Per convention, we shall no link our static libraries with other static
libraries of our own. The purpose is that we only link static libraries
at the end of each build product (that is, in executables, shared
libraries and shared modules).
Avoid dependencies but explicitly link the static library where it is
used.
This also fixes that we linked libnm-log-core into
libnm-settings-plugin-ifcfg-rh.so, which duplicated the symbols
while it should used them from NetworkManager.
Symbols in header files should almost always have an "nm" prefix.
That is not purely cosmetic, because core modules (like libnm-device-plugin*.so
and libnm-settings-plugin*so) should re-use the symbols of the NetworkManager
binary. For NetworkManager we generate a linker version script to only expose
the symbols that are needed. It thereby excludes symbols that don't have an "nm"
prefix.
Hence, the plugins otherwise cannot reuse the global symbol.
The only reason that we currently don't have a linker error is because
we also link the logging static library into the plugin modules. That is
wrong, because we should not duplicate these symbols.
We have a number of static helper libraries. When a user is using such a
library, they need to set the include search paths (-I) and link with
the static library at the right place.
The first part, the include search path, is now trivial. We no longer
add the individual search paths but everybody uses "-I. -Isrc/".
The second part means that when we build a shared library or an
executable that uses symbols from the static library, we need to link
it. But only then, and not earlier so that not multiple intermediate
build products (static libraries too) contain the same code. Note that
for libnm-device-plugin-*.so and other core plugins it's even that
those shared modules should not themselves link with the static
helpers. Instead, the need to use the symbols from NetworkManager.
Easy enough. Previously, we would sometimes define dependencies in
meson. But as it's really simple, I think that those dependencies
obfuscate more than help. Instead drop them, and only explicitly link
where we need it. The exception is libNetworkManagerTest_dep, which
is still a dependency. Maybe that dependency is fine, as it is much
later in the process. Or maybe that will also be replaced in the future.
"nm-compat.h" is not intended to be used by NetworkManager itself.
Instead, it's intended to be copied into the source tree of VPN plugins,
as adapter for different libnm versions.
Move it to "src/contrib/".
This file was intended to be used by VPN plugins (by copying it).
However, it was also used internally.
Split the file, and move the internally used part to libnm-glib-aux.
The part that is only there for out of tree users, moves to
"nm-compat.h".
This file is not actually to be used by NetworkManager itself.
Instead, every (glib based) VPN plugin will want something like this,
hence we have a copy here.
Move it to a new directory "src/contrib/".
This helper code is already used by several of our unit tests.
Compile it as a separate library.
Previously, the source code lingered unmotivated under "shared/",
which is confusing.
"nm-test-utils.h" is a header-only, helper library for our unit tests.
It was somewhat unmotivated in "shared/nm-utils", because all tests use
it, but it was not part of a "module".
Move it to "src/libnm-glib-aux/". It fits there very well. They both
have (only) a dependency on glib.
We want that there is a clear hierarchy and dependency between
modules/directories.
But tests sometimes break that.
For example, "shared/nm-glib-aux/tests" link against libnm-glib-aux
and libnm-log-null. But "shared/nm-log-null" depends on "shared/nm-glib-aux".
Hence, for the test there is a circular dependency.
Break that, by including all tests at the end.
The alternative would be ugly in different ways.
This is really just a different implementation of
"nm-glib-aux/nm-logging-fwd.h", that parallels libnm-log-core.
It's also not only useful to shared/systemd, but also share/nm-platform,
which also requires linking with a logging backend.
The bond option ad_actor_system only matters (and is available) with
mode=802.3ad.
When you create a new bond, the sysctl value will be set to "00:00:00:00:00:00".
So this seems to be a valid value, and in fact the default value for
this option. However, kernel will fail with EINVAL to set the sysctl to
"00:00:00:00:00:00". Kernel fails both if the value is already
"00:00:00:00:00:00" (i.e. setting the same value results in an error) and
it also fails otherwise (i.e. we cannot ever reset the value to
"00:00:00:00:00:00", at least not via sysfs).
Avoid the warning in the common case, where the value is already as
expected.
Otherwise, we still get the warning and won't be able to set the right
value. But this is really a limitation of the kernel API where we cannot
do anything about it (in NetworkManager).
https://bugzilla.redhat.com/show_bug.cgi?id=1923999
A connection with key-mgmt=wpa-psk should be able to connect to WPA,
WPA2 and WPA3 APs, choosing the best candidate automatically.
Also pass SAE (WPA3) key-mgmt to wpa_supplicant when it is supported.
For example, I now get this when connecting to a WPA2 network:
<info> [1613749711.2915] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK SAE FT-SAE'
