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[linux.git] / tools / testing / selftests / bpf / test_tcp_check_syncookie.sh
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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