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 | ||
cc0fdd80 LL |
69 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
70 | /* our own querier */ | |
71 | struct bridge_mcast_query { | |
72 | struct timer_list timer; | |
73 | u32 startup_sent; | |
74 | }; | |
75 | ||
76 | /* other querier */ | |
77 | struct bridge_mcast_querier { | |
78 | struct timer_list timer; | |
79 | unsigned long delay_time; | |
80 | }; | |
81 | #endif | |
82 | ||
243a2e63 VY |
83 | struct net_port_vlans { |
84 | u16 port_idx; | |
78851988 | 85 | u16 pvid; |
243a2e63 VY |
86 | union { |
87 | struct net_bridge_port *port; | |
88 | struct net_bridge *br; | |
89 | } parent; | |
90 | struct rcu_head rcu; | |
91 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 92 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 93 | u16 num_vlans; |
243a2e63 VY |
94 | }; |
95 | ||
1da177e4 LT |
96 | struct net_bridge_fdb_entry |
97 | { | |
98 | struct hlist_node hlist; | |
99 | struct net_bridge_port *dst; | |
100 | ||
101 | struct rcu_head rcu; | |
7cd8861a | 102 | unsigned long updated; |
103 | unsigned long used; | |
1da177e4 LT |
104 | mac_addr addr; |
105 | unsigned char is_local; | |
106 | unsigned char is_static; | |
2ba071ec | 107 | __u16 vlan_id; |
1da177e4 LT |
108 | }; |
109 | ||
eb1d1641 HX |
110 | struct net_bridge_port_group { |
111 | struct net_bridge_port *port; | |
e8051688 | 112 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
113 | struct hlist_node mglist; |
114 | struct rcu_head rcu; | |
115 | struct timer_list timer; | |
8ef2a9a5 | 116 | struct br_ip addr; |
ccb1c31a | 117 | unsigned char state; |
eb1d1641 HX |
118 | }; |
119 | ||
120 | struct net_bridge_mdb_entry | |
121 | { | |
122 | struct hlist_node hlist[2]; | |
eb1d1641 | 123 | struct net_bridge *br; |
e8051688 | 124 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
125 | struct rcu_head rcu; |
126 | struct timer_list timer; | |
8ef2a9a5 | 127 | struct br_ip addr; |
8a870178 | 128 | bool mglist; |
9f00b2e7 | 129 | bool timer_armed; |
eb1d1641 HX |
130 | }; |
131 | ||
132 | struct net_bridge_mdb_htable | |
133 | { | |
134 | struct hlist_head *mhash; | |
135 | struct rcu_head rcu; | |
136 | struct net_bridge_mdb_htable *old; | |
137 | u32 size; | |
138 | u32 max; | |
139 | u32 secret; | |
140 | u32 ver; | |
141 | }; | |
142 | ||
1da177e4 LT |
143 | struct net_bridge_port |
144 | { | |
145 | struct net_bridge *br; | |
146 | struct net_device *dev; | |
147 | struct list_head list; | |
148 | ||
149 | /* STP */ | |
150 | u8 priority; | |
151 | u8 state; | |
152 | u16 port_no; | |
153 | unsigned char topology_change_ack; | |
154 | unsigned char config_pending; | |
155 | port_id port_id; | |
156 | port_id designated_port; | |
157 | bridge_id designated_root; | |
158 | bridge_id designated_bridge; | |
159 | u32 path_cost; | |
160 | u32 designated_cost; | |
0c03150e | 161 | unsigned long designated_age; |
1da177e4 LT |
162 | |
163 | struct timer_list forward_delay_timer; | |
164 | struct timer_list hold_timer; | |
165 | struct timer_list message_age_timer; | |
166 | struct kobject kobj; | |
167 | struct rcu_head rcu; | |
3982d3d2 FA |
168 | |
169 | unsigned long flags; | |
170 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 171 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 172 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 173 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 174 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 175 | #define BR_LEARNING 0x00000020 |
867a5943 | 176 | #define BR_FLOOD 0x00000040 |
eb1d1641 HX |
177 | |
178 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
cc0fdd80 LL |
179 | struct bridge_mcast_query ip4_query; |
180 | #if IS_ENABLED(CONFIG_IPV6) | |
181 | struct bridge_mcast_query ip6_query; | |
182 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
183 | unsigned char multicast_router; |
184 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
185 | struct hlist_head mglist; |
186 | struct hlist_node rlist; | |
187 | #endif | |
e0f43752 SA |
188 | |
189 | #ifdef CONFIG_SYSFS | |
190 | char sysfs_name[IFNAMSIZ]; | |
191 | #endif | |
91d2c34a HX |
192 | |
193 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
194 | struct netpoll *np; | |
195 | #endif | |
243a2e63 VY |
196 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
197 | struct net_port_vlans __rcu *vlan_info; | |
198 | #endif | |
1da177e4 LT |
199 | }; |
200 | ||
f350a0a8 JP |
201 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
202 | ||
b5ed54e9 | 203 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
204 | { | |
2469ffd7 JF |
205 | struct net_bridge_port *port = |
206 | rcu_dereference_rtnl(dev->rx_handler_data); | |
207 | ||
b5ed54e9 | 208 | return br_port_exists(dev) ? port : NULL; |
209 | } | |
210 | ||
ec1e5610 | 211 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 212 | { |
ec1e5610 ED |
213 | return br_port_exists(dev) ? |
214 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 215 | } |
216 | ||
0eae88f3 | 217 | struct br_cpu_netstats { |
406818ff ED |
218 | u64 rx_packets; |
219 | u64 rx_bytes; | |
220 | u64 tx_packets; | |
221 | u64 tx_bytes; | |
222 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
223 | }; |
224 | ||
1da177e4 LT |
225 | struct net_bridge |
226 | { | |
227 | spinlock_t lock; | |
228 | struct list_head port_list; | |
229 | struct net_device *dev; | |
14bb4789 | 230 | |
0eae88f3 | 231 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
232 | spinlock_t hash_lock; |
233 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
234 | #ifdef CONFIG_BRIDGE_NETFILTER |
235 | struct rtable fake_rtable; | |
4df53d8b PM |
236 | bool nf_call_iptables; |
237 | bool nf_call_ip6tables; | |
238 | bool nf_call_arptables; | |
4adf0af6 | 239 | #endif |
515853cc | 240 | u16 group_fwd_mask; |
241 | ||
1da177e4 LT |
242 | /* STP */ |
243 | bridge_id designated_root; | |
244 | bridge_id bridge_id; | |
245 | u32 root_path_cost; | |
246 | unsigned long max_age; | |
247 | unsigned long hello_time; | |
248 | unsigned long forward_delay; | |
249 | unsigned long bridge_max_age; | |
250 | unsigned long ageing_time; | |
251 | unsigned long bridge_hello_time; | |
252 | unsigned long bridge_forward_delay; | |
253 | ||
fda93d92 | 254 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 255 | u16 root_port; |
9cde0708 SH |
256 | |
257 | enum { | |
258 | BR_NO_STP, /* no spanning tree */ | |
259 | BR_KERNEL_STP, /* old STP in kernel */ | |
260 | BR_USER_STP, /* new RSTP in userspace */ | |
261 | } stp_enabled; | |
262 | ||
1da177e4 LT |
263 | unsigned char topology_change; |
264 | unsigned char topology_change_detected; | |
265 | ||
eb1d1641 HX |
266 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
267 | unsigned char multicast_router; | |
268 | ||
269 | u8 multicast_disabled:1; | |
c5c23260 | 270 | u8 multicast_querier:1; |
1c8ad5bf | 271 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
272 | |
273 | u32 hash_elasticity; | |
274 | u32 hash_max; | |
275 | ||
276 | u32 multicast_last_member_count; | |
eb1d1641 HX |
277 | u32 multicast_startup_query_count; |
278 | ||
279 | unsigned long multicast_last_member_interval; | |
280 | unsigned long multicast_membership_interval; | |
281 | unsigned long multicast_querier_interval; | |
282 | unsigned long multicast_query_interval; | |
283 | unsigned long multicast_query_response_interval; | |
284 | unsigned long multicast_startup_query_interval; | |
285 | ||
286 | spinlock_t multicast_lock; | |
e8051688 | 287 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 288 | struct hlist_head router_list; |
eb1d1641 HX |
289 | |
290 | struct timer_list multicast_router_timer; | |
cc0fdd80 LL |
291 | struct bridge_mcast_querier ip4_querier; |
292 | struct bridge_mcast_query ip4_query; | |
293 | #if IS_ENABLED(CONFIG_IPV6) | |
294 | struct bridge_mcast_querier ip6_querier; | |
295 | struct bridge_mcast_query ip6_query; | |
296 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
297 | #endif |
298 | ||
1da177e4 LT |
299 | struct timer_list hello_timer; |
300 | struct timer_list tcn_timer; | |
301 | struct timer_list topology_change_timer; | |
302 | struct timer_list gc_timer; | |
43b98c4a | 303 | struct kobject *ifobj; |
243a2e63 VY |
304 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
305 | u8 vlan_enabled; | |
306 | struct net_port_vlans __rcu *vlan_info; | |
307 | #endif | |
1da177e4 LT |
308 | }; |
309 | ||
68b7c895 HX |
310 | struct br_input_skb_cb { |
311 | struct net_device *brdev; | |
32dec5dd | 312 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
313 | int igmp; |
314 | int mrouters_only; | |
32dec5dd | 315 | #endif |
68b7c895 HX |
316 | }; |
317 | ||
318 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
319 | ||
32dec5dd YH |
320 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
321 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
322 | #else | |
323 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
324 | #endif | |
325 | ||
28a16c97 | 326 | #define br_printk(level, br, format, args...) \ |
327 | printk(level "%s: " format, (br)->dev->name, ##args) | |
328 | ||
329 | #define br_err(__br, format, args...) \ | |
330 | br_printk(KERN_ERR, __br, format, ##args) | |
