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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#define BR_GROUPFWD_8021AD 0xB801u
40
41
42#define BR_STP_PROG "/sbin/bridge-stp"
43
44typedef struct bridge_id bridge_id;
45typedef struct mac_addr mac_addr;
46typedef __u16 port_id;
47
48struct bridge_id
49{
50 unsigned char prio[2];
51 unsigned char addr[ETH_ALEN];
52};
53
54struct mac_addr
55{
56 unsigned char addr[ETH_ALEN];
57};
58
59#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
60
61struct bridge_mcast_own_query {
62 struct timer_list timer;
63 u32 startup_sent;
64};
65
66
67struct bridge_mcast_other_query {
68 struct timer_list timer;
69 unsigned long delay_time;
70};
71
72
73struct bridge_mcast_querier {
74 struct br_ip addr;
75 struct net_bridge_port __rcu *port;
76};
77#endif
78
79struct net_port_vlans {
80 u16 port_idx;
81 u16 pvid;
82 union {
83 struct net_bridge_port *port;
84 struct net_bridge *br;
85 } parent;
86 struct rcu_head rcu;
87 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
88 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
89 u16 num_vlans;
90};
91
92struct net_bridge_fdb_entry
93{
94 struct hlist_node hlist;
95 struct net_bridge_port *dst;
96
97 struct rcu_head rcu;
98 unsigned long updated;
99 unsigned long used;
100 mac_addr addr;
101 unsigned char is_local:1,
102 is_static:1,
103 added_by_user:1,
104 added_by_external_learn:1;
105 __u16 vlan_id;
106};
107
108struct net_bridge_port_group {
109 struct net_bridge_port *port;
110 struct net_bridge_port_group __rcu *next;
111 struct hlist_node mglist;
112 struct rcu_head rcu;
113 struct timer_list timer;
114 struct br_ip addr;
115 unsigned char state;
116};
117
118struct net_bridge_mdb_entry
119{
120 struct hlist_node hlist[2];
121 struct net_bridge *br;
122 struct net_bridge_port_group __rcu *ports;
123 struct rcu_head rcu;
124 struct timer_list timer;
125 struct br_ip addr;
126 bool mglist;
127};
128
129struct net_bridge_mdb_htable
130{
131 struct hlist_head *mhash;
132 struct rcu_head rcu;
133 struct net_bridge_mdb_htable *old;
134 u32 size;
135 u32 max;
136 u32 secret;
137 u32 ver;
138};
139
140struct net_bridge_port
141{
142 struct net_bridge *br;
143 struct net_device *dev;
144 struct list_head list;
145
146
147 u8 priority;
148 u8 state;
149 u16 port_no;
150 unsigned char topology_change_ack;
151 unsigned char config_pending;
152 port_id port_id;
153 port_id designated_port;
154 bridge_id designated_root;
155 bridge_id designated_bridge;
156 u32 path_cost;
157 u32 designated_cost;
158 unsigned long designated_age;
159
160 struct timer_list forward_delay_timer;
161 struct timer_list hold_timer;
162 struct timer_list message_age_timer;
163 struct kobject kobj;
164 struct rcu_head rcu;
165
166 unsigned long flags;
167
168#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
169 struct bridge_mcast_own_query ip4_own_query;
170#if IS_ENABLED(CONFIG_IPV6)
171 struct bridge_mcast_own_query ip6_own_query;
172#endif
173 unsigned char multicast_router;
174 struct timer_list multicast_router_timer;
175 struct hlist_head mglist;
176 struct hlist_node rlist;
177#endif
178
179#ifdef CONFIG_SYSFS
180 char sysfs_name[IFNAMSIZ];
181#endif
182
183#ifdef CONFIG_NET_POLL_CONTROLLER
184 struct netpoll *np;
185#endif
186#ifdef CONFIG_BRIDGE_VLAN_FILTERING
187 struct net_port_vlans __rcu *vlan_info;
188#endif
189};
190
191#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
192#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
193
194#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
195
196static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
197{
198 return rcu_dereference(dev->rx_handler_data);
199}
200
201static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
202{
203 return br_port_exists(dev) ?
204 rtnl_dereference(dev->rx_handler_data) : NULL;
205}
206
207struct net_bridge
208{
209 spinlock_t lock;
210 struct list_head port_list;
211 struct net_device *dev;
212
213 struct pcpu_sw_netstats __percpu *stats;
214 spinlock_t hash_lock;
215 struct hlist_head hash[BR_HASH_SIZE];
216#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
217 struct rtable fake_rtable;
218 bool nf_call_iptables;
219 bool nf_call_ip6tables;
220 bool nf_call_arptables;
221#endif
222 u16 group_fwd_mask;
223 u16 group_fwd_mask_required;
224
225
226 bridge_id designated_root;
227 bridge_id bridge_id;
228 u32 root_path_cost;
229 unsigned long max_age;
230 unsigned long hello_time;
231 unsigned long forward_delay;
232 unsigned long bridge_max_age;
233 unsigned long ageing_time;
234 unsigned long bridge_hello_time;
235 unsigned long bridge_forward_delay;
236
237 u8 group_addr[ETH_ALEN];
238 bool group_addr_set;
239 u16 root_port;
240
241 enum {
242 BR_NO_STP,
243 BR_KERNEL_STP,
244 BR_USER_STP,
245 } stp_enabled;
246
247 unsigned char topology_change;
248 unsigned char topology_change_detected;
249
250#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
251 unsigned char multicast_router;
252
253 u8 multicast_disabled:1;
254 u8 multicast_querier:1;
255 u8 multicast_query_use_ifaddr:1;
256
257 u32 hash_elasticity;
258 u32 hash_max;
259
260 u32 multicast_last_member_count;
261 u32 multicast_startup_query_count;
262
263 unsigned long multicast_last_member_interval;
264 unsigned long multicast_membership_interval;
265 unsigned long multicast_querier_interval;
266 unsigned long multicast_query_interval;
267 unsigned long multicast_query_response_interval;
268 unsigned long multicast_startup_query_interval;
269
270 spinlock_t multicast_lock;
271 struct net_bridge_mdb_htable __rcu *mdb;
272 struct hlist_head router_list;
273
274 struct timer_list multicast_router_timer;
275 struct bridge_mcast_other_query ip4_other_query;
276 struct bridge_mcast_own_query ip4_own_query;
277 struct bridge_mcast_querier ip4_querier;
278#if IS_ENABLED(CONFIG_IPV6)
279 struct bridge_mcast_other_query ip6_other_query;
280 struct bridge_mcast_own_query ip6_own_query;
281 struct bridge_mcast_querier ip6_querier;
282#endif
283#endif
284
285 struct timer_list hello_timer;
286 struct timer_list tcn_timer;
287 struct timer_list topology_change_timer;
288 struct timer_list gc_timer;
289 struct kobject *ifobj;
290 u32 auto_cnt;
291#ifdef CONFIG_BRIDGE_VLAN_FILTERING
292 u8 vlan_enabled;
293 __be16 vlan_proto;
294 u16 default_pvid;
295 struct net_port_vlans __rcu *vlan_info;
296#endif
297};
298
299struct br_input_skb_cb {
300 struct net_device *brdev;
301
302#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
303 int igmp;
304 int mrouters_only;
305#endif
306
307 u16 frag_max_size;
308 bool proxyarp_replied;
309
310#ifdef CONFIG_BRIDGE_VLAN_FILTERING
311 bool vlan_filtered;
312#endif
313};
314
315#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
316
317#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
318# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
319#else
320# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
321#endif
322
323#define br_printk(level, br, format, args...) \
324 printk(level "%s: " format, (br)->dev->name, ##args)
325
326#define br_err(__br, format, args...) \
327 br_printk(KERN_ERR, __br, format, ##args)
328#define br_warn(__br, format, args...) \
329 br_printk(KERN_WARNING, __br, format, ##args)
330#define br_notice(__br, format, args...) \
331 br_printk(KERN_NOTICE, __br, format, ##args)
332#define br_info(__br, format, args...) \
333 br_printk(KERN_INFO, __br, format, ##args)
334
335#define br_debug(br, format, args...) \
336 pr_debug("%s: " format, (br)->dev->name, ##args)
337
338
339static inline int br_is_root_bridge(const struct net_bridge *br)
340{
341 return !memcmp(&br->bridge_id, &br->designated_root, 8);
342}
343
344
345void br_dev_setup(struct net_device *dev);
346void br_dev_delete(struct net_device *dev, struct list_head *list);
347netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
348#ifdef CONFIG_NET_POLL_CONTROLLER
349static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
350 struct sk_buff *skb)
351{
352 struct netpoll *np = p->np;
353
354 if (np)
355 netpoll_send_skb(np, skb);
356}
357
358int br_netpoll_enable(struct net_bridge_port *p);
359void br_netpoll_disable(struct net_bridge_port *p);
360#else
361static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
362 struct sk_buff *skb)
363{
364}
365
366static inline int br_netpoll_enable(struct net_bridge_port *p)
367{
368 return 0;
369}
370
371static inline void br_netpoll_disable(struct net_bridge_port *p)
