2 * Linux ethernet bridge
5 * Lennert Buytenhek <buytenh@gnu.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
16 #include <linux/netdevice.h>
17 #include <linux/if_bridge.h>
18 #include <linux/netpoll.h>
19 #include <linux/u64_stats_sync.h>
20 #include <net/route.h>
21 #include <linux/if_vlan.h>
23 #define BR_HASH_BITS 8
24 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
26 #define BR_HOLD_TIME (1*HZ)
28 #define BR_PORT_BITS 10
29 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30 #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
32 #define BR_VERSION "2.3"
34 /* Control of forwarding link local multicast */
35 #define BR_GROUPFWD_DEFAULT 0
36 /* Don't allow forwarding control protocols like STP and LLDP */
37 #define BR_GROUPFWD_RESTRICTED 0x4007u
38 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
39 #define BR_GROUPFWD_8021AD 0xB801u
41 /* Path to usermode spanning tree program */
42 #define BR_STP_PROG "/sbin/bridge-stp"
44 typedef struct bridge_id bridge_id;
45 typedef struct mac_addr mac_addr;
46 typedef __u16 port_id;
50 unsigned char prio[2];
51 unsigned char addr[ETH_ALEN];
56 unsigned char addr[ETH_ALEN];
59 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
61 struct bridge_mcast_own_query {
62 struct timer_list timer;
67 struct bridge_mcast_other_query {
68 struct timer_list timer;
69 unsigned long delay_time;
72 /* selected querier */
73 struct bridge_mcast_querier {
75 struct net_bridge_port __rcu *port;
79 struct net_port_vlans {
83 struct net_bridge_port *port;
84 struct net_bridge *br;
87 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
88 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
92 struct net_bridge_fdb_entry
94 struct hlist_node hlist;
95 struct net_bridge_port *dst;
98 unsigned long updated;
101 unsigned char is_local:1,
104 added_by_external_learn:1;
108 struct net_bridge_port_group {
109 struct net_bridge_port *port;
110 struct net_bridge_port_group __rcu *next;
111 struct hlist_node mglist;
113 struct timer_list timer;
118 struct net_bridge_mdb_entry
120 struct hlist_node hlist[2];
121 struct net_bridge *br;
122 struct net_bridge_port_group __rcu *ports;
124 struct timer_list timer;
129 struct net_bridge_mdb_htable
131 struct hlist_head *mhash;
133 struct net_bridge_mdb_htable *old;
140 struct net_bridge_port
142 struct net_bridge *br;
143 struct net_device *dev;
144 struct list_head list;
150 unsigned char topology_change_ack;
151 unsigned char config_pending;
153 port_id designated_port;
154 bridge_id designated_root;
155 bridge_id designated_bridge;
158 unsigned long designated_age;
160 struct timer_list forward_delay_timer;
161 struct timer_list hold_timer;
162 struct timer_list message_age_timer;
167 #define BR_HAIRPIN_MODE 0x00000001
168 #define BR_BPDU_GUARD 0x00000002
169 #define BR_ROOT_BLOCK 0x00000004
170 #define BR_MULTICAST_FAST_LEAVE 0x00000008
171 #define BR_ADMIN_COST 0x00000010
172 #define BR_LEARNING 0x00000020
173 #define BR_FLOOD 0x00000040
174 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
175 #define BR_PROMISC 0x00000080
176 #define BR_PROXYARP 0x00000100
178 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
179 struct bridge_mcast_own_query ip4_own_query;
180 #if IS_ENABLED(CONFIG_IPV6)
181 struct bridge_mcast_own_query ip6_own_query;
182 #endif /* IS_ENABLED(CONFIG_IPV6) */
183 unsigned char multicast_router;
184 struct timer_list multicast_router_timer;
185 struct hlist_head mglist;
186 struct hlist_node rlist;
190 char sysfs_name[IFNAMSIZ];
193 #ifdef CONFIG_NET_POLL_CONTROLLER
196 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
197 struct net_port_vlans __rcu *vlan_info;
201 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
202 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
204 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
206 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
208 return rcu_dereference(dev->rx_handler_data);
211 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
213 return br_port_exists(dev) ?