331 | #define br_warn(__br, format, args...) \ | |
332 | br_printk(KERN_WARNING, __br, format, ##args) | |
333 | #define br_notice(__br, format, args...) \ | |
334 | br_printk(KERN_NOTICE, __br, format, ##args) | |
335 | #define br_info(__br, format, args...) \ | |
336 | br_printk(KERN_INFO, __br, format, ##args) | |
337 | ||
338 | #define br_debug(br, format, args...) \ | |
339 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
340 | ||
1da177e4 | 341 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
342 | |
343 | /* called under bridge lock */ | |
344 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
345 | { | |
346 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
347 | } | |
348 | ||
1da177e4 LT |
349 | /* br_device.c */ |
350 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 351 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
352 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
353 | struct net_device *dev); | |
cfb478da | 354 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
355 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
356 | struct sk_buff *skb) | |
357 | { | |
358 | struct netpoll *np = p->np; | |
359 | ||
360 | if (np) | |
361 | netpoll_send_skb(np, skb); | |
362 | } | |
363 | ||
47be03a2 | 364 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 365 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 366 | #else |
9f70b0fc | 367 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
368 | struct sk_buff *skb) |
369 | { | |
370 | } | |
cfb478da | 371 | |
47be03a2 | 372 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
373 | { |
374 | return 0; | |
375 | } | |
376 | ||
377 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
378 | { | |
379 | } | |
cfb478da | 380 | #endif |
1da177e4 LT |
381 | |
382 | /* br_fdb.c */ | |
87a596e0 | 383 | extern int br_fdb_init(void); |
1da177e4 | 384 | extern void br_fdb_fini(void); |
9cf63747 | 385 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
386 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
387 | const unsigned char *newaddr); | |
43598813 | 388 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
389 | extern void br_fdb_cleanup(unsigned long arg); |
390 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 391 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 392 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
393 | const unsigned char *addr, |
394 | __u16 vid); | |
da678292 | 395 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 396 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
397 | unsigned long count, unsigned long off); |
398 | extern int br_fdb_insert(struct net_bridge *br, | |
399 | struct net_bridge_port *source, | |
bc9a25d2 VY |
400 | const unsigned char *addr, |
401 | u16 vid); | |
1da177e4 LT |
402 | extern void br_fdb_update(struct net_bridge *br, |
403 | struct net_bridge_port *source, | |
2ba071ec VY |
404 | const unsigned char *addr, |
405 | u16 vid); | |
bc9a25d2 | 406 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 407 | |
1690be63 | 408 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 409 | struct net_device *dev, |
6b6e2725 | 410 | const unsigned char *addr); |
edc7d573 | 411 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 412 | struct net_device *dev, |
6b6e2725 | 413 | const unsigned char *addr, |
77162022 JF |
414 | u16 nlh_flags); |
415 | extern int br_fdb_dump(struct sk_buff *skb, | |
416 | struct netlink_callback *cb, | |
417 | struct net_device *dev, | |
418 | int idx); | |
1da177e4 LT |
419 | |
420 | /* br_forward.c */ | |
421 | extern void br_deliver(const struct net_bridge_port *to, | |
422 | struct sk_buff *skb); | |
423 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
424 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 425 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 426 | extern int br_forward_finish(struct sk_buff *skb); |
867a5943 VY |
427 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, |
428 | bool unicast); | |
b33084be | 429 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
867a5943 | 430 | struct sk_buff *skb2, bool unicast); |
1da177e4 LT |
431 | |
432 | /* br_if.c */ | |
269def7c | 433 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
434 | extern int br_add_bridge(struct net *net, const char *name); |
435 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 436 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
437 | extern int br_add_if(struct net_bridge *br, |
438 | struct net_device *dev); | |
439 | extern int br_del_if(struct net_bridge *br, | |
440 | struct net_device *dev); | |
