10:18 a.m.
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
4:20 p.m.
Hi Christophe,
On 06/20/2019 05:18 AM, Christophe Ronco wrote:
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.
This is the preferred solution...
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?
The general rule is that oFono follows 27.007 interface whenever
possible. Any deviations from 'idealized' 27.007 behavior have to be
handled by the driver.
27.007 is generally understood to always include lac/ci on all updates,
so I think qmimodem is stuck caching the lac/ci info if the firmware
doesn't provide it in all cases.
Regards,
-Denis
1:29 p.m.
New subject: [PATCH 1/1] qmimodem: remember lac and cellid
Lac and cellid information are optional in ss_info notifications.
Remember them in order to give a correct information each time a
notification is received.
---
drivers/qmimodem/network-registration.c | 53 ++++++++++++++++++++++-----------
1 file changed, 35 insertions(+), 18 deletions(-)
diff --git a/drivers/qmimodem/network-registration.c
b/drivers/qmimodem/network-registration.c
index 1fccb57..04f20c6 100644
--- a/drivers/qmimodem/network-registration.c
+++ b/drivers/qmimodem/network-registration.c
@@ -42,6 +42,8 @@ struct netreg_data {
struct qmi_service *nas;
struct ofono_network_operator operator;
uint8_t current_rat;
+ int lac;
+ int cellid;
bool is_roaming;
};
@@ -166,6 +168,31 @@ static bool extract_ss_info(struct qmi_result *result, int *status,
return true;
}
+static int remember_ss_info(struct netreg_data *data, int status, int lac,
+ int cellid, enum roaming_status roaming)
+{
+ if (roaming == ROAMING_STATUS_ON)
+ data->is_roaming = true;
+ else if (roaming == ROAMING_STATUS_OFF)
+ data->is_roaming = false;
+
+ if (status == QMI_NAS_REGISTRATION_STATE_REGISTERED) {
+ if (lac >= 0)
+ data->lac = lac;
+ if (cellid >= 0)
+ data->cellid = cellid;
+ } else {
+ data->lac = -1;
+ data->cellid = -1;
+ }
+
+ if (status == QMI_NAS_REGISTRATION_STATE_REGISTERED &&
+ data->is_roaming)
+ status = NETWORK_REGISTRATION_STATUS_ROAMING;
+
+ return status;
+}
+
static void ss_info_notify(struct qmi_result *result, void *user_data)
{
struct ofono_netreg *netreg = user_data;
@@ -183,16 +210,10 @@ static void ss_info_notify(struct qmi_result *result, void
*user_data)
&data->operator))
return;
- if (roaming == ROAMING_STATUS_ON)
- data->is_roaming = true;
- else if (roaming == ROAMING_STATUS_OFF)
- data->is_roaming = false;
-
- if (status == QMI_NAS_REGISTRATION_STATE_REGISTERED &&
- data->is_roaming)
- status = NETWORK_REGISTRATION_STATUS_ROAMING;
+ status = remember_ss_info(data, status, lac, cellid, roaming);
- ofono_netreg_status_notify(netreg, status, lac, cellid, tech);
+ ofono_netreg_status_notify(netreg, status, data->lac, data->cellid,
+ tech);
}
static void get_ss_info_cb(struct qmi_result *result, void *user_data)
@@ -216,16 +237,10 @@ static void get_ss_info_cb(struct qmi_result *result, void
*user_data)
return;
}
- if (roaming == ROAMING_STATUS_ON)
- data->is_roaming = true;
- else if (roaming == ROAMING_STATUS_OFF)
- data->is_roaming = false;
-
- if (status == QMI_NAS_REGISTRATION_STATE_REGISTERED &&
- data->is_roaming)
- status = NETWORK_REGISTRATION_STATUS_ROAMING;
+ status = remember_ss_info(data, status, lac, cellid, roaming);
- CALLBACK_WITH_SUCCESS(cb, status, lac, cellid, tech, cbd->data);
+ CALLBACK_WITH_SUCCESS(cb, status, data->lac, data->cellid, tech,
+ cbd->data);
}
static void qmi_registration_status(struct ofono_netreg *netreg,
@@ -613,6 +628,8 @@ static int qmi_netreg_probe(struct ofono_netreg *netreg,
data->current_rat = QMI_NAS_NETWORK_RAT_NO_CHANGE;
data->is_roaming = false;
+ data->lac = -1;
+ data->cellid = -1;
ofono_netreg_set_data(netreg, data);
--
2.7.4
6:20 a.m.
New subject: [PATCH 1/1] qmimodem: remember lac and cellid
Hi Christophe,
On 7/17/19 8:29 AM, Christophe Ronco wrote:
Lac and cellid information are optional in ss_info notifications.
Remember them in order to give a correct information each time a
notification is received.
---
drivers/qmimodem/network-registration.c | 53 ++++++++++++++++++++++-----------
1 file changed, 35 insertions(+), 18 deletions(-)
Applied, thanks.
Regards,
-Denis
827
days inactive
856
days old
3 comments
2 participants
participants (2)
-
Christophe Ronco -
Denis Kenzior