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Bluetooth: Add hci_do_le_scan()

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This patch adds to hci_core the hci_do_le_scan function which
should be used to scan LE devices.

In order to enable LE scan, hci_do_le_scan() sends commands (Set
LE Scan Parameters and Set LE Scan Enable) to the controller and
waits for its results. If commands were executed successfully a
delayed work is scheduled to disable the ongoing scanning after
some amount of time. This function blocks.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Andre Guedes
2012-02-03 17:47:59 -03:00
committed by Johan Hedberg
parent 6fbe195dc4
commit 7ba8b4be38
3 changed files with 92 additions and 3 deletions
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13
net/bluetooth/hci_event.c
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@@ -1031,6 +1031,8 @@ static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
__u8 status = *((__u8 *) skb->data);
BT_DBG("%s status 0x%x", hdev->name, status);
hci_req_complete(hdev, HCI_OP_LE_SET_SCAN_PARAM, status);
}
static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
@@ -1041,15 +1043,17 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
BT_DBG("%s status 0x%x", hdev->name, status);
if (status)
return;
cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
if (!cp)
return;
switch (cp->enable) {
case LE_SCANNING_ENABLED:
hci_req_complete(hdev, HCI_OP_LE_SET_SCAN_ENABLE, status);
if (status)
return;
set_bit(HCI_LE_SCAN, &hdev->dev_flags);
cancel_delayed_work_sync(&hdev->adv_work);
@@ -1061,6 +1065,9 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
break;
case LE_SCANNING_DISABLED:
if (status)
return;
clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
hci_dev_lock(hdev);