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]; | |
e5a727f6 | 49 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
50 | }; |
51 | ||
52 | struct mac_addr | |
53 | { | |
e5a727f6 | 54 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
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; | |
a5642ab4 | 107 | unsigned char added_by_user; |
2ba071ec | 108 | __u16 vlan_id; |
1da177e4 LT |
109 | }; |
110 | ||
eb1d1641 HX |
111 | struct net_bridge_port_group { |
112 | struct net_bridge_port *port; | |
e8051688 | 113 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
114 | struct hlist_node mglist; |
115 | struct rcu_head rcu; | |
116 | struct timer_list timer; | |
8ef2a9a5 | 117 | struct br_ip addr; |
ccb1c31a | 118 | unsigned char state; |
eb1d1641 HX |
119 | }; |
120 | ||
121 | struct net_bridge_mdb_entry | |
122 | { | |
123 | struct hlist_node hlist[2]; | |
eb1d1641 | 124 | struct net_bridge *br; |
e8051688 | 125 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
126 | struct rcu_head rcu; |
127 | struct timer_list timer; | |
8ef2a9a5 | 128 | struct br_ip addr; |
8a870178 | 129 | bool mglist; |
eb1d1641 HX |
130 | }; |
131 | ||
132 | struct net_bridge_mdb_htable | |
133 | { | |
134 | struct hlist_head *mhash; | |
135 | struct rcu_head rcu; | |
136 | struct net_bridge_mdb_htable *old; | |
137 | u32 size; | |
138 | u32 max; | |
139 | u32 secret; | |
140 | u32 ver; | |
141 | }; | |
142 | ||
1da177e4 LT |
143 | struct net_bridge_port |
144 | { | |
145 | struct net_bridge *br; | |
146 | struct net_device *dev; | |
147 | struct list_head list; | |
148 | ||
149 | /* STP */ | |
150 | u8 priority; | |
151 | u8 state; | |
152 | u16 port_no; | |
153 | unsigned char topology_change_ack; | |
154 | unsigned char config_pending; | |
155 | port_id port_id; | |
156 | port_id designated_port; | |
157 | bridge_id designated_root; | |
158 | bridge_id designated_bridge; | |
159 | u32 path_cost; | |
160 | u32 designated_cost; | |
0c03150e | 161 | unsigned long designated_age; |
1da177e4 LT |
162 | |
163 | struct timer_list forward_delay_timer; | |
164 | struct timer_list hold_timer; | |
165 | struct timer_list message_age_timer; | |
166 | struct kobject kobj; | |
167 | struct rcu_head rcu; | |
3982d3d2 FA |
168 | |
169 | unsigned long flags; | |
170 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 171 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 172 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 173 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 174 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 175 | #define BR_LEARNING 0x00000020 |
867a5943 | 176 | #define BR_FLOOD 0x00000040 |
eb1d1641 HX |
177 | |
178 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
cc0fdd80 LL |
179 | struct bridge_mcast_query ip4_query; |
180 | #if IS_ENABLED(CONFIG_IPV6) | |
181 | struct bridge_mcast_query ip6_query; | |
182 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
183 | unsigned char multicast_router; |
184 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
185 | struct hlist_head mglist; |
186 | struct hlist_node rlist; | |
187 | #endif | |
e0f43752 SA |
188 | |
189 | #ifdef CONFIG_SYSFS | |
190 | char sysfs_name[IFNAMSIZ]; | |
191 | #endif | |
91d2c34a HX |
192 | |
193 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
194 | struct netpoll *np; | |
195 | #endif | |
243a2e63 VY |
196 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
197 | struct net_port_vlans __rcu *vlan_info; | |
198 | #endif | |
1da177e4 LT |
199 | }; |
200 | ||
f350a0a8 JP |
201 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
202 | ||
b5ed54e9 | 203 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
204 | { | |
716ec052 | 205 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 206 | } |
207 | ||
1fb1754a | 208 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 209 | { |
ec1e5610 ED |
210 | return br_port_exists(dev) ? |
211 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 212 | } |
213 | ||
1da177e4 LT |
214 | struct net_bridge |
215 | { | |
216 | spinlock_t lock; | |
217 | struct list_head port_list; | |
218 | struct net_device *dev; | |
14bb4789 | 219 | |
8f84985f | 220 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
221 | spinlock_t hash_lock; |
222 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
