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]; | |
49 | unsigned char addr[6]; | |
50 | }; | |
51 | ||
52 | struct mac_addr | |
53 | { | |
54 | unsigned char addr[6]; | |
55 | }; | |
56 | ||
8ef2a9a5 YH |
57 | struct br_ip |
58 | { | |
59 | union { | |
60 | __be32 ip4; | |
dfd56b8b | 61 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
62 | struct in6_addr ip6; |
63 | #endif | |
8ef2a9a5 YH |
64 | } u; |
65 | __be16 proto; | |
b0e9a30d | 66 | __u16 vid; |
8ef2a9a5 YH |
67 | }; |
68 | ||
243a2e63 VY |
69 | struct net_port_vlans { |
70 | u16 port_idx; | |
78851988 | 71 | u16 pvid; |
243a2e63 VY |
72 | union { |
73 | struct net_bridge_port *port; | |
74 | struct net_bridge *br; | |
75 | } parent; | |
76 | struct rcu_head rcu; | |
77 | unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; | |
35e03f3a | 78 | unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; |
6cbdceeb | 79 | u16 num_vlans; |
243a2e63 VY |
80 | }; |
81 | ||
1da177e4 LT |
82 | struct net_bridge_fdb_entry |
83 | { | |
84 | struct hlist_node hlist; | |
85 | struct net_bridge_port *dst; | |
86 | ||
87 | struct rcu_head rcu; | |
7cd8861a | 88 | unsigned long updated; |
89 | unsigned long used; | |
1da177e4 LT |
90 | mac_addr addr; |
91 | unsigned char is_local; | |
92 | unsigned char is_static; | |
2ba071ec | 93 | __u16 vlan_id; |
1da177e4 LT |
94 | }; |
95 | ||
eb1d1641 HX |
96 | struct net_bridge_port_group { |
97 | struct net_bridge_port *port; | |
e8051688 | 98 | struct net_bridge_port_group __rcu *next; |
eb1d1641 HX |
99 | struct hlist_node mglist; |
100 | struct rcu_head rcu; | |
101 | struct timer_list timer; | |
8ef2a9a5 | 102 | struct br_ip addr; |
ccb1c31a | 103 | unsigned char state; |
eb1d1641 HX |
104 | }; |
105 | ||
106 | struct net_bridge_mdb_entry | |
107 | { | |
108 | struct hlist_node hlist[2]; | |
eb1d1641 | 109 | struct net_bridge *br; |
e8051688 | 110 | struct net_bridge_port_group __rcu *ports; |
eb1d1641 HX |
111 | struct rcu_head rcu; |
112 | struct timer_list timer; | |
8ef2a9a5 | 113 | struct br_ip addr; |
8a870178 | 114 | bool mglist; |
eb1d1641 HX |
115 | }; |
116 | ||
117 | struct net_bridge_mdb_htable | |
118 | { | |
119 | struct hlist_head *mhash; | |
120 | struct rcu_head rcu; | |
121 | struct net_bridge_mdb_htable *old; | |
122 | u32 size; | |
123 | u32 max; | |
124 | u32 secret; | |
125 | u32 ver; | |
126 | }; | |
127 | ||
1da177e4 LT |
128 | struct net_bridge_port |
129 | { | |
130 | struct net_bridge *br; | |
131 | struct net_device *dev; | |
132 | struct list_head list; | |
133 | ||
134 | /* STP */ | |
135 | u8 priority; | |
136 | u8 state; | |
137 | u16 port_no; | |
138 | unsigned char topology_change_ack; | |
139 | unsigned char config_pending; | |
140 | port_id port_id; | |
141 | port_id designated_port; | |
142 | bridge_id designated_root; | |
143 | bridge_id designated_bridge; | |
144 | u32 path_cost; | |
145 | u32 designated_cost; | |
0c03150e | 146 | unsigned long designated_age; |
1da177e4 LT |
147 | |
148 | struct timer_list forward_delay_timer; | |
149 | struct timer_list hold_timer; | |
150 | struct timer_list message_age_timer; | |
151 | struct kobject kobj; | |
152 | struct rcu_head rcu; | |
3982d3d2 FA |
153 | |
154 | unsigned long flags; | |
155 | #define BR_HAIRPIN_MODE 0x00000001 | |
a2e01a65 | 156 | #define BR_BPDU_GUARD 0x00000002 |
1007dd1a | 157 | #define BR_ROOT_BLOCK 0x00000004 |
c2d3babf | 158 | #define BR_MULTICAST_FAST_LEAVE 0x00000008 |
8f3359bd | 159 | #define BR_ADMIN_COST 0x00000010 |
eb1d1641 HX |
160 | |
161 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
162 | u32 multicast_startup_queries_sent; | |
163 | unsigned char multicast_router; | |
164 | struct timer_list multicast_router_timer; | |
165 | struct timer_list multicast_query_timer; | |
166 | struct hlist_head mglist; | |
167 | struct hlist_node rlist; | |
168 | #endif | |
e0f43752 SA |
169 | |
170 | #ifdef CONFIG_SYSFS | |
171 | char sysfs_name[IFNAMSIZ]; | |
172 | #endif | |
91d2c34a HX |
173 | |
174 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
175 | struct netpoll *np; | |
176 | #endif | |
243a2e63 VY |
177 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
178 | struct net_port_vlans __rcu *vlan_info; | |
179 | #endif | |
1da177e4 LT |
180 | }; |
181 | ||
f350a0a8 JP |
182 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
183 | ||
b5ed54e9 | 184 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
185 | { | |
2469ffd7 JF |
186 | struct net_bridge_port *port = |
187 | rcu_dereference_rtnl(dev->rx_handler_data); | |
188 | ||
b5ed54e9 | 189 | return br_port_exists(dev) ? port : NULL; |
190 | } | |
191 | ||
ec1e5610 | 192 | static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) |
b5ed54e9 | 193 | { |
ec1e5610 ED |
194 | return br_port_exists(dev) ? |
195 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 196 | } |
197 | ||
0eae88f3 | 198 | struct br_cpu_netstats { |
406818ff ED |
199 | u64 rx_packets; |
200 | u64 rx_bytes; | |
201 | u64 tx_packets; | |
202 | u64 tx_bytes; | |
203 | struct u64_stats_sync syncp; | |
0eae88f3 ED |
204 | }; |
205 | ||
1da177e4 LT |
206 | struct net_bridge |
207 | { | |
208 | spinlock_t lock; | |
209 | struct list_head port_list; | |
210 | struct net_device *dev; | |
14bb4789 | 211 | |
0eae88f3 | 212 | struct br_cpu_netstats __percpu *stats; |
1da177e4 LT |
213 | spinlock_t hash_lock; |
214 | struct hlist_head hash[BR_HASH_SIZE]; | |
4adf0af6 SW |
215 | #ifdef CONFIG_BRIDGE_NETFILTER |
216 | struct rtable fake_rtable; | |
4df53d8b PM |
217 | bool nf_call_iptables; |
218 | bool nf_call_ip6tables; | |
219 | bool nf_call_arptables; | |
4adf0af6 | 220 | #endif |
515853cc | 221 | u16 group_fwd_mask; |
222 | ||
1da177e4 LT |
223 | /* STP */ |
224 | bridge_id designated_root; | |
225 | bridge_id bridge_id; | |
226 | u32 root_path_cost; | |
227 | unsigned long max_age; | |
228 | unsigned long hello_time; | |
229 | unsigned long forward_delay; | |
230 | unsigned long bridge_max_age; | |
231 | unsigned long ageing_time; | |
232 | unsigned long bridge_hello_time; | |
233 | unsigned long bridge_forward_delay; | |
234 | ||
fda93d92 | 235 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 236 | u16 root_port; |
9cde0708 SH |
237 | |
238 | enum { | |
239 | BR_NO_STP, /* no spanning tree */ | |
240 | BR_KERNEL_STP, /* old STP in kernel */ | |
241 | BR_USER_STP, /* new RSTP in userspace */ | |
242 | } stp_enabled; | |
243 | ||
1da177e4 LT |
244 | unsigned char topology_change; |
245 | unsigned char topology_change_detected; | |
246 | ||
eb1d1641 HX |
247 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
248 | unsigned char multicast_router; | |
249 | ||
250 | u8 multicast_disabled:1; | |
c5c23260 | 251 | u8 multicast_querier:1; |
eb1d1641 HX |
252 | |
253 | u32 hash_elasticity; | |
254 | u32 hash_max; | |
255 | ||
256 | u32 multicast_last_member_count; | |
257 | u32 multicast_startup_queries_sent; | |
258 | u32 multicast_startup_query_count; | |
259 | ||
260 | unsigned long multicast_last_member_interval; | |
261 | unsigned long multicast_membership_interval; | |
262 | unsigned long multicast_querier_interval; | |
263 | unsigned long multicast_query_interval; | |
264 | unsigned long multicast_query_response_interval; | |
265 | unsigned long multicast_startup_query_interval; | |
266 | ||
267 | spinlock_t multicast_lock; | |
e8051688 | 268 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 269 | struct hlist_head router_list; |
eb1d1641 HX |
270 | |
271 | struct timer_list multicast_router_timer; | |
272 | struct timer_list multicast_querier_timer; | |
273 | struct timer_list multicast_query_timer; | |
274 | #endif | |
275 | ||
1da177e4 LT |
276 | struct timer_list hello_timer; |
277 | struct timer_list tcn_timer; | |
278 | struct timer_list topology_change_timer; | |
279 | struct timer_list gc_timer; | |
43b98c4a | 280 | struct kobject *ifobj; |
243a2e63 VY |
281 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
