passt/test/lib/setup, branch 2025_03_20.32f6212

test: Add migration tests

2025-02-17T07:29:36+00:00

PCAP=1 ./run migrate/bidirectional gives an overview of how the
whole thing is working.

Add 12 tests in total, checking basic functionality with and without
flows in both directions, with and without sockets in half-closed
states (both inbound and outbound), migration behaviour under traffic
flood, under traffic flood with > 253 flows, and strict checking of
sequences under flood with ramp patterns in both directions.

These tests need preparation and teardown for each case, as we need
to restore the source guest in its own context and pane before we can
test again. Eventually, we could consider alternating source and
target so that we don't need to restart from scratch every time, but
that's beyond the scope of this initial test implementation.

Trick: './run migrate/*' runs all the tests with preparation and
teardown steps.

Co-authored-by: David Gibson 
Reviewed-by: David Gibson 
Signed-off-by: Stefano Brivio

dhcp, dhcpv6: Add hostname and client fqdn ops

2025-02-10T17:30:24+00:00

Both DHCPv4 and DHCPv6 has the capability to pass the hostname to
clients, the DHCPv4 uses option 12 (hostname) while the DHCPv6 uses option 39
(client fqdn), for some virt deployments like kubevirt is expected to
have the VirtualMachine name as the guest hostname.

This change add the following arguments:
 - -H --hostname NAME to configure the hostname DHCPv4 option(12)
 - --fqdn NAME to configure client fqdn option for both DHCPv4(81) and
   DHCPv6(39)

Signed-off-by: Enrique Llorente 
Signed-off-by: Stefano Brivio

test: Add tests for passt in vhost-user mode

2024-11-27T15:49:21+00:00

Run functional and performance tests for vhost-user mode as well. For
functional tests, we add passt_vu and passt_vu_in_ns as symbolic links
to their non-vhost-user counterparts, as no differences are intended
but we want to distinguish them in test logs.

For performance tests, instead, we add separate perf/passt_vu_tcp and
perf/passt_vu_udp files, as we need longer test duration, as well as
higher UDP sending bandwidths and larger TCP windows, to actually get
the highest throughput vhost-user mode offers.

For valgrind tests, vhost-user mode needs two extra system calls:
statx and readlink. Add them as EXTRA_SYSCALLS for the valgrind
target.

Signed-off-by: Stefano Brivio 
Signed-off-by: Laurent Vivier 
Reviewed-by: David Gibson

test: Kernel binary can now be passed via the KERNEL environmental variable

2024-10-02T12:50:34+00:00

This is quite useful at least for myself as I'm usually running tests
using a guest kernel that's not the same as the one on the host.

Signed-off-by: Stefano Brivio 
Reviewed-by: David Gibson

test/lib/setup: Transform i686 kernel architecture name into QEMU name (i386)

2024-08-21T10:01:48+00:00

It's qemu-system-i386, but uname -m reports i686. I didn't test i486
and i586.

Signed-off-by: Stefano Brivio 
Reviewed-by: David Gibson

conf: Allow address remapped to host to be configured

2024-08-21T10:00:35+00:00

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 
Signed-off-by: Stefano Brivio

test: Use "nstool exec" to slightly simplify tests

2023-04-07T23:12:08+00:00

Using this, rather than using "nstool info" to get the pid then manually
connecting with nsenter makes things a little simpler.

Signed-off-by: David Gibson 
Signed-off-by: Stefano Brivio

nstool: Replace "pid" subcommand with "info" subcommand

2023-04-07T23:11:52+00:00

The new subcommand gives more information about the holder process and its
namespace, and may be further extended in future.  Add some options which
give the old behaviour for existing scripts.

Signed-off-by: David Gibson 
Signed-off-by: Stefano Brivio

nstool: Reverse parameters to nstool

2023-04-07T23:11:43+00:00

Having the "subcommand" first is more conventional and will make it more
natural for future extensions I have planned.

Signed-off-by: David Gibson 
Signed-off-by: Stefano Brivio

nstool: Rename nsholder to nstool

2023-04-07T23:11:41+00:00

In preparation for extending what it does.

Signed-off-by: David Gibson 
Signed-off-by: Stefano Brivio