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Commit | Line | Data |
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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]; | |
6cbdceeb | 78 | u16 num_vlans; |
243a2e63 VY |
79 | }; |
80 | ||
1da177e4 LT |
81 | struct net_bridge_fdb_entry |
82 | { | |
83 | struct hlist_node hlist; | |
84 | struct net_bridge_port *dst; | |
85 | ||
86 | struct rcu_head rcu; | |
7cd8861a | 87 | unsigned long updated; |
88 | unsigned long used; | |
1da177e4 LT |
89 | mac_addr addr; |
90 | unsigned char is_local; | |
91 | unsigned char is_static; | |
2ba071ec | 92 | __u16 vlan_id; |
1da177e4 LT |
93 | }; |
94 | ||
eb1d1641 HX |
95 | struct net_bridge_port_group { |
96 | struct net_bridge_port *port; | |
e8051688 | 97 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
98 | struct hlist_node mglist; |
99 | struct rcu_head rcu; | |
100 | struct timer_list timer; | |
8ef2a9a5 | 101 | struct br_ip addr; |
ccb1c31a | 102 | unsigned char state; |
eb1d1641 HX |
103 | }; |
104 | ||
105 | struct net_bridge_mdb_entry | |
106 | { | |
107 | struct hlist_node hlist[2]; | |
eb1d1641 | 108 | struct net_bridge *br; |
e8051688 | 109 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
110 | struct rcu_head rcu; |
111 | struct timer_list timer; | |
8ef2a9a5 | 112 | struct br_ip addr; |
8a870178 | 113 | bool mglist; |
eb1d1641 HX |
114 | }; |
115 | ||
116 | struct net_bridge_mdb_htable | |
117 | { | |
118 | struct hlist_head *mhash; | |
119 | struct rcu_head rcu; | |
120 | struct net_bridge_mdb_htable *old; | |
121 | u32 size; | |
122 | u32 max; | |
123 | u32 secret; | |
124 | u32 ver; | |
125 | }; | |
126 | ||
1da177e4 LT |
127 | struct net_bridge_port |
128 | { | |
129 | struct net_bridge *br; | |
130 | struct net_device *dev; | |
131 | struct list_head list; | |
132 | ||
133 | /* STP */ | |
134 | u8 priority; | |
135 | u8 state; | |
136 | u16 port_no; | |
137 | unsigned char topology_change_ack; | |
138 | unsigned char config_pending; | |
139 | port_id port_id; | |
140 | port_id designated_port; | |
141 | bridge_id designated_root; | |
142 | bridge_id designated_bridge; | |
143 | u32 path_cost; | |
144 | u32 designated_cost; | |
0c03150e | 145 | unsigned long designated_age; |
1da177e4 LT |
146 | |
147 | struct timer_list forward_delay_timer; | |
148 | struct timer_list hold_timer; | |
149 | struct timer_list message_age_timer; | |
150 | struct kobject kobj; | |
151 | struct rcu_head rcu; | |
3982d3d2 FA |
152 | |
153 | unsigned long flags; | |
154 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 155 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 156 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 157 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
eb1d1641 HX |
158 | |
159 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
160 | u32 multicast_startup_queries_sent; | |
161 | unsigned char multicast_router; | |
162 | struct timer_list multicast_router_timer; | |
163 | struct timer_list multicast_query_timer; | |
164 | struct hlist_head mglist; | |
165 | struct hlist_node rlist; | |
166 | #endif | |
e0f43752 SA |
167 | |
168 | #ifdef CONFIG_SYSFS | |
169 | char sysfs_name[IFNAMSIZ]; | |
170 | #endif | |
91d2c34a HX |
171 | |
172 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
173 | struct netpoll *np; | |
174 | #endif | |
243a2e63 VY |
175 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
176 | struct net_port_vlans __rcu *vlan_info; | |
177 | #endif | |
1da177e4 LT |
178 | }; |
179 | ||
f350a0a8 JP |
180 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
181 | ||
b5ed54e9 | 182 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
183 | { | |
2469ffd7 JF |
184 | struct net_bridge_port *port = |
185 | rcu_dereference_rtnl(dev->rx_handler_data); | |
186 | ||
b5ed54e9 | 187 | return br_port_exists(dev) ? port : NULL; |
188 | } | |
189 | ||
ec1e5610 | 190 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 191 | { |
ec1e5610 ED |
192 | return br_port_exists(dev) ? |
193 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 194 | } |
195 | ||
0eae88f3 | 196 | struct br_cpu_netstats { |
406818ff ED |
197 | u64 rx_packets; |
198 | u64 rx_bytes; | |
199 | u64 tx_packets; | |
200 | u64 tx_bytes; | |
201 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
202 | }; |
203 | ||
1da177e4 LT |
204 | struct net_bridge |
205 | { | |
206 | spinlock_t lock; | |
207 | struct list_head port_list; | |
208 | struct net_device *dev; | |
14bb4789 | 209 | |
0eae88f3 | 210 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
211 | spinlock_t hash_lock; |
212 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
213 | #ifdef CONFIG_BRIDGE_NETFILTER |
214 | struct rtable fake_rtable; | |
4df53d8b PM |
215 | bool nf_call_iptables; |
216 | bool nf_call_ip6tables; | |
217 | bool nf_call_arptables; | |
4adf0af6 | 218 | #endif |
515853cc | 219 | u16 group_fwd_mask; |
220 | ||
1da177e4 LT |
221 | /* STP */ |
222 | bridge_id designated_root; | |
223 | bridge_id bridge_id; | |
224 | u32 root_path_cost; | |
225 | unsigned long max_age; | |
226 | unsigned long hello_time; | |
