| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| # This test is for checking VXLAN underlay in a non-default VRF. |
| # |
| # It simulates two hypervisors running a VM each using four network namespaces: |
| # two for the HVs, two for the VMs. |
| # A small VXLAN tunnel is made between the two hypervisors to have the two vms |
| # in the same virtual L2: |
| # |
| # +-------------------+ +-------------------+ |
| # | | | | |
| # | vm-1 netns | | vm-2 netns | |
| # | | | | |
| # | +-------------+ | | +-------------+ | |
| # | | veth-hv | | | | veth-hv | | |
| # | | 10.0.0.1/24 | | | | 10.0.0.2/24 | | |
| # | +-------------+ | | +-------------+ | |
| # | . | | . | |
| # +-------------------+ +-------------------+ |
| # . . |
| # . . |
| # . . |
| # +-----------------------------------+ +------------------------------------+ |
| # | . | | . | |
| # | +----------+ | | +----------+ | |
| # | | veth-tap | | | | veth-tap | | |
| # | +----+-----+ | | +----+-----+ | |
| # | | | | | | |
| # | +--+--+ +--------------+ | | +--------------+ +--+--+ | |
| # | | br0 | | vrf-underlay | | | | vrf-underlay | | br0 | | |
| # | +--+--+ +-------+------+ | | +------+-------+ +--+--+ | |
| # | | | | | | | | |
| # | +---+----+ +-------+-------+ | | +-------+-------+ +---+----+ | |
| # | | vxlan0 |....| veth0 |.|...|.| veth0 |....| vxlan0 | | |
| # | +--------+ | 172.16.0.1/24 | | | | 172.16.0.2/24 | +--------+ | |
| # | +---------------+ | | +---------------+ | |
| # | | | | |
| # | hv-1 netns | | hv-2 netns | |
| # | | | | |
| # +-----------------------------------+ +------------------------------------+ |
| # |
| # This tests both the connectivity between vm-1 and vm-2, and that the underlay |
| # can be moved in and out of the vrf by unsetting and setting veth0's master. |
| |
| set -e |
| |
| cleanup() { |
| ip link del veth-hv-1 2>/dev/null || true |
| ip link del veth-tap 2>/dev/null || true |
| |
| for ns in hv-1 hv-2 vm-1 vm-2; do |
| ip netns del $ns || true |
| done |
| } |
| |
| # Clean start |
| cleanup &> /dev/null |
| |
| [[ $1 == "clean" ]] && exit 0 |
| |
| trap cleanup EXIT |
| |
| # Setup "Hypervisors" simulated with netns |
| ip link add veth-hv-1 type veth peer name veth-hv-2 |
| setup-hv-networking() { |
| hv=$1 |
| |
| ip netns add hv-$hv |
| ip link set veth-hv-$hv netns hv-$hv |
| ip -netns hv-$hv link set veth-hv-$hv name veth0 |
| |
| ip -netns hv-$hv link add vrf-underlay type vrf table 1 |
| ip -netns hv-$hv link set vrf-underlay up |
| ip -netns hv-$hv addr add 172.16.0.$hv/24 dev veth0 |
| ip -netns hv-$hv link set veth0 up |
| |
| ip -netns hv-$hv link add br0 type bridge |
| ip -netns hv-$hv link set br0 up |
| |
| ip -netns hv-$hv link add vxlan0 type vxlan id 10 local 172.16.0.$hv dev veth0 dstport 4789 |
| ip -netns hv-$hv link set vxlan0 master br0 |
| ip -netns hv-$hv link set vxlan0 up |
| } |
| setup-hv-networking 1 |
| setup-hv-networking 2 |
| |
| # Check connectivity between HVs by pinging hv-2 from hv-1 |
| echo -n "Checking HV connectivity " |
| ip netns exec hv-1 ping -c 1 -W 1 172.16.0.2 &> /dev/null || (echo "[FAIL]"; false) |
| echo "[ OK ]" |
| |
| # Setups a "VM" simulated by a netns an a veth pair |
| setup-vm() { |
| id=$1 |
| |
| ip netns add vm-$id |
| ip link add veth-tap type veth peer name veth-hv |
| |
| ip link set veth-tap netns hv-$id |
| ip -netns hv-$id link set veth-tap master br0 |
| ip -netns hv-$id link set veth-tap up |
| |
| ip link set veth-hv netns vm-$id |
| ip -netns vm-$id addr add 10.0.0.$id/24 dev veth-hv |
| ip -netns vm-$id link set veth-hv up |
| } |
| setup-vm 1 |
| setup-vm 2 |
| |
| # Setup VTEP routes to make ARP work |
| bridge -netns hv-1 fdb add 00:00:00:00:00:00 dev vxlan0 dst 172.16.0.2 self permanent |
| bridge -netns hv-2 fdb add 00:00:00:00:00:00 dev vxlan0 dst 172.16.0.1 self permanent |
| |
| echo -n "Check VM connectivity through VXLAN (underlay in the default VRF) " |
| ip netns exec vm-1 ping -c 1 -W 1 10.0.0.2 &> /dev/null || (echo "[FAIL]"; false) |
| echo "[ OK ]" |
| |
| # Move the underlay to a non-default VRF |
| ip -netns hv-1 link set veth0 vrf vrf-underlay |
| ip -netns hv-1 link set veth0 down |
| ip -netns hv-1 link set veth0 up |
| ip -netns hv-2 link set veth0 vrf vrf-underlay |
| ip -netns hv-2 link set veth0 down |
| ip -netns hv-2 link set veth0 up |
| |
| echo -n "Check VM connectivity through VXLAN (underlay in a VRF) " |
| ip netns exec vm-1 ping -c 1 -W 1 10.0.0.2 &> /dev/null || (echo "[FAIL]"; false) |
| echo "[ OK ]" |
