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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef _BR_PRIVATE_H | |
14 | #define _BR_PRIVATE_H | |
15 | ||
16 | #include <linux/netdevice.h> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
91d2c34a | 18 | #include <linux/netpoll.h> |
406818ff | 19 | #include <linux/u64_stats_sync.h> |
4adf0af6 | 20 | #include <net/route.h> |
243a2e63 | 21 | #include <linux/if_vlan.h> |
1da177e4 LT |
22 | |
23 | #define BR_HASH_BITS 8 | |
24 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
25 | ||
26 | #define BR_HOLD_TIME (1*HZ) | |
27 | ||
28 | #define BR_PORT_BITS 10 | |
29 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
243a2e63 | 30 | #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) |
1da177e4 | 31 | |
9cde0708 SH |
32 | #define BR_VERSION "2.3" |
33 | ||
515853cc | 34 | /* Control of forwarding link local multicast */ |
35 | #define BR_GROUPFWD_DEFAULT 0 | |
36 | /* Don't allow forwarding control protocols like STP and LLDP */ | |
37 | #define BR_GROUPFWD_RESTRICTED 0x4007u | |
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 |
95850116 | 175 | #define BR_PROXYARP 0x00000100 |
eb1d1641 HX |
176 | |
177 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
90010b36 | 178 | struct bridge_mcast_own_query ip4_own_query; |
cc0fdd80 | 179 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 180 | struct bridge_mcast_own_query ip6_own_query; |
cc0fdd80 | 181 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
182 | unsigned char multicast_router; |
183 | struct timer_list multicast_router_timer; | |
eb1d1641 HX |
184 | struct hlist_head mglist; |
185 | struct hlist_node rlist; | |
186 | #endif | |
e0f43752 SA |
187 | |
188 | #ifdef CONFIG_SYSFS | |
189 | char sysfs_name[IFNAMSIZ]; | |
190 | #endif | |
91d2c34a HX |
191 | |
192 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
193 | struct netpoll *np; | |
194 | #endif | |
243a2e63 VY |
195 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
196 | struct net_port_vlans __rcu *vlan_info; | |
197 | #endif | |
1da177e4 LT |
198 | }; |
199 | ||
e028e4b8 | 200 | #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) |
f3a6ddf1 | 201 | #define br_promisc_port(p) ((p)->flags & BR_PROMISC) |
e028e4b8 | 202 | |
f350a0a8 JP |
203 | #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) |
204 | ||
b5ed54e9 | 205 | static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) |
206 | { | |
716ec052 | 207 | return rcu_dereference(dev->rx_handler_data); |
b5ed54e9 | 208 | } |
209 | ||
1fb1754a | 210 | static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) |
b5ed54e9 | 211 | { |
ec1e5610 ED |
212 | return br_port_exists(dev) ? |
213 | rtnl_dereference(dev->rx_handler_data) : NULL; | |
b5ed54e9 | 214 | } |
215 | ||
1da177e4 LT |
216 | struct net_bridge |
217 | { | |
218 | spinlock_t lock; | |
219 | struct list_head port_list; | |
220 | struct net_device *dev; | |
14bb4789 | 221 | |
8f84985f | 222 | struct pcpu_sw_netstats __percpu *stats; |
1da177e4 LT |
223 | spinlock_t hash_lock; |
224 | struct hlist_head hash[BR_HASH_SIZE]; | |
34666d46 | 225 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
4adf0af6 | 226 | struct rtable fake_rtable; |
4df53d8b PM |
227 | bool nf_call_iptables; |
228 | bool nf_call_ip6tables; | |
229 | bool nf_call_arptables; | |
4adf0af6 | 230 | #endif |
515853cc | 231 | u16 group_fwd_mask; |
f2808d22 | 232 | u16 group_fwd_mask_required; |
515853cc | 233 | |
1da177e4 LT |
234 | /* STP */ |
235 | bridge_id designated_root; | |
236 | bridge_id bridge_id; | |
237 | u32 root_path_cost; | |
