Date: Thu, 14 May 2009 11:52:47 +0300 From: Lars Eggert <lars.eggert@nokia.com> To: "lev@FreeBSD.org" <lev@FreeBSD.org> Cc: "pyunyh@gmail.com" <pyunyh@gmail.com>, "freebsd-stable@freebsd.org" <freebsd-stable@FreeBSD.org>, "d@delphij.net" <d@delphij.net>, "nigel@eyede.com" <nigel@eyede.com> Subject: Re: Re[2]: TCP differences in 7.2 vs 7.1 Message-ID: <40A50D3F-B9DB-41BD-BE2C-92575C0069DD@nokia.com> In-Reply-To: <1842780877.20090514124631@serebryakov.spb.ru> 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> <310A73CC-A32D-4794-BF23-A49715AFCF99@nokia.com> <1842780877.20090514124631@serebryakov.spb.ru>
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In my case, it's a
em4@pci0:12:0:0: class=0x020000 card=0x135e8086 chip=0x105e8086
rev=0x06 hdr=0x00
vendor = 'Intel Corporation'
device = 'PRO/1000 PT'
class = network
subclass = ethernet
Lars
On 2009-5-14, at 11:46, Lev Serebryakov wrote:
> Hello, Lars.
> You wrote 14 ΝΑΡ 2009 Η., 12:28:43:
>
>> 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.
> I have same problem (every one of 100-200 frames) on on-board if_em:
>
> em0@pci0:0:25:0: class=0x020000 card=0x82681043
> chip=0x10bd8086 rev=0x02 hdr=0x00
> vendor = 'Intel Corporation'
> device = '82566DM-2 Gigabit Network Connection'
> class = network
> subclass = ethernet
>
>
>
> --
> // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
>
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