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_tunnel_info {
94 struct metadata_dst *tunnel_dst;
97 /* private vlan flags */
99 BR_VLFLAG_PER_PORT_STATS = BIT(0),
100 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
104 * struct net_bridge_vlan - per-vlan entry
106 * @vnode: rhashtable member
108 * @flags: bridge vlan flags
109 * @priv_flags: private (in-kernel) bridge vlan flags
110 * @state: STP state (e.g. blocking, learning, forwarding)
111 * @stats: per-cpu VLAN statistics
112 * @br: if MASTER flag set, this points to a bridge struct
113 * @port: if MASTER flag unset, this points to a port struct
114 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
115 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
116 * for this VLAN entry
117 * @vlist: sorted list of VLAN entries
118 * @rcu: used for entry destruction
120 * This structure is shared between the global per-VLAN entries contained in
121 * the bridge rhashtable and the local per-port per-VLAN entries contained in
122 * the port's rhashtable. The union entries should be interpreted depending on
123 * the entry flags that are set.
125 struct net_bridge_vlan {
126 struct rhash_head vnode;
127 struct rhash_head tnode;
132 struct pcpu_sw_netstats __percpu *stats;
134 struct net_bridge *br;
135 struct net_bridge_port *port;
139 struct net_bridge_vlan *brvlan;
142 struct br_tunnel_info tinfo;
144 struct list_head vlist;
150 * struct net_bridge_vlan_group
152 * @vlan_hash: VLAN entry rhashtable
153 * @vlan_list: sorted VLAN entry list
154 * @num_vlans: number of total VLAN entries
155 * @pvid: PVID VLAN id
156 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking)
158 * IMPORTANT: Be careful when checking if there're VLAN entries using list
159 * primitives because the bridge can have entries in its list which
160 * are just for global context but not for filtering, i.e. they have
161 * the master flag set but not the brentry flag. If you have to check
162 * if there're "real" entries in the bridge please test @num_vlans
164 struct net_bridge_vlan_group {
165 struct rhashtable vlan_hash;
166 struct rhashtable tunnel_hash;
167 struct list_head vlan_list;
173 /* bridge fdb flags */
178 BR_FDB_ADDED_BY_USER,
179 BR_FDB_ADDED_BY_EXT_LEARN,
182 BR_FDB_NOTIFY_INACTIVE
185 struct net_bridge_fdb_key {
190 struct net_bridge_fdb_entry {
191 struct rhash_head rhnode;
192 struct net_bridge_port *dst;
194 struct net_bridge_fdb_key key;
195 struct hlist_node fdb_node;
198 /* write-heavy members should not affect lookups */
199 unsigned long updated ____cacheline_aligned_in_smp;
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)
211 #define PG_SRC_ENT_LIMIT 32
213 #define BR_SGRP_F_DELETE BIT(0)
214 #define BR_SGRP_F_SEND BIT(1)
215 #define BR_SGRP_F_INSTALLED BIT(2)
217 struct net_bridge_mcast_gc {
218 struct hlist_node gc_node;
219 void (*destroy)(struct net_bridge_mcast_gc *gc);
222 struct net_bridge_group_src {
223 struct hlist_node node;
226 struct net_bridge_port_group *pg;
228 u8 src_query_rexmit_cnt;
229 struct timer_list timer;
231 struct net_bridge *br;
232 struct net_bridge_mcast_gc mcast_gc;
236 struct net_bridge_port_group_sg_key {
237 struct net_bridge_port *port;
241 struct 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);
246 unsigned char filter_mode;
247 unsigned char grp_query_rexmit_cnt;
248 unsigned char rt_protocol;
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;
258 struct rhash_head rhnode;
259 struct net_bridge_mcast_gc mcast_gc;
263 struct net_bridge_mdb_entry {
264 struct rhash_head rhnode;
265 struct net_bridge *br;
266 struct net_bridge_port_group __rcu *ports;
270 struct timer_list timer;
271 struct hlist_node mdb_node;
273 struct net_bridge_mcast_gc mcast_gc;
277 struct net_bridge_port {
278 struct net_bridge *br;
279 struct net_device *dev;
280 struct list_head list;
283 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
284 struct net_bridge_vlan_group __rcu *vlgrp;
286 struct net_bridge_port __rcu *backup_port;
292 unsigned char topology_change_ack;
293 unsigned char config_pending;
295 port_id designated_port;
296 bridge_id designated_root;
297 bridge_id designated_bridge;
300 unsigned long designated_age;
302 struct timer_list forward_delay_timer;
303 struct timer_list hold_timer;
304 struct timer_list message_age_timer;
308 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
309 struct bridge_mcast_own_query ip4_own_query;
310 #if IS_ENABLED(CONFIG_IPV6)
311 struct bridge_mcast_own_query ip6_own_query;
312 #endif /* IS_ENABLED(CONFIG_IPV6) */