238 | unsigned long max_age; | |
239 | unsigned long hello_time; | |
240 | unsigned long forward_delay; | |
241 | unsigned long bridge_max_age; | |
242 | unsigned long ageing_time; | |
243 | unsigned long bridge_hello_time; | |
244 | unsigned long bridge_forward_delay; | |
245 | ||
fda93d92 | 246 | u8 group_addr[ETH_ALEN]; |
204177f3 | 247 | bool group_addr_set; |
1da177e4 | 248 | u16 root_port; |
9cde0708 SH |
249 | |
250 | enum { | |
251 | BR_NO_STP, /* no spanning tree */ | |
252 | BR_KERNEL_STP, /* old STP in kernel */ | |
253 | BR_USER_STP, /* new RSTP in userspace */ | |
254 | } stp_enabled; | |
255 | ||
1da177e4 LT |
256 | unsigned char topology_change; |
257 | unsigned char topology_change_detected; | |
258 | ||
eb1d1641 HX |
259 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
260 | unsigned char multicast_router; | |
261 | ||
262 | u8 multicast_disabled:1; | |
c5c23260 | 263 | u8 multicast_querier:1; |
1c8ad5bf | 264 | u8 multicast_query_use_ifaddr:1; |
eb1d1641 HX |
265 | |
266 | u32 hash_elasticity; | |
267 | u32 hash_max; | |
268 | ||
269 | u32 multicast_last_member_count; | |
eb1d1641 HX |
270 | u32 multicast_startup_query_count; |
271 | ||
272 | unsigned long multicast_last_member_interval; | |
273 | unsigned long multicast_membership_interval; | |
274 | unsigned long multicast_querier_interval; | |
275 | unsigned long multicast_query_interval; | |
276 | unsigned long multicast_query_response_interval; | |
277 | unsigned long multicast_startup_query_interval; | |
278 | ||
279 | spinlock_t multicast_lock; | |
e8051688 | 280 | struct net_bridge_mdb_htable __rcu *mdb; |
eb1d1641 | 281 | struct hlist_head router_list; |
eb1d1641 HX |
282 | |
283 | struct timer_list multicast_router_timer; | |
90010b36 LL |
284 | struct bridge_mcast_other_query ip4_other_query; |
285 | struct bridge_mcast_own_query ip4_own_query; | |
dc4eb53a | 286 | struct bridge_mcast_querier ip4_querier; |
cc0fdd80 | 287 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
288 | struct bridge_mcast_other_query ip6_other_query; |
289 | struct bridge_mcast_own_query ip6_own_query; | |
dc4eb53a | 290 | struct bridge_mcast_querier ip6_querier; |
cc0fdd80 | 291 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
eb1d1641 HX |
292 | #endif |
293 | ||
1da177e4 LT |
294 | struct timer_list hello_timer; |
295 | struct timer_list tcn_timer; | |
296 | struct timer_list topology_change_timer; | |
297 | struct timer_list gc_timer; | |
43b98c4a | 298 | struct kobject *ifobj; |
e028e4b8 | 299 | u32 auto_cnt; |
243a2e63 VY |
300 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
301 | u8 vlan_enabled; | |
8580e211 | 302 | __be16 vlan_proto; |
96a20d9d | 303 | u16 default_pvid; |
243a2e63 VY |
304 | struct net_port_vlans __rcu *vlan_info; |
305 | #endif | |
1da177e4 LT |
306 | }; |
307 | ||
68b7c895 HX |
308 | struct br_input_skb_cb { |
309 | struct net_device *brdev; | |
93fdd47e | 310 | |
32dec5dd | 311 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
eb1d1641 HX |
312 | int igmp; |
313 | int mrouters_only; | |
32dec5dd | 314 | #endif |
93fdd47e HX |
315 | |
316 | u16 frag_max_size; | |
317 | ||
20adfa1a VY |
318 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
319 | bool vlan_filtered; | |
320 | #endif | |
68b7c895 HX |
321 | }; |
322 | ||
323 | #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) | |
324 | ||
32dec5dd YH |
325 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
326 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) | |
327 | #else | |
328 | # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) | |
