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Commit b89df65c authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

net: bridge: Handle NETDEV_PRE_CHANGEADDR from ports 



When a port device seeks approval of a potential new MAC address, make
sure that should the bridge device end up using this address, all
interested parties would agree with it.

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ca935da7

net/bridge/br.c

+13 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 
 */

static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)

{

	struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);

	struct netdev_notifier_pre_changeaddr_info *prechaddr_info;

	struct net_device *dev = netdev_notifier_info_to_dev(ptr);

	struct net_bridge_port *p;

	struct net_bridge *br;
@@ -56,6 +58,17 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v 
		br_mtu_auto_adjust(br);

		break;



	case NETDEV_PRE_CHANGEADDR:

		if (br->dev->addr_assign_type == NET_ADDR_SET)

			break;

		prechaddr_info = ptr;

		err = dev_pre_changeaddr_notify(br->dev,

						prechaddr_info->dev_addr,

						extack);

		if (err)

			return notifier_from_errno(err);

		break;



	case NETDEV_CHANGEADDR:

		spin_lock_bh(&br->lock);

		br_fdb_changeaddr(p, dev->dev_addr);