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; |
eb1d1641 HX |
115 | }; |
116 | ||
117 | struct net_bridge_mdb_htable | |
118 | { | |
119 | struct hlist_head *mhash; | |
120 | struct rcu_head rcu; | |
121 | struct net_bridge_mdb_htable *old; | |
122 | u32 size; | |
123 | u32 max; | |
124 | u32 secret; | |
125 | u32 ver; | |
126 | }; | |
127 | ||
1da177e4 LT |
128 | struct net_bridge_port |
129 | { | |
130 | struct net_bridge *br; | |
131 | struct net_device *dev; | |
132 | struct list_head list; | |
133 | ||
134 | /* STP */ | |
135 | u8 priority; | |
136 | u8 state; | |
137 | u16 port_no; | |
138 | unsigned char topology_change_ack; | |
139 | unsigned char config_pending; | |
140 | port_id port_id; | |
141 | port_id designated_port; | |
142 | bridge_id designated_root; | |
143 | bridge_id designated_bridge; | |
144 | u32 path_cost; | |
145 | u32 designated_cost; | |
0c03150e | 146 | unsigned long designated_age; |
1da177e4 LT |
147 | |
148 | struct timer_list forward_delay_timer; | |
149 | struct timer_list hold_timer; | |
150 | struct timer_list message_age_timer; | |
151 | struct kobject kobj; | |
152 | struct rcu_head rcu; | |
3982d3d2 FA |
153 | |
154 | unsigned long flags; | |
155 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 156 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 157 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 158 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
eb1d1641 HX |
159 | |
160 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
161 | u32 multicast_startup_queries_sent; | |
162 | unsigned char multicast_router; | |
163 | struct timer_list multicast_router_timer; | |
164 | struct timer_list multicast_query_timer; | |
165 | struct hlist_head mglist; | |
166 | struct hlist_node rlist; | |
167 | #endif | |
e0f43752 SA |
168 | |
169 | #ifdef CONFIG_SYSFS | |
170 | char sysfs_name[IFNAMSIZ]; | |
171 | #endif | |
91d2c34a HX |
172 | |
173 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
174 | struct netpoll *np; | |
175 | #endif | |
243a2e63 VY |
176 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
177 | struct net_port_vlans __rcu *vlan_info; | |
178 | #endif | |
1da177e4 LT |
179 | }; |
180 | ||
f350a0a8 JP |
181 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
182 | ||
b5ed54e9 | 183 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
184 | { | |
2469ffd7 JF |
185 | struct net_bridge_port *port = |
186 | rcu_dereference_rtnl(dev->rx_handler_data); | |
187 | ||
b5ed54e9 | 188 | return br_port_exists(dev) ? port : NULL; |
189 | } | |
190 | ||
ec1e5610 | 191 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 192 | { |
ec1e5610 ED |
193 | return br_port_exists(dev) ? |
194 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 195 | } |
196 | ||
0eae88f3 | 197 | struct br_cpu_netstats { |
406818ff ED |
198 | u64 rx_packets; |
199 | u64 rx_bytes; | |
200 | u64 tx_packets; | |
201 | u64 tx_bytes; | |
202 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
203 | }; |
204 | ||
1da177e4 LT |
205 | struct net_bridge |
206 | { | |
207 | spinlock_t lock; | |
208 | struct list_head port_list; | |
209 | struct net_device *dev; | |
14bb4789 | 210 | |
0eae88f3 | 211 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
212 | spinlock_t hash_lock; |
213 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
214 | #ifdef CONFIG_BRIDGE_NETFILTER |
215 | struct rtable fake_rtable; | |
4df53d8b PM |
216 | bool nf_call_iptables; |
217 | bool nf_call_ip6tables; | |
218 | bool nf_call_arptables; | |
4adf0af6 | 219 | #endif |
515853cc | 220 | u16 group_fwd_mask; |
221 | ||
1da177e4 LT |
222 | /* STP */ |
223 | bridge_id designated_root; | |
224 | bridge_id bridge_id; | |
225 | u32 root_path_cost; | |
226 | unsigned long max_age; | |
227 | unsigned long hello_time; | |
228 | unsigned long forward_delay; | |
229 | unsigned long bridge_max_age; | |
230 | unsigned long ageing_time; | |
231 | unsigned long bridge_hello_time; | |
232 | unsigned long bridge_forward_delay; | |
233 | ||
fda93d92 | 234 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 235 | u16 root_port; |
9cde0708 SH |
236 | |
237 | enum { | |
238 | BR_NO_STP, /* no spanning tree */ | |
239 | BR_KERNEL_STP, /* old STP in kernel */ | |
240 | BR_USER_STP, /* new RSTP in userspace */ | |
241 | } stp_enabled; | |
242 | ||
1da177e4 LT |
243 | unsigned char topology_change; |
244 | unsigned char topology_change_detected; | |
245 | ||
eb1d1641 HX |
246 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
247 | unsigned char multicast_router; | |
248 | ||
249 | u8 multicast_disabled:1; | |
c5c23260 | 250 | u8 multicast_querier:1; |
eb1d1641 HX |
251 | |
252 | u32 hash_elasticity; | |
253 | u32 hash_max; | |
254 | ||
255 | u32 multicast_last_member_count; | |
256 | u32 multicast_startup_queries_sent; | |
257 | u32 multicast_startup_query_count; | |
258 | ||
259 | unsigned long multicast_last_member_interval; | |
