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bridge: use the bridge IP addr as source addr for querier
[linux-2.6.git] / net / bridge / br_private.h
blobe260710a01d4f9291277adae9c733475a110fb00
1 /*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
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.
11 */
12
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 /* Control of forwarding link local multicast */
35 #define BR_GROUPFWD_DEFAULT 0
36 /* Don't allow forwarding control protocols like STP and LLDP */
37 #define BR_GROUPFWD_RESTRICTED 0x4007u
38
39 /* Path to usermode spanning tree program */
40 #define BR_STP_PROG "/sbin/bridge-stp"
41
42 typedef struct bridge_id bridge_id;
43 typedef struct mac_addr mac_addr;
44 typedef __u16 port_id;
45
46 struct bridge_id
47 {
48 unsigned char prio[2];
49 unsigned char addr[6];
50 };
51
52 struct mac_addr
53 {
54 unsigned char addr[6];
55 };
56
57 struct 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 struct net_port_vlans {
70 u16 port_idx;
71 u16 pvid;
72 union {
73 struct net_bridge_port *port;
74 struct net_bridge *br;
75 } parent;
76 struct rcu_head rcu;
77 unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
78 unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
79 u16 num_vlans;
80 };
81
82 struct net_bridge_fdb_entry
83 {
84 struct hlist_node hlist;
85 struct net_bridge_port *dst;
86
87 struct rcu_head rcu;
88 unsigned long updated;
89 unsigned long used;
90 mac_addr addr;
91 unsigned char is_local;
92 unsigned char is_static;
93 __u16 vlan_id;
94 };
95
96 struct net_bridge_port_group {
97 struct net_bridge_port *port;
98 struct net_bridge_port_group __rcu *next;
99 struct hlist_node mglist;
100 struct rcu_head rcu;
101 struct timer_list timer;
102 struct br_ip addr;
103 unsigned char state;
104 };
105
106 struct net_bridge_mdb_entry
107 {
108 struct hlist_node hlist[2];
109 struct net_bridge *br;
110 struct net_bridge_port_group __rcu *ports;
111 struct rcu_head rcu;
112 struct timer_list timer;
113 struct br_ip addr;
114 bool mglist;
115 };
116
117 struct net_bridge_mdb_htable
118 {
119 struct hlist_head *mhash;
120 struct rcu_head rcu;
121 struct net_bridge_mdb_htable *old;
122 u32 size;
123 u32 max;
124 u32 secret;
125 u32 ver;
126 };
127
128 struct net_bridge_port
129 {
130 struct net_bridge *br;
131 struct net_device *dev;
132 struct list_head list;
133
134 /* STP */
135 u8 priority;
136 u8 state;
137 u16 port_no;
138 unsigned char topology_change_ack;
139 unsigned char config_pending;
140 port_id port_id;
141 port_id designated_port;
142 bridge_id designated_root;
143 bridge_id designated_bridge;
144 u32 path_cost;
145 u32 designated_cost;
146 unsigned long designated_age;
147
148 struct timer_list forward_delay_timer;
149 struct timer_list hold_timer;
150 struct timer_list message_age_timer;
151 struct kobject kobj;
152 struct rcu_head rcu;
153
154 unsigned long flags;
155 #define BR_HAIRPIN_MODE 0x00000001
156 #define BR_BPDU_GUARD 0x00000002
157 #define BR_ROOT_BLOCK 0x00000004
158 #define BR_MULTICAST_FAST_LEAVE 0x00000008
159 #define BR_ADMIN_COST 0x00000010
160
161 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
162 u32 multicast_startup_queries_sent;
163 unsigned char multicast_router;
164 struct timer_list multicast_router_timer;
165 struct timer_list multicast_query_timer;
166 struct hlist_head mglist;
167 struct hlist_node rlist;
168 #endif
169
170 #ifdef CONFIG_SYSFS
171 char sysfs_name[IFNAMSIZ];
172 #endif
173
174 #ifdef CONFIG_NET_POLL_CONTROLLER
175 struct netpoll *np;
176 #endif
177 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
178 struct net_port_vlans __rcu *vlan_info;
179 #endif
180 };
181
182 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
183
184 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
185 {
186 struct net_bridge_port *port =
187 rcu_dereference_rtnl(dev->rx_handler_data);
188
189 return br_port_exists(dev) ? port : NULL;
190 }
191
192 static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
193 {
194 return br_port_exists(dev) ?
