broadband-modem-qmi: implement network scan
The "NAS Network Scan" command replies with several optional TLVs. One of the TLVs gives the status of the network, using MCC/MNC as index; another one gives the radio access technology, also using MCC/MNC as index. But, several entries may have the same MCC/MNC, so there is no clear way to mix the results of both TLVs in the same element. We'll try to do a best guess, trying not to use the same RAT result twice, but this is really a best guess.
This commit is contained in:
Aleksander Morgado
@@ -26,6 +26,7 @@
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#include "ModemManager.h"
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#include "mm-log.h"
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#include "mm-errors-types.h"
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#include "mm-modem-helpers.h"
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#include "mm-iface-modem.h"
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#include "mm-iface-modem-3gpp.h"
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#include "mm-sim-qmi.h"
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@@ -1380,6 +1381,202 @@ modem_3gpp_load_enabled_facility_locks (MMIfaceModem3gpp *self,
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get_next_facility_lock_status (ctx);
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}
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/*****************************************************************************/
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/* Scan networks (3GPP interface) */
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static GList *
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modem_3gpp_scan_networks_finish (MMIfaceModem3gpp *self,
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GAsyncResult *res,
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GError **error)
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{
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if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (res), error))
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return NULL;
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/* We return the GList as it is */
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return (GList *) g_simple_async_result_get_op_res_gpointer (G_SIMPLE_ASYNC_RESULT (res));
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}
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static MMModem3gppNetworkAvailability
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network_availability_from_qmi_nas_network_status (QmiNasNetworkStatus qmi)
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{
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if (qmi & QMI_NAS_NETWORK_STATUS_CURRENT_SERVING)
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return MM_MODEM_3GPP_NETWORK_AVAILABILITY_CURRENT;
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if (qmi & QMI_NAS_NETWORK_STATUS_AVAILABLE) {
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if (qmi & QMI_NAS_NETWORK_STATUS_FORBIDDEN)
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return MM_MODEM_3GPP_NETWORK_AVAILABILITY_FORBIDDEN;
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return MM_MODEM_3GPP_NETWORK_AVAILABILITY_AVAILABLE;
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}
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return MM_MODEM_3GPP_NETWORK_AVAILABILITY_UNKNOWN;
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}
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static MM3gppNetworkInfo *
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get_3gpp_network_info (QmiMessageNasNetworkScanOutputNetworkInformationElement *element)
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{
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GString *aux;
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MM3gppNetworkInfo *info;
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info = g_new (MM3gppNetworkInfo, 1);
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info->status = network_availability_from_qmi_nas_network_status (element->network_status);
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aux = g_string_new ("");
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if (element->mcc >= 100)
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g_string_append_printf (aux, "%.3"G_GUINT16_FORMAT, element->mcc);
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else
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g_string_append_printf (aux, "%.2"G_GUINT16_FORMAT, element->mcc);
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if (element->mnc >= 100)
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g_string_append_printf (aux, "%.3"G_GUINT16_FORMAT, element->mnc);
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else
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g_string_append_printf (aux, "%.2"G_GUINT16_FORMAT, element->mnc);
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info->operator_code = g_string_free (aux, FALSE);
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info->operator_short = NULL;
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info->operator_long = g_strdup (element->description);
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info->access_tech = MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN;
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return info;
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}
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static MMModemAccessTechnology
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access_technology_from_qmi_rat (QmiNasRadioInterface interface)
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{
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switch (interface) {
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case QMI_NAS_RADIO_INTERFACE_CDMA_1X:
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return MM_MODEM_ACCESS_TECHNOLOGY_1XRTT;
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case QMI_NAS_RADIO_INTERFACE_CDMA_1XEVDO:
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return MM_MODEM_ACCESS_TECHNOLOGY_EVDO0;
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case QMI_NAS_RADIO_INTERFACE_GSM:
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return MM_MODEM_ACCESS_TECHNOLOGY_GSM;
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case QMI_NAS_RADIO_INTERFACE_UMTS:
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return MM_MODEM_ACCESS_TECHNOLOGY_UMTS;
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case QMI_NAS_RADIO_INTERFACE_LTE:
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return MM_MODEM_ACCESS_TECHNOLOGY_LTE;
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case QMI_NAS_RADIO_INTERFACE_TD_SCDMA:
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case QMI_NAS_RADIO_INTERFACE_AMPS:
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case QMI_NAS_RADIO_INTERFACE_NONE:
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default:
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return MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN;
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}
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}
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static MMModemAccessTechnology
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get_3gpp_access_technology (GArray *array,
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gboolean *array_used_flags,
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guint16 mcc,
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guint16 mnc)
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{
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guint i;
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for (i = 0; i < array->len; i++) {
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QmiMessageNasNetworkScanOutputRadioAccessTechnologyElement *element;
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if (array_used_flags[i])
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continue;
