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Date:      Mon, 10 Jul 2000 11:17:57 -0400 (EDT)
From:      Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
To:        Alfred Perlstein <bright@wintelcom.net>
Cc:        net@freebsd.org
Subject:   argh! Re: weird things with M_EXT and large packets
Message-ID:  <200007101517.LAA53686@khavrinen.lcs.mit.edu>
In-Reply-To: <20000709205124.A25571@fw.wintelcom.net>
References:  <20000709140441.T25571@fw.wintelcom.net> <20000709205124.A25571@fw.wintelcom.net>

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<<On Sun, 9 Jul 2000 20:51:24 -0700, Alfred Perlstein <bright@wintelcom.net> said:

> Is there a specific reason the network drivers (or at least fxp)
> don't seem to check page boundries so that discontig kmem can be
> passed to the drivers in large chunks?

Yes -- because it ``can't happen'', and in the normal case it would
never happen so there's no point in wasting cycles to check for it.

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick


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