1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2018 Facebook
4 # Copyright (c) 2019 Cloudflare
5
6 set -eu
7 readonly NS1="ns1-$(mktemp -u XXXXXX)"
8
9 wait_for_ip()
10 {
11 local _i
12 printf "Wait for IP %s to become available " "$1"
13 for _i in $(seq ${MAX_PING_TRIES}); do
14 printf "."
15 if ns1_exec ping -c 1 -W 1 "$1" >/dev/null 2>&1; then
16 echo " OK"
17 return
18 fi
19 sleep 1
20 done
21 echo 1>&2 "ERROR: Timeout waiting for test IP to become available."
22 exit 1
23 }
24
25 get_prog_id()
26 {
27 awk '/ id / {sub(/.* id /, "", $0); print($1)}'
28 }
29
30 ns1_exec()
31 {
32 ip netns exec ${NS1} "$@"
33 }
34
35 setup()
36 {
37 ip netns add ${NS1}
38 ns1_exec ip link set lo up
39
40 ns1_exec sysctl -w net.ipv4.tcp_syncookies=2
41 ns1_exec sysctl -w net.ipv4.tcp_window_scaling=0
42 ns1_exec sysctl -w net.ipv4.tcp_timestamps=0
43 ns1_exec sysctl -w net.ipv4.tcp_sack=0
44
45 wait_for_ip 127.0.0.1
46 wait_for_ip ::1
47 }
48
49 cleanup()
50 {
51 ip netns del ns1 2>/dev/null || :
52 }
53
54 main()
55 {
56 trap cleanup EXIT 2 3 6 15
57 setup
58
59 printf "Testing clsact..."
60 ns1_exec tc qdisc add dev "${TEST_IF}" clsact
61 ns1_exec tc filter add dev "${TEST_IF}" ingress \
62 bpf obj "${BPF_PROG_OBJ}" sec "${CLSACT_SECTION}" da
63
64 BPF_PROG_ID=$(ns1_exec tc filter show dev "${TEST_IF}" ingress | \
65 get_prog_id)
66 ns1_exec "${PROG}" "${BPF_PROG_ID}"
67 ns1_exec tc qdisc del dev "${TEST_IF}" clsact
68
69 printf "Testing XDP..."
70 ns1_exec ip link set "${TEST_IF}" xdp \
71 object "${BPF_PROG_OBJ}" section "${XDP_SECTION}"
72 BPF_PROG_ID=$(ns1_exec ip link show "${TEST_IF}" | get_prog_id)
73 ns1_exec "${PROG}" "${BPF_PROG_ID}"
74 }
75
76 DIR=$(dirname $0)
77 TEST_IF=lo
78 MAX_PING_TRIES=5
79 BPF_PROG_OBJ="${DIR}/test_tcp_check_syncookie_kern.bpf.o"
80 CLSACT_SECTION="tc"
81 XDP_SECTION="xdp"
82 BPF_PROG_ID=0
83 PROG="${DIR}/test_tcp_check_syncookie_user"
84
85 main
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