samples/bpf/test_tunnel_bpf.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # In Namespace 0 (at_ns0) using native tunnel
   4 # Overlay IP: 10.1.1.100
   5 # local 192.16.1.100 remote 192.16.1.200
   6 # veth0 IP: 172.16.1.100, tunnel dev <type>00
   7
   8 # Out of Namespace using BPF set/get on lwtunnel
   9 # Overlay IP: 10.1.1.200
  10 # local 172.16.1.200 remote 172.16.1.100
  11 # veth1 IP: 172.16.1.200, tunnel dev <type>11
  12
  13 function config_device {
  14         ip netns add at_ns0
  15         ip link add veth0 type veth peer name veth1
  16         ip link set veth0 netns at_ns0
  17         ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
  18         ip netns exec at_ns0 ip link set dev veth0 up
  19         ip link set dev veth1 up mtu 1500
  20         ip addr add dev veth1 172.16.1.200/24
  21 }
  22
  23 function add_gre_tunnel {
  24         # in namespace
  25         ip netns exec at_ns0 \
  26         ip link add dev $DEV_NS type $TYPE seq key 2 \
  27                 local 172.16.1.100 remote 172.16.1.200
  28         ip netns exec at_ns0 ip link set dev $DEV_NS up
  29         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  30
  31         # out of namespace
  32         ip link add dev $DEV type $TYPE key 2 external
  33         ip link set dev $DEV up
  34         ip addr add dev $DEV 10.1.1.200/24
  35 }
  36
  37 function add_ip6gretap_tunnel {
  38
  39         # assign ipv6 address
  40         ip netns exec at_ns0 ip addr add ::11/96 dev veth0
  41         ip netns exec at_ns0 ip link set dev veth0 up
  42         ip addr add dev veth1 ::22/96
  43         ip link set dev veth1 up
  44
  45         # in namespace
  46         ip netns exec at_ns0 \
  47                 ip link add dev $DEV_NS type $TYPE seq flowlabel 0xbcdef key 2 \
  48                 local ::11 remote ::22
  49
  50         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  51         ip netns exec at_ns0 ip addr add dev $DEV_NS fc80::100/96
  52         ip netns exec at_ns0 ip link set dev $DEV_NS up
  53
  54         # out of namespace
  55         ip link add dev $DEV type $TYPE external
  56         ip addr add dev $DEV 10.1.1.200/24
  57         ip addr add dev $DEV fc80::200/24
  58         ip link set dev $DEV up
  59 }
  60
  61 function add_erspan_tunnel {
  62         # in namespace
  63         if [ "$1" == "v1" ]; then
  64                 ip netns exec at_ns0 \
  65                 ip link add dev $DEV_NS type $TYPE seq key 2 \
  66                 local 172.16.1.100 remote 172.16.1.200 \
  67                 erspan_ver 1 erspan 123
  68         else
  69                 ip netns exec at_ns0 \
  70                 ip link add dev $DEV_NS type $TYPE seq key 2 \
  71                 local 172.16.1.100 remote 172.16.1.200 \
  72                 erspan_ver 2 erspan_dir egress erspan_hwid 3
  73         fi
  74         ip netns exec at_ns0 ip link set dev $DEV_NS up
  75         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
  76
  77         # out of namespace
  78         ip link add dev $DEV type $TYPE external
  79         ip link set dev $DEV up
  80         ip addr add dev $DEV 10.1.1.200/24
  81 }
  82
  83 function add_ip6erspan_tunnel {
  84
  85         # assign ipv6 address
  86         ip netns exec at_ns0 ip addr add ::11/96 dev veth0
  87         ip netns exec at_ns0 ip link set dev veth0 up
  88         ip addr add dev veth1 ::22/96
  89         ip link set dev veth1 up
  90
  91         # in namespace
  92         if [ "$1" == "v1" ]; then
  93                 ip netns exec at_ns0 \
  94                 ip link add dev $DEV_NS type $TYPE seq key 2 \
  95                 local ::11 remote ::22 \
  96                 erspan_ver 1 erspan 123
  97         else
  98                 ip netns exec at_ns0 \
  99                 ip link add dev $DEV_NS type $TYPE seq key 2 \
 100                 local ::11 remote ::22 \
 101                 erspan_ver 2 erspan_dir egress erspan_hwid 7
 102         fi
 103         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
 104         ip netns exec at_ns0 ip link set dev $DEV_NS up
 105
 106         # out of namespace
 107         ip link add dev $DEV type $TYPE external
 108         ip addr add dev $DEV 10.1.1.200/24
 109         ip link set dev $DEV up
 110 }
 111
 112 function add_vxlan_tunnel {
 113         # Set static ARP entry here because iptables set-mark works
 114         # on L3 packet, as a result not applying to ARP packets,
 115         # causing errors at get_tunnel_{key/opt}.
