3 * Linux ethernet bridge
6 * Lennert Buytenhek <buytenh@gnu.org>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/rculist.h>
17 #include <linux/spinlock.h>
18 #include <linux/times.h>
19 #include <linux/netdevice.h>
20 #include <linux/etherdevice.h>
21 #include <linux/jhash.h>
22 #include <linux/random.h>
23 #include <linux/slab.h>
24 #include <linux/atomic.h>
25 #include <asm/unaligned.h>
26 #include <linux/if_vlan.h>
27 #include "br_private.h"
29 static struct kmem_cache *br_fdb_cache __read_mostly;
30 static struct net_bridge_fdb_entry *fdb_find(struct hlist_head *head,
31 const unsigned char *addr,
33 static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
34 const unsigned char *addr, u16 vid);
35 static void fdb_notify(struct net_bridge *br,
36 const struct net_bridge_fdb_entry *, int);
38 static u32 fdb_salt __read_mostly;
40 int __init br_fdb_init(void)
42 br_fdb_cache = kmem_cache_create("bridge_fdb_cache",
43 sizeof(struct net_bridge_fdb_entry),
45 SLAB_HWCACHE_ALIGN, NULL);
49 get_random_bytes(&fdb_salt, sizeof(fdb_salt));
53 void br_fdb_fini(void)
55 kmem_cache_destroy(br_fdb_cache);
59 /* if topology_changing then use forward_delay (default 15 sec)
60 * otherwise keep longer (default 5 minutes)
62 static inline unsigned long hold_time(const struct net_bridge *br)
64 return br->topology_change ? br->forward_delay : br->ageing_time;
67 static inline int has_expired(const struct net_bridge *br,
68 const struct net_bridge_fdb_entry *fdb)
70 return !fdb->is_static &&
71 time_before_eq(fdb->updated + hold_time(br), jiffies);
74 static inline int br_mac_hash(const unsigned char *mac, __u16 vid)
76 /* use 1 byte of OUI and 3 bytes of NIC */
77 u32 key = get_unaligned((u32 *)(mac + 2));
78 return jhash_2words(key, vid, fdb_salt) & (BR_HASH_SIZE - 1);
81 static void fdb_rcu_free(struct rcu_head *head)
83 struct net_bridge_fdb_entry *ent
84 = container_of(head, struct net_bridge_fdb_entry, rcu);
85 kmem_cache_free(br_fdb_cache, ent);
88 /* When a static FDB entry is added, the mac address from the entry is
89 * added to the bridge private HW address list and all required ports
90 * are then updated with the new information.
93 static void fdb_add_hw(struct net_bridge *br, const unsigned char *addr)
96 struct net_bridge_port *p, *tmp;
100 list_for_each_entry(p, &br->port_list, list) {
101 if (!br_promisc_port(p)) {
102 err = dev_uc_add(p->dev, addr);
110 list_for_each_entry(tmp, &br->port_list, list) {
113 if (!br_promisc_port(tmp))
114 dev_uc_del(tmp->dev, addr);
118 /* When a static FDB entry is deleted, the HW address from that entry is
119 * also removed from the bridge private HW address list and updates all
120 * the ports with needed information.
