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| author | Vadim Fedorenko <vfedorenko@yandex-team.ru> | 2017-11-02 15:49:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-04 22:33:06 +0900 |
| commit | 9d917c207d6b212eb5fb4d8ca31826e5b75b4d28 (patch) | |
| tree | b87648881864fac1f099712b10b8a32f2b19d2fd | |
| parent | 1ec6e53029e7fddd73bb92500a2dca05fc393e8d (diff) | |
| download | linux-stable-9d917c207d6b212eb5fb4d8ca31826e5b75b4d28.tar.gz linux-stable-9d917c207d6b212eb5fb4d8ca31826e5b75b4d28.tar.bz2 linux-stable-9d917c207d6b212eb5fb4d8ca31826e5b75b4d28.zip | |
add support of IFF_XMIT_DST_RELEASE bit in vlan
Some time ago Eric Dumazet suggested a "hack the IFF_XMIT_DST_RELEASE
flag on the vlan netdev". But the last comment was "does not support
properly bonding/team.(If the real_dev->privflags IFF_XMIT_DST_RELEASE
bit changes, we want to update all the vlans at the same time )"
I've extended that patch to support changes of IFF_XMIT_DST_RELEASE in
bonding/team.
Both bonding and team call netdev_change_features() after recalculation
of features including priv_flags IFF_XMIT_DST_RELEASE bit. So the only
thing needed to support is to recheck this bit in
vlan_transfer_features().
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Vadim Fedorenko <vfedorenko@yandex-team.ru>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/8021q/vlan.c | 3 | ||||
| -rw-r--r-- | net/8021q/vlan_netlink.c | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 71c3e045505b..a0103500cc6d 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -328,6 +328,9 @@ static void vlan_transfer_features(struct net_device *dev, vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid; #endif + vlandev->priv_flags &= ~IFF_XMIT_DST_RELEASE; + vlandev->priv_flags |= (vlan->real_dev->priv_flags & IFF_XMIT_DST_RELEASE); + netdev_update_features(vlandev); } diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c index 6e7c5a6a7930..6689c0b272a7 100644 --- a/net/8021q/vlan_netlink.c +++ b/net/8021q/vlan_netlink.c @@ -143,6 +143,7 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev, vlan->vlan_proto = proto; vlan->vlan_id = nla_get_u16(data[IFLA_VLAN_ID]); vlan->real_dev = real_dev; + dev->priv_flags |= (real_dev->priv_flags & IFF_XMIT_DST_RELEASE); vlan->flags = VLAN_FLAG_REORDER_HDR; err = vlan_check_real_dev(real_dev, vlan->vlan_proto, vlan->vlan_id); |