Sometimes SUPL-server based A-GPS is not possible, e.g. if the module
doesn't have Internet connectivity. In such cases, the modem may
support injecting additional "assistance data" that may be downloaded
from the Internet using external means (e.g. WiFi), in order to keep
having a quick time to first fix.
We now support using this location assistance data, with the following
new API elements:
* A new mask of supported assistance data types is provided in the
SupportedAssistanceData property.
* A new list of URLs from where the aassistance data may be
downloaded is also provided in a new AssistanceDataServers
property.
* A new InjectAssistanceData() method is provided, to perform the
data injection in the module once it's been downloaded to the host
system.
The UE modes of operation for LTE are defined in 3GPP TS 24.301 (e.g.
section 4.3 in v10.3.0):
* PS mode 1: EPS only, 'voice centric'
* PS mode 2: EPS only, 'data centric'
* CS/PS mode 1: EPS and non-EPS, 'voice centric'
* CS/PS mode 2: EPS and non-EPS, 'data centric'
The mode specifies, among other things, how the UE should behave w.r.t
CS fallback depending on the capabilities reported by the network.
Introduce "sms only" and "CSFB not preferred" home/roaming states to be reported
for the CS context, while already registered on LTE.
Based on 3GPP TS 27.007 v13.5.0.
v4: modems/providers may not return DNS servers and not all modems
support DHCP, so lack of DNS servers should not indicate a bearer
IP method of "DHCP". IP config daemon/scripts already have to handle
missing DNS anyway.
v6: IPv6 requires SLAAC or DHCPv6 as part of the specification, so for
now we assume modems will support it. Provide all the info the modem
sent, but if there is any missing information use an IP method of
"DHCP" to indicate that info should be obtained via SLAAC/DHCPv6. Only
use an IP method of "STATIC" when all basic properties are given by
the modem.
Standard GPS setup (raw/nmea) will both enable the GPS module and take full
control of the GPS port. This prevents other processes from reading the NMEA
traces from e.g. a tty. In order to handle this, a new 'unmanaged' GPS location
source is introduced, which will just enable/disable the GPS module, without
reading anything from the GPS port. Of course, both raw/nmea and unmanaged
setups cannot be enabled at the same time.
Even if the IPv6 bearer method is DHCP, the client should use SLAAC
(eg, IPv6 Router Solicitations, Router Adverisements, and possibly
DHCPv6) to determine the correct prefix and DNS information. In
some cases, even with the DHCP method, and IPv6 "address" will be
given which should be assigned to the data port before beginning
an IP addressing as the mobile network may expect this address
to be used.
We will expose a new 'Ports' property listing all ports currently known by a
given modem. Ports which are not used but are detected as being part of the
modem will be listed with an 'unknown' port type.
This change uses the new 'MMModemPortType' enum and the new 'MMModemPortInfo'
helper struct to handle these values in libmm-glib. The already available
'MMPortType' enum hasn't been re-used for the interface because it contains
values that we don't need (e.g. IGNORED).
The port list is now also included in the modem information command of mmcli:
$ sudo mmcli -m 0
/org/freedesktop/ModemManager1/Modem/0 (device id '97b7b99e3e2bea103880545b619fb05a3cc81b26')
-------------------------
System | device: '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4'
| drivers: 'qcserial, qmi_wwan'
| plugin: 'Gobi'
| primary port: 'cdc-wdm0'
| ports: 'ttyUSB0 (qcdm), ttyUSB1 (at), cdc-wdm0 (qmi), wwp0s29u1u4 (net)'
https://bugzilla.gnome.org/show_bug.cgi?id=702678
And also make it a list of masks, specifying which are the specific combinations
supported, not just one mask with all.
E.g.:
-------------------------
Hardware | manufacturer: 'Sierra Wireless, Incorporated'
| model: 'MC7710'
| revision: 'SWI9200X_03.05.19.04ap r5475 carmd-en-10527 2012/09/17 17:57:14'
| supported: 'gsm-umts
| gsm-umts, lte'
| current: 'gsm-umts, lte'
| equipment id: '358178040668164'
We want to expose in the Modem interface the list of supported IP families, and
the easiest way to do so is to have the IP family as flags, and provide in the
interface a single enum.
Also, a value of 0 for a MMBearerIpFamily specifies that no flags are set, so
just rename it to 'NONE'.
And add a new 'ANY' value which sets all flags to 1.
We don't want to support only 'relative' validity, so don't assume that the
Validity property will always be a uint32 value.
Instead, we define the Validity propery as '(uv)' tuple, where the first value
(a MMSmsValidityType) specifies the type of validity, and the second value is
a variant formatted accordingly to what the validity type specifies (e.g. a
uint32 value if the type is MM_SMS_VALIDITY_TYPE_RELATIVE).
For bearers using STATIC or DHCP IP method, the modem itself is the one
negotiating authentication with the network. The new `allowed-auth' property
allows users to specify which authentication method(s) are allowed to be used.
See the following NetworkManager commit for more reference:
commit 34aef8aaaa09b7473b9496aa49e550bd2def03f8
Author: Andrew Bird <ajb@spheresystems.co.uk>
Date: Thu Mar 15 16:19:43 2012 -0500
Instead of using a predefined set of string values for 'ip-type' in
Modem.CreateBearer() and Simple.Connect(), we'll use an enumeration. The
implementation will then need to convert the requested IP family type to e.g.
the correct PDP type in 3GPP modems.
This change also consolidates the use of enums in dictionary properties when
possible to do so, as with the Rm Protocol.
Modems which end up being found unusable (e.g. no SIM, fatal SIM error, no
capabilities) will be exposed in DBus, but just with the Modem interface and
in a FAILED state which allows no actions.
We need to define a state to be used while the modem is being initialized, so
that we forbid any operation on the modem on already exported interfaces, while
there are interfaces pending to get exported.
This Initializing state will also cover the state between having the SIM
unlocked (which launches re-initialization) and being completely initialized.