223 | #ifdef CONFIG_BRIDGE_NETFILTER |
224 | struct rtable fake_rtable; | |
4df53d8b PM |
225 | bool nf_call_iptables; |
226 | bool nf_call_ip6tables; | |
227 | bool nf_call_arptables; | |
4adf0af6 | 228 | #endif |
515853cc | 229 | u16 group_fwd_mask; |
230 | ||
1da177e4 LT |
231 | /* STP */ |
232 | bridge_id designated_root; | |
233 | bridge_id bridge_id; | |
234 | u32 root_path_cost; | |
235 | unsigned long max_age; | |
236 | unsigned long hello_time; | |
237 | unsigned long forward_delay; | |
238 | unsigned long bridge_max_age; | |
239 | unsigned long ageing_time; | |
240 | unsigned long bridge_hello_time; | |
241 | unsigned long bridge_forward_delay; | |
242 | ||
fda93d92 | 243 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 244 | u16 root_port; |
9cde0708 SH |
245 | |
246 | enum { | |
247 | BR_NO_STP, /* no spanning tree */ | |
248 | BR_KERNEL_STP, /* old STP in kernel */ | |
249 | BR_USER_STP, /* new RSTP in userspace */ | |
250 | } stp_enabled; | |
251 | ||
1da177e4 LT |
252 | unsigned char topology_change; |
253 | unsigned char topology_change_detected; | |
254 | ||
eb1d1641 HX |
255 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
256 | unsigned char multicast_router; | |
257 | ||
258 | u8 multicast_disabled:1; | |
c5c23260 | 259 | u8 multicast_querier:1; |
1c8ad5bf | 260 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
261 | |
262 | u32 hash_elasticity; | |
263 | u32 hash_max; | |
264 | ||
265 | u32 multicast_last_member_count; | |
eb1d1641 HX |
266 | u32 multicast_startup_query_count; |
267 | ||
268 | unsigned long multicast_last_member_interval; | |
269 | unsigned long multicast_membership_interval; | |
270 | unsigned long multicast_querier_interval; | |
271 | unsigned long multicast_query_interval; | |
272 | unsigned long multicast_query_response_interval; | |
273 | unsigned long multicast_startup_query_interval; | |
274 | ||
275 | spinlock_t multicast_lock; | |
e8051688 | 276 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 277 | struct hlist_head router_list; |
eb1d1641 HX |
278 | |
279 | struct timer_list multicast_router_timer; | |
cc0fdd80 LL |
280 | struct bridge_mcast_querier ip4_querier; |
281 | struct bridge_mcast_query ip4_query; | |
282 | #if IS_ENABLED(CONFIG_IPV6) | |
283 | struct bridge_mcast_querier ip6_querier; | |
284 | struct bridge_mcast_query ip6_query; | |
285 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
eb1d1641 HX |
286 | #endif |
287 | ||
1da177e4 LT |
288 | struct timer_list hello_timer; |
289 | struct timer_list tcn_timer; | |
290 | struct timer_list topology_change_timer; | |
291 | struct timer_list gc_timer; | |
43b98c4a | 292 | struct kobject *ifobj; |
243a2e63 VY |
293 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
294 | u8 vlan_enabled; | |
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; | |
32dec5dd | 301 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
302 | int igmp; |
303 | int mrouters_only; | |
32dec5dd | 304 | #endif |
68b7c895 HX |
305 | }; |
306 | ||
307 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
308 | ||
32dec5dd YH |
309 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
310 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
311 | #else | |
312 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
313 | #endif | |
314 | ||
28a16c97 | 315 | #define br_printk(level, br, format, args...) \ |
316 | printk(level "%s: " format, (br)->dev->name, ##args) | |
317 | ||
318 | #define br_err(__br, format, args...) \ | |
319 | br_printk(KERN_ERR, __br, format, ##args) | |
320 | #define br_warn(__br, format, args...) \ | |
321 | br_printk(KERN_WARNING, __br, format, ##args) | |
322 | #define br_notice(__br, format, args...) \ | |
323 | br_printk(KERN_NOTICE, __br, format, ##args) | |
324 | #define br_info(__br, format, args...) \ | |
325 | br_printk(KERN_INFO, __br, format, ##args) | |
326 | ||
327 | #define br_debug(br, format, args...) \ | |
328 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
329 | ||
1da177e4 | 330 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
331 | |
332 | /* called under bridge lock */ | |
333 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
334 | { | |
335 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
336 | } | |
337 | ||
1da177e4 | 338 | /* br_device.c */ |
348662a1 JP |
339 | void br_dev_setup(struct net_device *dev); |
