Which requires that we turn it into a GInterface that MMModemBase
can implement, because dbus-glib does not allow attaching more
than one introspection glue structure to an object at a time.
Also implement the standard D-Bus properties changed signal.
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.
-1 = no APN set, so use modem default. We'll have to fix a few
more things up for modems like hso/mbm that don't use ATDT and
require CIDs, but this gets us halfway there for other devices.
If the base class advertises that it implements an interface, it
really does need to implement all that interface's properties too.
Otherwise dbus-glib gets mad and can't look up the property information
for D-Bus Introspection.
We currently convert to and from the modem's set charset and always pass
'15' as the data coding scheme. Passing the correct data coding scheme
as third argument to CUSD only upsets the network. This contradicts 3GPP
TS 23.038. Other tools like gsm-ussd handle it the same way.
Network responses that require further actions are not yet implemented.
(some fixes and cleanups by Dan Williams)
Some devices (8775 specifically) get angry if you don't check for
a PS attach before dialing. The next time they try to connect,
they'll continuously report "searching" as the registration status
and return CME ERROR 30 (No Network Service) for lots of requests.
So initiate a PS attach (which should return OK if the modem is
already attached) before dialing, and if that fails cancel the
dial attempt.
See http://mail.gnome.org/archives/networkmanager-list/2010-October/msg00072.html
"I talked about this problem with a contact at SierraWireless. He said that
a firmware upgrade will not help in this case. But what can help is checking
for PS attach and dial only if PS attach status is attached. Dialing without
PS attach can bring modem into unwanted condition that sometimes restart is
needed to recover."
Checking PIN status makes sure the SIM is initialized, and
that has to happen before we try to read the SIM for the
ICCID. So move PIN checking before getting the ICCID, and
retry the ICCID at least once for odd cards like Gobi 1K
that seems to need one more try right after it's done
booting up.
Depending on when the core requested the ICCID, the port may or may
not be open. Stuff that needs an open serial port needs to make sure
that the port gets opened itself.
An obfuscated SimIdentifier that may be available before the PIN has
been entered, for use in auto-unlocking a device. If this value is
present, it should be used in preference to DeviceIdentifier as it
is SIM-specific like the PIN code.
Pass the device's hardware IDs through modem creation and use them
when calculating the device's identifier. Add a bunch of testcases
for real hardware to ensure we don't break the device ID in the
future unless we really want to.
This is computed before any PIN is entered, and thus before we can
usually get IMEI or MEID/ESN out of the device in many cases. It's
therefore not the same as EquipmentIdentifier.
This is intended to be used by UI programs for matching devices with
PIN numbers for automatic unlocking. While the PIN number is actually
*SIM* specific, no modems allow access to the IMSI before the PIN is
entered, and thus we cannot actually match the PIN with the SIM. The
device ID is the next best thing we can use and should allow auto
unlocking in most cases.
Ensure that valid HDLC frames that are not valid QCDM frames
are correctly rejected, and that their data is correctly
discarded.
The core bug was that Sierra CnS frames have leading and trailing
HDLC frame terminator bytes (0x7E), and the code was incorrectly
treating the leading terminator as the end of a frame, not the
beginning. Thus it would consider the outstanding serial request
finished without actually parsing the response packet.
Now, we make sure we don't tell the serial receive code that
we have a full QCDM frame until we actually do have one, which is
at least 3 bytes + 0x7E.
Test that a Version Info request/response works as expected, and
add a testcase for a bug where specific Sierra CnS responses to
the Version Info request do not properly return an error when
attempting to parse the response as a QCDM packet. Fix for the
second thing forthcoming.
This is the real fix for 81d0fd148f.
Some devices don't interact well with the option driver or the usb-serial
layer; they don't respond to the USB data requests and thus data never
gets written to that port. When close(2) is called, that data is still
pending and so the tty layer waits 30 seconds before returning from
the close. This is the 'closing_wait' value, which unfortunately is
not able to be modified by ModemManager because most serial drivers
for 3G devices don't implement the .ioctl handler or its TCIOSSERIAL
option to change closing_wait.
This goes along with a kernel patch to various drivers to enable
the TIOCSSERIAL ioctl to modify closing_wait which will be posted
soon.
