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selftests, bpf: test_tc_tunnel.sh nc: Cannot use -p and -l

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When run test_tc_tunnel.sh, it complains following error

ipip
encap 192.168.1.1 to 192.168.1.2, type ipip, mac none len 100
test basic connectivity
nc: cannot use -p and -l

nc man page has:

     -l  Listen for an incoming connection rather than initiating
         a connection to a remote host.Cannot be used together with
         any of the options -psxz. Additionally, any timeouts specified
         with the -w option are ignored.

Correct nc in server_listen().

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210719223022.66681-1-vincent.mc.li@gmail.com
This commit is contained in:
Vincent Li 2021-07-19 15:30:22 -07:00 committed by Andrii Nakryiko
parent c39aa21599
commit 875fc315db
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/bpf/test_tc_tunnel.sh
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@ -69,7 +69,7 @@ cleanup() {
} }
server_listen() { server_listen() {
ip netns exec "${ns2}" nc "${netcat_opt}" -l -p "${port}" > "${outfile}" & ip netns exec "${ns2}" nc "${netcat_opt}" -l "${port}" > "${outfile}" &
server_pid=$! server_pid=$!
sleep 0.2 sleep 0.2
} }