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;
256 struct rhash_head rhnode;
257 struct net_bridge_mcast_gc mcast_gc;
261 struct net_bridge_mdb_entry {
262 struct rhash_head rhnode;
263 struct net_bridge *br;
264 struct net_bridge_port_group __rcu *ports;
268 struct timer_list timer;
269 struct hlist_node mdb_node;
271 struct net_bridge_mcast_gc mcast_gc;
275 struct net_bridge_port {
276 struct net_bridge *br;
277 struct net_device *dev;
278 struct list_head list;
281 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
282 struct net_bridge_vlan_group __rcu *vlgrp;
284 struct net_bridge_port __rcu *backup_port;
290 unsigned char topology_change_ack;
291 unsigned char config_pending;
293 port_id designated_port;
294 bridge_id designated_root;
295 bridge_id designated_bridge;
298 unsigned long designated_age;
300 struct timer_list forward_delay_timer;
301 struct timer_list hold_timer;
302 struct timer_list message_age_timer;
306 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
307 struct bridge_mcast_own_query ip4_own_query;
308 #if IS_ENABLED(CONFIG_IPV6)
309 struct bridge_mcast_own_query ip6_own_query;
310 #endif /* IS_ENABLED(CONFIG_IPV6) */
311 unsigned char multicast_router;
312 struct bridge_mcast_stats __percpu *mcast_stats;
313 struct timer_list multicast_router_timer;
314 struct hlist_head mglist;
315 struct hlist_node rlist;
319 char sysfs_name[IFNAMSIZ];
322 #ifdef CONFIG_NET_POLL_CONTROLLER
325 #ifdef CONFIG_NET_SWITCHDEV
326 int offload_fwd_mark;
329 u16 backup_redirected_cnt;
331 struct bridge_stp_xstats stp_xstats;
334 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
336 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
337 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
339 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
341 return rcu_dereference(dev->rx_handler_data);
344 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
346 return netif_is_bridge_port(dev) ?
347 rtnl_dereference(dev->rx_handler_data) : NULL;
350 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
352 return netif_is_bridge_port(dev) ?
353 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
356 enum net_bridge_opts {
358 BROPT_VLAN_STATS_ENABLED,
359 BROPT_NF_CALL_IPTABLES,
360 BROPT_NF_CALL_IP6TABLES,
361 BROPT_NF_CALL_ARPTABLES,
362 BROPT_GROUP_ADDR_SET,
363 BROPT_MULTICAST_ENABLED,
364 BROPT_MULTICAST_QUERIER,
365 BROPT_MULTICAST_QUERY_USE_IFADDR,
366 BROPT_MULTICAST_STATS_ENABLED,
368 BROPT_NEIGH_SUPPRESS_ENABLED,
369 BROPT_MTU_SET_BY_USER,
370 BROPT_VLAN_STATS_PER_PORT,
372 BROPT_VLAN_BRIDGE_BINDING,
377 spinlock_t hash_lock;
378 struct hlist_head frame_type_list;
379 struct net_device *dev;
380 unsigned long options;
381 /* These fields are accessed on each packet */
382 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
385 struct net_bridge_vlan_group __rcu *vlgrp;
388 struct rhashtable fdb_hash_tbl;
389 struct list_head port_list;
390 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
392 struct rtable fake_rtable;
393 struct rt6_info fake_rt6_info;
397 u16 group_fwd_mask_required;
400 bridge_id designated_root;
402 unsigned char topology_change;
403 unsigned char topology_change_detected;
405 unsigned long max_age;
406 unsigned long hello_time;
407 unsigned long forward_delay;
408 unsigned long ageing_time;
409 unsigned long bridge_max_age;
410 unsigned long bridge_hello_time;
411 unsigned long bridge_forward_delay;
412 unsigned long bridge_ageing_time;
415 u8 group_addr[ETH_ALEN];
418 BR_NO_STP, /* no spanning tree */
419 BR_KERNEL_STP, /* old STP in kernel */
420 BR_USER_STP, /* new RSTP in userspace */
423 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
427 u32 multicast_last_member_count;
428 u32 multicast_startup_query_count;
430 u8 multicast_igmp_version;
432 #if IS_ENABLED(CONFIG_IPV6)
433 u8 multicast_mld_version;
435 spinlock_t multicast_lock;
436 unsigned long multicast_last_member_interval;
437 unsigned long multicast_membership_interval;
438 unsigned long multicast_querier_interval;
439 unsigned long multicast_query_interval;
440 unsigned long multicast_query_response_interval;
441 unsigned long multicast_startup_query_interval;
443 struct rhashtable mdb_hash_tbl;
444 struct rhashtable sg_port_tbl;
446 struct hlist_head mcast_gc_list;
447 struct hlist_head mdb_list;
448 struct hlist_head router_list;
450 struct timer_list multicast_router_timer;
451 struct bridge_mcast_other_query ip4_other_query;
452 struct bridge_mcast_own_query ip4_own_query;
453 struct bridge_mcast_querier ip4_querier;
454 struct bridge_mcast_stats __percpu *mcast_stats;
455 #if IS_ENABLED(CONFIG_IPV6)
456 struct bridge_mcast_other_query ip6_other_query;
457 struct bridge_mcast_own_query ip6_own_query;
458 struct bridge_mcast_querier ip6_querier;
459 #endif /* IS_ENABLED(CONFIG_IPV6) */
460 struct work_struct mcast_gc_work;
463 struct timer_list hello_timer;
464 struct timer_list tcn_timer;
465 struct timer_list topology_change_timer;
466 struct delayed_work gc_work;
467 struct kobject *ifobj;
470 #ifdef CONFIG_NET_SWITCHDEV
471 int offload_fwd_mark;
473 struct hlist_head fdb_list;
475 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
476 struct hlist_head mrp_list;
478 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
479 struct hlist_head mep_list;
483 struct br_input_skb_cb {
484 struct net_device *brdev;
487 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
491 u8 proxyarp_replied:1;
492 u8 src_port_isolated:1;
493 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
496 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
497 u8 br_netfilter_broute:1;
500 #ifdef CONFIG_NET_SWITCHDEV
501 int offload_fwd_mark;
505 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
507 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
508 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
510 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
513 #define br_printk(level, br, format, args...) \
514 printk(level "%s: " format, (br)->dev->name, ##args)
516 #define br_err(__br, format, args...) \
517 br_printk(KERN_ERR, __br, format, ##args)
518 #define br_warn(__br, format, args...) \
519 br_printk(KERN_WARNING, __br, format, ##args)
520 #define br_notice(__br, format, args...) \
521 br_printk(KERN_NOTICE, __br, format, ##args)
522 #define br_info(__br, format, args...) \
523 br_printk(KERN_INFO, __br, format, ##args)
525 #define br_debug(br, format, args...) \
526 pr_debug("%s: " format, (br)->dev->name, ##args)
528 /* called under bridge lock */
529 static inline int br_is_root_bridge(const struct net_bridge *br)
531 return !memcmp(&br->bridge_id, &br->designated_root, 8);
534 /* check if a VLAN entry is global */
535 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
537 return v->flags & BRIDGE_VLAN_INFO_MASTER;
540 /* check if a VLAN entry is used by the bridge */
541 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
543 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
546 /* check if we should use the vlan entry, returns false if it's only context */
547 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
549 if (br_vlan_is_master(v)) {
550 if (br_vlan_is_brentry(v))
559 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
561 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
564 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
566 bool ret = vid > 0 && vid < VLAN_VID_MASK;
569 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
574 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
575 const struct bridge_vlan_info *last,
576 struct netlink_ext_ack *extack)
578 /* pvid flag is not allowed in ranges */
579 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
580 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
584 /* when cur is the range end, check if:
585 * - it has range start flag
586 * - range ids are invalid (end is equal to or before start)
589 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
590 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
592 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
593 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
595 } else if (cur->vid <= last->vid) {
596 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
601 /* check for required range flags */
602 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
603 BRIDGE_VLAN_INFO_RANGE_END))) {
604 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
611 static inline int br_afspec_cmd_to_rtm(int cmd)
623 static inline int br_opt_get(const struct net_bridge *br,
624 enum net_bridge_opts opt)
626 return test_bit(opt, &br->options);
629 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
630 struct netlink_ext_ack *extack);
631 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
632 int br_boolopt_multi_toggle(struct net_bridge *br,
633 struct br_boolopt_multi *bm,
634 struct netlink_ext_ack *extack);
635 void br_boolopt_multi_get(const struct net_bridge *br,
636 struct br_boolopt_multi *bm);
637 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
640 void br_dev_setup(struct net_device *dev);
641 void br_dev_delete(struct net_device *dev, struct list_head *list);
642 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
643 #ifdef CONFIG_NET_POLL_CONTROLLER
644 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
647 netpoll_send_skb(p->np, skb);
650 int br_netpoll_enable(struct net_bridge_port *p);
651 void br_netpoll_disable(struct net_bridge_port *p);
