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Date: Tue, 12 Sep 2006 11:59:04 -0400
To: "Jack Vogel" <jfvogel@gmail.com>, "Andre Oppermann" <andre@freebsd.org>
From: Mike Tancsa <mike@sentex.net>
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References: <E1GN5FA-00085C-CJ@hetzner.co.za> <4506BE2C.1050903@freebsd.org>
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Cc: Ian FREISLICH <if@hetzner.co.za>, current@freebsd.org
Subject: Re: TSO, SMP and the em driver.
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At 11:46 AM 9/12/2006, Jack Vogel wrote:

>Hmm, so if memory serves Linux disallows TSO when you are only
>at 100Mb, I dont recall why, I will have to look into that and perhaps
>have that same limitation in our driver.
>
>Any other data you can give me?

I have tripped over this in the past as well.  Try

http://www.google.com/bsd?hl=en&lr=&q=em0+vlan+promisc*

There is a lot of chatter and analysis in the past.

         ---Mike