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; | |
78851988 | 70 | u16 pvid; |
243a2e63 VY |
71 | union { |
72 | struct net_bridge_port *port; | |
73 | struct net_bridge *br; | |
74 | } parent; | |
75 | struct rcu_head rcu; | |
76 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
6cbdceeb | 77 | u16 num_vlans; |
243a2e63 VY |
78 | }; |
79 | ||
1da177e4 LT |
80 | struct net_bridge_fdb_entry |
81 | { | |
82 | struct hlist_node hlist; | |
83 | struct net_bridge_port *dst; | |
84 | ||
85 | struct rcu_head rcu; | |
7cd8861a | 86 | unsigned long updated; |
87 | unsigned long used; | |
1da177e4 LT |
88 | mac_addr addr; |
89 | unsigned char is_local; | |
90 | unsigned char is_static; | |
91 | }; | |
92 | ||
eb1d1641 HX |
93 | struct net_bridge_port_group { |
94 | struct net_bridge_port *port; | |
e8051688 | 95 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
96 | struct hlist_node mglist; |
97 | struct rcu_head rcu; | |
98 | struct timer_list timer; | |
8ef2a9a5 | 99 | struct br_ip addr; |
ccb1c31a | 100 | unsigned char state; |
eb1d1641 HX |
101 | }; |
102 | ||
103 | struct net_bridge_mdb_entry | |
104 | { | |
105 | struct hlist_node hlist[2]; | |
eb1d1641 | 106 | struct net_bridge *br; |
e8051688 | 107 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
108 | struct rcu_head rcu; |
109 | struct timer_list timer; | |
8ef2a9a5 | 110 | struct br_ip addr; |
8a870178 | 111 | bool mglist; |
eb1d1641 HX |
112 | }; |
113 | ||
114 | struct net_bridge_mdb_htable | |
115 | { | |
116 | struct hlist_head *mhash; | |
117 | struct rcu_head rcu; | |
118 | struct net_bridge_mdb_htable *old; | |
119 | u32 size; | |
120 | u32 max; | |
121 | u32 secret; | |
122 | u32 ver; | |
123 | }; | |
124 | ||
1da177e4 LT |
125 | struct net_bridge_port |
126 | { | |
127 | struct net_bridge *br; | |
128 | struct net_device *dev; | |
129 | struct list_head list; | |
130 | ||
131 | /* STP */ | |
132 | u8 priority; | |
133 | u8 state; | |
134 | u16 port_no; | |
135 | unsigned char topology_change_ack; | |
136 | unsigned char config_pending; | |
137 | port_id port_id; | |
138 | port_id designated_port; | |
139 | bridge_id designated_root; | |
140 | bridge_id designated_bridge; | |
141 | u32 path_cost; | |
142 | u32 designated_cost; | |
0c03150e | 143 | unsigned long designated_age; |
1da177e4 LT |
144 | |
145 | struct timer_list forward_delay_timer; | |
146 | struct timer_list hold_timer; | |
147 | struct timer_list message_age_timer; | |
148 | struct kobject kobj; | |
149 | struct rcu_head rcu; | |
3982d3d2 FA |
150 | |
151 | unsigned long flags; | |
152 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 153 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 154 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 155 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
eb1d1641 HX |
156 | |
157 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
158 | u32 multicast_startup_queries_sent; | |
159 | unsigned char multicast_router; | |
160 | struct timer_list multicast_router_timer; | |
161 | struct timer_list multicast_query_timer; | |
162 | struct hlist_head mglist; | |
163 | struct hlist_node rlist; | |
164 | #endif | |
e0f43752 SA |
165 | |
166 | #ifdef CONFIG_SYSFS | |
167 | char sysfs_name[IFNAMSIZ]; | |
168 | #endif | |
91d2c34a HX |
169 | |
170 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
171 | struct netpoll *np; | |
172 | #endif | |
243a2e63 VY |
173 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
174 | struct net_port_vlans __rcu *vlan_info; | |
175 | #endif | |
1da177e4 LT |
176 | }; |
177 | ||
f350a0a8 JP |
178 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
179 | ||
b5ed54e9 | 180 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
181 | { | |
2469ffd7 JF |
182 | struct net_bridge_port *port = |
183 | rcu_dereference_rtnl(dev->rx_handler_data); | |
184 | ||
b5ed54e9 | 185 | return br_port_exists(dev) ? port : NULL; |
186 | } | |
187 | ||
ec1e5610 | 188 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 189 | { |
ec1e5610 ED |
190 | return br_port_exists(dev) ? |
191 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 192 | } |
193 | ||
0eae88f3 | 194 | struct br_cpu_netstats { |
406818ff ED |
195 | u64 rx_packets; |
196 | u64 rx_bytes; | |
197 | u64 tx_packets; | |
198 | u64 tx_bytes; | |
199 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
200 | }; |
201 | ||
1da177e4 LT |
202 | struct net_bridge |
203 | { | |
204 | spinlock_t lock; | |
205 | struct list_head port_list; | |
206 | struct net_device *dev; | |
14bb4789 | 207 | |
0eae88f3 | 208 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
209 | spinlock_t hash_lock; |
210 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
211 | #ifdef CONFIG_BRIDGE_NETFILTER |
212 | struct rtable fake_rtable; | |
4df53d8b PM |
213 | bool nf_call_iptables; |
214 | bool nf_call_ip6tables; | |
215 | bool nf_call_arptables; | |
4adf0af6 | 216 | #endif |
515853cc | 217 | u16 group_fwd_mask; |
218 | ||
1da177e4 LT |
219 | /* STP */ |
220 | bridge_id designated_root; | |
221 | bridge_id bridge_id; | |
222 | u32 root_path_cost; | |
