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 | |
f2808d22 TM |
38 | /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ |
39 | #define BR_GROUPFWD_8021AD 0xB801u | |
515853cc | 40 | |
9cde0708 SH |
41 | /* Path to usermode spanning tree program */ |
42 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 43 | |
1da177e4 LT |
44 | typedef struct bridge_id bridge_id; |
45 | typedef struct mac_addr mac_addr; | |
46 | typedef __u16 port_id; | |
47 | ||
48 | struct bridge_id | |
49 | { | |
50 | unsigned char prio[2]; | |
e5a727f6 | 51 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
52 | }; |
53 | ||
54 | struct mac_addr | |
55 | { | |
e5a727f6 | 56 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
57 | }; |
58 | ||
cc0fdd80 LL |
59 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
60 | /* our own querier */ | |
90010b36 | 61 | struct bridge_mcast_own_query { |
cc0fdd80 LL |
62 | struct timer_list timer; |
63 | u32 startup_sent; | |
64 | }; | |
65 | ||
66 | /* other querier */ | |
90010b36 | 67 | struct bridge_mcast_other_query { |
cc0fdd80 LL |
68 | struct timer_list timer; |
69 | unsigned long delay_time; | |
70 | }; | |
dc4eb53a LL |
71 | |
72 | /* selected querier */ | |
73 | struct bridge_mcast_querier { | |
74 | struct br_ip addr; | |
2cd41431 | 75 | struct net_bridge_port __rcu *port; |
dc4eb53a | 76 | }; |
cc0fdd80 LL |
77 | #endif |
78 | ||
243a2e63 VY |
79 | struct net_port_vlans { |
80 | u16 port_idx; | |
78851988 | 81 | u16 pvid; |
243a2e63 VY |
82 | union { |
83 | struct net_bridge_port *port; | |
84 | struct net_bridge *br; | |
85 | } parent; | |
86 | struct rcu_head rcu; | |
87 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 88 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 89 | u16 num_vlans; |
243a2e63 VY |
90 | }; |
91 | ||
1da177e4 LT |
92 | struct net_bridge_fdb_entry |
93 | { | |
94 | struct hlist_node hlist; | |
95 | struct net_bridge_port *dst; | |
96 | ||
97 | struct rcu_head rcu; | |
7cd8861a | 98 | unsigned long updated; |
99 | unsigned long used; | |
1da177e4 | 100 | mac_addr addr; |
93859b13 JP |
101 | unsigned char is_local:1, |
102 | is_static:1, | |
cf6b8e1e SF |
103 | added_by_user:1, |
104 | added_by_external_learn:1; | |
2ba071ec | 105 | __u16 vlan_id; |
1da177e4 LT |
106 | }; |
107 | ||
eb1d1641 HX |
108 | struct net_bridge_port_group { |
109 | struct net_bridge_port *port; | |
e8051688 | 110 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
111 | struct hlist_node mglist; |
112 | struct rcu_head rcu; | |
113 | struct timer_list timer; | |
8ef2a9a5 | 114 | struct br_ip addr; |
ccb1c31a | 115 | unsigned char state; |
eb1d1641 HX |
116 | }; |
117 | ||
118 | struct net_bridge_mdb_entry | |
119 | { | |
120 | struct hlist_node hlist[2]; | |
eb1d1641 | 121 | struct net_bridge *br; |
e8051688 | 122 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
123 | struct rcu_head rcu; |
124 | struct timer_list timer; | |
8ef2a9a5 | 125 | struct br_ip addr; |
8a870178 | 126 | bool mglist; |
eb1d1641 HX |
127 | }; |
128 | ||
129 | struct net_bridge_mdb_htable | |
130 | { | |
131 | struct hlist_head *mhash; | |
132 | struct rcu_head rcu; | |
133 | struct net_bridge_mdb_htable *old; | |
134 | u32 size; | |
135 | u32 max; | |
136 | u32 secret; | |
137 | u32 ver; | |
138 | }; | |
139 | ||
1da177e4 LT |
140 | struct net_bridge_port |
141 | { | |
142 | struct net_bridge *br; | |
143 | struct net_device *dev; | |
144 | struct list_head list; | |
145 | ||
146 | /* STP */ | |
147 | u8 priority; | |
148 | u8 state; | |
149 | u16 port_no; | |
150 | unsigned char topology_change_ack; | |
151 | unsigned char config_pending; | |
152 | port_id port_id; | |
153 | port_id designated_port; | |
154 | bridge_id designated_root; | |
155 | bridge_id designated_bridge; | |
156 | u32 path_cost; | |
157 | u32 designated_cost; | |
0c03150e | 158 | unsigned long designated_age; |
1da177e4 LT |
159 | |
160 | struct timer_list forward_delay_timer; | |
161 | struct timer_list hold_timer; | |
162 | struct timer_list message_age_timer; | |
163 | struct kobject kobj; | |
164 | struct rcu_head rcu; | |
3982d3d2 FA |
165 | |
166 | unsigned long flags; | |
eb1d1641 HX |
167 | |
168 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
90010b36 | 169 | struct bridge_mcast_own_query ip4_own_query; |
