samples/bpf/test_ipip.sh

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