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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#include <linux/refcount.h>
25
26#define BR_HASH_BITS 8
27#define BR_HASH_SIZE (1 << BR_HASH_BITS)
28
29#define BR_HOLD_TIME (1*HZ)
30
31#define BR_PORT_BITS 10
32#define BR_MAX_PORTS (1<<BR_PORT_BITS)
33
34#define BR_VERSION "2.3"
35
36
37#define BR_GROUPFWD_DEFAULT 0
38
39#define BR_GROUPFWD_RESTRICTED 0x0007u
40
41#define BR_GROUPFWD_8021AD 0xB801u
42
43
44#define BR_STP_PROG "/sbin/bridge-stp"
45
46typedef struct bridge_id bridge_id;
47typedef struct mac_addr mac_addr;
48typedef __u16 port_id;
49
50struct bridge_id
51{
52 unsigned char prio[2];
53 unsigned char addr[ETH_ALEN];
54};
55
56struct mac_addr
57{
58 unsigned char addr[ETH_ALEN];
59};
60
61#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
62
63struct bridge_mcast_own_query {
64 struct timer_list timer;
65 u32 startup_sent;
66};
67
68
69struct bridge_mcast_other_query {
70 struct timer_list timer;
71 unsigned long delay_time;
72};
73
74
75struct bridge_mcast_querier {
76 struct br_ip addr;
77 struct net_bridge_port __rcu *port;
78};
79
80
81struct bridge_mcast_stats {
82 struct br_mcast_stats mstats;
83 struct u64_stats_sync syncp;
84};
85#endif
86
87struct br_vlan_stats {
88 u64 rx_bytes;
89 u64 rx_packets;
90 u64 tx_bytes;
91 u64 tx_packets;
92 struct u64_stats_sync syncp;
93};
94
95struct br_tunnel_info {
96 __be64 tunnel_id;
97 struct metadata_dst *tunnel_dst;
98};
99
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119
120struct net_bridge_vlan {
121 struct rhash_head vnode;
122 struct rhash_head tnode;
123 u16 vid;
124 u16 flags;
125 struct br_vlan_stats __percpu *stats;
126 union {
127 struct net_bridge *br;
128 struct net_bridge_port *port;
129 };
130 union {
131 refcount_t refcnt;
132 struct net_bridge_vlan *brvlan;
133 };
134
135 struct br_tunnel_info tinfo;
136
137 struct list_head vlist;
138
139 struct rcu_head rcu;
140};
141
142
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154
155
156struct net_bridge_vlan_group {
157 struct rhashtable vlan_hash;
158 struct rhashtable tunnel_hash;
159 struct list_head vlan_list;
160 u16 num_vlans;
161 u16 pvid;
162};
163
164struct net_bridge_fdb_entry {
165 struct hlist_node hlist;
166 struct net_bridge_port *dst;
167
168 mac_addr addr;
169 __u16 vlan_id;
170 unsigned char is_local:1,
171 is_static:1,
172 added_by_user:1,
173 added_by_external_learn:1,
174 offloaded:1;
175
176
177 unsigned long updated ____cacheline_aligned_in_smp;
178 unsigned long used;
179
180 struct rcu_head rcu;
181};
182
183#define MDB_PG_FLAGS_PERMANENT BIT(0)
184#define MDB_PG_FLAGS_OFFLOAD BIT(1)
185
186struct net_bridge_port_group {
187 struct net_bridge_port *port;
188 struct net_bridge_port_group __rcu *next;
189 struct hlist_node mglist;
190 struct rcu_head rcu;
191 struct timer_list timer;
192 struct br_ip addr;
193 unsigned char flags;
194 unsigned char eth_addr[ETH_ALEN];
195};
196
197struct net_bridge_mdb_entry
198{
199 struct hlist_node hlist[2];
200 struct net_bridge *br;
201 struct net_bridge_port_group __rcu *ports;
202 struct rcu_head rcu;
203 struct timer_list timer;
204 struct br_ip addr;
205 bool mglist;
206};
207
208struct net_bridge_mdb_htable
209{
210 struct hlist_head *mhash;
211 struct rcu_head rcu;
212 struct net_bridge_mdb_htable *old;
213 u32 size;
214 u32 max;
215 u32 secret;
216 u32 ver;
217};
218
219struct net_bridge_port {
220 struct net_bridge *br;
221 struct net_device *dev;
222 struct list_head list;
223
224 unsigned long flags;
225#ifdef CONFIG_BRIDGE_VLAN_FILTERING
226 struct net_bridge_vlan_group __rcu *vlgrp;
227#endif
228
229
230 u8 priority;
231 u8 state;
232 u16 port_no;
233 unsigned char topology_change_ack;
234 unsigned char config_pending;
235 port_id port_id;
236 port_id designated_port;
237 bridge_id designated_root;
238 bridge_id designated_bridge;
239 u32 path_cost;
240 u32 designated_cost;
241 unsigned long designated_age;
242
243 struct timer_list forward_delay_timer;
244 struct timer_list hold_timer;
245 struct timer_list message_age_timer;
246 struct kobject kobj;
247 struct rcu_head rcu;
248
249#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
250 struct bridge_mcast_own_query ip4_own_query;