653 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
658 static inline int br_netpoll_enable(struct net_bridge_port *p)
663 static inline void br_netpoll_disable(struct net_bridge_port *p)
669 int br_fdb_init(void);
670 void br_fdb_fini(void);
671 int br_fdb_hash_init(struct net_bridge *br);
672 void br_fdb_hash_fini(struct net_bridge *br);
673 void br_fdb_flush(struct net_bridge *br);
674 void br_fdb_find_delete_local(struct net_bridge *br,
675 const struct net_bridge_port *p,
676 const unsigned char *addr, u16 vid);
677 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
678 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
679 void br_fdb_cleanup(struct work_struct *work);
680 void br_fdb_delete_by_port(struct net_bridge *br,
681 const struct net_bridge_port *p, u16 vid, int do_all);
682 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
683 const unsigned char *addr,
685 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
686 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
688 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
689 const unsigned char *addr, u16 vid);
690 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
691 const unsigned char *addr, u16 vid, unsigned long flags);
693 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
694 struct net_device *dev, const unsigned char *addr, u16 vid);
695 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
696 const unsigned char *addr, u16 vid, u16 nlh_flags,
697 struct netlink_ext_ack *extack);
698 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
699 struct net_device *dev, struct net_device *fdev, int *idx);
700 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
701 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
702 struct netlink_ext_ack *extack);
703 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
704 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
705 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
706 const unsigned char *addr, u16 vid,
708 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
709 const unsigned char *addr, u16 vid,
711 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
712 const unsigned char *addr, u16 vid, bool offloaded);
720 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
721 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
722 bool local_rcv, bool local_orig);
723 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
724 void br_flood(struct net_bridge *br, struct sk_buff *skb,
725 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
727 /* return true if both source port and dest port are isolated */
728 static inline bool br_skb_isolated(const struct net_bridge_port *to,
729 const struct sk_buff *skb)
731 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
732 (to->flags & BR_ISOLATED);
736 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
737 int br_add_bridge(struct net *net, const char *name);
738 int br_del_bridge(struct net *net, const char *name);
739 int br_add_if(struct net_bridge *br, struct net_device *dev,
740 struct netlink_ext_ack *extack);
741 int br_del_if(struct net_bridge *br, struct net_device *dev);
742 void br_mtu_auto_adjust(struct net_bridge *br);
743 netdev_features_t br_features_recompute(struct net_bridge *br,
744 netdev_features_t features);
745 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
746 void br_manage_promisc(struct net_bridge *br);
747 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
750 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
751 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
753 struct br_frame_type {
755 int (*frame_handler)(struct net_bridge_port *port,
756 struct sk_buff *skb);
757 struct hlist_node list;
760 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
761 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
763 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
765 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
768 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
770 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
773 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
775 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
778 static inline struct net_bridge_port *
779 br_port_get_check_rtnl(const struct net_device *dev)
781 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
785 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
786 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
790 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
791 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
792 struct sk_buff *skb, u16 vid);
793 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
794 struct sk_buff *skb, u16 vid);
795 int br_multicast_add_port(struct net_bridge_port *port);
