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2b4a8990 MK |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | ||
041b1c5d | 3 | #include <net/sock.h> |
2b4a8990 MK |
4 | #include <linux/ethtool_netlink.h> |
5 | #include "netlink.h" | |
6 | ||
041b1c5d MK |
7 | static struct genl_family ethtool_genl_family; |
8 | ||
6b08d6c1 | 9 | static bool ethnl_ok __read_mostly; |
5cf2a548 | 10 | static u32 ethnl_bcast_seq; |
6b08d6c1 | 11 | |
a0de1cd3 JK |
12 | #define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ |
13 | ETHTOOL_FLAG_OMIT_REPLY) | |
14 | #define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS) | |
15 | ||
329d9c33 | 16 | const struct nla_policy ethnl_header_policy[] = { |
041b1c5d MK |
17 | [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, |
18 | [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, | |
19 | .len = ALTIFNAMSIZ - 1 }, | |
a0de1cd3 JK |
20 | [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, |
21 | ETHTOOL_FLAGS_BASIC), | |
22 | }; | |
23 | ||
24 | const struct nla_policy ethnl_header_policy_stats[] = { | |
25 | [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, | |
26 | [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, | |
27 | .len = ALTIFNAMSIZ - 1 }, | |
28 | [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, | |
29 | ETHTOOL_FLAGS_STATS), | |
041b1c5d MK |
30 | }; |
31 | ||
32 | /** | |
98130546 | 33 | * ethnl_parse_header_dev_get() - parse request header |
041b1c5d MK |
34 | * @req_info: structure to put results into |
35 | * @header: nest attribute with request header | |
36 | * @net: request netns | |
37 | * @extack: netlink extack for error reporting | |
38 | * @require_dev: fail if no device identified in header | |
39 | * | |
40 | * Parse request header in nested attribute @nest and puts results into | |
41 | * the structure pointed to by @req_info. Extack from @info is used for error | |
42 | * reporting. If req_info->dev is not null on return, reference to it has | |
43 | * been taken. If error is returned, *req_info is null initialized and no | |
44 | * reference is held. | |
45 | * | |
46 | * Return: 0 on success or negative error code | |
47 | */ | |
98130546 MK |
48 | int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, |
49 | const struct nlattr *header, struct net *net, | |
50 | struct netlink_ext_ack *extack, bool require_dev) | |
041b1c5d | 51 | { |
ff419afa | 52 | struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)]; |
041b1c5d MK |
53 | const struct nlattr *devname_attr; |
54 | struct net_device *dev = NULL; | |
2363d73a | 55 | u32 flags = 0; |
041b1c5d MK |
56 | int ret; |
57 | ||
58 | if (!header) { | |
59 | NL_SET_ERR_MSG(extack, "request header missing"); | |
60 | return -EINVAL; | |
61 | } | |
a0de1cd3 JK |
62 | /* No validation here, command policy should have a nested policy set |
63 | * for the header, therefore validation should have already been done. | |
64 | */ | |
ff419afa | 65 | ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header, |
a0de1cd3 | 66 | NULL, extack); |
041b1c5d MK |
67 | if (ret < 0) |
68 | return ret; | |
a0de1cd3 | 69 | if (tb[ETHTOOL_A_HEADER_FLAGS]) |
2363d73a | 70 | flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); |
041b1c5d | 71 | |
2363d73a | 72 | devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; |
041b1c5d MK |
73 | if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { |
74 | u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); | |
75 | ||
76 | dev = dev_get_by_index(net, ifindex); | |
77 | if (!dev) { | |
78 | NL_SET_ERR_MSG_ATTR(extack, | |
79 | tb[ETHTOOL_A_HEADER_DEV_INDEX], | |
80 | "no device matches ifindex"); | |
81 | return -ENODEV; | |
82 | } | |
83 | /* if both ifindex and ifname are passed, they must match */ | |
84 | if (devname_attr && | |
85 | strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { | |
86 | dev_put(dev); | |
87 | NL_SET_ERR_MSG_ATTR(extack, header, | |
88 | "ifindex and name do not match"); | |
89 | return -ENODEV; | |
90 | } | |
91 | } else if (devname_attr) { | |
92 | dev = dev_get_by_name(net, nla_data(devname_attr)); | |
93 | if (!dev) { | |
94 | NL_SET_ERR_MSG_ATTR(extack, devname_attr, | |
95 | "no device matches name"); | |
96 | return -ENODEV; | |
97 | } | |
98 | } else if (require_dev) { | |
99 | NL_SET_ERR_MSG_ATTR(extack, header, | |
100 | "neither ifindex nor name specified"); | |
101 | return -EINVAL; | |
102 | } | |
103 | ||
104 | if (dev && !netif_device_present(dev)) { | |
105 | dev_put(dev); | |
106 | NL_SET_ERR_MSG(extack, "device not present"); | |
107 | return -ENODEV; | |
108 | } | |
109 | ||
110 | req_info->dev = dev; | |
