From owner-freebsd-virtualization@FreeBSD.ORG Thu Feb 3 19:35:11 2011 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9E1D91065708 for ; Thu, 3 Feb 2011 19:35:11 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id 205148FC08 for ; Thu, 3 Feb 2011 19:35:11 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 85BE141C757; Thu, 3 Feb 2011 20:35:09 +0100 (CET) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id 3XnYwgiCd+Zb; Thu, 3 Feb 2011 20:35:09 +0100 (CET) Received: by mail.cksoft.de (Postfix, from userid 66) id 1E64041C6DB; Thu, 3 Feb 2011 20:35:09 +0100 (CET) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 705BA4448F3; Thu, 3 Feb 2011 19:35:03 +0000 (UTC) Date: Thu, 3 Feb 2011 19:35:03 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Monthadar Al Jaberi In-Reply-To: Message-ID: <20110203193259.L80258@maildrop.int.zabbadoz.net> References: <4D484213.6050100@freebsd.org> <4D486108.5060805@freebsd.org> <20110202164827.I80258@maildrop.int.zabbadoz.net> <4D4994CE.2090209@freebsd.org> <4D49AB29.7070909@freebsd.org> <20110203095019.N80258@maildrop.int.zabbadoz.net> <20110203105747.K80258@maildrop.int.zabbadoz.net> <20110203111206.S80258@maildrop.int.zabbadoz.net> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="0-1541120788-1296761703=:80258" Cc: FreeBSD virtualization mailing list Subject: Re: simulating wireless device (if_alloc panic, VirtualBox, VIMAGE) X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Feb 2011 19:35:11 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --0-1541120788-1296761703=:80258 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: > On Thu, Feb 3, 2011 at 12:18 PM, Bjoern A. Zeeb > wrote: >> On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: >> >>> On Thu, Feb 3, 2011 at 11:59 AM, Bjoern A. Zeeb >>> wrote: >>>> >>>> On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: >>>> >>>>>>>> I don't understand why you saw a CRED_TO_VNET of 0 >>>>>>>> I was under the impression that every process/thread in the system >>>>>>>> would >>>>>>>> be >>>>>>>> on vnet0 >>>>>>>> in a vimage kernel. >>>>>>> >>>>>>> This is how my printf looks like: >>>>>>> struct thread *td =3D curthread; >>>>>>> struct vnet *v =3D TD_TO_VNET(td); >>>>>>> struct ucred *cred =3D CRED_TO_VNET(td->ucred); >>>>>>> struct vnet *td_vnet =3D td->td_vnet; >>>>>> >>>>>> here's your problem: >>>>>> >>>>>> strcut vnet *vnet =3D cred->cr_prison->pr_vnet; >>>>> >>>>> When I add CURVNET_SET(CRED_TO_VNET(curthread->td_ucred)); I get a pa= nic >>>>> too... >>>>> But your suggestion works if I do like this: >>>>> curthread->td_vnet =3D curthread->td_ucred->cr_prison->pr_vnet; >>>>> >>>>> CRED_TO_VNET(curthread->td_ucred) returns NULL >>>> >>>> I wonder how you are building your module and if VIMAGE is properly >>>> defined. =A0If it's not that would explain a lot of things. >>> >>> I have put options VIMAGE, rebuild both world and kernel. >>> >>> I can create jails with vnet options... >>> >>> I build my module with the standard Makefile for modules: >>> ... >>> KMOD =A0 =A0=3D =A0wtap >>> ... >>> SRCS =A0 =A0=3D =A0if_wtap_module.c if_wtap.c if_medium.c hal.c >>> >>> .include >> >> Right but are you building your module along with the kernel or >> outside the tree? =A0In the latter case you may want to add soemthing >> like >> >> SRCS+=3D =A0 =A0 =A0 =A0 =A0opt_global.h >> >> .if defined(KERNBUILDDIR) >> MKDEP=3D =A0 =A0 =A0 =A0 =A0-include ${KERNBUILDDIR}/opt_global.h >> .else >> CFLAGS+=3D =A0 =A0 =A0 =A0-include opt_global.h >> MKDEP=3D =A0 =A0 =A0 =A0 =A0-include opt_global.h >> >> opt_global.h: >> =A0 =A0 =A0 =A0echo "#define VIMAGE 1" > ${.TARGET} >> .endif >> >> and/or point KERNBUILDDIR to where you built your kernels. > > Thanks it works now.. One thing you should be aware of is that if you will compile without KERNBUILDDIR set, your module will not work on a non-VIMAGE kernel. Unfortuantely we can only have defaults for one or the other in the case. Worst you may want to only do the "echo" if there was a command line option like -DVIMAGE or the like. Note, setting it to 0 will not do the trick as it would still be defined. /bz --=20 Bjoern A. Zeeb You have to have visions! Going to jail sucks -- All my daemons like it! http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails.html --0-1541120788-1296761703=:80258--