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>
24 #define BR_HASH_BITS 8
25 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
27 #define BR_HOLD_TIME (1*HZ)
29 #define BR_PORT_BITS 10
30 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
31 #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
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 net_port_vlans
{
84 struct net_bridge_port
*port
;
85 struct net_bridge
*br
;
88 unsigned long vlan_bitmap
[BR_VLAN_BITMAP_LEN
];
89 unsigned long untagged_bitmap
[BR_VLAN_BITMAP_LEN
];
93 struct net_bridge_fdb_entry
95 struct hlist_node hlist
;
96 struct net_bridge_port
*dst
;
99 unsigned long updated
;
102 unsigned char is_local
:1,
105 added_by_external_learn
:1;
109 struct net_bridge_port_group
{
110 struct net_bridge_port
*port
;
111 struct net_bridge_port_group __rcu
*next
;
112 struct hlist_node mglist
;
114 struct timer_list timer
;
119 struct net_bridge_mdb_entry
121 struct hlist_node hlist
[2];
122 struct net_bridge
*br
;
123 struct net_bridge_port_group __rcu
*ports
;
125 struct timer_list timer
;
130 struct net_bridge_mdb_htable
132 struct hlist_head
*mhash
;
134 struct net_bridge_mdb_htable
*old
;
141 struct net_bridge_port
143 struct net_bridge
*br
;
144 struct net_device
*dev
;
145 struct list_head list
;
151 unsigned char topology_change_ack
;
152 unsigned char config_pending
;
154 port_id designated_port
;
155 bridge_id designated_root
;
156 bridge_id designated_bridge
;
159 unsigned long designated_age
;
161 struct timer_list forward_delay_timer
;
162 struct timer_list hold_timer
;
163 struct timer_list message_age_timer
;
169 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
170 struct bridge_mcast_own_query ip4_own_query
;
171 #if IS_ENABLED(CONFIG_IPV6)
172 struct bridge_mcast_own_query ip6_own_query
;
173 #endif /* IS_ENABLED(CONFIG_IPV6) */
174 unsigned char multicast_router
;
175 struct timer_list multicast_router_timer
;
176 struct hlist_head mglist
;
177 struct hlist_node rlist
;
181 char sysfs_name
[IFNAMSIZ
];
184 #ifdef CONFIG_NET_POLL_CONTROLLER
187 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
188 struct net_port_vlans __rcu
*vlan_info
;
192 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
193 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
195 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
197 static inline struct net_bridge_port
*br_port_get_rcu(const struct net_device
*dev
)
199 return rcu_dereference(dev
->rx_handler_data
);
202 static inline struct net_bridge_port
*br_port_get_rtnl(const struct net_device
*dev
)
204 return br_port_exists(dev
) ?
205 rtnl_dereference(dev
->rx_handler_data
) : NULL
;
211 struct list_head port_list
;
212 struct net_device
*dev
;
214 struct pcpu_sw_netstats __percpu
*stats
;
215 spinlock_t hash_lock
;
216 struct hlist_head hash
[BR_HASH_SIZE
];
217 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
219 struct rtable fake_rtable
;
220 struct rt6_info fake_rt6_info
;
222 bool nf_call_iptables
;
223 bool nf_call_ip6tables
;
224 bool nf_call_arptables
;
227 u16 group_fwd_mask_required
;
230 bridge_id designated_root
;
233 unsigned long max_age
;
234 unsigned long hello_time
;
235 unsigned long forward_delay
;
236 unsigned long bridge_max_age
;
237 unsigned long ageing_time
;
238 unsigned long bridge_hello_time
;
239 unsigned long bridge_forward_delay
;
241 u8 group_addr
[ETH_ALEN
];
246 BR_NO_STP
, /* no spanning tree */
247 BR_KERNEL_STP
, /* old STP in kernel */
248 BR_USER_STP
, /* new RSTP in userspace */
251 unsigned char topology_change
;
252 unsigned char topology_change_detected
;
