1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright (c) 2008-2011, Intel Corporation. |
4 | * |
5 | * Description: Data Center Bridging netlink interface |
6 | * Author: Lucy Liu <lucy.liu@intel.com> |
7 | */ |
8 | |
9 | #include <linux/netdevice.h> |
10 | #include <linux/netlink.h> |
11 | #include <linux/slab.h> |
12 | #include <net/netlink.h> |
13 | #include <net/rtnetlink.h> |
14 | #include <linux/dcbnl.h> |
15 | #include <net/dcbevent.h> |
16 | #include <linux/rtnetlink.h> |
17 | #include <linux/init.h> |
18 | #include <net/sock.h> |
19 | |
20 | /* Data Center Bridging (DCB) is a collection of Ethernet enhancements |
21 | * intended to allow network traffic with differing requirements |
22 | * (highly reliable, no drops vs. best effort vs. low latency) to operate |
23 | * and co-exist on Ethernet. Current DCB features are: |
24 | * |
25 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a |
26 | * framework for assigning bandwidth guarantees to traffic classes. |
27 | * |
28 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which |
29 | * can work independently for each 802.1p priority. |
30 | * |
31 | * Congestion Notification - provides a mechanism for end-to-end congestion |
32 | * control for protocols which do not have built-in congestion management. |
33 | * |
34 | * More information about the emerging standards for these Ethernet features |
35 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html |
36 | * |
37 | * This file implements an rtnetlink interface to allow configuration of DCB |
38 | * features for capable devices. |
39 | */ |
40 | |
41 | /**************** DCB attribute policies *************************************/ |
42 | |
43 | /* DCB netlink attributes policy */ |
44 | static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { |
45 | [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, |
46 | [DCB_ATTR_STATE] = {.type = NLA_U8}, |
47 | [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, |
48 | [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, |
49 | [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, |
50 | [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, |
51 | [DCB_ATTR_CAP] = {.type = NLA_NESTED}, |
52 | [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, |
53 | [DCB_ATTR_BCN] = {.type = NLA_NESTED}, |
54 | [DCB_ATTR_APP] = {.type = NLA_NESTED}, |
55 | [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, |
56 | [DCB_ATTR_DCBX] = {.type = NLA_U8}, |
57 | [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, |
58 | }; |
59 | |
60 | /* DCB priority flow control to User Priority nested attributes */ |
61 | static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = { |
62 | [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, |
63 | [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, |
64 | [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, |
65 | [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, |
66 | [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, |
67 | [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, |
68 | [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, |
69 | [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, |
70 | [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, |
71 | }; |
72 | |
73 | /* DCB priority grouping nested attributes */ |
74 | static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = { |
75 | [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, |
76 | [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, |
77 | [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, |
78 | [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, |
79 | [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, |
80 | [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, |
81 | [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, |
82 | [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, |
83 | [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, |
84 | [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, |
85 | [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, |
86 | [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, |
87 | [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, |
88 | [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, |
89 | [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, |
90 | [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, |
91 | [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, |
92 | [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, |
93 | }; |
94 | |
95 | /* DCB traffic class nested attributes. */ |
96 | static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = { |
97 | [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, |
98 | [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, |
99 | [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, |
100 | [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, |
101 | [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, |
102 | }; |
103 | |
104 | /* DCB capabilities nested attributes. */ |
105 | static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = { |
106 | [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, |
107 | [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, |
108 | [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, |
109 | [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, |
110 | [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, |
111 | [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, |
112 | [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, |
113 | [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, |
114 | [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, |
115 | }; |
116 | |
117 | /* DCB capabilities nested attributes. */ |
118 | static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = { |
119 | [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, |
120 | [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, |
121 | [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, |
122 | }; |
123 | |
124 | /* DCB BCN nested attributes. */ |
125 | static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = { |
126 | [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, |
127 | [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, |
128 | [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, |
129 | [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, |
130 | [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, |
131 | [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, |
132 | [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, |
133 | [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, |
134 | [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, |
135 | [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, |
136 | [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, |
137 | [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, |
138 | [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, |
139 | [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, |
140 | [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, |
141 | [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, |
142 | [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, |
143 | [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, |
144 | [DCB_BCN_ATTR_W] = {.type = NLA_U32}, |
145 | [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, |
146 | [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, |
147 | [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, |
148 | [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, |
149 | [DCB_BCN_ATTR_C] = {.type = NLA_U32}, |
150 | [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, |
151 | }; |
152 | |
153 | /* DCB APP nested attributes. */ |
154 | static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { |
155 | [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, |
156 | [DCB_APP_ATTR_ID] = {.type = NLA_U16}, |
157 | [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, |
158 | }; |
159 | |
160 | /* IEEE 802.1Qaz nested attributes. */ |
161 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { |
162 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, |
163 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, |
164 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, |
165 | [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)}, |
166 | [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)}, |
167 | [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)}, |
168 | [DCB_ATTR_DCB_BUFFER] = {.len = sizeof(struct dcbnl_buffer)}, |
169 | [DCB_ATTR_DCB_APP_TRUST_TABLE] = {.type = NLA_NESTED}, |
170 | }; |
171 | |
172 | /* DCB number of traffic classes nested attributes. */ |
173 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { |
174 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, |
175 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, |
176 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, |
177 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, |
178 | }; |
179 | |
180 | static LIST_HEAD(dcb_app_list); |
181 | static LIST_HEAD(dcb_rewr_list); |
182 | static DEFINE_SPINLOCK(dcb_lock); |
183 | |
184 | static enum ieee_attrs_app dcbnl_app_attr_type_get(u8 selector) |
185 | { |
186 | switch (selector) { |
187 | case IEEE_8021QAZ_APP_SEL_ETHERTYPE: |
188 | case IEEE_8021QAZ_APP_SEL_STREAM: |
189 | case IEEE_8021QAZ_APP_SEL_DGRAM: |
190 | case IEEE_8021QAZ_APP_SEL_ANY: |
191 | case IEEE_8021QAZ_APP_SEL_DSCP: |
192 | return DCB_ATTR_IEEE_APP; |
193 | case DCB_APP_SEL_PCP: |
194 | return DCB_ATTR_DCB_APP; |
195 | default: |
196 | return DCB_ATTR_IEEE_APP_UNSPEC; |
197 | } |
198 | } |
199 | |
200 | static bool dcbnl_app_attr_type_validate(enum ieee_attrs_app type) |
201 | { |
202 | switch (type) { |
203 | case DCB_ATTR_IEEE_APP: |
204 | case DCB_ATTR_DCB_APP: |
205 | return true; |
206 | default: |
207 | return false; |
208 | } |
209 | } |
210 | |
211 | static bool dcbnl_app_selector_validate(enum ieee_attrs_app type, u8 selector) |
212 | { |
213 | return dcbnl_app_attr_type_get(selector) == type; |
214 | } |
215 | |
216 | static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq, |
