tools/testing/selftests/net/txtimestamp.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Send packets with transmit timestamps over loopback with netem
   5 # Verify that timestamps correspond to netem delay
   6
   7 set -e
   8
   9 setup() {
  10         # set 1ms delay on lo egress
  11         tc qdisc add dev lo root netem delay 10ms
  12
  13         # set 2ms delay on ifb0 egress
  14         modprobe ifb
  15         ip link add ifb_netem0 type ifb
  16         ip link set dev ifb_netem0 up
  17         tc qdisc add dev ifb_netem0 root netem delay 20ms
  18
  19         # redirect lo ingress through ifb0 egress
  20         tc qdisc add dev lo handle ffff: ingress
  21         tc filter add dev lo parent ffff: \
  22                 u32 match mark 0 0xffff \
  23                 action mirred egress redirect dev ifb_netem0
  24 }
  25
  26 run_test_v4v6() {
  27         # SND will be delayed 10ms
  28         # ACK will be delayed 60ms: 10 + 20 ms round-trip
  29         # allow +/- tolerance of 8ms
  30         # wait for ACK to be queued
  31         local -r args="$@ -v 10000 -V 60000 -t 8000 -S 80000"
  32
  33         ./txtimestamp ${args} -4 -L 127.0.0.1
  34         ./txtimestamp ${args} -6 -L ::1
  35 }
  36
  37 run_test_tcpudpraw() {
  38         local -r args=$@
  39
  40         run_test_v4v6 ${args}             # tcp
  41         run_test_v4v6 ${args} -u          # udp
  42         run_test_v4v6 ${args} -u -o 42    # udp with fixed tskey
  43         run_test_v4v6 ${args} -r          # raw
  44         run_test_v4v6 ${args} -r -o 42    # raw
  45         run_test_v4v6 ${args} -R          # raw (IPPROTO_RAW)
  46         run_test_v4v6 ${args} -P          # pf_packet
  47 }
  48
  49 run_test_all() {
  50         setup
  51         run_test_tcpudpraw              # setsockopt
  52         run_test_tcpudpraw -C           # cmsg
  53         run_test_tcpudpraw -n           # timestamp w/o data
  54         echo "OK. All tests passed"
  55 }
  56
  57 run_test_one() {
  58         setup
  59         ./txtimestamp $@
  60 }
  61
  62 usage() {
  63         echo "Usage: $0 [ -r | --run ] <txtimestamp args> | [ -h | --help ]"
  64         echo "  (no args)  Run all tests"
  65         echo "  -r|--run  Run an individual test with arguments"
  66         echo "  -h|--help Help"
  67 }
  68
  69 main() {
  70         if [[ $# -eq 0 ]]; then
  71                 run_test_all
  72         else
  73                 if [[ "$1" = "-r" || "$1" == "--run" ]]; then
  74                         shift
  75                         run_test_one $@
  76                 else
  77                         usage
  78                 fi
  79         fi
  80 }
  81
  82 if [[ -z "$(ip netns identify)" ]]; then
  83         ./in_netns.sh $0 $@
  84 else
  85         main $@
  86 fi