Hi, With qmi modems I am using (quectel EG25, sierra MC7304), sometimes I don't have CellId and LocationAreaCode properties in netreg properties while I am registered. Example:
root@klk-wiis-020001:~ # dbus-send --system --type=method_call --print-reply --dest=org.ofono /quectelqmi_0 org.ofono.NetworkRegistration.GetProperties method return time=1561022820.781396 sender=:1.8 -> destination=:1.25 serial=96 reply_serial=2 array [ dict entry( string "Status" variant string "registered" ) dict entry( string "Mode" variant string "auto" ) dict entry( string "Technology" variant string "lte" ) dict entry( string "MobileCountryCode" variant string "208" ) dict entry( string "MobileNetworkCode" variant string "10" ) dict entry( string "Name" variant string "SFR" ) dict entry( string "Strength" variant byte 40 ) ] CellId and LocationAreaCode come from Current serving system info indication in QMI protocol. These indications contains many parameters and most of them are optional. What's happening here is: - first serving system info indication indicates modem is registered, gives CellId and LAC - another serving system info indication indicates modem is registered,and give no information on CellId and LAC When the second indication is processed, ofono_netreg_status_notify is called with lac and cellid equal to -1. As a consequence, corresponding NetworkRegistration properties are removed. Here are traces from ofono when problem occurs: 2019-06-20T09:22:43.709727+00:00 klk-wiis-020001 ofonod[736]: oFono version 1.24 2019-06-20T09:22:45.683101+00:00 klk-wiis-020001 ofonod[736]: ofono_sim_register /quectelqmi_0 isPresent:0 2019-06-20T09:22:45.684212+00:00 klk-wiis-020001 ofonod[736]: sim_inserted_update modem /quectelqmi_0 isPresent:1 2019-06-20T09:22:45.685682+00:00 klk-wiis-020001 ofonod[736]: Interface org.ofono.AllowedAccessPoints not found on the interface_list 2019-06-20T09:22:45.778324+00:00 klk-wiis-020001 ofonod[736]: Requested file structure differs from SIM: 6fb7 2019-06-20T09:22:46.258948+00:00 klk-wiis-020001 ofonod[736]: sim_inserted_update modem /quectelqmi_0 isPresent:0 2019-06-20T09:22:46.260482+00:00 klk-wiis-020001 ofonod[736]: Interface org.ofono.AllowedAccessPoints not found on the interface_list 2019-06-20T09:22:46.898106+00:00 klk-wiis-020001 ofonod[736]: sim_inserted_update modem /quectelqmi_0 isPresent:1 2019-06-20T09:22:46.899788+00:00 klk-wiis-020001 ofonod[736]: Interface org.ofono.AllowedAccessPoints not found on the interface_list 2019-06-20T09:22:47.155130+00:00 klk-wiis-020001 ofonod[736]: Requested file structure differs from SIM: 6fb7 2019-06-20T09:22:48.626979+00:00 klk-wiis-020001 ofonod[736]: Unable to read waiting messages numbers from SIM 2019-06-20T09:22:48.818950+00:00 klk-wiis-020001 ofonod[736]: Unable to read mailbox identifies from SIM 2019-06-20T09:22:48.915000+00:00 klk-wiis-020001 ofonod[736]: ofono_netreg_status_notify modem /quectelqmi_0 status 2 lac -1 cellid -1 tech -1 2019-06-20T09:22:48.947207+00:00 klk-wiis-020001 ofonod[736]: ofono_gprs_status_notify modem /quectelqmi_0 status 0 2019-06-20T09:22:49.010982+00:00 klk-wiis-020001 ofonod[736]: ofono_netreg_status_notify modem /quectelqmi_0 status 2 lac -1 cellid -1 tech 7 2019-06-20T09:22:49.714986+00:00 klk-wiis-020001 ofonod[736]: ofono_netreg_status_notify modem /quectelqmi_0 status 1 lac 65534 cellid 1076227 tech 7 2019-06-20T09:22:49.717442+00:00 klk-wiis-020001 ofonod[736]: CRO set_registration_cellid netreg->cellid: -1 ci: 1076227 2019-06-20T09:22:49.721963+00:00 klk-wiis-020001 ofonod[736]: ofono_gprs_status_notify modem /quectelqmi_0 status 1 2019-06-20T09:22:49.724312+00:00 klk-wiis-020001 ofonod[736]: CRO network_get_properties netreg->cellid: 1076227 2019-06-20T09:22:49.779005+00:00 klk-wiis-020001 ofonod[736]: ofono_netreg_status_notify modem /quectelqmi_0 status 1 lac -1 cellid -1 tech 7 2019-06-20T09:22:49.779508+00:00 klk-wiis-020001 ofonod[736]: CRO set_registration_cellid netreg->cellid: 1076227 ci: -1 2019-06-20T09:26:46.610671+00:00 klk-wiis-020001 ofonod[736]: CRO network_get_properties netreg->cellid: -1 I see two ways to fix this problem: 1) modify QMI modem driver to remember LAC and CellId inside the driver. When a notification arrives without CellId or LAC information, use remembered information. The drawback of this solution is that these information are remembered twice: in driver and in core. 2) modify core to add a way for drivers to say that these parameters are not modified. The drawback of this solution is that it is a change in core (even a change in core interface with drivers) I assume that solution 1 is better of this problem is for QMI modems only. I assume that solution 2 is better if some other drivers can have the same kind of problems. What do you think? How should I fix this problem? Will a change in driver/core interface be helpful? Best Regards, Christophe Ronco _______________________________________________ ofono mailing list ofono@ofono.org https://lists.ofono.org/mailman/listinfo/ofono
