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[ Upstream commit01634047bf] 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:fb420d5d91("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> Signed-off-by: Sasha Levin <sashal@kernel.org>