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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
source lib.sh
if ! modprobe -q -n br_netfilter 2>&1; then
echo "SKIP: Test needs br_netfilter kernel module"
exit $ksft_skip
fi
cleanup()
{
cleanup_all_ns
}
trap cleanup EXIT
setup_ns host vtep router
create_topology()
{
ip link add host-eth0 netns "$host" type veth peer name vtep-host netns "$vtep"
ip link add vtep-router netns "$vtep" type veth peer name router-vtep netns "$router"
}
setup_host()
{
# bring ports up
ip -n "$host" addr add 10.0.0.1/24 dev host-eth0
ip -n "$host" link set host-eth0 up
# Add VLAN 10,20
for vid in 10 20; do
ip -n "$host" link add link host-eth0 name host-eth0.$vid type vlan id $vid
ip -n "$host" addr add 10.0.$vid.1/24 dev host-eth0.$vid
ip -n "$host" link set host-eth0.$vid up
done
}
setup_vtep()
{
# create bridge on vtep
ip -n "$vtep" link add name br0 type bridge
ip -n "$vtep" link set br0 type bridge vlan_filtering 1
# VLAN 10 is untagged PVID
ip -n "$vtep" link set dev vtep-host master br0
bridge -n "$vtep" vlan add dev vtep-host vid 10 pvid untagged
# VLAN 20 as other VID
ip -n "$vtep" link set dev vtep-host master br0
bridge -n "$vtep" vlan add dev vtep-host vid 20
# single-vxlan device on vtep
ip -n "$vtep" address add dev vtep-router 60.0.0.1/24
ip -n "$vtep" link add dev vxd type vxlan external \
vnifilter local 60.0.0.1 remote 60.0.0.2 dstport 4789 ttl 64
ip -n "$vtep" link set vxd master br0
# Add VLAN-VNI 1-1 mappings
bridge -n "$vtep" link set dev vxd vlan_tunnel on
for vid in 10 20; do
bridge -n "$vtep" vlan add dev vxd vid $vid
bridge -n "$vtep" vlan add dev vxd vid $vid tunnel_info id $vid
bridge -n "$vtep" vni add dev vxd vni $vid
done
# bring ports up
ip -n "$vtep" link set vxd up
ip -n "$vtep" link set vtep-router up
ip -n "$vtep" link set vtep-host up
ip -n "$vtep" link set dev br0 up
}
setup_router()
{
# bring ports up
ip -n "$router" link set router-vtep up
}
setup()
{
modprobe -q br_netfilter
create_topology
setup_host
setup_vtep
setup_router
}
test_large_mtu_untagged_traffic()
{
ip -n "$vtep" link set vxd mtu 1000
ip -n "$host" neigh add 10.0.0.2 lladdr ca:fe:ba:be:00:01 dev host-eth0
ip netns exec "$host" \
ping -q 10.0.0.2 -I host-eth0 -c 1 -W 0.5 -s2000 > /dev/null 2>&1
return 0
}
test_large_mtu_tagged_traffic()
{
for vid in 10 20; do
ip -n "$vtep" link set vxd mtu 1000
ip -n "$host" neigh add 10.0.$vid.2 lladdr ca:fe:ba:be:00:01 dev host-eth0.$vid
ip netns exec "$host" \
ping -q 10.0.$vid.2 -I host-eth0.$vid -c 1 -W 0.5 -s2000 > /dev/null 2>&1
done
return 0
}
do_test()
{
# Frames will be dropped so ping will not succeed
# If it doesn't panic, it passes
test_large_mtu_tagged_traffic
test_large_mtu_untagged_traffic
}
setup && \
echo "Test for VxLAN fragmentation with large MTU in br_netfilter:" && \
do_test && echo "PASS!"
exit $?
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