qcacmn: Add cfg80211 scan start and stop command

Add cfg80211 scan start and scan stop commands.

Change-Id: I20b6c7743496ae82cc3a93befb5b68812047ec1a
CRs-Fixed: 1095299

os_if/linux/scan/inc/wlan_cfg80211_scan.h

@@ -28,10 +28,15 @@
 #include <linux/netdevice.h>
 #include <net/cfg80211.h>
 #include <qca_vendor.h>
+#include <wlan_scan_public_structs.h>
 #include <qdf_list.h>
 #include <qdf_types.h>
 #include <wlan_scan_ucfg_api.h>
 
+
+/* Max number of scans allowed from userspace */
+#define WLAN_MAX_SCAN_COUNT 8
+
 #ifdef WLAN_ENABLE_AGEIE_ON_SCAN_RESULTS
 /* GPS application requirement */
 #define QCOM_VENDOR_IE_ID 221
@@ -40,6 +45,11 @@
 #define QCOM_OUI3         0xC6
 #define QCOM_VENDOR_IE_AGE_TYPE  0x100
 #define QCOM_VENDOR_IE_AGE_LEN   (sizeof(qcom_ie_age) - 2)
+#define SCAN_DONE_EVENT_BUF_SIZE 4096
+#define INVAL_SCAN_ID        0xFFFFFFFF
+#define INVAL_VDEV_ID        0xFFFFFFFF
+#define INVAL_PDEV_ID        0xFFFFFFFF
+
 
 /**
  * typedef struct qcom_ie_age - age ie
@@ -72,16 +82,55 @@ typedef struct {
 /**
  * struct osif_scan_pdev - OS scan private strcutre
  * scan_req_q: Scan request queue
+ * req_id: Scan request Id
 */
 struct osif_scan_pdev{
 	qdf_list_t scan_req_q;
+	wlan_scan_requester req_id;
+};
+
+/*
+ * enum scan_source - scan request source
+ * @NL_SCAN: Scan initiated from NL
+ * @VENDOR_SCAN: Scan intiated from vendor command
+ */
+enum scan_source {
+	NL_SCAN,
+	VENDOR_SCAN,
 };
 
+/**
+ * struct scan_req - Scan Request entry
+ * @node : List entry element
+ * @scan_request: scan request holder
+ * @scan_id: scan identifier used across host layers which is generated at WMI
+ * @source: scan request originator (NL/Vendor scan)
+ *
+ * Scan request linked list element
+ */
+struct scan_req {
+	qdf_list_node_t node;
+	struct cfg80211_scan_request *scan_request;
+	uint32_t scan_id;
+	uint8_t source;
+};
+
+
+/**
+ * wlan_cfg80211_scan_priv_init() - API to initialize cfg80211 scan
+ * @pdev: Pointer to net device
+				 *
+ * API to initialize cfg80211 scan module.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS wlan_cfg80211_scan_priv_init(struct wlan_objmgr_pdev *pdev);
+
 /**
  * wlan_cfg80211_scan() - API to process cfg80211 scan request
- * @wiphy: Pointer to wiphy
- * @dev: Pointer to net device
+ * @pdev: Pointer to pdev
  * @request: Pointer to scan request
+ * @source: source of scan request
  *
  * API to trigger scan and update cfg80211 scan database.
  * scan dump command can be used to fetch scan results
@@ -89,11 +138,9 @@ struct osif_scan_pdev{
  *
  * Return: 0 for success, non zero for failure
  */
-int wlan_cfg80211_scan(struct wiphy *wiphy,
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0))
-		struct net_device *dev,
-#endif
-		struct cfg80211_scan_request *request);
+int wlan_cfg80211_scan(struct wlan_objmgr_pdev *pdev,
+		struct cfg80211_scan_request *request,
+		uint8_t source);
 
 /**
  * wlan_cfg80211_inform_bss_frame() - API to inform beacon to cfg80211
@@ -107,4 +154,44 @@ int wlan_cfg80211_scan(struct wiphy *wiphy,
  */
 void wlan_cfg80211_inform_bss_frame(struct wlan_objmgr_pdev *pdev,
 	struct scan_cache_entry *scan_params);
+
+/**
+ * wlan_vendor_abort_scan() - API to vendor abort scan
+ * @pdev: Pointer to pdev
+ * @data: pointer to data
+ * @data_len: Data length
+ *
+ * API to abort scan through vendor command
+ *
+ * Return: 0 for success, non zero for failure
+ */
+int wlan_vendor_abort_scan(struct wlan_objmgr_pdev *pdev,
+				const void *data, int data_len);
+
+/**
+ * wlan_cfg80211_abort_scan() - API to abort scan through cfg80211
+ * @pdev: Pointer to pdev
+ *
+ * API to abort scan through cfg80211 request
+ *
+ * Return: 0 for success, non zero for failure
+ */
+int wlan_cfg80211_abort_scan(struct wlan_objmgr_pdev *pdev);
+
+/**
+ * wlan_abort_scan() - Generic API to abort scan request
+ * @pdev: Pointer to pdev
+ * @pdev_id: pdev id
+ * @vdev_id: vdev id
+ * @scan_id: scan id
+ *
+ * Generic API to abort scans
+ *
+ * Return: 0 for success, non zero for failure
+ */
+QDF_STATUS wlan_abort_scan(struct wlan_objmgr_pdev *pdev,
+				   uint32_t pdev_id,
+				   uint32_t vdev_id,
+				   wlan_scan_id scan_id);
+
 #endif