227 | unsigned long forward_delay; | |
228 | unsigned long bridge_max_age; | |
229 | unsigned long ageing_time; | |
230 | unsigned long bridge_hello_time; | |
231 | unsigned long bridge_forward_delay; | |
232 | ||
fda93d92 | 233 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 234 | u16 root_port; |
9cde0708 SH |
235 | |
236 | enum { | |
237 | BR_NO_STP, /* no spanning tree */ | |
238 | BR_KERNEL_STP, /* old STP in kernel */ | |
239 | BR_USER_STP, /* new RSTP in userspace */ | |
240 | } stp_enabled; | |
241 | ||
1da177e4 LT |
242 | unsigned char topology_change; |
243 | unsigned char topology_change_detected; | |
244 | ||
eb1d1641 HX |
245 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
246 | unsigned char multicast_router; | |
247 | ||
248 | u8 multicast_disabled:1; | |
c5c23260 | 249 | u8 multicast_querier:1; |
eb1d1641 HX |
250 | |
251 | u32 hash_elasticity; | |
252 | u32 hash_max; | |
253 | ||
254 | u32 multicast_last_member_count; | |
255 | u32 multicast_startup_queries_sent; | |
256 | u32 multicast_startup_query_count; | |
257 | ||
258 | unsigned long multicast_last_member_interval; | |
259 | unsigned long multicast_membership_interval; | |
260 | unsigned long multicast_querier_interval; | |
261 | unsigned long multicast_query_interval; | |
262 | unsigned long multicast_query_response_interval; | |
263 | unsigned long multicast_startup_query_interval; | |
264 | ||
265 | spinlock_t multicast_lock; | |
e8051688 | 266 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 267 | struct hlist_head router_list; |
eb1d1641 HX |
268 | |
269 | struct timer_list multicast_router_timer; | |
270 | struct timer_list multicast_querier_timer; | |
271 | struct timer_list multicast_query_timer; | |
272 | #endif | |
273 | ||
1da177e4 LT |
274 | struct timer_list hello_timer; |
275 | struct timer_list tcn_timer; | |
276 | struct timer_list topology_change_timer; | |
277 | struct timer_list gc_timer; | |
43b98c4a | 278 | struct kobject *ifobj; |
243a2e63 VY |
279 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
280 | u8 vlan_enabled; | |
281 | struct net_port_vlans __rcu *vlan_info; | |
282 | #endif | |
1da177e4 LT |
283 | }; |
284 | ||
68b7c895 HX |
285 | struct br_input_skb_cb { |
286 | struct net_device *brdev; | |
32dec5dd | 287 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
288 | int igmp; |
289 | int mrouters_only; | |
32dec5dd | 290 | #endif |
68b7c895 HX |
291 | }; |
292 | ||
293 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
294 | ||
32dec5dd YH |
295 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
296 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
297 | #else | |
298 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
299 | #endif | |
300 | ||
28a16c97 | 301 | #define br_printk(level, br, format, args...) \ |
302 | printk(level "%s: " format, (br)->dev->name, ##args) | |
303 | ||
304 | #define br_err(__br, format, args...) \ | |
305 | br_printk(KERN_ERR, __br, format, ##args) | |
306 | #define br_warn(__br, format, args...) \ | |
307 | br_printk(KERN_WARNING, __br, format, ##args) | |
308 | #define br_notice(__br, format, args...) \ | |
309 | br_printk(KERN_NOTICE, __br, format, ##args) | |
310 | #define br_info(__br, format, args...) \ | |
311 | br_printk(KERN_INFO, __br, format, ##args) | |
312 | ||
313 | #define br_debug(br, format, args...) \ | |
314 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
315 | ||
1da177e4 | 316 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
317 | |
318 | /* called under bridge lock */ | |
319 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
320 | { | |
321 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
322 | } | |
323 | ||
1da177e4 LT |
324 | /* br_device.c */ |
325 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 326 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
327 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
328 | struct net_device *dev); | |
cfb478da | 329 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
330 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
331 | { | |
332 | return br->dev->npinfo; | |
333 | } | |
334 | ||
335 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
336 | struct sk_buff *skb) | |
337 | { | |
338 | struct netpoll *np = p->np; | |
339 | ||
340 | if (np) | |
341 | netpoll_send_skb(np, skb); | |
342 | } | |
343 | ||
47be03a2 | 344 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 345 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 346 | #else |
91d2c34a HX |
347 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
348 | { | |
349 | return NULL; | |
350 | } | |
351 | ||
9f70b0fc | 352 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
353 | struct sk_buff *skb) |
354 | { | |
355 | } | |
cfb478da | 356 | |
47be03a2 | 357 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
358 | { |
359 | return 0; | |
360 | } | |
361 | ||
362 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
363 | { | |
364 | } | |
cfb478da | 365 | #endif |
1da177e4 LT |
366 | |
367 | /* br_fdb.c */ | |
87a596e0 | 368 | extern int br_fdb_init(void); |
