Patch "ovs: clear skb->tstamp in forwarding path" has been added to the 5.13-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ovs: clear skb->tstamp in forwarding path

to the 5.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ovs-clear-skb-tstamp-in-forwarding-path.patch
and it can be found in the queue-5.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 26e2aad1e4b930ae12ef48e17cf88ea0db00126b
Author: kaixi.fan <fankaixi.li@xxxxxxxxxxxxx>
Date:   Wed Aug 18 10:22:15 2021 +0800

    ovs: clear skb->tstamp in forwarding path
    
    [ Upstream commit 01634047bf0d5c2d9b7d8095bb4de1663dbeedeb ]
    
    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@xxxxxxxxxxxxx>
    Signed-off-by: xiexiaohui <xiexiaohui.xxh@xxxxxxxxxxxxx>
    Reviewed-by: Cong Wang <cong.wang@xxxxxxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 88deb5b41429..cf2ce5812489 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;