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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/if_bridge.h>
Herbert Xu91d2c342010-06-10 16:12:50 +000018#include <linux/netpoll.h>
Eric Dumazet406818f2010-06-23 13:00:48 -070019#include <linux/u64_stats_sync.h>
Simon Wunderlich4adf0af2008-07-30 16:27:55 -070020#include <net/route.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
22#define BR_HASH_BITS 8
23#define BR_HASH_SIZE (1 << BR_HASH_BITS)
24
25#define BR_HOLD_TIME (1*HZ)
26
27#define BR_PORT_BITS 10
28#define BR_MAX_PORTS (1<<BR_PORT_BITS)
29
Stephen Hemminger9cde0702007-03-21 14:22:44 -070030#define BR_VERSION "2.3"
31
stephen hemminger515853c2011-10-03 18:14:46 +000032/* Control of forwarding link local multicast */
33#define BR_GROUPFWD_DEFAULT 0
34/* Don't allow forwarding control protocols like STP and LLDP */
35#define BR_GROUPFWD_RESTRICTED 0x4007u
36
Stephen Hemminger9cde0702007-03-21 14:22:44 -070037/* Path to usermode spanning tree program */
38#define BR_STP_PROG "/sbin/bridge-stp"
Stephen Hemminger8cbb512e2005-12-21 19:01:30 -080039
Linus Torvalds1da177e2005-04-16 15:20:36 -070040typedef struct bridge_id bridge_id;
41typedef struct mac_addr mac_addr;
42typedef __u16 port_id;
43
44struct bridge_id
45{
46 unsigned char prio[2];
47 unsigned char addr[6];
48};
49
50struct mac_addr
51{
52 unsigned char addr[6];
53};
54
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090055struct br_ip
56{
57 union {
58 __be32 ip4;
Eric Dumazetdfd56b82011-12-10 09:48:31 +000059#if IS_ENABLED(CONFIG_IPV6)
YOSHIFUJI Hideaki08b202b2010-04-23 01:54:22 +090060 struct in6_addr ip6;
61#endif
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090062 } u;
63 __be16 proto;
64};
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066struct net_bridge_fdb_entry
67{
68 struct hlist_node hlist;
69 struct net_bridge_port *dst;
70
71 struct rcu_head rcu;
stephen hemminger7cd88612011-04-04 14:03:28 +000072 unsigned long updated;
73 unsigned long used;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 mac_addr addr;
75 unsigned char is_local;
76 unsigned char is_static;
77};
78
Herbert Xueb1d1642010-02-27 19:41:45 +000079struct net_bridge_port_group {
80 struct net_bridge_port *port;
Eric Dumazete8051682010-11-15 06:38:10 +000081 struct net_bridge_port_group __rcu *next;
Herbert Xueb1d1642010-02-27 19:41:45 +000082 struct hlist_node mglist;
83 struct rcu_head rcu;
84 struct timer_list timer;
85 struct timer_list query_timer;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090086 struct br_ip addr;
Herbert Xueb1d1642010-02-27 19:41:45 +000087 u32 queries_sent;
88};
89
90struct net_bridge_mdb_entry
91{
92 struct hlist_node hlist[2];
Herbert Xueb1d1642010-02-27 19:41:45 +000093 struct net_bridge *br;
Eric Dumazete8051682010-11-15 06:38:10 +000094 struct net_bridge_port_group __rcu *ports;
Herbert Xueb1d1642010-02-27 19:41:45 +000095 struct rcu_head rcu;
96 struct timer_list timer;
97 struct timer_list query_timer;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090098 struct br_ip addr;
Herbert Xu8a870172011-02-12 01:05:42 -080099 bool mglist;
Herbert Xueb1d1642010-02-27 19:41:45 +0000100 u32 queries_sent;
101};
102
103struct net_bridge_mdb_htable
104{
105 struct hlist_head *mhash;
106 struct rcu_head rcu;
107 struct net_bridge_mdb_htable *old;
108 u32 size;
109 u32 max;
110 u32 secret;
111 u32 ver;
112};
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114struct net_bridge_port
115{
116 struct net_bridge *br;
117 struct net_device *dev;
118 struct list_head list;
119
120 /* STP */
121 u8 priority;
122 u8 state;
123 u16 port_no;
124 unsigned char topology_change_ack;
125 unsigned char config_pending;
126 port_id port_id;
127 port_id designated_port;
128 bridge_id designated_root;
129 bridge_id designated_bridge;
130 u32 path_cost;
131 u32 designated_cost;
stephen hemminger0c031502011-07-22 07:47:06 +0000132 unsigned long designated_age;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
134 struct timer_list forward_delay_timer;
135 struct timer_list hold_timer;
136 struct timer_list message_age_timer;
137 struct kobject kobj;
138 struct rcu_head rcu;
Fischer, Anna3982d3d2009-08-13 06:55:16 +0000139
140 unsigned long flags;
141#define BR_HAIRPIN_MODE 0x00000001
Herbert Xueb1d1642010-02-27 19:41:45 +0000142
143#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
144 u32 multicast_startup_queries_sent;
145 unsigned char multicast_router;
146 struct timer_list multicast_router_timer;
147 struct timer_list multicast_query_timer;
148 struct hlist_head mglist;
149 struct hlist_node rlist;
150#endif
Simon Arlotte0f43752010-05-10 09:31:11 +0000151
152#ifdef CONFIG_SYSFS
