1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include <net/sock.h>
4 #include <linux/ethtool_netlink.h>
5 #include <linux/pm_runtime.h>
6 #include "netlink.h"
7 #include "module_fw.h"
8
9 static struct genl_family ethtool_genl_family;
10
11 static bool ethnl_ok __read_mostly;
12 static u32 ethnl_bcast_seq;
13
14 #define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \
15 ETHTOOL_FLAG_OMIT_REPLY)
16 #define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS)
17
18 const struct nla_policy ethnl_header_policy[] = {
19 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 },
20 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING,
21 .len = ALTIFNAMSIZ - 1 },
22 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32,
23 ETHTOOL_FLAGS_BASIC),
24 };
25
26 const struct nla_policy ethnl_header_policy_stats[] = {
27 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 },
28 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING,
29 .len = ALTIFNAMSIZ - 1 },
30 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32,
31 ETHTOOL_FLAGS_STATS),
32 };
33
34 int ethnl_sock_priv_set(struct sk_buff *skb, struct net_device *dev, u32 portid,
35 enum ethnl_sock_type type)
36 {
37 struct ethnl_sock_priv *sk_priv;
38
39 sk_priv = genl_sk_priv_get(ðtool_genl_family, NETLINK_CB(skb).sk);
40 if (IS_ERR(sk_priv))
41 return PTR_ERR(sk_priv);
42
43 sk_priv->dev = dev;
44 sk_priv->portid = portid;
45 sk_priv->type = type;
46
47 return 0;
48 }
49
50 static void ethnl_sock_priv_destroy(void *priv)
51 {
52 struct ethnl_sock_priv *sk_priv = priv;
53
54 switch (sk_priv->type) {
55 case ETHTOOL_SOCK_TYPE_MODULE_FW_FLASH:
56 ethnl_module_fw_flash_sock_destroy(sk_priv);
57 break;
58 default:
59 break;
60 }
61 }
62
63 int ethnl_ops_begin(struct net_device *dev)
64 {
65 int ret;
66
67 if (!dev)
68 return -ENODEV;
69
70 if (dev->dev.parent)
71 pm_runtime_get_sync(dev->dev.parent);
72
73 if (!netif_device_present(dev) ||
74 dev->reg_state == NETREG_UNREGISTERING) {
75 ret = -ENODEV;
76 goto err;
77 }
78
79 if (dev->ethtool_ops->begin) {
80 ret = dev->ethtool_ops->begin(dev);
81 if (ret)
82 goto err;
83 }
84
85 return 0;
86 err:
87 if (dev->dev.parent)
88 pm_runtime_put(dev->dev.parent);
89
90 return ret;
91 }
92
93 void ethnl_ops_complete(struct net_device *dev)
94 {
95 if (dev->ethtool_ops->complete)
96 dev->ethtool_ops->complete(dev);
97
98 if (dev->dev.parent)
99 pm_runtime_put(dev->dev.parent);
100 }
101
102 /**
103 * ethnl_parse_header_dev_get() - parse request header
104 * @req_info: structure to put results into
105 * @header: nest attribute with request header
106 * @net: request netns
107 * @extack: netlink extack for error reporting
108 * @require_dev: fail if no device identified in header
109 *
110 * Parse request header in nested attribute @nest and puts results into
111 * the structure pointed to by @req_info. Extack from @info is used for error
112 * reporting. If req_info->dev is not null on return, reference to it has
113 * been taken. If error is returned, *req_info is null initialized and no
114 * reference is held.
115 *
116 * Return: 0 on success or negative error code
117 */
118 int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info,
119 const struct nlattr *header, struct net *net,
120 struct netlink_ext_ack *extack, bool require_dev)
121 {
122 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)];
123 const struct nlattr *devname_attr;
124 struct net_device *dev = NULL;
125 u32 flags = 0;
126 int ret;
127
128 if (!header) {
129 if (!require_dev)
130 return 0;
131 NL_SET_ERR_MSG(extack, "request header missing");
132 return -EINVAL;
133 }
134 /* No validation here, command policy should have a nested policy set
135 * for the header, therefore validation should have already been done.