340 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
341 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 342 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
343 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
344 | struct sk_buff *skb) | |
345 | { | |
346 | struct netpoll *np = p->np; | |
347 | ||
348 | if (np) | |
349 | netpoll_send_skb(np, skb); | |
350 | } | |
351 | ||
a8779ec1 | 352 | int br_netpoll_enable(struct net_bridge_port *p); |
348662a1 | 353 | void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 354 | #else |
9f70b0fc | 355 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
356 | struct sk_buff *skb) |
357 | { | |
358 | } | |
cfb478da | 359 | |
a8779ec1 | 360 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
91d2c34a HX |
361 | { |
362 | return 0; | |
363 | } | |
364 | ||
365 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
366 | { | |
367 | } | |
cfb478da | 368 | #endif |
1da177e4 LT |
369 | |
370 | /* br_fdb.c */ | |
348662a1 JP |
371 | int br_fdb_init(void); |
372 | void br_fdb_fini(void); | |
373 | void br_fdb_flush(struct net_bridge *br); | |
424bb9c9 TM |
374 | void br_fdb_find_delete_local(struct net_bridge *br, |
375 | const struct net_bridge_port *p, | |
376 | const unsigned char *addr, u16 vid); | |
348662a1 JP |
377 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
378 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
379 | void br_fdb_cleanup(unsigned long arg); | |
380 | void br_fdb_delete_by_port(struct net_bridge *br, | |
381 | const struct net_bridge_port *p, int do_all); | |
382 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
383 | const unsigned char *addr, __u16 vid); | |
384 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
385 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
386 | unsigned long off); | |
387 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
388 | const unsigned char *addr, u16 vid); | |
389 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
a5642ab4 | 390 | const unsigned char *addr, u16 vid, bool added_by_user); |
348662a1 JP |
391 | |
392 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
393 | struct net_device *dev, const unsigned char *addr); | |
394 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, | |
395 | const unsigned char *addr, u16 nlh_flags); | |
396 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
397 | struct net_device *dev, int idx); | |
1da177e4 LT |
398 | |
399 | /* br_forward.c */ | |
348662a1 JP |
400 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
401 | int br_dev_queue_push_xmit(struct sk_buff *skb); | |
402 | void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 403 | struct sk_buff *skb, struct sk_buff *skb0); |
348662a1 JP |
404 | int br_forward_finish(struct sk_buff *skb); |
405 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); | |
406 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
407 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
408 | |
409 | /* br_if.c */ | |
348662a1 JP |
410 | void br_port_carrier_check(struct net_bridge_port *p); |
411 | int br_add_bridge(struct net *net, const char *name); | |
412 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
413 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
414 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
415 | int br_min_mtu(const struct net_bridge *br); | |
416 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
417 | netdev_features_t features); | |
1da177e4 LT |
418 | |
419 | /* br_input.c */ | |
348662a1 JP |
420 | int br_handle_frame_finish(struct sk_buff *skb); |
421 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); | |
1da177e4 | 422 | |
859828c0 JP |
423 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
424 | { | |
425 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
426 | } | |
427 | ||
428 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
429 | { | |
430 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
431 | } | |
432 | ||
1da177e4 | 433 | /* br_ioctl.c */ |
348662a1 JP |
434 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
435 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
436 | void __user *arg); | |
1da177e4 | 437 | |
eb1d1641 HX |
438 | /* br_multicast.c */ |
439 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 440 | extern unsigned int br_mdb_rehash_seq; |
