FM / forwarding

/usr/src/linux-headers-5.15.0-181/tools/testing/selftests/net/forwarding/

/usr/src/linux-headers-5.15.0-181/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	20863	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-5.15.0-181/tools/testing/selftests/net/forwarding/gre_multipath.sh (6439B)

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

# Test traffic distribution when a wECMP route forwards traffic to two GRE
# tunnels.
#
# +-------------------------+
# | H1                      |
# |               $h1 +     |
# |      192.0.2.1/28 |     |
# +-------------------|-----+
#                     |
# +-------------------|------------------------+
# | SW1               |                        |
# |              $ol1 +                        |
# |      192.0.2.2/28                          |
# |                                            |
# |  + g1a (gre)          + g1b (gre)          |
# |    loc=192.0.2.65       loc=192.0.2.81     |
# |    rem=192.0.2.66 --.   rem=192.0.2.82 --. |
# |    tos=inherit      |   tos=inherit      | |
# |  .------------------'                    | |
# |  |                    .------------------' |
# |  v                    v                    |
# |  + $ul1.111 (vlan)    + $ul1.222 (vlan)    |
# |  | 192.0.2.129/28     | 192.0.2.145/28     |
# |   \                  /                     |
# |    \________________/                      |
# |            |                               |
# |            + $ul1                          |
# +------------|-------------------------------+
#              |
# +------------|-------------------------------+
# | SW2        + $ul2                          |
# |     _______|________                       |
# |    /                \                      |
# |   /                  \                     |
# |  + $ul2.111 (vlan)    + $ul2.222 (vlan)    |
# |  ^ 192.0.2.130/28     ^ 192.0.2.146/28     |
# |  |                    |                    |
# |  |                    '------------------. |
# |  '------------------.                    | |
# |  + g2a (gre)        | + g2b (gre)        | |
# |    loc=192.0.2.66   |   loc=192.0.2.82   | |
# |    rem=192.0.2.65 --'   rem=192.0.2.81 --' |
# |    tos=inherit          tos=inherit        |
# |                                            |
# |              $ol2 +                        |
# |     192.0.2.17/28 |                        |
# +-------------------|------------------------+
#                     |
# +-------------------|-----+
# | H2                |     |
# |               $h2 +     |
# |     192.0.2.18/28       |
# +-------------------------+

ALL_TESTS="
	ping_ipv4
	multipath_ipv4
"

NUM_NETIFS=6
source lib.sh

h1_create()
{
	simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64
	ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2
}

h1_destroy()
{
	ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2
	simple_if_fini $h1 192.0.2.1/28
}

sw1_create()
{
	simple_if_init $ol1 192.0.2.2/28
	__simple_if_init $ul1 v$ol1
	vlan_create $ul1 111 v$ol1 192.0.2.129/28
	vlan_create $ul1 222 v$ol1 192.0.2.145/28

tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1
	__simple_if_init g1a v$ol1 192.0.2.65/32
	ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130

tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1
	__simple_if_init g1b v$ol1 192.0.2.81/32
	ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146

ip route add vrf v$ol1 192.0.2.16/28 \
	   nexthop dev g1a \
	   nexthop dev g1b
}

sw1_destroy()
{
	ip route del vrf v$ol1 192.0.2.16/28

ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146
	__simple_if_fini g1b 192.0.2.81/32
	tunnel_destroy g1b

ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130
	__simple_if_fini g1a 192.0.2.65/32
	tunnel_destroy g1a

vlan_destroy $ul1 222
	vlan_destroy $ul1 111
	__simple_if_fini $ul1
	simple_if_fini $ol1 192.0.2.2/28
}

sw2_create()
{
	simple_if_init $ol2 192.0.2.17/28
	__simple_if_init $ul2 v$ol2
	vlan_create $ul2 111 v$ol2 192.0.2.130/28
	vlan_create $ul2 222 v$ol2 192.0.2.146/28

tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2
	__simple_if_init g2a v$ol2 192.0.2.66/32
	ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129

tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2
	__simple_if_init g2b v$ol2 192.0.2.82/32
	ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145

ip route add vrf v$ol2 192.0.2.0/28 \
	   nexthop dev g2a \
	   nexthop dev g2b

tc qdisc add dev $ul2 clsact
	tc filter add dev $ul2 ingress pref 111 prot 802.1Q \
	   flower vlan_id 111 action pass
	tc filter add dev $ul2 ingress pref 222 prot 802.1Q \
	   flower vlan_id 222 action pass
}

sw2_destroy()
{
	tc qdisc del dev $ul2 clsact

ip route del vrf v$ol2 192.0.2.0/28

ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145
	__simple_if_fini g2b 192.0.2.82/32
	tunnel_destroy g2b

ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129
	__simple_if_fini g2a 192.0.2.66/32
	tunnel_destroy g2a

vlan_destroy $ul2 222
	vlan_destroy $ul2 111
	__simple_if_fini $ul2
	simple_if_fini $ol2 192.0.2.17/28
}

h2_create()
{
	simple_if_init $h2 192.0.2.18/28
	ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17
}

h2_destroy()
{
	ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17
	simple_if_fini $h2 192.0.2.18/28
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	ol1=${NETIFS[p2]}

ul1=${NETIFS[p3]}
	ul2=${NETIFS[p4]}

ol2=${NETIFS[p5]}
	h2=${NETIFS[p6]}

vrf_prepare
	h1_create
	sw1_create
	sw2_create
	h2_create

forwarding_enable
}

cleanup()
{
	pre_cleanup

forwarding_restore

h2_destroy
	sw2_destroy
	sw1_destroy
	h1_destroy
	vrf_cleanup
}

multipath4_test()
{
	local what=$1; shift
	local weight1=$1; shift
	local weight2=$1; shift

sysctl_set net.ipv4.fib_multipath_hash_policy 1
	ip route replace vrf v$ol1 192.0.2.16/28 \
	   nexthop dev g1a weight $weight1 \
	   nexthop dev g1b weight $weight2

local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t0_222=$(tc_rule_stats_get $ul2 222 ingress)

ip vrf exec v$h1 \
	   $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \
	       -d 1msec -t udp "sp=1024,dp=0-32768"

local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
	local t1_222=$(tc_rule_stats_get $ul2 222 ingress)

local d111=$((t1_111 - t0_111))
	local d222=$((t1_222 - t0_222))
	multipath_eval "$what" $weight1 $weight2 $d111 $d222

ip route replace vrf v$ol1 192.0.2.16/28 \
	   nexthop dev g1a \
	   nexthop dev g1b
	sysctl_restore net.ipv4.fib_multipath_hash_policy
}

ping_ipv4()
{
	ping_test $h1 192.0.2.18
}

multipath_ipv4()
{
	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
}

trap cleanup EXIT

setup_prepare
setup_wait
tests_run

exit $EXIT_STATUS

cmd: