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_multipath.sh (8449B)

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

ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test"
NUM_NETIFS=8
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 address add 2001:db8:1::2/64 dev $h1

ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
	ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
}

h1_destroy()
{
	ip route del 2001:db8:2::/64 vrf vrf-h1
	ip route del 198.51.100.0/24 vrf vrf-h1

ip address del 2001:db8:1::2/64 dev $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 address add 2001:db8:2::2/64 dev $h2

ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
	ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
}

h2_destroy()
{
	ip route del 2001:db8:1::/64 vrf vrf-h2
	ip route del 192.0.2.0/24 vrf vrf-h2

ip address del 2001:db8:2::2/64 dev $h2
	ip address del 198.51.100.2/24 dev $h2

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

router1_create()
{
	vrf_create "vrf-r1"
	ip link set dev $rp11 master vrf-r1
	ip link set dev $rp12 master vrf-r1
	ip link set dev $rp13 master vrf-r1

ip link set dev vrf-r1 up
	ip link set dev $rp11 up
	ip link set dev $rp12 up
	ip link set dev $rp13 up

ip address add 192.0.2.1/24 dev $rp11
	ip address add 2001:db8:1::1/64 dev $rp11

ip address add 169.254.2.12/24 dev $rp12
	ip address add fe80:2::12/64 dev $rp12

ip address add 169.254.3.13/24 dev $rp13
	ip address add fe80:3::13/64 dev $rp13

ip route add 198.51.100.0/24 vrf vrf-r1 \
		nexthop via 169.254.2.22 dev $rp12 \
		nexthop via 169.254.3.23 dev $rp13
	ip route add 2001:db8:2::/64 vrf vrf-r1 \
		nexthop via fe80:2::22 dev $rp12 \
		nexthop via fe80:3::23 dev $rp13
}

router1_destroy()
{
	ip route del 2001:db8:2::/64 vrf vrf-r1
	ip route del 198.51.100.0/24 vrf vrf-r1

ip address del fe80:3::13/64 dev $rp13
	ip address del 169.254.3.13/24 dev $rp13

ip address del fe80:2::12/64 dev $rp12
	ip address del 169.254.2.12/24 dev $rp12

ip address del 2001:db8:1::1/64 dev $rp11
	ip address del 192.0.2.1/24 dev $rp11

ip link set dev $rp13 down
	ip link set dev $rp12 down
	ip link set dev $rp11 down

vrf_destroy "vrf-r1"
}

router2_create()
{
	vrf_create "vrf-r2"
	ip link set dev $rp21 master vrf-r2
	ip link set dev $rp22 master vrf-r2
	ip link set dev $rp23 master vrf-r2

ip link set dev vrf-r2 up
	ip link set dev $rp21 up
	ip link set dev $rp22 up
	ip link set dev $rp23 up

ip address add 198.51.100.1/24 dev $rp21
	ip address add 2001:db8:2::1/64 dev $rp21

ip address add 169.254.2.22/24 dev $rp22
	ip address add fe80:2::22/64 dev $rp22

ip address add 169.254.3.23/24 dev $rp23
	ip address add fe80:3::23/64 dev $rp23

ip route add 192.0.2.0/24 vrf vrf-r2 \
		nexthop via 169.254.2.12 dev $rp22 \
		nexthop via 169.254.3.13 dev $rp23
	ip route add 2001:db8:1::/64 vrf vrf-r2 \
		nexthop via fe80:2::12 dev $rp22 \
		nexthop via fe80:3::13 dev $rp23
}

router2_destroy()
{
	ip route del 2001:db8:1::/64 vrf vrf-r2
	ip route del 192.0.2.0/24 vrf vrf-r2

ip address del fe80:3::23/64 dev $rp23
	ip address del 169.254.3.23/24 dev $rp23

ip address del fe80:2::22/64 dev $rp22
	ip address del 169.254.2.22/24 dev $rp22

ip address del 2001:db8:2::1/64 dev $rp21
	ip address del 198.51.100.1/24 dev $rp21

ip link set dev $rp23 down
	ip link set dev $rp22 down
	ip link set dev $rp21 down

vrf_destroy "vrf-r2"
}

multipath4_test()
{
       local desc="$1"
       local weight_rp12=$2
       local weight_rp13=$3
       local t0_rp12 t0_rp13 t1_rp12 t1_rp13
       local packets_rp12 packets_rp13