313 u32 multicast_eht_hosts_limit;
314 u32 multicast_eht_hosts_cnt;
315 unsigned char multicast_router;
316 struct bridge_mcast_stats __percpu *mcast_stats;
317 struct timer_list multicast_router_timer;
318 struct hlist_head mglist;
319 struct hlist_node rlist;
323 char sysfs_name[IFNAMSIZ];
326 #ifdef CONFIG_NET_POLL_CONTROLLER
329 #ifdef CONFIG_NET_SWITCHDEV
330 int offload_fwd_mark;
333 u16 backup_redirected_cnt;
335 struct bridge_stp_xstats stp_xstats;
338 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
340 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
341 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
343 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
345 return rcu_dereference(dev->rx_handler_data);
348 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
350 return netif_is_bridge_port(dev) ?
351 rtnl_dereference(dev->rx_handler_data) : NULL;
354 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
356 return netif_is_bridge_port(dev) ?
357 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
360 enum net_bridge_opts {
362 BROPT_VLAN_STATS_ENABLED,
363 BROPT_NF_CALL_IPTABLES,
364 BROPT_NF_CALL_IP6TABLES,
365 BROPT_NF_CALL_ARPTABLES,
366 BROPT_GROUP_ADDR_SET,
367 BROPT_MULTICAST_ENABLED,
368 BROPT_MULTICAST_QUERIER,
369 BROPT_MULTICAST_QUERY_USE_IFADDR,
370 BROPT_MULTICAST_STATS_ENABLED,
372 BROPT_NEIGH_SUPPRESS_ENABLED,
373 BROPT_MTU_SET_BY_USER,
374 BROPT_VLAN_STATS_PER_PORT,
376 BROPT_VLAN_BRIDGE_BINDING,
381 spinlock_t hash_lock;
382 struct hlist_head frame_type_list;
383 struct net_device *dev;
384 unsigned long options;
385 /* These fields are accessed on each packet */
386 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
389 struct net_bridge_vlan_group __rcu *vlgrp;
392 struct rhashtable fdb_hash_tbl;
393 struct list_head port_list;
394 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
396 struct rtable fake_rtable;
397 struct rt6_info fake_rt6_info;
401 u16 group_fwd_mask_required;
404 bridge_id designated_root;
406 unsigned char topology_change;
407 unsigned char topology_change_detected;
409 unsigned long max_age;
410 unsigned long hello_time;
411 unsigned long forward_delay;
412 unsigned long ageing_time;
413 unsigned long bridge_max_age;
414 unsigned long bridge_hello_time;
415 unsigned long bridge_forward_delay;
416 unsigned long bridge_ageing_time;
419 u8 group_addr[ETH_ALEN];
422 BR_NO_STP, /* no spanning tree */
423 BR_KERNEL_STP, /* old STP in kernel */
424 BR_USER_STP, /* new RSTP in userspace */
427 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
431 u32 multicast_last_member_count;
432 u32 multicast_startup_query_count;
434 u8 multicast_igmp_version;
436 #if IS_ENABLED(CONFIG_IPV6)
437 u8 multicast_mld_version;
439 spinlock_t multicast_lock;
440 unsigned long multicast_last_member_interval;
441 unsigned long multicast_membership_interval;
442 unsigned long multicast_querier_interval;
443 unsigned long multicast_query_interval;
444 unsigned long multicast_query_response_interval;
445 unsigned long multicast_startup_query_interval;
447 struct rhashtable mdb_hash_tbl;
448 struct rhashtable sg_port_tbl;
450 struct hlist_head mcast_gc_list;
451 struct hlist_head mdb_list;
452 struct hlist_head router_list;
454 struct timer_list multicast_router_timer;
455 struct bridge_mcast_other_query ip4_other_query;
456 struct bridge_mcast_own_query ip4_own_query;
457 struct bridge_mcast_querier ip4_querier;
458 struct bridge_mcast_stats __percpu *mcast_stats;
459 #if IS_ENABLED(CONFIG_IPV6)
460 struct bridge_mcast_other_query ip6_other_query;
461 struct bridge_mcast_own_query ip6_own_query;
462 struct bridge_mcast_querier ip6_querier;
463 #endif /* IS_ENABLED(CONFIG_IPV6) */
464 struct work_struct mcast_gc_work;
467 struct timer_list hello_timer;
468 struct timer_list tcn_timer;
469 struct timer_list topology_change_timer;
470 struct delayed_work gc_work;
471 struct kobject *ifobj;
474 #ifdef CONFIG_NET_SWITCHDEV
475 int offload_fwd_mark;
477 struct hlist_head fdb_list;
479 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
480 struct hlist_head mrp_list;
482 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
483 struct hlist_head mep_list;
487 struct br_input_skb_cb {
488 struct net_device *brdev;
491 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
495 u8 proxyarp_replied:1;
496 u8 src_port_isolated:1;
497 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
500 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
501 u8 br_netfilter_broute:1;
504 #ifdef CONFIG_NET_SWITCHDEV
505 int offload_fwd_mark;
