1c36c8d3f8
Instead of using the 'temp' and 'tempdir' DSL directives to create
temporary files, use fixed paths relative to __STATEDIR__. This has two
advantages:
1) The files are automatically cleaned up if the tests fail (and even if
that doesn't work they're easier to clean up manuall)
2) When debugging tests it's easier to figure out which of the temporary
files are relevant to whatever's going wrong
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
274 lines
5 KiB
Text
274 lines
5 KiB
Text
# SPDX-License-Identifier: AGPL-3.0-or-later
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#
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# PASST - Plug A Simple Socket Transport
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# for qemu/UNIX domain socket mode
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#
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# PASTA - Pack A Subtle Tap Abstraction
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# for network namespace/tap device mode
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#
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# test/demo/pasta - Quick introduction to pasta
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#
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# Copyright (c) 2021 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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say This is a short introduction to
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em pasta
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say .
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nl
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nl
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sleep 3
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say Let's fetch the source
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sleep 1
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host cd __STATEDIR__
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host git clone git://passt.top/passt
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sleep 1
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say and build it.
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sleep 1
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host cd passt
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host make
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sleep 1
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nl
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nl
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say A quick look at the man page...
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sleep 1
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hostb man ./pasta.1
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sleep 5
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hostb /pasta
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sleep 2
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hostb n
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sleep 2
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hostb n
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sleep 10
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nl
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say without PID, it will create a namespace.
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sleep 3
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passt cd __STATEDIR__/passt
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passtb ./pasta -P /tmp/pasta.pid
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sleep 3
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nl
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nl
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say For convenience, let's enter this namespace
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nl
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say from another terminal.
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sleep 3
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nsout TARGET_PID pgrep -P $(cat /tmp/pasta.pid)
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sleep 1
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ns nsenter -t __TARGET_PID__ -U -n --preserve-credentials
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sleep 5
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nl
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nl
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say Now, we're ready to configure networking.
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sleep 2
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host q
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nl
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nl
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ns ip link show
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sleep 3
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say Let's configure IPv4 first...
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sleep 2
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ns /sbin/dhclient -4 --no-pid
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sleep 2
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ns ip addr show
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sleep 5
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nl
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say SLAAC is already done, but we can also
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nl
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say get another address via DHCPv6.
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sleep 3
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ns /sbin/dhclient -6 --no-pid
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sleep 3
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nl
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nl
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say Let's try to communicate between host and namespace
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sleep 2
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nl
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say ...there's no need to configure port forwarding,
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nl
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say pasta detects bound ports and forwards them.
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sleep 3
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nsb socat TCP6-LISTEN:31337,bind=[::1] STDOUT
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sleep 2
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host echo "Hello from the host" | socat -u STDIN TCP6:[::1]:31337
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sleep 5
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nl
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nl
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say Now the other way around...
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nl
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say we can use a loopback address
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sleep 2
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hostb socat TCP6-LISTEN:31337,bind=[::1] STDIO
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sleep 2
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ns echo "Hello from the namespace" | socat -u STDIN TCP6:[::1]:31337
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sleep 5
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nl
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say or the address of the default gateway.
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sleep 2
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nsout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
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sleep 5
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hostb socat TCP4-LISTEN:31337 STDIO
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sleep 2
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ns echo "Hello from the namespace" | socat -u STDIN TCP4:__GW__:31337
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sleep 3
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nl
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nl
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say UDP...
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sleep 2
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ns host -t A passt.top
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sleep 3
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say seems to work too.
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sleep 3
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nl
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nl
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em pasta
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say can also take packet captures.
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sleep 3
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passt exit
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sleep 2
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passtb ./pasta -p __STATEDIR__/demo_pasta.pcap
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sleep 2
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passt
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passt /sbin/dhclient -4 --no-pid
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sleep 2
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hostb tshark -r __STATEDIR__/demo_pasta.pcap
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sleep 5
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nl
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nl
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say And there are tons of totally useless
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sleep 1
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bsp 14
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say absolutely useful features
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nl
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say you can find described in the man page.
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sleep 5
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nl
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nl
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say Let's have a (quick!) look at performance
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nl
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say more in the "Performance" section below.
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sleep 3
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ns exit
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passt exit
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passt make clean
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passt CFLAGS="-g" make
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sleep 2
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passtb perf record -g ./pasta -P /tmp/pasta.pid
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sleep 2
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nsout TARGET_PID pgrep -P $(cat /tmp/pasta.pid)
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sleep 1
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ns nsenter -t __TARGET_PID__ -U -n --preserve-credentials
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sleep 5
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nl
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nl
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info Throughput in Gbps, latency in µs
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th flow init>ns ns>init
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set OPTS -P4 -l 1M -w 32M -i1 --pacing-timer 100000
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tr TCP/IPv6 throughput
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hostb sleep 10; iperf3 -c ::1 __OPTS__
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nsout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second"
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bw __BW__ 10.0 20.0
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sleep 5
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nsb sleep 10; iperf3 -c ::1 __OPTS__
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hout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second"
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bw __BW__ 10.0 20.0
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tl TCP/IPv6 RR latency
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nsb tcp_rr -6 --nolog
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sleep 2
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hout LAT tcp_rr --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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hostb tcp_rr -6 --nolog
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sleep 2
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nsout LAT tcp_rr --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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tl TCP/IPv6 CRR latency
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nsb tcp_crr -6 --nolog
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sleep 2
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hout LAT tcp_crr --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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hostb tcp_crr -6 --nolog
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sleep 2
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nsout LAT tcp_crr --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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tr TCP/IPv4 throughput
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hostb sleep 10; iperf3 -c 127.0.0.1 __OPTS__
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nsout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second"
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bw __BW__ 10.0 20.0
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sleep 5
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nsb sleep 10; iperf3 -c 127.0.0.1 __OPTS__
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hout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second"
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bw __BW__ 10.0 20.0
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tl TCP/IPv4 RR latency
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nsb tcp_rr -4 --nolog
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sleep 2
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hout LAT tcp_rr --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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hostb tcp_rr -4 --nolog
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sleep 2
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nsout LAT tcp_rr --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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tl TCP/IPv4 CRR latency
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nsb tcp_crr -4 --nolog
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sleep 2
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hout LAT tcp_crr --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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hostb tcp_crr -4 --nolog
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sleep 2
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nsout LAT tcp_crr --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p'
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lat __LAT__ 1000 500
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sleep 2
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sleep 5
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passt exit
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sleep 2
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killp PASST
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killp HOST
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sleep 2
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ns cd __STATEDIR__/passt
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nsb perf report -g --max-stack 3
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sleep 10
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nl
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nl
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say I
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em knew
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say it.
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em syscalls
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say .
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sleep 5
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nl
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nl
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say Thanks for watching!
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sleep 5
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