LTE is different from other 'GPRS' technologies in that a default bearer always gets set up when the modem registers to the network. Ofono has some support for this and this series tries to set this up for QMI modems.
The key to understanding this series is to understand that QMI modems do not automatically enable the network interface when connecting to an LTE network, even though the default bearer is already set up. A call to "start network" needs to be made in order to allow packets to flow. So the jist of this series is: i) detect network registration to LTE network ii) call ofono_gprs_cid_activated iii) in read_settings, start by calling "start network" ...and then there are some other adjustments in the series to make this all work. I've tested this with my EC21, both on LTE and UMTS networks. It all seems to work, including moving out of network connectivity and bringing the modem repeatedly online/offline. One open question at this point: * What happens if the connection manager calls deactivate_context on the default bearer context? I don't see that any other drivers guard against this, and the QMI driver will happily stop the network interface even though the default bearer is still up in the background. Jonas Bonn (13): qmi: duplicate callback data correctly qmi: fix typo gprs: release active contexts completely gprs: _cid_activated is an 'attaching' state gprs: set driver_attached when activating automatic contexts qmi: implement detach_shutdown method qmi: read_settings needs to call start network qmi: don't leak cbd and rely on destroy function qmi: activate default bearer context for LTE networks qmi: use destroy callback for activate_primary qmi: stop listening to packet service notifications qmi: rely on destroy callback qmi: consolidate ss_info handling functions drivers/qmimodem/gprs-context.c | 126 +++++++++++++--------------- drivers/qmimodem/gprs.c | 140 ++++++++++++++++++++++---------- drivers/qmimodem/nas.h | 2 +- drivers/qmimodem/network-registration.c | 73 +++++++---------- src/gprs.c | 22 ++++- 5 files changed, 205 insertions(+), 158 deletions(-) -- 2.9.3 _______________________________________________ ofono mailing list [email protected] https://lists.ofono.org/mailman/listinfo/ofono
