Bluetooth: Create hci_req_add_le_passive_scan helper

This patches creates the public hci_req_add_le_passive_scan helper so
it can be re-used outside hci_core.c in the next patch.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 4b192d0..79a75ed 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1150,6 +1150,7 @@ void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
 
 void hci_req_add_le_scan_disable(struct hci_request *req);
+void hci_req_add_le_passive_scan(struct hci_request *req);
 
 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
                               const void *param, u32 timeout);

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 0b96f20..bbd085d 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -5115,6 +5115,36 @@ void hci_req_add_le_scan_disable(struct hci_request *req)
        hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
 }
 
+void hci_req_add_le_passive_scan(struct hci_request *req)
+{
+       struct hci_cp_le_set_scan_param param_cp;
+       struct hci_cp_le_set_scan_enable enable_cp;
+       struct hci_dev *hdev = req->hdev;
+       u8 own_addr_type;
+
+       /* Set require_privacy to true to avoid identification from
+        * unknown peer devices. Since this is passive scanning, no
+        * SCAN_REQ using the local identity should be sent. Mandating
+        * privacy is just an extra precaution.
+        */
+       if (hci_update_random_address(req, true, &own_addr_type))
+               return;
+
+       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;
+       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_DISABLE;
+       hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+                   &enable_cp);
+}
+
 static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
 {
        if (status)
@@ -5130,8 +5160,6 @@ static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
  */
 void hci_update_background_scan(struct hci_dev *hdev)
 {
-       struct hci_cp_le_set_scan_param param_cp;
-       struct hci_cp_le_set_scan_enable enable_cp;
        struct hci_request req;
        struct hci_conn *conn;
        int err;
@@ -5151,8 +5179,6 @@ void hci_update_background_scan(struct hci_dev *hdev)
 
                BT_DBG("%s stopping background scanning", hdev->name);
        } else {
-               u8 own_addr_type;
-
                /* If there is at least one pending LE connection, we should
                 * keep the background scan running.
                 */
@@ -5169,27 +5195,7 @@ void hci_update_background_scan(struct hci_dev *hdev)
                if (conn)
                        return;
 
-               /* Set require_privacy to true to avoid identification from
-                * unknown peer devices. Since this is passive scanning, no
-                * SCAN_REQ using the local identity should be sent. Mandating
-                * privacy is just an extra precaution.
-                */
-               if (hci_update_random_address(&req, true, &own_addr_type))
-                       return;
-
-               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;
-               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_DISABLE;
-               hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
-                           &enable_cp);
+               hci_req_add_le_passive_scan(&req);
 
                BT_DBG("%s starting background scanning", hdev->name);
        }