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13#ifndef _BR_PRIVATE_H
14#define _BR_PRIVATE_H
15
16#include <linux/netdevice.h>
17#include <linux/if_bridge.h>
18#include <linux/netpoll.h>
19#include <linux/u64_stats_sync.h>
20#include <net/route.h>
21#include <net/ip6_fib.h>
22#include <linux/if_vlan.h>
23#include <linux/rhashtable.h>
24
25#define BR_HASH_BITS 8
26#define BR_HASH_SIZE (1 << BR_HASH_BITS)
27
28#define BR_HOLD_TIME (1*HZ)
29
30#define BR_PORT_BITS 10
31#define BR_MAX_PORTS (1<<BR_PORT_BITS)
32
33#define BR_VERSION "2.3"
34
35
36#define BR_GROUPFWD_DEFAULT 0
37
38#define BR_GROUPFWD_RESTRICTED 0x0007u
39
40#define BR_GROUPFWD_8021AD 0xB801u
41
42
43#define BR_STP_PROG "/sbin/bridge-stp"
44
45typedef struct bridge_id bridge_id;
46typedef struct mac_addr mac_addr;
47typedef __u16 port_id;
48
49struct bridge_id
50{
51 unsigned char prio[2];
52 unsigned char addr[ETH_ALEN];
53};
54
55struct mac_addr
56{
57 unsigned char addr[ETH_ALEN];
58};
59
60#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
61
62struct bridge_mcast_own_query {
63 struct timer_list timer;
64 u32 startup_sent;
65};
66
67
68struct bridge_mcast_other_query {
69 struct timer_list timer;
70 unsigned long delay_time;
71};
72
73
74struct bridge_mcast_querier {
75 struct br_ip addr;
76 struct net_bridge_port __rcu *port;
77};
78
79
80struct bridge_mcast_stats {
81 struct br_mcast_stats mstats;
82 struct u64_stats_sync syncp;
83};
84#endif
85
86struct br_vlan_stats {
87 u64 rx_bytes;
88 u64 rx_packets;
89 u64 tx_bytes;
90 u64 tx_packets;
91 struct u64_stats_sync syncp;
92};
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113
114struct net_bridge_vlan {
115 struct rhash_head vnode;
116 u16 vid;
117 u16 flags;
118 struct br_vlan_stats __percpu *stats;
119 union {
120 struct net_bridge *br;
121 struct net_bridge_port *port;
122 };
123 union {
124 atomic_t refcnt;
125 struct net_bridge_vlan *brvlan;
126 };
127 struct list_head vlist;
128
129 struct rcu_head rcu;
130};
131
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142
143
144
145
146struct net_bridge_vlan_group {
147 struct rhashtable vlan_hash;
148 struct list_head vlan_list;
149 u16 num_vlans;
150 u16 pvid;
151};
152
153struct net_bridge_fdb_entry
154{
155 struct hlist_node hlist;
156 struct net_bridge_port *dst;
157
158 unsigned long updated;
159 unsigned long used;
160 mac_addr addr;
161 __u16 vlan_id;
162 unsigned char is_local:1,
163 is_static:1,
164 added_by_user:1,
165 added_by_external_learn:1;
166 struct rcu_head rcu;
167};
168
169#define MDB_PG_FLAGS_PERMANENT BIT(0)
170#define MDB_PG_FLAGS_OFFLOAD BIT(1)
171
172struct net_bridge_port_group {
173 struct net_bridge_port *port;
174 struct net_bridge_port_group __rcu *next;
175 struct hlist_node mglist;
176 struct rcu_head rcu;
177 struct timer_list timer;
178 struct br_ip addr;
179 unsigned char flags;
180};
181
182struct net_bridge_mdb_entry
183{
184 struct hlist_node hlist[2];
185 struct net_bridge *br;
186 struct net_bridge_port_group __rcu *ports;
187 struct rcu_head rcu;
188 struct timer_list timer;
189 struct br_ip addr;
190 bool mglist;
191};
192
193struct net_bridge_mdb_htable
194{
195 struct hlist_head *mhash;
196 struct rcu_head rcu;
197 struct net_bridge_mdb_htable *old;
198 u32 size;
199 u32 max;
200 u32 secret;
201 u32 ver;
202};
203
204struct net_bridge_port
205{
206 struct net_bridge *br;
207 struct net_device *dev;
208 struct list_head list;
209
210
211 u8 priority;
212 u8 state;
213 u16 port_no;
214 unsigned char topology_change_ack;
215 unsigned char config_pending;
216 port_id port_id;
217 port_id designated_port;
218 bridge_id designated_root;
219 bridge_id designated_bridge;
220 u32 path_cost;
221 u32 designated_cost;
222 unsigned long designated_age;
223
224 struct timer_list forward_delay_timer;
225 struct timer_list hold_timer;
226 struct timer_list message_age_timer;
227 struct kobject kobj;
228 struct rcu_head rcu;
229
230 unsigned long flags;
231
232#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
233 struct bridge_mcast_own_query ip4_own_query;
