Deleting a port-VLAN currently takes the hash_lock twice and performs two fdb ops. The first removes its automatically generated local entry and the second deletes dynamic entries associated with the port and vid. Rename br_fdb_delete_by_port() to br_fdb_cleanup_by_dst() and pass a bridge dst so it can distinguish a port-VLAN from a raw port. This allows both operations to be done during the same locked fdb walk.
Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: Nikolay Aleksandrov <[email protected]> --- net/bridge/br.c | 2 +- net/bridge/br_fdb.c | 17 +++++++++++++---- net/bridge/br_if.c | 6 +++--- net/bridge/br_netlink.c | 2 +- net/bridge/br_private.h | 4 ++-- net/bridge/br_stp_if.c | 2 +- net/bridge/br_sysfs_if.c | 3 ++- net/bridge/br_vlan.c | 5 ++--- 8 files changed, 25 insertions(+), 16 deletions(-) diff --git a/net/bridge/br.c b/net/bridge/br.c index 09a120b3b76c..b1abe1c5bbdd 100644 --- a/net/bridge/br.c +++ b/net/bridge/br.c @@ -202,7 +202,7 @@ static int br_switchdev_event(struct notifier_block *unused, case SWITCHDEV_FDB_FLUSH_TO_BRIDGE: fdb_info = ptr; /* Don't delete static entries */ - br_fdb_delete_by_port(br, p, fdb_info->vid, 0); + br_fdb_cleanup_by_dst(br, br_port_to_dst(p), fdb_info->vid, 0); break; } diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 9cd6deae8635..7c68b540b358 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -868,15 +868,16 @@ int br_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev, return 0; } -/* Flush all entries referring to a specific port. +/* Clean up all entries referring to a specific destination. * if do_all is set also flush static entries * if vid is set delete all entries that match the vlan_id */ -void br_fdb_delete_by_port(struct net_bridge *br, - const struct net_bridge_port *p, - u16 vid, +void br_fdb_cleanup_by_dst(struct net_bridge *br, + struct net_bridge_dst cleanup_dst, u16 vid, int do_all) { + const struct net_bridge_vlan *vlan = br_dst_vlan(cleanup_dst); + const struct net_bridge_port *p = br_dst_port(cleanup_dst); struct net_bridge_fdb_entry *f; struct hlist_node *tmp; @@ -885,6 +886,14 @@ void br_fdb_delete_by_port(struct net_bridge *br, if (br_fdb_dst_port(f) != p) continue; + if (vlan && f->key.vlan_id == vlan->vid && + test_bit(BR_FDB_LOCAL, &f->flags) && + !test_bit(BR_FDB_ADDED_BY_USER, &f->flags) && + ether_addr_equal(f->key.addr.addr, p->dev->dev_addr)) { + fdb_delete_local(br, p, f); + continue; + } + if (!do_all) if (test_bit(BR_FDB_STATIC, &f->flags) || (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &f->flags) && diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index c52613431f88..d94558a5e3e9 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -355,7 +355,7 @@ static void del_nbp(struct net_bridge_port *p) netdev_reset_rx_headroom(dev); nbp_vlan_flush(p); - br_fdb_delete_by_port(br, p, 0, 1); + br_fdb_cleanup_by_dst(br, br_port_to_dst(p), 0, 1); switchdev_deferred_process(); nbp_backup_clear(p); @@ -390,7 +390,7 @@ void br_dev_delete(struct net_device *dev, struct list_head *head) br_mst_uninit(br); br_recalculate_neigh_suppress_enabled(br); - br_fdb_delete_by_port(br, NULL, 0, 1); + br_fdb_cleanup_by_dst(br, br_port_to_dst(NULL), 0, 1); timer_shutdown_sync(&br->hello_timer); timer_shutdown_sync(&br->topology_change_timer); @@ -696,7 +696,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev, if (fdb_synced) br_fdb_unsync_static(br, p); list_del_rcu(&p->list); - br_fdb_delete_by_port(br, p, 0, 1); + br_fdb_cleanup_by_dst(br, br_port_to_dst(p), 0, 1); nbp_update_port_count(br); netdev_upper_dev_unlink(dev, br->dev); err5: diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index ae76df0de05a..f65b8b6ca97c 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -1044,7 +1044,7 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[], } if (tb[IFLA_BRPORT_FLUSH]) - br_fdb_delete_by_port(p->br, p, 0, 0); + br_fdb_cleanup_by_dst(p->br, br_port_to_dst(p), 0, 0); #ifdef CONFIG_BRIDGE_IGMP_SNOOPING if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) { diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 058cc082311a..a790368b69e9 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -983,8 +983,8 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); void br_fdb_cleanup(struct work_struct *work); int br_fdb_toggle_local_vlan_0(struct net_bridge *br, bool on, struct netlink_ext_ack *extack); -void br_fdb_delete_by_port(struct net_bridge *br, - const struct net_bridge_port *p, u16 vid, int do_all); +void br_fdb_cleanup_by_dst(struct net_bridge *br, + struct net_bridge_dst dst, u16 vid, int do_all); struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, const unsigned char *addr, __u16 vid); diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c index a7e5422eb5d1..2e5190278c90 100644 --- a/net/bridge/br_stp_if.c +++ b/net/bridge/br_stp_if.c @@ -114,7 +114,7 @@ void br_stp_disable_port(struct net_bridge_port *p) timer_delete(&p->hold_timer); if (!rcu_access_pointer(p->backup_port)) - br_fdb_delete_by_port(br, p, 0, 0); + br_fdb_cleanup_by_dst(br, br_port_to_dst(p), 0, 0); br_multicast_disable_port(p); br_configuration_update(br); diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c index b9bcafa7f034..621d62a063d9 100644 --- a/net/bridge/br_sysfs_if.c +++ b/net/bridge/br_sysfs_if.c @@ -191,7 +191,8 @@ static BRPORT_ATTR(hold_timer, 0444, show_hold_timer, NULL); static int store_flush(struct net_bridge_port *p, unsigned long v) { - br_fdb_delete_by_port(p->br, p, 0, 0); // Don't delete local entry + /* Don't delete local entry */ + br_fdb_cleanup_by_dst(p->br, br_port_to_dst(p), 0, 0); return 0; } static BRPORT_ATTR(flush, 0200, NULL, store_flush); diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 471b4e7f0571..7ba6e57b18fa 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -870,7 +870,7 @@ int br_vlan_delete(struct net_bridge *br, u16 vid) return -ENOENT; br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); - br_fdb_delete_by_port(br, NULL, vid, 0); + br_fdb_cleanup_by_dst(br, br_port_to_dst(NULL), vid, 0); vlan_tunnel_info_del(vg, v); __vlan_del(v); @@ -1396,8 +1396,7 @@ int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) v = br_vlan_find(nbp_vlan_group(port), vid); if (!v) return -ENOENT; - br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); - br_fdb_delete_by_port(port->br, port, vid, 0); + br_fdb_cleanup_by_dst(port->br, br_vlan_to_dst(v), vid, 0); __vlan_del(v); return 0; -- 2.47.3