136 */
137 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header,
138 NULL, extack);
139 if (ret < 0)
140 return ret;
141 if (tb[ETHTOOL_A_HEADER_FLAGS])
142 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]);
143
144 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME];
145 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) {
146 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]);
147
148 dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker,
149 GFP_KERNEL);
150 if (!dev) {
151 NL_SET_ERR_MSG_ATTR(extack,
152 tb[ETHTOOL_A_HEADER_DEV_INDEX],
153 "no device matches ifindex");
154 return -ENODEV;
155 }
156 /* if both ifindex and ifname are passed, they must match */
157 if (devname_attr &&
158 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) {
159 netdev_put(dev, &req_info->dev_tracker);
160 NL_SET_ERR_MSG_ATTR(extack, header,
161 "ifindex and name do not match");
162 return -ENODEV;
163 }
164 } else if (devname_attr) {
165 dev = netdev_get_by_name(net, nla_data(devname_attr),
166 &req_info->dev_tracker, GFP_KERNEL);
167 if (!dev) {
168 NL_SET_ERR_MSG_ATTR(extack, devname_attr,
169 "no device matches name");
170 return -ENODEV;
171 }
172 } else if (require_dev) {
173 NL_SET_ERR_MSG_ATTR(extack, header,
174 "neither ifindex nor name specified");
175 return -EINVAL;
176 }
177
178 req_info->dev = dev;
179 req_info->flags = flags;
180 return 0;
181 }
182
183 /**
184 * ethnl_fill_reply_header() - Put common header into a reply message
185 * @skb: skb with the message
186 * @dev: network device to describe in header
187 * @attrtype: attribute type to use for the nest
188 *
189 * Create a nested attribute with attributes describing given network device.
190 *
191 * Return: 0 on success, error value (-EMSGSIZE only) on error
192 */
193 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev,
194 u16 attrtype)
195 {
196 struct nlattr *nest;
197
198 if (!dev)
199 return 0;
200 nest = nla_nest_start(skb, attrtype);
201 if (!nest)
202 return -EMSGSIZE;
203
204 if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) ||
205 nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name))
206 goto nla_put_failure;
207 /* If more attributes are put into reply header, ethnl_header_size()
208 * must be updated to account for them.
209 */
210
211 nla_nest_end(skb, nest);
212 return 0;
213
214 nla_put_failure:
215 nla_nest_cancel(skb, nest);
216 return -EMSGSIZE;
217 }
218
219 /**
220 * ethnl_reply_init() - Create skb for a reply and fill device identification
221 * @payload: payload length (without netlink and genetlink header)
222 * @dev: device the reply is about (may be null)
223 * @cmd: ETHTOOL_MSG_* message type for reply
224 * @hdr_attrtype: attribute type for common header
225 * @info: genetlink info of the received packet we respond to
226 * @ehdrp: place to store payload pointer returned by genlmsg_new()
227 *
228 * Return: pointer to allocated skb on success, NULL on error
229 */
230 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd,
231 u16 hdr_attrtype, struct genl_info *info,
232 void **ehdrp)
233 {
234 struct sk_buff *skb;
235
236 skb = genlmsg_new(payload, GFP_KERNEL);
237 if (!skb)
238 goto err;
239 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd);
240 if (!*ehdrp)
241 goto err_free;
242
243 if (dev) {
244 int ret;
245
246 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype);
247 if (ret < 0)
248 goto err_free;
249 }
250 return skb;
251
252 err_free:
253 nlmsg_free(skb);
254 err:
255 if (info)
256 GENL_SET_ERR_MSG(info, "failed to setup reply message");
257 return NULL;
258 }
259
260 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd)
261 {
262 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
263 ðtool_genl_family, 0, cmd);
264 }
265
266 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd)
267 {
268 return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0,
269 cmd);
270 }
271
272 void *ethnl_unicast_put(struct sk_buff *skb, u32 portid, u32 seq, u8 cmd)
273 {
274 return genlmsg_put(skb, portid, seq, ðtool_genl_family, 0, cmd);
275 }
276
277 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev)
278 {
279 return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb,
280 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL);
281 }
282
283 /* GET request helpers */
284
285 /**
286 * struct ethnl_dump_ctx - context structure for generic dumpit() callback
287 * @ops: request ops of currently processed message type
288 * @req_info: parsed request header of processed request
289 * @reply_data: data needed to compose the reply
290 * @pos_ifindex: saved iteration position - ifindex
291 *
292 * These parameters are kept in struct netlink_callback as context preserved
293 * between iterations. They are initialized by ethnl_default_start() and used
294 * in ethnl_default_dumpit() and ethnl_default_done().
295 */
296 struct ethnl_dump_ctx {
297 const struct ethnl_request_ops *ops;
298 struct ethnl_req_info *req_info;
299 struct ethnl_reply_data *reply_data;
300 unsigned long pos_ifindex;
301 };
302
303 static const struct ethnl_request_ops *
304 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
305 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops,
306 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops,
307 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops,
308 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops,
309 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops,
310 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops,
311 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops,
312 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops,
313 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops,
314 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops,
315 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops,
316 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops,
317 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops,
318 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops,
319 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops,
320 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops,
321 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops,
322 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops,
323 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops,
324 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops,
325 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops,
326 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops,
327 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops,
328 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops,
329 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops,
330 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops,
331 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops,
332 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops,
333 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops,
334 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops,
335 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops,
336 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops,
337 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops,
338 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops,
339 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops,
340 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops,
341 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops,
342 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops,
343 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops,
344 };
345
346 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb)
347 {
348 return (struct ethnl_dump_ctx *)cb->ctx;
349 }
350
351 /**
352 * ethnl_default_parse() - Parse request message
353 * @req_info: pointer to structure to put data into
354 * @info: genl_info from the request
355 * @request_ops: struct request_ops for request type
356 * @require_dev: fail if no device identified in header
357 *
358 * Parse universal request header and call request specific ->parse_request()
359 * callback (if defined) to parse the rest of the message.
360 *
361 * Return: 0 on success or negative error code
362 */
363 static int ethnl_default_parse(struct ethnl_req_info *req_info,
364 const struct genl_info *info,
365 const struct ethnl_request_ops *request_ops,
366 bool require_dev)
367 {
368 struct nlattr **tb = info->attrs;
369 int ret;
370
371 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr],
372 genl_info_net(info), info->extack,
373 require_dev);
374 if (ret < 0)
375 return ret;
376
377 if (request_ops->parse_request) {
378 ret = request_ops->parse_request(req_info, tb, info->extack);
379 if (ret < 0)
380 return ret;
381 }
382
383 return 0;
384 }
385
386 /**
387 * ethnl_init_reply_data() - Initialize reply data for GET request
388 * @reply_data: pointer to embedded struct ethnl_reply_data
389 * @ops: instance of struct ethnl_request_ops describing the layout
390 * @dev: network device to initialize the reply for
391 *
392 * Fills the reply data part with zeros and sets the dev member. Must be called
393 * before calling the ->fill_reply() callback (for each iteration when handling
394 * dump requests).
395 */
396 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data,
397 const struct ethnl_request_ops *ops,
398 struct net_device *dev)
399 {
400 memset(reply_data, 0, ops->reply_data_size);
401 reply_data->dev = dev;
402 }
403
404 /* default ->doit() handler for GET type requests */
405 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info)
406 {
407 struct ethnl_reply_data *reply_data = NULL;
408 struct ethnl_req_info *req_info = NULL;
409 const u8 cmd = info->genlhdr->cmd;
410 const struct ethnl_request_ops *ops;
411 int hdr_len, reply_len;
412 struct sk_buff *rskb;
413 void *reply_payload;
414 int ret;
415
416 ops = ethnl_default_requests[cmd];
417 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd))
418 return -EOPNOTSUPP;
419 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr))
420 return -EINVAL;
421
422 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
423 if (!req_info)
424 return -ENOMEM;
425 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
426 if (!reply_data) {
427 kfree(req_info);
428 return -ENOMEM;
429 }
430
431 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do);
432 if (ret < 0)
433 goto err_dev;
434 ethnl_init_reply_data(reply_data, ops, req_info->dev);
435
436 rtnl_lock();
437 ret = ops->prepare_data(req_info, reply_data, info);
438 rtnl_unlock();
439 if (ret < 0)
440 goto err_cleanup;
441 ret = ops->reply_size(req_info, reply_data);
442 if (ret < 0)
443 goto err_cleanup;
444 reply_len = ret;
445 ret = -ENOMEM;
446 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(),
447 req_info->dev, ops->reply_cmd,
448 ops->hdr_attr, info, &reply_payload);
449 if (!rskb)
450 goto err_cleanup;
451 hdr_len = rskb->len;
452 ret = ops->fill_reply(rskb, req_info, reply_data);
453 if (ret < 0)
454 goto err_msg;
455 WARN_ONCE(rskb->len - hdr_len > reply_len,
456 "ethnl cmd %d: calculated reply length %d, but consumed %d\n",
457 cmd, reply_len, rskb->len - hdr_len);
458 if (ops->cleanup_data)
459 ops->cleanup_data(reply_data);
460
461 genlmsg_end(rskb, reply_payload);
462 netdev_put(req_info->dev, &req_info->dev_tracker);
463 kfree(reply_data);
464 kfree(req_info);
465 return genlmsg_reply(rskb, info);
466
467 err_msg:
468 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len);
469 nlmsg_free(rskb);
470 err_cleanup:
471 if (ops->cleanup_data)
472 ops->cleanup_data(reply_data);
473 err_dev:
474 netdev_put(req_info->dev, &req_info->dev_tracker);
475 kfree(reply_data);
476 kfree(req_info);
477 return ret;
478 }
479
480 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev,
481 const struct ethnl_dump_ctx *ctx,
482 const struct genl_info *info)
483 {
484 void *ehdr;
485 int ret;
486
487 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
488 ðtool_genl_family, NLM_F_MULTI,
489 ctx->ops->reply_cmd);
490 if (!ehdr)
491 return -EMSGSIZE;
492
493 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev);
494 rtnl_lock();
495 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info);
496 rtnl_unlock();
497 if (ret < 0)
498 goto out;
499 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr);
500 if (ret < 0)
501 goto out;
502 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data);
503
504 out:
505 if (ctx->ops->cleanup_data)
506 ctx->ops->cleanup_data(ctx->reply_data);
507 ctx->reply_data->dev = NULL;
508 if (ret < 0)
509 genlmsg_cancel(skb, ehdr);
