function get_params {
params=$1; shift
err_msg="$COMMAND $SUBCOMMAND $(echo $params | perl -pe 's/\S+/<$&>/g')"
- for p in $(echo $params); do
+ for p in $params; do
[[ -z "$@" ]] && error "$err_msg"
pname=$(echo -n $p|perl -pe 's/\W/_/g')
eval $pname="$1"; shift
}
function wait_device () {
- tapname=$1; shift
- timeout=$1; shift
+ local tapname=$1; shift
+ local timeout=$1; shift
- expire=$(($(date +%s) + $timeout))
+ local expire=$(($(date +%s) + $timeout))
while ! ip link show up | egrep -q "^[0-9]+: +$tapname:"; do
echo "Waiting for $tapname to come UP...$(($expire - $(date +%s)))s left" >&2
if [ ! -f "$RUN_DIR/ovsdb-server.pid" ]; then
ovsdb-server $DB_CONF_FILE \
--remote=punix:$DB_SOCKET \
- --remote=db:Open_vSwitch,manager_options \
- --private-key=db:SSL,private_key \
- --certificate=db:SSL,certificate \
- --bootstrap-ca-cert=db:SSL,ca_cert \
+ --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
+ --private-key=db:Open_vSwitch,SSL,private_key \
+ --certificate=db:Open_vSwitch,SSL,certificate \
+ --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
--pidfile \
--log-file=$DB_LOG \
--detach >& /dev/null
#################### create functions
function create_bridge () {
- get_params "bridge IP/PREFIX" "$@"
+ get_params "bridge IP/PREFIX" "$1" "$2"
+ shift; shift;
IP=${IP_PREFIX%/*}
PREFIX=${IP_PREFIX#*/}
- # ensure ovs-vswitchd is running
- is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+ W=
+ if ! is_switch_running; then
+ # we can create the bridge even if ovs-vswitchd is not running,
+ # but we need a running ovsdb-server
+ is_db_running || { echo "ovsdb-server not running" >&2; exit 1; }
+ W="--no-wait"
+ fi
+
set -e
- ovs-vsctl --db=unix:$DB_SOCKET -- --may-exist add-br "$bridge" \
+ ovs-vsctl --db=unix:$DB_SOCKET $W -- --may-exist add-br "$bridge" \
-- set bridge "$bridge" datapath_type=planetlab \
- -- set interface "$bridge" options:local_ip="$IP" option:local_netmask="$PREFIX"
- ovs-appctl netdev-pltap/get-tapname "$bridge"
+ -- set interface "$bridge" options:local_ip="$IP" option:local_netmask="$PREFIX" \
+ -- "$@"
+
+ # check that the bridge has actually been created
+ if [ -z "$W" ]; then
+ local tap=$(ovs-appctl netdev-pltap/get-tapname "$bridge")
+ wait_device $tap 10
+ fi
}
function create_port () {
get_params "bridge port" "$@"
+
+ W=
+ if ! is_switch_running; then
+ # we can create the port even if ovs-vswitchd is not running,
+ # but we need a running ovsdb-server
+ is_db_running || { echo "ovsdb-server not running" >&2; exit 1; }
+ W="--no-wait"
+ fi
- # ensure ovs-vswitchd is running
- is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET $W -- --may-exist add-port "$bridge" "$port" \
+ -- set interface "$port" type=tunnel
+}
+
+function get_local_endpoint () {
+
+ get_params "local_port" "$@"
+
+ is_switch_running || { echo "ovs-vswitchd not running" >&2; exit 1; }
set -e
- ovs-vsctl --db=unix:$DB_SOCKET -- --may-exist add-port "$bridge" "$port" -- set interface "$port" type=tunnel
- ovs-appctl --target=ovs-vswitchd netdev-tunnel/get-port "$port"
+ ovs-appctl --target=ovs-vswitchd netdev-tunnel/get-port "$local_port"
}
function set_remote_endpoint () {
get_params "local_port remote_ip remote_UDP_port" "$@"
- # ensure ovs-vswitchd is running
- is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+ W=
+ if ! is_switch_running; then
+ # we can store the info even if ovs-vswitchd is not running,
+ # but we need a running ovsdb-server