195 rtnl_dereference(dev->rx_handler_data) : NULL;
196 }
197
198 struct br_cpu_netstats {
199 u64 rx_packets;
200 u64 rx_bytes;
201 u64 tx_packets;
202 u64 tx_bytes;
203 struct u64_stats_sync syncp;
204 };
205
206 struct net_bridge
207 {
208 spinlock_t lock;
209 struct list_head port_list;
210 struct net_device *dev;
211
212 struct br_cpu_netstats __percpu *stats;
213 spinlock_t hash_lock;
214 struct hlist_head hash[BR_HASH_SIZE];
215 #ifdef CONFIG_BRIDGE_NETFILTER
216 struct rtable fake_rtable;
217 bool nf_call_iptables;
218 bool nf_call_ip6tables;
219 bool nf_call_arptables;
220 #endif
221 u16 group_fwd_mask;
222
223 /* STP */
224 bridge_id designated_root;
225 bridge_id bridge_id;
226 u32 root_path_cost;
227 unsigned long max_age;
228 unsigned long hello_time;
229 unsigned long forward_delay;
230 unsigned long bridge_max_age;
231 unsigned long ageing_time;
232 unsigned long bridge_hello_time;
233 unsigned long bridge_forward_delay;
234
235 u8 group_addr[ETH_ALEN];
236 u16 root_port;
237
238 enum {
239 BR_NO_STP, /* no spanning tree */
240 BR_KERNEL_STP, /* old STP in kernel */
241 BR_USER_STP, /* new RSTP in userspace */
242 } stp_enabled;
243
244 unsigned char topology_change;
245 unsigned char topology_change_detected;
246
247 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
248 unsigned char multicast_router;
249
250 u8 multicast_disabled:1;
251 u8 multicast_querier:1;
252 u8 multicast_query_use_ifaddr:1;
253
254 u32 hash_elasticity;
255 u32 hash_max;
256
257 u32 multicast_last_member_count;
258 u32 multicast_startup_queries_sent;
259 u32 multicast_startup_query_count;
260
261 unsigned long multicast_last_member_interval;
262 unsigned long multicast_membership_interval;
263 unsigned long multicast_querier_interval;
264 unsigned long multicast_query_interval;
265 unsigned long multicast_query_response_interval;
266 unsigned long multicast_startup_query_interval;
267
268 spinlock_t multicast_lock;
269 struct net_bridge_mdb_htable __rcu *mdb;
270 struct hlist_head router_list;
271
272 struct timer_list multicast_router_timer;
273 struct timer_list multicast_querier_timer;
274 struct timer_list multicast_query_timer;
275 #endif
276
277 struct timer_list hello_timer;
278 struct timer_list tcn_timer;
279 struct timer_list topology_change_timer;
280 struct timer_list gc_timer;
281 struct kobject *ifobj;
282 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
283 u8 vlan_enabled;
284 struct net_port_vlans __rcu *vlan_info;
285 #endif
286 };
287
288 struct br_input_skb_cb {
289 struct net_device *brdev;
290 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
291 int igmp;
292 int mrouters_only;
293 #endif
294 };
295
296 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
297
298 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
299 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
300 #else
301 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
302 #endif
303
304 #define br_printk(level, br, format, args...) \
305 printk(level "%s: " format, (br)->dev->name, ##args)
306
307 #define br_err(__br, format, args...) \
308 br_printk(KERN_ERR, __br, format, ##args)
309 #define br_warn(__br, format, args...) \
310 br_printk(KERN_WARNING, __br, format, ##args)
311 #define br_notice(__br, format, args...) \
312 br_printk(KERN_NOTICE, __br, format, ##args)
313 #define br_info(__br, format, args...) \
314 br_printk(KERN_INFO, __br, format, ##args)
315
316 #define br_debug(br, format, args...) \
317 pr_debug("%s: " format, (br)->dev->name, ##args)
318
319 extern struct notifier_block br_device_notifier;
320
321 /* called under bridge lock */
322 static inline int br_is_root_bridge(const struct net_bridge *br)
323 {
324 return !memcmp(&br->bridge_id, &br->designated_root, 8);
325 }
326
327 /* br_device.c */
328 extern void br_dev_setup(struct net_device *dev);
329 extern void br_dev_delete(struct net_device *dev, struct list_head *list);
330 extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
331 struct net_device *dev);
332 #ifdef CONFIG_NET_POLL_CONTROLLER
333 static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
334 {
335 return br->dev->npinfo;
336 }
337
338 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
339 struct sk_buff *skb)
340 {
341 struct netpoll *np = p->np;
342
343 if (np)
344 netpoll_send_skb(np, skb);
345 }
346
347 extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp);
348 extern void br_netpoll_disable(struct net_bridge_port *p);
349 #else
