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> |
91d2c34a | 18 | #include <linux/netpoll.h> |
406818ff | 19 | #include <linux/u64_stats_sync.h> |
4adf0af6 | 20 | #include <net/route.h> |
243a2e63 | 21 | #include <linux/if_vlan.h> |
1da177e4 LT |
22 | |
23 | #define BR_HASH_BITS 8 | |
24 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
25 | ||
26 | #define BR_HOLD_TIME (1*HZ) | |
27 | ||
28 | #define BR_PORT_BITS 10 | |
29 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
243a2e63 | 30 | #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) |
1da177e4 | 31 | |
9cde0708 SH |
32 | #define BR_VERSION "2.3" |
33 | ||
515853cc | 34 | /* Control of forwarding link local multicast */ |
35 | #define BR_GROUPFWD_DEFAULT 0 | |
36 | /* Don't allow forwarding control protocols like STP and LLDP */ | |
37 | #define BR_GROUPFWD_RESTRICTED 0x4007u | |
38 | ||
9cde0708 SH |
39 | /* Path to usermode spanning tree program */ |
40 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 41 | |
1da177e4 LT |
42 | typedef struct bridge_id bridge_id; |
43 | typedef struct mac_addr mac_addr; | |
44 | typedef __u16 port_id; | |
45 | ||
46 | struct bridge_id | |
47 | { | |
48 | unsigned char prio[2]; | |
49 | unsigned char addr[6]; | |
50 | }; | |
51 | ||
52 | struct mac_addr | |
53 | { | |
54 | unsigned char addr[6]; | |
55 | }; | |
56 | ||
8ef2a9a5 YH |
57 | struct br_ip |
58 | { | |
59 | union { | |
60 | __be32 ip4; | |
dfd56b8b | 61 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
62 | struct in6_addr ip6; |
63 | #endif | |
8ef2a9a5 YH |
64 | } u; |
65 | __be16 proto; | |
66 | }; | |
67 | ||
243a2e63 VY |
68 | struct net_port_vlans { |
69 | u16 port_idx; | |
70 | union { | |
71 | struct net_bridge_port *port; | |
72 | struct net_bridge *br; | |
73 | } parent; | |
74 | struct rcu_head rcu; | |
75 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
6cbdceeb | 76 | u16 num_vlans; |
243a2e63 VY |
77 | }; |
78 | ||
1da177e4 LT |
79 | struct net_bridge_fdb_entry |
80 | { | |
81 | struct hlist_node hlist; | |
82 | struct net_bridge_port *dst; | |
83 | ||
84 | struct rcu_head rcu; | |
7cd8861a | 85 | unsigned long updated; |
86 | unsigned long used; | |
1da177e4 LT |
87 | mac_addr addr; |
88 | unsigned char is_local; | |
89 | unsigned char is_static; | |
90 | }; | |
91 | ||
eb1d1641 HX |
92 | struct net_bridge_port_group { |
93 | struct net_bridge_port *port; | |
e8051688 | 94 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
95 | struct hlist_node mglist; |
96 | struct rcu_head rcu; | |
97 | struct timer_list timer; | |
8ef2a9a5 | 98 | struct br_ip addr; |
ccb1c31a | 99 | unsigned char state; |
eb1d1641 HX |
100 | }; |
101 | ||
102 | struct net_bridge_mdb_entry | |
103 | { | |
104 | struct hlist_node hlist[2]; | |
eb1d1641 | 105 | struct net_bridge *br; |
e8051688 | 106 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
107 | struct rcu_head rcu; |
108 | struct timer_list timer; | |
8ef2a9a5 | 109 | struct br_ip addr; |
8a870178 | 110 | bool mglist; |
eb1d1641 HX |
111 | }; |
112 | ||
113 | struct net_bridge_mdb_htable | |
114 | { | |
115 | struct hlist_head *mhash; | |
116 | struct rcu_head rcu; | |
117 | struct net_bridge_mdb_htable *old; | |
118 | u32 size; | |
119 | u32 max; | |
120 | u32 secret; | |
121 | u32 ver; | |
122 | }; | |
123 | ||
1da177e4 LT |
124 | struct net_bridge_port |
125 | { | |
126 | struct net_bridge *br; | |
127 | struct net_device *dev; | |
128 | struct list_head list; | |
129 | ||
130 | /* STP */ | |
131 | u8 priority; | |
132 | u8 state; | |
133 | u16 port_no; | |
134 | unsigned char topology_change_ack; | |
135 | unsigned char config_pending; | |
136 | port_id port_id; | |
137 | port_id designated_port; | |
138 | bridge_id designated_root; | |
139 | bridge_id designated_bridge; | |
140 | u32 path_cost; | |
141 | u32 designated_cost; | |
0c03150e | 142 | unsigned long designated_age; |
1da177e4 LT |
143 | |
144 | struct timer_list forward_delay_timer; | |
145 | struct timer_list hold_timer; | |
146 | struct timer_list message_age_timer; | |
147 | struct kobject kobj; | |
148 | struct rcu_head rcu; | |
3982d3d2 FA |
149 | |
150 | unsigned long flags; | |
151 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 152 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 153 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 154 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
