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