329 | #endif | |
330 | ||
28a16c97 | 331 | #define br_printk(level, br, format, args...) \ |
332 | printk(level "%s: " format, (br)->dev->name, ##args) | |
333 | ||
334 | #define br_err(__br, format, args...) \ | |
335 | br_printk(KERN_ERR, __br, format, ##args) | |
336 | #define br_warn(__br, format, args...) \ | |
337 | br_printk(KERN_WARNING, __br, format, ##args) | |
338 | #define br_notice(__br, format, args...) \ | |
339 | br_printk(KERN_NOTICE, __br, format, ##args) | |
340 | #define br_info(__br, format, args...) \ | |
341 | br_printk(KERN_INFO, __br, format, ##args) | |
342 | ||
343 | #define br_debug(br, format, args...) \ | |
344 | pr_debug("%s: " format, (br)->dev->name, ##args) | |
345 | ||
1da177e4 LT |
346 | /* called under bridge lock */ |
347 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
348 | { | |
349 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
350 | } | |
351 | ||
1da177e4 | 352 | /* br_device.c */ |
348662a1 JP |
353 | void br_dev_setup(struct net_device *dev); |
354 | void br_dev_delete(struct net_device *dev, struct list_head *list); | |
355 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
cfb478da | 356 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a HX |
357 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
358 | struct sk_buff *skb) | |
359 | { | |
360 | struct netpoll *np = p->np; | |
361 | ||
362 | if (np) | |
363 | netpoll_send_skb(np, skb); | |
364 | } | |
365 | ||
a8779ec1 | 366 | int br_netpoll_enable(struct net_bridge_port *p); |
348662a1 | 367 | void br_netpoll_disable(struct net_bridge_port *p); |
cfb478da | 368 | #else |
9f70b0fc | 369 | static inline void br_netpoll_send_skb(const struct net_bridge_port *p, |
91d2c34a HX |
370 | struct sk_buff *skb) |
371 | { | |
372 | } | |
cfb478da | 373 | |
a8779ec1 | 374 | static inline int br_netpoll_enable(struct net_bridge_port *p) |
91d2c34a HX |
375 | { |
376 | return 0; | |
377 | } | |
378 | ||
379 | static inline void br_netpoll_disable(struct net_bridge_port *p) | |
380 | { | |
381 | } | |
cfb478da | 382 | #endif |
1da177e4 LT |
383 | |
384 | /* br_fdb.c */ | |
348662a1 JP |
385 | int br_fdb_init(void); |
386 | void br_fdb_fini(void); | |
387 | void br_fdb_flush(struct net_bridge *br); | |
424bb9c9 TM |
388 | void br_fdb_find_delete_local(struct net_bridge *br, |
389 | const struct net_bridge_port *p, | |
390 | const unsigned char *addr, u16 vid); | |
348662a1 JP |
391 | void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); |
392 | void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); | |
393 | void br_fdb_cleanup(unsigned long arg); | |
394 | void br_fdb_delete_by_port(struct net_bridge *br, | |
395 | const struct net_bridge_port *p, int do_all); | |
396 | struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
397 | const unsigned char *addr, __u16 vid); | |
398 | int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); | |
399 | int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, | |
400 | unsigned long off); | |
401 | int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, | |
402 | const unsigned char *addr, u16 vid); | |
403 | void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, | |
a5642ab4 | 404 | const unsigned char *addr, u16 vid, bool added_by_user); |
348662a1 JP |
405 | |
406 | int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], | |
407 | struct net_device *dev, const unsigned char *addr); | |
408 | int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, | |
409 | const unsigned char *addr, u16 nlh_flags); | |
410 | int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
