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; | |
b0e9a30d | 66 | __u16 vid; |
8ef2a9a5 YH |
67 | }; |
68 | ||
243a2e63 VY |
69 | struct net_port_vlans { |
70 | u16 port_idx; | |
78851988 | 71 | u16 pvid; |
243a2e63 VY |
72 | union { |
73 | struct net_bridge_port *port; | |
74 | struct net_bridge *br; | |
75 | } parent; | |
76 | struct rcu_head rcu; | |
77 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 78 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 79 | u16 num_vlans; |
243a2e63 VY |
80 | }; |
81 | ||
1da177e4 LT |
82 | struct net_bridge_fdb_entry |
83 | { | |
84 | struct hlist_node hlist; | |
85 | struct net_bridge_port *dst; | |
86 | ||
87 | struct rcu_head rcu; | |
7cd8861a | 88 | unsigned long updated; |
89 | unsigned long used; | |
1da177e4 LT |
90 | mac_addr addr; |
91 | unsigned char is_local; | |
92 | unsigned char is_static; | |
2ba071ec | 93 | __u16 vlan_id; |
1da177e4 LT |
94 | }; |
95 | ||
eb1d1641 HX |
96 | struct net_bridge_port_group { |
97 | struct net_bridge_port *port; | |
e8051688 | 98 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
99 | struct hlist_node mglist; |
100 | struct rcu_head rcu; | |
101 | struct timer_list timer; | |
8ef2a9a5 | 102 | struct br_ip addr; |
ccb1c31a | 103 | unsigned char state; |
eb1d1641 HX |
104 | }; |
105 | ||
106 | struct net_bridge_mdb_entry | |
107 | { | |
108 | struct hlist_node hlist[2]; | |
eb1d1641 | 109 | struct net_bridge *br; |
e8051688 | 110 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
111 | struct rcu_head rcu; |
112 | struct timer_list timer; | |
8ef2a9a5 | 113 | struct br_ip addr; |
8a870178 | 114 | bool mglist; |
9f00b2e7 | 115 | bool timer_armed; |
eb1d1641 HX |
116 | }; |
117 | ||
118 | struct net_bridge_mdb_htable | |
119 | { | |
120 | struct hlist_head *mhash; | |
121 | struct rcu_head rcu; | |
122 | struct net_bridge_mdb_htable *old; | |
123 | u32 size; | |
124 | u32 max; | |
125 | u32 secret; | |
126 | u32 ver; | |
127 | }; | |
128 | ||
1da177e4 LT |
129 | struct net_bridge_port |
130 | { | |
131 | struct net_bridge *br; | |
132 | struct net_device *dev; | |
133 | struct list_head list; | |
134 | ||
135 | /* STP */ | |
136 | u8 priority; | |
137 | u8 state; | |
138 | u16 port_no; | |
139 | unsigned char topology_change_ack; | |
140 | unsigned char config_pending; | |
141 | port_id port_id; | |
142 | port_id designated_port; | |
143 | bridge_id designated_root; | |
144 | bridge_id designated_bridge; | |
145 | u32 path_cost; | |
146 | u32 designated_cost; | |
0c03150e | 147 | unsigned long designated_age; |
1da177e4 LT |
148 | |
149 | struct timer_list forward_delay_timer; | |
150 | struct timer_list hold_timer; | |
151 | struct timer_list message_age_timer; | |
152 | struct kobject kobj; | |
153 | struct rcu_head rcu; | |
3982d3d2 FA |
154 | |
155 | unsigned long flags; | |
156 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 157 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 158 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 159 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 160 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 161 | #define BR_LEARNING 0x00000020 |
867a5943 | 162 | #define BR_FLOOD 0x00000040 |
eb1d1641 HX |
163 | |
164 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
165 | u32 multicast_startup_queries_sent; | |
166 | unsigned char multicast_router; | |
167 | struct timer_list multicast_router_timer; | |
168 | struct timer_list multicast_query_timer; | |
169 | struct hlist_head mglist; | |
170 | struct hlist_node rlist; | |
171 | #endif | |
e0f43752 SA |
172 | |
173 | #ifdef CONFIG_SYSFS | |
174 | char sysfs_name[IFNAMSIZ]; | |
175 | #endif | |
91d2c34a HX |
176 | |
177 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
178 | struct netpoll *np; | |
179 | #endif | |
243a2e63 VY |
180 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
181 | struct net_port_vlans __rcu *vlan_info; | |
182 | #endif | |
1da177e4 LT |
183 | }; |
184 | ||
f350a0a8 JP |
185 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
186 | ||
b5ed54e9 | 187 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
188 | { | |
2469ffd7 JF |
189 | struct net_bridge_port *port = |
190 | rcu_dereference_rtnl(dev->rx_handler_data); | |
191 | ||
b5ed54e9 | 192 | return br_port_exists(dev) ? port : NULL; |
193 | } | |
194 | ||
ec1e5610 | 195 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 196 | { |