254 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
255 unsigned char multicast_router
;
257 u8 multicast_disabled
:1;
258 u8 multicast_querier
:1;
259 u8 multicast_query_use_ifaddr
:1;
264 u32 multicast_last_member_count
;
265 u32 multicast_startup_query_count
;
267 unsigned long multicast_last_member_interval
;
268 unsigned long multicast_membership_interval
;
269 unsigned long multicast_querier_interval
;
270 unsigned long multicast_query_interval
;
271 unsigned long multicast_query_response_interval
;
272 unsigned long multicast_startup_query_interval
;
274 spinlock_t multicast_lock
;
275 struct net_bridge_mdb_htable __rcu
*mdb
;
276 struct hlist_head router_list
;
278 struct timer_list multicast_router_timer
;
279 struct bridge_mcast_other_query ip4_other_query
;
280 struct bridge_mcast_own_query ip4_own_query
;
281 struct bridge_mcast_querier ip4_querier
;
282 #if IS_ENABLED(CONFIG_IPV6)
283 struct bridge_mcast_other_query ip6_other_query
;
284 struct bridge_mcast_own_query ip6_own_query
;
285 struct bridge_mcast_querier ip6_querier
;
286 #endif /* IS_ENABLED(CONFIG_IPV6) */
289 struct timer_list hello_timer
;
290 struct timer_list tcn_timer
;
291 struct timer_list topology_change_timer
;
292 struct timer_list gc_timer
;
293 struct kobject
*ifobj
;
295 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
299 struct net_port_vlans __rcu
*vlan_info
;
303 struct br_input_skb_cb
{
304 struct net_device
*brdev
;
306 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
311 bool proxyarp_replied
;
313 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
318 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
320 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
321 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
323 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
326 #define br_printk(level, br, format, args...) \
327 printk(level "%s: " format, (br)->dev->name, ##args)
329 #define br_err(__br, format, args...) \
330 br_printk(KERN_ERR, __br, format, ##args)
331 #define br_warn(__br, format, args...) \
332 br_printk(KERN_WARNING, __br, format, ##args)
333 #define br_notice(__br, format, args...) \
334 br_printk(KERN_NOTICE, __br, format, ##args)
335 #define br_info(__br, format, args...) \
336 br_printk(KERN_INFO, __br, format, ##args)
338 #define br_debug(br, format, args...) \
339 pr_debug("%s: " format, (br)->dev->name, ##args)
341 /* called under bridge lock */
342 static inline int br_is_root_bridge(const struct net_bridge
*br
)
344 return !memcmp(&br
->bridge_id
, &br
->designated_root
, 8);
348 void br_dev_setup(struct net_device
*dev
);
349 void br_dev_delete(struct net_device
*dev
, struct list_head
*list
);
350 netdev_tx_t
br_dev_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
351 #ifdef CONFIG_NET_POLL_CONTROLLER
352 static inline void br_netpoll_send_skb(const struct net_bridge_port
*p
,
355 struct netpoll
*np
= p
->np
;
358 netpoll_send_skb(np
, skb
);
361 int br_netpoll_enable(struct net_bridge_port
*p
);
362 void br_netpoll_disable(struct net_bridge_port
*p
);
364 static inline void br_netpoll_send_skb(const struct net_bridge_port
*p
,
369 static inline int br_netpoll_enable(struct net_bridge_port
*p
)
374 static inline void br_netpoll_disable(struct net_bridge_port
*p
)
380 int br_fdb_init(void);
381 void br_fdb_fini(void);
382 void br_fdb_flush(struct net_bridge
*br
);
383 void br_fdb_find_delete_local(struct net_bridge
*br
,
384 const struct net_bridge_port
*p
,
385 const unsigned char *addr
, u16 vid
);
386 void br_fdb_changeaddr(struct net_bridge_port
*p
, const unsigned char *newaddr
);
