netdev - Re: [PATCH net-next] tcp: call tcp_ack

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Message-ID: <20200630092644.131af53c@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Tue, 30 Jun 2020 09:26:44 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Yousuk Seung <ysseung@...gle.com>
Cc:     David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        Willem de Bruijn <willemb@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH net-next] tcp: call tcp_ack_tstamp() when not fully
 acked

On Mon, 29 Jun 2020 19:01:32 -0700 Yousuk Seung wrote:
> When skb is coalesced tcp_ack_tstamp() still needs to be called when not
> fully acked in tcp_clean_rtx_queue(), otherwise SCM_TSTAMP_ACK
> timestamps may never be fired. Since the original patch series had
> dependent commits, this patch fixes the issue instead of reverting by
> restoring calls to tcp_ack_tstamp() when skb is not fully acked.
> 
> Fixes: fdb7eb21ddd3 ("tcp: stamp SCM_TSTAMP_ACK later in tcp_clean_rtx_queue())
> Signed-off-by: Yousuk Seung <ysseung@...gle.com>
> Signed-off-by: Willem de Bruijn <willemb@...gle.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Acked-by: Soheil Hassas Yeganeh <soheil@...gle.com>

Fixes tag: Fixes: fdb7eb21ddd3 ("tcp: stamp SCM_TSTAMP_ACK later in tcp_clean_rtx_queue())
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