2363d73a | 111 | req_info->flags = flags; |
041b1c5d MK |
112 | return 0; |
113 | } | |
114 | ||
115 | /** | |
116 | * ethnl_fill_reply_header() - Put common header into a reply message | |
117 | * @skb: skb with the message | |
118 | * @dev: network device to describe in header | |
119 | * @attrtype: attribute type to use for the nest | |
120 | * | |
121 | * Create a nested attribute with attributes describing given network device. | |
122 | * | |
123 | * Return: 0 on success, error value (-EMSGSIZE only) on error | |
124 | */ | |
125 | int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, | |
126 | u16 attrtype) | |
127 | { | |
128 | struct nlattr *nest; | |
129 | ||
130 | if (!dev) | |
131 | return 0; | |
132 | nest = nla_nest_start(skb, attrtype); | |
133 | if (!nest) | |
134 | return -EMSGSIZE; | |
135 | ||
136 | if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || | |
137 | nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) | |
138 | goto nla_put_failure; | |
139 | /* If more attributes are put into reply header, ethnl_header_size() | |
140 | * must be updated to account for them. | |
141 | */ | |
142 | ||
143 | nla_nest_end(skb, nest); | |
144 | return 0; | |
145 | ||
146 | nla_put_failure: | |
147 | nla_nest_cancel(skb, nest); | |
148 | return -EMSGSIZE; | |
149 | } | |
150 | ||
151 | /** | |
152 | * ethnl_reply_init() - Create skb for a reply and fill device identification | |
d2c4b444 MK |
153 | * @payload: payload length (without netlink and genetlink header) |
154 | * @dev: device the reply is about (may be null) | |
155 | * @cmd: ETHTOOL_MSG_* message type for reply | |
156 | * @hdr_attrtype: attribute type for common header | |
157 | * @info: genetlink info of the received packet we respond to | |
158 | * @ehdrp: place to store payload pointer returned by genlmsg_new() | |
041b1c5d MK |
159 | * |
160 | * Return: pointer to allocated skb on success, NULL on error | |
161 | */ | |
162 | struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, | |
163 | u16 hdr_attrtype, struct genl_info *info, | |
164 | void **ehdrp) | |
165 | { | |
166 | struct sk_buff *skb; | |
167 | ||
168 | skb = genlmsg_new(payload, GFP_KERNEL); | |
169 | if (!skb) | |
170 | goto err; | |
171 | *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); | |
172 | if (!*ehdrp) | |
173 | goto err_free; | |
174 | ||
175 | if (dev) { | |
176 | int ret; | |
177 | ||
178 | ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); | |
179 | if (ret < 0) | |
180 | goto err_free; | |
181 | } | |
182 | return skb; | |
183 | ||
184 | err_free: | |
185 | nlmsg_free(skb); | |
186 | err: | |
187 | if (info) | |
188 | GENL_SET_ERR_MSG(info, "failed to setup reply message"); | |
189 | return NULL; | |
190 | } | |
191 | ||
c7d759eb JK |
192 | void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) |
193 | { | |
194 | return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, | |
195 | ðtool_genl_family, 0, cmd); | |
196 | } | |
197 | ||
0df960f1 | 198 | void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) |
5cf2a548 MK |
199 | { |
200 | return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, | |
201 | cmd); | |
202 | } | |
203 | ||
0df960f1 | 204 | int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) |
5cf2a548 MK |
205 | { |
206 | return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, | |
207 | 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); | |
208 | } | |
209 | ||
728480f1 MK |
210 | /* GET request helpers */ |
211 | ||
212 | /** | |
213 | * struct ethnl_dump_ctx - context structure for generic dumpit() callback | |
d2c4b444 MK |
214 | * @ops: request ops of currently processed message type |
215 | * @req_info: parsed request header of processed request | |
216 | * @reply_data: data needed to compose the reply | |
217 | * @pos_hash: saved iteration position - hashbucket | |
218 | * @pos_idx: saved iteration position - index | |
728480f1 MK |
219 | * |
220 | * These parameters are kept in struct netlink_callback as context preserved | |
221 | * between iterations. They are initialized by ethnl_default_start() and used | |
222 | * in ethnl_default_dumpit() and ethnl_default_done(). | |
223 | */ | |
224 | struct ethnl_dump_ctx { | |
225 | const struct ethnl_request_ops *ops; | |
226 | struct ethnl_req_info *req_info; | |
227 | struct ethnl_reply_data *reply_data; | |
228 | int pos_hash; | |
229 | int pos_idx; | |
230 | }; | |
231 | ||
232 | static const struct ethnl_request_ops * | |
233 | ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { | |
71921690 | 234 | [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, |