796 void br_multicast_del_port(struct net_bridge_port *port);
797 void br_multicast_enable_port(struct net_bridge_port *port);
798 void br_multicast_disable_port(struct net_bridge_port *port);
799 void br_multicast_init(struct net_bridge *br);
800 void br_multicast_join_snoopers(struct net_bridge *br);
801 void br_multicast_leave_snoopers(struct net_bridge *br);
802 void br_multicast_open(struct net_bridge *br);
803 void br_multicast_stop(struct net_bridge *br);
804 void br_multicast_dev_del(struct net_bridge *br);
805 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
806 struct sk_buff *skb, bool local_rcv, bool local_orig);
807 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
808 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
809 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
810 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
811 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
812 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
813 #if IS_ENABLED(CONFIG_IPV6)
814 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
816 struct net_bridge_mdb_entry *
817 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
818 struct net_bridge_mdb_entry *
819 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
820 struct net_bridge_port_group *
821 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
822 struct net_bridge_port_group __rcu *next,
823 unsigned char flags, const unsigned char *src,
824 u8 filter_mode, u8 rt_protocol);
825 int br_mdb_hash_init(struct net_bridge *br);
826 void br_mdb_hash_fini(struct net_bridge *br);
827 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
828 struct net_bridge_port_group *pg, int type);
829 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
831 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
832 struct net_bridge_port_group *pg,
833 struct net_bridge_port_group __rcu **pp);
834 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
835 const struct sk_buff *skb, u8 type, u8 dir);
836 int br_multicast_init_stats(struct net_bridge *br);
837 void br_multicast_uninit_stats(struct net_bridge *br);
838 void br_multicast_get_stats(const struct net_bridge *br,
839 const struct net_bridge_port *p,
840 struct br_mcast_stats *dest);
841 void br_mdb_init(void);
842 void br_mdb_uninit(void);
843 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
844 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
845 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
847 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
848 struct net_bridge_port_group *sg);
850 static inline bool br_group_is_l2(const struct br_ip *group)
852 return group->proto == 0;
855 #define mlock_dereference(X, br) \
856 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
858 static inline bool br_multicast_is_router(struct net_bridge *br)
860 return br->multicast_router == 2 ||
861 (br->multicast_router == 1 &&
862 timer_pending(&br->multicast_router_timer));
866 __br_multicast_querier_exists(struct net_bridge *br,
867 struct bridge_mcast_other_query *querier,
870 bool own_querier_enabled;
872 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
873 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
874 own_querier_enabled = false;
876 own_querier_enabled = true;
878 own_querier_enabled = false;
881 return time_is_before_jiffies(querier->delay_time) &&
882 (own_querier_enabled || timer_pending(&querier->timer));
885 static inline bool br_multicast_querier_exists(struct net_bridge *br,
887 const struct net_bridge_mdb_entry *mdb)
889 switch (eth->h_proto) {
890 case (htons(ETH_P_IP)):
891 return __br_multicast_querier_exists(br,
892 &br->ip4_other_query, false);
893 #if IS_ENABLED(CONFIG_IPV6)
894 case (htons(ETH_P_IPV6)):
895 return __br_multicast_querier_exists(br,
896 &br->ip6_other_query, true);
899 return !!mdb && br_group_is_l2(&mdb->addr);
903 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
906 case htons(ETH_P_IP):
907 return ipv4_is_zeronet(ip->src.ip4);
908 #if IS_ENABLED(CONFIG_IPV6)
909 case htons(ETH_P_IPV6):
910 return ipv6_addr_any(&ip->src.ip6);
917 static inline bool br_multicast_should_handle_mode(const struct net_bridge *br,
921 case htons(ETH_P_IP):
922 return !!(br->multicast_igmp_version == 3);
923 #if IS_ENABLED(CONFIG_IPV6)
924 case htons(ETH_P_IPV6):
925 return !!(br->multicast_mld_version == 2);
932 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
934 return BR_INPUT_SKB_CB(skb)->igmp;
937 static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
939 return br->multicast_last_member_interval *
940 br->multicast_last_member_count;
943 static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
945 /* use the RFC default of 2 for QRV */
