This source file includes following definitions.
- br_port_get_rcu
- br_port_get_rtnl
- br_port_get_rtnl_rcu
- br_is_root_bridge
- br_vlan_is_master
- br_vlan_is_brentry
- br_vlan_should_use
- br_opt_get
- br_netpoll_send_skb
- br_netpoll_send_skb
- br_netpoll_enable
- br_netpoll_disable
- br_skb_isolated
- br_rx_handler_check_rcu
- br_rx_handler_check_rtnl
- br_port_get_check_rcu
- br_port_get_check_rtnl
- br_multicast_is_router
- __br_multicast_querier_exists
- br_multicast_querier_exists
- br_multicast_igmp_type
- br_multicast_rcv
- br_mdb_get
- br_multicast_add_port
- br_multicast_del_port
- br_multicast_enable_port
- br_multicast_disable_port
- br_multicast_init
- br_multicast_open
- br_multicast_stop
- br_multicast_dev_del
- br_multicast_flood
- br_multicast_is_router
- br_multicast_querier_exists
- br_mdb_init
- br_mdb_uninit
- br_mdb_hash_init
- br_mdb_hash_fini
- br_multicast_count
- br_multicast_init_stats
- br_multicast_uninit_stats
- br_multicast_igmp_type
- br_vlan_group
- nbp_vlan_group
- br_vlan_group_rcu
- nbp_vlan_group_rcu
- br_vlan_get_tag
- br_get_pvid
- br_allowed_ingress
- br_allowed_egress
- br_should_learn
- br_handle_vlan
- br_vlan_add
- br_vlan_delete
- br_vlan_flush
- br_recalculate_fwd_mask
- br_vlan_init
- nbp_vlan_add
- nbp_vlan_delete
- nbp_vlan_flush
- br_vlan_find
- nbp_vlan_init
- br_vlan_get_tag
- br_get_pvid
- __br_vlan_filter_toggle
- nbp_get_num_vlan_infos
- br_vlan_group
- nbp_vlan_group
- br_vlan_group_rcu
- nbp_vlan_group_rcu
- br_vlan_get_stats
- br_vlan_port_event
- br_vlan_bridge_event
- br_nf_core_init
- br_nf_core_fini
- br_sysfs_addif
- br_sysfs_renameif
- br_sysfs_addbr
- br_sysfs_delbr
- br_switchdev_frame_unmark
- nbp_switchdev_mark_set
- nbp_switchdev_frame_mark
- nbp_switchdev_allowed_egress
- br_switchdev_set_port_flag
- br_switchdev_port_vlan_add
- br_switchdev_port_vlan_del
- br_switchdev_fdb_notify
- br_switchdev_frame_unmark
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8
9 #ifndef _BR_PRIVATE_H
10 #define _BR_PRIVATE_H
11
12 #include <linux/netdevice.h>
13 #include <linux/if_bridge.h>
14 #include <linux/netpoll.h>
15 #include <linux/u64_stats_sync.h>
16 #include <net/route.h>
17 #include <net/ip6_fib.h>
18 #include <linux/if_vlan.h>
19 #include <linux/rhashtable.h>
20 #include <linux/refcount.h>
21
22 #define BR_HASH_BITS 8
23 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
24
25 #define BR_HOLD_TIME (1*HZ)
26
27 #define BR_PORT_BITS 10
28 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
29
30 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096
31
32 #define BR_VERSION "2.3"
33
34
35 #define BR_GROUPFWD_DEFAULT 0
36
37 enum {
38 BR_GROUPFWD_STP = BIT(0),
39 BR_GROUPFWD_MACPAUSE = BIT(1),
40 BR_GROUPFWD_LACP = BIT(2),
41 };
42
43 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \
44 BR_GROUPFWD_LACP)
45
46 #define BR_GROUPFWD_8021AD 0xB801u
47
48
49 #define BR_STP_PROG "/sbin/bridge-stp"
50
51 typedef struct bridge_id bridge_id;
52 typedef struct mac_addr mac_addr;
53 typedef __u16 port_id;
54
55 struct bridge_id {
56 unsigned char prio[2];
57 unsigned char addr[ETH_ALEN];
58 };
59
60 struct mac_addr {
61 unsigned char addr[ETH_ALEN];
62 };
63
64 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
65
66 struct bridge_mcast_own_query {
67 struct timer_list timer;
68 u32 startup_sent;
69 };
70
71
72 struct bridge_mcast_other_query {
73 struct timer_list timer;
74 unsigned long delay_time;
75 };
76
77
78 struct bridge_mcast_querier {
79 struct br_ip addr;
80 struct net_bridge_port __rcu *port;
81 };
82
83
84 struct bridge_mcast_stats {
85 struct br_mcast_stats mstats;
86 struct u64_stats_sync syncp;
87 };
88 #endif
89
90 struct br_vlan_stats {
91 u64 rx_bytes;
92 u64 rx_packets;
93 u64 tx_bytes;
94 u64 tx_packets;
95 struct u64_stats_sync syncp;
96 };
97
98 struct br_tunnel_info {
99 __be64 tunnel_id;
100 struct metadata_dst *tunnel_dst;
101 };
102
103
104 enum {
105 BR_VLFLAG_PER_PORT_STATS = BIT(0),
106 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