459e0b81 | 235 | [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, |
f625aa9b | 236 | [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, |
3d2b847f | 237 | [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, |
6a94b8cc | 238 | [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, |
51ea22b0 | 239 | [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, |
0524399d | 240 | [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, |
e16c3386 | 241 | [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, |
e4a1717b | 242 | [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, |
0c84979c | 243 | [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, |
21727545 | 244 | [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, |
7f59fb32 | 245 | [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, |
b7eeefe7 | 246 | [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, |
5b071c59 | 247 | [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, |
728480f1 MK |
248 | }; |
249 | ||
250 | static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) | |
251 | { | |
252 | return (struct ethnl_dump_ctx *)cb->ctx; | |
253 | } | |
254 | ||
255 | /** | |
256 | * ethnl_default_parse() - Parse request message | |
257 | * @req_info: pointer to structure to put data into | |
4f30974f | 258 | * @tb: parsed attributes |
728480f1 MK |
259 | * @net: request netns |
260 | * @request_ops: struct request_ops for request type | |
261 | * @extack: netlink extack for error reporting | |
262 | * @require_dev: fail if no device identified in header | |
263 | * | |
264 | * Parse universal request header and call request specific ->parse_request() | |
265 | * callback (if defined) to parse the rest of the message. | |
266 | * | |
267 | * Return: 0 on success or negative error code | |
268 | */ | |
269 | static int ethnl_default_parse(struct ethnl_req_info *req_info, | |
4f30974f | 270 | struct nlattr **tb, struct net *net, |
728480f1 MK |
271 | const struct ethnl_request_ops *request_ops, |
272 | struct netlink_ext_ack *extack, bool require_dev) | |
273 | { | |
728480f1 MK |
274 | int ret; |
275 | ||
98130546 MK |
276 | ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], |
277 | net, extack, require_dev); | |
728480f1 | 278 | if (ret < 0) |
4f30974f | 279 | return ret; |
728480f1 MK |
280 | |
281 | if (request_ops->parse_request) { | |
282 | ret = request_ops->parse_request(req_info, tb, extack); | |
283 | if (ret < 0) | |
4f30974f | 284 | return ret; |
728480f1 MK |
285 | } |
286 | ||
4f30974f | 287 | return 0; |
728480f1 MK |
288 | } |
289 | ||
290 | /** | |
291 | * ethnl_init_reply_data() - Initialize reply data for GET request | |
d2c4b444 MK |
292 | * @reply_data: pointer to embedded struct ethnl_reply_data |
293 | * @ops: instance of struct ethnl_request_ops describing the layout | |
294 | * @dev: network device to initialize the reply for | |
728480f1 MK |
295 | * |
296 | * Fills the reply data part with zeros and sets the dev member. Must be called | |
297 | * before calling the ->fill_reply() callback (for each iteration when handling | |
298 | * dump requests). | |
299 | */ | |
300 | static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, | |
301 | const struct ethnl_request_ops *ops, | |
302 | struct net_device *dev) | |
303 | { | |
304 | memset(reply_data, 0, ops->reply_data_size); | |
305 | reply_data->dev = dev; | |
306 | } | |
307 | ||
308 | /* default ->doit() handler for GET type requests */ | |
309 | static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) | |
310 | { | |
311 | struct ethnl_reply_data *reply_data = NULL; | |
312 | struct ethnl_req_info *req_info = NULL; | |
313 | const u8 cmd = info->genlhdr->cmd; | |
314 | const struct ethnl_request_ops *ops; | |
315 | struct sk_buff *rskb; | |
316 | void *reply_payload; | |
317 | int reply_len; | |
318 | int ret; | |
319 | ||
320 | ops = ethnl_default_requests[cmd]; | |
321 | if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) | |
322 | return -EOPNOTSUPP; | |
323 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); | |
324 | if (!req_info) | |
325 | return -ENOMEM; | |
326 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); | |
327 | if (!reply_data) { | |
328 | kfree(req_info); | |
329 | return -ENOMEM; | |
330 | } | |
331 | ||
4f30974f JK |
332 | ret = ethnl_default_parse(req_info, info->attrs, genl_info_net(info), |
333 | ops, info->extack, !ops->allow_nodev_do); | |
728480f1 MK |
334 | if (ret < 0) |
335 | goto err_dev; | |
336 | ethnl_init_reply_data(reply_data, ops, req_info->dev); | |
337 | ||
338 | rtnl_lock(); | |
339 | ret = ops->prepare_data(req_info, reply_data, info); | |
340 | rtnl_unlock(); | |
