From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next] net: loopback: clear skb->tstamp before
 netif_rx()
Date: Sat, 20 Oct 2018 01:01:48 -0700 (PDT)
Message-ID: <20181020.010148.721642416749000297.davem@davemloft.net>
References: <20181020021126.61472-1-edumazet@google.com>
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com, willemb@google.com,
        soheil@google.com
To: edumazet@google.com
Return-path: <netdev-owner@vger.kernel.org>
Received: from shards.monkeyblade.net ([23.128.96.9]:55498 "EHLO
        shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1726261AbeJTQXJ (ORCPT
        <rfc822;netdev@vger.kernel.org>); Sat, 20 Oct 2018 12:23:09 -0400
In-Reply-To: <20181020021126.61472-1-edumazet@google.com>
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

From: Eric Dumazet <edumazet@google.com>
Date: Fri, 19 Oct 2018 19:11:26 -0700

> At least UDP / TCP stacks can now cook skbs with a tstamp using
> MONOTONIC base (or arbitrary values with SCM_TXTIME)
> 
> Since loopback driver does not call (directly or indirectly)
> skb_scrub_packet(), we need to clear skb->tstamp so that
> net_timestamp_check() can eventually resample the time,
> using ktime_get_real().
> 
> Fixes: 80b14dee2bea ("net: Add a new socket option for a future transmit time.")
> Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
> Signed-off-by: Eric Dumazet <edumazet@google.com>

Applied, thanks Eric.