1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Linux ethernet bridge
6 * Lennert Buytenhek <buytenh@gnu.org>
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>
22 #define BR_HASH_BITS 8
23 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25 #define BR_HOLD_TIME (1*HZ)
27 #define BR_PORT_BITS 10
28 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096
32 #define BR_VERSION "2.3"
34 /* Control of forwarding link local multicast */
35 #define BR_GROUPFWD_DEFAULT 0
36 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
38 BR_GROUPFWD_STP = BIT(0),
39 BR_GROUPFWD_MACPAUSE = BIT(1),
40 BR_GROUPFWD_LACP = BIT(2),
43 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \
45 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
46 #define BR_GROUPFWD_8021AD 0xB801u
48 /* Path to usermode spanning tree program */
49 #define BR_STP_PROG "/sbin/bridge-stp"
51 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT)
53 typedef struct bridge_id bridge_id;
54 typedef struct mac_addr mac_addr;
55 typedef __u16 port_id;
58 unsigned char prio[2];
59 unsigned char addr[ETH_ALEN];
63 unsigned char addr[ETH_ALEN];
66 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
68 struct bridge_mcast_own_query {
69 struct timer_list timer;
74 struct bridge_mcast_other_query {
75 struct timer_list timer;
76 unsigned long delay_time;
79 /* selected querier */
80 struct bridge_mcast_querier {
82 struct net_bridge_port __rcu *port;
85 /* IGMP/MLD statistics */
86 struct bridge_mcast_stats {
87 struct br_mcast_stats mstats;
88 struct u64_stats_sync syncp;
92 struct br_vlan_stats {
97 struct u64_stats_sync syncp;
100 struct br_tunnel_info {
102 struct metadata_dst *tunnel_dst;
105 /* private vlan flags */
107 BR_VLFLAG_PER_PORT_STATS = BIT(0),
108 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
112 * struct net_bridge_vlan - per-vlan entry
114 * @vnode: rhashtable member
116 * @flags: bridge vlan flags
117 * @priv_flags: private (in-kernel) bridge vlan flags
118 * @state: STP state (e.g. blocking, learning, forwarding)
119 * @stats: per-cpu VLAN statistics
120 * @br: if MASTER flag set, this points to a bridge struct
121 * @port: if MASTER flag unset, this points to a port struct
122 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
123 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
124 * for this VLAN entry
125 * @vlist: sorted list of VLAN entries
126 * @rcu: used for entry destruction
128 * This structure is shared between the global per-VLAN entries contained in
129 * the bridge rhashtable and the local per-port per-VLAN entries contained in
130 * the port's rhashtable. The union entries should be interpreted depending on
131 * the entry flags that are set.
133 struct net_bridge_vlan {
134 struct rhash_head vnode;
135 struct rhash_head tnode;
140 struct br_vlan_stats __percpu *stats;
142 struct net_bridge *br;
143 struct net_bridge_port *port;
147 struct net_bridge_vlan *brvlan;
150 struct br_tunnel_info tinfo;
152 struct list_head vlist;
158 * struct net_bridge_vlan_group
160 * @vlan_hash: VLAN entry rhashtable
161 * @vlan_list: sorted VLAN entry list
162 * @num_vlans: number of total VLAN entries
163 * @pvid: PVID VLAN id
164 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking)
166 * IMPORTANT: Be careful when checking if there're VLAN entries using list
167 * primitives because the bridge can have entries in its list which
168 * are just for global context but not for filtering, i.e. they have
169 * the master flag set but not the brentry flag. If you have to check
170 * if there're "real" entries in the bridge please test @num_vlans
172 struct net_bridge_vlan_group {
173 struct rhashtable vlan_hash;
174 struct rhashtable tunnel_hash;