341 | if (ret < 0) | |
342 | goto err_cleanup; | |
d97772db | 343 | ret = ops->reply_size(req_info, reply_data); |
728480f1 MK |
344 | if (ret < 0) |
345 | goto err_cleanup; | |
7c87e32d | 346 | reply_len = ret + ethnl_reply_header_size(); |
728480f1 MK |
347 | ret = -ENOMEM; |
348 | rskb = ethnl_reply_init(reply_len, req_info->dev, ops->reply_cmd, | |
349 | ops->hdr_attr, info, &reply_payload); | |
350 | if (!rskb) | |
351 | goto err_cleanup; | |
352 | ret = ops->fill_reply(rskb, req_info, reply_data); | |
353 | if (ret < 0) | |
354 | goto err_msg; | |
355 | if (ops->cleanup_data) | |
356 | ops->cleanup_data(reply_data); | |
357 | ||
358 | genlmsg_end(rskb, reply_payload); | |
359 | if (req_info->dev) | |
360 | dev_put(req_info->dev); | |
361 | kfree(reply_data); | |
362 | kfree(req_info); | |
363 | return genlmsg_reply(rskb, info); | |
364 | ||
365 | err_msg: | |
366 | WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); | |
367 | nlmsg_free(rskb); | |
368 | err_cleanup: | |
369 | if (ops->cleanup_data) | |
370 | ops->cleanup_data(reply_data); | |
371 | err_dev: | |
372 | if (req_info->dev) | |
373 | dev_put(req_info->dev); | |
374 | kfree(reply_data); | |
375 | kfree(req_info); | |
376 | return ret; | |
377 | } | |
378 | ||
379 | static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, | |
365f9ae4 MK |
380 | const struct ethnl_dump_ctx *ctx, |
381 | struct netlink_callback *cb) | |
728480f1 | 382 | { |
365f9ae4 | 383 | void *ehdr; |
728480f1 MK |
384 | int ret; |
385 | ||
365f9ae4 MK |
386 | ehdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
387 | ðtool_genl_family, 0, ctx->ops->reply_cmd); | |
388 | if (!ehdr) | |
389 | return -EMSGSIZE; | |
390 | ||
728480f1 MK |
391 | ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); |
392 | rtnl_lock(); | |
393 | ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, NULL); | |
394 | rtnl_unlock(); | |
395 | if (ret < 0) | |
396 | goto out; | |
397 | ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); | |
398 | if (ret < 0) | |
399 | goto out; | |
400 | ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); | |
401 | ||
402 | out: | |
403 | if (ctx->ops->cleanup_data) | |
404 | ctx->ops->cleanup_data(ctx->reply_data); | |
405 | ctx->reply_data->dev = NULL; | |
365f9ae4 MK |
406 | if (ret < 0) |
407 | genlmsg_cancel(skb, ehdr); | |
408 | else | |
409 | genlmsg_end(skb, ehdr); | |
728480f1 MK |
410 | return ret; |
411 | } | |
412 | ||
413 | /* Default ->dumpit() handler for GET requests. Device iteration copied from | |
414 | * rtnl_dump_ifinfo(); we have to be more careful about device hashtable | |
415 | * persistence as we cannot guarantee to hold RTNL lock through the whole | |
416 | * function as rtnetnlink does. | |
417 | */ | |
418 | static int ethnl_default_dumpit(struct sk_buff *skb, | |
419 | struct netlink_callback *cb) | |
420 | { | |
421 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); | |
422 | struct net *net = sock_net(skb->sk); | |
423 | int s_idx = ctx->pos_idx; | |
424 | int h, idx = 0; | |
425 | int ret = 0; | |
728480f1 MK |
426 | |
427 | rtnl_lock(); | |
428 | for (h = ctx->pos_hash; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
429 | struct hlist_head *head; | |
430 | struct net_device *dev; | |
431 | unsigned int seq; | |
432 | ||
433 | head = &net->dev_index_head[h]; | |
434 | ||
435 | restart_chain: | |
436 | seq = net->dev_base_seq; | |
437 | cb->seq = seq; | |
438 | idx = 0; | |
439 | hlist_for_each_entry(dev, head, index_hlist) { | |
440 | if (idx < s_idx) | |
441 | goto cont; | |
442 | dev_hold(dev); | |
443 | rtnl_unlock(); | |
444 | ||
365f9ae4 | 445 | ret = ethnl_default_dump_one(skb, dev, ctx, cb); |
728480f1 MK |
446 | dev_put(dev); |
447 | if (ret < 0) { | |
728480f1 MK |
448 | if (ret == -EOPNOTSUPP) |
449 | goto lock_and_cont; | |
450 | if (likely(skb->len)) | |
451 | ret = skb->len; | |
452 | goto out; | |
453 | } | |
728480f1 MK |
454 | lock_and_cont: |
455 | rtnl_lock(); | |
456 | if (net->dev_base_seq != seq) { | |
457 | s_idx = idx + 1; | |
458 | goto restart_chain; | |
459 | } | |
460 | cont: | |
461 | idx++; | |
462 | } | |
463 | ||
464 | } | |
465 | rtnl_unlock(); | |
466 | ||
467 | out: | |
468 | ctx->pos_hash = h; | |
469 | ctx->pos_idx = idx; | |
470 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
471 | ||
472 | return ret; | |
473 | } | |
474 | ||
475 | /* generic ->start() handler for GET requests */ | |
476 | static int ethnl_default_start(struct netlink_callback *cb) | |
477 | { | |
4f30974f | 478 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
728480f1 MK |
479 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); |
