FM / forwarding

/usr/src/linux-headers-5.15.0-190/tools/testing/selftests/net/forwarding/

/usr/src/linux-headers-5.15.0-190/tools/testing/selftests/net/forwarding

Name	Size	Mode	Actions
bridge_igmp.sh	15152	0755	edit dl rm
bridge_mld.sh	16563	0755	edit dl rm
bridge_port_isolation.sh	2378	0755	edit dl rm
bridge_sticky_fdb.sh	1159	0755	edit dl rm
bridge_vlan_aware.sh	2524	0755	edit dl rm
bridge_vlan_unaware.sh	1248	0755	edit dl rm
custom_multipath_hash.sh	9993	0755	edit dl rm
devlink_lib.sh	13118	0644	edit dl rm
dual_vxlan_bridge.sh	11439	0755	edit dl rm
ethtool.sh	6745	0755	edit dl rm
ethtool_extended_state.sh	1923	0755	edit dl rm
ethtool_lib.sh	2815	0644	edit dl rm
fib_offload_lib.sh	25157	0644	edit dl rm
gre_custom_multipath_hash.sh	12768	0755	edit dl rm
gre_inner_v4_multipath.sh	7730	0755	edit dl rm
gre_inner_v6_multipath.sh	7843	0755	edit dl rm
gre_multipath.sh	6439	0755	edit dl rm
gre_multipath_nh.sh	9301	0755	edit dl rm
gre_multipath_nh_res.sh	9491	0755	edit dl rm
ip6gre_custom_multipath_hash.sh	13038	0755	edit dl rm
ip6gre_inner_v4_multipath.sh	7956	0755	edit dl rm
ip6gre_inner_v6_multipath.sh	8069	0755	edit dl rm
ip6_forward_instats_vrf.sh	3092	0755	edit dl rm
ipip_flat_gre.sh	838	0755	edit dl rm
ipip_flat_gre_key.sh	860	0755	edit dl rm
ipip_flat_gre_keys.sh	886	0755	edit dl rm
ipip_hier_gre.sh	887	0755	edit dl rm
ipip_hier_gre_key.sh	910	0755	edit dl rm
ipip_hier_gre_keys.sh	938	0755	edit dl rm
ipip_lib.sh	8557	0644	edit dl rm
lib.sh	28668	0644	edit dl rm
loopback.sh	1589	0755	edit dl rm
Makefile	1718	0644	edit dl rm
mirror_gre.sh	3366	0755	edit dl rm
mirror_gre_bound.sh	5929	0755	edit dl rm
mirror_gre_bridge_1d.sh	4504	0755	edit dl rm
mirror_gre_bridge_1d_vlan.sh	2717	0755	edit dl rm
mirror_gre_bridge_1q.sh	4380	0755	edit dl rm
mirror_gre_bridge_1q_lag.sh	7485	0755	edit dl rm
mirror_gre_changes.sh	5824	0755	edit dl rm
mirror_gre_flower.sh	2891	0755	edit dl rm
mirror_gre_lag_lacp.sh	7458	0755	edit dl rm
mirror_gre_lib.sh	2565	0644	edit dl rm
mirror_gre_neigh.sh	2338	0755	edit dl rm
mirror_gre_nh.sh	2974	0755	edit dl rm
mirror_gre_topo_lib.sh	3524	0644	edit dl rm
mirror_gre_vlan.sh	1715	0755	edit dl rm
mirror_gre_vlan_bridge_1q.sh	9117	0755	edit dl rm
mirror_lib.sh	2964	0644	edit dl rm
mirror_topo_lib.sh	2758	0644	edit dl rm
mirror_vlan.sh	2303	0755	edit dl rm
pedit_dsfield.sh	6789	0755	edit dl rm
pedit_l4port.sh	4564	0755	edit dl rm
q_in_vni.sh	10926	0755	edit dl rm
router.sh	6322	0755	edit dl rm
router_bridge.sh	1794	0755	edit dl rm
router_bridge_vlan.sh	2108	0755	edit dl rm
router_broadcast.sh	5142	0755	edit dl rm
router_mpath_nh.sh	9828	0755	edit dl rm
router_mpath_nh_res.sh	10223	0755	edit dl rm
router_multicast.sh	11597	0755	edit dl rm
router_multipath.sh	8449	0755	edit dl rm
router_nh.sh	2627	0755	edit dl rm
router_vid_1.sh	2153	0755	edit dl rm
sch_ets.sh	781	0755	edit dl rm
sch_ets_core.sh	7456	0644	edit dl rm
sch_ets_tests.sh	4044	0644	edit dl rm
sch_red.sh	11358	0755	edit dl rm
sch_tbf_core.sh	5140	0644	edit dl rm
sch_tbf_ets.sh	118	0755	edit dl rm
sch_tbf_etsprio.sh	711	0644	edit dl rm
sch_tbf_prio.sh	118	0755	edit dl rm
sch_tbf_root.sh	422	0755	edit dl rm
skbedit_priority.sh	3901	0755	edit dl rm
tc_actions.sh	6606	0755	edit dl rm
tc_chains.sh	4945	0755	edit dl rm
tc_common.sh	524	0644	edit dl rm
tc_flower.sh	21752	0755	edit dl rm
tc_flower_router.sh	3096	0755	edit dl rm
tc_mpls_l2vpn.sh	5146	0755	edit dl rm
tc_police.sh	12111	0755	edit dl rm
tc_shblocks.sh	2748	0755	edit dl rm
tc_vlan_modify.sh	3246	0755	edit dl rm
vxlan_asymmetric.sh	17978	0755	edit dl rm
vxlan_bridge_1d.sh	21064	0755	edit dl rm
vxlan_bridge_1d_port_8472.sh	172	0755	edit dl rm
vxlan_bridge_1q.sh	24053	0755	edit dl rm
vxlan_bridge_1q_port_8472.sh	172	0755	edit dl rm
vxlan_symmetric.sh	18488	0755	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/tools/testing/selftests/net/forwarding/router_broadcast.sh (5142B)