260 | unsigned long multicast_membership_interval; | |
261 | unsigned long multicast_querier_interval; | |
262 | unsigned long multicast_query_interval; | |
263 | unsigned long multicast_query_response_interval; | |
264 | unsigned long multicast_startup_query_interval; | |
265 | ||
266 | spinlock_t multicast_lock; | |
e8051688 | 267 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 268 | struct hlist_head router_list; |
eb1d1641 HX |
269 | |
270 | struct timer_list multicast_router_timer; | |
271 | struct timer_list multicast_querier_timer; | |
272 | struct timer_list multicast_query_timer; | |
273 | #endif | |
274 | ||
1da177e4 LT |
275 | struct timer_list hello_timer; |
276 | struct timer_list tcn_timer; | |
277 | struct timer_list topology_change_timer; | |
278 | struct timer_list gc_timer; | |
43b98c4a | 279 | struct kobject *ifobj; |
243a2e63 VY |
280 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
281 | u8 vlan_enabled; | |
282 | struct net_port_vlans __rcu *vlan_info; | |
283 | #endif | |
1da177e4 LT |
284 | }; |
285 | ||
68b7c895 HX |
286 | struct br_input_skb_cb { |
287 | struct net_device *brdev; | |
32dec5dd | 288 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
289 | int igmp; |
290 | int mrouters_only; | |
32dec5dd | 291 | #endif |
68b7c895 HX |
292 | }; |
293 | ||
294 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
295 | ||
32dec5dd YH |
296 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
297 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
298 | #else | |
299 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
300 | #endif | |
301 | ||
28a16c97 | 302 | #define br_printk(level, br, format, args...) \ |
303 | printk(level "%s: " format, (br)->dev->name, ##args) | |
304 | ||
305 | #define br_err(__br, format, args...) \ | |
306 | br_printk(KERN_ERR, __br, format, ##args) | |
307 | #define br_warn(__br, format, args...) \ | |
308 | br_printk(KERN_WARNING, __br, format, ##args) | |
309 | #define br_notice(__br, format, args...) \ | |
310 | br_printk(KERN_NOTICE, __br, format, ##args) | |
311 | #define br_info(__br, format, args...) \ | |
312 | br_printk(KERN_INFO, __br, format, ##args) | |
313 | ||
314 | #define br_debug(br, format, args...) \ | |
315 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
316 | ||
1da177e4 | 317 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
318 | |
319 | /* called under bridge lock */ | |
320 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
321 | { | |
322 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
323 | } | |
324 | ||
1da177e4 LT |
325 | /* br_device.c */ |
326 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 327 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
328 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
329 | struct net_device *dev); | |
cfb478da | 330 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
331 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
332 | { | |
333 | return br->dev->npinfo; | |
334 | } | |
335 | ||
336 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
337 | struct sk_buff *skb) | |
338 | { | |
339 | struct netpoll *np = p->np; | |
340 | ||
341 | if (np) | |
342 | netpoll_send_skb(np, skb); | |
343 | } | |
344 | ||
47be03a2 | 345 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 346 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 347 | #else |
91d2c34a HX |
348 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
349 | { | |
350 | return NULL; | |
351 | } | |
352 | ||
9f70b0fc | 353 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
354 | struct sk_buff *skb) |
355 | { | |
356 | } | |
cfb478da | 357 | |
47be03a2 | 358 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
359 | { |
360 | return 0; | |
361 | } | |
362 | ||
363 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
364 | { | |
365 | } | |
cfb478da | 366 | #endif |
1da177e4 LT |
367 | |
368 | /* br_fdb.c */ | |
87a596e0 | 369 | extern int br_fdb_init(void); |
1da177e4 | 370 | extern void br_fdb_fini(void); |
9cf63747 | 371 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
372 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
373 | const unsigned char *newaddr); | |
43598813 | 374 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
375 | extern void br_fdb_cleanup(unsigned long arg); |
376 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 377 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 378 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
379 | const unsigned char *addr, |
380 | __u16 vid); | |
da678292 | 381 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 382 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
383 | unsigned long count, unsigned long off); |
384 | extern int br_fdb_insert(struct net_bridge *br, | |
385 | struct net_bridge_port *source, | |
bc9a25d2 VY |
386 | const unsigned char *addr, |
387 | u16 vid); | |
1da177e4 LT |
