Patch "net: dsa: Move VLAN filtering syncing out of dsa_switch_bridge_leave" has been added to the 5.17-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    net: dsa: Move VLAN filtering syncing out of dsa_switch_bridge_leave

to the 5.17-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-dsa-move-vlan-filtering-syncing-out-of-dsa_switc.patch
and it can be found in the queue-5.17 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 15e50eb645aa437d0c5d6b407cbc568979d638c0
Author: Tobias Waldekranz <tobias@xxxxxxxxxxxxxx>
Date:   Mon Jan 24 22:09:43 2022 +0100

    net: dsa: Move VLAN filtering syncing out of dsa_switch_bridge_leave
    
    [ Upstream commit 381a730182f1d174e1950cd4e63e885b1c302051 ]
    
    Most of dsa_switch_bridge_leave was, in fact, dealing with the syncing
    of VLAN filtering for switches on which that is a global
    setting. Separate the two phases to prepare for the cross-chip related
    bugfix in the following commit.
    
    Signed-off-by: Tobias Waldekranz <tobias@xxxxxxxxxxxxxx>
    Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index e3c7d2627a61..9f9b70d6070a 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -113,26 +113,15 @@ static int dsa_switch_bridge_join(struct dsa_switch *ds,
 	return dsa_tag_8021q_bridge_join(ds, info);
 }
 
-static int dsa_switch_bridge_leave(struct dsa_switch *ds,
-				   struct dsa_notifier_bridge_info *info)
+static int dsa_switch_sync_vlan_filtering(struct dsa_switch *ds,
+					  struct dsa_notifier_bridge_info *info)
 {
-	struct dsa_switch_tree *dst = ds->dst;
 	struct netlink_ext_ack extack = {0};
 	bool change_vlan_filtering = false;
 	bool vlan_filtering;
 	struct dsa_port *dp;
 	int err;
 
-	if (dst->index == info->tree_index && ds->index == info->sw_index &&
-	    ds->ops->port_bridge_leave)
-		ds->ops->port_bridge_leave(ds, info->port, info->bridge);
-
-	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
-	    ds->ops->crosschip_bridge_leave)
-		ds->ops->crosschip_bridge_leave(ds, info->tree_index,
-						info->sw_index, info->port,
-						info->bridge);
-
 	if (ds->needs_standalone_vlan_filtering &&
 	    !br_vlan_enabled(info->bridge.dev)) {
 		change_vlan_filtering = true;
@@ -172,6 +161,29 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
 			return err;
 	}
 
+	return 0;
+}
+
+static int dsa_switch_bridge_leave(struct dsa_switch *ds,
+				   struct dsa_notifier_bridge_info *info)
+{
+	struct dsa_switch_tree *dst = ds->dst;
+	int err;
+
+	if (dst->index == info->tree_index && ds->index == info->sw_index &&
+	    ds->ops->port_bridge_leave)
+		ds->ops->port_bridge_leave(ds, info->port, info->bridge);
+
+	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
+	    ds->ops->crosschip_bridge_leave)
+		ds->ops->crosschip_bridge_leave(ds, info->tree_index,
+						info->sw_index, info->port,
+						info->bridge);
+
+	err = dsa_switch_sync_vlan_filtering(ds, info);
+	if (err)
+		return err;
+
 	return dsa_tag_8021q_bridge_leave(ds, info);
 }