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passt/test/lib/setup
David Gibson 0a15b467d4 test: Use --config-net for namespace setup 
The setup functions for passt_in_ns and two_guests perform some fairly slow
dhclient calls to configure the network in the namespace before starting
the guest.  This isn't really part of the tests, just necessary for the
operations later.

We can simplify and speed this up a bit by using pasta's '--config-net'
option to configure the networking for us.  As a bonus this means we have
at least a minimal test of the --config-net option itself.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2022-09-29 12:21:13 +02:00

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#!/bin/sh
#
# 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/lib/setup - Set up and tear down passt and pasta environments
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
INITRAMFS="${BASEPATH}/mbuto.img"
VCPUS="$( [ $(nproc) -ge 8 ] && echo 6 || echo $(( $(nproc) / 2 + 1 )) )"
__mem_kib="$(sed -n 's/MemTotal:[ ]*\([0-9]*\) kB/\1/p' /proc/meminfo)"
VMEM="$((${__mem_kib} / 1024 / 4))"
NSHOLDER="${BASEPATH}/nsholder"
# setup_build() - Set up pane layout for build tests
setup_build() {
context_setup_host host
layout_host
}
# setup_distro() - Set up pane layout for distro tests
setup_distro() {
layout_host
}
# setup_passt() - Start qemu and passt
setup_passt() {
context_setup_host host
context_setup_host passt
context_setup_host qemu
layout_passt
# Ports:
#
# guest | host
# --------------|---------------------
# 10001 as server | forwarded to guest
# 10003 | as server
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run passt "make clean"
context_run passt "make valgrind"
context_run_bg passt "valgrind --max-stackframe=$((4 * 1024 * 1024)) --trace-children=yes --vgdb=no --error-exitcode=1 --suppressions=test/valgrind.supp ./passt ${__opts} -f -t 10001 -u 10001 -P ${STATESETUP}/passt.pid"
# pidfile isn't created until passt is listening
wait_for [ -f "${STATESETUP}/passt.pid" ]
GUEST_CID=94557
context_run_bg qemu './qrap 5 qemu-system-$(uname -m)' \
' -machine accel=kvm' \
' -m '${VMEM}' -cpu host -smp '${VCPUS} \
' -kernel ' "/boot/vmlinuz-$(uname -r)" \
' -initrd '${INITRAMFS}' -nographic -serial stdio' \
' -nodefaults' \
' -append "console=ttyS0 mitigations=off apparmor=0 ' \
'virtio-net.napi_tx=1"' \
" -device virtio-net-pci,netdev=hostnet0,x-txburst=16384" \
" -netdev socket,fd=5,id=hostnet0" \
" -pidfile ${STATESETUP}/qemu.pid" \
" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
context_setup_guest guest $GUEST_CID
}
# setup_pasta() - Create a network and user namespace, connect pasta to it
setup_pasta() {
context_setup_host host
context_setup_host passt
context_setup_host unshare
layout_pasta
context_run_bg unshare "unshare -rUnpf ${NSHOLDER} ${STATESETUP}/ns.hold hold"
__target_pid=$(${NSHOLDER} ${STATESETUP}/ns.hold pid)
context_setup_nsenter ns -U -n -p --preserve-credentials -t ${__target_pid}
# Ports:
#
# ns | host
# ------------------|---------------------
# 10002 as server | spliced to ns
# 10003 spliced to init | as server
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/pasta.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt "./pasta ${__opts} -f -t 10002 -T 10003 -u 10002 -U 10003 -P ${STATESETUP}/passt.pid ${__target_pid}"