510 else
511 genlmsg_end(skb, ehdr);
512 return ret;
513 }
514
515 /* Default ->dumpit() handler for GET requests. */
516 static int ethnl_default_dumpit(struct sk_buff *skb,
517 struct netlink_callback *cb)
518 {
519 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
520 struct net *net = sock_net(skb->sk);
521 struct net_device *dev;
522 int ret = 0;
523
524 rcu_read_lock();
525 for_each_netdev_dump(net, dev, ctx->pos_ifindex) {
526 dev_hold(dev);
527 rcu_read_unlock();
528
529 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb));
530
531 rcu_read_lock();
532 dev_put(dev);
533
534 if (ret < 0 && ret != -EOPNOTSUPP) {
535 if (likely(skb->len))
536 ret = skb->len;
537 break;
538 }
539 ret = 0;
540 }
541 rcu_read_unlock();
542
543 return ret;
544 }
545
546 /* generic ->start() handler for GET requests */
547 static int ethnl_default_start(struct netlink_callback *cb)
548 {
549 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
550 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
551 struct ethnl_reply_data *reply_data;
552 const struct ethnl_request_ops *ops;
553 struct ethnl_req_info *req_info;
554 struct genlmsghdr *ghdr;
555 int ret;
556
557 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
558
559 ghdr = nlmsg_data(cb->nlh);
560 ops = ethnl_default_requests[ghdr->cmd];
561 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd))
562 return -EOPNOTSUPP;
563 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
564 if (!req_info)
565 return -ENOMEM;
566 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
567 if (!reply_data) {
568 ret = -ENOMEM;
569 goto free_req_info;
570 }
571
572 ret = ethnl_default_parse(req_info, &info->info, ops, false);
573 if (req_info->dev) {
574 /* We ignore device specification in dump requests but as the
575 * same parser as for non-dump (doit) requests is used, it
576 * would take reference to the device if it finds one
577 */
578 netdev_put(req_info->dev, &req_info->dev_tracker);
579 req_info->dev = NULL;
580 }
581 if (ret < 0)
582 goto free_reply_data;
583
584 ctx->ops = ops;
585 ctx->req_info = req_info;
586 ctx->reply_data = reply_data;
587 ctx->pos_ifindex = 0;
588
589 return 0;
590
591 free_reply_data:
592 kfree(reply_data);
593 free_req_info:
594 kfree(req_info);
595
596 return ret;
597 }
598
599 /* default ->done() handler for GET requests */
600 static int ethnl_default_done(struct netlink_callback *cb)
601 {
602 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
603
604 kfree(ctx->reply_data);
605 kfree(ctx->req_info);
606
607 return 0;
608 }
609
610 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info)
611 {
612 const struct ethnl_request_ops *ops;
613 struct ethnl_req_info req_info = {};
614 const u8 cmd = info->genlhdr->cmd;
615 int ret;
616
617 ops = ethnl_default_requests[cmd];
618 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd))
619 return -EOPNOTSUPP;
620 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr))
621 return -EINVAL;
622
623 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr],
624 genl_info_net(info), info->extack,
625 true);
626 if (ret < 0)
627 return ret;
628
629 if (ops->set_validate) {
630 ret = ops->set_validate(&req_info, info);
631 /* 0 means nothing to do */
632 if (ret <= 0)
633 goto out_dev;
634 }
635
636 rtnl_lock();
637 ret = ethnl_ops_begin(req_info.dev);
638 if (ret < 0)
639 goto out_rtnl;
640
641 ret = ops->set(&req_info, info);
642 if (ret <= 0)
643 goto out_ops;
644 ethtool_notify(req_info.dev, ops->set_ntf_cmd, NULL);
645
646 ret = 0;
647 out_ops:
648 ethnl_ops_complete(req_info.dev);
649 out_rtnl:
650 rtnl_unlock();
651 out_dev:
652 ethnl_parse_header_dev_put(&req_info);
653 return ret;
654 }
655
656 static const struct ethnl_request_ops *
657 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = {
658 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops,
659 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops,
660 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops,
661 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops,
662 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops,
663 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops,
664 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops,
665 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops,
666 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops,
667 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops,
