Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef _BR_PRIVATE_H | |
14 | #define _BR_PRIVATE_H | |
15 | ||
16 | #include <linux/netdevice.h> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
91d2c34a | 18 | #include <linux/netpoll.h> |
406818ff | 19 | #include <linux/u64_stats_sync.h> |
4adf0af6 | 20 | #include <net/route.h> |
243a2e63 | 21 | #include <linux/if_vlan.h> |
1da177e4 LT |
22 | |
23 | #define BR_HASH_BITS 8 | |
24 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
25 | ||
26 | #define BR_HOLD_TIME (1*HZ) | |
27 | ||
28 | #define BR_PORT_BITS 10 | |
29 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
243a2e63 | 30 | #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) |
1da177e4 | 31 | |
9cde0708 SH |
32 | #define BR_VERSION "2.3" |
33 | ||
515853cc | 34 | /* Control of forwarding link local multicast */ |
35 | #define BR_GROUPFWD_DEFAULT 0 | |
36 | /* Don't allow forwarding control protocols like STP and LLDP */ | |
37 | #define BR_GROUPFWD_RESTRICTED 0x4007u | |
f2808d22 TM |
38 | /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ |
39 | #define BR_GROUPFWD_8021AD 0xB801u | |
515853cc | 40 | |
9cde0708 SH |
41 | /* Path to usermode spanning tree program */ |
42 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 43 | |
1da177e4 LT |
44 | typedef struct bridge_id bridge_id; |
45 | typedef struct mac_addr mac_addr; | |
46 | typedef __u16 port_id; | |
47 | ||
48 | struct bridge_id | |
49 | { | |
50 | unsigned char prio[2]; | |
e5a727f6 | 51 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
52 | }; |
53 | ||
54 | struct mac_addr | |
55 | { | |
e5a727f6 | 56 | unsigned char addr[ETH_ALEN]; |
1da177e4 LT |
57 | }; |
58 | ||
cc0fdd80 LL |
59 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
60 | /* our own querier */ | |
90010b36 | 61 | struct bridge_mcast_own_query { |
cc0fdd80 LL |
62 | struct timer_list timer; |
63 | u32 startup_sent; | |
64 | }; | |
65 | ||
66 | /* other querier */ | |
90010b36 | 67 | struct bridge_mcast_other_query { |
cc0fdd80 LL |
68 | struct timer_list timer; |
69 | unsigned long delay_time; | |
70 | }; | |
dc4eb53a LL |
71 | |
72 | /* selected querier */ | |
73 | struct bridge_mcast_querier { | |
74 | struct br_ip addr; | |
2cd41431 | 75 | struct net_bridge_port __rcu *port; |
dc4eb53a | 76 | }; |
cc0fdd80 LL |
77 | #endif |
78 | ||
243a2e63 VY |
79 | struct net_port_vlans { |
80 | u16 port_idx; | |
78851988 | 81 | u16 pvid; |
243a2e63 VY |
82 | union { |
83 | struct net_bridge_port *port; | |
84 | struct net_bridge *br; | |
85 | } parent; | |
86 | struct rcu_head rcu; | |
87 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 88 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 89 | u16 num_vlans; |
243a2e63 VY |
90 | }; |
91 | ||
1da177e4 LT |
92 | struct net_bridge_fdb_entry |
93 | { | |
94 | struct hlist_node hlist; | |
95 | struct net_bridge_port *dst; | |
96 | ||
97 | struct rcu_head rcu; | |
7cd8861a | 98 | unsigned long updated; |
99 | unsigned long used; | |
1da177e4 LT |
100 | mac_addr addr; |
101 | unsigned char is_local; | |
102 | unsigned char is_static; | |
a5642ab4 | 103 | unsigned char added_by_user; |
2ba071ec | 104 | __u16 vlan_id; |
1da177e4 LT |
105 | }; |
106 | ||
eb1d1641 HX |
107 | struct net_bridge_port_group { |
108 | struct net_bridge_port *port; | |
e8051688 | 109 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
110 | struct hlist_node mglist; |
111 | struct rcu_head rcu; | |
112 | struct timer_list timer; | |
8ef2a9a5 | 113 | struct br_ip addr; |
ccb1c31a | 114 | unsigned char state; |
eb1d1641 HX |
115 | }; |
116 | ||
117 | struct net_bridge_mdb_entry | |
118 | { | |
119 | struct hlist_node hlist[2]; | |
eb1d1641 | 120 | struct net_bridge *br; |
e8051688 | 121 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
122 | struct rcu_head rcu; |
123 | struct timer_list timer; | |
8ef2a9a5 | 124 | struct br_ip addr; |
8a870178 | 125 | bool mglist; |
eb1d1641 HX |
126 | }; |
127 | ||
128 | struct net_bridge_mdb_htable | |
129 | { | |
130 | struct hlist_head *mhash; | |
131 | struct rcu_head rcu; | |
132 | struct net_bridge_mdb_htable *old; | |
133 | u32 size; | |
134 | u32 max; | |
135 | u32 secret; | |
136 | u32 ver; | |
137 | }; | |
138 | ||
1da177e4 LT |
139 | struct net_bridge_port |
140 | { | |
141 | struct net_bridge *br; | |
142 | struct net_device *dev; | |
143 | struct list_head list; | |
144 | ||
145 | /* STP */ | |
