From: Jiri Benc jbenc@redhat.com

[ Upstream commit 106c35dda32f8b63f88cad7433f1b8bb0056958a ]

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") Signed-off-by: Jiri Benc jbenc@redhat.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Link: https://lore.kernel.org/bpf/9f177682c387f3f943bb64d849e6c6774df3c5b4.1570539... Signed-off-by: Sasha Levin sashal@kernel.org --- 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 acf7a74f97cd9..59ea56945e6cd 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}"