Date: Thu, 14 May 2009 11:28:43 +0300 From: Lars Eggert <lars.eggert@nokia.com> To: "pyunyh@gmail.com" <pyunyh@gmail.com> Cc: "d@delphij.net" <d@delphij.net>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, "nigel@eyede.com" <nigel@eyede.com> Subject: Re: TCP differences in 7.2 vs 7.1 Message-ID: <310A73CC-A32D-4794-BF23-A49715AFCF99@nokia.com> In-Reply-To: <20090514082750.GU65350@michelle.cdnetworks.co.kr> References: <guccc2$8b4$1@ger.gmane.org> <4A09DEF1.2010202@delphij.net> <4A09FDB2.5080307@eyede.com> <20090513004131.GP65350@michelle.cdnetworks.co.kr> <DAF693BD-D7B0-49FA-97EF-41C1EA1FAF84@nokia.com> <20090514082750.GU65350@michelle.cdnetworks.co.kr>
next in thread | previous in thread | raw e-mail | index | archive | help
--Apple-Mail-9--157964867 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Hi, On 2009-5-14, at 11:27, Pyun YongHyeon wrote: > Then you're seeing different problem on em(4). Last time I checked > em(4) TSO code in em(4) didn't use m_pullup and just returned > ENXIO to caller. I'm not sure that is related with your issue but > would you tell us your network configuration? this box is a Dell 2950 server/router running 7.2-STABLE. It has an onboard bce interface and four dual-port Intel PRO/1000 NICs, giving it 8 em interfaces. (Let me know if you want the boot dmesg.) > If you can easily > reproduce the issue would you let us know? Reproducing the issue is as easy as setting net.inet.tcp.tso=1. What's interesting is that I only see the issue on one of the eight em interfaces. That interface is connected to a D-Link DIR-655 WLAN router. When I tcpdump on the other interfaces with TSO enabled, I see no "IP bad-len 0" messages. Lars --Apple-Mail-9--157964867--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?310A73CC-A32D-4794-BF23-A49715AFCF99>