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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef _BR_PRIVATE_H | |
14 | #define _BR_PRIVATE_H | |
15 | ||
16 | #include <linux/netdevice.h> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
91d2c34a | 18 | #include <linux/netpoll.h> |
406818ff | 19 | #include <linux/u64_stats_sync.h> |
4adf0af6 | 20 | #include <net/route.h> |
243a2e63 | 21 | #include <linux/if_vlan.h> |
1da177e4 LT |
22 | |
23 | #define BR_HASH_BITS 8 | |
24 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
25 | ||
26 | #define BR_HOLD_TIME (1*HZ) | |
27 | ||
28 | #define BR_PORT_BITS 10 | |
29 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
243a2e63 | 30 | #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) |
1da177e4 | 31 | |
9cde0708 SH |
32 | #define BR_VERSION "2.3" |
33 | ||
515853cc | 34 | /* Control of forwarding link local multicast */ |
35 | #define BR_GROUPFWD_DEFAULT 0 | |
36 | /* Don't allow forwarding control protocols like STP and LLDP */ | |
37 | #define BR_GROUPFWD_RESTRICTED 0x4007u | |
38 | ||
9cde0708 SH |
39 | /* Path to usermode spanning tree program */ |
40 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 41 | |
1da177e4 LT |
42 | typedef struct bridge_id bridge_id; |
43 | typedef struct mac_addr mac_addr; | |
44 | typedef __u16 port_id; | |
45 | ||
46 | struct bridge_id | |
47 | { | |
48 | unsigned char prio[2]; | |
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 */ | |
90010b36 | 71 | struct bridge_mcast_own_query { |
cc0fdd80 LL |
72 | struct timer_list timer; |
73 | u32 startup_sent; | |
74 | }; | |
75 | ||
76 | /* other querier */ | |
90010b36 | 77 | struct bridge_mcast_other_query { |
cc0fdd80 LL |
78 | struct timer_list timer; |
79 | unsigned long delay_time; | |
80 | }; | |
dc4eb53a LL |
81 | |
82 | /* selected querier */ | |
83 | struct bridge_mcast_querier { | |
84 | struct br_ip addr; | |
85 | }; | |
cc0fdd80 LL |
86 | #endif |
87 | ||
243a2e63 VY |
88 | struct net_port_vlans { |
89 | u16 port_idx; | |
78851988 | 90 | u16 pvid; |
243a2e63 VY |
91 | union { |
92 | struct net_bridge_port *port; | |
93 | struct net_bridge *br; | |
94 | } parent; | |
95 | struct rcu_head rcu; | |
96 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 97 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 98 | u16 num_vlans; |
243a2e63 VY |
99 | }; |
100 | ||
1da177e4 LT |
101 | struct net_bridge_fdb_entry |
102 | { | |
103 | struct hlist_node hlist; | |
104 | struct net_bridge_port *dst; | |
105 | ||
106 | struct rcu_head rcu; | |
7cd8861a | 107 | unsigned long updated; |
108 | unsigned long used; | |
1da177e4 LT |
109 | mac_addr addr; |
110 | unsigned char is_local; | |
111 | unsigned char is_static; | |
a5642ab4 | 112 | unsigned char added_by_user; |
2ba071ec | 113 | __u16 vlan_id; |
1da177e4 LT |
114 | }; |
115 | ||
eb1d1641 HX |
116 | struct net_bridge_port_group { |
117 | struct net_bridge_port *port; | |
e8051688 | 118 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
119 | struct hlist_node mglist; |
120 | struct rcu_head rcu; | |
121 | struct timer_list timer; | |
8ef2a9a5 | 122 | struct br_ip addr; |
ccb1c31a | 123 | unsigned char state; |
eb1d1641 HX |
124 | }; |
125 | ||
126 | struct net_bridge_mdb_entry | |
127 | { | |
128 | struct hlist_node hlist[2]; | |
eb1d1641 | 129 | struct net_bridge *br; |
e8051688 | 130 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
131 | struct rcu_head rcu; |
132 | struct timer_list timer; | |
8ef2a9a5 | 133 | struct br_ip addr; |
8a870178 | 134 | bool mglist; |
eb1d1641 HX |
135 | }; |
136 | ||
137 | struct net_bridge_mdb_htable | |
138 | { | |
139 | struct hlist_head *mhash; | |
140 | struct rcu_head rcu; | |
141 | struct net_bridge_mdb_htable *old; | |
142 | u32 size; | |
143 | u32 max; | |
144 | u32 secret; | |
145 | u32 ver; | |
146 | }; | |
147 | ||
1da177e4 LT |
148 | struct net_bridge_port |
149 | { | |
150 | struct net_bridge *br; | |
151 | struct net_device *dev; | |
152 | struct list_head list; | |
153 | ||
154 | /* STP */ | |
155 | u8 priority; | |
156 | u8 state; | |
157 | u16 port_no; | |
158 | unsigned char topology_change_ack; | |
159 | unsigned char config_pending; | |
160 | port_id port_id; | |
161 | port_id designated_port; | |
162 | bridge_id designated_root; | |