214 rtnl_dereference(dev->rx_handler_data) : NULL;
220 struct list_head port_list;
221 struct net_device *dev;
223 struct pcpu_sw_netstats __percpu *stats;
224 spinlock_t hash_lock;
225 struct hlist_head hash[BR_HASH_SIZE];
226 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
227 struct rtable fake_rtable;
228 bool nf_call_iptables;
229 bool nf_call_ip6tables;
230 bool nf_call_arptables;
233 u16 group_fwd_mask_required;
236 bridge_id designated_root;
239 unsigned long max_age;
240 unsigned long hello_time;
241 unsigned long forward_delay;
242 unsigned long bridge_max_age;
243 unsigned long ageing_time;
244 unsigned long bridge_hello_time;
245 unsigned long bridge_forward_delay;
247 u8 group_addr[ETH_ALEN];
252 BR_NO_STP, /* no spanning tree */
253 BR_KERNEL_STP, /* old STP in kernel */
254 BR_USER_STP, /* new RSTP in userspace */
257 unsigned char topology_change;
258 unsigned char topology_change_detected;
260 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
261 unsigned char multicast_router;
263 u8 multicast_disabled:1;
264 u8 multicast_querier:1;
265 u8 multicast_query_use_ifaddr:1;
270 u32 multicast_last_member_count;
271 u32 multicast_startup_query_count;
273 unsigned long multicast_last_member_interval;
274 unsigned long multicast_membership_interval;
275 unsigned long multicast_querier_interval;
276 unsigned long multicast_query_interval;
277 unsigned long multicast_query_response_interval;
278 unsigned long multicast_startup_query_interval;
280 spinlock_t multicast_lock;
281 struct net_bridge_mdb_htable __rcu *mdb;
282 struct hlist_head router_list;
284 struct timer_list multicast_router_timer;
285 struct bridge_mcast_other_query ip4_other_query;
286 struct bridge_mcast_own_query ip4_own_query;
287 struct bridge_mcast_querier ip4_querier;
288 #if IS_ENABLED(CONFIG_IPV6)
289 struct bridge_mcast_other_query ip6_other_query;
290 struct bridge_mcast_own_query ip6_own_query;
291 struct bridge_mcast_querier ip6_querier;
292 #endif /* IS_ENABLED(CONFIG_IPV6) */
295 struct timer_list hello_timer;
296 struct timer_list tcn_timer;
297 struct timer_list topology_change_timer;
298 struct timer_list gc_timer;
299 struct kobject *ifobj;
301 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
305 struct net_port_vlans __rcu *vlan_info;
309 struct br_input_skb_cb {
310 struct net_device *brdev;
312 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
319 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
324 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
326 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
327 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
329 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
332 #define br_printk(level, br, format, args...) \
333 printk(level "%s: " format, (br)->dev->name, ##args)
335 #define br_err(__br, format, args...) \
336 br_printk(KERN_ERR, __br, format, ##args)
337 #define br_warn(__br, format, args...) \
338 br_printk(KERN_WARNING, __br, format, ##args)
339 #define br_notice(__br, format, args...) \
340 br_printk(KERN_NOTICE, __br, format, ##args)
341 #define br_info(__br, format, args...) \
342 br_printk(KERN_INFO, __br, format, ##args)
344 #define br_debug(br, format, args...) \
345 pr_debug("%s: " format, (br)->dev->name, ##args)
347 /* called under bridge lock */
348 static inline int br_is_root_bridge(const struct net_bridge *br)
350 return !memcmp(&br->bridge_id, &br->designated_root, 8);
354 void br_dev_setup(struct net_device *dev);
355 void br_dev_delete(struct net_device *dev, struct list_head *list);
356 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
357 #ifdef CONFIG_NET_POLL_CONTROLLER
358 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
361 struct netpoll *np = p->np;
364 netpoll_send_skb(np, skb);
367 int br_netpoll_enable(struct net_bridge_port *p);
368 void br_netpoll_disable(struct net_bridge_port *p);
370 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
375 static inline int br_netpoll_enable(struct net_bridge_port *p)
380 static inline void br_netpoll_disable(struct net_bridge_port *p)
386 int br_fdb_init(void);
387 void br_fdb_fini(void);
388 void br_fdb_flush(struct net_bridge *br);
389 void br_fdb_find_delete_local(struct net_bridge *br,
390 const struct net_bridge_port *p,
391 const unsigned char *addr, u16 vid);
392 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
393 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
394 void br_fdb_cleanup(unsigned long arg);
395 void br_fdb_delete_by_port(struct net_bridge *br,
396 const struct net_bridge_port *p, int do_all);
397 struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
398 const unsigned char *addr, __u16 vid);
399 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
400 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
402 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
403 const unsigned char *addr, u16 vid);
404 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
405 const unsigned char *addr, u16 vid, bool added_by_user);
407 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
408 struct net_device *dev, const unsigned char *addr, u16 vid);
409 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
410 const unsigned char *addr, u16 vid, u16 nlh_flags);
411 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
412 struct net_device *dev, struct net_device *fdev, int idx);
413 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
414 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
417 void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
418 int br_dev_queue_push_xmit(struct sk_buff *skb);
419 void br_forward(const struct net_bridge_port *to,
420 struct sk_buff *skb, struct sk_buff *skb0);
421 int br_forward_finish(struct sk_buff *skb);
422 void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
423 void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
424 struct sk_buff *skb2, bool unicast);
427 void br_port_carrier_check(struct net_bridge_port *p);
428 int br_add_bridge(struct net *net, const char *name);
429 int br_del_bridge(struct net *net, const char *name);
430 int br_add_if(struct net_bridge *br, struct net_device *dev);
