From 4faa7f927149a5c4ef7a03523f7bc14523cb9baa Mon Sep 17 00:00:00 2001
From: Stuart Mackie <wsmackie@juniper.net>
Date: Fri, 7 Oct 2016 12:24:58 -0700
Subject: Charms for Contrail 3.1 with Mitaka

Change-Id: Id37f3b9743d1974e31fcd7cd9c54be41bb0c47fb
Signed-off-by: Stuart Mackie <wsmackie@juniper.net>
---
 .../neutron-contrail/scripts/create-vrouter.sh     | 133 +++++++++++++++++++++
 charms/trusty/neutron-contrail/scripts/interfaces  |   7 ++
 charms/trusty/neutron-contrail/scripts/juju-header |   5 +
 .../neutron-contrail/scripts/remove-juju-bridge.sh |  17 +++
 .../trusty/neutron-contrail/scripts/vhost-phys.sh  |   6 +
 .../scripts/vrouter-interfaces.awk                 |  38 ++++++
 6 files changed, 206 insertions(+)
 create mode 100755 charms/trusty/neutron-contrail/scripts/create-vrouter.sh
 create mode 100644 charms/trusty/neutron-contrail/scripts/interfaces
 create mode 100644 charms/trusty/neutron-contrail/scripts/juju-header
 create mode 100755 charms/trusty/neutron-contrail/scripts/remove-juju-bridge.sh
 create mode 100755 charms/trusty/neutron-contrail/scripts/vhost-phys.sh
 create mode 100644 charms/trusty/neutron-contrail/scripts/vrouter-interfaces.awk

(limited to 'charms/trusty/neutron-contrail/scripts')

diff --git a/charms/trusty/neutron-contrail/scripts/create-vrouter.sh b/charms/trusty/neutron-contrail/scripts/create-vrouter.sh
new file mode 100755
index 0000000..686a7b7
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/create-vrouter.sh
@@ -0,0 +1,133 @@
+#!/bin/sh -e
+#
+# Script used to configure vRouter interface
+
+configVRouter()
+{
+	cat juju-header
+	echo "auto $1"
+	if [ -e "$2" ]; then
+		cat "$2"
+	else
+		echo "iface $1 inet manual"
+	fi
+	printf "\n%s\n"	"auto vhost0"
+	if [ -e "$3" ]; then
+		cat "$3"
+	else
+		echo "iface vhost0 inet dhcp"
+	fi
+	cat <<-EOF
+		    pre-up ip link add address \$(cat /sys/class/net/$1/address) type vhost
+		    pre-up vif --add $1 --mac \$(cat /sys/class/net/$1/address) --vrf 0 --vhost-phys --type physical
+		    pre-up vif --add vhost0 --mac \$(cat /sys/class/net/$1/address) --vrf 0 --type vhost --xconnect $1
+		    post-down vif --list | awk '/^vif.*OS: vhost0/ {split(\$1, arr, "\\/"); print arr[2];}' | xargs vif --delete
+		    post-down vif --list | awk '/^vif.*OS: $1/ {split(\$1, arr, "\\/"); print arr[2];}' | xargs vif --delete
+		    post-down ip link delete vhost0
+		EOF
+}
+
+ifacedown()
+{
+	for iface; do
+		# ifdown interface
+		# if bridge, save list of interfaces
+		# if bond, save list of slaves
+		if [ ! -e /sys/class/net/$iface ]; then
+			continue
+		fi
+		[ -d /sys/class/net/$iface/bridge ] && saveIfaces $iface
+		[ -d /sys/class/net/$iface/bonding ] && saveSlaves $iface
+		ifdown --force $iface
+	done
+}
+
+ifaceup()
+{
+	for iface; do
+		# ifup interface
+		# if bridge, restore list of interfaces
+		# restore list of slaves if exists (bond)
+		restoreSlaves $iface
+		ifup $iface
+		[ -d /sys/class/net/$iface/bridge ] && restoreIfaces $iface
+	done
+	return 0
+}
+
+restoreIfaces()
+{
+	if [ -e $TMP/$1.ifaces ]; then
+		cat $TMP/$1.ifaces | xargs -n 1 brctl addif $1 || true
+	fi
+}
+
+restoreSlaves()
+{
+	if [ -e $TMP/$1.slaves ]; then
+		cat $TMP/$1.slaves | xargs ifup
+	fi
+}
+
+saveIfaces()
+{
+	if [ -z "$(find /sys/class/net/$1/brif -maxdepth 0 -empty)" ]; then
+		find /sys/class/net/$1/brif | tail -n +2 | xargs -n 1 basename \
+		    > $TMP/$1.ifaces
+	fi
+}
+
+saveSlaves()
+{
+	if [ -s /sys/class/net/$1/bonding/slaves ]; then
+		cat /sys/class/net/$1/bonding/slaves | tr " " "\n" \
+		    > $TMP/$1.slaves
+	fi
+}
+
+TMP=$(mktemp -d /tmp/create-vrouter.XXX)
+
+if [ $# -ne 0 ]; then
+	interface=$1
+else
+	# use default gateway interface
+	interface=$(route -n | awk '$1 == "0.0.0.0" { print $8 }')
+fi
+
+ifacedown $interface vhost0; sleep 5
+# add interfaces.d source line to /etc/network/interfaces
+if ! grep -q '^[[:blank:]]*source /etc/network/interfaces\.d/\*\.cfg[[:blank:]]*$' \
+    /etc/network/interfaces; then
+	printf "\n%s\n" "source /etc/network/interfaces.d/*.cfg" \
+	    >> /etc/network/interfaces
+	# it's possible for conflicting network config to exist in
+	# /etc/network/interfaces.d when we start sourcing it
+	# so disable any config as a precautionary measure
+	for cfg in /etc/network/interfaces.d/*.cfg; do
+		[ -e "$cfg" ] || continue
+		mv "$cfg" "$cfg.save"
+	done
+fi
+mkdir -p /etc/network/interfaces.d
+for cfg in /etc/network/interfaces /etc/network/interfaces.d/*.cfg \
+    /etc/network/*.config; do
+	# for each network interfaces config, extract the config for
+	# the chosen interface whilst commenting it out in the subsequent
+	# replacement config
+	[ -e "$cfg" ] || continue
+	awk -v interface=$interface -v interface_cfg=$TMP/interface.cfg \
+	    -v vrouter_cfg=$TMP/vrouter.cfg -f vrouter-interfaces.awk "$cfg" \
+	    > $TMP/interfaces.cfg
+	if ! diff $TMP/interfaces.cfg "$cfg" > /dev/null; then
+		# create backup
+		mv "$cfg" "$cfg.save"
+		# substitute replacement config for original config
+		cat juju-header $TMP/interfaces.cfg > "$cfg"
+	fi
+done
+# use extracted interface config to create new vrouter config
+configVRouter $interface $TMP/interface.cfg $TMP/vrouter.cfg \
+    > /etc/network/interfaces.d/vrouter.cfg
+ifaceup $interface vhost0
+
+rm -rf $TMP
diff --git a/charms/trusty/neutron-contrail/scripts/interfaces b/charms/trusty/neutron-contrail/scripts/interfaces
new file mode 100644
index 0000000..0356643
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/interfaces
@@ -0,0 +1,7 @@
+# This file describes the network interfaces available on your system
+# and how to activate them. For more information see interfaces(5).
+
+# The loopback network interface
+auto lo
+iface lo inet loopback
+
diff --git a/charms/trusty/neutron-contrail/scripts/juju-header b/charms/trusty/neutron-contrail/scripts/juju-header
new file mode 100644
index 0000000..fccac13
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/juju-header
@@ -0,0 +1,5 @@
+###############################################################################
+# [ WARNING ]
+# Configuration file maintained by Juju. Local changes may be overwritten.
+###############################################################################
+
diff --git a/charms/trusty/neutron-contrail/scripts/remove-juju-bridge.sh b/charms/trusty/neutron-contrail/scripts/remove-juju-bridge.sh
new file mode 100755
index 0000000..d9a9ec1
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/remove-juju-bridge.sh
@@ -0,0 +1,17 @@
+#!/bin/sh -e
+#
+# Script used to remove Juju LXC bridge on MAAS systems
+
+if [ ! -e /sys/class/net/juju-br0 ]; then
+	exit 0
+fi
+
+interface=$(find /sys/class/net/juju-br0/brif | sed -n -e '2p' | xargs basename)
+
+ifdown --force $interface juju-br0; sleep 5
+cp interfaces /etc/network
+cat <<-EOF >> /etc/network/interfaces
+	auto $interface
+	iface $interface inet dhcp
+	EOF
+ifup $interface
diff --git a/charms/trusty/neutron-contrail/scripts/vhost-phys.sh b/charms/trusty/neutron-contrail/scripts/vhost-phys.sh
new file mode 100755
index 0000000..6565d1c
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/vhost-phys.sh
@@ -0,0 +1,6 @@
+#!/bin/sh -e
+#
+# Script used to determine physical interface of vhost0
+
+mac=$(cat /sys/class/net/vhost0/address)
+vif --list | awk -v mac=$mac 'BEGIN { RS="\n\n" }; $3 != "vhost0" && $0 ~ "HWaddr:" mac { print $3; exit 0 }'
diff --git a/charms/trusty/neutron-contrail/scripts/vrouter-interfaces.awk b/charms/trusty/neutron-contrail/scripts/vrouter-interfaces.awk
new file mode 100644
index 0000000..d8e5851
--- /dev/null
+++ b/charms/trusty/neutron-contrail/scripts/vrouter-interfaces.awk
@@ -0,0 +1,38 @@
+function strip(s)
+{
+    sub(/^[[:blank:]]+/, "", s)
+    sub(/[[:blank:]]+$/, "", s)
+    return s
+}
+
+/^[[:blank:]]*(iface|mapping|auto|allow-[^ ]+|source) / {
+    s_iface = 0; iface = 0
+}
+
+$0 ~ "^[[:blank:]]*auto (" interface "|vhost0)[[:blank:]]*$" { print "#" $0; next }
+
+$0 ~ "^[[:blank:]]*iface (" interface "|vhost0) " {
+    s_iface = 1
+    if ($2 == interface) {
+        iface = 1
+        print "iface", interface, $3, "manual" > interface_cfg
+        print "iface vhost0", $3, $4 > vrouter_cfg
+    }
+    print "#" $0
+    next
+}
+
+s_iface == 1 {
+    if (iface == 1) {
+        if (match($1, "^address|netmask|broadcast|metric|gateway$")) {
+            cfg = vrouter_cfg
+        } else {
+            cfg = interface_cfg
+        }
+        print "    " strip($0) > cfg
+    }
+    print "#" $0
+    next
+}
+
+{ print $0 }
-- 
cgit 1.2.3-korg