251#if IS_ENABLED(CONFIG_IPV6)
252 struct bridge_mcast_own_query ip6_own_query;
253#endif
254 unsigned char multicast_router;
255 struct bridge_mcast_stats __percpu *mcast_stats;
256 struct timer_list multicast_router_timer;
257 struct hlist_head mglist;
258 struct hlist_node rlist;
259#endif
260
261#ifdef CONFIG_SYSFS
262 char sysfs_name[IFNAMSIZ];
263#endif
264
265#ifdef CONFIG_NET_POLL_CONTROLLER
266 struct netpoll *np;
267#endif
268#ifdef CONFIG_NET_SWITCHDEV
269 int offload_fwd_mark;
270#endif
271};
272
273#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
274#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
275
276#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
277
278static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
279{
280 return rcu_dereference(dev->rx_handler_data);
281}
282
283static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
284{
285 return br_port_exists(dev) ?
286 rtnl_dereference(dev->rx_handler_data) : NULL;
287}
288
289static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
290{
291 return br_port_exists(dev) ?
292 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
293}
294
295struct net_bridge {
296 spinlock_t lock;
297 spinlock_t hash_lock;
298 struct list_head port_list;
299 struct net_device *dev;
300 struct pcpu_sw_netstats __percpu *stats;
301
302#ifdef CONFIG_BRIDGE_VLAN_FILTERING
303 u8 vlan_enabled;
304 u8 vlan_stats_enabled;
305 __be16 vlan_proto;
306 u16 default_pvid;
307 struct net_bridge_vlan_group __rcu *vlgrp;
308#endif
309
310 struct hlist_head hash[BR_HASH_SIZE];
311#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
312 union {
313 struct rtable fake_rtable;
314 struct rt6_info fake_rt6_info;
315 };
316 bool nf_call_iptables;
317 bool nf_call_ip6tables;
318 bool nf_call_arptables;
319#endif
320 u16 group_fwd_mask;
321 u16 group_fwd_mask_required;
322
323
324 bridge_id designated_root;
325 bridge_id bridge_id;
326 u32 root_path_cost;
327 unsigned char topology_change;
328 unsigned char topology_change_detected;
329 u16 root_port;
330 unsigned long max_age;
331 unsigned long hello_time;
332 unsigned long forward_delay;
333 unsigned long ageing_time;
334 unsigned long bridge_max_age;
335 unsigned long bridge_hello_time;
336 unsigned long bridge_forward_delay;
337 unsigned long bridge_ageing_time;
338
339 u8 group_addr[ETH_ALEN];
340 bool group_addr_set;
341
342 enum {
343 BR_NO_STP,
344 BR_KERNEL_STP,
345 BR_USER_STP,
346 } stp_enabled;
347
348#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
349 unsigned char multicast_router;
350
351 u8 multicast_disabled:1;
352 u8 multicast_querier:1;
353 u8 multicast_query_use_ifaddr:1;
354 u8 has_ipv6_addr:1;
355 u8 multicast_stats_enabled:1;
356
357 u32 hash_elasticity;
358 u32 hash_max;
359
360 u32 multicast_last_member_count;
361 u32 multicast_startup_query_count;
362
363 u8 multicast_igmp_version;
364
365 unsigned long multicast_last_member_interval;
366 unsigned long multicast_membership_interval;
367 unsigned long multicast_querier_interval;
368 unsigned long multicast_query_interval;
369 unsigned long multicast_query_response_interval;
370 unsigned long multicast_startup_query_interval;
371
372 spinlock_t multicast_lock;
373 struct net_bridge_mdb_htable __rcu *mdb;
374 struct hlist_head router_list;
375
376 struct timer_list multicast_router_timer;
377 struct bridge_mcast_other_query ip4_other_query;
378 struct bridge_mcast_own_query ip4_own_query;
379 struct bridge_mcast_querier ip4_querier;
380 struct bridge_mcast_stats __percpu *mcast_stats;
381#if IS_ENABLED(CONFIG_IPV6)
382 struct bridge_mcast_other_query ip6_other_query;
383 struct bridge_mcast_own_query ip6_own_query;
384 struct bridge_mcast_querier ip6_querier;
385 u8 multicast_mld_version;
386#endif
387#endif
388
389 struct timer_list hello_timer;
390 struct timer_list tcn_timer;
391 struct timer_list topology_change_timer;
392 struct delayed_work gc_work;
393 struct kobject *ifobj;
394 u32 auto_cnt;
395
396#ifdef CONFIG_NET_SWITCHDEV
397 int offload_fwd_mark;
398#endif
399};
400
401struct br_input_skb_cb {
402 struct net_device *brdev;
403
404#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
405 int igmp;
406 int mrouters_only;
407#endif
408
409 bool proxyarp_replied;
410
