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 static inline bool br_group_is_l2(const struct br_ip *group)
859 return group->proto == 0;
862 #define mlock_dereference(X, br) \
863 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
865 static inline bool br_multicast_is_router(struct net_bridge *br)
867 return br->multicast_router == 2 ||
868 (br->multicast_router == 1 &&
869 timer_pending(&br->multicast_router_timer));
873 __br_multicast_querier_exists(struct net_bridge *br,
874 struct bridge_mcast_other_query *querier,
877 bool own_querier_enabled;
879 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
880 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
881 own_querier_enabled = false;
883 own_querier_enabled = true;
885 own_querier_enabled = false;
888 return time_is_before_jiffies(querier->delay_time) &&
889 (own_querier_enabled || timer_pending(&querier->timer));
892 static inline bool br_multicast_querier_exists(struct net_bridge *br,
894 const struct net_bridge_mdb_entry *mdb)
896 switch (eth->h_proto) {
897 case (htons(ETH_P_IP)):
898 return __br_multicast_querier_exists(br,
899 &br->ip4_other_query, false);
900 #if IS_ENABLED(CONFIG_IPV6)
901 case (htons(ETH_P_IPV6)):
902 return __br_multicast_querier_exists(br,
903 &br->ip6_other_query, true);
906 return !!mdb && br_group_is_l2(&mdb->addr);
910 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
913 case htons(ETH_P_IP):
914 return ipv4_is_zeronet(ip->src.ip4);
915 #if IS_ENABLED(CONFIG_IPV6)
916 case htons(ETH_P_IPV6):
917 return ipv6_addr_any(&ip->src.ip6);
924 static inline bool br_multicast_should_handle_mode(const struct net_bridge *br,
928 case htons(ETH_P_IP):
929 return !!(br->multicast_igmp_version == 3);
930 #if IS_ENABLED(CONFIG_IPV6)
931 case htons(ETH_P_IPV6):
932 return !!(br->multicast_mld_version == 2);
939 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
941 return BR_INPUT_SKB_CB(skb)->igmp;
944 static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
946 return br->multicast_last_member_interval *
947 br->multicast_last_member_count;
950 static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
952 /* use the RFC default of 2 for QRV */
953 return 2 * br->multicast_query_interval +
954 br->multicast_query_response_interval;
957 static inline int br_multicast_rcv(struct net_bridge *br,
958 struct net_bridge_port *port,
965 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
966 struct sk_buff *skb, u16 vid)
971 static inline int br_multicast_add_port(struct net_bridge_port *port)
976 static inline void br_multicast_del_port(struct net_bridge_port *port)
980 static inline void br_multicast_enable_port(struct net_bridge_port *port)
984 static inline void br_multicast_disable_port(struct net_bridge_port *port)
988 static inline void br_multicast_init(struct net_bridge *br)
992 static inline void br_multicast_open(struct net_bridge *br)
996 static inline void br_multicast_stop(struct net_bridge *br)
1000 static inline void br_multicast_dev_del(struct net_bridge *br)
1004 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1005 struct sk_buff *skb,
1006 bool local_rcv, bool local_orig)
1010 static inline bool br_multicast_is_router(struct net_bridge *br)
1015 static inline bool br_multicast_querier_exists(struct net_bridge *br,
1021 static inline void br_mdb_init(void)
1025 static inline void br_mdb_uninit(void)
1029 static inline int br_mdb_hash_init(struct net_bridge *br)
1034 static inline void br_mdb_hash_fini(struct net_bridge *br)
1038 static inline void br_multicast_count(struct net_bridge *br,
1039 const struct net_bridge_port *p,
1040 const struct sk_buff *skb,
1045 static inline int br_multicast_init_stats(struct net_bridge *br)
1050 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1054 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1061 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1062 bool br_allowed_ingress(const struct net_bridge *br,
1063 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1064 u16 *vid, u8 *state);
1065 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1066 const struct sk_buff *skb);
1067 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1068 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1069 const struct net_bridge_port *port,
1070 struct net_bridge_vlan_group *vg,
1071 struct sk_buff *skb);
1072 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1073 bool *changed, struct netlink_ext_ack *extack);
1074 int br_vlan_delete(struct net_bridge *br, u16 vid);
1075 void br_vlan_flush(struct net_bridge *br);
1076 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1077 void br_recalculate_fwd_mask(struct net_bridge *br);
1078 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1079 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1080 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
1081 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
1082 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1083 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1084 int br_vlan_init(struct net_bridge *br);
1085 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
1086 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1087 struct netlink_ext_ack *extack);
1088 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1089 bool *changed, struct netlink_ext_ack *extack);
1090 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1091 void nbp_vlan_flush(struct net_bridge_port *port);
1092 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1093 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1094 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1095 struct br_vlan_stats *stats);
1096 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1097 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1099 void br_vlan_rtnl_init(void);
1100 void br_vlan_rtnl_uninit(void);
1101 void br_vlan_notify(const struct net_bridge *br,
1102 const struct net_bridge_port *p,
1103 u16 vid, u16 vid_range,
1105 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1106 const struct net_bridge_vlan *range_end);
1108 static inline struct net_bridge_vlan_group *br_vlan_group(
1109 const struct net_bridge *br)
1111 return rtnl_dereference(br->vlgrp);
1114 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1115 const struct net_bridge_port *p)
1117 return rtnl_dereference(p->vlgrp);
1120 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1121 const struct net_bridge *br)
1123 return rcu_dereference(br->vlgrp);
1126 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1127 const struct net_bridge_port *p)
1129 return rcu_dereference(p->vlgrp);
1132 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1133 * skb, the vlan tag will always be present if the frame was tagged.
