Date: Wed, 27 Nov 2002 13:13:51 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: Robert Watson <rwatson@freebsd.org>, Luigi Rizzo <rizzo@icir.org>, current@freebsd.org Subject: Re: mbuf header bloat ? Message-ID: <3DE5358F.4CA39D16@mindspring.com> References: <15840.8629.324788.887872@grasshopper.cs.duke.edu> <Pine.NEB.3.96L.1021127095837.43889C-100000@fledge.watson.org> <15844.60298.44810.750373@grasshopper.cs.duke.edu> <3DE5275E.9D3E9F9B@mindspring.com> <15845.10492.726439.227885@grasshopper.cs.duke.edu> <3DE52F25.61FAB63C@mindspring.com> <15845.13145.445000.166358@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote:
> If you're a vendor of a device which inserts MAC mtags and needs
> options MAC, you put this code in your driver:
>
> if (mbstat.m_mhlen != MHLEN) {
> printf("Please rebuild your kernel with 'options MAC'\n");
> goto atach_failed_no_mac;
> }
>
> I've already got code like this in my driver to check that m_mclbytes
> and m_mlen is what I expect it to be, since people sometimes change
> them.
I think you are still not getting it, but it's not worth arguing
over.
-- Terry
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