From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
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: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
---
net/bluetooth/hci_sync.c | 45 +++++++++++++++++++++++++++++++---------
1 file changed, 35 insertions(+), 10 deletions(-)
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 669099cf9b1a..ab609089ac4c 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -2566,6 +2566,16 @@ 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:
@@ -2614,6 +2624,31 @@ 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
@@ -4220,16 +4255,6 @@ 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)
{
--
2.43.0