5d5eacb3 | 411 | struct net_device *dev, struct net_device *fdev, int idx); |
8db24af7 VY |
412 | int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); |
413 | void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); | |
1da177e4 LT |
414 | |
415 | /* br_forward.c */ | |
348662a1 JP |
416 | void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); |
417 | int br_dev_queue_push_xmit(struct sk_buff *skb); | |
418 | void br_forward(const struct net_bridge_port *to, | |
7f7708f0 | 419 | struct sk_buff *skb, struct sk_buff *skb0); |
348662a1 JP |
420 | int br_forward_finish(struct sk_buff *skb); |
421 | void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast); | |
422 | void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, | |
423 | struct sk_buff *skb2, bool unicast); | |
1da177e4 LT |
424 | |
425 | /* br_if.c */ | |
348662a1 JP |
426 | void br_port_carrier_check(struct net_bridge_port *p); |
427 | int br_add_bridge(struct net *net, const char *name); | |
428 | int br_del_bridge(struct net *net, const char *name); | |
348662a1 JP |
429 | int br_add_if(struct net_bridge *br, struct net_device *dev); |
430 | int br_del_if(struct net_bridge *br, struct net_device *dev); | |
431 | int br_min_mtu(const struct net_bridge *br); | |
432 | netdev_features_t br_features_recompute(struct net_bridge *br, | |
433 | netdev_features_t features); | |
e028e4b8 | 434 | void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); |
2796d0c6 | 435 | void br_manage_promisc(struct net_bridge *br); |
1da177e4 LT |
436 | |
437 | /* br_input.c */ | |
348662a1 JP |
438 | int br_handle_frame_finish(struct sk_buff *skb); |
439 | rx_handler_result_t br_handle_frame(struct sk_buff **pskb); | |
1da177e4 | 440 | |
859828c0 JP |
441 | static inline bool br_rx_handler_check_rcu(const struct net_device *dev) |
442 | { | |
443 | return rcu_dereference(dev->rx_handler) == br_handle_frame; | |
444 | } | |
445 | ||
446 | static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) | |
447 | { | |
448 | return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; | |
449 | } | |
450 | ||
1da177e4 | 451 | /* br_ioctl.c */ |
348662a1 JP |
452 | int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
453 | int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, | |
454 | void __user *arg); | |
1da177e4 | 455 | |
eb1d1641 HX |
456 | /* br_multicast.c */ |
457 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING | |
2ce297fc | 458 | extern unsigned int br_mdb_rehash_seq; |
348662a1 | 459 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
394efd19 | 460 | struct sk_buff *skb, u16 vid); |
348662a1 JP |
461 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
462 | struct sk_buff *skb, u16 vid); | |
463 | void br_multicast_add_port(struct net_bridge_port *port); | |
464 | void br_multicast_del_port(struct net_bridge_port *port); | |
465 | void br_multicast_enable_port(struct net_bridge_port *port); | |
466 | void br_multicast_disable_port(struct net_bridge_port *port); | |
467 | void br_multicast_init(struct net_bridge *br); | |
468 | void br_multicast_open(struct net_bridge *br); | |
469 | void br_multicast_stop(struct net_bridge *br); | |
470 | void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
471 | struct sk_buff *skb); | |
472 | void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
473 | struct sk_buff *skb, struct sk_buff *skb2); | |
474 | int br_multicast_set_router(struct net_bridge *br, unsigned long val); | |
475 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); | |