ec1e5610 ED |
197 | return br_port_exists(dev) ? |
198 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 199 | } |
200 | ||
0eae88f3 | 201 | struct br_cpu_netstats { |
406818ff ED |
202 | u64 rx_packets; |
203 | u64 rx_bytes; | |
204 | u64 tx_packets; | |
205 | u64 tx_bytes; | |
206 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
207 | }; |
208 | ||
1da177e4 LT |
209 | struct net_bridge |
210 | { | |
211 | spinlock_t lock; | |
212 | struct list_head port_list; | |
213 | struct net_device *dev; | |
14bb4789 | 214 | |
0eae88f3 | 215 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
216 | spinlock_t hash_lock; |
217 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
218 | #ifdef CONFIG_BRIDGE_NETFILTER |
219 | struct rtable fake_rtable; | |
4df53d8b PM |
220 | bool nf_call_iptables; |
221 | bool nf_call_ip6tables; | |
222 | bool nf_call_arptables; | |
4adf0af6 | 223 | #endif |
515853cc | 224 | u16 group_fwd_mask; |
225 | ||
1da177e4 LT |
226 | /* STP */ |
227 | bridge_id designated_root; | |
228 | bridge_id bridge_id; | |
229 | u32 root_path_cost; | |
230 | unsigned long max_age; | |
231 | unsigned long hello_time; | |
232 | unsigned long forward_delay; | |
233 | unsigned long bridge_max_age; | |
234 | unsigned long ageing_time; | |
235 | unsigned long bridge_hello_time; | |
236 | unsigned long bridge_forward_delay; | |
237 | ||
fda93d92 | 238 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 239 | u16 root_port; |
9cde0708 SH |
240 | |
241 | enum { | |
242 | BR_NO_STP, /* no spanning tree */ | |
243 | BR_KERNEL_STP, /* old STP in kernel */ | |
244 | BR_USER_STP, /* new RSTP in userspace */ | |
245 | } stp_enabled; | |
246 | ||
1da177e4 LT |
247 | unsigned char topology_change; |
248 | unsigned char topology_change_detected; | |
249 | ||
eb1d1641 HX |
250 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
251 | unsigned char multicast_router; | |
252 | ||
253 | u8 multicast_disabled:1; | |
c5c23260 | 254 | u8 multicast_querier:1; |
1c8ad5bf | 255 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
256 | |
257 | u32 hash_elasticity; | |
258 | u32 hash_max; | |
259 | ||
260 | u32 multicast_last_member_count; | |
261 | u32 multicast_startup_queries_sent; | |
262 | u32 multicast_startup_query_count; | |
263 | ||
264 | unsigned long multicast_last_member_interval; | |
265 | unsigned long multicast_membership_interval; | |
266 | unsigned long multicast_querier_interval; | |
267 | unsigned long multicast_query_interval; | |
268 | unsigned long multicast_query_response_interval; | |
269 | unsigned long multicast_startup_query_interval; | |
270 | ||
271 | spinlock_t multicast_lock; | |
e8051688 | 272 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 273 | struct hlist_head router_list; |
eb1d1641 HX |
274 | |
275 | struct timer_list multicast_router_timer; | |
276 | struct timer_list multicast_querier_timer; | |
277 | struct timer_list multicast_query_timer; | |
278 | #endif | |
279 | ||
1da177e4 LT |
280 | struct timer_list hello_timer; |
281 | struct timer_list tcn_timer; | |
282 | struct timer_list topology_change_timer; | |
283 | struct timer_list gc_timer; | |
43b98c4a | 284 | struct kobject *ifobj; |
243a2e63 VY |
285 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
286 | u8 vlan_enabled; | |
287 | struct net_port_vlans __rcu *vlan_info; | |
288 | #endif | |
1da177e4 LT |
289 | }; |
290 | ||
68b7c895 HX |
291 | struct br_input_skb_cb { |
292 | struct net_device *brdev; | |
32dec5dd | 293 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
294 | int igmp; |
295 | int mrouters_only; | |
32dec5dd | 296 | #endif |
68b7c895 HX |
297 | }; |
298 | ||
299 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
300 | ||
32dec5dd YH |
301 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
302 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
303 | #else | |
304 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
305 | #endif | |
306 | ||
28a16c97 | 307 | #define br_printk(level, br, format, args...) \ |
308 | printk(level "%s: " format, (br)->dev->name, ##args) | |
309 | ||
310 | #define br_err(__br, format, args...) \ | |
311 | br_printk(KERN_ERR, __br, format, ##args) | |
312 | #define br_warn(__br, format, args...) \ | |
313 | br_printk(KERN_WARNING, __br, format, ##args) | |
314 | #define br_notice(__br, format, args...) \ | |
315 | br_printk(KERN_NOTICE, __br, format, ##args) | |
