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Diffstat (limited to 'test/demo/passt')
| -rw-r--r-- | test/demo/passt | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/test/demo/passt b/test/demo/passt new file mode 100644 index 0000000..a6edbf0 --- /dev/null +++ b/test/demo/passt @@ -0,0 +1,248 @@ +# SPDX-License-Identifier: AGPL-3.0-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/demo/passt - Quick introduction to passt +# +# Copyright (c) 2021 Red Hat GmbH +# Author: Stefano Brivio <sbrivio@redhat.com> + +onlyfor passt +say This is a short introduction to +em passt +say . +nl +nl +sleep 3 + +say Let's fetch the source +sleep 1 +tempdir TEMPDIR +host cd __TEMPDIR__ +host git clone https://passt.top/passt +sleep 1 + +say and build it. +sleep 1 +host cd passt +host make avx2 +sleep 1 + +nl +nl +say A quick look at the man page... +sleep 1 +hostb man ./passt.1 +sleep 5 +hostb /ports +sleep 2 +hostb n +sleep 2 +hostb n +sleep 10 + +nl +say '-t' to forward TCP ports. +sleep 3 +host q + +nl +nl +say Let's create a small initramfs image for the guest. +guest cd __TEMPDIR__ +guest git clone https://mbuto.lameexcu.se/mbuto +guest cd mbuto +guest ./mbuto -f passt.img -p passt -c lz4 +sleep 2 + +nl +nl +say We want to isolate passt and guest in a +nl +say network namespace. For convenience, we'll +nl +say create it with 'pasta', see also the +nl +say 'pasta' demo above. +sleep 3 + +passt cd __TEMPDIR__/passt +passt ./pasta +sleep 3 +passt /sbin/dhclient +sleep 2 +passt /sbin/dhclient -6 +sleep 2 + +nl +nl +say Now let's run 'passt' in the new namespace, and +nl +say enter this namespace from the guest terminal too. +sleep 3 +pout TARGET_PID echo $$ +sleep 1 + +passtb ./passt -f -t 5201,5203 +sleep 2 + +guest nsenter -t __TARGET_PID__ -U -n --preserve-credentials +sleep 5 + +nl +nl +say We're ready to start qemu with the qrap wrapper, +nl +say that we currently need to connect the netdev +nl +say back-end to passt's UNIX domain socket. +sleep 2 +hout VMLINUZ echo "/boot/vmlinuz-$(uname -r)" +guest ../passt/qrap 5 kvm -m 4096 -cpu host -smp 4 -kernel __VMLINUZ__ -initrd passt.img -nographic -serial stdio -nodefaults -append "console=ttyS0 virtio-net.napi_tx=1" -device virtio-net-pci,netdev=hostnet0,x-txburst=16384 -netdev socket,fd=5,id=hostnet0 +sleep 10 + +nl +nl +guest ip li sh +sleep 3 +say Guest is up. Let's configure IPv4 first... +sleep 2 +guest dhclient +sleep 2 +guest ip ad sh +sleep 5 + +nl +say SLAAC is already done, but we can also +nl +say get another address via DHCPv6. +sleep 3 +guest dhclient -6 +sleep 3 + +nl +nl +say Let's try to communicate between host and guest. +sleep 2 +guestb nc -6 -l -p 5201 +sleep 2 +host echo "Hello from the host" | nc -N ::1 5201 +sleep 5 + +nl +nl +say Now the other way around... using +nl +say the address of the default gateway. +sleep 2 +gout GW ip -j -4 ro sh|jq -rM '.[] | select(.dst == "default").gateway' +sleep 5 +hostb nc -l -p 31337 +sleep 2 +guest echo "Hello from the guest" | nc -N __GW__ 31337 +sleep 3 + +nl +nl +say Let's have a (quick!) look at performance +nl +say more in the "Performance" section below. +sleep 3 + +host nsenter -t __TARGET_PID__ -U -n --preserve-credentials + +guest /sbin/sysctl -w net.core.rmem_max=536870912 +guest /sbin/sysctl -w net.core.wmem_max=536870912 +guest /sbin/sysctl -w net.core.rmem_default=33554432 +guest /sbin/sysctl -w net.core.wmem_default=33554432 +guest /sbin/sysctl -w net.ipv4.tcp_rmem="4096 131072 268435456" +guest /sbin/sysctl -w net.ipv4.tcp_wmem="4096 131072 268435456" +guest /sbin/sysctl -w net.ipv4.tcp_timestamps=0 + +host sysctl -w net.ipv4.tcp_rmem="4096 524288 134217728" +host sysctl -w net.ipv4.tcp_wmem="4096 524288 134217728" +host sysctl -w net.ipv4.tcp_timestamps=0 + +gout GW6 ip -j -6 ro sh|jq -rM '.[] | select(.dst == "default").gateway' +gout IFNAME ip -j li sh | jq -rM '.[] | select(.link_type == "ether").ifname' +nl +nl +info Throughput in Gbps, latency in µs +th flow host>guest guest>host + +set OPTS -P4 -w 64M -l 1M -i1 --pacing-timer 100000 + +tr TCP/IPv6 throughput +hostb sleep 10; iperf3 -c ::1 __OPTS__ +gout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second" +bw __BW__ 2.0 3.0 +sleep 5 +guestb sleep 10; iperf3 -c __GW6__%__IFNAME__ -p 5202 __OPTS__ -O3 +hout BW iperf3 -s1J -p 5202 | jq -rM ".end.sum_received.bits_per_second" +bw __BW__ 2.0 3.0 + +tl TCP/IPv6 RR latency +guestb tcp_rr -C 5201 -P 5203 -6 --nolog +sleep 2 +hout LAT tcp_rr -C 5201 -P 5203 --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 +hostb tcp_rr -6 --nolog +sleep 2 +gout LAT tcp_rr --nolog -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 + +tl TCP/IPv6 CRR latency +guestb tcp_crr -C 5201 -P 5203 -6 --nolog +sleep 2 +hout LAT tcp_crr -C 5201 -P 5203 --nolog -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 +hostb tcp_crr -6 --nolog +sleep 2 +gout LAT tcp_crr --nolog -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 + +tr TCP/IPv4 throughput +hostb sleep 10; iperf3 -c 127.0.0.1 __OPTS__ +gout BW iperf3 -s1J | jq -rM ".end.sum_received.bits_per_second" +bw __BW__ 2.0 3.0 +sleep 5 +guestb sleep 10; iperf3 -c __GW__ -p 5202 __OPTS__ -O3 +hout BW iperf3 -s1J -p 5202 | jq -rM ".end.sum_received.bits_per_second" +bw __BW__ 2.0 3.0 + +tl TCP/IPv4 RR latency +guestb tcp_rr -C 5201 -P 5203 -4 --nolog +sleep 2 +hout LAT tcp_rr -C 5201 -P 5203 --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 +hostb tcp_rr -4 --nolog +sleep 2 +gout LAT tcp_rr --nolog -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 + +tl TCP/IPv4 CRR latency +guestb tcp_crr -C 5201 -P 5203 -4 --nolog +sleep 2 +hout LAT tcp_crr -C 5201 -P 5203 --nolog -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 +hostb tcp_crr -4 --nolog +sleep 2 +gout LAT tcp_crr --nolog -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' +lat __LAT__ 1000 800 +sleep 2 + +nl +nl +say Thanks for watching! +sleep 5 |