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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>
This commit is contained in:
Andre Guedes 2014-02-26 20:21:55 -03:00 committed by Marcel Holtmann
parent 7d474e06ef
commit 8ef30fd3d1
2 changed files with 32 additions and 25 deletions
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1
include/net/bluetooth/hci_core.h
View File

@ -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);

56
net/bluetooth/hci_core.c
View File

@ -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);
}