net: dsa: lan9303: add VLAN IDs to master device

If the master device does VLAN filtering, the IDs used by the switch
must be added for any frames to be received.  Do this in the
port_enable() function, and remove them in port_disable().

Signed-off-by: Mans Rullgard <mans@mansr.com>

drivers/net/dsa/lan9303-core.c

@@ -1084,20 +1084,32 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
 			       struct phy_device *phy)
 {
 	struct lan9303 *chip = ds->priv;
+	struct dsa_port *cpu_dp;
 
 	if (!dsa_is_user_port(ds, port))
 		return 0;
 
+	dsa_switch_for_each_cpu_port(cpu_dp, ds)
+		break;
+
+	vlan_vid_add(cpu_dp->master, htons(ETH_P_8021Q), port);
+
 	return lan9303_enable_processing_port(chip, port);
 }
 
 static void lan9303_port_disable(struct dsa_switch *ds, int port)
 {
 	struct lan9303 *chip = ds->priv;
+	struct dsa_port *cpu_dp;
 
 	if (!dsa_is_user_port(ds, port))
 		return;
 
+	dsa_switch_for_each_cpu_port(cpu_dp, ds)
+		break;
+
+	vlan_vid_del(cpu_dp->master, htons(ETH_P_8021Q), port);
+
 	lan9303_disable_processing_port(chip, port);
 	lan9303_phy_write(ds, chip->phy_addr_base + port, MII_BMCR, BMCR_PDOWN);
 }