (!netdev) |
3d1f4869 | 1736 | return -ENODEV; |
2f90b865 | 1737 | |
d9ac62be YX |
1738 | if (!netdev->dcbnl_ops) |
1739 | return -EOPNOTSUPP; | |
2f90b865 | 1740 | |
15e47304 | 1741 | reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq, |
33a03aad | 1742 | nlh->nlmsg_flags, &reply_nlh); |
d9ac62be YX |
1743 | if (!reply_skb) |
1744 | return -ENOBUFS; | |
33a03aad TG |
1745 | |
1746 | ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb); | |
1747 | if (ret < 0) { | |
1748 | nlmsg_free(reply_skb); | |
1749 | goto out; | |
1750 | } | |
1751 | ||
1752 | nlmsg_end(reply_skb, reply_nlh); | |
1753 | ||
7c77ab24 | 1754 | ret = rtnl_unicast(reply_skb, net, portid); |
2f90b865 | 1755 | out: |
2f90b865 AD |
1756 | return ret; |
1757 | } | |
1758 | ||
716b31ab TG |
1759 | static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app, |
1760 | int ifindex, int prio) | |
1761 | { | |
1762 | struct dcb_app_type *itr; | |
1763 | ||
1764 | list_for_each_entry(itr, &dcb_app_list, list) { | |
1765 | if (itr->app.selector == app->selector && | |
1766 | itr->app.protocol == app->protocol && | |
1767 | itr->ifindex == ifindex && | |
1768 | (!prio || itr->app.priority == prio)) | |
1769 | return itr; | |
1770 | } | |
1771 | ||
1772 | return NULL; | |
1773 | } | |
1774 | ||
4e4f2f69 TG |
1775 | static int dcb_app_add(const struct dcb_app *app, int ifindex) |
1776 | { | |
1777 | struct dcb_app_type *entry; | |
1778 | ||
1779 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
1780 | if (!entry) | |
1781 | return -ENOMEM; | |
1782 | ||
1783 | memcpy(&entry->app, app, sizeof(*app)); | |
1784 | entry->ifindex = ifindex; | |
1785 | list_add(&entry->list, &dcb_app_list); | |
1786 | ||
1787 | return 0; | |
1788 | } | |
1789 | ||
9ab933ab JF |
1790 | /** |
1791 | * dcb_getapp - retrieve the DCBX application user priority | |
1792 | * | |
1793 | * On success returns a non-zero 802.1p user priority bitmap | |
1794 | * otherwise returns 0 as the invalid user priority bitmap to | |
1795 | * indicate an error. | |
1796 | */ | |
1797 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) | |
1798 | { | |
1799 | struct dcb_app_type *itr; | |
1800 | u8 prio = 0; | |
1801 | ||
52cff74e | 1802 | spin_lock_bh(&dcb_lock); |
716b31ab TG |
1803 | if ((itr = dcb_app_lookup(app, dev->ifindex, 0))) |
1804 | prio = itr->app.priority; | |
52cff74e | 1805 | spin_unlock_bh(&dcb_lock); |
9ab933ab JF |
1806 | |
1807 | return prio; | |
1808 | } | |
1809 | EXPORT_SYMBOL(dcb_getapp); | |
1810 | ||
1811 | /** | |
b6db2174 | 1812 | * dcb_setapp - add CEE dcb application data to app list |
9ab933ab | 1813 | * |
b6db2174 JF |
1814 | * Priority 0 is an invalid priority in CEE spec. This routine |
1815 | * removes applications from the app list if the priority is | |
16eecd9b | 1816 | * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap |
9ab933ab | 1817 | */ |
ab6baf98 | 1818 | int dcb_setapp(struct net_device *dev, struct dcb_app *new) |
9ab933ab JF |
1819 | { |
1820 | struct dcb_app_type *itr; | |
7ec79270 | 1821 | struct dcb_app_type event; |
4e4f2f69 | 1822 | int err = 0; |
7ec79270 | 1823 | |
e290ed81 | 1824 | event.ifindex = dev->ifindex; |
7ec79270 | 1825 | memcpy(&event.app, new, sizeof(event.app)); |
6bd0e1cb JF |
1826 | if (dev->dcbnl_ops->getdcbx) |
1827 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
9ab933ab | 1828 | |
52cff74e | 1829 | spin_lock_bh(&dcb_lock); |
9ab933ab | 1830 | /* Search for existing match and replace */ |
716b31ab TG |
1831 | if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) { |
1832 | if (new->priority) | |
1833 | itr->app.priority = new->priority; | |
1834 | else { | |
1835 | list_del(&itr->list); | |
1836 | kfree(itr); | |
9ab933ab | 1837 | } |
716b31ab | 1838 | goto out; |
9ab933ab JF |
1839 | } |
1840 | /* App type does not exist add new application type */ | |
4e4f2f69 TG |
1841 | if (new->priority) |
1842 | err = dcb_app_add(new, dev->ifindex); | |
9ab933ab | 1843 | out: |
52cff74e | 1844 | spin_unlock_bh(&dcb_lock); |
