Aleksander Morgado 82b574a6e7 broadband-modem-mbim: ignore SIM swap events during a slot switch action
When we explicitly request to perform a SIM slot switch operation, we
should ignore the 'slot info status' and 'subscriber ready status'
indications that report an active SIM slot change, or otherwise they'll
end up interfering with the correct reporting of the slot switch
operation.

We could have attempted to complete the slot switch operation early
using the indications, but that solution would have forced us to
assume that theinfo in the indications is the one we had requested,
which is not easy because the 'slot info status' indication is
reported once for each slot, so a single SIM slot switch operation
triggers multiple 'slot info status' indications, as well as
additional 'subscriber ready status' indications reporting the same.

Fixes suggested by Pavan Holla <pholla@chromium.org> and tested by
Jinjian Song <Jinjian.Song@fibocom.com>.

Fixes https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/550
2022-05-20 09:03:54 +00:00
2021-09-07 10:55:43 +00:00
2022-04-28 12:02:02 +02:00
2019-09-04 10:37:39 -07:00
2022-03-28 10:21:27 +02:00
2013-08-14 13:30:35 +02:00
2021-08-10 00:01:01 +02:00
2013-08-14 15:43:28 +02:00
2021-02-05 14:56:59 +01:00
2018-01-25 09:52:12 +01:00

ModemManager.
ModemManager provides a unified high level API for communicating with mobile
broadband modems, regardless of the protocol used to communicate with the
actual device (Generic AT, vendor-specific AT, QCDM, QMI, MBIM...).

Using.
ModemManager is a system daemon and is not meant to be used directly from
the command line. However, since it provides a DBus API, it is possible to use
'dbus-send' commands or the new 'mmcli' command line interface to control it
from the terminal. The devices are queried from udev and automatically updated
based on hardware events, although a manual re-scan can also be requested to
look for RS232 modems.

Implementation.
ModemManager is a DBus system bus activated service (meaning it's started
automatically when a request arrives). It is written in C, using glib and gio.
Several GInterfaces specify different features that the modems support,
including the generic MMIfaceModem3gpp and MMIfaceModemCdma which provide basic
operations for 3GPP (GSM, UMTS, LTE) or CDMA (CDMA1x, EV-DO) modems. If a given
feature is not available in the modem, the specific interface will not be
exported in DBus.

Plugins.
Plugins are loaded on startup, and must implement the MMPlugin interface. It
consists of a couple of methods which tell the daemon whether the plugin
supports a port and to create custom MMBroadbandModem implementations. It most
likely makes sense to derive custom modem implementations from one of the
generic classes and just add (or override) operations which are not standard.
There are multiple fully working plugins in the plugins/ directory that can be
used as an example for writing new plugins. Writing new plugins is highly
encouraged! The plugin API is open for changes, so if you're writing a plugin
and need to add or change some public method, feel free to suggest it!

License.
The ModemManager and mmcli binaries are both GPLv2+.
The libmm-glib library is LGPLv2+.

Code of Conduct.
Please note that this project is released with a Contributor Code of Conduct.
By participating in this project you agree to abide by its terms, which you can
find in the following link:
  https://www.freedesktop.org/wiki/CodeOfConduct
CoC issues may be raised to the project maintainers at the following address:
  modemmanager-devel-owner@lists.freedesktop.org
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