175 struct list_head vlan_list;
181 /* bridge fdb flags */
186 BR_FDB_ADDED_BY_USER,
187 BR_FDB_ADDED_BY_EXT_LEARN,
190 BR_FDB_NOTIFY_INACTIVE
193 struct net_bridge_fdb_key {
198 struct net_bridge_fdb_entry {
199 struct rhash_head rhnode;
200 struct net_bridge_port *dst;
202 struct net_bridge_fdb_key key;
203 struct hlist_node fdb_node;
206 /* write-heavy members should not affect lookups */
207 unsigned long updated ____cacheline_aligned_in_smp;
213 #define MDB_PG_FLAGS_PERMANENT BIT(0)
214 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
215 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
216 #define MDB_PG_FLAGS_STAR_EXCL BIT(3)
217 #define MDB_PG_FLAGS_BLOCKED BIT(4)
219 #define PG_SRC_ENT_LIMIT 32
221 #define BR_SGRP_F_DELETE BIT(0)
222 #define BR_SGRP_F_SEND BIT(1)
223 #define BR_SGRP_F_INSTALLED BIT(2)
225 struct net_bridge_mcast_gc {
226 struct hlist_node gc_node;
227 void (*destroy)(struct net_bridge_mcast_gc *gc);
230 struct net_bridge_group_src {
231 struct hlist_node node;
234 struct net_bridge_port_group *pg;
236 u8 src_query_rexmit_cnt;
237 struct timer_list timer;
239 struct net_bridge *br;
240 struct net_bridge_mcast_gc mcast_gc;
244 struct net_bridge_port_group_sg_key {
245 struct net_bridge_port *port;
249 struct net_bridge_port_group {
250 struct net_bridge_port_group __rcu *next;
251 struct net_bridge_port_group_sg_key key;
252 unsigned char eth_addr[ETH_ALEN] __aligned(2);
254 unsigned char filter_mode;
255 unsigned char grp_query_rexmit_cnt;
256 unsigned char rt_protocol;
258 struct hlist_head src_list;
259 unsigned int src_ents;
260 struct timer_list timer;
261 struct timer_list rexmit_timer;
262 struct hlist_node mglist;
264 struct rhash_head rhnode;
265 struct net_bridge_mcast_gc mcast_gc;
269 struct net_bridge_mdb_entry {
270 struct rhash_head rhnode;
271 struct net_bridge *br;
272 struct net_bridge_port_group __rcu *ports;
276 struct timer_list timer;
277 struct hlist_node mdb_node;
279 struct net_bridge_mcast_gc mcast_gc;
283 struct net_bridge_port {
284 struct net_bridge *br;
285 struct net_device *dev;
286 struct list_head list;
289 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
290 struct net_bridge_vlan_group __rcu *vlgrp;
292 struct net_bridge_port __rcu *backup_port;
298 unsigned char topology_change_ack;
299 unsigned char config_pending;
301 port_id designated_port;
302 bridge_id designated_root;
303 bridge_id designated_bridge;
306 unsigned long designated_age;
308 struct timer_list forward_delay_timer;
309 struct timer_list hold_timer;
310 struct timer_list message_age_timer;
314 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
315 struct bridge_mcast_own_query ip4_own_query;
316 #if IS_ENABLED(CONFIG_IPV6)
317 struct bridge_mcast_own_query ip6_own_query;
318 #endif /* IS_ENABLED(CONFIG_IPV6) */
319 unsigned char multicast_router;
320 struct bridge_mcast_stats __percpu *mcast_stats;
321 struct timer_list multicast_router_timer;
322 struct hlist_head mglist;
323 struct hlist_node rlist;
327 char sysfs_name[IFNAMSIZ];
330 #ifdef CONFIG_NET_POLL_CONTROLLER
333 #ifdef CONFIG_NET_SWITCHDEV
334 int offload_fwd_mark;
337 u16 backup_redirected_cnt;
339 struct bridge_stp_xstats stp_xstats;
342 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
344 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
345 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
347 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
349 return rcu_dereference(dev->rx_handler_data);
352 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
354 return netif_is_bridge_port(dev) ?
355 rtnl_dereference(dev->rx_handler_data) : NULL;
358 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
360 return netif_is_bridge_port(dev) ?
