#!/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
sysctl_restore net.ipv4.conf.$h3.rp_filter
sysctl_restore net.ipv4.conf.all.rp_filter
}
test_gretap()
{
RET=0
mirror_install $swp1 ingress gt4 "matchall"
# For IPv4, test that there's no mirroring without the route directing
# the traffic to tunnel remote address. Then add it and test that
# mirroring starts. For IPv6 we can't test this due to the limitation
# that routes for locally-specified IPv6 addresses can't be added.
fail_test_span_gre_dir gt4
ip route add 192.0.2.130/32 via 192.0.2.162
quick_test_span_gre_dir gt4
ip route del 192.0.2.130/32 via 192.0.2.162
mirror_uninstall $swp1 ingress
log_test "mirror to gre with next-hop remote"
}
test_ip6gretap()
{
RET=0
mirror_install $swp1 ingress gt6 "matchall"
quick_test_span_gre_dir gt6
mirror_uninstall $swp1 ingress
log_test "mirror to ip6gre with next-hop remote"
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
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