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

ALL_TESTS="ping_ipv4"
NUM_NETIFS=6
source lib.sh

h1_create()
{
	vrf_create "vrf-h1"
	ip link set dev $h1 master vrf-h1

ip link set dev vrf-h1 up
	ip link set dev $h1 up

ip address add 192.0.2.2/24 dev $h1

ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
	ip route add 198.51.200.0/24 vrf vrf-h1 nexthop via 192.0.2.1
}

h1_destroy()
{
	ip route del 198.51.200.0/24 vrf vrf-h1
	ip route del 198.51.100.0/24 vrf vrf-h1

ip address del 192.0.2.2/24 dev $h1

ip link set dev $h1 down
	vrf_destroy "vrf-h1"
}

h2_create()
{
	vrf_create "vrf-h2"
	ip link set dev $h2 master vrf-h2

ip link set dev vrf-h2 up
	ip link set dev $h2 up

ip address add 198.51.100.2/24 dev $h2

ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
	ip route add 198.51.200.0/24 vrf vrf-h2 nexthop via 198.51.100.1
}

h2_destroy()
{
	ip route del 198.51.200.0/24 vrf vrf-h2
	ip route del 192.0.2.0/24 vrf vrf-h2

ip address del 198.51.100.2/24 dev $h2

ip link set dev $h2 down
	vrf_destroy "vrf-h2"
}

h3_create()
{
	vrf_create "vrf-h3"
	ip link set dev $h3 master vrf-h3

ip link set dev vrf-h3 up
	ip link set dev $h3 up

ip address add 198.51.200.2/24 dev $h3

ip route add 192.0.2.0/24 vrf vrf-h3 nexthop via 198.51.200.1
	ip route add 198.51.100.0/24 vrf vrf-h3 nexthop via 198.51.200.1
}

h3_destroy()
{
	ip route del 198.51.100.0/24 vrf vrf-h3
	ip route del 192.0.2.0/24 vrf vrf-h3

ip address del 198.51.200.2/24 dev $h3

ip link set dev $h3 down
	vrf_destroy "vrf-h3"
}

router_create()
{
	ip link set dev $rp1 up
	ip link set dev $rp2 up
	ip link set dev $rp3 up

ip address add 192.0.2.1/24 dev $rp1

ip address add 198.51.100.1/24 dev $rp2
	ip address add 198.51.200.1/24 dev $rp3
}

router_destroy()
{
	ip address del 198.51.200.1/24 dev $rp3
	ip address del 198.51.100.1/24 dev $rp2

ip address del 192.0.2.1/24 dev $rp1

ip link set dev $rp3 down
	ip link set dev $rp2 down
	ip link set dev $rp1 down
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	rp1=${NETIFS[p2]}

