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 | { | |
716ec052 | 205 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 206 | } |
207 | ||
1fb1754a | 208 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 209 | { |
ec1e5610 ED |
210 | return br_port_exists(dev) ? |
211 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 212 | } |
213 | ||
0eae88f3 | 214 | struct br_cpu_netstats { |
406818ff ED |
215 | u64 rx_packets; |
216 | u64 rx_bytes; | |
217 | u64 tx_packets; | |
218 | u64 tx_bytes; | |
219 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
220 | }; |
221 | ||
1da177e4 LT |
222 | struct net_bridge |
223 | { | |
224 | spinlock_t lock; | |
225 | struct list_head port_list; | |
226 | struct net_device *dev; | |
14bb4789 | 227 | |
0eae88f3 | 228 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
229 | spinlock_t hash_lock; |
230 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
231 | #ifdef CONFIG_BRIDGE_NETFILTER |
232 | struct rtable fake_rtable; | |
4df53d8b PM |
233 | bool nf_call_iptables; |
234 | bool nf_call_ip6tables; | |
235 | bool nf_call_arptables; | |
4adf0af6 | 236 | #endif |
515853cc | 237 | u16 group_fwd_mask; |
238 | ||
1da177e4 LT |
239 | /* STP */ |
240 | bridge_id designated_root; | |
241 | bridge_id bridge_id; | |
242 | u32 root_path_cost; | |
243 | unsigned long max_age; | |
244 | unsigned long hello_time; | |
245 | unsigned long forward_delay; | |
246 | unsigned long bridge_max_age; | |
247 | unsigned long ageing_time; | |
248 | unsigned long bridge_hello_time; | |
249 | unsigned long bridge_forward_delay; | |
250 | ||
fda93d92 | 251 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 252 | u16 root_port; |
9cde0708 SH |
253 | |
254 | enum { | |
255 | BR_NO_STP, /* no spanning tree */ | |
256 | BR_KERNEL_STP, /* old STP in kernel */ | |
257 | BR_USER_STP, /* new RSTP in userspace */ | |
258 | } stp_enabled; | |
259 | ||
1da177e4 LT |
260 | unsigned char topology_change; |
261 | unsigned char topology_change_detected; | |
262 | ||
eb1d1641 HX |
263 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
264 | unsigned char multicast_router; | |
265 | ||
266 | u8 multicast_disabled:1; | |
c5c23260 | 267 | u8 multicast_querier:1; |
1c8ad5bf | 268 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
269 | |
270 | u32 hash_elasticity; | |
271 | u32 hash_max; | |
272 | ||
273 | u32 multicast_last_member_count; | |
eb1d1641 HX |
274 | u32 multicast_startup_query_count; |
275 | ||
276 | unsigned long multicast_last_member_interval; | |
277 | unsigned long multicast_membership_interval; | |
278 | unsigned long multicast_querier_interval; | |
279 | unsigned long multicast_query_interval; | |
280 | unsigned long multicast_query_response_interval; | |
281 | unsigned long multicast_startup_query_interval; | |
282 | ||
283 | spinlock_t multicast_lock; | |
e8051688 | 284 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 285 | struct hlist_head router_list; |
eb1d1641 HX |
286 | |
287 | struct timer_list multicast_router_timer; | |
cc0fdd80 LL |
288 | struct bridge_mcast_querier ip4_querier; |
289 | struct bridge_mcast_query ip4_query; | |
290 | #if IS_ENABLED(CONFIG_IPV6) | |
291 | struct bridge_mcast_querier ip6_querier; | |
292 | struct bridge_mcast_query ip6_query; | |
293 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
294 | #endif |
295 | ||
1da177e4 LT |
296 | struct timer_list hello_timer; |
297 | struct timer_list tcn_timer; | |
298 | struct timer_list topology_change_timer; | |
299 | struct timer_list gc_timer; | |
43b98c4a | 300 | struct kobject *ifobj; |
243a2e63 VY |
301 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
302 | u8 vlan_enabled; | |
303 | struct net_port_vlans __rcu *vlan_info; | |
304 | #endif | |
1da177e4 LT |
305 | }; |
306 | ||
68b7c895 HX |
307 | struct br_input_skb_cb { |
308 | struct net_device *brdev; | |
32dec5dd | 309 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
310 | int igmp; |
311 | int mrouters_only; | |
32dec5dd | 312 | #endif |
68b7c895 HX |
313 | }; |
314 | ||
315 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
316 | ||
32dec5dd YH |
317 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
318 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
319 | #else | |
320 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
321 | #endif | |
322 | ||
28a16c97 | 323 | #define br_printk(level, br, format, args...) \ |
324 | printk(level "%s: " format, (br)->dev->name, ##args) | |
325 | ||
326 | #define br_err(__br, format, args...) \ | |
327 | br_printk(KERN_ERR, __br, format, ##args) | |
