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13#ifndef _BR_PRIVATE_H
14#define _BR_PRIVATE_H
15
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>
22
23#define BR_HASH_BITS 8
24#define BR_HASH_SIZE (1 << BR_HASH_BITS)
25
26#define BR_HOLD_TIME (1*HZ)
27
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)
31
32#define BR_VERSION "2.3"
33
34
35#define BR_GROUPFWD_DEFAULT 0
36
37#define BR_GROUPFWD_RESTRICTED 0x4007u
38
39
40#define BR_STP_PROG "/sbin/bridge-stp"
41
42typedef struct bridge_id bridge_id;
43typedef struct mac_addr mac_addr;
44typedef __u16 port_id;
45
46struct bridge_id
47{
48 unsigned char prio[2];
49 unsigned char addr[6];
50};
51
52struct mac_addr
53{
54 unsigned char addr[6];
55};
56
57struct br_ip
58{
59 union {
60 __be32 ip4;
61#if IS_ENABLED(CONFIG_IPV6)
62 struct in6_addr ip6;
63#endif
64 } u;
65 __be16 proto;
66 __u16 vid;
67};
68
69#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
70
71struct bridge_mcast_query {
72 struct timer_list timer;
73 u32 startup_sent;
74};
75
76
77struct bridge_mcast_querier {
78 struct timer_list timer;
79 unsigned long delay_time;
80};
81#endif
82
83struct net_port_vlans {
84 u16 port_idx;
85 u16 pvid;
86 union {
87 struct net_bridge_port *port;
88 struct net_bridge *br;
89 } parent;
90 struct rcu_head rcu;
91 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
92 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
93 u16 num_vlans;
94};
95
96struct net_bridge_fdb_entry
97{
98 struct hlist_node hlist;
99 struct net_bridge_port *dst;
100
101 struct rcu_head rcu;
102 unsigned long updated;
103 unsigned long used;
104 mac_addr addr;
105 unsigned char is_local;
106 unsigned char is_static;
107 __u16 vlan_id;
108};
109
110struct net_bridge_port_group {
111 struct net_bridge_port *port;
112 struct net_bridge_port_group __rcu *next;
113 struct hlist_node mglist;
114 struct rcu_head rcu;
115 struct timer_list timer;
116 struct br_ip addr;
117 unsigned char state;
118};
119
120struct net_bridge_mdb_entry
121{
122 struct hlist_node hlist[2];
123 struct net_bridge *br;
124 struct net_bridge_port_group __rcu *ports;
125 struct rcu_head rcu;
126 struct timer_list timer;
127 struct br_ip addr;
128 bool mglist;
129};
130
131struct net_bridge_mdb_htable
132{
133 struct hlist_head *mhash;
134 struct rcu_head rcu;
135 struct net_bridge_mdb_htable *old;
136 u32 size;
137 u32 max;
138 u32 secret;
139 u32 ver;
140};
141
142struct net_bridge_port
143{
144 struct net_bridge *br;
145 struct net_device *dev;
146 struct list_head list;
147
148
149 u8 priority;
150 u8 state;
151 u16 port_no;
152 unsigned char topology_change_ack;
153 unsigned char config_pending;
154 port_id port_id;
155 port_id designated_port;
156 bridge_id designated_root;
157 bridge_id designated_bridge;
158 u32 path_cost;
159 u32 designated_cost;
160 unsigned long designated_age;
161
162 struct timer_list forward_delay_timer;
163 struct timer_list hold_timer;
164 struct timer_list message_age_timer;
165 struct kobject kobj;
166 struct rcu_head rcu;
167
168 unsigned long flags;
169#define BR_HAIRPIN_MODE 0x00000001
170#define BR_BPDU_GUARD 0x00000002
171#define BR_ROOT_BLOCK 0x00000004
172#define BR_MULTICAST_FAST_LEAVE 0x00000008
173#define BR_ADMIN_COST 0x00000010
174#define BR_LEARNING 0x00000020
175#define BR_FLOOD 0x00000040
176
177#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
178 struct bridge_mcast_query ip4_query;
179#if IS_ENABLED(CONFIG_IPV6)
180 struct bridge_mcast_query ip6_query;
181#endif
182 unsigned char multicast_router;
183 struct timer_list multicast_router_timer;
184 struct hlist_head mglist;
185 struct hlist_node rlist;
186#endif
187
188#ifdef CONFIG_SYSFS
189 char sysfs_name[IFNAMSIZ];
190#endif
191
192#ifdef CONFIG_NET_POLL_CONTROLLER
193 struct netpoll *np;
194#endif
195#ifdef CONFIG_BRIDGE_VLAN_FILTERING
196 struct net_port_vlans __rcu *vlan_info;
197#endif
198};
199
200#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
201
202static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
203{
204 return rcu_dereference(dev->rx_handler_data);
205}
206
207static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
208{
209 return br_port_exists(dev) ?