217 | u32 flags, struct nlmsghdr **nlhp) |
218 | { |
219 | struct sk_buff *skb; |
220 | struct dcbmsg *dcb; |
221 | struct nlmsghdr *nlh; |
222 | |
223 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
224 | if (!skb) |
225 | return NULL; |
226 | |
227 | nlh = nlmsg_put(skb, portid: port, seq, type, payload: sizeof(*dcb), flags); |
228 | BUG_ON(!nlh); |
229 | |
230 | dcb = nlmsg_data(nlh); |
231 | dcb->dcb_family = AF_UNSPEC; |
232 | dcb->cmd = cmd; |
233 | dcb->dcb_pad = 0; |
234 | |
235 | if (nlhp) |
236 | *nlhp = nlh; |
237 | |
238 | return skb; |
239 | } |
240 | |
241 | static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh, |
242 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
243 | { |
244 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ |
245 | if (!netdev->dcbnl_ops->getstate) |
246 | return -EOPNOTSUPP; |
247 | |
248 | return nla_put_u8(skb, attrtype: DCB_ATTR_STATE, |
249 | value: netdev->dcbnl_ops->getstate(netdev)); |
250 | } |
251 | |
252 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, |
253 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
254 | { |
255 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; |
256 | u8 value; |
257 | int ret; |
258 | int i; |
259 | int getall = 0; |
260 | |
261 | if (!tb[DCB_ATTR_PFC_CFG]) |
262 | return -EINVAL; |
263 | |
264 | if (!netdev->dcbnl_ops->getpfccfg) |
265 | return -EOPNOTSUPP; |
266 | |
267 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_PFC_UP_ATTR_MAX, |
268 | nla: tb[DCB_ATTR_PFC_CFG], |
269 | policy: dcbnl_pfc_up_nest, NULL); |
270 | if (ret) |
271 | return ret; |
272 | |
273 | nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_PFC_CFG); |
274 | if (!nest) |
275 | return -EMSGSIZE; |
276 | |
277 | if (data[DCB_PFC_UP_ATTR_ALL]) |
278 | getall = 1; |
279 | |
280 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
281 | if (!getall && !data[i]) |
282 | continue; |
283 | |
284 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, |
285 | &value); |
286 | ret = nla_put_u8(skb, attrtype: i, value); |
287 | if (ret) { |
288 | nla_nest_cancel(skb, start: nest); |
289 | return ret; |
290 | } |
291 | } |
292 | nla_nest_end(skb, start: nest); |
293 | |
294 | return 0; |
295 | } |
296 | |
297 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh, |
298 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
299 | { |
300 | u8 perm_addr[MAX_ADDR_LEN]; |
301 | |
302 | if (!netdev->dcbnl_ops->getpermhwaddr) |
303 | return -EOPNOTSUPP; |
304 | |
305 | memset(perm_addr, 0, sizeof(perm_addr)); |
306 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); |
307 | |
308 | return nla_put(skb, attrtype: DCB_ATTR_PERM_HWADDR, attrlen: sizeof(perm_addr), data: perm_addr); |
309 | } |
310 | |
311 | static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh, |
312 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
313 | { |
314 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; |
315 | u8 value; |
316 | int ret; |
317 | int i; |
318 | int getall = 0; |
319 | |
320 | if (!tb[DCB_ATTR_CAP]) |
321 | return -EINVAL; |
322 | |
323 | if (!netdev->dcbnl_ops->getcap) |
324 | return -EOPNOTSUPP; |
325 | |
326 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_CAP_ATTR_MAX, |
327 | nla: tb[DCB_ATTR_CAP], policy: dcbnl_cap_nest, |
328 | NULL); |
329 | if (ret) |
330 | return ret; |
331 | |
332 | nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_CAP); |
333 | if (!nest) |
334 | return -EMSGSIZE; |
335 | |
336 | if (data[DCB_CAP_ATTR_ALL]) |
337 | getall = 1; |
338 | |
339 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { |
340 | if (!getall && !data[i]) |
341 | continue; |
342 | |
343 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { |
344 | ret = nla_put_u8(skb, attrtype: i, value); |
345 | if (ret) { |
346 | nla_nest_cancel(skb, start: nest); |
347 | return ret; |
348 | } |
349 | } |
350 | } |
351 | nla_nest_end(skb, start: nest); |
352 | |
353 | return 0; |
354 | } |
355 | |
356 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, |
357 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
358 | { |
359 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; |
360 | u8 value; |
361 | int ret; |
362 | int i; |
363 | int getall = 0; |
364 | |
365 | if (!tb[DCB_ATTR_NUMTCS]) |
366 | return -EINVAL; |
367 | |
368 | if (!netdev->dcbnl_ops->getnumtcs) |
369 | return -EOPNOTSUPP; |
370 | |
371 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_NUMTCS_ATTR_MAX, |
372 | nla: tb[DCB_ATTR_NUMTCS], |
373 | policy: dcbnl_numtcs_nest, NULL); |
374 | if (ret) |
375 | return ret; |
376 | |
377 | nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_NUMTCS); |
378 | if (!nest) |
379 | return -EMSGSIZE; |
380 | |
381 | if (data[DCB_NUMTCS_ATTR_ALL]) |
382 | getall = 1; |
383 | |
384 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
385 | if (!getall && !data[i]) |
386 | continue; |
387 | |
388 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); |
389 | if (!ret) { |
390 | ret = nla_put_u8(skb, attrtype: i, value); |
391 | if (ret) { |
392 | nla_nest_cancel(skb, start: nest); |
393 | return ret; |
394 | } |
395 | } else |
396 | return -EINVAL; |
397 | } |
398 | nla_nest_end(skb, start: nest); |
399 | |
400 | return 0; |
401 | } |
402 | |
403 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, |
404 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
405 | { |
406 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; |
407 | int ret; |
408 | u8 value; |
409 | int i; |
410 | |
411 | if (!tb[DCB_ATTR_NUMTCS]) |
412 | return -EINVAL; |
413 | |
414 | if (!netdev->dcbnl_ops->setnumtcs) |
415 | return -EOPNOTSUPP; |
416 | |
417 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_NUMTCS_ATTR_MAX, |
418 | nla: tb[DCB_ATTR_NUMTCS], |
419 | policy: dcbnl_numtcs_nest, NULL); |
420 | if (ret) |
421 | return ret; |
422 | |
423 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
424 | if (data[i] == NULL) |
425 | continue; |
426 | |
427 | value = nla_get_u8(nla: data[i]); |
428 | |
429 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); |
430 | if (ret) |
431 | break; |
432 | } |
433 | |
434 | return nla_put_u8(skb, attrtype: DCB_ATTR_NUMTCS, value: !!ret); |
435 | } |
436 | |
437 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, |
438 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
439 | { |
440 | if (!netdev->dcbnl_ops->getpfcstate) |
441 | return -EOPNOTSUPP; |
442 | |
443 | return nla_put_u8(skb, attrtype: DCB_ATTR_PFC_STATE, |
444 | value: netdev->dcbnl_ops->getpfcstate(netdev)); |
445 | } |
446 | |
447 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, |
448 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
449 | { |
450 | u8 value; |
451 | |
452 | if (!tb[DCB_ATTR_PFC_STATE]) |
453 | return -EINVAL; |
454 | |
455 | if (!netdev->dcbnl_ops->setpfcstate) |
456 | return -EOPNOTSUPP; |
457 | |
458 | value = nla_get_u8(nla: tb[DCB_ATTR_PFC_STATE]); |
459 | |
460 | netdev->dcbnl_ops->setpfcstate(netdev, value); |
461 | |
462 | return nla_put_u8(skb, attrtype: DCB_ATTR_PFC_STATE, value: 0); |
463 | } |
464 | |
465 | static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh, |
466 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
467 | { |
468 | struct nlattr *app_nest; |
469 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
470 | u16 id; |
471 | u8 up, idtype; |
472 | int ret; |
473 | |
474 | if (!tb[DCB_ATTR_APP]) |
475 | return -EINVAL; |
476 | |
477 | ret = nla_parse_nested_deprecated(tb: app_tb, maxtype: DCB_APP_ATTR_MAX, |
478 | nla: tb[DCB_ATTR_APP], policy: dcbnl_app_nest, |
479 | NULL); |
480 | if (ret) |
481 | return ret; |
482 | |
483 | /* all must be non-null */ |
484 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
485 | (!app_tb[DCB_APP_ATTR_ID])) |
486 | return -EINVAL; |
487 | |
488 | /* either by eth type or by socket number */ |
489 | idtype = nla_get_u8(nla: app_tb[DCB_APP_ATTR_IDTYPE]); |
490 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
491 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
492 | return -EINVAL; |
493 | |
494 | id = nla_get_u16(nla: app_tb[DCB_APP_ATTR_ID]); |
495 | |
496 | if (netdev->dcbnl_ops->getapp) { |
497 | ret = netdev->dcbnl_ops->getapp(netdev, idtype, id); |
498 | if (ret < 0) |
499 | return ret; |
500 | else |
501 | up = ret; |
502 | } else { |
503 | struct dcb_app app = { |
504 | .selector = idtype, |
505 | .protocol = id, |
506 | }; |
507 | up = dcb_getapp(netdev, &app); |
508 | } |
509 | |
510 | app_nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_APP); |
511 | if (!app_nest) |
512 | return -EMSGSIZE; |
513 | |
514 | ret = nla_put_u8(skb, attrtype: DCB_APP_ATTR_IDTYPE, value: idtype); |
515 | if (ret) |
516 | goto out_cancel; |
517 | |
518 | ret = nla_put_u16(skb, attrtype: DCB_APP_ATTR_ID, value: id); |
519 | if (ret) |
520 | goto out_cancel; |
521 | |
522 | ret = nla_put_u8(skb, attrtype: DCB_APP_ATTR_PRIORITY, value: up); |
523 | if (ret) |
524 | goto out_cancel; |
525 | |
526 | nla_nest_end(skb, start: app_nest); |
527 | |
528 | return 0; |
529 | |
530 | out_cancel: |
531 | nla_nest_cancel(skb, start: app_nest); |
532 | return ret; |
533 | } |
534 | |
535 | static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh, |
536 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
537 | { |
538 | int ret; |
539 | u16 id; |
540 | u8 up, idtype; |
541 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
542 | |
543 | if (!tb[DCB_ATTR_APP]) |
544 | return -EINVAL; |
545 | |
546 | ret = nla_parse_nested_deprecated(tb: app_tb, maxtype: DCB_APP_ATTR_MAX, |
547 | nla: tb[DCB_ATTR_APP], policy: dcbnl_app_nest, |
548 | NULL); |
549 | if (ret) |
550 | return ret; |
551 | |
552 | /* all must be non-null */ |
553 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
554 | (!app_tb[DCB_APP_ATTR_ID]) || |
555 | (!app_tb[DCB_APP_ATTR_PRIORITY])) |
556 | return -EINVAL; |
557 | |
558 | /* either by eth type or by socket number */ |
559 | idtype = nla_get_u8(nla: app_tb[DCB_APP_ATTR_IDTYPE]); |
560 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
561 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
562 | return -EINVAL; |
563 | |
564 | id = nla_get_u16(nla: app_tb[DCB_APP_ATTR_ID]); |
565 | up = nla_get_u8(nla: app_tb[DCB_APP_ATTR_PRIORITY]); |