146 | u8 priority; | |
147 | u8 state; | |
148 | u16 port_no; | |
149 | unsigned char topology_change_ack; | |
150 | unsigned char config_pending; | |
151 | port_id port_id; | |
152 | port_id designated_port; | |
153 | bridge_id designated_root; | |
154 | bridge_id designated_bridge; | |
155 | u32 path_cost; | |
156 | u32 designated_cost; | |
0c03150e | 157 | unsigned long designated_age; |
1da177e4 LT |
158 | |
159 | struct timer_list forward_delay_timer; | |
160 | struct timer_list hold_timer; | |
161 | struct timer_list message_age_timer; | |
162 | struct kobject kobj; | |
163 | struct rcu_head rcu; | |
3982d3d2 FA |
164 | |
165 | unsigned long flags; | |
166 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 167 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 168 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 169 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 170 | #define BR_ADMIN_COST 0x00000010 |
9ba18891 | 171 | #define BR_LEARNING 0x00000020 |
867a5943 | 172 | #define BR_FLOOD 0x00000040 |
e028e4b8 | 173 | #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) |
f3a6ddf1 | 174 | #define BR_PROMISC 0x00000080 |
eb1d1641 HX |
175 | |
176 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
90010b36 | 177 | struct bridge_mcast_own_query ip4_own_query; |
cc0fdd80 | 178 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 179 | struct bridge_mcast_own_query ip6_own_query; |
cc0fdd80 | 180 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
181 | unsigned char multicast_router; |
182 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
183 | struct hlist_head mglist; |
184 | struct hlist_node rlist; | |
185 | #endif | |
e0f43752 SA |
186 | |
187 | #ifdef CONFIG_SYSFS | |
188 | char sysfs_name[IFNAMSIZ]; | |
189 | #endif | |
91d2c34a HX |
190 | |
191 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
192 | struct netpoll *np; | |
193 | #endif | |
243a2e63 VY |
194 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
195 | struct net_port_vlans __rcu *vlan_info; | |
196 | #endif | |
1da177e4 LT |
197 | }; |
198 | ||
e028e4b8 | 199 | #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
f3a6ddf1 | 200 | #define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
e028e4b8 | 201 | |
f350a0a8 JP |
202 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
203 | ||
b5ed54e9 | 204 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
205 | { | |
716ec052 | 206 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 207 | } |
208 | ||
1fb1754a | 209 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 210 | { |
ec1e5610 ED |
211 | return br_port_exists(dev) ? |
212 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 213 | } |
214 | ||
1da177e4 LT |
215 | struct net_bridge |
216 | { | |
217 | spinlock_t lock; | |
218 | struct list_head port_list; | |
219 | struct net_device *dev; | |
14bb4789 | 220 | |
8f84985f | 221 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
222 | spinlock_t hash_lock; |
223 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
224 | #ifdef CONFIG_BRIDGE_NETFILTER |
225 | struct rtable fake_rtable; | |
4df53d8b PM |
226 | bool nf_call_iptables; |
227 | bool nf_call_ip6tables; | |
228 | bool nf_call_arptables; | |
4adf0af6 | 229 | #endif |
515853cc | 230 | u16 group_fwd_mask; |
f2808d22 | 231 | u16 group_fwd_mask_required; |
515853cc | 232 | |
1da177e4 LT |
233 | /* STP */ |
234 | bridge_id designated_root; | |
235 | bridge_id bridge_id; | |
236 | u32 root_path_cost; | |
237 | unsigned long max_age; | |
238 | unsigned long hello_time; | |
239 | unsigned long forward_delay; | |
240 | unsigned long bridge_max_age; | |
241 | unsigned long ageing_time; | |
242 | unsigned long bridge_hello_time; | |
243 | unsigned long bridge_forward_delay; | |
244 | ||
fda93d92 | 245 | u8 group_addr[ETH_ALEN]; |
204177f3 | 246 | bool group_addr_set; |
1da177e4 | 247 | u16 root_port; |
9cde0708 SH |
248 | |
249 | enum { | |
250 | BR_NO_STP, /* no spanning tree */ | |
251 | BR_KERNEL_STP, /* old STP in kernel */ | |
252 | BR_USER_STP, /* new RSTP in userspace */ | |
253 | } stp_enabled; | |
254 | ||
1da177e4 LT |
255 | unsigned char topology_change; |
256 | unsigned char topology_change_detected; | |
257 | ||
eb1d1641 HX |
258 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
259 | unsigned char multicast_router; | |
260 | ||
261 | u8 multicast_disabled:1; | |
c5c23260 | 262 | u8 multicast_querier:1; |