107 };
108
109
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129
130 struct net_bridge_vlan {
131 struct rhash_head vnode;
132 struct rhash_head tnode;
133 u16 vid;
134 u16 flags;
135 u16 priv_flags;
136 struct br_vlan_stats __percpu *stats;
137 union {
138 struct net_bridge *br;
139 struct net_bridge_port *port;
140 };
141 union {
142 refcount_t refcnt;
143 struct net_bridge_vlan *brvlan;
144 };
145
146 struct br_tunnel_info tinfo;
147
148 struct list_head vlist;
149
150 struct rcu_head rcu;
151 };
152
153
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163
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165
166
167 struct net_bridge_vlan_group {
168 struct rhashtable vlan_hash;
169 struct rhashtable tunnel_hash;
170 struct list_head vlan_list;
171 u16 num_vlans;
172 u16 pvid;
173 };
174
175 struct net_bridge_fdb_key {
176 mac_addr addr;
177 u16 vlan_id;
178 };
179
180 struct net_bridge_fdb_entry {
181 struct rhash_head rhnode;
182 struct net_bridge_port *dst;
183
184 struct net_bridge_fdb_key key;
185 struct hlist_node fdb_node;
186 unsigned char is_local:1,
187 is_static:1,
188 is_sticky:1,
189 added_by_user:1,
190 added_by_external_learn:1,
191 offloaded:1;
192
193
194 unsigned long updated ____cacheline_aligned_in_smp;
195 unsigned long used;
196
197 struct rcu_head rcu;
198 };
199
200 #define MDB_PG_FLAGS_PERMANENT BIT(0)
201 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
202 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
203
204 struct net_bridge_port_group {
205 struct net_bridge_port *port;
206 struct net_bridge_port_group __rcu *next;
207 struct hlist_node mglist;
208 struct rcu_head rcu;
209 struct timer_list timer;
210 struct br_ip addr;
211 unsigned char flags;
212 unsigned char eth_addr[ETH_ALEN];
213 };
214
215 struct net_bridge_mdb_entry {
216 struct rhash_head rhnode;
217 struct net_bridge *br;
218 struct net_bridge_port_group __rcu *ports;
219 struct rcu_head rcu;
220 struct timer_list timer;
221 struct br_ip addr;
222 bool host_joined;
223 struct hlist_node mdb_node;
224 };
225
226 struct net_bridge_port {
227 struct net_bridge *br;
228 struct net_device *dev;
229 struct list_head list;
230
231 unsigned long flags;
232 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
233 struct net_bridge_vlan_group __rcu *vlgrp;
234 #endif
235 struct net_bridge_port __rcu *backup_port;
236
237
238 u8 priority;
239 u8 state;
240 u16 port_no;
241 unsigned char topology_change_ack;
242 unsigned char config_pending;
243 port_id port_id;
244 port_id designated_port;
245 bridge_id designated_root;
246 bridge_id designated_bridge;
247 u32 path_cost;
248 u32 designated_cost;
249 unsigned long designated_age;
250
251 struct timer_list forward_delay_timer;
252 struct timer_list hold_timer;
253 struct timer_list message_age_timer;
254 struct kobject kobj;
255 struct rcu_head rcu;
256
257 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
258 struct bridge_mcast_own_query ip4_own_query;
259 #if IS_ENABLED(CONFIG_IPV6)
260 struct bridge_mcast_own_query ip6_own_query;
261 #endif
262 unsigned char multicast_router;
263 struct bridge_mcast_stats __percpu *mcast_stats;
264 struct timer_list multicast_router_timer;
265 struct hlist_head mglist;
266 struct hlist_node rlist;
267 #endif
268
269 #ifdef CONFIG_SYSFS
270 char sysfs_name[IFNAMSIZ];
271 #endif
272
273 #ifdef CONFIG_NET_POLL_CONTROLLER
274 struct netpoll *np;
275 #endif
276 #ifdef CONFIG_NET_SWITCHDEV
277 int offload_fwd_mark;
278 #endif
279 u16 group_fwd_mask;
280 u16 backup_redirected_cnt;
281 };
282
283 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
284
285 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
286 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
287
288 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
289 {
290 return rcu_dereference(dev->rx_handler_data);
291 }
292
293 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
294 {
295 return netif_is_bridge_port(dev) ?
