From: kaixi.fan <fankaixi.li@bytedance.com>
Date: Wed, 18 Aug 2021 02:22:15 +0000 (+0800)
Subject: ovs: clear skb->tstamp in forwarding path
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=01634047bf0d5c2d9b7d8095bb4de1663dbeedeb;p=kernel.git

ovs: clear skb->tstamp in forwarding path

fq qdisc requires tstamp to be cleared in the forwarding path. Now ovs
doesn't clear skb->tstamp. We encountered a problem with linux
version 5.4.56 and ovs version 2.14.1, and packets failed to
dequeue from qdisc when fq qdisc was attached to ovs port.

Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
Signed-off-by: kaixi.fan <fankaixi.li@bytedance.com>
Signed-off-by: xiexiaohui <xiexiaohui.xxh@bytedance.com>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 88deb5b41429f..cf2ce58124896 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -507,6 +507,7 @@ void ovs_vport_send(struct vport *vport, struct sk_buff *skb, u8 mac_proto)
 	}
 
 	skb->dev = vport->dev;
+	skb->tstamp = 0;
 	vport->ops->send(skb);
 	return;