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 | ||
cc0fdd80 LL |
69 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
70 | /* our own querier */ | |
71 | struct bridge_mcast_query { | |
72 | struct timer_list timer; | |
73 | u32 startup_sent; | |
74 | }; | |
75 | ||
76 | /* other querier */ | |
77 | struct bridge_mcast_querier { | |
78 | struct timer_list timer; | |
79 | unsigned long delay_time; | |
80 | }; | |
81 | #endif | |
82 | ||
243a2e63 VY |
83 | struct net_port_vlans { |
84 | u16 port_idx; | |
78851988 | 85 | u16 pvid; |
243a2e63 VY |
86 | union { |
87 | struct net_bridge_port *port; | |
88 | struct net_bridge *br; | |
89 | } parent; | |
90 | struct rcu_head rcu; | |
91 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 92 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 93 | u16 num_vlans; |
243a2e63 VY |
94 | }; |
95 | ||
1da177e4 LT |
96 | struct net_bridge_fdb_entry |
97 | { | |
98 | struct hlist_node hlist; | |
99 | struct net_bridge_port *dst; | |
100 | ||
101 | struct rcu_head rcu; | |
7cd8861a | 102 | unsigned long updated; |
103 | unsigned long used; | |
1da177e4 LT |
104 | mac_addr addr; |
105 | unsigned char is_local; | |
106 | unsigned char is_static; | |
2ba071ec | 107 | __u16 vlan_id; |
1da177e4 LT |
108 | }; |
109 | ||
eb1d1641 HX |
110 | struct net_bridge_port_group { |
111 | struct net_bridge_port *port; | |
e8051688 | 112 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
113 | struct hlist_node mglist; |
114 | struct rcu_head rcu; | |
115 | struct timer_list timer; | |
8ef2a9a5 | 116 | struct br_ip addr; |
ccb1c31a | 117 | unsigned char state; |
eb1d1641 HX |
118 | }; |
119 | ||
120 | struct net_bridge_mdb_entry | |
121 | { | |
122 | struct hlist_node hlist[2]; | |
eb1d1641 | 123 | struct net_bridge *br; |
e8051688 | 124 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
125 | struct rcu_head rcu; |
126 | struct timer_list timer; | |
8ef2a9a5 | 127 | struct br_ip addr; |
8a870178 | 128 | bool mglist; |
eb1d1641 HX |
129 | }; |
130 | ||
131 | struct net_bridge_mdb_htable | |
132 | { | |
133 | struct hlist_head *mhash; | |
134 | struct rcu_head rcu; | |
135 | struct net_bridge_mdb_htable *old; | |
136 | u32 size; | |
137 | u32 max; | |
138 | u32 secret; | |
139 | u32 ver; | |
140 | }; | |
141 | ||
1da177e4 LT |
142 | struct net_bridge_port |
143 | { | |
144 | struct net_bridge *br; | |
145 | struct net_device *dev; | |
146 | struct list_head list; | |
147 | ||
148 | /* STP */ | |
149 | u8 priority; | |
150 | u8 state; | |
151 | u16 port_no; | |
152 | unsigned char topology_change_ack; | |
153 | unsigned char config_pending; | |
154 | port_id port_id; | |
155 | port_id designated_port; | |
156 | bridge_id designated_root; | |
157 | bridge_id designated_bridge; | |
158 | u32 path_cost; | |
159 | u32 designated_cost; | |
0c03150e | 160 | unsigned long designated_age; |
1da177e4 LT |
161 | |
162 | struct timer_list forward_delay_timer; | |
163 | struct timer_list hold_timer; | |
164 | struct timer_list message_age_timer; | |
165 | struct kobject kobj; | |
166 | struct rcu_head rcu; | |
3982d3d2 FA |
167 | |
168 | unsigned long flags; | |
169 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 170 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 171 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 172 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 173 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 174 | #define BR_LEARNING 0x00000020 |
867a5943 | 175 | #define BR_FLOOD 0x00000040 |
eb1d1641 HX |
176 | |
177 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
cc0fdd80 LL |
178 | struct bridge_mcast_query ip4_query; |
179 | #if IS_ENABLED(CONFIG_IPV6) | |
180 | struct bridge_mcast_query ip6_query; | |
181 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
182 | unsigned char multicast_router; |
183 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
184 | struct hlist_head mglist; |
185 | struct hlist_node rlist; | |
186 | #endif | |
e0f43752 SA |
187 | |
188 | #ifdef CONFIG_SYSFS | |
189 | char sysfs_name[IFNAMSIZ]; | |
190 | #endif | |
91d2c34a HX |
191 | |
192 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
193 | struct netpoll *np; | |
194 | #endif | |
243a2e63 VY |
195 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
196 | struct net_port_vlans __rcu *vlan_info; | |
197 | #endif | |
1da177e4 LT |
198 | }; |
199 | ||
f350a0a8 JP |