210 rtnl_dereference(dev->rx_handler_data) : NULL;
211}
212
213struct br_cpu_netstats {
214 u64 rx_packets;
215 u64 rx_bytes;
216 u64 tx_packets;
217 u64 tx_bytes;
218 struct u64_stats_sync syncp;
219};
220
221struct net_bridge
222{
223 spinlock_t lock;
224 struct list_head port_list;
225 struct net_device *dev;
226
227 struct br_cpu_netstats __percpu *stats;
228 spinlock_t hash_lock;
229 struct hlist_head hash[BR_HASH_SIZE];
230#ifdef CONFIG_BRIDGE_NETFILTER
231 struct rtable fake_rtable;
232 bool nf_call_iptables;
233 bool nf_call_ip6tables;
234 bool nf_call_arptables;
235#endif
236 u16 group_fwd_mask;
237
238
239 bridge_id designated_root;
240 bridge_id bridge_id;
241 u32 root_path_cost;
242 unsigned long max_age;
243 unsigned long hello_time;
244 unsigned long forward_delay;
245 unsigned long bridge_max_age;
246 unsigned long ageing_time;
247 unsigned long bridge_hello_time;
248 unsigned long bridge_forward_delay;
249
250 u8 group_addr[ETH_ALEN];
251 u16 root_port;
252
253 enum {
254 BR_NO_STP,
255 BR_KERNEL_STP,
256 BR_USER_STP,
257 } stp_enabled;
258
259 unsigned char topology_change;
260 unsigned char topology_change_detected;
261
262#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
263 unsigned char multicast_router;
264
265 u8 multicast_disabled:1;
266 u8 multicast_querier:1;
267 u8 multicast_query_use_ifaddr:1;
268
269 u32 hash_elasticity;
270 u32 hash_max;
271
272 u32 multicast_last_member_count;
273 u32 multicast_startup_query_count;
274
275 unsigned long multicast_last_member_interval;
276 unsigned long multicast_membership_interval;
277 unsigned long multicast_querier_interval;
278 unsigned long multicast_query_interval;
279 unsigned long multicast_query_response_interval;
280 unsigned long multicast_startup_query_interval;
281
282 spinlock_t multicast_lock;
283 struct net_bridge_mdb_htable __rcu *mdb;
284 struct hlist_head router_list;
285
286 struct timer_list multicast_router_timer;
287 struct bridge_mcast_querier ip4_querier;
288 struct bridge_mcast_query ip4_query;
289#if IS_ENABLED(CONFIG_IPV6)
290 struct bridge_mcast_querier ip6_querier;
291 struct bridge_mcast_query ip6_query;
292#endif
293#endif
294
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;
300#ifdef CONFIG_BRIDGE_VLAN_FILTERING
301 u8 vlan_enabled;
302 struct net_port_vlans __rcu *vlan_info;
303#endif
304};
305
306struct br_input_skb_cb {
307 struct net_device *brdev;
308#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
309 int igmp;
310 int mrouters_only;
311#endif
312};
313
314#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
315
316#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
317# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
318#else
319# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
320#endif
321
322#define br_printk(level, br, format, args...) \
323 printk(level "%s: " format, (br)->dev->name, ##args)
324
325#define br_err(__br, format, args...) \
326 br_printk(KERN_ERR, __br, format, ##args)
327#define br_warn(__br, format, args...) \
328 br_printk(KERN_WARNING, __br, format, ##args)
329#define br_notice(__br, format, args...) \
330 br_printk(KERN_NOTICE, __br, format, ##args)
331#define br_info(__br, format, args...) \
332 br_printk(KERN_INFO, __br, format, ##args)
333
334#define br_debug(br, format, args...) \
335 pr_debug("%s: " format, (br)->dev->name, ##args)
336
337extern struct notifier_block br_device_notifier;
338
339
340static inline int br_is_root_bridge(const struct net_bridge *br)
341{
342 return !memcmp(&br->bridge_id, &br->designated_root, 8);
343}
344
345
346extern void br_dev_setup(struct net_device *dev);
347extern void br_dev_delete(struct net_device *dev, struct list_head *list);
348extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
349 struct net_device *dev);
350#ifdef CONFIG_NET_POLL_CONTROLLER
351static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
352 struct sk_buff *skb)
353{
354 struct netpoll *np = p->np;
355
356 if (np)
357 netpoll_send_skb(np, skb);
358}
359
360extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp);
361extern void br_netpoll_disable(struct net_bridge_port *p);
362#else
363static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
364 struct sk_buff *skb)
365{
366}
367
368static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
369{
370 return 0;
371}
372
373static inline void br_netpoll_disable(struct net_bridge_port *p)
374{
375}
376#endif
377
378
379extern int br_fdb_init(void);