946 return 2 * br->multicast_query_interval +
947 br->multicast_query_response_interval;
950 static inline int br_multicast_rcv(struct net_bridge *br,
951 struct net_bridge_port *port,
958 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
959 struct sk_buff *skb, u16 vid)
964 static inline int br_multicast_add_port(struct net_bridge_port *port)
969 static inline void br_multicast_del_port(struct net_bridge_port *port)
973 static inline void br_multicast_enable_port(struct net_bridge_port *port)
977 static inline void br_multicast_disable_port(struct net_bridge_port *port)
981 static inline void br_multicast_init(struct net_bridge *br)
985 static inline void br_multicast_join_snoopers(struct net_bridge *br)
989 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
993 static inline void br_multicast_open(struct net_bridge *br)
997 static inline void br_multicast_stop(struct net_bridge *br)
1001 static inline void br_multicast_dev_del(struct net_bridge *br)
1005 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1006 struct sk_buff *skb,
1007 bool local_rcv, bool local_orig)
1011 static inline bool br_multicast_is_router(struct net_bridge *br)
1016 static inline bool br_multicast_querier_exists(struct net_bridge *br,
1018 const struct net_bridge_mdb_entry *mdb)
1023 static inline void br_mdb_init(void)
1027 static inline void br_mdb_uninit(void)
1031 static inline int br_mdb_hash_init(struct net_bridge *br)
1036 static inline void br_mdb_hash_fini(struct net_bridge *br)
1040 static inline void br_multicast_count(struct net_bridge *br,
1041 const struct net_bridge_port *p,
1042 const struct sk_buff *skb,
1047 static inline int br_multicast_init_stats(struct net_bridge *br)
1052 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1056 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1063 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1064 bool br_allowed_ingress(const struct net_bridge *br,
1065 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1066 u16 *vid, u8 *state);
1067 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1068 const struct sk_buff *skb);
1069 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1070 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1071 const struct net_bridge_port *port,
1072 struct net_bridge_vlan_group *vg,
1073 struct sk_buff *skb);
1074 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1075 bool *changed, struct netlink_ext_ack *extack);
1076 int br_vlan_delete(struct net_bridge *br, u16 vid);
1077 void br_vlan_flush(struct net_bridge *br);
1078 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1079 void br_recalculate_fwd_mask(struct net_bridge *br);
1080 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1081 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
1082 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
1083 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
1084 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1085 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1086 int br_vlan_init(struct net_bridge *br);
1087 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
1088 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1089 struct netlink_ext_ack *extack);
1090 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1091 bool *changed, struct netlink_ext_ack *extack);
1092 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1093 void nbp_vlan_flush(struct net_bridge_port *port);
1094 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1095 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1096 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1097 struct pcpu_sw_netstats *stats);
1098 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1099 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1101 void br_vlan_rtnl_init(void);
1102 void br_vlan_rtnl_uninit(void);
1103 void br_vlan_notify(const struct net_bridge *br,
1104 const struct net_bridge_port *p,
1105 u16 vid, u16 vid_range,
1107 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1108 const struct net_bridge_vlan *range_end);
1110 static inline struct net_bridge_vlan_group *br_vlan_group(
1111 const struct net_bridge *br)
1113 return rtnl_dereference(br->vlgrp);
1116 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1117 const struct net_bridge_port *p)
1119 return rtnl_dereference(p->vlgrp);
1122 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1123 const struct net_bridge *br)
1125 return rcu_dereference(br->vlgrp);
1128 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1129 const struct net_bridge_port *p)
1131 return rcu_dereference(p->vlgrp);
1134 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1135 * skb, the vlan tag will always be present if the frame was tagged.
