Currently, ethernet-based VLANs can specify the hardware address of
the parent device (and, in theory, the cloned hardware address and MTU
of the VLAN device) by using an NMSettingWired in addition to the
NMSettingVlan.
The theory was that non-ethernet-based VLANs, when we eventually
supported them, would likewise use the setting type corresponding to
their parent device. However, this turns out to be both complicated
(the settings plugins and connection editor would have a
hard-to-impossible time figuring out which setting type to use in some
cases) and incorrect (for most L2 settings [eg, BSSID, bond mode,
etc], the VLAN can't have its own values separate from the parent
device).
What we should have done was just have :mac-address,
:cloned-mac-address, and :mtu properties on NMSettingVlan. However, at
this point, for backward-compatibility, we will just stick with using
a combination of NMSettingVlan and NMSettingWired, but we will use
NMSettingWired regardless of the underlying hardware type.
Rather than having NMManager know how to parse various settings to
create each kind of software device, add a _new_for_connection()
constructor to each of them and let them call NMPlatform to create the
device correctly themselves.
Rather than setting the VLAN maps when the device is created, set them
at activation time, which is more in line with how other device types
work.
Like the old code, this doesn't attempt to reset any existing
ingress/egress mappings on the device.
Software devices don't have a UDI until udev finds them, and since we need
to know about the software devices before udev finds them the UDI will be
missing. Instead of requiring a UDI on NMDevice creation, update the
property from the NMPlatform link change signal when udev does find the
device.
Now that a UDI is no longer required for device creation, software devices
added by NM would be created in the platform_link_added_cb() signal
handler triggered by the various software device creation methods in
system_create_virtual_device() (eg nm_platform_bridge_add() etc). Then
the NMDevice created in system_create_virtual_device() would be a duplicate
and cause problems when it was added. Since system_create_virtual_device()
needs to do setup on some devices, suppress the device creation from the
platform link added handler in this function.
Much of this is a hack which should be cleaned up later.
This is really, really old 2007-era code. Any NMDevice that gets
created is already supported, so there's no reason to have every
device set NM_DEVICE_CAP_NM_SUPPORTED. For those subclasses that
only set that capability, we can remove the subclass method
entirely. Next, it turns out that the "type capabilities" code
wasn't used anywhere, so remove that too. Lastly, "cipsec"
interfaces haven't been used on linux in about 5 years (they
were created by the Cisco binary-only IPSec kernel module for
Cisco VPNs long before vpnc and openswan came around) so we can
remove that code too.
Change the way that nm-properties-changed-signal works, and parse the
dbus-binding-tool-generated info to get the exact list of properties
that it's expected to export.
This makes NM_PROPERTY_PARAM_NO_EXPORT unnecessary, and also fixes the
problem of properties like NMDevice:hw-address being exported on
classes where it shouldn't be.