350 static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
351 {
352 return NULL;
353 }
354
355 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
356 struct sk_buff *skb)
357 {
358 }
359
360 static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
361 {
362 return 0;
363 }
364
365 static inline void br_netpoll_disable(struct net_bridge_port *p)
366 {
367 }
368 #endif
369
370 /* br_fdb.c */
371 extern int br_fdb_init(void);
372 extern void br_fdb_fini(void);
373 extern void br_fdb_flush(struct net_bridge *br);
374 extern void br_fdb_changeaddr(struct net_bridge_port *p,
375 const unsigned char *newaddr);
376 extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
377 extern void br_fdb_cleanup(unsigned long arg);
378 extern void br_fdb_delete_by_port(struct net_bridge *br,
379 const struct net_bridge_port *p, int do_all);
380 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
381 const unsigned char *addr,
382 __u16 vid);
383 extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
384 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
385 unsigned long count, unsigned long off);
386 extern int br_fdb_insert(struct net_bridge *br,
387 struct net_bridge_port *source,
388 const unsigned char *addr,
389 u16 vid);
390 extern void br_fdb_update(struct net_bridge *br,
391 struct net_bridge_port *source,
392 const unsigned char *addr,
393 u16 vid);
394 extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid);
395
396 extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
397 struct net_device *dev,
398 const unsigned char *addr);
399 extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[],
400 struct net_device *dev,
401 const unsigned char *addr,
402 u16 nlh_flags);
403 extern int br_fdb_dump(struct sk_buff *skb,
404 struct netlink_callback *cb,
405 struct net_device *dev,
406 int idx);
407
408 /* br_forward.c */
409 extern void br_deliver(const struct net_bridge_port *to,
410 struct sk_buff *skb);
411 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
412 extern void br_forward(const struct net_bridge_port *to,
413 struct sk_buff *skb, struct sk_buff *skb0);
414 extern int br_forward_finish(struct sk_buff *skb);
415 extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
416 extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
417 struct sk_buff *skb2);
418
419 /* br_if.c */
420 extern void br_port_carrier_check(struct net_bridge_port *p);
421 extern int br_add_bridge(struct net *net, const char *name);
422 extern int br_del_bridge(struct net *net, const char *name);
423 extern void br_net_exit(struct net *net);
424 extern int br_add_if(struct net_bridge *br,
425 struct net_device *dev);
426 extern int br_del_if(struct net_bridge *br,
427 struct net_device *dev);
428 extern int br_min_mtu(const struct net_bridge *br);
429 extern netdev_features_t br_features_recompute(struct net_bridge *br,
430 netdev_features_t features);
431
432 /* br_input.c */
433 extern int br_handle_frame_finish(struct sk_buff *skb);
434 extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
435
436 /* br_ioctl.c */
437 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
438 extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
439
440 /* br_multicast.c */
441 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
442 extern unsigned int br_mdb_rehash_seq;
443 extern int br_multicast_rcv(struct net_bridge *br,
444 struct net_bridge_port *port,
445 struct sk_buff *skb);
446 extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
447 struct sk_buff *skb, u16 vid);
448 extern void br_multicast_add_port(struct net_bridge_port *port);
449 extern void br_multicast_del_port(struct net_bridge_port *port);
450 extern void br_multicast_enable_port(struct net_bridge_port *port);
451 extern void br_multicast_disable_port(struct net_bridge_port *port);
452 extern void br_multicast_init(struct net_bridge *br);
453 extern void br_multicast_open(struct net_bridge *br);
454 extern void br_multicast_stop(struct net_bridge *br);
455 extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
456 struct sk_buff *skb);
457 extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
458 struct sk_buff *skb, struct sk_buff *skb2);
459 extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
460 extern int br_multicast_set_port_router(struct net_bridge_port *p,
461 unsigned long val);
462 extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
463 extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