1c8ad5bf | 263 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
264 | |
265 | u32 hash_elasticity; | |
266 | u32 hash_max; | |
267 | ||
268 | u32 multicast_last_member_count; | |
eb1d1641 HX |
269 | u32 multicast_startup_query_count; |
270 | ||
271 | unsigned long multicast_last_member_interval; | |
272 | unsigned long multicast_membership_interval; | |
273 | unsigned long multicast_querier_interval; | |
274 | unsigned long multicast_query_interval; | |
275 | unsigned long multicast_query_response_interval; | |
276 | unsigned long multicast_startup_query_interval; | |
277 | ||
278 | spinlock_t multicast_lock; | |
e8051688 | 279 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 280 | struct hlist_head router_list; |
eb1d1641 HX |
281 | |
282 | struct timer_list multicast_router_timer; | |
90010b36 LL |
283 | struct bridge_mcast_other_query ip4_other_query; |
284 | struct bridge_mcast_own_query ip4_own_query; | |
dc4eb53a | 285 | struct bridge_mcast_querier ip4_querier; |
cc0fdd80 | 286 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
287 | struct bridge_mcast_other_query ip6_other_query; |
288 | struct bridge_mcast_own_query ip6_own_query; | |
dc4eb53a | 289 | struct bridge_mcast_querier ip6_querier; |
cc0fdd80 | 290 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
291 | #endif |
292 | ||
1da177e4 LT |
293 | struct timer_list hello_timer; |
294 | struct timer_list tcn_timer; | |
295 | struct timer_list topology_change_timer; | |
296 | struct timer_list gc_timer; | |
43b98c4a | 297 | struct kobject *ifobj; |
e028e4b8 | 298 | u32 auto_cnt; |
243a2e63 VY |
299 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
300 | u8 vlan_enabled; | |
8580e211 | 301 | __be16 vlan_proto; |
243a2e63 VY |
302 | struct net_port_vlans __rcu *vlan_info; |
303 | #endif | |
1da177e4 LT |
304 | }; |
305 | ||
68b7c895 HX |
306 | struct br_input_skb_cb { |
307 | struct net_device *brdev; | |
32dec5dd | 308 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
309 | int igmp; |
310 | int mrouters_only; | |
32dec5dd | 311 | #endif |
68b7c895 HX |
312 | }; |
313 | ||
314 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
315 | ||
32dec5dd YH |
316 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
317 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
318 | #else | |
319 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
320 | #endif | |
321 | ||
28a16c97 | 322 | #define br_printk(level, br, format, args...) \ |
323 | printk(level "%s: " format, (br)->dev->name, ##args) | |
324 | ||
325 | #define br_err(__br, format, args...) \ | |
326 | br_printk(KERN_ERR, __br, format, ##args) | |
327 | #define br_warn(__br, format, args...) \ | |
328 | br_printk(KERN_WARNING, __br, format, ##args) | |
329 | #define br_notice(__br, format, args...) \ | |
330 | br_printk(KERN_NOTICE, __br, format, ##args) | |
331 | #define br_info(__br, format, args...) \ | |
332 | br_printk(KERN_INFO, __br, format, ##args) | |
333 | ||
334 | #define br_debug(br, format, args...) \ | |
335 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
336 | ||
1da177e4 LT |
337 | /* called under bridge lock */ |
338 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
339 | { | |
340 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
341 | } | |
342 | ||
1da177e4 | 343 | /* br_device.c */ |
348662a1 JP |
344 | void br_dev_setup(struct net_device *dev); |
345 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
346 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 347 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
348 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
349 | struct sk_buff *skb) | |
350 | { | |
351 | struct netpoll *np = p->np; | |
352 | ||
353 | if (np) | |
354 | netpoll_send_skb(np, skb); | |
355 | } | |
356 | ||
a8779ec1 | 357 | int br_netpoll_enable(struct net_bridge_port *p); |
348662a1 | 358 | void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 359 | #else |
9f70b0fc | 360 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
361 | struct sk_buff *skb) |
362 | { | |
363 | } | |
cfb478da | 364 | |
a8779ec1 | 365 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
91d2c34a HX |
366 | { |
367 | return 0; | |
368 | } | |
369 | ||
370 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
371 | { | |
372 | } | |
cfb478da | 373 | #endif |
1da177e4 LT |
374 | |
375 | /* br_fdb.c */ | |
348662a1 JP |
376 | int br_fdb_init(void); |
