1 // SPDX-License-Identifier: GPL-2.0-only
4 #include <linux/ethtool_netlink.h>
7 static struct genl_family ethtool_genl_family;
9 static bool ethnl_ok __read_mostly;
10 static u32 ethnl_bcast_seq;
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)
16 const struct nla_policy ethnl_header_policy[] = {
17 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 },
18 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING,
19 .len = ALTIFNAMSIZ - 1 },
20 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32,
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,
33 * ethnl_parse_header_dev_get() - parse request header
34 * @req_info: structure to put results into
35 * @header: nest attribute with request header
37 * @extack: netlink extack for error reporting
38 * @require_dev: fail if no device identified in header
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
46 * Return: 0 on success or negative error code
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)
52 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)];
53 const struct nlattr *devname_attr;
54 struct net_device *dev = NULL;
59 NL_SET_ERR_MSG(extack, "request header missing");
62 /* No validation here, command policy should have a nested policy set
63 * for the header, therefore validation should have already been done.
65 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header,
69 if (tb[ETHTOOL_A_HEADER_FLAGS])
70 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]);
72 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME];
73 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) {
74 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]);
76 dev = dev_get_by_index(net, ifindex);
78 NL_SET_ERR_MSG_ATTR(extack,
79 tb[ETHTOOL_A_HEADER_DEV_INDEX],
80 "no device matches ifindex");
83 /* if both ifindex and ifname are passed, they must match */
85 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) {
87 NL_SET_ERR_MSG_ATTR(extack, header,
88 "ifindex and name do not match");
91 } else if (devname_attr) {
92 dev = dev_get_by_name(net, nla_data(devname_attr));
94 NL_SET_ERR_MSG_ATTR(extack, devname_attr,
95 "no device matches name");
98 } else if (require_dev) {
99 NL_SET_ERR_MSG_ATTR(extack, header,
100 "neither ifindex nor name specified");
104 if (dev && !netif_device_present(dev)) {
106 NL_SET_ERR_MSG(extack, "device not present");
111 req_info->flags = flags;
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
121 * Create a nested attribute with attributes describing given network device.
123 * Return: 0 on success, error value (-EMSGSIZE only) on error
125 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev,
132 nest = nla_nest_start(skb, attrtype);
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.
143 nla_nest_end(skb, nest);
147 nla_nest_cancel(skb, nest);
152 * ethnl_reply_init() - Create skb for a reply and fill device identification
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()
160 * Return: pointer to allocated skb on success, NULL on error
162 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd,
163 u16 hdr_attrtype, struct genl_info *info,
168 skb = genlmsg_new(payload, GFP_KERNEL);
171 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd);
178 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype);
188 GENL_SET_ERR_MSG(info, "failed to setup reply message");
192 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd)
194 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
195 ðtool_genl_family, 0, cmd);
198 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd)
200 return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0,
204 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev)
206 return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb,
207 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL);
210 /* GET request helpers */
213 * struct ethnl_dump_ctx - context structure for generic dumpit() callback
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
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().
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;
232 static const struct ethnl_request_ops *
233 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
234 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops,
235 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops,
236 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops,
237 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops,
238 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops,
239 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops,
240 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops,
241 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops,
242 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops,
243 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops,
244 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops,
245 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops,
246 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops,
247 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops,
248 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops,
249 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops,
250 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops,
253 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb)
255 return (struct ethnl_dump_ctx *)cb->ctx;
259 * ethnl_default_parse() - Parse request message
260 * @req_info: pointer to structure to put data into
261 * @tb: parsed attributes
262 * @net: request netns
263 * @request_ops: struct request_ops for request type
264 * @extack: netlink extack for error reporting
265 * @require_dev: fail if no device identified in header
267 * Parse universal request header and call request specific ->parse_request()
268 * callback (if defined) to parse the rest of the message.
