Commit bba71ef1 authored by Luiz Augusto von Dentz's avatar Luiz Augusto von Dentz
Browse files

Bluetooth: hci_sync: Use address filtering when HCI_PA_SYNC is set 



If HCI_PA_SYNC flag is set it means there is a Periodic Advertising
Synchronization pending, so this attempts to locate the address passed
to HCI_OP_LE_PA_CREATE_SYNC and program it in the accept list so only
reports with that address are processed.

Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
parent 168d9bf9

net/bluetooth/hci_sync.c

+35 −10
Original line number Diff line number Diff line
@@ -2562,6 +2562,16 @@ static struct conn_params *conn_params_copy(struct list_head *list, size_t *n) 
	return p;

}



/* Clear LE Accept List */

static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)

{

	if (!(hdev->commands[26] & 0x80))

		return 0;



	return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,

				     HCI_CMD_TIMEOUT);

}



/* Device must not be scanning when updating the accept list.

 *

 * Update is done using the following sequence:
@@ -2610,6 +2620,31 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev) 
		goto done;

	}



	/* Force address filtering if PA Sync is in progress */

	if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) {

		struct hci_cp_le_pa_create_sync *sent;



		sent = hci_sent_cmd_data(hdev, HCI_OP_LE_PA_CREATE_SYNC);

		if (sent) {

			struct conn_params pa;



			memset(&pa, 0, sizeof(pa));



			bacpy(&pa.addr, &sent->addr);

			pa.addr_type = sent->addr_type;



			/* Clear first since there could be addresses left

			 * behind.

			 */

			hci_le_clear_accept_list_sync(hdev);



			num_entries = 1;

			err = hci_le_add_accept_list_sync(hdev, &pa,

							  &num_entries);

			goto done;

		}

	}



	/* Go through the current accept list programmed into the

	 * controller one by one and check if that address is connected or is

	 * still in the list of pending connections or list of devices to
@@ -4216,16 +4251,6 @@ static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev) 
				     0, NULL, HCI_CMD_TIMEOUT);

}



/* Clear LE Accept List */

static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)

{

	if (!(hdev->commands[26] & 0x80))

		return 0;



	return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,

				     HCI_CMD_TIMEOUT);

}



/* Read LE Resolving List Size */

static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev)

{