377 | void br_fdb_fini(void); | |
378 | void br_fdb_flush(struct net_bridge *br); | |
424bb9c9 TM |
379 | void br_fdb_find_delete_local(struct net_bridge *br, |
380 | const struct net_bridge_port *p, | |
381 | const unsigned char *addr, u16 vid); | |
348662a1 JP |
382 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
383 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
384 | void br_fdb_cleanup(unsigned long arg); | |
385 | void br_fdb_delete_by_port(struct net_bridge *br, | |
386 | const struct net_bridge_port *p, int do_all); | |
387 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
388 | const unsigned char *addr, __u16 vid); | |
389 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
390 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
391 | unsigned long off); | |
392 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
393 | const unsigned char *addr, u16 vid); | |
394 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
a5642ab4 | 395 | const unsigned char *addr, u16 vid, bool added_by_user); |
348662a1 JP |
396 | |
397 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
398 | struct net_device *dev, const unsigned char *addr); | |
399 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, | |
400 | const unsigned char *addr, u16 nlh_flags); | |
401 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
402 | struct net_device *dev, int idx); | |
8db24af7 VY |
403 | int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
404 | void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); | |
1da177e4 LT |
405 | |
406 | /* br_forward.c */ | |
348662a1 JP |
407 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
408 | int br_dev_queue_push_xmit(struct sk_buff *skb); | |
409 | void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 410 | struct sk_buff *skb, struct sk_buff *skb0); |
348662a1 JP |
411 | int br_forward_finish(struct sk_buff *skb); |
412 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); | |
413 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
414 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
415 | |
416 | /* br_if.c */ | |
348662a1 JP |
417 | void br_port_carrier_check(struct net_bridge_port *p); |
418 | int br_add_bridge(struct net *net, const char *name); | |
419 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
420 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
421 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
422 | int br_min_mtu(const struct net_bridge *br); | |
423 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
424 | netdev_features_t features); | |
e028e4b8 | 425 | void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
2796d0c6 | 426 | void br_manage_promisc(struct net_bridge *br); |
1da177e4 LT |
427 | |
428 | /* br_input.c */ | |
348662a1 JP |
429 | int br_handle_frame_finish(struct sk_buff *skb); |
430 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); | |
1da177e4 | 431 | |
859828c0 JP |
432 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
433 | { | |
434 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
435 | } | |
436 | ||
437 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
438 | { | |
439 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
440 | } | |
441 | ||
1da177e4 | 442 | /* br_ioctl.c */ |
348662a1 JP |
443 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
444 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
445 | void __user *arg); | |
1da177e4 | 446 | |
eb1d1641 HX |
447 | /* br_multicast.c */ |
448 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 449 | extern unsigned int br_mdb_rehash_seq; |
348662a1 | 450 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 451 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
452 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
453 | struct sk_buff *skb, u16 vid); | |
454 | void br_multicast_add_port(struct net_bridge_port *port); | |
455 | void br_multicast_del_port(struct net_bridge_port *port); | |
456 | void br_multicast_enable_port(struct net_bridge_port *port); | |
457 | void br_multicast_disable_port(struct net_bridge_port *port); | |
458 | void br_multicast_init(struct net_bridge *br); | |
459 | void br_multicast_open(struct net_bridge *br); | |
460 | void br_multicast_stop(struct net_bridge *br); | |
461 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
462 | struct sk_buff *skb); | |