668 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops,
669 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops,
670 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops,
671 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops,
672 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops,
673 };
674
675 /* default notification handler */
676 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd,
677 const void *data)
678 {
679 struct ethnl_reply_data *reply_data;
680 const struct ethnl_request_ops *ops;
681 struct ethnl_req_info *req_info;
682 struct genl_info info;
683 struct sk_buff *skb;
684 void *reply_payload;
685 int reply_len;
686 int ret;
687
688 genl_info_init_ntf(&info, ðtool_genl_family, cmd);
689
690 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX ||
691 !ethnl_default_notify_ops[cmd],
692 "unexpected notification type %u\n", cmd))
693 return;
694 ops = ethnl_default_notify_ops[cmd];
695 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
696 if (!req_info)
697 return;
698 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
699 if (!reply_data) {
700 kfree(req_info);
701 return;
702 }
703
704 req_info->dev = dev;
705 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS;
706
707 ethnl_init_reply_data(reply_data, ops, dev);
708 ret = ops->prepare_data(req_info, reply_data, &info);
709 if (ret < 0)
710 goto err_cleanup;
711 ret = ops->reply_size(req_info, reply_data);
712 if (ret < 0)
713 goto err_cleanup;
714 reply_len = ret + ethnl_reply_header_size();
715 skb = genlmsg_new(reply_len, GFP_KERNEL);
716 if (!skb)
717 goto err_cleanup;
718 reply_payload = ethnl_bcastmsg_put(skb, cmd);
719 if (!reply_payload)
720 goto err_skb;
721 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr);
722 if (ret < 0)
723 goto err_msg;
724 ret = ops->fill_reply(skb, req_info, reply_data);
725 if (ret < 0)
726 goto err_msg;
727 if (ops->cleanup_data)
728 ops->cleanup_data(reply_data);
729
730 genlmsg_end(skb, reply_payload);
731 kfree(reply_data);
732 kfree(req_info);
733 ethnl_multicast(skb, dev);
734 return;
735
736 err_msg:
737 WARN_ONCE(ret == -EMSGSIZE,
738 "calculated message payload length (%d) not sufficient\n",
739 reply_len);
740 err_skb:
741 nlmsg_free(skb);
742 err_cleanup:
743 if (ops->cleanup_data)
744 ops->cleanup_data(reply_data);
745 kfree(reply_data);
746 kfree(req_info);
747 return;
748 }
749
750 /* notifications */
751
752 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd,
753 const void *data);
754
755 static const ethnl_notify_handler_t ethnl_notify_handlers[] = {
756 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify,
757 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify,
758 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify,
759 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify,
760 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify,
761 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify,
762 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify,
763 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify,
764 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify,
765 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify,
766 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify,
767 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify,
768 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify,
769 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify,
770 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify,
771 };
772
773 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)
774 {
775 if (unlikely(!ethnl_ok))
776 return;
777 ASSERT_RTNL();
778
779 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) &&
780 ethnl_notify_handlers[cmd]))
781 ethnl_notify_handlers[cmd](dev, cmd, data);
782 else
783 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n",
784 cmd, netdev_name(dev));
785 }
786 EXPORT_SYMBOL(ethtool_notify);
787
788 static void ethnl_notify_features(struct netdev_notifier_info *info)
789 {
790 struct net_device *dev = netdev_notifier_info_to_dev(info);
791
792 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL);
793 }
794
795 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event,
796 void *ptr)
797 {
798 struct netdev_notifier_info *info = ptr;
799 struct netlink_ext_ack *extack;
800 struct net_device *dev;
801
802 dev = netdev_notifier_info_to_dev(info);
803 extack = netdev_notifier_info_to_extack(info);