387 void br_fdb_change_mac_address(struct net_bridge
*br
, const u8
*newaddr
);
388 void br_fdb_cleanup(unsigned long arg
);
389 void br_fdb_delete_by_port(struct net_bridge
*br
,
390 const struct net_bridge_port
*p
, u16 vid
, int do_all
);
391 struct net_bridge_fdb_entry
*__br_fdb_get(struct net_bridge
*br
,
392 const unsigned char *addr
, __u16 vid
);
393 int br_fdb_test_addr(struct net_device
*dev
, unsigned char *addr
);
394 int br_fdb_fillbuf(struct net_bridge
*br
, void *buf
, unsigned long count
,
396 int br_fdb_insert(struct net_bridge
*br
, struct net_bridge_port
*source
,
397 const unsigned char *addr
, u16 vid
);
398 void br_fdb_update(struct net_bridge
*br
, struct net_bridge_port
*source
,
399 const unsigned char *addr
, u16 vid
, bool added_by_user
);
401 int br_fdb_delete(struct ndmsg
*ndm
, struct nlattr
*tb
[],
402 struct net_device
*dev
, const unsigned char *addr
, u16 vid
);
403 int br_fdb_add(struct ndmsg
*nlh
, struct nlattr
*tb
[], struct net_device
*dev
,
404 const unsigned char *addr
, u16 vid
, u16 nlh_flags
);
405 int br_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
,
406 struct net_device
*dev
, struct net_device
*fdev
, int idx
);
407 int br_fdb_sync_static(struct net_bridge
*br
, struct net_bridge_port
*p
);
408 void br_fdb_unsync_static(struct net_bridge
*br
, struct net_bridge_port
*p
);
409 int br_fdb_external_learn_add(struct net_bridge
*br
, struct net_bridge_port
*p
,
410 const unsigned char *addr
, u16 vid
);
411 int br_fdb_external_learn_del(struct net_bridge
*br
, struct net_bridge_port
*p
,
412 const unsigned char *addr
, u16 vid
);
415 void br_deliver(const struct net_bridge_port
*to
, struct sk_buff
*skb
);
416 int br_dev_queue_push_xmit(struct sock
*sk
, struct sk_buff
*skb
);
417 void br_forward(const struct net_bridge_port
*to
,
418 struct sk_buff
*skb
, struct sk_buff
*skb0
);
419 int br_forward_finish(struct sock
*sk
, struct sk_buff
*skb
);
420 void br_flood_deliver(struct net_bridge
*br
, struct sk_buff
*skb
, bool unicast
);
421 void br_flood_forward(struct net_bridge
*br
, struct sk_buff
*skb
,
422 struct sk_buff
*skb2
, bool unicast
);
425 void br_port_carrier_check(struct net_bridge_port
*p
);
426 int br_add_bridge(struct net
*net
, const char *name
);
427 int br_del_bridge(struct net
*net
, const char *name
);
428 int br_add_if(struct net_bridge
*br
, struct net_device
*dev
);
429 int br_del_if(struct net_bridge
*br
, struct net_device
*dev
);
430 int br_min_mtu(const struct net_bridge
*br
);
431 netdev_features_t
br_features_recompute(struct net_bridge
*br
,
432 netdev_features_t features
);
433 void br_port_flags_change(struct net_bridge_port
*port
, unsigned long mask
);
434 void br_manage_promisc(struct net_bridge
*br
);
437 int br_handle_frame_finish(struct sock
*sk
, struct sk_buff
*skb
);
438 rx_handler_result_t
br_handle_frame(struct sk_buff
**pskb
);
440 static inline bool br_rx_handler_check_rcu(const struct net_device
*dev
)
442 return rcu_dereference(dev
->rx_handler
) == br_handle_frame
;
445 static inline struct net_bridge_port
*br_port_get_check_rcu(const struct net_device
*dev
)
447 return br_rx_handler_check_rcu(dev
) ? br_port_get_rcu(dev
) : NULL
;
451 int br_dev_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
452 int br_ioctl_deviceless_stub(struct net
*net
, unsigned int cmd
,
456 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
457 extern unsigned int br_mdb_rehash_seq
;
458 int br_multicast_rcv(struct net_bridge
*br
, struct net_bridge_port
*port
,
459 struct sk_buff
*skb
, u16 vid
);
460 struct net_bridge_mdb_entry
*br_mdb_get(struct net_bridge
*br
,
461 struct sk_buff