cc0fdd80 | 170 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 171 | struct bridge_mcast_own_query ip6_own_query; |
cc0fdd80 | 172 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
173 | unsigned char multicast_router; |
174 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
175 | struct hlist_head mglist; |
176 | struct hlist_node rlist; | |
177 | #endif | |
e0f43752 SA |
178 | |
179 | #ifdef CONFIG_SYSFS | |
180 | char sysfs_name[IFNAMSIZ]; | |
181 | #endif | |
91d2c34a HX |
182 | |
183 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
184 | struct netpoll *np; | |
185 | #endif | |
243a2e63 VY |
186 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
187 | struct net_port_vlans __rcu *vlan_info; | |
188 | #endif | |
1da177e4 LT |
189 | }; |
190 | ||
e028e4b8 | 191 | #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
f3a6ddf1 | 192 | #define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
e028e4b8 | 193 | |
f350a0a8 JP |
194 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
195 | ||
b5ed54e9 | 196 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
197 | { | |
716ec052 | 198 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 199 | } |
200 | ||
1fb1754a | 201 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 202 | { |
ec1e5610 ED |
203 | return br_port_exists(dev) ? |
204 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 205 | } |
206 | ||
1da177e4 LT |
207 | struct net_bridge |
208 | { | |
209 | spinlock_t lock; | |
210 | struct list_head port_list; | |
211 | struct net_device *dev; | |
14bb4789 | 212 | |
8f84985f | 213 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
214 | spinlock_t hash_lock; |
215 | struct hlist_head hash[BR_HASH_SIZE]; | |
34666d46 | 216 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
4adf0af6 | 217 | struct rtable fake_rtable; |
4df53d8b PM |
218 | bool nf_call_iptables; |
219 | bool nf_call_ip6tables; | |
220 | bool nf_call_arptables; | |
4adf0af6 | 221 | #endif |
515853cc | 222 | u16 group_fwd_mask; |
f2808d22 | 223 | u16 group_fwd_mask_required; |
515853cc | 224 | |
1da177e4 LT |
225 | /* STP */ |
226 | bridge_id designated_root; | |
227 | bridge_id bridge_id; | |
228 | u32 root_path_cost; | |
229 | unsigned long max_age; | |
230 | unsigned long hello_time; | |
231 | unsigned long forward_delay; | |
232 | unsigned long bridge_max_age; | |
233 | unsigned long ageing_time; | |
234 | unsigned long bridge_hello_time; | |
235 | unsigned long bridge_forward_delay; | |
236 | ||
fda93d92 | 237 | u8 group_addr[ETH_ALEN]; |
204177f3 | 238 | bool group_addr_set; |
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; | |
eb1d1641 HX |
261 | u32 multicast_startup_query_count; |
262 | ||
263 | unsigned long multicast_last_member_interval; | |
264 | unsigned long multicast_membership_interval; | |
265 | unsigned long multicast_querier_interval; | |
266 | unsigned long multicast_query_interval; | |
267 | unsigned long multicast_query_response_interval; | |
268 | unsigned long multicast_startup_query_interval; | |
269 | ||
270 | spinlock_t multicast_lock; | |
e8051688 | 271 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 272 | struct hlist_head router_list; |
eb1d1641 HX |
273 | |
274 | struct timer_list multicast_router_timer; | |
90010b36 LL |
275 | struct bridge_mcast_other_query ip4_other_query; |
276 | struct bridge_mcast_own_query ip4_own_query; | |
dc4eb53a | 277 | struct bridge_mcast_querier ip4_querier; |
cc0fdd80 | 278 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
279 | struct bridge_mcast_other_query ip6_other_query; |
280 | struct bridge_mcast_own_query ip6_own_query; | |
dc4eb53a | 281 | struct bridge_mcast_querier ip6_querier; |
cc0fdd80 | 282 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
283 | #endif |
284 | ||
1da177e4 LT |
285 | struct timer_list hello_timer; |
286 | struct timer_list tcn_timer; | |
287 | struct timer_list topology_change_timer; | |
288 | struct timer_list gc_timer; | |
43b98c4a | 289 | struct kobject *ifobj; |
e028e4b8 | 290 | u32 auto_cnt; |
243a2e63 VY |
291 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
292 | u8 vlan_enabled; | |
8580e211 | 293 | __be16 vlan_proto; |
96a20d9d | 294 | u16 default_pvid; |
243a2e63 VY |
295 | struct net_port_vlans __rcu *vlan_info; |
296 | #endif | |
1da177e4 LT |
