[PATCH v3 net-next 1/7] net: bridge: move br_fdb_replay inside br_switchdev.c

[Vladimir Oltean <vladimir.oltean@nxp.com>]

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 <vladimir.oltean@nxp.com>
---
v2->v3: patch is new

 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 46812b659710..c6e51701bc37 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -732,60 +732,6 @@ static inline size_t fdb_nlmsg_size(void)
 		+ nla_total_size(sizeof(u8)); /* NFEA_ACTIVITY_NOTIFY */
 }
 
-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;
-}
-
 static void fdb_notify(struct net_bridge *br,
 		       const struct net_bridge_fdb_entry *fdb, int type,
 		       bool swdev_notify)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 21b292eb2b3e..390c807d1c7c 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -778,8 +778,6 @@ 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,
-- 
2.25.1