eb1d1641 HX |
155 | |
156 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
157 | u32 multicast_startup_queries_sent; | |
158 | unsigned char multicast_router; | |
159 | struct timer_list multicast_router_timer; | |
160 | struct timer_list multicast_query_timer; | |
161 | struct hlist_head mglist; | |
162 | struct hlist_node rlist; | |
163 | #endif | |
e0f43752 SA |
164 | |
165 | #ifdef CONFIG_SYSFS | |
166 | char sysfs_name[IFNAMSIZ]; | |
167 | #endif | |
91d2c34a HX |
168 | |
169 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
170 | struct netpoll *np; | |
171 | #endif | |
243a2e63 VY |
172 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
173 | struct net_port_vlans __rcu *vlan_info; | |
174 | #endif | |
1da177e4 LT |
175 | }; |
176 | ||
f350a0a8 JP |
177 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
178 | ||
b5ed54e9 | 179 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
180 | { | |
2469ffd7 JF |
181 | struct net_bridge_port *port = |
182 | rcu_dereference_rtnl(dev->rx_handler_data); | |
183 | ||
b5ed54e9 | 184 | return br_port_exists(dev) ? port : NULL; |
185 | } | |
186 | ||
ec1e5610 | 187 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 188 | { |
ec1e5610 ED |
189 | return br_port_exists(dev) ? |
190 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 191 | } |
192 | ||
0eae88f3 | 193 | struct br_cpu_netstats { |
406818ff ED |
194 | u64 rx_packets; |
195 | u64 rx_bytes; | |
196 | u64 tx_packets; | |
197 | u64 tx_bytes; | |
198 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
199 | }; |
200 | ||
1da177e4 LT |
201 | struct net_bridge |
202 | { | |
203 | spinlock_t lock; | |
204 | struct list_head port_list; | |
205 | struct net_device *dev; | |
14bb4789 | 206 | |
0eae88f3 | 207 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
208 | spinlock_t hash_lock; |
209 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
210 | #ifdef CONFIG_BRIDGE_NETFILTER |
211 | struct rtable fake_rtable; | |
4df53d8b PM |
212 | bool nf_call_iptables; |
213 | bool nf_call_ip6tables; | |
214 | bool nf_call_arptables; | |
4adf0af6 | 215 | #endif |
515853cc | 216 | u16 group_fwd_mask; |
217 | ||
1da177e4 LT |
218 | /* STP */ |
219 | bridge_id designated_root; | |
220 | bridge_id bridge_id; | |
221 | u32 root_path_cost; | |
222 | unsigned long max_age; | |
223 | unsigned long hello_time; | |
224 | unsigned long forward_delay; | |
225 | unsigned long bridge_max_age; | |
226 | unsigned long ageing_time; | |
227 | unsigned long bridge_hello_time; | |
228 | unsigned long bridge_forward_delay; | |
229 | ||
fda93d92 | 230 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 231 | u16 root_port; |
9cde0708 SH |
232 | |
233 | enum { | |
234 | BR_NO_STP, /* no spanning tree */ | |
235 | BR_KERNEL_STP, /* old STP in kernel */ | |
236 | BR_USER_STP, /* new RSTP in userspace */ | |
237 | } stp_enabled; | |
238 | ||
1da177e4 LT |
239 | unsigned char topology_change; |
240 | unsigned char topology_change_detected; | |
241 | ||
eb1d1641 HX |
242 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
243 | unsigned char multicast_router; | |
244 | ||
245 | u8 multicast_disabled:1; | |
c5c23260 | 246 | u8 multicast_querier:1; |
eb1d1641 HX |
247 | |
248 | u32 hash_elasticity; | |
249 | u32 hash_max; | |
250 | ||
251 | u32 multicast_last_member_count; | |
252 | u32 multicast_startup_queries_sent; | |
253 | u32 multicast_startup_query_count; | |
254 | ||
255 | unsigned long multicast_last_member_interval; | |
256 | unsigned long multicast_membership_interval; | |
257 | unsigned long multicast_querier_interval; | |
258 | unsigned long multicast_query_interval; | |
259 | unsigned long multicast_query_response_interval; | |
260 | unsigned long multicast_startup_query_interval; | |
261 | ||
262 | spinlock_t multicast_lock; | |
e8051688 | 263 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 264 | struct hlist_head router_list; |
eb1d1641 HX |
265 | |
266 | struct timer_list multicast_router_timer; | |
267 | struct timer_list multicast_querier_timer; | |
268 | struct timer_list multicast_query_timer; | |
269 | #endif | |
270 | ||
1da177e4 LT |
271 | struct timer_list hello_timer; |
272 | struct timer_list tcn_timer; | |
273 | struct timer_list topology_change_timer; | |
274 | struct timer_list gc_timer; | |
43b98c4a | 275 | struct kobject *ifobj; |
