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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
37enum {
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#define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT)
52
53typedef struct bridge_id bridge_id;
54typedef struct mac_addr mac_addr;
55typedef __u16 port_id;
56
57struct bridge_id {
58 unsigned char prio[2];
59 unsigned char addr[ETH_ALEN];
60};
61
62struct mac_addr {
63 unsigned char addr[ETH_ALEN];
64};
65
66#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
67
68struct bridge_mcast_own_query {
69 struct timer_list timer;
70 u32 startup_sent;
71};
72
73
74struct bridge_mcast_other_query {
75 struct timer_list timer;
76 unsigned long delay_time;
77};
78
79
80struct bridge_mcast_querier {
81 struct br_ip addr;
82 struct net_bridge_port __rcu *port;
83};
84
85
86struct bridge_mcast_stats {
87 struct br_mcast_stats mstats;
88 struct u64_stats_sync syncp;
89};
90#endif
91
92struct br_tunnel_info {
93 __be64 tunnel_id;
94 struct metadata_dst __rcu *tunnel_dst;
95};
96
97
98enum {
99 BR_VLFLAG_PER_PORT_STATS = BIT(0),
100 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
101};
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124
125struct net_bridge_vlan {
126 struct rhash_head vnode;
127 struct rhash_head tnode;
128 u16 vid;
129 u16 flags;
130 u16 priv_flags;
131 u8 state;
132 struct pcpu_sw_netstats __percpu *stats;
133 union {
134 struct net_bridge *br;
135 struct net_bridge_port *port;
136 };
137 union {
138 refcount_t refcnt;
139 struct net_bridge_vlan *brvlan;
140 };
141
142 struct br_tunnel_info tinfo;
143
144 struct list_head vlist;
145
146 struct rcu_head rcu;
147};
148
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162
163
164struct net_bridge_vlan_group {
165 struct rhashtable vlan_hash;
166 struct rhashtable tunnel_hash;
167 struct list_head vlan_list;
168 u16 num_vlans;
169 u16 pvid;
170 u8 pvid_state;
171};
172
173
174enum {
175 BR_FDB_LOCAL,
176 BR_FDB_STATIC,
177 BR_FDB_STICKY,
178 BR_FDB_ADDED_BY_USER,
179 BR_FDB_ADDED_BY_EXT_LEARN,
180 BR_FDB_OFFLOADED,
181 BR_FDB_NOTIFY,
182 BR_FDB_NOTIFY_INACTIVE
183};
184
185struct net_bridge_fdb_key {
186 mac_addr addr;
187 u16 vlan_id;
188};
189
190struct net_bridge_fdb_entry {
191 struct rhash_head rhnode;
192 struct net_bridge_port *dst;
193
194 struct net_bridge_fdb_key key;
195 struct hlist_node fdb_node;
196 unsigned long flags;
197
198
199 unsigned long updated ____cacheline_aligned_in_smp;
200 unsigned long used;
201
202 struct rcu_head rcu;
203};
204
205#define MDB_PG_FLAGS_PERMANENT BIT(0)
206#define MDB_PG_FLAGS_OFFLOAD BIT(1)
207#define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
208#define MDB_PG_FLAGS_STAR_EXCL BIT(3)
209#define MDB_PG_FLAGS_BLOCKED BIT(4)
210
211#define PG_SRC_ENT_LIMIT 32
212
213#define BR_SGRP_F_DELETE BIT(0)
214#define BR_SGRP_F_SEND BIT(1)
215#define BR_SGRP_F_INSTALLED BIT(2)
216
217struct net_bridge_mcast_gc {
218 struct hlist_node gc_node;
219 void (*destroy)(struct net_bridge_mcast_gc *gc);
220};
221
222struct net_bridge_group_src {
223 struct hlist_node node;
224
225 struct br_ip addr;
226 struct net_bridge_port_group *pg;
227 u8 flags;
228 u8 src_query_rexmit_cnt;
229 struct timer_list timer;
230
231 struct net_bridge *br;
232 struct net_bridge_mcast_gc mcast_gc;
233 struct rcu_head rcu;
234};
235
236struct net_bridge_port_group_sg_key {
237 struct net_bridge_port *port;
238 struct br_ip addr;
239};
240
241struct net_bridge_port_group {
242 struct net_bridge_port_group __rcu *next;
243 struct net_bridge_port_group_sg_key key;
244 unsigned char eth_addr[ETH_ALEN] __aligned(2);
245 unsigned char flags;
246 unsigned char filter_mode;
247 unsigned char grp_query_rexmit_cnt;
248 unsigned char rt_protocol;
249
250 struct hlist_head src_list;
251 unsigned int src_ents;
252 struct timer_list timer;
253 struct timer_list rexmit_timer;
254 struct hlist_node mglist;
255 struct rb_root eht_set_tree;
256 struct rb_root eht_host_tree;
257
258 struct rhash_head rhnode;
259 struct net_bridge_mcast_gc mcast_gc;
260 struct rcu_head rcu;
261};
262
263struct net_bridge_mdb_entry {
264 struct rhash_head rhnode;
265 struct net_bridge *br;
266 struct net_bridge_port_group __rcu *ports;
267 struct br_ip addr;
268 bool host_joined;
269
270 struct timer_list timer;
271 struct hlist_node mdb_node;
272
273 struct net_bridge_mcast_gc mcast_gc;
274 struct rcu_head rcu;
275};
276
277struct net_bridge_port {
278 struct net_bridge *br;
279 struct net_device *dev;
280 struct list_head list;
281
282 unsigned long flags;
283#ifdef CONFIG_BRIDGE_VLAN_FILTERING
284 struct net_bridge_vlan_group __rcu *vlgrp;
285#endif
286 struct net_bridge_port __rcu *backup_port;
287
288
289 u8 priority;
290 u8 state;
291 u16 port_no;
292 unsigned char topology_change_ack;
293 unsigned char config_pending;
294 port_id port_id;
295 port_id designated_port;
296 bridge_id designated_root;
297 bridge_id designated_bridge;
298 u32 path_cost;
299 u32 designated_cost;
300 unsigned long designated_age;
301
302 struct timer_list forward_delay_timer;
303 struct timer_list hold_timer;
304 struct timer_list message_age_timer;
305 struct kobject kobj;
306 struct rcu_head rcu;
307
308#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
309 struct bridge_mcast_own_query ip4_own_query;
310 struct timer_list ip4_mc_router_timer;
311 struct hlist_node ip4_rlist;
312#if IS_ENABLED(CONFIG_IPV6)
313 struct bridge_mcast_own_query ip6_own_query;
314 struct timer_list ip6_mc_router_timer;
315 struct hlist_node ip6_rlist;
316#endif
317 u32 multicast_eht_hosts_limit;
318 u32 multicast_eht_hosts_cnt;
319 unsigned char multicast_router;
320 struct bridge_mcast_stats __percpu *mcast_stats;
321 struct hlist_head mglist;
322#endif
323
324#ifdef CONFIG_SYSFS
325 char sysfs_name[IFNAMSIZ];
326#endif