200 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
201 | ||
b5ed54e9 | 202 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
203 | { | |
716ec052 | 204 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 205 | } |
206 | ||
1fb1754a | 207 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 208 | { |
ec1e5610 ED |
209 | return br_port_exists(dev) ? |
210 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 211 | } |
212 | ||
1da177e4 LT |
213 | struct net_bridge |
214 | { | |
215 | spinlock_t lock; | |
216 | struct list_head port_list; | |
217 | struct net_device *dev; | |
14bb4789 | 218 | |
8f84985f | 219 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
220 | spinlock_t hash_lock; |
221 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
222 | #ifdef CONFIG_BRIDGE_NETFILTER |
223 | struct rtable fake_rtable; | |
4df53d8b PM |
224 | bool nf_call_iptables; |
225 | bool nf_call_ip6tables; | |
226 | bool nf_call_arptables; | |
4adf0af6 | 227 | #endif |
515853cc | 228 | u16 group_fwd_mask; |
229 | ||
1da177e4 LT |
230 | /* STP */ |
231 | bridge_id designated_root; | |
232 | bridge_id bridge_id; | |
233 | u32 root_path_cost; | |
234 | unsigned long max_age; | |
235 | unsigned long hello_time; | |
236 | unsigned long forward_delay; | |
237 | unsigned long bridge_max_age; | |
238 | unsigned long ageing_time; | |
239 | unsigned long bridge_hello_time; | |
240 | unsigned long bridge_forward_delay; | |
241 | ||
fda93d92 | 242 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 243 | u16 root_port; |
9cde0708 SH |
244 | |
245 | enum { | |
246 | BR_NO_STP, /* no spanning tree */ | |
247 | BR_KERNEL_STP, /* old STP in kernel */ | |
248 | BR_USER_STP, /* new RSTP in userspace */ | |
249 | } stp_enabled; | |
250 | ||
1da177e4 LT |
251 | unsigned char topology_change; |
252 | unsigned char topology_change_detected; | |
253 | ||
eb1d1641 HX |
254 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
255 | unsigned char multicast_router; | |
256 | ||
257 | u8 multicast_disabled:1; | |
c5c23260 | 258 | u8 multicast_querier:1; |
1c8ad5bf | 259 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
260 | |
261 | u32 hash_elasticity; | |
262 | u32 hash_max; | |
263 | ||
264 | u32 multicast_last_member_count; | |
eb1d1641 HX |
265 | u32 multicast_startup_query_count; |
266 | ||
267 | unsigned long multicast_last_member_interval; | |
268 | unsigned long multicast_membership_interval; | |
269 | unsigned long multicast_querier_interval; | |
270 | unsigned long multicast_query_interval; | |
271 | unsigned long multicast_query_response_interval; | |
272 | unsigned long multicast_startup_query_interval; | |
273 | ||
274 | spinlock_t multicast_lock; | |
e8051688 | 275 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 276 | struct hlist_head router_list; |
eb1d1641 HX |
277 | |
278 | struct timer_list multicast_router_timer; | |
cc0fdd80 LL |
279 | struct bridge_mcast_querier ip4_querier; |
280 | struct bridge_mcast_query ip4_query; | |
281 | #if IS_ENABLED(CONFIG_IPV6) | |
282 | struct bridge_mcast_querier ip6_querier; | |
283 | struct bridge_mcast_query ip6_query; | |
284 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
285 | #endif |
286 | ||
1da177e4 LT |
287 | struct timer_list hello_timer; |
288 | struct timer_list tcn_timer; | |
289 | struct timer_list topology_change_timer; | |
290 | struct timer_list gc_timer; | |
43b98c4a | 291 | struct kobject *ifobj; |
243a2e63 VY |
292 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
293 | u8 vlan_enabled; | |
294 | struct net_port_vlans __rcu *vlan_info; | |
295 | #endif | |
1da177e4 LT |
296 | }; |
297 | ||
68b7c895 HX |
298 | struct br_input_skb_cb { |
299 | struct net_device *brdev; | |
32dec5dd | 300 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
301 | int igmp; |
302 | int mrouters_only; | |
32dec5dd | 303 | #endif |
68b7c895 HX |
304 | }; |
305 | ||
306 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
307 | ||
32dec5dd YH |
308 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
309 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
310 | #else | |
311 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
312 | #endif | |
313 | ||
28a16c97 | 314 | #define br_printk(level, br, format, args...) \ |
315 | printk(level "%s: " format, (br)->dev->name, ##args) | |
316 | ||
317 | #define br_err(__br, format, args...) \ | |
318 | br_printk(KERN_ERR, __br, format, ##args) | |