296 rtnl_dereference(dev->rx_handler_data) : NULL;
297 }
298
299 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
300 {
301 return netif_is_bridge_port(dev) ?
302 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
303 }
304
305 enum net_bridge_opts {
306 BROPT_VLAN_ENABLED,
307 BROPT_VLAN_STATS_ENABLED,
308 BROPT_NF_CALL_IPTABLES,
309 BROPT_NF_CALL_IP6TABLES,
310 BROPT_NF_CALL_ARPTABLES,
311 BROPT_GROUP_ADDR_SET,
312 BROPT_MULTICAST_ENABLED,
313 BROPT_MULTICAST_QUERIER,
314 BROPT_MULTICAST_QUERY_USE_IFADDR,
315 BROPT_MULTICAST_STATS_ENABLED,
316 BROPT_HAS_IPV6_ADDR,
317 BROPT_NEIGH_SUPPRESS_ENABLED,
318 BROPT_MTU_SET_BY_USER,
319 BROPT_VLAN_STATS_PER_PORT,
320 BROPT_NO_LL_LEARN,
321 BROPT_VLAN_BRIDGE_BINDING,
322 };
323
324 struct net_bridge {
325 spinlock_t lock;
326 spinlock_t hash_lock;
327 struct list_head port_list;
328 struct net_device *dev;
329 struct pcpu_sw_netstats __percpu *stats;
330 unsigned long options;
331
332 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
333 __be16 vlan_proto;
334 u16 default_pvid;
335 struct net_bridge_vlan_group __rcu *vlgrp;
336 #endif
337
338 struct rhashtable fdb_hash_tbl;
339 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
340 union {
341 struct rtable fake_rtable;
342 struct rt6_info fake_rt6_info;
343 };
344 #endif
345 u16 group_fwd_mask;
346 u16 group_fwd_mask_required;
347
348
349 bridge_id designated_root;
350 bridge_id bridge_id;
351 unsigned char topology_change;
352 unsigned char topology_change_detected;
353 u16 root_port;
354 unsigned long max_age;
355 unsigned long hello_time;
356 unsigned long forward_delay;
357 unsigned long ageing_time;
358 unsigned long bridge_max_age;
359 unsigned long bridge_hello_time;
360 unsigned long bridge_forward_delay;
361 unsigned long bridge_ageing_time;
362 u32 root_path_cost;
363
364 u8 group_addr[ETH_ALEN];
365
366 enum {
367 BR_NO_STP,
368 BR_KERNEL_STP,
369 BR_USER_STP,
370 } stp_enabled;
371
372 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
373
374 u32 hash_max;
375
376 u32 multicast_last_member_count;
377 u32 multicast_startup_query_count;
378
379 u8 multicast_igmp_version;
380 u8 multicast_router;
381 #if IS_ENABLED(CONFIG_IPV6)
382 u8 multicast_mld_version;
383 #endif
384 spinlock_t multicast_lock;
385 unsigned long multicast_last_member_interval;
386 unsigned long multicast_membership_interval;
387 unsigned long multicast_querier_interval;
388 unsigned long multicast_query_interval;
389 unsigned long multicast_query_response_interval;
390 unsigned long multicast_startup_query_interval;
391
392 struct rhashtable mdb_hash_tbl;
393
394 struct hlist_head mdb_list;
395 struct hlist_head router_list;
396
397 struct timer_list multicast_router_timer;
398 struct bridge_mcast_other_query ip4_other_query;
399 struct bridge_mcast_own_query ip4_own_query;
400 struct bridge_mcast_querier ip4_querier;
401 struct bridge_mcast_stats __percpu *mcast_stats;
402 #if IS_ENABLED(CONFIG_IPV6)
403 struct bridge_mcast_other_query ip6_other_query;
404 struct bridge_mcast_own_query ip6_own_query;
405 struct bridge_mcast_querier ip6_querier;
406 #endif
407 #endif
408
409 struct timer_list hello_timer;
410 struct timer_list tcn_timer;
411 struct timer_list topology_change_timer;
412 struct delayed_work gc_work;
413 struct kobject *ifobj;
414 u32 auto_cnt;
415
416 #ifdef CONFIG_NET_SWITCHDEV
417 int offload_fwd_mark;
418 #endif
419 struct hlist_head fdb_list;
420 };
421
422 struct br_input_skb_cb {
423 struct net_device *brdev;
424
425 u16 frag_max_size;
426 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
427 u8 igmp;
428 u8 mrouters_only:1;
429 #endif
430 u8 proxyarp_replied:1;
431 u8 src_port_isolated:1;
432 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
433 u8 vlan_filtered:1;
434 #endif
435 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
436 u8 br_netfilter_broute:1;
437 #endif
438
439 #ifdef CONFIG_NET_SWITCHDEV
440 int offload_fwd_mark;
441 #endif
442 };
443
444 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
445
446 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
447 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
448 #else
449 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
450 #endif
451
452 #define br_printk(level, br, format, args...) \
453 printk(level "%s: " format, (br)->dev->name, ##args)
454
455 #define br_err(__br, format, args...) \
456 br_printk(KERN_ERR, __br, format, ##args)
457 #define br_warn(__br, format, args...) \
458 br_printk(KERN_WARNING, __br, format, ##args)
459 #define br_notice(__br, format, args...) \
460 br_printk(KERN_NOTICE, __br, format, ##args)
461 #define br_info(__br, format, args...) \
462 br_printk(KERN_INFO, __br, format, ##args)
463
464 #define br_debug(br, format, args...) \
