From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 70FA6E00C09; Tue, 26 Jul 2016 08:31:46 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mail5.wrs.com (mail5.windriver.com [192.103.53.11]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 2B58BE009AA for ; Tue, 26 Jul 2016 08:31:42 -0700 (PDT) Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail5.wrs.com (8.15.2/8.15.2) with ESMTPS id u6QFVXBI004057 (version=TLSv1 cipher=AES128-SHA bits=128 verify=OK); Tue, 26 Jul 2016 08:31:34 -0700 Received: from [128.224.56.48] (128.224.56.48) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server id 14.3.248.2; Tue, 26 Jul 2016 08:31:33 -0700 To: Mircea Gliga , References: From: Bruce Ashfield Message-ID: <57978254.9080905@windriver.com> Date: Tue, 26 Jul 2016 11:31:32 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: Subject: Re: Some partial kernel configs applied some are ignored X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jul 2016 15:31:46 -0000 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit On 2016-07-26 02:32 AM, Mircea Gliga wrote: > Hello > > I have my own layer and I am trying to configure the kernel using > partial configs. > I'm trying to enable netfilter support into the kernel - not as modules, > so I set the CONFIG.... to "y" > I've created a bbappend file in my layer, here: > recipes-kernel/linux/linux-yocto_3.14.bbappend Which branch is this ? 3.14 spanned a few releases, so I can't tell from the kernel version alone. > The content of this file is: > --- > FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:" > SRC_URI += "file://ipv6enable.cfg file://netfilter_minimal.cfg" > > SRCREV_machine = "${SRCREV}" > --- > > In the ipv6enable.cfg file I also enable the ipv6. > > recipes-kernel/linux/linux-yocto/netfilter_minimal.cfg: > CONFIG_NF_CONNTRACK=y > CONFIG_NF_NAT=y > CONFIG_NETFILTER_XTABLES=y > CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y > CONFIG_NETFILTER_XT_MATCH_STATE=y > CONFIG_NF_DEFRAG_IPV6=y > CONFIG_NF_CONNTRACK_IPV6=y > CONFIG_IP6_NF_IPTABLES=y > CONFIG_NF_NAT_IPV6=y > > recipes-kernel/linux/linux-yocto/ipv6enable.cfg: > CONFIG_IPV6=y > CONFIG_INET6_TUNNEL=y > CONFIG_IPV6_TUNNEL=y > CONFIG_IPV6_ROUTER_PREF=y > > Now I'm configuring the kernel, cleaning first: > * bitbake -c cleansstate linux-yocto > * bitbake linux-yocto -c configure > > When inspecting the .config file from > tmp/work/qemuarm-poky-linux-gnueabi/linux-yocto/3.14.36+gitAUTOINC+060fa80b79_4817747912-r0/linux-qemuarm-standard-build: > > most of the kernel options related to netfilter are set to "m", it's > like my options from my layer are ignored. They wouldn't be ignored, but if they are not the last configs, a dependency or select statement is in play, the option could be changed. In particular, check "bitbake -e" and the linux-yocto kernel recipe for KERNEL_FEATURES .. we have them for netfilter options in particular. KERNEL_FEATURES are applied last (something that has been tweaked in master, but would be the case in an older release). They are applied last, since they are a hard error if they aren't set .. which means that something on the SRC_URI can't simply override them, it has to be another KERNEL_FEATURE. There is a way to create a KERNEL_FEATURE in your bbappend, but in the case of the netfilter options, they are enabled via the KERNEL_EXTRA_FEATURES variable, so you can override and clear that variable to avoid the kernel feature coming in and changing what you are trying to set. Bruce > But the options from the ipv6enable.cfg file are set correctly (even if > set to "n" or "y" changes are reflected in the output file .config) > > I've created the netfilter_minimal.cfg file in this way: > * configure a kernel without any of my changes > * made a backup of .config > * run bitbake linux-yocto -c menuconfig and set the options from there > * save the results to a different file > * resulting file compared with the original file: changes saved in > netfilter_minimal.cfg > > > Thanks in advance > M. > >