2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * Routing netlink socket interface: protocol independent part.
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
16 * Vitaly E. Lavrov RTA_OK arithmetics was wrong.
19 #include <linux/errno.h>
20 #include <linux/module.h>
21 #include <linux/types.h>
22 #include <linux/socket.h>
23 #include <linux/kernel.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/fcntl.h>
30 #include <linux/slab.h>
31 #include <linux/interrupt.h>
32 #include <linux/capability.h>
33 #include <linux/skbuff.h>
34 #include <linux/init.h>
35 #include <linux/security.h>
36 #include <linux/mutex.h>
37 #include <linux/if_addr.h>
38 #include <linux/if_bridge.h>
39 #include <linux/if_vlan.h>
40 #include <linux/pci.h>
41 #include <linux/etherdevice.h>
43 #include <asm/uaccess.h>
45 #include <linux/inet.h>
46 #include <linux/netdevice.h>
47 #include <net/switchdev.h>
49 #include <net/protocol.h>
51 #include <net/route.h>
55 #include <net/pkt_sched.h>
56 #include <net/fib_rules.h>
57 #include <net/rtnetlink.h>
58 #include <net/net_namespace.h>
62 rtnl_dumpit_func dumpit;
63 rtnl_calcit_func calcit;
66 static DEFINE_MUTEX(rtnl_mutex);
70 mutex_lock(&rtnl_mutex);
72 EXPORT_SYMBOL(rtnl_lock);
74 static struct sk_buff *defer_kfree_skb_list;
75 void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail)
78 tail->next = defer_kfree_skb_list;
79 defer_kfree_skb_list = head;
82 EXPORT_SYMBOL(rtnl_kfree_skbs);
84 void __rtnl_unlock(void)
86 struct sk_buff *head = defer_kfree_skb_list;
88 defer_kfree_skb_list = NULL;
90 mutex_unlock(&rtnl_mutex);
93 struct sk_buff *next = head->next;
101 void rtnl_unlock(void)
103 /* This fellow will unlock it for us. */
106 EXPORT_SYMBOL(rtnl_unlock);
108 int rtnl_trylock(void)
110 return mutex_trylock(&rtnl_mutex);
112 EXPORT_SYMBOL(rtnl_trylock);
114 int rtnl_is_locked(void)
116 return mutex_is_locked(&rtnl_mutex);
118 EXPORT_SYMBOL(rtnl_is_locked);
120 #ifdef CONFIG_PROVE_LOCKING
121 bool lockdep_rtnl_is_held(void)
123 return lockdep_is_held(&rtnl_mutex);
125 EXPORT_SYMBOL(lockdep_rtnl_is_held);
126 #endif /* #ifdef CONFIG_PROVE_LOCKING */
128 static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1];
130 static inline int rtm_msgindex(int msgtype)
132 int msgindex = msgtype - RTM_BASE;
135 * msgindex < 0 implies someone tried to register a netlink
136 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
137 * the message type has not been added to linux/rtnetlink.h
139 BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
144 static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
146 struct rtnl_link *tab;
148 if (protocol <= RTNL_FAMILY_MAX)
149 tab = rtnl_msg_handlers[protocol];
153 if (tab == NULL || tab[msgindex].doit == NULL)
154 tab = rtnl_msg_handlers[PF_UNSPEC];
156 return tab[msgindex].doit;
159 static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
161 struct rtnl_link *tab;
163 if (protocol <= RTNL_FAMILY_MAX)
164 tab = rtnl_msg_handlers[protocol];
168 if (tab == NULL || tab[msgindex].dumpit == NULL)
169 tab = rtnl_msg_handlers[PF_UNSPEC];
171 return tab[msgindex].dumpit;
174 static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex)
176 struct rtnl_link *tab;
178 if (protocol <= RTNL_FAMILY_MAX)
179 tab = rtnl_msg_handlers[protocol];
183 if (tab == NULL || tab[msgindex].calcit == NULL)
184 tab = rtnl_msg_handlers[PF_UNSPEC];
186 return tab[msgindex].calcit;
190 * __rtnl_register - Register a rtnetlink message type
191 * @protocol: Protocol family or PF_UNSPEC
192 * @msgtype: rtnetlink message type
193 * @doit: Function pointer called for each request message
194 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
195 * @calcit: Function pointer to calc size of dump message
197 * Registers the specified function pointers (at least one of them has
198 * to be non-NULL) to be called whenever a request message for the
199 * specified protocol family and message type is received.
201 * The special protocol family PF_UNSPEC may be used to define fallback
202 * function pointers for the case when no entry for the specific protocol
205 * Returns 0 on success or a negative error code.
207 int __rtnl_register(int protocol, int msgtype,
208 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
209 rtnl_calcit_func calcit)
211 struct rtnl_link *tab;
214 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
215 msgindex = rtm_msgindex(msgtype);
217 tab = rtnl_msg_handlers[protocol];
219 tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
223 rtnl_msg_handlers[protocol] = tab;
227 tab[msgindex].doit = doit;
230 tab[msgindex].dumpit = dumpit;
233 tab[msgindex].calcit = calcit;
237 EXPORT_SYMBOL_GPL(__rtnl_register);
240 * rtnl_register - Register a rtnetlink message type
242 * Identical to __rtnl_register() but panics on failure. This is useful
243 * as failure of this function is very unlikely, it can only happen due
244 * to lack of memory when allocating the chain to store all message
245 * handlers for a protocol. Meant for use in init functions where lack
246 * of memory implies no sense in continuing.
248 void rtnl_register(int protocol, int msgtype,
249 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
250 rtnl_calcit_func calcit)
252 if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0)
253 panic("Unable to register rtnetlink message handler, "
254 "protocol = %d, message type = %d\n",
257 EXPORT_SYMBOL_GPL(rtnl_register);
260 * rtnl_unregister - Unregister a rtnetlink message type
261 * @protocol: Protocol family or PF_UNSPEC
262 * @msgtype: rtnetlink message type
264 * Returns 0 on success or a negative error code.
266 int rtnl_unregister(int protocol, int msgtype)
270 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
271 msgindex = rtm_msgindex(msgtype);
273 if (rtnl_msg_handlers[protocol] == NULL)
276 rtnl_msg_handlers[protocol][msgindex].doit = NULL;
277 rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
281 EXPORT_SYMBOL_GPL(rtnl_unregister);
284 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
285 * @protocol : Protocol family or PF_UNSPEC
287 * Identical to calling rtnl_unregster() for all registered message types
288 * of a certain protocol family.
290 void rtnl_unregister_all(int protocol)
292 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
294 kfree(rtnl_msg_handlers[protocol]);
295 rtnl_msg_handlers[protocol] = NULL;
297 EXPORT_SYMBOL_GPL(rtnl_unregister_all);
299 static LIST_HEAD(link_ops);
301 static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
303 const struct rtnl_link_ops *ops;
305 list_for_each_entry(ops, &link_ops, list) {
306 if (!strcmp(ops->kind, kind))
313 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
314 * @ops: struct rtnl_link_ops * to register
316 * The caller must hold the rtnl_mutex. This function should be used
317 * by drivers that create devices during module initialization. It
318 * must be called before registering the devices.
320 * Returns 0 on success or a negative error code.
322 int __rtnl_link_register(struct rtnl_link_ops *ops)
324 if (rtnl_link_ops_get(ops->kind))
327 /* The check for setup is here because if ops
328 * does not have that filled up, it is not possible
329 * to use the ops for creating device. So do not
330 * fill up dellink as well. That disables rtnl_dellink.
332 if (ops->setup && !ops->dellink)
333 ops->dellink = unregister_netdevice_queue;
335 list_add_tail(&ops->list, &link_ops);
338 EXPORT_SYMBOL_GPL(__rtnl_link_register);
341 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
342 * @ops: struct rtnl_link_ops * to register
344 * Returns 0 on success or a negative error code.
346 int rtnl_link_register(struct rtnl_link_ops *ops)
351 err = __rtnl_link_register(ops);
355 EXPORT_SYMBOL_GPL(rtnl_link_register);
357 static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
359 struct net_device *dev;
360 LIST_HEAD(list_kill);
362 for_each_netdev(net, dev) {
363 if (dev->rtnl_link_ops == ops)
364 ops->dellink(dev, &list_kill);
366 unregister_netdevice_many(&list_kill);
370 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
371 * @ops: struct rtnl_link_ops * to unregister
373 * The caller must hold the rtnl_mutex.
375 void __rtnl_link_unregister(struct rtnl_link_ops *ops)
380 __rtnl_kill_links(net, ops);
382 list_del(&ops->list);
384 EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
386 /* Return with the rtnl_lock held when there are no network
387 * devices unregistering in any network namespace.
389 static void rtnl_lock_unregistering_all(void)
393 DEFINE_WAIT_FUNC(wait, woken_wake_function);
395 add_wait_queue(&netdev_unregistering_wq, &wait);
397 unregistering = false;
400 if (net->dev_unreg_count > 0) {
401 unregistering = true;
409 wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
411 remove_wait_queue(&netdev_unregistering_wq, &wait);
415 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
416 * @ops: struct rtnl_link_ops * to unregister
418 void rtnl_link_unregister(struct rtnl_link_ops *ops)
420 /* Close the race with cleanup_net() */
421 mutex_lock(&net_mutex);
422 rtnl_lock_unregistering_all();
423 __rtnl_link_unregister(ops);
425 mutex_unlock(&net_mutex);
427 EXPORT_SYMBOL_GPL(rtnl_link_unregister);
429 static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev)
431 struct net_device *master_dev;
432 const struct rtnl_link_ops *ops;
434 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
437 ops = master_dev->rtnl_link_ops;
438 if (!ops || !ops->get_slave_size)
440 /* IFLA_INFO_SLAVE_DATA + nested data */
441 return nla_total_size(sizeof(struct nlattr)) +
442 ops->get_slave_size(master_dev, dev);
445 static size_t rtnl_link_get_size(const struct net_device *dev)
447 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
453 size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
454 nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */
457 /* IFLA_INFO_DATA + nested data */
458 size += nla_total_size(sizeof(struct nlattr)) +
461 if (ops->get_xstats_size)
462 /* IFLA_INFO_XSTATS */
463 size += nla_total_size(ops->get_xstats_size(dev));
465 size += rtnl_link_get_slave_info_data_size(dev);
470 static LIST_HEAD(rtnl_af_ops);
472 static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
474 const struct rtnl_af_ops *ops;
476 list_for_each_entry(ops, &rtnl_af_ops, list) {
477 if (ops->family == family)
485 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
486 * @ops: struct rtnl_af_ops * to register
488 * Returns 0 on success or a negative error code.
490 void rtnl_af_register(struct rtnl_af_ops *ops)
493 list_add_tail(&ops->list, &rtnl_af_ops);
496 EXPORT_SYMBOL_GPL(rtnl_af_register);
499 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
500 * @ops: struct rtnl_af_ops * to unregister
502 * The caller must hold the rtnl_mutex.
504 void __rtnl_af_unregister(struct rtnl_af_ops *ops)
506 list_del(&ops->list);
508 EXPORT_SYMBOL_GPL(__rtnl_af_unregister);
511 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
512 * @ops: struct rtnl_af_ops * to unregister
514 void rtnl_af_unregister(struct rtnl_af_ops *ops)
517 __rtnl_af_unregister(ops);
520 EXPORT_SYMBOL_GPL(rtnl_af_unregister);
522 static size_t rtnl_link_get_af_size(const struct net_device *dev,
525 struct rtnl_af_ops *af_ops;
529 size = nla_total_size(sizeof(struct nlattr));
531 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
532 if (af_ops->get_link_af_size) {
533 /* AF_* + nested data */
534 size += nla_total_size(sizeof(struct nlattr)) +
535 af_ops->get_link_af_size(dev, ext_filter_mask);
542 static bool rtnl_have_link_slave_info(const struct net_device *dev)
544 struct net_device *master_dev;
546 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
547 if (master_dev && master_dev->rtnl_link_ops)
552 static int rtnl_link_slave_info_fill(struct sk_buff *skb,
553 const struct net_device *dev)
555 struct net_device *master_dev;
556 const struct rtnl_link_ops *ops;
557 struct nlattr *slave_data;
560 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
563 ops = master_dev->rtnl_link_ops;
566 if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0)
568 if (ops->fill_slave_info) {
569 slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA);
572 err = ops->fill_slave_info(skb, master_dev, dev);
574 goto err_cancel_slave_data;
575 nla_nest_end(skb, slave_data);
579 err_cancel_slave_data:
580 nla_nest_cancel(skb, slave_data);
584 static int rtnl_link_info_fill(struct sk_buff *skb,
585 const struct net_device *dev)
587 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
593 if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
595 if (ops->fill_xstats) {
596 err = ops->fill_xstats(skb, dev);
600 if (ops->fill_info) {
601 data = nla_nest_start(skb, IFLA_INFO_DATA);
604 err = ops->fill_info(skb, dev);
606 goto err_cancel_data;
607 nla_nest_end(skb, data);
612 nla_nest_cancel(skb, data);
616 static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
618 struct nlattr *linkinfo;
621 linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
622 if (linkinfo == NULL)
625 err = rtnl_link_info_fill(skb, dev);
627 goto err_cancel_link;
629 err = rtnl_link_slave_info_fill(skb, dev);
631 goto err_cancel_link;
633 nla_nest_end(skb, linkinfo);
637 nla_nest_cancel(skb, linkinfo);
642 int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo)
644 struct sock *rtnl = net->rtnl;
647 NETLINK_CB(skb).dst_group = group;
649 atomic_inc(&skb->users);
650 netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
652 err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
656 int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
658 struct sock *rtnl = net->rtnl;
660 return nlmsg_unicast(rtnl, skb, pid);
662 EXPORT_SYMBOL(rtnl_unicast);
664 void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
665 struct nlmsghdr *nlh, gfp_t flags)
667 struct sock *rtnl = net->rtnl;
671 report = nlmsg_report(nlh);
673 nlmsg_notify(rtnl, skb, pid, group, report, flags);
675 EXPORT_SYMBOL(rtnl_notify);
677 void rtnl_set_sk_err(struct net *net, u32 group, int error)
679 struct sock *rtnl = net->rtnl;
681 netlink_set_err(rtnl, 0, group, error);
683 EXPORT_SYMBOL(rtnl_set_sk_err);
685 int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
690 mx = nla_nest_start(skb, RTA_METRICS);
694 for (i = 0; i < RTAX_MAX; i++) {
696 if (i == RTAX_CC_ALGO - 1) {
697 char tmp[TCP_CA_NAME_MAX], *name;
699 name = tcp_ca_get_name_by_key(metrics[i], tmp);
702 if (nla_put_string(skb, i + 1, name))
703 goto nla_put_failure;
704 } else if (i == RTAX_FEATURES - 1) {
705 u32 user_features = metrics[i] & RTAX_FEATURE_MASK;
709 BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK);
710 if (nla_put_u32(skb, i + 1, user_features))
711 goto nla_put_failure;
713 if (nla_put_u32(skb, i + 1, metrics[i]))
714 goto nla_put_failure;
721 nla_nest_cancel(skb, mx);
725 return nla_nest_end(skb, mx);
728 nla_nest_cancel(skb, mx);
731 EXPORT_SYMBOL(rtnetlink_put_metrics);
733 int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
734 long expires, u32 error)
736 struct rta_cacheinfo ci = {
737 .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse),
738 .rta_used = dst->__use,
739 .rta_clntref = atomic_read(&(dst->__refcnt)),
747 clock = jiffies_to_clock_t(abs(expires));
748 clock = min_t(unsigned long, clock, INT_MAX);
749 ci.rta_expires = (expires > 0) ? clock : -clock;
751 return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
753 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
755 static void set_operstate(struct net_device *dev, unsigned char transition)
757 unsigned char operstate = dev->operstate;
759 switch (transition) {
761 if ((operstate == IF_OPER_DORMANT ||
762 operstate == IF_OPER_UNKNOWN) &&
764 operstate = IF_OPER_UP;
767 case IF_OPER_DORMANT:
768 if (operstate == IF_OPER_UP ||
769 operstate == IF_OPER_UNKNOWN)
770 operstate = IF_OPER_DORMANT;
774 if (dev->operstate != operstate) {
775 write_lock_bh(&dev_base_lock);
776 dev->operstate = operstate;
777 write_unlock_bh(&dev_base_lock);
778 netdev_state_change(dev);
782 static unsigned int rtnl_dev_get_flags(const struct net_device *dev)
784 return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) |
785 (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI));
788 static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
789 const struct ifinfomsg *ifm)
791 unsigned int flags = ifm->ifi_flags;
793 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
795 flags = (flags & ifm->ifi_change) |
796 (rtnl_dev_get_flags(dev) & ~ifm->ifi_change);
801 static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
802 const struct rtnl_link_stats64 *b)
804 a->rx_packets = b->rx_packets;
805 a->tx_packets = b->tx_packets;
806 a->rx_bytes = b->rx_bytes;
807 a->tx_bytes = b->tx_bytes;
808 a->rx_errors = b->rx_errors;
809 a->tx_errors = b->tx_errors;
810 a->rx_dropped = b->rx_dropped;
811 a->tx_dropped = b->tx_dropped;
813 a->multicast = b->multicast;
814 a->collisions = b->collisions;
816 a->rx_length_errors = b->rx_length_errors;
817 a->rx_over_errors = b->rx_over_errors;
818 a->rx_crc_errors = b->rx_crc_errors;
819 a->rx_frame_errors = b->rx_frame_errors;
820 a->rx_fifo_errors = b->rx_fifo_errors;
821 a->rx_missed_errors = b->rx_missed_errors;
823 a->tx_aborted_errors = b->tx_aborted_errors;
824 a->tx_carrier_errors = b->tx_carrier_errors;
825 a->tx_fifo_errors = b->tx_fifo_errors;
826 a->tx_heartbeat_errors = b->tx_heartbeat_errors;
827 a->tx_window_errors = b->tx_window_errors;
829 a->rx_compressed = b->rx_compressed;
830 a->tx_compressed = b->tx_compressed;
832 a->rx_nohandler = b->rx_nohandler;
836 static inline int rtnl_vfinfo_size(const struct net_device *dev,
839 if (dev->dev.parent && dev_is_pci(dev->dev.parent) &&
840 (ext_filter_mask & RTEXT_FILTER_VF)) {
841 int num_vfs = dev_num_vf(dev->dev.parent);
842 size_t size = nla_total_size(sizeof(struct nlattr));
843 size += nla_total_size(num_vfs * sizeof(struct nlattr));
845 (nla_total_size(sizeof(struct ifla_vf_mac)) +
846 nla_total_size(MAX_VLAN_LIST_LEN *
847 sizeof(struct nlattr)) +
848 nla_total_size(MAX_VLAN_LIST_LEN *
849 sizeof(struct ifla_vf_vlan_info)) +
850 nla_total_size(sizeof(struct ifla_vf_spoofchk)) +
851 nla_total_size(sizeof(struct ifla_vf_rate)) +
852 nla_total_size(sizeof(struct ifla_vf_link_state)) +
853 nla_total_size(sizeof(struct ifla_vf_rss_query_en)) +
854 /* IFLA_VF_STATS_RX_PACKETS */
855 nla_total_size_64bit(sizeof(__u64)) +
856 /* IFLA_VF_STATS_TX_PACKETS */
857 nla_total_size_64bit(sizeof(__u64)) +
858 /* IFLA_VF_STATS_RX_BYTES */
859 nla_total_size_64bit(sizeof(__u64)) +
860 /* IFLA_VF_STATS_TX_BYTES */
861 nla_total_size_64bit(sizeof(__u64)) +
862 /* IFLA_VF_STATS_BROADCAST */
863 nla_total_size_64bit(sizeof(__u64)) +
864 /* IFLA_VF_STATS_MULTICAST */
865 nla_total_size_64bit(sizeof(__u64)) +
866 nla_total_size(sizeof(struct ifla_vf_trust)));
872 static size_t rtnl_port_size(const struct net_device *dev,
875 size_t port_size = nla_total_size(4) /* PORT_VF */
876 + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */
877 + nla_total_size(sizeof(struct ifla_port_vsi))
879 + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */
880 + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */
881 + nla_total_size(1) /* PROT_VDP_REQUEST */
882 + nla_total_size(2); /* PORT_VDP_RESPONSE */
883 size_t vf_ports_size = nla_total_size(sizeof(struct nlattr));
884 size_t vf_port_size = nla_total_size(sizeof(struct nlattr))
886 size_t port_self_size = nla_total_size(sizeof(struct nlattr))
889 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
890 !(ext_filter_mask & RTEXT_FILTER_VF))
892 if (dev_num_vf(dev->dev.parent))
893 return port_self_size + vf_ports_size +
894 vf_port_size * dev_num_vf(dev->dev.parent);
896 return port_self_size;
899 static size_t rtnl_xdp_size(const struct net_device *dev)
901 size_t xdp_size = nla_total_size(1); /* XDP_ATTACHED */
903 if (!dev->netdev_ops->ndo_xdp)
909 static noinline size_t if_nlmsg_size(const struct net_device *dev,
912 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
913 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
914 + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
915 + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
916 + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap))
917 + nla_total_size(sizeof(struct rtnl_link_stats))
918 + nla_total_size_64bit(sizeof(struct rtnl_link_stats64))
919 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
920 + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
921 + nla_total_size(4) /* IFLA_TXQLEN */
922 + nla_total_size(4) /* IFLA_WEIGHT */
923 + nla_total_size(4) /* IFLA_MTU */
924 + nla_total_size(4) /* IFLA_LINK */
925 + nla_total_size(4) /* IFLA_MASTER */
926 + nla_total_size(1) /* IFLA_CARRIER */
927 + nla_total_size(4) /* IFLA_PROMISCUITY */
928 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
929 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
930 + nla_total_size(4) /* IFLA_MAX_GSO_SEGS */
931 + nla_total_size(4) /* IFLA_MAX_GSO_SIZE */
932 + nla_total_size(1) /* IFLA_OPERSTATE */
933 + nla_total_size(1) /* IFLA_LINKMODE */
934 + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
935 + nla_total_size(4) /* IFLA_LINK_NETNSID */
936 + nla_total_size(ext_filter_mask
937 & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */
938 + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */
939 + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
940 + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
941 + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */
942 + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */
943 + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */
944 + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */
945 + rtnl_xdp_size(dev) /* IFLA_XDP */
946 + nla_total_size(1); /* IFLA_PROTO_DOWN */
950 static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
952 struct nlattr *vf_ports;
953 struct nlattr *vf_port;
957 vf_ports = nla_nest_start(skb, IFLA_VF_PORTS);
961 for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) {
962 vf_port = nla_nest_start(skb, IFLA_VF_PORT);
964 goto nla_put_failure;
965 if (nla_put_u32(skb, IFLA_PORT_VF, vf))
966 goto nla_put_failure;
967 err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb);
968 if (err == -EMSGSIZE)
969 goto nla_put_failure;
971 nla_nest_cancel(skb, vf_port);
974 nla_nest_end(skb, vf_port);
977 nla_nest_end(skb, vf_ports);
982 nla_nest_cancel(skb, vf_ports);
986 static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev)
988 struct nlattr *port_self;
991 port_self = nla_nest_start(skb, IFLA_PORT_SELF);
995 err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb);
997 nla_nest_cancel(skb, port_self);
998 return (err == -EMSGSIZE) ? err : 0;
1001 nla_nest_end(skb, port_self);
1006 static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev,
1007 u32 ext_filter_mask)
1011 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
1012 !(ext_filter_mask & RTEXT_FILTER_VF))
1015 err = rtnl_port_self_fill(skb, dev);
1019 if (dev_num_vf(dev->dev.parent)) {
1020 err = rtnl_vf_ports_fill(skb, dev);
1028 static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev)
1031 struct netdev_phys_item_id ppid;
1033 err = dev_get_phys_port_id(dev, &ppid);
1035 if (err == -EOPNOTSUPP)
1040 if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id))
1046 static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev)
1048 char name[IFNAMSIZ];
1051 err = dev_get_phys_port_name(dev, name, sizeof(name));
1053 if (err == -EOPNOTSUPP)
1058 if (nla_put(skb, IFLA_PHYS_PORT_NAME, strlen(name), name))
1064 static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
1067 struct switchdev_attr attr = {
1069 .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
1070 .flags = SWITCHDEV_F_NO_RECURSE,
1073 err = switchdev_port_attr_get(dev, &attr);
1075 if (err == -EOPNOTSUPP)
1080 if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len,
1087 static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb,
1088 struct net_device *dev)
1090 struct rtnl_link_stats64 *sp;
1091 struct nlattr *attr;
1093 attr = nla_reserve_64bit(skb, IFLA_STATS64,
1094 sizeof(struct rtnl_link_stats64), IFLA_PAD);
1098 sp = nla_data(attr);
1099 dev_get_stats(dev, sp);
1101 attr = nla_reserve(skb, IFLA_STATS,
1102 sizeof(struct rtnl_link_stats));
1106 copy_rtnl_link_stats(nla_data(attr), sp);
1111 static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
1112 struct net_device *dev,
1114 struct nlattr *vfinfo)
1116 struct ifla_vf_rss_query_en vf_rss_query_en;
1117 struct nlattr *vf, *vfstats, *vfvlanlist;
1118 struct ifla_vf_link_state vf_linkstate;
1119 struct ifla_vf_vlan_info vf_vlan_info;
1120 struct ifla_vf_spoofchk vf_spoofchk;
1121 struct ifla_vf_tx_rate vf_tx_rate;
1122 struct ifla_vf_stats vf_stats;
1123 struct ifla_vf_trust vf_trust;
1124 struct ifla_vf_vlan vf_vlan;
1125 struct ifla_vf_rate vf_rate;
1126 struct ifla_vf_mac vf_mac;
1127 struct ifla_vf_info ivi;
1129 /* Not all SR-IOV capable drivers support the
1130 * spoofcheck and "RSS query enable" query. Preset to
1131 * -1 so the user space tool can detect that the driver
1132 * didn't report anything.
1135 ivi.rss_query_en = -1;
1137 memset(ivi.mac, 0, sizeof(ivi.mac));
1138 /* The default value for VF link state is "auto"
1139 * IFLA_VF_LINK_STATE_AUTO which equals zero
1142 /* VLAN Protocol by default is 802.1Q */
1143 ivi.vlan_proto = htons(ETH_P_8021Q);
1144 if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi))
1154 vf_rss_query_en.vf =
1155 vf_trust.vf = ivi.vf;
1157 memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
1158 vf_vlan.vlan = ivi.vlan;
1159 vf_vlan.qos = ivi.qos;
1160 vf_vlan_info.vlan = ivi.vlan;
1161 vf_vlan_info.qos = ivi.qos;
1162 vf_vlan_info.vlan_proto = ivi.vlan_proto;
1163 vf_tx_rate.rate = ivi.max_tx_rate;
1164 vf_rate.min_tx_rate = ivi.min_tx_rate;
1165 vf_rate.max_tx_rate = ivi.max_tx_rate;
1166 vf_spoofchk.setting = ivi.spoofchk;
1167 vf_linkstate.link_state = ivi.linkstate;
1168 vf_rss_query_en.setting = ivi.rss_query_en;
1169 vf_trust.setting = ivi.trusted;
1170 vf = nla_nest_start(skb, IFLA_VF_INFO);
1172 goto nla_put_vfinfo_failure;
1173 if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) ||
1174 nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) ||
1175 nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate),
1177 nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate),
1179 nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk),
1181 nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate),
1183 nla_put(skb, IFLA_VF_RSS_QUERY_EN,
1184 sizeof(vf_rss_query_en),
1185 &vf_rss_query_en) ||
1186 nla_put(skb, IFLA_VF_TRUST,
1187 sizeof(vf_trust), &vf_trust))
1188 goto nla_put_vf_failure;
1189 vfvlanlist = nla_nest_start(skb, IFLA_VF_VLAN_LIST);
1191 goto nla_put_vf_failure;
1192 if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info),
1194 nla_nest_cancel(skb, vfvlanlist);
1195 goto nla_put_vf_failure;
1197 nla_nest_end(skb, vfvlanlist);
1198 memset(&vf_stats, 0, sizeof(vf_stats));
1199 if (dev->netdev_ops->ndo_get_vf_stats)
1200 dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num,
1202 vfstats = nla_nest_start(skb, IFLA_VF_STATS);
1204 goto nla_put_vf_failure;
1205 if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS,
1206 vf_stats.rx_packets, IFLA_VF_STATS_PAD) ||
1207 nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS,
1208 vf_stats.tx_packets, IFLA_VF_STATS_PAD) ||
1209 nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES,
1210 vf_stats.rx_bytes, IFLA_VF_STATS_PAD) ||
1211 nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES,
1212 vf_stats.tx_bytes, IFLA_VF_STATS_PAD) ||
1213 nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST,
1214 vf_stats.broadcast, IFLA_VF_STATS_PAD) ||
1215 nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST,
1216 vf_stats.multicast, IFLA_VF_STATS_PAD)) {
1217 nla_nest_cancel(skb, vfstats);
1218 goto nla_put_vf_failure;
1220 nla_nest_end(skb, vfstats);
1221 nla_nest_end(skb, vf);
1225 nla_nest_cancel(skb, vf);
1226 nla_put_vfinfo_failure:
1227 nla_nest_cancel(skb, vfinfo);
1231 static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)
1233 struct rtnl_link_ifmap map;
1235 memset(&map, 0, sizeof(map));
1236 map.mem_start = dev->mem_start;
1237 map.mem_end = dev->mem_end;
1238 map.base_addr = dev->base_addr;
1241 map.port = dev->if_port;
1243 if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD))
1249 static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev)
1251 struct netdev_xdp xdp_op = {};
1255 if (!dev->netdev_ops->ndo_xdp)
1257 xdp = nla_nest_start(skb, IFLA_XDP);
1260 xdp_op.command = XDP_QUERY_PROG;
1261 err = dev->netdev_ops->ndo_xdp(dev, &xdp_op);
1264 err = nla_put_u8(skb, IFLA_XDP_ATTACHED, xdp_op.prog_attached);
1268 nla_nest_end(skb, xdp);
1272 nla_nest_cancel(skb, xdp);
1276 static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
1277 int type, u32 pid, u32 seq, u32 change,
1278 unsigned int flags, u32 ext_filter_mask)
1280 struct ifinfomsg *ifm;
1281 struct nlmsghdr *nlh;
1282 struct nlattr *af_spec;
1283 struct rtnl_af_ops *af_ops;
1284 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
1287 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
1291 ifm = nlmsg_data(nlh);
1292 ifm->ifi_family = AF_UNSPEC;
1294 ifm->ifi_type = dev->type;
1295 ifm->ifi_index = dev->ifindex;
1296 ifm->ifi_flags = dev_get_flags(dev);
1297 ifm->ifi_change = change;
1299 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
1300 nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) ||
1301 nla_put_u8(skb, IFLA_OPERSTATE,
1302 netif_running(dev) ? dev->operstate : IF_OPER_DOWN) ||
1303 nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) ||
1304 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
1305 nla_put_u32(skb, IFLA_GROUP, dev->group) ||
1306 nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
1307 nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
1308 nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) ||
1309 nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) ||
1311 nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
1313 (dev->ifindex != dev_get_iflink(dev) &&
1314 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) ||
1316 nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) ||
1317 nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
1319 nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) ||
1321 nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
1322 nla_put_u32(skb, IFLA_CARRIER_CHANGES,
1323 atomic_read(&dev->carrier_changes)) ||
1324 nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down))
1325 goto nla_put_failure;
1327 if (rtnl_fill_link_ifmap(skb, dev))
1328 goto nla_put_failure;
1330 if (dev->addr_len) {
1331 if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) ||
1332 nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast))
1333 goto nla_put_failure;
1336 if (rtnl_phys_port_id_fill(skb, dev))
1337 goto nla_put_failure;
1339 if (rtnl_phys_port_name_fill(skb, dev))
1340 goto nla_put_failure;
1342 if (rtnl_phys_switch_id_fill(skb, dev))
1343 goto nla_put_failure;
1345 if (rtnl_fill_stats(skb, dev))
1346 goto nla_put_failure;
1348 if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) &&
1349 nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent)))
1350 goto nla_put_failure;
1352 if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent &&
1353 ext_filter_mask & RTEXT_FILTER_VF) {
1355 struct nlattr *vfinfo;
1356 int num_vfs = dev_num_vf(dev->dev.parent);
1358 vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);
1360 goto nla_put_failure;
1361 for (i = 0; i < num_vfs; i++) {
1362 if (rtnl_fill_vfinfo(skb, dev, i, vfinfo))
1363 goto nla_put_failure;
1366 nla_nest_end(skb, vfinfo);
1369 if (rtnl_port_fill(skb, dev, ext_filter_mask))
1370 goto nla_put_failure;
1372 if (rtnl_xdp_fill(skb, dev))
1373 goto nla_put_failure;
1375 if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) {
1376 if (rtnl_link_fill(skb, dev) < 0)
1377 goto nla_put_failure;
1380 if (dev->rtnl_link_ops &&
1381 dev->rtnl_link_ops->get_link_net) {
1382 struct net *link_net = dev->rtnl_link_ops->get_link_net(dev);
1384 if (!net_eq(dev_net(dev), link_net)) {
1385 int id = peernet2id_alloc(dev_net(dev), link_net);
1387 if (nla_put_s32(skb, IFLA_LINK_NETNSID, id))
1388 goto nla_put_failure;
1392 if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC)))
1393 goto nla_put_failure;
1395 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
1396 if (af_ops->fill_link_af) {
1400 if (!(af = nla_nest_start(skb, af_ops->family)))