361 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
364 enum net_bridge_opts {
366 BROPT_VLAN_STATS_ENABLED,
367 BROPT_NF_CALL_IPTABLES,
368 BROPT_NF_CALL_IP6TABLES,
369 BROPT_NF_CALL_ARPTABLES,
370 BROPT_GROUP_ADDR_SET,
371 BROPT_MULTICAST_ENABLED,
372 BROPT_MULTICAST_QUERIER,
373 BROPT_MULTICAST_QUERY_USE_IFADDR,
374 BROPT_MULTICAST_STATS_ENABLED,
376 BROPT_NEIGH_SUPPRESS_ENABLED,
377 BROPT_MTU_SET_BY_USER,
378 BROPT_VLAN_STATS_PER_PORT,
380 BROPT_VLAN_BRIDGE_BINDING,
385 spinlock_t hash_lock;
386 struct hlist_head frame_type_list;
387 struct net_device *dev;
388 struct pcpu_sw_netstats __percpu *stats;
389 unsigned long options;
390 /* These fields are accessed on each packet */
391 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
394 struct net_bridge_vlan_group __rcu *vlgrp;
397 struct rhashtable fdb_hash_tbl;
398 struct list_head port_list;
399 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
401 struct rtable fake_rtable;
402 struct rt6_info fake_rt6_info;
406 u16 group_fwd_mask_required;
409 bridge_id designated_root;
411 unsigned char topology_change;
412 unsigned char topology_change_detected;
414 unsigned long max_age;
415 unsigned long hello_time;
416 unsigned long forward_delay;
417 unsigned long ageing_time;
418 unsigned long bridge_max_age;
419 unsigned long bridge_hello_time;
420 unsigned long bridge_forward_delay;
421 unsigned long bridge_ageing_time;
424 u8 group_addr[ETH_ALEN];
427 BR_NO_STP, /* no spanning tree */
428 BR_KERNEL_STP, /* old STP in kernel */
429 BR_USER_STP, /* new RSTP in userspace */
432 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
436 u32 multicast_last_member_count;
437 u32 multicast_startup_query_count;
439 u8 multicast_igmp_version;
441 #if IS_ENABLED(CONFIG_IPV6)
442 u8 multicast_mld_version;
444 spinlock_t multicast_lock;
445 unsigned long multicast_last_member_interval;
446 unsigned long multicast_membership_interval;
447 unsigned long multicast_querier_interval;
448 unsigned long multicast_query_interval;
449 unsigned long multicast_query_response_interval;
450 unsigned long multicast_startup_query_interval;
452 struct rhashtable mdb_hash_tbl;
453 struct rhashtable sg_port_tbl;
455 struct hlist_head mcast_gc_list;
456 struct hlist_head mdb_list;
457 struct hlist_head router_list;
459 struct timer_list multicast_router_timer;
460 struct bridge_mcast_other_query ip4_other_query;
461 struct bridge_mcast_own_query ip4_own_query;
462 struct bridge_mcast_querier ip4_querier;
463 struct bridge_mcast_stats __percpu *mcast_stats;
464 #if IS_ENABLED(CONFIG_IPV6)
465 struct bridge_mcast_other_query ip6_other_query;
466 struct bridge_mcast_own_query ip6_own_query;
467 struct bridge_mcast_querier ip6_querier;
468 #endif /* IS_ENABLED(CONFIG_IPV6) */
469 struct work_struct mcast_gc_work;
472 struct timer_list hello_timer;
473 struct timer_list tcn_timer;
474 struct timer_list topology_change_timer;
475 struct delayed_work gc_work;
476 struct kobject *ifobj;
479 #ifdef CONFIG_NET_SWITCHDEV
480 int offload_fwd_mark;
482 struct hlist_head fdb_list;
484 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
485 struct list_head mrp_list;
487 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
488 struct hlist_head mep_list;
492 struct br_input_skb_cb {
493 struct net_device *brdev;
496 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
500 u8 proxyarp_replied:1;
501 u8 src_port_isolated:1;
502 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
505 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
506 u8 br_netfilter_broute:1;
509 #ifdef CONFIG_NET_SWITCHDEV
510 int offload_fwd_mark;
514 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
516 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
517 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
519 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
522 #define br_printk(level, br, format, args...) \
523 printk(level "%s: " format, (br)->dev->name, ##args)
525 #define br_err(__br, format, args...) \
526 br_printk(KERN_ERR, __br, format, ##args)
527 #define br_warn(__br, format, args...) \
528 br_printk(KERN_WARNING, __br, format, ##args)
529 #define br_notice(__br, format, args...) \
530 br_printk(KERN_NOTICE, __br, format, ##args)
531 #define br_info(__br, format, args...) \
532 br_printk(KERN_INFO, __br, format, ##args)
534 #define br_debug(br, format, args...) \
535 pr_debug("%s: " format, (br)->dev->name, ##args)
537 /* called under bridge lock */
538 static inline int br_is_root_bridge(const struct net_bridge *br)
540 return !memcmp(&br->bridge_id, &br->designated_root, 8);
543 /* check if a VLAN entry is global */
544 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
546 return v->flags & BRIDGE_VLAN_INFO_MASTER;
549 /* check if a VLAN entry is used by the bridge */
550 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
552 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
555 /* check if we should use the vlan entry, returns false if it's only context */
556 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
558 if (br_vlan_is_master(v)) {
559 if (br_vlan_is_brentry(v))
568 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
570 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
573 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
