samples/bpf/test_tunnel_bpf.sh

   1 #!/bin/bash
   2 # In Namespace 0 (at_ns0) using native tunnel
   3 # Overlay IP: 10.1.1.100
   4 # local 192.16.1.100 remote 192.16.1.200
   5 # veth0 IP: 172.16.1.100, tunnel dev <type>00
   6
   7 # Out of Namespace using BPF set/get on lwtunnel
   8 # Overlay IP: 10.1.1.200
   9 # local 172.16.1.200 remote 172.16.1.100
  10 # veth1 IP: 172.16.1.200, tunnel dev <type>11
  11
  12 function config_device {
  13         ip netns add at_ns0
  14         ip link add veth0 type veth peer name veth1
  15         ip link set veth0 netns at_ns0
  16         ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
  17         ip netns exec at_ns0 ip link set dev veth0 up
  18         ip link set dev veth1 up mtu 1500
  19         ip addr add dev veth1 172.16.1.200/24
  20 }
  21
  22 function add_gre_tunnel {
  23         # in namespace
  24         ip netns exec at_ns0 \
  25                 ip link add dev $DEV_NS type $TYPE key 2 local 172.16.1.100 remote 172.16.1.200
  26         ip netns exec at_ns0 ip link set dev $DEV_NS up
  27         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  28
  29         # out of namespace
  30         ip link add dev $DEV type $TYPE key 2 external
  31         ip link set dev $DEV up
  32         ip addr add dev $DEV 10.1.1.200/24
  33 }
  34
  35 function add_vxlan_tunnel {
  36         # Set static ARP entry here because iptables set-mark works
  37         # on L3 packet, as a result not applying to ARP packets,
  38         # causing errors at get_tunnel_{key/opt}.
  39
  40         # in namespace
  41         ip netns exec at_ns0 \
  42                 ip link add dev $DEV_NS type $TYPE id 2 dstport 4789 gbp remote 172.16.1.200
  43         ip netns exec at_ns0 ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
  44         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  45         ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
  46         ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
  47
  48         # out of namespace
  49         ip link add dev $DEV type $TYPE external gbp dstport 4789
  50         ip link set dev $DEV address 52:54:00:d9:02:00 up
  51         ip addr add dev $DEV 10.1.1.200/24
  52         arp -s 10.1.1.100 52:54:00:d9:01:00
  53 }
  54
  55 function add_geneve_tunnel {
  56         # in namespace
  57         ip netns exec at_ns0 \
  58                 ip link add dev $DEV_NS type $TYPE id 2 dstport 6081 remote 172.16.1.200
  59         ip netns exec at_ns0 ip link set dev $DEV_NS up
  60         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  61
  62         # out of namespace
  63         ip link add dev $DEV type $TYPE dstport 6081 external
  64         ip link set dev $DEV up
  65         ip addr add dev $DEV 10.1.1.200/24
  66 }
  67
  68 function add_ipip_tunnel {
  69         # in namespace
  70         ip netns exec at_ns0 \
  71                 ip link add dev $DEV_NS type $TYPE local 172.16.1.100 remote 172.16.1.200
  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 10.1.1.100/24
  74
  75         # out of namespace
  76         ip link add dev $DEV type $TYPE external
  77         ip link set dev $DEV up
  78         ip addr add dev $DEV 10.1.1.200/24
  79 }
  80
  81 function attach_bpf {
  82         DEV=$1
  83         SET_TUNNEL=$2
  84         GET_TUNNEL=$3
  85         tc qdisc add dev $DEV clsact
  86         tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
  87         tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
  88 }
  89
  90 function test_gre {
  91         TYPE=gretap
  92         DEV_NS=gretap00
  93         DEV=gretap11
  94         config_device
  95         add_gre_tunnel
  96         attach_bpf $DEV gre_set_tunnel gre_get_tunnel
  97         ping -c 1 10.1.1.100
  98         ip netns exec at_ns0 ping -c 1 10.1.1.200
  99         cleanup
 100 }
 101
 102 function test_vxlan {
 103         TYPE=vxlan
 104         DEV_NS=vxlan00
 105         DEV=vxlan11
 106         config_device
 107         add_vxlan_tunnel
 108         attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
 109         ping -c 1 10.1.1.100
 110         ip netns exec at_ns0 ping -c 1 10.1.1.200
 111         cleanup
 112 }
 113
 114 function test_geneve {
 115         TYPE=geneve
 116         DEV_NS=geneve00
 117         DEV=geneve11
 118         config_device
 119         add_geneve_tunnel
 120         attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
 121         ping -c 1 10.1.1.100
 122         ip netns exec at_ns0 ping -c 1 10.1.1.200
 123         cleanup
 124 }
 125
 126 function test_ipip {
 127         TYPE=ipip
 128         DEV_NS=ipip00
 129         DEV=ipip11
 130         config_device
 131         tcpdump -nei veth1 &
 132         cat /sys/kernel/debug/tracing/trace_pipe &
 133         add_ipip_tunnel
 134         ethtool -K veth1 gso off gro off rx off tx off
 135         ip link set dev veth1 mtu 1500
 136         attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
 137         ping -c 1 10.1.1.100
 138         ip netns exec at_ns0 ping -c 1 10.1.1.200
 139         ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
 140         sleep 0.2
 141         iperf -c 10.1.1.100 -n 5k -p 5200
 142         cleanup
 143 }
 144
 145 function cleanup {
 146         set +ex
 147         pkill iperf
 148         ip netns delete at_ns0
 149         ip link del veth1
 150         ip link del ipip11
 151         ip link del gretap11
 152         ip link del vxlan11
 153         ip link del geneve11
 154         pkill tcpdump
 155         pkill cat
 156         set -ex
 157 }
 158
 159 cleanup
 160 echo "Testing GRE tunnel..."
 161 test_gre
 162 echo "Testing VXLAN tunnel..."
 163 test_vxlan
 164 echo "Testing GENEVE tunnel..."
 165 test_geneve
 166 echo "Testing IPIP tunnel..."
 167 test_ipip
 168 echo "*** PASS ***"