153 char sysfs_name[IFNAMSIZ];
154#endif
Herbert Xu91d2c342010-06-10 16:12:50 +0000155
156#ifdef CONFIG_NET_POLL_CONTROLLER
157 struct netpoll *np;
158#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159};
160
Jiri Pirkof350a0a82010-06-15 06:50:45 +0000161#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
162
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000163static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
164{
165 struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
166 return br_port_exists(dev) ? port : NULL;
167}
168
Eric Dumazetec1e5612010-11-15 06:38:14 +0000169static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000170{
Eric Dumazetec1e5612010-11-15 06:38:14 +0000171 return br_port_exists(dev) ?
172 rtnl_dereference(dev->rx_handler_data) : NULL;
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000173}
174
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700175struct br_cpu_netstats {
Eric Dumazet406818f2010-06-23 13:00:48 -0700176 u64 rx_packets;
177 u64 rx_bytes;
178 u64 tx_packets;
179 u64 tx_bytes;
180 struct u64_stats_sync syncp;
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700181};
182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183struct net_bridge
184{
185 spinlock_t lock;
186 struct list_head port_list;
187 struct net_device *dev;
stephen hemminger14bb4782010-03-02 13:32:09 +0000188
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700189 struct br_cpu_netstats __percpu *stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 spinlock_t hash_lock;
191 struct hlist_head hash[BR_HASH_SIZE];
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700192#ifdef CONFIG_BRIDGE_NETFILTER
193 struct rtable fake_rtable;
Patrick McHardy4df53d82010-07-02 09:32:57 +0200194 bool nf_call_iptables;
195 bool nf_call_ip6tables;
196 bool nf_call_arptables;
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700197#endif
Stephen Hemminger92c05742008-06-17 16:10:06 -0700198 unsigned long flags;
199#define BR_SET_MAC_ADDR 0x00000001
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
stephen hemminger515853c2011-10-03 18:14:46 +0000201 u16 group_fwd_mask;
202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 /* STP */
204 bridge_id designated_root;
205 bridge_id bridge_id;
206 u32 root_path_cost;
207 unsigned long max_age;
208 unsigned long hello_time;
209 unsigned long forward_delay;
210 unsigned long bridge_max_age;
211 unsigned long ageing_time;
212 unsigned long bridge_hello_time;
213 unsigned long bridge_forward_delay;
214
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800215 u8 group_addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 u16 root_port;
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700217
218 enum {
219 BR_NO_STP, /* no spanning tree */
220 BR_KERNEL_STP, /* old STP in kernel */
221 BR_USER_STP, /* new RSTP in userspace */
222 } stp_enabled;
223
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 unsigned char topology_change;
225 unsigned char topology_change_detected;
226
Herbert Xueb1d1642010-02-27 19:41:45 +0000227#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
228 unsigned char multicast_router;
229
230 u8 multicast_disabled:1;
231
232 u32 hash_elasticity;
233 u32 hash_max;
234
235 u32 multicast_last_member_count;
236 u32 multicast_startup_queries_sent;
237 u32 multicast_startup_query_count;
238
239 unsigned long multicast_last_member_interval;
240 unsigned long multicast_membership_interval;
241 unsigned long multicast_querier_interval;
242 unsigned long multicast_query_interval;
243 unsigned long multicast_query_response_interval;
244 unsigned long multicast_startup_query_interval;
245
246 spinlock_t multicast_lock;
Eric Dumazete8051682010-11-15 06:38:10 +0000247 struct net_bridge_mdb_htable __rcu *mdb;
Herbert Xueb1d1642010-02-27 19:41:45 +0000248 struct hlist_head router_list;
Herbert Xueb1d1642010-02-27 19:41:45 +0000249
250 struct timer_list multicast_router_timer;
251 struct timer_list multicast_querier_timer;
252 struct timer_list multicast_query_timer;
253#endif
254
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 struct timer_list hello_timer;
256 struct timer_list tcn_timer;
257 struct timer_list topology_change_timer;
258 struct timer_list gc_timer;
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400259 struct kobject *ifobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260};
261
Herbert Xu68b7c892010-02-27 19:41:40 +0000262struct br_input_skb_cb {
263 struct net_device *brdev;
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000264#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
Herbert Xueb1d1642010-02-27 19:41:45 +0000265 int igmp;
266 int mrouters_only;
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000267#endif
Herbert Xu68b7c892010-02-27 19:41:40 +0000268};
269
270#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
271
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000272#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
273# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
274#else
275# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
276#endif
277
stephen hemminger28a16c92010-05-10 09:31:09 +0000278#define br_printk(level, br, format, args...) \
279 printk(level "%s: " format, (br)->dev->name, ##args)
280
281#define br_err(__br, format, args...) \
282 br_printk(KERN_ERR, __br, format, ##args)
283#define br_warn(__br, format, args...) \
284 br_printk(KERN_WARNING, __br, format, ##args)
285#define br_notice(__br, format, args...) \
286 br_printk(KERN_NOTICE, __br, format, ##args)
287#define br_info(__br, format, args...) \
288 br_printk(KERN_INFO, __br, format, ##args)
289
290#define br_debug(br, format, args...) \
291 pr_debug("%s: " format, (br)->dev->name, ##args)
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293extern struct notifier_block br_device_notifier;
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800294extern const u8 br_group_address[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
296/* called under bridge lock */
297static inline int br_is_root_bridge(const struct net_bridge *br)
298{
299 return !memcmp(&br->bridge_id, &br->designated_root, 8);
300}
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302/* br_device.c */
303extern void br_dev_setup(struct net_device *dev);
stephen hemminger1ce5cce2011-10-06 11:19:41 +0000304extern void br_dev_delete(struct net_device *dev, struct list_head *list);
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000305extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
306 struct net_device *dev);
stephen hemmingercfb478d2010-05-10 09:31:08 +0000307#ifdef CONFIG_NET_POLL_CONTROLLER
Herbert Xu91d2c342010-06-10 16:12:50 +0000308static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
309{
310 return br->dev->npinfo;
311}
stephen hemmingercfb478d2010-05-10 09:31:08 +0000312
Herbert Xu91d2c342010-06-10 16:12:50 +0000313static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
314 struct sk_buff *skb)
315{
316 struct netpoll *np = p->np;
317
318 if (np)
319 netpoll_send_skb(np, skb);
320}
321
322extern int br_netpoll_enable(struct net_bridge_port *p);
323extern void br_netpoll_disable(struct net_bridge_port *p);
324#else
325static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
326{
327 return NULL;
328}
329
Herbert Xu9f70b0f2010-06-15 21:43:48 -0700330static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
Herbert Xu91d2c342010-06-10 16:12:50 +0000331 struct sk_buff *skb)
332{
333}
334
335static inline int br_netpoll_enable(struct net_bridge_port *p)
336{
337 return 0;
338}
339
340static inline void br_netpoll_disable(struct net_bridge_port *p)
341{
342}
stephen hemmingercfb478d2010-05-10 09:31:08 +0000343#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
345/* br_fdb.c */
Akinobu Mita87a596e2007-04-07 18:57:07 +0900346extern int br_fdb_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347extern void br_fdb_fini(void);
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700348extern void br_fdb_flush(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349extern void br_fdb_changeaddr(struct net_bridge_port *p,
350 const unsigned char *newaddr);
stephen hemminger43598812011-12-08 07:17:49 +0000351extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352extern void br_fdb_cleanup(unsigned long arg);
353extern void br_fdb_delete_by_port(struct net_bridge *br,
Stephen Hemminger1a620692006-10-12 14:45:38 -0700354 const struct net_bridge_port *p, int do_all);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
356 const unsigned char *addr);
Michał Mirosławda678292009-06-05 05:35:28 +0000357extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900358extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 unsigned long count, unsigned long off);
360extern int br_fdb_insert(struct net_bridge *br,
361 struct net_bridge_port *source,
362 const unsigned char *addr);
363extern void br_fdb_update(struct net_bridge *br,
364 struct net_bridge_port *source,
365 const unsigned char *addr);
stephen hemmingerb078f0d2011-04-04 14:03:30 +0000366extern int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb);
stephen hemminger36fd2b62011-04-04 14:03:31 +0000367extern int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
368extern int br_fdb_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