380extern void br_fdb_fini(void);
381extern void br_fdb_flush(struct net_bridge *br);
382extern void br_fdb_changeaddr(struct net_bridge_port *p,
383 const unsigned char *newaddr);
384extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
385extern void br_fdb_cleanup(unsigned long arg);
386extern void br_fdb_delete_by_port(struct net_bridge *br,
387 const struct net_bridge_port *p, int do_all);
388extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
389 const unsigned char *addr,
390 __u16 vid);
391extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
392extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
393 unsigned long count, unsigned long off);
394extern int br_fdb_insert(struct net_bridge *br,
395 struct net_bridge_port *source,
396 const unsigned char *addr,
397 u16 vid);
398extern void br_fdb_update(struct net_bridge *br,
399 struct net_bridge_port *source,
400 const unsigned char *addr,
401 u16 vid);
402extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid);
403
404extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
405 struct net_device *dev,
406 const unsigned char *addr);
407extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[],
408 struct net_device *dev,
409 const unsigned char *addr,
410 u16 nlh_flags);
411extern int br_fdb_dump(struct sk_buff *skb,
412 struct netlink_callback *cb,
413 struct net_device *dev,
414 int idx);
415
416
417extern void br_deliver(const struct net_bridge_port *to,
418 struct sk_buff *skb);
419extern int br_dev_queue_push_xmit(struct sk_buff *skb);
420extern void br_forward(const struct net_bridge_port *to,
421 struct sk_buff *skb, struct sk_buff *skb0);
422extern int br_forward_finish(struct sk_buff *skb);
423extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb,
424 bool unicast);
425extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
426 struct sk_buff *skb2, bool unicast);
427
428
429extern void br_port_carrier_check(struct net_bridge_port *p);
430extern int br_add_bridge(struct net *net, const char *name);
431extern int br_del_bridge(struct net *net, const char *name);
432extern void br_net_exit(struct net *net);
433extern int br_add_if(struct net_bridge *br,
434 struct net_device *dev);
435extern int br_del_if(struct net_bridge *br,
436 struct net_device *dev);
437extern int br_min_mtu(const struct net_bridge *br);
438extern netdev_features_t br_features_recompute(struct net_bridge *br,
439 netdev_features_t features);
440
441
442extern int br_handle_frame_finish(struct sk_buff *skb);
443extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
444
445
446extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
447extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
448
449
450#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
451extern unsigned int br_mdb_rehash_seq;
452extern int br_multicast_rcv(struct net_bridge *br,
453 struct net_bridge_port *port,
454 struct sk_buff *skb);
455extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
456 struct sk_buff *skb, u16 vid);
457extern void br_multicast_add_port(struct net_bridge_port *port);
458extern void br_multicast_del_port(struct net_bridge_port *port);
459extern void br_multicast_enable_port(struct net_bridge_port *port);
460extern void br_multicast_disable_port(struct net_bridge_port *port);
461extern void br_multicast_init(struct net_bridge *br);
462extern void br_multicast_open(struct net_bridge *br);
463extern void br_multicast_stop(struct net_bridge *br);
464extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
465 struct sk_buff *skb);
466extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
467 struct sk_buff *skb, struct sk_buff *skb2);
468extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
469extern int br_multicast_set_port_router(struct net_bridge_port *p,
470 unsigned long val);
471extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
472extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
473extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
474extern struct net_bridge_mdb_entry *br_mdb_ip_get(
475 struct net_bridge_mdb_htable *mdb,
476 struct br_ip *dst);
477extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br,
478 struct net_bridge_port *port, struct br_ip *group);
479extern void br_multicast_free_pg(struct rcu_head *head);
480extern struct net_bridge_port_group *br_multicast_new_port_group(
481 struct net_bridge_port *port,
482 struct br_ip *group,