431 int br_del_if(struct net_bridge *br, struct net_device *dev);
432 int br_min_mtu(const struct net_bridge *br);
433 netdev_features_t br_features_recompute(struct net_bridge *br,
434 netdev_features_t features);
435 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
436 void br_manage_promisc(struct net_bridge *br);
439 int br_handle_frame_finish(struct sk_buff *skb);
440 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
442 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
444 return rcu_dereference(dev->rx_handler) == br_handle_frame;
447 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
449 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
453 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
454 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
458 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
459 extern unsigned int br_mdb_rehash_seq;
460 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
461 struct sk_buff *skb, u16 vid);
462 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
463 struct sk_buff *skb, u16 vid);
464 void br_multicast_add_port(struct net_bridge_port *port);
465 void br_multicast_del_port(struct net_bridge_port *port);
466 void br_multicast_enable_port(struct net_bridge_port *port);
467 void br_multicast_disable_port(struct net_bridge_port *port);
468 void br_multicast_init(struct net_bridge *br);
469 void br_multicast_open(struct net_bridge *br);
470 void br_multicast_stop(struct net_bridge *br);
471 void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
472 struct sk_buff *skb);
473 void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
474 struct sk_buff *skb, struct sk_buff *skb2);
475 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
476 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
477 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
478 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
479 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
480 struct net_bridge_mdb_entry *
481 br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
482 struct net_bridge_mdb_entry *
483 br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
484 struct br_ip *group);
485 void br_multicast_free_pg(struct rcu_head *head);
486 struct net_bridge_port_group *
487 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
488 struct net_bridge_port_group __rcu *next,
489 unsigned char state);
490 void br_mdb_init(void);
491 void br_mdb_uninit(void);
492 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
493 struct br_ip *group, int type);
495 #define mlock_dereference(X, br) \
496 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
498 static inline bool br_multicast_is_router(struct net_bridge *br)
500 return br->multicast_router == 2 ||
501 (br->multicast_router == 1 &&
502 timer_pending(&br->multicast_router_timer));
506 __br_multicast_querier_exists(struct net_bridge *br,
507 struct bridge_mcast_other_query *querier)
509 return time_is_before_jiffies(querier->delay_time) &&
510 (br->multicast_querier || timer_pending(&querier->timer));
513 static inline bool br_multicast_querier_exists(struct net_bridge *br,
516 switch (eth->h_proto) {
517 case (htons(ETH_P_IP)):
518 return __br_multicast_querier_exists(br, &br->ip4_other_query);
519 #if IS_ENABLED(CONFIG_IPV6)
520 case (htons(ETH_P_IPV6)):
521 return __br_multicast_querier_exists(br, &br->ip6_other_query);
528 static inline int br_multicast_rcv(struct net_bridge *br,
529 struct net_bridge_port *port,
536 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
537 struct sk_buff *skb, u16 vid)
542 static inline void br_multicast_add_port(struct net_bridge_port *port)
546 static inline void br_multicast_del_port(struct net_bridge_port *port)
550 static inline void br_multicast_enable_port(struct net_bridge_port *port)
554 static inline void br_multicast_disable_port(struct net_bridge_port *port)
558 static inline void br_multicast_init(struct net_bridge *br)
562 static inline void br_multicast_open(struct net_bridge *br)
566 static inline void br_multicast_stop(struct net_bridge *br)
570 static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
575 static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
577 struct sk_buff *skb2)
580 static inline bool br_multicast_is_router(struct net_bridge *br)
584 static inline bool br_multicast_querier_exists(struct net_bridge *br,
589 static inline void br_mdb_init(void)
592 static inline void br_mdb_uninit(void)
598 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
599 bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
600 struct sk_buff *skb, u16 *vid);
601 bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
602 const struct sk_buff *skb);
603 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
604 struct sk_buff *br_handle_vlan(struct net_bridge *br,
605 const struct net_port_vlans *v,
606 struct sk_buff *skb);
607 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
608 int br_vlan_delete(struct net_bridge *br, u16 vid);
609 void br_vlan_flush(struct net_bridge *br);
610 bool br_vlan_find(struct net_bridge *br, u16 vid);
611 void br_recalculate_fwd_mask(struct net_bridge *br);
612 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
613 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
614 int br_vlan_init(struct net_bridge *br);
615 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
616 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
617 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
618 void nbp_vlan_flush(struct net_bridge_port *port);
619 bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
620 int nbp_vlan_init(struct net_bridge_port *port);
622 static inline struct net_port_vlans *br_get_vlan_info(
623 const struct net_bridge *br)
625 return rcu_dereference_rtnl(br->vlan_info);
628 static inline struct net_port_vlans *nbp_get_vlan_info(
629 const struct net_bridge_port *p)
631 return rcu_dereference_rtnl(p->vlan_info);
634 /* Since bridge now depends on 8021Q module, but the time bridge sees the
635 * skb, the vlan tag will always be present if the frame was tagged.
