selftests: openvswitch: add interface support

Includes an associated test to generate netns and connect
interfaces, with the option to include packet tracing.

This will be used in the future when flow support is added
for additional test cases.

Signed-off-by: Aaron Conole <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

1 files changed, 55 insertions, 0 deletions

diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 7ce46700a3ae..18383b0b7b9c 100755
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -70,6 +70,49 @@ ovs_add_dp () {
 	on_exit "ovs_sbx $sbxname python3 $ovs_base/ovs-dpctl.py del-dp $1;"
 }
 
+ovs_add_if () {
+	info "Adding IF to DP: br:$2 if:$3"
+	ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py add-if "$2" "$3" || return 1
+}
+
+ovs_del_if () {
+	info "Deleting IF from DP: br:$2 if:$3"
+	ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py del-if "$2" "$3" || return 1
+}
+
+ovs_netns_spawn_daemon() {
+	sbx=$1
+	shift
+	netns=$1
+	shift
+	info "spawning cmd: $*"
+	ip netns exec $netns $*  >> $ovs_dir/stdout  2>> $ovs_dir/stderr &
+	pid=$!
+	ovs_sbx "$sbx" on_exit "kill -TERM $pid 2>/dev/null"
+}
+
+ovs_add_netns_and_veths () {
+	info "Adding netns attached: sbx:$1 dp:$2 {$3, $4, $5}"
+	ovs_sbx "$1" ip netns add "$3" || return 1
+	on_exit "ovs_sbx $1 ip netns del $3"
+	ovs_sbx "$1" ip link add "$4" type veth peer name "$5" || return 1
+	on_exit "ovs_sbx $1 ip link del $4 >/dev/null 2>&1"
+	ovs_sbx "$1" ip link set "$4" up || return 1
+	ovs_sbx "$1" ip link set "$5" netns "$3" || return 1
+	ovs_sbx "$1" ip netns exec "$3" ip link set "$5" up || return 1
+
+	if [ "$6" != "" ]; then
+		ovs_sbx "$1" ip netns exec "$3" ip addr add "$6" dev "$5" \
+		    || return 1
+	fi
+
+	ovs_add_if "$1" "$2" "$4" || return 1
+	[ $TRACING -eq 1 ] && ovs_netns_spawn_daemon "$1" "$ns" \
+			tcpdump -i any -s 65535
+
+	return 0
+}
+
 usage() {
 	echo
 	echo "$0 [OPTIONS] [TEST]..."
@@ -101,6 +144,18 @@ test_netlink_checks () {
 		return 1
 	fi
 
+	ovs_add_netns_and_veths "test_netlink_checks" nv0 left left0 l0 || \
+	    return 1
+	ovs_add_netns_and_veths "test_netlink_checks" nv0 right right0 r0 || \
+	    return 1
+	[ $(python3 $ovs_base/ovs-dpctl.py show nv0 | grep port | \
+	    wc -l) == 3 ] || \
+	      return 1
+	ovs_del_if "test_netlink_checks" nv0 right0 || return 1
+	[ $(python3 $ovs_base/ovs-dpctl.py show nv0 | grep port | \
+	    wc -l) == 2 ] || \
+	      return 1
+
 	return 0
 }