465 pr_debug("%s: " format, (br)->dev->name, ##args)
466
467
468 static inline int br_is_root_bridge(const struct net_bridge *br)
469 {
470 return !memcmp(&br->bridge_id, &br->designated_root, 8);
471 }
472
473
474 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
475 {
476 return v->flags & BRIDGE_VLAN_INFO_MASTER;
477 }
478
479
480 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
481 {
482 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
483 }
484
485
486 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
487 {
488 if (br_vlan_is_master(v)) {
489 if (br_vlan_is_brentry(v))
490 return true;
491 else
492 return false;
493 }
494
495 return true;
496 }
497
498 static inline int br_opt_get(const struct net_bridge *br,
499 enum net_bridge_opts opt)
500 {
501 return test_bit(opt, &br->options);
502 }
503
504 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
505 struct netlink_ext_ack *extack);
506 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
507 int br_boolopt_multi_toggle(struct net_bridge *br,
508 struct br_boolopt_multi *bm,
509 struct netlink_ext_ack *extack);
510 void br_boolopt_multi_get(const struct net_bridge *br,
511 struct br_boolopt_multi *bm);
512 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
513
514
515 void br_dev_setup(struct net_device *dev);
516 void br_dev_delete(struct net_device *dev, struct list_head *list);
517 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
518 #ifdef CONFIG_NET_POLL_CONTROLLER
519 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
520 struct sk_buff *skb)
521 {
522 struct netpoll *np = p->np;
523
524 if (np)
525 netpoll_send_skb(np, skb);
526 }
527
528 int br_netpoll_enable(struct net_bridge_port *p);
529 void br_netpoll_disable(struct net_bridge_port *p);
530 #else
531 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
532 struct sk_buff *skb)
533 {
534 }
535
536 static inline int br_netpoll_enable(struct net_bridge_port *p)
537 {
538 return 0;
539 }
540
541 static inline void br_netpoll_disable(struct net_bridge_port *p)
542 {
543 }
544 #endif
545
546
547 int br_fdb_init(void);
548 void br_fdb_fini(void);
549 int br_fdb_hash_init(struct net_bridge *br);
550 void br_fdb_hash_fini(struct net_bridge *br);
551 void br_fdb_flush(struct net_bridge *br);
552 void br_fdb_find_delete_local(struct net_bridge *br,
553 const struct net_bridge_port *p,
554 const unsigned char *addr, u16 vid);
555 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
556 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
557 void br_fdb_cleanup(struct work_struct *work);
558 void br_fdb_delete_by_port(struct net_bridge *br,
559 const struct net_bridge_port *p, u16 vid, int do_all);
560 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
561 const unsigned char *addr,
562 __u16 vid);
563 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
564 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
565 unsigned long off);
566 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
567 const unsigned char *addr, u16 vid);
568 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
569 const unsigned char *addr, u16 vid, bool added_by_user);
570
571 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
572 struct net_device *dev, const unsigned char *addr, u16 vid);
573 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
574 const unsigned char *addr, u16 vid, u16 nlh_flags,
575 struct netlink_ext_ack *extack);
576 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
577 struct net_device *dev, struct net_device *fdev, int *idx);
578 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
579 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
580 struct netlink_ext_ack *extack);
581 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
582 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
583 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
584 const unsigned char *addr, u16 vid,
585 bool swdev_notify);
586 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
587 const unsigned char *addr, u16 vid,
588 bool swdev_notify);
589 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
590 const unsigned char *addr, u16 vid, bool offloaded);
591
592
593 enum br_pkt_type {
594 BR_PKT_UNICAST,
595 BR_PKT_MULTICAST,
596 BR_PKT_BROADCAST
597 };
598 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
599 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
600 bool local_rcv, bool local_orig);
601 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
602 void br_flood(struct net_bridge *br, struct sk_buff *skb,
603 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
604
605
606 static inline bool br_skb_isolated(const struct net_bridge_port *to,
607 const struct sk_buff *skb)