234#if IS_ENABLED(CONFIG_IPV6)
235 struct bridge_mcast_own_query ip6_own_query;
236#endif
237 unsigned char multicast_router;
238 struct bridge_mcast_stats __percpu *mcast_stats;
239 struct timer_list multicast_router_timer;
240 struct hlist_head mglist;
241 struct hlist_node rlist;
242#endif
243
244#ifdef CONFIG_SYSFS
245 char sysfs_name[IFNAMSIZ];
246#endif
247
248#ifdef CONFIG_NET_POLL_CONTROLLER
249 struct netpoll *np;
250#endif
251#ifdef CONFIG_BRIDGE_VLAN_FILTERING
252 struct net_bridge_vlan_group __rcu *vlgrp;
253#endif
254#ifdef CONFIG_NET_SWITCHDEV
255 int offload_fwd_mark;
256#endif
257};
258
259#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
260#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
261
262#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
263
264static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
265{
266 return rcu_dereference(dev->rx_handler_data);
267}
268
269static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
270{
271 return br_port_exists(dev) ?
272 rtnl_dereference(dev->rx_handler_data) : NULL;
273}
274
275struct net_bridge
276{
277 spinlock_t lock;
278 struct list_head port_list;
279 struct net_device *dev;
280
281 struct pcpu_sw_netstats __percpu *stats;
282 spinlock_t hash_lock;
283 struct hlist_head hash[BR_HASH_SIZE];
284#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
285 union {
286 struct rtable fake_rtable;
287 struct rt6_info fake_rt6_info;
288 };
289 bool nf_call_iptables;
290 bool nf_call_ip6tables;
291 bool nf_call_arptables;
292#endif
293 u16 group_fwd_mask;
294 u16 group_fwd_mask_required;
295
296
297 bridge_id designated_root;
298 bridge_id bridge_id;
299 u32 root_path_cost;
300 unsigned long max_age;
301 unsigned long hello_time;
302 unsigned long forward_delay;
303 unsigned long bridge_max_age;
304 unsigned long ageing_time;
305 unsigned long bridge_hello_time;
306 unsigned long bridge_forward_delay;
307
308 u8 group_addr[ETH_ALEN];
309 bool group_addr_set;
310 u16 root_port;
311
312 enum {
313 BR_NO_STP,
314 BR_KERNEL_STP,
315 BR_USER_STP,
316 } stp_enabled;
317
318 unsigned char topology_change;
319 unsigned char topology_change_detected;
320
321#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
322 unsigned char multicast_router;
323
324 u8 multicast_disabled:1;
325 u8 multicast_querier:1;
326 u8 multicast_query_use_ifaddr:1;
327 u8 has_ipv6_addr:1;
328 u8 multicast_stats_enabled:1;
329
330 u32 hash_elasticity;
331 u32 hash_max;
332
333 u32 multicast_last_member_count;
334 u32 multicast_startup_query_count;
335
336 unsigned long multicast_last_member_interval;
337 unsigned long multicast_membership_interval;
338 unsigned long multicast_querier_interval;
339 unsigned long multicast_query_interval;
340 unsigned long multicast_query_response_interval;
341 unsigned long multicast_startup_query_interval;
342
343 spinlock_t multicast_lock;
344 struct net_bridge_mdb_htable __rcu *mdb;
345 struct hlist_head router_list;
346
347 struct timer_list multicast_router_timer;
348 struct bridge_mcast_other_query ip4_other_query;
349 struct bridge_mcast_own_query ip4_own_query;
350 struct bridge_mcast_querier ip4_querier;
351 struct bridge_mcast_stats __percpu *mcast_stats;
352#if IS_ENABLED(CONFIG_IPV6)
353 struct bridge_mcast_other_query ip6_other_query;
354 struct bridge_mcast_own_query ip6_own_query;
355 struct bridge_mcast_querier ip6_querier;
356#endif
357#endif
358
359 struct timer_list hello_timer;
360 struct timer_list tcn_timer;
361 struct timer_list topology_change_timer;
362 struct timer_list gc_timer;
363 struct kobject *ifobj;
364 u32 auto_cnt;
365
366#ifdef CONFIG_NET_SWITCHDEV
367 int offload_fwd_mark;
368#endif
369
370#ifdef CONFIG_BRIDGE_VLAN_FILTERING
371 struct net_bridge_vlan_group __rcu *vlgrp;
372 u8 vlan_enabled;
373 u8 vlan_stats_enabled;
374 __be16 vlan_proto;
375 u16 default_pvid;
376#endif
377};
378
379struct br_input_skb_cb {
380 struct net_device *brdev;
381
382#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
383 int igmp;
384 int mrouters_only;