463 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
464 | struct sk_buff *skb, struct sk_buff *skb2); | |
465 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
466 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
467 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
468 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
469 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
470 | struct net_bridge_mdb_entry * | |
471 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
472 | struct net_bridge_mdb_entry * | |
473 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
474 | struct br_ip *group); | |
475 | void br_multicast_free_pg(struct rcu_head *head); | |
476 | struct net_bridge_port_group * | |
477 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
478 | struct net_bridge_port_group __rcu *next, | |
479 | unsigned char state); | |
480 | void br_mdb_init(void); | |
481 | void br_mdb_uninit(void); | |
482 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
483 | struct br_ip *group, int type); | |
85b35269 | 484 | |
cfd56754 CW |
485 | #define mlock_dereference(X, br) \ |
486 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
487 | ||
85b35269 SS |
488 | static inline bool br_multicast_is_router(struct net_bridge *br) |
489 | { | |
490 | return br->multicast_router == 2 || | |
491 | (br->multicast_router == 1 && | |
492 | timer_pending(&br->multicast_router_timer)); | |
493 | } | |
b00589af | 494 | |
cc0fdd80 LL |
495 | static inline bool |
496 | __br_multicast_querier_exists(struct net_bridge *br, | |
90010b36 | 497 | struct bridge_mcast_other_query *querier) |
b00589af | 498 | { |
cc0fdd80 LL |
499 | return time_is_before_jiffies(querier->delay_time) && |
500 | (br->multicast_querier || timer_pending(&querier->timer)); | |
501 | } | |
502 | ||
503 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
504 | struct ethhdr *eth) | |
505 | { | |
506 | switch (eth->h_proto) { | |
507 | case (htons(ETH_P_IP)): | |
90010b36 | 508 | return __br_multicast_querier_exists(br, &br->ip4_other_query); |
cc0fdd80 LL |
509 | #if IS_ENABLED(CONFIG_IPV6) |
510 | case (htons(ETH_P_IPV6)): | |
90010b36 | 511 | return __br_multicast_querier_exists(br, &br->ip6_other_query); |
cc0fdd80 LL |
512 | #endif |
513 | default: | |
514 | return false; | |
515 | } | |
b00589af | 516 | } |
eb1d1641 HX |
517 | #else |
518 | static inline int br_multicast_rcv(struct net_bridge *br, | |
519 | struct net_bridge_port *port, | |
06499098 VY |
520 | struct sk_buff *skb, |
521 | u16 vid) | |
eb1d1641 HX |
522 | { |
523 | return 0; | |
524 | } | |
525 | ||
526 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 527 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
528 | { |
529 | return NULL; | |
530 | } | |
531 | ||
532 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
533 | { | |
534 | } | |
535 | ||
536 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
537 | { | |
538 | } | |
539 | ||
540 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
541 | { | |
542 | } | |
543 | ||
544 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
545 | { | |
546 | } | |
547 | ||
548 | static inline void br_multicast_init(struct net_bridge *br) | |
549 | { | |
550 | } | |
551 | ||
552 | static inline void br_multicast_open(struct net_bridge *br) | |
553 | { | |
554 | } | |
555 | ||
556 | static inline void br_multicast_stop(struct net_bridge *br) | |
557 | { | |
558 | } | |
5cb5e947 HX |
559 | |
560 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
561 | struct sk_buff *skb) | |
562 | { | |
563 | } | |
564 | ||
565 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
566 | struct sk_buff *skb, | |
567 | struct sk_buff *skb2) | |
568 | { | |
569 | } | |
eb1d1641 HX |
570 | static inline bool br_multicast_is_router(struct net_bridge *br) |
571 | { | |
85b35269 | 572 | return 0; |
eb1d1641 | 573 | } |
cc0fdd80 LL |
574 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
575 | struct ethhdr *eth) | |
b00589af LL |
576 | { |
577 | return false; | |
578 | } | |
fdb184d1 RR |
579 | static inline void br_mdb_init(void) |
580 | { | |
581 | } | |
582 | static inline void br_mdb_uninit(void) | |
583 | { | |
584 | } | |
85b35269 | 585 | #endif |
eb1d1641 | 586 | |
243a2e63 VY |
587 | /* br_vlan.c */ |
588 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
589 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
590 | struct sk_buff *skb, u16 *vid); | |