575 bool ret = vid > 0 && vid < VLAN_VID_MASK;
578 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
583 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
584 const struct bridge_vlan_info *last,
585 struct netlink_ext_ack *extack)
587 /* pvid flag is not allowed in ranges */
588 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
589 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
593 /* when cur is the range end, check if:
594 * - it has range start flag
595 * - range ids are invalid (end is equal to or before start)
598 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
599 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
601 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
602 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
604 } else if (cur->vid <= last->vid) {
605 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
610 /* check for required range flags */
611 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
612 BRIDGE_VLAN_INFO_RANGE_END))) {
613 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
620 static inline int br_afspec_cmd_to_rtm(int cmd)
632 static inline int br_opt_get(const struct net_bridge *br,
633 enum net_bridge_opts opt)
635 return test_bit(opt, &br->options);
638 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
639 struct netlink_ext_ack *extack);
640 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
641 int br_boolopt_multi_toggle(struct net_bridge *br,
642 struct br_boolopt_multi *bm,
643 struct netlink_ext_ack *extack);
644 void br_boolopt_multi_get(const struct net_bridge *br,
645 struct br_boolopt_multi *bm);
646 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
649 void br_dev_setup(struct net_device *dev);
650 void br_dev_delete(struct net_device *dev, struct list_head *list);
651 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
652 #ifdef CONFIG_NET_POLL_CONTROLLER
653 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
656 netpoll_send_skb(p->np, skb);
659 int br_netpoll_enable(struct net_bridge_port *p);
660 void br_netpoll_disable(struct net_bridge_port *p);
662 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
667 static inline int br_netpoll_enable(struct net_bridge_port *p)
672 static inline void br_netpoll_disable(struct net_bridge_port *p)
678 int br_fdb_init(void);
679 void br_fdb_fini(void);
680 int br_fdb_hash_init(struct net_bridge *br);
681 void br_fdb_hash_fini(struct net_bridge *br);
682 void br_fdb_flush(struct net_bridge *br);
683 void br_fdb_find_delete_local(struct net_bridge *br,
684 const struct net_bridge_port *p,
685 const unsigned char *addr, u16 vid);
686 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
687 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
688 void br_fdb_cleanup(struct work_struct *work);
689 void br_fdb_delete_by_port(struct net_bridge *br,
690 const struct net_bridge_port *p, u16 vid, int do_all);
691 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
692 const unsigned char *addr,
694 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
695 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
697 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
698 const unsigned char *addr, u16 vid);
699 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
700 const unsigned char *addr, u16 vid, unsigned long flags);
702 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
703 struct net_device *dev, const unsigned char *addr, u16 vid);
704 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
705 const unsigned char *addr, u16 vid, u16 nlh_flags,
706 struct netlink_ext_ack *extack);
707 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
708 struct net_device *dev, struct net_device *fdev, int *idx);
709 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
710 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
711 struct netlink_ext_ack *extack);
712 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
713 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
714 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
715 const unsigned char *addr, u16 vid,
717 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
718 const unsigned char *addr, u16 vid,
720 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
721 const unsigned char *addr, u16 vid, bool offloaded);
729 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
730 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
731 bool local_rcv, bool local_orig);
732 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
733 void br_flood(struct net_bridge *br, struct sk_buff *skb,
734 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
736 /* return true if both source port and dest port are isolated */
737 static inline bool br_skb_isolated(const struct net_bridge_port *to,
738 const struct sk_buff *skb)
740 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
741 (to->flags & BR_ISOLATED);
745 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
746 int br_add_bridge(struct net *net, const char *name);
747 int br_del_bridge(struct net *net, const char *name);
748 int br_add_if(struct net_bridge *br, struct net_device *dev,
749 struct netlink_ext_ack *extack);
750 int br_del_if(struct net_bridge *br, struct net_device *dev);