411#ifdef CONFIG_BRIDGE_VLAN_FILTERING
412 bool vlan_filtered;
413#endif
414
415#ifdef CONFIG_NET_SWITCHDEV
416 int offload_fwd_mark;
417#endif
418};
419
420#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
421
422#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
423# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
424#else
425# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
426#endif
427
428#define br_printk(level, br, format, args...) \
429 printk(level "%s: " format, (br)->dev->name, ##args)
430
431#define br_err(__br, format, args...) \
432 br_printk(KERN_ERR, __br, format, ##args)
433#define br_warn(__br, format, args...) \
434 br_printk(KERN_WARNING, __br, format, ##args)
435#define br_notice(__br, format, args...) \
436 br_printk(KERN_NOTICE, __br, format, ##args)
437#define br_info(__br, format, args...) \
438 br_printk(KERN_INFO, __br, format, ##args)
439
440#define br_debug(br, format, args...) \
441 pr_debug("%s: " format, (br)->dev->name, ##args)
442
443
444static inline int br_is_root_bridge(const struct net_bridge *br)
445{
446 return !memcmp(&br->bridge_id, &br->designated_root, 8);
447}
448
449
450static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
451{
452 return v->flags & BRIDGE_VLAN_INFO_MASTER;
453}
454
455
456static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
457{
458 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
459}
460
461
462static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
463{
464 if (br_vlan_is_master(v)) {
465 if (br_vlan_is_brentry(v))
466 return true;
467 else
468 return false;
469 }
470
471 return true;
472}
473
474
475void br_dev_setup(struct net_device *dev);
476void br_dev_delete(struct net_device *dev, struct list_head *list);
477netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
478#ifdef CONFIG_NET_POLL_CONTROLLER
479static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
480 struct sk_buff *skb)
481{
482 struct netpoll *np = p->np;
483
484 if (np)
485 netpoll_send_skb(np, skb);
486}
487
488int br_netpoll_enable(struct net_bridge_port *p);
489void br_netpoll_disable(struct net_bridge_port *p);
490#else
491static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
492 struct sk_buff *skb)
493{
494}
495
496static inline int br_netpoll_enable(struct net_bridge_port *p)
497{
498 return 0;
499}
500
501static inline void br_netpoll_disable(struct net_bridge_port *p)
502{
503}
504#endif
505
506
507int br_fdb_init(void);
508void br_fdb_fini(void);
509void br_fdb_flush(struct net_bridge *br);
510void br_fdb_find_delete_local(struct net_bridge *br,
511 const struct net_bridge_port *p,
512 const unsigned char *addr, u16 vid);
513void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
514void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
515void br_fdb_cleanup(struct work_struct *work);
516void br_fdb_delete_by_port(struct net_bridge *br,
517 const struct net_bridge_port *p, u16 vid, int do_all);
518struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
519 const unsigned char *addr,
520 __u16 vid);
521int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
522int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
523 unsigned long off);
524int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
525 const unsigned char *addr, u16 vid);
526void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
527 const unsigned char *addr, u16 vid, bool added_by_user);
528
529int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
530 struct net_device *dev, const unsigned char *addr, u16 vid);
531int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
532 const unsigned char *addr, u16 vid, u16 nlh_flags);
533int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
534 struct net_device *dev, struct net_device *fdev, int *idx);
535int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
536void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
537int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
538 const unsigned char *addr, u16 vid);
539int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
540 const unsigned char *addr, u16 vid);
541void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
542 const unsigned char *addr, u16 vid);
543
544
545enum br_pkt_type {