163 | bridge_id designated_bridge; | |
164 | u32 path_cost; | |
165 | u32 designated_cost; | |
0c03150e | 166 | unsigned long designated_age; |
1da177e4 LT |
167 | |
168 | struct timer_list forward_delay_timer; | |
169 | struct timer_list hold_timer; | |
170 | struct timer_list message_age_timer; | |
171 | struct kobject kobj; | |
172 | struct rcu_head rcu; | |
3982d3d2 FA |
173 | |
174 | unsigned long flags; | |
175 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 176 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 177 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 178 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 179 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 180 | #define BR_LEARNING 0x00000020 |
867a5943 | 181 | #define BR_FLOOD 0x00000040 |
e028e4b8 | 182 | #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) |
f3a6ddf1 | 183 | #define BR_PROMISC 0x00000080 |
eb1d1641 HX |
184 | |
185 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
90010b36 | 186 | struct bridge_mcast_own_query ip4_own_query; |
cc0fdd80 | 187 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 188 | struct bridge_mcast_own_query ip6_own_query; |
cc0fdd80 | 189 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
190 | unsigned char multicast_router; |
191 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
192 | struct hlist_head mglist; |
193 | struct hlist_node rlist; | |
194 | #endif | |
e0f43752 SA |
195 | |
196 | #ifdef CONFIG_SYSFS | |
197 | char sysfs_name[IFNAMSIZ]; | |
198 | #endif | |
91d2c34a HX |
199 | |
200 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
201 | struct netpoll *np; | |
202 | #endif | |
243a2e63 VY |
203 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
204 | struct net_port_vlans __rcu *vlan_info; | |
205 | #endif | |
1da177e4 LT |
206 | }; |
207 | ||
e028e4b8 | 208 | #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
f3a6ddf1 | 209 | #define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
e028e4b8 | 210 | |
f350a0a8 JP |
211 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
212 | ||
b5ed54e9 | 213 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
214 | { | |
716ec052 | 215 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 216 | } |
217 | ||
1fb1754a | 218 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 219 | { |
ec1e5610 ED |
220 | return br_port_exists(dev) ? |
221 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 222 | } |
223 | ||
1da177e4 LT |
224 | struct net_bridge |
225 | { | |
226 | spinlock_t lock; | |
227 | struct list_head port_list; | |
228 | struct net_device *dev; | |
14bb4789 | 229 | |
8f84985f | 230 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
231 | spinlock_t hash_lock; |
232 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
233 | #ifdef CONFIG_BRIDGE_NETFILTER |
234 | struct rtable fake_rtable; | |
4df53d8b PM |
235 | bool nf_call_iptables; |
236 | bool nf_call_ip6tables; | |
237 | bool nf_call_arptables; | |
4adf0af6 | 238 | #endif |
515853cc | 239 | u16 group_fwd_mask; |
240 | ||
1da177e4 LT |
241 | /* STP */ |
242 | bridge_id designated_root; | |
243 | bridge_id bridge_id; | |
244 | u32 root_path_cost; | |
245 | unsigned long max_age; | |
246 | unsigned long hello_time; | |
247 | unsigned long forward_delay; | |
248 | unsigned long bridge_max_age; | |
249 | unsigned long ageing_time; | |
250 | unsigned long bridge_hello_time; | |
251 | unsigned long bridge_forward_delay; | |
252 | ||
fda93d92 | 253 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 254 | u16 root_port; |
9cde0708 SH |
255 | |
256 | enum { | |
257 | BR_NO_STP, /* no spanning tree */ | |
258 | BR_KERNEL_STP, /* old STP in kernel */ | |
259 | BR_USER_STP, /* new RSTP in userspace */ | |
260 | } stp_enabled; | |
261 | ||
1da177e4 LT |
262 | unsigned char topology_change; |
263 | unsigned char topology_change_detected; | |
264 | ||
eb1d1641 HX |
265 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
266 | unsigned char multicast_router; | |
267 | ||
268 | u8 multicast_disabled:1; | |
c5c23260 | 269 | u8 multicast_querier:1; |
1c8ad5bf | 270 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
271 | |
272 | u32 hash_elasticity; | |
273 | u32 hash_max; | |
274 | ||
275 | u32 multicast_last_member_count; | |
