Date: Fri, 27 Apr 2012 00:19:05 +0400 From: Andrey Zonov <andrey@zonov.org> To: Mark Felder <feld@feld.me> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 9.0 - BCE_JUMBO_HDRSPLIT kernel option for bce device still needed? Message-ID: <4F99ADB9.2000209@zonov.org> In-Reply-To: <op.wddk9q1l34t2sn@tech304> References: <EABC85F6-8684-428A-854E-16EF9EDCDE7F@free.de> <4F985374.9080807@zonov.org> <op.wddk9q1l34t2sn@tech304>
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On 4/26/12 6:02 PM, Mark Felder wrote: > On Wed, 25 Apr 2012 14:41:40 -0500, Andrey Zonov <andrey@zonov.org> wrote: > >> >> Hi, >> >> There is no such option in the kernel anymore, instead there is >> hw.bce.hdr_split tunable which is turn on by default. >> > > I've tried the kernel option and playing with this tunable on a pair of > HP DL380s and had to give up. I was building ZFS SAN heads and was going > to have 2x bce and 2x igb ethernets each LACP and Jumbo Frames. The bce > devices simply would not work with jumbo frames. The packets disappeared > into the great ether or something. Our switches never saw any being > sent, and receiving jumbo frames showed absolutely no traffic via tcpdump. > > After dropping in a quad Intel NIC (4x igb) everything worked as expected. > > The bce hardware or driver is sketchy and I'd avoid it. Please try this [1] if you can. [1] http://lists.freebsd.org/pipermail/freebsd-net/2012-April/032157.html -- Andrey Zonov
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