From owner-freebsd-current@FreeBSD.ORG Thu Jan 11 12:19:42 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 01D9E16A407 for ; Thu, 11 Jan 2007 12:19:42 +0000 (UTC) (envelope-from dsh@vlink.ru) Received: from rigel.internal.vlink.ru (rigel.internal.vlink.ru [85.172.168.9]) by mx1.freebsd.org (Postfix) with ESMTP id A84CE13C474 for ; Thu, 11 Jan 2007 12:19:41 +0000 (UTC) (envelope-from dsh@vlink.ru) Received: from smtp.smtp.vlink.ru (clamav.smtp.vlink.ru [192.168.4.1]) by deliver.smtp.vlink.ru (Postfix) with ESMTP id 11A4DFECD70 for ; Thu, 11 Jan 2007 15:19:38 +0300 (MSK) Received: from neva.vlink.ru (neva.vlink.ru [85.172.168.250]) by smtp.smtp.vlink.ru (Postfix) with ESMTP id E1BEF10098B1 for ; Thu, 11 Jan 2007 15:19:37 +0300 (MSK) Received: from neva.vlink.ru (localhost [127.0.0.1]) by neva.vlink.ru (8.13.8/8.13.8) with ESMTP id l0BCJZ1k001341 for ; Thu, 11 Jan 2007 15:19:35 +0300 (MSK) (envelope-from dsh@vlink.ru) Received: (from dsh@localhost) by neva.vlink.ru (8.13.8/8.13.8/Submit) id l0BCJYkF001338; Thu, 11 Jan 2007 15:19:34 +0300 (MSK) (envelope-from dsh@vlink.ru) To: freebsd-current@freebsd.org From: Denis Shaposhnikov Date: Thu, 11 Jan 2007 15:19:34 +0300 Message-ID: <87mz4pbvs9.fsf@neva.vlink.ru> User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.5-b27 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 X-Virus-Scanned: ClamAV using ClamSMTP Subject: squid-2.6.6 + TSO + windows 98 clients X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jan 2007 12:19:42 -0000 Hi! I have a fresh CURRENT server with TSO (TCP Segmentation Offload) on a em(4) network interface and Squid-2.6.6. And I have Windows 98 users which use the Squid via PPP connection. They are have MTU 576 bytes. And they can't use the Squid because slow connection to the Squid or timeouts. This problem disappeared if users increase their MTU to 1500 or if I disable TSO on the server. tcpdump of one of failed requests: 10:35:03.592164 IP 192.168.0.100.1035 > 192.168.0.2.3128: S 1423332:1423332(0) win 8192 10:35:03.592274 IP 192.168.0.2.3128 > 192.168.0.100.1035: S 2428819522:2428819522(0) ack 1423333 win 0 10:35:03.799735 IP 192.168.0.100.1035 > 192.168.0.2.3128: . ack 1 win 8576 10:35:03.800244 IP 192.168.0.2.3128 > 192.168.0.100.1035: . ack 1 win 65535 10:35:03.958630 IP 192.168.0.100.1035 > 192.168.0.2.3128: F 1:1(0) ack 1 win 8576 10:35:03.958950 IP 192.168.0.2.3128 > 192.168.0.100.1035: . ack 2 win 65535 10:35:03.958990 IP 192.168.0.2.3128 > 192.168.0.100.1035: F 1:1(0) ack 2 win 65535 10:35:04.104539 IP 192.168.0.100.1035 > 192.168.0.2.3128: . ack 2 win 8576 Does anybody know about this problem? Thanks! -- DSS5-RIPE DSS-RIPN 2:550/5068@fidonet 2:550/5069@fidonet xmpp:dsh@vlink.ru mailto:dsh@vlink.ru http://neva.vlink.ru/~dsh/