# pidfile isn't created until pasta is ready
wait_for [ -f "${STATESETUP}/passt.pid" ]
}
# setup_passt_in_ns() - Set up namespace (with pasta), run qemu and passt into it
setup_passt_in_ns() {
context_setup_host host
context_setup_host pasta
layout_passt_in_pasta
# Ports:
#
# guest | ns | host
# -------------|--------------------|-----------------
# 10001 as server | forwarded to guest | spliced to ns
# 10002 | as server | spliced to ns
# 10003 | spliced to init | as server
# 10011 as server | forwarded to guest | spliced to ns
# 10012 | as server | spliced to ns
# 10013 | spliced to init | as server
#
# 10021 as server | forwarded to guest |
# 10031 as server | forwarded to guest |
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/pasta_with_passt.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg pasta "./pasta ${__opts} -t 10001,10002,10011,10012 -T 10003,10013 -u 10001,10002,10011,10012 -U 10003,10013 -P ${STATESETUP}/pasta.pid --config-net ${NSHOLDER} ${STATESETUP}/ns.hold hold"
wait_for [ -f "${STATESETUP}/pasta.pid" ]
__ns_pid=$(${NSHOLDER} ${STATESETUP}/ns.hold pid)
context_setup_nsenter qemu "-t ${__ns_pid} -U -n -p --preserve-credentials"
context_setup_nsenter ns "-t ${__ns_pid} -U -n -p --preserve-credentials"
context_setup_nsenter passt "-t ${__ns_pid} -U -n -p --preserve-credentials"
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_in_pasta.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
if [ ${VALGRIND} -eq 1 ]; then
context_run passt "make clean"
context_run passt "make valgrind"
context_run_bg passt "valgrind --max-stackframe=$((4 * 1024 * 1024)) --trace-children=yes --vgdb=no --error-exitcode=1 --suppressions=test/valgrind.supp ./passt -f ${__opts} -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid"
else
context_run passt "make clean"
context_run passt "make"
context_run_bg passt "./passt -f ${__opts} -t 10001,10011,10021,10031 -u 10001,10011,10021,10031 -P ${STATESETUP}/passt.pid"
fi
wait_for [ -f "${STATESETUP}/passt.pid" ]
GUEST_CID=94557
context_run_bg qemu './qrap 5 qemu-system-$(uname -m)' \
' -machine accel=kvm' \
' -M accel=kvm:tcg' \
' -m '${VMEM}' -cpu host -smp '${VCPUS} \
' -kernel ' "/boot/vmlinuz-$(uname -r)" \
' -initrd '${INITRAMFS}' -nographic -serial stdio' \
' -nodefaults' \
' -append "console=ttyS0 mitigations=off apparmor=0 ' \
'virtio-net.napi_tx=1"' \
" -device virtio-net-pci,netdev=hostnet0,x-txburst=524288" \
" -netdev socket,fd=5,id=hostnet0" \
" -pidfile ${STATESETUP}/qemu.pid" \
" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
context_setup_guest guest $GUEST_CID
}
# setup_two_guests() - Set up two namespace, run qemu and passt in both of them
setup_two_guests() {
context_setup_host host
context_setup_host pasta_1
context_setup_host pasta_2
layout_two_guests
# Ports:
#
# guest #1 | guest #2 | ns #1 | ns #2 | host
# --------- |-----------|-----------|------------|------------
# 10001 as server | | to guest | to init | to ns #1
# 10002 | | as server | | to ns #1
# 10003 | | to init | to init | as server
# 10004 | as server | to init | to guest | to ns #2
# 10005 | | | as server | to ns #2
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/pasta_1.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg pasta_1 "./pasta ${__opts} -P ${STATESETUP}/pasta_1.pid -t 10001,10002 -T 10003,10004 -u 10001,10002 -U 10003,10004 --config-net ${NSHOLDER} ${STATESETUP}/ns1.hold hold"
