Date: Wed, 30 May 2012 18:36:10 +0700 From: Eugene Grosbein <egrosbein@rdtc.ru> To: Bruce Cran <bruce@cran.org.uk> Cc: freebsd-net@freebsd.org Subject: Re: if_em and large mtu bug? Message-ID: <4FC6062A.3010002@rdtc.ru> In-Reply-To: <4FC5FA0B.5010609@cran.org.uk> References: <4FC5FA0B.5010609@cran.org.uk>
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30.05.2012 17:44, Bruce Cran пишет: > Are there any known problems with if_em and jumbo packets? I've found > that my ssh connection breaks (when running dmesg etc.) if I configure > the mtu to 9216 via rc.conf - but if I initially use a 1500 byte mtu and > then manually configure it to 9216 then no problems occur. > > I'm running the latest -current: the hardware is: > > em0: <Intel(R) PRO/1000 Network Connection 7.3.2> port 0xdc00-0xdc1f mem > 0xfbde0000-0xfbdfffff,0xfbd00000-0xfbd7ffff,0xfbddc000-0xfbddffff irq 16 > at device 0.0 on pci1 > em0: Using MSIX interrupts with 3 vectors I confirm this with FreeBSD 8.2-STABLE/amd64, em(4) 7.3.2, Intel PRO/1000 EB. There is a workaround, though: ifconfig em0 -rxcsum -txcsum mtu 9000 work from the beginning. Eugene Grosbein
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