commit 3baef810462746cd5a085c1e1416829d2af2622d
author Jaganath Kanakkassery <jaganath.k.os@gmail.com> Fri Jul 06 17:05:27 2018 +0530
committer Marcel Holtmann <marcel@holtmann.org> Fri Jul 06 22:41:17 2018 +0200
tree 1e972b2c7ef828d17d9a1e780db07abc8383c26e
parent 1b0707a781eeaeeaacb464e18bb3f049b99b496b

Bluetooth: Introduce helpers for LE set scan start and complete

Introduce a helper hci_req_start_scan() which starts an LE
scan and call it from passive_Scan() and active_scan().
There is not functionality change in this patch.

This is basically done to enable extended scanning if the
controller supports which will be done in the subsequent
patch

Signed-off-by: Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/hci_request.c

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index e44d347..76dcc3f 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -767,10 +767,30 @@ static bool scan_use_rpa(struct hci_dev *hdev)
 	return hci_dev_test_flag(hdev, HCI_PRIVACY);
 }
 
-void hci_req_add_le_passive_scan(struct hci_request *req)
+static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
+			       u16 window, u8 own_addr_type, u8 filter_policy)
 {
 	struct hci_cp_le_set_scan_param param_cp;
 	struct hci_cp_le_set_scan_enable enable_cp;
+
+	memset(&param_cp, 0, sizeof(param_cp));
+	param_cp.type = type;
+	param_cp.interval = cpu_to_le16(interval);
+	param_cp.window = cpu_to_le16(window);
+	param_cp.own_address_type = own_addr_type;
+	param_cp.filter_policy = filter_policy;
+	hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+		    &param_cp);
+
+	memset(&enable_cp, 0, sizeof(enable_cp));
+	enable_cp.enable = LE_SCAN_ENABLE;
+	enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
+	hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+		    &enable_cp);
+}
+
+void hci_req_add_le_passive_scan(struct hci_request *req)
+{
 	struct hci_dev *hdev = req->hdev;
 	u8 own_addr_type;
 	u8 filter_policy;
@@ -804,20 +824,8 @@ void hci_req_add_le_passive_scan(struct hci_request *req)
 	    (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
 		filter_policy |= 0x02;
 
-	memset(&param_cp, 0, sizeof(param_cp));
-	param_cp.type = LE_SCAN_PASSIVE;
-	param_cp.interval = cpu_to_le16(hdev->le_scan_interval);
-	param_cp.window = cpu_to_le16(hdev->le_scan_window);
-	param_cp.own_address_type = own_addr_type;
-	param_cp.filter_policy = filter_policy;
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
-		    &param_cp);
-
-	memset(&enable_cp, 0, sizeof(enable_cp));
-	enable_cp.enable = LE_SCAN_ENABLE;
-	enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
-		    &enable_cp);
+	hci_req_start_scan(req, LE_SCAN_PASSIVE, hdev->le_scan_interval,
+			   hdev->le_scan_window, own_addr_type, filter_policy);
 }
 
 static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
@@ -2010,8 +2018,6 @@ static int active_scan(struct hci_request *req, unsigned long opt)
 {
 	uint16_t interval = opt;
 	struct hci_dev *hdev = req->hdev;
-	struct hci_cp_le_set_scan_param param_cp;
-	struct hci_cp_le_set_scan_enable enable_cp;
 	u8 own_addr_type;
 	int err;
 
@@ -2050,22 +2056,8 @@ static int active_scan(struct hci_request *req, unsigned long opt)
 	if (err < 0)
 		own_addr_type = ADDR_LE_DEV_PUBLIC;
 
-	memset(&param_cp, 0, sizeof(param_cp));
-	param_cp.type = LE_SCAN_ACTIVE;
-	param_cp.interval = cpu_to_le16(interval);
-	param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
-	param_cp.own_address_type = own_addr_type;
-
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
-		    &param_cp);
-
-	memset(&enable_cp, 0, sizeof(enable_cp));
-	enable_cp.enable = LE_SCAN_ENABLE;
-	enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
-
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
-		    &enable_cp);
-
+	hci_req_start_scan(req, LE_SCAN_ACTIVE, interval, DISCOV_LE_SCAN_WIN,
+			   own_addr_type, 0);
 	return 0;
 }