1401 goto nla_put_failure;
1403 err = af_ops->fill_link_af(skb, dev, ext_filter_mask);
1406 * Caller may return ENODATA to indicate that there
1407 * was no data to be dumped. This is not an error, it
1408 * means we should trim the attribute header and
1411 if (err == -ENODATA)
1412 nla_nest_cancel(skb, af);
1414 goto nla_put_failure;
1416 nla_nest_end(skb, af);
1420 nla_nest_end(skb, af_spec);
1422 nlmsg_end(skb, nlh);
1426 nlmsg_cancel(skb, nlh);
1430 static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
1431 [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
1432 [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1433 [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1434 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
1435 [IFLA_MTU] = { .type = NLA_U32 },
1436 [IFLA_LINK] = { .type = NLA_U32 },
1437 [IFLA_MASTER] = { .type = NLA_U32 },
1438 [IFLA_CARRIER] = { .type = NLA_U8 },
1439 [IFLA_TXQLEN] = { .type = NLA_U32 },
1440 [IFLA_WEIGHT] = { .type = NLA_U32 },
1441 [IFLA_OPERSTATE] = { .type = NLA_U8 },
1442 [IFLA_LINKMODE] = { .type = NLA_U8 },
1443 [IFLA_LINKINFO] = { .type = NLA_NESTED },
1444 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
1445 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
1446 [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 },
1447 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED },
1448 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
1449 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
1450 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
1451 [IFLA_EXT_MASK] = { .type = NLA_U32 },
1452 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
1453 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
1454 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
1455 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
1456 [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */
1457 [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
1458 [IFLA_LINK_NETNSID] = { .type = NLA_S32 },
1459 [IFLA_PROTO_DOWN] = { .type = NLA_U8 },
1460 [IFLA_XDP] = { .type = NLA_NESTED },
1463 static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
1464 [IFLA_INFO_KIND] = { .type = NLA_STRING },
1465 [IFLA_INFO_DATA] = { .type = NLA_NESTED },
1466 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
1467 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
1470 static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
1471 [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) },
1472 [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) },
1473 [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED },
1474 [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) },
1475 [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) },
1476 [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) },
1477 [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) },
1478 [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) },
1479 [IFLA_VF_STATS] = { .type = NLA_NESTED },
1480 [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) },
1481 [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) },
1482 [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) },
1485 static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = {
1486 [IFLA_PORT_VF] = { .type = NLA_U32 },
1487 [IFLA_PORT_PROFILE] = { .type = NLA_STRING,
1488 .len = PORT_PROFILE_MAX },
1489 [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY,
1490 .len = sizeof(struct ifla_port_vsi)},
1491 [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY,
1492 .len = PORT_UUID_MAX },
1493 [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING,
1494 .len = PORT_UUID_MAX },
1495 [IFLA_PORT_REQUEST] = { .type = NLA_U8, },
1496 [IFLA_PORT_RESPONSE] = { .type = NLA_U16, },
1499 static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = {
1500 [IFLA_XDP_FD] = { .type = NLA_S32 },
1501 [IFLA_XDP_ATTACHED] = { .type = NLA_U8 },
1504 static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla)
1506 const struct rtnl_link_ops *ops = NULL;
1507 struct nlattr *linfo[IFLA_INFO_MAX + 1];
1509 if (nla_parse_nested(linfo, IFLA_INFO_MAX, nla, ifla_info_policy) < 0)
1512 if (linfo[IFLA_INFO_KIND]) {
1513 char kind[MODULE_NAME_LEN];
1515 nla_strlcpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind));
1516 ops = rtnl_link_ops_get(kind);
1522 static bool link_master_filtered(struct net_device *dev, int master_idx)
1524 struct net_device *master;
1529 master = netdev_master_upper_dev_get(dev);
1530 if (!master || master->ifindex != master_idx)
1536 static bool link_kind_filtered(const struct net_device *dev,
1537 const struct rtnl_link_ops *kind_ops)
1539 if (kind_ops && dev->rtnl_link_ops != kind_ops)
1545 static bool link_dump_filtered(struct net_device *dev,
1547 const struct rtnl_link_ops *kind_ops)
1549 if (link_master_filtered(dev, master_idx) ||
1550 link_kind_filtered(dev, kind_ops))
1556 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
1558 struct net *net = sock_net(skb->sk);
1561 struct net_device *dev;
1562 struct hlist_head *head;
1563 struct nlattr *tb[IFLA_MAX+1];
1564 u32 ext_filter_mask = 0;
1565 const struct rtnl_link_ops *kind_ops = NULL;
1566 unsigned int flags = NLM_F_MULTI;
1572 s_idx = cb->args[1];
1574 cb->seq = net->dev_base_seq;
1576 /* A hack to preserve kernel<->userspace interface.
1577 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1578 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1579 * what iproute2 < v3.9.0 used.
1580 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1581 * attribute, its netlink message is shorter than struct ifinfomsg.
1583 hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ?
1584 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
1586 if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
1588 if (tb[IFLA_EXT_MASK])
1589 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
1591 if (tb[IFLA_MASTER])
1592 master_idx = nla_get_u32(tb[IFLA_MASTER]);
1594 if (tb[IFLA_LINKINFO])
1595 kind_ops = linkinfo_to_kind_ops(tb[IFLA_LINKINFO]);
1597 if (master_idx || kind_ops)
1598 flags |= NLM_F_DUMP_FILTERED;
1601 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
1603 head = &net->dev_index_head[h];
1604 hlist_for_each_entry(dev, head, index_hlist) {
1605 if (link_dump_filtered(dev, master_idx, kind_ops))
1609 err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
1610 NETLINK_CB(cb->skb).portid,
1611 cb->nlh->nlmsg_seq, 0,
1614 /* If we ran out of room on the first message,
1617 WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
1622 nl_dump_check_consistent(cb, nlmsg_hdr(skb));
1634 int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len)
1636 return nla_parse(tb, IFLA_MAX, head, len, ifla_policy);
1638 EXPORT_SYMBOL(rtnl_nla_parse_ifla);
1640 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
1643 /* Examine the link attributes and figure out which
1644 * network namespace we are talking about.
1646 if (tb[IFLA_NET_NS_PID])
1647 net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
1648 else if (tb[IFLA_NET_NS_FD])
1649 net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD]));
1651 net = get_net(src_net);
1654 EXPORT_SYMBOL(rtnl_link_get_net);
1656 static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
1659 if (tb[IFLA_ADDRESS] &&
1660 nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
1663 if (tb[IFLA_BROADCAST] &&
1664 nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
1668 if (tb[IFLA_AF_SPEC]) {
1672 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1673 const struct rtnl_af_ops *af_ops;
1675 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
1676 return -EAFNOSUPPORT;
1678 if (!af_ops->set_link_af)
1681 if (af_ops->validate_link_af) {
1682 err = af_ops->validate_link_af(dev, af);
1692 static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt,
1695 const struct net_device_ops *ops = dev->netdev_ops;
1697 return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type);
1700 static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type)
1702 if (dev->type != ARPHRD_INFINIBAND)
1705 return handle_infiniband_guid(dev, ivt, guid_type);
1708 static int do_setvfinfo(struct net_device *dev, struct nlattr **tb)
1710 const struct net_device_ops *ops = dev->netdev_ops;
1713 if (tb[IFLA_VF_MAC]) {
1714 struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]);
1717 if (ops->ndo_set_vf_mac)
1718 err = ops->ndo_set_vf_mac(dev, ivm->vf,
1724 if (tb[IFLA_VF_VLAN]) {
1725 struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]);
1728 if (ops->ndo_set_vf_vlan)
1729 err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan,
1731 htons(ETH_P_8021Q));
1736 if (tb[IFLA_VF_VLAN_LIST]) {
1737 struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN];
1738 struct nlattr *attr;
1742 if (!ops->ndo_set_vf_vlan)
1745 nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) {
1746 if (nla_type(attr) != IFLA_VF_VLAN_INFO ||
1747 nla_len(attr) < NLA_HDRLEN) {
1750 if (len >= MAX_VLAN_LIST_LEN)
1752 ivvl[len] = nla_data(attr);
1756 err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan,
1757 ivvl[0]->qos, ivvl[0]->vlan_proto);
1762 if (tb[IFLA_VF_TX_RATE]) {
1763 struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]);
1764 struct ifla_vf_info ivf;
1767 if (ops->ndo_get_vf_config)
1768 err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf);
1773 if (ops->ndo_set_vf_rate)
1774 err = ops->ndo_set_vf_rate(dev, ivt->vf,
1781 if (tb[IFLA_VF_RATE]) {
1782 struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]);
1785 if (ops->ndo_set_vf_rate)
1786 err = ops->ndo_set_vf_rate(dev, ivt->vf,
1793 if (tb[IFLA_VF_SPOOFCHK]) {
1794 struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]);
1797 if (ops->ndo_set_vf_spoofchk)
1798 err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
1804 if (tb[IFLA_VF_LINK_STATE]) {
1805 struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]);
1808 if (ops->ndo_set_vf_link_state)
1809 err = ops->ndo_set_vf_link_state(dev, ivl->vf,
1815 if (tb[IFLA_VF_RSS_QUERY_EN]) {
1816 struct ifla_vf_rss_query_en *ivrssq_en;
1819 ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]);
1820 if (ops->ndo_set_vf_rss_query_en)
1821 err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf,
1822 ivrssq_en->setting);
1827 if (tb[IFLA_VF_TRUST]) {
1828 struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]);
1831 if (ops->ndo_set_vf_trust)
1832 err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting);
1837 if (tb[IFLA_VF_IB_NODE_GUID]) {
1838 struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]);
1840 if (!ops->ndo_set_vf_guid)
1843 return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID);
1846 if (tb[IFLA_VF_IB_PORT_GUID]) {
1847 struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]);
1849 if (!ops->ndo_set_vf_guid)
1852 return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID);