319 | #define br_warn(__br, format, args...) \ | |
320 | br_printk(KERN_WARNING, __br, format, ##args) | |
321 | #define br_notice(__br, format, args...) \ | |
322 | br_printk(KERN_NOTICE, __br, format, ##args) | |
323 | #define br_info(__br, format, args...) \ | |
324 | br_printk(KERN_INFO, __br, format, ##args) | |
325 | ||
326 | #define br_debug(br, format, args...) \ | |
327 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
328 | ||
1da177e4 | 329 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
330 | |
331 | /* called under bridge lock */ | |
332 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
333 | { | |
334 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
335 | } | |
336 | ||
1da177e4 | 337 | /* br_device.c */ |
348662a1 JP |
338 | void br_dev_setup(struct net_device *dev); |
339 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
340 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 341 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
342 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
343 | struct sk_buff *skb) | |
344 | { | |
345 | struct netpoll *np = p->np; | |
346 | ||
347 | if (np) | |
348 | netpoll_send_skb(np, skb); | |
349 | } | |
350 | ||
348662a1 JP |
351 | int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
352 | void br_netpoll_disable(struct net_bridge_port *p); | |
cfb478da | 353 | #else |
9f70b0fc | 354 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
355 | struct sk_buff *skb) |
356 | { | |
357 | } | |
cfb478da | 358 | |
47be03a2 | 359 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
360 | { |
361 | return 0; | |
362 | } | |
363 | ||
364 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
365 | { | |
366 | } | |
cfb478da | 367 | #endif |
1da177e4 LT |
368 | |
369 | /* br_fdb.c */ | |
348662a1 JP |
370 | int br_fdb_init(void); |
371 | void br_fdb_fini(void); | |
372 | void br_fdb_flush(struct net_bridge *br); | |
373 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); | |
374 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
375 | void br_fdb_cleanup(unsigned long arg); | |
376 | void br_fdb_delete_by_port(struct net_bridge *br, | |
377 | const struct net_bridge_port *p, int do_all); | |
378 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
379 | const unsigned char *addr, __u16 vid); | |
380 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
381 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
382 | unsigned long off); | |
383 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
384 | const unsigned char *addr, u16 vid); | |
385 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
386 | const unsigned char *addr, u16 vid); | |
387 | int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); | |
388 | ||
389 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
390 | struct net_device *dev, const unsigned char *addr); | |
391 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, | |
392 | const unsigned char *addr, u16 nlh_flags); | |
393 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
394 | struct net_device *dev, int idx); | |
1da177e4 LT |
395 | |
396 | /* br_forward.c */ | |
348662a1 JP |
397 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
398 | int br_dev_queue_push_xmit(struct sk_buff *skb); | |
399 | void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 400 | struct sk_buff *skb, struct sk_buff *skb0); |
348662a1 JP |
401 | int br_forward_finish(struct sk_buff *skb); |
402 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); | |
403 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
404 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
405 | |
406 | /* br_if.c */ | |
348662a1 JP |
407 | void br_port_carrier_check(struct net_bridge_port *p); |
408 | int br_add_bridge(struct net *net, const char *name); | |
409 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
410 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
411 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
412 | int br_min_mtu(const struct net_bridge *br); | |
413 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
414 | netdev_features_t features); | |
1da177e4 LT |
415 | |
416 | /* br_input.c */ | |
348662a1 JP |
417 | int br_handle_frame_finish(struct sk_buff *skb); |
418 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); | |
1da177e4 | 419 | |
859828c0 JP |
420 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