1137 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1141 if (skb_vlan_tag_present(skb)) {
1142 *vid = skb_vlan_tag_get_id(skb);
1151 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1160 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1162 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1165 static inline bool br_allowed_ingress(const struct net_bridge *br,
1166 struct net_bridge_vlan_group *vg,
1167 struct sk_buff *skb,
1168 u16 *vid, u8 *state)
1173 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1174 const struct sk_buff *skb)
1179 static inline bool br_should_learn(struct net_bridge_port *p,
1180 struct sk_buff *skb, u16 *vid)
1185 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1186 const struct net_bridge_port *port,
1187 struct net_bridge_vlan_group *vg,
1188 struct sk_buff *skb)
1193 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1194 bool *changed, struct netlink_ext_ack *extack)
1200 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1205 static inline void br_vlan_flush(struct net_bridge *br)
1209 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1213 static inline int br_vlan_init(struct net_bridge *br)
1218 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1219 bool *changed, struct netlink_ext_ack *extack)
1225 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1230 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1234 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1240 static inline int nbp_vlan_init(struct net_bridge_port *port,
1241 struct netlink_ext_ack *extack)
1246 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1251 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1256 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1262 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1268 static inline struct net_bridge_vlan_group *br_vlan_group(
1269 const struct net_bridge *br)
1274 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1275 const struct net_bridge_port *p)
1280 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1281 const struct net_bridge *br)
1286 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1287 const struct net_bridge_port *p)
1292 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1293 struct pcpu_sw_netstats *stats)
1297 static inline void br_vlan_port_event(struct net_bridge_port *p,
1298 unsigned long event)
1302 static inline int br_vlan_bridge_event(struct net_device *dev,
1303 unsigned long event, void *ptr)
1308 static inline void br_vlan_rtnl_init(void)
1312 static inline void br_vlan_rtnl_uninit(void)
1316 static inline void br_vlan_notify(const struct net_bridge *br,
1317 const struct net_bridge_port *p,
1318 u16 vid, u16 vid_range,
1323 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1324 const struct net_bridge_vlan *range_end)
1330 /* br_vlan_options.c */
1331 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1332 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1333 const struct net_bridge_vlan *range_end);
1334 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v);
1335 size_t br_vlan_opts_nl_size(void);
1336 int br_vlan_process_options(const struct net_bridge *br,
1337 const struct net_bridge_port *p,
1338 struct net_bridge_vlan *range_start,
1339 struct net_bridge_vlan *range_end,
1341 struct netlink_ext_ack *extack);
1343 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
1344 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1346 return READ_ONCE(v->state);
1349 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1351 WRITE_ONCE(v->state, state);
1354 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1356 return READ_ONCE(vg->pvid_state);
1359 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1362 WRITE_ONCE(vg->pvid_state, state);
1365 /* learn_allow is true at ingress and false at egress */
1366 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1369 case BR_STATE_LEARNING:
1371 case BR_STATE_FORWARDING:
1380 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1382 extern const struct nf_br_ops __rcu *nf_br_ops;
1384 /* br_netfilter.c */
1385 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1386 int br_nf_core_init(void);
1387 void br_nf_core_fini(void);
1388 void br_netfilter_rtable_init(struct net_bridge *);
1390 static inline int br_nf_core_init(void) { return 0; }
1391 static inline void br_nf_core_fini(void) {}
1392 #define br_netfilter_rtable_init(x)
1396 void br_set_state(struct net_bridge_port *p, unsigned int state);
1397 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1398 void br_init_port(struct net_bridge_port *p);
1399 void br_become_designated_port(struct net_bridge_port *p);
1401 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1402 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1403 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1404 int br_set_max_age(struct net_bridge *br, unsigned long x);
1405 int __set_ageing_time(struct net_device *dev, unsigned long t);
1406 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1410 void br_stp_enable_bridge(struct net_bridge *br);
1411 void br_stp_disable_bridge(struct net_bridge *br);
1412 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1413 struct netlink_ext_ack *extack);
1414 void br_stp_enable_port(struct net_bridge_port *p);
1415 void br_stp_disable_port(struct net_bridge_port *p);
