From owner-freebsd-current  Thu Aug 22 15:40:08 1996
Return-Path: owner-current
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id PAA24682
          for current-outgoing; Thu, 22 Aug 1996 15:40:08 -0700 (PDT)
Received: from who.cdrom.com (who.cdrom.com [204.216.27.3])
          by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id PAA24637;
          Thu, 22 Aug 1996 15:40:00 -0700 (PDT)
Received: from whistle.com (s205m131.whistle.com [207.76.205.131])
          by who.cdrom.com (8.7.5/8.6.11) with ESMTP id PAA17504
          ; Thu, 22 Aug 1996 15:39:59 -0700 (PDT)
Received: (from smap@localhost) by whistle.com (8.7.5/8.6.12) id PAA00981; Thu, 22 Aug 1996 15:39:23 -0700 (PDT)
Received: from bubba.whistle.com(207.76.205.7) by whistle.com via smap (V1.3)
	id sma000974; Thu Aug 22 15:38:53 1996
Received: (from archie@localhost) by bubba.whistle.com (8.6.12/8.6.12) id PAA10234; Thu, 22 Aug 1996 15:38:52 -0700
From: Archie Cobbs <archie@whistle.com>
Message-Id: <199608222238.PAA10234@bubba.whistle.com>
Subject: Re: cvs commit: src/sys/netinet in.h ip_fw.h ip_input.c ip_output.c
To: julian@whistle.com (Julian Elischer)
Date: Thu, 22 Aug 1996 15:38:52 -0700 (PDT)
Cc: sos@freebsd.org, rgrimes@gndrsh.aac.dev.com, pst@jnx.com,
        current@freebsd.org, archie@whistle.com
In-Reply-To: <321CCDE2.794BDF32@whistle.com> from "Julian Elischer" at Aug 22, 96 02:15:14 pm
X-Mailer: ELM [version 2.4 PL24]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk


> > In reply to Rodney W. Grimes who wrote:
> 
> > > context switches are just not going to cut it...
> though sometimes you need to do things with packets that
> require interaction with a database of reading from files etc..
> I put it to you that having a general way of getting the packets 
> out of the kernel is  better than adding bloat IN the kernel to
> do these things.

No reason we can't have both; then everybody's happy :-)

I like Soren's "pointer chaining" idea .. as long as divert sockets
are retained. Then you can use the kernel to do something if it
is suitable (and/or you need performance), or if not, then you can
always do it in user mode.

User mode is also good for testing & debugging new things.

-Archie


___________________________________________________________________________
Archie L. Cobbs, archie@whistle.com  *  Whistle Communications Corporation