+ is_db_running || { echo "ovsdb-server not running" >&2; exit 1; }
+ W="--no-wait"
+ fi
set -e
- ovs-vsctl --db=unix:$DB_SOCKET set interface $local_port \
+ ovs-vsctl --db=unix:$DB_SOCKET $W set interface $local_port \
options:remote_ip=$remote_ip \
options:remote_port=$remote_UDP_port
}
+function set_controller () {
+
+ get_params "bridge_name controller" "$@"
+
+ # ensure ovs-vswitchd is running
+ is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET set-controller "$bridge_name" "$controller"
+}
+
+function del_controller () {
+
+ get_params "bridge_name" "$@"
+
+ # ensure ovs-vswitchd is running
+ is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET del-controller "$bridge_name"
+}
+
#################### del functions
function del_bridge () {
ovs-vsctl --db=unix:$DB_SOCKET show
}
+function get_local_ip () {
+
+ get_params "bridge" "$@"
+
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET br-exists "$bridge" || return
+ local ip=$(ovs-vsctl get interface "$bridge" options:local_ip)
+ local netmask=$(ovs-vsctl get interface "$bridge" options:local_netmask)
+ eval echo $ip/$netmask
+}
+
+function get_local_links () {
+
+ get_params "bridge" "$@"
+
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET br-exists "$bridge" || return
+ ovs-vsctl --db=unix:$DB_SOCKET list-ifaces "$bridge"
+}
+
+function get_mac () {
+
+ get_params "bridge" "$@"
+
+ set -e
+ local tap=$(ovs-appctl netdev-pltap/get-tapname "$bridge")
+ ifconfig "$tap" | awk '/HWaddr/ { print $5 }'
+}
+
+### for demos - connect to an ndnmap deployment to visualize links bandwidth
+# this expects 3 arguments
+# an interface name, L<id1>-<id2> based on your ids in conf.mk
+# the hostname for a ndnmap deployment
+# a linkid, this is the id that this link has in your ndnmap scenario (hard-coded in some json file)
+# this one-shot function writes the current statistics onto the ndnmap site
+# it needs to be called regularly so that ndnmap can do the bw computations
+# would make sense for the caller to redirect stderr onto some relevant location
+function gmap_probe_once () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ rx_bytes=$(ovs-appctl netdev-tunnel/get-rx-bytes $iface)
+ tx_bytes=$(ovs-appctl netdev-tunnel/get-tx-bytes $iface)
+ rx_bits=$(($rx_bytes*8))
+ tx_bits=$(($tx_bytes*8))
+ now=$(date +%s).$(date +%N)
+ trigger=http://${hostname}/bw/${linkid}/${now}/${rx_bits}/${tx_bits}
+# curl -s -L $trigger | grep -q "Got it" || echo Missed event with $trigger
+# echo $trigger
+ curl -s -L $trigger >& /dev/null
+}
+
+### the front end, manages pid and so on
+function gmap_probe () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ looptime=$1; shift
+ [ -z "$looptime" ] && looptime=1
+ pid_file=/var/run/openvswitch/gmap-$iface.pid
+ if [ -f $pid_file ] ; then
+ pid=$(cat $pid_file)
+ [ -n "$pid" ] && kill $pid >& /dev/null
+ rm $pid_file
+ fi
+ # close std fds so that ssh invokations can return
+ exec <&-
+ exec >&-
+ while true; do
+ gmap_probe_once $iface $hostname $linkid
+ sleep $looptime
+ done &
+ # this is the pid for the background process
+ echo $! > $pid_file
+}
+
####################
SUPPORTED_SUBCOMMANDS="start stop status
start_db stop_db start_switch stop_switch
create_bridge create_port del_bridge del_port
-show set_remote_endpoint"
+show get_local_endpoint set_remote_endpoint
+set_controller del_controller gmap_probe
+get_local_ip get_local_links get_mac"
function main () {
message="Usage: $COMMAND <subcommand> ...