netdev - Re: [PATCH 2.6.22-rc5] TCP: Make TCP_RTO

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Message-ID: <467FBFE2.7050605@trash.net>
Date:	Mon, 25 Jun 2007 15:15:14 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	OBATA Noboru <noboru.obata.ar@...achi.com>
CC:	David Miller <davem@...emloft.net>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	netdev@...r.kernel.org
Subject: Re: [PATCH 2.6.22-rc5] TCP: Make TCP_RTO_MAX a variable

OBATA Noboru wrote:
> From: OBATA Noboru <noboru.obata.ar@...achi.com>
> 
> Make TCP_RTO_MAX a variable, and allow a user to change it via a
> new sysctl entry /proc/sys/net/ipv4/tcp_rto_max.  A user can
> then guarantee TCP retransmission to be more controllable, say,
> at least once per 10 seconds, by setting it to 10.  This is
> quite helpful on failover-capable network devices, such as an
> active-backup bonding device.  On such devices, it is desirable
> that TCP retransmits a packet shortly after the failover, which
> is what I would like to do with this patch.  Please see
> Background and Problem below for rationale in detail.


Would it make sense to do this per route?

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