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passt/test/perf/pasta_tcp
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_tcp - Check TCP performance in pasta mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
htools head ip seq bc sleep iperf3 tcp_rr tcp_crr jq sed
nstools /sbin/sysctl nproc ip seq sleep iperf3 tcp_rr tcp_crr jq sed
set MAP_HOST4 192.0.2.1
set MAP_HOST6 2001:db8:9a55::1
test pasta: throughput and latency (local connections)
ns /sbin/sysctl -w net.ipv4.tcp_rmem="131072 524288 134217728"
ns /sbin/sysctl -w net.ipv4.tcp_wmem="131072 524288 134217728"
ns /sbin/sysctl -w net.ipv4.tcp_timestamps=0
set THREADS 4
set TIME 1
set OMIT 0.1
set OPTS -Z -w 4M -l 1M -P __THREADS__ -O__OMIT__
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__
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
report pasta lo_tcp __THREADS__ __FREQ__
th MTU 65535B
tr TCP throughput over IPv6: ns to host
iperf3s host 10003
iperf3 BW ns ::1 10003 __THREADS__ __TIME__ __OPTS__
bw __BW__ 15.0 20.0
iperf3k host
tl TCP RR latency over IPv6: ns to host
hostb tcp_rr --nolog -P 10003 -C 10013 -6
nsout LAT tcp_rr --nolog -l1 -P 10003 -C 10013 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 150 100
tl TCP CRR latency over IPv6: ns to host
hostb tcp_crr --nolog -P 10003 -C 10013 -6
nsout LAT tcp_crr --nolog -l1 -P 10003 -C 10013 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 500 350
tr TCP throughput over IPv4: ns to host
iperf3s host 10003
iperf3 BW ns 127.0.0.1 10003 __THREADS__ __TIME__ __OPTS__
bw __BW__ 15.0 20.0
iperf3k host
tl TCP RR latency over IPv4: ns to host
hostb tcp_rr --nolog -P 10003 -C 10013 -4
nsout LAT tcp_rr --nolog -l1 -P 10003 -C 10013 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 150 100
tl TCP CRR latency over IPv4: ns to host
hostb tcp_crr --nolog -P 10003 -C 10013 -4
nsout LAT tcp_crr --nolog -l1 -P 10003 -C 10013 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 500 350
tr TCP throughput over IPv6: host to ns
iperf3s ns 10002
iperf3 BW host ::1 10002 __TIME__ __OPTS__
bw __BW__ 15.0 20.0
iperf3k ns
tl TCP RR latency over IPv6: host to ns
nsb tcp_rr --nolog -P 10002 -C 10012 -6
hout LAT tcp_rr --nolog -l1 -P 10002 -C 10012 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 150 100
tl TCP CRR latency over IPv6: host to ns
nsb tcp_crr --nolog -P 10002 -C 10012 -6
hout LAT tcp_crr --nolog -l1 -P 10002 -C 10012 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 1000 700
tr TCP throughput over IPv4: host to ns
iperf3s ns 10002
iperf3 BW host 127.0.0.1 10002 __TIME__ __OPTS__
bw __BW__ 15.0 20.0
iperf3k ns
tl TCP RR latency over IPv4: host to ns
nsb tcp_rr --nolog -P 10002 -C 10012 -4
hout LAT tcp_rr --nolog -l1 -P 10002 -C 10012 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 150 100
tl TCP CRR latency over IPv4: host to ns
nsb tcp_crr --nolog -P 10002 -C 10012 -4
hout LAT tcp_crr --nolog -l1 -P 10002 -C 10012 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 1000 700
te
test pasta: throughput and latency (connections via tap)
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
set THREADS 2
set OPTS -Z -P __THREADS__ -i1 -O__OMIT__
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz
report pasta tap_tcp __THREADS__ __FREQ__
th MTU 1500B 4000B 16384B 65520B
tr TCP throughput over IPv6: ns to host
iperf3s host 10003
ns ip link set dev __IFNAME__ mtu 1500
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -w 512k
bw __BW__ 0.2 0.4
ns ip link set dev __IFNAME__ mtu 4000
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -w 1M
bw __BW__ 0.3 0.5
ns ip link set dev __IFNAME__ mtu 16384
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -w 8M
bw __BW__ 1.5 2.0
ns ip link set dev __IFNAME__ mtu 65520
iperf3 BW ns __MAP_HOST6__ 10003 __TIME__ __OPTS__ -w 8M
bw __BW__ 2.0 2.5
iperf3k host
tl TCP RR latency over IPv6: ns to host
lat -
lat -
lat -
hostb tcp_rr --nolog -P 10003 -C 10013 -6
nsout LAT tcp_rr --nolog -l1 -P 10003 -C 10013 -6 -c -H __MAP_HOST6__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 150 100
tl TCP CRR latency over IPv6: ns to host
lat -
lat -
lat -
hostb tcp_crr --nolog -P 10003 -C 10013 -6
nsout LAT tcp_crr --nolog -l1 -P 10003 -C 10013 -6 -c -H __MAP_HOST6__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 1500 500
tr TCP throughput over IPv4: ns to host
iperf3s host 10003
ns ip link set dev __IFNAME__ mtu 1500
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -w 512k
bw __BW__ 0.2 0.4
ns ip link set dev __IFNAME__ mtu 4000
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -w 1M
bw __BW__ 0.3 0.5
ns ip link set dev __IFNAME__ mtu 16384
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -w 8M
bw __BW__ 1.5 2.0
ns ip link set dev __IFNAME__ mtu 65520
iperf3 BW ns __MAP_HOST4__ 10003 __TIME__ __OPTS__ -w 8M
bw __BW__ 2.0 2.5
iperf3k host
tl TCP RR latency over IPv4: ns to host
lat -
lat -
lat -
hostb tcp_rr --nolog -P 10003 -C 10013 -4
nsout LAT tcp_rr --nolog -l1 -P 10003 -C 10013 -4 -c -H __MAP_HOST4__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 150 100
tl TCP CRR latency over IPv4: ns to host
lat -
lat -
lat -
hostb tcp_crr --nolog -P 10003 -C 10013 -4
nsout LAT tcp_crr --nolog -l1 -P 10003 -C 10013 -4 -c -H __MAP_HOST4__ | sed -n 's/^throughput=\(.*\)/\1/p'
hostw
lat __LAT__ 1500 500
tr TCP 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'
bw -
bw -
bw -
iperf3 BW host __ADDR6__ 10002 __TIME__ __OPTS__
bw __BW__ 8.0 10.0
iperf3k ns
tl TCP RR latency over IPv6: host to ns
lat -
lat -
lat -
nsb tcp_rr --nolog -P 10002 -C 10012 -6
hout LAT tcp_rr --nolog -l1 -P 10002 -C 10012 -6 -c -H __ADDR6__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 150 100
tl TCP CRR latency over IPv6: host to ns
lat -
lat -
lat -
sleep 1
nsb tcp_crr --nolog -P 10002 -C 10012 -6
hout LAT tcp_crr --nolog -l1 -P 10002 -C 10012 -6 -c -H __ADDR6__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 5000 10000
tr TCP 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'
bw -
bw -
bw -
iperf3 BW host __ADDR__ 10002 __TIME__ __OPTS__
bw __BW__ 8.0 10.0
iperf3k ns
tl TCP RR latency over IPv4: host to ns
lat -
lat -
lat -
nsb tcp_rr --nolog -P 10002 -C 10012 -4
hout LAT tcp_rr --nolog -l1 -P 10002 -C 10012 -4 -c -H __ADDR__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 150 100
tl TCP CRR latency over IPv4: host to ns
lat -
lat -
lat -
sleep 1
nsb tcp_crr --nolog -P 10002 -C 10012 -4
hout LAT tcp_crr --nolog -l1 -P 10002 -C 10012 -4 -c -H __ADDR__ | sed -n 's/^throughput=\(.*\)/\1/p'
nsw
lat __LAT__ 5000 10000
te
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