566 | |
567 | if (netdev->dcbnl_ops->setapp) { |
568 | ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); |
569 | if (ret < 0) |
570 | return ret; |
571 | } else { |
572 | struct dcb_app app; |
573 | app.selector = idtype; |
574 | app.protocol = id; |
575 | app.priority = up; |
576 | ret = dcb_setapp(netdev, &app); |
577 | } |
578 | |
579 | ret = nla_put_u8(skb, attrtype: DCB_ATTR_APP, value: ret); |
580 | dcbnl_cee_notify(dev: netdev, RTM_SETDCB, cmd: DCB_CMD_SAPP, seq, pid: 0); |
581 | |
582 | return ret; |
583 | } |
584 | |
585 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
586 | struct nlattr **tb, struct sk_buff *skb, int dir) |
587 | { |
588 | struct nlattr *pg_nest, *param_nest, *data; |
589 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
590 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
591 | u8 prio, pgid, tc_pct, up_map; |
592 | int ret; |
593 | int getall = 0; |
594 | int i; |
595 | |
596 | if (!tb[DCB_ATTR_PG_CFG]) |
597 | return -EINVAL; |
598 | |
599 | if (!netdev->dcbnl_ops->getpgtccfgtx || |
600 | !netdev->dcbnl_ops->getpgtccfgrx || |
601 | !netdev->dcbnl_ops->getpgbwgcfgtx || |
602 | !netdev->dcbnl_ops->getpgbwgcfgrx) |
603 | return -EOPNOTSUPP; |
604 | |
605 | ret = nla_parse_nested_deprecated(tb: pg_tb, maxtype: DCB_PG_ATTR_MAX, |
606 | nla: tb[DCB_ATTR_PG_CFG], policy: dcbnl_pg_nest, |
607 | NULL); |
608 | if (ret) |
609 | return ret; |
610 | |
611 | pg_nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_PG_CFG); |
612 | if (!pg_nest) |
613 | return -EMSGSIZE; |
614 | |
615 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
616 | getall = 1; |
617 | |
618 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
619 | if (!getall && !pg_tb[i]) |
620 | continue; |
621 | |
622 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
623 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; |
624 | else |
625 | data = pg_tb[i]; |
626 | ret = nla_parse_nested_deprecated(tb: param_tb, |
627 | maxtype: DCB_TC_ATTR_PARAM_MAX, nla: data, |
628 | policy: dcbnl_tc_param_nest, NULL); |
629 | if (ret) |
630 | goto err_pg; |
631 | |
632 | param_nest = nla_nest_start_noflag(skb, attrtype: i); |
633 | if (!param_nest) |
634 | goto err_pg; |
635 | |
636 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
637 | prio = DCB_ATTR_VALUE_UNDEFINED; |
638 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
639 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
640 | |
641 | if (dir) { |
642 | /* Rx */ |
643 | netdev->dcbnl_ops->getpgtccfgrx(netdev, |
644 | i - DCB_PG_ATTR_TC_0, &prio, |
645 | &pgid, &tc_pct, &up_map); |
646 | } else { |
647 | /* Tx */ |
648 | netdev->dcbnl_ops->getpgtccfgtx(netdev, |
649 | i - DCB_PG_ATTR_TC_0, &prio, |
650 | &pgid, &tc_pct, &up_map); |
651 | } |
652 | |
653 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || |
654 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
655 | ret = nla_put_u8(skb, |
656 | attrtype: DCB_TC_ATTR_PARAM_PGID, value: pgid); |
657 | if (ret) |
658 | goto err_param; |
659 | } |
660 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || |
661 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
662 | ret = nla_put_u8(skb, |
663 | attrtype: DCB_TC_ATTR_PARAM_UP_MAPPING, value: up_map); |
664 | if (ret) |
665 | goto err_param; |
666 | } |
667 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || |
668 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
669 | ret = nla_put_u8(skb, |
670 | attrtype: DCB_TC_ATTR_PARAM_STRICT_PRIO, value: prio); |
671 | if (ret) |
672 | goto err_param; |
673 | } |
674 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || |
675 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
676 | ret = nla_put_u8(skb, attrtype: DCB_TC_ATTR_PARAM_BW_PCT, |
677 | value: tc_pct); |
678 | if (ret) |
679 | goto err_param; |
680 | } |
681 | nla_nest_end(skb, start: param_nest); |
682 | } |
683 | |
684 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) |
685 | getall = 1; |
686 | else |
687 | getall = 0; |
688 | |
689 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
690 | if (!getall && !pg_tb[i]) |
691 | continue; |
692 | |
693 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
694 | |
695 | if (dir) { |
696 | /* Rx */ |
697 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, |
698 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
699 | } else { |
700 | /* Tx */ |
701 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, |
702 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
703 | } |
704 | ret = nla_put_u8(skb, attrtype: i, value: tc_pct); |
705 | if (ret) |
706 | goto err_pg; |
707 | } |
708 | |
709 | nla_nest_end(skb, start: pg_nest); |
710 | |
711 | return 0; |
712 | |
713 | err_param: |
714 | nla_nest_cancel(skb, start: param_nest); |
715 | err_pg: |
716 | nla_nest_cancel(skb, start: pg_nest); |
717 | |
718 | return -EMSGSIZE; |
719 | } |
720 | |
721 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
722 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
723 | { |
724 | return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, dir: 0); |
725 | } |
726 | |
727 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
728 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
729 | { |
730 | return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, dir: 1); |
731 | } |
732 | |
733 | static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh, |
734 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
735 | { |
736 | u8 value; |
737 | |
738 | if (!tb[DCB_ATTR_STATE]) |
739 | return -EINVAL; |
740 | |
741 | if (!netdev->dcbnl_ops->setstate) |
742 | return -EOPNOTSUPP; |
743 | |
744 | value = nla_get_u8(nla: tb[DCB_ATTR_STATE]); |
745 | |
746 | return nla_put_u8(skb, attrtype: DCB_ATTR_STATE, |
747 | value: netdev->dcbnl_ops->setstate(netdev, value)); |
748 | } |
749 | |
750 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, |
751 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
752 | { |
753 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; |
754 | int i; |
755 | int ret; |
756 | u8 value; |
757 | |
758 | if (!tb[DCB_ATTR_PFC_CFG]) |
759 | return -EINVAL; |
760 | |
761 | if (!netdev->dcbnl_ops->setpfccfg) |
762 | return -EOPNOTSUPP; |
763 | |
764 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_PFC_UP_ATTR_MAX, |
765 | nla: tb[DCB_ATTR_PFC_CFG], |
766 | policy: dcbnl_pfc_up_nest, NULL); |
767 | if (ret) |
768 | return ret; |
769 | |
770 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
771 | if (data[i] == NULL) |
772 | continue; |
773 | value = nla_get_u8(nla: data[i]); |
774 | netdev->dcbnl_ops->setpfccfg(netdev, |
775 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); |
776 | } |
777 | |
778 | return nla_put_u8(skb, attrtype: DCB_ATTR_PFC_CFG, value: 0); |
779 | } |
780 | |
781 | static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh, |
782 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
783 | { |
784 | int ret; |
785 | |
786 | if (!tb[DCB_ATTR_SET_ALL]) |
787 | return -EINVAL; |
788 | |
789 | if (!netdev->dcbnl_ops->setall) |
790 | return -EOPNOTSUPP; |
791 | |
792 | ret = nla_put_u8(skb, attrtype: DCB_ATTR_SET_ALL, |
793 | value: netdev->dcbnl_ops->setall(netdev)); |
794 | dcbnl_cee_notify(dev: netdev, RTM_SETDCB, cmd: DCB_CMD_SET_ALL, seq, pid: 0); |
795 | |
796 | return ret; |
797 | } |
798 | |
799 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
800 | u32 seq, struct nlattr **tb, struct sk_buff *skb, |
801 | int dir) |
802 | { |
803 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
804 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
805 | int ret; |
806 | int i; |
807 | u8 pgid; |
808 | u8 up_map; |
809 | u8 prio; |
810 | u8 tc_pct; |
811 | |
812 | if (!tb[DCB_ATTR_PG_CFG]) |
813 | return -EINVAL; |
814 | |
815 | if (!netdev->dcbnl_ops->setpgtccfgtx || |
816 | !netdev->dcbnl_ops->setpgtccfgrx || |
817 | !netdev->dcbnl_ops->setpgbwgcfgtx || |
818 | !netdev->dcbnl_ops->setpgbwgcfgrx) |
819 | return -EOPNOTSUPP; |
820 | |
821 | ret = nla_parse_nested_deprecated(tb: pg_tb, maxtype: DCB_PG_ATTR_MAX, |
822 | nla: tb[DCB_ATTR_PG_CFG], policy: dcbnl_pg_nest, |
823 | NULL); |
824 | if (ret) |
825 | return ret; |
826 | |
827 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
828 | if (!pg_tb[i]) |
829 | continue; |
830 | |
831 | ret = nla_parse_nested_deprecated(tb: param_tb, |
832 | maxtype: DCB_TC_ATTR_PARAM_MAX, |
833 | nla: pg_tb[i], |
834 | policy: dcbnl_tc_param_nest, NULL); |
835 | if (ret) |
836 | return ret; |
837 | |
838 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
839 | prio = DCB_ATTR_VALUE_UNDEFINED; |
840 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
841 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
842 | |
843 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) |
844 | prio = |
845 | nla_get_u8(nla: param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); |
846 | |
847 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) |
848 | pgid = nla_get_u8(nla: param_tb[DCB_TC_ATTR_PARAM_PGID]); |
849 | |
850 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) |
851 | tc_pct = nla_get_u8(nla: param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); |
852 | |
853 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) |
854 | up_map = |
855 | nla_get_u8(nla: param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); |
856 | |
857 | /* dir: Tx = 0, Rx = 1 */ |
858 | if (dir) { |
859 | /* Rx */ |
860 | netdev->dcbnl_ops->setpgtccfgrx(netdev, |
861 | i - DCB_PG_ATTR_TC_0, |
862 | prio, pgid, tc_pct, up_map); |
863 | } else { |
864 | /* Tx */ |
865 | netdev->dcbnl_ops->setpgtccfgtx(netdev, |
866 | i - DCB_PG_ATTR_TC_0, |
867 | prio, pgid, tc_pct, up_map); |
868 | } |
869 | } |
870 | |
871 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
872 | if (!pg_tb[i]) |
873 | continue; |
874 | |
875 | tc_pct = nla_get_u8(nla: pg_tb[i]); |
876 | |
877 | /* dir: Tx = 0, Rx = 1 */ |
878 | if (dir) { |
879 | /* Rx */ |
880 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, |
881 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
882 | } else { |
883 | /* Tx */ |
884 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, |
885 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
886 | } |