546 BR_PKT_UNICAST,
547 BR_PKT_MULTICAST,
548 BR_PKT_BROADCAST
549};
550int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
551void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
552 bool local_rcv, bool local_orig);
553int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
554void br_flood(struct net_bridge *br, struct sk_buff *skb,
555 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
556
557
558void br_port_carrier_check(struct net_bridge_port *p);
559int br_add_bridge(struct net *net, const char *name);
560int br_del_bridge(struct net *net, const char *name);
561int br_add_if(struct net_bridge *br, struct net_device *dev);
562int br_del_if(struct net_bridge *br, struct net_device *dev);
563int br_min_mtu(const struct net_bridge *br);
564netdev_features_t br_features_recompute(struct net_bridge *br,
565 netdev_features_t features);
566void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
567void br_manage_promisc(struct net_bridge *br);
568
569
570int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
571rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
572
573static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
574{
575 return rcu_dereference(dev->rx_handler) == br_handle_frame;
576}
577
578static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
579{
580 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
581}
582
583
584int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
585int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
586 void __user *arg);
587
588
589#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
590extern unsigned int br_mdb_rehash_seq;
591int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
592 struct sk_buff *skb, u16 vid);
593struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
594 struct sk_buff *skb, u16 vid);
595int br_multicast_add_port(struct net_bridge_port *port);
596void br_multicast_del_port(struct net_bridge_port *port);
597void br_multicast_enable_port(struct net_bridge_port *port);
598void br_multicast_disable_port(struct net_bridge_port *port);
599void br_multicast_init(struct net_bridge *br);
600void br_multicast_open(struct net_bridge *br);
601void br_multicast_stop(struct net_bridge *br);
602void br_multicast_dev_del(struct net_bridge *br);
603void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
604 struct sk_buff *skb, bool local_rcv, bool local_orig);
605int br_multicast_set_router(struct net_bridge *br, unsigned long val);
606int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
607int br_multicast_toggle(struct net_bridge *br, unsigned long val);
608int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
609int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
610int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
611#if IS_ENABLED(CONFIG_IPV6)
612int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
613#endif
614struct net_bridge_mdb_entry *
615br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
616struct net_bridge_mdb_entry *
617br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
618 struct br_ip *group);
619void br_multicast_free_pg(struct rcu_head *head);
620struct net_bridge_port_group *
621br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
622 struct net_bridge_port_group __rcu *next,
623 unsigned char flags, const unsigned char *src);
624void br_mdb_init(void);
625void br_mdb_uninit(void);
626void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
627 struct br_ip *group, int type, u8 flags);
628void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
629 int type);
630void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
631 const struct sk_buff *skb, u8 type, u8 dir);
632int br_multicast_init_stats(struct net_bridge *br);
633void br_multicast_uninit_stats(struct net_bridge *br);
634void br_multicast_get_stats(const struct net_bridge *br,
635 const struct net_bridge_port *p,
636 struct br_mcast_stats *dest);
637
638#define mlock_dereference(X, br) \
639 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
640
641static inline bool br_multicast_is_router(struct net_bridge *br)
642{
643 return br->multicast_router == 2 ||
644 (br->multicast_router == 1 &&
645 timer_pending(&br->multicast_router_timer));