270 * Return: 0 on success or negative error code
272 static int ethnl_default_parse(struct ethnl_req_info *req_info,
273 struct nlattr **tb, struct net *net,
274 const struct ethnl_request_ops *request_ops,
275 struct netlink_ext_ack *extack, bool require_dev)
279 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr],
280 net, extack, require_dev);
284 if (request_ops->parse_request) {
285 ret = request_ops->parse_request(req_info, tb, extack);
294 * ethnl_init_reply_data() - Initialize reply data for GET request
295 * @reply_data: pointer to embedded struct ethnl_reply_data
296 * @ops: instance of struct ethnl_request_ops describing the layout
297 * @dev: network device to initialize the reply for
299 * Fills the reply data part with zeros and sets the dev member. Must be called
300 * before calling the ->fill_reply() callback (for each iteration when handling
303 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data,
304 const struct ethnl_request_ops *ops,
305 struct net_device *dev)
307 memset(reply_data, 0, ops->reply_data_size);
308 reply_data->dev = dev;
311 /* default ->doit() handler for GET type requests */
312 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info)
314 struct ethnl_reply_data *reply_data = NULL;
315 struct ethnl_req_info *req_info = NULL;
316 const u8 cmd = info->genlhdr->cmd;
317 const struct ethnl_request_ops *ops;
318 struct sk_buff *rskb;
323 ops = ethnl_default_requests[cmd];
324 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd))
326 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
329 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
335 ret = ethnl_default_parse(req_info, info->attrs, genl_info_net(info),
336 ops, info->extack, !ops->allow_nodev_do);
339 ethnl_init_reply_data(reply_data, ops, req_info->dev);
342 ret = ops->prepare_data(req_info, reply_data, info);
346 ret = ops->reply_size(req_info, reply_data);
349 reply_len = ret + ethnl_reply_header_size();
351 rskb = ethnl_reply_init(reply_len, req_info->dev, ops->reply_cmd,
352 ops->hdr_attr, info, &reply_payload);
355 ret = ops->fill_reply(rskb, req_info, reply_data);
358 if (ops->cleanup_data)
359 ops->cleanup_data(reply_data);
361 genlmsg_end(rskb, reply_payload);
363 dev_put(req_info->dev);
366 return genlmsg_reply(rskb, info);
369 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len);
372 if (ops->cleanup_data)
373 ops->cleanup_data(reply_data);
376 dev_put(req_info->dev);
382 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev,
383 const struct ethnl_dump_ctx *ctx,
384 struct netlink_callback *cb)
389 ehdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
390 ðtool_genl_family, NLM_F_MULTI,
391 ctx->ops->reply_cmd);
395 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev);
397 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, NULL);
401 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr);
404 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data);
407 if (ctx->ops->cleanup_data)
408 ctx->ops->cleanup_data(ctx->reply_data);
409 ctx->reply_data->dev = NULL;
411 genlmsg_cancel(skb, ehdr);
413 genlmsg_end(skb, ehdr);
417 /* Default ->dumpit() handler for GET requests. Device iteration copied from
418 * rtnl_dump_ifinfo(); we have to be more careful about device hashtable
419 * persistence as we cannot guarantee to hold RTNL lock through the whole
420 * function as rtnetnlink does.
422 static int ethnl_default_dumpit(struct sk_buff *skb,
423 struct netlink_callback *cb)
425 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
426 struct net *net = sock_net(skb->sk);
427 int s_idx = ctx->pos_idx;
432 for (h = ctx->pos_hash; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
433 struct hlist_head *head;
434 struct net_device *dev;
437 head = &net->dev_index_head[h];
440 seq = net->dev_base_seq;
443 hlist_for_each_entry(dev, head, index_hlist) {
449 ret = ethnl_default_dump_one(skb, dev, ctx, cb);
452 if (ret == -EOPNOTSUPP)
454 if (likely(skb->len))
460 if (net->dev_base_seq != seq) {
474 nl_dump_check_consistent(cb, nlmsg_hdr(skb));
479 /* generic ->start() handler for GET requests */
480 static int ethnl_default_start(struct netlink_callback *cb)
482 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
483 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
484 struct ethnl_reply_data *reply_data;
485 const struct ethnl_request_ops *ops;
486 struct ethnl_req_info *req_info;
487 struct genlmsghdr *ghdr;
490 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