297 | }; |
298 | ||
68b7c895 HX |
299 | struct br_input_skb_cb { |
300 | struct net_device *brdev; | |
93fdd47e | 301 | |
32dec5dd | 302 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
303 | int igmp; |
304 | int mrouters_only; | |
32dec5dd | 305 | #endif |
93fdd47e HX |
306 | |
307 | u16 frag_max_size; | |
842a9ae0 | 308 | bool proxyarp_replied; |
93fdd47e | 309 | |
20adfa1a VY |
310 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
311 | bool vlan_filtered; | |
312 | #endif | |
68b7c895 HX |
313 | }; |
314 | ||
315 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
316 | ||
32dec5dd YH |
317 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
318 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
319 | #else | |
320 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
321 | #endif | |
322 | ||
28a16c97 | 323 | #define br_printk(level, br, format, args...) \ |
324 | printk(level "%s: " format, (br)->dev->name, ##args) | |
325 | ||
326 | #define br_err(__br, format, args...) \ | |
327 | br_printk(KERN_ERR, __br, format, ##args) | |
328 | #define br_warn(__br, format, args...) \ | |
329 | br_printk(KERN_WARNING, __br, format, ##args) | |
330 | #define br_notice(__br, format, args...) \ | |
331 | br_printk(KERN_NOTICE, __br, format, ##args) | |
332 | #define br_info(__br, format, args...) \ | |
333 | br_printk(KERN_INFO, __br, format, ##args) | |
334 | ||
335 | #define br_debug(br, format, args...) \ | |
336 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
337 | ||
1da177e4 LT |
338 | /* called under bridge lock */ |
339 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
340 | { | |
341 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
342 | } | |
343 | ||
1da177e4 | 344 | /* br_device.c */ |
348662a1 JP |
345 | void br_dev_setup(struct net_device *dev); |
346 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
347 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 348 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
349 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
350 | struct sk_buff *skb) | |
351 | { | |
352 | struct netpoll *np = p->np; | |
353 | ||
354 | if (np) | |
355 | netpoll_send_skb(np, skb); | |
356 | } | |
357 | ||
a8779ec1 | 358 | int br_netpoll_enable(struct net_bridge_port *p); |
348662a1 | 359 | void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 360 | #else |
9f70b0fc | 361 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
362 | struct sk_buff *skb) |
363 | { | |
364 | } | |
cfb478da | 365 | |
a8779ec1 | 366 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
91d2c34a HX |
367 | { |
368 | return 0; | |
369 | } | |
370 | ||
371 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
372 | { | |
373 | } | |
cfb478da | 374 | #endif |
1da177e4 LT |
375 | |
376 | /* br_fdb.c */ | |
348662a1 JP |
377 | int br_fdb_init(void); |
378 | void br_fdb_fini(void); | |
379 | void br_fdb_flush(struct net_bridge *br); | |
424bb9c9 TM |
380 | void br_fdb_find_delete_local(struct net_bridge *br, |
381 | const struct net_bridge_port *p, | |
382 | const unsigned char *addr, u16 vid); | |
348662a1 JP |
383 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
384 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
385 | void br_fdb_cleanup(unsigned long arg); | |
386 | void br_fdb_delete_by_port(struct net_bridge *br, | |
387 | const struct net_bridge_port *p, int do_all); | |
388 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
389 | const unsigned char *addr, __u16 vid); | |
390 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
391 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
392 | unsigned long off); | |
393 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
394 | const unsigned char *addr, u16 vid); | |
395 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
a5642ab4 | 396 | const unsigned char *addr, u16 vid, bool added_by_user); |
348662a1 JP |
397 | |
398 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
f6f6424b | 399 | struct net_device *dev, const unsigned char *addr, u16 vid); |
348662a1 | 400 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, |
f6f6424b | 401 | const unsigned char *addr, u16 vid, u16 nlh_flags); |
348662a1 | 402 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
5d5eacb3 | 403 | struct net_device *dev, struct net_device *fdev, int idx); |