385#endif
386
387 bool proxyarp_replied;
388
389#ifdef CONFIG_BRIDGE_VLAN_FILTERING
390 bool vlan_filtered;
391#endif
392
393#ifdef CONFIG_NET_SWITCHDEV
394 int offload_fwd_mark;
395#endif
396};
397
398#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
399
400#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
401# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
402#else
403# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
404#endif
405
406#define br_printk(level, br, format, args...) \
407 printk(level "%s: " format, (br)->dev->name, ##args)
408
409#define br_err(__br, format, args...) \
410 br_printk(KERN_ERR, __br, format, ##args)
411#define br_warn(__br, format, args...) \
412 br_printk(KERN_WARNING, __br, format, ##args)
413#define br_notice(__br, format, args...) \
414 br_printk(KERN_NOTICE, __br, format, ##args)
415#define br_info(__br, format, args...) \
416 br_printk(KERN_INFO, __br, format, ##args)
417
418#define br_debug(br, format, args...) \
419 pr_debug("%s: " format, (br)->dev->name, ##args)
420
421
422static inline int br_is_root_bridge(const struct net_bridge *br)
423{
424 return !memcmp(&br->bridge_id, &br->designated_root, 8);
425}
426
427
428static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
429{
430 return v->flags & BRIDGE_VLAN_INFO_MASTER;
431}
432
433
434static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
435{
436 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
437}
438
439
440static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
441{
442 if (br_vlan_is_master(v)) {
443 if (br_vlan_is_brentry(v))
444 return true;
445 else
446 return false;
447 }
448
449 return true;
450}
451
452
453void br_dev_setup(struct net_device *dev);
454void br_dev_delete(struct net_device *dev, struct list_head *list);
455netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
456#ifdef CONFIG_NET_POLL_CONTROLLER
457static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
458 struct sk_buff *skb)
459{
460 struct netpoll *np = p->np;
461
462 if (np)
463 netpoll_send_skb(np, skb);
464}
465
466int br_netpoll_enable(struct net_bridge_port *p);
467void br_netpoll_disable(struct net_bridge_port *p);
468#else
469static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
470 struct sk_buff *skb)
471{
472}
473
474static inline int br_netpoll_enable(struct net_bridge_port *p)
475{
476 return 0;
477}
478
479static inline void br_netpoll_disable(struct net_bridge_port *p)
480{
481}
482#endif
483
484
485int br_fdb_init(void);
486void br_fdb_fini(void);
487void br_fdb_flush(struct net_bridge *br);
488void br_fdb_find_delete_local(struct net_bridge *br,
489 const struct net_bridge_port *p,
490 const unsigned char *addr, u16 vid);
491void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
492void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
493void br_fdb_cleanup(unsigned long arg);
494void br_fdb_delete_by_port(struct net_bridge *br,
495 const struct net_bridge_port *p, u16 vid, int do_all);
496struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
497 const unsigned char *addr, __u16 vid);
498int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
499int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
500 unsigned long off);
501int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
502 const unsigned char *addr, u16 vid);
503void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
504 const unsigned char *addr, u16 vid, bool added_by_user);
505
506int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
507 struct net_device *dev, const unsigned char *addr, u16 vid);
508int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
509 const unsigned char *addr, u16 vid, u16 nlh_flags);
510int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
511 struct net_device *dev, struct net_device *fdev, int *idx);
512int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
513void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
514int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
515 const unsigned char *addr, u16 vid);
