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@xxxxxxxxxxxxx> --- net/bluetooth/hci_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 979556a..cf39e95 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -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); } -- 1.7.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