8db24af7 VY |
404 | int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
405 | void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); | |
3aeb6617 JP |
406 | int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, |
407 | const unsigned char *addr, u16 vid); | |
408 | int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, | |
409 | const unsigned char *addr, u16 vid); | |
1da177e4 LT |
410 | |
411 | /* br_forward.c */ | |
348662a1 | 412 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
7026b1dd | 413 | int br_dev_queue_push_xmit(struct sock *sk, struct sk_buff *skb); |
348662a1 | 414 | void br_forward(const struct net_bridge_port *to, |
7f7708f0 | 415 | struct sk_buff *skb, struct sk_buff *skb0); |
7026b1dd | 416 | int br_forward_finish(struct sock *sk, struct sk_buff *skb); |
348662a1 JP |
417 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); |
418 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
419 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
420 | |
421 | /* br_if.c */ | |
348662a1 JP |
422 | void br_port_carrier_check(struct net_bridge_port *p); |
423 | int br_add_bridge(struct net *net, const char *name); | |
424 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
425 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
426 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
427 | int br_min_mtu(const struct net_bridge *br); | |
428 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
429 | netdev_features_t features); | |
e028e4b8 | 430 | void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
2796d0c6 | 431 | void br_manage_promisc(struct net_bridge *br); |
1da177e4 LT |
432 | |
433 | /* br_input.c */ | |
7026b1dd | 434 | int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb); |
348662a1 | 435 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 | 436 | |
859828c0 JP |
437 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
438 | { | |
439 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
440 | } | |
441 | ||
442 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
443 | { | |
444 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
445 | } | |
446 | ||
1da177e4 | 447 | /* br_ioctl.c */ |
348662a1 JP |
448 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
449 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
450 | void __user *arg); | |
1da177e4 | 451 | |
eb1d1641 HX |
452 | /* br_multicast.c */ |
453 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 454 | extern unsigned int br_mdb_rehash_seq; |
348662a1 | 455 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 456 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
457 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
458 | struct sk_buff *skb, u16 vid); | |
459 | void br_multicast_add_port(struct net_bridge_port *port); | |
460 | void br_multicast_del_port(struct net_bridge_port *port); | |
461 | void br_multicast_enable_port(struct net_bridge_port *port); | |
462 | void br_multicast_disable_port(struct net_bridge_port *port); | |
463 | void br_multicast_init(struct net_bridge *br); | |
464 | void br_multicast_open(struct net_bridge *br); | |
465 | void br_multicast_stop(struct net_bridge *br); | |
466 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
467 | struct sk_buff *skb); | |
468 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
469 | struct sk_buff *skb, struct sk_buff *skb2); | |
470 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
471 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
472 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
473 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
474 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
475 | struct net_bridge_mdb_entry * | |
476 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
477 | struct net_bridge_mdb_entry * | |
478 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
479 | struct br_ip *group); | |
480 | void br_multicast_free_pg(struct rcu_head *head); | |
481 | struct net_bridge_port_group * | |
482 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
483 | struct net_bridge_port_group __rcu *next, | |
484 | unsigned char state); | |
485 | void br_mdb_init(void); | |
486 | void br_mdb_uninit(void); | |
487 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