eb1d1641 HX |
276 | u32 multicast_startup_query_count; |
277 | ||
278 | unsigned long multicast_last_member_interval; | |
279 | unsigned long multicast_membership_interval; | |
280 | unsigned long multicast_querier_interval; | |
281 | unsigned long multicast_query_interval; | |
282 | unsigned long multicast_query_response_interval; | |
283 | unsigned long multicast_startup_query_interval; | |
284 | ||
285 | spinlock_t multicast_lock; | |
e8051688 | 286 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 287 | struct hlist_head router_list; |
eb1d1641 HX |
288 | |
289 | struct timer_list multicast_router_timer; | |
90010b36 LL |
290 | struct bridge_mcast_other_query ip4_other_query; |
291 | struct bridge_mcast_own_query ip4_own_query; | |
dc4eb53a | 292 | struct bridge_mcast_querier ip4_querier; |
cc0fdd80 | 293 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
294 | struct bridge_mcast_other_query ip6_other_query; |
295 | struct bridge_mcast_own_query ip6_own_query; | |
dc4eb53a | 296 | struct bridge_mcast_querier ip6_querier; |
cc0fdd80 | 297 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
298 | #endif |
299 | ||
1da177e4 LT |
300 | struct timer_list hello_timer; |
301 | struct timer_list tcn_timer; | |
302 | struct timer_list topology_change_timer; | |
303 | struct timer_list gc_timer; | |
43b98c4a | 304 | struct kobject *ifobj; |
e028e4b8 | 305 | u32 auto_cnt; |
243a2e63 VY |
306 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
307 | u8 vlan_enabled; | |
308 | struct net_port_vlans __rcu *vlan_info; | |
309 | #endif | |
1da177e4 LT |
310 | }; |
311 | ||
68b7c895 HX |
312 | struct br_input_skb_cb { |
313 | struct net_device *brdev; | |
32dec5dd | 314 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
315 | int igmp; |
316 | int mrouters_only; | |
32dec5dd | 317 | #endif |
68b7c895 HX |
318 | }; |
319 | ||
320 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
321 | ||
32dec5dd YH |
322 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
323 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
324 | #else | |
325 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
326 | #endif | |
327 | ||
28a16c97 | 328 | #define br_printk(level, br, format, args...) \ |
329 | printk(level "%s: " format, (br)->dev->name, ##args) | |
330 | ||
331 | #define br_err(__br, format, args...) \ | |
332 | br_printk(KERN_ERR, __br, format, ##args) | |
333 | #define br_warn(__br, format, args...) \ | |
334 | br_printk(KERN_WARNING, __br, format, ##args) | |
335 | #define br_notice(__br, format, args...) \ | |
336 | br_printk(KERN_NOTICE, __br, format, ##args) | |
337 | #define br_info(__br, format, args...) \ | |
338 | br_printk(KERN_INFO, __br, format, ##args) | |
339 | ||
340 | #define br_debug(br, format, args...) \ | |
341 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
342 | ||
1da177e4 LT |
343 | /* called under bridge lock */ |
344 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
345 | { | |
346 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
347 | } | |
348 | ||
1da177e4 | 349 | /* br_device.c */ |
348662a1 JP |
350 | void br_dev_setup(struct net_device *dev); |
351 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
352 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 353 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
354 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
355 | struct sk_buff *skb) | |
356 | { | |
357 | struct netpoll *np = p->np; | |
358 | ||
359 | if (np) | |
360 | netpoll_send_skb(np, skb); | |
361 | } | |
362 | ||
a8779ec1 | 363 | int br_netpoll_enable(struct net_bridge_port *p); |
348662a1 | 364 | void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 365 | #else |
9f70b0fc | 366 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
367 | struct sk_buff *skb) |
368 | { | |
369 | } | |
cfb478da | 370 | |
a8779ec1 | 371 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
91d2c34a HX |
372 | { |
373 | return 0; | |
374 | } | |
375 | ||
376 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
377 | { | |
378 | } | |
cfb478da | 379 | #endif |
1da177e4 LT |
380 | |
381 | /* br_fdb.c */ | |
348662a1 JP |
382 | int br_fdb_init(void); |
383 | void br_fdb_fini(void); | |
384 | void br_fdb_flush(struct net_bridge *br); | |