516int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
517 const unsigned char *addr, u16 vid);
518
519
520enum br_pkt_type {
521 BR_PKT_UNICAST,
522 BR_PKT_MULTICAST,
523 BR_PKT_BROADCAST
524};
525int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
526void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
527 bool local_rcv, bool local_orig);
528int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
529void br_flood(struct net_bridge *br, struct sk_buff *skb,
530 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
531
532
533void br_port_carrier_check(struct net_bridge_port *p);
534int br_add_bridge(struct net *net, const char *name);
535int br_del_bridge(struct net *net, const char *name);
536int br_add_if(struct net_bridge *br, struct net_device *dev);
537int br_del_if(struct net_bridge *br, struct net_device *dev);
538int br_min_mtu(const struct net_bridge *br);
539netdev_features_t br_features_recompute(struct net_bridge *br,
540 netdev_features_t features);
541void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
542void br_manage_promisc(struct net_bridge *br);
543
544
545int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
546rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
547
548static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
549{
550 return rcu_dereference(dev->rx_handler) == br_handle_frame;
551}
552
553static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
554{
555 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
556}
557
558
559int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
560int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
561 void __user *arg);
562
563
564#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
565extern unsigned int br_mdb_rehash_seq;
566int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
567 struct sk_buff *skb, u16 vid);
568struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
569 struct sk_buff *skb, u16 vid);
570int br_multicast_add_port(struct net_bridge_port *port);
571void br_multicast_del_port(struct net_bridge_port *port);
572void br_multicast_enable_port(struct net_bridge_port *port);
573void br_multicast_disable_port(struct net_bridge_port *port);
574void br_multicast_init(struct net_bridge *br);
575void br_multicast_open(struct net_bridge *br);
576void br_multicast_stop(struct net_bridge *br);
577void br_multicast_dev_del(struct net_bridge *br);
578void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
579 struct sk_buff *skb, bool local_rcv, bool local_orig);
580int br_multicast_set_router(struct net_bridge *br, unsigned long val);
581int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
582int br_multicast_toggle(struct net_bridge *br, unsigned long val);
583int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
584int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
585struct net_bridge_mdb_entry *
586br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
587struct net_bridge_mdb_entry *
588br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
589 struct br_ip *group);
590void br_multicast_free_pg(struct rcu_head *head);
591struct net_bridge_port_group *
592br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
593 struct net_bridge_port_group __rcu *next,
594 unsigned char flags);
595void br_mdb_init(void);
596void br_mdb_uninit(void);
597void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
598 struct br_ip *group, int type, u8 flags);
599void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
600 int type);
601void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
602 const struct sk_buff *skb, u8 type, u8 dir);
603int br_multicast_init_stats(struct net_bridge *br);
604void br_multicast_get_stats(const struct net_bridge *br,
605 const struct net_bridge_port *p,
606 struct br_mcast_stats *dest);
607
608#define mlock_dereference(X, br) \
609 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
610
611static inline bool br_multicast_is_router(struct net_bridge *br)
612{
613 return br->multicast_router == 2 ||
