[PATCH bpf-next 2/4] selftests/bpf: expose debug arg to shell script for xsk tests

[Ciara Loftus <ciara.loftus@xxxxxxxxx>]

Launching xdpxceiver with -D enables debug mode. Make it possible
to pass this flag to the app via the test_xsk.sh shell script like
so:

./test_xsk.sh -d

Signed-off-by: Ciara Loftus <ciara.loftus@xxxxxxxxx>
---
 tools/testing/selftests/bpf/test_xsk.sh    | 7 ++++++-
 tools/testing/selftests/bpf/xsk_prereqs.sh | 3 ++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh
index 91127a5be90d..a72f8ed2932d 100755
--- a/tools/testing/selftests/bpf/test_xsk.sh
+++ b/tools/testing/selftests/bpf/test_xsk.sh
@@ -74,11 +74,12 @@
 
 . xsk_prereqs.sh
 
-while getopts "cv" flag
+while getopts "cvd" flag
 do
 	case "${flag}" in
 		c) colorconsole=1;;
 		v) verbose=1;;
+		d) debug=1;;
 	esac
 done
 
@@ -135,6 +136,10 @@ if [[ $verbose -eq 1 ]]; then
 	VERBOSE_ARG="-v"
 fi
 
+if [[ $debug -eq 1 ]]; then
+	DEBUG_ARG="-D"
+fi
+
 test_status $retval "${TEST_NAME}"
 
 ## START TESTS
diff --git a/tools/testing/selftests/bpf/xsk_prereqs.sh b/tools/testing/selftests/bpf/xsk_prereqs.sh
index ef8c5b31f4b6..d95018051fcc 100755
--- a/tools/testing/selftests/bpf/xsk_prereqs.sh
+++ b/tools/testing/selftests/bpf/xsk_prereqs.sh
@@ -128,5 +128,6 @@ execxdpxceiver()
 			copy[$index]=${!current}
 		done
 
-	./${XSKOBJ} -i ${VETH0} -i ${VETH1},${NS1} ${copy[*]} -C ${NUMPKTS} ${VERBOSE_ARG}
+	./${XSKOBJ} -i ${VETH0} -i ${VETH1},${NS1} ${copy[*]} -C ${NUMPKTS} ${VERBOSE_ARG} \
+		${DEBUG_ARG}
 }
-- 
2.17.1