2 # SPDX-License-Identifier: GPL-2.0
4 # This test is for checking VXLAN underlay in a non-default VRF.
6 # It simulates two hypervisors running a VM each using four network namespaces:
7 # two for the HVs, two for the VMs.
8 # A small VXLAN tunnel is made between the two hypervisors to have the two vms
9 # in the same virtual L2:
11 # +-------------------+ +-------------------+
13 # | vm-1 netns | | vm-2 netns |
15 # | +-------------+ | | +-------------+ |
16 # | | veth-hv | | | | veth-hv | |
17 # | | 10.0.0.1/24 | | | | 10.0.0.2/24 | |
18 # | +-------------+ | | +-------------+ |
20 # +-------------------+ +-------------------+
24 # +-----------------------------------+ +------------------------------------+
26 # | +----------+ | | +----------+ |
27 # | | veth-tap | | | | veth-tap | |
28 # | +----+-----+ | | +----+-----+ |
30 # | +--+--+ +--------------+ | | +--------------+ +--+--+ |
31 # | | br0 | | vrf-underlay | | | | vrf-underlay | | br0 | |
32 # | +--+--+ +-------+------+ | | +------+-------+ +--+--+ |
34 # | +---+----+ +-------+-------+ | | +-------+-------+ +---+----+ |
35 # | | vxlan0 |....| veth0 |.|...|.| veth0 |....| vxlan0 | |
36 # | +--------+ | 172.16.0.1/24 | | | | 172.16.0.2/24 | +--------+ |
37 # | +---------------+ | | +---------------+ |
39 # | hv-1 netns | | hv-2 netns |
41 # +-----------------------------------+ +------------------------------------+
43 # This tests both the connectivity between vm-1 and vm-2, and that the underlay
44 # can be moved in and out of the vrf by unsetting and setting veth0's master.
49 ip link del veth-hv-1 2>/dev/null || true
50 ip link del veth-tap 2>/dev/null || true
52 for ns in hv-1 hv-2 vm-1 vm-2; do
53 ip netns del $ns 2>/dev/null || true
60 [[ $1 == "clean" ]] && exit 0
64 # Setup "Hypervisors" simulated with netns
65 ip link add veth-hv-1 type veth peer name veth-hv-2
66 setup-hv-networking() {
70 ip link set veth-hv-$hv netns hv-$hv
71 ip -netns hv-$hv link set veth-hv-$hv name veth0
73 ip -netns hv-$hv link add vrf-underlay type vrf table 1
74 ip -netns hv-$hv link set vrf-underlay up
75 ip -netns hv-$hv addr add 172.16.0.$hv/24 dev veth0
76 ip -netns hv-$hv link set veth0 up
78 ip -netns hv-$hv link add br0 type bridge
79 ip -netns hv-$hv link set br0 up
81 ip -netns hv-$hv link add vxlan0 type vxlan id 10 local 172.16.0.$hv dev veth0 dstport 4789
82 ip -netns hv-$hv link set vxlan0 master br0
83 ip -netns hv-$hv link set vxlan0 up
88 # Check connectivity between HVs by pinging hv-2 from hv-1
89 echo -n "Checking HV connectivity "
90 ip netns exec hv-1 ping -c 1 -W 1 172.16.0.2 &> /dev/null || (echo "[FAIL]"; false)
93 # Setups a "VM" simulated by a netns an a veth pair
98 ip link add veth-tap type veth peer name veth-hv
100 ip link set veth-tap netns hv-$id
101 ip -netns hv-$id link set veth-tap master br0
102 ip -netns hv-$id link set veth-tap up
104 ip link set veth-hv address 02:1d:8d:dd:0c:6$id
106 ip link set veth-hv netns vm-$id
107 ip -netns vm-$id addr add 10.0.0.$id/24 dev veth-hv
108 ip -netns vm-$id link set veth-hv up
113 # Setup VTEP routes to make ARP work
114 bridge -netns hv-1 fdb add 00:00:00:00:00:00 dev vxlan0 dst 172.16.0.2 self permanent
115 bridge -netns hv-2 fdb add 00:00:00:00:00:00 dev vxlan0 dst 172.16.0.1 self permanent
117 echo -n "Check VM connectivity through VXLAN (underlay in the default VRF) "
118 ip netns exec vm-1 ping -c 1 -W 1 10.0.0.2 &> /dev/null || (echo "[FAIL]"; false)
121 # Move the underlay to a non-default VRF
122 ip -netns hv-1 link set veth0 vrf vrf-underlay
123 ip -netns hv-1 link set vxlan0 down
124 ip -netns hv-1 link set vxlan0 up
125 ip -netns hv-2 link set veth0 vrf vrf-underlay
126 ip -netns hv-2 link set vxlan0 down
127 ip -netns hv-2 link set vxlan0 up
129 echo -n "Check VM connectivity through VXLAN (underlay in a VRF) "
130 ip netns exec vm-1 ping -c 1 -W 1 10.0.0.2 &> /dev/null || (echo "[FAIL]"; false)