751 void br_mtu_auto_adjust(struct net_bridge *br);
752 netdev_features_t br_features_recompute(struct net_bridge *br,
753 netdev_features_t features);
754 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
755 void br_manage_promisc(struct net_bridge *br);
756 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
759 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
760 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
762 struct br_frame_type {
764 int (*frame_handler)(struct net_bridge_port *port,
765 struct sk_buff *skb);
766 struct hlist_node list;
769 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
770 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
772 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
774 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
777 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
779 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
782 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
784 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
787 static inline struct net_bridge_port *
788 br_port_get_check_rtnl(const struct net_device *dev)
790 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
794 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
795 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
799 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
800 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
801 struct sk_buff *skb, u16 vid);
802 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
803 struct sk_buff *skb, u16 vid);
804 int br_multicast_add_port(struct net_bridge_port *port);
805 void br_multicast_del_port(struct net_bridge_port *port);
806 void br_multicast_enable_port(struct net_bridge_port *port);
807 void br_multicast_disable_port(struct net_bridge_port *port);
808 void br_multicast_init(struct net_bridge *br);
809 void br_multicast_open(struct net_bridge *br);
810 void br_multicast_stop(struct net_bridge *br);
811 void br_multicast_dev_del(struct net_bridge *br);
812 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
813 struct sk_buff *skb, bool local_rcv, bool local_orig);
814 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
815 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
816 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
817 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
818 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
819 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
820 #if IS_ENABLED(CONFIG_IPV6)
821 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
823 struct net_bridge_mdb_entry *
824 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
825 struct net_bridge_mdb_entry *
826 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
827 struct net_bridge_port_group *
828 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
829 struct net_bridge_port_group __rcu *next,
830 unsigned char flags, const unsigned char *src,
831 u8 filter_mode, u8 rt_protocol);
832 int br_mdb_hash_init(struct net_bridge *br);
833 void br_mdb_hash_fini(struct net_bridge *br);
834 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
835 struct net_bridge_port_group *pg, int type);
836 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
838 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
839 struct net_bridge_port_group *pg,
840 struct net_bridge_port_group __rcu **pp);
841 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
842 const struct sk_buff *skb, u8 type, u8 dir);
843 int br_multicast_init_stats(struct net_bridge *br);
844 void br_multicast_uninit_stats(struct net_bridge *br);
845 void br_multicast_get_stats(const struct net_bridge *br,
846 const struct net_bridge_port *p,
847 struct br_mcast_stats *dest);
848 void br_mdb_init(void);
849 void br_mdb_uninit(void);
850 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
851 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
852 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
854 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
855 struct net_bridge_port_group *sg);
857 #define mlock_dereference(X, br) \
858 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
860 static inline bool br_multicast_is_router(struct net_bridge *br)
862 return br->multicast_router == 2 ||
863 (br->multicast_router == 1 &&
864 timer_pending(&br->multicast_router_timer));
868 __br_multicast_querier_exists(struct net_bridge *br,
869 struct bridge_mcast_other_query *querier,
872 bool own_querier_enabled;
874 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
875 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
876 own_querier_enabled = false;
878 own_querier_enabled = true;
880 own_querier_enabled = false;
883 return time_is_before_jiffies(querier->delay_time) &&
884 (own_querier_enabled || timer_pending(&querier->timer));
887 static inline bool br_multicast_querier_exists(struct net_bridge *br,
890 switch (eth->h_proto) {
891 case (htons(ETH_P_IP)):
892 return __br_multicast_querier_exists(br,
893 &br->ip4_other_query, false);
894 #if IS_ENABLED(CONFIG_IPV6)
895 case (htons(ETH_P_IPV6)):
896 return __br_multicast_querier_exists(br,
897 &br->ip6_other_query, true);
904 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
907 case htons(ETH_P_IP):
908 return ipv4_is_zeronet(ip->src.ip4);
