linux-kernel - Re: [RFC PATCH] network: return errors if we know tcp

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Message-ID: <20101115200030.GA14551@ms2.inr.ac.ru>
Date:	Mon, 15 Nov 2010 23:00:30 +0300
From:	Alexey Kuznetsov <kuznet@....inr.ac.ru>
To:	Eric Paris <eparis@...hat.com>
Cc:	Patrick McHardy <kaber@...sh.net>, Hua Zhong <hzhong@...il.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	davem@...emloft.net, pekkas@...core.fi, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org
Subject: Re: [RFC PATCH] network: return errors if we know tcp_connect failed

Hello!

On Mon, Nov 15, 2010 at 10:47:46AM -0500, Eric Paris wrote:
> Well I'm (I guess?) surprised that the --reject-with icmp doesn't do
> anything with a local outgoing connection

Yeah. This was "an obvious surpise": for local socket the first icmp error always
arrives on locked socket and gets dropped. I even forgot about this (tcp-reset
still works ok due to backlog) This makes the idea to respect error more attractive.

Alexey
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