348662a1 | 441 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 442 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
443 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
444 | struct sk_buff *skb, u16 vid); | |
445 | void br_multicast_add_port(struct net_bridge_port *port); | |
446 | void br_multicast_del_port(struct net_bridge_port *port); | |
447 | void br_multicast_enable_port(struct net_bridge_port *port); | |
448 | void br_multicast_disable_port(struct net_bridge_port *port); | |
449 | void br_multicast_init(struct net_bridge *br); | |
450 | void br_multicast_open(struct net_bridge *br); | |
451 | void br_multicast_stop(struct net_bridge *br); | |
452 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
453 | struct sk_buff *skb); | |
454 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
455 | struct sk_buff *skb, struct sk_buff *skb2); | |
456 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
457 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
458 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
459 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
460 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
461 | struct net_bridge_mdb_entry * | |
462 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
463 | struct net_bridge_mdb_entry * | |
464 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
465 | struct br_ip *group); | |
466 | void br_multicast_free_pg(struct rcu_head *head); | |
467 | struct net_bridge_port_group * | |
468 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
469 | struct net_bridge_port_group __rcu *next, | |
470 | unsigned char state); | |
471 | void br_mdb_init(void); | |
472 | void br_mdb_uninit(void); | |
473 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
474 | struct br_ip *group, int type); | |
85b35269 | 475 | |
cfd56754 CW |
476 | #define mlock_dereference(X, br) \ |
477 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
478 | ||
85b35269 SS |
479 | static inline bool br_multicast_is_router(struct net_bridge *br) |
480 | { | |
481 | return br->multicast_router == 2 || | |
482 | (br->multicast_router == 1 && | |
483 | timer_pending(&br->multicast_router_timer)); | |
484 | } | |
b00589af | 485 | |
cc0fdd80 LL |
486 | static inline bool |
487 | __br_multicast_querier_exists(struct net_bridge *br, | |
488 | struct bridge_mcast_querier *querier) | |
b00589af | 489 | { |
cc0fdd80 LL |
490 | return time_is_before_jiffies(querier->delay_time) && |
491 | (br->multicast_querier || timer_pending(&querier->timer)); | |
492 | } | |
493 | ||
494 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
495 | struct ethhdr *eth) | |
496 | { | |
497 | switch (eth->h_proto) { | |
498 | case (htons(ETH_P_IP)): | |
499 | return __br_multicast_querier_exists(br, &br->ip4_querier); | |
500 | #if IS_ENABLED(CONFIG_IPV6) | |
501 | case (htons(ETH_P_IPV6)): | |
502 | return __br_multicast_querier_exists(br, &br->ip6_querier); | |
503 | #endif | |
504 | default: | |
505 | return false; | |
506 | } | |
b00589af | 507 | } |
eb1d1641 HX |
508 | #else |
509 | static inline int br_multicast_rcv(struct net_bridge *br, | |
510 | struct net_bridge_port *port, | |
06499098 VY |
511 | struct sk_buff *skb, |
512 | u16 vid) | |
eb1d1641 HX |
513 | { |
514 | return 0; | |
515 | } | |
516 | ||
517 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 518 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
519 | { |
520 | return NULL; | |
521 | } | |
522 | ||
523 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
524 | { | |
525 | } | |
526 | ||
527 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
528 | { | |
529 | } | |
530 | ||
531 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
532 | { | |
533 | } | |
534 | ||
535 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
536 | { | |
537 | } | |
538 | ||
539 | static inline void br_multicast_init(struct net_bridge *br) | |
540 | { | |
541 | } | |
542 | ||
543 | static inline void br_multicast_open(struct net_bridge *br) | |
544 | { | |
545 | } | |
546 | ||
547 | static inline void br_multicast_stop(struct net_bridge *br) | |
548 | { | |
549 | } | |
5cb5e947 HX |
550 | |
551 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
552 | struct sk_buff *skb) | |
553 | { | |
554 | } | |
555 | ||