909 #if IS_ENABLED(CONFIG_IPV6)
910 case htons(ETH_P_IPV6):
911 return ipv6_addr_any(&ip->src.ip6);
918 static inline bool br_multicast_should_handle_mode(const struct net_bridge *br,
922 case htons(ETH_P_IP):
923 return !!(br->multicast_igmp_version == 3);
924 #if IS_ENABLED(CONFIG_IPV6)
925 case htons(ETH_P_IPV6):
926 return !!(br->multicast_mld_version == 2);
933 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
935 return BR_INPUT_SKB_CB(skb)->igmp;
938 static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
940 return br->multicast_last_member_interval *
941 br->multicast_last_member_count;
944 static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
946 /* use the RFC default of 2 for QRV */
947 return 2 * br->multicast_query_interval +
948 br->multicast_query_response_interval;
951 static inline int br_multicast_rcv(struct net_bridge *br,
952 struct net_bridge_port *port,
959 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
960 struct sk_buff *skb, u16 vid)
965 static inline int br_multicast_add_port(struct net_bridge_port *port)
970 static inline void br_multicast_del_port(struct net_bridge_port *port)
974 static inline void br_multicast_enable_port(struct net_bridge_port *port)
978 static inline void br_multicast_disable_port(struct net_bridge_port *port)
982 static inline void br_multicast_init(struct net_bridge *br)
986 static inline void br_multicast_open(struct net_bridge *br)
990 static inline void br_multicast_stop(struct net_bridge *br)
994 static inline void br_multicast_dev_del(struct net_bridge *br)
998 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1000 bool local_rcv, bool local_orig)
1004 static inline bool br_multicast_is_router(struct net_bridge *br)
1009 static inline bool br_multicast_querier_exists(struct net_bridge *br,
1015 static inline void br_mdb_init(void)
1019 static inline void br_mdb_uninit(void)
1023 static inline int br_mdb_hash_init(struct net_bridge *br)
1028 static inline void br_mdb_hash_fini(struct net_bridge *br)
1032 static inline void br_multicast_count(struct net_bridge *br,
1033 const struct net_bridge_port *p,
1034 const struct sk_buff *skb,
1039 static inline int br_multicast_init_stats(struct net_bridge *br)
1044 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1048 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1055 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1056 bool br_allowed_ingress(const struct net_bridge *br,
1057 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1058 u16 *vid, u8 *state);
1059 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1060 const struct sk_buff *skb);
1061 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1062 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1063 const struct net_bridge_port *port,
1064 struct net_bridge_vlan_group *vg,
1065 struct sk_buff *skb);
1066 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1067 bool *changed, struct netlink_ext_ack *extack);
1068 int br_vlan_delete(struct net_bridge *br, u16 vid);
1069 void br_vlan_flush(struct net_bridge *br);
1070 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1071 void br_recalculate_fwd_mask(struct net_bridge *br);
1072 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1073 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1074 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
1075 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
1076 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1077 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1078 int br_vlan_init(struct net_bridge *br);
1079 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
1080 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1081 struct netlink_ext_ack *extack);
1082 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1083 bool *changed, struct netlink_ext_ack *extack);
1084 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1085 void nbp_vlan_flush(struct net_bridge_port *port);
1086 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1087 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1088 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1089 struct br_vlan_stats *stats);
1090 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1091 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1093 void br_vlan_rtnl_init(void);
1094 void br_vlan_rtnl_uninit(void);
1095 void br_vlan_notify(const struct net_bridge *br,
1096 const struct net_bridge_port *p,
1097 u16 vid, u16 vid_range,
1099 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1100 const struct net_bridge_vlan *range_end);
1102 static inline struct net_bridge_vlan_group *br_vlan_group(
1103 const struct net_bridge *br)
1105 return rtnl_dereference(br->vlgrp);
1108 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1109 const struct net_bridge_port *p)
1111 return rtnl_dereference(p->vlgrp);
1114 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1115 const struct net_bridge *br)
1117 return rcu_dereference(br->vlgrp);
1120 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1121 const struct net_bridge_port *p)
1123 return rcu_dereference(p->vlgrp);
1126 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1127 * skb, the vlan tag will always be present if the frame was tagged.