__ns1_pid=$(${NSHOLDER} ${STATESETUP}/ns1.hold pid)
context_setup_nsenter passt_1 -U -n -p --preserve-credentials -t ${__ns1_pid}
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/pasta_2.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg pasta_2 "./pasta ${__opts} -P ${STATESETUP}/pasta_2.pid -t 10004,10005 -T 10003,10001 -u 10004,10005 -U 10003,10001 --config-net ${NSHOLDER} ${STATESETUP}/ns2.hold hold"
__ns2_pid=$(${NSHOLDER} ${STATESETUP}/ns2.hold pid)
context_setup_nsenter passt_2 -U -n -p --preserve-credentials -t ${__ns2_pid}
context_setup_nsenter qemu_1 -U -n -p --preserve-credentials -t ${__ns1_pid}
context_setup_nsenter qemu_2 -U -n -p --preserve-credentials -t ${__ns2_pid}
__ifname="$(context_run qemu_1 "ip -j link show | jq -rM '.[] | select(.link_type == \"ether\").ifname'")"
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_1.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt_1 "./passt -P ${STATESETUP}/passt_1.pid -f ${__opts} -t 10001 -u 10001"
wait_for [ -f "${STATESETUP}/passt_1.pid" ]
__opts=
[ ${PCAP} -eq 1 ] && __opts="${__opts} -p ${LOGDIR}/passt_2.pcap"
[ ${DEBUG} -eq 1 ] && __opts="${__opts} -d"
[ ${TRACE} -eq 1 ] && __opts="${__opts} --trace"
context_run_bg passt_2 "./passt -P ${STATESETUP}/passt_2.pid -f ${__opts} -t 10004 -u 10004"
wait_for [ -f "${STATESETUP}/passt_2.pid" ]
GUEST_1_CID=94557
context_run_bg qemu_1 './qrap 5 qemu-system-$(uname -m)' \
' -M accel=kvm:tcg' \
' -m '${VMEM}' -cpu host -smp '${VCPUS} \
' -kernel ' "/boot/vmlinuz-$(uname -r)" \
' -initrd '${INITRAMFS}' -nographic -serial stdio' \
' -nodefaults' \
' -append "console=ttyS0 mitigations=off apparmor=0 ' \
'virtio-net.napi_tx=1"' \
" -device virtio-net-pci,netdev=hostnet0,x-txburst=16384" \
" -netdev socket,fd=5,id=hostnet0" \
" -pidfile ${STATESETUP}/qemu_1.pid" \
" -device vhost-vsock-pci,guest-cid=$GUEST_1_CID"
GUEST_2_CID=94558
context_run_bg qemu_2 './qrap 5 qemu-system-$(uname -m)' \
' -M accel=kvm:tcg' \
' -m '${VMEM}' -cpu host -smp '${VCPUS} \
' -kernel ' "/boot/vmlinuz-$(uname -r)" \
' -initrd '${INITRAMFS}' -nographic -serial stdio' \
' -nodefaults' \
' -append "console=ttyS0 mitigations=off apparmor=0 ' \
'virtio-net.napi_tx=1"' \
" -device virtio-net-pci,netdev=hostnet0,x-txburst=16384" \
" -netdev socket,fd=5,id=hostnet0" \
" -pidfile ${STATESETUP}/qemu_2.pid" \
" -device vhost-vsock-pci,guest-cid=$GUEST_2_CID"
context_setup_guest guest_1 ${GUEST_1_CID}
context_setup_guest guest_2 ${GUEST_2_CID}
}
# teardown_context_watch() - Remove contexts and stop panes watching them
# $1: Pane number watching
# $@: Context names
teardown_context_watch() {
__pane="$1"
shift
for __c; do
context_teardown "${__c}"
done
tmux send-keys -t ${__pane} "C-c"
}
# teardown_build() - Nothing to do, yet
teardown_build() {
teardown_context_watch ${PANE_HOST} host
}
# teardown_distro() - Nothing to do, yet
teardown_distro() {
:
}
# teardown_passt() - Kill qemu, remove passt PID file
teardown_passt() {
