so_txtime.sh

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3#
  4# Regression tests for the SO_TXTIME interface
  5
  6set -e
  7
  8readonly ksft_skip=4
  9readonly DEV="veth0"
 10readonly BIN="./so_txtime"
 11
 12readonly RAND="$(mktemp -u XXXXXX)"
 13readonly NSPREFIX="ns-${RAND}"
 14readonly NS1="${NSPREFIX}1"
 15readonly NS2="${NSPREFIX}2"
 16
 17readonly SADDR4='192.168.1.1'
 18readonly DADDR4='192.168.1.2'
 19readonly SADDR6='fd::1'
 20readonly DADDR6='fd::2'
 21
 22cleanup() {
 23	ip netns del "${NS2}"
 24	ip netns del "${NS1}"
 25}
 26
 27trap cleanup EXIT
 28
 29# Create virtual ethernet pair between network namespaces
 30ip netns add "${NS1}"
 31ip netns add "${NS2}"
 32
 33ip link add "${DEV}" netns "${NS1}" type veth \
 34  peer name "${DEV}" netns "${NS2}"
 35
 36# Bring the devices up
 37ip -netns "${NS1}" link set "${DEV}" up
 38ip -netns "${NS2}" link set "${DEV}" up
 39
 40# Set fixed MAC addresses on the devices
 41ip -netns "${NS1}" link set dev "${DEV}" address 02:02:02:02:02:02
 42ip -netns "${NS2}" link set dev "${DEV}" address 06:06:06:06:06:06
 43
 44# Add fixed IP addresses to the devices
 45ip -netns "${NS1}" addr add 192.168.1.1/24 dev "${DEV}"
 46ip -netns "${NS2}" addr add 192.168.1.2/24 dev "${DEV}"
 47ip -netns "${NS1}" addr add       fd::1/64 dev "${DEV}" nodad
 48ip -netns "${NS2}" addr add       fd::2/64 dev "${DEV}" nodad
 49
 50run_test() {
 51	local readonly IP="$1"
 52	local readonly CLOCK="$2"
 53	local readonly TXARGS="$3"
 54	local readonly RXARGS="$4"
 55
 56	if [[ "${IP}" == "4" ]]; then
 57		local readonly SADDR="${SADDR4}"
 58		local readonly DADDR="${DADDR4}"
 59	elif [[ "${IP}" == "6" ]]; then
 60		local readonly SADDR="${SADDR6}"
 61		local readonly DADDR="${DADDR6}"
 62	else
 63		echo "Invalid IP version ${IP}"
 64		exit 1
 65	fi
 66
 67	local readonly START="$(date +%s%N --date="+ 0.1 seconds")"
 68
 69	ip netns exec "${NS2}" "${BIN}" -"${IP}" -c "${CLOCK}" -t "${START}" -S "${SADDR}" -D "${DADDR}" "${RXARGS}" -r &
 70	ip netns exec "${NS1}" "${BIN}" -"${IP}" -c "${CLOCK}" -t "${START}" -S "${SADDR}" -D "${DADDR}" "${TXARGS}"
 71	wait "$!"
 72}
 73
 74do_test() {
 75	run_test $@
 76	[ $? -ne 0 ] && ret=1
 77}
 78
 79do_fail_test() {
 80	run_test $@
 81	[ $? -eq 0 ] && ret=1
 82}
 83
 84ip netns exec "${NS1}" tc qdisc add dev "${DEV}" root fq
 85set +e
 86ret=0
 87do_test 4 mono a,-1 a,-1
 88do_test 6 mono a,0 a,0
 89do_test 6 mono a,10 a,10
 90do_test 4 mono a,10,b,20 a,10,b,20
 91do_test 6 mono a,20,b,10 b,20,a,20
 92
 93if ip netns exec "${NS1}" tc qdisc replace dev "${DEV}" root etf clockid CLOCK_TAI delta 400000; then
 94	do_fail_test 4 tai a,-1 a,-1
 95	do_fail_test 6 tai a,0 a,0
 96	do_test 6 tai a,10 a,10
 97	do_test 4 tai a,10,b,20 a,10,b,20
 98	do_test 6 tai a,20,b,10 b,10,a,20
 99else
100	echo "tc ($(tc -V)) does not support qdisc etf. skipping"
101	[ $ret -eq 0 ] && ret=$ksft_skip
102fi
103
104if [ $ret -eq 0 ]; then
105	echo OK. All tests passed
106elif [[ $ret -ne $ksft_skip && -n "$KSFT_MACHINE_SLOW" ]]; then
107	echo "Ignoring errors due to slow environment" 1>&2
108	ret=0
109fi
110exit $ret