464 extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
465 extern struct net_bridge_mdb_entry *br_mdb_ip_get(
466 struct net_bridge_mdb_htable *mdb,
467 struct br_ip *dst);
468 extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br,
469 struct net_bridge_port *port, struct br_ip *group);
470 extern void br_multicast_free_pg(struct rcu_head *head);
471 extern struct net_bridge_port_group *br_multicast_new_port_group(
472 struct net_bridge_port *port,
473 struct br_ip *group,
474 struct net_bridge_port_group *next,
475 unsigned char state);
476 extern void br_mdb_init(void);
477 extern void br_mdb_uninit(void);
478 extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
479 struct br_ip *group, int type);
480
481 #define mlock_dereference(X, br) \
482 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
483
484 #if IS_ENABLED(CONFIG_IPV6)
485 #include <net/addrconf.h>
486 static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
487 {
488 if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr))
489 return 1;
490 return 0;
491 }
492 #endif
493
494 static inline bool br_multicast_is_router(struct net_bridge *br)
495 {
496 return br->multicast_router == 2 ||
497 (br->multicast_router == 1 &&
498 timer_pending(&br->multicast_router_timer));
499 }
500 #else
501 static inline int br_multicast_rcv(struct net_bridge *br,
502 struct net_bridge_port *port,
503 struct sk_buff *skb)
504 {
505 return 0;
506 }
507
508 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
509 struct sk_buff *skb, u16 vid)
510 {
511 return NULL;
512 }
513
514 static inline void br_multicast_add_port(struct net_bridge_port *port)
515 {
516 }
517
518 static inline void br_multicast_del_port(struct net_bridge_port *port)
519 {
520 }
521
522 static inline void br_multicast_enable_port(struct net_bridge_port *port)
523 {
524 }
525
526 static inline void br_multicast_disable_port(struct net_bridge_port *port)
527 {
528 }
529
530 static inline void br_multicast_init(struct net_bridge *br)
531 {
532 }
533
534 static inline void br_multicast_open(struct net_bridge *br)
535 {
536 }
537
538 static inline void br_multicast_stop(struct net_bridge *br)
539 {
540 }
541
542 static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
543 struct sk_buff *skb)
544 {
545 }
546
547 static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
548 struct sk_buff *skb,
549 struct sk_buff *skb2)
550 {
551 }
552 static inline bool br_multicast_is_router(struct net_bridge *br)
553 {
554 return 0;
555 }
556 static inline void br_mdb_init(void)
557 {
558 }
559 static inline void br_mdb_uninit(void)
560 {
561 }
562 #endif
563
564 /* br_vlan.c */
565 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
566 extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
567 struct sk_buff *skb, u16 *vid);
568 extern bool br_allowed_egress(struct net_bridge *br,
569 const struct net_port_vlans *v,
570 const struct sk_buff *skb);
571 extern struct sk_buff *br_handle_vlan(struct net_bridge *br,
572 const struct net_port_vlans *v,
573 struct sk_buff *skb);
574 extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
575 extern int br_vlan_delete(struct net_bridge *br, u16 vid);
576 extern void br_vlan_flush(struct net_bridge *br);
577 extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
578 extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
579 extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
580 extern void nbp_vlan_flush(struct net_bridge_port *port);
581 extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
582
583 static inline struct net_port_vlans *br_get_vlan_info(
584 const struct net_bridge *br)
585 {
586 return rcu_dereference_rtnl(br->vlan_info);
587 }
588
589 static inline struct net_port_vlans *nbp_get_vlan_info(
590 const struct net_bridge_port *p)
591 {
592 return rcu_dereference_rtnl(p->vlan_info);
593 }
594
595 /* Since bridge now depends on 8021Q module, but the time bridge sees the
596 * skb, the vlan tag will always be present if the frame was tagged.
597 */
598 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
599 {
600 int err = 0;
601
602 if (vlan_tx_tag_present(skb))
603 *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK;
604 else {
605 *vid = 0;
606 err = -EINVAL;
607 }
608
609 return err;
610 }
611
612 static inline u16 br_get_pvid(const struct net_port_vlans *v)
613 {
614 /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if
615 * vid wasn't set
616 */
617 smp_rmb();
618 return (v->pvid & VLAN_TAG_PRESENT) ?
