#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Send packets with transmit timestamps over loopback with netem # Verify that timestamps correspond to netem delay set -e setup() { # set 1ms delay on lo egress tc qdisc add dev lo root netem delay 1ms # set 2ms delay on ifb0 egress modprobe ifb ip link add ifb_netem0 type ifb ip link set dev ifb_netem0 up tc qdisc add dev ifb_netem0 root netem delay 2ms # redirect lo ingress through ifb0 egress tc qdisc add dev lo handle ffff: ingress tc filter add dev lo parent ffff: \ u32 match mark 0 0xffff \ action mirred egress redirect dev ifb_netem0 } run_test_v4v6() { # SND will be delayed 1000us # ACK will be delayed 6000us: 1 + 2 ms round-trip local -r args="$@ -v 1000 -V 6000" ./txtimestamp ${args} -4 -L 127.0.0.1 ./txtimestamp ${args} -6 -L ::1 } run_test_tcpudpraw() { local -r args=$@ run_test_v4v6 ${args} # tcp run_test_v4v6 ${args} -u # udp run_test_v4v6 ${args} -r # raw run_test_v4v6 ${args} -R # raw (IPPROTO_RAW) run_test_v4v6 ${args} -P # pf_packet } run_test_all() { run_test_tcpudpraw # setsockopt run_test_tcpudpraw -C # cmsg run_test_tcpudpraw -n # timestamp w/o data } if [[ "$(ip netns identify)" == "root" ]]; then ../../net/in_netns.sh $0 $@ else setup run_test_all echo "OK. All tests passed" fi