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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;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090085 struct br_ip addr;
Herbert Xueb1d1642010-02-27 19:41:45 +000086};
87
88struct net_bridge_mdb_entry
89{
90 struct hlist_node hlist[2];
Herbert Xueb1d1642010-02-27 19:41:45 +000091 struct net_bridge *br;
Eric Dumazete8051682010-11-15 06:38:10 +000092 struct net_bridge_port_group __rcu *ports;
Herbert Xueb1d1642010-02-27 19:41:45 +000093 struct rcu_head rcu;
94 struct timer_list timer;
YOSHIFUJI Hideaki8ef2a9a2010-04-18 12:42:07 +090095 struct br_ip addr;
Herbert Xu8a870172011-02-12 01:05:42 -080096 bool mglist;
Herbert Xueb1d1642010-02-27 19:41:45 +000097};
98
99struct net_bridge_mdb_htable
100{
101 struct hlist_head *mhash;
102 struct rcu_head rcu;
103 struct net_bridge_mdb_htable *old;
104 u32 size;
105 u32 max;
106 u32 secret;
107 u32 ver;
108};
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110struct net_bridge_port
111{
112 struct net_bridge *br;
113 struct net_device *dev;
114 struct list_head list;
115
116 /* STP */
117 u8 priority;
118 u8 state;
119 u16 port_no;
120 unsigned char topology_change_ack;
121 unsigned char config_pending;
122 port_id port_id;
123 port_id designated_port;
124 bridge_id designated_root;
125 bridge_id designated_bridge;
126 u32 path_cost;
127 u32 designated_cost;
stephen hemminger0c031502011-07-22 07:47:06 +0000128 unsigned long designated_age;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
130 struct timer_list forward_delay_timer;
131 struct timer_list hold_timer;
132 struct timer_list message_age_timer;
133 struct kobject kobj;
134 struct rcu_head rcu;
Fischer, Anna3982d3d2009-08-13 06:55:16 +0000135
136 unsigned long flags;
137#define BR_HAIRPIN_MODE 0x00000001
Herbert Xueb1d1642010-02-27 19:41:45 +0000138
139#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
140 u32 multicast_startup_queries_sent;
141 unsigned char multicast_router;
142 struct timer_list multicast_router_timer;
143 struct timer_list multicast_query_timer;
144 struct hlist_head mglist;
145 struct hlist_node rlist;
146#endif
Simon Arlotte0f43752010-05-10 09:31:11 +0000147
148#ifdef CONFIG_SYSFS
149 char sysfs_name[IFNAMSIZ];
150#endif
Herbert Xu91d2c342010-06-10 16:12:50 +0000151
152#ifdef CONFIG_NET_POLL_CONTROLLER
153 struct netpoll *np;
154#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155};
156
Jiri Pirkof350a0a82010-06-15 06:50:45 +0000157#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
158
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000159static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
160{
161 struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
162 return br_port_exists(dev) ? port : NULL;
163}
164
Eric Dumazetec1e5612010-11-15 06:38:14 +0000165static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000166{
Eric Dumazetec1e5612010-11-15 06:38:14 +0000167 return br_port_exists(dev) ?
