batman-adv: change the MAC of each VLAN upon ndo_set_mac_address

The MAC address of the soft-interface is used to initialise
the "non-purge" TT entry of each existing VLAN. Therefore
when the user invokes ndo_set_mac_address() all the
"non-purge" TT entries have to be updated, not only the one
belonging to the non-tagged network.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index a859322..c002961 100644 (file)
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -129,6 +129,7 @@ static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
 {
        struct batadv_priv *bat_priv = netdev_priv(dev);
+       struct batadv_softif_vlan *vlan;
        struct sockaddr *addr = p;
        uint8_t old_addr[ETH_ALEN];
 
@@ -139,12 +140,17 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
        ether_addr_copy(dev->dev_addr, addr->sa_data);
 
        /* only modify transtable if it has been initialized before */
-       if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) {
-               batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS,
+       if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
+               return 0;
+
+       rcu_read_lock();
+       hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
+               batadv_tt_local_remove(bat_priv, old_addr, vlan->vid,
                                       "mac address changed", false);
-               batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS,
+               batadv_tt_local_add(dev, addr->sa_data, vlan->vid,
                                    BATADV_NULL_IFINDEX, BATADV_NO_MARK);
        }
+       rcu_read_unlock();
 
        return 0;
 }