887 | } |
888 | |
889 | return nla_put_u8(skb, attrtype: DCB_ATTR_PG_CFG, value: 0); |
890 | } |
891 | |
892 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
893 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
894 | { |
895 | return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, dir: 0); |
896 | } |
897 | |
898 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
899 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
900 | { |
901 | return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, dir: 1); |
902 | } |
903 | |
904 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
905 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
906 | { |
907 | struct nlattr *bcn_nest; |
908 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; |
909 | u8 value_byte; |
910 | u32 value_integer; |
911 | int ret; |
912 | bool getall = false; |
913 | int i; |
914 | |
915 | if (!tb[DCB_ATTR_BCN]) |
916 | return -EINVAL; |
917 | |
918 | if (!netdev->dcbnl_ops->getbcnrp || |
919 | !netdev->dcbnl_ops->getbcncfg) |
920 | return -EOPNOTSUPP; |
921 | |
922 | ret = nla_parse_nested_deprecated(tb: bcn_tb, maxtype: DCB_BCN_ATTR_MAX, |
923 | nla: tb[DCB_ATTR_BCN], policy: dcbnl_bcn_nest, |
924 | NULL); |
925 | if (ret) |
926 | return ret; |
927 | |
928 | bcn_nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_BCN); |
929 | if (!bcn_nest) |
930 | return -EMSGSIZE; |
931 | |
932 | if (bcn_tb[DCB_BCN_ATTR_ALL]) |
933 | getall = true; |
934 | |
935 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
936 | if (!getall && !bcn_tb[i]) |
937 | continue; |
938 | |
939 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, |
940 | &value_byte); |
941 | ret = nla_put_u8(skb, attrtype: i, value: value_byte); |
942 | if (ret) |
943 | goto err_bcn; |
944 | } |
945 | |
946 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
947 | if (!getall && !bcn_tb[i]) |
948 | continue; |
949 | |
950 | netdev->dcbnl_ops->getbcncfg(netdev, i, |
951 | &value_integer); |
952 | ret = nla_put_u32(skb, attrtype: i, value: value_integer); |
953 | if (ret) |
954 | goto err_bcn; |
955 | } |
956 | |
957 | nla_nest_end(skb, start: bcn_nest); |
958 | |
959 | return 0; |
960 | |
961 | err_bcn: |
962 | nla_nest_cancel(skb, start: bcn_nest); |
963 | return ret; |
964 | } |
965 | |
966 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
967 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
968 | { |
969 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; |
970 | int i; |
971 | int ret; |
972 | u8 value_byte; |
973 | u32 value_int; |
974 | |
975 | if (!tb[DCB_ATTR_BCN]) |
976 | return -EINVAL; |
977 | |
978 | if (!netdev->dcbnl_ops->setbcncfg || |
979 | !netdev->dcbnl_ops->setbcnrp) |
980 | return -EOPNOTSUPP; |
981 | |
982 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_BCN_ATTR_MAX, |
983 | nla: tb[DCB_ATTR_BCN], policy: dcbnl_bcn_nest, |
984 | NULL); |
985 | if (ret) |
986 | return ret; |
987 | |
988 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
989 | if (data[i] == NULL) |
990 | continue; |
991 | value_byte = nla_get_u8(nla: data[i]); |
992 | netdev->dcbnl_ops->setbcnrp(netdev, |
993 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); |
994 | } |
995 | |
996 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
997 | if (data[i] == NULL) |
998 | continue; |
999 | value_int = nla_get_u32(nla: data[i]); |
1000 | netdev->dcbnl_ops->setbcncfg(netdev, |
1001 | i, value_int); |
1002 | } |
1003 | |
1004 | return nla_put_u8(skb, attrtype: DCB_ATTR_BCN, value: 0); |
1005 | } |
1006 | |
1007 | static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, |
1008 | int app_nested_type, int app_info_type, |
1009 | int app_entry_type) |
1010 | { |
1011 | struct dcb_peer_app_info info; |
1012 | struct dcb_app *table = NULL; |
1013 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1014 | u16 app_count; |
1015 | int err; |
1016 | |
1017 | |
1018 | /** |
1019 | * retrieve the peer app configuration form the driver. If the driver |
1020 | * handlers fail exit without doing anything |
1021 | */ |
1022 | err = ops->peer_getappinfo(netdev, &info, &app_count); |
1023 | if (!err && app_count) { |
1024 | table = kmalloc_array(n: app_count, size: sizeof(struct dcb_app), |
1025 | GFP_KERNEL); |
1026 | if (!table) |
1027 | return -ENOMEM; |
1028 | |
1029 | err = ops->peer_getapptable(netdev, table); |
1030 | } |
1031 | |
1032 | if (!err) { |
1033 | u16 i; |
1034 | struct nlattr *app; |
1035 | |
1036 | /** |
1037 | * build the message, from here on the only possible failure |
1038 | * is due to the skb size |
1039 | */ |
1040 | err = -EMSGSIZE; |
1041 | |
1042 | app = nla_nest_start_noflag(skb, attrtype: app_nested_type); |
1043 | if (!app) |
1044 | goto nla_put_failure; |
1045 | |
1046 | if (app_info_type && |
1047 | nla_put(skb, attrtype: app_info_type, attrlen: sizeof(info), data: &info)) |
1048 | goto nla_put_failure; |
1049 | |
1050 | for (i = 0; i < app_count; i++) { |
1051 | if (nla_put(skb, attrtype: app_entry_type, attrlen: sizeof(struct dcb_app), |
1052 | data: &table[i])) |
1053 | goto nla_put_failure; |
1054 | } |
1055 | nla_nest_end(skb, start: app); |
1056 | } |
1057 | err = 0; |
1058 | |
1059 | nla_put_failure: |
1060 | kfree(objp: table); |
1061 | return err; |
1062 | } |
1063 | |
1064 | static int dcbnl_getapptrust(struct net_device *netdev, struct sk_buff *skb) |
1065 | { |
1066 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1067 | enum ieee_attrs_app type; |
1068 | struct nlattr *apptrust; |
1069 | int nselectors, err, i; |
1070 | u8 *selectors; |
1071 | |
1072 | selectors = kzalloc(IEEE_8021QAZ_APP_SEL_MAX + 1, GFP_KERNEL); |
1073 | if (!selectors) |
1074 | return -ENOMEM; |
1075 | |
1076 | err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors); |
1077 | if (err) { |
1078 | err = 0; |
1079 | goto out; |
1080 | } |
1081 | |
1082 | apptrust = nla_nest_start(skb, attrtype: DCB_ATTR_DCB_APP_TRUST_TABLE); |
1083 | if (!apptrust) { |
1084 | err = -EMSGSIZE; |
1085 | goto out; |
1086 | } |
1087 | |
1088 | for (i = 0; i < nselectors; i++) { |
1089 | type = dcbnl_app_attr_type_get(selector: selectors[i]); |
1090 | err = nla_put_u8(skb, attrtype: type, value: selectors[i]); |
1091 | if (err) { |
1092 | nla_nest_cancel(skb, start: apptrust); |
1093 | goto out; |
1094 | } |
1095 | } |
1096 | nla_nest_end(skb, start: apptrust); |
1097 | |
1098 | out: |
1099 | kfree(objp: selectors); |
1100 | return err; |
1101 | } |
1102 | |
1103 | /* Set or delete APP table or rewrite table entries. The APP struct is validated |
1104 | * and the appropriate callback function is called. |
1105 | */ |
1106 | static int dcbnl_app_table_setdel(struct nlattr *attr, |
1107 | struct net_device *netdev, |
1108 | int (*setdel)(struct net_device *dev, |
1109 | struct dcb_app *app)) |
1110 | { |
1111 | struct dcb_app *app_data; |
1112 | enum ieee_attrs_app type; |
1113 | struct nlattr *attr_itr; |
1114 | int rem, err; |
1115 | |
1116 | nla_for_each_nested(attr_itr, attr, rem) { |
1117 | type = nla_type(nla: attr_itr); |
1118 | |
1119 | if (!dcbnl_app_attr_type_validate(type)) |
1120 | continue; |
1121 | |
1122 | if (nla_len(nla: attr_itr) < sizeof(struct dcb_app)) |
1123 | return -ERANGE; |
1124 | |
1125 | app_data = nla_data(nla: attr_itr); |
1126 | |
1127 | if (!dcbnl_app_selector_validate(type, selector: app_data->selector)) |
1128 | return -EINVAL; |
1129 | |
1130 | err = setdel(netdev, app_data); |
1131 | if (err) |
1132 | return err; |
1133 | } |
1134 | |
1135 | return 0; |
1136 | } |
1137 | |
1138 | /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */ |
1139 | static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) |
1140 | { |
1141 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1142 | struct nlattr *ieee, *app, *rewr; |
1143 | struct dcb_app_type *itr; |
1144 | int dcbx; |
1145 | int err; |
1146 | |
1147 | if (nla_put_string(skb, attrtype: DCB_ATTR_IFNAME, str: netdev->name)) |
1148 | return -EMSGSIZE; |
1149 | |
1150 | ieee = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_IEEE); |
1151 | if (!ieee) |
1152 | return -EMSGSIZE; |
1153 | |
1154 | if (ops->ieee_getets) { |
1155 | struct ieee_ets ets; |
1156 | memset(&ets, 0, sizeof(ets)); |
1157 | err = ops->ieee_getets(netdev, &ets); |
1158 | if (!err && |
1159 | nla_put(skb, attrtype: DCB_ATTR_IEEE_ETS, attrlen: sizeof(ets), data: &ets)) |
1160 | return -EMSGSIZE; |
1161 | } |
1162 | |
1163 | if (ops->ieee_getmaxrate) { |
1164 | struct ieee_maxrate maxrate; |
1165 | memset(&maxrate, 0, sizeof(maxrate)); |
1166 | err = ops->ieee_getmaxrate(netdev, &maxrate); |
1167 | if (!err) { |
1168 | err = nla_put(skb, attrtype: DCB_ATTR_IEEE_MAXRATE, |
1169 | attrlen: sizeof(maxrate), data: &maxrate); |
1170 | if (err) |
1171 | return -EMSGSIZE; |
1172 | } |
1173 | } |
1174 | |
1175 | if (ops->ieee_getqcn) { |
1176 | struct ieee_qcn qcn; |
1177 | |
1178 | memset(&qcn, 0, sizeof(qcn)); |
1179 | err = ops->ieee_getqcn(netdev, &qcn); |
1180 | if (!err) { |
1181 | err = nla_put(skb, attrtype: DCB_ATTR_IEEE_QCN, |
1182 | attrlen: sizeof(qcn), data: &qcn); |
1183 | if (err) |
1184 | return -EMSGSIZE; |
1185 | } |
1186 | } |
1187 | |
1188 | if (ops->ieee_getqcnstats) { |
1189 | struct ieee_qcn_stats qcn_stats; |
1190 | |
1191 | memset(&qcn_stats, 0, sizeof(qcn_stats)); |
1192 | err = ops->ieee_getqcnstats(netdev, &qcn_stats); |
1193 | if (!err) { |
1194 | err = nla_put(skb, attrtype: DCB_ATTR_IEEE_QCN_STATS, |
1195 | attrlen: sizeof(qcn_stats), data: &qcn_stats); |
1196 | if (err) |
1197 | return -EMSGSIZE; |
1198 | } |
1199 | } |
1200 | |
1201 | if (ops->ieee_getpfc) { |
1202 | struct ieee_pfc pfc; |
1203 | memset(&pfc, 0, sizeof(pfc)); |
1204 | err = ops->ieee_getpfc(netdev, &pfc); |
1205 | if (!err && |
1206 | nla_put(skb, attrtype: DCB_ATTR_IEEE_PFC, attrlen: sizeof(pfc), data: &pfc)) |
1207 | return -EMSGSIZE; |
1208 | } |
1209 | |
1210 | if (ops->dcbnl_getbuffer) { |
1211 | struct dcbnl_buffer buffer; |
1212 | |
1213 | memset(&buffer, 0, sizeof(buffer)); |
1214 | err = ops->dcbnl_getbuffer(netdev, &buffer); |
1215 | if (!err && |
1216 | nla_put(skb, attrtype: DCB_ATTR_DCB_BUFFER, attrlen: sizeof(buffer), data: &buffer)) |
1217 | return -EMSGSIZE; |
1218 | } |
1219 | |