123 static void fdb_del_hw(struct net_bridge *br, const unsigned char *addr)
125 struct net_bridge_port *p;
129 list_for_each_entry(p, &br->port_list, list) {
130 if (!br_promisc_port(p))
131 dev_uc_del(p->dev, addr);
135 static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
138 fdb_del_hw(br, f->addr.addr);
140 hlist_del_rcu(&f->hlist);
141 fdb_notify(br, f, RTM_DELNEIGH);
142 call_rcu(&f->rcu, fdb_rcu_free);
145 /* Delete a local entry if no other port had the same address. */
146 static void fdb_delete_local(struct net_bridge *br,
147 const struct net_bridge_port *p,
148 struct net_bridge_fdb_entry *f)
150 const unsigned char *addr = f->addr.addr;
151 u16 vid = f->vlan_id;
152 struct net_bridge_port *op;
154 /* Maybe another port has same hw addr? */
155 list_for_each_entry(op, &br->port_list, list) {
156 if (op != p && ether_addr_equal(op->dev->dev_addr, addr) &&
157 (!vid || nbp_vlan_find(op, vid))) {
159 f->added_by_user = 0;
164 /* Maybe bridge device has same hw addr? */
165 if (p && ether_addr_equal(br->dev->dev_addr, addr) &&
166 (!vid || br_vlan_find(br, vid))) {
168 f->added_by_user = 0;
175 void br_fdb_find_delete_local(struct net_bridge *br,
176 const struct net_bridge_port *p,
177 const unsigned char *addr, u16 vid)
179 struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
180 struct net_bridge_fdb_entry *f;
182 spin_lock_bh(&br->hash_lock);
183 f = fdb_find(head, addr, vid);
184 if (f && f->is_local && !f->added_by_user && f->dst == p)
185 fdb_delete_local(br, p, f);
186 spin_unlock_bh(&br->hash_lock);
189 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
191 struct net_bridge *br = p->br;
192 struct net_port_vlans *pv = nbp_get_vlan_info(p);
197 spin_lock_bh(&br->hash_lock);
199 /* Search all chains since old address/hash is unknown */
200 for (i = 0; i < BR_HASH_SIZE; i++) {
201 struct hlist_node *h;
202 hlist_for_each(h, &br->hash[i]) {
203 struct net_bridge_fdb_entry *f;
205 f = hlist_entry(h, struct net_bridge_fdb_entry, hlist);
206 if (f->dst == p && f->is_local && !f->added_by_user) {
208 fdb_delete_local(br, p, f);
210 /* if this port has no vlan information
211 * configured, we can safely be done at
221 /* insert new address, may fail if invalid address or dup. */
222 fdb_insert(br, p, newaddr, 0);
227 /* Now add entries for every VLAN configured on the port.
228 * This function runs under RTNL so the bitmap will not change
231 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID)
232 fdb_insert(br, p, newaddr, vid);
235 spin_unlock_bh(&br->hash_lock);
238 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
240 struct net_bridge_fdb_entry *f;
241 struct net_port_vlans *pv;
244 spin_lock_bh(&br->hash_lock);
246 /* If old entry was unassociated with any port, then delete it. */
247 f = __br_fdb_get(br, br->dev->dev_addr, 0);
248 if (f && f->is_local && !f->dst)
249 fdb_delete_local(br, NULL, f);
251 fdb_insert(br, NULL, newaddr, 0);
253 /* Now remove and add entries for every VLAN configured on the
254 * bridge. This function runs under RTNL so the bitmap will not
255 * change from under us.
257 pv = br_get_vlan_info(br);
261 for_each_set_bit_from(vid, pv->vlan_bitmap, VLAN_N_VID) {
262 f = __br_fdb_get(br, br->dev->dev_addr, vid);
263 if (f && f->is_local && !f->dst)
264 fdb_delete_local(br, NULL, f);
265 fdb_insert(br, NULL, newaddr, vid);
268 spin_unlock_bh(&br->hash_lock);
271 void br_fdb_cleanup(unsigned long _data)
273 struct net_bridge *br = (struct net_bridge *)_data;
274 unsigned long delay = hold_time(br);
275 unsigned long next_timer = jiffies + br->ageing_time;
278 spin_lock(&br->hash_lock);
279 for (i = 0; i < BR_HASH_SIZE; i++) {
280 struct net_bridge_fdb_entry *f;
281 struct hlist_node *n;
283 hlist_for_each_entry_safe(f, n, &br->hash[i], hlist) {
284 unsigned long this_timer;
287 this_timer = f->updated + delay;
288 if (time_before_eq(this_timer, jiffies))
290 else if (time_before(this_timer, next_timer))
291 next_timer = this_timer;
294 spin_unlock(&br->hash_lock);
296 mod_timer(&br->gc_timer, round_jiffies_up(next_timer));
299 /* Completely flush all dynamic entries in forwarding database.*/
300 void br_fdb_flush(struct net_bridge *br)
304 spin_lock_bh(&br->hash_lock);
305 for (i = 0; i < BR_HASH_SIZE; i++) {
306 struct net_bridge_fdb_entry *f;
307 struct hlist_node *n;
308 hlist_for_each_entry_safe(f, n, &br->hash[i], hlist) {
313 spin_unlock_bh(&br->hash_lock);
316 /* Flush all entries referring to a specific port.
