Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef _BR_PRIVATE_H | |
14 | #define _BR_PRIVATE_H | |
15 | ||
16 | #include <linux/netdevice.h> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
91d2c34a | 18 | #include <linux/netpoll.h> |
406818ff | 19 | #include <linux/u64_stats_sync.h> |
4adf0af6 | 20 | #include <net/route.h> |
243a2e63 | 21 | #include <linux/if_vlan.h> |
1da177e4 LT |
22 | |
23 | #define BR_HASH_BITS 8 | |
24 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
25 | ||
26 | #define BR_HOLD_TIME (1*HZ) | |
27 | ||
28 | #define BR_PORT_BITS 10 | |
29 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
243a2e63 | 30 | #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) |
1da177e4 | 31 | |
9cde0708 SH |
32 | #define BR_VERSION "2.3" |
33 | ||
515853cc | 34 | /* Control of forwarding link local multicast */ |
35 | #define BR_GROUPFWD_DEFAULT 0 | |
36 | /* Don't allow forwarding control protocols like STP and LLDP */ | |
37 | #define BR_GROUPFWD_RESTRICTED 0x4007u | |
38 | ||
9cde0708 SH |
39 | /* Path to usermode spanning tree program */ |
40 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 41 | |
1da177e4 LT |
42 | typedef struct bridge_id bridge_id; |
43 | typedef struct mac_addr mac_addr; | |
44 | typedef __u16 port_id; | |
45 | ||
46 | struct bridge_id | |
47 | { | |
48 | unsigned char prio[2]; | |
49 | unsigned char addr[6]; | |
50 | }; | |
51 | ||
52 | struct mac_addr | |
53 | { | |
54 | unsigned char addr[6]; | |
55 | }; | |
56 | ||
8ef2a9a5 YH |
57 | struct br_ip |
58 | { | |
59 | union { | |
60 | __be32 ip4; | |
dfd56b8b | 61 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
62 | struct in6_addr ip6; |
63 | #endif | |
8ef2a9a5 YH |
64 | } u; |
65 | __be16 proto; | |
b0e9a30d | 66 | __u16 vid; |
8ef2a9a5 YH |
67 | }; |
68 | ||
243a2e63 VY |
69 | struct net_port_vlans { |
70 | u16 port_idx; | |
78851988 | 71 | u16 pvid; |
243a2e63 VY |
72 | union { |
73 | struct net_bridge_port *port; | |
74 | struct net_bridge *br; | |
75 | } parent; | |
76 | struct rcu_head rcu; | |
77 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 78 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 79 | u16 num_vlans; |
243a2e63 VY |
80 | }; |
81 | ||
1da177e4 LT |
82 | struct net_bridge_fdb_entry |
83 | { | |
84 | struct hlist_node hlist; | |
85 | struct net_bridge_port *dst; | |
86 | ||
87 | struct rcu_head rcu; | |
7cd8861a | 88 | unsigned long updated; |
89 | unsigned long used; | |
1da177e4 LT |
90 | mac_addr addr; |
91 | unsigned char is_local; | |
92 | unsigned char is_static; | |
2ba071ec | 93 | __u16 vlan_id; |
1da177e4 LT |
94 | }; |
95 | ||
eb1d1641 HX |
96 | struct net_bridge_port_group { |
97 | struct net_bridge_port *port; | |
e8051688 | 98 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
99 | struct hlist_node mglist; |
100 | struct rcu_head rcu; | |
101 | struct timer_list timer; | |
8ef2a9a5 | 102 | struct br_ip addr; |
ccb1c31a | 103 | unsigned char state; |
eb1d1641 HX |
104 | }; |
105 | ||
106 | struct net_bridge_mdb_entry | |
107 | { | |
108 | struct hlist_node hlist[2]; | |
eb1d1641 | 109 | struct net_bridge *br; |
e8051688 | 110 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
111 | struct rcu_head rcu; |
112 | struct timer_list timer; | |
8ef2a9a5 | 113 | struct br_ip addr; |
8a870178 | 114 | bool mglist; |
9f00b2e7 | 115 | bool timer_armed; |
eb1d1641 HX |
116 | }; |
117 | ||
118 | struct net_bridge_mdb_htable | |
119 | { | |
120 | struct hlist_head *mhash; | |
121 | struct rcu_head rcu; | |
122 | struct net_bridge_mdb_htable *old; | |
123 | u32 size; | |
124 | u32 max; | |
125 | u32 secret; | |
126 | u32 ver; | |
127 | }; | |
128 | ||
1da177e4 LT |
129 | struct net_bridge_port |
130 | { | |
131 | struct net_bridge *br; | |
132 | struct net_device *dev; | |
133 | struct list_head list; | |
134 | ||
135 | /* STP */ | |
136 | u8 priority; | |
137 | u8 state; | |
138 | u16 port_no; | |
139 | unsigned char topology_change_ack; | |
140 | unsigned char config_pending; | |
141 | port_id port_id; | |
142 | port_id designated_port; | |
143 | bridge_id designated_root; | |
144 | bridge_id designated_bridge; | |
145 | u32 path_cost; | |
146 | u32 designated_cost; | |
0c03150e | 147 | unsigned long designated_age; |
1da177e4 LT |
148 | |
149 | struct timer_list forward_delay_timer; | |
150 | struct timer_list hold_timer; | |
151 | struct timer_list message_age_timer; | |
152 | struct kobject kobj; | |
153 | struct rcu_head rcu; | |
3982d3d2 FA |
154 | |
155 | unsigned long flags; | |
156 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 157 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 158 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 159 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 160 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 161 | #define BR_LEARNING 0x00000020 |
867a5943 | 162 | #define BR_FLOOD 0x00000040 |
eb1d1641 HX |
163 | |
164 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
165 | u32 multicast_startup_queries_sent; | |