223 | unsigned long max_age; | |
224 | unsigned long hello_time; | |
225 | unsigned long forward_delay; | |
226 | unsigned long bridge_max_age; | |
227 | unsigned long ageing_time; | |
228 | unsigned long bridge_hello_time; | |
229 | unsigned long bridge_forward_delay; | |
230 | ||
fda93d92 | 231 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 232 | u16 root_port; |
9cde0708 SH |
233 | |
234 | enum { | |
235 | BR_NO_STP, /* no spanning tree */ | |
236 | BR_KERNEL_STP, /* old STP in kernel */ | |
237 | BR_USER_STP, /* new RSTP in userspace */ | |
238 | } stp_enabled; | |
239 | ||
1da177e4 LT |
240 | unsigned char topology_change; |
241 | unsigned char topology_change_detected; | |
242 | ||
eb1d1641 HX |
243 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
244 | unsigned char multicast_router; | |
245 | ||
246 | u8 multicast_disabled:1; | |
c5c23260 | 247 | u8 multicast_querier:1; |
eb1d1641 HX |
248 | |
249 | u32 hash_elasticity; | |
250 | u32 hash_max; | |
251 | ||
252 | u32 multicast_last_member_count; | |
253 | u32 multicast_startup_queries_sent; | |
254 | u32 multicast_startup_query_count; | |
255 | ||
256 | unsigned long multicast_last_member_interval; | |
257 | unsigned long multicast_membership_interval; | |
258 | unsigned long multicast_querier_interval; | |
259 | unsigned long multicast_query_interval; | |
260 | unsigned long multicast_query_response_interval; | |
261 | unsigned long multicast_startup_query_interval; | |
262 | ||
263 | spinlock_t multicast_lock; | |
e8051688 | 264 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 265 | struct hlist_head router_list; |
eb1d1641 HX |
266 | |
267 | struct timer_list multicast_router_timer; | |
268 | struct timer_list multicast_querier_timer; | |
269 | struct timer_list multicast_query_timer; | |
270 | #endif | |
271 | ||
1da177e4 LT |
272 | struct timer_list hello_timer; |
273 | struct timer_list tcn_timer; | |
274 | struct timer_list topology_change_timer; | |
275 | struct timer_list gc_timer; | |
43b98c4a | 276 | struct kobject *ifobj; |
243a2e63 VY |
277 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
278 | u8 vlan_enabled; | |
279 | struct net_port_vlans __rcu *vlan_info; | |
280 | #endif | |
1da177e4 LT |
281 | }; |
282 | ||
68b7c895 HX |
283 | struct br_input_skb_cb { |
284 | struct net_device *brdev; | |
32dec5dd | 285 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
286 | int igmp; |
287 | int mrouters_only; | |
32dec5dd | 288 | #endif |
68b7c895 HX |
289 | }; |
290 | ||
291 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
292 | ||
32dec5dd YH |
293 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
294 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
295 | #else | |
296 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
297 | #endif | |
298 | ||
28a16c97 | 299 | #define br_printk(level, br, format, args...) \ |
300 | printk(level "%s: " format, (br)->dev->name, ##args) | |
301 | ||
302 | #define br_err(__br, format, args...) \ | |
303 | br_printk(KERN_ERR, __br, format, ##args) | |
304 | #define br_warn(__br, format, args...) \ | |
305 | br_printk(KERN_WARNING, __br, format, ##args) | |
306 | #define br_notice(__br, format, args...) \ | |
307 | br_printk(KERN_NOTICE, __br, format, ##args) | |
308 | #define br_info(__br, format, args...) \ | |
309 | br_printk(KERN_INFO, __br, format, ##args) | |
310 | ||
311 | #define br_debug(br, format, args...) \ | |
312 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
313 | ||
1da177e4 | 314 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
315 | |
316 | /* called under bridge lock */ | |
317 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
318 | { | |
319 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
320 | } | |
321 | ||
1da177e4 LT |
322 | /* br_device.c */ |
323 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 324 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
325 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
326 | struct net_device *dev); | |
cfb478da | 327 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
328 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
329 | { | |
330 | return br->dev->npinfo; | |
331 | } | |
332 | ||
333 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
334 | struct sk_buff *skb) | |
335 | { | |
336 | struct netpoll *np = p->np; | |
337 | ||
338 | if (np) | |
339 | netpoll_send_skb(np, skb); | |
340 | } | |
341 | ||
47be03a2 | 342 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 343 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 344 | #else |
91d2c34a HX |
345 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
346 | { | |
347 | return NULL; | |
348 | } | |
349 | ||
9f70b0fc | 350 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
351 | struct sk_buff *skb) |
352 | { | |
353 | } | |
cfb478da | 354 | |
47be03a2 | 355 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
356 | { |
357 | return 0; | |
358 | } | |
359 | ||
360 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
361 | { | |
362 | } | |
cfb478da | 363 | #endif |
1da177e4 LT |
364 | |
365 | /* br_fdb.c */ | |