388 | extern void br_fdb_update(struct net_bridge *br, |
389 | struct net_bridge_port *source, | |
2ba071ec VY |
390 | const unsigned char *addr, |
391 | u16 vid); | |
bc9a25d2 | 392 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 393 | |
1690be63 | 394 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 395 | struct net_device *dev, |
6b6e2725 | 396 | const unsigned char *addr); |
edc7d573 | 397 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 398 | struct net_device *dev, |
6b6e2725 | 399 | const unsigned char *addr, |
77162022 JF |
400 | u16 nlh_flags); |
401 | extern int br_fdb_dump(struct sk_buff *skb, | |
402 | struct netlink_callback *cb, | |
403 | struct net_device *dev, | |
404 | int idx); | |
1da177e4 LT |
405 | |
406 | /* br_forward.c */ | |
407 | extern void br_deliver(const struct net_bridge_port *to, | |
408 | struct sk_buff *skb); | |
409 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
410 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 411 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 412 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 413 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
414 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
415 | struct sk_buff *skb2); | |
1da177e4 LT |
416 | |
417 | /* br_if.c */ | |
269def7c | 418 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
419 | extern int br_add_bridge(struct net *net, const char *name); |
420 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 421 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
422 | extern int br_add_if(struct net_bridge *br, |
423 | struct net_device *dev); | |
424 | extern int br_del_if(struct net_bridge *br, | |
425 | struct net_device *dev); | |
426 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
427 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
428 | netdev_features_t features); | |
1da177e4 LT |
429 | |
430 | /* br_input.c */ | |
431 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 432 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
433 | |
434 | /* br_ioctl.c */ | |
435 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 436 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 437 | |
eb1d1641 HX |
438 | /* br_multicast.c */ |
439 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 440 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
441 | extern int br_multicast_rcv(struct net_bridge *br, |
442 | struct net_bridge_port *port, | |
443 | struct sk_buff *skb); | |
444 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 445 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
446 | extern void br_multicast_add_port(struct net_bridge_port *port); |
447 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
448 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
449 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
450 | extern void br_multicast_init(struct net_bridge *br); | |
451 | extern void br_multicast_open(struct net_bridge *br); | |
452 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
453 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
454 | struct sk_buff *skb); | |
455 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
456 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
457 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
458 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
459 | unsigned long val); | |
561f1103 | 460 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 461 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 462 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
463 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
464 | struct net_bridge_mdb_htable *mdb, | |
465 | struct br_ip *dst); | |
466 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
467 | struct net_bridge_port *port, struct br_ip *group); | |
468 | extern void br_multicast_free_pg(struct rcu_head *head); | |
469 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
470 | struct net_bridge_port *port, | |
471 | struct br_ip *group, | |
ccb1c31a AW |
472 | struct net_bridge_port_group *next, |
473 | unsigned char state); | |
ee07c6e7 | 474 | extern void br_mdb_init(void); |
63233159 | 475 | extern void br_mdb_uninit(void); |
37a393bc CW |
476 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
477 | struct br_ip *group, int type); | |
85b35269 | 478 | |
cfd56754 CW |
479 | #define mlock_dereference(X, br) \ |
480 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
481 | ||
482 | #if IS_ENABLED(CONFIG_IPV6) | |
483 | #include <net/addrconf.h> | |
484 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
485 | { | |
486 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
487 | return 1; | |
488 | return 0; | |
489 | } | |
490 | #endif | |
491 | ||
85b35269 SS |
492 | static inline bool br_multicast_is_router(struct net_bridge *br) |
493 | { | |
494 | return br->multicast_router == 2 || | |