1220 | app = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_IEEE_APP_TABLE); |
1221 | if (!app) |
1222 | return -EMSGSIZE; |
1223 | |
1224 | spin_lock_bh(lock: &dcb_lock); |
1225 | list_for_each_entry(itr, &dcb_app_list, list) { |
1226 | if (itr->ifindex == netdev->ifindex) { |
1227 | enum ieee_attrs_app type = |
1228 | dcbnl_app_attr_type_get(selector: itr->app.selector); |
1229 | err = nla_put(skb, attrtype: type, attrlen: sizeof(itr->app), data: &itr->app); |
1230 | if (err) { |
1231 | spin_unlock_bh(lock: &dcb_lock); |
1232 | return -EMSGSIZE; |
1233 | } |
1234 | } |
1235 | } |
1236 | |
1237 | if (netdev->dcbnl_ops->getdcbx) |
1238 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); |
1239 | else |
1240 | dcbx = -EOPNOTSUPP; |
1241 | |
1242 | spin_unlock_bh(lock: &dcb_lock); |
1243 | nla_nest_end(skb, start: app); |
1244 | |
1245 | rewr = nla_nest_start(skb, attrtype: DCB_ATTR_DCB_REWR_TABLE); |
1246 | if (!rewr) |
1247 | return -EMSGSIZE; |
1248 | |
1249 | spin_lock_bh(lock: &dcb_lock); |
1250 | list_for_each_entry(itr, &dcb_rewr_list, list) { |
1251 | if (itr->ifindex == netdev->ifindex) { |
1252 | enum ieee_attrs_app type = |
1253 | dcbnl_app_attr_type_get(selector: itr->app.selector); |
1254 | err = nla_put(skb, attrtype: type, attrlen: sizeof(itr->app), data: &itr->app); |
1255 | if (err) { |
1256 | spin_unlock_bh(lock: &dcb_lock); |
1257 | nla_nest_cancel(skb, start: rewr); |
1258 | return -EMSGSIZE; |
1259 | } |
1260 | } |
1261 | } |
1262 | |
1263 | spin_unlock_bh(lock: &dcb_lock); |
1264 | nla_nest_end(skb, start: rewr); |
1265 | |
1266 | if (ops->dcbnl_getapptrust) { |
1267 | err = dcbnl_getapptrust(netdev, skb); |
1268 | if (err) |
1269 | return err; |
1270 | } |
1271 | |
1272 | /* get peer info if available */ |
1273 | if (ops->ieee_peer_getets) { |
1274 | struct ieee_ets ets; |
1275 | memset(&ets, 0, sizeof(ets)); |
1276 | err = ops->ieee_peer_getets(netdev, &ets); |
1277 | if (!err && |
1278 | nla_put(skb, attrtype: DCB_ATTR_IEEE_PEER_ETS, attrlen: sizeof(ets), data: &ets)) |
1279 | return -EMSGSIZE; |
1280 | } |
1281 | |
1282 | if (ops->ieee_peer_getpfc) { |
1283 | struct ieee_pfc pfc; |
1284 | memset(&pfc, 0, sizeof(pfc)); |
1285 | err = ops->ieee_peer_getpfc(netdev, &pfc); |
1286 | if (!err && |
1287 | nla_put(skb, attrtype: DCB_ATTR_IEEE_PEER_PFC, attrlen: sizeof(pfc), data: &pfc)) |
1288 | return -EMSGSIZE; |
1289 | } |
1290 | |
1291 | if (ops->peer_getappinfo && ops->peer_getapptable) { |
1292 | err = dcbnl_build_peer_app(netdev, skb, |
1293 | app_nested_type: DCB_ATTR_IEEE_PEER_APP, |
1294 | app_info_type: DCB_ATTR_IEEE_APP_UNSPEC, |
1295 | app_entry_type: DCB_ATTR_IEEE_APP); |
1296 | if (err) |
1297 | return -EMSGSIZE; |
1298 | } |
1299 | |
1300 | nla_nest_end(skb, start: ieee); |
1301 | if (dcbx >= 0) { |
1302 | err = nla_put_u8(skb, attrtype: DCB_ATTR_DCBX, value: dcbx); |
1303 | if (err) |
1304 | return -EMSGSIZE; |
1305 | } |
1306 | |
1307 | return 0; |
1308 | } |
1309 | |
1310 | static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, |
1311 | int dir) |
1312 | { |
1313 | u8 pgid, up_map, prio, tc_pct; |
1314 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; |
1315 | int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; |
1316 | struct nlattr *pg = nla_nest_start_noflag(skb, attrtype: i); |
1317 | |
1318 | if (!pg) |
1319 | return -EMSGSIZE; |
1320 | |
1321 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
1322 | struct nlattr *tc_nest = nla_nest_start_noflag(skb, attrtype: i); |
1323 | |
1324 | if (!tc_nest) |
1325 | return -EMSGSIZE; |
1326 | |
1327 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
1328 | prio = DCB_ATTR_VALUE_UNDEFINED; |
1329 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
1330 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
1331 | |
1332 | if (!dir) |
1333 | ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, |
1334 | &prio, &pgid, &tc_pct, &up_map); |
1335 | else |
1336 | ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, |
1337 | &prio, &pgid, &tc_pct, &up_map); |
1338 | |
1339 | if (nla_put_u8(skb, attrtype: DCB_TC_ATTR_PARAM_PGID, value: pgid) || |
1340 | nla_put_u8(skb, attrtype: DCB_TC_ATTR_PARAM_UP_MAPPING, value: up_map) || |
1341 | nla_put_u8(skb, attrtype: DCB_TC_ATTR_PARAM_STRICT_PRIO, value: prio) || |
1342 | nla_put_u8(skb, attrtype: DCB_TC_ATTR_PARAM_BW_PCT, value: tc_pct)) |
1343 | return -EMSGSIZE; |
1344 | nla_nest_end(skb, start: tc_nest); |
1345 | } |
1346 | |
1347 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
1348 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
1349 | |
1350 | if (!dir) |
1351 | ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, |
1352 | &tc_pct); |
1353 | else |
1354 | ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, |
1355 | &tc_pct); |
1356 | if (nla_put_u8(skb, attrtype: i, value: tc_pct)) |
1357 | return -EMSGSIZE; |
1358 | } |
1359 | nla_nest_end(skb, start: pg); |
1360 | return 0; |
1361 | } |
1362 | |
1363 | static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) |
1364 | { |
1365 | struct nlattr *cee, *app; |
1366 | struct dcb_app_type *itr; |
1367 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1368 | int dcbx, i, err = -EMSGSIZE; |
1369 | u8 value; |
1370 | |
1371 | if (nla_put_string(skb, attrtype: DCB_ATTR_IFNAME, str: netdev->name)) |
1372 | goto nla_put_failure; |
1373 | cee = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_CEE); |
1374 | if (!cee) |
1375 | goto nla_put_failure; |
1376 | |
1377 | /* local pg */ |
1378 | if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { |
1379 | err = dcbnl_cee_pg_fill(skb, dev: netdev, dir: 1); |
1380 | if (err) |
1381 | goto nla_put_failure; |
1382 | } |
1383 | |
1384 | if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { |
1385 | err = dcbnl_cee_pg_fill(skb, dev: netdev, dir: 0); |
1386 | if (err) |
1387 | goto nla_put_failure; |
1388 | } |
1389 | |
1390 | /* local pfc */ |
1391 | if (ops->getpfccfg) { |
1392 | struct nlattr *pfc_nest = nla_nest_start_noflag(skb, |
1393 | attrtype: DCB_ATTR_CEE_PFC); |
1394 | |
1395 | if (!pfc_nest) |
1396 | goto nla_put_failure; |
1397 | |
1398 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
1399 | ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); |
1400 | if (nla_put_u8(skb, attrtype: i, value)) |
1401 | goto nla_put_failure; |
1402 | } |
1403 | nla_nest_end(skb, start: pfc_nest); |
1404 | } |
1405 | |
1406 | /* local app */ |
1407 | spin_lock_bh(lock: &dcb_lock); |
1408 | app = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_CEE_APP_TABLE); |
1409 | if (!app) |
1410 | goto dcb_unlock; |
1411 | |
1412 | list_for_each_entry(itr, &dcb_app_list, list) { |
1413 | if (itr->ifindex == netdev->ifindex) { |
1414 | struct nlattr *app_nest = nla_nest_start_noflag(skb, |
1415 | attrtype: DCB_ATTR_APP); |
1416 | if (!app_nest) |
1417 | goto dcb_unlock; |
1418 | |
1419 | err = nla_put_u8(skb, attrtype: DCB_APP_ATTR_IDTYPE, |
1420 | value: itr->app.selector); |
1421 | if (err) |
1422 | goto dcb_unlock; |
1423 | |
1424 | err = nla_put_u16(skb, attrtype: DCB_APP_ATTR_ID, |
1425 | value: itr->app.protocol); |
1426 | if (err) |
1427 | goto dcb_unlock; |
1428 | |
1429 | err = nla_put_u8(skb, attrtype: DCB_APP_ATTR_PRIORITY, |
1430 | value: itr->app.priority); |
1431 | if (err) |
1432 | goto dcb_unlock; |
1433 | |
1434 | nla_nest_end(skb, start: app_nest); |
1435 | } |
1436 | } |
1437 | nla_nest_end(skb, start: app); |
1438 | |
1439 | if (netdev->dcbnl_ops->getdcbx) |
1440 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); |
1441 | else |
1442 | dcbx = -EOPNOTSUPP; |
1443 | |
1444 | spin_unlock_bh(lock: &dcb_lock); |
1445 | |
1446 | /* features flags */ |
1447 | if (ops->getfeatcfg) { |
1448 | struct nlattr *feat = nla_nest_start_noflag(skb, |
1449 | attrtype: DCB_ATTR_CEE_FEAT); |
1450 | if (!feat) |
1451 | goto nla_put_failure; |
1452 | |
1453 | for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; |
1454 | i++) |
1455 | if (!ops->getfeatcfg(netdev, i, &value) && |
1456 | nla_put_u8(skb, attrtype: i, value)) |
1457 | goto nla_put_failure; |
1458 | |
1459 | nla_nest_end(skb, start: feat); |
1460 | } |
1461 | |
1462 | /* peer info if available */ |
1463 | if (ops->cee_peer_getpg) { |
1464 | struct cee_pg pg; |
1465 | memset(&pg, 0, sizeof(pg)); |
1466 | err = ops->cee_peer_getpg(netdev, &pg); |
1467 | if (!err && |
1468 | nla_put(skb, attrtype: DCB_ATTR_CEE_PEER_PG, attrlen: sizeof(pg), data: &pg)) |
1469 | goto nla_put_failure; |
1470 | } |
1471 | |
1472 | if (ops->cee_peer_getpfc) { |
1473 | struct cee_pfc pfc; |
1474 | memset(&pfc, 0, sizeof(pfc)); |
1475 | err = ops->cee_peer_getpfc(netdev, &pfc); |
1476 | if (!err && |
1477 | nla_put(skb, attrtype: DCB_ATTR_CEE_PEER_PFC, attrlen: sizeof(pfc), data: &pfc)) |
1478 | goto nla_put_failure; |
1479 | } |
1480 | |
1481 | if (ops->peer_getappinfo && ops->peer_getapptable) { |
1482 | err = dcbnl_build_peer_app(netdev, skb, |
1483 | app_nested_type: DCB_ATTR_CEE_PEER_APP_TABLE, |
1484 | app_info_type: DCB_ATTR_CEE_PEER_APP_INFO, |
1485 | app_entry_type: DCB_ATTR_CEE_PEER_APP); |
1486 | if (err) |
1487 | goto nla_put_failure; |
1488 | } |
1489 | nla_nest_end(skb, start: cee); |
1490 | |
1491 | /* DCBX state */ |
1492 | if (dcbx >= 0) { |
1493 | err = nla_put_u8(skb, attrtype: DCB_ATTR_DCBX, value: dcbx); |
1494 | if (err) |
1495 | goto nla_put_failure; |
1496 | } |
1497 | return 0; |
1498 | |
1499 | dcb_unlock: |
1500 | spin_unlock_bh(lock: &dcb_lock); |
1501 | nla_put_failure: |
1502 | err = -EMSGSIZE; |
1503 | return err; |
1504 | } |
1505 | |
1506 | static int dcbnl_notify(struct net_device *dev, int event, int cmd, |
1507 | u32 seq, u32 portid, int dcbx_ver) |
1508 | { |
1509 | struct net *net = dev_net(dev); |
1510 | struct sk_buff *skb; |
1511 | struct nlmsghdr *nlh; |
1512 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; |
1513 | int err; |
1514 | |
1515 | if (!ops) |
1516 | return -EOPNOTSUPP; |
1517 | |
1518 | skb = dcbnl_newmsg(type: event, cmd, port: portid, seq, flags: 0, nlhp: &nlh); |
1519 | if (!skb) |
1520 | return -ENOMEM; |
1521 | |
1522 | if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) |
1523 | err = dcbnl_ieee_fill(skb, netdev: dev); |
1524 | else |
1525 | err = dcbnl_cee_fill(skb, netdev: dev); |
1526 | |