282 | u8 vlan_enabled; | |
283 | struct net_port_vlans __rcu *vlan_info; | |
284 | #endif | |
1da177e4 LT |
285 | }; |
286 | ||
68b7c895 HX |
287 | struct br_input_skb_cb { |
288 | struct net_device *brdev; | |
32dec5dd | 289 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
290 | int igmp; |
291 | int mrouters_only; | |
32dec5dd | 292 | #endif |
68b7c895 HX |
293 | }; |
294 | ||
295 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
296 | ||
32dec5dd YH |
297 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
298 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
299 | #else | |
300 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
301 | #endif | |
302 | ||
28a16c97 | 303 | #define br_printk(level, br, format, args...) \ |
304 | printk(level "%s: " format, (br)->dev->name, ##args) | |
305 | ||
306 | #define br_err(__br, format, args...) \ | |
307 | br_printk(KERN_ERR, __br, format, ##args) | |
308 | #define br_warn(__br, format, args...) \ | |
309 | br_printk(KERN_WARNING, __br, format, ##args) | |
310 | #define br_notice(__br, format, args...) \ | |
311 | br_printk(KERN_NOTICE, __br, format, ##args) | |
312 | #define br_info(__br, format, args...) \ | |
313 | br_printk(KERN_INFO, __br, format, ##args) | |
314 | ||
315 | #define br_debug(br, format, args...) \ | |
316 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
317 | ||
1da177e4 | 318 | extern struct notifier_block br_device_notifier; |
1da177e4 LT |
319 | |
320 | /* called under bridge lock */ | |
321 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
322 | { | |
323 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
324 | } | |
325 | ||
1da177e4 LT |
326 | /* br_device.c */ |
327 | extern void br_dev_setup(struct net_device *dev); | |
1ce5cce8 | 328 | extern void br_dev_delete(struct net_device *dev, struct list_head *list); |
6fef4c0c SH |
329 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
330 | struct net_device *dev); | |
cfb478da | 331 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
332 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
333 | { | |
334 | return br->dev->npinfo; | |
335 | } | |
336 | ||
337 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, | |
338 | struct sk_buff *skb) | |
339 | { | |
340 | struct netpoll *np = p->np; | |
341 | ||
342 | if (np) | |
343 | netpoll_send_skb(np, skb); | |
344 | } | |
345 | ||
47be03a2 | 346 | extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); |
91d2c34a | 347 | extern void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 348 | #else |
91d2c34a HX |
349 | static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) |
350 | { | |
351 | return NULL; | |
352 | } | |
353 | ||
9f70b0fc | 354 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
355 | struct sk_buff *skb) |
356 | { | |
357 | } | |
cfb478da | 358 | |
47be03a2 | 359 | static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
91d2c34a HX |
360 | { |
361 | return 0; | |
362 | } | |
363 | ||
364 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
365 | { | |
366 | } | |
cfb478da | 367 | #endif |
1da177e4 LT |
368 | |
369 | /* br_fdb.c */ | |
87a596e0 | 370 | extern int br_fdb_init(void); |
1da177e4 | 371 | extern void br_fdb_fini(void); |
9cf63747 | 372 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
373 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
374 | const unsigned char *newaddr); | |
43598813 | 375 | extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); |
1da177e4 LT |
376 | extern void br_fdb_cleanup(unsigned long arg); |
377 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 378 | const struct net_bridge_port *p, int do_all); |
1da177e4 | 379 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
2ba071ec VY |
380 | const unsigned char *addr, |
381 | __u16 vid); | |
da678292 | 382 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 383 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
384 | unsigned long count, unsigned long off); |
385 | extern int br_fdb_insert(struct net_bridge *br, | |
386 | struct net_bridge_port *source, | |
bc9a25d2 VY |
387 | const unsigned char *addr, |
388 | u16 vid); | |
1da177e4 LT |
389 | extern void br_fdb_update(struct net_bridge *br, |
390 | struct net_bridge_port *source, | |
2ba071ec VY |
391 | const unsigned char *addr, |
392 | u16 vid); | |
bc9a25d2 | 393 | extern int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vid); |
77162022 | 394 | |
1690be63 | 395 | extern int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], |
77162022 | 396 | struct net_device *dev, |
6b6e2725 | 397 | const unsigned char *addr); |
edc7d573 | 398 | extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], |
77162022 | 399 | struct net_device *dev, |
6b6e2725 | 400 | const unsigned char *addr, |
77162022 JF |
401 | u16 nlh_flags); |
402 | extern int br_fdb_dump(struct sk_buff *skb, | |
403 | struct netlink_callback *cb, | |
404 | struct net_device *dev, | |
405 | int idx); | |
1da177e4 LT |
406 | |
407 | /* br_forward.c */ | |
408 | extern void br_deliver(const struct net_bridge_port *to, | |
409 | struct sk_buff *skb); | |
410 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
411 | extern void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 412 | struct sk_buff *skb, struct sk_buff *skb0); |
1da177e4 | 413 | extern int br_forward_finish(struct sk_buff *skb); |
e081e1e3 | 414 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
b33084be HX |
415 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, |
416 | struct sk_buff *skb2); | |
1da177e4 LT |
417 | |
418 | /* br_if.c */ | |
269def7c | 419 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
420 | extern int br_add_bridge(struct net *net, const char *name); |
421 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 422 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
423 | extern int br_add_if(struct net_bridge *br, |
424 | struct net_device *dev); | |
425 | extern int br_del_if(struct net_bridge *br, | |
426 | struct net_device *dev); | |
427 | extern int br_min_mtu(const struct net_bridge *br); | |
c8f44aff MM |
428 | extern netdev_features_t br_features_recompute(struct net_bridge *br, |
429 | netdev_features_t features); | |
1da177e4 LT |
430 | |
431 | /* br_input.c */ | |
432 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
8a4eb573 | 433 | extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); |
1da177e4 LT |
434 | |
435 | /* br_ioctl.c */ | |
436 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 437 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 | 438 | |
eb1d1641 HX |
439 | /* br_multicast.c */ |
440 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 441 | extern unsigned int br_mdb_rehash_seq; |
eb1d1641 HX |
442 | extern int br_multicast_rcv(struct net_bridge *br, |
443 | struct net_bridge_port *port, | |
444 | struct sk_buff *skb); | |
445 | extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 446 | struct sk_buff *skb, u16 vid); |
eb1d1641 HX |
447 | extern void br_multicast_add_port(struct net_bridge_port *port); |
448 | extern void br_multicast_del_port(struct net_bridge_port *port); | |
449 | extern void br_multicast_enable_port(struct net_bridge_port *port); | |
450 | extern void br_multicast_disable_port(struct net_bridge_port *port); | |
451 | extern void br_multicast_init(struct net_bridge *br); | |
452 | extern void br_multicast_open(struct net_bridge *br); | |
453 | extern void br_multicast_stop(struct net_bridge *br); | |
5cb5e947 HX |
454 | extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, |
455 | struct sk_buff *skb); | |
456 | extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
457 | struct sk_buff *skb, struct sk_buff *skb2); | |
0909e117 HX |
458 | extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); |
459 | extern int br_multicast_set_port_router(struct net_bridge_port *p, | |
460 | unsigned long val); | |
561f1103 | 461 | extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); |
c5c23260 | 462 | extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); |
b195167f | 463 | extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); |
cfd56754 CW |
464 | extern struct net_bridge_mdb_entry *br_mdb_ip_get( |
465 | struct net_bridge_mdb_htable *mdb, | |
466 | struct br_ip *dst); | |
467 | extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, | |
468 | struct net_bridge_port *port, struct br_ip *group); | |
469 | extern void br_multicast_free_pg(struct rcu_head *head); | |
470 | extern struct net_bridge_port_group *br_multicast_new_port_group( | |
471 | struct net_bridge_port *port, | |
472 | struct br_ip *group, | |
ccb1c31a AW |
473 | struct net_bridge_port_group *next, |
474 | unsigned char state); | |
ee07c6e7 | 475 | extern void br_mdb_init(void); |
63233159 | 476 | extern void br_mdb_uninit(void); |
37a393bc CW |
477 | extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, |
478 | struct br_ip *group, int type); | |
85b35269 | 479 | |
cfd56754 CW |
480 | #define mlock_dereference(X, br) \ |
481 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
482 | ||
483 | #if IS_ENABLED(CONFIG_IPV6) | |
484 | #include <net/addrconf.h> | |
485 | static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) | |
486 | { | |
487 | if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) | |
488 | return 1; | |
489 | return 0; | |
490 | } | |
491 | #endif | |
492 | ||
85b35269 SS |
493 | static inline bool br_multicast_is_router(struct net_bridge *br) |
494 | { | |
495 | return br->multicast_router == 2 || | |
496 | (br->multicast_router == 1 && | |
497 | timer_pending(&br->multicast_router_timer)); | |
498 | } | |
eb1d1641 HX |
499 | #else |
500 | static inline int br_multicast_rcv(struct net_bridge *br, | |
501 | struct net_bridge_port *port, | |
502 | struct sk_buff *skb) | |
503 | { | |
504 | return 0; | |
505 | } | |
506 | ||
507 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 508 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
509 | { |
510 | return NULL; | |
511 | } | |
512 | ||
513 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
514 | { | |
515 | } | |
516 | ||
517 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
518 | { | |
519 | } | |
520 | ||
521 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
522 | { | |
523 | } | |
524 | ||
525 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
526 | { | |
527 | } | |
528 | ||
529 | static inline void br_multicast_init(struct net_bridge *br) | |
530 | { | |
531 | } | |
532 | ||
533 | static inline void br_multicast_open(struct net_bridge *br) | |
534 | { | |
535 | } | |
536 | ||
537 | static inline void br_multicast_stop(struct net_bridge *br) | |
538 | { | |
539 | } | |
5cb5e947 HX |
540 | |
541 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
542 | struct sk_buff *skb) | |
543 | { | |
544 | } | |
545 | ||
546 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
547 | struct sk_buff *skb, | |
548 | struct sk_buff *skb2) | |
549 | { | |
550 | } | |
eb1d1641 HX |
551 | static inline bool br_multicast_is_router(struct net_bridge *br) |
552 | { | |
85b35269 | 553 | return 0; |
eb1d1641 | 554 | } |
fdb184d1 RR |
555 | static inline void br_mdb_init(void) |
556 | { | |
557 | } | |
558 | static inline void br_mdb_uninit(void) | |
559 | { | |
560 | } | |
85b35269 | 561 | #endif |
eb1d1641 | 562 | |
243a2e63 VY |
563 | /* br_vlan.c */ |
564 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
a37b85c9 | 565 | extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
78851988 | 566 | struct sk_buff *skb, u16 *vid); |
85f46c6b VY |
567 | extern bool br_allowed_egress(struct net_bridge *br, |
568 | const struct net_port_vlans *v, | |
569 | const struct sk_buff *skb); | |
78851988 VY |
570 | extern struct sk_buff *br_handle_vlan(struct net_bridge *br, |
571 | const struct net_port_vlans *v, | |
572 | struct sk_buff *skb); | |