509 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
511 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
512 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
514 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
517 #define br_printk(level, br, format, args...) \
518 printk(level "%s: " format, (br)->dev->name, ##args)
520 #define br_err(__br, format, args...) \
521 br_printk(KERN_ERR, __br, format, ##args)
522 #define br_warn(__br, format, args...) \
523 br_printk(KERN_WARNING, __br, format, ##args)
524 #define br_notice(__br, format, args...) \
525 br_printk(KERN_NOTICE, __br, format, ##args)
526 #define br_info(__br, format, args...) \
527 br_printk(KERN_INFO, __br, format, ##args)
529 #define br_debug(br, format, args...) \
530 pr_debug("%s: " format, (br)->dev->name, ##args)
532 /* called under bridge lock */
533 static inline int br_is_root_bridge(const struct net_bridge *br)
535 return !memcmp(&br->bridge_id, &br->designated_root, 8);
538 /* check if a VLAN entry is global */
539 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
541 return v->flags & BRIDGE_VLAN_INFO_MASTER;
544 /* check if a VLAN entry is used by the bridge */
545 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
547 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
550 /* check if we should use the vlan entry, returns false if it's only context */
551 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
553 if (br_vlan_is_master(v)) {
554 if (br_vlan_is_brentry(v))
563 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
565 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
568 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
570 bool ret = vid > 0 && vid < VLAN_VID_MASK;
573 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
578 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
579 const struct bridge_vlan_info *last,
580 struct netlink_ext_ack *extack)
582 /* pvid flag is not allowed in ranges */
583 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
584 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
588 /* when cur is the range end, check if:
589 * - it has range start flag
590 * - range ids are invalid (end is equal to or before start)
593 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
594 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
596 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
597 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
599 } else if (cur->vid <= last->vid) {
600 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
605 /* check for required range flags */
606 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
607 BRIDGE_VLAN_INFO_RANGE_END))) {
608 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
615 static inline int br_afspec_cmd_to_rtm(int cmd)
627 static inline int br_opt_get(const struct net_bridge *br,
628 enum net_bridge_opts opt)
630 return test_bit(opt, &br->options);
633 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
634 struct netlink_ext_ack *extack);
635 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
636 int br_boolopt_multi_toggle(struct net_bridge *br,
637 struct br_boolopt_multi *bm,
638 struct netlink_ext_ack *extack);
639 void br_boolopt_multi_get(const struct net_bridge *br,
640 struct br_boolopt_multi *bm);
641 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
644 void br_dev_setup(struct net_device *dev);
645 void br_dev_delete(struct net_device *dev, struct list_head *list);
646 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
647 #ifdef CONFIG_NET_POLL_CONTROLLER
648 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
651 netpoll_send_skb(p->np, skb);
654 int br_netpoll_enable(struct net_bridge_port *p);
655 void br_netpoll_disable(struct net_bridge_port *p);
657 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
662 static inline int br_netpoll_enable(struct net_bridge_port *p)
667 static inline void br_netpoll_disable(struct net_bridge_port *p)
673 int br_fdb_init(void);
674 void br_fdb_fini(void);
675 int br_fdb_hash_init(struct net_bridge *br);
676 void br_fdb_hash_fini(struct net_bridge *br);
677 void br_fdb_flush(struct net_bridge *br);
678 void br_fdb_find_delete_local(struct net_bridge *br,
679 const struct net_bridge_port *p,
680 const unsigned char *addr, u16 vid);
681 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
682 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
683 void br_fdb_cleanup(struct work_struct *work);
684 void br_fdb_delete_by_port(struct net_bridge *br,
685 const struct net_bridge_port *p, u16 vid, int do_all);