1858 static int do_set_master(struct net_device *dev, int ifindex)
1860 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
1861 const struct net_device_ops *ops;
1865 if (upper_dev->ifindex == ifindex)
1867 ops = upper_dev->netdev_ops;
1868 if (ops->ndo_del_slave) {
1869 err = ops->ndo_del_slave(upper_dev, dev);
1878 upper_dev = __dev_get_by_index(dev_net(dev), ifindex);
1881 ops = upper_dev->netdev_ops;
1882 if (ops->ndo_add_slave) {
1883 err = ops->ndo_add_slave(upper_dev, dev);
1893 #define DO_SETLINK_MODIFIED 0x01
1894 /* notify flag means notify + modified. */
1895 #define DO_SETLINK_NOTIFY 0x03
1896 static int do_setlink(const struct sk_buff *skb,
1897 struct net_device *dev, struct ifinfomsg *ifm,
1898 struct nlattr **tb, char *ifname, int status)
1900 const struct net_device_ops *ops = dev->netdev_ops;
1903 if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) {
1904 struct net *net = rtnl_link_get_net(dev_net(dev), tb);
1909 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
1914 err = dev_change_net_namespace(dev, net, ifname);
1918 status |= DO_SETLINK_MODIFIED;
1922 struct rtnl_link_ifmap *u_map;
1925 if (!ops->ndo_set_config) {
1930 if (!netif_device_present(dev)) {
1935 u_map = nla_data(tb[IFLA_MAP]);
1936 k_map.mem_start = (unsigned long) u_map->mem_start;
1937 k_map.mem_end = (unsigned long) u_map->mem_end;
1938 k_map.base_addr = (unsigned short) u_map->base_addr;
1939 k_map.irq = (unsigned char) u_map->irq;
1940 k_map.dma = (unsigned char) u_map->dma;
1941 k_map.port = (unsigned char) u_map->port;
1943 err = ops->ndo_set_config(dev, &k_map);
1947 status |= DO_SETLINK_NOTIFY;
1950 if (tb[IFLA_ADDRESS]) {
1951 struct sockaddr *sa;
1954 len = sizeof(sa_family_t) + dev->addr_len;
1955 sa = kmalloc(len, GFP_KERNEL);
1960 sa->sa_family = dev->type;
1961 memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
1963 err = dev_set_mac_address(dev, sa);
1967 status |= DO_SETLINK_MODIFIED;
1971 err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
1974 status |= DO_SETLINK_MODIFIED;
1977 if (tb[IFLA_GROUP]) {
1978 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
1979 status |= DO_SETLINK_NOTIFY;
1983 * Interface selected by interface index but interface
1984 * name provided implies that a name change has been
1987 if (ifm->ifi_index > 0 && ifname[0]) {
1988 err = dev_change_name(dev, ifname);
1991 status |= DO_SETLINK_MODIFIED;
1994 if (tb[IFLA_IFALIAS]) {
1995 err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
1996 nla_len(tb[IFLA_IFALIAS]));
1999 status |= DO_SETLINK_NOTIFY;
2002 if (tb[IFLA_BROADCAST]) {
2003 nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
2004 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
2007 if (ifm->ifi_flags || ifm->ifi_change) {
2008 err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
2013 if (tb[IFLA_MASTER]) {
2014 err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]));
2017 status |= DO_SETLINK_MODIFIED;
2020 if (tb[IFLA_CARRIER]) {
2021 err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
2024 status |= DO_SETLINK_MODIFIED;
2027 if (tb[IFLA_TXQLEN]) {
2028 unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]);
2029 unsigned long orig_len = dev->tx_queue_len;
2031 if (dev->tx_queue_len ^ value) {
2032 dev->tx_queue_len = value;
2033 err = call_netdevice_notifiers(
2034 NETDEV_CHANGE_TX_QUEUE_LEN, dev);
2035 err = notifier_to_errno(err);
2037 dev->tx_queue_len = orig_len;
2040 status |= DO_SETLINK_NOTIFY;
2044 if (tb[IFLA_OPERSTATE])
2045 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
2047 if (tb[IFLA_LINKMODE]) {
2048 unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]);
2050 write_lock_bh(&dev_base_lock);
2051 if (dev->link_mode ^ value)
2052 status |= DO_SETLINK_NOTIFY;
2053 dev->link_mode = value;
2054 write_unlock_bh(&dev_base_lock);
2057 if (tb[IFLA_VFINFO_LIST]) {
2058 struct nlattr *vfinfo[IFLA_VF_MAX + 1];
2059 struct nlattr *attr;
2062 nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
2063 if (nla_type(attr) != IFLA_VF_INFO ||
2064 nla_len(attr) < NLA_HDRLEN) {
2068 err = nla_parse_nested(vfinfo, IFLA_VF_MAX, attr,
2072 err = do_setvfinfo(dev, vfinfo);
2075 status |= DO_SETLINK_NOTIFY;
2080 if (tb[IFLA_VF_PORTS]) {
2081 struct nlattr *port[IFLA_PORT_MAX+1];
2082 struct nlattr *attr;
2087 if (!ops->ndo_set_vf_port)
2090 nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) {
2091 if (nla_type(attr) != IFLA_VF_PORT ||
2092 nla_len(attr) < NLA_HDRLEN) {
2096 err = nla_parse_nested(port, IFLA_PORT_MAX, attr,
2100 if (!port[IFLA_PORT_VF]) {
2104 vf = nla_get_u32(port[IFLA_PORT_VF]);
2105 err = ops->ndo_set_vf_port(dev, vf, port);
2108 status |= DO_SETLINK_NOTIFY;
2113 if (tb[IFLA_PORT_SELF]) {
2114 struct nlattr *port[IFLA_PORT_MAX+1];
2116 err = nla_parse_nested(port, IFLA_PORT_MAX,
2117 tb[IFLA_PORT_SELF], ifla_port_policy);
2122 if (ops->ndo_set_vf_port)
2123 err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
2126 status |= DO_SETLINK_NOTIFY;
2129 if (tb[IFLA_AF_SPEC]) {
2133 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
2134 const struct rtnl_af_ops *af_ops;
2136 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
2139 err = af_ops->set_link_af(dev, af);
2143 status |= DO_SETLINK_NOTIFY;
2148 if (tb[IFLA_PROTO_DOWN]) {
2149 err = dev_change_proto_down(dev,
2150 nla_get_u8(tb[IFLA_PROTO_DOWN]));
2153 status |= DO_SETLINK_NOTIFY;
2157 struct nlattr *xdp[IFLA_XDP_MAX + 1];
2159 err = nla_parse_nested(xdp, IFLA_XDP_MAX, tb[IFLA_XDP],
2164 if (xdp[IFLA_XDP_ATTACHED]) {
2168 if (xdp[IFLA_XDP_FD]) {
2169 err = dev_change_xdp_fd(dev,
2170 nla_get_s32(xdp[IFLA_XDP_FD]));
2173 status |= DO_SETLINK_NOTIFY;
2178 if (status & DO_SETLINK_MODIFIED) {
2179 if (status & DO_SETLINK_NOTIFY)
2180 netdev_state_change(dev);
2183 net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
2190 static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
2192 struct net *net = sock_net(skb->sk);
2193 struct ifinfomsg *ifm;
2194 struct net_device *dev;
2196 struct nlattr *tb[IFLA_MAX+1];
2197 char ifname[IFNAMSIZ];
2199 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2203 if (tb[IFLA_IFNAME])
2204 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2209 ifm = nlmsg_data(nlh);
2210 if (ifm->ifi_index > 0)
2211 dev = __dev_get_by_index(net, ifm->ifi_index);
2212 else if (tb[IFLA_IFNAME])
2213 dev = __dev_get_by_name(net, ifname);
2222 err = validate_linkmsg(dev, tb);
2226 err = do_setlink(skb, dev, ifm, tb, ifname, 0);
2231 static int rtnl_group_dellink(const struct net *net, int group)
2233 struct net_device *dev, *aux;
2234 LIST_HEAD(list_kill);
2240 for_each_netdev(net, dev) {
2241 if (dev->group == group) {
2242 const struct rtnl_link_ops *ops;
2245 ops = dev->rtnl_link_ops;
2246 if (!ops || !ops->dellink)
2254 for_each_netdev_safe(net, dev, aux) {
2255 if (dev->group == group) {
2256 const struct rtnl_link_ops *ops;
2258 ops = dev->rtnl_link_ops;
2259 ops->dellink(dev, &list_kill);
2262 unregister_netdevice_many(&list_kill);
2267 int rtnl_delete_link(struct net_device *dev)
2269 const struct rtnl_link_ops *ops;
2270 LIST_HEAD(list_kill);
2272 ops = dev->rtnl_link_ops;
2273 if (!ops || !ops->dellink)
2276 ops->dellink(dev, &list_kill);
2277 unregister_netdevice_many(&list_kill);
2281 EXPORT_SYMBOL_GPL(rtnl_delete_link);
2283 static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
2285 struct net *net = sock_net(skb->sk);
2286 struct net_device *dev;
2287 struct ifinfomsg *ifm;
2288 char ifname[IFNAMSIZ];
2289 struct nlattr *tb[IFLA_MAX+1];
2292 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2296 if (tb[IFLA_IFNAME])
2297 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2299 ifm = nlmsg_data(nlh);
2300 if (ifm->ifi_index > 0)
2301 dev = __dev_get_by_index(net, ifm->ifi_index);
2302 else if (tb[IFLA_IFNAME])
2303 dev = __dev_get_by_name(net, ifname);
2304 else if (tb[IFLA_GROUP])
2305 return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP]));
2312 return rtnl_delete_link(dev);
2315 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
2317 unsigned int old_flags;
2320 old_flags = dev->flags;
2321 if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
2322 err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
2327 dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
2329 __dev_notify_flags(dev, old_flags, ~0U);
2332 EXPORT_SYMBOL(rtnl_configure_link);
2334 struct net_device *rtnl_create_link(struct net *net,
2335 const char *ifname, unsigned char name_assign_type,
2336 const struct rtnl_link_ops *ops, struct nlattr *tb[])
2339 struct net_device *dev;
2340 unsigned int num_tx_queues = 1;
2341 unsigned int num_rx_queues = 1;
2343 if (tb[IFLA_NUM_TX_QUEUES])
2344 num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
2345 else if (ops->get_num_tx_queues)
2346 num_tx_queues = ops->get_num_tx_queues();
2348 if (tb[IFLA_NUM_RX_QUEUES])
2349 num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]);
2350 else if (ops->get_num_rx_queues)
2351 num_rx_queues = ops->get_num_rx_queues();
2354 dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type,
2355 ops->setup, num_tx_queues, num_rx_queues);
2359 dev_net_set(dev, net);
2360 dev->rtnl_link_ops = ops;
2361 dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
2364 dev->mtu = nla_get_u32(tb[IFLA_MTU]);
2365 if (tb[IFLA_ADDRESS]) {
2366 memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
2367 nla_len(tb[IFLA_ADDRESS]));
2368 dev->addr_assign_type = NET_ADDR_SET;
2370 if (tb[IFLA_BROADCAST])
2371 memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
2372 nla_len(tb[IFLA_BROADCAST]));
2373 if (tb[IFLA_TXQLEN])
2374 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
2375 if (tb[IFLA_OPERSTATE])
2376 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
2377 if (tb[IFLA_LINKMODE])
2378 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
2380 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
2385 return ERR_PTR(err);
2387 EXPORT_SYMBOL(rtnl_create_link);
2389 static int rtnl_group_changelink(const struct sk_buff *skb,
2390 struct net *net, int group,
2391 struct ifinfomsg *ifm,
2394 struct net_device *dev, *aux;
2397 for_each_netdev_safe(net, dev, aux) {
2398 if (dev->group == group) {
2399 err = do_setlink(skb, dev, ifm, tb, NULL, 0);
2408 static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh)
2410 struct net *net = sock_net(skb->sk);
2411 const struct rtnl_link_ops *ops;
2412 const struct rtnl_link_ops *m_ops = NULL;
2413 struct net_device *dev;
2414 struct net_device *master_dev = NULL;
2415 struct ifinfomsg *ifm;
2416 char kind[MODULE_NAME_LEN];
2417 char ifname[IFNAMSIZ];
2418 struct nlattr *tb[IFLA_MAX+1];
2419 struct nlattr *linkinfo[IFLA_INFO_MAX+1];
2420 unsigned char name_assign_type = NET_NAME_USER;
2423 #ifdef CONFIG_MODULES
2426 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2430 if (tb[IFLA_IFNAME])
2431 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2435 ifm = nlmsg_data(nlh);
