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 /include/linux/netdevice.h | |
| 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 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 2287cb8eb9e4..aad12a179e54 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1662,6 +1662,7 @@ struct net_device_ops { * @IFF_FAILOVER: device is a failover master device * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device + * @IFF_NO_ADDRCONF: prevent ipv6 addrconf * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with * skb_headlen(skb) == 0 (data starts from frag0) * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN @@ -1697,7 +1698,7 @@ enum netdev_priv_flags { IFF_FAILOVER = 1<<27, IFF_FAILOVER_SLAVE = 1<<28, IFF_L3MDEV_RX_HANDLER = 1<<29, - /* was IFF_LIVE_RENAME_OK */ + IFF_NO_ADDRCONF = BIT_ULL(30), IFF_TX_SKB_NO_LINEAR = BIT_ULL(31), IFF_CHANGE_PROTO_DOWN = BIT_ULL(32), }; |