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bonding: fix the err path for dev hwaddr sync in bond_enslave 

vlan_vids_add_by_dev is called right after dev hwaddr sync, so on
the err path it should unsync dev hwaddr. Otherwise, the slave
dev's hwaddr will never be unsync when this err happens.

Fixes: 1ff412ad77 ("bonding: change the bond's vlan syncing functions with the standard ones")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
zero-colors
Xin Long 2018-03-26 01:16:45 +08:00 committed by David S. Miller
parent eb82a99447
commit 5c78f6bfae
1 changed files with 5 additions and 4 deletions
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9
drivers/net/bonding/bond_main.c
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@ -1565,7 +1565,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
if (res) {
netdev_err(bond_dev, "Couldn't add bond vlan ids to %s\n",
slave_dev->name);
goto err_close;
goto err_hwaddr_unsync;
}
prev_slave = bond_last_slave(bond);
@ -1755,9 +1755,6 @@ err_unregister:
netdev_rx_handler_unregister(slave_dev);
err_detach:
if (!bond_uses_primary(bond))
bond_hw_addr_flush(bond_dev, slave_dev);
vlan_vids_del_by_dev(slave_dev, bond_dev);
if (rcu_access_pointer(bond->primary_slave) == new_slave)
RCU_INIT_POINTER(bond->primary_slave, NULL);
@ -1771,6 +1768,10 @@ err_detach:
synchronize_rcu();
slave_disable_netpoll(new_slave);
err_hwaddr_unsync:
if (!bond_uses_primary(bond))
bond_hw_addr_flush(bond_dev, slave_dev);
err_close:
slave_dev->priv_flags &= ~IFF_BONDING;
dev_close(slave_dev);