441 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
442 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
443 | netdev_features_t features); | |
1da177e4 LT |
444 | |
445 | /* br_input.c */ | |
446 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 447 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
448 | |
449 | /* br_ioctl.c */ | |
450 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 451 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 452 | |
eb1d1641 HX |
453 | /* br_multicast.c */ |
454 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 455 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
456 | extern int br_multicast_rcv(struct net_bridge *br, |
457 | struct net_bridge_port *port, | |
458 | struct sk_buff *skb); | |
459 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 460 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
461 | extern void br_multicast_add_port(struct net_bridge_port *port); |
462 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
463 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
464 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
465 | extern void br_multicast_init(struct net_bridge *br); | |
466 | extern void br_multicast_open(struct net_bridge *br); | |
467 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
468 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
469 | struct sk_buff *skb); | |
470 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
471 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
472 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
473 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
474 | unsigned long val); | |
561f1103 | 475 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 476 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 477 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
478 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
479 | struct net_bridge_mdb_htable *mdb, | |
480 | struct br_ip *dst); | |
481 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
482 | struct net_bridge_port *port, struct br_ip *group); | |
483 | extern void br_multicast_free_pg(struct rcu_head *head); | |
484 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
485 | struct net_bridge_port *port, | |
486 | struct br_ip *group, | |
762a3d89 | 487 | struct net_bridge_port_group __rcu *next, |
ccb1c31a | 488 | unsigned char state); |
ee07c6e7 | 489 | extern void br_mdb_init(void); |
63233159 | 490 | extern void br_mdb_uninit(void); |
37a393bc CW |
491 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
492 | struct br_ip *group, int type); | |
85b35269 | 493 | |
cfd56754 CW |
494 | #define mlock_dereference(X, br) \ |
495 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
496 | ||
85b35269 SS |
497 | static inline bool br_multicast_is_router(struct net_bridge *br) |
498 | { | |
499 | return br->multicast_router == 2 || | |
500 | (br->multicast_router == 1 && | |
501 | timer_pending(&br->multicast_router_timer)); | |
502 | } | |
b00589af | 503 | |
cc0fdd80 LL |
504 | static inline bool |
505 | __br_multicast_querier_exists(struct net_bridge *br, | |
506 | struct bridge_mcast_querier *querier) | |
b00589af | 507 | { |
cc0fdd80 LL |
508 | return time_is_before_jiffies(querier->delay_time) && |
509 | (br->multicast_querier || timer_pending(&querier->timer)); | |
510 | } | |
511 | ||
512 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
513 | struct ethhdr *eth) | |
514 | { | |
515 | switch (eth->h_proto) { | |
516 | case (htons(ETH_P_IP)): | |
517 | return __br_multicast_querier_exists(br, &br->ip4_querier); | |
518 | #if IS_ENABLED(CONFIG_IPV6) | |
519 | case (htons(ETH_P_IPV6)): | |
520 | return __br_multicast_querier_exists(br, &br->ip6_querier); | |
521 | #endif | |
522 | default: | |
523 | return false; | |
524 | } | |
b00589af | 525 | } |
eb1d1641 HX |
526 | #else |
527 | static inline int br_multicast_rcv(struct net_bridge *br, | |
528 | struct net_bridge_port *port, | |
529 | struct sk_buff *skb) | |
530 | { | |
531 | return 0; | |
532 | } | |
533 | ||
534 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 535 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
536 | { |
537 | return NULL; | |
538 | } | |
539 | ||
540 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
541 | { | |
542 | } | |
543 | ||
544 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
545 | { | |
546 | } | |
547 | ||
548 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
549 | { | |
550 | } | |
551 | ||
552 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
553 | { | |
554 | } | |
555 | ||