328 | #define br_warn(__br, format, args...) \ | |
329 | br_printk(KERN_WARNING, __br, format, ##args) | |
330 | #define br_notice(__br, format, args...) \ | |
331 | br_printk(KERN_NOTICE, __br, format, ##args) | |
332 | #define br_info(__br, format, args...) \ | |
333 | br_printk(KERN_INFO, __br, format, ##args) | |
334 | ||
335 | #define br_debug(br, format, args...) \ | |
336 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
337 | ||
1da177e4 | 338 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
339 | |
340 | /* called under bridge lock */ | |
341 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
342 | { | |
343 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
344 | } | |
345 | ||
1da177e4 LT |
346 | /* br_device.c */ |
347 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 348 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
349 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
350 | struct net_device *dev); | |
cfb478da | 351 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
352 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
353 | struct sk_buff *skb) | |
354 | { | |
355 | struct netpoll *np = p->np; | |
356 | ||
357 | if (np) | |
358 | netpoll_send_skb(np, skb); | |
359 | } | |
360 | ||
47be03a2 | 361 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 362 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 363 | #else |
9f70b0fc | 364 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
365 | struct sk_buff *skb) |
366 | { | |
367 | } | |
cfb478da | 368 | |
47be03a2 | 369 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
370 | { |
371 | return 0; | |
372 | } | |
373 | ||
374 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
375 | { | |
376 | } | |
cfb478da | 377 | #endif |
1da177e4 LT |
378 | |
379 | /* br_fdb.c */ | |
87a596e0 | 380 | extern int br_fdb_init(void); |
1da177e4 | 381 | extern void br_fdb_fini(void); |
9cf63747 | 382 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
383 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
384 | const unsigned char *newaddr); | |
43598813 | 385 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
386 | extern void br_fdb_cleanup(unsigned long arg); |
387 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 388 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 389 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
390 | const unsigned char *addr, |
391 | __u16 vid); | |
da678292 | 392 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 393 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
394 | unsigned long count, unsigned long off); |
395 | extern int br_fdb_insert(struct net_bridge *br, | |
396 | struct net_bridge_port *source, | |
bc9a25d2 VY |
397 | const unsigned char *addr, |
398 | u16 vid); | |
1da177e4 LT |
399 | extern void br_fdb_update(struct net_bridge *br, |
400 | struct net_bridge_port *source, | |
2ba071ec VY |
401 | const unsigned char *addr, |
402 | u16 vid); | |
bc9a25d2 | 403 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 404 | |
1690be63 | 405 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 406 | struct net_device *dev, |
6b6e2725 | 407 | const unsigned char *addr); |
edc7d573 | 408 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 409 | struct net_device *dev, |
6b6e2725 | 410 | const unsigned char *addr, |
77162022 JF |
411 | u16 nlh_flags); |
412 | extern int br_fdb_dump(struct sk_buff *skb, | |
413 | struct netlink_callback *cb, | |
414 | struct net_device *dev, | |
415 | int idx); | |
1da177e4 LT |
416 | |
417 | /* br_forward.c */ | |
418 | extern void br_deliver(const struct net_bridge_port *to, | |
419 | struct sk_buff *skb); | |
420 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
421 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 422 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 423 | extern int br_forward_finish(struct sk_buff *skb); |
867a5943 VY |
424 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, |
425 | bool unicast); | |
b33084be | 426 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
867a5943 | 427 | struct sk_buff *skb2, bool unicast); |
1da177e4 LT |
428 | |
429 | /* br_if.c */ | |
269def7c | 430 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
431 | extern int br_add_bridge(struct net *net, const char *name); |
432 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 433 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
434 | extern int br_add_if(struct net_bridge *br, |
435 | struct net_device *dev); | |
436 | extern int br_del_if(struct net_bridge *br, | |
437 | struct net_device *dev); | |