316 | #define br_info(__br, format, args...) \ | |
317 | br_printk(KERN_INFO, __br, format, ##args) | |
318 | ||
319 | #define br_debug(br, format, args...) \ | |
320 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
321 | ||
1da177e4 | 322 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
323 | |
324 | /* called under bridge lock */ | |
325 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
326 | { | |
327 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
328 | } | |
329 | ||
1da177e4 LT |
330 | /* br_device.c */ |
331 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 332 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
333 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
334 | struct net_device *dev); | |
cfb478da | 335 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
336 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
337 | { | |
338 | return br->dev->npinfo; | |
339 | } | |
340 | ||
341 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
342 | struct sk_buff *skb) | |
343 | { | |
344 | struct netpoll *np = p->np; | |
345 | ||
346 | if (np) | |
347 | netpoll_send_skb(np, skb); | |
348 | } | |
349 | ||
47be03a2 | 350 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 351 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 352 | #else |
91d2c34a HX |
353 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
354 | { | |
355 | return NULL; | |
356 | } | |
357 | ||
9f70b0fc | 358 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
359 | struct sk_buff *skb) |
360 | { | |
361 | } | |
cfb478da | 362 | |
47be03a2 | 363 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
364 | { |
365 | return 0; | |
366 | } | |
367 | ||
368 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
369 | { | |
370 | } | |
cfb478da | 371 | #endif |
1da177e4 LT |
372 | |
373 | /* br_fdb.c */ | |
87a596e0 | 374 | extern int br_fdb_init(void); |
1da177e4 | 375 | extern void br_fdb_fini(void); |
9cf63747 | 376 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
377 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
378 | const unsigned char *newaddr); | |
43598813 | 379 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
380 | extern void br_fdb_cleanup(unsigned long arg); |
381 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 382 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 383 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
384 | const unsigned char *addr, |
385 | __u16 vid); | |
da678292 | 386 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 387 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
388 | unsigned long count, unsigned long off); |
389 | extern int br_fdb_insert(struct net_bridge *br, | |
390 | struct net_bridge_port *source, | |
bc9a25d2 VY |
391 | const unsigned char *addr, |
392 | u16 vid); | |
1da177e4 LT |
393 | extern void br_fdb_update(struct net_bridge *br, |
394 | struct net_bridge_port *source, | |
2ba071ec VY |
395 | const unsigned char *addr, |
396 | u16 vid); | |
bc9a25d2 | 397 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 398 | |
1690be63 | 399 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 400 | struct net_device *dev, |
6b6e2725 | 401 | const unsigned char *addr); |
edc7d573 | 402 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 403 | struct net_device *dev, |
6b6e2725 | 404 | const unsigned char *addr, |
77162022 JF |
405 | u16 nlh_flags); |
406 | extern int br_fdb_dump(struct sk_buff *skb, | |
407 | struct netlink_callback *cb, | |
408 | struct net_device *dev, | |
409 | int idx); | |
1da177e4 LT |
410 | |
411 | /* br_forward.c */ | |
412 | extern void br_deliver(const struct net_bridge_port *to, | |
413 | struct sk_buff *skb); | |
414 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
415 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 416 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 417 | extern int br_forward_finish(struct sk_buff *skb); |
867a5943 VY |
418 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, |
419 | bool unicast); | |
b33084be | 420 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
867a5943 | 421 | struct sk_buff *skb2, bool unicast); |
1da177e4 LT |
422 | |
423 | /* br_if.c */ | |
269def7c | 424 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
425 | extern int br_add_bridge(struct net *net, const char *name); |