686 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
687 const unsigned char *addr,
689 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
690 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
692 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
693 const unsigned char *addr, u16 vid);
694 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
695 const unsigned char *addr, u16 vid, unsigned long flags);
697 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
698 struct net_device *dev, const unsigned char *addr, u16 vid);
699 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
700 const unsigned char *addr, u16 vid, u16 nlh_flags,
701 struct netlink_ext_ack *extack);
702 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
703 struct net_device *dev, struct net_device *fdev, int *idx);
704 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
705 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
706 struct netlink_ext_ack *extack);
707 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
708 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
709 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
710 const unsigned char *addr, u16 vid,
712 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
713 const unsigned char *addr, u16 vid,
715 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
716 const unsigned char *addr, u16 vid, bool offloaded);
724 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
725 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
726 bool local_rcv, bool local_orig);
727 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
728 void br_flood(struct net_bridge *br, struct sk_buff *skb,
729 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
731 /* return true if both source port and dest port are isolated */
732 static inline bool br_skb_isolated(const struct net_bridge_port *to,
733 const struct sk_buff *skb)
735 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
736 (to->flags & BR_ISOLATED);
740 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
741 int br_add_bridge(struct net *net, const char *name);
742 int br_del_bridge(struct net *net, const char *name);
743 int br_add_if(struct net_bridge *br, struct net_device *dev,
744 struct netlink_ext_ack *extack);
745 int br_del_if(struct net_bridge *br, struct net_device *dev);
746 void br_mtu_auto_adjust(struct net_bridge *br);
747 netdev_features_t br_features_recompute(struct net_bridge *br,
748 netdev_features_t features);
749 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
750 void br_manage_promisc(struct net_bridge *br);
751 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
754 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
755 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
757 struct br_frame_type {
759 int (*frame_handler)(struct net_bridge_port *port,
760 struct sk_buff *skb);
761 struct hlist_node list;
764 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
765 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
767 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
769 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
772 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
774 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
777 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
779 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
782 static inline struct net_bridge_port *
783 br_port_get_check_rtnl(const struct net_device *dev)
785 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
789 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
790 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
794 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
795 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
796 struct sk_buff *skb, u16 vid);
797 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
798 struct sk_buff *skb, u16 vid);
799 int br_multicast_add_port(struct net_bridge_port *port);
800 void br_multicast_del_port(struct net_bridge_port *port);
801 void br_multicast_enable_port(struct net_bridge_port *port);
802 void br_multicast_disable_port(struct net_bridge_port *port);
803 void br_multicast_init(struct net_bridge *br);
804 void br_multicast_join_snoopers(struct net_bridge *br);
805 void br_multicast_leave_snoopers(struct net_bridge *br);
806 void br_multicast_open(struct net_bridge *br);
807 void br_multicast_stop(struct net_bridge *br);
808 void br_multicast_dev_del(struct net_bridge *br);
809 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
