summaryrefslogtreecommitdiffstats
path: root/samples/bpf/test_tunnel_bpf.sh
blob: 312e1722a39f26b77d15ff8ba15f5ebe969a6c65 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# In Namespace 0 (at_ns0) using native tunnel
# Overlay IP: 10.1.1.100
# local 192.16.1.100 remote 192.16.1.200
# veth0 IP: 172.16.1.100, tunnel dev <type>00

# Out of Namespace using BPF set/get on lwtunnel
# Overlay IP: 10.1.1.200
# local 172.16.1.200 remote 172.16.1.100
# veth1 IP: 172.16.1.200, tunnel dev <type>11

function config_device {
	ip netns add at_ns0
	ip link add veth0 type veth peer name veth1
	ip link set veth0 netns at_ns0
	ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
	ip netns exec at_ns0 ip link set dev veth0 up
	ip link set dev veth1 up mtu 1500
	ip addr add dev veth1 172.16.1.200/24
}

function add_gre_tunnel {
	# in namespace
	ip netns exec at_ns0 \
		ip link add dev $DEV_NS type $TYPE key 2 local 172.16.1.100 remote 172.16.1.200
	ip netns exec at_ns0 ip link set dev $DEV_NS up
	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24

	# out of namespace
	ip link add dev $DEV type $TYPE key 2 external
	ip link set dev $DEV up
	ip addr add dev $DEV 10.1.1.200/24
}

function add_erspan_tunnel {
	# in namespace
	ip netns exec at_ns0 \
		ip link add dev $DEV_NS type $TYPE seq key 2 local 172.16.1.100 remote 172.16.1.200 erspan 123
	ip netns exec at_ns0 ip link set dev $DEV_NS up
	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24

	# out of namespace
	ip link add dev $DEV type $TYPE external
	ip link set dev $DEV up
	ip addr add dev $DEV 10.1.1.200/24
}

function add_vxlan_tunnel {
	# Set static ARP entry here because iptables set-mark works
	# on L3 packet, as a result not applying to ARP packets,
	# causing errors at get_tunnel_{key/opt}.

	# in namespace
	ip netns exec at_ns0 \
		ip link add dev $DEV_NS type $TYPE id 2 dstport 4789 gbp remote 172.16.1.200
	ip netns exec at_ns0 ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
	ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
	ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF

	# out of namespace
	ip link add dev $DEV type $TYPE external gbp dstport 4789
	ip link set dev $DEV address 52:54:00:d9:02:00 up
	ip addr add dev $DEV 10.1.1.200/24
	arp -s 10.1.1.100 52:54:00:d9:01:00
}

function add_geneve_tunnel {
	# in namespace
	ip netns exec at_ns0 \
		ip link add dev $DEV_NS type $TYPE id 2 dstport 6081 remote 172.16.1.200
	ip netns exec at_ns0 ip link set dev $DEV_NS up
	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24

	# out of namespace
	ip link add dev $DEV type $TYPE dstport 6081 external
	ip link set dev $DEV up
	ip addr add dev $DEV 10.1.1.200/24
}

function add_ipip_tunnel {
	# in namespace
	ip netns exec at_ns0 \
		ip link add dev $DEV_NS type $TYPE local 172.16.1.100 remote 172.16.1.200
	ip netns exec at_ns0 ip link set dev $DEV_NS up
	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24

	# out of namespace
	ip link add dev $DEV type $TYPE external
	ip link set dev $DEV up
	ip addr add dev $DEV 10.1.1.200/24
}

function attach_bpf {
	DEV=$1
	SET_TUNNEL=$2
	GET_TUNNEL=$3
	tc qdisc add dev $DEV clsact
	tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
	tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
}

function test_gre {
	TYPE=gretap
	DEV_NS=gretap00
	DEV=gretap11
	config_device
	add_gre_tunnel
	attach_bpf $DEV gre_set_tunnel gre_get_tunnel
	ping -c 1 10.1.1.100
	ip netns exec at_ns0 ping -c 1 10.1.1.200
	cleanup
}

function test_erspan {
	TYPE=erspan
	DEV_NS=erspan00
	DEV=erspan11
	config_device
	add_erspan_tunnel
	attach_bpf $DEV erspan_set_tunnel erspan_get_tunnel
	ping -c 1 10.1.1.100
	ip netns exec at_ns0 ping -c 1 10.1.1.200
	cleanup
}

function test_vxlan {
	TYPE=vxlan
	DEV_NS=vxlan00
	DEV=vxlan11
	config_device
	add_vxlan_tunnel
	attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
	ping -c 1 10.1.1.100
	ip netns exec at_ns0 ping -c 1 10.1.1.200
	cleanup
}

function test_geneve {
	TYPE=geneve
	DEV_NS=geneve00
	DEV=geneve11
	config_device
	add_geneve_tunnel
	attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
	ping -c 1 10.1.1.100
	ip netns exec at_ns0 ping -c 1 10.1.1.200
	cleanup
}

function test_ipip {
	TYPE=ipip
	DEV_NS=ipip00
	DEV=ipip11
	config_device
	tcpdump -nei veth1 &
	cat /sys/kernel/debug/tracing/trace_pipe &
	add_ipip_tunnel
	ethtool -K veth1 gso off gro off rx off tx off
	ip link set dev veth1 mtu 1500
	attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
	ping -c 1 10.1.1.100
	ip netns exec at_ns0 ping -c 1 10.1.1.200
	ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
	sleep 0.2
	iperf -c 10.1.1.100 -n 5k -p 5200
	cleanup
}

function cleanup {
	set +ex
	pkill iperf
	ip netns delete at_ns0
	ip link del veth1
	ip link del ipip11
	ip link del gretap11
	ip link del vxlan11
	ip link del geneve11
	ip link del erspan11
	pkill tcpdump
	pkill cat
	set -ex
}

trap cleanup 0 2 3 6 9
cleanup
echo "Testing GRE tunnel..."
test_gre
echo "Testing ERSPAN tunnel..."
test_erspan
echo "Testing VXLAN tunnel..."
test_vxlan
echo "Testing GENEVE tunnel..."
test_geneve
echo "Testing IPIP tunnel..."
test_ipip
echo "*** PASS ***"