804
805 switch (event) {
806 case NETDEV_FEAT_CHANGE:
807 ethnl_notify_features(ptr);
808 break;
809 case NETDEV_PRE_UP:
810 if (dev->ethtool->module_fw_flash_in_progress) {
811 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware");
812 return NOTIFY_BAD;
813 }
814 }
815
816 return NOTIFY_DONE;
817 }
818
819 static struct notifier_block ethnl_netdev_notifier = {
820 .notifier_call = ethnl_netdev_event,
821 };
822
823 /* genetlink setup */
824
825 static const struct genl_ops ethtool_genl_ops[] = {
826 {
827 .cmd = ETHTOOL_MSG_STRSET_GET,
828 .doit = ethnl_default_doit,
829 .start = ethnl_default_start,
830 .dumpit = ethnl_default_dumpit,
831 .done = ethnl_default_done,
832 .policy = ethnl_strset_get_policy,
833 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1,
834 },
835 {
836 .cmd = ETHTOOL_MSG_LINKINFO_GET,
837 .doit = ethnl_default_doit,
838 .start = ethnl_default_start,
839 .dumpit = ethnl_default_dumpit,
840 .done = ethnl_default_done,
841 .policy = ethnl_linkinfo_get_policy,
842 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1,
843 },
844 {
845 .cmd = ETHTOOL_MSG_LINKINFO_SET,
846 .flags = GENL_UNS_ADMIN_PERM,
847 .doit = ethnl_default_set_doit,
848 .policy = ethnl_linkinfo_set_policy,
849 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1,
850 },
851 {
852 .cmd = ETHTOOL_MSG_LINKMODES_GET,
853 .doit = ethnl_default_doit,
854 .start = ethnl_default_start,
855 .dumpit = ethnl_default_dumpit,
856 .done = ethnl_default_done,
857 .policy = ethnl_linkmodes_get_policy,
858 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1,
859 },
860 {
861 .cmd = ETHTOOL_MSG_LINKMODES_SET,
862 .flags = GENL_UNS_ADMIN_PERM,
863 .doit = ethnl_default_set_doit,
864 .policy = ethnl_linkmodes_set_policy,
865 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1,
866 },
867 {
868 .cmd = ETHTOOL_MSG_LINKSTATE_GET,
869 .doit = ethnl_default_doit,
870 .start = ethnl_default_start,
871 .dumpit = ethnl_default_dumpit,
872 .done = ethnl_default_done,
873 .policy = ethnl_linkstate_get_policy,
874 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1,
875 },
876 {
877 .cmd = ETHTOOL_MSG_DEBUG_GET,
878 .doit = ethnl_default_doit,
879 .start = ethnl_default_start,
880 .dumpit = ethnl_default_dumpit,
881 .done = ethnl_default_done,
882 .policy = ethnl_debug_get_policy,
883 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1,
884 },
885 {
886 .cmd = ETHTOOL_MSG_DEBUG_SET,
887 .flags = GENL_UNS_ADMIN_PERM,
888 .doit = ethnl_default_set_doit,
889 .policy = ethnl_debug_set_policy,
890 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1,
891 },
892 {
893 .cmd = ETHTOOL_MSG_WOL_GET,
894 .flags = GENL_UNS_ADMIN_PERM,
895 .doit = ethnl_default_doit,
896 .start = ethnl_default_start,
897 .dumpit = ethnl_default_dumpit,
898 .done = ethnl_default_done,
899 .policy = ethnl_wol_get_policy,
900 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1,
901 },
902 {
903 .cmd = ETHTOOL_MSG_WOL_SET,
904 .flags = GENL_UNS_ADMIN_PERM,
905 .doit = ethnl_default_set_doit,
906 .policy = ethnl_wol_set_policy,
907 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1,
908 },
909 {
910 .cmd = ETHTOOL_MSG_FEATURES_GET,
911 .doit = ethnl_default_doit,
912 .start = ethnl_default_start,
913 .dumpit = ethnl_default_dumpit,
914 .done = ethnl_default_done,
915 .policy = ethnl_features_get_policy,
916 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1,
917 },
918 {
919 .cmd = ETHTOOL_MSG_FEATURES_SET,
920 .flags = GENL_UNS_ADMIN_PERM,
921 .doit = ethnl_set_features,
922 .policy = ethnl_features_set_policy,
923 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1,
924 },
925 {
926 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET,
927 .doit = ethnl_default_doit,
928 .start = ethnl_default_start,
929 .dumpit = ethnl_default_dumpit,
930 .done = ethnl_default_done,
931 .policy = ethnl_privflags_get_policy,
932 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1,
933 },
934 {
935 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET,
936 .flags = GENL_UNS_ADMIN_PERM,
937 .doit = ethnl_default_set_doit,
938 .policy = ethnl_privflags_set_policy,
939 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1,
940 },
941 {
942 .cmd = ETHTOOL_MSG_RINGS_GET,
943 .doit = ethnl_default_doit,
944 .start = ethnl_default_start,
945 .dumpit = ethnl_default_dumpit,
946 .done = ethnl_default_done,
947 .policy = ethnl_rings_get_policy,
948 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1,