495 | (br->multicast_router == 1 && | |
496 | timer_pending(&br->multicast_router_timer)); | |
497 | } | |
eb1d1641 HX |
498 | #else |
499 | static inline int br_multicast_rcv(struct net_bridge *br, | |
500 | struct net_bridge_port *port, | |
501 | struct sk_buff *skb) | |
502 | { | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 507 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
508 | { |
509 | return NULL; | |
510 | } | |
511 | ||
512 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
513 | { | |
514 | } | |
515 | ||
516 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
517 | { | |
518 | } | |
519 | ||
520 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
521 | { | |
522 | } | |
523 | ||
524 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
525 | { | |
526 | } | |
527 | ||
528 | static inline void br_multicast_init(struct net_bridge *br) | |
529 | { | |
530 | } | |
531 | ||
532 | static inline void br_multicast_open(struct net_bridge *br) | |
533 | { | |
534 | } | |
535 | ||
536 | static inline void br_multicast_stop(struct net_bridge *br) | |
537 | { | |
538 | } | |
5cb5e947 HX |
539 | |
540 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
541 | struct sk_buff *skb) | |
542 | { | |
543 | } | |
544 | ||
545 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
546 | struct sk_buff *skb, | |
547 | struct sk_buff *skb2) | |
548 | { | |
549 | } | |
eb1d1641 HX |
550 | static inline bool br_multicast_is_router(struct net_bridge *br) |
551 | { | |
85b35269 | 552 | return 0; |
eb1d1641 | 553 | } |
fdb184d1 RR |
554 | static inline void br_mdb_init(void) |
555 | { | |
556 | } | |
557 | static inline void br_mdb_uninit(void) | |
558 | { | |
559 | } | |
85b35269 | 560 | #endif |
eb1d1641 | 561 | |
243a2e63 VY |
562 | /* br_vlan.c */ |
563 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 564 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 565 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
566 | extern bool br_allowed_egress(struct net_bridge *br, |
567 | const struct net_port_vlans *v, | |
568 | const struct sk_buff *skb); | |
78851988 VY |
569 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
570 | const struct net_port_vlans *v, | |
571 | struct sk_buff *skb); | |
552406c4 | 572 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
573 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
574 | extern void br_vlan_flush(struct net_bridge *br); | |
575 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 576 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
577 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
578 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 579 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
580 | |
581 | static inline struct net_port_vlans *br_get_vlan_info( | |
582 | const struct net_bridge *br) | |
583 | { | |
1690be63 | 584 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
585 | } |
586 | ||
587 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
588 | const struct net_bridge_port *p) | |
589 | { | |
1690be63 | 590 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
591 | } |
592 | ||
593 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
594 | * skb, the vlan tag will always be present if the frame was tagged. | |
595 | */ | |
596 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
597 | { | |
598 | int err = 0; | |
599 | ||
600 | if (vlan_tx_tag_present(skb)) | |
601 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
602 | else { | |
603 | *vid = 0; | |
604 | err = -EINVAL; | |
605 | } | |
606 | ||
607 | return err; | |
608 | } | |
78851988 VY |
609 | |
610 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
611 | { | |
612 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
613 | * vid wasn't set | |
614 | */ | |
615 | smp_rmb(); | |
616 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
617 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
618 | VLAN_N_VID; | |
619 | } | |
620 | ||
243a2e63 | 621 | #else |
a37b85c9 VY |
622 | static inline bool br_allowed_ingress(struct net_bridge *br, |
623 | struct net_port_vlans *v, | |
78851988 VY |
624 | struct sk_buff *skb, |
625 | u16 *vid) | |
a37b85c9 VY |
626 | { |
627 | return true; | |
628 | } | |
629 | ||
85f46c6b VY |
630 | static inline bool br_allowed_egress(struct net_bridge *br, |
631 | const struct net_port_vlans *v, | |
632 | const struct sk_buff *skb) | |
633 | { | |
634 | return true; | |
635 | } | |
636 | ||
78851988 VY |
637 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
638 | const struct net_port_vlans *v, | |
639 | struct sk_buff *skb) | |
640 | { | |
641 | return skb; | |
642 | } | |
643 | ||
552406c4 | 644 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
645 | { |
646 | return -EOPNOTSUPP; | |
647 | } | |
648 | ||
649 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
650 | { | |
651 | return -EOPNOTSUPP; | |