kill $(cat "${STATESETUP}/qemu.pid")
rm "${STATESETUP}/passt.pid"
teardown_context_watch ${PANE_HOST} host
teardown_context_watch ${PANE_PASST} passt
teardown_context_watch ${PANE_GUEST} qemu guest
}
# teardown_passt() - Exit namespace, kill pasta process
teardown_pasta() {
${NSHOLDER} "${STATESETUP}/ns.hold" stop
context_wait unshare
teardown_context_watch ${PANE_HOST} host
teardown_context_watch ${PANE_PASST} passt
teardown_context_watch ${PANE_NS} unshare ns
}
# teardown_passt_in_ns() - Exit namespace, kill qemu and pasta, remove pid file
teardown_passt_in_ns() {
context_run ns kill $(cat "${STATESETUP}/qemu.pid")
context_wait qemu
${NSHOLDER} "${STATESETUP}/ns.hold" stop
context_wait pasta
rm "${STATESETUP}/passt.pid" "${STATESETUP}/pasta.pid"
teardown_context_watch ${PANE_HOST} host
teardown_context_watch ${PANE_PASST} pasta passt
teardown_context_watch ${PANE_NS} ns
teardown_context_watch ${PANE_GUEST} qemu guest
}
# teardown_two_guests() - Exit namespaces, kill qemu processes, passt and pasta
teardown_two_guests() {
__ns1_pid=$(${NSHOLDER} "${STATESETUP}/ns1.hold" pid)
__ns2_pid=$(${NSHOLDER} "${STATESETUP}/ns2.hold" pid)
nsenter -U -p --preserve-credentials -t ${__ns1_pid} kill $(cat "${STATESETUP}/qemu_1.pid")
nsenter -U -p --preserve-credentials -t ${__ns2_pid} kill $(cat "${STATESETUP}/qemu_2.pid")
context_wait qemu_1
context_wait qemu_2
nsenter -U -p --preserve-credentials -t ${__ns1_pid} kill $(cat "${STATESETUP}/passt_1.pid")
nsenter -U -p --preserve-credentials -t ${__ns2_pid} kill $(cat "${STATESETUP}/passt_2.pid")
context_wait passt_1
context_wait passt_2
${NSHOLDER} "${STATESETUP}/ns1.hold" stop
${NSHOLDER} "${STATESETUP}/ns2.hold" stop
context_wait pasta_1
context_wait pasta_2
rm -f "${STATESETUP}/passt__[12].pid" "${STATESETUP}/pasta_[12].pid"
teardown_context_watch ${PANE_HOST} host
teardown_context_watch ${PANE_GUEST_1} qemu_1 guest_1
teardown_context_watch ${PANE_GUEST_2} qemu_2 guest_2
teardown_context_watch ${PANE_PASST_1} pasta_1 passt_1
teardown_context_watch ${PANE_PASST_2} pasta_2 passt_2
}
# teardown_demo_passt() - Exit namespace, kill qemu, passt and pasta
teardown_demo_passt() {
tmux send-keys -t ${PANE_GUEST} "C-c"
pane_wait GUEST
tmux send-keys -t ${PANE_GUEST} "C-d"
tmux send-keys -t ${PANE_PASST} "C-c"
pane_wait GUEST
pane_wait HOST
pane_wait PASST
tmux kill-pane -a -t 0
tmux send-keys -t 0 "C-c"
}
# teardown_demo_pasta() - Exit perf and namespace from remaining pane
teardown_demo_pasta() {
tmux send-keys -t ${PANE_NS} "q"
pane_wait NS
tmux send-keys -t ${PANE_NS} "C-d"
pane_wait NS
tmux kill-pane -a -t 0
tmux send-keys -t 0 "C-c"
}
# teardown_demo_podman() - Exit namespaces
teardown_demo_podman() {
tmux send-keys -t ${PANE_NS1} "C-d"
tmux send-keys -t ${PANE_NS2} "C-d"
pane_wait NS1
pane_wait NS2
tmux kill-pane -a -t 0
tmux send-keys -t 0 "C-c"
}
# setup() - Run setup_*() functions
# $*: Suffix list of setup_*() functions to be called
setup() {
for arg do
STATESETUP="${STATEBASE}/${arg}"
mkdir -p "${STATESETUP}"
eval setup_${arg}
done
}
# teardown() - Run teardown_*() functions
# $*: Suffix list of teardown_*() functions to be called
teardown() {
for arg do
eval teardown_${arg}
done
}
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