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 <net/ip6_fib.h>
22 #include <linux/if_vlan.h>
23 #include <linux/rhashtable.h>
25 #define BR_HASH_BITS 8
26 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
28 #define BR_HOLD_TIME (1*HZ)
30 #define BR_PORT_BITS 10
31 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
33 #define BR_VERSION "2.3"
35 /* Control of forwarding link local multicast */
36 #define BR_GROUPFWD_DEFAULT 0
37 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
38 #define BR_GROUPFWD_RESTRICTED 0x0007u
39 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
40 #define BR_GROUPFWD_8021AD 0xB801u
42 /* Path to usermode spanning tree program */
43 #define BR_STP_PROG "/sbin/bridge-stp"
45 typedef struct bridge_id bridge_id;
46 typedef struct mac_addr mac_addr;
47 typedef __u16 port_id;
51 unsigned char prio[2];
52 unsigned char addr[ETH_ALEN];
57 unsigned char addr[ETH_ALEN];
60 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
62 struct bridge_mcast_own_query {
63 struct timer_list timer;
68 struct bridge_mcast_other_query {
69 struct timer_list timer;
70 unsigned long delay_time;
73 /* selected querier */
74 struct bridge_mcast_querier {
76 struct net_bridge_port __rcu *port;
80 struct br_vlan_stats {
85 struct u64_stats_sync syncp;
89 * struct net_bridge_vlan - per-vlan entry
91 * @vnode: rhashtable member
93 * @flags: bridge vlan flags
94 * @stats: per-cpu VLAN statistics
95 * @br: if MASTER flag set, this points to a bridge struct
96 * @port: if MASTER flag unset, this points to a port struct
97 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
98 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
100 * @vlist: sorted list of VLAN entries
101 * @rcu: used for entry destruction
103 * This structure is shared between the global per-VLAN entries contained in
104 * the bridge rhashtable and the local per-port per-VLAN entries contained in
105 * the port's rhashtable. The union entries should be interpreted depending on
106 * the entry flags that are set.
108 struct net_bridge_vlan {
109 struct rhash_head vnode;
112 struct br_vlan_stats __percpu *stats;
114 struct net_bridge *br;
115 struct net_bridge_port *port;
119 struct net_bridge_vlan *brvlan;
121 struct list_head vlist;
127 * struct net_bridge_vlan_group
129 * @vlan_hash: VLAN entry rhashtable
130 * @vlan_list: sorted VLAN entry list
131 * @num_vlans: number of total VLAN entries
132 * @pvid: PVID VLAN id
134 * IMPORTANT: Be careful when checking if there're VLAN entries using list
135 * primitives because the bridge can have entries in its list which
136 * are just for global context but not for filtering, i.e. they have
137 * the master flag set but not the brentry flag. If you have to check
138 * if there're "real" entries in the bridge please test @num_vlans
140 struct net_bridge_vlan_group {
141 struct rhashtable vlan_hash;
142 struct list_head vlan_list;
147 struct net_bridge_fdb_entry
149 struct hlist_node hlist;
150 struct net_bridge_port *dst;
152 unsigned long updated;
156 unsigned char is_local:1,
159 added_by_external_learn:1;
163 #define MDB_PG_FLAGS_PERMANENT BIT(0)
164 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
166 struct net_bridge_port_group {
167 struct net_bridge_port *port;
168 struct net_bridge_port_group __rcu *next;
169 struct hlist_node mglist;
171 struct timer_list timer;
176 struct net_bridge_mdb_entry
178 struct hlist_node hlist[2];
179 struct net_bridge *br;
180 struct net_bridge_port_group __rcu *ports;
182 struct timer_list timer;
187 struct net_bridge_mdb_htable
189 struct hlist_head *mhash;
191 struct net_bridge_mdb_htable *old;
198 struct net_bridge_port
200 struct net_bridge *br;
201 struct net_device *dev;
202 struct list_head list;
208 unsigned char topology_change_ack;
209 unsigned char config_pending;
211 port_id designated_port;
212 bridge_id designated_root;
213 bridge_id designated_bridge;
216 unsigned long designated_age;
218 struct timer_list forward_delay_timer;
219 struct timer_list hold_timer;
220 struct timer_list message_age_timer;
226 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
227 struct bridge_mcast_own_query ip4_own_query;
228 #if IS_ENABLED(CONFIG_IPV6)
229 struct bridge_mcast_own_query ip6_own_query;
230 #endif /* IS_ENABLED(CONFIG_IPV6) */
231 unsigned char multicast_router;
232 struct timer_list multicast_router_timer;
233 struct hlist_head mglist;
234 struct hlist_node rlist;
238 char sysfs_name[IFNAMSIZ];
241 #ifdef CONFIG_NET_POLL_CONTROLLER
244 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
245 struct net_bridge_vlan_group __rcu *vlgrp;
249 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
250 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
252 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
254 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
256 return rcu_dereference(dev->rx_handler_data);
259 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
261 return br_port_exists(dev) ?