591 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
592 | const struct sk_buff *skb); | |
e0d7968a | 593 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); |
348662a1 JP |
594 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
595 | const struct net_port_vlans *v, | |
596 | struct sk_buff *skb); | |
597 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
598 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
599 | void br_vlan_flush(struct net_bridge *br); | |
2b292fb4 | 600 | bool br_vlan_find(struct net_bridge *br, u16 vid); |
204177f3 | 601 | void br_recalculate_fwd_mask(struct net_bridge *br); |
348662a1 | 602 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
204177f3 | 603 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val); |
8580e211 | 604 | void br_vlan_init(struct net_bridge *br); |
348662a1 JP |
605 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
606 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
607 | void nbp_vlan_flush(struct net_bridge_port *port); | |
608 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
a37b85c9 VY |
609 | |
610 | static inline struct net_port_vlans *br_get_vlan_info( | |
611 | const struct net_bridge *br) | |
612 | { | |
1690be63 | 613 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
614 | } |
615 | ||
616 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
617 | const struct net_bridge_port *p) | |
618 | { | |
1690be63 | 619 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
620 | } |
621 | ||
622 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
623 | * skb, the vlan tag will always be present if the frame was tagged. | |
624 | */ | |
625 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
626 | { | |
627 | int err = 0; | |
628 | ||
629 | if (vlan_tx_tag_present(skb)) | |
630 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
631 | else { | |
632 | *vid = 0; | |
633 | err = -EINVAL; | |
634 | } | |
635 | ||
636 | return err; | |
637 | } | |
78851988 VY |
638 | |
639 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
640 | { | |
641 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
642 | * vid wasn't set | |
643 | */ | |
644 | smp_rmb(); | |
d1c6c708 | 645 | return v->pvid ?: VLAN_N_VID; |
78851988 VY |
646 | } |
647 | ||
2796d0c6 VY |
648 | static inline int br_vlan_enabled(struct net_bridge *br) |
649 | { | |
650 | return br->vlan_enabled; | |
651 | } | |
243a2e63 | 652 | #else |
a37b85c9 VY |
653 | static inline bool br_allowed_ingress(struct net_bridge *br, |
654 | struct net_port_vlans *v, | |
78851988 VY |
655 | struct sk_buff *skb, |
656 | u16 *vid) | |
a37b85c9 VY |
657 | { |
658 | return true; | |
659 | } | |
660 | ||
85f46c6b VY |
661 | static inline bool br_allowed_egress(struct net_bridge *br, |
662 | const struct net_port_vlans *v, | |
663 | const struct sk_buff *skb) | |
664 | { | |
665 | return true; | |
666 | } | |
667 | ||
e0d7968a TM |
668 | static inline bool br_should_learn(struct net_bridge_port *p, |
669 | struct sk_buff *skb, u16 *vid) | |
670 | { | |
671 | return true; | |
672 | } | |
673 | ||
78851988 VY |
674 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
675 | const struct net_port_vlans *v, | |
676 | struct sk_buff *skb) | |
677 | { | |
678 | return skb; | |
679 | } | |
680 | ||
552406c4 | 681 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
682 | { |
683 | return -EOPNOTSUPP; | |
684 | } | |
685 | ||
686 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
687 | { | |
688 | return -EOPNOTSUPP; | |
689 | } | |
690 | ||
691 | static inline void br_vlan_flush(struct net_bridge *br) | |
692 | { | |
693 | } | |
694 | ||
2b292fb4 TM |
695 | static inline bool br_vlan_find(struct net_bridge *br, u16 vid) |
696 | { | |
697 | return false; | |
698 | } | |
699 | ||
204177f3 TM |
700 | static inline void br_recalculate_fwd_mask(struct net_bridge *br) |
701 | { | |
702 | } | |
703 | ||
8580e211 TM |
704 | static inline void br_vlan_init(struct net_bridge *br) |
705 | { | |
706 | } | |
707 | ||
552406c4 | 708 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
709 | { |
710 | return -EOPNOTSUPP; | |
711 | } | |
712 | ||
713 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
714 | { | |
715 | return -EOPNOTSUPP; | |
716 | } | |
717 | ||
718 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
719 | { | |
720 | } | |
721 | ||
a37b85c9 VY |
722 | static inline struct net_port_vlans *br_get_vlan_info( |