1527 | if (err < 0) { |
1528 | /* Report error to broadcast listeners */ |
1529 | nlmsg_free(skb); |
1530 | rtnl_set_sk_err(net, RTNLGRP_DCB, error: err); |
1531 | } else { |
1532 | /* End nlmsg and notify broadcast listeners */ |
1533 | nlmsg_end(skb, nlh); |
1534 | rtnl_notify(skb, net, pid: 0, RTNLGRP_DCB, NULL, GFP_KERNEL); |
1535 | } |
1536 | |
1537 | return err; |
1538 | } |
1539 | |
1540 | int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, |
1541 | u32 seq, u32 portid) |
1542 | { |
1543 | return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE); |
1544 | } |
1545 | EXPORT_SYMBOL(dcbnl_ieee_notify); |
1546 | |
1547 | int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, |
1548 | u32 seq, u32 portid) |
1549 | { |
1550 | return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE); |
1551 | } |
1552 | EXPORT_SYMBOL(dcbnl_cee_notify); |
1553 | |
1554 | /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb SET commands. |
1555 | * If any requested operation can not be completed |
1556 | * the entire msg is aborted and error value is returned. |
1557 | * No attempt is made to reconcile the case where only part of the |
1558 | * cmd can be completed. |
1559 | */ |
1560 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh, |
1561 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1562 | { |
1563 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1564 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; |
1565 | int prio; |
1566 | int err; |
1567 | |
1568 | if (!ops) |
1569 | return -EOPNOTSUPP; |
1570 | |
1571 | if (!tb[DCB_ATTR_IEEE]) |
1572 | return -EINVAL; |
1573 | |
1574 | err = nla_parse_nested_deprecated(tb: ieee, DCB_ATTR_IEEE_MAX, |
1575 | nla: tb[DCB_ATTR_IEEE], |
1576 | policy: dcbnl_ieee_policy, NULL); |
1577 | if (err) |
1578 | return err; |
1579 | |
1580 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { |
1581 | struct ieee_ets *ets = nla_data(nla: ieee[DCB_ATTR_IEEE_ETS]); |
1582 | err = ops->ieee_setets(netdev, ets); |
1583 | if (err) |
1584 | goto err; |
1585 | } |
1586 | |
1587 | if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) { |
1588 | struct ieee_maxrate *maxrate = |
1589 | nla_data(nla: ieee[DCB_ATTR_IEEE_MAXRATE]); |
1590 | err = ops->ieee_setmaxrate(netdev, maxrate); |
1591 | if (err) |
1592 | goto err; |
1593 | } |
1594 | |
1595 | if (ieee[DCB_ATTR_IEEE_QCN] && ops->ieee_setqcn) { |
1596 | struct ieee_qcn *qcn = |
1597 | nla_data(nla: ieee[DCB_ATTR_IEEE_QCN]); |
1598 | |
1599 | err = ops->ieee_setqcn(netdev, qcn); |
1600 | if (err) |
1601 | goto err; |
1602 | } |
1603 | |
1604 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
1605 | struct ieee_pfc *pfc = nla_data(nla: ieee[DCB_ATTR_IEEE_PFC]); |
1606 | err = ops->ieee_setpfc(netdev, pfc); |
1607 | if (err) |
1608 | goto err; |
1609 | } |
1610 | |
1611 | if (ieee[DCB_ATTR_DCB_BUFFER] && ops->dcbnl_setbuffer) { |
1612 | struct dcbnl_buffer *buffer = |
1613 | nla_data(nla: ieee[DCB_ATTR_DCB_BUFFER]); |
1614 | |
1615 | for (prio = 0; prio < ARRAY_SIZE(buffer->prio2buffer); prio++) { |
1616 | if (buffer->prio2buffer[prio] >= DCBX_MAX_BUFFERS) { |
1617 | err = -EINVAL; |
1618 | goto err; |
1619 | } |
1620 | } |
1621 | |
1622 | err = ops->dcbnl_setbuffer(netdev, buffer); |
1623 | if (err) |
1624 | goto err; |
1625 | } |
1626 | |
1627 | if (ieee[DCB_ATTR_DCB_REWR_TABLE]) { |
1628 | err = dcbnl_app_table_setdel(attr: ieee[DCB_ATTR_DCB_REWR_TABLE], |
1629 | netdev, |
1630 | setdel: ops->dcbnl_setrewr ?: dcb_setrewr); |
1631 | if (err) |
1632 | goto err; |
1633 | } |
1634 | |
1635 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
1636 | err = dcbnl_app_table_setdel(attr: ieee[DCB_ATTR_IEEE_APP_TABLE], |
1637 | netdev, setdel: ops->ieee_setapp ?: |
1638 | dcb_ieee_setapp); |
1639 | if (err) |
1640 | goto err; |
1641 | } |
1642 | |
1643 | if (ieee[DCB_ATTR_DCB_APP_TRUST_TABLE]) { |
1644 | u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; |
1645 | struct nlattr *attr; |
1646 | int nselectors = 0; |
1647 | int rem; |
1648 | |
1649 | if (!ops->dcbnl_setapptrust) { |
1650 | err = -EOPNOTSUPP; |
1651 | goto err; |
1652 | } |
1653 | |
1654 | nla_for_each_nested(attr, ieee[DCB_ATTR_DCB_APP_TRUST_TABLE], |
1655 | rem) { |
1656 | enum ieee_attrs_app type = nla_type(nla: attr); |
1657 | u8 selector; |
1658 | int i; |
1659 | |
1660 | if (!dcbnl_app_attr_type_validate(type) || |
1661 | nla_len(nla: attr) != 1 || |
1662 | nselectors >= sizeof(selectors)) { |
1663 | err = -EINVAL; |
1664 | goto err; |
1665 | } |
1666 | |
1667 | selector = nla_get_u8(nla: attr); |
1668 | |
1669 | if (!dcbnl_app_selector_validate(type, selector)) { |
1670 | err = -EINVAL; |
1671 | goto err; |
1672 | } |
1673 | |
1674 | /* Duplicate selector ? */ |
1675 | for (i = 0; i < nselectors; i++) { |
1676 | if (selectors[i] == selector) { |
1677 | err = -EINVAL; |
1678 | goto err; |
1679 | } |
1680 | } |
1681 | |
1682 | selectors[nselectors++] = selector; |
1683 | } |
1684 | |
1685 | err = ops->dcbnl_setapptrust(netdev, selectors, nselectors); |
1686 | if (err) |
1687 | goto err; |
1688 | } |
1689 | |
1690 | err: |
1691 | err = nla_put_u8(skb, attrtype: DCB_ATTR_IEEE, value: err); |
1692 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); |
1693 | return err; |
1694 | } |
1695 | |
1696 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh, |
1697 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1698 | { |
1699 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1700 | |
1701 | if (!ops) |
1702 | return -EOPNOTSUPP; |
1703 | |
1704 | return dcbnl_ieee_fill(skb, netdev); |
1705 | } |
1706 | |
1707 | static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh, |
1708 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1709 | { |
1710 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1711 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; |
1712 | int err; |
1713 | |
1714 | if (!ops) |
1715 | return -EOPNOTSUPP; |
1716 | |
1717 | if (!tb[DCB_ATTR_IEEE]) |
1718 | return -EINVAL; |
1719 | |
1720 | err = nla_parse_nested_deprecated(tb: ieee, DCB_ATTR_IEEE_MAX, |
1721 | nla: tb[DCB_ATTR_IEEE], |
1722 | policy: dcbnl_ieee_policy, NULL); |
1723 | if (err) |
1724 | return err; |
1725 | |
1726 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
1727 | err = dcbnl_app_table_setdel(attr: ieee[DCB_ATTR_IEEE_APP_TABLE], |
1728 | netdev, setdel: ops->ieee_delapp ?: |
1729 | dcb_ieee_delapp); |
1730 | if (err) |
1731 | goto err; |
1732 | } |
1733 | |
1734 | if (ieee[DCB_ATTR_DCB_REWR_TABLE]) { |
1735 | err = dcbnl_app_table_setdel(attr: ieee[DCB_ATTR_DCB_REWR_TABLE], |
1736 | netdev, |
1737 | setdel: ops->dcbnl_delrewr ?: dcb_delrewr); |
1738 | if (err) |
1739 | goto err; |
1740 | } |
1741 | |
1742 | err: |
1743 | err = nla_put_u8(skb, attrtype: DCB_ATTR_IEEE, value: err); |
1744 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); |
1745 | return err; |
1746 | } |
1747 | |
1748 | |
1749 | /* DCBX configuration */ |
1750 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh, |
1751 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1752 | { |
1753 | if (!netdev->dcbnl_ops->getdcbx) |
1754 | return -EOPNOTSUPP; |
1755 | |
1756 | return nla_put_u8(skb, attrtype: DCB_ATTR_DCBX, |
1757 | value: netdev->dcbnl_ops->getdcbx(netdev)); |
1758 | } |
1759 | |
1760 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh, |
1761 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1762 | { |
1763 | u8 value; |
1764 | |
1765 | if (!netdev->dcbnl_ops->setdcbx) |
1766 | return -EOPNOTSUPP; |
1767 | |
1768 | if (!tb[DCB_ATTR_DCBX]) |
1769 | return -EINVAL; |
1770 | |
1771 | value = nla_get_u8(nla: tb[DCB_ATTR_DCBX]); |
1772 | |
1773 | return nla_put_u8(skb, attrtype: DCB_ATTR_DCBX, |
1774 | value: netdev->dcbnl_ops->setdcbx(netdev, value)); |
1775 | } |
1776 | |
1777 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
1778 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1779 | { |
1780 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; |
1781 | u8 value; |
1782 | int ret, i; |
1783 | int getall = 0; |
1784 | |
1785 | if (!netdev->dcbnl_ops->getfeatcfg) |
1786 | return -EOPNOTSUPP; |
1787 | |
1788 | if (!tb[DCB_ATTR_FEATCFG]) |
1789 | return -EINVAL; |
1790 | |
1791 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_FEATCFG_ATTR_MAX, |
1792 | nla: tb[DCB_ATTR_FEATCFG], |
1793 | policy: dcbnl_featcfg_nest, NULL); |
1794 | if (ret) |
1795 | return ret; |
1796 | |
1797 | nest = nla_nest_start_noflag(skb, attrtype: DCB_ATTR_FEATCFG); |
1798 | if (!nest) |
1799 | return -EMSGSIZE; |
1800 | |
1801 | if (data[DCB_FEATCFG_ATTR_ALL]) |
1802 | getall = 1; |
1803 | |
1804 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
1805 | if (!getall && !data[i]) |
1806 | continue; |
1807 | |
1808 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); |
1809 | if (!ret) |
1810 | ret = nla_put_u8(skb, attrtype: i, value); |
1811 | |
1812 | if (ret) { |
1813 | nla_nest_cancel(skb, start: nest); |
1814 | goto nla_put_failure; |
1815 | } |
1816 | } |
1817 | nla_nest_end(skb, start: nest); |
1818 | |
1819 | nla_put_failure: |
1820 | return ret; |
1821 | } |
1822 | |
1823 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, |
1824 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1825 | { |
1826 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; |
1827 | int ret, i; |
1828 | u8 value; |
1829 | |
1830 | if (!netdev->dcbnl_ops->setfeatcfg) |
1831 | return -ENOTSUPP; |
1832 | |
1833 | if (!tb[DCB_ATTR_FEATCFG]) |
1834 | return -EINVAL; |
1835 | |
1836 | ret = nla_parse_nested_deprecated(tb: data, maxtype: DCB_FEATCFG_ATTR_MAX, |
1837 | nla: tb[DCB_ATTR_FEATCFG], |
1838 | policy: dcbnl_featcfg_nest, NULL); |
1839 | |
1840 | if (ret) |
1841 | goto err; |
1842 | |
1843 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
1844 | if (data[i] == NULL) |
1845 | continue; |
1846 | |
1847 | value = nla_get_u8(nla: data[i]); |
1848 | |
1849 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); |
1850 | |
1851 | if (ret) |
1852 | goto err; |
1853 | } |
1854 | err: |
1855 | ret = nla_put_u8(skb, attrtype: DCB_ATTR_FEATCFG, value: ret); |
1856 | |
1857 | return ret; |
1858 | } |
1859 | |
1860 | /* Handle CEE DCBX GET commands. */ |
1861 | static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh, |
