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

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 mirror_install()
   4 {
   5         local from_dev=$1; shift
   6         local direction=$1; shift
   7         local to_dev=$1; shift
   8         local filter=$1; shift
   9
  10         tc filter add dev $from_dev $direction \
  11            pref 1000 $filter \
  12            action mirred egress mirror dev $to_dev
  13 }
  14
  15 mirror_uninstall()
  16 {
  17         local from_dev=$1; shift
  18         local direction=$1; shift
  19
  20         tc filter del dev $swp1 $direction pref 1000
  21 }
  22
  23 mirror_test()
  24 {
  25         local vrf_name=$1; shift
  26         local sip=$1; shift
  27         local dip=$1; shift
  28         local dev=$1; shift
  29         local pref=$1; shift
  30         local expect=$1; shift
  31
  32         local t0=$(tc_rule_stats_get $dev $pref)
  33         $MZ $vrf_name ${sip:+-A $sip} -B $dip -a own -b bc -q \
  34             -c 10 -d 100msec -t icmp type=8
  35         sleep 0.5
  36         local t1=$(tc_rule_stats_get $dev $pref)
  37         local delta=$((t1 - t0))
  38         # Tolerate a couple stray extra packets.
  39         ((expect <= delta && delta <= expect + 2))
  40         check_err $? "Expected to capture $expect packets, got $delta."
  41 }
  42
  43 do_test_span_dir_ips()
  44 {
  45         local expect=$1; shift
  46         local dev=$1; shift
  47         local direction=$1; shift
  48         local ip1=$1; shift
  49         local ip2=$1; shift
  50
  51         icmp_capture_install $dev
  52         mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
  53         mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
  54         icmp_capture_uninstall $dev
  55 }
  56
  57 quick_test_span_dir_ips()
  58 {
  59         do_test_span_dir_ips 10 "$@"
  60 }
  61
  62 fail_test_span_dir_ips()
  63 {
  64         do_test_span_dir_ips 0 "$@"
  65 }
  66
  67 test_span_dir_ips()
  68 {
  69         local dev=$1; shift
  70         local direction=$1; shift
  71         local forward_type=$1; shift
  72         local backward_type=$1; shift
  73         local ip1=$1; shift
  74         local ip2=$1; shift
  75
  76         quick_test_span_dir_ips "$dev" "$direction" "$ip1" "$ip2"
  77
  78         icmp_capture_install $dev "type $forward_type"
  79         mirror_test v$h1 $ip1 $ip2 $dev 100 10
  80         icmp_capture_uninstall $dev
  81
  82         icmp_capture_install $dev "type $backward_type"
  83         mirror_test v$h2 $ip2 $ip1 $dev 100 10
  84         icmp_capture_uninstall $dev
  85 }
  86
  87 fail_test_span_dir()
  88 {
  89         fail_test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
  90 }
  91
  92 test_span_dir()
  93 {
  94         test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
  95 }
  96
  97 do_test_span_vlan_dir_ips()
  98 {
  99         local expect=$1; shift
 100         local dev=$1; shift
 101         local vid=$1; shift
 102         local direction=$1; shift
 103         local ip1=$1; shift
 104         local ip2=$1; shift
 105
 106         # Install the capture as skip_hw to avoid double-counting of packets.
 107         # The traffic is meant for local box anyway, so will be trapped to
 108         # kernel.
 109         vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip"
 110         mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
 111         mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
 112         vlan_capture_uninstall $dev
 113 }
 114
 115 quick_test_span_vlan_dir_ips()
 116 {
 117         do_test_span_vlan_dir_ips 10 "$@"
 118 }
 119
 120 fail_test_span_vlan_dir_ips()
 121 {
 122         do_test_span_vlan_dir_ips 0 "$@"
 123 }
 124
 125 quick_test_span_vlan_dir()
 126 {
 127         quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
 128 }
 129
 130 fail_test_span_vlan_dir()
 131 {
 132         fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
 133 }