168 lines
4.2 KiB
Bash
168 lines
4.2 KiB
Bash
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#!/bin/bash
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# In Namespace 0 (at_ns0) using native tunnel
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# Overlay IP: 10.1.1.100
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# local 192.16.1.100 remote 192.16.1.200
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# veth0 IP: 172.16.1.100, tunnel dev <type>00
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# Out of Namespace using BPF set/get on lwtunnel
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# Overlay IP: 10.1.1.200
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# local 172.16.1.200 remote 172.16.1.100
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# veth1 IP: 172.16.1.200, tunnel dev <type>11
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function config_device {
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ip netns add at_ns0
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ip link add veth0 type veth peer name veth1
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ip link set veth0 netns at_ns0
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ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip link set dev veth1 up mtu 1500
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ip addr add dev veth1 172.16.1.200/24
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}
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function add_gre_tunnel {
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# in namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE key 2 local 172.16.1.100 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# out of namespace
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ip link add dev $DEV type $TYPE key 2 external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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function add_vxlan_tunnel {
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# Set static ARP entry here because iptables set-mark works
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# on L3 packet, as a result not applying to ARP packets,
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# causing errors at get_tunnel_{key/opt}.
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# in namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE id 2 dstport 4789 gbp remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
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ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
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# out of namespace
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ip link add dev $DEV type $TYPE external gbp dstport 4789
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ip link set dev $DEV address 52:54:00:d9:02:00 up
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ip addr add dev $DEV 10.1.1.200/24
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arp -s 10.1.1.100 52:54:00:d9:01:00
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}
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function add_geneve_tunnel {
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# in namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE id 2 dstport 6081 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# out of namespace
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ip link add dev $DEV type $TYPE dstport 6081 external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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function add_ipip_tunnel {
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# in namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE local 172.16.1.100 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# out of namespace
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ip link add dev $DEV type $TYPE external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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function attach_bpf {
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DEV=$1
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SET_TUNNEL=$2
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GET_TUNNEL=$3
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tc qdisc add dev $DEV clsact
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tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
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tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
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}
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function test_gre {
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TYPE=gretap
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DEV_NS=gretap00
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DEV=gretap11
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config_device
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add_gre_tunnel
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attach_bpf $DEV gre_set_tunnel gre_get_tunnel
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ping -c 1 10.1.1.100
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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cleanup
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}
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function test_vxlan {
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TYPE=vxlan
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DEV_NS=vxlan00
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DEV=vxlan11
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config_device
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add_vxlan_tunnel
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attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
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ping -c 1 10.1.1.100
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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cleanup
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}
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function test_geneve {
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TYPE=geneve
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DEV_NS=geneve00
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DEV=geneve11
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config_device
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add_geneve_tunnel
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attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
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ping -c 1 10.1.1.100
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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cleanup
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}
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function test_ipip {
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TYPE=ipip
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DEV_NS=ipip00
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DEV=ipip11
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config_device
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tcpdump -nei veth1 &
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cat /sys/kernel/debug/tracing/trace_pipe &
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add_ipip_tunnel
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ethtool -K veth1 gso off gro off rx off tx off
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ip link set dev veth1 mtu 1500
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attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
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ping -c 1 10.1.1.100
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
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sleep 0.2
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iperf -c 10.1.1.100 -n 5k -p 5200
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cleanup
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}
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function cleanup {
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set +ex
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pkill iperf
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ip netns delete at_ns0
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ip link del veth1
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ip link del ipip11
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ip link del gretap11
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ip link del geneve11
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pkill tcpdump
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pkill cat
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set -ex
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}
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cleanup
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echo "Testing GRE tunnel..."
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test_gre
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echo "Testing VXLAN tunnel..."
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test_vxlan
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echo "Testing GENEVE tunnel..."
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test_geneve
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echo "Testing IPIP tunnel..."
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test_ipip
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echo "*** PASS ***"
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