iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Bluetooth: Add support for background LE scanning

Browse Source 
If we have one or more devices with HCI_AUTO_CONN_REPORT we should do
background scanning and emit mgmt_device_found events. This patch
modifies the hci_update_background_scan() function to extend the
conditions needed to trigger scanning, and adds the necessary code to
process_adv_report() to emit mgmt_device_found events.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-07-02 22:42:02 +03:00 committed by Marcel Holtmann
parent 75ce208cc4
commit 0d2bf13462
2 changed files with 27 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/bluetooth/hci_core.c
View File

@ -5380,9 +5380,10 @@ void hci_update_background_scan(struct hci_dev *hdev)
hci_req_init(&req, hdev);
if (list_empty(&hdev->pend_le_conns)) {
/* If there is no pending LE connections, we should stop
* the background scanning.
if (list_empty(&hdev->pend_le_conns) && !hdev->pend_le_reports) {
/* If there is no pending LE connections or devices
* to be scanned for, we should stop the background
* scanning.
*/
/* If controller is not scanning we are done. */

25
net/bluetooth/hci_event.c
View File

@ -4225,11 +4225,32 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
bool match;
u32 flags;
/* Passive scanning shouldn't trigger any device found events */
/* Passive scanning shouldn't trigger any device found events,
* except for devices marked as CONN_REPORT for which we do send
* device found events.
*/
if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
struct hci_conn_params *param;
if (type == LE_ADV_IND || type == LE_ADV_DIRECT_IND)
check_pending_le_conn(hdev, bdaddr, bdaddr_type);
return;
if (!hdev->pend_le_reports)
return;
if (type == LE_ADV_DIRECT_IND)
return;
param = hci_conn_params_lookup(hdev, bdaddr, bdaddr_type);
if (!param || param->auto_connect != HCI_AUTO_CONN_REPORT)
return;
if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
else
flags = 0;
mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
rssi, flags, data, len, NULL, 0);
}
/* When receiving non-connectable or scannable undirected