168 rtnl_dereference(dev->rx_handler_data) : NULL;
stephen hemmingerb5ed54e2010-11-15 06:38:13 +0000169}
170
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700171struct br_cpu_netstats {
Eric Dumazet406818f2010-06-23 13:00:48 -0700172 u64 rx_packets;
173 u64 rx_bytes;
174 u64 tx_packets;
175 u64 tx_bytes;
176 struct u64_stats_sync syncp;
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700177};
178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179struct net_bridge
180{
181 spinlock_t lock;
182 struct list_head port_list;
183 struct net_device *dev;
stephen hemminger14bb4782010-03-02 13:32:09 +0000184
Eric Dumazet0eae88f2010-04-20 19:06:52 -0700185 struct br_cpu_netstats __percpu *stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 spinlock_t hash_lock;
187 struct hlist_head hash[BR_HASH_SIZE];
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700188#ifdef CONFIG_BRIDGE_NETFILTER
189 struct rtable fake_rtable;
Patrick McHardy4df53d82010-07-02 09:32:57 +0200190 bool nf_call_iptables;
191 bool nf_call_ip6tables;
192 bool nf_call_arptables;
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700193#endif
Stephen Hemminger92c05742008-06-17 16:10:06 -0700194 unsigned long flags;
195#define BR_SET_MAC_ADDR 0x00000001
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
stephen hemminger515853c2011-10-03 18:14:46 +0000197 u16 group_fwd_mask;
198
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 /* STP */
200 bridge_id designated_root;
201 bridge_id bridge_id;
202 u32 root_path_cost;
203 unsigned long max_age;
204 unsigned long hello_time;
205 unsigned long forward_delay;
206 unsigned long bridge_max_age;
207 unsigned long ageing_time;
208 unsigned long bridge_hello_time;
209 unsigned long bridge_forward_delay;
210
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800211 u8 group_addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 u16 root_port;
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700213
214 enum {
215 BR_NO_STP, /* no spanning tree */
216 BR_KERNEL_STP, /* old STP in kernel */
217 BR_USER_STP, /* new RSTP in userspace */
218 } stp_enabled;
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 unsigned char topology_change;
221 unsigned char topology_change_detected;
222
Herbert Xueb1d1642010-02-27 19:41:45 +0000223#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
224 unsigned char multicast_router;
225
226 u8 multicast_disabled:1;
Herbert Xuc5c23262012-04-13 02:37:42 +0000227 u8 multicast_querier:1;
Herbert Xueb1d1642010-02-27 19:41:45 +0000228
229 u32 hash_elasticity;
230 u32 hash_max;
231
232 u32 multicast_last_member_count;
233 u32 multicast_startup_queries_sent;
234 u32 multicast_startup_query_count;
235
236 unsigned long multicast_last_member_interval;
237 unsigned long multicast_membership_interval;
238 unsigned long multicast_querier_interval;
239 unsigned long multicast_query_interval;
240 unsigned long multicast_query_response_interval;
241 unsigned long multicast_startup_query_interval;
242
243 spinlock_t multicast_lock;
Eric Dumazete8051682010-11-15 06:38:10 +0000244 struct net_bridge_mdb_htable __rcu *mdb;
Herbert Xueb1d1642010-02-27 19:41:45 +0000245 struct hlist_head router_list;
Herbert Xueb1d1642010-02-27 19:41:45 +0000246
247 struct timer_list multicast_router_timer;
248 struct timer_list multicast_querier_timer;
249 struct timer_list multicast_query_timer;
250#endif
251
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 struct timer_list hello_timer;
253 struct timer_list tcn_timer;
254 struct timer_list topology_change_timer;
255 struct timer_list gc_timer;
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400256 struct kobject *ifobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257};
258
Herbert Xu68b7c892010-02-27 19:41:40 +0000259struct br_input_skb_cb {
260 struct net_device *brdev;
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000261#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
Herbert Xueb1d1642010-02-27 19:41:45 +0000262 int igmp;
263 int mrouters_only;
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000264#endif
Herbert Xu68b7c892010-02-27 19:41:40 +0000265};
266
267#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
268
YOSHIFUJI Hideaki / 吉藤英明32dec5d2010-03-15 21:51:18 +0000269#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
270# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
271#else
272# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
273#endif
274
stephen hemminger28a16c92010-05-10 09:31:09 +0000275#define br_printk(level, br, format, args...) \
276 printk(level "%s: " format, (br)->dev->name, ##args)
277
278#define br_err(__br, format, args...) \