492 ghdr = nlmsg_data(cb->nlh);
493 ops = ethnl_default_requests[ghdr->cmd];
494 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd))
496 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
499 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
505 ret = ethnl_default_parse(req_info, info->attrs, sock_net(cb->skb->sk),
506 ops, cb->extack, false);
508 /* We ignore device specification in dump requests but as the
509 * same parser as for non-dump (doit) requests is used, it
510 * would take reference to the device if it finds one
512 dev_put(req_info->dev);
513 req_info->dev = NULL;
516 goto free_reply_data;
519 ctx->req_info = req_info;
520 ctx->reply_data = reply_data;
534 /* default ->done() handler for GET requests */
535 static int ethnl_default_done(struct netlink_callback *cb)
537 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb);
539 kfree(ctx->reply_data);
540 kfree(ctx->req_info);
545 static const struct ethnl_request_ops *
546 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = {
547 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops,
548 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops,
549 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops,
550 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops,
551 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops,
552 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops,
553 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops,
554 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops,
555 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops,
556 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops,
557 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops,
558 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops,
561 /* default notification handler */
562 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd,
565 struct ethnl_reply_data *reply_data;
566 const struct ethnl_request_ops *ops;
567 struct ethnl_req_info *req_info;
573 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX ||
574 !ethnl_default_notify_ops[cmd],
575 "unexpected notification type %u\n", cmd))
577 ops = ethnl_default_notify_ops[cmd];
578 req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
581 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL);
588 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS;
590 ethnl_init_reply_data(reply_data, ops, dev);
591 ret = ops->prepare_data(req_info, reply_data, NULL);
594 ret = ops->reply_size(req_info, reply_data);
597 reply_len = ret + ethnl_reply_header_size();
599 skb = genlmsg_new(reply_len, GFP_KERNEL);
602 reply_payload = ethnl_bcastmsg_put(skb, cmd);
605 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr);
608 ret = ops->fill_reply(skb, req_info, reply_data);
611 if (ops->cleanup_data)
612 ops->cleanup_data(reply_data);
614 genlmsg_end(skb, reply_payload);
617 ethnl_multicast(skb, dev);
621 WARN_ONCE(ret == -EMSGSIZE,
622 "calculated message payload length (%d) not sufficient\n",
627 if (ops->cleanup_data)
628 ops->cleanup_data(reply_data);
636 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd,
639 static const ethnl_notify_handler_t ethnl_notify_handlers[] = {
640 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify,
641 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify,
642 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify,
643 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify,
644 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify,
645 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify,
646 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify,
647 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify,
648 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify,
649 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify,
650 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify,
651 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify,
654 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)
656 if (unlikely(!ethnl_ok))
660 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) &&
661 ethnl_notify_handlers[cmd]))
662 ethnl_notify_handlers[cmd](dev, cmd, data);
664 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n",
665 cmd, netdev_name(dev));
667 EXPORT_SYMBOL(ethtool_notify);
669 static void ethnl_notify_features(struct netdev_notifier_info *info)
671 struct net_device *dev = netdev_notifier_info_to_dev(info);
673 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL);