1416 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1417 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1418 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1419 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1420 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1421 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1425 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1426 struct net_device *dev);
1428 /* br_stp_timer.c */
1429 void br_stp_timer_init(struct net_bridge *br);
1430 void br_stp_port_timer_init(struct net_bridge_port *p);
1431 unsigned long br_timer_value(const struct timer_list *timer);
1434 #if IS_ENABLED(CONFIG_ATM_LANE)
1435 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1439 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1440 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1441 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1442 bool br_mrp_enabled(struct net_bridge *br);
1443 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1444 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1446 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1447 struct nlattr *attr, int cmd,
1448 struct netlink_ext_ack *extack)
1453 static inline bool br_mrp_enabled(struct net_bridge *br)
1458 static inline void br_mrp_port_del(struct net_bridge *br,
1459 struct net_bridge_port *p)
1463 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
1471 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
1472 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1473 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1474 bool br_cfm_created(struct net_bridge *br);
1475 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
1476 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
1477 int br_cfm_status_fill_info(struct sk_buff *skb,
1478 struct net_bridge *br,
1480 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
1481 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
1483 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
1484 struct nlattr *attr, int cmd,
1485 struct netlink_ext_ack *extack)
1490 static inline bool br_cfm_created(struct net_bridge *br)
1495 static inline void br_cfm_port_del(struct net_bridge *br,
1496 struct net_bridge_port *p)
1500 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
1505 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
1506 struct net_bridge *br,
1512 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
1517 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
1524 extern struct rtnl_link_ops br_link_ops;
1525 int br_netlink_init(void);
1526 void br_netlink_fini(void);
1527 void br_ifinfo_notify(int event, const struct net_bridge *br,
1528 const struct net_bridge_port *port);
1529 void br_info_notify(int event, const struct net_bridge *br,
1530 const struct net_bridge_port *port, u32 filter);
1531 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1532 struct netlink_ext_ack *extack);
1533 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1534 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1535 u32 filter_mask, int nlflags);
1536 int br_process_vlan_info(struct net_bridge *br,
1537 struct net_bridge_port *p, int cmd,
1538 struct bridge_vlan_info *vinfo_curr,
1539 struct bridge_vlan_info **vinfo_last,
1541 struct netlink_ext_ack *extack);
1545 extern const struct sysfs_ops brport_sysfs_ops;
1546 int br_sysfs_addif(struct net_bridge_port *p);
1547 int br_sysfs_renameif(struct net_bridge_port *p);
1550 int br_sysfs_addbr(struct net_device *dev);
1551 void br_sysfs_delbr(struct net_device *dev);
1555 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1556 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1557 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1558 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1559 #endif /* CONFIG_SYSFS */
1561 /* br_switchdev.c */
1562 #ifdef CONFIG_NET_SWITCHDEV
1563 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1564 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1565 struct sk_buff *skb);
1566 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1567 const struct sk_buff *skb);
1568 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1569 unsigned long flags,
1570 unsigned long mask);
1571 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1573 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1574 struct netlink_ext_ack *extack);
1575 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1577 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1579 skb->offload_fwd_mark = 0;
1582 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1587 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1588 struct sk_buff *skb)
1592 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1593 const struct sk_buff *skb)
1598 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1599 unsigned long flags,
1605 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1607 struct netlink_ext_ack *extack)
1612 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1618 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1622 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1625 #endif /* CONFIG_NET_SWITCHDEV */
1627 /* br_arp_nd_proxy.c */
1628 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1629 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1630 u16 vid, struct net_bridge_port *p);
1631 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1632 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1633 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);