424bb9c9 TM |
385 | void br_fdb_find_delete_local(struct net_bridge *br, |
386 | const struct net_bridge_port *p, | |
387 | const unsigned char *addr, u16 vid); | |
348662a1 JP |
388 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
389 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
390 | void br_fdb_cleanup(unsigned long arg); | |
391 | void br_fdb_delete_by_port(struct net_bridge *br, | |
392 | const struct net_bridge_port *p, int do_all); | |
393 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
394 | const unsigned char *addr, __u16 vid); | |
395 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
396 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
397 | unsigned long off); | |
398 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
399 | const unsigned char *addr, u16 vid); | |
400 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
a5642ab4 | 401 | const unsigned char *addr, u16 vid, bool added_by_user); |
348662a1 JP |
402 | |
403 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
404 | struct net_device *dev, const unsigned char *addr); | |
405 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, | |
406 | const unsigned char *addr, u16 nlh_flags); | |
407 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
408 | struct net_device *dev, int idx); | |
8db24af7 VY |
409 | int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
410 | void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); | |
1da177e4 LT |
411 | |
412 | /* br_forward.c */ | |
348662a1 JP |
413 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
414 | int br_dev_queue_push_xmit(struct sk_buff *skb); | |
415 | void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 416 | struct sk_buff *skb, struct sk_buff *skb0); |
348662a1 JP |
417 | int br_forward_finish(struct sk_buff *skb); |
418 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); | |
419 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
420 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
421 | |
422 | /* br_if.c */ | |
348662a1 JP |
423 | void br_port_carrier_check(struct net_bridge_port *p); |
424 | int br_add_bridge(struct net *net, const char *name); | |
425 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
426 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
427 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
428 | int br_min_mtu(const struct net_bridge *br); | |
429 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
430 | netdev_features_t features); | |
e028e4b8 | 431 | void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
2796d0c6 | 432 | void br_manage_promisc(struct net_bridge *br); |
1da177e4 LT |
433 | |
434 | /* br_input.c */ | |
348662a1 JP |
435 | int br_handle_frame_finish(struct sk_buff *skb); |
436 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); | |
1da177e4 | 437 | |
859828c0 JP |
438 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
439 | { | |
440 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
441 | } | |
442 | ||
443 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
444 | { | |
445 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
446 | } | |
447 | ||
1da177e4 | 448 | /* br_ioctl.c */ |
348662a1 JP |
449 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
450 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
451 | void __user *arg); | |
1da177e4 | 452 | |
eb1d1641 HX |
453 | /* br_multicast.c */ |
454 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 455 | extern unsigned int br_mdb_rehash_seq; |
348662a1 | 456 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 457 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
458 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
459 | struct sk_buff *skb, u16 vid); | |
460 | void br_multicast_add_port(struct net_bridge_port *port); | |
461 | void br_multicast_del_port(struct net_bridge_port *port); | |
462 | void br_multicast_enable_port(struct net_bridge_port *port); | |
463 | void br_multicast_disable_port(struct net_bridge_port *port); | |
464 | void br_multicast_init(struct net_bridge *br); | |
465 | void br_multicast_open(struct net_bridge *br); | |
466 | void br_multicast_stop(struct net_bridge *br); | |
467 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