327
328#ifdef CONFIG_NET_POLL_CONTROLLER
329 struct netpoll *np;
330#endif
331#ifdef CONFIG_NET_SWITCHDEV
332 int offload_fwd_mark;
333#endif
334 u16 group_fwd_mask;
335 u16 backup_redirected_cnt;
336
337 struct bridge_stp_xstats stp_xstats;
338};
339
340#define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
341
342#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
343#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
344
345static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
346{
347 return rcu_dereference(dev->rx_handler_data);
348}
349
350static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
351{
352 return netif_is_bridge_port(dev) ?
353 rtnl_dereference(dev->rx_handler_data) : NULL;
354}
355
356static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
357{
358 return netif_is_bridge_port(dev) ?
359 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
360}
361
362enum net_bridge_opts {
363 BROPT_VLAN_ENABLED,
364 BROPT_VLAN_STATS_ENABLED,
365 BROPT_NF_CALL_IPTABLES,
366 BROPT_NF_CALL_IP6TABLES,
367 BROPT_NF_CALL_ARPTABLES,
368 BROPT_GROUP_ADDR_SET,
369 BROPT_MULTICAST_ENABLED,
370 BROPT_MULTICAST_QUERIER,
371 BROPT_MULTICAST_QUERY_USE_IFADDR,
372 BROPT_MULTICAST_STATS_ENABLED,
373 BROPT_HAS_IPV6_ADDR,
374 BROPT_NEIGH_SUPPRESS_ENABLED,
375 BROPT_MTU_SET_BY_USER,
376 BROPT_VLAN_STATS_PER_PORT,
377 BROPT_NO_LL_LEARN,
378 BROPT_VLAN_BRIDGE_BINDING,
379};
380
381struct net_bridge {
382 spinlock_t lock;
383 spinlock_t hash_lock;
384 struct hlist_head frame_type_list;
385 struct net_device *dev;
386 unsigned long options;
387
388#ifdef CONFIG_BRIDGE_VLAN_FILTERING
389 __be16 vlan_proto;
390 u16 default_pvid;
391 struct net_bridge_vlan_group __rcu *vlgrp;
392#endif
393
394 struct rhashtable fdb_hash_tbl;
395 struct list_head port_list;
396#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
397 union {
398 struct rtable fake_rtable;
399 struct rt6_info fake_rt6_info;
400 };
401#endif
402 u16 group_fwd_mask;
403 u16 group_fwd_mask_required;
404
405
406 bridge_id designated_root;
407 bridge_id bridge_id;
408 unsigned char topology_change;
409 unsigned char topology_change_detected;
410 u16 root_port;
411 unsigned long max_age;
412 unsigned long hello_time;
413 unsigned long forward_delay;
414 unsigned long ageing_time;
415 unsigned long bridge_max_age;
416 unsigned long bridge_hello_time;
417 unsigned long bridge_forward_delay;
418 unsigned long bridge_ageing_time;
419 u32 root_path_cost;
420
421 u8 group_addr[ETH_ALEN];
422
423 enum {
424 BR_NO_STP,
425 BR_KERNEL_STP,
426 BR_USER_STP,
427 } stp_enabled;
428
429#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
430
431 u32 hash_max;
432
433 u32 multicast_last_member_count;
434 u32 multicast_startup_query_count;
435
436 u8 multicast_igmp_version;
437 u8 multicast_router;
438#if IS_ENABLED(CONFIG_IPV6)
439 u8 multicast_mld_version;
440#endif
441 spinlock_t multicast_lock;
442 unsigned long multicast_last_member_interval;
443 unsigned long multicast_membership_interval;
444 unsigned long multicast_querier_interval;
445 unsigned long multicast_query_interval;
446 unsigned long multicast_query_response_interval;
447 unsigned long multicast_startup_query_interval;
448
449 struct rhashtable mdb_hash_tbl;
450 struct rhashtable sg_port_tbl;
451
452 struct hlist_head mcast_gc_list;
453 struct hlist_head mdb_list;
454
455 struct hlist_head ip4_mc_router_list;
456 struct timer_list ip4_mc_router_timer;
457 struct bridge_mcast_other_query ip4_other_query;
458 struct bridge_mcast_own_query ip4_own_query;
459 struct bridge_mcast_querier ip4_querier;
460 struct bridge_mcast_stats __percpu *mcast_stats;
461#if IS_ENABLED(CONFIG_IPV6)
462 struct hlist_head ip6_mc_router_list;
463 struct timer_list ip6_mc_router_timer;
464 struct bridge_mcast_other_query ip6_other_query;
465 struct bridge_mcast_own_query ip6_own_query;
466 struct bridge_mcast_querier ip6_querier;
467#endif
468 struct work_struct mcast_gc_work;
469#endif
470
471 struct timer_list hello_timer;
472 struct timer_list tcn_timer;
473 struct timer_list topology_change_timer;
474 struct delayed_work gc_work;
475 struct kobject *ifobj;
476 u32 auto_cnt;
477
478#ifdef CONFIG_NET_SWITCHDEV
479 int offload_fwd_mark;
480#endif
481 struct hlist_head fdb_list;
482
483#if IS_ENABLED(CONFIG_BRIDGE_MRP)
484 struct hlist_head mrp_list;
485#endif
486#if IS_ENABLED(CONFIG_BRIDGE_CFM)
487 struct hlist_head mep_list;
488#endif
489};
490
491struct br_input_skb_cb {
492 struct net_device *brdev;
493
494 u16 frag_max_size;
495#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
496 u8 igmp;
497 u8 mrouters_only:1;
498#endif
499 u8 proxyarp_replied:1;
500 u8 src_port_isolated:1;
501#ifdef CONFIG_BRIDGE_VLAN_FILTERING
502 u8 vlan_filtered:1;
503#endif
504#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
505 u8 br_netfilter_broute:1;
506#endif
507
508#ifdef CONFIG_NET_SWITCHDEV
509 int offload_fwd_mark;
510#endif
511};
512
513#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
514
515#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
516# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
517#else
518# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
519#endif
520
521#define br_printk(level, br, format, args...) \
522 printk(level "%s: " format, (br)->dev->name, ##args)
523
524#define br_err(__br, format, args...) \
525 br_printk(KERN_ERR, __br, format, ##args)
526#define br_warn(__br, format, args...) \
527 br_printk(KERN_WARNING, __br, format, ##args)
528#define br_notice(__br, format, args...) \
529 br_printk(KERN_NOTICE, __br, format, ##args)
530#define br_info(__br, format, args...) \
531 br_printk(KERN_INFO, __br, format, ##args)
532
533#define br_debug(br, format, args...) \
534 pr_debug("%s: " format, (br)->dev->name, ##args)
535
536
537static inline int br_is_root_bridge(const struct net_bridge *br)