 116
 117         # in namespace
 118         ip netns exec at_ns0 \
 119                 ip link add dev $DEV_NS type $TYPE id 2 dstport 4789 gbp remote 172.16.1.200
 120         ip netns exec at_ns0 ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
 121         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
 122         ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
 123         ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
 124
 125         # out of namespace
 126         ip link add dev $DEV type $TYPE external gbp dstport 4789
 127         ip link set dev $DEV address 52:54:00:d9:02:00 up
 128         ip addr add dev $DEV 10.1.1.200/24
 129         arp -s 10.1.1.100 52:54:00:d9:01:00
 130 }
 131
 132 function add_geneve_tunnel {
 133         # in namespace
 134         ip netns exec at_ns0 \
 135                 ip link add dev $DEV_NS type $TYPE id 2 dstport 6081 remote 172.16.1.200
 136         ip netns exec at_ns0 ip link set dev $DEV_NS up
 137         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
 138
 139         # out of namespace
 140         ip link add dev $DEV type $TYPE dstport 6081 external
 141         ip link set dev $DEV up
 142         ip addr add dev $DEV 10.1.1.200/24
 143 }
 144
 145 function add_ipip_tunnel {
 146         # in namespace
 147         ip netns exec at_ns0 \
 148                 ip link add dev $DEV_NS type $TYPE local 172.16.1.100 remote 172.16.1.200
 149         ip netns exec at_ns0 ip link set dev $DEV_NS up
 150         ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
 151
 152         # out of namespace
 153         ip link add dev $DEV type $TYPE external
 154         ip link set dev $DEV up
 155         ip addr add dev $DEV 10.1.1.200/24
 156 }
 157
 158 function attach_bpf {
 159         DEV=$1
 160         SET_TUNNEL=$2
 161         GET_TUNNEL=$3
 162         tc qdisc add dev $DEV clsact
 163         tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
 164         tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
 165 }
 166
 167 function test_gre {
 168         TYPE=gretap
 169         DEV_NS=gretap00
 170         DEV=gretap11
 171         config_device
 172         add_gre_tunnel
 173         attach_bpf $DEV gre_set_tunnel gre_get_tunnel
 174         ping -c 1 10.1.1.100
 175         ip netns exec at_ns0 ping -c 1 10.1.1.200
 176         cleanup
 177 }
 178
 179 function test_ip6gre {
 180         TYPE=ip6gre
 181         DEV_NS=ip6gre00
 182         DEV=ip6gre11
 183         config_device
 184         # reuse the ip6gretap function
 185         add_ip6gretap_tunnel
 186         attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
 187         # underlay
 188         ping6 -c 4 ::11
 189         # overlay: ipv4 over ipv6
 190         ip netns exec at_ns0 ping -c 1 10.1.1.200
 191         ping -c 1 10.1.1.100
 192         # overlay: ipv6 over ipv6
 193         ip netns exec at_ns0 ping6 -c 1 fc80::200
 194         cleanup
 195 }
 196
 197 function test_ip6gretap {
 198         TYPE=ip6gretap
 199         DEV_NS=ip6gretap00
 200         DEV=ip6gretap11
 201         config_device
 202         add_ip6gretap_tunnel
 203         attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
 204         # underlay
 205         ping6 -c 4 ::11
 206         # overlay: ipv4 over ipv6