1862 | u32 seq, struct nlattr **tb, struct sk_buff *skb) |
1863 | { |
1864 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
1865 | |
1866 | if (!ops) |
1867 | return -EOPNOTSUPP; |
1868 | |
1869 | return dcbnl_cee_fill(skb, netdev); |
1870 | } |
1871 | |
1872 | struct reply_func { |
1873 | /* reply netlink message type */ |
1874 | int type; |
1875 | |
1876 | /* function to fill message contents */ |
1877 | int (*cb)(struct net_device *, struct nlmsghdr *, u32, |
1878 | struct nlattr **, struct sk_buff *); |
1879 | }; |
1880 | |
1881 | static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = { |
1882 | [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate }, |
1883 | [DCB_CMD_SSTATE] = { RTM_SETDCB, .cb: dcbnl_setstate }, |
1884 | [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, .cb: dcbnl_getpfccfg }, |
1885 | [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, .cb: dcbnl_setpfccfg }, |
1886 | [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, .cb: dcbnl_getperm_hwaddr }, |
1887 | [DCB_CMD_GCAP] = { RTM_GETDCB, .cb: dcbnl_getcap }, |
1888 | [DCB_CMD_GNUMTCS] = { RTM_GETDCB, .cb: dcbnl_getnumtcs }, |
1889 | [DCB_CMD_SNUMTCS] = { RTM_SETDCB, .cb: dcbnl_setnumtcs }, |
1890 | [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, .cb: dcbnl_getpfcstate }, |
1891 | [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, .cb: dcbnl_setpfcstate }, |
1892 | [DCB_CMD_GAPP] = { RTM_GETDCB, .cb: dcbnl_getapp }, |
1893 | [DCB_CMD_SAPP] = { RTM_SETDCB, .cb: dcbnl_setapp }, |
1894 | [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, .cb: dcbnl_pgtx_getcfg }, |
1895 | [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, .cb: dcbnl_pgtx_setcfg }, |
1896 | [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, .cb: dcbnl_pgrx_getcfg }, |
1897 | [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, .cb: dcbnl_pgrx_setcfg }, |
1898 | [DCB_CMD_SET_ALL] = { RTM_SETDCB, .cb: dcbnl_setall }, |
1899 | [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, .cb: dcbnl_bcn_getcfg }, |
1900 | [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, .cb: dcbnl_bcn_setcfg }, |
1901 | [DCB_CMD_IEEE_GET] = { RTM_GETDCB, .cb: dcbnl_ieee_get }, |
1902 | [DCB_CMD_IEEE_SET] = { RTM_SETDCB, .cb: dcbnl_ieee_set }, |
1903 | [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, .cb: dcbnl_ieee_del }, |
1904 | [DCB_CMD_GDCBX] = { RTM_GETDCB, .cb: dcbnl_getdcbx }, |
1905 | [DCB_CMD_SDCBX] = { RTM_SETDCB, .cb: dcbnl_setdcbx }, |
1906 | [DCB_CMD_GFEATCFG] = { RTM_GETDCB, .cb: dcbnl_getfeatcfg }, |
1907 | [DCB_CMD_SFEATCFG] = { RTM_SETDCB, .cb: dcbnl_setfeatcfg }, |
1908 | [DCB_CMD_CEE_GET] = { RTM_GETDCB, .cb: dcbnl_cee_get }, |
1909 | }; |
1910 | |
1911 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, |
1912 | struct netlink_ext_ack *extack) |
1913 | { |
1914 | struct net *net = sock_net(sk: skb->sk); |
1915 | struct net_device *netdev; |
1916 | struct dcbmsg *dcb = nlmsg_data(nlh); |
1917 | struct nlattr *tb[DCB_ATTR_MAX + 1]; |
1918 | u32 portid = NETLINK_CB(skb).portid; |
1919 | int ret = -EINVAL; |
1920 | struct sk_buff *reply_skb; |
1921 | struct nlmsghdr *reply_nlh = NULL; |
1922 | const struct reply_func *fn; |
1923 | |
1924 | if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN)) |
1925 | return -EPERM; |
1926 | |
1927 | ret = nlmsg_parse_deprecated(nlh, hdrlen: sizeof(*dcb), tb, maxtype: DCB_ATTR_MAX, |
1928 | policy: dcbnl_rtnl_policy, extack); |
1929 | if (ret < 0) |
1930 | return ret; |
1931 | |
1932 | if (dcb->cmd > DCB_CMD_MAX) |
1933 | return -EINVAL; |
1934 | |
1935 | /* check if a reply function has been defined for the command */ |
1936 | fn = &reply_funcs[dcb->cmd]; |
1937 | if (!fn->cb) |
1938 | return -EOPNOTSUPP; |
1939 | if (fn->type == RTM_SETDCB && !netlink_capable(skb, CAP_NET_ADMIN)) |
1940 | return -EPERM; |
1941 | |
1942 | if (!tb[DCB_ATTR_IFNAME]) |
1943 | return -EINVAL; |
1944 | |
1945 | netdev = __dev_get_by_name(net, name: nla_data(nla: tb[DCB_ATTR_IFNAME])); |
1946 | if (!netdev) |
1947 | return -ENODEV; |
1948 | |
1949 | if (!netdev->dcbnl_ops) |
1950 | return -EOPNOTSUPP; |
1951 | |
1952 | reply_skb = dcbnl_newmsg(type: fn->type, cmd: dcb->cmd, port: portid, seq: nlh->nlmsg_seq, |
1953 | flags: nlh->nlmsg_flags, nlhp: &reply_nlh); |
1954 | if (!reply_skb) |
1955 | return -ENOMEM; |
1956 | |
1957 | ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb); |
1958 | if (ret < 0) { |
1959 | nlmsg_free(skb: reply_skb); |
1960 | goto out; |
1961 | } |
1962 | |
1963 | nlmsg_end(skb: reply_skb, nlh: reply_nlh); |
1964 | |
1965 | ret = rtnl_unicast(skb: reply_skb, net, pid: portid); |
1966 | out: |
1967 | return ret; |
1968 | } |
1969 | |
1970 | static struct dcb_app_type *dcb_rewr_lookup(const struct dcb_app *app, |
1971 | int ifindex, int proto) |
1972 | { |
1973 | struct dcb_app_type *itr; |
1974 | |
1975 | list_for_each_entry(itr, &dcb_rewr_list, list) { |
1976 | if (itr->app.selector == app->selector && |
1977 | itr->app.priority == app->priority && |
1978 | itr->ifindex == ifindex && |
1979 | ((proto == -1) || itr->app.protocol == proto)) |
1980 | return itr; |
1981 | } |
1982 | |
1983 | return NULL; |
1984 | } |
1985 | |
1986 | static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app, |
1987 | int ifindex, int prio) |
1988 | { |
1989 | struct dcb_app_type *itr; |
1990 | |
1991 | list_for_each_entry(itr, &dcb_app_list, list) { |
1992 | if (itr->app.selector == app->selector && |
1993 | itr->app.protocol == app->protocol && |
1994 | itr->ifindex == ifindex && |
1995 | ((prio == -1) || itr->app.priority == prio)) |
1996 | return itr; |
1997 | } |
1998 | |
1999 | return NULL; |
2000 | } |
2001 | |
2002 | static int dcb_app_add(struct list_head *list, const struct dcb_app *app, |
2003 | int ifindex) |
2004 | { |
2005 | struct dcb_app_type *entry; |
2006 | |
2007 | entry = kmalloc(size: sizeof(*entry), GFP_ATOMIC); |
2008 | if (!entry) |
2009 | return -ENOMEM; |
2010 | |
2011 | memcpy(&entry->app, app, sizeof(*app)); |
2012 | entry->ifindex = ifindex; |
2013 | list_add(new: &entry->list, head: list); |
2014 | |
2015 | return 0; |
2016 | } |
2017 | |
2018 | /** |
2019 | * dcb_getapp - retrieve the DCBX application user priority |
2020 | * @dev: network interface |
2021 | * @app: application to get user priority of |
2022 | * |
2023 | * On success returns a non-zero 802.1p user priority bitmap |
2024 | * otherwise returns 0 as the invalid user priority bitmap to |
2025 | * indicate an error. |
2026 | */ |
2027 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) |
2028 | { |
2029 | struct dcb_app_type *itr; |
2030 | u8 prio = 0; |
2031 | |
2032 | spin_lock_bh(lock: &dcb_lock); |
2033 | itr = dcb_app_lookup(app, ifindex: dev->ifindex, prio: -1); |
2034 | if (itr) |
2035 | prio = itr->app.priority; |
2036 | spin_unlock_bh(lock: &dcb_lock); |
2037 | |
2038 | return prio; |
2039 | } |
2040 | EXPORT_SYMBOL(dcb_getapp); |
2041 | |
2042 | /** |
2043 | * dcb_setapp - add CEE dcb application data to app list |
2044 | * @dev: network interface |
2045 | * @new: application data to add |
2046 | * |
2047 | * Priority 0 is an invalid priority in CEE spec. This routine |
2048 | * removes applications from the app list if the priority is |
2049 | * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap |
2050 | */ |
2051 | int dcb_setapp(struct net_device *dev, struct dcb_app *new) |
2052 | { |
2053 | struct dcb_app_type *itr; |
2054 | struct dcb_app_type event; |
2055 | int err = 0; |
2056 | |
2057 | event.ifindex = dev->ifindex; |
2058 | memcpy(&event.app, new, sizeof(event.app)); |
2059 | if (dev->dcbnl_ops->getdcbx) |
2060 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
2061 | |
2062 | spin_lock_bh(lock: &dcb_lock); |
2063 | /* Search for existing match and replace */ |
2064 | itr = dcb_app_lookup(app: new, ifindex: dev->ifindex, prio: -1); |
2065 | if (itr) { |
2066 | if (new->priority) |
2067 | itr->app.priority = new->priority; |
2068 | else { |
2069 | list_del(entry: &itr->list); |
2070 | kfree(objp: itr); |
2071 | } |
2072 | goto out; |
2073 | } |
2074 | /* App type does not exist add new application type */ |
2075 | if (new->priority) |
2076 | err = dcb_app_add(list: &dcb_app_list, app: new, ifindex: dev->ifindex); |
2077 | out: |
2078 | spin_unlock_bh(lock: &dcb_lock); |
2079 | if (!err) |
2080 | call_dcbevent_notifiers(val: DCB_APP_EVENT, v: &event); |
2081 | return err; |
2082 | } |
2083 | EXPORT_SYMBOL(dcb_setapp); |
2084 | |
2085 | /** |
2086 | * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority |
2087 | * @dev: network interface |
2088 | * @app: where to store the retrieve application data |
2089 | * |
2090 | * Helper routine which on success returns a non-zero 802.1Qaz user |
2091 | * priority bitmap otherwise returns 0 to indicate the dcb_app was |
2092 | * not found in APP list. |
2093 | */ |
2094 | u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app) |
2095 | { |
2096 | struct dcb_app_type *itr; |
2097 | u8 prio = 0; |
2098 | |
2099 | spin_lock_bh(lock: &dcb_lock); |
2100 | itr = dcb_app_lookup(app, ifindex: dev->ifindex, prio: -1); |
2101 | if (itr) |
2102 | prio |= 1 << itr->app.priority; |
2103 | spin_unlock_bh(lock: &dcb_lock); |
2104 | |
2105 | return prio; |
2106 | } |
2107 | EXPORT_SYMBOL(dcb_ieee_getapp_mask); |
2108 | |
2109 | /* Get protocol value from rewrite entry. */ |
2110 | u16 dcb_getrewr(struct net_device *dev, struct dcb_app *app) |
2111 | { |
2112 | struct dcb_app_type *itr; |
2113 | u16 proto = 0; |
2114 | |
2115 | spin_lock_bh(lock: &dcb_lock); |
2116 | itr = dcb_rewr_lookup(app, ifindex: dev->ifindex, proto: -1); |
2117 | if (itr) |
2118 | proto = itr->app.protocol; |
2119 | spin_unlock_bh(lock: &dcb_lock); |
2120 | |
2121 | return proto; |
2122 | } |
2123 | EXPORT_SYMBOL(dcb_getrewr); |
2124 | |
2125 | /* Add rewrite entry to the rewrite list. */ |
2126 | int dcb_setrewr(struct net_device *dev, struct dcb_app *new) |
2127 | { |
2128 | int err; |
2129 | |
2130 | spin_lock_bh(lock: &dcb_lock); |
2131 | /* Search for existing match and abort if found. */ |
2132 | if (dcb_rewr_lookup(app: new, ifindex: dev->ifindex, proto: new->protocol)) { |
2133 | err = -EEXIST; |
2134 | goto out; |
2135 | } |
2136 | |