468 | struct sk_buff *skb); | |
469 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
470 | struct sk_buff *skb, struct sk_buff *skb2); | |
471 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
472 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
473 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
474 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
475 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
476 | struct net_bridge_mdb_entry * | |
477 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
478 | struct net_bridge_mdb_entry * | |
479 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
480 | struct br_ip *group); | |
481 | void br_multicast_free_pg(struct rcu_head *head); | |
482 | struct net_bridge_port_group * | |
483 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
484 | struct net_bridge_port_group __rcu *next, | |
485 | unsigned char state); | |
486 | void br_mdb_init(void); | |
487 | void br_mdb_uninit(void); | |
488 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
489 | struct br_ip *group, int type); | |
85b35269 | 490 | |
cfd56754 CW |
491 | #define mlock_dereference(X, br) \ |
492 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
493 | ||
85b35269 SS |
494 | static inline bool br_multicast_is_router(struct net_bridge *br) |
495 | { | |
496 | return br->multicast_router == 2 || | |
497 | (br->multicast_router == 1 && | |
498 | timer_pending(&br->multicast_router_timer)); | |
499 | } | |
b00589af | 500 | |
cc0fdd80 LL |
501 | static inline bool |
502 | __br_multicast_querier_exists(struct net_bridge *br, | |
90010b36 | 503 | struct bridge_mcast_other_query *querier) |
b00589af | 504 | { |
cc0fdd80 LL |
505 | return time_is_before_jiffies(querier->delay_time) && |
506 | (br->multicast_querier || timer_pending(&querier->timer)); | |
507 | } | |
508 | ||
509 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
510 | struct ethhdr *eth) | |
511 | { | |
512 | switch (eth->h_proto) { | |
513 | case (htons(ETH_P_IP)): | |
90010b36 | 514 | return __br_multicast_querier_exists(br, &br->ip4_other_query); |
cc0fdd80 LL |
515 | #if IS_ENABLED(CONFIG_IPV6) |
516 | case (htons(ETH_P_IPV6)): | |
90010b36 | 517 | return __br_multicast_querier_exists(br, &br->ip6_other_query); |
cc0fdd80 LL |
518 | #endif |
519 | default: | |
520 | return false; | |
521 | } | |
b00589af | 522 | } |
eb1d1641 HX |
523 | #else |
524 | static inline int br_multicast_rcv(struct net_bridge *br, | |
525 | struct net_bridge_port *port, | |
06499098 VY |
526 | struct sk_buff *skb, |
527 | u16 vid) | |
eb1d1641 HX |
528 | { |
529 | return 0; | |
530 | } | |
531 | ||
532 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 533 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
534 | { |
535 | return NULL; | |
536 | } | |
537 | ||
538 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
539 | { | |
540 | } | |
541 | ||
542 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
543 | { | |
544 | } | |
545 | ||
546 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
547 | { | |
548 | } | |
549 | ||
550 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
551 | { | |
552 | } | |
553 | ||
554 | static inline void br_multicast_init(struct net_bridge *br) | |
555 | { | |
556 | } | |
557 | ||
558 | static inline void br_multicast_open(struct net_bridge *br) | |
559 | { | |
560 | } | |
561 | ||
562 | static inline void br_multicast_stop(struct net_bridge *br) | |
563 | { | |
564 | } | |
5cb5e947 HX |
565 | |
566 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
567 | struct sk_buff *skb) | |
568 | { | |
569 | } | |
570 | ||
571 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
572 | struct sk_buff *skb, | |
573 | struct sk_buff *skb2) | |
574 | { | |
575 | } | |
eb1d1641 HX |
576 | static inline bool br_multicast_is_router(struct net_bridge *br) |
577 | { | |
85b35269 | 578 | return 0; |
eb1d1641 | 579 | } |
cc0fdd80 LL |
580 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
581 | struct ethhdr *eth) | |
b00589af LL |
582 | { |
583 | return false; | |
584 | } | |
fdb184d1 RR |
585 | static inline void br_mdb_init(void) |
586 | { | |
587 | } | |
588 | static inline void br_mdb_uninit(void) | |
589 | { | |
590 | } | |
85b35269 | 591 | #endif |
eb1d1641 | 592 | |
243a2e63 VY |
