#!/bin/bash

rnd=$(mktemp -u XXXXXXXX)
ns1="nft1ifname-$rnd"
ns2="nft2ifname-$rnd"

cleanup()
{
	ip netns del "$ns1"
	ip netns del "$ns2"
}

trap cleanup EXIT

set -e

ip netns add "$ns1"
ip netns add "$ns2"
ip -net "$ns1" link set lo up
ip -net "$ns2" link set lo up

ip link add veth0 netns $ns1 type veth peer name veth0 netns $ns2

ip -net "$ns1" link set veth0 addr da:d3:00:01:02:03

ip -net "$ns1" link add link veth0 name vlan10 type vlan proto 802.1ad id 10
ip -net "$ns1" link add link vlan10 name vlan10.100 type vlan proto 802.1q id 100

ip -net "$ns2" link add link veth0 name vlan10 type vlan proto 802.1ad id 10
ip -net "$ns2" link add link vlan10 name vlan10.100 type vlan proto 802.1q id 100

for dev in veth0 vlan10 vlan10.100; do
	ip -net "$ns1" link set $dev up
	ip -net "$ns2" link set $dev up
done

ip -net "$ns1" addr add 10.1.1.1/24 dev vlan10.100
ip -net "$ns2" addr add 10.1.1.2/24 dev vlan10.100

ip netns exec "$ns2" $NFT -f /dev/stdin <<"EOF"
table netdev t {
	chain c1 {
		type filter hook ingress device veth0 priority filter;
		ether type 8021ad vlan id 10 vlan type 8021q vlan id 100 vlan type ip counter
	}

	chain c2 {
		type filter hook ingress device vlan10 priority filter;
		vlan id 100 ip daddr 10.1.1.2 counter
	}

	chain c3 {
		type filter hook ingress device vlan10.100 priority filter;
		ip daddr 10.1.1.2 counter
	}
}
EOF

ip netns exec "$ns1" ping -c 1 10.1.1.2
ip netns exec "$ns2" $NFT list ruleset

set +e

ip netns exec "$ns2" $NFT list chain netdev t c1 | grep 'counter packets 0 bytes 0'
[[ $? -eq 0 ]] && exit 1

ip netns exec "$ns2" $NFT list chain netdev t c2 | grep 'counter packets 0 bytes 0'
[[ $? -eq 0 ]] && exit 1

ip netns exec "$ns2" $NFT list chain netdev t c3 | grep 'counter packets 0 bytes 0'
[[ $? -eq 0 ]] && exit 1

exit 0