317 * if do_all is set also flush static entries
319 void br_fdb_delete_by_port(struct net_bridge *br,
320 const struct net_bridge_port *p,
325 spin_lock_bh(&br->hash_lock);
326 for (i = 0; i < BR_HASH_SIZE; i++) {
327 struct hlist_node *h, *g;
329 hlist_for_each_safe(h, g, &br->hash[i]) {
330 struct net_bridge_fdb_entry *f
331 = hlist_entry(h, struct net_bridge_fdb_entry, hlist);
335 if (f->is_static && !do_all)
339 fdb_delete_local(br, p, f);
344 spin_unlock_bh(&br->hash_lock);
347 /* No locking or refcounting, assumes caller has rcu_read_lock */
348 struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
349 const unsigned char *addr,
352 struct net_bridge_fdb_entry *fdb;
354 hlist_for_each_entry_rcu(fdb,
355 &br->hash[br_mac_hash(addr, vid)], hlist) {
356 if (ether_addr_equal(fdb->addr.addr, addr) &&
357 fdb->vlan_id == vid) {
358 if (unlikely(has_expired(br, fdb)))
367 #if IS_ENABLED(CONFIG_ATM_LANE)
368 /* Interface used by ATM LANE hook to test
369 * if an addr is on some other bridge port */
370 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr)
372 struct net_bridge_fdb_entry *fdb;
373 struct net_bridge_port *port;
377 port = br_port_get_rcu(dev);
381 fdb = __br_fdb_get(port->br, addr, 0);
382 ret = fdb && fdb->dst && fdb->dst->dev != dev &&
383 fdb->dst->state == BR_STATE_FORWARDING;
389 #endif /* CONFIG_ATM_LANE */
392 * Fill buffer with forwarding table records in
395 int br_fdb_fillbuf(struct net_bridge *br, void *buf,
396 unsigned long maxnum, unsigned long skip)
398 struct __fdb_entry *fe = buf;
400 struct net_bridge_fdb_entry *f;
402 memset(buf, 0, maxnum*sizeof(struct __fdb_entry));
405 for (i = 0; i < BR_HASH_SIZE; i++) {
406 hlist_for_each_entry_rcu(f, &br->hash[i], hlist) {
410 if (has_expired(br, f))
413 /* ignore pseudo entry for local MAC address */
422 /* convert from internal format to API */
423 memcpy(fe->mac_addr, f->addr.addr, ETH_ALEN);
425 /* due to ABI compat need to split into hi/lo */
426 fe->port_no = f->dst->port_no;
427 fe->port_hi = f->dst->port_no >> 8;
429 fe->is_local = f->is_local;
431 fe->ageing_timer_value = jiffies_delta_to_clock_t(jiffies - f->updated);
443 static struct net_bridge_fdb_entry *fdb_find(struct hlist_head *head,
444 const unsigned char *addr,
447 struct net_bridge_fdb_entry *fdb;
449 hlist_for_each_entry(fdb, head, hlist) {
450 if (ether_addr_equal(fdb->addr.addr, addr) &&
457 static struct net_bridge_fdb_entry *fdb_find_rcu(struct hlist_head *head,
458 const unsigned char *addr,
461 struct net_bridge_fdb_entry *fdb;
463 hlist_for_each_entry_rcu(fdb, head, hlist) {
464 if (ether_addr_equal(fdb->addr.addr, addr) &&
471 static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head,
472 struct net_bridge_port *source,
473 const unsigned char *addr,
476 struct net_bridge_fdb_entry *fdb;
478 fdb = kmem_cache_alloc(br_fdb_cache, GFP_ATOMIC);
480 memcpy(fdb->addr.addr, addr, ETH_ALEN);
485 fdb->added_by_user = 0;
486 fdb->updated = fdb->used = jiffies;
487 hlist_add_head_rcu(&fdb->hlist, head);
492 static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
493 const unsigned char *addr, u16 vid)
495 struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
496 struct net_bridge_fdb_entry *fdb;
498 if (!is_valid_ether_addr(addr))
501 fdb = fdb_find(head, addr, vid);
503 /* it is okay to have multiple ports with same
504 * address, just use the first one.