166 | unsigned char multicast_router; | |
167 | struct timer_list multicast_router_timer; | |
168 | struct timer_list multicast_query_timer; | |
169 | struct hlist_head mglist; | |
170 | struct hlist_node rlist; | |
171 | #endif | |
e0f43752 SA |
172 | |
173 | #ifdef CONFIG_SYSFS | |
174 | char sysfs_name[IFNAMSIZ]; | |
175 | #endif | |
91d2c34a HX |
176 | |
177 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
178 | struct netpoll *np; | |
179 | #endif | |
243a2e63 VY |
180 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
181 | struct net_port_vlans __rcu *vlan_info; | |
182 | #endif | |
1da177e4 LT |
183 | }; |
184 | ||
f350a0a8 JP |
185 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
186 | ||
b5ed54e9 | 187 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
188 | { | |
2469ffd7 JF |
189 | struct net_bridge_port *port = |
190 | rcu_dereference_rtnl(dev->rx_handler_data); | |
191 | ||
b5ed54e9 | 192 | return br_port_exists(dev) ? port : NULL; |
193 | } | |
194 | ||
ec1e5610 | 195 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 196 | { |
ec1e5610 ED |
197 | return br_port_exists(dev) ? |
198 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 199 | } |
200 | ||
0eae88f3 | 201 | struct br_cpu_netstats { |
406818ff ED |
202 | u64 rx_packets; |
203 | u64 rx_bytes; | |
204 | u64 tx_packets; | |
205 | u64 tx_bytes; | |
206 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
207 | }; |
208 | ||
1da177e4 LT |
209 | struct net_bridge |
210 | { | |
211 | spinlock_t lock; | |
212 | struct list_head port_list; | |
213 | struct net_device *dev; | |
14bb4789 | 214 | |
0eae88f3 | 215 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
216 | spinlock_t hash_lock; |
217 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
218 | #ifdef CONFIG_BRIDGE_NETFILTER |
219 | struct rtable fake_rtable; | |
4df53d8b PM |
220 | bool nf_call_iptables; |
221 | bool nf_call_ip6tables; | |
222 | bool nf_call_arptables; | |
4adf0af6 | 223 | #endif |
515853cc | 224 | u16 group_fwd_mask; |
225 | ||
1da177e4 LT |
226 | /* STP */ |
227 | bridge_id designated_root; | |
228 | bridge_id bridge_id; | |
229 | u32 root_path_cost; | |
230 | unsigned long max_age; | |
231 | unsigned long hello_time; | |
232 | unsigned long forward_delay; | |
233 | unsigned long bridge_max_age; | |
234 | unsigned long ageing_time; | |
235 | unsigned long bridge_hello_time; | |
236 | unsigned long bridge_forward_delay; | |
237 | ||
fda93d92 | 238 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 239 | u16 root_port; |
9cde0708 SH |
240 | |
241 | enum { | |
242 | BR_NO_STP, /* no spanning tree */ | |
243 | BR_KERNEL_STP, /* old STP in kernel */ | |
244 | BR_USER_STP, /* new RSTP in userspace */ | |
245 | } stp_enabled; | |
246 | ||
1da177e4 LT |
247 | unsigned char topology_change; |
248 | unsigned char topology_change_detected; | |
249 | ||
eb1d1641 HX |
250 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
251 | unsigned char multicast_router; | |
252 | ||
253 | u8 multicast_disabled:1; | |
c5c23260 | 254 | u8 multicast_querier:1; |
1c8ad5bf | 255 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
256 | |
257 | u32 hash_elasticity; | |
258 | u32 hash_max; | |
259 | ||
260 | u32 multicast_last_member_count; | |
261 | u32 multicast_startup_queries_sent; | |
262 | u32 multicast_startup_query_count; | |
263 | ||
264 | unsigned long multicast_last_member_interval; | |
265 | unsigned long multicast_membership_interval; | |
266 | unsigned long multicast_querier_interval; | |
267 | unsigned long multicast_query_interval; | |
268 | unsigned long multicast_query_response_interval; | |
269 | unsigned long multicast_startup_query_interval; | |
270 | ||
271 | spinlock_t multicast_lock; | |
e8051688 | 272 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 273 | struct hlist_head router_list; |
eb1d1641 HX |
274 | |
275 | struct timer_list multicast_router_timer; | |
276 | struct timer_list multicast_querier_timer; | |
277 | struct timer_list multicast_query_timer; | |
278 | #endif | |
279 | ||
1da177e4 LT |
280 | struct timer_list hello_timer; |
281 | struct timer_list tcn_timer; | |
282 | struct timer_list topology_change_timer; | |
283 | struct timer_list gc_timer; | |
43b98c4a | 284 | struct kobject *ifobj; |
243a2e63 VY |
285 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
286 | u8 vlan_enabled; | |
287 | struct net_port_vlans __rcu *vlan_info; | |
288 | #endif | |
1da177e4 LT |
289 | }; |
290 | ||
68b7c895 HX |
291 | struct br_input_skb_cb { |
292 | struct net_device *brdev; | |
32dec5dd | 293 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
294 | int igmp; |
295 | int mrouters_only; | |
32dec5dd | 296 | #endif |
68b7c895 HX |
297 | }; |
298 | ||
299 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
300 | ||
32dec5dd YH |
301 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
302 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
303 | #else | |
304 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
305 | #endif | |
306 | ||