538{
539 return !memcmp(&br->bridge_id, &br->designated_root, 8);
540}
541
542
543static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
544{
545 return v->flags & BRIDGE_VLAN_INFO_MASTER;
546}
547
548
549static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
550{
551 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
552}
553
554
555static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
556{
557 if (br_vlan_is_master(v)) {
558 if (br_vlan_is_brentry(v))
559 return true;
560 else
561 return false;
562 }
563
564 return true;
565}
566
567static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
568{
569 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
570}
571
572static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
573{
574 bool ret = vid > 0 && vid < VLAN_VID_MASK;
575
576 if (!ret)
577 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
578
579 return ret;
580}
581
582static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
583 const struct bridge_vlan_info *last,
584 struct netlink_ext_ack *extack)
585{
586
587 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
588 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
589 return false;
590 }
591
592
593
594
595
596 if (last) {
597 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
598 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
599 return false;
600 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
601 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
602 return false;
603 } else if (cur->vid <= last->vid) {
604 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
605 return false;
606 }
607 }
608
609
610 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
611 BRIDGE_VLAN_INFO_RANGE_END))) {
612 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
613 return false;
614 }
615
616 return true;
617}
618
619static inline int br_afspec_cmd_to_rtm(int cmd)
620{
621 switch (cmd) {
622 case RTM_SETLINK:
623 return RTM_NEWVLAN;
624 case RTM_DELLINK:
625 return RTM_DELVLAN;
626 }
627
628 return 0;
629}
630
631static inline int br_opt_get(const struct net_bridge *br,
632 enum net_bridge_opts opt)
633{
634 return test_bit(opt, &br->options);
635}
636
637int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
638 struct netlink_ext_ack *extack);
639int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
640int br_boolopt_multi_toggle(struct net_bridge *br,
641 struct br_boolopt_multi *bm,
642 struct netlink_ext_ack *extack);
643void br_boolopt_multi_get(const struct net_bridge *br,
644 struct br_boolopt_multi *bm);
645void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
646
647
648void br_dev_setup(struct net_device *dev);
649void br_dev_delete(struct net_device *dev, struct list_head *list);
650netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
651#ifdef CONFIG_NET_POLL_CONTROLLER
652static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
653 struct sk_buff *skb)
654{
655 netpoll_send_skb(p->np, skb);
656}
657
658int br_netpoll_enable(struct net_bridge_port *p);
659void br_netpoll_disable(struct net_bridge_port *p);
660#else
661static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
662 struct sk_buff *skb)
663{
664}
665
666static inline int br_netpoll_enable(struct net_bridge_port *p)
667{
668 return 0;
669}
670
671static inline void br_netpoll_disable(struct net_bridge_port *p)
672{
673}
674#endif
675
676
677int br_fdb_init(void);
678void br_fdb_fini(void);
679int br_fdb_hash_init(struct net_bridge *br);
680void br_fdb_hash_fini(struct net_bridge *br);
681void br_fdb_flush(struct net_bridge *br);
682void br_fdb_find_delete_local(struct net_bridge *br,
683 const struct net_bridge_port *p,
684 const unsigned char *addr, u16 vid);
685void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
686void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
687void br_fdb_cleanup(struct work_struct *work);
688void br_fdb_delete_by_port(struct net_bridge *br,
689 const struct net_bridge_port *p, u16 vid, int do_all);
690struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
691 const unsigned char *addr,
692 __u16 vid);
693int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
694int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
695 unsigned long off);
696int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
697 const unsigned char *addr, u16 vid);
698void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
699 const unsigned char *addr, u16 vid, unsigned long flags);
700
701int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
702 struct net_device *dev, const unsigned char *addr, u16 vid);
703int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
704 const unsigned char *addr, u16 vid, u16 nlh_flags,
705 struct netlink_ext_ack *extack);
706int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
707 struct net_device *dev, struct net_device *fdev, int *idx);
708int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
709 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
710 struct netlink_ext_ack *extack);
711int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
712void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
713int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
714 const unsigned char *addr, u16 vid,
715 bool swdev_notify);
716int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
717 const unsigned char *addr, u16 vid,
718 bool swdev_notify);
719void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
720 const unsigned char *addr, u16 vid, bool offloaded);
721
722
723enum br_pkt_type {
724 BR_PKT_UNICAST,
725 BR_PKT_MULTICAST,
726 BR_PKT_BROADCAST
727};
728int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
729void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
730 bool local_rcv, bool local_orig);