476 | int br_multicast_toggle(struct net_bridge *br, unsigned long val); | |
477 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val); | |
478 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); | |
479 | struct net_bridge_mdb_entry * | |
480 | br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst); | |
481 | struct net_bridge_mdb_entry * | |
482 | br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port, | |
483 | struct br_ip *group); | |
484 | void br_multicast_free_pg(struct rcu_head *head); | |
485 | struct net_bridge_port_group * | |
486 | br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, | |
487 | struct net_bridge_port_group __rcu *next, | |
488 | unsigned char state); | |
489 | void br_mdb_init(void); | |
490 | void br_mdb_uninit(void); | |
491 | void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, | |
492 | struct br_ip *group, int type); | |
85b35269 | 493 | |
cfd56754 CW |
494 | #define mlock_dereference(X, br) \ |
495 | rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) | |
496 | ||
85b35269 SS |
497 | static inline bool br_multicast_is_router(struct net_bridge *br) |
498 | { | |
499 | return br->multicast_router == 2 || | |
500 | (br->multicast_router == 1 && | |
501 | timer_pending(&br->multicast_router_timer)); | |
502 | } | |
b00589af | 503 | |
cc0fdd80 LL |
504 | static inline bool |
505 | __br_multicast_querier_exists(struct net_bridge *br, | |
90010b36 | 506 | struct bridge_mcast_other_query *querier) |
b00589af | 507 | { |
cc0fdd80 LL |
508 | return time_is_before_jiffies(querier->delay_time) && |
509 | (br->multicast_querier || timer_pending(&querier->timer)); | |
510 | } | |
511 | ||
512 | static inline bool br_multicast_querier_exists(struct net_bridge *br, | |
513 | struct ethhdr *eth) | |
514 | { | |
515 | switch (eth->h_proto) { | |
516 | case (htons(ETH_P_IP)): | |
90010b36 | 517 | return __br_multicast_querier_exists(br, &br->ip4_other_query); |
cc0fdd80 LL |
518 | #if IS_ENABLED(CONFIG_IPV6) |
519 | case (htons(ETH_P_IPV6)): | |
90010b36 | 520 | return __br_multicast_querier_exists(br, &br->ip6_other_query); |
cc0fdd80 LL |
521 | #endif |
522 | default: | |
523 | return false; | |
524 | } | |
b00589af | 525 | } |
eb1d1641 HX |
526 | #else |
527 | static inline int br_multicast_rcv(struct net_bridge *br, | |
528 | struct net_bridge_port *port, | |
06499098 VY |
529 | struct sk_buff *skb, |
530 | u16 vid) | |
eb1d1641 HX |
531 | { |
532 | return 0; | |
533 | } | |
534 | ||
535 | static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, | |
fbca58a2 | 536 | struct sk_buff *skb, u16 vid) |
eb1d1641 HX |
537 | { |
538 | return NULL; | |
539 | } | |
540 | ||
541 | static inline void br_multicast_add_port(struct net_bridge_port *port) | |
542 | { | |
543 | } | |
544 | ||
545 | static inline void br_multicast_del_port(struct net_bridge_port *port) | |
546 | { | |
547 | } | |
548 | ||
549 | static inline void br_multicast_enable_port(struct net_bridge_port *port) | |
550 | { | |
551 | } | |
552 | ||
553 | static inline void br_multicast_disable_port(struct net_bridge_port *port) | |
554 | { | |
555 | } | |
556 | ||
557 | static inline void br_multicast_init(struct net_bridge *br) | |
558 | { | |
559 | } | |
560 | ||
561 | static inline void br_multicast_open(struct net_bridge *br) | |
562 | { | |
563 | } | |
564 | ||
565 | static inline void br_multicast_stop(struct net_bridge *br) | |
566 | { | |
567 | } | |
5cb5e947 HX |
568 | |
569 | static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, | |
570 | struct sk_buff *skb) | |
571 | { | |
572 | } | |
573 | ||