262 rtnl_dereference(dev->rx_handler_data) : NULL;
268 struct list_head port_list;
269 struct net_device *dev;
271 struct pcpu_sw_netstats __percpu *stats;
272 spinlock_t hash_lock;
273 struct hlist_head hash[BR_HASH_SIZE];
274 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
276 struct rtable fake_rtable;
277 struct rt6_info fake_rt6_info;
279 bool nf_call_iptables;
280 bool nf_call_ip6tables;
281 bool nf_call_arptables;
284 u16 group_fwd_mask_required;
287 bridge_id designated_root;
290 unsigned long max_age;
291 unsigned long hello_time;
292 unsigned long forward_delay;
293 unsigned long bridge_max_age;
294 unsigned long ageing_time;
295 unsigned long bridge_hello_time;
296 unsigned long bridge_forward_delay;
298 u8 group_addr[ETH_ALEN];
303 BR_NO_STP, /* no spanning tree */
304 BR_KERNEL_STP, /* old STP in kernel */
305 BR_USER_STP, /* new RSTP in userspace */
308 unsigned char topology_change;
309 unsigned char topology_change_detected;
311 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
312 unsigned char multicast_router;
314 u8 multicast_disabled:1;
315 u8 multicast_querier:1;
316 u8 multicast_query_use_ifaddr:1;
322 u32 multicast_last_member_count;
323 u32 multicast_startup_query_count;
325 unsigned long multicast_last_member_interval;
326 unsigned long multicast_membership_interval;
327 unsigned long multicast_querier_interval;
328 unsigned long multicast_query_interval;
329 unsigned long multicast_query_response_interval;
330 unsigned long multicast_startup_query_interval;
332 spinlock_t multicast_lock;
333 struct net_bridge_mdb_htable __rcu *mdb;
334 struct hlist_head router_list;
336 struct timer_list multicast_router_timer;
337 struct bridge_mcast_other_query ip4_other_query;
338 struct bridge_mcast_own_query ip4_own_query;
339 struct bridge_mcast_querier ip4_querier;
340 #if IS_ENABLED(CONFIG_IPV6)
341 struct bridge_mcast_other_query ip6_other_query;
342 struct bridge_mcast_own_query ip6_own_query;
343 struct bridge_mcast_querier ip6_querier;
344 #endif /* IS_ENABLED(CONFIG_IPV6) */
347 struct timer_list hello_timer;
348 struct timer_list tcn_timer;
349 struct timer_list topology_change_timer;
350 struct timer_list gc_timer;
351 struct kobject *ifobj;
353 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
354 struct net_bridge_vlan_group __rcu *vlgrp;
356 u8 vlan_stats_enabled;
362 struct br_input_skb_cb {
363 struct net_device *brdev;
365 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
370 bool proxyarp_replied;
372 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
377 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
379 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
380 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
382 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
385 #define br_printk(level, br, format, args...) \
386 printk(level "%s: " format, (br)->dev->name, ##args)
388 #define br_err(__br, format, args...) \
389 br_printk(KERN_ERR, __br, format, ##args)
390 #define br_warn(__br, format, args...) \
391 br_printk(KERN_WARNING, __br, format, ##args)
392 #define br_notice(__br, format, args...) \
393 br_printk(KERN_NOTICE, __br, format, ##args)
394 #define br_info(__br, format, args...) \
395 br_printk(KERN_INFO, __br, format, ##args)
397 #define br_debug(br, format, args...) \
398 pr_debug("%s: " format, (br)->dev->name, ##args)
400 /* called under bridge lock */
401 static inline int br_is_root_bridge(const struct net_bridge *br)
403 return !memcmp(&br->bridge_id, &br->designated_root, 8);
406 /* check if a VLAN entry is global */
407 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
409 return v->flags & BRIDGE_VLAN_INFO_MASTER;
412 /* check if a VLAN entry is used by the bridge */
413 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
415 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
418 /* check if we should use the vlan entry, returns false if it's only context */
419 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
421 if (br_vlan_is_master(v)) {
422 if (br_vlan_is_brentry(v))
432 void br_dev_setup(struct net_device *dev);
433 void br_dev_delete(struct net_device *dev, struct list_head *list);
434 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
435 #ifdef CONFIG_NET_POLL_CONTROLLER
436 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
439 struct netpoll *np = p->np;
442 netpoll_send_skb(np, skb);
445 int br_netpoll_enable(struct net_bridge_port *p);
446 void br_netpoll_disable(struct net_bridge_port *p);
448 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
453 static inline int br_netpoll_enable(struct net_bridge_port *p)
458 static inline void br_netpoll_disable(struct net_bridge_port *p)
464 int br_fdb_init(void);