593 | /* br_vlan.c */ |
594 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
595 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
596 | struct sk_buff *skb, u16 *vid); | |
597 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
598 | const struct sk_buff *skb); | |
e0d7968a | 599 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); |
348662a1 JP |
600 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
601 | const struct net_port_vlans *v, | |
602 | struct sk_buff *skb); | |
603 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
604 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
605 | void br_vlan_flush(struct net_bridge *br); | |
2b292fb4 | 606 | bool br_vlan_find(struct net_bridge *br, u16 vid); |
348662a1 JP |
607 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
608 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); | |
609 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
610 | void nbp_vlan_flush(struct net_bridge_port *port); | |
611 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
a37b85c9 VY |
612 | |
613 | static inline struct net_port_vlans *br_get_vlan_info( | |
614 | const struct net_bridge *br) | |
615 | { | |
1690be63 | 616 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
617 | } |
618 | ||
619 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
620 | const struct net_bridge_port *p) | |
621 | { | |
1690be63 | 622 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
623 | } |
624 | ||
625 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
626 | * skb, the vlan tag will always be present if the frame was tagged. | |
627 | */ | |
628 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
629 | { | |
630 | int err = 0; | |
631 | ||
632 | if (vlan_tx_tag_present(skb)) | |
633 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
634 | else { | |
635 | *vid = 0; | |
636 | err = -EINVAL; | |
637 | } | |
638 | ||
639 | return err; | |
640 | } | |
78851988 VY |
641 | |
642 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
643 | { | |
644 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
645 | * vid wasn't set | |
646 | */ | |
647 | smp_rmb(); | |
d1c6c708 | 648 | return v->pvid ?: VLAN_N_VID; |
78851988 VY |
649 | } |
650 | ||
2796d0c6 VY |
651 | static inline int br_vlan_enabled(struct net_bridge *br) |
652 | { | |
653 | return br->vlan_enabled; | |
654 | } | |
243a2e63 | 655 | #else |
a37b85c9 VY |
656 | static inline bool br_allowed_ingress(struct net_bridge *br, |
657 | struct net_port_vlans *v, | |
78851988 VY |
658 | struct sk_buff *skb, |
659 | u16 *vid) | |
a37b85c9 VY |
660 | { |
661 | return true; | |
662 | } | |
663 | ||
85f46c6b VY |
664 | static inline bool br_allowed_egress(struct net_bridge *br, |
665 | const struct net_port_vlans *v, | |
666 | const struct sk_buff *skb) | |
667 | { | |
668 | return true; | |
669 | } | |
670 | ||
e0d7968a TM |
671 | static inline bool br_should_learn(struct net_bridge_port *p, |
672 | struct sk_buff *skb, u16 *vid) | |
673 | { | |
674 | return true; | |
675 | } | |
676 | ||
78851988 VY |
677 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
678 | const struct net_port_vlans *v, | |
679 | struct sk_buff *skb) | |
680 | { | |
681 | return skb; | |
682 | } | |
683 | ||
552406c4 | 684 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
685 | { |
686 | return -EOPNOTSUPP; | |
687 | } | |
688 | ||
689 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
690 | { | |
691 | return -EOPNOTSUPP; | |
692 | } | |
693 | ||
694 | static inline void br_vlan_flush(struct net_bridge *br) | |
695 | { | |
696 | } | |
697 | ||
2b292fb4 TM |
698 | static inline bool br_vlan_find(struct net_bridge *br, u16 vid) |
699 | { | |
700 | return false; | |
701 | } | |
702 | ||
552406c4 | 703 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
704 | { |
705 | return -EOPNOTSUPP; | |
706 | } | |
707 | ||
708 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
709 | { | |
710 | return -EOPNOTSUPP; | |
711 | } | |
712 | ||
713 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
714 | { | |
715 | } | |
716 | ||
a37b85c9 VY |
717 | static inline struct net_port_vlans *br_get_vlan_info( |
718 | const struct net_bridge *br) | |
719 | { | |
720 | return NULL; | |
721 | } | |
722 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