652 | } | |
653 | ||
654 | static inline void br_vlan_flush(struct net_bridge *br) | |
655 | { | |
656 | } | |
657 | ||
552406c4 | 658 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
659 | { |
660 | return -EOPNOTSUPP; | |
661 | } | |
662 | ||
663 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
664 | { | |
665 | return -EOPNOTSUPP; | |
666 | } | |
667 | ||
668 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
669 | { | |
670 | } | |
671 | ||
a37b85c9 VY |
672 | static inline struct net_port_vlans *br_get_vlan_info( |
673 | const struct net_bridge *br) | |
674 | { | |
675 | return NULL; | |
676 | } | |
677 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
678 | const struct net_bridge_port *p) | |
679 | { | |
680 | return NULL; | |
681 | } | |
682 | ||
bc9a25d2 VY |
683 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
684 | { | |
685 | return false; | |
686 | } | |
687 | ||
78851988 | 688 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
689 | { |
690 | return 0; | |
691 | } | |
78851988 VY |
692 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
693 | { | |
694 | return VLAN_N_VID; /* Returns invalid vid */ | |
695 | } | |
243a2e63 VY |
696 | #endif |
697 | ||
1da177e4 | 698 | /* br_netfilter.c */ |
c0909713 | 699 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
700 | extern int br_netfilter_init(void); |
701 | extern void br_netfilter_fini(void); | |
4adf0af6 | 702 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
703 | #else |
704 | #define br_netfilter_init() (0) | |
705 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 706 | #define br_netfilter_rtable_init(x) |
c0909713 | 707 | #endif |
1da177e4 LT |
708 | |
709 | /* br_stp.c */ | |
710 | extern void br_log_state(const struct net_bridge_port *p); | |
711 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 712 | u16 port_no); |
1da177e4 LT |
713 | extern void br_init_port(struct net_bridge_port *p); |
714 | extern void br_become_designated_port(struct net_bridge_port *p); | |
715 | ||
14f98f25 | 716 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
717 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
718 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
719 | ||
720 | ||
1da177e4 LT |
721 | /* br_stp_if.c */ |
722 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
723 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 724 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
725 | extern void br_stp_enable_port(struct net_bridge_port *p); |
726 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 727 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 728 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
729 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
730 | u16 newprio); | |
14f98f25 | 731 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
732 | unsigned long newprio); | |
733 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
734 | unsigned long path_cost); | |
1da177e4 LT |
735 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
736 | ||
737 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
738 | struct stp_proto; |
739 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
740 | struct net_device *dev); | |
1da177e4 LT |
741 | |
742 | /* br_stp_timer.c */ | |
743 | extern void br_stp_timer_init(struct net_bridge *br); | |
744 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
745 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
746 | ||
747 | /* br.c */ | |
e6373c4c | 748 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
749 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
750 | #endif | |
1da177e4 | 751 | |
11dc1f36 | 752 | /* br_netlink.c */ |
149ddd83 | 753 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 754 | extern int br_netlink_init(void); |
11dc1f36 SH |
755 | extern void br_netlink_fini(void); |
756 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 757 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 758 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 759 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 760 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 761 | |
1da177e4 LT |
762 | #ifdef CONFIG_SYSFS |
763 | /* br_sysfs_if.c */ | |
52cf25d0 | 764 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 765 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 766 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
767 | |
768 | /* br_sysfs_br.c */ | |
769 | extern int br_sysfs_addbr(struct net_device *dev); | |
770 | extern void br_sysfs_delbr(struct net_device *dev); | |
771 | ||
772 | #else | |
773 | ||
0cb2bbbe LJ |
774 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
775 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
776 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
777 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
778 | #endif /* CONFIG_SYSFS */ |
779 | ||
780 | #endif |