731int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
732void br_flood(struct net_bridge *br, struct sk_buff *skb,
733 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
734
735
736static inline bool br_skb_isolated(const struct net_bridge_port *to,
737 const struct sk_buff *skb)
738{
739 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
740 (to->flags & BR_ISOLATED);
741}
742
743
744void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
745int br_add_bridge(struct net *net, const char *name);
746int br_del_bridge(struct net *net, const char *name);
747int br_add_if(struct net_bridge *br, struct net_device *dev,
748 struct netlink_ext_ack *extack);
749int br_del_if(struct net_bridge *br, struct net_device *dev);
750void br_mtu_auto_adjust(struct net_bridge *br);
751netdev_features_t br_features_recompute(struct net_bridge *br,
752 netdev_features_t features);
753void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
754void br_manage_promisc(struct net_bridge *br);
755int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
756
757
758int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
759rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
760
761struct br_frame_type {
762 __be16 type;
763 int (*frame_handler)(struct net_bridge_port *port,
764 struct sk_buff *skb);
765 struct hlist_node list;
766};
767
768void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
769void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
770
771static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
772{
773 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
774}
775
776static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
777{
778 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
779}
780
781static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
782{
783 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
784}
785
786static inline struct net_bridge_port *
787br_port_get_check_rtnl(const struct net_device *dev)
788{
789 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
790}
791
792
793int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
794int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
795 void __user *arg);
796
797
798#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
799int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
800 struct sk_buff *skb, u16 vid);
801struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
802 struct sk_buff *skb, u16 vid);
803int br_multicast_add_port(struct net_bridge_port *port);
804void br_multicast_del_port(struct net_bridge_port *port);
805void br_multicast_enable_port(struct net_bridge_port *port);
806void br_multicast_disable_port(struct net_bridge_port *port);
807void br_multicast_init(struct net_bridge *br);
808void br_multicast_join_snoopers(struct net_bridge *br);
809void br_multicast_leave_snoopers(struct net_bridge *br);
810void br_multicast_open(struct net_bridge *br);
811void br_multicast_stop(struct net_bridge *br);
812void br_multicast_dev_del(struct net_bridge *br);
813void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
814 struct sk_buff *skb, bool local_rcv, bool local_orig);
815int br_multicast_set_router(struct net_bridge *br, unsigned long val);
816int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
817int br_multicast_toggle(struct net_bridge *br, unsigned long val,
818 struct netlink_ext_ack *extack);
819int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
820int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
821int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
822#if IS_ENABLED(CONFIG_IPV6)
823int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
824#endif
825struct net_bridge_mdb_entry *
826br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
827struct net_bridge_mdb_entry *
828br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
829struct net_bridge_port_group *
830br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
831 struct net_bridge_port_group __rcu *next,
832 unsigned char flags, const unsigned char *src,
833 u8 filter_mode, u8 rt_protocol);
834int br_mdb_hash_init(struct net_bridge *br);
835void br_mdb_hash_fini(struct net_bridge *br);
836void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
837 struct net_bridge_port_group *pg, int type);
838void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
839 int type);
840void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
841 struct net_bridge_port_group *pg,
842 struct net_bridge_port_group __rcu **pp);
843void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
844 const struct sk_buff *skb, u8 type, u8 dir);
845int br_multicast_init_stats(struct net_bridge *br);
846void br_multicast_uninit_stats(struct net_bridge *br);
847void br_multicast_get_stats(const struct net_bridge *br,
848 const struct net_bridge_port *p,
849 struct br_mcast_stats *dest);
850void br_mdb_init(void);
851void br_mdb_uninit(void);
852void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
853void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
854void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
855 u8 filter_mode);
856void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
857 struct net_bridge_port_group *sg);
858struct net_bridge_group_src *
859br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
860void br_multicast_del_group_src(struct net_bridge_group_src *src,
861 bool fastleave);
862
863static inline bool br_group_is_l2(const struct br_ip *group)
864{
865 return group->proto == 0;
866}
867
868#define mlock_dereference(X, br) \
869 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
870
871static inline struct hlist_node *
872br_multicast_get_first_rport_node(struct net_bridge *b, struct sk_buff *skb) {
873#if IS_ENABLED(CONFIG_IPV6)
874 if (skb->protocol == htons(ETH_P_IPV6))