2137 | err = dcb_app_add(list: &dcb_rewr_list, app: new, ifindex: dev->ifindex); |
2138 | out: |
2139 | spin_unlock_bh(lock: &dcb_lock); |
2140 | |
2141 | return err; |
2142 | } |
2143 | EXPORT_SYMBOL(dcb_setrewr); |
2144 | |
2145 | /* Delete rewrite entry from the rewrite list. */ |
2146 | int dcb_delrewr(struct net_device *dev, struct dcb_app *del) |
2147 | { |
2148 | struct dcb_app_type *itr; |
2149 | int err = -ENOENT; |
2150 | |
2151 | spin_lock_bh(lock: &dcb_lock); |
2152 | /* Search for existing match and remove it. */ |
2153 | itr = dcb_rewr_lookup(app: del, ifindex: dev->ifindex, proto: del->protocol); |
2154 | if (itr) { |
2155 | list_del(entry: &itr->list); |
2156 | kfree(objp: itr); |
2157 | err = 0; |
2158 | } |
2159 | |
2160 | spin_unlock_bh(lock: &dcb_lock); |
2161 | |
2162 | return err; |
2163 | } |
2164 | EXPORT_SYMBOL(dcb_delrewr); |
2165 | |
2166 | /** |
2167 | * dcb_ieee_setapp - add IEEE dcb application data to app list |
2168 | * @dev: network interface |
2169 | * @new: application data to add |
2170 | * |
2171 | * This adds Application data to the list. Multiple application |
2172 | * entries may exists for the same selector and protocol as long |
2173 | * as the priorities are different. Priority is expected to be a |
2174 | * 3-bit unsigned integer |
2175 | */ |
2176 | int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new) |
2177 | { |
2178 | struct dcb_app_type event; |
2179 | int err = 0; |
2180 | |
2181 | event.ifindex = dev->ifindex; |
2182 | memcpy(&event.app, new, sizeof(event.app)); |
2183 | if (dev->dcbnl_ops->getdcbx) |
2184 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
2185 | |
2186 | spin_lock_bh(lock: &dcb_lock); |
2187 | /* Search for existing match and abort if found */ |
2188 | if (dcb_app_lookup(app: new, ifindex: dev->ifindex, prio: new->priority)) { |
2189 | err = -EEXIST; |
2190 | goto out; |
2191 | } |
2192 | |
2193 | err = dcb_app_add(list: &dcb_app_list, app: new, ifindex: dev->ifindex); |
2194 | out: |
2195 | spin_unlock_bh(lock: &dcb_lock); |
2196 | if (!err) |
2197 | call_dcbevent_notifiers(val: DCB_APP_EVENT, v: &event); |
2198 | return err; |
2199 | } |
2200 | EXPORT_SYMBOL(dcb_ieee_setapp); |
2201 | |
2202 | /** |
2203 | * dcb_ieee_delapp - delete IEEE dcb application data from list |
2204 | * @dev: network interface |
2205 | * @del: application data to delete |
2206 | * |
2207 | * This removes a matching APP data from the APP list |
2208 | */ |
2209 | int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) |
2210 | { |
2211 | struct dcb_app_type *itr; |
2212 | struct dcb_app_type event; |
2213 | int err = -ENOENT; |
2214 | |
2215 | event.ifindex = dev->ifindex; |
2216 | memcpy(&event.app, del, sizeof(event.app)); |
2217 | if (dev->dcbnl_ops->getdcbx) |
2218 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
2219 | |
2220 | spin_lock_bh(lock: &dcb_lock); |
2221 | /* Search for existing match and remove it. */ |
2222 | if ((itr = dcb_app_lookup(app: del, ifindex: dev->ifindex, prio: del->priority))) { |
2223 | list_del(entry: &itr->list); |
2224 | kfree(objp: itr); |
2225 | err = 0; |
2226 | } |
2227 | |
2228 | spin_unlock_bh(lock: &dcb_lock); |
2229 | if (!err) |
2230 | call_dcbevent_notifiers(val: DCB_APP_EVENT, v: &event); |
2231 | return err; |
2232 | } |
2233 | EXPORT_SYMBOL(dcb_ieee_delapp); |
2234 | |
2235 | /* dcb_getrewr_prio_pcp_mask_map - For a given device, find mapping from |
2236 | * priorities to the PCP and DEI values assigned to that priority. |
2237 | */ |
2238 | void dcb_getrewr_prio_pcp_mask_map(const struct net_device *dev, |
2239 | struct dcb_rewr_prio_pcp_map *p_map) |
2240 | { |
2241 | int ifindex = dev->ifindex; |
2242 | struct dcb_app_type *itr; |
2243 | u8 prio; |
2244 | |
2245 | memset(p_map->map, 0, sizeof(p_map->map)); |
2246 | |
2247 | spin_lock_bh(lock: &dcb_lock); |
2248 | list_for_each_entry(itr, &dcb_rewr_list, list) { |
2249 | if (itr->ifindex == ifindex && |
2250 | itr->app.selector == DCB_APP_SEL_PCP && |
2251 | itr->app.protocol < 16 && |
2252 | itr->app.priority < IEEE_8021QAZ_MAX_TCS) { |
2253 | prio = itr->app.priority; |
2254 | p_map->map[prio] |= 1 << itr->app.protocol; |
2255 | } |
2256 | } |
2257 | spin_unlock_bh(lock: &dcb_lock); |
2258 | } |
2259 | EXPORT_SYMBOL(dcb_getrewr_prio_pcp_mask_map); |
2260 | |
2261 | /* dcb_getrewr_prio_dscp_mask_map - For a given device, find mapping from |
2262 | * priorities to the DSCP values assigned to that priority. |
2263 | */ |
2264 | void dcb_getrewr_prio_dscp_mask_map(const struct net_device *dev, |
2265 | struct dcb_ieee_app_prio_map *p_map) |
2266 | { |
2267 | int ifindex = dev->ifindex; |
2268 | struct dcb_app_type *itr; |
2269 | u8 prio; |
2270 | |
2271 | memset(p_map->map, 0, sizeof(p_map->map)); |
2272 | |
2273 | spin_lock_bh(lock: &dcb_lock); |
2274 | list_for_each_entry(itr, &dcb_rewr_list, list) { |
2275 | if (itr->ifindex == ifindex && |
2276 | itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && |
2277 | itr->app.protocol < 64 && |
2278 | itr->app.priority < IEEE_8021QAZ_MAX_TCS) { |
2279 | prio = itr->app.priority; |
2280 | p_map->map[prio] |= 1ULL << itr->app.protocol; |
2281 | } |
2282 | } |
2283 | spin_unlock_bh(lock: &dcb_lock); |
2284 | } |
2285 | EXPORT_SYMBOL(dcb_getrewr_prio_dscp_mask_map); |
2286 | |
2287 | /* |
2288 | * dcb_ieee_getapp_prio_dscp_mask_map - For a given device, find mapping from |
2289 | * priorities to the DSCP values assigned to that priority. Initialize p_map |
2290 | * such that each map element holds a bit mask of DSCP values configured for |
2291 | * that priority by APP entries. |
2292 | */ |
2293 | void dcb_ieee_getapp_prio_dscp_mask_map(const struct net_device *dev, |
2294 | struct dcb_ieee_app_prio_map *p_map) |
2295 | { |
2296 | int ifindex = dev->ifindex; |
2297 | struct dcb_app_type *itr; |
2298 | u8 prio; |
2299 | |
2300 | memset(p_map->map, 0, sizeof(p_map->map)); |
2301 | |
2302 | spin_lock_bh(lock: &dcb_lock); |
2303 | list_for_each_entry(itr, &dcb_app_list, list) { |
2304 | if (itr->ifindex == ifindex && |
2305 | itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && |
2306 | itr->app.protocol < 64 && |
2307 | itr->app.priority < IEEE_8021QAZ_MAX_TCS) { |
2308 | prio = itr->app.priority; |
2309 | p_map->map[prio] |= 1ULL << itr->app.protocol; |
2310 | } |
2311 | } |
2312 | spin_unlock_bh(lock: &dcb_lock); |
2313 | } |
2314 | EXPORT_SYMBOL(dcb_ieee_getapp_prio_dscp_mask_map); |
2315 | |
2316 | /* |
2317 | * dcb_ieee_getapp_dscp_prio_mask_map - For a given device, find mapping from |
2318 | * DSCP values to the priorities assigned to that DSCP value. Initialize p_map |
2319 | * such that each map element holds a bit mask of priorities configured for a |
2320 | * given DSCP value by APP entries. |
2321 | */ |
2322 | void |
2323 | dcb_ieee_getapp_dscp_prio_mask_map(const struct net_device *dev, |
2324 | struct dcb_ieee_app_dscp_map *p_map) |
2325 | { |
2326 | int ifindex = dev->ifindex; |
2327 | struct dcb_app_type *itr; |
2328 | |
2329 | memset(p_map->map, 0, sizeof(p_map->map)); |
2330 | |
2331 | spin_lock_bh(lock: &dcb_lock); |
2332 | list_for_each_entry(itr, &dcb_app_list, list) { |
2333 | if (itr->ifindex == ifindex && |
2334 | itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && |
2335 | itr->app.protocol < 64 && |
2336 | itr->app.priority < IEEE_8021QAZ_MAX_TCS) |
2337 | p_map->map[itr->app.protocol] |= 1 << itr->app.priority; |
2338 | } |
2339 | spin_unlock_bh(lock: &dcb_lock); |
2340 | } |
2341 | EXPORT_SYMBOL(dcb_ieee_getapp_dscp_prio_mask_map); |
2342 | |
2343 | /* |
2344 | * Per 802.1Q-2014, the selector value of 1 is used for matching on Ethernet |
2345 | * type, with valid PID values >= 1536. A special meaning is then assigned to |
2346 | * protocol value of 0: "default priority. For use when priority is not |
2347 | * otherwise specified". |
2348 | * |
2349 | * dcb_ieee_getapp_default_prio_mask - For a given device, find all APP entries |
2350 | * of the form {$PRIO, ETHERTYPE, 0} and construct a bit mask of all default |
2351 | * priorities set by these entries. |
2352 | */ |
2353 | u8 dcb_ieee_getapp_default_prio_mask(const struct net_device *dev) |
2354 | { |
2355 | int ifindex = dev->ifindex; |
2356 | struct dcb_app_type *itr; |
2357 | u8 mask = 0; |
2358 | |
2359 | spin_lock_bh(lock: &dcb_lock); |
2360 | list_for_each_entry(itr, &dcb_app_list, list) { |
2361 | if (itr->ifindex == ifindex && |
2362 | itr->app.selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && |
2363 | itr->app.protocol == 0 && |
2364 | itr->app.priority < IEEE_8021QAZ_MAX_TCS) |
2365 | mask |= 1 << itr->app.priority; |
2366 | } |
2367 | spin_unlock_bh(lock: &dcb_lock); |
2368 | |
2369 | return mask; |
2370 | } |
2371 | EXPORT_SYMBOL(dcb_ieee_getapp_default_prio_mask); |
2372 | |
2373 | static void dcbnl_flush_dev(struct net_device *dev) |
2374 | { |
2375 | struct dcb_app_type *itr, *tmp; |
2376 | |
2377 | spin_lock_bh(lock: &dcb_lock); |
2378 | |
2379 | list_for_each_entry_safe(itr, tmp, &dcb_app_list, list) { |
2380 | if (itr->ifindex == dev->ifindex) { |
2381 | list_del(entry: &itr->list); |
2382 | kfree(objp: itr); |
2383 | } |
2384 | } |
2385 | |
2386 | spin_unlock_bh(lock: &dcb_lock); |
2387 | } |
2388 | |
2389 | static int dcbnl_netdevice_event(struct notifier_block *nb, |
2390 | unsigned long event, void *ptr) |
2391 | { |
2392 | struct net_device *dev = netdev_notifier_info_to_dev(info: ptr); |
2393 | |
2394 | switch (event) { |
2395 | case NETDEV_UNREGISTER: |
2396 | if (!dev->dcbnl_ops) |
2397 | return NOTIFY_DONE; |
2398 | |
2399 | dcbnl_flush_dev(dev); |
2400 | |
2401 | return NOTIFY_OK; |
2402 | default: |
2403 | return NOTIFY_DONE; |
2404 | } |
2405 | } |
2406 | |
2407 | static struct notifier_block dcbnl_nb __read_mostly = { |
2408 | .notifier_call = dcbnl_netdevice_event, |
2409 | }; |
2410 | |
2411 | static int __init dcbnl_init(void) |
2412 | { |
2413 | int err; |
2414 | |
2415 | err = register_netdevice_notifier(nb: &dcbnl_nb); |
2416 | if (err) |
2417 | return err; |
2418 | |
2419 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, flags: 0); |
2420 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, flags: 0); |
2421 | |
2422 | return 0; |
2423 | } |
2424 | device_initcall(dcbnl_init); |
2425 | |