279 br_printk(KERN_ERR, __br, format, ##args)
280#define br_warn(__br, format, args...) \
281 br_printk(KERN_WARNING, __br, format, ##args)
282#define br_notice(__br, format, args...) \
283 br_printk(KERN_NOTICE, __br, format, ##args)
284#define br_info(__br, format, args...) \
285 br_printk(KERN_INFO, __br, format, ##args)
286
287#define br_debug(br, format, args...) \
288 pr_debug("%s: " format, (br)->dev->name, ##args)
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290extern struct notifier_block br_device_notifier;
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800291extern const u8 br_group_address[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
293/* called under bridge lock */
294static inline int br_is_root_bridge(const struct net_bridge *br)
295{
296 return !memcmp(&br->bridge_id, &br->designated_root, 8);
297}
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299/* br_device.c */
300extern void br_dev_setup(struct net_device *dev);
stephen hemminger1ce5cce2011-10-06 11:19:41 +0000301extern void br_dev_delete(struct net_device *dev, struct list_head *list);
Stephen Hemminger6fef4c02009-08-31 19:50:41 +0000302extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
303 struct net_device *dev);
stephen hemmingercfb478d2010-05-10 09:31:08 +0000304#ifdef CONFIG_NET_POLL_CONTROLLER
Herbert Xu91d2c342010-06-10 16:12:50 +0000305static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
306{
307 return br->dev->npinfo;
308}
stephen hemmingercfb478d2010-05-10 09:31:08 +0000309
Herbert Xu91d2c342010-06-10 16:12:50 +0000310static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
311 struct sk_buff *skb)
312{
313 struct netpoll *np = p->np;
314
315 if (np)
316 netpoll_send_skb(np, skb);
317}
318
Amerigo Wang47be03a22012-08-10 01:24:37 +0000319extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp);
Herbert Xu91d2c342010-06-10 16:12:50 +0000320extern void br_netpoll_disable(struct net_bridge_port *p);
321#else
322static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
323{
324 return NULL;
325}
326
Herbert Xu9f70b0f2010-06-15 21:43:48 -0700327static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
Herbert Xu91d2c342010-06-10 16:12:50 +0000328 struct sk_buff *skb)
329{
330}
331
Amerigo Wang47be03a22012-08-10 01:24:37 +0000332static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp)
Herbert Xu91d2c342010-06-10 16:12:50 +0000333{
334 return 0;
335}
336
337static inline void br_netpoll_disable(struct net_bridge_port *p)
338{
339}
stephen hemmingercfb478d2010-05-10 09:31:08 +0000340#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
342/* br_fdb.c */
Akinobu Mita87a596e2007-04-07 18:57:07 +0900343extern int br_fdb_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344extern void br_fdb_fini(void);
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700345extern void br_fdb_flush(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346extern void br_fdb_changeaddr(struct net_bridge_port *p,
347 const unsigned char *newaddr);
stephen hemminger43598812011-12-08 07:17:49 +0000348extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349extern void br_fdb_cleanup(unsigned long arg);
350extern void br_fdb_delete_by_port(struct net_bridge *br,
Stephen Hemminger1a620692006-10-12 14:45:38 -0700351 const struct net_bridge_port *p, int do_all);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
353 const unsigned char *addr);
Michał Mirosławda678292009-06-05 05:35:28 +0000354extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900355extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 unsigned long count, unsigned long off);
357extern int br_fdb_insert(struct net_bridge *br,
358 struct net_bridge_port *source,
359 const unsigned char *addr);
360extern void br_fdb_update(struct net_bridge *br,
361 struct net_bridge_port *source,
362 const unsigned char *addr);
John Fastabend77162022012-04-15 06:43:56 +0000363
364extern int br_fdb_delete(struct ndmsg *ndm,
365 struct net_device *dev,
stephen hemminger6b6e2722012-09-17 10:03:26 +0000366 const unsigned char *addr);
stephen hemmingeredc7d572012-10-01 12:32:33 +0000367extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[],
John Fastabend77162022012-04-15 06:43:56 +0000368 struct net_device *dev,
stephen hemminger6b6e2722012-09-17 10:03:26 +0000369 const unsigned char *addr,
John Fastabend77162022012-04-15 06:43:56 +0000370 u16 nlh_flags);
371extern int br_fdb_dump(struct sk_buff *skb,
372 struct netlink_callback *cb,
373 struct net_device *dev,
374 int idx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376/* br_forward.c */
377extern void br_deliver(const struct net_bridge_port *to,
378 struct sk_buff *skb);