488 | struct br_ip *group, int type); | |
85b35269 | 489 | |
cfd56754 CW |
490 | #define mlock_dereference(X, br) \ |
491 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
492 | ||
85b35269 SS |
493 | static inline bool br_multicast_is_router(struct net_bridge *br) |
494 | { | |
495 | return br->multicast_router == 2 || | |
496 | (br->multicast_router == 1 && | |
497 | timer_pending(&br->multicast_router_timer)); | |
498 | } | |
b00589af | 499 | |
cc0fdd80 LL |
500 | static inline bool |
501 | __br_multicast_querier_exists(struct net_bridge *br, | |
90010b36 | 502 | struct bridge_mcast_other_query *querier) |
b00589af | 503 | { |
cc0fdd80 LL |
504 | return time_is_before_jiffies(querier->delay_time) && |
505 | (br->multicast_querier || timer_pending(&querier->timer)); | |
506 | } | |
507 | ||
508 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
509 | struct ethhdr *eth) | |
510 | { | |
511 | switch (eth->h_proto) { | |
512 | case (htons(ETH_P_IP)): | |
90010b36 | 513 | return __br_multicast_querier_exists(br, &br->ip4_other_query); |
cc0fdd80 LL |
514 | #if IS_ENABLED(CONFIG_IPV6) |
515 | case (htons(ETH_P_IPV6)): | |
90010b36 | 516 | return __br_multicast_querier_exists(br, &br->ip6_other_query); |
cc0fdd80 LL |
517 | #endif |
518 | default: | |
519 | return false; | |
520 | } | |
b00589af | 521 | } |
eb1d1641 HX |
522 | #else |
523 | static inline int br_multicast_rcv(struct net_bridge *br, | |
524 | struct net_bridge_port *port, | |
06499098 VY |
525 | struct sk_buff *skb, |
526 | u16 vid) | |
eb1d1641 HX |
527 | { |
528 | return 0; | |
529 | } | |
530 | ||
531 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 532 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
533 | { |
534 | return NULL; | |
535 | } | |
536 | ||
537 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
538 | { | |
539 | } | |
540 | ||
541 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
542 | { | |
543 | } | |
544 | ||
545 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
546 | { | |
547 | } | |
548 | ||
549 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
550 | { | |
551 | } | |
552 | ||
553 | static inline void br_multicast_init(struct net_bridge *br) | |
554 | { | |
555 | } | |
556 | ||
557 | static inline void br_multicast_open(struct net_bridge *br) | |
558 | { | |
559 | } | |
560 | ||
561 | static inline void br_multicast_stop(struct net_bridge *br) | |
562 | { | |
563 | } | |
5cb5e947 HX |
564 | |
565 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
566 | struct sk_buff *skb) | |
567 | { | |
568 | } | |
569 | ||
570 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
571 | struct sk_buff *skb, | |
572 | struct sk_buff *skb2) | |
573 | { | |
574 | } | |
eb1d1641 HX |
575 | static inline bool br_multicast_is_router(struct net_bridge *br) |
576 | { | |
85b35269 | 577 | return 0; |
eb1d1641 | 578 | } |
cc0fdd80 LL |
579 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
580 | struct ethhdr *eth) | |
b00589af LL |
581 | { |
582 | return false; | |
583 | } | |
fdb184d1 RR |
584 | static inline void br_mdb_init(void) |
585 | { | |
586 | } | |
587 | static inline void br_mdb_uninit(void) | |
588 | { | |
589 | } | |
85b35269 | 590 | #endif |
eb1d1641 | 591 | |
243a2e63 VY |
592 | /* br_vlan.c */ |
593 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
594 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
595 | struct sk_buff *skb, u16 *vid); | |
596 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
597 | const struct sk_buff *skb); | |
e0d7968a | 598 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); |
348662a1 JP |
599 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
600 | const struct net_port_vlans *v, | |
601 | struct sk_buff *skb); | |
602 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
603 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
604 | void br_vlan_flush(struct net_bridge *br); | |
2b292fb4 | 605 | bool br_vlan_find(struct net_bridge *br, u16 vid); |
204177f3 | 606 | void br_recalculate_fwd_mask(struct net_bridge *br); |
348662a1 | 607 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
204177f3 | 608 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val); |
5be5a2df | 609 | int br_vlan_init(struct net_bridge *br); |
