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File Content: `loopback.sh`

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

# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4

ALL_TESTS="loopback_test"
NUM_NETIFS=2
source tc_common.sh
source lib.sh

h1_create()
{
	simple_if_init $h1 192.0.2.1/24
	tc qdisc add dev $h1 clsact
}

h1_destroy()
{
	tc qdisc del dev $h1 clsact
	simple_if_fini $h1 192.0.2.1/24
}

h2_create()
{
	simple_if_init $h2
}

h2_destroy()
{
	simple_if_fini $h2
}

loopback_test()
{
	RET=0

	tc filter add dev $h1 ingress protocol arp pref 1 handle 101 flower \
		skip_hw arp_op reply arp_tip 192.0.2.1 action drop

	$MZ $h1 -c 1 -t arp -q

	tc_check_packets "dev $h1 ingress" 101 1
	check_fail $? "Matched on a filter without loopback setup"

	ethtool -K $h1 loopback on
	check_err $? "Failed to enable loopback"

	setup_wait_dev $h1

	$MZ $h1 -c 1 -t arp -q

	tc_check_packets "dev $h1 ingress" 101 1
	check_err $? "Did not match on filter with loopback"

	ethtool -K $h1 loopback off
	check_err $? "Failed to disable loopback"

	$MZ $h1 -c 1 -t arp -q

	tc_check_packets "dev $h1 ingress" 101 2
	check_fail $? "Matched on a filter after loopback was removed"

	tc filter del dev $h1 ingress protocol arp pref 1 handle 101 flower

	log_test "loopback"
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	h2=${NETIFS[p2]}

	vrf_prepare

	h1_create
	h2_create

	if ethtool -k $h1 | grep loopback | grep -q fixed; then
		log_test "SKIP: dev $h1 does not support loopback feature"
		exit $ksft_skip
	fi
}

cleanup()
{
	pre_cleanup

	h2_destroy
	h1_destroy

	vrf_cleanup
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS

Name	Size	Permission
bridge_igmp.sh	2887 bytes	0755
bridge_port_isolation.sh	2378 bytes	0755
bridge_sticky_fdb.sh	1159 bytes	0755
bridge_vlan_aware.sh	2524 bytes	0755
bridge_vlan_unaware.sh	1248 bytes	0755
devlink_lib.sh	7592 bytes	0644
gre_inner_v4_multipath.sh	7730 bytes	0755
gre_inner_v6_multipath.sh	7843 bytes	0755
gre_multipath.sh	6439 bytes	0755
ip6gre_inner_v4_multipath.sh	7956 bytes	0755
ip6gre_inner_v6_multipath.sh	8069 bytes	0755
ipip_flat_gre.sh	838 bytes	0755
ipip_flat_gre_key.sh	860 bytes	0755
ipip_flat_gre_keys.sh	886 bytes	0755
ipip_hier_gre.sh	887 bytes	0755
ipip_hier_gre_key.sh	910 bytes	0755
ipip_hier_gre_keys.sh	938 bytes	0755
ipip_lib.sh	8557 bytes	0644
lib.sh	19856 bytes	0644
loopback.sh	1589 bytes	0755
mirror_gre.sh	3366 bytes	0755
mirror_gre_bound.sh	5929 bytes	0755
mirror_gre_bridge_1d.sh	4345 bytes	0755
mirror_gre_bridge_1d_vlan.sh	2717 bytes	0755
mirror_gre_bridge_1q.sh	4221 bytes	0755
mirror_gre_bridge_1q_lag.sh	7485 bytes	0755
mirror_gre_changes.sh	5824 bytes	0755
mirror_gre_flower.sh	2891 bytes	0755
mirror_gre_lag_lacp.sh	7458 bytes	0755
mirror_gre_lib.sh	2565 bytes	0644
mirror_gre_neigh.sh	2338 bytes	0755
mirror_gre_nh.sh	2974 bytes	0755
mirror_gre_topo_lib.sh	3524 bytes	0644
mirror_gre_vlan.sh	1715 bytes	0755
mirror_gre_vlan_bridge_1q.sh	9117 bytes	0755
mirror_lib.sh	2808 bytes	0644
mirror_topo_lib.sh	2758 bytes	0644
mirror_vlan.sh	2303 bytes	0755
router.sh	2154 bytes	0755
router_bridge.sh	1794 bytes	0755
router_bridge_vlan.sh	2108 bytes	0755
router_broadcast.sh	5142 bytes	0755
router_mpath_nh.sh	8144 bytes	0755
router_multicast.sh	11597 bytes	0755
router_multipath.sh	8449 bytes	0755
router_vid_1.sh	2153 bytes	0755
tc_actions.sh	6155 bytes	0755
tc_chains.sh	4943 bytes	0755
tc_common.sh	316 bytes	0644
tc_flower.sh	11475 bytes	0755
tc_flower_router.sh	3096 bytes	0755
tc_shblocks.sh	2748 bytes	0755
tc_vlan_modify.sh	3246 bytes	0755
vxlan_asymmetric.sh	17978 bytes	0755
vxlan_bridge_1d.sh	20528 bytes	0755
vxlan_bridge_1d_port_8472.sh	172 bytes	0755
vxlan_bridge_1q.sh	24053 bytes	0755
vxlan_bridge_1q_port_8472.sh	172 bytes	0755
vxlan_symmetric.sh	18488 bytes	0755

Name

Size

Permission

Action

bridge_igmp.sh

2887 bytes

0755