372{
373}
374#endif
375
376
377int br_fdb_init(void);
378void br_fdb_fini(void);
379void br_fdb_flush(struct net_bridge *br);
380void br_fdb_find_delete_local(struct net_bridge *br,
381 const struct net_bridge_port *p,
382 const unsigned char *addr, u16 vid);
383void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
384void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
385void br_fdb_cleanup(unsigned long arg);
386void br_fdb_delete_by_port(struct net_bridge *br,
387 const struct net_bridge_port *p, int do_all);
388struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
389 const unsigned char *addr, __u16 vid);
390int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
391int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
392 unsigned long off);
393int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
394 const unsigned char *addr, u16 vid);
395void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
396 const unsigned char *addr, u16 vid, bool added_by_user);
397
398int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
399 struct net_device *dev, const unsigned char *addr, u16 vid);
400int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
401 const unsigned char *addr, u16 vid, u16 nlh_flags);
402int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
403 struct net_device *dev, struct net_device *fdev, int idx);
404int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
405void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
406int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
407 const unsigned char *addr, u16 vid);
408int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
409 const unsigned char *addr, u16 vid);
410
411
412void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
413int br_dev_queue_push_xmit(struct sock *sk, struct sk_buff *skb);
414void br_forward(const struct net_bridge_port *to,
415 struct sk_buff *skb, struct sk_buff *skb0);
416int br_forward_finish(struct sock *sk, struct sk_buff *skb);
417void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
418void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
419 struct sk_buff *skb2, bool unicast);
420
421
422void br_port_carrier_check(struct net_bridge_port *p);
423int br_add_bridge(struct net *net, const char *name);
424int br_del_bridge(struct net *net, const char *name);
425int br_add_if(struct net_bridge *br, struct net_device *dev);
426int br_del_if(struct net_bridge *br, struct net_device *dev);
427int br_min_mtu(const struct net_bridge *br);
428netdev_features_t br_features_recompute(struct net_bridge *br,
429 netdev_features_t features);
430void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
431void br_manage_promisc(struct net_bridge *br);
432
433
434int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb);
435rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
436
437static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
438{
439 return rcu_dereference(dev->rx_handler) == br_handle_frame;
440}
441
442static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
443{
444 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
445}
446
447
448int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
449int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
450 void __user *arg);
451
452
453#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
454extern unsigned int br_mdb_rehash_seq;
455int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
456 struct sk_buff *skb, u16 vid);
457struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
458 struct sk_buff *skb, u16 vid);
459void br_multicast_add_port(struct net_bridge_port *port);
460void br_multicast_del_port(struct net_bridge_port *port);
461void br_multicast_enable_port(struct net_bridge_port *port);
462void br_multicast_disable_port(struct net_bridge_port *port);
463void br_multicast_init(struct net_bridge *br);
464void br_multicast_open(struct net_bridge *br);
465void br_multicast_stop(struct net_bridge *br);
466void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
467 struct sk_buff *skb);
468void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
469 struct sk_buff *skb, struct sk_buff *skb2);
470int br_multicast_set_router(struct net_bridge *br, unsigned long val);
471int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
472int br_multicast_toggle(struct net_bridge *br, unsigned long val);
473int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
474int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
475struct net_bridge_mdb_entry *
476br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
477struct net_bridge_mdb_entry *
478br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
479 struct br_ip *group);
480void br_multicast_free_pg(struct rcu_head *head);
481struct net_bridge_port_group *
482br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
483 struct net_bridge_port_group __rcu *next,
484 unsigned char state);
485void br_mdb_init(void);
486void br_mdb_uninit(void);
487void 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_other_query *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_other_query);
514#if IS_ENABLED(CONFIG_IPV6)
515 case (htons(ETH_P_IPV6)):
516 return __br_multicast_querier_exists(br, &br->ip6_other_query);
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 u16 vid)
527{
528 return 0;
529}
530
531static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
532 struct sk_buff *skb, u16 vid)
533{
534 return NULL;
535}
536
537static inline void br_multicast_add_port(struct net_bridge_port *port)
538{
539}
540
541static inline void br_multicast_del_port(struct net_bridge_port *port)
542{
543}
544
545static inline void br_multicast_enable_port(struct net_bridge_port *port)
546{
547}
548
549static inline void br_multicast_disable_port(struct net_bridge_port *port)
550{
551}
552
553static inline void br_multicast_init(struct net_bridge *br)
554{
555}
556
557static inline void br_multicast_open(struct net_bridge *br)
558{
559}
560
561static inline void br_multicast_stop(struct net_bridge *br)
562{
563}
564
565static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
566 struct sk_buff *skb)
567{
568}
569
570static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
571 struct sk_buff *skb,
572 struct sk_buff *skb2)
573{
574}
575static inline bool br_multicast_is_router(struct net_bridge *br)
576{
577 return 0;
578}
579static inline bool br_multicast_querier_exists(struct net_bridge *br,
580 struct ethhdr *eth)
581{
582 return false;
583}
584static inline void br_mdb_init(void)
585{
586}
587static inline void br_mdb_uninit(void)
588{
589}
590#endif
591
592
593#ifdef CONFIG_BRIDGE_VLAN_FILTERING
594bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
595 struct sk_buff *skb, u16 *vid);
596bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
597 const struct sk_buff *skb);
598bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
599struct sk_buff *br_handle_vlan(struct net_bridge *br,
600 const struct net_port_vlans *v,
601 struct sk_buff *skb);
602int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
603int br_vlan_delete(struct net_bridge *br, u16 vid);
604void br_vlan_flush(struct net_bridge *br);
605bool br_vlan_find(struct net_bridge *br, u16 vid);
606void br_recalculate_fwd_mask(struct net_bridge *br);
607int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
608int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
609int br_vlan_init(struct net_bridge *br);
610int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
611int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
612int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
613void nbp_vlan_flush(struct net_bridge_port *port);
614bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
615int nbp_vlan_init(struct net_bridge_port *port);
616
617static inline struct net_port_vlans *br_get_vlan_info(
618 const struct net_bridge *br)
619{
620 return rcu_dereference_rtnl(br->vlan_info);
621}
622
623static inline struct net_port_vlans *nbp_get_vlan_info(
624 const struct net_bridge_port *p)
625{
626 return rcu_dereference_rtnl(p->vlan_info);
627}
628
629
630
631
632static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
633{
634 int err = 0;
635
636 if (skb_vlan_tag_present(skb))
637 *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
638 else {
639 *vid = 0;
640 err = -EINVAL;
641 }
642
643 return err;
644}
645
646static inline u16 br_get_pvid(const struct net_port_vlans *v)
647{
648 if (!v)
649 return 0;
650
651 smp_rmb();
652 return v->pvid;
653}
654
655static inline int br_vlan_enabled(struct net_bridge *br)
656{
657 return br->vlan_enabled;
658}
659#else
660static inline bool br_allowed_ingress(struct net_bridge *br,
661 struct net_port_vlans *v,
662 struct sk_buff *skb,
663 u16 *vid)
664{
665 return true;
666}
667
668static inline bool br_allowed_egress(struct net_bridge *br,
669 const struct net_port_vlans *v,
670 const struct sk_buff *skb)
671{
672 return true;
673}
674
675static inline bool br_should_learn(struct net_bridge_port *p,
676 struct sk_buff *skb, u16 *vid)
677{
678 return true;
679}
680
681static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
682 const struct net_port_vlans *v,
683 struct sk_buff *skb)
684{
685 return skb;