438 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
439 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
440 | netdev_features_t features); | |
1da177e4 LT |
441 | |
442 | /* br_input.c */ | |
443 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 444 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
445 | |
446 | /* br_ioctl.c */ | |
447 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 448 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 449 | |
eb1d1641 HX |
450 | /* br_multicast.c */ |
451 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 452 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
453 | extern int br_multicast_rcv(struct net_bridge *br, |
454 | struct net_bridge_port *port, | |
455 | struct sk_buff *skb); | |
456 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 457 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
458 | extern void br_multicast_add_port(struct net_bridge_port *port); |
459 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
460 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
461 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
462 | extern void br_multicast_init(struct net_bridge *br); | |
463 | extern void br_multicast_open(struct net_bridge *br); | |
464 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
465 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
466 | struct sk_buff *skb); | |
467 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
468 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
469 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
470 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
471 | unsigned long val); | |
561f1103 | 472 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 473 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 474 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
475 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
476 | struct net_bridge_mdb_htable *mdb, | |
477 | struct br_ip *dst); | |
478 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
479 | struct net_bridge_port *port, struct br_ip *group); | |
480 | extern void br_multicast_free_pg(struct rcu_head *head); | |
481 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
482 | struct net_bridge_port *port, | |
483 | struct br_ip *group, | |
762a3d89 | 484 | struct net_bridge_port_group __rcu *next, |
ccb1c31a | 485 | unsigned char state); |
ee07c6e7 | 486 | extern void br_mdb_init(void); |
63233159 | 487 | extern void br_mdb_uninit(void); |
37a393bc CW |
488 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
489 | struct br_ip *group, int type); | |
85b35269 | 490 | |
cfd56754 CW |
491 | #define mlock_dereference(X, br) \ |
492 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
493 | ||
85b35269 SS |
494 | static inline bool br_multicast_is_router(struct net_bridge *br) |
495 | { | |
496 | return br->multicast_router == 2 || | |
497 | (br->multicast_router == 1 && | |
498 | timer_pending(&br->multicast_router_timer)); | |
499 | } | |
b00589af | 500 | |
cc0fdd80 LL |
501 | static inline bool |
502 | __br_multicast_querier_exists(struct net_bridge *br, | |
503 | struct bridge_mcast_querier *querier) | |
b00589af | 504 | { |
cc0fdd80 LL |
505 | return time_is_before_jiffies(querier->delay_time) && |
506 | (br->multicast_querier || timer_pending(&querier->timer)); | |
507 | } | |
508 | ||
509 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
510 | struct ethhdr *eth) | |
511 | { | |
512 | switch (eth->h_proto) { | |
513 | case (htons(ETH_P_IP)): | |
514 | return __br_multicast_querier_exists(br, &br->ip4_querier); | |
515 | #if IS_ENABLED(CONFIG_IPV6) | |
516 | case (htons(ETH_P_IPV6)): | |
517 | return __br_multicast_querier_exists(br, &br->ip6_querier); | |
518 | #endif | |
519 | default: | |
520 | return false; | |
521 | } | |
b00589af | 522 | } |
eb1d1641 HX |
523 | #else |
524 | static inline int br_multicast_rcv(struct net_bridge *br, | |
525 | struct net_bridge_port *port, | |
526 | struct sk_buff *skb) | |
527 | { | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 532 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
533 | { |
534 | return NULL; | |
535 | } | |
536 | ||
537 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
538 | { | |
539 | } | |
540 | ||
541 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
542 | { | |
543 | } | |
544 | ||
545 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
546 | { | |
547 | } | |
548 | ||
549 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
550 | { | |
551 | } | |
552 | ||
553 | static inline void br_multicast_init(struct net_bridge *br) | |