*skb
, u16 vid
);
462 void br_multicast_add_port(struct net_bridge_port
*port
);
463 void br_multicast_del_port(struct net_bridge_port
*port
);
464 void br_multicast_enable_port(struct net_bridge_port
*port
);
465 void br_multicast_disable_port(struct net_bridge_port
*port
);
466 void br_multicast_init(struct net_bridge
*br
);
467 void br_multicast_open(struct net_bridge
*br
);
468 void br_multicast_stop(struct net_bridge
*br
);
469 void br_multicast_dev_del(struct net_bridge
*br
);
470 void br_multicast_deliver(struct net_bridge_mdb_entry
*mdst
,
471 struct sk_buff
*skb
);
472 void br_multicast_forward(struct net_bridge_mdb_entry
*mdst
,
473 struct sk_buff
*skb
, struct sk_buff
*skb2
);
474 int br_multicast_set_router(struct net_bridge
*br
, unsigned long val
);
475 int br_multicast_set_port_router(struct net_bridge_port
*p
, unsigned long val
);
476 int br_multicast_toggle(struct net_bridge
*br
, unsigned long val
);
477 int br_multicast_set_querier(struct net_bridge
*br
, unsigned long val
);
478 int br_multicast_set_hash_max(struct net_bridge
*br
, unsigned long val
);
479 struct net_bridge_mdb_entry
*
480 br_mdb_ip_get(struct net_bridge_mdb_htable
*mdb
, struct br_ip
*dst
);
481 struct net_bridge_mdb_entry
*
482 br_multicast_new_group(struct net_bridge
*br
, struct net_bridge_port
*port
,
483 struct br_ip
*group
);
484 void br_multicast_free_pg(struct rcu_head
*head
);
485 struct net_bridge_port_group
*
486 br_multicast_new_port_group(struct net_bridge_port
*port
, struct br_ip
*group
,
487 struct net_bridge_port_group __rcu
*next
,
488 unsigned char state
);
489 void br_mdb_init(void);
490 void br_mdb_uninit(void);
491 void br_mdb_notify(struct net_device
*dev
, struct net_bridge_port
*port
,
492 struct br_ip
*group
, int type
, u8 state
);
494 #define mlock_dereference(X, br) \
495 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
497 static inline bool br_multicast_is_router(struct net_bridge
*br
)
499 return br
->multicast_router
== 2 ||
500 (br
->multicast_router
== 1 &&
501 timer_pending(&br
->multicast_router_timer
));
505 __br_multicast_querier_exists(struct net_bridge
*br
,
506 struct bridge_mcast_other_query
*querier
)
508 return time_is_before_jiffies(querier
->delay_time
) &&
509 (br
->multicast_querier
|| timer_pending(&querier
->timer
));
512 static inline bool br_multicast_querier_exists(struct net_bridge
*br
,
515 switch (eth
->h_proto
) {
516 case (htons(ETH_P_IP
)):
517 return __br_multicast_querier_exists(br
, &br
->ip4_other_query
);
518 #if IS_ENABLED(CONFIG_IPV6)
519 case (htons(ETH_P_IPV6
)):
520 return __br_multicast_querier_exists(br
, &br
->ip6_other_query
);
527 static inline int br_multicast_rcv(struct net_bridge
*br
,
528 struct net_bridge_port
*port
,
535 static inline struct net_bridge_mdb_entry
*br_mdb_get(struct net_bridge
*br
,
536 struct sk_buff
*skb
, u16 vid
)
541 static inline void br_multicast_add_port(struct net_bridge_port
*port
)
545 static inline void br_multicast_del_port(struct net_bridge_port
*port
)
549 static inline void br_multicast_enable_port(struct net_bridge_port
*port
)
553 static inline void br_multicast_disable_port(struct net_bridge_port
*port
)
557 static inline void br_multicast_init(struct net_bridge
*br
)
561 static inline void br_multicast_open(struct net_bridge
*br
)
565 static inline void br_multicast_stop(struct net_bridge
*br
)
569 static inline void br_multicast_deliver(struct net_bridge_mdb_entry
*mdst
,
574 static inline void br_multicast_forward(struct net_bridge_mdb_entry
*mdst
,
576 struct sk_buff
*skb2
)
579 static inline bool br_multicast_is_router(struct net_bridge
