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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# +------------------------+                           +----------------------+
# | H1 (vrf)               |                           |             H2 (vrf) |
# |    + $h1               |                           |  + $h2               |
# |    | 192.0.2.1/28      |                           |  | 192.0.2.130/28    |
# |    | 2001:db8:1::1/64  |                           |  | 2001:db8:2::2/64  |
# |    |                   |                           |  |                   |
# +----|-------------------+                           +--|-------------------+
#      |                                                  |
# +----|--------------------------------------------------|-------------------+
# | SW |                                                  |                   |
# | +--|-----------------------------+                    + $swp2             |
# | |  + $swp1      BR1 (802.1q)     |                      192.0.2.129/28    |
# | |               192.0.2.2/28     |                      2001:db8:2::1/64  |
# | |               2001:db8:1::1/64 |                                        |
# | |                                |                                        |
# | +--------------------------------+                                        |
# +---------------------------------------------------------------------------+

ALL_TESTS="
	ping_ipv4
	ping_ipv6
	config_remaster
	ping_ipv4
	ping_ipv6
	config_remove_pvid
	ping_ipv4_fails
	ping_ipv6_fails
	config_add_pvid
	ping_ipv4
	ping_ipv6
	config_late_pvid
	ping_ipv4
	ping_ipv6
"
NUM_NETIFS=4
source lib.sh

h1_create()
{
	simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64
	ip -4 route add 192.0.2.128/28 vrf v$h1 nexthop via 192.0.2.2
	ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2
}

h1_destroy()
{
	ip -6 route del 2001:db8:2::/64 vrf v$h1
	ip -4 route del 192.0.2.128/28 vrf v$h1
	simple_if_fini $h1 192.0.2.1/28 2001:db8:1::1/64
}

h2_create()
{
	simple_if_init $h2 192.0.2.130/28 2001:db8:2::2/64
	ip -4 route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.129
	ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1
}

h2_destroy()
{
	ip -6 route del 2001:db8:1::/64 vrf v$h2
	ip -4 route del 192.0.2.0/28 vrf v$h2
	simple_if_fini $h2 192.0.2.130/28 2001:db8:2::2/64
}

router_create()
{
	ip link add name br1 address $(mac_get $swp1) \
		type bridge vlan_filtering 1
	ip link set dev br1 up

	ip link set dev $swp1 master br1
	ip link set dev $swp1 up
	__addr_add_del br1 add 192.0.2.2/28 2001:db8:1::2/64

	ip link set dev $swp2 up
	__addr_add_del $swp2 add 192.0.2.129/28 2001:db8:2::1/64
}

router_destroy()
{
	__addr_add_del $swp2 del 192.0.2.129/28 2001:db8:2::1/64
	ip link set dev $swp2 down

	__addr_add_del br1 del 192.0.2.2/28 2001:db8:1::2/64
	ip link set dev $swp1 down
	ip link set dev $swp1 nomaster

	ip link del dev br1
}

config_remaster()
{
	log_info "Remaster bridge slave"

	ip link set dev $swp1 nomaster
	sleep 2
	ip link set dev $swp1 master br1
}

config_remove_pvid()
{
	log_info "Remove PVID from the bridge"

	bridge vlan add dev br1 vid 1 self
	sleep 2
}

config_add_pvid()
{
	log_info "Add PVID to the bridge"

	bridge vlan add dev br1 vid 1 self pvid untagged
	sleep 2
}

config_late_pvid()
{
	log_info "Add bridge PVID after enslaving port"

	ip link set dev $swp1 nomaster
	ip link set dev br1 type bridge vlan_default_pvid 0
	sleep 2
	ip link set dev $swp1 master br1
	ip link set dev br1 type bridge vlan_default_pvid 1
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	swp1=${NETIFS[p2]}

	swp2=${NETIFS[p3]}
	h2=${NETIFS[p4]}

	vrf_prepare

	h1_create
	h2_create

	router_create

	forwarding_enable
}

cleanup()
{
	pre_cleanup

	forwarding_restore

	router_destroy

	h2_destroy
	h1_destroy

	vrf_cleanup
}

ping_ipv4()
{
	ping_test $h1 192.0.2.130
}

ping_ipv6()
{
	ping6_test $h1 2001:db8:2::2
}

ping_ipv4_fails()
{
	ping_test_fails $h1 192.0.2.130
}

ping_ipv6_fails()
{
	ping6_test_fails $h1 2001:db8:2::2
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS