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[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / bridge / br_private.h
blob0f4a74bc6a9b58e06b34194117577d7817b8be01
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 <net/route.h>
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
28 #define BR_VERSION "2.3"
29
30 /* Path to usermode spanning tree program */
31 #define BR_STP_PROG "/sbin/bridge-stp"
32
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 br_ip
49 {
50 union {
51 __be32 ip4;
52 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
53 struct in6_addr ip6;
54 #endif
55 } u;
56 __be16 proto;
57 };
58
59 struct net_bridge_fdb_entry
60 {
61 struct hlist_node hlist;
62 struct net_bridge_port *dst;
63
64 struct rcu_head rcu;
65 unsigned long ageing_timer;
66 mac_addr addr;
67 unsigned char is_local;
68 unsigned char is_static;
69 };
70
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;
78 struct br_ip addr;
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;
91 struct br_ip addr;
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
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;
130
131 unsigned long flags;
132 #define BR_HAIRPIN_MODE 0x00000001
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
142
143 #ifdef CONFIG_SYSFS
144 char sysfs_name[IFNAMSIZ];
145 #endif
146 };
147
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
155 struct net_bridge
156 {
157 spinlock_t lock;
158 struct list_head port_list;
159 struct net_device *dev;
160
161 struct br_cpu_netstats __percpu *stats;
162 spinlock_t hash_lock;
163 struct hlist_head hash[BR_HASH_SIZE];
164 unsigned long feature_mask;
165 #ifdef CONFIG_BRIDGE_NETFILTER
166 struct rtable fake_rtable;
167 #endif
168 unsigned long flags;
169 #define BR_SET_MAC_ADDR 0x00000001
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
183 u8 group_addr[ETH_ALEN];
184 u16 root_port;
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
192 unsigned char topology_change;
193 unsigned char topology_change_detected;
194
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
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;
228 struct kobject *ifobj;
229 };
230
231 struct br_input_skb_cb {
232 struct net_device *brdev;
233 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
234 int igmp;
235 int mrouters_only;
236 #endif
237 };
238
239 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
240
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
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
262 extern struct notifier_block br_device_notifier;
263 extern const u8 br_group_address[ETH_ALEN];
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
271 /* br_device.c */
272 extern void br_dev_setup(struct net_device *dev);
273 extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
274 struct net_device *dev);
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
287
288 /* br_fdb.c */
289 extern int br_fdb_init(void);
290 extern void br_fdb_fini(void);
291 extern void br_fdb_flush(struct net_bridge *br);
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,
296 const struct net_bridge_port *p, int do_all);
297 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
298 const unsigned char *addr);
299 extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
300 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
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,
314 struct sk_buff *skb, struct sk_buff *skb0);
315 extern int br_forward_finish(struct sk_buff *skb);
316 extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
317 extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
318 struct sk_buff *skb2);
319
320 /* br_if.c */
321 extern void br_port_carrier_check(struct net_bridge_port *p);
322 extern int br_add_bridge(struct net *net, const char *name);
323 extern int br_del_bridge(struct net *net, const char *name);
324 extern void br_net_exit(struct net *net);
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);
330 extern void br_features_recompute(struct net_bridge *br);
331
332 /* br_input.c */
333 extern int br_handle_frame_finish(struct sk_buff *skb);
334 extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
335 struct sk_buff *skb);
336
337 /* br_ioctl.c */
338 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
339 extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
340
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);
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);
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);
362 extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
363 extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
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 }
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 }
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 }
423 static inline bool br_multicast_is_router(struct net_bridge *br)
424 {
425 return 0;
426 }
427 #endif
428
429 /* br_netfilter.c */
430 #ifdef CONFIG_BRIDGE_NETFILTER
431 extern int br_netfilter_init(void);
432 extern void br_netfilter_fini(void);
433 extern void br_netfilter_rtable_init(struct net_bridge *);
434 #else
435 #define br_netfilter_init() (0)
436 #define br_netfilter_fini() do { } while(0)
437 #define br_netfilter_rtable_init(x)
438 #endif
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,
443 u16 port_no);
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);
450 extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
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);
454 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
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 */
464 struct stp_proto;
465 extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
466 struct net_device *dev);
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 */
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
477
478 /* br_netlink.c */
479 extern int br_netlink_init(void);
480 extern void br_netlink_fini(void);
481 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
482
483 #ifdef CONFIG_SYSFS
484 /* br_sysfs_if.c */
485 extern const struct sysfs_ops brport_sysfs_ops;
486 extern int br_sysfs_addif(struct net_bridge_port *p);
487 extern int br_sysfs_renameif(struct net_bridge_port *p);
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)
496 #define br_sysfs_renameif(p) (0)
497 #define br_sysfs_addbr(dev) (0)
498 #define br_sysfs_delbr(dev) do { } while(0)
499 #endif /* CONFIG_SYSFS */
500
501 #endif
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