rp2=${NETIFS[p3]}
	h2=${NETIFS[p4]}

rp3=${NETIFS[p5]}
	h3=${NETIFS[p6]}

vrf_prepare

h1_create
	h2_create
	h3_create

router_create

forwarding_enable
}

cleanup()
{
	pre_cleanup

forwarding_restore

router_destroy

h3_destroy
	h2_destroy
	h1_destroy

vrf_cleanup
}

bc_forwarding_disable()
{
	sysctl_set net.ipv4.conf.all.bc_forwarding 0
	sysctl_set net.ipv4.conf.$rp1.bc_forwarding 0
	sysctl_set net.ipv4.conf.$rp2.bc_forwarding 0
}

bc_forwarding_enable()
{
	sysctl_set net.ipv4.conf.all.bc_forwarding 1
	sysctl_set net.ipv4.conf.$rp1.bc_forwarding 1
	sysctl_set net.ipv4.conf.$rp2.bc_forwarding 1
}

bc_forwarding_restore()
{
	sysctl_restore net.ipv4.conf.$rp2.bc_forwarding
	sysctl_restore net.ipv4.conf.$rp1.bc_forwarding
	sysctl_restore net.ipv4.conf.all.bc_forwarding
}

ping_test_from()
{
	local oif=$1
	local dip=$2
	local from=$3
	local fail=${4:-0}

RET=0

log_info "ping $dip, expected reply from $from"
	ip vrf exec $(master_name_get $oif) \
		$PING -I $oif $dip -c 10 -i 0.1 -w $PING_TIMEOUT -b 2>&1 \
		| grep "bytes from $from" > /dev/null
	check_err_fail $fail $?
}

ping_ipv4()
{
	sysctl_set net.ipv4.icmp_echo_ignore_broadcasts 0

bc_forwarding_disable
	log_info "bc_forwarding disabled on r1 =>"
	ping_test_from $h1 198.51.100.255 192.0.2.1
	log_test "h1 -> net2: reply from r1 (not forwarding)"
	ping_test_from $h1 198.51.200.255 192.0.2.1
	log_test "h1 -> net3: reply from r1 (not forwarding)"
	ping_test_from $h1 192.0.2.255 192.0.2.1
	log_test "h1 -> net1: reply from r1 (not dropping)"
	ping_test_from $h1 255.255.255.255 192.0.2.1
	log_test "h1 -> 255.255.255.255: reply from r1 (not forwarding)"

ping_test_from $h2 192.0.2.255 198.51.100.1
	log_test "h2 -> net1: reply from r1 (not forwarding)"
	ping_test_from $h2 198.51.200.255 198.51.100.1
	log_test "h2 -> net3: reply from r1 (not forwarding)"
	ping_test_from $h2 198.51.100.255 198.51.100.1
	log_test "h2 -> net2: reply from r1 (not dropping)"
	ping_test_from $h2 255.255.255.255 198.51.100.1
	log_test "h2 -> 255.255.255.255: reply from r1 (not forwarding)"
	bc_forwarding_restore

bc_forwarding_enable
	log_info "bc_forwarding enabled on r1 =>"
	ping_test_from $h1 198.51.100.255 198.51.100.2
	log_test "h1 -> net2: reply from h2 (forwarding)"
	ping_test_from $h1 198.51.200.255 198.51.200.2
	log_test "h1 -> net3: reply from h3 (forwarding)"
	ping_test_from $h1 192.0.2.255 192.0.2.1 1
	log_test "h1 -> net1: no reply (dropping)"
	ping_test_from $h1 255.255.255.255 192.0.2.1
	log_test "h1 -> 255.255.255.255: reply from r1 (not forwarding)"

ping_test_from $h2 192.0.2.255 192.0.2.2
	log_test "h2 -> net1: reply from h1 (forwarding)"
	ping_test_from $h2 198.51.200.255 198.51.200.2
	log_test "h2 -> net3: reply from h3 (forwarding)"
	ping_test_from $h2 198.51.100.255 198.51.100.1 1
	log_test "h2 -> net2: no reply (dropping)"
	ping_test_from $h2 255.255.255.255 198.51.100.1
	log_test "h2 -> 255.255.255.255: reply from r1 (not forwarding)"
	bc_forwarding_restore

sysctl_restore net.ipv4.icmp_echo_ignore_broadcasts
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS

cmd: