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passt/test/perf/pasta_udp
David Gibson e813a4df7d conf: Allow address remapped to host to be configured 
Because the host and guest share the same IP address with passt/pasta, it's
not possible for the guest to directly address the host.  Therefore we
allow packets from the guest going to a special "NAT to host" address to be
redirected to the host, appearing there as though they have both source and
destination address of loopback.

Currently that special address is always the address of the default
gateway (or none).  That can be a problem if we want that gateway to be
addressable by the guest.  Therefore, allow the special "NAT to host"
address to be overridden on the command line with a new --map-host-loopback
option.

In order to exercise and test it, update the passt_in_ns and perf
tests to use this option and give different mapping addresses for the
two layers of the environment.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2024-08-21 12:00:35 +02:00

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# SPDX-License-Identifier: GPL-2.0-or-later
#
# PASST - Plug A Simple Socket Transport
# for qemu/UNIX domain socket mode
#
# PASTA - Pack A Subtle Tap Abstraction
# for network namespace/tap device mode
#
# test/perf/pasta_udp - Check UDP performance in pasta mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
htools bc head ip sleep iperf3 udp_rr jq sed
nstools ip sleep iperf3 udp_rr jq sed
set MAP_HOST4 192.0.2.1
set MAP_HOST6 2001:db8:9a55::1
test pasta: throughput and latency (local traffic)
hout FREQ_PROCFS (echo "scale=1"; sed -n 's/cpu MHz.*: \([0-9]*\)\..*$/(\1+10^2\/2)\/10^3/p' /proc/cpuinfo) | bc -l | head -n1
hout FREQ_CPUFREQ (echo "scale=1"; printf '( %i + 10^5 / 2 ) / 10^6\n' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l
hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
set THREADS 1
set TIME 1
set OPTS -u -P __THREADS__
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz
report pasta lo_udp 1 __FREQ__
th pktlen 1500B 4000B 16384B 65535B
tr UDP throughput over IPv6: ns to host
iperf3s host 10003
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
iperf3 BW ns ::1 10003 __TIME__ __OPTS__ -b 5G -l 1452
bw __BW__ 1.0 1.5
iperf3 BW ns ::1 10003 __TIME__ __OPTS__ -b 10G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW ns ::1 10003 __TIME__ __OPTS__ -b 30G -l 16336
bw __BW__ 5.0 6.0
iperf3 BW ns ::1 10003 __TIME__ __OPTS__ -b 40G -l 65487
bw __BW__ 7.0 9.0
iperf3k host
tl UDP RR latency over IPv6: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -6
nsout LAT udp_rr --nolog -P 10003 -C 10013 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv4: ns to host
iperf3s host 10003
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
iperf3 BW ns 127.0.0.1 10003 __TIME__ __OPTS__ -b 5G -l 1372
bw __BW__ 1.0 1.5
iperf3 BW ns 127.0.0.1 10003 __TIME__ __OPTS__ -b 10G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW ns 127.0.0.1 10003 __TIME__ __OPTS__ -b 30G -l 16356
bw __BW__ 5.0 6.0
iperf3 BW ns 127.0.0.1 10003 __TIME__ __OPTS__ -b 40G -l 65507
bw __BW__ 7.0 9.0
iperf3k host
tl UDP RR latency over IPv4: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -4
nsout LAT udp_rr --nolog -P 10003 -C 10013 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv6: host to ns
iperf3s ns 10002
iperf3 BW host ::1 10002 __TIME__ __OPTS__ -b 5G -l 1452
bw __BW__ 1.0 1.5
iperf3 BW host ::1 10002 __TIME__ __OPTS__ -b 10G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW host ::1 10002 __TIME__ __OPTS__ -b 30G -l 16336
bw __BW__ 5.0 6.0
iperf3 BW host ::1 10002 __TIME__ __OPTS__ -b 40G -l 65487
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv6: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -6
hout LAT udp_rr --nolog -P 10002 -C 10012 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
tr UDP throughput over IPv4: host to ns
iperf3s ns 10002
iperf3 BW host 127.0.0.1 10002 __TIME__ __OPTS__ -b 5G -l 1372
bw __BW__ 1.0 1.5
iperf3 BW host 127.0.0.1 10002 __TIME__ __OPTS__ -b 10G -l 3972
bw __BW__ 1.2 1.8
iperf3 BW host 127.0.0.1 10002 __TIME__ __OPTS__ -b 30G -l 16356
bw __BW__ 5.0 6.0
iperf3 BW host 127.0.0.1 10002 __TIME__ __OPTS__ -b 40G -l 65507
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv4: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -4
hout LAT udp_rr --nolog -P 10002 -C 10012 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
te
test pasta: throughput and latency (traffic via tap)
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz
report pasta tap_udp 1 __FREQ__
th pktlen 1500B 4000B 16384B 65520B
tr UDP throughput over IPv6: ns to host
iperf3s host 10003
# (datagram size) = (packet size) - 48: 40 bytes of IPv6 header, 8 of UDP header
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -b 8G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -b 12G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -b 20G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -b 30G -l 65472
bw __BW__ 6.0 7.0
iperf3k host
tl UDP RR latency over IPv6: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -6
nsout LAT udp_rr --nolog -P 10003 -C 10013 -6 -c -H __MAP_HOST6__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv4: ns to host
iperf3s host 10003
# (datagram size) = (packet size) - 28: 20 bytes of IPv4 header, 8 of UDP header
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -b 8G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -b 12G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -b 20G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -b 30G -l 65492
bw __BW__ 6.0 7.0
iperf3k host
tl UDP RR latency over IPv4: ns to host
lat -
lat -
lat -
hostb udp_rr --nolog -P 10003 -C 10013 -4
nsout LAT udp_rr --nolog -P 10003 -C 10013 -4 -c -H __MAP_HOST4__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 200 150
tr UDP throughput over IPv6: host to ns
iperf3s ns 10002
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
nsout ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local'
iperf3 BW host __ADDR6__ 10002 __TIME__ __OPTS__ -b 8G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW host __ADDR6__ 10002 __TIME__ __OPTS__ -b 12G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW host __ADDR6__ 10002 __TIME__ __OPTS__ -b 20G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW host __ADDR6__ 10002 __TIME__ __OPTS__ -b 30G -l 65472
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv6: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -6
hout LAT udp_rr --nolog -P 10002 -C 10012 -6 -c -H __ADDR6__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
tr UDP throughput over IPv4: host to ns
iperf3s ns 10002
nsout ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
iperf3 BW host __ADDR__ 10002 __TIME__ __OPTS__ -b 8G -l 1472
bw __BW__ 0.3 0.5
iperf3 BW host __ADDR__ 10002 __TIME__ __OPTS__ -b 12G -l 3972
bw __BW__ 0.5 0.8
iperf3 BW host __ADDR__ 10002 __TIME__ __OPTS__ -b 20G -l 16356
bw __BW__ 3.0 4.0
iperf3 BW host __ADDR__ 10002 __TIME__ __OPTS__ -b 30G -l 65492
bw __BW__ 7.0 9.0
iperf3k ns
tl UDP RR latency over IPv4: host to ns
lat -
lat -
lat -
nsb udp_rr --nolog -P 10002 -C 10012 -4
hout LAT udp_rr --nolog -P 10002 -C 10012 -4 -c -H __ADDR__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 200 150
te
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