87a596e0 | 366 | extern int br_fdb_init(void); |
1da177e4 | 367 | extern void br_fdb_fini(void); |
9cf63747 | 368 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
369 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
370 | const unsigned char *newaddr); | |
43598813 | 371 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
372 | extern void br_fdb_cleanup(unsigned long arg); |
373 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 374 | const struct net_bridge_port *p, int do_all); |
1da177e4 LT |
375 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
376 | const unsigned char *addr); | |
da678292 | 377 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 378 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
379 | unsigned long count, unsigned long off); |
380 | extern int br_fdb_insert(struct net_bridge *br, | |
381 | struct net_bridge_port *source, | |
382 | const unsigned char *addr); | |
383 | extern void br_fdb_update(struct net_bridge *br, | |
384 | struct net_bridge_port *source, | |
385 | const unsigned char *addr); | |
77162022 JF |
386 | |
387 | extern int br_fdb_delete(struct ndmsg *ndm, | |
388 | struct net_device *dev, | |
6b6e2725 | 389 | const unsigned char *addr); |
edc7d573 | 390 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 391 | struct net_device *dev, |
6b6e2725 | 392 | const unsigned char *addr, |
77162022 JF |
393 | u16 nlh_flags); |
394 | extern int br_fdb_dump(struct sk_buff *skb, | |
395 | struct netlink_callback *cb, | |
396 | struct net_device *dev, | |
397 | int idx); | |
1da177e4 LT |
398 | |
399 | /* br_forward.c */ | |
400 | extern void br_deliver(const struct net_bridge_port *to, | |
401 | struct sk_buff *skb); | |
402 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
403 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 404 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 405 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 406 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
407 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
408 | struct sk_buff *skb2); | |
1da177e4 LT |
409 | |
410 | /* br_if.c */ | |
269def7c | 411 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
412 | extern int br_add_bridge(struct net *net, const char *name); |
413 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 414 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
415 | extern int br_add_if(struct net_bridge *br, |
416 | struct net_device *dev); | |
417 | extern int br_del_if(struct net_bridge *br, | |
418 | struct net_device *dev); | |
419 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
420 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
421 | netdev_features_t features); | |
1da177e4 LT |
422 | |
423 | /* br_input.c */ | |
424 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 425 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
426 | |
427 | /* br_ioctl.c */ | |
428 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 429 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 430 | |
eb1d1641 HX |
431 | /* br_multicast.c */ |
432 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 433 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
434 | extern int br_multicast_rcv(struct net_bridge *br, |
435 | struct net_bridge_port *port, | |
436 | struct sk_buff *skb); | |
437 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
438 | struct sk_buff *skb); | |
439 | extern void br_multicast_add_port(struct net_bridge_port *port); | |
440 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
441 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
442 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
443 | extern void br_multicast_init(struct net_bridge *br); | |
444 | extern void br_multicast_open(struct net_bridge *br); | |
445 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
446 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
447 | struct sk_buff *skb); | |
448 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
449 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
450 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
451 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
452 | unsigned long val); | |
561f1103 | 453 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 454 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 455 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
456 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
457 | struct net_bridge_mdb_htable *mdb, | |
458 | struct br_ip *dst); | |
459 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
460 | struct net_bridge_port *port, struct br_ip *group); | |
461 | extern void br_multicast_free_pg(struct rcu_head *head); | |
462 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
463 | struct net_bridge_port *port, | |
464 | struct br_ip *group, | |
ccb1c31a AW |
465 | struct net_bridge_port_group *next, |
466 | unsigned char state); | |
ee07c6e7 | 467 | extern void br_mdb_init(void); |
63233159 | 468 | extern void br_mdb_uninit(void); |
37a393bc CW |
469 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