646}
647
648static inline bool
649__br_multicast_querier_exists(struct net_bridge *br,
650 struct bridge_mcast_other_query *querier,
651 const bool is_ipv6)
652{
653 bool own_querier_enabled;
654
655 if (br->multicast_querier) {
656 if (is_ipv6 && !br->has_ipv6_addr)
657 own_querier_enabled = false;
658 else
659 own_querier_enabled = true;
660 } else {
661 own_querier_enabled = false;
662 }
663
664 return time_is_before_jiffies(querier->delay_time) &&
665 (own_querier_enabled || timer_pending(&querier->timer));
666}
667
668static inline bool br_multicast_querier_exists(struct net_bridge *br,
669 struct ethhdr *eth)
670{
671 switch (eth->h_proto) {
672 case (htons(ETH_P_IP)):
673 return __br_multicast_querier_exists(br,
674 &br->ip4_other_query, false);
675#if IS_ENABLED(CONFIG_IPV6)
676 case (htons(ETH_P_IPV6)):
677 return __br_multicast_querier_exists(br,
678 &br->ip6_other_query, true);
679#endif
680 default:
681 return false;
682 }
683}
684
685static inline int br_multicast_igmp_type(const struct sk_buff *skb)
686{
687 return BR_INPUT_SKB_CB(skb)->igmp;
688}
689#else
690static inline int br_multicast_rcv(struct net_bridge *br,
691 struct net_bridge_port *port,
692 struct sk_buff *skb,
693 u16 vid)
694{
695 return 0;
696}
697
698static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
699 struct sk_buff *skb, u16 vid)
700{
701 return NULL;
702}
703
704static inline int br_multicast_add_port(struct net_bridge_port *port)
705{
706 return 0;
707}
708
709static inline void br_multicast_del_port(struct net_bridge_port *port)
710{
711}
712
713static inline void br_multicast_enable_port(struct net_bridge_port *port)
714{
715}
716
717static inline void br_multicast_disable_port(struct net_bridge_port *port)
718{
719}
720
721static inline void br_multicast_init(struct net_bridge *br)
722{
723}
724
725static inline void br_multicast_open(struct net_bridge *br)
726{
727}
728
729static inline void br_multicast_stop(struct net_bridge *br)
730{
731}
732
733static inline void br_multicast_dev_del(struct net_bridge *br)
734{
735}
736
737static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
738 struct sk_buff *skb,
739 bool local_rcv, bool local_orig)
740{
741}
742
743static inline bool br_multicast_is_router(struct net_bridge *br)
744{
745 return 0;
746}
747
748static inline bool br_multicast_querier_exists(struct net_bridge *br,
749 struct ethhdr *eth)
750{
751 return false;
752}
753
754static inline void br_mdb_init(void)
755{
756}
757
758static inline void br_mdb_uninit(void)
759{
760}
761
762static inline void br_multicast_count(struct net_bridge *br,
763 const struct net_bridge_port *p,
764 const struct sk_buff *skb,
765 u8 type, u8 dir)
766{
767}
768
769static inline int br_multicast_init_stats(struct net_bridge *br)
770{
771 return 0;
772}
773
774static inline void br_multicast_uninit_stats(struct net_bridge *br)
775{
776}
777
778static inline int br_multicast_igmp_type(const struct sk_buff *skb)
779{
780 return 0;
781}
782#endif
783
784
785#ifdef CONFIG_BRIDGE_VLAN_FILTERING
786bool br_allowed_ingress(const struct net_bridge *br,
787 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
788 u16 *vid);
789bool br_allowed_egress(struct net_bridge_vlan_group *vg,
790 const struct sk_buff *skb);
791bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
792struct sk_buff *br_handle_vlan(struct net_bridge *br,
793 const struct net_bridge_port *port,
794 struct net_bridge_vlan_group *vg,
795 struct sk_buff *skb);
796int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
797int br_vlan_delete(struct net_bridge *br, u16 vid);
798void br_vlan_flush(struct net_bridge *br);
799struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
800void br_recalculate_fwd_mask(struct net_bridge *br);
801int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
802int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
803int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
804int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
805int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
806int br_vlan_init(struct net_bridge *br);
807int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
808int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
