[RFC PATCH v2 net-next 05/16] net: dsa: sync up VLAN filtering state when joining the bridge

[Vladimir Oltean]

From: Vladimir Oltean <vladimir.olt...@nxp.com>

This is the same situation as for other switchdev port attributes: if we
join an already-created bridge port, such as a bond master interface,
then we can miss the initial switchdev notification emitted by the
bridge for this port.

Signed-off-by: Vladimir Oltean <vladimir.olt...@nxp.com>
---
 net/dsa/port.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/dsa/port.c b/net/dsa/port.c
index 785374744462..ac1afe182c3b 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -172,6 +172,7 @@ static int dsa_port_switchdev_sync(struct dsa_port *dp,
                                   struct netlink_ext_ack *extack)
 {
        struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
+       struct net_device *br = dp->bridge_dev;
        u8 stp_state;
        int err;
 
@@ -184,6 +185,10 @@ static int dsa_port_switchdev_sync(struct dsa_port *dp,
        if (err && err != -EOPNOTSUPP)
                return err;
 
+       err = dsa_port_vlan_filtering(dp, br, extack);
+       if (err && err != -EOPNOTSUPP)
+               return err;
+
        return 0;
 }
 
@@ -205,6 +210,8 @@ static void dsa_port_switchdev_unsync(struct dsa_port *dp)
         * so allow it to be in BR_STATE_FORWARDING to be kept functional
         */
        dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
+
+       /* VLAN filtering is handled by dsa_switch_bridge_leave */
 }
 
 int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
-- 
2.25.1