465 void br_fdb_fini(void);
466 void br_fdb_flush(struct net_bridge *br);
467 void br_fdb_find_delete_local(struct net_bridge *br,
468 const struct net_bridge_port *p,
469 const unsigned char *addr, u16 vid);
470 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
471 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
472 void br_fdb_cleanup(unsigned long arg);
473 void br_fdb_delete_by_port(struct net_bridge *br,
474 const struct net_bridge_port *p, u16 vid, int do_all);
475 struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
476 const unsigned char *addr, __u16 vid);
477 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
478 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
480 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
481 const unsigned char *addr, u16 vid);
482 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
483 const unsigned char *addr, u16 vid, bool added_by_user);
485 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
486 struct net_device *dev, const unsigned char *addr, u16 vid);
487 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
488 const unsigned char *addr, u16 vid, u16 nlh_flags);
489 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
490 struct net_device *dev, struct net_device *fdev, int idx);
491 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
492 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
493 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
494 const unsigned char *addr, u16 vid);
495 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
496 const unsigned char *addr, u16 vid);
499 void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
500 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
501 void br_forward(const struct net_bridge_port *to,
502 struct sk_buff *skb, struct sk_buff *skb0);
503 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
504 void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
505 void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
506 struct sk_buff *skb2, bool unicast);
509 void br_port_carrier_check(struct net_bridge_port *p);
510 int br_add_bridge(struct net *net, const char *name);
511 int br_del_bridge(struct net *net, const char *name);
512 int br_add_if(struct net_bridge *br, struct net_device *dev);
513 int br_del_if(struct net_bridge *br, struct net_device *dev);
514 int br_min_mtu(const struct net_bridge *br);
515 netdev_features_t br_features_recompute(struct net_bridge *br,
516 netdev_features_t features);
517 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
518 void br_manage_promisc(struct net_bridge *br);
521 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
522 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
524 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
526 return rcu_dereference(dev->rx_handler) == br_handle_frame;
529 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
531 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
535 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
536 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
540 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
541 extern unsigned int br_mdb_rehash_seq;
542 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
543 struct sk_buff *skb, u16 vid);
544 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
545 struct sk_buff *skb, u16 vid);
546 void br_multicast_add_port(struct net_bridge_port *port);
547 void br_multicast_del_port(struct net_bridge_port *port);
548 void br_multicast_enable_port(struct net_bridge_port *port);
549 void br_multicast_disable_port(struct net_bridge_port *port);
550 void br_multicast_init(struct net_bridge *br);
551 void br_multicast_open(struct net_bridge *br);
552 void br_multicast_stop(struct net_bridge *br);
553 void br_multicast_dev_del(struct net_bridge *br);
554 void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
555 struct sk_buff *skb);
556 void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
557 struct sk_buff *skb, struct sk_buff *skb2);
558 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
559 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
560 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
561 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
562 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
563 struct net_bridge_mdb_entry *
564 br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
565 struct net_bridge_mdb_entry *
566 br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
567 struct br_ip *group);
568 void br_multicast_free_pg(struct rcu_head *head);
569 struct net_bridge_port_group *
570 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
