#################### create functions
function create_bridge () {
- get_params "IP/PREFIX" "$@"
+ get_params "bridge IP/PREFIX" "$@"
IP=${IP_PREFIX%/*}
PREFIX=${IP_PREFIX#*/}
- set -e
# ensure ovs-vswitchd is running
is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
- # check whether the address is already assigned
- TAPNAME=$(tapname $IP)
- if [ ! -z "$TAPNAME" ]; then
- if ovs-vsctl --db=unix:$DB_SOCKET br-exists "$TAPNAME"; then
- echo $TAPNAME
- exit 0
- fi
- kill_pltap_ovs
- error "$IP already assigned to $TAPNAME"
- fi
-
- # we're clear
- TAPNAME=$(pltap-ovs)
- trap kill_pltap_ovs EXIT
- # xxx wouldn't that be safer if left-aligned ?
- vsysc vif_up << EOF
- $TAPNAME
- $IP
- $PREFIX
-EOF
- wait_device $TAPNAME 60 && \
- ovs-vsctl --db=unix:$DB_SOCKET add-br $TAPNAME -- set bridge $TAPNAME datapath_type=planetlab
- echo $TAPNAME
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET -- --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"
}
function create_port () {
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
}
+### 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_report_once () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ report=$(ovs-vsctl get interface $iface statistics)
+ rx_bytes=$(echo $report | sed -e 's/^.*rx_bytes=//' -e 's/,.*$//')
+ tx_bytes=$(echo $report | sed -e 's/^.*tx_bytes=//' -e 's/,.*$//')
+ 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_report () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ looptime=$1; shift
+ [ -z "$looptime" ] && looptime=1
+# we'd need a means to avoid running 2 instances at the same time
+# but it's kind of hard to keep track of the right pid here..
+# pidfile=/var/run/openvswitch/gmap-$iface.pid
+# if [ -f $pidfile ] ; then
+# pid=$(cat $pidfile)
+# [ -n "$pid" ] && kill $pid
+# rm $pidfile
+# fi
+ while true; do
+# echo $$ > $pidfile
+ gmap_report_once $iface $hostname $linkid
+ sleep $looptime
+ done
+}
+
####################
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 set_remote_endpoint set_controller del_controller gmap_report"
function main () {
message="Usage: $COMMAND <subcommand> ...