[PATCH net-next 5/9] selftests/net: convert test_vxlan_under_vrf.sh to run it in unique namespace

Hangbin Liu
2023-12-06T07:08:32Z

Here is the test result after conversion.

]# ./test_vxlan_under_vrf.sh
Checking HV connectivity [ OK ]
Check VM connectivity through VXLAN (underlay in the default VRF) [ OK ]
Check VM connectivity through VXLAN (underlay in a VRF) [ OK ]

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
.../selftests/net/test_vxlan_under_vrf.sh | 70 ++++++++++---------
1 file changed, 36 insertions(+), 34 deletions(-)

diff --git a/tools/testing/selftests/net/test_vxlan_under_vrf.sh b/tools/testing/selftests/net/test_vxlan_under_vrf.sh
index 1fd1250ebc66..ae8fbe3f0779 100755
--- a/tools/testing/selftests/net/test_vxlan_under_vrf.sh
+++ b/tools/testing/selftests/net/test_vxlan_under_vrf.sh
@@ -43,15 +43,14 @@
# 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.

+source lib.sh
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 2>/dev/null || true
- done
+ cleanup_ns $hv_1 $hv_2 $vm_1 $vm_2
}

# Clean start
@@ -60,72 +59,75 @@ cleanup &> /dev/null
[[ $1 == "clean" ]] && exit 0

trap cleanup EXIT
+setup_ns hv_1 hv_2 vm_1 vm_2
+hv[1]=$hv_1
+hv[2]=$hv_2
+vm[1]=$vm_1
+vm[2]=$vm_2

# Setup "Hypervisors" simulated with netns
ip link add veth-hv-1 type veth peer name veth-hv-2
setup-hv-networking() {
- hv=$1
+ id=$1

- ip netns add hv-$hv
- ip link set veth-hv-$hv netns hv-$hv
- ip -netns hv-$hv link set veth-hv-$hv name veth0
+ ip link set veth-hv-$id netns ${hv[$id]}
+ ip -netns ${hv[$id]} link set veth-hv-$id 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 ${hv[$id]} link add vrf-underlay type vrf table 1
+ ip -netns ${hv[$id]} link set vrf-underlay up
+ ip -netns ${hv[$id]} addr add 172.16.0.$id/24 dev veth0
+ ip -netns ${hv[$id]} link set veth0 up

- ip -netns hv-$hv link add br0 type bridge
- ip -netns hv-$hv link set br0 up
+ ip -netns ${hv[$id]} link add br0 type bridge
+ ip -netns ${hv[$id]} 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
+ ip -netns ${hv[$id]} link add vxlan0 type vxlan id 10 local 172.16.0.$id dev veth0 dstport 4789
+ ip -netns ${hv[$id]} link set vxlan0 master br0
+ ip -netns ${hv[$id]} 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)
+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-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 address 02:1d:8d:dd:0c:6$id

- 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
+ 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
+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)
+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 vxlan0 down
-ip -netns hv-1 link set vxlan0 up
-ip -netns hv-2 link set veth0 vrf vrf-underlay
-ip -netns hv-2 link set vxlan0 down
-ip -netns hv-2 link set vxlan0 up
+ip -netns $hv_1 link set veth0 vrf vrf-underlay
+ip -netns $hv_1 link set vxlan0 down
+ip -netns $hv_1 link set vxlan0 up
+ip -netns $hv_2 link set veth0 vrf vrf-underlay
+ip -netns $hv_2 link set vxlan0 down
+ip -netns $hv_2 link set vxlan0 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)
+ip netns exec $vm_1 ping -c 1 -W 1 10.0.0.2 &> /dev/null || (echo "[FAIL]"; false)
echo "[ OK ]"
--
2.43.0