483 struct net_bridge_port_group __rcu *next,
484 unsigned char state);
485extern void br_mdb_init(void);
486extern void br_mdb_uninit(void);
487extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
488 struct br_ip *group, int type);
489
490#define mlock_dereference(X, br) \
491 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
492
493static inline bool br_multicast_is_router(struct net_bridge *br)
494{
495 return br->multicast_router == 2 ||
496 (br->multicast_router == 1 &&
497 timer_pending(&br->multicast_router_timer));
498}
499
500static inline bool
501__br_multicast_querier_exists(struct net_bridge *br,
502 struct bridge_mcast_querier *querier)
503{
504 return time_is_before_jiffies(querier->delay_time) &&
505 (br->multicast_querier || timer_pending(&querier->timer));
506}
507
508static inline bool br_multicast_querier_exists(struct net_bridge *br,
509 struct ethhdr *eth)
510{
511 switch (eth->h_proto) {
512 case (htons(ETH_P_IP)):
513 return __br_multicast_querier_exists(br, &br->ip4_querier);
514#if IS_ENABLED(CONFIG_IPV6)
515 case (htons(ETH_P_IPV6)):
516 return __br_multicast_querier_exists(br, &br->ip6_querier);
517#endif
518 default:
519 return false;
520 }
521}
522#else
523static inline int br_multicast_rcv(struct net_bridge *br,
524 struct net_bridge_port *port,
525 struct sk_buff *skb)
526{
527 return 0;
528}
529
530static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
531 struct sk_buff *skb, u16 vid)
532{
533 return NULL;
534}
535
536static inline void br_multicast_add_port(struct net_bridge_port *port)
537{
538}
539
540static inline void br_multicast_del_port(struct net_bridge_port *port)
541{
542}
543
544static inline void br_multicast_enable_port(struct net_bridge_port *port)
545{
546}
547
548static inline void br_multicast_disable_port(struct net_bridge_port *port)
549{
550}
551
552static inline void br_multicast_init(struct net_bridge *br)
553{
554}
555
556static inline void br_multicast_open(struct net_bridge *br)
557{
558}
559
560static inline void br_multicast_stop(struct net_bridge *br)
561{
562}
563
564static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
565 struct sk_buff *skb)
566{
567}
568
569static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
570 struct sk_buff *skb,
571 struct sk_buff *skb2)
572{
573}
574static inline bool br_multicast_is_router(struct net_bridge *br)
575{
576 return 0;
577}
578static inline bool br_multicast_querier_exists(struct net_bridge *br,
579 struct ethhdr *eth)
580{
581 return false;
582}
583static inline void br_mdb_init(void)
584{
585}
586static inline void br_mdb_uninit(void)
587{
588}
589#endif
590
591
592#ifdef CONFIG_BRIDGE_VLAN_FILTERING
593extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
594 struct sk_buff *skb, u16 *vid);
595extern bool br_allowed_egress(struct net_bridge *br,
596 const struct net_port_vlans *v,
597 const struct sk_buff *skb);
598extern struct sk_buff *br_handle_vlan(struct net_bridge *br,
599 const struct net_port_vlans *v,
600 struct sk_buff *skb);
601extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
602extern int br_vlan_delete(struct net_bridge *br, u16 vid);
603extern void br_vlan_flush(struct net_bridge *br);
604extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
605extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
606extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
607extern void nbp_vlan_flush(struct net_bridge_port *port);
608extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
609
610static inline struct net_port_vlans *br_get_vlan_info(
611 const struct net_bridge *br)
612{
613 return rcu_dereference_rtnl(br->vlan_info);
614}
615
616static inline struct net_port_vlans *nbp_get_vlan_info(
617 const struct net_bridge_port *p)
618{
619 return rcu_dereference_rtnl(p->vlan_info);
620}
621
622
623
624
625static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
626{
627 int err = 0;
628
629 if (vlan_tx_tag_present(skb))
630 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
631 else {
632 *vid = 0;
633 err = -EINVAL;
634 }
635
636 return err;
637}
638
639static inline u16 br_get_pvid(const struct net_port_vlans *v)
640{
641
642
643
644 smp_rmb();
645 return v->pvid ?: VLAN_N_VID;
646}
647
648#else
649static inline bool br_allowed_ingress(struct net_bridge *br,
650 struct net_port_vlans *v,
651 struct sk_buff *skb,
652 u16 *vid)
653{
654 return true;
655}
656
657static inline bool br_allowed_egress(struct net_bridge *br,