619 (v->pvid & ~VLAN_TAG_PRESENT) :
620 VLAN_N_VID;
621 }
622
623 #else
624 static inline bool br_allowed_ingress(struct net_bridge *br,
625 struct net_port_vlans *v,
626 struct sk_buff *skb,
627 u16 *vid)
628 {
629 return true;
630 }
631
632 static inline bool br_allowed_egress(struct net_bridge *br,
633 const struct net_port_vlans *v,
634 const struct sk_buff *skb)
635 {
636 return true;
637 }
638
639 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
640 const struct net_port_vlans *v,
641 struct sk_buff *skb)
642 {
643 return skb;
644 }
645
646 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
647 {
648 return -EOPNOTSUPP;
649 }
650
651 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
652 {
653 return -EOPNOTSUPP;
654 }
655
656 static inline void br_vlan_flush(struct net_bridge *br)
657 {
658 }
659
660 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
661 {
662 return -EOPNOTSUPP;
663 }
664
665 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
666 {
667 return -EOPNOTSUPP;
668 }
669
670 static inline void nbp_vlan_flush(struct net_bridge_port *port)
671 {
672 }
673
674 static inline struct net_port_vlans *br_get_vlan_info(
675 const struct net_bridge *br)
676 {
677 return NULL;
678 }
679 static inline struct net_port_vlans *nbp_get_vlan_info(
680 const struct net_bridge_port *p)
681 {
682 return NULL;
683 }
684
685 static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
686 {
687 return false;
688 }
689
690 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
691 {
692 return 0;
693 }
694 static inline u16 br_get_pvid(const struct net_port_vlans *v)
695 {
696 return VLAN_N_VID; /* Returns invalid vid */
697 }
698 #endif
699
700 /* br_netfilter.c */
701 #ifdef CONFIG_BRIDGE_NETFILTER
702 extern int br_netfilter_init(void);
703 extern void br_netfilter_fini(void);
704 extern void br_netfilter_rtable_init(struct net_bridge *);
705 #else
706 #define br_netfilter_init() (0)
707 #define br_netfilter_fini() do { } while(0)
708 #define br_netfilter_rtable_init(x)
709 #endif
710
711 /* br_stp.c */
712 extern void br_log_state(const struct net_bridge_port *p);
713 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
714 u16 port_no);
715 extern void br_init_port(struct net_bridge_port *p);
716 extern void br_become_designated_port(struct net_bridge_port *p);
717
718 extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
719 extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
720 extern int br_set_max_age(struct net_bridge *br, unsigned long x);
721
722
723 /* br_stp_if.c */
724 extern void br_stp_enable_bridge(struct net_bridge *br);
725 extern void br_stp_disable_bridge(struct net_bridge *br);
726 extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
727 extern void br_stp_enable_port(struct net_bridge_port *p);
728 extern void br_stp_disable_port(struct net_bridge_port *p);
729 extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
730 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
731 extern void br_stp_set_bridge_priority(struct net_bridge *br,
732 u16 newprio);
733 extern int br_stp_set_port_priority(struct net_bridge_port *p,
734 unsigned long newprio);
735 extern int br_stp_set_path_cost(struct net_bridge_port *p,
736 unsigned long path_cost);
737 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
738
739 /* br_stp_bpdu.c */
740 struct stp_proto;
741 extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
742 struct net_device *dev);
743
744 /* br_stp_timer.c */
745 extern void br_stp_timer_init(struct net_bridge *br);
746 extern void br_stp_port_timer_init(struct net_bridge_port *p);
747 extern unsigned long br_timer_value(const struct timer_list *timer);
748
749 /* br.c */
750 #if IS_ENABLED(CONFIG_ATM_LANE)
751 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
752 #endif
753
754 /* br_netlink.c */
755 extern struct rtnl_link_ops br_link_ops;
756 extern int br_netlink_init(void);
757 extern void br_netlink_fini(void);
758 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
759 extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg);
760 extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg);
761 extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
762 struct net_device *dev, u32 filter_mask);
763
764 #ifdef CONFIG_SYSFS
765 /* br_sysfs_if.c */
766 extern const struct sysfs_ops brport_sysfs_ops;
767 extern int br_sysfs_addif(struct net_bridge_port *p);
768 extern int br_sysfs_renameif(struct net_bridge_port *p);
769
770 /* br_sysfs_br.c */
771 extern int br_sysfs_addbr(struct net_device *dev);
772 extern void br_sysfs_delbr(struct net_device *dev);
773
774 #else
775
776 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
777 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
778 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
779 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
780 #endif /* CONFIG_SYSFS */
781
782 #endif
Linus' kernel tree