test_can_loopback_mode: Add ip util version check

CAN tests fail on M3 and H3 because their build includes busybox version
of ip (and not iproute one).
This patchs adds a test for detecting if the right ip util is installed.

Change-Id: I5909bc0af23271626dec9c1ed7003bdfc9129041
Signed-off-by: Corentin LABBE <clabbe@baylibre.com>

diff --git a/common/scripts/test_can_loopback_mode.sh b/common/scripts/test_can_loopback_mode.sh
index 4425c5d..9a7acf6 100755 (executable)
--- a/common/scripts/test_can_loopback_mode.sh
+++ b/common/scripts/test_can_loopback_mode.sh
@@ -1,15 +1,27 @@
 #!/bin/sh
 
-if [ ! -e /sys/class/net/can0 ];then
+skip_tests() {
         lava-test-case canconfig_can0 --result skip
         lava-test-case start_can0 --result skip
         lava-test-case send_frames_through_can0 --result skip
         lava-test-case receive_frames_through_can0 --result skip
         lava-test-case stop_can0 --result skip
         exit 0
+}
+
+if [ ! -e /sys/class/net/can0 ];then
+       skip_tests
 fi
+
 sleep 2
 
+ip -V |grep -q BusyBox
+if [ $? -eq 0 ];then
+       echo "WARN: busybox ip is not handled"
+       # busybox ip does not handle bitrate option
+       skip_tests
+fi
+
 #Make sure always that the can interface is down before
 #starting the config step.
 ip link set can0 down