379extern int br_dev_queue_push_xmit(struct sk_buff *skb);
380extern void br_forward(const struct net_bridge_port *to,
Michael Braun7f7708f2010-03-16 00:26:22 -0700381 struct sk_buff *skb, struct sk_buff *skb0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382extern int br_forward_finish(struct sk_buff *skb);
Herbert Xue081e1e2007-09-16 16:20:48 -0700383extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
Herbert Xub33084b2010-02-27 19:41:41 +0000384extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
385 struct sk_buff *skb2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
387/* br_if.c */
Stephen Hemminger269def72007-02-22 01:10:18 -0800388extern void br_port_carrier_check(struct net_bridge_port *p);
Alexey Dobriyan4aa678b2008-09-08 16:19:58 -0700389extern int br_add_bridge(struct net *net, const char *name);
390extern int br_del_bridge(struct net *net, const char *name);
Alexey Dobriyan712d6952008-09-08 16:20:18 -0700391extern void br_net_exit(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392extern int br_add_if(struct net_bridge *br,
393 struct net_device *dev);
394extern int br_del_if(struct net_bridge *br,
395 struct net_device *dev);
396extern int br_min_mtu(const struct net_bridge *br);
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000397extern netdev_features_t br_features_recompute(struct net_bridge *br,
398 netdev_features_t features);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400/* br_input.c */
401extern int br_handle_frame_finish(struct sk_buff *skb);
Jiri Pirko8a4eb572011-03-12 03:14:39 +0000402extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
404/* br_ioctl.c */
405extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
Eric W. Biederman881d9662007-09-17 11:56:21 -0700406extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407
Herbert Xueb1d1642010-02-27 19:41:45 +0000408/* br_multicast.c */
409#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
410extern int br_multicast_rcv(struct net_bridge *br,
411 struct net_bridge_port *port,
412 struct sk_buff *skb);
413extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
414 struct sk_buff *skb);
415extern void br_multicast_add_port(struct net_bridge_port *port);
416extern void br_multicast_del_port(struct net_bridge_port *port);
417extern void br_multicast_enable_port(struct net_bridge_port *port);
418extern void br_multicast_disable_port(struct net_bridge_port *port);
419extern void br_multicast_init(struct net_bridge *br);
420extern void br_multicast_open(struct net_bridge *br);
421extern void br_multicast_stop(struct net_bridge *br);
Herbert Xu5cb5e942010-02-27 19:41:46 +0000422extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
423 struct sk_buff *skb);
424extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
425 struct sk_buff *skb, struct sk_buff *skb2);
Herbert Xu0909e112010-02-27 19:41:49 +0000426extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
427extern int br_multicast_set_port_router(struct net_bridge_port *p,
428 unsigned long val);
Herbert Xu561f1102010-02-27 19:41:50 +0000429extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
Herbert Xuc5c23262012-04-13 02:37:42 +0000430extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
Herbert Xub1951672010-02-27 19:41:51 +0000431extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000432
433static inline bool br_multicast_is_router(struct net_bridge *br)
434{
435 return br->multicast_router == 2 ||
436 (br->multicast_router == 1 &&
437 timer_pending(&br->multicast_router_timer));
438}
Herbert Xueb1d1642010-02-27 19:41:45 +0000439#else
440static inline int br_multicast_rcv(struct net_bridge *br,
441 struct net_bridge_port *port,
442 struct sk_buff *skb)
443{
444 return 0;
445}
446
447static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
448 struct sk_buff *skb)
449{
450 return NULL;
451}
452
453static inline void br_multicast_add_port(struct net_bridge_port *port)
454{
455}
456
457static inline void br_multicast_del_port(struct net_bridge_port *port)
458{
459}
460
461static inline void br_multicast_enable_port(struct net_bridge_port *port)
462{
463}
464
465static inline void br_multicast_disable_port(struct net_bridge_port *port)
466{
467}
468
469static inline void br_multicast_init(struct net_bridge *br)
470{
471}
472
473static inline void br_multicast_open(struct net_bridge *br)
474{
475}
476
477static inline void br_multicast_stop(struct net_bridge *br)
478{
479}
Herbert Xu5cb5e942010-02-27 19:41:46 +0000480
481static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
482 struct sk_buff *skb)
483{
484}
485
486static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
487 struct sk_buff *skb,
