From owner-freebsd-net  Mon Sep 16 15:15: 5 2002
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From: Archie Cobbs <archie@dellroad.org>
Message-Id: <200209162159.g8GLxfe88208@arch20m.dellroad.org>
Subject: Re: Proposal: adopt SIOCGLIFNUM interface for enumerating iflist.
In-Reply-To: <200209161712.g8GHCWak023802@khavrinen.lcs.mit.edu>
 "from Garrett Wollman at Sep 16, 2002 01:12:32 pm"
To: Garrett Wollman <wollman@lcs.mit.edu>
Date: Mon, 16 Sep 2002 14:59:41 -0700 (PDT)
Cc: Bruce M Simpson <bms@spc.org>, freebsd-net@FreeBSD.ORG
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Garrett Wollman writes:
> > At this time these applications have to play 'elastic buffer' games with the
> > SIOCGIFCONF ioctl in order to get all of the relevant information. By allowing
> > userland applications to determine the size of this buffer at runtime, we
> > eliminate the need for repeated calls to ifioctl().
> 
> We have already done so: sysctl net.route.iflist.

FYI,
libpdel (ports:devel/libpdel) has code that shows how to do this
and makes it easier. Install the port and type 'man if_get_list'
for details.

-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

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