614 (br->multicast_router == 1 &&
615 timer_pending(&br->multicast_router_timer));
616}
617
618static inline bool
619__br_multicast_querier_exists(struct net_bridge *br,
620 struct bridge_mcast_other_query *querier,
621 const bool is_ipv6)
622{
623 bool own_querier_enabled;
624
625 if (br->multicast_querier) {
626 if (is_ipv6 && !br->has_ipv6_addr)
627 own_querier_enabled = false;
628 else
629 own_querier_enabled = true;
630 } else {
631 own_querier_enabled = false;
632 }
633
634 return time_is_before_jiffies(querier->delay_time) &&
635 (own_querier_enabled || timer_pending(&querier->timer));
636}
637
638static inline bool br_multicast_querier_exists(struct net_bridge *br,
639 struct ethhdr *eth)
640{
641 switch (eth->h_proto) {
642 case (htons(ETH_P_IP)):
643 return __br_multicast_querier_exists(br,
644 &br->ip4_other_query, false);
645#if IS_ENABLED(CONFIG_IPV6)
646 case (htons(ETH_P_IPV6)):
647 return __br_multicast_querier_exists(br,
648 &br->ip6_other_query, true);
649#endif
650 default:
651 return false;
652 }
653}
654
655static inline int br_multicast_igmp_type(const struct sk_buff *skb)
656{
657 return BR_INPUT_SKB_CB(skb)->igmp;
658}
659#else
660static inline int br_multicast_rcv(struct net_bridge *br,
661 struct net_bridge_port *port,
662 struct sk_buff *skb,
663 u16 vid)
664{
665 return 0;
666}
667
668static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
669 struct sk_buff *skb, u16 vid)
670{
671 return NULL;
672}
673
674static inline int br_multicast_add_port(struct net_bridge_port *port)
675{
676 return 0;
677}
678
679static inline void br_multicast_del_port(struct net_bridge_port *port)
680{
681}
682
683static inline void br_multicast_enable_port(struct net_bridge_port *port)
684{
685}
686
687static inline void br_multicast_disable_port(struct net_bridge_port *port)
688{
689}
690
691static inline void br_multicast_init(struct net_bridge *br)
692{
693}
694
695static inline void br_multicast_open(struct net_bridge *br)
696{
697}
698
699static inline void br_multicast_stop(struct net_bridge *br)
700{
701}
702
703static inline void br_multicast_dev_del(struct net_bridge *br)
704{
705}
706
707static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
708 struct sk_buff *skb,
709 bool local_rcv, bool local_orig)
710{
711}
712
713static inline bool br_multicast_is_router(struct net_bridge *br)
714{
715 return 0;
716}
717
718static inline bool br_multicast_querier_exists(struct net_bridge *br,
719 struct ethhdr *eth)
720{
721 return false;
722}
723
724static inline void br_mdb_init(void)
725{
726}
727
728static inline void br_mdb_uninit(void)
729{
730}
731
732static inline void br_multicast_count(struct net_bridge *br,
733 const struct net_bridge_port *p,
734 const struct sk_buff *skb,
735 u8 type, u8 dir)
736{
737}
738
739static inline int br_multicast_init_stats(struct net_bridge *br)
740{
741 return 0;
742}
743
744static inline int br_multicast_igmp_type(const struct sk_buff *skb)
745{
746 return 0;
747}
748#endif
749
750
751#ifdef CONFIG_BRIDGE_VLAN_FILTERING
752bool br_allowed_ingress(const struct net_bridge *br,
753 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
754 u16 *vid);
755bool br_allowed_egress(struct net_bridge_vlan_group *vg,
756 const struct sk_buff *skb);
757bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
758struct sk_buff *br_handle_vlan(struct net_bridge *br,
759 struct net_bridge_vlan_group *vg,
760 struct sk_buff *skb);
761int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
762int br_vlan_delete(struct net_bridge *br, u16 vid);
763void br_vlan_flush(struct net_bridge *br);
764struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
765void br_recalculate_fwd_mask(struct net_bridge *br);
766int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
767int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
768int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
769int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
770int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