488 struct sk_buff *skb2)
489{
490}
Herbert Xueb1d1642010-02-27 19:41:45 +0000491static inline bool br_multicast_is_router(struct net_bridge *br)
492{
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000493 return 0;
Herbert Xueb1d1642010-02-27 19:41:45 +0000494}
Sridhar Samudrala85b35262010-03-01 09:53:04 +0000495#endif
Herbert Xueb1d1642010-02-27 19:41:45 +0000496
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497/* br_netfilter.c */
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700498#ifdef CONFIG_BRIDGE_NETFILTER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499extern int br_netfilter_init(void);
500extern void br_netfilter_fini(void);
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700501extern void br_netfilter_rtable_init(struct net_bridge *);
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700502#else
503#define br_netfilter_init() (0)
504#define br_netfilter_fini() do { } while(0)
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700505#define br_netfilter_rtable_init(x)
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700506#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
508/* br_stp.c */
509extern void br_log_state(const struct net_bridge_port *p);
510extern struct net_bridge_port *br_get_port(struct net_bridge *br,
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900511 u16 port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512extern void br_init_port(struct net_bridge_port *p);
513extern void br_become_designated_port(struct net_bridge_port *p);
514
stephen hemminger14f98f22011-04-04 14:03:33 +0000515extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
516extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
517extern int br_set_max_age(struct net_bridge *br, unsigned long x);
518
519
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520/* br_stp_if.c */
521extern void br_stp_enable_bridge(struct net_bridge *br);
522extern void br_stp_disable_bridge(struct net_bridge *br);
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700523extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524extern void br_stp_enable_port(struct net_bridge_port *p);
525extern void br_stp_disable_port(struct net_bridge_port *p);
stephen hemmingeredf947f2011-03-24 13:24:01 +0000526extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800527extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528extern void br_stp_set_bridge_priority(struct net_bridge *br,
529 u16 newprio);
stephen hemminger14f98f22011-04-04 14:03:33 +0000530extern int br_stp_set_port_priority(struct net_bridge_port *p,
531 unsigned long newprio);
532extern int br_stp_set_path_cost(struct net_bridge_port *p,
533 unsigned long path_cost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
535
536/* br_stp_bpdu.c */
Patrick McHardy7c85fbf2008-07-05 21:25:56 -0700537struct stp_proto;
538extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
539 struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
541/* br_stp_timer.c */
542extern void br_stp_timer_init(struct net_bridge *br);
543extern void br_stp_port_timer_init(struct net_bridge_port *p);
544extern unsigned long br_timer_value(const struct timer_list *timer);
545
546/* br.c */
Igor Maraviće6373c42011-12-12 02:58:25 +0000547#if IS_ENABLED(CONFIG_ATM_LANE)
Michał Mirosławda678292009-06-05 05:35:28 +0000548extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
549#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700551/* br_netlink.c */
stephen hemminger149ddd82012-06-26 05:48:45 +0000552extern struct rtnl_link_ops br_link_ops;
Thomas Graf32fe21c2007-03-22 11:59:03 -0700553extern int br_netlink_init(void);
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700554extern void br_netlink_fini(void);
555extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
556
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557#ifdef CONFIG_SYSFS
558/* br_sysfs_if.c */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100559extern const struct sysfs_ops brport_sysfs_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560extern int br_sysfs_addif(struct net_bridge_port *p);
Simon Arlotte0f43752010-05-10 09:31:11 +0000561extern int br_sysfs_renameif(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
563/* br_sysfs_br.c */
564extern int br_sysfs_addbr(struct net_device *dev);
565extern void br_sysfs_delbr(struct net_device *dev);
566
567#else
568
569#define br_sysfs_addif(p) (0)
Simon Arlotte0f43752010-05-10 09:31:11 +0000570#define br_sysfs_renameif(p) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571#define br_sysfs_addbr(dev) (0)
572#define br_sysfs_delbr(dev) do { } while(0)
573#endif /* CONFIG_SYSFS */
574
575#endif