1129 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1133 if (skb_vlan_tag_present(skb)) {
1134 *vid = skb_vlan_tag_get_id(skb);
1143 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1152 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1154 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1157 static inline bool br_allowed_ingress(const struct net_bridge *br,
1158 struct net_bridge_vlan_group *vg,
1159 struct sk_buff *skb,
1160 u16 *vid, u8 *state)
1165 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1166 const struct sk_buff *skb)
1171 static inline bool br_should_learn(struct net_bridge_port *p,
1172 struct sk_buff *skb, u16 *vid)
1177 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1178 const struct net_bridge_port *port,
1179 struct net_bridge_vlan_group *vg,
1180 struct sk_buff *skb)
1185 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1186 bool *changed, struct netlink_ext_ack *extack)
1192 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1197 static inline void br_vlan_flush(struct net_bridge *br)
1201 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1205 static inline int br_vlan_init(struct net_bridge *br)
1210 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1211 bool *changed, struct netlink_ext_ack *extack)
1217 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1222 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1226 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1232 static inline int nbp_vlan_init(struct net_bridge_port *port,
1233 struct netlink_ext_ack *extack)
1238 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1243 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1248 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1254 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1260 static inline struct net_bridge_vlan_group *br_vlan_group(
1261 const struct net_bridge *br)
1266 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1267 const struct net_bridge_port *p)
1272 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1273 const struct net_bridge *br)
1278 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1279 const struct net_bridge_port *p)
1284 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1285 struct br_vlan_stats *stats)
1289 static inline void br_vlan_port_event(struct net_bridge_port *p,
1290 unsigned long event)
1294 static inline int br_vlan_bridge_event(struct net_device *dev,
1295 unsigned long event, void *ptr)
1300 static inline void br_vlan_rtnl_init(void)
1304 static inline void br_vlan_rtnl_uninit(void)
1308 static inline void br_vlan_notify(const struct net_bridge *br,
1309 const struct net_bridge_port *p,
1310 u16 vid, u16 vid_range,
1315 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1316 const struct net_bridge_vlan *range_end)
1322 /* br_vlan_options.c */
1323 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1324 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1325 const struct net_bridge_vlan *range_end);
1326 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v);
1327 size_t br_vlan_opts_nl_size(void);
1328 int br_vlan_process_options(const struct net_bridge *br,
1329 const struct net_bridge_port *p,
1330 struct net_bridge_vlan *range_start,
1331 struct net_bridge_vlan *range_end,
1333 struct netlink_ext_ack *extack);
1335 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
1336 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1338 return READ_ONCE(v->state);
1341 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1343 WRITE_ONCE(v->state, state);
1346 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1348 return READ_ONCE(vg->pvid_state);
1351 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1354 WRITE_ONCE(vg->pvid_state, state);
1357 /* learn_allow is true at ingress and false at egress */
1358 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1361 case BR_STATE_LEARNING:
1363 case BR_STATE_FORWARDING:
1372 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1374 extern const struct nf_br_ops __rcu *nf_br_ops;
1376 /* br_netfilter.c */
1377 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1378 int br_nf_core_init(void);
1379 void br_nf_core_fini(void);
1380 void br_netfilter_rtable_init(struct net_bridge *);
1382 static inline int br_nf_core_init(void) { return 0; }
1383 static inline void br_nf_core_fini(void) {}
1384 #define br_netfilter_rtable_init(x)
1388 void br_set_state(struct net_bridge_port *p, unsigned int state);
1389 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1390 void br_init_port(struct net_bridge_port *p);
1391 void br_become_designated_port(struct net_bridge_port *p);
1393 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1394 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1395 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1396 int br_set_max_age(struct net_bridge *br, unsigned long x);
1397 int __set_ageing_time(struct net_device *dev, unsigned long t);
1398 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1402 void br_stp_enable_bridge(struct net_bridge *br);
1403 void br_stp_disable_bridge(struct net_bridge *br);
