[PATCH v10 5/8] dracut-module-setup: Support the static route with ipv6 mode

In order to enhance kdump to support ipv6, support the static route with ipv6, which ipv4 has supported already. Due to the different format with ipv4 and ipv6, dracut uses bracket "[]" to quote the ipv6 address to identify it in the 2nd kernel. Signed-off-by: Minfei Huang <mhuang(a)redhat.com&gt; Acked-by: Baoquan He <bhe(a)redhat.com&gt; Acked-by: Dave Young <dyoung(a)redhat.com&gt; --- dracut-module-setup.sh | 50 ++++++++++++++++++++++++++++++++++---------------- 1 file changed, 34 insertions(+), 16 deletions(-) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 8c36b90..55a8d82 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -195,27 +195,45 @@ kdump_setup_znet() { echo rd.znet=${NETTYPE},${SUBCHANNELS}${_options} > ${initdir}/etc/cmdline.d/30znet.conf } +# +# For the same subnet region, following is the route format +# ipv4: +# _route='192.168.200.137 dev eth1 src 192.168.200.129 +# cache ' +# ipv6: +# _route='2001:11::11f from :: dev eth1 src 2001:11::120 metric 0 +# cache' +# For the different subnet region, following is the route format +# ipv4: +# _route='192.168.201.215 via 192.168.200.137 dev eth1 src 192.168.200.129 +# cache ' +# ipv6: +# _route='2001:10::120 from :: via 2001:11::11f dev eth1 src 2001:11::120 metric 0 +# cache' get_routes() { local _netdev="$1" _target="$2" local _route _nexthop - _route=`/sbin/ip route get to $_target 2>&1` -# -# in the same subnet region, following is the route format -# _route='192.168.200.137 dev eth1 src 192.168.200.129 -# cache ' -# -# in the different subnet region, following is the route format -# _route='192.168.201.215 via 192.168.200.137 dev eth1 src 192.168.200.129 -# cache ' -# - if `echo $_route | grep -q "via"`; then - # route going to a different subnet via a router - _nexthop=`echo $_route | awk '{print $3}'` - fi - _netdev=$(kdump_setup_ifname $_netdev) + if is_ipv6_host $_target; then + _route=`/sbin/ip -6 route get to $_target 2>&1` + _netdev=$(kdump_setup_ifname $_netdev) + if `echo $_route | grep -q "via"`; then + # route going to a different subnet via a router + _nexthop=`echo $_route | awk '{print $5}'` + echo "rd.route=[$_target]:[$_nexthop]:$_netdev" >> ${initdir}/etc/cmdline.d/45route-static.conf + else + echo "rd.route=[$_target]::$_netdev" >> ${initdir}/etc/cmdline.d/45route-static.conf + fi + else + _route=`/sbin/ip route get to $_target 2>&1` + if `echo $_route | grep -q "via"`; then + # route going to a different subnet via a router + _nexthop=`echo $_route | awk '{print $3}'` + fi + _netdev=$(kdump_setup_ifname $_netdev) - echo "rd.route=$_target:$_nexthop:$_netdev" >> ${initdir}/etc/cmdline.d/45route-static.conf + echo "rd.route=$_target:$_nexthop:$_netdev" >> ${initdir}/etc/cmdline.d/45route-static.conf + fi } # Setup dracut to bringup a given network interface -- 2.1.0