421 | { | |
422 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
423 | } | |
424 | ||
425 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
426 | { | |
427 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
428 | } | |
429 | ||
1da177e4 | 430 | /* br_ioctl.c */ |
348662a1 JP |
431 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
432 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
433 | 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; |
348662a1 | 438 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 439 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
440 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
441 | struct sk_buff *skb, u16 vid); | |
442 | void br_multicast_add_port(struct net_bridge_port *port); | |
443 | void br_multicast_del_port(struct net_bridge_port *port); | |
444 | void br_multicast_enable_port(struct net_bridge_port *port); | |
445 | void br_multicast_disable_port(struct net_bridge_port *port); | |
446 | void br_multicast_init(struct net_bridge *br); | |
447 | void br_multicast_open(struct net_bridge *br); | |
448 | void br_multicast_stop(struct net_bridge *br); | |
449 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
450 | struct sk_buff *skb); | |
451 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
452 | struct sk_buff *skb, struct sk_buff *skb2); | |
453 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
454 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
455 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
456 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
457 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
458 | struct net_bridge_mdb_entry * | |
459 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
460 | struct net_bridge_mdb_entry * | |
461 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
462 | struct br_ip *group); | |
463 | void br_multicast_free_pg(struct rcu_head *head); | |
464 | struct net_bridge_port_group * | |
465 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
466 | struct net_bridge_port_group __rcu *next, | |
467 | unsigned char state); | |
468 | void br_mdb_init(void); | |
469 | void br_mdb_uninit(void); | |
470 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
471 | struct br_ip *group, int type); | |
85b35269 | 472 | |
cfd56754 CW |
473 | #define mlock_dereference(X, br) \ |
474 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
475 | ||
85b35269 SS |
476 | static inline bool br_multicast_is_router(struct net_bridge *br) |
477 | { | |
478 | return br->multicast_router == 2 || | |
479 | (br->multicast_router == 1 && | |
480 | timer_pending(&br->multicast_router_timer)); | |
481 | } | |
b00589af | 482 | |
cc0fdd80 LL |
483 | static inline bool |
484 | __br_multicast_querier_exists(struct net_bridge *br, | |
485 | struct bridge_mcast_querier *querier) | |
b00589af | 486 | { |
cc0fdd80 LL |
487 | return time_is_before_jiffies(querier->delay_time) && |
488 | (br->multicast_querier || timer_pending(&querier->timer)); | |
489 | } | |
490 | ||
491 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
492 | struct ethhdr *eth) | |
493 | { | |
494 | switch (eth->h_proto) { | |
495 | case (htons(ETH_P_IP)): | |
496 | return __br_multicast_querier_exists(br, &br->ip4_querier); | |
497 | #if IS_ENABLED(CONFIG_IPV6) | |
498 | case (htons(ETH_P_IPV6)): | |
499 | return __br_multicast_querier_exists(br, &br->ip6_querier); | |
500 | #endif | |
501 | default: | |
502 | return false; | |
503 | } | |
b00589af | 504 | } |
eb1d1641 HX |
505 | #else |
506 | static inline int br_multicast_rcv(struct net_bridge *br, | |
507 | struct net_bridge_port *port, | |
06499098 VY |
508 | struct sk_buff *skb, |
509 | u16 vid) | |
eb1d1641 HX |
510 | { |
511 | return 0; | |
512 | } | |
513 | ||
514 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 515 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
516 | { |
517 | return NULL; | |
518 | } | |
519 | ||
520 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
521 | { | |
522 | } | |
523 | ||
524 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
525 | { | |
526 | } | |
527 | ||
528 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
529 | { | |
530 | } | |
531 | ||
532 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
533 | { | |
534 | } | |
535 | ||
536 | static inline void br_multicast_init(struct net_bridge *br) | |
537 | { | |