1135 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1139 if (skb_vlan_tag_present(skb)) {
1140 *vid = skb_vlan_tag_get_id(skb);
1149 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1158 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1160 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1163 static inline bool br_allowed_ingress(const struct net_bridge *br,
1164 struct net_bridge_vlan_group *vg,
1165 struct sk_buff *skb,
1166 u16 *vid, u8 *state)
1171 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1172 const struct sk_buff *skb)
1177 static inline bool br_should_learn(struct net_bridge_port *p,
1178 struct sk_buff *skb, u16 *vid)
1183 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1184 const struct net_bridge_port *port,
1185 struct net_bridge_vlan_group *vg,
1186 struct sk_buff *skb)
1191 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1192 bool *changed, struct netlink_ext_ack *extack)
1198 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1203 static inline void br_vlan_flush(struct net_bridge *br)
1207 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1211 static inline int br_vlan_init(struct net_bridge *br)
1216 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1217 bool *changed, struct netlink_ext_ack *extack)
1223 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1228 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1232 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1238 static inline int nbp_vlan_init(struct net_bridge_port *port,
1239 struct netlink_ext_ack *extack)
1244 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1249 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1254 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1260 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1266 static inline struct net_bridge_vlan_group *br_vlan_group(
1267 const struct net_bridge *br)
1272 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1273 const struct net_bridge_port *p)
1278 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1279 const struct net_bridge *br)
1284 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1285 const struct net_bridge_port *p)
1290 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1291 struct br_vlan_stats *stats)
1295 static inline void br_vlan_port_event(struct net_bridge_port *p,
1296 unsigned long event)
1300 static inline int br_vlan_bridge_event(struct net_device *dev,
1301 unsigned long event, void *ptr)
1306 static inline void br_vlan_rtnl_init(void)
1310 static inline void br_vlan_rtnl_uninit(void)
1314 static inline void br_vlan_notify(const struct net_bridge *br,
1315 const struct net_bridge_port *p,
1316 u16 vid, u16 vid_range,
1321 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1322 const struct net_bridge_vlan *range_end)
1328 /* br_vlan_options.c */
1329 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1330 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1331 const struct net_bridge_vlan *range_end);
1332 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v);
1333 size_t br_vlan_opts_nl_size(void);
1334 int br_vlan_process_options(const struct net_bridge *br,
1335 const struct net_bridge_port *p,
1336 struct net_bridge_vlan *range_start,
1337 struct net_bridge_vlan *range_end,
1339 struct netlink_ext_ack *extack);
1341 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
1342 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1344 return READ_ONCE(v->state);
1347 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1349 WRITE_ONCE(v->state, state);
1352 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1354 return READ_ONCE(vg->pvid_state);
1357 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1360 WRITE_ONCE(vg->pvid_state, state);
1363 /* learn_allow is true at ingress and false at egress */
1364 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1367 case BR_STATE_LEARNING:
1369 case BR_STATE_FORWARDING:
1378 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1380 extern const struct nf_br_ops __rcu *nf_br_ops;
1382 /* br_netfilter.c */
1383 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1384 int br_nf_core_init(void);
1385 void br_nf_core_fini(void);
1386 void br_netfilter_rtable_init(struct net_bridge *);
1388 static inline int br_nf_core_init(void) { return 0; }
1389 static inline void br_nf_core_fini(void) {}
1390 #define br_netfilter_rtable_init(x)
1394 void br_set_state(struct net_bridge_port *p, unsigned int state);
1395 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1396 void br_init_port(struct net_bridge_port *p);
1397 void br_become_designated_port(struct net_bridge_port *p);
1399 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1400 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1401 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1402 int br_set_max_age(struct net_bridge *br, unsigned long x);
1403 int __set_ageing_time(struct net_device *dev, unsigned long t);
1404 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1408 void br_stp_enable_bridge(struct net_bridge *br);
1409 void br_stp_disable_bridge(struct net_bridge *br);
1410 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1411 struct netlink_ext_ack *extack);
1412 void br_stp_enable_port(struct net_bridge_port *p);
1413 void br_stp_disable_port(struct net_bridge_port *p);