637 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
641 if (vlan_tx_tag_present(skb))
642 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
651 static inline u16 br_get_pvid(const struct net_port_vlans *v)
660 static inline int br_vlan_enabled(struct net_bridge *br)
662 return br->vlan_enabled;
665 static inline bool br_allowed_ingress(struct net_bridge *br,
666 struct net_port_vlans *v,
673 static inline bool br_allowed_egress(struct net_bridge *br,
674 const struct net_port_vlans *v,
675 const struct sk_buff *skb)
680 static inline bool br_should_learn(struct net_bridge_port *p,
681 struct sk_buff *skb, u16 *vid)
686 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
687 const struct net_port_vlans *v,
693 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
698 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
703 static inline void br_vlan_flush(struct net_bridge *br)
707 static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
712 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
716 static inline int br_vlan_init(struct net_bridge *br)
721 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
726 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
731 static inline void nbp_vlan_flush(struct net_bridge_port *port)
735 static inline struct net_port_vlans *br_get_vlan_info(
736 const struct net_bridge *br)
740 static inline struct net_port_vlans *nbp_get_vlan_info(
741 const struct net_bridge_port *p)
746 static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
751 static inline int nbp_vlan_init(struct net_bridge_port *port)
756 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
760 static inline u16 br_get_pvid(const struct net_port_vlans *v)
765 static inline int br_vlan_enabled(struct net_bridge *br)
772 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
773 int br_nf_core_init(void);
774 void br_nf_core_fini(void);
775 void br_netfilter_rtable_init(struct net_bridge *);
777 static inline int br_nf_core_init(void) { return 0; }
778 static inline void br_nf_core_fini(void) {}
779 #define br_netfilter_rtable_init(x)
783 void br_log_state(const struct net_bridge_port *p);
784 void br_set_state(struct net_bridge_port *p, unsigned int state);
785 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
786 void br_init_port(struct net_bridge_port *p);
787 void br_become_designated_port(struct net_bridge_port *p);
789 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
790 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
791 int br_set_hello_time(struct net_bridge *br, unsigned long x);
792 int br_set_max_age(struct net_bridge *br, unsigned long x);
796 void br_stp_enable_bridge(struct net_bridge *br);
797 void br_stp_disable_bridge(struct net_bridge *br);
798 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
799 void br_stp_enable_port(struct net_bridge_port *p);
800 void br_stp_disable_port(struct net_bridge_port *p);
801 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
802 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
803 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
804 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
805 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
806 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
810 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
811 struct net_device *dev);
814 void br_stp_timer_init(struct net_bridge *br);
815 void br_stp_port_timer_init(struct net_bridge_port *p);
816 unsigned long br_timer_value(const struct timer_list *timer);
819 #if IS_ENABLED(CONFIG_ATM_LANE)
820 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
824 extern struct rtnl_link_ops br_link_ops;
825 int br_netlink_init(void);
826 void br_netlink_fini(void);
827 void br_ifinfo_notify(int event, struct net_bridge_port *port);
828 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
829 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
830 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
835 extern const struct sysfs_ops brport_sysfs_ops;
836 int br_sysfs_addif(struct net_bridge_port *p);
837 int br_sysfs_renameif(struct net_bridge_port *p);
840 int br_sysfs_addbr(struct net_device *dev);
841 void br_sysfs_delbr(struct net_device *dev);
845 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
846 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
847 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
848 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
849 #endif /* CONFIG_SYSFS */