480 | struct ethnl_reply_data *reply_data; | |
481 | const struct ethnl_request_ops *ops; | |
482 | struct ethnl_req_info *req_info; | |
483 | struct genlmsghdr *ghdr; | |
484 | int ret; | |
485 | ||
486 | BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); | |
487 | ||
488 | ghdr = nlmsg_data(cb->nlh); | |
489 | ops = ethnl_default_requests[ghdr->cmd]; | |
490 | if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) | |
491 | return -EOPNOTSUPP; | |
492 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); | |
493 | if (!req_info) | |
494 | return -ENOMEM; | |
495 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); | |
496 | if (!reply_data) { | |
a6dd0480 DC |
497 | ret = -ENOMEM; |
498 | goto free_req_info; | |
728480f1 MK |
499 | } |
500 | ||
4f30974f JK |
501 | ret = ethnl_default_parse(req_info, info->attrs, sock_net(cb->skb->sk), |
502 | ops, cb->extack, false); | |
728480f1 MK |
503 | if (req_info->dev) { |
504 | /* We ignore device specification in dump requests but as the | |
505 | * same parser as for non-dump (doit) requests is used, it | |
506 | * would take reference to the device if it finds one | |
507 | */ | |
508 | dev_put(req_info->dev); | |
509 | req_info->dev = NULL; | |
510 | } | |
511 | if (ret < 0) | |
a6dd0480 | 512 | goto free_reply_data; |
728480f1 MK |
513 | |
514 | ctx->ops = ops; | |
515 | ctx->req_info = req_info; | |
516 | ctx->reply_data = reply_data; | |
517 | ctx->pos_hash = 0; | |
518 | ctx->pos_idx = 0; | |
519 | ||
520 | return 0; | |
a6dd0480 DC |
521 | |
522 | free_reply_data: | |
523 | kfree(reply_data); | |
524 | free_req_info: | |
525 | kfree(req_info); | |
526 | ||
527 | return ret; | |
728480f1 MK |
528 | } |
529 | ||
530 | /* default ->done() handler for GET requests */ | |
531 | static int ethnl_default_done(struct netlink_callback *cb) | |
532 | { | |
533 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); | |
534 | ||
535 | kfree(ctx->reply_data); | |
536 | kfree(ctx->req_info); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
5cf2a548 MK |
541 | static const struct ethnl_request_ops * |
542 | ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { | |
73286734 | 543 | [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, |
1b1b1847 | 544 | [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, |
0bda7af3 | 545 | [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, |
67bffa79 | 546 | [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, |
9c6451ef | 547 | [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, |
111dcba3 | 548 | [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, |
bc9d1c99 | 549 | [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, |
546379b9 | 550 | [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, |
0cf3eac8 | 551 | [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, |
bf37faa3 | 552 | [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, |
6c5bc8fe | 553 | [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, |
5cf2a548 MK |
554 | }; |
555 | ||
556 | /* default notification handler */ | |
557 | static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, | |
558 | const void *data) | |
559 | { | |
560 | struct ethnl_reply_data *reply_data; | |
561 | const struct ethnl_request_ops *ops; | |
562 | struct ethnl_req_info *req_info; | |
563 | struct sk_buff *skb; | |
564 | void *reply_payload; | |
565 | int reply_len; | |
566 | int ret; | |
567 | ||
568 | if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || | |
569 | !ethnl_default_notify_ops[cmd], | |
570 | "unexpected notification type %u\n", cmd)) | |
571 | return; | |
572 | ops = ethnl_default_notify_ops[cmd]; | |
573 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); | |
574 | if (!req_info) | |
575 | return; | |
576 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); | |
577 | if (!reply_data) { | |
578 | kfree(req_info); | |
579 | return; | |
580 | } | |
581 | ||
582 | req_info->dev = dev; | |
583 | req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; | |
584 | ||
585 | ethnl_init_reply_data(reply_data, ops, dev); | |
586 | ret = ops->prepare_data(req_info, reply_data, NULL); | |
587 | if (ret < 0) | |
588 | goto err_cleanup; | |
d97772db | 589 | ret = ops->reply_size(req_info, reply_data); |
5cf2a548 MK |
590 | if (ret < 0) |
591 | goto err_cleanup; | |
7c87e32d | 592 | reply_len = ret + ethnl_reply_header_size(); |
5cf2a548 MK |
593 | ret = -ENOMEM; |
594 | skb = genlmsg_new(reply_len, GFP_KERNEL); | |
595 | if (!skb) | |
596 | goto err_cleanup; | |
597 | reply_payload = ethnl_bcastmsg_put(skb, cmd); | |
598 | if (!reply_payload) | |
599 | goto err_skb; | |