608 {
609 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
610 (to->flags & BR_ISOLATED);
611 }
612
613
614 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
615 int br_add_bridge(struct net *net, const char *name);
616 int br_del_bridge(struct net *net, const char *name);
617 int br_add_if(struct net_bridge *br, struct net_device *dev,
618 struct netlink_ext_ack *extack);
619 int br_del_if(struct net_bridge *br, struct net_device *dev);
620 void br_mtu_auto_adjust(struct net_bridge *br);
621 netdev_features_t br_features_recompute(struct net_bridge *br,
622 netdev_features_t features);
623 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
624 void br_manage_promisc(struct net_bridge *br);
625 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
626
627
628 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
629 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
630
631 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
632 {
633 return rcu_dereference(dev->rx_handler) == br_handle_frame;
634 }
635
636 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
637 {
638 return rcu_dereference_rtnl(dev->rx_handler) == br_handle_frame;
639 }
640
641 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
642 {
643 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
644 }
645
646 static inline struct net_bridge_port *
647 br_port_get_check_rtnl(const struct net_device *dev)
648 {
649 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
650 }
651
652
653 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
654 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
655 void __user *arg);
656
657
658 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
659 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
660 struct sk_buff *skb, u16 vid);
661 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
662 struct sk_buff *skb, u16 vid);
663 int br_multicast_add_port(struct net_bridge_port *port);
664 void br_multicast_del_port(struct net_bridge_port *port);
665 void br_multicast_enable_port(struct net_bridge_port *port);
666 void br_multicast_disable_port(struct net_bridge_port *port);
667 void br_multicast_init(struct net_bridge *br);
668 void br_multicast_open(struct net_bridge *br);
669 void br_multicast_stop(struct net_bridge *br);
670 void br_multicast_dev_del(struct net_bridge *br);
671 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
672 struct sk_buff *skb, bool local_rcv, bool local_orig);
673 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
674 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
675 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
676 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
677 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
678 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
679 #if IS_ENABLED(CONFIG_IPV6)
680 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
681 #endif
682 struct net_bridge_mdb_entry *
683 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
684 struct net_bridge_mdb_entry *
685 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
686 struct net_bridge_port_group *
687 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
688 struct net_bridge_port_group __rcu *next,
689 unsigned char flags, const unsigned char *src);
690 int br_mdb_hash_init(struct net_bridge *br);
691 void br_mdb_hash_fini(struct net_bridge *br);
692 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
693 struct br_ip *group, int type, u8 flags);
694 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
695 int type);
696 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
697 const struct sk_buff *skb, u8 type, u8 dir);
698 int br_multicast_init_stats(struct net_bridge *br);
699 void br_multicast_uninit_stats(struct net_bridge *br);
700 void br_multicast_get_stats(const struct net_bridge *br,
701 const struct net_bridge_port *p,
702 struct br_mcast_stats *dest);
703 void br_mdb_init(void);
704 void br_mdb_uninit(void);
705 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
706 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
707
708 #define mlock_dereference(X, br) \
709 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
710
711 static inline bool br_multicast_is_router(struct net_bridge *br)
712 {
713 return br->multicast_router == 2 ||
714 (br->multicast_router == 1 &&
715 timer_pending(&br->multicast_router_timer));
716 }
717
718 static inline bool
719 __br_multicast_querier_exists(struct net_bridge *br,
720 struct bridge_mcast_other_query *querier,
721 const bool is_ipv6)
722 {
723 bool own_querier_enabled;
724
725 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
726 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
727 own_querier_enabled = false;
