diff options
| author | Xin Long <lucien.xin@gmail.com> | 2022-12-09 16:21:38 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-12-13 00:18:25 +0100 |
| commit | 8a321cf7becc6c065ae595b837b826a2a81036b9 (patch) | |
| tree | 5a270103ce4029003641188384a70b2f649986b2 /net | |
| parent | lib: packing: replace bit_reverse() with bitrev8() (diff) | |
| download | linux-8a321cf7becc6c065ae595b837b826a2a81036b9.tar.xz linux-8a321cf7becc6c065ae595b837b826a2a81036b9.zip | |
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 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9c3f5202a97b..c338dfb05d2c 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3320,7 +3320,7 @@ static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route) return; /* no link local addresses on devices flagged as slaves */ - if (idev->dev->flags & IFF_SLAVE) + if (idev->dev->priv_flags & IFF_NO_ADDRCONF) return; ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0); @@ -3560,7 +3560,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, if (idev && idev->cnf.disable_ipv6) break; - if (dev->flags & IFF_SLAVE) { + if (dev->priv_flags & IFF_NO_ADDRCONF) { if (event == NETDEV_UP && !IS_ERR_OR_NULL(idev) && dev->flags & IFF_UP && dev->flags & IFF_MULTICAST) ipv6_mc_up(idev); |