From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH] make _minimum_ TCP retransmission timeout configurable Date: Wed, 29 Aug 2007 23:13:53 +0200 Message-ID: <46D5E191.6070401@cosmosbay.com> References: <200708292052.NAA21975@tardy.cup.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: Rick Jones Return-path: Received: from gw1.cosmosbay.com ([86.65.150.130]:60125 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751651AbXH2VOG (ORCPT ); Wed, 29 Aug 2007 17:14:06 -0400 In-Reply-To: <200708292052.NAA21975@tardy.cup.hp.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Rick Jones a =E9crit : > Enable configuration of the minimum TCP Retransmission Timeout via > a new sysctl "tcp_rto_min" to help those who's networks (eg cellular) > have quite variable RTTs avoid spurrious RTOs. >=20 > Signed-off-by: Rick Jones > Signed-off-by: Lamont Jones > --- >=20 > diff -r 1559df81a153 include/linux/sysctl.h > --- a/include/linux/sysctl.h Mon Aug 13 05:00:33 2007 +0000 > +++ b/include/linux/sysctl.h Wed Aug 22 10:42:55 2007 -0700 > @@ -441,6 +441,7 @@ enum > NET_TCP_ALLOWED_CONG_CONTROL=3D123, > NET_TCP_MAX_SSTHRESH=3D124, > NET_TCP_FRTO_RESPONSE=3D125, > + NET_TCP_RTO_MIN=3D126, > }; > =20 > enum { I am sure you can use CTL_UNNUMBERED instead of adding yet another sysc= tl=20 value, as advised in include/linux/sysctl.h ** For new interfaces unless you really need a binary number ** please use CTL_UNNUMBERED. Thank you