netdev - Re: [PATCH net-next] tcp: add tcp_add

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Date:   Fri, 23 Sep 2016 06:42:51 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:     David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Neal Cardwell <ncardwell@...gle.com>,
        Yuchung Cheng <ycheng@...gle.com>
Subject: Re: [PATCH net-next] tcp: add tcp_add_backlog()

On Fri, 2016-09-23 at 09:45 -0300, Marcelo Ricardo Leitner wrote:

> Aye. In that case, what about using tail instead of end?

What do you mean exactly ?

>  Because
> accounting for something that we have to tweak the limits to accept is
> like adding a constant to both sides of the equation.
> But perhaps that would cut out too much of the fat which could be used
> later by the stack.

Are you facing a particular problem with current code ?

I am working to reduce the SACK at their source (the receiver), instead
of trying to filter them when they had to travel all the way back to TCP
sender.