676 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event,
680 case NETDEV_FEAT_CHANGE:
681 ethnl_notify_features(ptr);
688 static struct notifier_block ethnl_netdev_notifier = {
689 .notifier_call = ethnl_netdev_event,
692 /* genetlink setup */
694 static const struct genl_ops ethtool_genl_ops[] = {
696 .cmd = ETHTOOL_MSG_STRSET_GET,
697 .doit = ethnl_default_doit,
698 .start = ethnl_default_start,
699 .dumpit = ethnl_default_dumpit,
700 .done = ethnl_default_done,
701 .policy = ethnl_strset_get_policy,
702 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1,
705 .cmd = ETHTOOL_MSG_LINKINFO_GET,
706 .doit = ethnl_default_doit,
707 .start = ethnl_default_start,
708 .dumpit = ethnl_default_dumpit,
709 .done = ethnl_default_done,
710 .policy = ethnl_linkinfo_get_policy,
711 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1,
714 .cmd = ETHTOOL_MSG_LINKINFO_SET,
715 .flags = GENL_UNS_ADMIN_PERM,
716 .doit = ethnl_set_linkinfo,
717 .policy = ethnl_linkinfo_set_policy,
718 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1,
721 .cmd = ETHTOOL_MSG_LINKMODES_GET,
722 .doit = ethnl_default_doit,
723 .start = ethnl_default_start,
724 .dumpit = ethnl_default_dumpit,
725 .done = ethnl_default_done,
726 .policy = ethnl_linkmodes_get_policy,
727 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1,
730 .cmd = ETHTOOL_MSG_LINKMODES_SET,
731 .flags = GENL_UNS_ADMIN_PERM,
732 .doit = ethnl_set_linkmodes,
733 .policy = ethnl_linkmodes_set_policy,
734 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1,
737 .cmd = ETHTOOL_MSG_LINKSTATE_GET,
738 .doit = ethnl_default_doit,
739 .start = ethnl_default_start,
740 .dumpit = ethnl_default_dumpit,
741 .done = ethnl_default_done,
742 .policy = ethnl_linkstate_get_policy,
743 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1,
746 .cmd = ETHTOOL_MSG_DEBUG_GET,
747 .doit = ethnl_default_doit,
748 .start = ethnl_default_start,
749 .dumpit = ethnl_default_dumpit,
750 .done = ethnl_default_done,
751 .policy = ethnl_debug_get_policy,
752 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1,
755 .cmd = ETHTOOL_MSG_DEBUG_SET,
756 .flags = GENL_UNS_ADMIN_PERM,
757 .doit = ethnl_set_debug,
758 .policy = ethnl_debug_set_policy,
759 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1,
762 .cmd = ETHTOOL_MSG_WOL_GET,
763 .flags = GENL_UNS_ADMIN_PERM,
764 .doit = ethnl_default_doit,
765 .start = ethnl_default_start,
766 .dumpit = ethnl_default_dumpit,
767 .done = ethnl_default_done,
768 .policy = ethnl_wol_get_policy,
769 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1,
772 .cmd = ETHTOOL_MSG_WOL_SET,
773 .flags = GENL_UNS_ADMIN_PERM,
774 .doit = ethnl_set_wol,
775 .policy = ethnl_wol_set_policy,
776 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1,
779 .cmd = ETHTOOL_MSG_FEATURES_GET,
780 .doit = ethnl_default_doit,
781 .start = ethnl_default_start,
782 .dumpit = ethnl_default_dumpit,
783 .done = ethnl_default_done,
784 .policy = ethnl_features_get_policy,
785 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1,
788 .cmd = ETHTOOL_MSG_FEATURES_SET,
789 .flags = GENL_UNS_ADMIN_PERM,
790 .doit = ethnl_set_features,
791 .policy = ethnl_features_set_policy,
792 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1,
795 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET,
796 .doit = ethnl_default_doit,
797 .start = ethnl_default_start,
798 .dumpit = ethnl_default_dumpit,
799 .done = ethnl_default_done,
800 .policy = ethnl_privflags_get_policy,
801 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1,
804 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET,
805 .flags = GENL_UNS_ADMIN_PERM,
806 .doit = ethnl_set_privflags,
807 .policy = ethnl_privflags_set_policy,
808 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1,
811 .cmd = ETHTOOL_MSG_RINGS_GET,
812 .doit = ethnl_default_doit,
813 .start = ethnl_default_start,
814 .dumpit = ethnl_default_dumpit,
815 .done = ethnl_default_done,
816 .policy = ethnl_rings_get_policy,
817 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1,
820 .cmd = ETHTOOL_MSG_RINGS_SET,
821 .flags = GENL_UNS_ADMIN_PERM,
822 .doit = ethnl_set_rings,
823 .policy = ethnl_rings_set_policy,
824 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1,
827 .cmd = ETHTOOL_MSG_CHANNELS_GET,
828 .doit = ethnl_default_doit,
829 .start = ethnl_default_start,
830 .dumpit = ethnl_default_dumpit,
831 .done = ethnl_default_done,
832 .policy = ethnl_channels_get_policy,