600 | ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); | |
601 | if (ret < 0) | |
602 | goto err_msg; | |
603 | ret = ops->fill_reply(skb, req_info, reply_data); | |
604 | if (ret < 0) | |
605 | goto err_msg; | |
606 | if (ops->cleanup_data) | |
607 | ops->cleanup_data(reply_data); | |
608 | ||
609 | genlmsg_end(skb, reply_payload); | |
610 | kfree(reply_data); | |
611 | kfree(req_info); | |
612 | ethnl_multicast(skb, dev); | |
613 | return; | |
614 | ||
615 | err_msg: | |
616 | WARN_ONCE(ret == -EMSGSIZE, | |
617 | "calculated message payload length (%d) not sufficient\n", | |
618 | reply_len); | |
619 | err_skb: | |
620 | nlmsg_free(skb); | |
621 | err_cleanup: | |
622 | if (ops->cleanup_data) | |
623 | ops->cleanup_data(reply_data); | |
624 | kfree(reply_data); | |
625 | kfree(req_info); | |
626 | return; | |
627 | } | |
628 | ||
6b08d6c1 MK |
629 | /* notifications */ |
630 | ||
631 | typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, | |
632 | const void *data); | |
633 | ||
634 | static const ethnl_notify_handler_t ethnl_notify_handlers[] = { | |
73286734 | 635 | [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, |
1b1b1847 | 636 | [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, |
0bda7af3 | 637 | [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, |
67bffa79 | 638 | [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, |
9c6451ef | 639 | [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, |
111dcba3 | 640 | [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, |
bc9d1c99 | 641 | [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, |
546379b9 | 642 | [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, |
0cf3eac8 | 643 | [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, |
bf37faa3 | 644 | [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, |
6c5bc8fe | 645 | [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, |
6b08d6c1 MK |
646 | }; |
647 | ||
648 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) | |
649 | { | |
650 | if (unlikely(!ethnl_ok)) | |
651 | return; | |
652 | ASSERT_RTNL(); | |
653 | ||
654 | if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && | |
655 | ethnl_notify_handlers[cmd])) | |
656 | ethnl_notify_handlers[cmd](dev, cmd, data); | |
657 | else | |
658 | WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", | |
659 | cmd, netdev_name(dev)); | |
660 | } | |
661 | EXPORT_SYMBOL(ethtool_notify); | |
662 | ||
9c6451ef MK |
663 | static void ethnl_notify_features(struct netdev_notifier_info *info) |
664 | { | |
665 | struct net_device *dev = netdev_notifier_info_to_dev(info); | |
666 | ||
667 | ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); | |
668 | } | |
669 | ||
670 | static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, | |
671 | void *ptr) | |
672 | { | |
673 | switch (event) { | |
674 | case NETDEV_FEAT_CHANGE: | |
675 | ethnl_notify_features(ptr); | |
676 | break; | |
677 | } | |
678 | ||
679 | return NOTIFY_DONE; | |
680 | } | |
681 | ||
682 | static struct notifier_block ethnl_netdev_notifier = { | |
683 | .notifier_call = ethnl_netdev_event, | |
684 | }; | |
685 | ||
2b4a8990 MK |
686 | /* genetlink setup */ |
687 | ||
688 | static const struct genl_ops ethtool_genl_ops[] = { | |
71921690 MK |
689 | { |
690 | .cmd = ETHTOOL_MSG_STRSET_GET, | |
691 | .doit = ethnl_default_doit, | |
692 | .start = ethnl_default_start, | |
693 | .dumpit = ethnl_default_dumpit, | |
694 | .done = ethnl_default_done, | |
4f30974f JK |
695 | .policy = ethnl_strset_get_policy, |
696 | .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, | |
71921690 | 697 | }, |
459e0b81 MK |
698 | { |
699 | .cmd = ETHTOOL_MSG_LINKINFO_GET, | |
700 | .doit = ethnl_default_doit, | |
701 | .start = ethnl_default_start, | |
702 | .dumpit = ethnl_default_dumpit, | |
703 | .done = ethnl_default_done, | |
4f30974f JK |
704 | .policy = ethnl_linkinfo_get_policy, |
705 | .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, | |
459e0b81 | 706 | }, |
a53f3d41 MK |
707 | { |
708 | .cmd = ETHTOOL_MSG_LINKINFO_SET, | |
709 | .flags = GENL_UNS_ADMIN_PERM, | |
710 | .doit = ethnl_set_linkinfo, | |
5028588b JK |
711 | .policy = ethnl_linkinfo_set_policy, |
712 | .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, | |
a53f3d41 | 713 | }, |
f625aa9b MK |
714 | { |
715 | .cmd = ETHTOOL_MSG_LINKMODES_GET, | |
716 | .doit = ethnl_default_doit, | |
717 | .start = ethnl_default_start, | |
718 | .dumpit = ethnl_default_dumpit, | |
719 | .done = ethnl_default_done, | |
4f30974f JK |
720 | .policy = ethnl_linkmodes_get_policy, |
721 | .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, | |
f625aa9b | 722 | }, |
