1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4function config_device { 5 ip netns add at_ns0 6 ip netns add at_ns1 7 ip netns add at_ns2 8 ip link add veth0 type veth peer name veth0b 9 ip link add veth1 type veth peer name veth1b 10 ip link add veth2 type veth peer name veth2b 11 ip link set veth0b up 12 ip link set veth1b up 13 ip link set veth2b up 14 ip link set dev veth0b mtu 1500 15 ip link set dev veth1b mtu 1500 16 ip link set dev veth2b mtu 1500 17 ip link set veth0 netns at_ns0 18 ip link set veth1 netns at_ns1 19 ip link set veth2 netns at_ns2 20 ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0 21 ip netns exec at_ns0 ip addr add 2401:db00::1/64 dev veth0 nodad 22 ip netns exec at_ns0 ip link set dev veth0 up 23 ip netns exec at_ns1 ip addr add 172.16.1.101/24 dev veth1 24 ip netns exec at_ns1 ip addr add 2401:db00::2/64 dev veth1 nodad 25 ip netns exec at_ns1 ip link set dev veth1 up 26 ip netns exec at_ns2 ip addr add 172.16.1.200/24 dev veth2 27 ip netns exec at_ns2 ip addr add 2401:db00::3/64 dev veth2 nodad 28 ip netns exec at_ns2 ip link set dev veth2 up 29 ip link add br0 type bridge 30 ip link set br0 up 31 ip link set dev br0 mtu 1500 32 ip link set veth0b master br0 33 ip link set veth1b master br0 34 ip link set veth2b master br0 35} 36 37function add_ipip_tunnel { 38 ip netns exec at_ns0 \ 39 ip link add dev $DEV_NS type ipip local 172.16.1.100 remote 172.16.1.200 40 ip netns exec at_ns0 ip link set dev $DEV_NS up 41 ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24 42 ip netns exec at_ns1 \ 43 ip link add dev $DEV_NS type ipip local 172.16.1.101 remote 172.16.1.200 44 ip netns exec at_ns1 ip link set dev $DEV_NS up 45 # same inner IP address in at_ns0 and at_ns1 46 ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24 47 48 ip netns exec at_ns2 ip link add dev $DEV type ipip external 49 ip netns exec at_ns2 ip link set dev $DEV up 50 ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24 51} 52 53function add_ipip6_tunnel { 54 ip netns exec at_ns0 \ 55 ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::1/64 remote 2401:db00::3/64 56 ip netns exec at_ns0 ip link set dev $DEV_NS up 57 ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24 58 ip netns exec at_ns1 \ 59 ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::2/64 remote 2401:db00::3/64 60 ip netns exec at_ns1 ip link set dev $DEV_NS up 61 # same inner IP address in at_ns0 and at_ns1 62 ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24 63 64 ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ipip6 external 65 ip netns exec at_ns2 ip link set dev $DEV up 66 ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24 67} 68 69function add_ip6ip6_tunnel { 70 ip netns exec at_ns0 \ 71 ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::1/64 remote 2401:db00::3/64 72 ip netns exec at_ns0 ip link set dev $DEV_NS up 73 ip netns exec at_ns0 ip addr add dev $DEV_NS 2601:646::1/64 74 ip netns exec at_ns1 \ 75 ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::2/64 remote 2401:db00::3/64 76 ip netns exec at_ns1 ip link set dev $DEV_NS up 77 # same inner IP address in at_ns0 and at_ns1 78 ip netns exec at_ns1 ip addr add dev $DEV_NS 2601:646::1/64 79 80 ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ip6ip6 external 81 ip netns exec at_ns2 ip link set dev $DEV up 82 ip netns exec at_ns2 ip addr add dev $DEV 2601:646::2/64 83} 84 85function attach_bpf { 86 DEV=$1 87 SET_TUNNEL=$2 88 GET_TUNNEL=$3 89 ip netns exec at_ns2 tc qdisc add dev $DEV clsact 90 ip netns exec at_ns2 tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL 91 ip netns exec at_ns2 tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL 92} 93 94function test_ipip { 95 DEV_NS=ipip_std 96 DEV=ipip_bpf 97 config_device 98# tcpdump -nei br0 & 99 cat /sys/kernel/debug/tracing/trace_pipe & 100 101 add_ipip_tunnel 102 attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel 103 104 ip netns exec at_ns0 ping -c 1 10.1.1.200 105 ip netns exec at_ns2 ping -c 1 10.1.1.100 106 ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null 107 ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null 108 sleep 0.2 109 # tcp check _same_ IP over different tunnels 110 ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200 111 ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201 112 cleanup 113} 114 115# IPv4 over IPv6 tunnel 116function test_ipip6 { 117 DEV_NS=ipip_std 118 DEV=ipip_bpf 119 config_device 120# tcpdump -nei br0 & 121 cat /sys/kernel/debug/tracing/trace_pipe & 122 123 add_ipip6_tunnel 124 attach_bpf $DEV ipip6_set_tunnel ipip6_get_tunnel 125 126 ip netns exec at_ns0 ping -c 1 10.1.1.200 127 ip netns exec at_ns2 ping -c 1 10.1.1.100 128 ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null 129 ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null 130 sleep 0.2 131 # tcp check _same_ IP over different tunnels 132 ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200 133 ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201 134 cleanup 135} 136 137# IPv6 over IPv6 tunnel 138function test_ip6ip6 { 139 DEV_NS=ipip_std 140 DEV=ipip_bpf 141 config_device 142# tcpdump -nei br0 & 143 cat /sys/kernel/debug/tracing/trace_pipe & 144 145 add_ip6ip6_tunnel 146 attach_bpf $DEV ip6ip6_set_tunnel ip6ip6_get_tunnel 147 148 ip netns exec at_ns0 ping -6 -c 1 2601:646::2 149 ip netns exec at_ns2 ping -6 -c 1 2601:646::1 150 ip netns exec at_ns0 iperf -6sD -p 5200 > /dev/null 151 ip netns exec at_ns1 iperf -6sD -p 5201 > /dev/null 152 sleep 0.2 153 # tcp check _same_ IP over different tunnels 154 ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5200 155 ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5201 156 cleanup 157} 158 159function cleanup { 160 set +ex 161 pkill iperf 162 ip netns delete at_ns0 163 ip netns delete at_ns1 164 ip netns delete at_ns2 165 ip link del veth0 166 ip link del veth1 167 ip link del veth2 168 ip link del br0 169 pkill tcpdump 170 pkill cat 171 set -ex 172} 173 174cleanup 175echo "Testing IP tunnels..." 176test_ipip 177test_ipip6 178test_ip6ip6 179echo "*** PASS ***" 180