Commit 0431a43c authored May 31, 2012 by Andre Guedes Committed by Johan Hedberg Jun 05, 2012

Bluetooth: Filter duplicated reports in LE scan



This patch enables filtering duplicated advertising reports during
LE scan.

Some LE devices advertise using very small intervals generating lots
of equal advertising report events to the host. Each event generates
a mgmt_device_found event which is copied to userspace.

Enabling this feature, duplicated advertising reports are filtered
at controller's link layer. This way, the controller doesn't wake up
the host to report duplicated advertising reports and, consequently,
less data is copied to userspace.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

parent 7e1af8a3

net/bluetooth/hci_core.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1526,6 +1526,7 @@ static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt)

		memset(&cp, 0, sizeof(cp));
		cp.enable = 1;
		cp.filter_dup = 1;

		hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
		}

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