Some modems do require it, but some others won't (e.g. CDMA based ones), so
just make the operation optional, but only if the modem replies NoDeviceSupport.
https://bugzilla.gnome.org/show_bug.cgi?id=702419
It is quite common to have modems handled with QMI but with very limited
services implemented, e.g. without WMS:
[/dev/cdc-wdm0] QMI Device supports 5 services:
[/dev/cdc-wdm0] ctl (1.3)
[/dev/cdc-wdm0] wds (1.5)
[/dev/cdc-wdm0] dms (1.2)
[/dev/cdc-wdm0] nas (1.0)
[/dev/cdc-wdm0] cat (0.0)
We'll now fallback to use plain AT commands when no QMI WMS service is found.
The '--with-polkit' configure switch now supports more options than just yes
or no:
* strict: Active user needs to explicitly authenticate when peforming an
operation defined in the Device.Control, Messaging, Location or Contacts
interfaces. Polkit policy is set to 'auth_self_keep'.
* permissive: Active user doesn't need to explicitly authenticate when
peforming an operation defined in the Device.Control, Messaging, Location or
Contacts interfaces. Polkit policy is set to 'yes'.
* none: don't use polkit.
If '--with-polkit' is not given, usage will be automatically decided based on
the presence of the Polkit headers in the system (if headers found, strict
policy will be applied, otherwise none).
Also:
* '--with-polkit' is equivalent to '--with-polkit=strict'
* '--with-polkit=yes' is equivalent to '--with-polkit=strict'
* '--with-polkit=no' is equivalent to '--with-polkit=none'
* '--without-polkit' is equivalent to '--with-polkit=none'
By default, ModemManager will always apply the strict policy, in order to
protect the user from unwanted operations in the modem (e.g. getting the PIN
locked forever after wrong PIN/PUK unlock attempts).
https://bugzilla.gnome.org/show_bug.cgi?id=701740
Avoid setting up the Alias rule, which was a helper to let us 'disable' the
systemd service including dbus-activations. Without the Alias, 'disable' will
still let starting ModemManager through dbus-activation. If you really want to
fully disallow starting MM also through dbus-activation, you should 'mask' and
'unmask' the service.
E.g.:
$ sudo systemctl mask ModemManager
ln -s '/dev/null' '/etc/systemd/system/ModemManager.service'
$ sudo mmcli -L
error: couldn't find the ModemManager process in the bus
$ sudo systemctl unmask ModemManager
rm '/etc/systemd/system/ModemManager.service'
$ sudo mmcli -L
No modems were found
https://bugzilla.gnome.org/show_bug.cgi?id=701229
It sometimes provides a much better view of the supported modes than the WS46=?
command, which is not always properly implemented. E.g.:
Nokia N950:
---------------
at+ws46=?
(12)
OK
at*cnti=2
*CNTI: 2,GSM,GPRS,EDGE,UMTS,HSDPA,HSUPA
OK
Sierra AC313u
---------------
at+ws46=?
ERROR
at*cnti=2
*CNTI: 2,GSM,GPRS,EDGE,UMTS,HSDPA/HSUPA,HSPA+,LTE
OK
We may be asking to load supported modes while in locked state, so the commands
may fail. In order to re-load them properly once we're unlocked, we better just
return an error instead of setting defaults.
We won't allow changing modes or bands through Simple.Connect(). Applications
should instead look at the corresponding SupportedBands or SupportedModes, and
then use SetCurrentBands() or SetCurrentModes() explicitly.
Changes being:
* Don't rely on the band preference TLVs presence. The band preference TLVs are
always given, even if the modem doesn't support the specific capability right
away. E.g. a GSM/UMTS/LTE modem configured with 'gsm-umts' capability (no
'lte') still shows the LTE band preference TLV in the SSP responses.
* Don't automatically add LTE as current capability. We needed this when we
were not able to change capabilities, so that we didn't lose the ability to
set 4G mode as allowed.
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 now have a single 'CurrentModes' property which contains both values in a
tuple with signature "(uu)".
Also, rename 'SetAllowedModes()' to 'SetCurrentModes()', and update the list of
arguments expected to have a single "(uu)" tuple.
For CDMA-only devices, we will default to IPv4.
For 3GPP devices, we will use the AT+CGDCONT=? test command to query which are
the supported PDP types.
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.