370/* br_forward.c */
371extern void br_deliver(const struct net_bridge_port *to,
372 struct sk_buff *skb);
373extern int br_dev_queue_push_xmit(struct sk_buff *skb);
374extern void br_forward(const struct net_bridge_port *to,
Michael Braun7f7708f2010-03-16 00:26:22 -0700375 struct sk_buff *skb, struct sk_buff *skb0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376extern int br_forward_finish(struct sk_buff *skb);
Herbert Xue081e1e2007-09-16 16:20:48 -0700377extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
Herbert Xub33084b2010-02-27 19:41:41 +0000378extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
379 struct sk_buff *skb2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
381/* br_if.c */
Stephen Hemminger269def72007-02-22 01:10:18 -0800382extern void br_port_carrier_check(struct net_bridge_port *p);
Alexey Dobriyan4aa678b2008-09-08 16:19:58 -0700383extern int br_add_bridge(struct net *net, const char *name);
384extern int br_del_bridge(struct net *net, const char *name);
Alexey Dobriyan712d6952008-09-08 16:20:18 -0700385extern void br_net_exit(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386extern int br_add_if(struct net_bridge *br,
387 struct net_device *dev);
388extern int br_del_if(struct net_bridge *br,
389 struct net_device *dev);
390extern int br_min_mtu(const struct net_bridge *br);
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000391extern netdev_features_t br_features_recompute(struct net_bridge *br,
392 netdev_features_t features);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393
394/* br_input.c */
395extern int br_handle_frame_finish(struct sk_buff *skb);
Jiri Pirko8a4eb572011-03-12 03:14:39 +0000396extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397
398/* br_ioctl.c */
399extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
Eric W. Biederman881d9662007-09-17 11:56:21 -0700400extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Herbert Xueb1d1642010-02-27 19:41:45 +0000402/* br_multicast.c */
403#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
404extern int br_multicast_rcv(struct net_bridge *br,
405 struct net_bridge_port *port,
406 struct sk_buff *skb);
407extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
408 struct sk_buff *skb);
409extern void br_multicast_add_port(struct net_bridge_port *port);
410extern void br_multicast_del_port(struct net_bridge_port *port);
411extern void br_multicast_enable_port(struct net_bridge_port *port);
412extern void br_multicast_disable_port(struct net_bridge_port *port);
413extern void br_multicast_init(struct net_bridge *br);
414extern void br_multicast_open(struct net_bridge *br);
415extern void br_multicast_stop(struct net_bridge *br);
Herbert Xu5cb5e942010-02-27 19:41:46 +0000416extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
417 struct sk_buff *skb);
418extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
419 struct sk_buff *skb, struct sk_buff *skb2);
Herbert Xu0909e112010-02-27 19:41:49 +0000420extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
421extern int br_multicast_set_port_router(struct net_bridge_port *p,
422 unsigned long val);
Herbert Xu561f1102010-02-27 19:41:50 +0000423extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
Herbert Xub1951672010-02-27 19:41:51 +0000424extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000425
426static inline bool br_multicast_is_router(struct net_bridge *br)
427{
428 return br->multicast_router == 2 ||
429 (br->multicast_router == 1 &&
430 timer_pending(&br->multicast_router_timer));
431}
Herbert Xueb1d1642010-02-27 19:41:45 +0000432#else
433static inline int br_multicast_rcv(struct net_bridge *br,
434 struct net_bridge_port *port,
435 struct sk_buff *skb)
436{
437 return 0;
438}
439
440static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
441 struct sk_buff *skb)
442{
443 return NULL;
444}
445
446static inline void br_multicast_add_port(struct net_bridge_port *port)
447{
448}
449
450static inline void br_multicast_del_port(struct net_bridge_port *port)
451{
452}
453
454static inline void br_multicast_enable_port(struct net_bridge_port *port)
455{
456}
457
458static inline void br_multicast_disable_port(struct net_bridge_port *port)
459{
460}
461
462static inline void br_multicast_init(struct net_bridge *br)
463{
464}
465
466static inline void br_multicast_open(struct net_bridge *br)
467{
468}
469
470static inline void br_multicast_stop(struct net_bridge *br)
471{
472}
Herbert Xu5cb5e942010-02-27 19:41:46 +0000473
474static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
475 struct sk_buff *skb)
476{
477}
478
479static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
