diff options
Diffstat (limited to 'net/bridge/br_fdb.c')
-rw-r--r-- | net/bridge/br_fdb.c | 61 |
1 files changed, 46 insertions, 15 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 4b75ad43aa85..8117900af4de 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -28,7 +28,7 @@ static struct kmem_cache *br_fdb_cache __read_mostly; static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, - const unsigned char *addr); + const unsigned char *addr, u16 vid); static void fdb_notify(struct net_bridge *br, const struct net_bridge_fdb_entry *, int); @@ -92,6 +92,7 @@ static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f) void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr) { struct net_bridge *br = p->br; + bool no_vlan = (nbp_get_vlan_info(p) == NULL) ? true : false; int i; spin_lock_bh(&br->hash_lock); @@ -106,10 +107,12 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr) if (f->dst == p && f->is_local) { /* maybe another port has same hw addr? */ struct net_bridge_port *op; + u16 vid = f->vlan_id; list_for_each_entry(op, &br->port_list, list) { if (op != p && ether_addr_equal(op->dev->dev_addr, - f->addr.addr)) { + f->addr.addr) && + nbp_vlan_find(op, vid)) { f->dst = op; goto insert; } @@ -117,27 +120,55 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr) /* delete old one */ fdb_delete(br, f); - goto insert; +insert: + /* insert new address, may fail if invalid + * address or dup. + */ + fdb_insert(br, p, newaddr, vid); + + /* if this port has no vlan information + * configured, we can safely be done at + * this point. + */ + if (no_vlan) + goto done; } } } - insert: - /* insert new address, may fail if invalid address or dup. */ - fdb_insert(br, p, newaddr); +done: spin_unlock_bh(&br->hash_lock); } void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr) { struct net_bridge_fdb_entry *f; + struct net_port_vlans *pv; + u16 vid = 0; /* If old entry was unassociated with any port, then delete it. */ f = __br_fdb_get(br, br->dev->dev_addr, 0); if (f && f->is_local && !f->dst) fdb_delete(br, f); - fdb_insert(br, NULL, newaddr); + fdb_insert(br, NULL, newaddr, 0); + + /* Now remove and add entries for every VLAN configured on the + * bridge. This function runs under RTNL so the bitmap will not + * change from under us. + */ + pv = br_get_vlan_info(br); + if (!pv) + return; + + for (vid = find_next_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN, vid); + vid < BR_VLAN_BITMAP_LEN; + vid = find_next_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN, vid+1)) { + f = __br_fdb_get(br, br->dev->dev_addr, vid); + if (f && f->is_local && !f->dst) + fdb_delete(br, f); + fdb_insert(br, NULL, newaddr, vid); + } } void br_fdb_cleanup(unsigned long _data) @@ -379,15 +410,15 @@ static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head, } static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, - const unsigned char *addr) + const unsigned char *addr, u16 vid) { - struct hlist_head *head = &br->hash[br_mac_hash(addr, 0)]; + struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)]; struct net_bridge_fdb_entry *fdb; if (!is_valid_ether_addr(addr)) return -EINVAL; - fdb = fdb_find(head, addr, 0); + fdb = fdb_find(head, addr, vid); if (fdb) { /* it is okay to have multiple ports with same * address, just use the first one. @@ -400,7 +431,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, fdb_delete(br, fdb); } - fdb = fdb_create(head, source, addr, 0); + fdb = fdb_create(head, source, addr, vid); if (!fdb) return -ENOMEM; @@ -411,12 +442,12 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, /* Add entry for local address of interface */ int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, - const unsigned char *addr) + const unsigned char *addr, u16 vid) { int ret; spin_lock_bh(&br->hash_lock); - ret = fdb_insert(br, source, addr); + ret = fdb_insert(br, source, addr, vid); spin_unlock_bh(&br->hash_lock); return ret; } @@ -712,8 +743,8 @@ out: return err; } -static int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, - u16 vlan) +int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, + u16 vlan) { struct hlist_head *head = &br->hash[br_mac_hash(addr, vlan)]; struct net_bridge_fdb_entry *fdb; |