96a20d9d | 610 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val); |
348662a1 JP |
611 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
612 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
613 | void nbp_vlan_flush(struct net_bridge_port *port); | |
614 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
5be5a2df | 615 | int nbp_vlan_init(struct net_bridge_port *port); |
a37b85c9 VY |
616 | |
617 | static inline struct net_port_vlans *br_get_vlan_info( | |
618 | const struct net_bridge *br) | |
619 | { | |
1690be63 | 620 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
621 | } |
622 | ||
623 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
624 | const struct net_bridge_port *p) | |
625 | { | |
1690be63 | 626 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
627 | } |
628 | ||
629 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
630 | * skb, the vlan tag will always be present if the frame was tagged. | |
631 | */ | |
632 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
633 | { | |
634 | int err = 0; | |
635 | ||
df8a39de JP |
636 | if (skb_vlan_tag_present(skb)) |
637 | *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK; | |
a37b85c9 VY |
638 | else { |
639 | *vid = 0; | |
640 | err = -EINVAL; | |
641 | } | |
642 | ||
643 | return err; | |
644 | } | |
78851988 VY |
645 | |
646 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
647 | { | |
5be5a2df VY |
648 | if (!v) |
649 | return 0; | |
650 | ||
78851988 | 651 | smp_rmb(); |
3df6bf45 | 652 | return v->pvid; |
78851988 VY |
653 | } |
654 | ||
2796d0c6 VY |
655 | static inline int br_vlan_enabled(struct net_bridge *br) |
656 | { | |
657 | return br->vlan_enabled; | |
658 | } | |
243a2e63 | 659 | #else |
a37b85c9 VY |
660 | static inline bool br_allowed_ingress(struct net_bridge *br, |
661 | struct net_port_vlans *v, | |
78851988 VY |
662 | struct sk_buff *skb, |
663 | u16 *vid) | |
a37b85c9 VY |
664 | { |
665 | return true; | |
666 | } | |
667 | ||
85f46c6b VY |
668 | static inline bool br_allowed_egress(struct net_bridge *br, |
669 | const struct net_port_vlans *v, | |
670 | const struct sk_buff *skb) | |
671 | { | |
672 | return true; | |
673 | } | |
674 | ||
e0d7968a TM |
675 | static inline bool br_should_learn(struct net_bridge_port *p, |
676 | struct sk_buff *skb, u16 *vid) | |
677 | { | |
678 | return true; | |
679 | } | |
680 | ||
78851988 VY |
681 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
682 | const struct net_port_vlans *v, | |
683 | struct sk_buff *skb) | |
684 | { | |
685 | return skb; | |
686 | } | |
687 | ||
552406c4 | 688 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
689 | { |
690 | return -EOPNOTSUPP; | |
691 | } | |
692 | ||
693 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
694 | { | |
695 | return -EOPNOTSUPP; | |
696 | } | |
697 | ||
698 | static inline void br_vlan_flush(struct net_bridge *br) | |
699 | { | |
700 | } | |
701 | ||
2b292fb4 TM |
702 | static inline bool br_vlan_find(struct net_bridge *br, u16 vid) |
703 | { | |
704 | return false; | |
705 | } | |
706 | ||
204177f3 TM |
707 | static inline void br_recalculate_fwd_mask(struct net_bridge *br) |
708 | { | |
709 | } | |
710 | ||
5be5a2df | 711 | static inline int br_vlan_init(struct net_bridge *br) |
8580e211 | 712 | { |
5be5a2df | 713 | return 0; |
8580e211 TM |
714 | } |
715 | ||
552406c4 | 716 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
717 | { |
718 | return -EOPNOTSUPP; | |
719 | } | |
720 | ||
721 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
722 | { | |
723 | return -EOPNOTSUPP; | |
724 | } | |
725 | ||
726 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
727 | { | |
728 | } | |
729 | ||
a37b85c9 VY |
730 | static inline struct net_port_vlans *br_get_vlan_info( |
731 | const struct net_bridge *br) | |
732 | { | |
733 | return NULL; | |
734 | } | |
735 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
736 | const struct net_bridge_port *p) | |
737 | { | |
738 | return NULL; | |
739 | } | |
740 | ||
bc9a25d2 VY |
741 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
742 | { | |
743 | return false; | |
744 | } | |
745 | ||
5be5a2df VY |
746 | static inline int nbp_vlan_init(struct net_bridge_port *port) |
747 | { | |
748 | return 0; | |
749 | } | |
750 | ||
78851988 | 751 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