bfbcfe20 MK |
723 | { |
724 | .cmd = ETHTOOL_MSG_LINKMODES_SET, | |
725 | .flags = GENL_UNS_ADMIN_PERM, | |
726 | .doit = ethnl_set_linkmodes, | |
5028588b JK |
727 | .policy = ethnl_linkmodes_set_policy, |
728 | .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, | |
bfbcfe20 | 729 | }, |
3d2b847f MK |
730 | { |
731 | .cmd = ETHTOOL_MSG_LINKSTATE_GET, | |
732 | .doit = ethnl_default_doit, | |
733 | .start = ethnl_default_start, | |
734 | .dumpit = ethnl_default_dumpit, | |
735 | .done = ethnl_default_done, | |
4f30974f JK |
736 | .policy = ethnl_linkstate_get_policy, |
737 | .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, | |
3d2b847f | 738 | }, |
6a94b8cc MK |
739 | { |
740 | .cmd = ETHTOOL_MSG_DEBUG_GET, | |
741 | .doit = ethnl_default_doit, | |
742 | .start = ethnl_default_start, | |
743 | .dumpit = ethnl_default_dumpit, | |
744 | .done = ethnl_default_done, | |
4f30974f JK |
745 | .policy = ethnl_debug_get_policy, |
746 | .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, | |
6a94b8cc | 747 | }, |
e54d04e3 MK |
748 | { |
749 | .cmd = ETHTOOL_MSG_DEBUG_SET, | |
750 | .flags = GENL_UNS_ADMIN_PERM, | |
751 | .doit = ethnl_set_debug, | |
5028588b JK |
752 | .policy = ethnl_debug_set_policy, |
753 | .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, | |
e54d04e3 | 754 | }, |
51ea22b0 MK |
755 | { |
756 | .cmd = ETHTOOL_MSG_WOL_GET, | |
757 | .flags = GENL_UNS_ADMIN_PERM, | |
758 | .doit = ethnl_default_doit, | |
759 | .start = ethnl_default_start, | |
760 | .dumpit = ethnl_default_dumpit, | |
761 | .done = ethnl_default_done, | |
4f30974f JK |
762 | .policy = ethnl_wol_get_policy, |
763 | .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, | |
51ea22b0 | 764 | }, |
8d425b19 MK |
765 | { |
766 | .cmd = ETHTOOL_MSG_WOL_SET, | |
767 | .flags = GENL_UNS_ADMIN_PERM, | |
768 | .doit = ethnl_set_wol, | |
5028588b JK |
769 | .policy = ethnl_wol_set_policy, |
770 | .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, | |
8d425b19 | 771 | }, |
0524399d MK |
772 | { |
773 | .cmd = ETHTOOL_MSG_FEATURES_GET, | |
774 | .doit = ethnl_default_doit, | |
775 | .start = ethnl_default_start, | |
776 | .dumpit = ethnl_default_dumpit, | |
777 | .done = ethnl_default_done, | |
4f30974f JK |
778 | .policy = ethnl_features_get_policy, |
779 | .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, | |
0524399d | 780 | }, |
0980bfcd MK |
781 | { |
782 | .cmd = ETHTOOL_MSG_FEATURES_SET, | |
783 | .flags = GENL_UNS_ADMIN_PERM, | |
784 | .doit = ethnl_set_features, | |
5028588b JK |
785 | .policy = ethnl_features_set_policy, |
786 | .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, | |
0980bfcd | 787 | }, |
e16c3386 MK |
788 | { |
789 | .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, | |
790 | .doit = ethnl_default_doit, | |
791 | .start = ethnl_default_start, | |
792 | .dumpit = ethnl_default_dumpit, | |
793 | .done = ethnl_default_done, | |
4f30974f JK |
794 | .policy = ethnl_privflags_get_policy, |
795 | .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, | |
e16c3386 | 796 | }, |
f265d799 MK |
797 | { |
798 | .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, | |
799 | .flags = GENL_UNS_ADMIN_PERM, | |
800 | .doit = ethnl_set_privflags, | |
5028588b JK |
801 | .policy = ethnl_privflags_set_policy, |
802 | .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, | |
f265d799 | 803 | }, |
e4a1717b MK |
804 | { |
805 | .cmd = ETHTOOL_MSG_RINGS_GET, | |
806 | .doit = ethnl_default_doit, | |
807 | .start = ethnl_default_start, | |
808 | .dumpit = ethnl_default_dumpit, | |
809 | .done = ethnl_default_done, | |
4f30974f JK |
810 | .policy = ethnl_rings_get_policy, |
811 | .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, | |
e4a1717b | 812 | }, |
2fc2929e MK |
813 | { |
814 | .cmd = ETHTOOL_MSG_RINGS_SET, | |
815 | .flags = GENL_UNS_ADMIN_PERM, | |
816 | .doit = ethnl_set_rings, | |
5028588b JK |
817 | .policy = ethnl_rings_set_policy, |
818 | .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, | |
2fc2929e | 819 | }, |
0c84979c MK |
820 | { |
821 | .cmd = ETHTOOL_MSG_CHANNELS_GET, | |
822 | .doit = ethnl_default_doit, | |
823 | .start = ethnl_default_start, | |
824 | .dumpit = ethnl_default_dumpit, | |
825 | .done = ethnl_default_done, | |
4f30974f JK |
826 | .policy = ethnl_channels_get_policy, |
827 | .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, | |
0c84979c | 828 | }, |
e19c591e MK |
829 | { |
830 | .cmd = ETHTOOL_MSG_CHANNELS_SET, | |
831 | .flags = GENL_UNS_ADMIN_PERM, | |
832 | .doit = ethnl_set_channels, | |
fd15dd05 JB |
833 | .policy = ethnl_channels_set_policy, |
834 | .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, | |