2436 if (ifm->ifi_index > 0)
2437 dev = __dev_get_by_index(net, ifm->ifi_index);
2440 dev = __dev_get_by_name(net, ifname);
2446 master_dev = netdev_master_upper_dev_get(dev);
2448 m_ops = master_dev->rtnl_link_ops;
2451 err = validate_linkmsg(dev, tb);
2455 if (tb[IFLA_LINKINFO]) {
2456 err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
2457 tb[IFLA_LINKINFO], ifla_info_policy);
2461 memset(linkinfo, 0, sizeof(linkinfo));
2463 if (linkinfo[IFLA_INFO_KIND]) {
2464 nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
2465 ops = rtnl_link_ops_get(kind);
2472 struct nlattr *attr[ops ? ops->maxtype + 1 : 1];
2473 struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1];
2474 struct nlattr **data = NULL;
2475 struct nlattr **slave_data = NULL;
2476 struct net *dest_net, *link_net = NULL;
2479 if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
2480 err = nla_parse_nested(attr, ops->maxtype,
2481 linkinfo[IFLA_INFO_DATA],
2487 if (ops->validate) {
2488 err = ops->validate(tb, data);
2495 if (m_ops->slave_maxtype &&
2496 linkinfo[IFLA_INFO_SLAVE_DATA]) {
2497 err = nla_parse_nested(slave_attr,
2498 m_ops->slave_maxtype,
2499 linkinfo[IFLA_INFO_SLAVE_DATA],
2500 m_ops->slave_policy);
2503 slave_data = slave_attr;
2505 if (m_ops->slave_validate) {
2506 err = m_ops->slave_validate(tb, slave_data);
2515 if (nlh->nlmsg_flags & NLM_F_EXCL)
2517 if (nlh->nlmsg_flags & NLM_F_REPLACE)
2520 if (linkinfo[IFLA_INFO_DATA]) {
2521 if (!ops || ops != dev->rtnl_link_ops ||
2525 err = ops->changelink(dev, tb, data);
2528 status |= DO_SETLINK_NOTIFY;
2531 if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
2532 if (!m_ops || !m_ops->slave_changelink)
2535 err = m_ops->slave_changelink(master_dev, dev,
2539 status |= DO_SETLINK_NOTIFY;
2542 return do_setlink(skb, dev, ifm, tb, ifname, status);
2545 if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
2546 if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
2547 return rtnl_group_changelink(skb, net,
2548 nla_get_u32(tb[IFLA_GROUP]),
2553 if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
2557 #ifdef CONFIG_MODULES
2560 request_module("rtnl-link-%s", kind);
2562 ops = rtnl_link_ops_get(kind);
2574 snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
2575 name_assign_type = NET_NAME_ENUM;
2578 dest_net = rtnl_link_get_net(net, tb);
2579 if (IS_ERR(dest_net))
2580 return PTR_ERR(dest_net);
2583 if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN))
2586 if (tb[IFLA_LINK_NETNSID]) {
2587 int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
2589 link_net = get_net_ns_by_id(dest_net, id);
2595 if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN))
2599 dev = rtnl_create_link(link_net ? : dest_net, ifname,
2600 name_assign_type, ops, tb);
2606 dev->ifindex = ifm->ifi_index;
2609 err = ops->newlink(link_net ? : net, dev, tb, data);
2610 /* Drivers should call free_netdev() in ->destructor
2611 * and unregister it on failure after registration
2612 * so that device could be finally freed in rtnl_unlock.
2615 /* If device is not registered at all, free it now */
2616 if (dev->reg_state == NETREG_UNINITIALIZED)
2621 err = register_netdevice(dev);
2627 err = rtnl_configure_link(dev, ifm);
2629 goto out_unregister;
2631 err = dev_change_net_namespace(dev, dest_net, ifname);
2633 goto out_unregister;
2642 LIST_HEAD(list_kill);
2644 ops->dellink(dev, &list_kill);
2645 unregister_netdevice_many(&list_kill);
2647 unregister_netdevice(dev);
2653 static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh)
2655 struct net *net = sock_net(skb->sk);
2656 struct ifinfomsg *ifm;
2657 char ifname[IFNAMSIZ];
2658 struct nlattr *tb[IFLA_MAX+1];
2659 struct net_device *dev = NULL;
2660 struct sk_buff *nskb;
2662 u32 ext_filter_mask = 0;
2664 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2668 if (tb[IFLA_IFNAME])
2669 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2671 if (tb[IFLA_EXT_MASK])
2672 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
2674 ifm = nlmsg_data(nlh);
2675 if (ifm->ifi_index > 0)
2676 dev = __dev_get_by_index(net, ifm->ifi_index);
2677 else if (tb[IFLA_IFNAME])
2678 dev = __dev_get_by_name(net, ifname);
2685 nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL);
2689 err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid,
2690 nlh->nlmsg_seq, 0, 0, ext_filter_mask);
2692 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2693 WARN_ON(err == -EMSGSIZE);
2696 err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid);
2701 static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh)
2703 struct net *net = sock_net(skb->sk);
2704 struct net_device *dev;
2705 struct nlattr *tb[IFLA_MAX+1];
2706 u32 ext_filter_mask = 0;
2707 u16 min_ifinfo_dump_size = 0;
2710 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
2711 hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ?
2712 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
2714 if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
2715 if (tb[IFLA_EXT_MASK])
2716 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
2719 if (!ext_filter_mask)
2720 return NLMSG_GOODSIZE;
2722 * traverse the list of net devices and compute the minimum
2723 * buffer size based upon the filter mask.
2725 list_for_each_entry(dev, &net->dev_base_head, dev_list) {
2726 min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size,
2731 return min_ifinfo_dump_size;
2734 static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
2737 int s_idx = cb->family;
2741 for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) {
2742 int type = cb->nlh->nlmsg_type-RTM_BASE;
2743 if (idx < s_idx || idx == PF_PACKET)
2745 if (rtnl_msg_handlers[idx] == NULL ||
2746 rtnl_msg_handlers[idx][type].dumpit == NULL)
2749 memset(&cb->args[0], 0, sizeof(cb->args));
2753 if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
2761 struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
2762 unsigned int change, gfp_t flags)
2764 struct net *net = dev_net(dev);
2765 struct sk_buff *skb;
2767 size_t if_info_size;
2769 skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags);
2773 err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0);
2775 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2776 WARN_ON(err == -EMSGSIZE);
2783 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
2787 void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags)
2789 struct net *net = dev_net(dev);
2791 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags);
2794 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change,
2797 struct sk_buff *skb;
2799 if (dev->reg_state != NETREG_REGISTERED)
2802 skb = rtmsg_ifinfo_build_skb(type, dev, change, flags);
2804 rtmsg_ifinfo_send(skb, dev, flags);
2806 EXPORT_SYMBOL(rtmsg_ifinfo);
2808 static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
2809 struct net_device *dev,
2810 u8 *addr, u16 vid, u32 pid, u32 seq,
2811 int type, unsigned int flags,
2812 int nlflags, u16 ndm_state)
2814 struct nlmsghdr *nlh;
2817 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags);
2821 ndm = nlmsg_data(nlh);
2822 ndm->ndm_family = AF_BRIDGE;
2825 ndm->ndm_flags = flags;
2827 ndm->ndm_ifindex = dev->ifindex;
2828 ndm->ndm_state = ndm_state;
2830 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
2831 goto nla_put_failure;
2833 if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid))
2834 goto nla_put_failure;
2836 nlmsg_end(skb, nlh);
2840 nlmsg_cancel(skb, nlh);
2844 static inline size_t rtnl_fdb_nlmsg_size(void)
2846 return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
2849 static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type,
2852 struct net *net = dev_net(dev);
2853 struct sk_buff *skb;
2856 skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC);
2860 err = nlmsg_populate_fdb_fill(skb, dev, addr, vid,
2861 0, 0, type, NTF_SELF, 0, ndm_state);
2867 rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
2870 rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
2874 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2876 int ndo_dflt_fdb_add(struct ndmsg *ndm,
2877 struct nlattr *tb[],
2878 struct net_device *dev,
2879 const unsigned char *addr, u16 vid,
2884 /* If aging addresses are supported device will need to
2885 * implement its own handler for this.
2887 if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
2888 pr_info("%s: FDB only supports static addresses\n", dev->name);
2893 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
2897 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
2898 err = dev_uc_add_excl(dev, addr);
2899 else if (is_multicast_ether_addr(addr))
2900 err = dev_mc_add_excl(dev, addr);
2902 /* Only return duplicate errors if NLM_F_EXCL is set */
2903 if (err == -EEXIST && !(flags & NLM_F_EXCL))
2908 EXPORT_SYMBOL(ndo_dflt_fdb_add);
2910 static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid)
2915 if (nla_len(vlan_attr) != sizeof(u16)) {
2916 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n");
2920 vid = nla_get_u16(vlan_attr);
2922 if (!vid || vid >= VLAN_VID_MASK) {
2923 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n",
2932 static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
2934 struct net *net = sock_net(skb->sk);
2936 struct nlattr *tb[NDA_MAX+1];
2937 struct net_device *dev;
2942 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
2946 ndm = nlmsg_data(nlh);
2947 if (ndm->ndm_ifindex == 0) {
2948 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2952 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
2954 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2958 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
2959 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2963 addr = nla_data(tb[NDA_LLADDR]);
2965 err = fdb_vid_parse(tb[NDA_VLAN], &vid);
2971 /* Support fdb on master device the net/bridge default case */
2972 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
2973 (dev->priv_flags & IFF_BRIDGE_PORT)) {
2974 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2975 const struct net_device_ops *ops = br_dev->netdev_ops;
2977 err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid,
2982 ndm->ndm_flags &= ~NTF_MASTER;
2985 /* Embedded bridge, macvlan, and any other device support */
2986 if ((ndm->ndm_flags & NTF_SELF)) {
2987 if (dev->netdev_ops->ndo_fdb_add)
2988 err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr,
2992 err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid,
2996 rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH,
2998 ndm->ndm_flags &= ~NTF_SELF;
3006 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
3008 int ndo_dflt_fdb_del(struct ndmsg *ndm,
3009 struct nlattr *tb[],
3010 struct net_device *dev,
3011 const unsigned char *addr, u16 vid)
3015 /* If aging addresses are supported device will need to
3016 * implement its own handler for this.