752 | { |
753 | return 0; | |
754 | } | |
78851988 VY |
755 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
756 | { | |
3df6bf45 | 757 | return 0; |
78851988 | 758 | } |
2796d0c6 | 759 | |
d4f0e095 | 760 | static inline int br_vlan_enabled(struct net_bridge *br) |
2796d0c6 VY |
761 | { |
762 | return 0; | |
763 | } | |
243a2e63 VY |
764 | #endif |
765 | ||
1a4ba64d PNA |
766 | struct nf_br_ops { |
767 | int (*br_dev_xmit_hook)(struct sk_buff *skb); | |
768 | }; | |
769 | extern const struct nf_br_ops __rcu *nf_br_ops; | |
770 | ||
1da177e4 | 771 | /* br_netfilter.c */ |
34666d46 PNA |
772 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
773 | int br_nf_core_init(void); | |
774 | void br_nf_core_fini(void); | |
348662a1 | 775 | void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 | 776 | #else |
34666d46 PNA |
777 | static inline int br_nf_core_init(void) { return 0; } |
778 | static inline void br_nf_core_fini(void) {} | |
4adf0af6 | 779 | #define br_netfilter_rtable_init(x) |
c0909713 | 780 | #endif |
1da177e4 LT |
781 | |
782 | /* br_stp.c */ | |
348662a1 | 783 | void br_log_state(const struct net_bridge_port *p); |
775dd692 | 784 | void br_set_state(struct net_bridge_port *p, unsigned int state); |
348662a1 JP |
785 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); |
786 | void br_init_port(struct net_bridge_port *p); | |
787 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 788 | |
348662a1 JP |
789 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
790 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
791 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
792 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 793 | |
794 | ||
1da177e4 | 795 | /* br_stp_if.c */ |
348662a1 JP |
796 | void br_stp_enable_bridge(struct net_bridge *br); |
797 | void br_stp_disable_bridge(struct net_bridge *br); | |
798 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
799 | void br_stp_enable_port(struct net_bridge_port *p); | |
800 | void br_stp_disable_port(struct net_bridge_port *p); | |
801 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
802 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
803 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
804 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
805 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
806 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
807 | |
808 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 809 | struct stp_proto; |
348662a1 JP |
810 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
811 | struct net_device *dev); | |
1da177e4 LT |
812 | |
813 | /* br_stp_timer.c */ | |
348662a1 JP |
814 | void br_stp_timer_init(struct net_bridge *br); |
815 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
816 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
817 | |
818 | /* br.c */ | |
e6373c4c | 819 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
820 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
821 | #endif | |
1da177e4 | 822 | |
11dc1f36 | 823 | /* br_netlink.c */ |
149ddd83 | 824 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
825 | int br_netlink_init(void); |
826 | void br_netlink_fini(void); | |
827 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
add511b3 RP |
828 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); |
829 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); | |
348662a1 | 830 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, |
46c264da | 831 | u32 filter_mask, int nlflags); |
11dc1f36 | 832 | |
1da177e4 LT |
833 | #ifdef CONFIG_SYSFS |
834 | /* br_sysfs_if.c */ | |
52cf25d0 | 835 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
836 | int br_sysfs_addif(struct net_bridge_port *p); |
837 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
838 | |
839 | /* br_sysfs_br.c */ | |
348662a1 JP |
840 | int br_sysfs_addbr(struct net_device *dev); |
841 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
842 | |
843 | #else | |
844 | ||
0cb2bbbe LJ |
845 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
846 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
847 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
848 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
849 | #endif /* CONFIG_SYSFS */ |
850 | ||
851 | #endif |