e19c591e | 835 | }, |
21727545 MK |
836 | { |
837 | .cmd = ETHTOOL_MSG_COALESCE_GET, | |
838 | .doit = ethnl_default_doit, | |
839 | .start = ethnl_default_start, | |
840 | .dumpit = ethnl_default_dumpit, | |
841 | .done = ethnl_default_done, | |
4f30974f JK |
842 | .policy = ethnl_coalesce_get_policy, |
843 | .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, | |
21727545 | 844 | }, |
9881418c MK |
845 | { |
846 | .cmd = ETHTOOL_MSG_COALESCE_SET, | |
847 | .flags = GENL_UNS_ADMIN_PERM, | |
848 | .doit = ethnl_set_coalesce, | |
5028588b JK |
849 | .policy = ethnl_coalesce_set_policy, |
850 | .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, | |
9881418c | 851 | }, |
7f59fb32 MK |
852 | { |
853 | .cmd = ETHTOOL_MSG_PAUSE_GET, | |
854 | .doit = ethnl_default_doit, | |
855 | .start = ethnl_default_start, | |
856 | .dumpit = ethnl_default_dumpit, | |
857 | .done = ethnl_default_done, | |
4f30974f JK |
858 | .policy = ethnl_pause_get_policy, |
859 | .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, | |
7f59fb32 | 860 | }, |
3ab87993 MK |
861 | { |
862 | .cmd = ETHTOOL_MSG_PAUSE_SET, | |
863 | .flags = GENL_UNS_ADMIN_PERM, | |
864 | .doit = ethnl_set_pause, | |
5028588b JK |
865 | .policy = ethnl_pause_set_policy, |
866 | .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, | |
3ab87993 | 867 | }, |
b7eeefe7 MK |
868 | { |
869 | .cmd = ETHTOOL_MSG_EEE_GET, | |
870 | .doit = ethnl_default_doit, | |
871 | .start = ethnl_default_start, | |
872 | .dumpit = ethnl_default_dumpit, | |
873 | .done = ethnl_default_done, | |
4f30974f JK |
874 | .policy = ethnl_eee_get_policy, |
875 | .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, | |
b7eeefe7 | 876 | }, |
fd77be7b MK |
877 | { |
878 | .cmd = ETHTOOL_MSG_EEE_SET, | |
879 | .flags = GENL_UNS_ADMIN_PERM, | |
880 | .doit = ethnl_set_eee, | |
5028588b JK |
881 | .policy = ethnl_eee_set_policy, |
882 | .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, | |
fd77be7b | 883 | }, |
5b071c59 MK |
884 | { |
885 | .cmd = ETHTOOL_MSG_TSINFO_GET, | |
886 | .doit = ethnl_default_doit, | |
887 | .start = ethnl_default_start, | |
888 | .dumpit = ethnl_default_dumpit, | |
889 | .done = ethnl_default_done, | |
4f30974f JK |
890 | .policy = ethnl_tsinfo_get_policy, |
891 | .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, | |
5b071c59 | 892 | }, |
11ca3c42 AL |
893 | { |
894 | .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, | |
895 | .flags = GENL_UNS_ADMIN_PERM, | |
896 | .doit = ethnl_act_cable_test, | |
5028588b JK |
897 | .policy = ethnl_cable_test_act_policy, |
898 | .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, | |
11ca3c42 | 899 | }, |
1a644de2 AL |
900 | { |
901 | .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, | |
902 | .flags = GENL_UNS_ADMIN_PERM, | |
903 | .doit = ethnl_act_cable_test_tdr, | |
5028588b JK |
904 | .policy = ethnl_cable_test_tdr_act_policy, |
905 | .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, | |
1a644de2 | 906 | }, |
c7d759eb JK |
907 | { |
908 | .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, | |
909 | .doit = ethnl_tunnel_info_doit, | |
910 | .start = ethnl_tunnel_info_start, | |
911 | .dumpit = ethnl_tunnel_info_dumpit, | |
4f30974f JK |
912 | .policy = ethnl_tunnel_info_get_policy, |
913 | .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, | |
c7d759eb | 914 | }, |
2b4a8990 MK |
915 | }; |
916 | ||
6b08d6c1 MK |
917 | static const struct genl_multicast_group ethtool_nl_mcgrps[] = { |
918 | [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, | |
919 | }; | |
920 | ||
78b70155 | 921 | static struct genl_family ethtool_genl_family __ro_after_init = { |
2b4a8990 MK |
922 | .name = ETHTOOL_GENL_NAME, |
923 | .version = ETHTOOL_GENL_VERSION, | |
924 | .netnsok = true, | |
925 | .parallel_ops = true, | |
926 | .ops = ethtool_genl_ops, | |
927 | .n_ops = ARRAY_SIZE(ethtool_genl_ops), | |
6b08d6c1 MK |
928 | .mcgrps = ethtool_nl_mcgrps, |
929 | .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), | |
2b4a8990 MK |
930 | }; |
931 | ||
932 | /* module setup */ | |
933 | ||
934 | static int __init ethnl_init(void) | |
935 | { | |
936 | int ret; | |
937 | ||
938 | ret = genl_register_family(ðtool_genl_family); | |
939 | if (WARN(ret < 0, "ethtool: genetlink family registration failed")) | |
940 | return ret; | |
6b08d6c1 | 941 | ethnl_ok = true; |
2b4a8990 | 942 | |
9c6451ef MK |
943 | ret = register_netdevice_notifier(ðnl_netdev_notifier); |
944 | WARN(ret < 0, "ethtool: net device notifier registration failed"); | |
945 | return ret; | |
2b4a8990 MK |
946 | } |
947 | ||
948 | subsys_initcall(ethnl_init); |