728 else
729 own_querier_enabled = true;
730 } else {
731 own_querier_enabled = false;
732 }
733
734 return time_is_before_jiffies(querier->delay_time) &&
735 (own_querier_enabled || timer_pending(&querier->timer));
736 }
737
738 static inline bool br_multicast_querier_exists(struct net_bridge *br,
739 struct ethhdr *eth)
740 {
741 switch (eth->h_proto) {
742 case (htons(ETH_P_IP)):
743 return __br_multicast_querier_exists(br,
744 &br->ip4_other_query, false);
745 #if IS_ENABLED(CONFIG_IPV6)
746 case (htons(ETH_P_IPV6)):
747 return __br_multicast_querier_exists(br,
748 &br->ip6_other_query, true);
749 #endif
750 default:
751 return false;
752 }
753 }
754
755 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
756 {
757 return BR_INPUT_SKB_CB(skb)->igmp;
758 }
759 #else
760 static inline int br_multicast_rcv(struct net_bridge *br,
761 struct net_bridge_port *port,
762 struct sk_buff *skb,
763 u16 vid)
764 {
765 return 0;
766 }
767
768 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
769 struct sk_buff *skb, u16 vid)
770 {
771 return NULL;
772 }
773
774 static inline int br_multicast_add_port(struct net_bridge_port *port)
775 {
776 return 0;
777 }
778
779 static inline void br_multicast_del_port(struct net_bridge_port *port)
780 {
781 }
782
783 static inline void br_multicast_enable_port(struct net_bridge_port *port)
784 {
785 }
786
787 static inline void br_multicast_disable_port(struct net_bridge_port *port)
788 {
789 }
790
791 static inline void br_multicast_init(struct net_bridge *br)
792 {
793 }
794
795 static inline void br_multicast_open(struct net_bridge *br)
796 {
797 }
798
799 static inline void br_multicast_stop(struct net_bridge *br)
800 {
801 }
802
803 static inline void br_multicast_dev_del(struct net_bridge *br)
804 {
805 }
806
807 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
808 struct sk_buff *skb,
809 bool local_rcv, bool local_orig)
810 {
811 }
812
813 static inline bool br_multicast_is_router(struct net_bridge *br)
814 {
815 return false;
816 }
817
818 static inline bool br_multicast_querier_exists(struct net_bridge *br,
819 struct ethhdr *eth)
820 {
821 return false;
822 }
823
824 static inline void br_mdb_init(void)
825 {
826 }
827
828 static inline void br_mdb_uninit(void)
829 {
830 }
831
832 static inline int br_mdb_hash_init(struct net_bridge *br)
833 {
834 return 0;
835 }
836
837 static inline void br_mdb_hash_fini(struct net_bridge *br)
838 {
839 }
840
841 static inline void br_multicast_count(struct net_bridge *br,
842 const struct net_bridge_port *p,
843 const struct sk_buff *skb,
844 u8 type, u8 dir)
845 {
846 }
847
848 static inline int br_multicast_init_stats(struct net_bridge *br)
849 {
850 return 0;
851 }
852
853 static inline void br_multicast_uninit_stats(struct net_bridge *br)
854 {
855 }
856
857 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
858 {
859 return 0;
860 }
861 #endif
862
863
864 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
865 bool br_allowed_ingress(const struct net_bridge *br,
866 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
867 u16 *vid);
868 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
869 const struct sk_buff *skb);
870 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
871 struct sk_buff *br_handle_vlan(struct net_bridge *br,
872 const struct net_bridge_port *port,
873 struct net_bridge_vlan_group *vg,
874 struct sk_buff *skb);
875 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
876 bool *changed, struct netlink_ext_ack *extack);
877 int br_vlan_delete(struct net_bridge *br, u16 vid);
878 void br_vlan_flush(struct net_bridge *br);
879 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
880 void br_recalculate_fwd_mask(struct net_bridge *br);
881 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
882 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
883 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
884 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
885 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
886 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
887 int br_vlan_init(struct net_bridge *br);
888 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
889 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
890 struct netlink_ext_ack *extack);
891 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
892 bool *changed, struct netlink_ext_ack *extack);
893 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
894 void nbp_vlan_flush(struct net_bridge_port *port);
895 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
896 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
897 void br_vlan_get_stats(const struct net_bridge_vlan *v,
898 struct br_vlan_stats *stats);
899 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
900 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
901 void *ptr);
902
903 static inline struct net_bridge_vlan_group *br_vlan_group(
904 const struct net_bridge *br)
905 {
906 return rtnl_dereference(br->vlgrp);
907 }
908
909 static inline struct net_bridge_vlan_group *nbp_vlan_group(
910 const struct net_bridge_port *p)
911 {
912 return rtnl_dereference(p->vlgrp);
913 }
914
915 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
916 const struct net_bridge *br)
917 {
918 return rcu_dereference(br->vlgrp);
919 }
920
921 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
922 const struct net_bridge_port *p)
923 {
924 return rcu_dereference(p->vlgrp);
925 }
926
927
928
929
930 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
931 {
932 int err = 0;
933
934 if (skb_vlan_tag_present(skb)) {
935 *vid = skb_vlan_tag_get_id(skb);
936 } else {
937 *vid = 0;
938 err = -EINVAL;
939 }
940
941 return err;
942 }
943
944 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
945 {
946 if (!vg)
947 return 0;
948
949 smp_rmb();
950 return vg->pvid;
951 }
952
953 #else
954 static inline bool br_allowed_ingress(const struct net_bridge *br,
955 struct net_bridge_vlan_group *vg,
956 struct sk_buff *skb,
957 u16 *vid)
958 {
959 return true;
960 }
961
962 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
963 const struct sk_buff *skb)
964 {
965 return true;
966 }
967
968 static inline bool br_should_learn(struct net_bridge_port *p,
969 struct sk_buff *skb, u16 *vid)
970 {
971 return true;
972 }
973
974 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
975 const struct net_bridge_port *port,
976 struct net_bridge_vlan_group *vg,
977 struct sk_buff *skb)
978 {
979 return skb;
980 }
981
982 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
983 bool *changed, struct netlink_ext_ack *extack)
984 {
985 *changed = false;
986 return -EOPNOTSUPP;
987 }
988
989 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
990 {
991 return -EOPNOTSUPP;
992 }
993
994 static inline void br_vlan_flush(struct net_bridge *br)
995 {
996 }
997
998 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
999 {
1000 }
1001
1002 static inline int br_vlan_init(struct net_bridge *br)
1003 {
1004 return 0;
1005 }
1006
1007 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1008 bool *changed, struct netlink_ext_ack *extack)
1009 {
1010 *changed = false;
1011 return -EOPNOTSUPP;
1012 }
1013
1014 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1015 {
1016 return -EOPNOTSUPP;
1017 }
1018
1019 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1020 {
1021 }
1022
1023 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1024 u16 vid)
1025 {
1026 return NULL;
1027 }
1028
1029 static inline int nbp_vlan_init(struct net_bridge_port *port,
1030 struct netlink_ext_ack *extack)
1031 {
1032 return 0;
1033 }
1034
1035 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1036 {
1037 return 0;
1038 }
1039
1040 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1041 {
1042 return 0;
1043 }
1044
1045 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1046 unsigned long val)
1047 {
1048 return -EOPNOTSUPP;
1049 }
1050
1051 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1052 u32 filter_mask)
1053 {
1054 return 0;
1055 }
1056
1057 static inline struct net_bridge_vlan_group *br_vlan_group(
1058 const struct net_bridge *br)
1059 {
1060 return NULL;
1061 }
1062
1063 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1064 const struct net_bridge_port *p)
1065 {
1066 return NULL;
1067 }
1068
1069 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1070 const struct net_bridge *br)
1071 {
1072 return NULL;
1073 }
1074
1075 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1076 const struct net_bridge_port *p)
1077 {
1078 return NULL;
1079 }
1080
1081 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1082 struct br_vlan_stats *stats)
1083 {
1084 }
1085
1086 static inline void br_vlan_port_event(struct net_bridge_port *p,
1087 unsigned long event)
1088 {
1089 }
1090
1091 static inline int br_vlan_bridge_event(struct net_device *dev,
1092 unsigned long event, void *ptr)
1093 {
1094 return 0;
1095 }
1096 #endif
1097
1098 struct nf_br_ops {
1099 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1100 };
1101 extern const struct nf_br_ops __rcu *nf_br_ops;
1102
1103
1104 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1105 int br_nf_core_init(void);
1106 void br_nf_core_fini(void);
1107 void br_netfilter_rtable_init(struct net_bridge *);
1108 #else
1109 static inline int br_nf_core_init(void) { return 0; }
1110 static inline void br_nf_core_fini(void) {}
1111 #define br_netfilter_rtable_init(x)
1112 #endif
1113
1114
