From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Dan_No=E9?= Subject: Detecting TCP loss on the receiving side? Date: Thu, 10 Jul 2008 15:44:12 -0400 Message-ID: <4876668C.8040108@limebrokerage.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE To: netdev@vger.kernel.org Return-path: Received: from mail.limebrokerage.com ([64.111.220.126]:54600 "EHLO infra1-jc.limebrokerage.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1759500AbYGJTwT (ORCPT ); Thu, 10 Jul 2008 15:52:19 -0400 Received: from [10.12.20.176] (unknown [10.12.20.176]) by infra1-jc.limebrokerage.com (Postfix) with ESMTP id 194CA17734A for ; Thu, 10 Jul 2008 15:44:13 -0400 (EDT) Sender: netdev-owner@vger.kernel.org List-ID: We're trying to troubleshoot some problems and we'd like to use the=20 struct tcp_info method to gain some information and attempt to detect=20 TCP loss events on the receiving side of a TCP stream. The problem is=20 struct tcp_info is not well documented and my attempts to trace it seem= =20 to reveal that most of the statistics are relevant to the sending side=20 of a TCP connection. Are there any fields (or any other way) to easily detect loss events?=20 We're mostly concerned with detecting when TCP loss or reordering delay= s=20 things resulting in additional latency. Thanks much, Dan --=20 Dan No=E9 Software Engineer Lime Brokerage LLC 781-370-2518