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#!/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
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