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net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf

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Similar to Bonding and Team, to prevent ipv6 addrconf with
IFF_NO_ADDRCONF in slave_dev->priv_flags for slave ports
is also needed in net failover.

Note that dev_open(slave_dev) is called in .slave_register,
which is called after the IFF_NO_ADDRCONF flag is set in
failover_slave_register().

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xin Long 2022-12-09 10:21:40 -05:00 committed by Jakub Kicinski
parent 0aa64df30b
commit cb54d39227
1 changed files with 3 additions and 3 deletions
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6
net/core/failover.c
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@ -80,14 +80,14 @@ static int failover_slave_register(struct net_device *slave_dev)
goto err_upper_link;
}
slave_dev->priv_flags |= IFF_FAILOVER_SLAVE;
slave_dev->priv_flags |= (IFF_FAILOVER_SLAVE | IFF_NO_ADDRCONF);
if (fops && fops->slave_register &&
!fops->slave_register(slave_dev, failover_dev))
return NOTIFY_OK;
netdev_upper_dev_unlink(slave_dev, failover_dev);
slave_dev->priv_flags &= ~IFF_FAILOVER_SLAVE;
slave_dev->priv_flags &= ~(IFF_FAILOVER_SLAVE | IFF_NO_ADDRCONF);
err_upper_link:
netdev_rx_handler_unregister(slave_dev);
done:
@ -121,7 +121,7 @@ int failover_slave_unregister(struct net_device *slave_dev)
netdev_rx_handler_unregister(slave_dev);
netdev_upper_dev_unlink(slave_dev, failover_dev);
slave_dev->priv_flags &= ~IFF_FAILOVER_SLAVE;
slave_dev->priv_flags &= ~(IFF_FAILOVER_SLAVE | IFF_NO_ADDRCONF);
if (fops && fops->slave_unregister &&
!fops->slave_unregister(slave_dev, failover_dev))