1414 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1415 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1416 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1417 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1418 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1419 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1423 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1424 struct net_device *dev);
1426 /* br_stp_timer.c */
1427 void br_stp_timer_init(struct net_bridge *br);
1428 void br_stp_port_timer_init(struct net_bridge_port *p);
1429 unsigned long br_timer_value(const struct timer_list *timer);
1432 #if IS_ENABLED(CONFIG_ATM_LANE)
1433 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1437 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1438 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1439 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1440 bool br_mrp_enabled(struct net_bridge *br);
1441 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1442 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1444 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1445 struct nlattr *attr, int cmd,
1446 struct netlink_ext_ack *extack)
1451 static inline bool br_mrp_enabled(struct net_bridge *br)
1456 static inline void br_mrp_port_del(struct net_bridge *br,
1457 struct net_bridge_port *p)
1461 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
1469 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
1470 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1471 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1472 bool br_cfm_created(struct net_bridge *br);
1473 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
1474 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
1475 int br_cfm_status_fill_info(struct sk_buff *skb,
1476 struct net_bridge *br,
1478 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
1479 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
1481 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1482 struct nlattr *attr, int cmd,
1483 struct netlink_ext_ack *extack)
1488 static inline bool br_cfm_created(struct net_bridge *br)
1493 static inline void br_cfm_port_del(struct net_bridge *br,
1494 struct net_bridge_port *p)
1498 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
1503 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
1504 struct net_bridge *br,
1510 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
1515 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
1522 extern struct rtnl_link_ops br_link_ops;
1523 int br_netlink_init(void);
1524 void br_netlink_fini(void);
1525 void br_ifinfo_notify(int event, const struct net_bridge *br,
1526 const struct net_bridge_port *port);
1527 void br_info_notify(int event, const struct net_bridge *br,
1528 const struct net_bridge_port *port, u32 filter);
1529 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1530 struct netlink_ext_ack *extack);
1531 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1532 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1533 u32 filter_mask, int nlflags);
1534 int br_process_vlan_info(struct net_bridge *br,
1535 struct net_bridge_port *p, int cmd,
1536 struct bridge_vlan_info *vinfo_curr,
1537 struct bridge_vlan_info **vinfo_last,
1539 struct netlink_ext_ack *extack);
1543 extern const struct sysfs_ops brport_sysfs_ops;
1544 int br_sysfs_addif(struct net_bridge_port *p);
1545 int br_sysfs_renameif(struct net_bridge_port *p);
1548 int br_sysfs_addbr(struct net_device *dev);
1549 void br_sysfs_delbr(struct net_device *dev);
1553 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1554 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1555 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1556 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1557 #endif /* CONFIG_SYSFS */
1559 /* br_switchdev.c */
1560 #ifdef CONFIG_NET_SWITCHDEV
1561 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1562 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1563 struct sk_buff *skb);
1564 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1565 const struct sk_buff *skb);
1566 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1567 unsigned long flags,
1568 unsigned long mask);
1569 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1571 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1572 struct netlink_ext_ack *extack);
1573 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1575 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1577 skb->offload_fwd_mark = 0;
1580 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1585 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1586 struct sk_buff *skb)
1590 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1591 const struct sk_buff *skb)
1596 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1597 unsigned long flags,
1603 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1605 struct netlink_ext_ack *extack)
1610 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1616 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1620 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1623 #endif /* CONFIG_NET_SWITCHDEV */
1625 /* br_arp_nd_proxy.c */
1626 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1627 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1628 u16 vid, struct net_bridge_port *p);
1629 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1630 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1631 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);