From owner-freebsd-stable@FreeBSD.ORG Wed Aug 29 12:25:48 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 156A71065675 for ; Wed, 29 Aug 2012 12:25:48 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from bigwig.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:75::2]) by mx1.freebsd.org (Postfix) with ESMTP id DE17D8FC1D for ; Wed, 29 Aug 2012 12:25:47 +0000 (UTC) Received: from jhbbsd.localnet (unknown [209.249.190.124]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 39DA4B972; Wed, 29 Aug 2012 08:25:47 -0400 (EDT) From: John Baldwin To: Peter Jeremy Date: Wed, 29 Aug 2012 08:13:55 -0400 User-Agent: KMail/1.13.5 (FreeBSD/8.2-CBSD-20110714-p17; KDE/4.5.5; amd64; ; ) References: <503C930C.3010405@entel.upc.edu> <503DE1BC.4050907@entel.upc.edu> <20120829101202.GA74970@server.rulingia.com> In-Reply-To: <20120829101202.GA74970@server.rulingia.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Message-Id: <201208290813.55855.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Wed, 29 Aug 2012 08:25:47 -0400 (EDT) Cc: Gustau =?iso-8859-15?q?P=E9rez_i_Querol?= , freebsd-stable@freebsd.org Subject: Re: Problem adding more than 8 network adapters X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Aug 2012 12:25:48 -0000 On Wednesday, August 29, 2012 6:12:02 am Peter Jeremy wrote: > [Moving to -stable and adding jhb@ for his input] >=20 > On 2012-Aug-29 11:32:44 +0200, Gustau P=E9rez i Querol wrote: > >Al 29/08/2012 11:02, En/na Peter Jeremy ha escrit: > >> On 2012-Aug-28 11:44:44 +0200, Gustau P=E9rez i Querol wrote: > >>> I'm running FreeBSD 9.1 RC1/AMD64 with VirtualBox. The problem I'm > >>> facing is that I can't use more than 8 network adapters plugged to the > >>> virtual machine. > >> ... > >>> I don't know if it's a net@ problem or maybe it is a problem with > >>> the emulated PCI-bridge and then stable@ should be contacted. Also, I= 'm > >>> not sure if a real machine would support more than 8 network adapters= or > >>> not. Any hints would be appreciated. > >> I don't think I've ever used more than 6 physical NICs in a host but d= on't > >> know of any reason for >8 to not work. > > > >> Can you please post a "pciconf -lv" from FreeBSD and the equivalent > >> "lspci" from Linux. A FreeBSD verbose boot log might also help. > > > > Sure. I'm attaching them to this mail. I hope the mailing list=20 > >doesn't eat them. If it does, I will post them online and send the URL=20 > >to the mailing list. >=20 > Ah.. lspci shows the 9th LANCE at 02:00.0. The verbose boot shows > FreeBSD finds pcib2 (at pci0 device 25.0) but doesn't see anything > on that bus. ISTR jhb@ will recognize that problem. Silly firmware, VM, whatever it is. :) It's buggy. > >pcib1: at device 24.0 on pci0 > >pcib1: domain 0 > >pcib1: secondary bus 1 > >pcib1: subordinate bus 2 > >pcib1: no prefetched decode > >pcib1: Subtractively decoded bridge. > >pci1: on pcib1 > >pci1: domain=3D0, physical bus=3D1 > >pcib2: at device 25.0 on pci0 > >pcib2: domain 0 > >pcib2: secondary bus 2 > >pcib2: subordinate bus 3 > >pcib2: no prefetched decode > >pcib2: Subtractively decoded bridge. > >pci2: on pcib2 > >pci2: domain=3D0, physical bus=3D2 This is indeed the problem. PCI bus 2 is "claimed" by both pcib1 and pcib2 since the VM author programmed the bridges incorrectly. In this case, the subordinate bus should be "1" and "2", not "2" and "3". You could add a ha= ck to pci_pci.c to fix the subordinate bus on these bridges which should proba= bly fix this. > >00:18.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2) (= prog-if 01 [Subtractive decode]) > > Flags: bus master, 66MHz, fast devsel, latency 64 > > Bus: primary=3D00, secondary=3D01, subordinate=3D01, sec-latency=3D0 > > > >00:19.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2) (= prog-if 01 [Subtractive decode]) > > Flags: bus master, 66MHz, fast devsel, latency 64 > > Bus: primary=3D00, secondary=3D02, subordinate=3D02, sec-latency=3D0 > > I/O behind bridge: 00001000-00001fff > > Memory behind bridge: 40000000-400fffff Note here in this output (presumably from lspci under Linux?), the subordinate bus register =3D=3D secondary bus register for each bridge. =2D-=20 John Baldwin