571 struct net_bridge_port_group __rcu *next,
572 unsigned char flags);
573 void br_mdb_init(void);
574 void br_mdb_uninit(void);
575 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
576 struct br_ip *group, int type, u8 flags);
577 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
580 #define mlock_dereference(X, br) \
581 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
583 static inline bool br_multicast_is_router(struct net_bridge *br)
585 return br->multicast_router == 2 ||
586 (br->multicast_router == 1 &&
587 timer_pending(&br->multicast_router_timer));
591 __br_multicast_querier_exists(struct net_bridge *br,
592 struct bridge_mcast_other_query *querier,
595 bool own_querier_enabled;
597 if (br->multicast_querier) {
598 if (is_ipv6 && !br->has_ipv6_addr)
599 own_querier_enabled = false;
601 own_querier_enabled = true;
603 own_querier_enabled = false;
606 return time_is_before_jiffies(querier->delay_time) &&
607 (own_querier_enabled || timer_pending(&querier->timer));
610 static inline bool br_multicast_querier_exists(struct net_bridge *br,
613 switch (eth->h_proto) {
614 case (htons(ETH_P_IP)):
615 return __br_multicast_querier_exists(br,
616 &br->ip4_other_query, false);
617 #if IS_ENABLED(CONFIG_IPV6)
618 case (htons(ETH_P_IPV6)):
619 return __br_multicast_querier_exists(br,
620 &br->ip6_other_query, true);
627 static inline int br_multicast_rcv(struct net_bridge *br,
628 struct net_bridge_port *port,
635 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
636 struct sk_buff *skb, u16 vid)
641 static inline void br_multicast_add_port(struct net_bridge_port *port)
645 static inline void br_multicast_del_port(struct net_bridge_port *port)
649 static inline void br_multicast_enable_port(struct net_bridge_port *port)
653 static inline void br_multicast_disable_port(struct net_bridge_port *port)
657 static inline void br_multicast_init(struct net_bridge *br)
661 static inline void br_multicast_open(struct net_bridge *br)
665 static inline void br_multicast_stop(struct net_bridge *br)
669 static inline void br_multicast_dev_del(struct net_bridge *br)
673 static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
678 static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
680 struct sk_buff *skb2)
683 static inline bool br_multicast_is_router(struct net_bridge *br)
687 static inline bool br_multicast_querier_exists(struct net_bridge *br,
692 static inline void br_mdb_init(void)
695 static inline void br_mdb_uninit(void)
701 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
702 bool br_allowed_ingress(const struct net_bridge *br,
703 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
705 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
706 const struct sk_buff *skb);
707 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
708 struct sk_buff *br_handle_vlan(struct net_bridge *br,
709 struct net_bridge_vlan_group *vg,
710 struct sk_buff *skb);
711 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
712 int br_vlan_delete(struct net_bridge *br, u16 vid);
713 void br_vlan_flush(struct net_bridge *br);
714 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
715 void br_recalculate_fwd_mask(struct net_bridge *br);
716 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
717 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
718 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
719 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
720 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
721 int br_vlan_init(struct net_bridge *br);
722 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
723 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
724 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
725 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
726 void nbp_vlan_flush(struct net_bridge_port *port);
727 int nbp_vlan_init(struct net_bridge_port *port);
728 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
729 void br_vlan_get_stats(const struct net_bridge_vlan *v,
730 struct br_vlan_stats *stats);
732 static inline struct net_bridge_vlan_group *br_vlan_group(
733 const struct net_bridge *br)
735 return rtnl_dereference(br->vlgrp);
738 static inline struct net_bridge_vlan_group *nbp_vlan_group(
739 const struct net_bridge_port *p)
741 return rtnl_dereference(p->vlgrp);
744 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
745 const struct net_bridge *br)
747 return rcu_dereference(br->vlgrp);
750 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
751 const struct net_bridge_port *p)
753 return rcu_dereference(p->vlgrp);
756 /* Since bridge now depends on 8021Q module, but the time bridge sees the
757 * skb, the vlan tag will always be present if the frame was tagged.
