From 5cda5272a4605c34740859378bf7a7940229feca Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Tue, 26 Oct 2021 17:27:41 +0300 Subject: [PATCH] net: bridge: move br_fdb_replay inside br_switchdev.c br_fdb_replay is only called from switchdev code paths, so it makes sense to be disabled if switchdev is not enabled in the first place. As opposed to br_mdb_replay and br_vlan_replay which might be turned off depending on bridge support for multicast and VLANs, FDB support is always on. So moving br_mdb_replay and br_vlan_replay inside br_switchdev.c would mean adding some #ifdef's in br_switchdev.c, so we keep those where they are. The reason for the movement is that in future changes there will be some code reuse between br_switchdev_fdb_notify and br_fdb_replay. Signed-off-by: Vladimir Oltean Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller --- net/bridge/br_fdb.c | 54 ----------------------------------------------- net/bridge/br_private.h | 2 -- net/bridge/br_switchdev.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 54 insertions(+), 56 deletions(-) diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index f2b909aedabf..6ccda68bd473 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -759,60 +759,6 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, } } -static int br_fdb_replay_one(struct net_bridge *br, struct notifier_block *nb, - const struct net_bridge_fdb_entry *fdb, - unsigned long action, const void *ctx) -{ - const struct net_bridge_port *p = READ_ONCE(fdb->dst); - struct switchdev_notifier_fdb_info item; - int err; - - item.addr = fdb->key.addr.addr; - item.vid = fdb->key.vlan_id; - item.added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags); - item.offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags); - item.is_local = test_bit(BR_FDB_LOCAL, &fdb->flags); - item.info.dev = (!p || item.is_local) ? br->dev : p->dev; - item.info.ctx = ctx; - - err = nb->notifier_call(nb, action, &item); - return notifier_to_errno(err); -} - -int br_fdb_replay(const struct net_device *br_dev, const void *ctx, bool adding, - struct notifier_block *nb) -{ - struct net_bridge_fdb_entry *fdb; - struct net_bridge *br; - unsigned long action; - int err = 0; - - if (!nb) - return 0; - - if (!netif_is_bridge_master(br_dev)) - return -EINVAL; - - br = netdev_priv(br_dev); - - if (adding) - action = SWITCHDEV_FDB_ADD_TO_DEVICE; - else - action = SWITCHDEV_FDB_DEL_TO_DEVICE; - - rcu_read_lock(); - - hlist_for_each_entry_rcu(fdb, &br->fdb_list, fdb_node) { - err = br_fdb_replay_one(br, nb, fdb, action, ctx); - if (err) - break; - } - - rcu_read_unlock(); - - return err; -} - /* Dump information about entries, in response to GETNEIGH */ int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 705606fc2237..3c9327628060 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -792,8 +792,6 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, bool swdev_notify); void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid, bool offloaded); -int br_fdb_replay(const struct net_device *br_dev, const void *ctx, bool adding, - struct notifier_block *nb); /* br_forward.c */ enum br_pkt_type { diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index 6bf518d78f02..8a45b1cfe06f 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -270,6 +270,60 @@ static void nbp_switchdev_del(struct net_bridge_port *p) } } +static int br_fdb_replay_one(struct net_bridge *br, struct notifier_block *nb, + const struct net_bridge_fdb_entry *fdb, + unsigned long action, const void *ctx) +{ + const struct net_bridge_port *p = READ_ONCE(fdb->dst); + struct switchdev_notifier_fdb_info item; + int err; + + item.addr = fdb->key.addr.addr; + item.vid = fdb->key.vlan_id; + item.added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags); + item.offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags); + item.is_local = test_bit(BR_FDB_LOCAL, &fdb->flags); + item.info.dev = (!p || item.is_local) ? br->dev : p->dev; + item.info.ctx = ctx; + + err = nb->notifier_call(nb, action, &item); + return notifier_to_errno(err); +} + +static int br_fdb_replay(const struct net_device *br_dev, const void *ctx, + bool adding, struct notifier_block *nb) +{ + struct net_bridge_fdb_entry *fdb; + struct net_bridge *br; + unsigned long action; + int err = 0; + + if (!nb) + return 0; + + if (!netif_is_bridge_master(br_dev)) + return -EINVAL; + + br = netdev_priv(br_dev); + + if (adding) + action = SWITCHDEV_FDB_ADD_TO_DEVICE; + else + action = SWITCHDEV_FDB_DEL_TO_DEVICE; + + rcu_read_lock(); + + hlist_for_each_entry_rcu(fdb, &br->fdb_list, fdb_node) { + err = br_fdb_replay_one(br, nb, fdb, action, ctx); + if (err) + break; + } + + rcu_read_unlock(); + + return err; +} + static int nbp_switchdev_sync_objs(struct net_bridge_port *p, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, -- 2.11.0