658 const struct net_port_vlans *v,
659 const struct sk_buff *skb)
660{
661 return true;
662}
663
664static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
665 const struct net_port_vlans *v,
666 struct sk_buff *skb)
667{
668 return skb;
669}
670
671static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
672{
673 return -EOPNOTSUPP;
674}
675
676static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
677{
678 return -EOPNOTSUPP;
679}
680
681static inline void br_vlan_flush(struct net_bridge *br)
682{
683}
684
685static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
686{
687 return -EOPNOTSUPP;
688}
689
690static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
691{
692 return -EOPNOTSUPP;
693}
694
695static inline void nbp_vlan_flush(struct net_bridge_port *port)
696{
697}
698
699static inline struct net_port_vlans *br_get_vlan_info(
700 const struct net_bridge *br)
701{
702 return NULL;
703}
704static inline struct net_port_vlans *nbp_get_vlan_info(
705 const struct net_bridge_port *p)
706{
707 return NULL;
708}
709
710static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
711{
712 return false;
713}
714
715static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
716{
717 return 0;
718}
719static inline u16 br_get_pvid(const struct net_port_vlans *v)
720{
721 return VLAN_N_VID;
722}
723#endif
724
725
726#ifdef CONFIG_BRIDGE_NETFILTER
727extern int br_netfilter_init(void);
728extern void br_netfilter_fini(void);
729extern void br_netfilter_rtable_init(struct net_bridge *);
730#else
731#define br_netfilter_init() (0)
732#define br_netfilter_fini() do { } while(0)
733#define br_netfilter_rtable_init(x)
734#endif
735
736
737extern void br_log_state(const struct net_bridge_port *p);
738extern struct net_bridge_port *br_get_port(struct net_bridge *br,
739 u16 port_no);
740extern void br_init_port(struct net_bridge_port *p);
741extern void br_become_designated_port(struct net_bridge_port *p);
742
743extern void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
744extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
745extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
746extern int br_set_max_age(struct net_bridge *br, unsigned long x);
747
748
749
750extern void br_stp_enable_bridge(struct net_bridge *br);
751extern void br_stp_disable_bridge(struct net_bridge *br);
752extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
753extern void br_stp_enable_port(struct net_bridge_port *p);
754extern void br_stp_disable_port(struct net_bridge_port *p);
755extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
756extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
757extern void br_stp_set_bridge_priority(struct net_bridge *br,
758 u16 newprio);
759extern int br_stp_set_port_priority(struct net_bridge_port *p,
760 unsigned long newprio);
761extern int br_stp_set_path_cost(struct net_bridge_port *p,
762 unsigned long path_cost);
763extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
764
765
766struct stp_proto;
767extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
768 struct net_device *dev);
769
770
771extern void br_stp_timer_init(struct net_bridge *br);
772extern void br_stp_port_timer_init(struct net_bridge_port *p);
773extern unsigned long br_timer_value(const struct timer_list *timer);
774
775
776#if IS_ENABLED(CONFIG_ATM_LANE)
777extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
778#endif
779
780
781extern struct rtnl_link_ops br_link_ops;
782extern int br_netlink_init(void);
783extern void br_netlink_fini(void);
784extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
785extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
786extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
787extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
788 struct net_device *dev, u32 filter_mask);
789
790#ifdef CONFIG_SYSFS
791
792extern const struct sysfs_ops brport_sysfs_ops;
793extern int br_sysfs_addif(struct net_bridge_port *p);
794extern int br_sysfs_renameif(struct net_bridge_port *p);
795
796
797extern int br_sysfs_addbr(struct net_device *dev);
798extern void br_sysfs_delbr(struct net_device *dev);
799
800#else
801
802static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
803static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
804static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
805static inline void br_sysfs_delbr(struct net_device *dev) { return; }
806#endif
807
808#endif
809