508 br_warn(br, "adding interface %s with same address "
509 "as a received packet\n",
510 source ? source->dev->name : br->dev->name);
514 fdb = fdb_create(head, source, addr, vid);
518 fdb->is_local = fdb->is_static = 1;
519 fdb_add_hw(br, addr);
520 fdb_notify(br, fdb, RTM_NEWNEIGH);
524 /* Add entry for local address of interface */
525 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
526 const unsigned char *addr, u16 vid)
530 spin_lock_bh(&br->hash_lock);
531 ret = fdb_insert(br, source, addr, vid);
532 spin_unlock_bh(&br->hash_lock);
536 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
537 const unsigned char *addr, u16 vid, bool added_by_user)
539 struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
540 struct net_bridge_fdb_entry *fdb;
541 bool fdb_modified = false;
543 /* some users want to always flood. */
544 if (hold_time(br) == 0)
547 /* ignore packets unless we are using this port */
548 if (!(source->state == BR_STATE_LEARNING ||
549 source->state == BR_STATE_FORWARDING))
552 fdb = fdb_find_rcu(head, addr, vid);
554 /* attempt to update an entry for a local interface */
555 if (unlikely(fdb->is_local)) {
557 br_warn(br, "received packet on %s with "
558 "own address as source address\n",
561 /* fastpath: update of existing entry */
562 if (unlikely(source != fdb->dst)) {
566 fdb->updated = jiffies;
567 if (unlikely(added_by_user))
568 fdb->added_by_user = 1;
569 if (unlikely(fdb_modified))
570 fdb_notify(br, fdb, RTM_NEWNEIGH);
573 spin_lock(&br->hash_lock);
574 if (likely(!fdb_find(head, addr, vid))) {
575 fdb = fdb_create(head, source, addr, vid);
577 if (unlikely(added_by_user))
578 fdb->added_by_user = 1;
579 fdb_notify(br, fdb, RTM_NEWNEIGH);
582 /* else we lose race and someone else inserts
583 * it first, don't bother updating
585 spin_unlock(&br->hash_lock);
589 static int fdb_to_nud(const struct net_bridge_fdb_entry *fdb)
592 return NUD_PERMANENT;
593 else if (fdb->is_static)
595 else if (has_expired(fdb->dst->br, fdb))
598 return NUD_REACHABLE;
601 static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
602 const struct net_bridge_fdb_entry *fdb,
603 u32 portid, u32 seq, int type, unsigned int flags)
605 unsigned long now = jiffies;
606 struct nda_cacheinfo ci;
607 struct nlmsghdr *nlh;
610 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
614 ndm = nlmsg_data(nlh);
615 ndm->ndm_family = AF_BRIDGE;
620 ndm->ndm_ifindex = fdb->dst ? fdb->dst->dev->ifindex : br->dev->ifindex;
621 ndm->ndm_state = fdb_to_nud(fdb);
623 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->addr))
624 goto nla_put_failure;
625 if (nla_put_u32(skb, NDA_MASTER, br->dev->ifindex))
626 goto nla_put_failure;
627 ci.ndm_used = jiffies_to_clock_t(now - fdb->used);
628 ci.ndm_confirmed = 0;
629 ci.ndm_updated = jiffies_to_clock_t(now - fdb->updated);
631 if (nla_put(skb, NDA_CACHEINFO, sizeof(ci), &ci))
632 goto nla_put_failure;
634 if (nla_put(skb, NDA_VLAN, sizeof(u16), &fdb->vlan_id))
635 goto nla_put_failure;
637 return nlmsg_end(skb, nlh);
640 nlmsg_cancel(skb, nlh);
644 static inline size_t fdb_nlmsg_size(void)
646 return NLMSG_ALIGN(sizeof(struct ndmsg))