810 struct sk_buff *skb, bool local_rcv, bool local_orig);
811 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
812 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
813 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
814 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
815 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
816 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
817 #if IS_ENABLED(CONFIG_IPV6)
818 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
820 struct net_bridge_mdb_entry *
821 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
822 struct net_bridge_mdb_entry *
823 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
824 struct net_bridge_port_group *
825 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
826 struct net_bridge_port_group __rcu *next,
827 unsigned char flags, const unsigned char *src,
828 u8 filter_mode, u8 rt_protocol);
829 int br_mdb_hash_init(struct net_bridge *br);
830 void br_mdb_hash_fini(struct net_bridge *br);
831 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
832 struct net_bridge_port_group *pg, int type);
833 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
835 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
836 struct net_bridge_port_group *pg,
837 struct net_bridge_port_group __rcu **pp);
838 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
839 const struct sk_buff *skb, u8 type, u8 dir);
840 int br_multicast_init_stats(struct net_bridge *br);
841 void br_multicast_uninit_stats(struct net_bridge *br);
842 void br_multicast_get_stats(const struct net_bridge *br,
843 const struct net_bridge_port *p,
844 struct br_mcast_stats *dest);
845 void br_mdb_init(void);
846 void br_mdb_uninit(void);
847 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
848 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
849 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
851 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
852 struct net_bridge_port_group *sg);
853 struct net_bridge_group_src *
854 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
855 void br_multicast_del_group_src(struct net_bridge_group_src *src,
858 static inline bool br_group_is_l2(const struct br_ip *group)
860 return group->proto == 0;
863 #define mlock_dereference(X, br) \
864 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
866 static inline bool br_multicast_is_router(struct net_bridge *br)
868 return br->multicast_router == 2 ||
869 (br->multicast_router == 1 &&
870 timer_pending(&br->multicast_router_timer));
874 __br_multicast_querier_exists(struct net_bridge *br,
875 struct bridge_mcast_other_query *querier,
878 bool own_querier_enabled;
880 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
881 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
882 own_querier_enabled = false;
884 own_querier_enabled = true;
886 own_querier_enabled = false;
889 return time_is_before_jiffies(querier->delay_time) &&
890 (own_querier_enabled || timer_pending(&querier->timer));
893 static inline bool br_multicast_querier_exists(struct net_bridge *br,
895 const struct net_bridge_mdb_entry *mdb)
897 switch (eth->h_proto) {
898 case (htons(ETH_P_IP)):
899 return __br_multicast_querier_exists(br,
900 &br->ip4_other_query, false);
901 #if IS_ENABLED(CONFIG_IPV6)
902 case (htons(ETH_P_IPV6)):
903 return __br_multicast_querier_exists(br,
904 &br->ip6_other_query, true);
907 return !!mdb && br_group_is_l2(&mdb->addr);
911 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
914 case htons(ETH_P_IP):
915 return ipv4_is_zeronet(ip->src.ip4);
916 #if IS_ENABLED(CONFIG_IPV6)
917 case htons(ETH_P_IPV6):
918 return ipv6_addr_any(&ip->src.ip6);
925 static inline bool br_multicast_should_handle_mode(const struct net_bridge *br,
929 case htons(ETH_P_IP):
930 return !!(br->multicast_igmp_version == 3);
931 #if IS_ENABLED(CONFIG_IPV6)
932 case htons(ETH_P_IPV6):
933 return !!(br->multicast_mld_version == 2);
940 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
942 return BR_INPUT_SKB_CB(skb)->igmp;
945 static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
947 return br->multicast_last_member_interval *
948 br->multicast_last_member_count;
951 static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
953 /* use the RFC default of 2 for QRV */
954 return 2 * br->multicast_query_interval +
955 br->multicast_query_response_interval;
958 static inline int br_multicast_rcv(struct net_bridge *br,
959 struct net_bridge_port *port,
966 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
967 struct sk_buff *skb, u16 vid)