949 },
950 {
951 .cmd = ETHTOOL_MSG_RINGS_SET,
952 .flags = GENL_UNS_ADMIN_PERM,
953 .doit = ethnl_default_set_doit,
954 .policy = ethnl_rings_set_policy,
955 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1,
956 },
957 {
958 .cmd = ETHTOOL_MSG_CHANNELS_GET,
959 .doit = ethnl_default_doit,
960 .start = ethnl_default_start,
961 .dumpit = ethnl_default_dumpit,
962 .done = ethnl_default_done,
963 .policy = ethnl_channels_get_policy,
964 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1,
965 },
966 {
967 .cmd = ETHTOOL_MSG_CHANNELS_SET,
968 .flags = GENL_UNS_ADMIN_PERM,
969 .doit = ethnl_default_set_doit,
970 .policy = ethnl_channels_set_policy,
971 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1,
972 },
973 {
974 .cmd = ETHTOOL_MSG_COALESCE_GET,
975 .doit = ethnl_default_doit,
976 .start = ethnl_default_start,
977 .dumpit = ethnl_default_dumpit,
978 .done = ethnl_default_done,
979 .policy = ethnl_coalesce_get_policy,
980 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1,
981 },
982 {
983 .cmd = ETHTOOL_MSG_COALESCE_SET,
984 .flags = GENL_UNS_ADMIN_PERM,
985 .doit = ethnl_default_set_doit,
986 .policy = ethnl_coalesce_set_policy,
987 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1,
988 },
989 {
990 .cmd = ETHTOOL_MSG_PAUSE_GET,
991 .doit = ethnl_default_doit,
992 .start = ethnl_default_start,
993 .dumpit = ethnl_default_dumpit,
994 .done = ethnl_default_done,
995 .policy = ethnl_pause_get_policy,
996 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1,
997 },
998 {
999 .cmd = ETHTOOL_MSG_PAUSE_SET,
1000 .flags = GENL_UNS_ADMIN_PERM,
1001 .doit = ethnl_default_set_doit,
1002 .policy = ethnl_pause_set_policy,
1003 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1,
1004 },
1005 {
1006 .cmd = ETHTOOL_MSG_EEE_GET,
1007 .doit = ethnl_default_doit,
1008 .start = ethnl_default_start,
1009 .dumpit = ethnl_default_dumpit,
1010 .done = ethnl_default_done,
1011 .policy = ethnl_eee_get_policy,
1012 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1,
1013 },
1014 {
1015 .cmd = ETHTOOL_MSG_EEE_SET,
1016 .flags = GENL_UNS_ADMIN_PERM,
1017 .doit = ethnl_default_set_doit,
1018 .policy = ethnl_eee_set_policy,
1019 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1,
1020 },
1021 {
1022 .cmd = ETHTOOL_MSG_TSINFO_GET,
1023 .doit = ethnl_default_doit,
1024 .start = ethnl_default_start,
1025 .dumpit = ethnl_default_dumpit,
1026 .done = ethnl_default_done,
1027 .policy = ethnl_tsinfo_get_policy,
1028 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1,
1029 },
1030 {
1031 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT,
1032 .flags = GENL_UNS_ADMIN_PERM,
1033 .doit = ethnl_act_cable_test,
1034 .policy = ethnl_cable_test_act_policy,
1035 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1,
1036 },
1037 {
1038 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT,
1039 .flags = GENL_UNS_ADMIN_PERM,
1040 .doit = ethnl_act_cable_test_tdr,
1041 .policy = ethnl_cable_test_tdr_act_policy,
1042 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1,
1043 },
1044 {
1045 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET,
1046 .doit = ethnl_tunnel_info_doit,
1047 .start = ethnl_tunnel_info_start,
1048 .dumpit = ethnl_tunnel_info_dumpit,
1049 .policy = ethnl_tunnel_info_get_policy,
1050 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1,
1051 },
1052 {
1053 .cmd = ETHTOOL_MSG_FEC_GET,
1054 .doit = ethnl_default_doit,
1055 .start = ethnl_default_start,
1056 .dumpit = ethnl_default_dumpit,
1057 .done = ethnl_default_done,
1058 .policy = ethnl_fec_get_policy,
1059 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1,
1060 },
1061 {
1062 .cmd = ETHTOOL_MSG_FEC_SET,
1063 .flags = GENL_UNS_ADMIN_PERM,
1064 .doit = ethnl_default_set_doit,
1065 .policy = ethnl_fec_set_policy,
1066 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1,
1067 },
1068 {
1069 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET,
1070 .flags = GENL_UNS_ADMIN_PERM,
1071 .doit = ethnl_default_doit,
1072 .start = ethnl_default_start,
1073 .dumpit = ethnl_default_dumpit,
1074 .done = ethnl_default_done,
1075 .policy = ethnl_module_eeprom_get_policy,
1076 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1,
1077 },
1078 {
1079 .cmd = ETHTOOL_MSG_STATS_GET,
1080 .doit = ethnl_default_doit,
1081 .start = ethnl_default_start,
1082 .dumpit = ethnl_default_dumpit,
1083 .done = ethnl_default_done,
1084 .policy = ethnl_stats_get_policy,