552406c4 | 573 | extern int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); |
243a2e63 VY |
574 | extern int br_vlan_delete(struct net_bridge *br, u16 vid); |
575 | extern void br_vlan_flush(struct net_bridge *br); | |
576 | extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); | |
552406c4 | 577 | extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
243a2e63 VY |
578 | extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); |
579 | extern void nbp_vlan_flush(struct net_bridge_port *port); | |
bc9a25d2 | 580 | extern bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); |
a37b85c9 VY |
581 | |
582 | static inline struct net_port_vlans *br_get_vlan_info( | |
583 | const struct net_bridge *br) | |
584 | { | |
1690be63 | 585 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
586 | } |
587 | ||
588 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
589 | const struct net_bridge_port *p) | |
590 | { | |
1690be63 | 591 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
592 | } |
593 | ||
594 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
595 | * skb, the vlan tag will always be present if the frame was tagged. | |
596 | */ | |
597 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
598 | { | |
599 | int err = 0; | |
600 | ||
601 | if (vlan_tx_tag_present(skb)) | |
602 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
603 | else { | |
604 | *vid = 0; | |
605 | err = -EINVAL; | |
606 | } | |
607 | ||
608 | return err; | |
609 | } | |
78851988 VY |
610 | |
611 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
612 | { | |
613 | /* Return just the VID if it is set, or VLAN_N_VID (invalid vid) if | |
614 | * vid wasn't set | |
615 | */ | |
616 | smp_rmb(); | |
617 | return (v->pvid & VLAN_TAG_PRESENT) ? | |
618 | (v->pvid & ~VLAN_TAG_PRESENT) : | |
619 | VLAN_N_VID; | |
620 | } | |
621 | ||
243a2e63 | 622 | #else |
a37b85c9 VY |
623 | static inline bool br_allowed_ingress(struct net_bridge *br, |
624 | struct net_port_vlans *v, | |
78851988 VY |
625 | struct sk_buff *skb, |
626 | u16 *vid) | |
a37b85c9 VY |
627 | { |
628 | return true; | |
629 | } | |
630 | ||
85f46c6b VY |
631 | static inline bool br_allowed_egress(struct net_bridge *br, |
632 | const struct net_port_vlans *v, | |
633 | const struct sk_buff *skb) | |
634 | { | |
635 | return true; | |
636 | } | |
637 | ||
78851988 VY |
638 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
639 | const struct net_port_vlans *v, | |
640 | struct sk_buff *skb) | |
641 | { | |
642 | return skb; | |
643 | } | |
644 | ||
552406c4 | 645 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
646 | { |
647 | return -EOPNOTSUPP; | |
648 | } | |
649 | ||
650 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
651 | { | |
652 | return -EOPNOTSUPP; | |
653 | } | |
654 | ||
655 | static inline void br_vlan_flush(struct net_bridge *br) | |
656 | { | |
657 | } | |
658 | ||
552406c4 | 659 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
660 | { |
661 | return -EOPNOTSUPP; | |
662 | } | |
663 | ||
664 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
665 | { | |
666 | return -EOPNOTSUPP; | |
667 | } | |
668 | ||
669 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
670 | { | |
671 | } | |
672 | ||
a37b85c9 VY |
673 | static inline struct net_port_vlans *br_get_vlan_info( |
674 | const struct net_bridge *br) | |
675 | { | |
676 | return NULL; | |
677 | } | |
678 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
679 | const struct net_bridge_port *p) | |
680 | { | |
681 | return NULL; | |
682 | } | |
683 | ||
bc9a25d2 VY |
684 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
685 | { | |
686 | return false; | |
687 | } | |
688 | ||
78851988 | 689 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
690 | { |
691 | return 0; | |
692 | } | |
78851988 VY |
693 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
694 | { | |
695 | return VLAN_N_VID; /* Returns invalid vid */ | |