426 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 427 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
428 | extern int br_add_if(struct net_bridge *br, |
429 | struct net_device *dev); | |
430 | extern int br_del_if(struct net_bridge *br, | |
431 | struct net_device *dev); | |
432 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
433 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
434 | netdev_features_t features); | |
1da177e4 LT |
435 | |
436 | /* br_input.c */ | |
437 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 438 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
439 | |
440 | /* br_ioctl.c */ | |
441 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 442 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 443 | |
eb1d1641 HX |
444 | /* br_multicast.c */ |
445 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 446 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
447 | extern int br_multicast_rcv(struct net_bridge *br, |
448 | struct net_bridge_port *port, | |
449 | struct sk_buff *skb); | |
450 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 451 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
452 | extern void br_multicast_add_port(struct net_bridge_port *port); |
453 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
454 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
455 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
456 | extern void br_multicast_init(struct net_bridge *br); | |
457 | extern void br_multicast_open(struct net_bridge *br); | |
458 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
459 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
460 | struct sk_buff *skb); | |
461 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
462 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
463 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
464 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
465 | unsigned long val); | |
561f1103 | 466 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 467 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 468 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
469 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
470 | struct net_bridge_mdb_htable *mdb, | |
471 | struct br_ip *dst); | |
472 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
473 | struct net_bridge_port *port, struct br_ip *group); | |
474 | extern void br_multicast_free_pg(struct rcu_head *head); | |
475 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
476 | struct net_bridge_port *port, | |
477 | struct br_ip *group, | |
ccb1c31a AW |
478 | struct net_bridge_port_group *next, |
479 | unsigned char state); | |
ee07c6e7 | 480 | extern void br_mdb_init(void); |
63233159 | 481 | extern void br_mdb_uninit(void); |
37a393bc CW |
482 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
483 | struct br_ip *group, int type); | |
85b35269 | 484 | |
cfd56754 CW |
485 | #define mlock_dereference(X, br) \ |
486 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
487 | ||
488 | #if IS_ENABLED(CONFIG_IPV6) | |
489 | #include <net/addrconf.h> | |
490 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
491 | { | |
492 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
493 | return 1; | |
494 | return 0; | |
495 | } | |
496 | #endif | |
497 | ||
85b35269 SS |
498 | static inline bool br_multicast_is_router(struct net_bridge *br) |
499 | { | |
500 | return br->multicast_router == 2 || | |
501 | (br->multicast_router == 1 && | |
502 | timer_pending(&br->multicast_router_timer)); | |
503 | } | |
eb1d1641 HX |
504 | #else |
505 | static inline int br_multicast_rcv(struct net_bridge *br, | |
506 | struct net_bridge_port *port, | |
507 | struct sk_buff *skb) | |
508 | { | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 513 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
514 | { |
515 | return NULL; | |
516 | } | |
517 | ||
518 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
519 | { | |
520 | } | |
521 | ||
522 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
523 | { | |
524 | } | |
525 | ||
526 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
527 | { | |
528 | } | |
529 | ||
530 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
531 | { | |
532 | } | |
533 | ||
534 | static inline void br_multicast_init(struct net_bridge *br) | |
535 | { | |
536 | } | |
537 | ||
538 | static inline void br_multicast_open(struct net_bridge *br) | |
539 | { | |
540 | } | |
541 | ||
542 | static inline void br_multicast_stop(struct net_bridge *br) | |
543 | { | |
544 | } | |
5cb5e947 HX |
545 | |
546 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
547 | struct sk_buff *skb) | |
548 | { | |
549 | } | |
550 | ||
551 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
552 | struct sk_buff *skb, | |
553 | struct sk_buff *skb2) | |
554 | { | |
555 | } | |
eb1d1641 HX |
556 | static inline bool br_multicast_is_router(struct net_bridge *br) |
557 | { | |
85b35269 | 558 | return 0; |
eb1d1641 | 559 | } |
fdb184d1 RR |
560 | static inline void br_mdb_init(void) |
561 | { | |
562 | } | |
563 | static inline void br_mdb_uninit(void) | |
564 | { | |
565 | } | |
85b35269 | 566 | #endif |
eb1d1641 | 567 | |
243a2e63 VY |
568 | /* br_vlan.c */ |
569 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 570 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 571 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
572 | extern bool br_allowed_egress(struct net_bridge *br, |
573 | const struct net_port_vlans *v, | |
574 | const struct sk_buff *skb); | |
78851988 VY |
575 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
576 | const struct net_port_vlans *v, | |
577 | struct sk_buff *skb); | |
552406c4 | 578 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
579 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
580 | extern void br_vlan_flush(struct net_bridge *br); | |
581 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 582 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
583 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
584 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 585 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
586 | |
587 | static inline struct net_port_vlans *br_get_vlan_info( | |
588 | const struct net_bridge *br) | |
589 | { | |
1690be63 | 590 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
591 | } |
592 | ||
593 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
594 | const struct net_bridge_port *p) | |
595 | { | |
1690be63 | 596 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
597 | } |
598 | ||
599 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
600 | * skb, the vlan tag will always be present if the frame was tagged. | |
601 | */ | |
602 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
603 | { | |
604 | int err = 0; | |
605 | ||
606 | if (vlan_tx_tag_present(skb)) | |
607 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
608 | else { | |
609 | *vid = 0; | |
610 | err = -EINVAL; | |
611 | } | |
612 | ||
613 | return err; | |
614 | } | |
78851988 VY |
615 | |
616 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
617 | { | |
618 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
619 | * vid wasn't set | |
620 | */ | |
621 | smp_rmb(); | |
622 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
623 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
624 | VLAN_N_VID; | |
625 | } | |
626 | ||
243a2e63 | 627 | #else |
a37b85c9 VY |
628 | static inline bool br_allowed_ingress(struct net_bridge *br, |
629 | struct net_port_vlans *v, | |
78851988 VY |
630 | struct sk_buff *skb, |
631 | u16 *vid) | |
a37b85c9 VY |
632 | { |
633 | return true; | |
634 | } | |
635 | ||
85f46c6b VY |
636 | static inline bool br_allowed_egress(struct net_bridge *br, |
637 | const struct net_port_vlans *v, | |
638 | const struct sk_buff *skb) | |
639 | { | |
640 | return true; | |
641 | } | |
642 | ||
78851988 VY |
643 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
644 | const struct net_port_vlans *v, | |
645 | struct sk_buff *skb) | |
646 | { | |
647 | return skb; | |
648 | } | |
649 | ||
552406c4 | 650 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
651 | { |
652 | return -EOPNOTSUPP; | |
653 | } | |
654 | ||
655 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
656 | { | |
657 | return -EOPNOTSUPP; | |
658 | } | |
659 | ||
660 | static inline void br_vlan_flush(struct net_bridge *br) | |
661 | { | |
662 | } | |
663 | ||
552406c4 | 664 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
665 | { |
666 | return -EOPNOTSUPP; | |
667 | } | |
668 | ||
669 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
670 | { | |
671 | return -EOPNOTSUPP; | |
672 | } | |
673 | ||
674 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
675 | { | |
676 | } | |
677 | ||
a37b85c9 VY |