243a2e63 VY |
276 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
277 | u8 vlan_enabled; | |
278 | struct net_port_vlans __rcu *vlan_info; | |
279 | #endif | |
1da177e4 LT |
280 | }; |
281 | ||
68b7c895 HX |
282 | struct br_input_skb_cb { |
283 | struct net_device *brdev; | |
32dec5dd | 284 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
285 | int igmp; |
286 | int mrouters_only; | |
32dec5dd | 287 | #endif |
68b7c895 HX |
288 | }; |
289 | ||
290 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
291 | ||
32dec5dd YH |
292 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
293 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
294 | #else | |
295 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
296 | #endif | |
297 | ||
28a16c97 | 298 | #define br_printk(level, br, format, args...) \ |
299 | printk(level "%s: " format, (br)->dev->name, ##args) | |
300 | ||
301 | #define br_err(__br, format, args...) \ | |
302 | br_printk(KERN_ERR, __br, format, ##args) | |
303 | #define br_warn(__br, format, args...) \ | |
304 | br_printk(KERN_WARNING, __br, format, ##args) | |
305 | #define br_notice(__br, format, args...) \ | |
306 | br_printk(KERN_NOTICE, __br, format, ##args) | |
307 | #define br_info(__br, format, args...) \ | |
308 | br_printk(KERN_INFO, __br, format, ##args) | |
309 | ||
310 | #define br_debug(br, format, args...) \ | |
311 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
312 | ||
1da177e4 | 313 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
314 | |
315 | /* called under bridge lock */ | |
316 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
317 | { | |
318 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
319 | } | |
320 | ||
1da177e4 LT |
321 | /* br_device.c */ |
322 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 323 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
324 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
325 | struct net_device *dev); | |
cfb478da | 326 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
327 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
328 | { | |
329 | return br->dev->npinfo; | |
330 | } | |
331 | ||
332 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
333 | struct sk_buff *skb) | |
334 | { | |
335 | struct netpoll *np = p->np; | |
336 | ||
337 | if (np) | |
338 | netpoll_send_skb(np, skb); | |
339 | } | |
340 | ||
47be03a2 | 341 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 342 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 343 | #else |
91d2c34a HX |
344 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
345 | { | |
346 | return NULL; | |
347 | } | |
348 | ||
9f70b0fc | 349 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
350 | struct sk_buff *skb) |
351 | { | |
352 | } | |
cfb478da | 353 | |
47be03a2 | 354 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
355 | { |
356 | return 0; | |
357 | } | |
358 | ||
359 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
360 | { | |
361 | } | |
cfb478da | 362 | #endif |
1da177e4 LT |
363 | |
364 | /* br_fdb.c */ | |
87a596e0 | 365 | extern int br_fdb_init(void); |
1da177e4 | 366 | extern void br_fdb_fini(void); |
9cf63747 | 367 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
368 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
369 | const unsigned char *newaddr); | |
43598813 | 370 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
371 | extern void br_fdb_cleanup(unsigned long arg); |
372 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 373 | const struct net_bridge_port *p, int do_all); |
1da177e4 LT |
374 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
375 | const unsigned char *addr); | |
da678292 | 376 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 377 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
378 | unsigned long count, unsigned long off); |
379 | extern int br_fdb_insert(struct net_bridge *br, | |
380 | struct net_bridge_port *source, | |
381 | const unsigned char *addr); | |
382 | extern void br_fdb_update(struct net_bridge *br, | |
383 | struct net_bridge_port *source, | |
384 | const unsigned char *addr); | |
77162022 JF |
385 | |
386 | extern int br_fdb_delete(struct ndmsg *ndm, | |
387 | struct net_device *dev, | |
6b6e2725 | 388 | const unsigned char *addr); |
edc7d573 | 389 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 390 | struct net_device *dev, |