972 static inline int br_multicast_add_port(struct net_bridge_port *port)
977 static inline void br_multicast_del_port(struct net_bridge_port *port)
981 static inline void br_multicast_enable_port(struct net_bridge_port *port)
985 static inline void br_multicast_disable_port(struct net_bridge_port *port)
989 static inline void br_multicast_init(struct net_bridge *br)
993 static inline void br_multicast_join_snoopers(struct net_bridge *br)
997 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1001 static inline void br_multicast_open(struct net_bridge *br)
1005 static inline void br_multicast_stop(struct net_bridge *br)
1009 static inline void br_multicast_dev_del(struct net_bridge *br)
1013 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1014 struct sk_buff *skb,
1015 bool local_rcv, bool local_orig)
1019 static inline bool br_multicast_is_router(struct net_bridge *br)
1024 static inline bool br_multicast_querier_exists(struct net_bridge *br,
1026 const struct net_bridge_mdb_entry *mdb)
1031 static inline void br_mdb_init(void)
1035 static inline void br_mdb_uninit(void)
1039 static inline int br_mdb_hash_init(struct net_bridge *br)
1044 static inline void br_mdb_hash_fini(struct net_bridge *br)
1048 static inline void br_multicast_count(struct net_bridge *br,
1049 const struct net_bridge_port *p,
1050 const struct sk_buff *skb,
1055 static inline int br_multicast_init_stats(struct net_bridge *br)
1060 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1064 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1071 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1072 bool br_allowed_ingress(const struct net_bridge *br,
1073 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1074 u16 *vid, u8 *state);
1075 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1076 const struct sk_buff *skb);
1077 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1078 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1079 const struct net_bridge_port *port,
1080 struct net_bridge_vlan_group *vg,
1081 struct sk_buff *skb);
1082 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1083 bool *changed, struct netlink_ext_ack *extack);
1084 int br_vlan_delete(struct net_bridge *br, u16 vid);
1085 void br_vlan_flush(struct net_bridge *br);
1086 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1087 void br_recalculate_fwd_mask(struct net_bridge *br);
1088 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1089 struct netlink_ext_ack *extack);
1090 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1091 struct netlink_ext_ack *extack);
1092 int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1093 struct netlink_ext_ack *extack);
1094 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1095 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1096 int br_vlan_init(struct net_bridge *br);
1097 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1098 struct netlink_ext_ack *extack);
1099 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1100 struct netlink_ext_ack *extack);
1101 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1102 bool *changed, struct netlink_ext_ack *extack);
1103 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1104 void nbp_vlan_flush(struct net_bridge_port *port);
1105 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1106 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1107 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1108 struct pcpu_sw_netstats *stats);
1109 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1110 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1112 void br_vlan_rtnl_init(void);
1113 void br_vlan_rtnl_uninit(void);
1114 void br_vlan_notify(const struct net_bridge *br,
1115 const struct net_bridge_port *p,
1116 u16 vid, u16 vid_range,
1118 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1119 const struct net_bridge_vlan *range_end);
1121 static inline struct net_bridge_vlan_group *br_vlan_group(
1122 const struct net_bridge *br)
1124 return rtnl_dereference(br->vlgrp);
1127 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1128 const struct net_bridge_port *p)
1130 return rtnl_dereference(p->vlgrp);
1133 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1134 const struct net_bridge *br)
1136 return rcu_dereference(br->vlgrp);
1139 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1140 const struct net_bridge_port *p)
1142 return rcu_dereference(p->vlgrp);
1145 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1146 * skb, the vlan tag will always be present if the frame was tagged.