647 + nla_total_size(ETH_ALEN) /* NDA_LLADDR */
648 + nla_total_size(sizeof(u32)) /* NDA_MASTER */
649 + nla_total_size(sizeof(u16)) /* NDA_VLAN */
650 + nla_total_size(sizeof(struct nda_cacheinfo));
653 static void fdb_notify(struct net_bridge *br,
654 const struct net_bridge_fdb_entry *fdb, int type)
656 struct net *net = dev_net(br->dev);
660 skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
664 err = fdb_fill_info(skb, br, fdb, 0, 0, type, 0);
666 /* -EMSGSIZE implies BUG in fdb_nlmsg_size() */
667 WARN_ON(err == -EMSGSIZE);
671 rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
674 rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
677 /* Dump information about entries, in response to GETNEIGH */
678 int br_fdb_dump(struct sk_buff *skb,
679 struct netlink_callback *cb,
680 struct net_device *dev,
683 struct net_bridge *br = netdev_priv(dev);
686 if (!(dev->priv_flags & IFF_EBRIDGE))
689 for (i = 0; i < BR_HASH_SIZE; i++) {
690 struct net_bridge_fdb_entry *f;
692 hlist_for_each_entry_rcu(f, &br->hash[i], hlist) {
693 if (idx < cb->args[0])
696 if (fdb_fill_info(skb, br, f,
697 NETLINK_CB(cb->skb).portid,
711 /* Update (create or replace) forwarding database entry */
712 static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
713 __u16 state, __u16 flags, __u16 vid)
715 struct net_bridge *br = source->br;
716 struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
717 struct net_bridge_fdb_entry *fdb;
718 bool modified = false;
720 fdb = fdb_find(head, addr, vid);
722 if (!(flags & NLM_F_CREATE))
725 fdb = fdb_create(head, source, addr, vid);
731 if (flags & NLM_F_EXCL)
734 if (fdb->dst != source) {
740 if (fdb_to_nud(fdb) != state) {
741 if (state & NUD_PERMANENT) {
743 if (!fdb->is_static) {
745 fdb_add_hw(br, addr);
747 } else if (state & NUD_NOARP) {
749 if (!fdb->is_static) {
751 fdb_add_hw(br, addr);
755 if (fdb->is_static) {
757 fdb_del_hw(br, addr);
763 fdb->added_by_user = 1;
767 fdb->updated = jiffies;
768 fdb_notify(br, fdb, RTM_NEWNEIGH);
774 static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge_port *p,
775 const unsigned char *addr, u16 nlh_flags, u16 vid)
779 if (ndm->ndm_flags & NTF_USE) {
781 br_fdb_update(p->br, p, addr, vid, true);
784 spin_lock_bh(&p->br->hash_lock);
785 err = fdb_add_entry(p, addr, ndm->ndm_state,
787 spin_unlock_bh(&p->br->hash_lock);
793 /* Add new permanent fdb entry with RTM_NEWNEIGH */
794 int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
795 struct net_device *dev,
796 const unsigned char *addr, u16 nlh_flags)
798 struct net_bridge_port *p;
800 struct net_port_vlans *pv;
801 unsigned short vid = VLAN_N_VID;
803 if (!(ndm->ndm_state & (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE))) {
804 pr_info("bridge: RTM_NEWNEIGH with invalid state %#x\n", ndm->ndm_state);
809 if (nla_len(tb[NDA_VLAN]) != sizeof(unsigned short)) {
810 pr_info("bridge: RTM_NEWNEIGH with invalid vlan\n");
814 vid = nla_get_u16(tb[NDA_VLAN]);
816 if (!vid || vid >= VLAN_VID_MASK) {
817 pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n",
823 if (is_zero_ether_addr(addr)) {
824 pr_info("bridge: RTM_NEWNEIGH with invalid ether address\n");
828 p = br_port_get_rtnl(dev);