723 | const struct net_bridge *br) | |
724 | { | |
725 | return NULL; | |
726 | } | |
727 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
728 | const struct net_bridge_port *p) | |
729 | { | |
730 | return NULL; | |
731 | } | |
732 | ||
bc9a25d2 VY |
733 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
734 | { | |
735 | return false; | |
736 | } | |
737 | ||
78851988 | 738 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
739 | { |
740 | return 0; | |
741 | } | |
78851988 VY |
742 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
743 | { | |
744 | return VLAN_N_VID; /* Returns invalid vid */ | |
745 | } | |
2796d0c6 | 746 | |
d4f0e095 | 747 | static inline int br_vlan_enabled(struct net_bridge *br) |
2796d0c6 VY |
748 | { |
749 | return 0; | |
750 | } | |
243a2e63 VY |
751 | #endif |
752 | ||
1da177e4 | 753 | /* br_netfilter.c */ |
c0909713 | 754 | #ifdef CONFIG_BRIDGE_NETFILTER |
348662a1 JP |
755 | int br_netfilter_init(void); |
756 | void br_netfilter_fini(void); | |
757 | void br_netfilter_rtable_init(struct net_bridge *); | |
c0909713 SH |
758 | #else |
759 | #define br_netfilter_init() (0) | |
31a5b837 | 760 | #define br_netfilter_fini() do { } while (0) |
4adf0af6 | 761 | #define br_netfilter_rtable_init(x) |
c0909713 | 762 | #endif |
1da177e4 LT |
763 | |
764 | /* br_stp.c */ | |
348662a1 JP |
765 | void br_log_state(const struct net_bridge_port *p); |
766 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); | |
767 | void br_init_port(struct net_bridge_port *p); | |
768 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 769 | |
348662a1 JP |
770 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
771 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
772 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
773 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 774 | |
775 | ||
1da177e4 | 776 | /* br_stp_if.c */ |
348662a1 JP |
777 | void br_stp_enable_bridge(struct net_bridge *br); |
778 | void br_stp_disable_bridge(struct net_bridge *br); | |
779 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
780 | void br_stp_enable_port(struct net_bridge_port *p); | |
781 | void br_stp_disable_port(struct net_bridge_port *p); | |
782 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
783 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
784 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
785 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
786 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
787 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
788 | |
789 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 790 | struct stp_proto; |
348662a1 JP |
791 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
792 | struct net_device *dev); | |
1da177e4 LT |
793 | |
794 | /* br_stp_timer.c */ | |
348662a1 JP |
795 | void br_stp_timer_init(struct net_bridge *br); |
796 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
797 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
798 | |
799 | /* br.c */ | |
e6373c4c | 800 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
801 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
802 | #endif | |
1da177e4 | 803 | |
11dc1f36 | 804 | /* br_netlink.c */ |
149ddd83 | 805 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
806 | int br_netlink_init(void); |
807 | void br_netlink_fini(void); | |
808 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
809 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
810 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
811 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, | |
812 | u32 filter_mask); | |
11dc1f36 | 813 | |
1da177e4 LT |
814 | #ifdef CONFIG_SYSFS |
815 | /* br_sysfs_if.c */ | |
52cf25d0 | 816 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
817 | int br_sysfs_addif(struct net_bridge_port *p); |
818 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
819 | |
820 | /* br_sysfs_br.c */ | |
348662a1 JP |
821 | int br_sysfs_addbr(struct net_device *dev); |
822 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
823 | |
824 | #else | |
825 | ||
0cb2bbbe LJ |
826 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
827 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
828 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
829 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
830 | #endif /* CONFIG_SYSFS */ |
831 | ||
832 | #endif |