554 | { | |
555 | } | |
556 | ||
557 | static inline void br_multicast_open(struct net_bridge *br) | |
558 | { | |
559 | } | |
560 | ||
561 | static inline void br_multicast_stop(struct net_bridge *br) | |
562 | { | |
563 | } | |
5cb5e947 HX |
564 | |
565 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
566 | struct sk_buff *skb) | |
567 | { | |
568 | } | |
569 | ||
570 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
571 | struct sk_buff *skb, | |
572 | struct sk_buff *skb2) | |
573 | { | |
574 | } | |
eb1d1641 HX |
575 | static inline bool br_multicast_is_router(struct net_bridge *br) |
576 | { | |
85b35269 | 577 | return 0; |
eb1d1641 | 578 | } |
cc0fdd80 LL |
579 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
580 | struct ethhdr *eth) | |
b00589af LL |
581 | { |
582 | return false; | |
583 | } | |
fdb184d1 RR |
584 | static inline void br_mdb_init(void) |
585 | { | |
586 | } | |
587 | static inline void br_mdb_uninit(void) | |
588 | { | |
589 | } | |
85b35269 | 590 | #endif |
eb1d1641 | 591 | |
243a2e63 VY |
592 | /* br_vlan.c */ |
593 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 594 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 595 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
596 | extern bool br_allowed_egress(struct net_bridge *br, |
597 | const struct net_port_vlans *v, | |
598 | const struct sk_buff *skb); | |
78851988 VY |
599 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
600 | const struct net_port_vlans *v, | |
601 | struct sk_buff *skb); | |
552406c4 | 602 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
603 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
604 | extern void br_vlan_flush(struct net_bridge *br); | |
605 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 606 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
607 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
608 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 609 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
610 | |
611 | static inline struct net_port_vlans *br_get_vlan_info( | |
612 | const struct net_bridge *br) | |
613 | { | |
1690be63 | 614 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
615 | } |
616 | ||
617 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
618 | const struct net_bridge_port *p) | |
619 | { | |
1690be63 | 620 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
621 | } |
622 | ||
623 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
624 | * skb, the vlan tag will always be present if the frame was tagged. | |
625 | */ | |
626 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
627 | { | |
628 | int err = 0; | |
629 | ||
630 | if (vlan_tx_tag_present(skb)) | |
631 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
632 | else { | |
633 | *vid = 0; | |
634 | err = -EINVAL; | |
635 | } | |
636 | ||
637 | return err; | |
638 | } | |
78851988 VY |
639 | |
640 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
641 | { | |
642 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
643 | * vid wasn't set | |
644 | */ | |
645 | smp_rmb(); | |
646 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
647 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
648 | VLAN_N_VID; | |
649 | } | |
650 | ||
243a2e63 | 651 | #else |
a37b85c9 VY |
652 | static inline bool br_allowed_ingress(struct net_bridge *br, |
653 | struct net_port_vlans *v, | |
78851988 VY |
654 | struct sk_buff *skb, |
655 | u16 *vid) | |
a37b85c9 VY |
656 | { |
657 | return true; | |
658 | } | |
659 | ||
85f46c6b VY |
660 | static inline bool br_allowed_egress(struct net_bridge *br, |
661 | const struct net_port_vlans *v, | |
662 | const struct sk_buff *skb) | |
663 | { | |
664 | return true; | |
665 | } | |
666 | ||
78851988 VY |
667 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
668 | const struct net_port_vlans *v, | |
669 | struct sk_buff *skb) | |
670 | { | |
671 | return skb; | |
672 | } | |
673 | ||
552406c4 | 674 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
675 | { |
676 | return -EOPNOTSUPP; | |
677 | } | |
678 | ||
679 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
680 | { | |
681 | return -EOPNOTSUPP; | |
682 | } | |
683 | ||
684 | static inline void br_vlan_flush(struct net_bridge *br) | |
685 | { | |
686 | } | |
687 | ||
552406c4 | 688 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
689 | { |
690 | return -EOPNOTSUPP; | |
691 | } | |
692 | ||
693 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
694 | { | |
695 | return -EOPNOTSUPP; | |
696 | } | |
697 | ||
