tools/testing/selftests/net/forwarding/mirror_gre_nh.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/forwarding/mirror_gre_nh.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/forwarding/mirror_gre_nh.sh
Extension
.sh
Size
2591 bytes
Lines
113
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

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

# This test uses standard topology for testing gretap. See
# mirror_gre_topo_lib.sh for more details.
#
# Test that gretap and ip6gretap mirroring works when the other tunnel endpoint
# is reachable through a next-hop route (as opposed to directly-attached route).

ALL_TESTS="
	test_gretap
	test_ip6gretap
"

NUM_NETIFS=6
source lib.sh
source mirror_lib.sh
source mirror_gre_lib.sh
source mirror_gre_topo_lib.sh

setup_prepare()
{
	h1=${NETIFS[p1]}
	swp1=${NETIFS[p2]}

	swp2=${NETIFS[p3]}
	h2=${NETIFS[p4]}

	swp3=${NETIFS[p5]}
	h3=${NETIFS[p6]}

	sysctl_set net.ipv4.conf.all.rp_filter 0
	sysctl_set net.ipv4.conf.$h3.rp_filter 0

	vrf_prepare
	mirror_gre_topo_create

	sysctl_set net.ipv4.conf.v$h3.rp_filter 0

	ip address add dev $swp3 192.0.2.161/28
	ip address add dev $h3 192.0.2.162/28
	ip address add dev gt4 192.0.2.129/32
	ip address add dev h3-gt4 192.0.2.130/32

	# IPv6 route can't be added after address. Such routes are rejected due
	# to the gateway address having been configured on the local system. It
	# works the other way around though.
	ip address add dev $swp3 2001:db8:4::1/64
	ip -6 route add 2001:db8:2::2/128 via 2001:db8:4::2
	ip address add dev $h3 2001:db8:4::2/64
	ip address add dev gt6 2001:db8:2::1
	ip address add dev h3-gt6 2001:db8:2::2
}

cleanup()
{
	pre_cleanup

	ip -6 route del 2001:db8:2::2/128 via 2001:db8:4::2
	ip address del dev $h3 2001:db8:4::2/64
	ip address del dev $swp3 2001:db8:4::1/64

	ip address del dev $h3 192.0.2.162/28
	ip address del dev $swp3 192.0.2.161/28

	sysctl_restore net.ipv4.conf.v$h3.rp_filter 0

	mirror_gre_topo_destroy
	vrf_cleanup

Annotation

Implementation Notes