470 | struct br_ip *group, int type); | |
85b35269 | 471 | |
cfd56754 CW |
472 | #define mlock_dereference(X, br) \ |
473 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
474 | ||
475 | #if IS_ENABLED(CONFIG_IPV6) | |
476 | #include <net/addrconf.h> | |
477 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
478 | { | |
479 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
480 | return 1; | |
481 | return 0; | |
482 | } | |
483 | #endif | |
484 | ||
85b35269 SS |
485 | static inline bool br_multicast_is_router(struct net_bridge *br) |
486 | { | |
487 | return br->multicast_router == 2 || | |
488 | (br->multicast_router == 1 && | |
489 | timer_pending(&br->multicast_router_timer)); | |
490 | } | |
eb1d1641 HX |
491 | #else |
492 | static inline int br_multicast_rcv(struct net_bridge *br, | |
493 | struct net_bridge_port *port, | |
494 | struct sk_buff *skb) | |
495 | { | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
500 | struct sk_buff *skb) | |
501 | { | |
502 | return NULL; | |
503 | } | |
504 | ||
505 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
506 | { | |
507 | } | |
508 | ||
509 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
510 | { | |
511 | } | |
512 | ||
513 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
514 | { | |
515 | } | |
516 | ||
517 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
518 | { | |
519 | } | |
520 | ||
521 | static inline void br_multicast_init(struct net_bridge *br) | |
522 | { | |
523 | } | |
524 | ||
525 | static inline void br_multicast_open(struct net_bridge *br) | |
526 | { | |
527 | } | |
528 | ||
529 | static inline void br_multicast_stop(struct net_bridge *br) | |
530 | { | |
531 | } | |
5cb5e947 HX |
532 | |
533 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
534 | struct sk_buff *skb) | |
535 | { | |
536 | } | |
537 | ||
538 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
539 | struct sk_buff *skb, | |
540 | struct sk_buff *skb2) | |
541 | { | |
542 | } | |
eb1d1641 HX |
543 | static inline bool br_multicast_is_router(struct net_bridge *br) |
544 | { | |
85b35269 | 545 | return 0; |
eb1d1641 | 546 | } |
fdb184d1 RR |
547 | static inline void br_mdb_init(void) |
548 | { | |
549 | } | |
550 | static inline void br_mdb_uninit(void) | |
551 | { | |
552 | } | |
85b35269 | 553 | #endif |
eb1d1641 | 554 | |
243a2e63 VY |
555 | /* br_vlan.c */ |
556 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 557 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 558 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
559 | extern bool br_allowed_egress(struct net_bridge *br, |
560 | const struct net_port_vlans *v, | |
561 | const struct sk_buff *skb); | |
78851988 VY |
562 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
563 | const struct net_port_vlans *v, | |
564 | struct sk_buff *skb); | |
552406c4 | 565 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
566 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
567 | extern void br_vlan_flush(struct net_bridge *br); | |
568 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 569 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
570 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
571 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
a37b85c9 VY |
572 | |
573 | static inline struct net_port_vlans *br_get_vlan_info( | |
574 | const struct net_bridge *br) | |
575 | { | |
576 | return rcu_dereference(br->vlan_info); | |
577 | } | |
578 | ||
579 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
580 | const struct net_bridge_port *p) | |
581 | { | |
582 | return rcu_dereference(p->vlan_info); | |
583 | } | |
584 | ||
585 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
586 | * skb, the vlan tag will always be present if the frame was tagged. | |
587 | */ | |
588 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
589 | { | |
590 | int err = 0; | |
591 | ||
592 | if (vlan_tx_tag_present(skb)) | |
593 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
594 | else { | |
595 | *vid = 0; | |
596 | err = -EINVAL; | |
597 | } | |
598 | ||
599 | return err; | |
600 | } | |
78851988 VY |
601 | |
602 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
603 | { | |
604 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
605 | * vid wasn't set | |
606 | */ | |
607 | smp_rmb(); | |
608 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
609 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
610 | VLAN_N_VID; | |
611 | } | |
612 | ||
243a2e63 | 613 | #else |
a37b85c9 VY |
614 | static inline bool br_allowed_ingress(struct net_bridge *br, |
615 | struct net_port_vlans *v, | |
78851988 VY |
616 | struct sk_buff *skb, |
617 | u16 *vid) | |
a37b85c9 VY |
618 | { |
619 | return true; | |
620 | } | |
621 | ||
85f46c6b VY |
622 | static inline bool br_allowed_egress(struct net_bridge *br, |
623 | const struct net_port_vlans *v, | |
624 | const struct sk_buff *skb) | |
625 | { | |
626 | return true; | |
627 | } | |
628 | ||
78851988 VY |
629 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
630 | const struct net_port_vlans *v, | |