1404 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1405 struct netlink_ext_ack *extack);
1406 void br_stp_enable_port(struct net_bridge_port *p);
1407 void br_stp_disable_port(struct net_bridge_port *p);
1408 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1409 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1410 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1411 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1412 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1413 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1417 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1418 struct net_device *dev);
1420 /* br_stp_timer.c */
1421 void br_stp_timer_init(struct net_bridge *br);
1422 void br_stp_port_timer_init(struct net_bridge_port *p);
1423 unsigned long br_timer_value(const struct timer_list *timer);
1426 #if IS_ENABLED(CONFIG_ATM_LANE)
1427 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1431 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1432 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1433 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1434 bool br_mrp_enabled(struct net_bridge *br);
1435 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1436 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1438 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1439 struct nlattr *attr, int cmd,
1440 struct netlink_ext_ack *extack)
1445 static inline bool br_mrp_enabled(struct net_bridge *br)
1450 static inline void br_mrp_port_del(struct net_bridge *br,
1451 struct net_bridge_port *p)
1455 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
1463 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
1464 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1465 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1466 bool br_cfm_created(struct net_bridge *br);
1467 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
1469 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1470 struct nlattr *attr, int cmd,
1471 struct netlink_ext_ack *extack)
1476 static inline bool br_cfm_created(struct net_bridge *br)
1481 static inline void br_cfm_port_del(struct net_bridge *br,
1482 struct net_bridge_port *p)
1488 extern struct rtnl_link_ops br_link_ops;
1489 int br_netlink_init(void);
1490 void br_netlink_fini(void);
1491 void br_ifinfo_notify(int event, const struct net_bridge *br,
1492 const struct net_bridge_port *port);
1493 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1494 struct netlink_ext_ack *extack);
1495 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1496 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1497 u32 filter_mask, int nlflags);
1498 int br_process_vlan_info(struct net_bridge *br,
1499 struct net_bridge_port *p, int cmd,
1500 struct bridge_vlan_info *vinfo_curr,
1501 struct bridge_vlan_info **vinfo_last,
1503 struct netlink_ext_ack *extack);
1507 extern const struct sysfs_ops brport_sysfs_ops;
1508 int br_sysfs_addif(struct net_bridge_port *p);
1509 int br_sysfs_renameif(struct net_bridge_port *p);
1512 int br_sysfs_addbr(struct net_device *dev);
1513 void br_sysfs_delbr(struct net_device *dev);
1517 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1518 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1519 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1520 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1521 #endif /* CONFIG_SYSFS */
1523 /* br_switchdev.c */
1524 #ifdef CONFIG_NET_SWITCHDEV
1525 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1526 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1527 struct sk_buff *skb);
1528 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1529 const struct sk_buff *skb);
1530 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1531 unsigned long flags,
1532 unsigned long mask);
1533 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1535 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1536 struct netlink_ext_ack *extack);
1537 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1539 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1541 skb->offload_fwd_mark = 0;
1544 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1549 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1550 struct sk_buff *skb)
1554 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1555 const struct sk_buff *skb)
1560 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1561 unsigned long flags,
1567 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1569 struct netlink_ext_ack *extack)
1574 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1580 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1584 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1587 #endif /* CONFIG_NET_SWITCHDEV */
1589 /* br_arp_nd_proxy.c */
1590 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1591 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1592 u16 vid, struct net_bridge_port *p);
1593 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1594 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1595 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);