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