875 return rcu_dereference(hlist_first_rcu(&b->ip6_mc_router_list));
876#endif
877 return rcu_dereference(hlist_first_rcu(&b->ip4_mc_router_list));
878}
879
880static inline struct net_bridge_port *
881br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) {
882#if IS_ENABLED(CONFIG_IPV6)
883 if (skb->protocol == htons(ETH_P_IPV6))
884 return hlist_entry_safe(rp, struct net_bridge_port, ip6_rlist);
885#endif
886 return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist);
887}
888
889static inline bool br_ip4_multicast_is_router(struct net_bridge *br)
890{
891 return timer_pending(&br->ip4_mc_router_timer);
892}
893
894static inline bool br_ip6_multicast_is_router(struct net_bridge *br)
895{
896#if IS_ENABLED(CONFIG_IPV6)
897 return timer_pending(&br->ip6_mc_router_timer);
898#else
899 return false;
900#endif
901}
902
903static inline bool
904br_multicast_is_router(struct net_bridge *br, struct sk_buff *skb)
905{
906 switch (br->multicast_router) {
907 case MDB_RTR_TYPE_PERM:
908 return true;
909 case MDB_RTR_TYPE_TEMP_QUERY:
910 if (skb) {
911 if (skb->protocol == htons(ETH_P_IP))
912 return br_ip4_multicast_is_router(br);
913 else if (skb->protocol == htons(ETH_P_IPV6))
914 return br_ip6_multicast_is_router(br);
915 } else {
916 return br_ip4_multicast_is_router(br) ||
917 br_ip6_multicast_is_router(br);
918 }
919 fallthrough;
920 default:
921 return false;
922 }
923}
924
925static inline bool
926__br_multicast_querier_exists(struct net_bridge *br,
927 struct bridge_mcast_other_query *querier,
928 const bool is_ipv6)
929{
930 bool own_querier_enabled;
931
932 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
933 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
934 own_querier_enabled = false;
935 else
936 own_querier_enabled = true;
937 } else {
938 own_querier_enabled = false;
939 }
940
941 return time_is_before_jiffies(querier->delay_time) &&
942 (own_querier_enabled || timer_pending(&querier->timer));
943}
944
945static inline bool br_multicast_querier_exists(struct net_bridge *br,
946 struct ethhdr *eth,
947 const struct net_bridge_mdb_entry *mdb)
948{
949 switch (eth->h_proto) {
950 case (htons(ETH_P_IP)):
951 return __br_multicast_querier_exists(br,
952 &br->ip4_other_query, false);
953#if IS_ENABLED(CONFIG_IPV6)
954 case (htons(ETH_P_IPV6)):
955 return __br_multicast_querier_exists(br,
956 &br->ip6_other_query, true);
957#endif
958 default:
959 return !!mdb && br_group_is_l2(&mdb->addr);
960 }
961}
962
963static inline bool br_multicast_is_star_g(const struct br_ip *ip)
964{
965 switch (ip->proto) {
966 case htons(ETH_P_IP):
967 return ipv4_is_zeronet(ip->src.ip4);
968#if IS_ENABLED(CONFIG_IPV6)
969 case htons(ETH_P_IPV6):
970 return ipv6_addr_any(&ip->src.ip6);
971#endif
972 default:
973 return false;
974 }
975}
976
977static inline bool br_multicast_should_handle_mode(const struct net_bridge *br,
978 __be16 proto)
979{
980 switch (proto) {
981 case htons(ETH_P_IP):
982 return !!(br->multicast_igmp_version == 3);
983#if IS_ENABLED(CONFIG_IPV6)
984 case htons(ETH_P_IPV6):
985 return !!(br->multicast_mld_version == 2);
986#endif
987 default:
988 return false;
989 }
990}
991
992static inline int br_multicast_igmp_type(const struct sk_buff *skb)
993{
994 return BR_INPUT_SKB_CB(skb)->igmp;
995}
996
997static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
998{
999 return br->multicast_last_member_interval *
1000 br->multicast_last_member_count;
1001}
1002
1003static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
1004{
1005
1006 return 2 * br->multicast_query_interval +
1007 br->multicast_query_response_interval;
1008}
1009#else
1010static inline int br_multicast_rcv(struct net_bridge *br,
1011 struct net_bridge_port *port,
1012 struct sk_buff *skb,
1013 u16 vid)
1014{
1015 return 0;
1016}
1017
1018static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
1019 struct sk_buff *skb, u16 vid)
1020{
1021 return NULL;
1022}
1023
1024static inline int br_multicast_add_port(struct net_bridge_port *port)
1025{
1026 return 0;
1027}
1028
1029static inline void br_multicast_del_port(struct net_bridge_port *port)
1030{
1031}
1032
1033static inline void br_multicast_enable_port(struct net_bridge_port *port)
1034{
1035}
1036
1037static inline void br_multicast_disable_port(struct net_bridge_port *port)
1038{
1039}
1040
1041static inline void br_multicast_init(struct net_bridge *br)
1042{
1043}
1044
1045static inline void br_multicast_join_snoopers(struct net_bridge *br)
1046{
1047}
1048
1049static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1050{
1051}
1052
1053static inline void br_multicast_open(struct net_bridge *br)
1054{
1055}
1056
1057static inline void br_multicast_stop(struct net_bridge *br)
1058{
1059}
1060
1061static inline void br_multicast_dev_del(struct net_bridge *br)
1062{
1063}
1064
1065static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1066 struct sk_buff *skb,
1067 bool local_rcv, bool local_orig)
1068{
1069}
1070
1071static inline bool br_multicast_is_router(struct net_bridge *br,
1072 struct sk_buff *skb)
1073{
1074 return false;
1075}
1076
1077static inline bool br_multicast_querier_exists(struct net_bridge *br,
1078 struct ethhdr *eth,
1079 const struct net_bridge_mdb_entry *mdb)
1080{
1081 return false;
1082}
1083
1084static inline void br_mdb_init(void)
1085{
1086}
1087
1088static inline void br_mdb_uninit(void)
1089{
1090}
1091
1092static inline int br_mdb_hash_init(struct net_bridge *br)
1093{
1094 return 0;
1095}
1096
1097static inline void br_mdb_hash_fini(struct net_bridge *br)
1098{
1099}
1100
1101static inline void br_multicast_count(struct net_bridge *br,
1102 const struct net_bridge_port *p,
1103 const struct sk_buff *skb,
1104 u8 type, u8 dir)
1105{
1106}
1107
1108static inline int br_multicast_init_stats(struct net_bridge *br)