833 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1,
836 .cmd = ETHTOOL_MSG_CHANNELS_SET,
837 .flags = GENL_UNS_ADMIN_PERM,
838 .doit = ethnl_set_channels,
839 .policy = ethnl_channels_set_policy,
840 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1,
843 .cmd = ETHTOOL_MSG_COALESCE_GET,
844 .doit = ethnl_default_doit,
845 .start = ethnl_default_start,
846 .dumpit = ethnl_default_dumpit,
847 .done = ethnl_default_done,
848 .policy = ethnl_coalesce_get_policy,
849 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1,
852 .cmd = ETHTOOL_MSG_COALESCE_SET,
853 .flags = GENL_UNS_ADMIN_PERM,
854 .doit = ethnl_set_coalesce,
855 .policy = ethnl_coalesce_set_policy,
856 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1,
859 .cmd = ETHTOOL_MSG_PAUSE_GET,
860 .doit = ethnl_default_doit,
861 .start = ethnl_default_start,
862 .dumpit = ethnl_default_dumpit,
863 .done = ethnl_default_done,
864 .policy = ethnl_pause_get_policy,
865 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1,
868 .cmd = ETHTOOL_MSG_PAUSE_SET,
869 .flags = GENL_UNS_ADMIN_PERM,
870 .doit = ethnl_set_pause,
871 .policy = ethnl_pause_set_policy,
872 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1,
875 .cmd = ETHTOOL_MSG_EEE_GET,
876 .doit = ethnl_default_doit,
877 .start = ethnl_default_start,
878 .dumpit = ethnl_default_dumpit,
879 .done = ethnl_default_done,
880 .policy = ethnl_eee_get_policy,
881 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1,
884 .cmd = ETHTOOL_MSG_EEE_SET,
885 .flags = GENL_UNS_ADMIN_PERM,
886 .doit = ethnl_set_eee,
887 .policy = ethnl_eee_set_policy,
888 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1,
891 .cmd = ETHTOOL_MSG_TSINFO_GET,
892 .doit = ethnl_default_doit,
893 .start = ethnl_default_start,
894 .dumpit = ethnl_default_dumpit,
895 .done = ethnl_default_done,
896 .policy = ethnl_tsinfo_get_policy,
897 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1,
900 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT,
901 .flags = GENL_UNS_ADMIN_PERM,
902 .doit = ethnl_act_cable_test,
903 .policy = ethnl_cable_test_act_policy,
904 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1,
907 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT,
908 .flags = GENL_UNS_ADMIN_PERM,
909 .doit = ethnl_act_cable_test_tdr,
910 .policy = ethnl_cable_test_tdr_act_policy,
911 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1,
914 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET,
915 .doit = ethnl_tunnel_info_doit,
916 .start = ethnl_tunnel_info_start,
917 .dumpit = ethnl_tunnel_info_dumpit,
918 .policy = ethnl_tunnel_info_get_policy,
919 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1,
922 .cmd = ETHTOOL_MSG_FEC_GET,
923 .doit = ethnl_default_doit,
924 .start = ethnl_default_start,
925 .dumpit = ethnl_default_dumpit,
926 .done = ethnl_default_done,
927 .policy = ethnl_fec_get_policy,
928 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1,
931 .cmd = ETHTOOL_MSG_FEC_SET,
932 .flags = GENL_UNS_ADMIN_PERM,
933 .doit = ethnl_set_fec,
934 .policy = ethnl_fec_set_policy,
935 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1,
938 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET,
939 .flags = GENL_UNS_ADMIN_PERM,
940 .doit = ethnl_default_doit,
941 .start = ethnl_default_start,
942 .dumpit = ethnl_default_dumpit,
943 .done = ethnl_default_done,
944 .policy = ethnl_module_eeprom_get_policy,
945 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1,
948 .cmd = ETHTOOL_MSG_STATS_GET,
949 .doit = ethnl_default_doit,
950 .start = ethnl_default_start,
951 .dumpit = ethnl_default_dumpit,
952 .done = ethnl_default_done,
953 .policy = ethnl_stats_get_policy,
954 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1,
958 static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
959 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME },
962 static struct genl_family ethtool_genl_family __ro_after_init = {
963 .name = ETHTOOL_GENL_NAME,
964 .version = ETHTOOL_GENL_VERSION,
966 .parallel_ops = true,
967 .ops = ethtool_genl_ops,
968 .n_ops = ARRAY_SIZE(ethtool_genl_ops),
969 .mcgrps = ethtool_nl_mcgrps,
970 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps),
975 static int __init ethnl_init(void)
979 ret = genl_register_family(ðtool_genl_family);
980 if (WARN(ret < 0, "ethtool: genetlink family registration failed"))
984 ret = register_netdevice_notifier(ðnl_netdev_notifier);
985 WARN(ret < 0, "ethtool: net device notifier registration failed");
989 subsys_initcall(ethnl_init);