qcacmn: API to add scan entry without posting to scheduler thread

Add an API to add scan entry without posting it to scheduler thread.
This will be used to update the beacon/probe during roaming to new AP.

Change-Id: Ia53ba194032eb953c5b102b0cc406db12e58f42d
CRs-Fixed: 2435404

umac/scan/core/src/wlan_scan_cache_db.c

@@ -731,9 +731,8 @@ static QDF_STATUS scm_add_update_entry(struct wlan_objmgr_psoc *psoc,
 	return QDF_STATUS_SUCCESS;
 }
 
-QDF_STATUS scm_handle_bcn_probe(struct scheduler_msg *msg)
+QDF_STATUS __scm_handle_bcn_probe(struct scan_bcn_probe_event *bcn)
 {
-	struct scan_bcn_probe_event *bcn;
 	struct wlan_objmgr_psoc *psoc;
 	struct wlan_objmgr_pdev *pdev = NULL;
 	struct scan_cache_entry *scan_entry;
@@ -745,7 +744,6 @@ QDF_STATUS scm_handle_bcn_probe(struct scheduler_msg *msg)
 	struct scan_cache_node *scan_node;
 	struct wlan_frame_hdr *hdr = NULL;
 
-	bcn = msg->bodyptr;
 	if (!bcn) {
 		scm_err("bcn is NULL");
 		return QDF_STATUS_E_INVAL;
@@ -870,6 +868,16 @@ free_nbuf:
 	return status;
 }
 
+QDF_STATUS scm_handle_bcn_probe(struct scheduler_msg *msg)
+{
+	if (!msg) {
+		scm_err("msg is NULL");
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+
+	return __scm_handle_bcn_probe(msg->bodyptr);
+}
+
 /**
  * scm_list_insert_sorted() - add the entries in scan_list in sorted way
  * @psoc: psoc ptr

umac/scan/core/src/wlan_scan_cache_db.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -65,7 +65,7 @@ struct scan_bcn_probe_event {
 
 /**
  * scm_handle_bcn_probe() - Process beacon and probe rsp
- * @bcn: beacon info;
+ * @msg: schedular msg with bcn info;
  *
  * API to handle the beacon/probe resp
  *
@@ -73,6 +73,17 @@ struct scan_bcn_probe_event {
  */
 QDF_STATUS scm_handle_bcn_probe(struct scheduler_msg *msg);
 
+/**
+ * __scm_handle_bcn_probe() - Process beacon and probe rsp
+ * @bcn: beacon info;
+ *
+ * API to handle the beacon/probe resp
+ *
+ * Return: QDF status.
+ */
+QDF_STATUS __scm_handle_bcn_probe(struct scan_bcn_probe_event *bcn);
+
+
 /**
  * scm_age_out_entries() - Age out entries older than aging time
  * @psoc: psoc pointer

umac/scan/dispatcher/inc/wlan_scan_api.h

@@ -154,4 +154,23 @@ void wlan_scan_cfg_get_conc_min_resttime(struct wlan_objmgr_psoc *psoc,
  */
 bool wlan_scan_is_snr_monitor_enabled(struct wlan_objmgr_psoc *psoc);
 
+/**
+ * wlan_scan_process_bcn_probe_rx_sync() - handle bcn without posting to
+ * scheduler thread
+ * @psoc: psoc context
+ * @buf: frame buf
+ * @params: rx event params
+ * @frm_type: frame type
+ *
+ * handle bcn without posting to scheduler thread, this should be called
+ * while caller is already in scheduler thread context
+ *
+ * Return: success or error code.
+ */
+QDF_STATUS
+wlan_scan_process_bcn_probe_rx_sync(struct wlan_objmgr_psoc *psoc,
+				    qdf_nbuf_t buf,
+				    struct mgmt_rx_event_params *rx_param,
+				    enum mgmt_frame_type frm_type);
+
 #endif

umac/scan/dispatcher/src/wlan_scan_api.c

@@ -175,3 +175,60 @@ bool wlan_scan_is_snr_monitor_enabled(struct wlan_objmgr_psoc *psoc)
 
 	return scan_obj->scan_def.scan_f_chan_stat_evnt;
 }
+
+QDF_STATUS
+wlan_scan_process_bcn_probe_rx_sync(struct wlan_objmgr_psoc *psoc,
+				    qdf_nbuf_t buf,
+				    struct mgmt_rx_event_params *rx_param,
+				    enum mgmt_frame_type frm_type)
+{
+	struct scan_bcn_probe_event *bcn = NULL;
+	QDF_STATUS status;
+
+	if ((frm_type != MGMT_PROBE_RESP) &&
+	   (frm_type != MGMT_BEACON)) {
+		scm_err("frame is not beacon or probe resp");
+		status = QDF_STATUS_E_INVAL;
+		goto free;
+	}
+	bcn = qdf_mem_malloc_atomic(sizeof(*bcn));
+
+	if (!bcn) {
+		scm_debug_rl("Failed to allocate memory for bcn");
+		status = QDF_STATUS_E_NOMEM;
+		goto free;
+	}
+	bcn->rx_data =
+		qdf_mem_malloc_atomic(sizeof(*rx_param));
+	if (!bcn->rx_data) {
+		scm_debug_rl("Failed to allocate memory for rx_data");
+		status = QDF_STATUS_E_NOMEM;
+		goto free;
+	}
+
+	if (frm_type == MGMT_PROBE_RESP)
+		bcn->frm_type = MGMT_SUBTYPE_PROBE_RESP;
+	else
+		bcn->frm_type = MGMT_SUBTYPE_BEACON;
+
+	status = wlan_objmgr_psoc_try_get_ref(psoc, WLAN_SCAN_ID);
+	if (QDF_IS_STATUS_ERROR(status)) {
+		scm_info("unable to get reference");
+		goto free;
+	}
+
+	bcn->psoc = psoc;
+	bcn->buf = buf;
+	qdf_mem_copy(bcn->rx_data, rx_param, sizeof(*rx_param));
+
+	return __scm_handle_bcn_probe(bcn);
+free:
+	if (bcn && bcn->rx_data)
+		qdf_mem_free(bcn->rx_data);
+	if (bcn)
+		qdf_mem_free(bcn);
+	if (buf)
+		qdf_nbuf_free(buf);
+
+	return status;
+}