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element = &g_array_index (array, QmiMessageNasNetworkScanOutputRadioAccessTechnologyElement, i);
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if (element->mcc == mcc &&
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element->mnc == mnc) {
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array_used_flags[i] = TRUE;
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return access_technology_from_qmi_rat (element->rat);
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}
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}
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return MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN;
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}
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static void
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nas_network_scan_ready (QmiClientNas *client,
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GAsyncResult *res,
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GSimpleAsyncResult *simple)
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{
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QmiMessageNasNetworkScanOutput *output = NULL;
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GError *error = NULL;
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output = qmi_client_nas_network_scan_finish (client, res, &error);
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if (!output) {
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g_prefix_error (&error, "QMI operation failed: ");
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g_simple_async_result_take_error (simple, error);
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} else if (!qmi_message_nas_network_scan_output_get_result (output, &error)) {
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g_prefix_error (&error, "Couldn't scan networks: ");
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g_simple_async_result_take_error (simple, error);
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} else {
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GList *scan_result = NULL;
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GArray *info_array = NULL;
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if (qmi_message_nas_network_scan_output_get_network_information (output, &info_array, NULL)) {
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GArray *rat_array = NULL;
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gboolean *rat_array_used_flags = NULL;
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guint i;
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/* Get optional RAT array */
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qmi_message_nas_network_scan_output_get_radio_access_technology (output, &rat_array, NULL);
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if (rat_array)
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rat_array_used_flags = g_new0 (gboolean, rat_array->len);
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for (i = 0; i < info_array->len; i++) {
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QmiMessageNasNetworkScanOutputNetworkInformationElement *info_element;
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MM3gppNetworkInfo *info;
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info_element = &g_array_index (info_array, QmiMessageNasNetworkScanOutputNetworkInformationElement, i);
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info = get_3gpp_network_info (info_element);
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if (rat_array)
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info->access_tech = get_3gpp_access_technology (rat_array,
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rat_array_used_flags,
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info_element->mcc,
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info_element->mnc);
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scan_result = g_list_append (scan_result, info);
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}
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g_free (rat_array_used_flags);
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}
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/* We *require* a callback in the async method, as we're not setting a
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* GDestroyNotify callback */
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g_simple_async_result_set_op_res_gpointer (simple, scan_result, NULL);
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}
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if (output)
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qmi_message_nas_network_scan_output_unref (output);
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g_simple_async_result_complete (simple);
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g_object_unref (simple);
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}
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static void
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modem_3gpp_scan_networks (MMIfaceModem3gpp *self,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GSimpleAsyncResult *result;
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QmiClient *client = NULL;
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/* We will pass the GList in the GSimpleAsyncResult, so we must
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* ensure that there is a callback so that we get it properly
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* passed to the caller and deallocated afterwards */
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g_assert (callback != NULL);
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if (!ensure_qmi_client (MM_BROADBAND_MODEM_QMI (self),
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QMI_SERVICE_NAS, &client,
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callback, user_data))
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return;
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result = g_simple_async_result_new (G_OBJECT (self),
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callback,
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user_data,
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modem_3gpp_scan_networks);
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mm_dbg ("Scanning networks...");
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qmi_client_nas_network_scan (QMI_CLIENT_NAS (client),
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NULL,
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100,
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NULL,
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(GAsyncReadyCallback)nas_network_scan_ready,
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result);
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}
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/*****************************************************************************/
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/* First initialization step */
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@@ -1611,6 +1808,10 @@ iface_modem_3gpp_init (MMIfaceModem3gpp *iface)
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/* Initialization steps */
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iface->load_enabled_facility_locks = modem_3gpp_load_enabled_facility_locks;
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iface->load_enabled_facility_locks_finish = modem_3gpp_load_enabled_facility_locks_finish;
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/* Other actions */
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iface->scan_networks = modem_3gpp_scan_networks;
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iface->scan_networks_finish = modem_3gpp_scan_networks_finish;
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}
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static void
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