480 struct sk_buff *skb,
481 struct sk_buff *skb2)
482{
483}
Herbert Xueb1d1642010-02-27 19:41:45 +0000484static inline bool br_multicast_is_router(struct net_bridge *br)
485{
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000486 return 0;
Herbert Xueb1d1642010-02-27 19:41:45 +0000487}
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000488#endif
Herbert Xueb1d1642010-02-27 19:41:45 +0000489
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490/* br_netfilter.c */
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700491#ifdef CONFIG_BRIDGE_NETFILTER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492extern int br_netfilter_init(void);
493extern void br_netfilter_fini(void);
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700494extern void br_netfilter_rtable_init(struct net_bridge *);
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700495#else
496#define br_netfilter_init() (0)
497#define br_netfilter_fini() do { } while(0)
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700498#define br_netfilter_rtable_init(x)
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700499#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
501/* br_stp.c */
502extern void br_log_state(const struct net_bridge_port *p);
503extern struct net_bridge_port *br_get_port(struct net_bridge *br,
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900504 u16 port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505extern void br_init_port(struct net_bridge_port *p);
506extern void br_become_designated_port(struct net_bridge_port *p);
507
stephen hemminger14f98f22011-04-04 14:03:33 +0000508extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
509extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
510extern int br_set_max_age(struct net_bridge *br, unsigned long x);
511
512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513/* br_stp_if.c */
514extern void br_stp_enable_bridge(struct net_bridge *br);
515extern void br_stp_disable_bridge(struct net_bridge *br);
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700516extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517extern void br_stp_enable_port(struct net_bridge_port *p);
518extern void br_stp_disable_port(struct net_bridge_port *p);
stephen hemmingeredf947f2011-03-24 13:24:01 +0000519extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800520extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521extern void br_stp_set_bridge_priority(struct net_bridge *br,
522 u16 newprio);
stephen hemminger14f98f22011-04-04 14:03:33 +0000523extern int br_stp_set_port_priority(struct net_bridge_port *p,
524 unsigned long newprio);
525extern int br_stp_set_path_cost(struct net_bridge_port *p,
526 unsigned long path_cost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
528
529/* br_stp_bpdu.c */
Patrick McHardy7c85fbf2008-07-05 21:25:56 -0700530struct stp_proto;
531extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
532 struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
534/* br_stp_timer.c */
535extern void br_stp_timer_init(struct net_bridge *br);
536extern void br_stp_port_timer_init(struct net_bridge_port *p);
537extern unsigned long br_timer_value(const struct timer_list *timer);
538
539/* br.c */
Igor Maraviće6373c42011-12-12 02:58:25 +0000540#if IS_ENABLED(CONFIG_ATM_LANE)
Michał Mirosławda678292009-06-05 05:35:28 +0000541extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
542#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700544/* br_netlink.c */
Thomas Graf32fe21c2007-03-22 11:59:03 -0700545extern int br_netlink_init(void);
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700546extern void br_netlink_fini(void);
547extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
548
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549#ifdef CONFIG_SYSFS
550/* br_sysfs_if.c */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100551extern const struct sysfs_ops brport_sysfs_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552extern int br_sysfs_addif(struct net_bridge_port *p);
Simon Arlotte0f43752010-05-10 09:31:11 +0000553extern int br_sysfs_renameif(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554
555/* br_sysfs_br.c */
556extern int br_sysfs_addbr(struct net_device *dev);
557extern void br_sysfs_delbr(struct net_device *dev);
558
559#else
560
561#define br_sysfs_addif(p) (0)
Simon Arlotte0f43752010-05-10 09:31:11 +0000562#define br_sysfs_renameif(p) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563#define br_sysfs_addbr(dev) (0)
564#define br_sysfs_delbr(dev) do { } while(0)
565#endif /* CONFIG_SYSFS */
566
567#endif