netdev - Re: [PATCH] tcp: remove useless update for flag parameter in tcp_enter_frto

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Date:	Tue, 27 Mar 2012 22:27:09 -0700
From:	Yuchung Cheng <ycheng@...gle.com>
To:	Li Yu <raise.sail@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] tcp: remove useless update for flag parameter in tcp_enter_frto_loss()

On Tue, Mar 27, 2012 at 9:23 PM, Li Yu <raise.sail@...il.com> wrote:
>
> It seem that we forget remove below two lines after copying code :)
>
> This update never impacts others.
>
> Sorry for last mail with legal notices improperly, I used wrong
> mail.
>
> Signed-off-by Li Yu <bingtian.ly@...bao.com>
>
> diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
> index e886e2f..b2f8ada 100644
> --- a/net/ipv4/tcp_input.c
> +++ b/net/ipv4/tcp_input.c
> @@ -2169,8 +2169,6 @@ static void tcp_enter_frto_loss(struct sock *sk,
> int allowed_segments, int flag)
>                        /* For some reason this R-bit might get cleared? */
>                        if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS)
>                                tp->retrans_out += tcp_skb_pcount(skb);
> -                       /* ...enter this if branch just for the first segment */
> -                       flag |= FLAG_DATA_ACKED;

The comment explicitly explains why the flag is marked for.


>                } else {
>                        if (TCP_SKB_CB(skb)->sacked & TCPCB_RETRANS)
>                                tp->undo_marker = 0;
> --
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