 207         ip netns exec at_ns0 ping -i .2 -c 1 10.1.1.200
 208         ping -c 1 10.1.1.100
 209         # overlay: ipv6 over ipv6
 210         ip netns exec at_ns0 ping6 -c 1 fc80::200
 211         cleanup
 212 }
 213
 214 function test_erspan {
 215         TYPE=erspan
 216         DEV_NS=erspan00
 217         DEV=erspan11
 218         config_device
 219         add_erspan_tunnel $1
 220         attach_bpf $DEV erspan_set_tunnel erspan_get_tunnel
 221         ping -c 1 10.1.1.100
 222         ip netns exec at_ns0 ping -c 1 10.1.1.200
 223         cleanup
 224 }
 225
 226 function test_ip6erspan {
 227         TYPE=ip6erspan
 228         DEV_NS=ip6erspan00
 229         DEV=ip6erspan11
 230         config_device
 231         add_ip6erspan_tunnel $1
 232         attach_bpf $DEV ip4ip6erspan_set_tunnel ip4ip6erspan_get_tunnel
 233         ping6 -c 3 ::11
 234         ip netns exec at_ns0 ping -c 1 10.1.1.200
 235         cleanup
 236 }
 237
 238 function test_vxlan {
 239         TYPE=vxlan
 240         DEV_NS=vxlan00
 241         DEV=vxlan11
 242         config_device
 243         add_vxlan_tunnel
 244         attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
 245         ping -c 1 10.1.1.100
 246         ip netns exec at_ns0 ping -c 1 10.1.1.200
 247         cleanup
 248 }
 249
 250 function test_geneve {
 251         TYPE=geneve
 252         DEV_NS=geneve00
 253         DEV=geneve11
 254         config_device
 255         add_geneve_tunnel
 256         attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
 257         ping -c 1 10.1.1.100
 258         ip netns exec at_ns0 ping -c 1 10.1.1.200
 259         cleanup
 260 }
 261
 262 function test_ipip {
 263         TYPE=ipip
 264         DEV_NS=ipip00
 265         DEV=ipip11
 266         config_device
 267         tcpdump -nei veth1 &
 268         cat /sys/kernel/debug/tracing/trace_pipe &
 269         add_ipip_tunnel
 270         ethtool -K veth1 gso off gro off rx off tx off
 271         ip link set dev veth1 mtu 1500
 272         attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
 273         ping -c 1 10.1.1.100
 274         ip netns exec at_ns0 ping -c 1 10.1.1.200
 275         ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
 276         sleep 0.2
 277         iperf -c 10.1.1.100 -n 5k -p 5200
 278         cleanup
 279 }
 280
 281 function cleanup {
 282         set +ex
 283         pkill iperf
 284         ip netns delete at_ns0
 285         ip link del veth1
 286         ip link del ipip11
 287         ip link del gretap11
 288         ip link del ip6gre11
 289         ip link del ip6gretap11
 290         ip link del vxlan11
 291         ip link del geneve11
 292         ip link del erspan11
 293         ip link del ip6erspan11
 294         pkill tcpdump
 295         pkill cat
 296         set -ex
 297 }
 298
 299 trap cleanup 0 2 3 6 9
 300 cleanup
 301 echo "Testing GRE tunnel..."
 302 test_gre
 303 echo "Testing IP6GRE tunnel..."
 304 test_ip6gre
 305 echo "Testing IP6GRETAP tunnel..."
 306 test_ip6gretap
 307 echo "Testing ERSPAN tunnel..."
 308 test_erspan v1
 309 test_erspan v2
 310 echo "Testing IP6ERSPAN tunnel..."
 311 test_ip6erspan v1
 312 test_ip6erspan v2
 313 echo "Testing VXLAN tunnel..."
 314 test_vxlan
 315 echo "Testing GENEVE tunnel..."
 316 test_geneve
 317 echo "Testing IPIP tunnel..."
 318 test_ipip
 319 echo "*** PASS ***"