538 | } | |
539 | ||
540 | static inline void br_multicast_open(struct net_bridge *br) | |
541 | { | |
542 | } | |
543 | ||
544 | static inline void br_multicast_stop(struct net_bridge *br) | |
545 | { | |
546 | } | |
5cb5e947 HX |
547 | |
548 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
549 | struct sk_buff *skb) | |
550 | { | |
551 | } | |
552 | ||
553 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
554 | struct sk_buff *skb, | |
555 | struct sk_buff *skb2) | |
556 | { | |
557 | } | |
eb1d1641 HX |
558 | static inline bool br_multicast_is_router(struct net_bridge *br) |
559 | { | |
85b35269 | 560 | return 0; |
eb1d1641 | 561 | } |
cc0fdd80 LL |
562 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
563 | struct ethhdr *eth) | |
b00589af LL |
564 | { |
565 | return false; | |
566 | } | |
fdb184d1 RR |
567 | static inline void br_mdb_init(void) |
568 | { | |
569 | } | |
570 | static inline void br_mdb_uninit(void) | |
571 | { | |
572 | } | |
85b35269 | 573 | #endif |
eb1d1641 | 574 | |
243a2e63 VY |
575 | /* br_vlan.c */ |
576 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
577 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
578 | struct sk_buff *skb, u16 *vid); | |
579 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
580 | const struct sk_buff *skb); | |
581 | struct sk_buff *br_handle_vlan(struct net_bridge *br, | |
582 | const struct net_port_vlans *v, | |
583 | struct sk_buff *skb); | |
584 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
585 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
586 | void br_vlan_flush(struct net_bridge *br); | |
587 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
588 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); | |
589 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
590 | void nbp_vlan_flush(struct net_bridge_port *port); | |
591 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
a37b85c9 VY |
592 | |
593 | static inline struct net_port_vlans *br_get_vlan_info( | |
594 | const struct net_bridge *br) | |
595 | { | |
1690be63 | 596 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
597 | } |
598 | ||
599 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
600 | const struct net_bridge_port *p) | |
601 | { | |
1690be63 | 602 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
603 | } |
604 | ||
605 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
606 | * skb, the vlan tag will always be present if the frame was tagged. | |
607 | */ | |
608 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
609 | { | |
610 | int err = 0; | |
611 | ||
612 | if (vlan_tx_tag_present(skb)) | |
613 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
614 | else { | |
615 | *vid = 0; | |
616 | err = -EINVAL; | |
617 | } | |
618 | ||
619 | return err; | |
620 | } | |
78851988 VY |
621 | |
622 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
623 | { | |
624 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
625 | * vid wasn't set | |
626 | */ | |
627 | smp_rmb(); | |
d1c6c708 | 628 | return v->pvid ?: VLAN_N_VID; |
78851988 VY |
629 | } |
630 | ||
243a2e63 | 631 | #else |
a37b85c9 VY |
632 | static inline bool br_allowed_ingress(struct net_bridge *br, |
633 | struct net_port_vlans *v, | |
78851988 VY |
634 | struct sk_buff *skb, |
635 | u16 *vid) | |
a37b85c9 VY |
636 | { |
637 | return true; | |
638 | } | |
639 | ||
85f46c6b VY |
640 | static inline bool br_allowed_egress(struct net_bridge *br, |
641 | const struct net_port_vlans *v, | |
642 | const struct sk_buff *skb) | |
643 | { | |
644 | return true; | |
645 | } | |
646 | ||
78851988 VY |
647 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
648 | const struct net_port_vlans *v, | |
649 | struct sk_buff *skb) | |
650 | { | |
651 | return skb; | |
652 | } | |
653 | ||
552406c4 | 654 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
655 | { |
656 | return -EOPNOTSUPP; | |
657 | } | |
658 | ||
659 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
660 | { | |
661 | return -EOPNOTSUPP; | |
662 | } | |
663 | ||
664 | static inline void br_vlan_flush(struct net_bridge *br) | |
665 | { | |
666 | } | |
667 | ||
552406c4 | 668 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
669 | { |
670 | return -EOPNOTSUPP; | |
671 | } | |
672 | ||
673 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
674 | { | |
675 | return -EOPNOTSUPP; | |
676 | } | |
677 | ||