*br
)
583 static inline bool br_multicast_querier_exists(struct net_bridge
*br
,
588 static inline void br_mdb_init(void)
591 static inline void br_mdb_uninit(void)
597 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
598 bool br_allowed_ingress(struct net_bridge
*br
, struct net_port_vlans
*v
,
599 struct sk_buff
*skb
, u16
*vid
);
600 bool br_allowed_egress(struct net_bridge
*br
, const struct net_port_vlans
*v
,
601 const struct sk_buff
*skb
);
602 bool br_should_learn(struct net_bridge_port
*p
, struct sk_buff
*skb
, u16
*vid
);
603 struct sk_buff
*br_handle_vlan(struct net_bridge
*br
,
604 const struct net_port_vlans
*v
,
605 struct sk_buff
*skb
);
606 int br_vlan_add(struct net_bridge
*br
, u16 vid
, u16 flags
);
607 int br_vlan_delete(struct net_bridge
*br
, u16 vid
);
608 void br_vlan_flush(struct net_bridge
*br
);
609 bool br_vlan_find(struct net_bridge
*br
, u16 vid
);
610 void br_recalculate_fwd_mask(struct net_bridge
*br
);
611 int br_vlan_filter_toggle(struct net_bridge
*br
, unsigned long val
);
612 int br_vlan_set_proto(struct net_bridge
*br
, unsigned long val
);
613 int br_vlan_init(struct net_bridge
*br
);
614 int br_vlan_set_default_pvid(struct net_bridge
*br
, unsigned long val
);
615 int nbp_vlan_add(struct net_bridge_port
*port
, u16 vid
, u16 flags
);
616 int nbp_vlan_delete(struct net_bridge_port
*port
, u16 vid
);
617 void nbp_vlan_flush(struct net_bridge_port
*port
);
618 bool nbp_vlan_find(struct net_bridge_port
*port
, u16 vid
);
619 int nbp_vlan_init(struct net_bridge_port
*port
);
621 static inline struct net_port_vlans
*br_get_vlan_info(
622 const struct net_bridge
*br
)
624 return rcu_dereference_rtnl(br
->vlan_info
);
627 static inline struct net_port_vlans
*nbp_get_vlan_info(
628 const struct net_bridge_port
*p
)
630 return rcu_dereference_rtnl(p
->vlan_info
);
633 /* Since bridge now depends on 8021Q module, but the time bridge sees the
634 * skb, the vlan tag will always be present if the frame was tagged.
636 static inline int br_vlan_get_tag(const struct sk_buff
*skb
, u16
*vid
)
640 if (skb_vlan_tag_present(skb
))
641 *vid
= skb_vlan_tag_get(skb
) & VLAN_VID_MASK
;
650 static inline u16
br_get_pvid(const struct net_port_vlans
*v
)
659 static inline int br_vlan_enabled(struct net_bridge
*br
)
661 return br
->vlan_enabled
;
664 static inline bool br_allowed_ingress(struct net_bridge
*br
,
665 struct net_port_vlans
*v
,
672 static inline bool br_allowed_egress(struct net_bridge
*br
,
673 const struct net_port_vlans
*v
,
674 const struct sk_buff
*skb
)
679 static inline bool br_should_learn(struct net_bridge_port
*p
,
680 struct sk_buff
*skb
, u16
*vid
)
685 static inline struct sk_buff
*br_handle_vlan(struct net_bridge
*br
,
686 const struct net_port_vlans
*v
,
692 static inline int br_vlan_add(struct net_bridge
*br
, u16 vid
, u16 flags
)
697 static inline int br_vlan_delete(struct net_bridge
*br
, u16 vid
)
702 static inline void br_vlan_flush(struct net_bridge
*br
)
706 static inline bool br_vlan_find(struct net_bridge
*br
, u16 vid
)
711 static inline void br_recalculate_fwd_mask(struct net_bridge
*br
)
715 static inline int br_vlan_init(struct net_bridge
*br
)
720 static inline int nbp_vlan_add(struct net_bridge_port
*port
, u16 vid
, u16 flags
)
725 static inline int nbp_vlan_delete(struct net_bridge_port
*port
, u16 vid
)
730 static inline void nbp_vlan_flush(struct net_bridge_port
*port
)
734 static inline struct net_port_vlans
*br_get_vlan_info(
735 const struct net_bridge
*br
)
739 static inline struct net_port_vlans
*nbp_get_vlan_info(
740 const struct net_bridge_port
*p
)