809int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
810int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
811void nbp_vlan_flush(struct net_bridge_port *port);
812int nbp_vlan_init(struct net_bridge_port *port);
813int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
814void br_vlan_get_stats(const struct net_bridge_vlan *v,
815 struct br_vlan_stats *stats);
816
817static inline struct net_bridge_vlan_group *br_vlan_group(
818 const struct net_bridge *br)
819{
820 return rtnl_dereference(br->vlgrp);
821}
822
823static inline struct net_bridge_vlan_group *nbp_vlan_group(
824 const struct net_bridge_port *p)
825{
826 return rtnl_dereference(p->vlgrp);
827}
828
829static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
830 const struct net_bridge *br)
831{
832 return rcu_dereference(br->vlgrp);
833}
834
835static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
836 const struct net_bridge_port *p)
837{
838 return rcu_dereference(p->vlgrp);
839}
840
841
842
843
844static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
845{
846 int err = 0;
847
848 if (skb_vlan_tag_present(skb)) {
849 *vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
850 } else {
851 *vid = 0;
852 err = -EINVAL;
853 }
854
855 return err;
856}
857
858static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
859{
860 if (!vg)
861 return 0;
862
863 smp_rmb();
864 return vg->pvid;
865}
866
867#else
868static inline bool br_allowed_ingress(const struct net_bridge *br,
869 struct net_bridge_vlan_group *vg,
870 struct sk_buff *skb,
871 u16 *vid)
872{
873 return true;
874}
875
876static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
877 const struct sk_buff *skb)
878{
879 return true;
880}
881
882static inline bool br_should_learn(struct net_bridge_port *p,
883 struct sk_buff *skb, u16 *vid)
884{
885 return true;
886}
887
888static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
889 const struct net_bridge_port *port,
890 struct net_bridge_vlan_group *vg,
891 struct sk_buff *skb)
892{
893 return skb;
894}
895
896static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
897{
898 return -EOPNOTSUPP;
899}
900
901static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
902{
903 return -EOPNOTSUPP;
904}
905
906static inline void br_vlan_flush(struct net_bridge *br)
907{
908}
909
910static inline void br_recalculate_fwd_mask(struct net_bridge *br)
911{
912}
913
914static inline int br_vlan_init(struct net_bridge *br)
915{
916 return 0;
917}
918
919static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
920{
921 return -EOPNOTSUPP;
922}
923
924static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
925{
926 return -EOPNOTSUPP;
927}
928
929static inline void nbp_vlan_flush(struct net_bridge_port *port)
930{
931}
932
933static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
934 u16 vid)
935{
936 return NULL;
937}
938
939static inline int nbp_vlan_init(struct net_bridge_port *port)
940{
941 return 0;
942}
943
944static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
945{
946 return 0;
947}
948
949static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
950{
951 return 0;
952}
953
954static inline int __br_vlan_filter_toggle(struct net_bridge *br,
955 unsigned long val)
956{
957 return -EOPNOTSUPP;
958}
959
960static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
961 u32 filter_mask)
962{
963 return 0;
964}
965
966static inline struct net_bridge_vlan_group *br_vlan_group(
967 const struct net_bridge *br)
968{
969 return NULL;
970}
971
972static inline struct net_bridge_vlan_group *nbp_vlan_group(
973 const struct net_bridge_port *p)
974{
975 return NULL;
976}
977
978static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
979 const struct net_bridge *br)
980{
981 return NULL;
982}
983
984static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
985 const struct net_bridge_port *p)
986{
987 return NULL;
988}
989
990static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
991 struct br_vlan_stats *stats)
992{
993}
994#endif
995
996struct nf_br_ops {
997 int (*br_dev_xmit_hook)(struct sk_buff *skb);
998};
999extern const struct nf_br_ops __rcu *nf_br_ops;
1000
1001
1002#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1003int br_nf_core_init(void);