1085 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1,
1086 },
1087 {
1088 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET,
1089 .doit = ethnl_default_doit,
1090 .start = ethnl_default_start,
1091 .dumpit = ethnl_default_dumpit,
1092 .done = ethnl_default_done,
1093 .policy = ethnl_phc_vclocks_get_policy,
1094 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1,
1095 },
1096 {
1097 .cmd = ETHTOOL_MSG_MODULE_GET,
1098 .doit = ethnl_default_doit,
1099 .start = ethnl_default_start,
1100 .dumpit = ethnl_default_dumpit,
1101 .done = ethnl_default_done,
1102 .policy = ethnl_module_get_policy,
1103 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1,
1104 },
1105 {
1106 .cmd = ETHTOOL_MSG_MODULE_SET,
1107 .flags = GENL_UNS_ADMIN_PERM,
1108 .doit = ethnl_default_set_doit,
1109 .policy = ethnl_module_set_policy,
1110 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1,
1111 },
1112 {
1113 .cmd = ETHTOOL_MSG_PSE_GET,
1114 .doit = ethnl_default_doit,
1115 .start = ethnl_default_start,
1116 .dumpit = ethnl_default_dumpit,
1117 .done = ethnl_default_done,
1118 .policy = ethnl_pse_get_policy,
1119 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1,
1120 },
1121 {
1122 .cmd = ETHTOOL_MSG_PSE_SET,
1123 .flags = GENL_UNS_ADMIN_PERM,
1124 .doit = ethnl_default_set_doit,
1125 .policy = ethnl_pse_set_policy,
1126 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1,
1127 },
1128 {
1129 .cmd = ETHTOOL_MSG_RSS_GET,
1130 .doit = ethnl_default_doit,
1131 .policy = ethnl_rss_get_policy,
1132 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1,
1133 },
1134 {
1135 .cmd = ETHTOOL_MSG_PLCA_GET_CFG,
1136 .doit = ethnl_default_doit,
1137 .start = ethnl_default_start,
1138 .dumpit = ethnl_default_dumpit,
1139 .done = ethnl_default_done,
1140 .policy = ethnl_plca_get_cfg_policy,
1141 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1,
1142 },
1143 {
1144 .cmd = ETHTOOL_MSG_PLCA_SET_CFG,
1145 .flags = GENL_UNS_ADMIN_PERM,
1146 .doit = ethnl_default_set_doit,
1147 .policy = ethnl_plca_set_cfg_policy,
1148 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1,
1149 },
1150 {
1151 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS,
1152 .doit = ethnl_default_doit,
1153 .start = ethnl_default_start,
1154 .dumpit = ethnl_default_dumpit,
1155 .done = ethnl_default_done,
1156 .policy = ethnl_plca_get_status_policy,
1157 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1,
1158 },
1159 {
1160 .cmd = ETHTOOL_MSG_MM_GET,
1161 .doit = ethnl_default_doit,
1162 .start = ethnl_default_start,
1163 .dumpit = ethnl_default_dumpit,
1164 .done = ethnl_default_done,
1165 .policy = ethnl_mm_get_policy,
1166 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1,
1167 },
1168 {
1169 .cmd = ETHTOOL_MSG_MM_SET,
1170 .flags = GENL_UNS_ADMIN_PERM,
1171 .doit = ethnl_default_set_doit,
1172 .policy = ethnl_mm_set_policy,
1173 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1,
1174 },
1175 {
1176 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT,
1177 .flags = GENL_UNS_ADMIN_PERM,
1178 .doit = ethnl_act_module_fw_flash,
1179 .policy = ethnl_module_fw_flash_act_policy,
1180 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1,
1181 },
1182 };
1183
1184 static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
1185 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME },
1186 };
1187
1188 static struct genl_family ethtool_genl_family __ro_after_init = {
1189 .name = ETHTOOL_GENL_NAME,
1190 .version = ETHTOOL_GENL_VERSION,
1191 .netnsok = true,
1192 .parallel_ops = true,
1193 .ops = ethtool_genl_ops,
1194 .n_ops = ARRAY_SIZE(ethtool_genl_ops),
1195 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1,
1196 .mcgrps = ethtool_nl_mcgrps,
1197 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps),
1198 .sock_priv_size = sizeof(struct ethnl_sock_priv),
1199 .sock_priv_destroy = ethnl_sock_priv_destroy,
1200 };
1201
1202 /* module setup */
1203
1204 static int __init ethnl_init(void)
1205 {
1206 int ret;
1207
1208 ret = genl_register_family(ðtool_genl_family);
1209 if (WARN(ret < 0, "ethtool: genetlink family registration failed"))
1210 return ret;
1211 ethnl_ok = true;
1212
1213 ret = register_netdevice_notifier(ðnl_netdev_notifier);
1214 WARN(ret < 0, "ethtool: net device notifier registration failed");
1215 return ret;
1216 }
1217
1218 subsys_initcall(ethnl_init);
1219
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