samples/bpf/test_ipip.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 function 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
  37 function 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
  53 function 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
  69 function 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
  85 function 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
  94 function 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
 116 function 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
 138 function 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
 159 function 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
 174 cleanup
 175 echo "Testing IP tunnels..."
 176 test_ipip
 177 test_ipip6
 178 test_ip6ip6
 179 echo "*** PASS ***"