Re: [PATCH net-next 1/1] tcp: Prevent needless syn-ack rexmt during TWHS

Eric Dumazet
2012-10-26T05:32:27Z

On Fri, 2012-10-26 at 07:06 +0200, Eric Dumazet wrote:

> About earlier patch, this would break :
>
> tcp_abort_on_overflow - BOOLEAN
...
> And even if tcp_abort_on_overflow is TRUE, earlier patch would break
> some ability to have a momentary burst of SYN packets above the listen()
> backlog.

So instead of sending SYNACK immediately, we could try to defer it a
bit.

But before adding yet another trick, we should evaluate if this is
really needed.

The timer wheel we currently use on the listener socket limits us
because of the granularity of the timer (one single timer for all
requests)