678 | static inline struct net_port_vlans *br_get_vlan_info( |
679 | const struct net_bridge *br) | |
680 | { | |
681 | return NULL; | |
682 | } | |
683 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
684 | const struct net_bridge_port *p) | |
685 | { | |
686 | return NULL; | |
687 | } | |
688 | ||
bc9a25d2 VY |
689 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
690 | { | |
691 | return false; | |
692 | } | |
693 | ||
78851988 | 694 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
695 | { |
696 | return 0; | |
697 | } | |
78851988 VY |
698 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
699 | { | |
700 | return VLAN_N_VID; /* Returns invalid vid */ | |
701 | } | |
243a2e63 VY |
702 | #endif |
703 | ||
1da177e4 | 704 | /* br_netfilter.c */ |
c0909713 | 705 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
706 | extern int br_netfilter_init(void); |
707 | extern void br_netfilter_fini(void); | |
4adf0af6 | 708 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
709 | #else |
710 | #define br_netfilter_init() (0) | |
711 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 712 | #define br_netfilter_rtable_init(x) |
c0909713 | 713 | #endif |
1da177e4 LT |
714 | |
715 | /* br_stp.c */ | |
716 | extern void br_log_state(const struct net_bridge_port *p); | |
717 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 718 | u16 port_no); |
1da177e4 LT |
719 | extern void br_init_port(struct net_bridge_port *p); |
720 | extern void br_become_designated_port(struct net_bridge_port *p); | |
721 | ||
14f98f25 | 722 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
723 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
724 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
725 | ||
726 | ||
1da177e4 LT |
727 | /* br_stp_if.c */ |
728 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
729 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 730 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
731 | extern void br_stp_enable_port(struct net_bridge_port *p); |
732 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 733 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 734 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
735 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
736 | u16 newprio); | |
14f98f25 | 737 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
738 | unsigned long newprio); | |
739 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
740 | unsigned long path_cost); | |
1da177e4 LT |
741 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
742 | ||
743 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
744 | struct stp_proto; |
745 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
746 | struct net_device *dev); | |
1da177e4 LT |
747 | |
748 | /* br_stp_timer.c */ | |
749 | extern void br_stp_timer_init(struct net_bridge *br); | |
750 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
751 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
752 | ||
753 | /* br.c */ | |
e6373c4c | 754 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
755 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
756 | #endif | |
1da177e4 | 757 | |
11dc1f36 | 758 | /* br_netlink.c */ |
149ddd83 | 759 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 760 | extern int br_netlink_init(void); |
11dc1f36 SH |
761 | extern void br_netlink_fini(void); |
762 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 763 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 764 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 765 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 766 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 767 | |
1da177e4 LT |
768 | #ifdef CONFIG_SYSFS |
769 | /* br_sysfs_if.c */ | |
52cf25d0 | 770 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 771 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 772 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
773 | |
774 | /* br_sysfs_br.c */ | |
775 | extern int br_sysfs_addbr(struct net_device *dev); | |
776 | extern void br_sysfs_delbr(struct net_device *dev); | |
777 | ||
778 | #else | |
779 | ||
0cb2bbbe LJ |
780 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
781 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
782 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
783 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
784 | #endif /* CONFIG_SYSFS */ |
785 | ||
786 | #endif |