1148 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1152 if (skb_vlan_tag_present(skb)) {
1153 *vid = skb_vlan_tag_get_id(skb);
1162 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1171 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1173 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1176 static inline bool br_allowed_ingress(const struct net_bridge *br,
1177 struct net_bridge_vlan_group *vg,
1178 struct sk_buff *skb,
1179 u16 *vid, u8 *state)
1184 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1185 const struct sk_buff *skb)
1190 static inline bool br_should_learn(struct net_bridge_port *p,
1191 struct sk_buff *skb, u16 *vid)
1196 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1197 const struct net_bridge_port *port,
1198 struct net_bridge_vlan_group *vg,
1199 struct sk_buff *skb)
1204 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1205 bool *changed, struct netlink_ext_ack *extack)
1211 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1216 static inline void br_vlan_flush(struct net_bridge *br)
1220 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1224 static inline int br_vlan_init(struct net_bridge *br)
1229 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1230 bool *changed, struct netlink_ext_ack *extack)
1236 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1241 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1245 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1251 static inline int nbp_vlan_init(struct net_bridge_port *port,
1252 struct netlink_ext_ack *extack)
1257 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1262 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1267 static inline int br_vlan_filter_toggle(struct net_bridge *br,
1269 struct netlink_ext_ack *extack)
1274 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1280 static inline struct net_bridge_vlan_group *br_vlan_group(
1281 const struct net_bridge *br)
1286 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1287 const struct net_bridge_port *p)
1292 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1293 const struct net_bridge *br)
1298 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1299 const struct net_bridge_port *p)
1304 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1305 struct pcpu_sw_netstats *stats)
1309 static inline void br_vlan_port_event(struct net_bridge_port *p,
1310 unsigned long event)
1314 static inline int br_vlan_bridge_event(struct net_device *dev,
1315 unsigned long event, void *ptr)
1320 static inline void br_vlan_rtnl_init(void)
1324 static inline void br_vlan_rtnl_uninit(void)
1328 static inline void br_vlan_notify(const struct net_bridge *br,
1329 const struct net_bridge_port *p,
1330 u16 vid, u16 vid_range,
1335 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1336 const struct net_bridge_vlan *range_end)
1342 /* br_vlan_options.c */
1343 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1344 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1345 const struct net_bridge_vlan *range_end);
1346 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v);
1347 size_t br_vlan_opts_nl_size(void);
1348 int br_vlan_process_options(const struct net_bridge *br,
1349 const struct net_bridge_port *p,
1350 struct net_bridge_vlan *range_start,
1351 struct net_bridge_vlan *range_end,
1353 struct netlink_ext_ack *extack);
1355 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
1356 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1358 return READ_ONCE(v->state);
1361 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1363 WRITE_ONCE(v->state, state);
1366 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1368 return READ_ONCE(vg->pvid_state);
1371 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1374 WRITE_ONCE(vg->pvid_state, state);
1377 /* learn_allow is true at ingress and false at egress */
1378 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1381 case BR_STATE_LEARNING:
1383 case BR_STATE_FORWARDING:
1392 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1394 extern const struct nf_br_ops __rcu *nf_br_ops;
1396 /* br_netfilter.c */
1397 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1398 int br_nf_core_init(void);
1399 void br_nf_core_fini(void);
1400 void br_netfilter_rtable_init(struct net_bridge *);
1402 static inline int br_nf_core_init(void) { return 0; }
1403 static inline void br_nf_core_fini(void) {}
1404 #define br_netfilter_rtable_init(x)
1408 void br_set_state(struct net_bridge_port *p, unsigned int state);
1409 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1410 void br_init_port(struct net_bridge_port *p);
1411 void br_become_designated_port(struct net_bridge_port *p);
1413 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1414 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1415 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1416 int br_set_max_age(struct net_bridge *br, unsigned long x);
1417 int __set_ageing_time(struct net_device *dev, unsigned long t);
1418 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1422 void br_stp_enable_bridge(struct net_bridge *br);
1423 void br_stp_disable_bridge(struct net_bridge *br);
1424 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1425 struct netlink_ext_ack *extack);
1426 void br_stp_enable_port(struct net_bridge_port *p);
1427 void br_stp_disable_port(struct net_bridge_port *p);
