selftests: fib-onlink: Make quiet by default

Add VERBOSE argument to fib-onlink-tests.sh and make output quiet by
default. Add getopt parsing of inputs and support for -v (verbose) and
-p (pause on fail).

Signed-off-by: David Ahern <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

tools/testing/selftests/net/fib-onlink-tests.sh

···
 # IPv4 and IPv6 onlink tests
 
 PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
+VERBOSE=0
 
 # Network interfaces
 # - odd in current namespace; even in peer ns
···
 
 	if [ ${rc} -eq ${expected} ]; then
 		nsuccess=$((nsuccess+1))
-		printf "\n    TEST: %-50s  [ OK ]\n" "${msg}"
+		printf "    TEST: %-50s  [ OK ]\n" "${msg}"
 	else
 		nfail=$((nfail+1))
-		printf "\n    TEST: %-50s  [FAIL]\n" "${msg}"
+		printf "    TEST: %-50s  [FAIL]\n" "${msg}"
 		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
 			echo
 			echo "hit enter to continue, 'q' to quit"
···
 
 run_cmd()
 {
-	echo
-	echo "COMMAND: $*"
-	eval $*
+	local cmd="$*"
+	local out
+	local rc
+
+	if [ "$VERBOSE" = "1" ]; then
+		printf "    COMMAND: $cmd\n"
+	fi
+
+	out=$(eval $cmd 2>&1)
+	rc=$?
+	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
+		echo "    $out"
+	fi
+
+	[ "$VERBOSE" = "1" ] && echo
+
+	return $rc
 }
 
 get_linklocal()
···
 }
 
 ################################################################################
+# usage
+
+usage()
+{
+	cat <<EOF
+usage: ${0##*/} OPTS
+
+        -p          Pause on fail
+        -v          verbose mode (show commands and output)
+EOF
+}
+
+################################################################################
 # main
 
 nsuccess=0
 nfail=0
+
+while getopts :t:pPhv o
+do
+	case $o in
+		p) PAUSE_ON_FAIL=yes;;
+		v) VERBOSE=$(($VERBOSE + 1));;
+		h) usage; exit 0;;
+		*) usage; exit 1;;
+	esac
+done
 
 cleanup
 setup