6b6e2725 | 391 | const unsigned char *addr, |
77162022 JF |
392 | u16 nlh_flags); |
393 | extern int br_fdb_dump(struct sk_buff *skb, | |
394 | struct netlink_callback *cb, | |
395 | struct net_device *dev, | |
396 | int idx); | |
1da177e4 LT |
397 | |
398 | /* br_forward.c */ | |
399 | extern void br_deliver(const struct net_bridge_port *to, | |
400 | struct sk_buff *skb); | |
401 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
402 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 403 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 404 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 405 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
406 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
407 | struct sk_buff *skb2); | |
1da177e4 LT |
408 | |
409 | /* br_if.c */ | |
269def7c | 410 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
411 | extern int br_add_bridge(struct net *net, const char *name); |
412 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 413 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
414 | extern int br_add_if(struct net_bridge *br, |
415 | struct net_device *dev); | |
416 | extern int br_del_if(struct net_bridge *br, | |
417 | struct net_device *dev); | |
418 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
419 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
420 | netdev_features_t features); | |
1da177e4 LT |
421 | |
422 | /* br_input.c */ | |
423 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 424 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
425 | |
426 | /* br_ioctl.c */ | |
427 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 428 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 429 | |
eb1d1641 HX |
430 | /* br_multicast.c */ |
431 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 432 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
433 | extern int br_multicast_rcv(struct net_bridge *br, |
434 | struct net_bridge_port *port, | |
435 | struct sk_buff *skb); | |
436 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
437 | struct sk_buff *skb); | |
438 | extern void br_multicast_add_port(struct net_bridge_port *port); | |
439 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
440 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
441 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
442 | extern void br_multicast_init(struct net_bridge *br); | |
443 | extern void br_multicast_open(struct net_bridge *br); | |
444 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
445 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
446 | struct sk_buff *skb); | |
447 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
448 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
449 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
450 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
451 | unsigned long val); | |
561f1103 | 452 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 453 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 454 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
455 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
456 | struct net_bridge_mdb_htable *mdb, | |
457 | struct br_ip *dst); | |
458 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
459 | struct net_bridge_port *port, struct br_ip *group); | |
460 | extern void br_multicast_free_pg(struct rcu_head *head); | |
461 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
462 | struct net_bridge_port *port, | |
463 | struct br_ip *group, | |
ccb1c31a AW |
464 | struct net_bridge_port_group *next, |
465 | unsigned char state); | |
ee07c6e7 | 466 | extern void br_mdb_init(void); |
63233159 | 467 | extern void br_mdb_uninit(void); |
37a393bc CW |
468 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
469 | struct br_ip *group, int type); | |
85b35269 | 470 | |
cfd56754 CW |
471 | #define mlock_dereference(X, br) \ |
472 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
473 | ||
474 | #if IS_ENABLED(CONFIG_IPV6) | |
475 | #include <net/addrconf.h> | |
476 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
477 | { | |
478 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
479 | return 1; | |
480 | return 0; | |
481 | } | |
482 | #endif | |
483 | ||
85b35269 SS |
484 | static inline bool br_multicast_is_router(struct net_bridge *br) |
485 | { | |