696 | } | |
243a2e63 VY |
697 | #endif |
698 | ||
1da177e4 | 699 | /* br_netfilter.c */ |
c0909713 | 700 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
701 | extern int br_netfilter_init(void); |
702 | extern void br_netfilter_fini(void); | |
4adf0af6 | 703 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
704 | #else |
705 | #define br_netfilter_init() (0) | |
706 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 707 | #define br_netfilter_rtable_init(x) |
c0909713 | 708 | #endif |
1da177e4 LT |
709 | |
710 | /* br_stp.c */ | |
711 | extern void br_log_state(const struct net_bridge_port *p); | |
712 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 713 | u16 port_no); |
1da177e4 LT |
714 | extern void br_init_port(struct net_bridge_port *p); |
715 | extern void br_become_designated_port(struct net_bridge_port *p); | |
716 | ||
14f98f25 | 717 | extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); |
718 | extern int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
719 | extern int br_set_max_age(struct net_bridge *br, unsigned long x); | |
720 | ||
721 | ||
1da177e4 LT |
722 | /* br_stp_if.c */ |
723 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
724 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 725 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
726 | extern void br_stp_enable_port(struct net_bridge_port *p); |
727 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
edf947f1 | 728 | extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); |
4505a3ef | 729 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
730 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
731 | u16 newprio); | |
14f98f25 | 732 | extern int br_stp_set_port_priority(struct net_bridge_port *p, |
733 | unsigned long newprio); | |
734 | extern int br_stp_set_path_cost(struct net_bridge_port *p, | |
735 | unsigned long path_cost); | |
1da177e4 LT |
736 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
737 | ||
738 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
739 | struct stp_proto; |
740 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
741 | struct net_device *dev); | |
1da177e4 LT |
742 | |
743 | /* br_stp_timer.c */ | |
744 | extern void br_stp_timer_init(struct net_bridge *br); | |
745 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
746 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
747 | ||
748 | /* br.c */ | |
e6373c4c | 749 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
750 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
751 | #endif | |
1da177e4 | 752 | |
11dc1f36 | 753 | /* br_netlink.c */ |
149ddd83 | 754 | extern struct rtnl_link_ops br_link_ops; |
32fe21c0 | 755 | extern int br_netlink_init(void); |
11dc1f36 SH |
756 | extern void br_netlink_fini(void); |
757 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
e5a55a89 | 758 | extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); |
407af329 | 759 | extern int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); |
e5a55a89 | 760 | extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 761 | struct net_device *dev, u32 filter_mask); |
11dc1f36 | 762 | |
1da177e4 LT |
763 | #ifdef CONFIG_SYSFS |
764 | /* br_sysfs_if.c */ | |
52cf25d0 | 765 | extern const struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 766 | extern int br_sysfs_addif(struct net_bridge_port *p); |
e0f43752 | 767 | extern int br_sysfs_renameif(struct net_bridge_port *p); |
1da177e4 LT |
768 | |
769 | /* br_sysfs_br.c */ | |
770 | extern int br_sysfs_addbr(struct net_device *dev); | |
771 | extern void br_sysfs_delbr(struct net_device *dev); | |
772 | ||
773 | #else | |
774 | ||
0cb2bbbe LJ |
775 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
776 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
777 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
778 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
779 | #endif /* CONFIG_SYSFS */ |
780 | ||
781 | #endif |