3018 if (!(ndm->ndm_state & NUD_PERMANENT)) {
3019 pr_info("%s: FDB only supports static addresses\n", dev->name);
3023 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
3024 err = dev_uc_del(dev, addr);
3025 else if (is_multicast_ether_addr(addr))
3026 err = dev_mc_del(dev, addr);
3030 EXPORT_SYMBOL(ndo_dflt_fdb_del);
3032 static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
3034 struct net *net = sock_net(skb->sk);
3036 struct nlattr *tb[NDA_MAX+1];
3037 struct net_device *dev;
3042 if (!netlink_capable(skb, CAP_NET_ADMIN))
3045 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
3049 ndm = nlmsg_data(nlh);
3050 if (ndm->ndm_ifindex == 0) {
3051 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
3055 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
3057 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
3061 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
3062 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
3066 addr = nla_data(tb[NDA_LLADDR]);
3068 err = fdb_vid_parse(tb[NDA_VLAN], &vid);
3074 /* Support fdb on master device the net/bridge default case */
3075 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
3076 (dev->priv_flags & IFF_BRIDGE_PORT)) {
3077 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3078 const struct net_device_ops *ops = br_dev->netdev_ops;
3080 if (ops->ndo_fdb_del)
3081 err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid);
3086 ndm->ndm_flags &= ~NTF_MASTER;
3089 /* Embedded bridge, macvlan, and any other device support */
3090 if (ndm->ndm_flags & NTF_SELF) {
3091 if (dev->netdev_ops->ndo_fdb_del)
3092 err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr,
3095 err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
3098 rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
3100 ndm->ndm_flags &= ~NTF_SELF;
3107 static int nlmsg_populate_fdb(struct sk_buff *skb,
3108 struct netlink_callback *cb,
3109 struct net_device *dev,
3111 struct netdev_hw_addr_list *list)
3113 struct netdev_hw_addr *ha;
3117 portid = NETLINK_CB(cb->skb).portid;
3118 seq = cb->nlh->nlmsg_seq;
3120 list_for_each_entry(ha, &list->list, list) {
3121 if (*idx < cb->args[2])
3124 err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0,
3126 RTM_NEWNEIGH, NTF_SELF,
3127 NLM_F_MULTI, NUD_PERMANENT);
3137 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
3138 * @nlh: netlink message header
3141 * Default netdevice operation to dump the existing unicast address list.
3142 * Returns number of addresses from list put in skb.
3144 int ndo_dflt_fdb_dump(struct sk_buff *skb,
3145 struct netlink_callback *cb,
3146 struct net_device *dev,
3147 struct net_device *filter_dev,
3152 netif_addr_lock_bh(dev);
3153 err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc);
3156 nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc);
3158 netif_addr_unlock_bh(dev);
3161 EXPORT_SYMBOL(ndo_dflt_fdb_dump);
3163 static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
3165 struct net_device *dev;
3166 struct nlattr *tb[IFLA_MAX+1];
3167 struct net_device *br_dev = NULL;
3168 const struct net_device_ops *ops = NULL;
3169 const struct net_device_ops *cops = NULL;
3170 struct ifinfomsg *ifm = nlmsg_data(cb->nlh);
3171 struct net *net = sock_net(skb->sk);
3172 struct hlist_head *head;
3180 if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
3181 ifla_policy) == 0) {
3182 if (tb[IFLA_MASTER])
3183 br_idx = nla_get_u32(tb[IFLA_MASTER]);
3186 brport_idx = ifm->ifi_index;
3189 br_dev = __dev_get_by_index(net, br_idx);
3193 ops = br_dev->netdev_ops;
3197 s_idx = cb->args[1];
3199 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
3201 head = &net->dev_index_head[h];
3202 hlist_for_each_entry(dev, head, index_hlist) {
3204 if (brport_idx && (dev->ifindex != brport_idx))
3207 if (!br_idx) { /* user did not specify a specific bridge */
3208 if (dev->priv_flags & IFF_BRIDGE_PORT) {
3209 br_dev = netdev_master_upper_dev_get(dev);
3210 cops = br_dev->netdev_ops;
3213 if (dev != br_dev &&
3214 !(dev->priv_flags & IFF_BRIDGE_PORT))
3217 if (br_dev != netdev_master_upper_dev_get(dev) &&
3218 !(dev->priv_flags & IFF_EBRIDGE))
3226 if (dev->priv_flags & IFF_BRIDGE_PORT) {
3227 if (cops && cops->ndo_fdb_dump) {
3228 err = cops->ndo_fdb_dump(skb, cb,
3231 if (err == -EMSGSIZE)
3236 if (dev->netdev_ops->ndo_fdb_dump)
3237 err = dev->netdev_ops->ndo_fdb_dump(skb, cb,
3241 err = ndo_dflt_fdb_dump(skb, cb, dev, NULL,
3243 if (err == -EMSGSIZE)
3248 /* reset fdb offset to 0 for rest of the interfaces */
3264 static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask,
3265 unsigned int attrnum, unsigned int flag)
3268 return nla_put_u8(skb, attrnum, !!(flags & flag));
3272 int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
3273 struct net_device *dev, u16 mode,
3274 u32 flags, u32 mask, int nlflags,
3276 int (*vlan_fill)(struct sk_buff *skb,
3277 struct net_device *dev,
3280 struct nlmsghdr *nlh;
3281 struct ifinfomsg *ifm;
3282 struct nlattr *br_afspec;
3283 struct nlattr *protinfo;
3284 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
3285 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3288 nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags);
3292 ifm = nlmsg_data(nlh);
3293 ifm->ifi_family = AF_BRIDGE;
3295 ifm->ifi_type = dev->type;
3296 ifm->ifi_index = dev->ifindex;
3297 ifm->ifi_flags = dev_get_flags(dev);
3298 ifm->ifi_change = 0;
3301 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
3302 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
3303 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
3305 nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) ||
3307 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
3308 (dev->ifindex != dev_get_iflink(dev) &&
3309 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
3310 goto nla_put_failure;
3312 br_afspec = nla_nest_start(skb, IFLA_AF_SPEC);
3314 goto nla_put_failure;
3316 if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) {
3317 nla_nest_cancel(skb, br_afspec);
3318 goto nla_put_failure;
3321 if (mode != BRIDGE_MODE_UNDEF) {
3322 if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) {
3323 nla_nest_cancel(skb, br_afspec);
3324 goto nla_put_failure;
3328 err = vlan_fill(skb, dev, filter_mask);
3330 nla_nest_cancel(skb, br_afspec);
3331 goto nla_put_failure;
3334 nla_nest_end(skb, br_afspec);
3336 protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
3338 goto nla_put_failure;
3340 if (brport_nla_put_flag(skb, flags, mask,
3341 IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) ||
3342 brport_nla_put_flag(skb, flags, mask,
3343 IFLA_BRPORT_GUARD, BR_BPDU_GUARD) ||
3344 brport_nla_put_flag(skb, flags, mask,
3345 IFLA_BRPORT_FAST_LEAVE,
3346 BR_MULTICAST_FAST_LEAVE) ||
3347 brport_nla_put_flag(skb, flags, mask,
3348 IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) ||
3349 brport_nla_put_flag(skb, flags, mask,
3350 IFLA_BRPORT_LEARNING, BR_LEARNING) ||
3351 brport_nla_put_flag(skb, flags, mask,
3352 IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) ||
3353 brport_nla_put_flag(skb, flags, mask,
3354 IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) ||
3355 brport_nla_put_flag(skb, flags, mask,
3356 IFLA_BRPORT_PROXYARP, BR_PROXYARP)) {
3357 nla_nest_cancel(skb, protinfo);
3358 goto nla_put_failure;
3361 nla_nest_end(skb, protinfo);
3363 nlmsg_end(skb, nlh);
3366 nlmsg_cancel(skb, nlh);
3367 return err ? err : -EMSGSIZE;
3369 EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink);
3371 static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
3373 struct net *net = sock_net(skb->sk);
3374 struct net_device *dev;
3376 u32 portid = NETLINK_CB(cb->skb).portid;
3377 u32 seq = cb->nlh->nlmsg_seq;
3378 u32 filter_mask = 0;
3381 if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) {
3382 struct nlattr *extfilt;
3384 extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg),
3387 if (nla_len(extfilt) < sizeof(filter_mask))
3390 filter_mask = nla_get_u32(extfilt);
3395 for_each_netdev_rcu(net, dev) {
3396 const struct net_device_ops *ops = dev->netdev_ops;
3397 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3399 if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
3400 if (idx >= cb->args[0]) {
3401 err = br_dev->netdev_ops->ndo_bridge_getlink(
3402 skb, portid, seq, dev,
3403 filter_mask, NLM_F_MULTI);
3404 if (err < 0 && err != -EOPNOTSUPP)
3410 if (ops->ndo_bridge_getlink) {
3411 if (idx >= cb->args[0]) {
3412 err = ops->ndo_bridge_getlink(skb, portid,
3416 if (err < 0 && err != -EOPNOTSUPP)
3428 static inline size_t bridge_nlmsg_size(void)
3430 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
3431 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
3432 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
3433 + nla_total_size(sizeof(u32)) /* IFLA_MASTER */
3434 + nla_total_size(sizeof(u32)) /* IFLA_MTU */
3435 + nla_total_size(sizeof(u32)) /* IFLA_LINK */
3436 + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */
3437 + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */
3438 + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */
3439 + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */
3440 + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */
3443 static int rtnl_bridge_notify(struct net_device *dev)
3445 struct net *net = dev_net(dev);
3446 struct sk_buff *skb;
3447 int err = -EOPNOTSUPP;
3449 if (!dev->netdev_ops->ndo_bridge_getlink)
3452 skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC);
3458 err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0);
3465 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
3468 WARN_ON(err == -EMSGSIZE);
3471 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
3475 static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
3477 struct net *net = sock_net(skb->sk);
3478 struct ifinfomsg *ifm;
3479 struct net_device *dev;
3480 struct nlattr *br_spec, *attr = NULL;
3481 int rem, err = -EOPNOTSUPP;
3483 bool have_flags = false;
3485 if (nlmsg_len(nlh) < sizeof(*ifm))
3488 ifm = nlmsg_data(nlh);
3489 if (ifm->ifi_family != AF_BRIDGE)
3490 return -EPFNOSUPPORT;
3492 dev = __dev_get_by_index(net, ifm->ifi_index);
3494 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3498 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3500 nla_for_each_nested(attr, br_spec, rem) {
3501 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
3502 if (nla_len(attr) < sizeof(flags))
3506 flags = nla_get_u16(attr);
3512 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
3513 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3515 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) {
3520 err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags);
3524 flags &= ~BRIDGE_FLAGS_MASTER;
3527 if ((flags & BRIDGE_FLAGS_SELF)) {
3528 if (!dev->netdev_ops->ndo_bridge_setlink)
3531 err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh,
3534 flags &= ~BRIDGE_FLAGS_SELF;
3536 /* Generate event to notify upper layer of bridge
3539 err = rtnl_bridge_notify(dev);
3544 memcpy(nla_data(attr), &flags, sizeof(flags));
3549 static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
3551 struct net *net = sock_net(skb->sk);
3552 struct ifinfomsg *ifm;
3553 struct net_device *dev;
3554 struct nlattr *br_spec, *attr = NULL;
3555 int rem, err = -EOPNOTSUPP;
3557 bool have_flags = false;
