From owner-freebsd-net  Thu Jul 11 15:49:16 2002
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Date: Fri, 12 Jul 2002 00:49:09 +0200 (CEST)
From: Juan Francisco Rodriguez Hervella <jrh@lab.it.uc3m.es>
To: Bosko Milekic <bmilekic@unixdaemons.com>
Cc: freebsd-net@FreeBSD.ORG
Subject: Re: mbuf external buffer reference counters
In-Reply-To: <20020711171510.A19053@unixdaemons.com>
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Ahhh, ok, I misunderstood the first mail :)

Thanks.

On Thu, 11 Jul 2002, Bosko Milekic wrote:

> 
> On Thu, Jul 11, 2002 at 11:00:56PM +0200, Juan Francisco Rodriguez Hervella wrote:
> > First of all, let me say that Im newbie with these topics, 
> > I only know a bit about mbufs, but I dont understand how
> > can an application trim away the refcount if the size is
> > MCLBYTES = 2040 - sizeof(refcount).
> > 
> > Don't this limit the room which an app. can write ?
> 
>  No.  It just changes it.  Also, it's not the application trimming away
>  anything, and the size is not 2040, it's 2048. :-)
> 
>  FWIW, the application has no idea about mbufs or clusters.  These are
>  buffers and structures only the kernel knows about.
> 
> > Thanks.
> > 
> > JFRH
> 
> -- 
> Bosko Milekic
> bmilekic@unixdaemons.com
> bmilekic@FreeBSD.org
> 


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