723 | const struct net_bridge_port *p) | |
724 | { | |
725 | return NULL; | |
726 | } | |
727 | ||
bc9a25d2 VY |
728 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
729 | { | |
730 | return false; | |
731 | } | |
732 | ||
78851988 | 733 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
734 | { |
735 | return 0; | |
736 | } | |
78851988 VY |
737 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
738 | { | |
739 | return VLAN_N_VID; /* Returns invalid vid */ | |
740 | } | |
2796d0c6 | 741 | |
d4f0e095 | 742 | static inline int br_vlan_enabled(struct net_bridge *br) |
2796d0c6 VY |
743 | { |
744 | return 0; | |
745 | } | |
243a2e63 VY |
746 | #endif |
747 | ||
1da177e4 | 748 | /* br_netfilter.c */ |
c0909713 | 749 | #ifdef CONFIG_BRIDGE_NETFILTER |
348662a1 JP |
750 | int br_netfilter_init(void); |
751 | void br_netfilter_fini(void); | |
752 | void br_netfilter_rtable_init(struct net_bridge *); | |
c0909713 SH |
753 | #else |
754 | #define br_netfilter_init() (0) | |
31a5b837 | 755 | #define br_netfilter_fini() do { } while (0) |
4adf0af6 | 756 | #define br_netfilter_rtable_init(x) |
c0909713 | 757 | #endif |
1da177e4 LT |
758 | |
759 | /* br_stp.c */ | |
348662a1 JP |
760 | void br_log_state(const struct net_bridge_port *p); |
761 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); | |
762 | void br_init_port(struct net_bridge_port *p); | |
763 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 764 | |
348662a1 JP |
765 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
766 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
767 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
768 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 769 | |
770 | ||
1da177e4 | 771 | /* br_stp_if.c */ |
348662a1 JP |
772 | void br_stp_enable_bridge(struct net_bridge *br); |
773 | void br_stp_disable_bridge(struct net_bridge *br); | |
774 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
775 | void br_stp_enable_port(struct net_bridge_port *p); | |
776 | void br_stp_disable_port(struct net_bridge_port *p); | |
777 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
778 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
779 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
780 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
781 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
782 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
783 | |
784 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 785 | struct stp_proto; |
348662a1 JP |
786 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
787 | struct net_device *dev); | |
1da177e4 LT |
788 | |
789 | /* br_stp_timer.c */ | |
348662a1 JP |
790 | void br_stp_timer_init(struct net_bridge *br); |
791 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
792 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
793 | |
794 | /* br.c */ | |
e6373c4c | 795 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
796 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
797 | #endif | |
1da177e4 | 798 | |
11dc1f36 | 799 | /* br_netlink.c */ |
149ddd83 | 800 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
801 | int br_netlink_init(void); |
802 | void br_netlink_fini(void); | |
803 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
804 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
805 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
806 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, | |
807 | u32 filter_mask); | |
11dc1f36 | 808 | |
1da177e4 LT |
809 | #ifdef CONFIG_SYSFS |
810 | /* br_sysfs_if.c */ | |
52cf25d0 | 811 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
812 | int br_sysfs_addif(struct net_bridge_port *p); |
813 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
814 | |
815 | /* br_sysfs_br.c */ | |
348662a1 JP |
816 | int br_sysfs_addbr(struct net_device *dev); |
817 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
818 | |
819 | #else | |
820 | ||
0cb2bbbe LJ |
821 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
822 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
823 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
824 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
825 | #endif /* CONFIG_SYSFS */ |
826 | ||
827 | #endif |