1da177e4 | 369 | extern void br_fdb_fini(void); |
9cf63747 | 370 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
371 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
372 | const unsigned char *newaddr); | |
43598813 | 373 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
374 | extern void br_fdb_cleanup(unsigned long arg); |
375 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 376 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 377 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
378 | const unsigned char *addr, |
379 | __u16 vid); | |
da678292 | 380 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 381 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
382 | unsigned long count, unsigned long off); |
383 | extern int br_fdb_insert(struct net_bridge *br, | |
384 | struct net_bridge_port *source, | |
385 | const unsigned char *addr); | |
386 | extern void br_fdb_update(struct net_bridge *br, | |
387 | struct net_bridge_port *source, | |
2ba071ec VY |
388 | const unsigned char *addr, |
389 | u16 vid); | |
77162022 JF |
390 | |
391 | extern int br_fdb_delete(struct ndmsg *ndm, | |
392 | struct net_device *dev, | |
6b6e2725 | 393 | const unsigned char *addr); |
edc7d573 | 394 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 395 | struct net_device *dev, |
6b6e2725 | 396 | const unsigned char *addr, |
77162022 JF |
397 | u16 nlh_flags); |
398 | extern int br_fdb_dump(struct sk_buff *skb, | |
399 | struct netlink_callback *cb, | |
400 | struct net_device *dev, | |
401 | int idx); | |
1da177e4 LT |
402 | |
403 | /* br_forward.c */ | |
404 | extern void br_deliver(const struct net_bridge_port *to, | |
405 | struct sk_buff *skb); | |
406 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
407 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 408 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 409 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 410 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
411 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
412 | struct sk_buff *skb2); | |
1da177e4 LT |
413 | |
414 | /* br_if.c */ | |
269def7c | 415 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
416 | extern int br_add_bridge(struct net *net, const char *name); |
417 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 418 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
419 | extern int br_add_if(struct net_bridge *br, |
420 | struct net_device *dev); | |
421 | extern int br_del_if(struct net_bridge *br, | |
422 | struct net_device *dev); | |
423 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
424 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
425 | netdev_features_t features); | |
1da177e4 LT |
426 | |
427 | /* br_input.c */ | |
428 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 429 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
430 | |
431 | /* br_ioctl.c */ | |
432 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 433 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 434 | |
eb1d1641 HX |
435 | /* br_multicast.c */ |
436 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 437 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
438 | extern int br_multicast_rcv(struct net_bridge *br, |
439 | struct net_bridge_port *port, | |
440 | struct sk_buff *skb); | |
441 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
442 | struct sk_buff *skb); | |
443 | extern void br_multicast_add_port(struct net_bridge_port *port); | |
444 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
445 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
446 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
447 | extern void br_multicast_init(struct net_bridge *br); | |
448 | extern void br_multicast_open(struct net_bridge *br); | |
449 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
450 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
451 | struct sk_buff *skb); | |
452 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
453 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
454 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
455 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
456 | unsigned long val); | |
561f1103 | 457 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 458 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 459 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
460 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
461 | struct net_bridge_mdb_htable *mdb, | |
462 | struct br_ip *dst); | |
463 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
464 | struct net_bridge_port *port, struct br_ip *group); | |
465 | extern void br_multicast_free_pg(struct rcu_head *head); | |
466 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
467 | struct net_bridge_port *port, | |
468 | struct br_ip *group, | |
ccb1c31a AW |
469 | struct net_bridge_port_group *next, |
470 | unsigned char state); | |
ee07c6e7 | 471 | extern void br_mdb_init(void); |
63233159 | 472 | extern void br_mdb_uninit(void); |
37a393bc CW |
473 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