1428 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1429 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1430 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1431 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1432 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1433 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1437 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1438 struct net_device *dev);
1440 /* br_stp_timer.c */
1441 void br_stp_timer_init(struct net_bridge *br);
1442 void br_stp_port_timer_init(struct net_bridge_port *p);
1443 unsigned long br_timer_value(const struct timer_list *timer);
1446 #if IS_ENABLED(CONFIG_ATM_LANE)
1447 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1451 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1452 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1453 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1454 bool br_mrp_enabled(struct net_bridge *br);
1455 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1456 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1458 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1459 struct nlattr *attr, int cmd,
1460 struct netlink_ext_ack *extack)
1465 static inline bool br_mrp_enabled(struct net_bridge *br)
1470 static inline void br_mrp_port_del(struct net_bridge *br,
1471 struct net_bridge_port *p)
1475 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
1483 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
1484 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1485 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1486 bool br_cfm_created(struct net_bridge *br);
1487 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
1488 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
1489 int br_cfm_status_fill_info(struct sk_buff *skb,
1490 struct net_bridge *br,
1492 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
1493 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
1495 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1496 struct nlattr *attr, int cmd,
1497 struct netlink_ext_ack *extack)
1502 static inline bool br_cfm_created(struct net_bridge *br)
1507 static inline void br_cfm_port_del(struct net_bridge *br,
1508 struct net_bridge_port *p)
1512 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
1517 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
1518 struct net_bridge *br,
1524 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
1529 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
1536 extern struct rtnl_link_ops br_link_ops;
1537 int br_netlink_init(void);
1538 void br_netlink_fini(void);
1539 void br_ifinfo_notify(int event, const struct net_bridge *br,
1540 const struct net_bridge_port *port);
1541 void br_info_notify(int event, const struct net_bridge *br,
1542 const struct net_bridge_port *port, u32 filter);
1543 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1544 struct netlink_ext_ack *extack);
1545 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1546 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1547 u32 filter_mask, int nlflags);
1548 int br_process_vlan_info(struct net_bridge *br,
1549 struct net_bridge_port *p, int cmd,
1550 struct bridge_vlan_info *vinfo_curr,
1551 struct bridge_vlan_info **vinfo_last,
1553 struct netlink_ext_ack *extack);
1557 extern const struct sysfs_ops brport_sysfs_ops;
1558 int br_sysfs_addif(struct net_bridge_port *p);
1559 int br_sysfs_renameif(struct net_bridge_port *p);
1562 int br_sysfs_addbr(struct net_device *dev);
1563 void br_sysfs_delbr(struct net_device *dev);
1567 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1568 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1569 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1570 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1571 #endif /* CONFIG_SYSFS */
1573 /* br_switchdev.c */
1574 #ifdef CONFIG_NET_SWITCHDEV
1575 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1576 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1577 struct sk_buff *skb);
1578 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1579 const struct sk_buff *skb);
1580 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1581 unsigned long flags,
1583 struct netlink_ext_ack *extack);
1584 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1586 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1587 struct netlink_ext_ack *extack);
1588 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1590 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1592 skb->offload_fwd_mark = 0;
1595 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1600 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1601 struct sk_buff *skb)
1605 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1606 const struct sk_buff *skb)
1611 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1612 unsigned long flags,
1614 struct netlink_ext_ack *extack)
1619 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1621 struct netlink_ext_ack *extack)
1626 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1632 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1636 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1639 #endif /* CONFIG_NET_SWITCHDEV */
1641 /* br_arp_nd_proxy.c */
1642 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1643 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1644 u16 vid, struct net_bridge_port *p);
1645 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1646 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1647 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);