1109{
1110 return 0;
1111}
1112
1113static inline void br_multicast_uninit_stats(struct net_bridge *br)
1114{
1115}
1116
1117static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1118{
1119 return 0;
1120}
1121#endif
1122
1123
1124#ifdef CONFIG_BRIDGE_VLAN_FILTERING
1125bool br_allowed_ingress(const struct net_bridge *br,
1126 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1127 u16 *vid, u8 *state);
1128bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1129 const struct sk_buff *skb);
1130bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1131struct sk_buff *br_handle_vlan(struct net_bridge *br,
1132 const struct net_bridge_port *port,
1133 struct net_bridge_vlan_group *vg,
1134 struct sk_buff *skb);
1135int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1136 bool *changed, struct netlink_ext_ack *extack);
1137int br_vlan_delete(struct net_bridge *br, u16 vid);
1138void br_vlan_flush(struct net_bridge *br);
1139struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1140void br_recalculate_fwd_mask(struct net_bridge *br);
1141int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1142 struct netlink_ext_ack *extack);
1143int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1144 struct netlink_ext_ack *extack);
1145int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1146 struct netlink_ext_ack *extack);
1147int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1148int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1149int br_vlan_init(struct net_bridge *br);
1150int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1151 struct netlink_ext_ack *extack);
1152int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1153 struct netlink_ext_ack *extack);
1154int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1155 bool *changed, struct netlink_ext_ack *extack);
1156int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1157void nbp_vlan_flush(struct net_bridge_port *port);
1158int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1159int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1160void br_vlan_get_stats(const struct net_bridge_vlan *v,
1161 struct pcpu_sw_netstats *stats);
1162void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1163int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1164 void *ptr);
1165void br_vlan_rtnl_init(void);
1166void br_vlan_rtnl_uninit(void);
1167void br_vlan_notify(const struct net_bridge *br,
1168 const struct net_bridge_port *p,
1169 u16 vid, u16 vid_range,
1170 int cmd);
1171bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1172 const struct net_bridge_vlan *range_end);
1173
1174void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1175 struct net_device_path_ctx *ctx,
1176 struct net_device_path *path);
1177int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1178 struct net_bridge_port *dst,
1179 struct net_device_path *path);
1180
1181static inline struct net_bridge_vlan_group *br_vlan_group(
1182 const struct net_bridge *br)
1183{
1184 return rtnl_dereference(br->vlgrp);
1185}
1186
1187static inline struct net_bridge_vlan_group *nbp_vlan_group(
1188 const struct net_bridge_port *p)
1189{
1190 return rtnl_dereference(p->vlgrp);
1191}
1192
1193static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1194 const struct net_bridge *br)
1195{
1196 return rcu_dereference(br->vlgrp);
1197}
1198
1199static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1200 const struct net_bridge_port *p)
1201{
1202 return rcu_dereference(p->vlgrp);
1203}
1204
1205
1206
1207
1208static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1209{
1210 int err = 0;
1211
1212 if (skb_vlan_tag_present(skb)) {
1213 *vid = skb_vlan_tag_get_id(skb);
1214 } else {
1215 *vid = 0;
1216 err = -EINVAL;
1217 }
1218
1219 return err;
1220}
1221
1222static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1223{
1224 if (!vg)
1225 return 0;
1226
1227 smp_rmb();
1228 return vg->pvid;
1229}
1230
1231static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1232{
1233 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1234}
1235#else
1236static inline bool br_allowed_ingress(const struct net_bridge *br,
1237 struct net_bridge_vlan_group *vg,
1238 struct sk_buff *skb,
1239 u16 *vid, u8 *state)
1240{
1241 return true;
1242}
1243
1244static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1245 const struct sk_buff *skb)
1246{
1247 return true;
1248}
1249
1250static inline bool br_should_learn(struct net_bridge_port *p,
1251 struct sk_buff *skb, u16 *vid)
1252{
1253 return true;
1254}
1255
1256static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1257 const struct net_bridge_port *port,
1258 struct net_bridge_vlan_group *vg,
1259 struct sk_buff *skb)
1260{
1261 return skb;
1262}
1263
1264static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1265 bool *changed, struct netlink_ext_ack *extack)
1266{
1267 *changed = false;
1268 return -EOPNOTSUPP;
1269}
1270
1271static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1272{
1273 return -EOPNOTSUPP;
1274}
1275
1276static inline void br_vlan_flush(struct net_bridge *br)
1277{
1278}
1279
1280static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1281{
1282}
1283
1284static inline int br_vlan_init(struct net_bridge *br)
1285{
1286 return 0;
1287}
1288
1289static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1290 bool *changed, struct netlink_ext_ack *extack)
1291{
1292 *changed = false;
1293 return -EOPNOTSUPP;
1294}
1295
1296static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1297{
1298 return -EOPNOTSUPP;
1299}
1300
1301static inline void nbp_vlan_flush(struct net_bridge_port *port)
1302{
1303}
1304
1305static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1306 u16 vid)
1307{
1308 return NULL;
1309}
1310
1311static inline int nbp_vlan_init(struct net_bridge_port *port,
