Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
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> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
4adf0af6 | 18 | #include <net/route.h> |
1da177e4 LT |
19 | |
20 | #define BR_HASH_BITS 8 | |
21 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
22 | ||
23 | #define BR_HOLD_TIME (1*HZ) | |
24 | ||
25 | #define BR_PORT_BITS 10 | |
26 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
27 | ||
9cde0708 SH |
28 | #define BR_VERSION "2.3" |
29 | ||
30 | /* Path to usermode spanning tree program */ | |
31 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 32 | |
1da177e4 LT |
33 | typedef struct bridge_id bridge_id; |
34 | typedef struct mac_addr mac_addr; | |
35 | typedef __u16 port_id; | |
36 | ||
37 | struct bridge_id | |
38 | { | |
39 | unsigned char prio[2]; | |
40 | unsigned char addr[6]; | |
41 | }; | |
42 | ||
43 | struct mac_addr | |
44 | { | |
45 | unsigned char addr[6]; | |
46 | }; | |
47 | ||
8ef2a9a5 YH |
48 | struct br_ip |
49 | { | |
50 | union { | |
51 | __be32 ip4; | |
08b202b6 YH |
52 | #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
53 | struct in6_addr ip6; | |
54 | #endif | |
8ef2a9a5 YH |
55 | } u; |
56 | __be16 proto; | |
57 | }; | |
58 | ||
1da177e4 LT |
59 | struct net_bridge_fdb_entry |
60 | { | |
61 | struct hlist_node hlist; | |
62 | struct net_bridge_port *dst; | |
63 | ||
64 | struct rcu_head rcu; | |
1da177e4 LT |
65 | unsigned long ageing_timer; |
66 | mac_addr addr; | |
67 | unsigned char is_local; | |
68 | unsigned char is_static; | |
69 | }; | |
70 | ||
eb1d1641 HX |
71 | struct net_bridge_port_group { |
72 | struct net_bridge_port *port; | |
73 | struct net_bridge_port_group *next; | |
74 | struct hlist_node mglist; | |
75 | struct rcu_head rcu; | |
76 | struct timer_list timer; | |
77 | struct timer_list query_timer; | |
8ef2a9a5 | 78 | struct br_ip addr; |
eb1d1641 HX |
79 | u32 queries_sent; |
80 | }; | |
81 | ||
82 | struct net_bridge_mdb_entry | |
83 | { | |
84 | struct hlist_node hlist[2]; | |
85 | struct hlist_node mglist; | |
86 | struct net_bridge *br; | |
87 | struct net_bridge_port_group *ports; | |
88 | struct rcu_head rcu; | |
89 | struct timer_list timer; | |
90 | struct timer_list query_timer; | |
8ef2a9a5 | 91 | struct br_ip addr; |
eb1d1641 HX |
92 | u32 queries_sent; |
93 | }; | |
94 | ||
95 | struct net_bridge_mdb_htable | |
96 | { | |
97 | struct hlist_head *mhash; | |
98 | struct rcu_head rcu; | |
99 | struct net_bridge_mdb_htable *old; | |
100 | u32 size; | |
101 | u32 max; | |
102 | u32 secret; | |
103 | u32 ver; | |
104 | }; | |
105 | ||
1da177e4 LT |
106 | struct net_bridge_port |
107 | { | |
108 | struct net_bridge *br; | |
109 | struct net_device *dev; | |
110 | struct list_head list; | |
111 | ||
112 | /* STP */ | |
113 | u8 priority; | |
114 | u8 state; | |
115 | u16 port_no; | |
116 | unsigned char topology_change_ack; | |
117 | unsigned char config_pending; | |
118 | port_id port_id; | |
119 | port_id designated_port; | |
120 | bridge_id designated_root; | |
121 | bridge_id designated_bridge; | |
122 | u32 path_cost; | |
123 | u32 designated_cost; | |
124 | ||
125 | struct timer_list forward_delay_timer; | |
126 | struct timer_list hold_timer; | |
127 | struct timer_list message_age_timer; | |
128 | struct kobject kobj; | |
129 | struct rcu_head rcu; | |
3982d3d2 FA |
130 | |
131 | unsigned long flags; | |
132 | #define BR_HAIRPIN_MODE 0x00000001 | |
eb1d1641 HX |
133 | |
134 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
135 | u32 multicast_startup_queries_sent; | |
136 | unsigned char multicast_router; | |
137 | struct timer_list multicast_router_timer; | |
138 | struct timer_list multicast_query_timer; | |
139 | struct hlist_head mglist; | |
140 | struct hlist_node rlist; | |
141 | #endif | |
e0f43752 SA |
142 | |
143 | #ifdef CONFIG_SYSFS | |
144 | char sysfs_name[IFNAMSIZ]; | |
145 | #endif | |
1da177e4 LT |
146 | }; |
147 | ||
0eae88f3 ED |
148 | struct br_cpu_netstats { |
149 | unsigned long rx_packets; | |
150 | unsigned long rx_bytes; | |
151 | unsigned long tx_packets; | |
152 | unsigned long tx_bytes; | |
153 | }; | |
154 | ||
1da177e4 LT |
155 | struct net_bridge |
156 | { | |
157 | spinlock_t lock; | |
158 | struct list_head port_list; | |
159 | struct net_device *dev; | |
14bb4789 | 160 | |
0eae88f3 | 161 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
162 | spinlock_t hash_lock; |
163 | struct hlist_head hash[BR_HASH_SIZE]; | |
edb5e46f | 164 | unsigned long feature_mask; |
4adf0af6 SW |
165 | #ifdef CONFIG_BRIDGE_NETFILTER |
166 | struct rtable fake_rtable; | |
167 | #endif | |
92c0574f SH |
168 | unsigned long flags; |
169 | #define BR_SET_MAC_ADDR 0x00000001 | |
1da177e4 LT |
170 | |
171 | /* STP */ | |
172 | bridge_id designated_root; | |
173 | bridge_id bridge_id; | |
174 | u32 root_path_cost; | |
175 | unsigned long max_age; | |
176 | unsigned long hello_time; | |
177 | unsigned long forward_delay; | |
178 | unsigned long bridge_max_age; | |
179 | unsigned long ageing_time; | |
180 | unsigned long bridge_hello_time; | |
181 | unsigned long bridge_forward_delay; | |
182 | ||
fda93d92 | 183 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 184 | u16 root_port; |
9cde0708 SH |
185 | |
186 | enum { | |
187 | BR_NO_STP, /* no spanning tree */ | |
188 | BR_KERNEL_STP, /* old STP in kernel */ | |
189 | BR_USER_STP, /* new RSTP in userspace */ | |
190 | } stp_enabled; | |
191 | ||
1da177e4 LT |
192 | unsigned char topology_change; |
193 | unsigned char topology_change_detected; | |
194 | ||
eb1d1641 HX |
195 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
196 | unsigned char multicast_router; | |
197 | ||
198 | u8 multicast_disabled:1; | |
199 | ||
200 | u32 hash_elasticity; | |
201 | u32 hash_max; | |
202 | ||
203 | u32 multicast_last_member_count; | |
204 | u32 multicast_startup_queries_sent; | |
205 | u32 multicast_startup_query_count; | |
206 | ||
207 | unsigned long multicast_last_member_interval; | |
208 | unsigned long multicast_membership_interval; | |
209 | unsigned long multicast_querier_interval; | |
210 | unsigned long multicast_query_interval; | |
211 | unsigned long multicast_query_response_interval; | |
212 | unsigned long multicast_startup_query_interval; | |
213 | ||
214 | spinlock_t multicast_lock; | |
215 | struct net_bridge_mdb_htable *mdb; | |
216 | struct hlist_head router_list; | |
217 | struct hlist_head mglist; | |
218 | ||
219 | struct timer_list multicast_router_timer; | |
220 | struct timer_list multicast_querier_timer; | |
221 | struct timer_list multicast_query_timer; | |
222 | #endif | |
223 | ||
1da177e4 LT |
224 | struct timer_list hello_timer; |
225 | struct timer_list tcn_timer; | |
226 | struct timer_list topology_change_timer; | |
227 | struct timer_list gc_timer; | |
43b98c4a | 228 | struct kobject *ifobj; |
1da177e4 LT |
229 | }; |
230 | ||
68b7c895 HX |
231 | struct br_input_skb_cb { |
232 | struct net_device *brdev; | |
32dec5dd | 233 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
234 | int igmp; |
235 | int mrouters_only; | |
32dec5dd | 236 | #endif |
68b7c895 HX |
237 | }; |
238 | ||
239 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
240 | ||
32dec5dd YH |
241 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
242 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
243 | #else | |
244 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
245 | #endif | |
246 | ||
28a16c97 | 247 | #define br_printk(level, br, format, args...) \ |
248 | printk(level "%s: " format, (br)->dev->name, ##args) | |
249 | ||
250 | #define br_err(__br, format, args...) \ | |
251 | br_printk(KERN_ERR, __br, format, ##args) | |
252 | #define br_warn(__br, format, args...) \ | |
253 | br_printk(KERN_WARNING, __br, format, ##args) | |
254 | #define br_notice(__br, format, args...) \ | |
255 | br_printk(KERN_NOTICE, __br, format, ##args) | |
256 | #define br_info(__br, format, args...) \ | |
257 | br_printk(KERN_INFO, __br, format, ##args) | |
258 | ||
259 | #define br_debug(br, format, args...) \ | |
260 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
261 | ||
1da177e4 | 262 | extern struct notifier_block br_device_notifier; |
fda93d92 | 263 | extern const u8 br_group_address[ETH_ALEN]; |
1da177e4 LT |
264 | |
265 | /* called under bridge lock */ | |
266 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
267 | { | |
268 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
269 | } | |
270 | ||
1da177e4 LT |
271 | /* br_device.c */ |
272 | extern void br_dev_setup(struct net_device *dev); | |
6fef4c0c SH |
273 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
274 | struct net_device *dev); | |
cfb478da | 275 | #ifdef CONFIG_NET_POLL_CONTROLLER |
276 | extern void br_netpoll_cleanup(struct net_device *dev); | |
277 | extern void br_netpoll_enable(struct net_bridge *br, | |
278 | struct net_device *dev); | |
279 | extern void br_netpoll_disable(struct net_bridge *br, | |
280 | struct net_device *dev); | |
281 | #else | |
282 | #define br_netpoll_cleanup(br) | |
283 | #define br_netpoll_enable(br, dev) | |
284 | #define br_netpoll_disable(br, dev) | |
285 | ||
286 | #endif | |
1da177e4 LT |
287 | |
288 | /* br_fdb.c */ | |
87a596e0 | 289 | extern int br_fdb_init(void); |
1da177e4 | 290 | extern void br_fdb_fini(void); |
9cf63747 | 291 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
292 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
293 | const unsigned char *newaddr); | |
294 | extern void br_fdb_cleanup(unsigned long arg); | |
295 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 296 | const struct net_bridge_port *p, int do_all); |
1da177e4 LT |
297 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
298 | const unsigned char *addr); | |
da678292 | 299 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 300 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
301 | unsigned long count, unsigned long off); |
302 | extern int br_fdb_insert(struct net_bridge *br, | |
303 | struct net_bridge_port *source, | |
304 | const unsigned char *addr); | |
305 | extern void br_fdb_update(struct net_bridge *br, | |
306 | struct net_bridge_port *source, | |
307 | const unsigned char *addr); | |
308 | ||
309 | /* br_forward.c */ | |
310 | extern void br_deliver(const struct net_bridge_port *to, | |
311 | struct sk_buff *skb); | |
312 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
313 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 314 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 315 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 316 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
317 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
318 | struct sk_buff *skb2); | |
1da177e4 LT |
319 | |
320 | /* br_if.c */ | |
269def7c | 321 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
322 | extern int br_add_bridge(struct net *net, const char *name); |
323 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 324 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
325 | extern int br_add_if(struct net_bridge *br, |
326 | struct net_device *dev); | |
327 | extern int br_del_if(struct net_bridge *br, | |
328 | struct net_device *dev); | |
329 | extern int br_min_mtu(const struct net_bridge *br); | |
81d35307 | 330 | extern void br_features_recompute(struct net_bridge *br); |
1da177e4 LT |
331 | |
332 | /* br_input.c */ | |
333 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
6229e362 SH |
334 | extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, |
335 | struct sk_buff *skb); | |
1da177e4 LT |
336 | |
337 | /* br_ioctl.c */ | |
338 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 339 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 340 | |
eb1d1641 HX |
341 | /* br_multicast.c */ |
342 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
343 | extern int br_multicast_rcv(struct net_bridge *br, | |
344 | struct net_bridge_port *port, | |
345 | struct sk_buff *skb); | |
346 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
347 | struct sk_buff *skb); | |
348 | extern void br_multicast_add_port(struct net_bridge_port *port); | |
349 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
350 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
351 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
352 | extern void br_multicast_init(struct net_bridge *br); | |
353 | extern void br_multicast_open(struct net_bridge *br); | |
354 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
355 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
356 | struct sk_buff *skb); | |
357 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
358 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
359 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
360 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
361 | unsigned long val); | |
561f1103 | 362 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
b195167f | 363 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
85b35269 SS |
364 | |
365 | static inline bool br_multicast_is_router(struct net_bridge *br) | |
366 | { | |
367 | return br->multicast_router == 2 || | |
368 | (br->multicast_router == 1 && | |
369 | timer_pending(&br->multicast_router_timer)); | |
370 | } | |
eb1d1641 HX |
371 | #else |
372 | static inline int br_multicast_rcv(struct net_bridge *br, | |
373 | struct net_bridge_port *port, | |
374 | struct sk_buff *skb) | |
375 | { | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
380 | struct sk_buff *skb) | |
381 | { | |
382 | return NULL; | |
383 | } | |
384 | ||
385 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
386 | { | |
387 | } | |
388 | ||
389 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
390 | { | |
391 | } | |
392 | ||
393 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
394 | { | |
395 | } | |
396 | ||
397 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
398 | { | |
399 | } | |
400 | ||
401 | static inline void br_multicast_init(struct net_bridge *br) | |
402 | { | |
403 | } | |
404 | ||
405 | static inline void br_multicast_open(struct net_bridge *br) | |
406 | { | |
407 | } | |
408 | ||
409 | static inline void br_multicast_stop(struct net_bridge *br) | |
410 | { | |
411 | } | |
5cb5e947 HX |
412 | |
413 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
414 | struct sk_buff *skb) | |
415 | { | |
416 | } | |
417 | ||
418 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
419 | struct sk_buff *skb, | |
420 | struct sk_buff *skb2) | |
421 | { | |
422 | } | |
eb1d1641 HX |
423 | static inline bool br_multicast_is_router(struct net_bridge *br) |
424 | { | |
85b35269 | 425 | return 0; |
eb1d1641 | 426 | } |
85b35269 | 427 | #endif |
eb1d1641 | 428 | |
1da177e4 | 429 | /* br_netfilter.c */ |
c0909713 | 430 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
431 | extern int br_netfilter_init(void); |
432 | extern void br_netfilter_fini(void); | |
4adf0af6 | 433 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
434 | #else |
435 | #define br_netfilter_init() (0) | |
436 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 437 | #define br_netfilter_rtable_init(x) |
c0909713 | 438 | #endif |
1da177e4 LT |
439 | |
440 | /* br_stp.c */ | |
441 | extern void br_log_state(const struct net_bridge_port *p); | |
442 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 443 | u16 port_no); |
1da177e4 LT |
444 | extern void br_init_port(struct net_bridge_port *p); |
445 | extern void br_become_designated_port(struct net_bridge_port *p); | |
446 | ||
447 | /* br_stp_if.c */ | |
448 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
449 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 450 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
451 | extern void br_stp_enable_port(struct net_bridge_port *p); |
452 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
453 | extern void br_stp_recalculate_bridge_id(struct net_bridge *br); | |
4505a3ef | 454 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
455 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
456 | u16 newprio); | |
457 | extern void br_stp_set_port_priority(struct net_bridge_port *p, | |
458 | u8 newprio); | |
459 | extern void br_stp_set_path_cost(struct net_bridge_port *p, | |
460 | u32 path_cost); | |
461 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
462 | ||
463 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
464 | struct stp_proto; |
465 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
466 | struct net_device *dev); | |
1da177e4 LT |
467 | |
468 | /* br_stp_timer.c */ | |
469 | extern void br_stp_timer_init(struct net_bridge *br); | |
470 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
471 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
472 | ||
473 | /* br.c */ | |
da678292 MM |
474 | #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) |
475 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); | |
476 | #endif | |
1da177e4 | 477 | |
11dc1f36 | 478 | /* br_netlink.c */ |
32fe21c0 | 479 | extern int br_netlink_init(void); |
11dc1f36 SH |
480 | extern void br_netlink_fini(void); |
481 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
482 | ||
1da177e4 LT |
483 | #ifdef CONFIG_SYSFS |
484 | /* br_sysfs_if.c */ | |
52cf25d0 | 485 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 486 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 487 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
488 | |
489 | /* br_sysfs_br.c */ | |
490 | extern int br_sysfs_addbr(struct net_device *dev); | |
491 | extern void br_sysfs_delbr(struct net_device *dev); | |
492 | ||
493 | #else | |
494 | ||
495 | #define br_sysfs_addif(p) (0) | |
e0f43752 | 496 | #define br_sysfs_renameif(p) (0) |
1da177e4 LT |
497 | #define br_sysfs_addbr(dev) (0) |
498 | #define br_sysfs_delbr(dev) do { } while(0) | |
499 | #endif /* CONFIG_SYSFS */ | |
500 | ||
501 | #endif |