556 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
557 | struct sk_buff *skb, | |
558 | struct sk_buff *skb2) | |
559 | { | |
560 | } | |
eb1d1641 HX |
561 | static inline bool br_multicast_is_router(struct net_bridge *br) |
562 | { | |
85b35269 | 563 | return 0; |
eb1d1641 | 564 | } |
cc0fdd80 LL |
565 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
566 | struct ethhdr *eth) | |
b00589af LL |
567 | { |
568 | return false; | |
569 | } | |
fdb184d1 RR |
570 | static inline void br_mdb_init(void) |
571 | { | |
572 | } | |
573 | static inline void br_mdb_uninit(void) | |
574 | { | |
575 | } | |
85b35269 | 576 | #endif |
eb1d1641 | 577 | |
243a2e63 VY |
578 | /* br_vlan.c */ |
579 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
580 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
581 | struct sk_buff *skb, u16 *vid); | |
582 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
583 | const struct sk_buff *skb); | |
584 | struct sk_buff *br_handle_vlan(struct net_bridge *br, | |
585 | const struct net_port_vlans *v, | |
586 | struct sk_buff *skb); | |
587 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
588 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
589 | void br_vlan_flush(struct net_bridge *br); | |
2b292fb4 | 590 | bool br_vlan_find(struct net_bridge *br, u16 vid); |
348662a1 JP |
591 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
592 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); | |
593 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
594 | void nbp_vlan_flush(struct net_bridge_port *port); | |
595 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
a37b85c9 VY |
596 | |
597 | static inline struct net_port_vlans *br_get_vlan_info( | |
598 | const struct net_bridge *br) | |
599 | { | |
1690be63 | 600 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
601 | } |
602 | ||
603 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
604 | const struct net_bridge_port *p) | |
605 | { | |
1690be63 | 606 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
607 | } |
608 | ||
609 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
610 | * skb, the vlan tag will always be present if the frame was tagged. | |
611 | */ | |
612 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
613 | { | |
614 | int err = 0; | |
615 | ||
616 | if (vlan_tx_tag_present(skb)) | |
617 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
618 | else { | |
619 | *vid = 0; | |
620 | err = -EINVAL; | |
621 | } | |
622 | ||
623 | return err; | |
624 | } | |
78851988 VY |
625 | |
626 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
627 | { | |
628 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
629 | * vid wasn't set | |
630 | */ | |
631 | smp_rmb(); | |
d1c6c708 | 632 | return v->pvid ?: VLAN_N_VID; |
78851988 VY |
633 | } |
634 | ||
243a2e63 | 635 | #else |
a37b85c9 VY |
636 | static inline bool br_allowed_ingress(struct net_bridge *br, |
637 | struct net_port_vlans *v, | |
78851988 VY |
638 | struct sk_buff *skb, |
639 | u16 *vid) | |
a37b85c9 VY |
640 | { |
641 | return true; | |
642 | } | |
643 | ||
85f46c6b VY |
644 | static inline bool br_allowed_egress(struct net_bridge *br, |
645 | const struct net_port_vlans *v, | |
646 | const struct sk_buff *skb) | |
647 | { | |
648 | return true; | |
649 | } | |
650 | ||
78851988 VY |
651 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
652 | const struct net_port_vlans *v, | |
653 | struct sk_buff *skb) | |
654 | { | |
655 | return skb; | |
656 | } | |
657 | ||
552406c4 | 658 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
659 | { |
660 | return -EOPNOTSUPP; | |
661 | } | |
662 | ||
663 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
664 | { | |
665 | return -EOPNOTSUPP; | |
666 | } | |
667 | ||
668 | static inline void br_vlan_flush(struct net_bridge *br) | |
669 | { | |
670 | } | |
671 | ||
2b292fb4 TM |
672 | static inline bool br_vlan_find(struct net_bridge *br, u16 vid) |
673 | { | |
674 | return false; | |
675 | } | |
676 | ||
552406c4 | 677 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
678 | { |
679 | return -EOPNOTSUPP; | |
680 | } | |
681 | ||
682 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
683 | { | |
684 | return -EOPNOTSUPP; | |
685 | } | |
686 | ||
687 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
688 | { | |
689 | } | |