686}
687
688static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
689{
690 return -EOPNOTSUPP;
691}
692
693static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
694{
695 return -EOPNOTSUPP;
696}
697
698static inline void br_vlan_flush(struct net_bridge *br)
699{
700}
701
702static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
703{
704 return false;
705}
706
707static inline void br_recalculate_fwd_mask(struct net_bridge *br)
708{
709}
710
711static inline int br_vlan_init(struct net_bridge *br)
712{
713 return 0;
714}
715
716static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
717{
718 return -EOPNOTSUPP;
719}
720
721static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
722{
723 return -EOPNOTSUPP;
724}
725
726static inline void nbp_vlan_flush(struct net_bridge_port *port)
727{
728}
729
730static inline struct net_port_vlans *br_get_vlan_info(
731 const struct net_bridge *br)
732{
733 return NULL;
734}
735static inline struct net_port_vlans *nbp_get_vlan_info(
736 const struct net_bridge_port *p)
737{
738 return NULL;
739}
740
741static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
742{
743 return false;
744}
745
746static inline int nbp_vlan_init(struct net_bridge_port *port)
747{
748 return 0;
749}
750
751static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
752{
753 return 0;
754}
755static inline u16 br_get_pvid(const struct net_port_vlans *v)
756{
757 return 0;
758}
759
760static inline int br_vlan_enabled(struct net_bridge *br)
761{
762 return 0;
763}
764#endif
765
766struct nf_br_ops {
767 int (*br_dev_xmit_hook)(struct sk_buff *skb);
768};
769extern const struct nf_br_ops __rcu *nf_br_ops;
770
771
772#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
773int br_nf_core_init(void);
774void br_nf_core_fini(void);
775void br_netfilter_rtable_init(struct net_bridge *);
776#else
777static inline int br_nf_core_init(void) { return 0; }
778static inline void br_nf_core_fini(void) {}
779#define br_netfilter_rtable_init(x)
780#endif
781
782
783void br_log_state(const struct net_bridge_port *p);
784void br_set_state(struct net_bridge_port *p, unsigned int state);
785struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
786void br_init_port(struct net_bridge_port *p);
787void br_become_designated_port(struct net_bridge_port *p);
788
789void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
790int br_set_forward_delay(struct net_bridge *br, unsigned long x);
791int br_set_hello_time(struct net_bridge *br, unsigned long x);
792int br_set_max_age(struct net_bridge *br, unsigned long x);
793
794
795
796void br_stp_enable_bridge(struct net_bridge *br);
797void br_stp_disable_bridge(struct net_bridge *br);
798void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
799void br_stp_enable_port(struct net_bridge_port *p);
800void br_stp_disable_port(struct net_bridge_port *p);
801bool br_stp_recalculate_bridge_id(struct net_bridge *br);
802void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
803void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
804int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
805int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
806ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
807
808
809struct stp_proto;
810void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
811 struct net_device *dev);
812
813
814void br_stp_timer_init(struct net_bridge *br);
815void br_stp_port_timer_init(struct net_bridge_port *p);
816unsigned long br_timer_value(const struct timer_list *timer);
817
818
819#if IS_ENABLED(CONFIG_ATM_LANE)
820extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
821#endif
822
823
824extern struct rtnl_link_ops br_link_ops;
825int br_netlink_init(void);
826void br_netlink_fini(void);
827void br_ifinfo_notify(int event, struct net_bridge_port *port);
828int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
829int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
830int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
831 u32 filter_mask, int nlflags);
832
833#ifdef CONFIG_SYSFS
834
835extern const struct sysfs_ops brport_sysfs_ops;
836int br_sysfs_addif(struct net_bridge_port *p);
837int br_sysfs_renameif(struct net_bridge_port *p);
838
839
840int br_sysfs_addbr(struct net_device *dev);
841void br_sysfs_delbr(struct net_device *dev);
842
843#else
844
845static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
846static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
847static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
848static inline void br_sysfs_delbr(struct net_device *dev) { return; }
849#endif
850
851#endif
852