28a16c97 | 307 | #define br_printk(level, br, format, args...) \ |
308 | printk(level "%s: " format, (br)->dev->name, ##args) | |
309 | ||
310 | #define br_err(__br, format, args...) \ | |
311 | br_printk(KERN_ERR, __br, format, ##args) | |
312 | #define br_warn(__br, format, args...) \ | |
313 | br_printk(KERN_WARNING, __br, format, ##args) | |
314 | #define br_notice(__br, format, args...) \ | |
315 | br_printk(KERN_NOTICE, __br, format, ##args) | |
316 | #define br_info(__br, format, args...) \ | |
317 | br_printk(KERN_INFO, __br, format, ##args) | |
318 | ||
319 | #define br_debug(br, format, args...) \ | |
320 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
321 | ||
1da177e4 | 322 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
323 | |
324 | /* called under bridge lock */ | |
325 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
326 | { | |
327 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
328 | } | |
329 | ||
1da177e4 LT |
330 | /* br_device.c */ |
331 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 332 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
333 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
334 | struct net_device *dev); | |
cfb478da | 335 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
336 | static inline 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 |
9f70b0fc | 348 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
349 | struct sk_buff *skb) |
350 | { | |
351 | } | |
cfb478da | 352 | |
47be03a2 | 353 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
354 | { |
355 | return 0; | |
356 | } | |
357 | ||
358 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
359 | { | |
360 | } | |
cfb478da | 361 | #endif |
1da177e4 LT |
362 | |
363 | /* br_fdb.c */ | |
87a596e0 | 364 | extern int br_fdb_init(void); |
1da177e4 | 365 | extern void br_fdb_fini(void); |
9cf63747 | 366 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
367 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
368 | const unsigned char *newaddr); | |
43598813 | 369 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
370 | extern void br_fdb_cleanup(unsigned long arg); |
371 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 372 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 373 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
374 | const unsigned char *addr, |
375 | __u16 vid); | |
da678292 | 376 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 377 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
378 | unsigned long count, unsigned long off); |
379 | extern int br_fdb_insert(struct net_bridge *br, | |
380 | struct net_bridge_port *source, | |
bc9a25d2 VY |
381 | const unsigned char *addr, |
382 | u16 vid); | |
1da177e4 LT |
383 | extern void br_fdb_update(struct net_bridge *br, |
384 | struct net_bridge_port *source, | |
2ba071ec VY |
385 | const unsigned char *addr, |
386 | u16 vid); | |
bc9a25d2 | 387 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 388 | |
1690be63 | 389 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 390 | struct net_device *dev, |
6b6e2725 | 391 | const unsigned char *addr); |
edc7d573 | 392 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 393 | struct net_device *dev, |
6b6e2725 | 394 | const unsigned char *addr, |
77162022 JF |
395 | u16 nlh_flags); |
396 | extern int br_fdb_dump(struct sk_buff *skb, | |
397 | struct netlink_callback *cb, | |
398 | struct net_device *dev, | |
399 | int idx); | |
1da177e4 LT |
400 | |
401 | /* br_forward.c */ | |
402 | extern void br_deliver(const struct net_bridge_port *to, | |
403 | struct sk_buff *skb); | |
404 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
405 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 406 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 407 | extern int br_forward_finish(struct sk_buff *skb); |
867a5943 VY |
408 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, |
409 | bool unicast); | |
b33084be | 410 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
867a5943 | 411 | struct sk_buff *skb2, bool unicast); |
1da177e4 LT |
412 | |
413 | /* br_if.c */ | |
269def7c | 414 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
415 | extern int br_add_bridge(struct net *net, const char *name); |
416 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 417 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
418 | extern int br_add_if(struct net_bridge *br, |
419 | struct net_device *dev); | |
420 | extern int br_del_if(struct net_bridge *br, | |
421 | struct net_device *dev); | |
422 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
423 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
424 | netdev_features_t features); | |
1da177e4 LT |
425 | |
426 | /* br_input.c */ | |
427 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 428 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
429 | |
430 | /* br_ioctl.c */ | |
431 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 432 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 433 | |