690 | ||
a37b85c9 VY |
691 | static inline struct net_port_vlans *br_get_vlan_info( |
692 | const struct net_bridge *br) | |
693 | { | |
694 | return NULL; | |
695 | } | |
696 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
697 | const struct net_bridge_port *p) | |
698 | { | |
699 | return NULL; | |
700 | } | |
701 | ||
bc9a25d2 VY |
702 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
703 | { | |
704 | return false; | |
705 | } | |
706 | ||
78851988 | 707 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
708 | { |
709 | return 0; | |
710 | } | |
78851988 VY |
711 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
712 | { | |
713 | return VLAN_N_VID; /* Returns invalid vid */ | |
714 | } | |
243a2e63 VY |
715 | #endif |
716 | ||
1da177e4 | 717 | /* br_netfilter.c */ |
c0909713 | 718 | #ifdef CONFIG_BRIDGE_NETFILTER |
348662a1 JP |
719 | int br_netfilter_init(void); |
720 | void br_netfilter_fini(void); | |
721 | void br_netfilter_rtable_init(struct net_bridge *); | |
c0909713 SH |
722 | #else |
723 | #define br_netfilter_init() (0) | |
31a5b837 | 724 | #define br_netfilter_fini() do { } while (0) |
4adf0af6 | 725 | #define br_netfilter_rtable_init(x) |
c0909713 | 726 | #endif |
1da177e4 LT |
727 | |
728 | /* br_stp.c */ | |
348662a1 JP |
729 | void br_log_state(const struct net_bridge_port *p); |
730 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); | |
731 | void br_init_port(struct net_bridge_port *p); | |
732 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 733 | |
348662a1 JP |
734 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
735 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
736 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
737 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 738 | |
739 | ||
1da177e4 | 740 | /* br_stp_if.c */ |
348662a1 JP |
741 | void br_stp_enable_bridge(struct net_bridge *br); |
742 | void br_stp_disable_bridge(struct net_bridge *br); | |
743 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
744 | void br_stp_enable_port(struct net_bridge_port *p); | |
745 | void br_stp_disable_port(struct net_bridge_port *p); | |
746 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
747 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
748 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
749 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
750 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
751 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
752 | |
753 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 754 | struct stp_proto; |
348662a1 JP |
755 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
756 | struct net_device *dev); | |
1da177e4 LT |
757 | |
758 | /* br_stp_timer.c */ | |
348662a1 JP |
759 | void br_stp_timer_init(struct net_bridge *br); |
760 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
761 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
762 | |
763 | /* br.c */ | |
e6373c4c | 764 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
765 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
766 | #endif | |
1da177e4 | 767 | |
11dc1f36 | 768 | /* br_netlink.c */ |
149ddd83 | 769 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
770 | int br_netlink_init(void); |
771 | void br_netlink_fini(void); | |
772 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
773 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
774 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
775 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, | |
776 | u32 filter_mask); | |
11dc1f36 | 777 | |
1da177e4 LT |
778 | #ifdef CONFIG_SYSFS |
779 | /* br_sysfs_if.c */ | |
52cf25d0 | 780 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
781 | int br_sysfs_addif(struct net_bridge_port *p); |
782 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
783 | |
784 | /* br_sysfs_br.c */ | |
348662a1 JP |
785 | int br_sysfs_addbr(struct net_device *dev); |
786 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
787 | |
788 | #else | |
789 | ||
0cb2bbbe LJ |
790 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
791 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
792 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
793 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
794 | #endif /* CONFIG_SYSFS */ |
795 | ||
796 | #endif |