linux_kernel/tools/testing/selftests/net/forwarding/router_bridge.sh

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

ALL_TESTS="
	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 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
}

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
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS