From: Antonio Quartulli antonio@open-mesh.com
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 ---
Changes from v2: - don't increment/decrement vlan->refcounter because we never use the vlan object outside of the rcu_read_lock/unlock area
changes from v1: - declare vlan variable
soft-interface.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/soft-interface.c b/soft-interface.c index f82c267..d962363 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -105,6 +105,7 @@ 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];
@@ -115,12 +116,17 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
/* 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; }