771int br_vlan_init(struct net_bridge *br);
772int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
773int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
774int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
775int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
776void nbp_vlan_flush(struct net_bridge_port *port);
777int nbp_vlan_init(struct net_bridge_port *port);
778int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
779void br_vlan_get_stats(const struct net_bridge_vlan *v,
780 struct br_vlan_stats *stats);
781
782static inline struct net_bridge_vlan_group *br_vlan_group(
783 const struct net_bridge *br)
784{
785 return rtnl_dereference(br->vlgrp);
786}
787
788static inline struct net_bridge_vlan_group *nbp_vlan_group(
789 const struct net_bridge_port *p)
790{
791 return rtnl_dereference(p->vlgrp);
792}
793
794static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
795 const struct net_bridge *br)
796{
797 return rcu_dereference(br->vlgrp);
798}
799
800static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
801 const struct net_bridge_port *p)
802{
803 return rcu_dereference(p->vlgrp);
804}
805
806
807
808
809static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
810{
811 int err = 0;
812
813 if (skb_vlan_tag_present(skb)) {
814 *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
815 } else {
816 *vid = 0;
817 err = -EINVAL;
818 }
819
820 return err;
821}
822
823static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
824{
825 if (!vg)
826 return 0;
827
828 smp_rmb();
829 return vg->pvid;
830}
831
832static inline int br_vlan_enabled(struct net_bridge *br)
833{
834 return br->vlan_enabled;
835}
836#else
837static inline bool br_allowed_ingress(const struct net_bridge *br,
838 struct net_bridge_vlan_group *vg,
839 struct sk_buff *skb,
840 u16 *vid)
841{
842 return true;
843}
844
845static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
846 const struct sk_buff *skb)
847{
848 return true;
849}
850
851static inline bool br_should_learn(struct net_bridge_port *p,
852 struct sk_buff *skb, u16 *vid)
853{
854 return true;
855}
856
857static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
858 struct net_bridge_vlan_group *vg,
859 struct sk_buff *skb)
860{
861 return skb;
862}
863
864static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
865{
866 return -EOPNOTSUPP;
867}
868
869static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
870{
871 return -EOPNOTSUPP;
872}
873
874static inline void br_vlan_flush(struct net_bridge *br)
875{
876}
877
878static inline void br_recalculate_fwd_mask(struct net_bridge *br)
879{
880}
881
882static inline int br_vlan_init(struct net_bridge *br)
883{
884 return 0;
885}
886
887static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
888{
889 return -EOPNOTSUPP;
890}
891
892static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
893{
894 return -EOPNOTSUPP;
895}
896
897static inline void nbp_vlan_flush(struct net_bridge_port *port)
898{
899}
900
901static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
902 u16 vid)
903{
904 return NULL;
905}
906
907static inline int nbp_vlan_init(struct net_bridge_port *port)
908{
909 return 0;
910}
911
912static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
913{
914 return 0;
915}
916
917static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
918{
919 return 0;
920}
921
922static inline int br_vlan_enabled(struct net_bridge *br)
923{
924 return 0;
925}
926
927static inline int __br_vlan_filter_toggle(struct net_bridge *br,
928 unsigned long val)
929{
930 return -EOPNOTSUPP;
931}
932
933static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
934 u32 filter_mask)
935{
936 return 0;
937}
938
939static inline struct net_bridge_vlan_group *br_vlan_group(
940 const struct net_bridge *br)
941{
942 return NULL;
943}
944
945static inline struct net_bridge_vlan_group *nbp_vlan_group(
946 const struct net_bridge_port *p)
947{
948 return NULL;
949}
950
951static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
952 const struct net_bridge *br)