698 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
699 | { | |
700 | } | |
701 | ||
a37b85c9 VY |
702 | static inline struct net_port_vlans *br_get_vlan_info( |
703 | const struct net_bridge *br) | |
704 | { | |
705 | return NULL; | |
706 | } | |
707 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
708 | const struct net_bridge_port *p) | |
709 | { | |
710 | return NULL; | |
711 | } | |
712 | ||
bc9a25d2 VY |
713 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
714 | { | |
715 | return false; | |
716 | } | |
717 | ||
78851988 | 718 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
719 | { |
720 | return 0; | |
721 | } | |
78851988 VY |
722 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
723 | { | |
724 | return VLAN_N_VID; /* Returns invalid vid */ | |
725 | } | |
243a2e63 VY |
726 | #endif |
727 | ||
1da177e4 | 728 | /* br_netfilter.c */ |
c0909713 | 729 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
730 | extern int br_netfilter_init(void); |
731 | extern void br_netfilter_fini(void); | |
4adf0af6 | 732 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
733 | #else |
734 | #define br_netfilter_init() (0) | |
735 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 736 | #define br_netfilter_rtable_init(x) |
c0909713 | 737 | #endif |
1da177e4 LT |
738 | |
739 | /* br_stp.c */ | |
740 | extern void br_log_state(const struct net_bridge_port *p); | |
741 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 742 | u16 port_no); |
1da177e4 LT |
743 | extern void br_init_port(struct net_bridge_port *p); |
744 | extern void br_become_designated_port(struct net_bridge_port *p); | |
745 | ||
be4f154d | 746 | extern void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
14f98f25 | 747 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
748 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
749 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
750 | ||
751 | ||
1da177e4 LT |
752 | /* br_stp_if.c */ |
753 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
754 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 755 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
756 | extern void br_stp_enable_port(struct net_bridge_port *p); |
757 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 758 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 759 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
760 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
761 | u16 newprio); | |
14f98f25 | 762 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
763 | unsigned long newprio); | |
764 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
765 | unsigned long path_cost); | |
1da177e4 LT |
766 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
767 | ||
768 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
769 | struct stp_proto; |
770 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
771 | struct net_device *dev); | |
1da177e4 LT |
772 | |
773 | /* br_stp_timer.c */ | |
774 | extern void br_stp_timer_init(struct net_bridge *br); | |
775 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
776 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
777 | ||
778 | /* br.c */ | |
e6373c4c | 779 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
780 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
781 | #endif | |
1da177e4 | 782 | |
11dc1f36 | 783 | /* br_netlink.c */ |
149ddd83 | 784 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 785 | extern int br_netlink_init(void); |
11dc1f36 SH |
786 | extern void br_netlink_fini(void); |
787 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 788 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 789 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 790 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 791 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 792 | |
1da177e4 LT |
793 | #ifdef CONFIG_SYSFS |
794 | /* br_sysfs_if.c */ | |
52cf25d0 | 795 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 796 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 797 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
798 | |
799 | /* br_sysfs_br.c */ | |
800 | extern int br_sysfs_addbr(struct net_device *dev); | |
801 | extern void br_sysfs_delbr(struct net_device *dev); | |
802 | ||
803 | #else | |
804 | ||
0cb2bbbe LJ |
805 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
806 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
807 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
808 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
809 | #endif /* CONFIG_SYSFS */ |
810 | ||
811 | #endif |