474 | struct br_ip *group, int type); | |
85b35269 | 475 | |
cfd56754 CW |
476 | #define mlock_dereference(X, br) \ |
477 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
478 | ||
479 | #if IS_ENABLED(CONFIG_IPV6) | |
480 | #include <net/addrconf.h> | |
481 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
482 | { | |
483 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
484 | return 1; | |
485 | return 0; | |
486 | } | |
487 | #endif | |
488 | ||
85b35269 SS |
489 | static inline bool br_multicast_is_router(struct net_bridge *br) |
490 | { | |
491 | return br->multicast_router == 2 || | |
492 | (br->multicast_router == 1 && | |
493 | timer_pending(&br->multicast_router_timer)); | |
494 | } | |
eb1d1641 HX |
495 | #else |
496 | static inline int br_multicast_rcv(struct net_bridge *br, | |
497 | struct net_bridge_port *port, | |
498 | struct sk_buff *skb) | |
499 | { | |
500 | return 0; | |
501 | } | |
502 | ||
503 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
504 | struct sk_buff *skb) | |
505 | { | |
506 | return NULL; | |
507 | } | |
508 | ||
509 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
510 | { | |
511 | } | |
512 | ||
513 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
514 | { | |
515 | } | |
516 | ||
517 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
518 | { | |
519 | } | |
520 | ||
521 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
522 | { | |
523 | } | |
524 | ||
525 | static inline void br_multicast_init(struct net_bridge *br) | |
526 | { | |
527 | } | |
528 | ||
529 | static inline void br_multicast_open(struct net_bridge *br) | |
530 | { | |
531 | } | |
532 | ||
533 | static inline void br_multicast_stop(struct net_bridge *br) | |
534 | { | |
535 | } | |
5cb5e947 HX |
536 | |
537 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
538 | struct sk_buff *skb) | |
539 | { | |
540 | } | |
541 | ||
542 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
543 | struct sk_buff *skb, | |
544 | struct sk_buff *skb2) | |
545 | { | |
546 | } | |
eb1d1641 HX |
547 | static inline bool br_multicast_is_router(struct net_bridge *br) |
548 | { | |
85b35269 | 549 | return 0; |
eb1d1641 | 550 | } |
fdb184d1 RR |
551 | static inline void br_mdb_init(void) |
552 | { | |
553 | } | |
554 | static inline void br_mdb_uninit(void) | |
555 | { | |
556 | } | |
85b35269 | 557 | #endif |
eb1d1641 | 558 | |
243a2e63 VY |
559 | /* br_vlan.c */ |
560 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 561 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 562 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
563 | extern bool br_allowed_egress(struct net_bridge *br, |
564 | const struct net_port_vlans *v, | |
565 | const struct sk_buff *skb); | |
78851988 VY |
566 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
567 | const struct net_port_vlans *v, | |
568 | struct sk_buff *skb); | |
552406c4 | 569 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
570 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
571 | extern void br_vlan_flush(struct net_bridge *br); | |
572 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 573 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
574 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
575 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
a37b85c9 VY |
576 | |
577 | static inline struct net_port_vlans *br_get_vlan_info( | |
578 | const struct net_bridge *br) | |
579 | { | |
580 | return rcu_dereference(br->vlan_info); | |
581 | } | |
582 | ||
583 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
584 | const struct net_bridge_port *p) | |
585 | { | |
586 | return rcu_dereference(p->vlan_info); | |
587 | } | |
588 | ||
589 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
590 | * skb, the vlan tag will always be present if the frame was tagged. | |
591 | */ | |
592 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
593 | { | |
594 | int err = 0; | |
595 | ||
596 | if (vlan_tx_tag_present(skb)) | |
597 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
598 | else { | |
599 | *vid = 0; | |
600 | err = -EINVAL; | |
601 | } | |
602 | ||
603 | return err; | |
604 | } | |
78851988 VY |
605 | |
606 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
607 | { | |
608 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
609 | * vid wasn't set | |
610 | */ | |
611 | smp_rmb(); | |
612 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
613 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
614 | VLAN_N_VID; | |
615 | } | |
616 | ||
243a2e63 | 617 | #else |
a37b85c9 VY |
618 | static inline bool br_allowed_ingress(struct net_bridge *br, |
619 | struct net_port_vlans *v, | |
78851988 VY |
620 | struct sk_buff *skb, |
621 | u16 *vid) | |
a37b85c9 VY |
622 | { |
623 | return true; | |
624 | } | |
625 | ||
85f46c6b VY |
626 | static inline bool br_allowed_egress(struct net_bridge *br, |
627 | const struct net_port_vlans *v, | |
628 | const struct sk_buff *skb) | |
629 | { | |
630 | return true; | |
631 | } | |
632 | ||
78851988 VY |
633 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
634 | const struct net_port_vlans *v, | |
