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Bluetooth: Add simultaneous dual mode scan

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When doing scan through mgmt api, some controllers can do both le and
classic scan at same time. They can be distinguished by
HCI_QUIRK_SIMULTANEOUS_DISCOVERY set.

This patch enables them to use this feature when doing dual mode scan.
Instead of doing le, then classic scan, both scans are run at once.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Jakub Pawlowski
2015-03-17 09:04:14 -07:00
committed by Johan Hedberg
parent 812abb13a9
commit 07d2334ae7
3 changed files with 70 additions and 10 deletions
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34
net/bluetooth/mgmt.c
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@@ -1408,9 +1408,10 @@ static bool hci_stop_discovery(struct hci_request *req)
switch (hdev->discovery.state) {
case DISCOVERY_FINDING:
if (test_bit(HCI_INQUIRY, &hdev->flags)) {
if (test_bit(HCI_INQUIRY, &hdev->flags))
hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
} else {
if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
cancel_delayed_work(&hdev->le_scan_disable);
hci_req_add_le_scan_disable(req);
}
@@ -4019,6 +4020,22 @@ static bool trigger_discovery(struct hci_request *req, u8 *status)
break;
case DISCOV_TYPE_INTERLEAVED:
if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
&hdev->quirks)) {
/* During simultaneous discovery, we double LE scan
* interval. We must leave some time for the controller
* to do BR/EDR inquiry.
*/
if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2,
status))
return false;
if (!trigger_bredr_inquiry(req, status))
return false;
return true;
}
if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
*status = MGMT_STATUS_NOT_SUPPORTED;
return false;
@@ -4072,7 +4089,18 @@ static void start_discovery_complete(struct hci_dev *hdev, u8 status,
timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
break;
case DISCOV_TYPE_INTERLEAVED:
timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
/* When running simultaneous discovery, the LE scanning time
* should occupy the whole discovery time sine BR/EDR inquiry
* and LE scanning are scheduled by the controller.
*
* For interleaving discovery in comparison, BR/EDR inquiry
* and LE scanning are done sequentially with separate
* timeouts.
*/
if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
else
timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
break;
case DISCOV_TYPE_BREDR:
timeout = 0;