xref: /linux/tools/testing/selftests/net/forwarding/mirror_gre_topo_lib.sh (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80) 
1# SPDX-License-Identifier: GPL-2.0
2
3# This is the standard topology for testing mirroring to gretap and ip6gretap
4# netdevices. The tests that use it tweak it in one way or another--importantly,
5# $swp3 and $h3 need to have addresses set up.
6#
7#   +---------------------+                             +---------------------+
8#   | H1                  |                             |                  H2 |
9#   |     + $h1           |                             |           $h2 +     |
10#   |     | 192.0.2.1/28  |                             |  192.0.2.2/28 |     |
11#   +-----|---------------+                             +---------------|-----+
12#         |                                                             |
13#   +-----|-------------------------------------------------------------|-----+
14#   | SW  o--> mirror                                                   |     |
15#   | +---|-------------------------------------------------------------|---+ |
16#   | |   + $swp1                    BR                           $swp2 +   | |
17#   | +---------------------------------------------------------------------+ |
18#   |                                                                         |
19#   |     + $swp3               + gt6 (ip6gretap)      + gt4 (gretap)         |
20#   |     |                     : loc=2001:db8:2::1    : loc=192.0.2.129      |
21#   |     |                     : rem=2001:db8:2::2    : rem=192.0.2.130      |
22#   |     |                     : ttl=100              : ttl=100              |
23#   |     |                     : tos=inherit          : tos=inherit          |
24#   |     |                     :                      :                      |
25#   +-----|---------------------:----------------------:----------------------+
26#         |                     :                      :
27#   +-----|---------------------:----------------------:----------------------+
28#   | H3  + $h3                 + h3-gt6 (ip6gretap)   + h3-gt4 (gretap)      |
29#   |                             loc=2001:db8:2::2      loc=192.0.2.130      |
30#   |                             rem=2001:db8:2::1      rem=192.0.2.129      |
31#   |                             ttl=100                ttl=100              |
32#   |                             tos=inherit            tos=inherit          |
33#   |                                                                         |
34#   +-------------------------------------------------------------------------+
35
36source "$net_forwarding_dir/mirror_topo_lib.sh"
37
38mirror_gre_topo_h3_create()
39{
40	mirror_topo_h3_create
41
42	tunnel_create h3-gt4 gretap 192.0.2.130 192.0.2.129
43	ip link set h3-gt4 vrf v$h3
44	matchall_sink_create h3-gt4
45
46	tunnel_create h3-gt6 ip6gretap 2001:db8:2::2 2001:db8:2::1
47	ip link set h3-gt6 vrf v$h3
48	matchall_sink_create h3-gt6
49}
50
51mirror_gre_topo_h3_destroy()
52{
53	tunnel_destroy h3-gt6
54	tunnel_destroy h3-gt4
55
56	mirror_topo_h3_destroy
57}
58
59mirror_gre_topo_switch_create()
60{
61	mirror_topo_switch_create
62
63	tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \
64		      ttl 100 tos inherit
65
66	tunnel_create gt6 ip6gretap 2001:db8:2::1 2001:db8:2::2 \
67		      ttl 100 tos inherit allow-localremote
68}
69
70mirror_gre_topo_switch_destroy()
71{
72	tunnel_destroy gt6
73	tunnel_destroy gt4
74
75	mirror_topo_switch_destroy
76}
77
78mirror_gre_topo_create()
79{
80	mirror_topo_h1_create
81	mirror_topo_h2_create
82	mirror_gre_topo_h3_create
83
84	mirror_gre_topo_switch_create
85}
86
87mirror_gre_topo_destroy()
88{
89	mirror_gre_topo_switch_destroy
90
91	mirror_gre_topo_h3_destroy
92	mirror_topo_h2_destroy
93	mirror_topo_h1_destroy
94}
95