556 | static inline void br_multicast_init(struct net_bridge *br) | |
557 | { | |
558 | } | |
559 | ||
560 | static inline void br_multicast_open(struct net_bridge *br) | |
561 | { | |
562 | } | |
563 | ||
564 | static inline void br_multicast_stop(struct net_bridge *br) | |
565 | { | |
566 | } | |
5cb5e947 HX |
567 | |
568 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
569 | struct sk_buff *skb) | |
570 | { | |
571 | } | |
572 | ||
573 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
574 | struct sk_buff *skb, | |
575 | struct sk_buff *skb2) | |
576 | { | |
577 | } | |
eb1d1641 HX |
578 | static inline bool br_multicast_is_router(struct net_bridge *br) |
579 | { | |
85b35269 | 580 | return 0; |
eb1d1641 | 581 | } |
cc0fdd80 LL |
582 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
583 | struct ethhdr *eth) | |
b00589af LL |
584 | { |
585 | return false; | |
586 | } | |
fdb184d1 RR |
587 | static inline void br_mdb_init(void) |
588 | { | |
589 | } | |
590 | static inline void br_mdb_uninit(void) | |
591 | { | |
592 | } | |
85b35269 | 593 | #endif |
eb1d1641 | 594 | |
243a2e63 VY |
595 | /* br_vlan.c */ |
596 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 597 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 598 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
599 | extern bool br_allowed_egress(struct net_bridge *br, |
600 | const struct net_port_vlans *v, | |
601 | const struct sk_buff *skb); | |
78851988 VY |
602 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
603 | const struct net_port_vlans *v, | |
604 | struct sk_buff *skb); | |
552406c4 | 605 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
606 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
607 | extern void br_vlan_flush(struct net_bridge *br); | |
608 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 609 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
610 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
611 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 612 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
613 | |
614 | static inline struct net_port_vlans *br_get_vlan_info( | |
615 | const struct net_bridge *br) | |
616 | { | |
1690be63 | 617 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
618 | } |
619 | ||
620 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
621 | const struct net_bridge_port *p) | |
622 | { | |
1690be63 | 623 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
624 | } |
625 | ||
626 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
627 | * skb, the vlan tag will always be present if the frame was tagged. | |
628 | */ | |
629 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
630 | { | |
631 | int err = 0; | |
632 | ||
633 | if (vlan_tx_tag_present(skb)) | |
634 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
635 | else { | |
636 | *vid = 0; | |
637 | err = -EINVAL; | |
638 | } | |
639 | ||
640 | return err; | |
641 | } | |
78851988 VY |
642 | |
643 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
644 | { | |
645 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
646 | * vid wasn't set | |
647 | */ | |
648 | smp_rmb(); | |
649 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
650 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
651 | VLAN_N_VID; | |
652 | } | |
653 | ||
243a2e63 | 654 | #else |
a37b85c9 VY |
655 | static inline bool br_allowed_ingress(struct net_bridge *br, |
656 | struct net_port_vlans *v, | |
78851988 VY |
657 | struct sk_buff *skb, |
658 | u16 *vid) | |
a37b85c9 VY |
659 | { |
660 | return true; | |
661 | } | |
662 | ||
85f46c6b VY |
663 | static inline bool br_allowed_egress(struct net_bridge *br, |
664 | const struct net_port_vlans *v, | |
665 | const struct sk_buff *skb) | |
666 | { | |
667 | return true; | |
668 | } | |
669 | ||
78851988 VY |
670 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
671 | const struct net_port_vlans *v, | |
672 | struct sk_buff *skb) | |
673 | { | |
674 | return skb; | |
675 | } | |
676 | ||
552406c4 | 677 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
678 | { |
679 | return -EOPNOTSUPP; | |
680 | } | |
681 | ||
682 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
683 | { | |
684 | return -EOPNOTSUPP; | |
685 | } | |
686 | ||
687 | static inline void br_vlan_flush(struct net_bridge *br) | |
688 | { | |
689 | } | |
690 | ||
552406c4 | 691 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
692 | { |
693 | return -EOPNOTSUPP; | |
694 | } | |
695 | ||
696 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
697 | { | |
698 | return -EOPNOTSUPP; | |
699 | } | |
700 | ||
