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

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # This test uses standard topology for testing gretap. See
   5 # mirror_gre_topo_lib.sh for more details.
   6 #
   7 # Test that gretap and ip6gretap mirroring works when the other tunnel endpoint
   8 # is reachable through a next-hop route (as opposed to directly-attached route).
   9
  10 ALL_TESTS="
  11         test_gretap
  12         test_ip6gretap
  13 "
  14
  15 NUM_NETIFS=6
  16 source lib.sh
  17 source mirror_lib.sh
  18 source mirror_gre_lib.sh
  19 source mirror_gre_topo_lib.sh
  20
  21 setup_prepare()
  22 {
  23         h1=${NETIFS[p1]}
  24         swp1=${NETIFS[p2]}
  25
  26         swp2=${NETIFS[p3]}
  27         h2=${NETIFS[p4]}
  28
  29         swp3=${NETIFS[p5]}
  30         h3=${NETIFS[p6]}
  31
  32         sysctl_set net.ipv4.conf.all.rp_filter 0
  33         sysctl_set net.ipv4.conf.$h3.rp_filter 0
  34
  35         vrf_prepare
  36         mirror_gre_topo_create
  37
  38         sysctl_set net.ipv4.conf.v$h3.rp_filter 0
  39
  40         ip address add dev $swp3 192.0.2.161/28
  41         ip address add dev $h3 192.0.2.162/28
  42         ip address add dev gt4 192.0.2.129/32
  43         ip address add dev h3-gt4 192.0.2.130/32
  44
  45         # IPv6 route can't be added after address. Such routes are rejected due
  46         # to the gateway address having been configured on the local system. It
  47         # works the other way around though.
  48         ip address add dev $swp3 2001:db8:4::1/64
  49         ip -6 route add 2001:db8:2::2/128 via 2001:db8:4::2
  50         ip address add dev $h3 2001:db8:4::2/64
  51         ip address add dev gt6 2001:db8:2::1
  52         ip address add dev h3-gt6 2001:db8:2::2
  53 }
  54
  55 cleanup()
  56 {
  57         pre_cleanup
  58
  59         ip -6 route del 2001:db8:2::2/128 via 2001:db8:4::2
  60         ip address del dev $h3 2001:db8:4::2/64
  61         ip address del dev $swp3 2001:db8:4::1/64
  62
  63         ip address del dev $h3 192.0.2.162/28
  64         ip address del dev $swp3 192.0.2.161/28
  65
  66         sysctl_restore net.ipv4.conf.v$h3.rp_filter 0
  67
  68         mirror_gre_topo_destroy
  69         vrf_cleanup
  70
  71         sysctl_restore net.ipv4.conf.$h3.rp_filter
  72         sysctl_restore net.ipv4.conf.all.rp_filter
  73 }
  74
  75 test_gretap()
  76 {
  77         RET=0
  78         mirror_install $swp1 ingress gt4 "matchall $tcflags"
  79
  80         # For IPv4, test that there's no mirroring without the route directing
  81         # the traffic to tunnel remote address. Then add it and test that
  82         # mirroring starts. For IPv6 we can't test this due to the limitation
  83         # that routes for locally-specified IPv6 addresses can't be added.
  84         fail_test_span_gre_dir gt4 ingress
  85
  86         ip route add 192.0.2.130/32 via 192.0.2.162
  87         quick_test_span_gre_dir gt4 ingress
  88         ip route del 192.0.2.130/32 via 192.0.2.162
  89
  90         mirror_uninstall $swp1 ingress
  91         log_test "mirror to gre with next-hop remote ($tcflags)"
  92 }
  93
  94 test_ip6gretap()
  95 {
  96         RET=0
  97
  98         mirror_install $swp1 ingress gt6 "matchall $tcflags"
  99         quick_test_span_gre_dir gt6 ingress
 100         mirror_uninstall $swp1 ingress
 101
 102         log_test "mirror to ip6gre with next-hop remote ($tcflags)"
 103 }
 104
 105 test_all()
 106 {
 107         slow_path_trap_install $swp1 ingress
 108         slow_path_trap_install $swp1 egress
 109
 110         tests_run
 111
 112         slow_path_trap_uninstall $swp1 egress
 113         slow_path_trap_uninstall $swp1 ingress
 114 }
 115
 116 trap cleanup EXIT
 117
 118 setup_prepare
 119 setup_wait
 120
 121 tcflags="skip_hw"
 122 test_all
 123
 124 if ! tc_offload_check; then
 125         echo "WARN: Could not test offloaded functionality"
 126 else
 127         tcflags="skip_sw"
 128         test_all
 129 fi
 130
 131 exit $EXIT_STATUS