1004void br_nf_core_fini(void);
1005void br_netfilter_rtable_init(struct net_bridge *);
1006#else
1007static inline int br_nf_core_init(void) { return 0; }
1008static inline void br_nf_core_fini(void) {}
1009#define br_netfilter_rtable_init(x)
1010#endif
1011
1012
1013void br_set_state(struct net_bridge_port *p, unsigned int state);
1014struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1015void br_init_port(struct net_bridge_port *p);
1016void br_become_designated_port(struct net_bridge_port *p);
1017
1018void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1019int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1020int br_set_hello_time(struct net_bridge *br, unsigned long x);
1021int br_set_max_age(struct net_bridge *br, unsigned long x);
1022int __set_ageing_time(struct net_device *dev, unsigned long t);
1023int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1024
1025
1026
1027void br_stp_enable_bridge(struct net_bridge *br);
1028void br_stp_disable_bridge(struct net_bridge *br);
1029void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1030void br_stp_enable_port(struct net_bridge_port *p);
1031void br_stp_disable_port(struct net_bridge_port *p);
1032bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1033void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1034void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1035int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1036int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1037ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1038
1039
1040struct stp_proto;
1041void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1042 struct net_device *dev);
1043
1044
1045void br_stp_timer_init(struct net_bridge *br);
1046void br_stp_port_timer_init(struct net_bridge_port *p);
1047unsigned long br_timer_value(const struct timer_list *timer);
1048
1049
1050#if IS_ENABLED(CONFIG_ATM_LANE)
1051extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1052#endif
1053
1054
1055extern struct rtnl_link_ops br_link_ops;
1056int br_netlink_init(void);
1057void br_netlink_fini(void);
1058void br_ifinfo_notify(int event, struct net_bridge_port *port);
1059int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1060int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1061int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1062 u32 filter_mask, int nlflags);
1063
1064#ifdef CONFIG_SYSFS
1065
1066extern const struct sysfs_ops brport_sysfs_ops;
1067int br_sysfs_addif(struct net_bridge_port *p);
1068int br_sysfs_renameif(struct net_bridge_port *p);
1069
1070
1071int br_sysfs_addbr(struct net_device *dev);
1072void br_sysfs_delbr(struct net_device *dev);
1073
1074#else
1075
1076static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1077static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1078static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1079static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1080#endif
1081
1082
1083#ifdef CONFIG_NET_SWITCHDEV
1084int nbp_switchdev_mark_set(struct net_bridge_port *p);
1085void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1086 struct sk_buff *skb);
1087bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1088 const struct sk_buff *skb);
1089int br_switchdev_set_port_flag(struct net_bridge_port *p,
1090 unsigned long flags,
1091 unsigned long mask);
1092void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1093 int type);
1094
1095static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1096{
1097 skb->offload_fwd_mark = 0;
1098}
1099#else
1100static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1101{
1102 return 0;
1103}
1104
1105static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1106 struct sk_buff *skb)
1107{
1108}
1109
1110static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1111 const struct sk_buff *skb)
1112{
1113 return true;
1114}
1115
1116static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1117 unsigned long flags,
1118 unsigned long mask)
1119{
1120 return 0;
1121}
1122
1123static inline void
1124br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1125{
1126}
1127
1128static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1129{
1130}
1131#endif
1132
1133#endif
1134