574 | static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, | |
575 | struct sk_buff *skb, | |
576 | struct sk_buff *skb2) | |
577 | { | |
578 | } | |
eb1d1641 HX |
579 | static inline bool br_multicast_is_router(struct net_bridge *br) |
580 | { | |
85b35269 | 581 | return 0; |
eb1d1641 | 582 | } |
cc0fdd80 LL |
583 | static inline bool br_multicast_querier_exists(struct net_bridge *br, |
584 | struct ethhdr *eth) | |
b00589af LL |
585 | { |
586 | return false; | |
587 | } | |
fdb184d1 RR |
588 | static inline void br_mdb_init(void) |
589 | { | |
590 | } | |
591 | static inline void br_mdb_uninit(void) | |
592 | { | |
593 | } | |
85b35269 | 594 | #endif |
eb1d1641 | 595 | |
243a2e63 VY |
596 | /* br_vlan.c */ |
597 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
348662a1 JP |
598 | bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, |
599 | struct sk_buff *skb, u16 *vid); | |
600 | bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v, | |
601 | const struct sk_buff *skb); | |
e0d7968a | 602 | bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); |
348662a1 JP |
603 | struct sk_buff *br_handle_vlan(struct net_bridge *br, |
604 | const struct net_port_vlans *v, | |
605 | struct sk_buff *skb); | |
606 | int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags); | |
607 | int br_vlan_delete(struct net_bridge *br, u16 vid); | |
608 | void br_vlan_flush(struct net_bridge *br); | |
2b292fb4 | 609 | bool br_vlan_find(struct net_bridge *br, u16 vid); |
204177f3 | 610 | void br_recalculate_fwd_mask(struct net_bridge *br); |
348662a1 | 611 | int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); |
204177f3 | 612 | int br_vlan_set_proto(struct net_bridge *br, unsigned long val); |
5be5a2df | 613 | int br_vlan_init(struct net_bridge *br); |
96a20d9d | 614 | int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val); |
348662a1 JP |
615 | int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags); |
616 | int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); | |
617 | void nbp_vlan_flush(struct net_bridge_port *port); | |
618 | bool nbp_vlan_find(struct net_bridge_port *port, u16 vid); | |
5be5a2df | 619 | int nbp_vlan_init(struct net_bridge_port *port); |
a37b85c9 VY |
620 | |
621 | static inline struct net_port_vlans *br_get_vlan_info( | |
622 | const struct net_bridge *br) | |
623 | { | |
1690be63 | 624 | return rcu_dereference_rtnl(br->vlan_info); |
a37b85c9 VY |
625 | } |
626 | ||
627 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
628 | const struct net_bridge_port *p) | |
629 | { | |
1690be63 | 630 | return rcu_dereference_rtnl(p->vlan_info); |
a37b85c9 VY |
631 | } |
632 | ||
633 | /* Since bridge now depends on 8021Q module, but the time bridge sees the | |
634 | * skb, the vlan tag will always be present if the frame was tagged. | |
635 | */ | |
636 | static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) | |
637 | { | |
638 | int err = 0; | |
639 | ||
640 | if (vlan_tx_tag_present(skb)) | |
641 | *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; | |
642 | else { | |
643 | *vid = 0; | |
644 | err = -EINVAL; | |
645 | } | |
646 | ||
647 | return err; | |
648 | } | |
78851988 VY |
649 | |
650 | static inline u16 br_get_pvid(const struct net_port_vlans *v) | |
651 | { | |
5be5a2df VY |
652 | if (!v) |
653 | return 0; | |
654 | ||
78851988 | 655 | smp_rmb(); |
3df6bf45 | 656 | return v->pvid; |
78851988 VY |
657 | } |
658 | ||
2796d0c6 VY |
659 | static inline int br_vlan_enabled(struct net_bridge *br) |
660 | { | |
661 | return br->vlan_enabled; | |
662 | } | |
243a2e63 | 663 | #else |
a37b85c9 VY |