4e4f2f69 TG |
1845 | if (!err) |
1846 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); | |
1847 | return err; | |
9ab933ab JF |
1848 | } |
1849 | EXPORT_SYMBOL(dcb_setapp); | |
1850 | ||
a364c8cf JF |
1851 | /** |
1852 | * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority | |
1853 | * | |
1854 | * Helper routine which on success returns a non-zero 802.1Qaz user | |
1855 | * priority bitmap otherwise returns 0 to indicate the dcb_app was | |
1856 | * not found in APP list. | |
1857 | */ | |
1858 | u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app) | |
1859 | { | |
1860 | struct dcb_app_type *itr; | |
1861 | u8 prio = 0; | |
1862 | ||
52cff74e | 1863 | spin_lock_bh(&dcb_lock); |
716b31ab TG |
1864 | if ((itr = dcb_app_lookup(app, dev->ifindex, 0))) |
1865 | prio |= 1 << itr->app.priority; | |
52cff74e | 1866 | spin_unlock_bh(&dcb_lock); |
a364c8cf JF |
1867 | |
1868 | return prio; | |
1869 | } | |
1870 | EXPORT_SYMBOL(dcb_ieee_getapp_mask); | |
1871 | ||
b6db2174 JF |
1872 | /** |
1873 | * dcb_ieee_setapp - add IEEE dcb application data to app list | |
1874 | * | |
1875 | * This adds Application data to the list. Multiple application | |
1876 | * entries may exists for the same selector and protocol as long | |
16eecd9b AB |
1877 | * as the priorities are different. Priority is expected to be a |
1878 | * 3-bit unsigned integer | |
b6db2174 JF |
1879 | */ |
1880 | int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new) | |
1881 | { | |
b6db2174 JF |
1882 | struct dcb_app_type event; |
1883 | int err = 0; | |
1884 | ||
e290ed81 | 1885 | event.ifindex = dev->ifindex; |
b6db2174 | 1886 | memcpy(&event.app, new, sizeof(event.app)); |
6bd0e1cb JF |
1887 | if (dev->dcbnl_ops->getdcbx) |
1888 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
b6db2174 | 1889 | |
52cff74e | 1890 | spin_lock_bh(&dcb_lock); |
b6db2174 | 1891 | /* Search for existing match and abort if found */ |
716b31ab TG |
1892 | if (dcb_app_lookup(new, dev->ifindex, new->priority)) { |
1893 | err = -EEXIST; | |
1894 | goto out; | |
b6db2174 JF |
1895 | } |
1896 | ||
4e4f2f69 | 1897 | err = dcb_app_add(new, dev->ifindex); |
b6db2174 | 1898 | out: |
52cff74e | 1899 | spin_unlock_bh(&dcb_lock); |
b6db2174 JF |
1900 | if (!err) |
1901 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); | |
1902 | return err; | |
1903 | } | |
1904 | EXPORT_SYMBOL(dcb_ieee_setapp); | |
1905 | ||
f9ae7e4b JF |
1906 | /** |
1907 | * dcb_ieee_delapp - delete IEEE dcb application data from list | |
1908 | * | |
1909 | * This removes a matching APP data from the APP list | |
1910 | */ | |
1911 | int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) | |
1912 | { | |
1913 | struct dcb_app_type *itr; | |
1914 | struct dcb_app_type event; | |
1915 | int err = -ENOENT; | |
1916 | ||
e290ed81 | 1917 | event.ifindex = dev->ifindex; |
f9ae7e4b | 1918 | memcpy(&event.app, del, sizeof(event.app)); |
6bd0e1cb JF |
1919 | if (dev->dcbnl_ops->getdcbx) |
1920 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); | |
f9ae7e4b | 1921 | |
52cff74e | 1922 | spin_lock_bh(&dcb_lock); |
f9ae7e4b | 1923 | /* Search for existing match and remove it. */ |
716b31ab TG |
1924 | if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) { |
1925 | list_del(&itr->list); | |
1926 | kfree(itr); | |
1927 | err = 0; | |
f9ae7e4b JF |
1928 | } |
1929 | ||
52cff74e | 1930 | spin_unlock_bh(&dcb_lock); |
f9ae7e4b JF |
1931 | if (!err) |
1932 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); | |
1933 | return err; | |
1934 | } | |
1935 | EXPORT_SYMBOL(dcb_ieee_delapp); | |
1936 | ||
2f90b865 AD |
1937 | static int __init dcbnl_init(void) |
1938 | { | |
9ab933ab JF |
1939 | INIT_LIST_HEAD(&dcb_app_list); |
1940 | ||
c7ac8679 GR |
1941 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL); |
1942 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL); | |
2f90b865 AD |
1943 | |
1944 | return 0; | |
1945 | } | |
36b9ad80 | 1946 | device_initcall(dcbnl_init); |