701 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
702 | { | |
703 | } | |
704 | ||
a37b85c9 VY |
705 | static inline struct net_port_vlans *br_get_vlan_info( |
706 | const struct net_bridge *br) | |
707 | { | |
708 | return NULL; | |
709 | } | |
710 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
711 | const struct net_bridge_port *p) | |
712 | { | |
713 | return NULL; | |
714 | } | |
715 | ||
bc9a25d2 VY |
716 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
717 | { | |
718 | return false; | |
719 | } | |
720 | ||
78851988 | 721 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
722 | { |
723 | return 0; | |
724 | } | |
78851988 VY |
725 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
726 | { | |
727 | return VLAN_N_VID; /* Returns invalid vid */ | |
728 | } | |
243a2e63 VY |
729 | #endif |
730 | ||
1da177e4 | 731 | /* br_netfilter.c */ |
c0909713 | 732 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
733 | extern int br_netfilter_init(void); |
734 | extern void br_netfilter_fini(void); | |
4adf0af6 | 735 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
736 | #else |
737 | #define br_netfilter_init() (0) | |
738 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 739 | #define br_netfilter_rtable_init(x) |
c0909713 | 740 | #endif |
1da177e4 LT |
741 | |
742 | /* br_stp.c */ | |
743 | extern void br_log_state(const struct net_bridge_port *p); | |
744 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 745 | u16 port_no); |
1da177e4 LT |
746 | extern void br_init_port(struct net_bridge_port *p); |
747 | extern void br_become_designated_port(struct net_bridge_port *p); | |
748 | ||
be4f154d | 749 | extern void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
14f98f25 | 750 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
751 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
752 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
753 | ||
754 | ||
1da177e4 LT |
755 | /* br_stp_if.c */ |
756 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
757 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 758 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
759 | extern void br_stp_enable_port(struct net_bridge_port *p); |
760 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 761 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 762 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
763 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
764 | u16 newprio); | |
14f98f25 | 765 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
766 | unsigned long newprio); | |
767 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
768 | unsigned long path_cost); | |
1da177e4 LT |
769 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
770 | ||
771 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
772 | struct stp_proto; |
773 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
774 | struct net_device *dev); | |
1da177e4 LT |
775 | |
776 | /* br_stp_timer.c */ | |
777 | extern void br_stp_timer_init(struct net_bridge *br); | |
778 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
779 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
780 | ||
781 | /* br.c */ | |
e6373c4c | 782 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
783 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
784 | #endif | |
1da177e4 | 785 | |
11dc1f36 | 786 | /* br_netlink.c */ |
149ddd83 | 787 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 788 | extern int br_netlink_init(void); |
11dc1f36 SH |
789 | extern void br_netlink_fini(void); |
790 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 791 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 792 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 793 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 794 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 795 | |
1da177e4 LT |
796 | #ifdef CONFIG_SYSFS |
797 | /* br_sysfs_if.c */ | |
52cf25d0 | 798 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 799 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 800 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
801 | |
802 | /* br_sysfs_br.c */ | |
803 | extern int br_sysfs_addbr(struct net_device *dev); | |
804 | extern void br_sysfs_delbr(struct net_device *dev); | |
805 | ||
806 | #else | |
807 | ||
0cb2bbbe LJ |
808 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
809 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
810 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
811 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
812 | #endif /* CONFIG_SYSFS */ |
813 | ||
814 | #endif |