networkd: add support for setting vlan_tunnel on bridge ports

src/network/networkd-network-gperf.gperf

@@ -386,6 +386,7 @@ Bridge.Priority,                             config_parse_bridge_port_priority,
 Bridge.MulticastRouter,                      config_parse_multicast_router,                            0,                             offsetof(Network, multicast_router)
 Bridge.Locked,                               config_parse_tristate,                                    0,                             offsetof(Network, bridge_locked)
 Bridge.MACAuthenticationBypass,              config_parse_tristate,                                    0,                             offsetof(Network, bridge_mac_authentication_bypass)
+Bridge.VLANTunnel,                           config_parse_tristate,                                    0,                             offsetof(Network, bridge_vlan_tunnel)
 BridgeFDB.MACAddress,                        config_parse_fdb_hwaddr,                                  0,                             0
 BridgeFDB.VLANId,                            config_parse_fdb_vlan_id,                                 0,                             0
 BridgeFDB.Destination,                       config_parse_fdb_destination,                             0,                             0

src/network/networkd-network.c

@@ -458,6 +458,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
                 .multicast_router = _MULTICAST_ROUTER_INVALID,
                 .bridge_locked = -1,
                 .bridge_mac_authentication_bypass = -1,
+                .bridge_vlan_tunnel = -1,
 
                 .bridge_vlan_pvid = BRIDGE_VLAN_KEEP_PVID,
 

src/network/networkd-network.h

@@ -299,6 +299,7 @@ struct Network {
         MulticastRouter multicast_router;
         int bridge_locked;
         int bridge_mac_authentication_bypass;
+        int bridge_vlan_tunnel;
 
         /* Bridge VLAN */
         uint16_t bridge_vlan_pvid;

src/network/networkd-setlink.c

@@ -332,6 +332,12 @@ static int link_configure_fill_message(
                                 return r;
                 }
 
+                if (link->network->bridge_vlan_tunnel >= 0) {
+                        r = sd_netlink_message_append_u8(req, IFLA_BRPORT_VLAN_TUNNEL, link->network->bridge_vlan_tunnel);
+                        if (r < 0)
+                                return r;
+                }
+
                 r = sd_netlink_message_close_container(req);
                 if (r < 0)
                         return r;