| #!/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 |
