connman-conf: do nothing in qemu, do not touch eth0

qemu kernel itself is nowdays perfectly capable of setting up
what was passed in via ip=:

    [    1.676847] IP-Config: Complete:
    [    1.677768]      device=eth0, hwaddr=52:54:00:12:34:02, ipaddr=192.168.7.2, mask=255.255.255.0, gw=192.168.7.1
    [    1.679933]      host=192.168.7.2, domain=, nis-domain=(none)
    [    1.681201]      bootserver=255.255.255.255, rootserver=255.255.255.255, rootpath=
    [    1.681203]      nameserver0=8.8.8.8

connman-conf only does the same thing again by (badly and incompletely)
parsing those parameters with sed.

(From OE-Core rev: 3c25b89720417a7b1963f0a32c870208a5803950)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/connman/connman-conf.bb

@@ -1,36 +1,19 @@
-SUMMARY = "Connman config to setup wired interface on qemu machines"
-DESCRIPTION = "This is the ConnMan configuration to set up a Wired \
-network interface for a qemu machine."
+SUMMARY = "Connman config to ignore wired interface on qemu machines"
+DESCRIPTION = "This is the ConnMan configuration to avoid touching wired \
+network interface inside qemu machines."
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/GPL-2.0-only;md5=801f80980d171dd6425610833a22dbe6"
 
-inherit systemd
-
-SRC_URI:append:qemuall = " file://wired.config \
-                           file://wired-setup \
-                           file://wired-connection.service \
-"
 PR = "r2"
 
 S = "${WORKDIR}"
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
 
-FILES:${PN} = "${localstatedir}/* ${datadir}/*"
+FILES:${PN} = "${sysconfdir}/*"
 
-do_install() {
-    #Configure Wired network interface in case of qemu* machines
-    if test -e ${WORKDIR}/wired.config &&
-       test -e ${WORKDIR}/wired-setup &&
-       test -e ${WORKDIR}/wired-connection.service; then
-        install -d ${D}${localstatedir}/lib/connman
-        install -m 0644 ${WORKDIR}/wired.config ${D}${localstatedir}/lib/connman
-        install -d ${D}${datadir}/connman
-        install -m 0755 ${WORKDIR}/wired-setup ${D}${datadir}/connman
-        install -d ${D}${systemd_system_unitdir}
-        install -m 0644 ${WORKDIR}/wired-connection.service ${D}${systemd_system_unitdir}
-        sed -i -e 's|@SCRIPTDIR@|${datadir}/connman|g' ${D}${systemd_system_unitdir}/wired-connection.service
-    fi
+# Kernel IP-Config is perfectly capable of setting up networking passed in via ip=
+do_install:append:qemuall() {
+    mkdir -p ${D}${sysconfdir}/default
+    echo "export EXTRA_PARAM=\"-I eth0\"" > ${D}${sysconfdir}/default/connman
 }
-
-SYSTEMD_SERVICE:${PN}:qemuall = "wired-connection.service"

meta/recipes-connectivity/connman/connman-conf/qemuall/wired-connection.service

@@ -1,10 +0,0 @@
-[Unit]
-Description=Setup a wired interface
-Before=connman.service
-
-[Service]
-Type=oneshot
-ExecStart=@SCRIPTDIR@/wired-setup
-
-[Install]
-WantedBy=network.target

meta/recipes-connectivity/connman/connman-conf/qemuall/wired-setup

@@ -1,16 +0,0 @@
-#!/bin/sh
-
-CONFIGF=/var/lib/connman/wired.config
-
-# Extract wired network config from /proc/cmdline
-NET_CONF=`cat /proc/cmdline |sed -ne 's/^.*ip=\([^ ]*\):\([^ ]*\):\([^ ]*\):\([^ ]*\).*$/\1\/\4\/\3/p'`
-
-# Check if eth0 is already set via kernel cmdline
-if [ "x$NET_CONF" = "x" ]; then
-	# Wired interface is not configured via kernel cmdline
-	# Remove connman config file template
-	rm -f ${CONFIGF}
-else
-	# Setup a connman config accordingly
-	sed -i -e "s|^IPv4 =.*|IPv4 = ${NET_CONF}|" ${CONFIGF}
-fi

meta/recipes-connectivity/connman/connman-conf/qemuall/wired.config

@@ -1,9 +0,0 @@
-[global]
-Name = Wired
-Description = Wired network configuration
-
-[service_ethernet]
-Type = ethernet
-IPv4 =
-MAC = 52:54:00:12:34:56
-Nameservers = 8.8.8.8

meta/recipes-connectivity/connman/connman/connman

@@ -27,7 +27,6 @@ while read dev mtpt fstype rest; do
 done
 
 do_start() {
-	EXTRA_PARAM=""
 	if test $nfsroot -eq 1 ; then
 	    NET_DEVS=`cat /proc/net/dev | sed -ne 's/^\([a-zA-Z0-9 ]*\):.*$/\1/p'`
 	    NET_ADDR=`cat /proc/cmdline | sed -ne 's/^.*ip=\([^ :]*\).*$/\1/p'`
@@ -36,13 +35,13 @@ do_start() {
 		if [ "$NET_ADDR" = dhcp ]; then
 		    ethn=`ifconfig | grep "^eth" | sed -e "s/\(eth[0-9]\)\(.*\)/\1/"`
 		    if [ ! -z "$ethn" ]; then
-			EXTRA_PARAM="-I $ethn"
+			EXTRA_PARAM="$EXTRA_PARAM -I $ethn"
 		    fi
 		else
 		    for i in $NET_DEVS; do
 			ADDR=`ifconfig $i | sed 's/addr://g' | sed -ne 's/^.*inet \([0-9.]*\) .*$/\1/p'`
 			if [ "$NET_ADDR" = "$ADDR" ]; then
-			    EXTRA_PARAM="-I $i"
+			    EXTRA_PARAM="$EXTRA_PARAM -I $i"
 			    break
 			fi
 		    done