netdev - Question on TSO maximum segment sizes.

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Message-ID: <D5C1322C3E673F459512FB59E0DDC32903C4407B@orsmsx414.amr.corp.intel.com>
Date:	Thu, 11 Oct 2007 16:27:14 -0700
From:	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>
To:	<netdev@...r.kernel.org>
Subject: Question on TSO maximum segment sizes.

I'm having an issue with TSO right vs. hardware that can't take the
maximum segment size sent from the stack.  I've been told that the
maximum packet size that can be sent to the hardware today is 64k, but
my hardware can only take 32k in certain modes per queue due to hardware
limitations.  I have two questions regarding this: 1) where is this
value set in the TCP code, and 2) Is this something that can be
configured on the fly?  If the answer to 2 is no, I will try and put
something together to allow this to happen.

Thanks in advance,

PJ Waskiewicz
Intel Corporation
peter.p.waskiewicz.jr@...el.com
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