664 | static inline bool br_allowed_ingress(struct net_bridge *br, |
665 | struct net_port_vlans *v, | |
78851988 VY |
666 | struct sk_buff *skb, |
667 | u16 *vid) | |
a37b85c9 VY |
668 | { |
669 | return true; | |
670 | } | |
671 | ||
85f46c6b VY |
672 | static inline bool br_allowed_egress(struct net_bridge *br, |
673 | const struct net_port_vlans *v, | |
674 | const struct sk_buff *skb) | |
675 | { | |
676 | return true; | |
677 | } | |
678 | ||
e0d7968a TM |
679 | static inline bool br_should_learn(struct net_bridge_port *p, |
680 | struct sk_buff *skb, u16 *vid) | |
681 | { | |
682 | return true; | |
683 | } | |
684 | ||
78851988 VY |
685 | static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, |
686 | const struct net_port_vlans *v, | |
687 | struct sk_buff *skb) | |
688 | { | |
689 | return skb; | |
690 | } | |
691 | ||
552406c4 | 692 | static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) |
243a2e63 VY |
693 | { |
694 | return -EOPNOTSUPP; | |
695 | } | |
696 | ||
697 | static inline int br_vlan_delete(struct net_bridge *br, u16 vid) | |
698 | { | |
699 | return -EOPNOTSUPP; | |
700 | } | |
701 | ||
702 | static inline void br_vlan_flush(struct net_bridge *br) | |
703 | { | |
704 | } | |
705 | ||
2b292fb4 TM |
706 | static inline bool br_vlan_find(struct net_bridge *br, u16 vid) |
707 | { | |
708 | return false; | |
709 | } | |
710 | ||
204177f3 TM |
711 | static inline void br_recalculate_fwd_mask(struct net_bridge *br) |
712 | { | |
713 | } | |
714 | ||
5be5a2df | 715 | static inline int br_vlan_init(struct net_bridge *br) |
8580e211 | 716 | { |
5be5a2df | 717 | return 0; |
8580e211 TM |
718 | } |
719 | ||
552406c4 | 720 | static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) |
243a2e63 VY |
721 | { |
722 | return -EOPNOTSUPP; | |
723 | } | |
724 | ||
725 | static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) | |
726 | { | |
727 | return -EOPNOTSUPP; | |
728 | } | |
729 | ||
730 | static inline void nbp_vlan_flush(struct net_bridge_port *port) | |
731 | { | |
732 | } | |
733 | ||
a37b85c9 VY |
734 | static inline struct net_port_vlans *br_get_vlan_info( |
735 | const struct net_bridge *br) | |
736 | { | |
737 | return NULL; | |
738 | } | |
739 | static inline struct net_port_vlans *nbp_get_vlan_info( | |
740 | const struct net_bridge_port *p) | |
741 | { | |
742 | return NULL; | |
743 | } | |
744 | ||
bc9a25d2 VY |
745 | static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) |
746 | { | |
747 | return false; | |
748 | } | |
749 | ||
5be5a2df VY |
750 | static inline int nbp_vlan_init(struct net_bridge_port *port) |
751 | { | |
752 | return 0; | |
753 | } | |
754 | ||
78851988 | 755 | static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) |
a37b85c9 VY |
756 | { |
757 | return 0; | |
758 | } | |
78851988 VY |
759 | static inline u16 br_get_pvid(const struct net_port_vlans *v) |
760 | { | |
3df6bf45 | 761 | return 0; |
78851988 | 762 | } |
2796d0c6 | 763 | |
d4f0e095 | 764 | static inline int br_vlan_enabled(struct net_bridge *br) |
2796d0c6 VY |
765 | { |
766 | return 0; | |
767 | } | |
243a2e63 VY |
768 | #endif |
769 | ||
1da177e4 | 770 | /* br_netfilter.c */ |
34666d46 PNA |
771 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
772 | int br_nf_core_init(void); | |
773 | void br_nf_core_fini(void); | |
348662a1 | 774 | void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 | 775 | #else |
34666d46 PNA |
776 | static inline int br_nf_core_init(void) { return 0; } |
777 | static inline void br_nf_core_fini(void) {} | |
4adf0af6 | 778 | #define br_netfilter_rtable_init(x) |