631 | struct sk_buff *skb) | |
632 | { | |
633 | return skb; | |
634 | } | |
635 | ||
552406c4 | 636 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
637 | { |
638 | return -EOPNOTSUPP; | |
639 | } | |
640 | ||
641 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
642 | { | |
643 | return -EOPNOTSUPP; | |
644 | } | |
645 | ||
646 | static inline void br_vlan_flush(struct net_bridge *br) | |
647 | { | |
648 | } | |
649 | ||
552406c4 | 650 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
651 | { |
652 | return -EOPNOTSUPP; | |
653 | } | |
654 | ||
655 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
656 | { | |
657 | return -EOPNOTSUPP; | |
658 | } | |
659 | ||
660 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
661 | { | |
662 | } | |
663 | ||
a37b85c9 VY |
664 | static inline struct net_port_vlans *br_get_vlan_info( |
665 | const struct net_bridge *br) | |
666 | { | |
667 | return NULL; | |
668 | } | |
669 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
670 | const struct net_bridge_port *p) | |
671 | { | |
672 | return NULL; | |
673 | } | |
674 | ||
78851988 | 675 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
676 | { |
677 | return 0; | |
678 | } | |
78851988 VY |
679 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
680 | { | |
681 | return VLAN_N_VID; /* Returns invalid vid */ | |
682 | } | |
243a2e63 VY |
683 | #endif |
684 | ||
1da177e4 | 685 | /* br_netfilter.c */ |
c0909713 | 686 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
687 | extern int br_netfilter_init(void); |
688 | extern void br_netfilter_fini(void); | |
4adf0af6 | 689 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
690 | #else |
691 | #define br_netfilter_init() (0) | |
692 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 693 | #define br_netfilter_rtable_init(x) |
c0909713 | 694 | #endif |
1da177e4 LT |
695 | |
696 | /* br_stp.c */ | |
697 | extern void br_log_state(const struct net_bridge_port *p); | |
698 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 699 | u16 port_no); |
1da177e4 LT |
700 | extern void br_init_port(struct net_bridge_port *p); |
701 | extern void br_become_designated_port(struct net_bridge_port *p); | |
702 | ||
14f98f25 | 703 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
704 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
705 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
706 | ||
707 | ||
1da177e4 LT |
708 | /* br_stp_if.c */ |
709 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
710 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 711 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
712 | extern void br_stp_enable_port(struct net_bridge_port *p); |
713 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 714 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 715 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
716 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
717 | u16 newprio); | |
14f98f25 | 718 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
719 | unsigned long newprio); | |
720 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
721 | unsigned long path_cost); | |
1da177e4 LT |
722 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
723 | ||
724 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
725 | struct stp_proto; |
726 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
727 | struct net_device *dev); | |
1da177e4 LT |
728 | |
729 | /* br_stp_timer.c */ | |
730 | extern void br_stp_timer_init(struct net_bridge *br); | |
731 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
732 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
733 | ||
734 | /* br.c */ | |
e6373c4c | 735 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
736 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
737 | #endif | |
1da177e4 | 738 | |
11dc1f36 | 739 | /* br_netlink.c */ |
149ddd83 | 740 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 741 | extern int br_netlink_init(void); |
11dc1f36 SH |
742 | extern void br_netlink_fini(void); |
743 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 744 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 745 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 746 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 747 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 748 | |
1da177e4 LT |
749 | #ifdef CONFIG_SYSFS |
750 | /* br_sysfs_if.c */ | |
52cf25d0 | 751 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 752 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 753 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
754 | |
755 | /* br_sysfs_br.c */ | |
756 | extern int br_sysfs_addbr(struct net_device *dev); | |
757 | extern void br_sysfs_delbr(struct net_device *dev); | |
758 | ||
759 | #else | |
760 | ||
0cb2bbbe LJ |
761 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
762 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
763 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
764 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
765 | #endif /* CONFIG_SYSFS */ |
766 | ||
767 | #endif |