From mboxrd@z Thu Jan  1 00:00:00 1970
From: kstailey@yahoo.com (Kenneth Stailey)
Date: Wed, 3 Sep 2003 18:46:24 -0700 (PDT)
Subject: [TUHS] Re: SIMH compilation problems
In-Reply-To: <slrnblcaec.qgd.mirian@trantor.cosmic.com>
Message-ID: <20030904014624.45815.qmail@web10002.mail.yahoo.com>


--- list-tuhs at cosmic.com wrote:
> On Wed,  3 Sep 2003 14:39:28 +0200 (CEST), Rico Pajarola <rp at servium.ch>
> wrote:
> >
> >on FreeBSD you can't send packets directly over bpf (at least not
> >the same way you can on Net-/OpenBSD).
> 
> FreeBSD certainly does let you send packets over bpf.  If you open the
> device (e.g. /dev/bpf0) for both reading and writing, you can write()
> a buffer to the device, and the contents of that buffer will be sent
> verbatim from that device.  I do this all the time for protocol
> testing.

It's actually the pcap library not the bpf driver that can't write in FreeBSD
but can in NetBSD.

http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libpcap/pcap-bpf.c

versus:

http://www.freebsd.org/cgi/cvsweb.cgi/src/contrib/libpcap/pcap-bpf.c

http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/libpcap/Attic/pcap-bpf.c

> I'm not running NetBSD or OpenBSD currently, so perhaps they support a
> richer interface than FreeBSD does, but the essentials are indeed
> there. 
> 
> --Mirian
> _______________________________________________
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> TUHS at minnie.tuhs.org
> http://minnie.tuhs.org/mailman/listinfo/tuhs


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