We'll try to cope with getting devices being reported in either 'usb' or
'usbmisc', trying to avoid the need of checking kernel version during runtime.
Before this, we only exported the modem to DBus when all ports were organized,
in order to make sure that we select as primary port the one we really want and
not the first AT port grabbed. Given that to get all the ports organized we also
needed to wait to get all the ports grabbed, we can now also defer the creation
of the modem object until all the ports get grabbed. This allows us to create
different types of objects based on the ports available (e.g. we can now create
QMI-supported modem objects if we see a QMI port around).
Make port roles more flexible. We have modems that do PPP
on interfaces other than the primary interface, and that
wasn't possible with the old code. So clean up all that
logic and move the port organization code into the core
so we can reduce code in the plugins.
In the new world order, the plugins say whether the port
is a QCDM port, an AT port, or ignored. If it's an AT
port the plugins get to tag it as primary, secondary, or
PPP, or any combination of the 3. This allows for modems
where PPP should really be done on the secondary port
(Huawei E220, Sierra devices) so that the primary port
stays open for command and status.
After all ports are grabbed by the generic classes, they get
"organized", which assigns various ports to the roles of
PRIMARY, SECONDARY, DATA, and QCDM based on specific rules
and hints that the plugin provided (which are expressed as
MMAtPortFlags).
The plugin code is responsible for determining the port
hints (ie MMAtPortFlags) at probe time, instead of having
a combination of the plugin and the modem class do the
job. This simplifies things greatly for the plugins at
the expense of more complicated logic in the core.
This is the port of commit 96505d42ed62327101dcee7c2bf31177b0bb1c9f
to the 06-api branch.
My LG Rumor2 phone (ttyACM0 - AT, ttyUSB0 - QCDM) was never getting
exported after the QCDM port finished probing. Not entirely sure
why, but we should check whether we need to export a modem or not
any time a port gets grabbed.
We chain up the Generic plugin created MMBroadbandModem objects within the
GDBusObjectManagerServer in MMManager, so that they get properly exported in
DBus.
The MMManager object creation may fail due to environment reasons (i.e. no
plugins found, or problems exporting DBus interfaces), so we can use the
initable interface to properly handle those situations.
The MMManager object now derives from the gdbus-codegen-generated
MmGdbusOrgFreedesktopModemManager1Skeleton object, and implements the handlers
for the SetLogging() and ScanDevices() DBus methods.
The main program is also modified to be based on GDBus.
We now have 'supports_port' (async method) and 'supports_port_finish' (to get
the result of the async method), so it makes sense to rename the method to
'supports_port_cancel'.
Before this change, supports check was either synchronous (e.g. in some
UNSUPPORTED cases) or asynchronous (when IN_PROGRESS was returned).
With this fix, the supports check requested to the plugin will always be
completed asynchronously; either directly in an idle before launching any real
probing operation, or once the probing operation is finished.
Therefore, it is not expected to get a IN_PROGRESS reply in
mm_plugin_supports_port_finish(), only UNSUPPORTED|SUPPORTED|DEFERRED.
While porting to GDBus, use opaque pointers. This allows us to include either a
DBusGMethodInvocation or a GDBusMethodInvocation in the 'context' pointer.
Once fully ported to GDBus, we can safely change it back to make the context be
a GDBusMethodInvocation.
Make port roles more flexible. We have modems that do PPP
on interfaces other than the primary interface, and that
wasn't possible with the old code. So clean up all that
logic and move the port organization code into the core
so we can reduce code in the plugins.
In the new world order, the plugins say whether the port
is a QCDM port, an AT port, or ignored. If it's an AT
port the plugins get to tag it as primary, secondary, or
PPP, or any combination of the 3. This allows for modems
where PPP should really be done on the secondary port
(Huawei E220, Sierra devices) so that the primary port
stays open for command and status.
Modem subclasses no longer get asked to handle port grabbing
themselves. Instead, that's now done by the generic classes
(MMGenericCdma and MMGenericGsm) and the plugins are notified
when a port is grabbed so they can add unsolicited response
handlers for it. After all ports are grabbed by the generic
classes, they get "organized", which assigns various ports
to the roles of PRIMARY, SECONDARY, DATA, and QCDM based
on specific rules and hints that the plugin provided (which
are expressed as MMAtPortFlags). The plugins then have
a chance to perform fixups on the primary port if they choose.
The plugin code is responsible for determining the port
hints (ie MMAtPortFlags) at probe time, instead of having
a combination of the plugin and the modem class do the
job. This simplifies things greatly for the plugins at
the expense of more complicated logic in the core.
Lifted almost entirely from similar code in NetworkManager.
BUG=chromium-os:15197
TEST='dbus-send --print-reply --system --dest=org.freedesktop.ModemManager /org/freedesktop/ModemManager org.freedesktop.ModemManager.SetLogging string:DEBUG'
Also try valid log levels 'ERR', 'WARN', 'INFO', and an invalid log level, such as 'ABCDE'.
Change-Id: I2bddcd0319f4966dd293b119f68e7cc1697949b7
Reviewed-on: http://gerrit.chromium.org/gerrit/3134
Tested-by: Nathan J. Williams <njw@chromium.org>
Reviewed-by: Eric Shienbrood <ers@chromium.org>
Note that even if a plugin says it wants to be sorted last, the generic plugin
will always be the last one. Also, there is no order guaranteed between two
plugins that request to be sorted last.
Ignore devices that aren't completely configured by udev yet. If
ModemManager is started in parallel with udev, explicitly requesting
devices may return devices for which not all udev rules have yet been
applied (a bug in udev/gudev). Since we often need those rules to match
the device to a specific ModemManager driver, we need to ensure that all
rules have been processed before handling a device.
Do this by adding an item to the environment of each device that MM
might possibly be interested in, and ignoring devices that don't
have that. When the device is fully processed by udev, MM will get
an 'add' event and the device will have all rules applied.
Found by jklimes. If some plugin already supports this port, it's
pointless to let Generic figure out if it supports the port since
we're just going to hand it to the other plugin anyway.
Since MMModem is an interface and doesn't store stuff like the
modem's physdev internally (since it's an interface) these things
are handled via GObject properties. And since g_object_get()
returns allocated values, we need to free the returned value
from mm_modem_get_device() after we're done with it.