1312 struct netlink_ext_ack *extack)
1313{
1314 return 0;
1315}
1316
1317static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1318{
1319 return 0;
1320}
1321
1322static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1323{
1324 return 0;
1325}
1326
1327static inline int br_vlan_filter_toggle(struct net_bridge *br,
1328 unsigned long val,
1329 struct netlink_ext_ack *extack)
1330{
1331 return -EOPNOTSUPP;
1332}
1333
1334static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1335 u32 filter_mask)
1336{
1337 return 0;
1338}
1339
1340static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1341 struct net_device_path_ctx *ctx,
1342 struct net_device_path *path)
1343{
1344}
1345
1346static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1347 struct net_bridge_port *dst,
1348 struct net_device_path *path)
1349{
1350 return 0;
1351}
1352
1353static inline struct net_bridge_vlan_group *br_vlan_group(
1354 const struct net_bridge *br)
1355{
1356 return NULL;
1357}
1358
1359static inline struct net_bridge_vlan_group *nbp_vlan_group(
1360 const struct net_bridge_port *p)
1361{
1362 return NULL;
1363}
1364
1365static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1366 const struct net_bridge *br)
1367{
1368 return NULL;
1369}
1370
1371static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1372 const struct net_bridge_port *p)
1373{
1374 return NULL;
1375}
1376
1377static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1378 struct pcpu_sw_netstats *stats)
1379{
1380}
1381
1382static inline void br_vlan_port_event(struct net_bridge_port *p,
1383 unsigned long event)
1384{
1385}
1386
1387static inline int br_vlan_bridge_event(struct net_device *dev,
1388 unsigned long event, void *ptr)
1389{
1390 return 0;
1391}
1392
1393static inline void br_vlan_rtnl_init(void)
1394{
1395}
1396
1397static inline void br_vlan_rtnl_uninit(void)
1398{
1399}
1400
1401static inline void br_vlan_notify(const struct net_bridge *br,
1402 const struct net_bridge_port *p,
1403 u16 vid, u16 vid_range,
1404 int cmd)
1405{
1406}
1407
1408static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1409 const struct net_bridge_vlan *range_end)
1410{
1411 return true;
1412}
1413#endif
1414
1415
1416#ifdef CONFIG_BRIDGE_VLAN_FILTERING
1417bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1418 const struct net_bridge_vlan *range_end);
1419bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v);
1420size_t br_vlan_opts_nl_size(void);
1421int br_vlan_process_options(const struct net_bridge *br,
1422 const struct net_bridge_port *p,
1423 struct net_bridge_vlan *range_start,
1424 struct net_bridge_vlan *range_end,
1425 struct nlattr **tb,
1426 struct netlink_ext_ack *extack);
1427
1428
1429static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1430{
1431 return READ_ONCE(v->state);
1432}
1433
1434static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1435{
1436 WRITE_ONCE(v->state, state);
1437}
1438
1439static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1440{
1441 return READ_ONCE(vg->pvid_state);
1442}
1443
1444static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1445 u8 state)
1446{
1447 WRITE_ONCE(vg->pvid_state, state);
1448}
1449
1450
1451static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1452{
1453 switch (state) {
1454 case BR_STATE_LEARNING:
1455 return learn_allow;
1456 case BR_STATE_FORWARDING:
1457 return true;
1458 default:
1459 return false;
1460 }
1461}
1462#endif
1463
1464struct nf_br_ops {
1465 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1466};
1467extern const struct nf_br_ops __rcu *nf_br_ops;
1468
1469
1470#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1471int br_nf_core_init(void);
1472void br_nf_core_fini(void);
1473void br_netfilter_rtable_init(struct net_bridge *);
1474#else
1475static inline int br_nf_core_init(void) { return 0; }
1476static inline void br_nf_core_fini(void) {}
1477#define br_netfilter_rtable_init(x)
1478#endif
1479
1480
1481void br_set_state(struct net_bridge_port *p, unsigned int state);
1482struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1483void br_init_port(struct net_bridge_port *p);
1484void br_become_designated_port(struct net_bridge_port *p);
1485
1486void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1487int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1488int br_set_hello_time(struct net_bridge *br, unsigned long x);
1489int br_set_max_age(struct net_bridge *br, unsigned long x);
1490int __set_ageing_time(struct net_device *dev, unsigned long t);
1491int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1492
1493
1494
1495void br_stp_enable_bridge(struct net_bridge *br);
1496void br_stp_disable_bridge(struct net_bridge *br);
1497int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1498 struct netlink_ext_ack *extack);
1499void br_stp_enable_port(struct net_bridge_port *p);
1500void br_stp_disable_port(struct net_bridge_port *p);
1501bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1502void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1503void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1504int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1505int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1506ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1507
1508
1509struct stp_proto;
1510void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1511 struct net_device *dev);
1512
1513
1514void br_stp_timer_init(struct net_bridge *br);
1515void br_stp_port_timer_init(struct net_bridge_port *p);
1516unsigned long br_timer_value(const struct timer_list *timer);
1517
1518
1519#if IS_ENABLED(CONFIG_ATM_LANE)
1520extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1521#endif
1522
1523
1524#if IS_ENABLED(CONFIG_BRIDGE_MRP)