3559 if (nlmsg_len(nlh) < sizeof(*ifm))
3562 ifm = nlmsg_data(nlh);
3563 if (ifm->ifi_family != AF_BRIDGE)
3564 return -EPFNOSUPPORT;
3566 dev = __dev_get_by_index(net, ifm->ifi_index);
3568 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3572 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3574 nla_for_each_nested(attr, br_spec, rem) {
3575 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
3576 if (nla_len(attr) < sizeof(flags))
3580 flags = nla_get_u16(attr);
3586 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
3587 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3589 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) {
3594 err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags);
3598 flags &= ~BRIDGE_FLAGS_MASTER;
3601 if ((flags & BRIDGE_FLAGS_SELF)) {
3602 if (!dev->netdev_ops->ndo_bridge_dellink)
3605 err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh,
3609 flags &= ~BRIDGE_FLAGS_SELF;
3611 /* Generate event to notify upper layer of bridge
3614 err = rtnl_bridge_notify(dev);
3619 memcpy(nla_data(attr), &flags, sizeof(flags));
3624 static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr)
3626 return (mask & IFLA_STATS_FILTER_BIT(attrid)) &&
3627 (!idxattr || idxattr == attrid);
3630 #define IFLA_OFFLOAD_XSTATS_FIRST (IFLA_OFFLOAD_XSTATS_UNSPEC + 1)
3631 static int rtnl_get_offload_stats_attr_size(int attr_id)
3634 case IFLA_OFFLOAD_XSTATS_CPU_HIT:
3635 return sizeof(struct rtnl_link_stats64);
3641 static int rtnl_get_offload_stats(struct sk_buff *skb, struct net_device *dev,
3644 struct nlattr *attr = NULL;
3649 if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats &&
3650 dev->netdev_ops->ndo_get_offload_stats))
3653 for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST;
3654 attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) {
3655 if (attr_id < *prividx)
3658 size = rtnl_get_offload_stats_attr_size(attr_id);
3662 if (!dev->netdev_ops->ndo_has_offload_stats(attr_id))
3665 attr = nla_reserve_64bit(skb, attr_id, size,
3666 IFLA_OFFLOAD_XSTATS_UNSPEC);
3668 goto nla_put_failure;
3670 attr_data = nla_data(attr);
3671 memset(attr_data, 0, size);
3672 err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev,
3675 goto get_offload_stats_failure;
3686 get_offload_stats_failure:
3691 static int rtnl_get_offload_stats_size(const struct net_device *dev)
3697 if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats &&
3698 dev->netdev_ops->ndo_get_offload_stats))
3701 for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST;
3702 attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) {
3703 if (!dev->netdev_ops->ndo_has_offload_stats(attr_id))
3705 size = rtnl_get_offload_stats_attr_size(attr_id);
3706 nla_size += nla_total_size_64bit(size);
3710 nla_size += nla_total_size(0);
3715 static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev,
3716 int type, u32 pid, u32 seq, u32 change,
3717 unsigned int flags, unsigned int filter_mask,
3718 int *idxattr, int *prividx)
3720 struct if_stats_msg *ifsm;
3721 struct nlmsghdr *nlh;
3722 struct nlattr *attr;
3723 int s_prividx = *prividx;
3728 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags);
3732 ifsm = nlmsg_data(nlh);
3733 ifsm->ifindex = dev->ifindex;
3734 ifsm->filter_mask = filter_mask;
3736 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) {
3737 struct rtnl_link_stats64 *sp;
3739 attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64,
3740 sizeof(struct rtnl_link_stats64),
3743 goto nla_put_failure;
3745 sp = nla_data(attr);
3746 dev_get_stats(dev, sp);
3749 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) {
3750 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
3752 if (ops && ops->fill_linkxstats) {
3753 *idxattr = IFLA_STATS_LINK_XSTATS;
3754 attr = nla_nest_start(skb,
3755 IFLA_STATS_LINK_XSTATS);
3757 goto nla_put_failure;
3759 err = ops->fill_linkxstats(skb, dev, prividx, *idxattr);
3760 nla_nest_end(skb, attr);
3762 goto nla_put_failure;
3767 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE,
3769 const struct rtnl_link_ops *ops = NULL;
3770 const struct net_device *master;
3772 master = netdev_master_upper_dev_get(dev);
3774 ops = master->rtnl_link_ops;
3775 if (ops && ops->fill_linkxstats) {
3776 *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE;
3777 attr = nla_nest_start(skb,
3778 IFLA_STATS_LINK_XSTATS_SLAVE);
3780 goto nla_put_failure;
3782 err = ops->fill_linkxstats(skb, dev, prividx, *idxattr);
3783 nla_nest_end(skb, attr);
3785 goto nla_put_failure;
3790 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS,
3792 *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS;
3793 attr = nla_nest_start(skb, IFLA_STATS_LINK_OFFLOAD_XSTATS);
3795 goto nla_put_failure;
3797 err = rtnl_get_offload_stats(skb, dev, prividx);
3798 if (err == -ENODATA)
3799 nla_nest_cancel(skb, attr);
3801 nla_nest_end(skb, attr);
3803 if (err && err != -ENODATA)
3804 goto nla_put_failure;
3808 nlmsg_end(skb, nlh);
3813 /* not a multi message or no progress mean a real error */
3814 if (!(flags & NLM_F_MULTI) || s_prividx == *prividx)
3815 nlmsg_cancel(skb, nlh);
3817 nlmsg_end(skb, nlh);
3822 static size_t if_nlmsg_stats_size(const struct net_device *dev,
3827 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0))
3828 size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64));
3830 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) {
3831 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
3832 int attr = IFLA_STATS_LINK_XSTATS;
3834 if (ops && ops->get_linkxstats_size) {
3835 size += nla_total_size(ops->get_linkxstats_size(dev,
3837 /* for IFLA_STATS_LINK_XSTATS */
3838 size += nla_total_size(0);
3842 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) {
3843 struct net_device *_dev = (struct net_device *)dev;
3844 const struct rtnl_link_ops *ops = NULL;
3845 const struct net_device *master;
3847 /* netdev_master_upper_dev_get can't take const */
3848 master = netdev_master_upper_dev_get(_dev);
3850 ops = master->rtnl_link_ops;
3851 if (ops && ops->get_linkxstats_size) {
3852 int attr = IFLA_STATS_LINK_XSTATS_SLAVE;
3854 size += nla_total_size(ops->get_linkxstats_size(dev,
3856 /* for IFLA_STATS_LINK_XSTATS_SLAVE */
3857 size += nla_total_size(0);
3861 if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0))
3862 size += rtnl_get_offload_stats_size(dev);
3867 static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh)
3869 struct net *net = sock_net(skb->sk);
3870 struct net_device *dev = NULL;
3871 int idxattr = 0, prividx = 0;
3872 struct if_stats_msg *ifsm;
3873 struct sk_buff *nskb;
3877 ifsm = nlmsg_data(nlh);
3878 if (ifsm->ifindex > 0)
3879 dev = __dev_get_by_index(net, ifsm->ifindex);
3886 filter_mask = ifsm->filter_mask;
3890 nskb = nlmsg_new(if_nlmsg_stats_size(dev, filter_mask), GFP_KERNEL);
3894 err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS,
3895 NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0,
3896 0, filter_mask, &idxattr, &prividx);
3898 /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */
3899 WARN_ON(err == -EMSGSIZE);
3902 err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid);
3908 static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb)
3910 int h, s_h, err, s_idx, s_idxattr, s_prividx;
3911 struct net *net = sock_net(skb->sk);
3912 unsigned int flags = NLM_F_MULTI;
3913 struct if_stats_msg *ifsm;
3914 struct hlist_head *head;
3915 struct net_device *dev;
3916 u32 filter_mask = 0;
3920 s_idx = cb->args[1];
3921 s_idxattr = cb->args[2];
3922 s_prividx = cb->args[3];
3924 cb->seq = net->dev_base_seq;
3926 ifsm = nlmsg_data(cb->nlh);
3927 filter_mask = ifsm->filter_mask;
3931 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
3933 head = &net->dev_index_head[h];
3934 hlist_for_each_entry(dev, head, index_hlist) {
3937 err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS,
3938 NETLINK_CB(cb->skb).portid,
3939 cb->nlh->nlmsg_seq, 0,
3941 &s_idxattr, &s_prividx);
3942 /* If we ran out of room on the first message,
3945 WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
3951 nl_dump_check_consistent(cb, nlmsg_hdr(skb));
3957 cb->args[3] = s_prividx;
3958 cb->args[2] = s_idxattr;
3965 /* Process one rtnetlink message. */
3967 static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
3969 struct net *net = sock_net(skb->sk);
3970 rtnl_doit_func doit;
3976 type = nlh->nlmsg_type;
3982 /* All the messages must have at least 1 byte length */
3983 if (nlmsg_len(nlh) < sizeof(struct rtgenmsg))
3986 family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family;
3989 if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN))
3992 if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
3994 rtnl_dumpit_func dumpit;
3995 rtnl_calcit_func calcit;
3996 u16 min_dump_alloc = 0;
3998 dumpit = rtnl_get_dumpit(family, type);
4001 calcit = rtnl_get_calcit(family, type);
4003 min_dump_alloc = calcit(skb, nlh);
4008 struct netlink_dump_control c = {
4010 .min_dump_alloc = min_dump_alloc,
4012 err = netlink_dump_start(rtnl, skb, nlh, &c);
4018 doit = rtnl_get_doit(family, type);
4022 return doit(skb, nlh);
4025 static void rtnetlink_rcv(struct sk_buff *skb)
4028 netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
4032 static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
4034 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4040 case NETDEV_POST_INIT:
4041 case NETDEV_REGISTER:
4043 case NETDEV_PRE_TYPE_CHANGE:
4044 case NETDEV_GOING_DOWN:
4045 case NETDEV_UNREGISTER:
4046 case NETDEV_UNREGISTER_FINAL:
4047 case NETDEV_RELEASE:
4049 case NETDEV_BONDING_INFO:
4052 rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL);
4058 static struct notifier_block rtnetlink_dev_notifier = {
4059 .notifier_call = rtnetlink_event,
4063 static int __net_init rtnetlink_net_init(struct net *net)
4066 struct netlink_kernel_cfg cfg = {
4067 .groups = RTNLGRP_MAX,
4068 .input = rtnetlink_rcv,
4069 .cb_mutex = &rtnl_mutex,
4070 .flags = NL_CFG_F_NONROOT_RECV,
4073 sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg);
4080 static void __net_exit rtnetlink_net_exit(struct net *net)
4082 netlink_kernel_release(net->rtnl);
4086 static struct pernet_operations rtnetlink_net_ops = {
4087 .init = rtnetlink_net_init,
4088 .exit = rtnetlink_net_exit,
4091 void __init rtnetlink_init(void)
4093 if (register_pernet_subsys(&rtnetlink_net_ops))
4094 panic("rtnetlink_init: cannot initialize rtnetlink\n");
4096 register_netdevice_notifier(&rtnetlink_dev_notifier);
4098 rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink,
4099 rtnl_dump_ifinfo, rtnl_calcit);
4100 rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL);
4101 rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL);
4102 rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL);
4104 rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL);
4105 rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL);
4107 rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL);
4108 rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL);
4109 rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL);
4111 rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL);
4112 rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL);
4113 rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL);
4115 rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump,