From owner-freebsd-net@FreeBSD.ORG  Thu Mar 25 15:45:42 2004
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2FD5B16A4CE
	for <freebsd-net@freebsd.org>; Thu, 25 Mar 2004 15:45:42 -0800 (PST)
Received: from tigra.ip.net.ua (tigra.ip.net.ua [82.193.96.10])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 6B2C843D1D
	for <freebsd-net@freebsd.org>; Thu, 25 Mar 2004 15:45:41 -0800 (PST)
	(envelope-from ru@ip.net.ua)
Received: from heffalump.ip.net.ua (heffalump.ip.net.ua [82.193.96.213])
	by tigra.ip.net.ua (8.12.11/8.12.11) with ESMTP id i2PNmYns027713
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO);
	Fri, 26 Mar 2004 01:48:35 +0200 (EET)
	(envelope-from ru@ip.net.ua)
Received: (from ru@localhost)
	by heffalump.ip.net.ua (8.12.11/8.12.11) id i2PNjR6d007053;
	Fri, 26 Mar 2004 01:45:27 +0200 (EET)
	(envelope-from ru)
Date: Fri, 26 Mar 2004 01:45:27 +0200
From: Ruslan Ermilov <ru@freebsd.org>
To: "Jacob S. Barrett" <jbarrett@amduat.net>
Message-ID: <20040325234527.GC85417@ip.net.ua>
References: <200403251118.40718.jbarrett@amduat.net>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="yLVHuoLXiP9kZBkt"
Content-Disposition: inline
In-Reply-To: <200403251118.40718.jbarrett@amduat.net>
User-Agent: Mutt/1.5.6i
X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp)
cc: freebsd-net@freebsd.org
Subject: Re: Disabling VLAN_HWTAGGING
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 25 Mar 2004 23:45:42 -0000


--yLVHuoLXiP9kZBkt
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Thu, Mar 25, 2004 at 11:18:40AM -0800, Jacob S. Barrett wrote:
> Can you disable VLAN_HWTAGGING?
>=20
Not without modifying if_nge.c, but it should be pretty trivial.

> I am seeing very strange behavior on a if_nge card with VLANs.  If i try =
and=20
> connect an if_vlan to it the kernel panics.  If I connect a ng_vlan to it=
=20
> tcpdump show that the tagged frames are "leaving" the if_nge interface, b=
ut=20
> tcpdump running on a remote host that is crossed over (if_em) show no fra=
mes=20
> leaving the if_nge.
>=20
ng_vlan(4) doesn't provide support for hardware VLAN tagging for output
frames -- it always emits ETHERTYPE_VLAN type Ethernet frames.

> I am wondering if it is something to do VLAN_HWTAGGING.  The if_em cards =
I=20
> have don't do it and work fine, but the if_nge cards don't work at all.
>=20
What FreeBSD version you're seeing the panic on?


Cheers,
--=20
Ruslan Ermilov
FreeBSD committer
ru@FreeBSD.org

--yLVHuoLXiP9kZBkt
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (FreeBSD)

iD8DBQFAY28XUkv4P6juNwoRAjDeAJ466Agw2B1lzxfob8G0jsEhAidvuQCeNCzx
5YOGpJGWVmxYtWolIkXvhnw=
=7F2R
-----END PGP SIGNATURE-----

--yLVHuoLXiP9kZBkt--