678 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
679 | { | |
680 | } | |
681 | ||
a37b85c9 VY |
682 | static inline struct net_port_vlans *br_get_vlan_info( |
683 | const struct net_bridge *br) | |
684 | { | |
685 | return NULL; | |
686 | } | |
687 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
688 | const struct net_bridge_port *p) | |
689 | { | |
690 | return NULL; | |
691 | } | |
692 | ||
bc9a25d2 VY |
693 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
694 | { | |
695 | return false; | |
696 | } | |
697 | ||
78851988 | 698 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
699 | { |
700 | return 0; | |
701 | } | |
78851988 VY |
702 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
703 | { | |
704 | return VLAN_N_VID; /* Returns invalid vid */ | |
705 | } | |
243a2e63 VY |
706 | #endif |
707 | ||
1da177e4 | 708 | /* br_netfilter.c */ |
c0909713 | 709 | #ifdef CONFIG_BRIDGE_NETFILTER |
348662a1 JP |
710 | int br_netfilter_init(void); |
711 | void br_netfilter_fini(void); | |
712 | void br_netfilter_rtable_init(struct net_bridge *); | |
c0909713 SH |
713 | #else |
714 | #define br_netfilter_init() (0) | |
31a5b837 | 715 | #define br_netfilter_fini() do { } while (0) |
4adf0af6 | 716 | #define br_netfilter_rtable_init(x) |
c0909713 | 717 | #endif |
1da177e4 LT |
718 | |
719 | /* br_stp.c */ | |
348662a1 JP |
720 | void br_log_state(const struct net_bridge_port *p); |
721 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); | |
722 | void br_init_port(struct net_bridge_port *p); | |
723 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 724 | |
348662a1 JP |
725 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
726 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
727 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
728 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 729 | |
730 | ||
1da177e4 | 731 | /* br_stp_if.c */ |
348662a1 JP |
732 | void br_stp_enable_bridge(struct net_bridge *br); |
733 | void br_stp_disable_bridge(struct net_bridge *br); | |
734 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
735 | void br_stp_enable_port(struct net_bridge_port *p); | |
736 | void br_stp_disable_port(struct net_bridge_port *p); | |
737 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
738 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
739 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
740 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
741 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
742 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
743 | |
744 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 745 | struct stp_proto; |
348662a1 JP |
746 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
747 | struct net_device *dev); | |
1da177e4 LT |
748 | |
749 | /* br_stp_timer.c */ | |
348662a1 JP |
750 | void br_stp_timer_init(struct net_bridge *br); |
751 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
752 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
753 | |
754 | /* br.c */ | |
e6373c4c | 755 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
756 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
757 | #endif | |
1da177e4 | 758 | |
11dc1f36 | 759 | /* br_netlink.c */ |
149ddd83 | 760 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
761 | int br_netlink_init(void); |
762 | void br_netlink_fini(void); | |
763 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
764 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
765 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
766 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, | |
767 | u32 filter_mask); | |
11dc1f36 | 768 | |
1da177e4 LT |
769 | #ifdef CONFIG_SYSFS |
770 | /* br_sysfs_if.c */ | |
52cf25d0 | 771 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
772 | int br_sysfs_addif(struct net_bridge_port *p); |
773 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
774 | |
775 | /* br_sysfs_br.c */ | |
348662a1 JP |
776 | int br_sysfs_addbr(struct net_device *dev); |
777 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
778 | |
779 | #else | |
780 | ||
0cb2bbbe LJ |
781 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
782 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
783 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
784 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
785 | #endif /* CONFIG_SYSFS */ |
786 | ||
787 | #endif |