635 | struct sk_buff *skb) | |
636 | { | |
637 | return skb; | |
638 | } | |
639 | ||
552406c4 | 640 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
641 | { |
642 | return -EOPNOTSUPP; | |
643 | } | |
644 | ||
645 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
646 | { | |
647 | return -EOPNOTSUPP; | |
648 | } | |
649 | ||
650 | static inline void br_vlan_flush(struct net_bridge *br) | |
651 | { | |
652 | } | |
653 | ||
552406c4 | 654 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
655 | { |
656 | return -EOPNOTSUPP; | |
657 | } | |
658 | ||
659 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
660 | { | |
661 | return -EOPNOTSUPP; | |
662 | } | |
663 | ||
664 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
665 | { | |
666 | } | |
667 | ||
a37b85c9 VY |
668 | static inline struct net_port_vlans *br_get_vlan_info( |
669 | const struct net_bridge *br) | |
670 | { | |
671 | return NULL; | |
672 | } | |
673 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
674 | const struct net_bridge_port *p) | |
675 | { | |
676 | return NULL; | |
677 | } | |
678 | ||
78851988 | 679 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
680 | { |
681 | return 0; | |
682 | } | |
78851988 VY |
683 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
684 | { | |
685 | return VLAN_N_VID; /* Returns invalid vid */ | |
686 | } | |
243a2e63 VY |
687 | #endif |
688 | ||
1da177e4 | 689 | /* br_netfilter.c */ |
c0909713 | 690 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
691 | extern int br_netfilter_init(void); |
692 | extern void br_netfilter_fini(void); | |
4adf0af6 | 693 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
694 | #else |
695 | #define br_netfilter_init() (0) | |
696 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 697 | #define br_netfilter_rtable_init(x) |
c0909713 | 698 | #endif |
1da177e4 LT |
699 | |
700 | /* br_stp.c */ | |
701 | extern void br_log_state(const struct net_bridge_port *p); | |
702 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 703 | u16 port_no); |
1da177e4 LT |
704 | extern void br_init_port(struct net_bridge_port *p); |
705 | extern void br_become_designated_port(struct net_bridge_port *p); | |
706 | ||
14f98f25 | 707 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
708 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
709 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
710 | ||
711 | ||
1da177e4 LT |
712 | /* br_stp_if.c */ |
713 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
714 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 715 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
716 | extern void br_stp_enable_port(struct net_bridge_port *p); |
717 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 718 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 719 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
720 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
721 | u16 newprio); | |
14f98f25 | 722 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
723 | unsigned long newprio); | |
724 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
725 | unsigned long path_cost); | |
1da177e4 LT |
726 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
727 | ||
728 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
729 | struct stp_proto; |
730 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
731 | struct net_device *dev); | |
1da177e4 LT |
732 | |
733 | /* br_stp_timer.c */ | |
734 | extern void br_stp_timer_init(struct net_bridge *br); | |
735 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
736 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
737 | ||
738 | /* br.c */ | |
e6373c4c | 739 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
740 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
741 | #endif | |
1da177e4 | 742 | |
11dc1f36 | 743 | /* br_netlink.c */ |
149ddd83 | 744 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 745 | extern int br_netlink_init(void); |
11dc1f36 SH |
746 | extern void br_netlink_fini(void); |
747 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 748 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 749 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 750 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 751 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 752 | |
1da177e4 LT |
753 | #ifdef CONFIG_SYSFS |
754 | /* br_sysfs_if.c */ | |
52cf25d0 | 755 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 756 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 757 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
758 | |
759 | /* br_sysfs_br.c */ | |
760 | extern int br_sysfs_addbr(struct net_device *dev); | |
761 | extern void br_sysfs_delbr(struct net_device *dev); | |
762 | ||
763 | #else | |
764 | ||
0cb2bbbe LJ |
765 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
766 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
767 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
768 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
769 | #endif /* CONFIG_SYSFS */ |
770 | ||
771 | #endif |