diff options
| author | Xin Long <lucien.xin@gmail.com> | 2022-12-09 10:21:38 -0500 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-12-12 15:18:25 -0800 |
| commit | 8a321cf7becc6c065ae595b837b826a2a81036b9 (patch) | |
| tree | 5a270103ce4029003641188384a70b2f649986b2 /drivers/net | |
| parent | 1280d4b76f3402645aa7075a53f49a3a14be07a8 (diff) | |
net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf
Currently, in bonding it reused the IFF_SLAVE flag and checked it
in ipv6 addrconf to prevent ipv6 addrconf.
However, it is not a proper flag to use for no ipv6 addrconf, for
bonding it has to move IFF_SLAVE flag setting ahead of dev_open()
in bond_enslave(). Also, IFF_MASTER/SLAVE are historical flags
used in bonding and eql, as Jiri mentioned, the new devices like
Team, Failover do not use this flag.
So as Jiri suggested, this patch adds IFF_NO_ADDRCONF in priv_flags
of the device to indicate no ipv6 addconf, and uses it in bonding
and moves IFF_SLAVE flag setting back to its original place.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 4048876f842c..f7767afe116b 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1632,13 +1632,19 @@ static int bond_master_upper_dev_link(struct bonding *bond, struct slave *slave, { struct netdev_lag_upper_info lag_upper_info; enum netdev_lag_tx_type type; + int err; type = bond_lag_tx_type(bond); lag_upper_info.tx_type = type; lag_upper_info.hash_type = bond_lag_hash_type(bond, type); - return netdev_master_upper_dev_link(slave->dev, bond->dev, slave, - &lag_upper_info, extack); + err = netdev_master_upper_dev_link(slave->dev, bond->dev, slave, + &lag_upper_info, extack); + if (err) + return err; + + slave->dev->flags |= IFF_SLAVE; + return 0; } static void bond_upper_dev_unlink(struct bonding *bond, struct slave *slave) @@ -1950,8 +1956,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, } } - /* set slave flag before open to prevent IPv6 addrconf */ - slave_dev->flags |= IFF_SLAVE; + /* set no_addrconf flag before open to prevent IPv6 addrconf */ + slave_dev->priv_flags |= IFF_NO_ADDRCONF; /* open the slave since the application closed it */ res = dev_open(slave_dev, extack); @@ -2254,7 +2260,7 @@ err_close: dev_close(slave_dev); err_restore_mac: - slave_dev->flags &= ~IFF_SLAVE; + slave_dev->priv_flags &= ~IFF_NO_ADDRCONF; if (!bond->params.fail_over_mac || BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { /* XXX TODO - fom follow mode needs to change master's @@ -2446,6 +2452,8 @@ static int __bond_release_one(struct net_device *bond_dev, /* close slave before restoring its mac address */ dev_close(slave_dev); + slave_dev->priv_flags &= ~IFF_NO_ADDRCONF; + if (bond->params.fail_over_mac != BOND_FOM_ACTIVE || BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { /* restore original ("permanent") mac address */ |