tests/qemu: pass MS_PROTO to gtp-tunnel delete

The MS protocol needs to be passed to gtp-tunnel delete, instead of the
SGSN_GGSN_PROTO.

Fix for:
  + gtp-tunnel add gtp_sgsn v1 200 100 172.99.0.1 fd00::2
  …
  + gtp-tunnel delete gtp_sgsn v1 200 ip6
  genl_socket_talk: No such file or directory

Change-Id: Ib6b011520fe41855b87ed0e2f6f8a6af3d0b2400

tests/qemu/00_test_functions.sh

@@ -8,6 +8,7 @@ alias ggsn_side="ip netns exec ggsn_side"
 
 # MS - SGSN -gtp- GGSN - WEBSERVER
 tunnel_start() {
+	test -n "$MS_PROTO"
 	test -n "$MS"
 	test -n "$MS_PREFLEN"
 	test -n "$SGSN_GGSN_PROTO"
@@ -67,9 +68,9 @@ tunnel_stop() {
 
 	ip link del veth_sgsn
 	ip route del "$WEBSERVER"/"$MS_PREFLEN" dev gtp_sgsn
-	gtp-tunnel delete gtp_sgsn v1 200 "$SGSN_GGSN_PROTO"
+	gtp-tunnel delete gtp_sgsn v1 200 "$MS_PROTO"
 	gtp-link del gtp_sgsn
-	ggsn_side gtp-tunnel delete gtp_ggsn v1 100 "$SGSN_GGSN_PROTO"
+	ggsn_side gtp-tunnel delete gtp_ggsn v1 100 "$MS_PROTO"
 	ggsn_side gtp-link del gtp_ggsn
 	ip netns del ggsn_side
 }

tests/qemu/01_ms_ip4_sgsn_ip4.sh

@@ -1,6 +1,7 @@
 #!/bin/sh -ex
 . /tests/00_test_functions.sh
 
+MS_PROTO="ip"
 MS="172.99.0.1"
 MS_PREFLEN="32"
 SGSN_GGSN_PROTO="ip"

tests/qemu/02_ms_ip4_sgsn_ip6.sh

@@ -1,6 +1,7 @@
 #!/bin/sh -ex
 . /tests/00_test_functions.sh
 
+MS_PROTO="ip"
 MS="172.99.0.1"
 MS_PREFLEN="32"
 SGSN_GGSN_PROTO="ip6"

tests/qemu/03_ms_ip6_sgsn_ip4.sh

@@ -1,6 +1,7 @@
 #!/bin/sh -ex
 . /tests/00_test_functions.sh
 
+MS_PROTO="ip6"
 MS="fd00::"
 MS_PREFLEN="64"
 SGSN_GGSN_PROTO="ip"

tests/qemu/04_ms_ip6_sgsn_ip6.sh

@@ -1,6 +1,7 @@
 #!/bin/sh -ex
 . /tests/00_test_functions.sh
 
+MS_PROTO="ip6"
 MS="fc00::"
 MS_PREFLEN="64"
 SGSN_GGSN_PROTO="ip6"