selftests/bpf/test_tcp_check_syncookie.sh

15 		if ns1_exec ping -c 1 -W 1 "$1" >/dev/null 2>&1; then
30 ns1_exec()  function
38 	ns1_exec ip link set lo up
40 	ns1_exec sysctl -w net.ipv4.tcp_syncookies=2
41 	ns1_exec sysctl -w net.ipv4.tcp_window_scaling=0
42 	ns1_exec sysctl -w net.ipv4.tcp_timestamps=0
43 	ns1_exec sysctl -w net.ipv4.tcp_sack=0
60 	ns1_exec tc qdisc add dev "${TEST_IF}" clsact
61 	ns1_exec tc filter add dev "${TEST_IF}" ingress \
64 	BPF_PROG_ID=$(ns1_exec tc filter show dev "${TEST_IF}" ingress | \
66 	ns1_exec "${PROG}" "${BPF_PROG_ID}"
67 	ns1_exec tc qdisc del dev "${TEST_IF}" clsact
70 	ns1_exec ip link set "${TEST_IF}" xdp \
72 	BPF_PROG_ID=$(ns1_exec ip link show "${TEST_IF}" | get_prog_id)
73 	ns1_exec "${PROG}" "${BPF_PROG_ID}"