1115 void br_set_state(struct net_bridge_port *p, unsigned int state);
1116 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1117 void br_init_port(struct net_bridge_port *p);
1118 void br_become_designated_port(struct net_bridge_port *p);
1119
1120 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1121 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1122 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1123 int br_set_max_age(struct net_bridge *br, unsigned long x);
1124 int __set_ageing_time(struct net_device *dev, unsigned long t);
1125 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1126
1127
1128
1129 void br_stp_enable_bridge(struct net_bridge *br);
1130 void br_stp_disable_bridge(struct net_bridge *br);
1131 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1132 void br_stp_enable_port(struct net_bridge_port *p);
1133 void br_stp_disable_port(struct net_bridge_port *p);
1134 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1135 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1136 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1137 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1138 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1139 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1140
1141
1142 struct stp_proto;
1143 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1144 struct net_device *dev);
1145
1146
1147 void br_stp_timer_init(struct net_bridge *br);
1148 void br_stp_port_timer_init(struct net_bridge_port *p);
1149 unsigned long br_timer_value(const struct timer_list *timer);
1150
1151
1152 #if IS_ENABLED(CONFIG_ATM_LANE)
1153 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1154 #endif
1155
1156
1157 extern struct rtnl_link_ops br_link_ops;
1158 int br_netlink_init(void);
1159 void br_netlink_fini(void);
1160 void br_ifinfo_notify(int event, const struct net_bridge *br,
1161 const struct net_bridge_port *port);
1162 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1163 struct netlink_ext_ack *extack);
1164 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1165 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1166 u32 filter_mask, int nlflags);
1167
1168 #ifdef CONFIG_SYSFS
1169
1170 extern const struct sysfs_ops brport_sysfs_ops;
1171 int br_sysfs_addif(struct net_bridge_port *p);
1172 int br_sysfs_renameif(struct net_bridge_port *p);
1173
1174
1175 int br_sysfs_addbr(struct net_device *dev);
1176 void br_sysfs_delbr(struct net_device *dev);
1177
1178 #else
1179
1180 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1181 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1182 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1183 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1184 #endif
1185
1186
1187 #ifdef CONFIG_NET_SWITCHDEV
1188 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1189 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1190 struct sk_buff *skb);
1191 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1192 const struct sk_buff *skb);
1193 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1194 unsigned long flags,
1195 unsigned long mask);
1196 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1197 int type);
1198 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1199 struct netlink_ext_ack *extack);
1200 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1201
1202 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1203 {
1204 skb->offload_fwd_mark = 0;
1205 }
1206 #else
1207 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1208 {
1209 return 0;
1210 }
1211
1212 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1213 struct sk_buff *skb)
1214 {
1215 }
1216
1217 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1218 const struct sk_buff *skb)
1219 {
1220 return true;
1221 }
1222
1223 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1224 unsigned long flags,
1225 unsigned long mask)
1226 {
1227 return 0;
1228 }
1229
1230 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1231 u16 vid, u16 flags,
1232 struct netlink_ext_ack *extack)
1233 {
1234 return -EOPNOTSUPP;
1235 }
1236
1237 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1238 {
1239 return -EOPNOTSUPP;
1240 }
1241
1242 static inline void
1243 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1244 {
1245 }
1246
1247 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1248 {
1249 }
1250 #endif
1251
1252
1253 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1254 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1255 u16 vid, struct net_bridge_port *p);
1256 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1257 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1258 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
1259 #endif