745 static inline bool nbp_vlan_find(struct net_bridge_port
*port
, u16 vid
)
750 static inline int nbp_vlan_init(struct net_bridge_port
*port
)
755 static inline u16
br_vlan_get_tag(const struct sk_buff
*skb
, u16
*tag
)
759 static inline u16
br_get_pvid(const struct net_port_vlans
*v
)
764 static inline int br_vlan_enabled(struct net_bridge
*br
)
771 int (*br_dev_xmit_hook
)(struct sk_buff
*skb
);
773 extern const struct nf_br_ops __rcu
*nf_br_ops
;
776 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
777 int br_nf_core_init(void);
778 void br_nf_core_fini(void);
779 void br_netfilter_rtable_init(struct net_bridge
*);
781 static inline int br_nf_core_init(void) { return 0; }
782 static inline void br_nf_core_fini(void) {}
783 #define br_netfilter_rtable_init(x)
787 void br_log_state(const struct net_bridge_port
*p
);
788 void br_set_state(struct net_bridge_port
*p
, unsigned int state
);
789 struct net_bridge_port
*br_get_port(struct net_bridge
*br
, u16 port_no
);
790 void br_init_port(struct net_bridge_port
*p
);
791 void br_become_designated_port(struct net_bridge_port
*p
);
793 void __br_set_forward_delay(struct net_bridge
*br
, unsigned long t
);
794 int br_set_forward_delay(struct net_bridge
*br
, unsigned long x
);
795 int br_set_hello_time(struct net_bridge
*br
, unsigned long x
);
796 int br_set_max_age(struct net_bridge
*br
, unsigned long x
);
800 void br_stp_enable_bridge(struct net_bridge
*br
);
801 void br_stp_disable_bridge(struct net_bridge
*br
);
802 void br_stp_set_enabled(struct net_bridge
*br
, unsigned long val
);
803 void br_stp_enable_port(struct net_bridge_port
*p
);
804 void br_stp_disable_port(struct net_bridge_port
*p
);
805 bool br_stp_recalculate_bridge_id(struct net_bridge
*br
);
806 void br_stp_change_bridge_id(struct net_bridge
*br
, const unsigned char *a
);
807 void br_stp_set_bridge_priority(struct net_bridge
*br
, u16 newprio
);
808 int br_stp_set_port_priority(struct net_bridge_port
*p
, unsigned long newprio
);
809 int br_stp_set_path_cost(struct net_bridge_port
*p
, unsigned long path_cost
);
810 ssize_t
br_show_bridge_id(char *buf
, const struct bridge_id
*id
);
814 void br_stp_rcv(const struct stp_proto
*proto
, struct sk_buff
*skb
,
815 struct net_device
*dev
);
818 void br_stp_timer_init(struct net_bridge
*br
);
819 void br_stp_port_timer_init(struct net_bridge_port
*p
);
820 unsigned long br_timer_value(const struct timer_list
*timer
);
823 #if IS_ENABLED(CONFIG_ATM_LANE)
824 extern int (*br_fdb_test_addr_hook
)(struct net_device
*dev
, unsigned char *addr
);
828 extern struct rtnl_link_ops br_link_ops
;
829 int br_netlink_init(void);
830 void br_netlink_fini(void);
831 void br_ifinfo_notify(int event
, struct net_bridge_port
*port
);
832 int br_setlink(struct net_device
*dev
, struct nlmsghdr
*nlmsg
, u16 flags
);
833 int br_dellink(struct net_device
*dev
, struct nlmsghdr
*nlmsg
, u16 flags
);
834 int br_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
, struct net_device
*dev
,
835 u32 filter_mask
, int nlflags
);
839 extern const struct sysfs_ops brport_sysfs_ops
;
840 int br_sysfs_addif(struct net_bridge_port
*p
);
841 int br_sysfs_renameif(struct net_bridge_port
*p
);
844 int br_sysfs_addbr(struct net_device
*dev
);
845 void br_sysfs_delbr(struct net_device
*dev
);
849 static inline int br_sysfs_addif(struct net_bridge_port
*p
) { return 0; }
850 static inline int br_sysfs_renameif(struct net_bridge_port
*p
) { return 0; }
851 static inline int br_sysfs_addbr(struct net_device
*dev
) { return 0; }
852 static inline void br_sysfs_delbr(struct net_device
*dev
) { return; }
853 #endif /* CONFIG_SYSFS */