c0909713 | 779 | #endif |
1da177e4 LT |
780 | |
781 | /* br_stp.c */ | |
348662a1 | 782 | void br_log_state(const struct net_bridge_port *p); |
775dd692 | 783 | void br_set_state(struct net_bridge_port *p, unsigned int state); |
348662a1 JP |
784 | struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); |
785 | void br_init_port(struct net_bridge_port *p); | |
786 | void br_become_designated_port(struct net_bridge_port *p); | |
1da177e4 | 787 | |
348662a1 JP |
788 | void __br_set_forward_delay(struct net_bridge *br, unsigned long t); |
789 | int br_set_forward_delay(struct net_bridge *br, unsigned long x); | |
790 | int br_set_hello_time(struct net_bridge *br, unsigned long x); | |
791 | int br_set_max_age(struct net_bridge *br, unsigned long x); | |
14f98f25 | 792 | |
793 | ||
1da177e4 | 794 | /* br_stp_if.c */ |
348662a1 JP |
795 | void br_stp_enable_bridge(struct net_bridge *br); |
796 | void br_stp_disable_bridge(struct net_bridge *br); | |
797 | void br_stp_set_enabled(struct net_bridge *br, unsigned long val); | |
798 | void br_stp_enable_port(struct net_bridge_port *p); | |
799 | void br_stp_disable_port(struct net_bridge_port *p); | |
800 | bool br_stp_recalculate_bridge_id(struct net_bridge *br); | |
801 | void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); | |
802 | void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); | |
803 | int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); | |
804 | int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); | |
805 | ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
1da177e4 LT |
806 | |
807 | /* br_stp_bpdu.c */ | |
7c85fbf0 | 808 | struct stp_proto; |
348662a1 JP |
809 | void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
810 | struct net_device *dev); | |
1da177e4 LT |
811 | |
812 | /* br_stp_timer.c */ | |
348662a1 JP |
813 | void br_stp_timer_init(struct net_bridge *br); |
814 | void br_stp_port_timer_init(struct net_bridge_port *p); | |
815 | unsigned long br_timer_value(const struct timer_list *timer); | |
1da177e4 LT |
816 | |
817 | /* br.c */ | |
e6373c4c | 818 | #if IS_ENABLED(CONFIG_ATM_LANE) |
da678292 MM |
819 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
820 | #endif | |
1da177e4 | 821 | |
11dc1f36 | 822 | /* br_netlink.c */ |
149ddd83 | 823 | extern struct rtnl_link_ops br_link_ops; |
348662a1 JP |
824 | int br_netlink_init(void); |
825 | void br_netlink_fini(void); | |
826 | void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
827 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
828 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg); | |
829 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, | |
830 | u32 filter_mask); | |
11dc1f36 | 831 | |
1da177e4 LT |
832 | #ifdef CONFIG_SYSFS |
833 | /* br_sysfs_if.c */ | |
52cf25d0 | 834 | extern const struct sysfs_ops brport_sysfs_ops; |
348662a1 JP |
835 | int br_sysfs_addif(struct net_bridge_port *p); |
836 | int br_sysfs_renameif(struct net_bridge_port *p); | |
1da177e4 LT |
837 | |
838 | /* br_sysfs_br.c */ | |
348662a1 JP |
839 | int br_sysfs_addbr(struct net_device *dev); |
840 | void br_sysfs_delbr(struct net_device *dev); | |
1da177e4 LT |
841 | |
842 | #else | |
843 | ||
0cb2bbbe LJ |
844 | static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } |
845 | static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } | |
846 | static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } | |
847 | static inline void br_sysfs_delbr(struct net_device *dev) { return; } | |
1da177e4 LT |
848 | #endif /* CONFIG_SYSFS */ |
849 | ||
850 | #endif |