486 | return br->multicast_router == 2 || | |
487 | (br->multicast_router == 1 && | |
488 | timer_pending(&br->multicast_router_timer)); | |
489 | } | |
eb1d1641 HX |
490 | #else |
491 | static inline int br_multicast_rcv(struct net_bridge *br, | |
492 | struct net_bridge_port *port, | |
493 | struct sk_buff *skb) | |
494 | { | |
495 | return 0; | |
496 | } | |
497 | ||
498 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
499 | struct sk_buff *skb) | |
500 | { | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
505 | { | |
506 | } | |
507 | ||
508 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
509 | { | |
510 | } | |
511 | ||
512 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
513 | { | |
514 | } | |
515 | ||
516 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
517 | { | |
518 | } | |
519 | ||
520 | static inline void br_multicast_init(struct net_bridge *br) | |
521 | { | |
522 | } | |
523 | ||
524 | static inline void br_multicast_open(struct net_bridge *br) | |
525 | { | |
526 | } | |
527 | ||
528 | static inline void br_multicast_stop(struct net_bridge *br) | |
529 | { | |
530 | } | |
5cb5e947 HX |
531 | |
532 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
533 | struct sk_buff *skb) | |
534 | { | |
535 | } | |
536 | ||
537 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
538 | struct sk_buff *skb, | |
539 | struct sk_buff *skb2) | |
540 | { | |
541 | } | |
eb1d1641 HX |
542 | static inline bool br_multicast_is_router(struct net_bridge *br) |
543 | { | |
85b35269 | 544 | return 0; |
eb1d1641 | 545 | } |
fdb184d1 RR |
546 | static inline void br_mdb_init(void) |
547 | { | |
548 | } | |
549 | static inline void br_mdb_uninit(void) | |
550 | { | |
551 | } | |
85b35269 | 552 | #endif |
eb1d1641 | 553 | |
243a2e63 VY |
554 | /* br_vlan.c */ |
555 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 VY |
556 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
557 | struct sk_buff *skb); | |
85f46c6b VY |
558 | extern bool br_allowed_egress(struct net_bridge *br, |
559 | const struct net_port_vlans *v, | |
560 | const struct sk_buff *skb); | |
243a2e63 VY |
561 | extern int br_vlan_add(struct net_bridge *br, u16 vid); |
562 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); | |
563 | extern void br_vlan_flush(struct net_bridge *br); | |
564 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
565 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid); | |
566 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
567 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
a37b85c9 VY |
568 | |
569 | static inline struct net_port_vlans *br_get_vlan_info( | |
570 | const struct net_bridge *br) | |
571 | { | |
572 | return rcu_dereference(br->vlan_info); | |
573 | } | |
574 | ||
575 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
576 | const struct net_bridge_port *p) | |
577 | { | |
578 | return rcu_dereference(p->vlan_info); | |
579 | } | |
580 | ||
581 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
582 | * skb, the vlan tag will always be present if the frame was tagged. | |
583 | */ | |
584 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
585 | { | |
586 | int err = 0; | |
587 | ||
588 | if (vlan_tx_tag_present(skb)) | |
589 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
590 | else { | |
591 | *vid = 0; | |
592 | err = -EINVAL; | |
593 | } | |
594 | ||
595 | return err; | |
596 | } | |
243a2e63 | 597 | #else |
a37b85c9 VY |
598 | static inline bool br_allowed_ingress(struct net_bridge *br, |
599 | struct net_port_vlans *v, | |
600 | struct sk_buff *skb) | |
601 | { | |
602 | return true; | |
603 | } | |
604 | ||
85f46c6b VY |
605 | static inline bool br_allowed_egress(struct net_bridge *br, |
606 | const struct net_port_vlans *v, | |
607 | const struct sk_buff *skb) | |
608 | { | |
609 | return true; | |
610 | } | |
611 | ||
243a2e63 VY |
612 | static inline int br_vlan_add(struct net_bridge *br, u16 vid) |
613 | { | |
614 | return -EOPNOTSUPP; | |
615 | } | |
616 | ||
617 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
618 | { | |
619 | return -EOPNOTSUPP; | |
620 | } | |
621 | ||
622 | static inline void br_vlan_flush(struct net_bridge *br) | |
623 | { | |
624 | } | |
625 | ||
626 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid) | |
627 | { | |
628 | return -EOPNOTSUPP; | |
629 | } | |
630 | ||
