linux/tools/testing/selftests/net/so_txtime.sh

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Regression tests for the SO_TXTIME interface
# Run in network namespace
if [[ $# -eq 0 ]]; then
if ! ./in_netns.sh $0 __subprocess; then
# test is time sensitive, can be flaky
echo "test failed: retry once"
./in_netns.sh $0 __subprocess
fi
exit $?
fi
set -e
tc qdisc add dev lo root fq
./so_txtime -4 -6 -c mono a,-1 a,-1
./so_txtime -4 -6 -c mono a,0 a,0
./so_txtime -4 -6 -c mono a,10 a,10
./so_txtime -4 -6 -c mono a,10,b,20 a,10,b,20
./so_txtime -4 -6 -c mono a,20,b,10 b,20,a,20
if tc qdisc replace dev lo root etf clockid CLOCK_TAI delta 400000; then
! ./so_txtime -4 -6 -c tai a,-1 a,-1
! ./so_txtime -4 -6 -c tai a,0 a,0
./so_txtime -4 -6 -c tai a,10 a,10
./so_txtime -4 -6 -c tai a,10,b,20 a,10,b,20
./so_txtime -4 -6 -c tai a,20,b,10 b,10,a,20
else
echo "tc ($(tc -V)) does not support qdisc etf. skipping"
fi
echo OK. All tests passed