[PATCH bpf-next 10/10] selftests/xsk: display command line options with -h

[Magnus Karlsson <magnus.karlsson@xxxxxxxxx>]

From: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>

Add the -h option to display all available command line options
available for test_xsk.sh and xskxceiver.

Signed-off-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
---
 tools/testing/selftests/bpf/test_xsk.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh
index 94b4b86d5239..baaeb016d699 100755
--- a/tools/testing/selftests/bpf/test_xsk.sh
+++ b/tools/testing/selftests/bpf/test_xsk.sh
@@ -79,12 +79,15 @@
 #
 # Run a specific test from the test suite
 #   sudo ./test_xsk.sh -t TEST_NAME
+#
+# Display the available command line options
+#   sudo ./test_xsk.sh -h
 
 . xsk_prereqs.sh
 
 ETH=""
 
-while getopts "vi:dm:lt:" flag
+while getopts "vi:dm:lt:h" flag
 do
 	case "${flag}" in
 		v) verbose=1;;
@@ -93,6 +96,7 @@ do
 		m) MODE=${OPTARG};;
 		l) list=1;;
 		t) TEST=${OPTARG};;
+		h) help=1;;
 	esac
 done
 
@@ -140,6 +144,11 @@ setup_vethPairs() {
 	ip link set ${VETH0} up
 }
 
+if [[ $help -eq 1 ]]; then
+	./${XSKOBJ}
+        exit
+fi
+
 if [ ! -z $ETH ]; then
 	VETH0=${ETH}
 	VETH1=${ETH}
-- 
2.34.1