759 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
763 if (skb_vlan_tag_present(skb)) {
764 *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
773 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
782 static inline int br_vlan_enabled(struct net_bridge *br)
784 return br->vlan_enabled;
787 static inline bool br_allowed_ingress(const struct net_bridge *br,
788 struct net_bridge_vlan_group *vg,
795 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
796 const struct sk_buff *skb)
801 static inline bool br_should_learn(struct net_bridge_port *p,
802 struct sk_buff *skb, u16 *vid)
807 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
808 struct net_bridge_vlan_group *vg,
814 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
819 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
824 static inline void br_vlan_flush(struct net_bridge *br)
828 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
832 static inline int br_vlan_init(struct net_bridge *br)
837 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
842 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
847 static inline void nbp_vlan_flush(struct net_bridge_port *port)
851 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
857 static inline int nbp_vlan_init(struct net_bridge_port *port)
862 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
867 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
872 static inline int br_vlan_enabled(struct net_bridge *br)
877 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
883 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
889 static inline struct net_bridge_vlan_group *br_vlan_group(
890 const struct net_bridge *br)
895 static inline struct net_bridge_vlan_group *nbp_vlan_group(
896 const struct net_bridge_port *p)
901 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
902 const struct net_bridge *br)
907 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
908 const struct net_bridge_port *p)
913 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
914 struct br_vlan_stats *stats)
920 int (*br_dev_xmit_hook)(struct sk_buff *skb);
922 extern const struct nf_br_ops __rcu *nf_br_ops;
925 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
926 int br_nf_core_init(void);
927 void br_nf_core_fini(void);
928 void br_netfilter_rtable_init(struct net_bridge *);
930 static inline int br_nf_core_init(void) { return 0; }
931 static inline void br_nf_core_fini(void) {}
932 #define br_netfilter_rtable_init(x)
936 void br_set_state(struct net_bridge_port *p, unsigned int state);
937 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
938 void br_init_port(struct net_bridge_port *p);
939 void br_become_designated_port(struct net_bridge_port *p);
941 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
942 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
943 int br_set_hello_time(struct net_bridge *br, unsigned long x);
944 int br_set_max_age(struct net_bridge *br, unsigned long x);
945 int br_set_ageing_time(struct net_bridge *br, u32 ageing_time);
949 void br_stp_enable_bridge(struct net_bridge *br);
950 void br_stp_disable_bridge(struct net_bridge *br);
951 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
952 void br_stp_enable_port(struct net_bridge_port *p);
953 void br_stp_disable_port(struct net_bridge_port *p);
954 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
955 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
956 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
957 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
958 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
959 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
963 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
964 struct net_device *dev);
967 void br_stp_timer_init(struct net_bridge *br);
968 void br_stp_port_timer_init(struct net_bridge_port *p);
969 unsigned long br_timer_value(const struct timer_list *timer);
972 #if IS_ENABLED(CONFIG_ATM_LANE)
973 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
977 extern struct rtnl_link_ops br_link_ops;
978 int br_netlink_init(void);
979 void br_netlink_fini(void);
980 void br_ifinfo_notify(int event, struct net_bridge_port *port);
981 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
982 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
983 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
984 u32 filter_mask, int nlflags);
988 extern const struct sysfs_ops brport_sysfs_ops;
989 int br_sysfs_addif(struct net_bridge_port *p);
990 int br_sysfs_renameif(struct net_bridge_port *p);
993 int br_sysfs_addbr(struct net_device *dev);
994 void br_sysfs_delbr(struct net_device *dev);
998 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
999 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1000 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1001 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1002 #endif /* CONFIG_SYSFS */