eb1d1641 HX |
434 | /* br_multicast.c */ |
435 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 436 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
437 | extern int br_multicast_rcv(struct net_bridge *br, |
438 | struct net_bridge_port *port, | |
439 | struct sk_buff *skb); | |
440 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 441 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
442 | extern void br_multicast_add_port(struct net_bridge_port *port); |
443 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
444 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
445 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
446 | extern void br_multicast_init(struct net_bridge *br); | |
447 | extern void br_multicast_open(struct net_bridge *br); | |
448 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
449 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
450 | struct sk_buff *skb); | |
451 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
452 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
453 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
454 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
455 | unsigned long val); | |
561f1103 | 456 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 457 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 458 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
459 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
460 | struct net_bridge_mdb_htable *mdb, | |
461 | struct br_ip *dst); | |
462 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
463 | struct net_bridge_port *port, struct br_ip *group); | |
464 | extern void br_multicast_free_pg(struct rcu_head *head); | |
465 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
466 | struct net_bridge_port *port, | |
467 | struct br_ip *group, | |
ccb1c31a AW |
468 | struct net_bridge_port_group *next, |
469 | unsigned char state); | |
ee07c6e7 | 470 | extern void br_mdb_init(void); |
63233159 | 471 | extern void br_mdb_uninit(void); |
37a393bc CW |
472 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
473 | struct br_ip *group, int type); | |
85b35269 | 474 | |
cfd56754 CW |
475 | #define mlock_dereference(X, br) \ |
476 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
477 | ||
478 | #if IS_ENABLED(CONFIG_IPV6) | |
479 | #include <net/addrconf.h> | |
480 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
481 | { | |
482 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
483 | return 1; | |
484 | return 0; | |
485 | } | |
486 | #endif | |
487 | ||
85b35269 SS |
488 | static inline bool br_multicast_is_router(struct net_bridge *br) |
489 | { | |
490 | return br->multicast_router == 2 || | |
491 | (br->multicast_router == 1 && | |
492 | timer_pending(&br->multicast_router_timer)); | |
493 | } | |
eb1d1641 HX |
494 | #else |
495 | static inline int br_multicast_rcv(struct net_bridge *br, | |
496 | struct net_bridge_port *port, | |
497 | struct sk_buff *skb) | |
498 | { | |
499 | return 0; | |
500 | } | |
501 | ||
502 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 503 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
504 | { |
505 | return NULL; | |
506 | } | |
507 | ||
508 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
509 | { | |
510 | } | |
511 | ||
512 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
513 | { | |
514 | } | |
515 | ||
516 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
517 | { | |
518 | } | |
519 | ||
520 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
521 | { | |
522 | } | |
523 | ||
524 | static inline void br_multicast_init(struct net_bridge *br) | |
525 | { | |
526 | } | |
527 | ||
528 | static inline void br_multicast_open(struct net_bridge *br) | |
529 | { | |
530 | } | |
531 | ||
532 | static inline void br_multicast_stop(struct net_bridge *br) | |
533 | { | |
534 | } | |
5cb5e947 HX |
535 | |
536 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
537 | struct sk_buff *skb) | |
538 | { | |
539 | } | |
540 | ||
541 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
542 | struct sk_buff *skb, | |
543 | struct sk_buff *skb2) | |
544 | { | |
545 | } | |
eb1d1641 HX |
546 | static inline bool br_multicast_is_router(struct net_bridge *br) |
547 | { | |
85b35269 | 548 | return 0; |
eb1d1641 | 549 | } |
fdb184d1 RR |
550 | static inline void br_mdb_init(void) |
551 | { | |
552 | } | |
553 | static inline void br_mdb_uninit(void) | |
554 | { | |
555 | } | |
85b35269 | 556 | #endif |
eb1d1641 | 557 | |
243a2e63 VY |
558 | /* br_vlan.c */ |
559 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 560 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 561 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
562 | extern bool br_allowed_egress(struct net_bridge *br, |
563 | const struct net_port_vlans *v, | |
564 | const struct sk_buff *skb); | |
78851988 VY |
565 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
566 | const struct net_port_vlans *v, | |
567 | struct sk_buff *skb); | |
