Out of the three nc implementations widely in use, at least two (BSD netcat
and nmap-ncat) do not support -l combined with -s. Modify the nc invocation
to be accepted by all of them.

Fixes: 17a90a788473 ("selftests/bpf: test that GSO works in lwt_ip_encap")
Cc: Peter Oskolkov <p...@google.com>
Signed-off-by: Jiri Benc <jb...@redhat.com>
---
 tools/testing/selftests/bpf/test_lwt_ip_encap.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_lwt_ip_encap.sh 
b/tools/testing/selftests/bpf/test_lwt_ip_encap.sh
index acf7a74f97cd..59ea56945e6c 100755
--- a/tools/testing/selftests/bpf/test_lwt_ip_encap.sh
+++ b/tools/testing/selftests/bpf/test_lwt_ip_encap.sh
@@ -314,15 +314,15 @@ test_gso()
        command -v nc >/dev/null 2>&1 || \
                { echo >&2 "nc is not available: skipping TSO tests"; return; }
 
-       # listen on IPv*_DST, capture TCP into $TMPFILE
+       # listen on port 9000, capture TCP into $TMPFILE
        if [ "${PROTO}" == "IPv4" ] ; then
                IP_DST=${IPv4_DST}
                ip netns exec ${NS3} bash -c \
-                       "nc -4 -l -s ${IPv4_DST} -p 9000 > ${TMPFILE} &"
+                       "nc -4 -l -p 9000 > ${TMPFILE} &"
        elif [ "${PROTO}" == "IPv6" ] ; then
                IP_DST=${IPv6_DST}
                ip netns exec ${NS3} bash -c \
-                       "nc -6 -l -s ${IPv6_DST} -p 9000 > ${TMPFILE} &"
+                       "nc -6 -l -p 9000 > ${TMPFILE} &"
                RET=$?
        else
                echo "    test_gso: unknown PROTO: ${PROTO}"
-- 
2.18.1

Reply via email to