Bluetooth: Filter device found events based on RSSI threshold
Using Start Service Discovery allows to provide a RSSI threshold. This
patch implements support for filtering out device found events based
on the provided value.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index b6a0f3e..1715c91 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -6821,6 +6821,15 @@
return;
}
+ /* When using service discovery with a RSSI threshold, then check
+ * if such a RSSI threshold is specified. If a RSSI threshold has
+ * been specified, then all results with a RSSI smaller than the
+ * RSSI threshold will be dropped.
+ */
+ if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
+ rssi < hdev->discovery.rssi)
+ return;
+
/* Make sure that the buffer is big enough. The 5 extra bytes
* are for the potential CoD field.
*/