Re: Kernel 4.13.0-rc4-next-20170811 - IP Routing / Forwarding performance vs Core/RSS number / HT on
flat view
From: Eric Dumazet <hidden>
Date: 2017-08-15 01:17:33
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
On Mon, 2017-08-14 at 18:07 -0700, Eric Dumazet wrote:
Or try to hack the IFF_XMIT_DST_RELEASE flag on the vlan netdev.
Something like :
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index 5e831de3103e2f7092c7fa15534def403bc62fb4..9472de846d5c0960996261cb2843032847fa4bf7 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);