953{
954 return NULL;
955}
956
957static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
958 const struct net_bridge_port *p)
959{
960 return NULL;
961}
962
963static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
964 struct br_vlan_stats *stats)
965{
966}
967#endif
968
969struct nf_br_ops {
970 int (*br_dev_xmit_hook)(struct sk_buff *skb);
971};
972extern const struct nf_br_ops __rcu *nf_br_ops;
973
974
975#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
976int br_nf_core_init(void);
977void br_nf_core_fini(void);
978void br_netfilter_rtable_init(struct net_bridge *);
979#else
980static inline int br_nf_core_init(void) { return 0; }
981static inline void br_nf_core_fini(void) {}
982#define br_netfilter_rtable_init(x)
983#endif
984
985
986void br_set_state(struct net_bridge_port *p, unsigned int state);
987struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
988void br_init_port(struct net_bridge_port *p);
989void br_become_designated_port(struct net_bridge_port *p);
990
991void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
992int br_set_forward_delay(struct net_bridge *br, unsigned long x);
993int br_set_hello_time(struct net_bridge *br, unsigned long x);
994int br_set_max_age(struct net_bridge *br, unsigned long x);
995int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
996
997
998
999void br_stp_enable_bridge(struct net_bridge *br);
1000void br_stp_disable_bridge(struct net_bridge *br);
1001void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1002void br_stp_enable_port(struct net_bridge_port *p);
1003void br_stp_disable_port(struct net_bridge_port *p);
1004bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1005void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1006void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1007int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1008int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1009ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1010
1011
1012struct stp_proto;
1013void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1014 struct net_device *dev);
1015
1016
1017void br_stp_timer_init(struct net_bridge *br);
1018void br_stp_port_timer_init(struct net_bridge_port *p);
1019unsigned long br_timer_value(const struct timer_list *timer);
1020
1021
1022#if IS_ENABLED(CONFIG_ATM_LANE)
1023extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1024#endif
1025
1026
1027extern struct rtnl_link_ops br_link_ops;
1028int br_netlink_init(void);
1029void br_netlink_fini(void);
1030void br_ifinfo_notify(int event, struct net_bridge_port *port);
1031int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1032int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1033int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1034 u32 filter_mask, int nlflags);
1035
1036#ifdef CONFIG_SYSFS
1037
1038extern const struct sysfs_ops brport_sysfs_ops;
1039int br_sysfs_addif(struct net_bridge_port *p);
1040int br_sysfs_renameif(struct net_bridge_port *p);
1041
1042
1043int br_sysfs_addbr(struct net_device *dev);
1044void br_sysfs_delbr(struct net_device *dev);
1045
1046#else
1047
1048static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1049static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1050static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1051static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1052#endif
1053
1054
1055#ifdef CONFIG_NET_SWITCHDEV
1056int nbp_switchdev_mark_set(struct net_bridge_port *p);
1057void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1058 struct sk_buff *skb);
1059bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1060 const struct sk_buff *skb);
1061#else
1062static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1063{
1064 return 0;
1065}
1066
1067static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1068 struct sk_buff *skb)
1069{
1070}
1071
1072static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1073 const struct sk_buff *skb)
1074{
1075 return true;
1076}
1077#endif
1078
1079#endif
1080