631 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
632 | { | |
633 | return -EOPNOTSUPP; | |
634 | } | |
635 | ||
636 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
637 | { | |
638 | } | |
639 | ||
a37b85c9 VY |
640 | static inline struct net_port_vlans *br_get_vlan_info( |
641 | const struct net_bridge *br) | |
642 | { | |
643 | return NULL; | |
644 | } | |
645 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
646 | const struct net_bridge_port *p) | |
647 | { | |
648 | return NULL; | |
649 | } | |
650 | ||
651 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb) | |
652 | { | |
653 | return 0; | |
654 | } | |
243a2e63 VY |
655 | #endif |
656 | ||
1da177e4 | 657 | /* br_netfilter.c */ |
c0909713 | 658 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
659 | extern int br_netfilter_init(void); |
660 | extern void br_netfilter_fini(void); | |
4adf0af6 | 661 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
662 | #else |
663 | #define br_netfilter_init() (0) | |
664 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 665 | #define br_netfilter_rtable_init(x) |
c0909713 | 666 | #endif |
1da177e4 LT |
667 | |
668 | /* br_stp.c */ | |
669 | extern void br_log_state(const struct net_bridge_port *p); | |
670 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 671 | u16 port_no); |
1da177e4 LT |
672 | extern void br_init_port(struct net_bridge_port *p); |
673 | extern void br_become_designated_port(struct net_bridge_port *p); | |
674 | ||
14f98f25 | 675 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
676 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
677 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
678 | ||
679 | ||
1da177e4 LT |
680 | /* br_stp_if.c */ |
681 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
682 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 683 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
684 | extern void br_stp_enable_port(struct net_bridge_port *p); |
685 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 686 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 687 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
688 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
689 | u16 newprio); | |
14f98f25 | 690 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
691 | unsigned long newprio); | |
692 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
693 | unsigned long path_cost); | |
1da177e4 LT |
694 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
695 | ||
696 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
697 | struct stp_proto; |
698 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
699 | struct net_device *dev); | |
1da177e4 LT |
700 | |
701 | /* br_stp_timer.c */ | |
702 | extern void br_stp_timer_init(struct net_bridge *br); | |
703 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
704 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
705 | ||
706 | /* br.c */ | |
e6373c4c | 707 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
708 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
709 | #endif | |
1da177e4 | 710 | |
11dc1f36 | 711 | /* br_netlink.c */ |
149ddd83 | 712 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 713 | extern int br_netlink_init(void); |
11dc1f36 SH |
714 | extern void br_netlink_fini(void); |
715 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 716 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 717 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 718 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 719 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 720 | |
1da177e4 LT |
721 | #ifdef CONFIG_SYSFS |
722 | /* br_sysfs_if.c */ | |
52cf25d0 | 723 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 724 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 725 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
726 | |
727 | /* br_sysfs_br.c */ | |
728 | extern int br_sysfs_addbr(struct net_device *dev); | |
729 | extern void br_sysfs_delbr(struct net_device *dev); | |
730 | ||
731 | #else | |
732 | ||
0cb2bbbe LJ |
733 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
734 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
735 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
736 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
737 | #endif /* CONFIG_SYSFS */ |
738 | ||
739 | #endif |