552406c4 | 568 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
569 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
570 | extern void br_vlan_flush(struct net_bridge *br); | |
571 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 572 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
573 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
574 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 575 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
576 | |
577 | static inline struct net_port_vlans *br_get_vlan_info( | |
578 | const struct net_bridge *br) | |
579 | { | |
1690be63 | 580 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
581 | } |
582 | ||
583 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
584 | const struct net_bridge_port *p) | |
585 | { | |
1690be63 | 586 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
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 | ||
bc9a25d2 VY |
679 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
680 | { | |
681 | return false; | |
682 | } | |
683 | ||
78851988 | 684 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
685 | { |
686 | return 0; | |
687 | } | |
78851988 VY |
688 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
689 | { | |
690 | return VLAN_N_VID; /* Returns invalid vid */ | |
691 | } | |
243a2e63 VY |
692 | #endif |
693 | ||
1da177e4 | 694 | /* br_netfilter.c */ |
c0909713 | 695 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
696 | extern int br_netfilter_init(void); |
697 | extern void br_netfilter_fini(void); | |
4adf0af6 | 698 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
699 | #else |
700 | #define br_netfilter_init() (0) | |
701 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 702 | #define br_netfilter_rtable_init(x) |
c0909713 | 703 | #endif |
1da177e4 LT |
704 | |
705 | /* br_stp.c */ | |
706 | extern void br_log_state(const struct net_bridge_port *p); | |
707 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 708 | u16 port_no); |
1da177e4 LT |
709 | extern void br_init_port(struct net_bridge_port *p); |
710 | extern void br_become_designated_port(struct net_bridge_port *p); | |
711 | ||
14f98f25 | 712 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
713 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
714 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
715 | ||
716 | ||
1da177e4 LT |
717 | /* br_stp_if.c */ |
718 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
719 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 720 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
721 | extern void br_stp_enable_port(struct net_bridge_port *p); |
722 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 723 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 724 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
725 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
726 | u16 newprio); | |
14f98f25 | 727 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
728 | unsigned long newprio); | |
729 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
730 | unsigned long path_cost); | |
1da177e4 LT |
731 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
732 | ||
733 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
734 | struct stp_proto; |
735 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
736 | struct net_device *dev); | |
1da177e4 LT |
737 | |
738 | /* br_stp_timer.c */ | |
739 | extern void br_stp_timer_init(struct net_bridge *br); | |
740 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
741 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
742 | ||
743 | /* br.c */ | |
e6373c4c | 744 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
745 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
746 | #endif | |
1da177e4 | 747 | |
11dc1f36 | 748 | /* br_netlink.c */ |
149ddd83 | 749 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 750 | extern int br_netlink_init(void); |
11dc1f36 SH |
751 | extern void br_netlink_fini(void); |
752 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 753 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 754 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 755 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 756 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 757 | |
1da177e4 LT |
758 | #ifdef CONFIG_SYSFS |
759 | /* br_sysfs_if.c */ | |
52cf25d0 | 760 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 761 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 762 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
763 | |
764 | /* br_sysfs_br.c */ | |
765 | extern int br_sysfs_addbr(struct net_device *dev); | |
766 | extern void br_sysfs_delbr(struct net_device *dev); | |
767 | ||
768 | #else | |
769 | ||
0cb2bbbe LJ |
770 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
771 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
772 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
773 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
774 | #endif /* CONFIG_SYSFS */ |
775 | ||
776 | #endif |