1525int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1526 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1527bool br_mrp_enabled(struct net_bridge *br);
1528void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1529int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1530#else
1531static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1532 struct nlattr *attr, int cmd,
1533 struct netlink_ext_ack *extack)
1534{
1535 return -EOPNOTSUPP;
1536}
1537
1538static inline bool br_mrp_enabled(struct net_bridge *br)
1539{
1540 return false;
1541}
1542
1543static inline void br_mrp_port_del(struct net_bridge *br,
1544 struct net_bridge_port *p)
1545{
1546}
1547
1548static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
1549{
1550 return 0;
1551}
1552
1553#endif
1554
1555
1556#if IS_ENABLED(CONFIG_BRIDGE_CFM)
1557int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1558 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1559bool br_cfm_created(struct net_bridge *br);
1560void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
1561int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
1562int br_cfm_status_fill_info(struct sk_buff *skb,
1563 struct net_bridge *br,
1564 bool getlink);
1565int br_cfm_mep_count(struct net_bridge *br, u32 *count);
1566int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
1567#else
1568static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1569 struct nlattr *attr, int cmd,
1570 struct netlink_ext_ack *extack)
1571{
1572 return -EOPNOTSUPP;
1573}
1574
1575static inline bool br_cfm_created(struct net_bridge *br)
1576{
1577 return false;
1578}
1579
1580static inline void br_cfm_port_del(struct net_bridge *br,
1581 struct net_bridge_port *p)
1582{
1583}
1584
1585static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
1586{
1587 return -EOPNOTSUPP;
1588}
1589
1590static inline int br_cfm_status_fill_info(struct sk_buff *skb,
1591 struct net_bridge *br,
1592 bool getlink)
1593{
1594 return -EOPNOTSUPP;
1595}
1596
1597static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
1598{
1599 return -EOPNOTSUPP;
1600}
1601
1602static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
1603{
1604 return -EOPNOTSUPP;
1605}
1606#endif
1607
1608
1609extern struct rtnl_link_ops br_link_ops;
1610int br_netlink_init(void);
1611void br_netlink_fini(void);
1612void br_ifinfo_notify(int event, const struct net_bridge *br,
1613 const struct net_bridge_port *port);
1614void br_info_notify(int event, const struct net_bridge *br,
1615 const struct net_bridge_port *port, u32 filter);
1616int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1617 struct netlink_ext_ack *extack);
1618int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1619int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1620 u32 filter_mask, int nlflags);
1621int br_process_vlan_info(struct net_bridge *br,
1622 struct net_bridge_port *p, int cmd,
1623 struct bridge_vlan_info *vinfo_curr,
1624 struct bridge_vlan_info **vinfo_last,
1625 bool *changed,
1626 struct netlink_ext_ack *extack);
1627
1628#ifdef CONFIG_SYSFS
1629
1630extern const struct sysfs_ops brport_sysfs_ops;
1631int br_sysfs_addif(struct net_bridge_port *p);
1632int br_sysfs_renameif(struct net_bridge_port *p);
1633
1634
1635int br_sysfs_addbr(struct net_device *dev);
1636void br_sysfs_delbr(struct net_device *dev);
1637
1638#else
1639
1640static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1641static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1642static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1643static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1644#endif
1645
1646
1647#ifdef CONFIG_NET_SWITCHDEV
1648int nbp_switchdev_mark_set(struct net_bridge_port *p);
1649void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1650 struct sk_buff *skb);
1651bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1652 const struct sk_buff *skb);
1653int br_switchdev_set_port_flag(struct net_bridge_port *p,
1654 unsigned long flags,
1655 unsigned long mask,
1656 struct netlink_ext_ack *extack);
1657void br_switchdev_fdb_notify(struct net_bridge *br,
1658 const struct net_bridge_fdb_entry *fdb, int type);
1659int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1660 struct netlink_ext_ack *extack);
1661int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1662
1663static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1664{
1665 skb->offload_fwd_mark = 0;
1666}
1667#else
1668static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1669{
1670 return 0;
1671}
1672
1673static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1674 struct sk_buff *skb)
1675{
1676}
1677
1678static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1679 const struct sk_buff *skb)
1680{
1681 return true;
1682}
1683
1684static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1685 unsigned long flags,
1686 unsigned long mask,
1687 struct netlink_ext_ack *extack)
1688{
1689 return 0;
1690}
1691
1692static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1693 u16 vid, u16 flags,
1694 struct netlink_ext_ack *extack)
1695{
1696 return -EOPNOTSUPP;
1697}
1698
1699static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1700{
1701 return -EOPNOTSUPP;
1702}
1703
1704static inline void
1705br_switchdev_fdb_notify(struct net_bridge *br,
1706 const struct net_bridge_fdb_entry *fdb, int type)
1707{
1708}
1709
1710static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1711{
1712}
1713#endif
1714
1715
1716void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1717void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1718 u16 vid, struct net_bridge_port *p);
1719void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1720 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1721struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
1722#endif
1723