830 pr_info("bridge: RTM_NEWNEIGH %s not a bridge port\n",
835 pv = nbp_get_vlan_info(p);
836 if (vid != VLAN_N_VID) {
837 if (!pv || !test_bit(vid, pv->vlan_bitmap)) {
838 pr_info("bridge: RTM_NEWNEIGH with unconfigured "
839 "vlan %d on port %s\n", vid, dev->name);
843 /* VID was specified, so use it. */
844 err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
846 if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) {
847 err = __br_fdb_add(ndm, p, addr, nlh_flags, 0);
851 /* We have vlans configured on this port and user didn't
852 * specify a VLAN. To be nice, add/update entry for every
855 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
856 err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
866 static int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vlan)
868 struct hlist_head *head = &br->hash[br_mac_hash(addr, vlan)];
869 struct net_bridge_fdb_entry *fdb;
871 fdb = fdb_find(head, addr, vlan);
879 static int __br_fdb_delete(struct net_bridge_port *p,
880 const unsigned char *addr, u16 vid)
884 spin_lock_bh(&p->br->hash_lock);
885 err = fdb_delete_by_addr(p->br, addr, vid);
886 spin_unlock_bh(&p->br->hash_lock);
891 /* Remove neighbor entry with RTM_DELNEIGH */
892 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
893 struct net_device *dev,
894 const unsigned char *addr)
896 struct net_bridge_port *p;
898 struct net_port_vlans *pv;
899 unsigned short vid = VLAN_N_VID;
902 if (nla_len(tb[NDA_VLAN]) != sizeof(unsigned short)) {
903 pr_info("bridge: RTM_NEWNEIGH with invalid vlan\n");
907 vid = nla_get_u16(tb[NDA_VLAN]);
909 if (!vid || vid >= VLAN_VID_MASK) {
910 pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n",
915 p = br_port_get_rtnl(dev);
917 pr_info("bridge: RTM_DELNEIGH %s not a bridge port\n",
922 pv = nbp_get_vlan_info(p);
923 if (vid != VLAN_N_VID) {
924 if (!pv || !test_bit(vid, pv->vlan_bitmap)) {
925 pr_info("bridge: RTM_DELNEIGH with unconfigured "
926 "vlan %d on port %s\n", vid, dev->name);
930 err = __br_fdb_delete(p, addr, vid);
932 if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) {
933 err = __br_fdb_delete(p, addr, 0);
937 /* We have vlans configured on this port and user didn't
938 * specify a VLAN. To be nice, add/update entry for every
942 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
943 err &= __br_fdb_delete(p, addr, vid);
950 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p)
952 struct net_bridge_fdb_entry *fdb, *tmp;
958 for (i = 0; i < BR_HASH_SIZE; i++) {
959 hlist_for_each_entry(fdb, &br->hash[i], hlist) {
960 /* We only care for static entries */
964 err = dev_uc_add(p->dev, fdb->addr.addr);
972 for (i = 0; i < BR_HASH_SIZE; i++) {
973 hlist_for_each_entry(tmp, &br->hash[i], hlist) {
974 /* If we reached the fdb that failed, we can stop */
978 /* We only care for static entries */
982 dev_uc_del(p->dev, tmp->addr.addr);
988 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
990 struct net_bridge_fdb_entry *fdb;
995 for (i = 0; i < BR_HASH_SIZE; i++) {
996 hlist_for_each_entry_rcu(fdb, &br->hash[i], hlist) {
997 /* We only care for static entries */
1001 dev_uc_del(p->dev, fdb->addr.addr);