netdev - Re: [PATCH net] tcp: clear tp->delivered in tcp

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Date:   Fri, 31 Jan 2020 10:29:45 -0800
From:   Yuchung Cheng <ycheng@...gle.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Neal Cardwell <ncardwell@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net] tcp: clear tp->delivered in tcp_disconnect()

On Fri, Jan 31, 2020 at 10:22 AM Eric Dumazet <edumazet@...gle.com> wrote:
>
> tp->delivered needs to be cleared in tcp_disconnect().
>
> tcp_disconnect() is rarely used, but it is worth fixing it.
>
> Fixes: ddf1af6fa00e ("tcp: new delivery accounting")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Yuchung Cheng <ycheng@...gle.com>
Acked-by: Yuchung Cheng <ycheng@...gle.com>
thanks Eric
> Cc: Neal Cardwell <ncardwell@...gle.com>
> ---
>  net/ipv4/tcp.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
> index dd57f1e3618160c1e51d6ff54afa984292614e5c..a8ffdfb61f422228d4af1de600b756c9d3894ef5 100644
> --- a/net/ipv4/tcp.c
> +++ b/net/ipv4/tcp.c
> @@ -2622,6 +2622,7 @@ int tcp_disconnect(struct sock *sk, int flags)
>         tp->snd_cwnd = TCP_INIT_CWND;
>         tp->snd_cwnd_cnt = 0;
>         tp->window_clamp = 0;
> +       tp->delivered = 0;
>         tp->delivered_ce = 0;
>         tcp_set_ca_state(sk, TCP_CA_Open);
>         tp->is_sack_reneg = 0;
> --
> 2.25.0.341.g760bfbb309-goog
>