# Transmit multiple flows from h1 to h2 and make sure they are
       # distributed between both multipath links (rp12 and rp13)
       # according to the configured weights.
       sysctl_set net.ipv4.fib_multipath_hash_policy 1
       ip route replace 198.51.100.0/24 vrf vrf-r1 \
               nexthop via 169.254.2.22 dev $rp12 weight $weight_rp12 \
               nexthop via 169.254.3.23 dev $rp13 weight $weight_rp13

t0_rp12=$(link_stats_tx_packets_get $rp12)
       t0_rp13=$(link_stats_tx_packets_get $rp13)

ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
	       -d 1msec -t udp "sp=1024,dp=0-32768"

t1_rp12=$(link_stats_tx_packets_get $rp12)
       t1_rp13=$(link_stats_tx_packets_get $rp13)

let "packets_rp12 = $t1_rp12 - $t0_rp12"
       let "packets_rp13 = $t1_rp13 - $t0_rp13"
       multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13

# Restore settings.
       ip route replace 198.51.100.0/24 vrf vrf-r1 \
               nexthop via 169.254.2.22 dev $rp12 \
               nexthop via 169.254.3.23 dev $rp13
       sysctl_restore net.ipv4.fib_multipath_hash_policy
}

multipath6_l4_test()
{
       local desc="$1"
       local weight_rp12=$2
       local weight_rp13=$3
       local t0_rp12 t0_rp13 t1_rp12 t1_rp13
       local packets_rp12 packets_rp13

ip route replace 2001:db8:2::/64 vrf vrf-r1 \
	       nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
	       nexthop via fe80:3::23 dev $rp13 weight $weight_rp13

t0_rp12=$(link_stats_tx_packets_get $rp12)
       t0_rp13=$(link_stats_tx_packets_get $rp13)

$MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
	       -d 1msec -t udp "sp=1024,dp=0-32768"

t1_rp12=$(link_stats_tx_packets_get $rp12)
       t1_rp13=$(link_stats_tx_packets_get $rp13)

let "packets_rp12 = $t1_rp12 - $t0_rp12"
       let "packets_rp13 = $t1_rp13 - $t0_rp13"
       multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13

ip route replace 2001:db8:2::/64 vrf vrf-r1 \
	       nexthop via fe80:2::22 dev $rp12 \
	       nexthop via fe80:3::23 dev $rp13

sysctl_restore net.ipv6.fib_multipath_hash_policy
}

multipath6_test()
{
       local desc="$1"
       local weight_rp12=$2
       local weight_rp13=$3
       local t0_rp12 t0_rp13 t1_rp12 t1_rp13
       local packets_rp12 packets_rp13

ip route replace 2001:db8:2::/64 vrf vrf-r1 \
	       nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
	       nexthop via fe80:3::23 dev $rp13 weight $weight_rp13

t0_rp12=$(link_stats_tx_packets_get $rp12)
       t0_rp13=$(link_stats_tx_packets_get $rp13)

# Generate 16384 echo requests, each with a random flow label.
       for _ in $(seq 1 16384); do
	       ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
       done

t1_rp12=$(link_stats_tx_packets_get $rp12)
       t1_rp13=$(link_stats_tx_packets_get $rp13)

let "packets_rp12 = $t1_rp12 - $t0_rp12"
       let "packets_rp13 = $t1_rp13 - $t0_rp13"
       multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13

ip route replace 2001:db8:2::/64 vrf vrf-r1 \
	       nexthop via fe80:2::22 dev $rp12 \
	       nexthop via fe80:3::23 dev $rp13
}

multipath_test()
{
	log_info "Running IPv4 multipath tests"
	multipath4_test "ECMP" 1 1
	multipath4_test "Weighted MP 2:1" 2 1
	multipath4_test "Weighted MP 11:45" 11 45

log_info "Running IPv6 multipath tests"
	multipath6_test "ECMP" 1 1
	multipath6_test "Weighted MP 2:1" 2 1
	multipath6_test "Weighted MP 11:45" 11 45

log_info "Running IPv6 L4 hash multipath tests"
	multipath6_l4_test "ECMP" 1 1
	multipath6_l4_test "Weighted MP 2:1" 2 1
	multipath6_l4_test "Weighted MP 11:45" 11 45
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	rp11=${NETIFS[p2]}

rp12=${NETIFS[p3]}
	rp22=${NETIFS[p4]}

rp13=${NETIFS[p5]}
	rp23=${NETIFS[p6]}

rp21=${NETIFS[p7]}
	h2=${NETIFS[p8]}

vrf_prepare

h1_create
	h2_create

router1_create
	router2_create

forwarding_enable
}

cleanup()
{
	pre_cleanup

forwarding_restore

router2_destroy
	router1_destroy

h2_destroy
	h1_destroy

vrf_cleanup
}

ping_ipv4()
{
	ping_test $h1 198.51.100.2
}

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

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS

cmd: