Bluetooth: hci_sync: Fix not using conn_timeout

When using hci_le_create_conn_sync it shall wait for the conn_timeout
since the connection complete may take longer than just 2 seconds.

Also fix the masking of HCI_EV_LE_ENHANCED_CONN_COMPLETE and
HCI_EV_LE_CONN_COMPLETE so they are never both set so we can predict
which one the controller will use in case of HCI_OP_LE_CREATE_CONN.

Fixes: 6cd29ec6ae5e3 ("Bluetooth: hci_sync: Wait for proper events when connecting LE")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 586f69d..e336e9c 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1489,6 +1489,14 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
 /* Extended advertising support */
 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
 
+/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
+ *
+ * C24: Mandatory if the LE Controller supports Connection State and either
+ * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
+ */
+#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
+                                        ext_adv_capable(dev))
+
 /* ----- HCI protocols ----- */
 #define HCI_PROTO_DEFER             0x01
 

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 9d84905..9ba2a1a 100644 (file)
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3265,10 +3265,10 @@ static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
        if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
                events[0] |= 0x40;      /* LE Data Length Change */
 
-       /* If the controller supports LL Privacy feature, enable
-        * the corresponding event.
+       /* If the controller supports LL Privacy feature or LE Extended Adv,
+        * enable the corresponding event.
         */
-       if (hdev->le_features[0] & HCI_LE_LL_PRIVACY)
+       if (use_enhanced_conn_complete(hdev))
                events[1] |= 0x02;      /* LE Enhanced Connection Complete */
 
        /* If the controller supports Extended Scanner Filter
@@ -5188,7 +5188,7 @@ int hci_le_ext_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
        return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN,
                                        plen, data,
                                        HCI_EV_LE_ENHANCED_CONN_COMPLETE,
-                                       HCI_CMD_TIMEOUT, NULL);
+                                       conn->conn_timeout, NULL);
 }
 
 int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
@@ -5273,9 +5273,18 @@ int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
        cp.min_ce_len = cpu_to_le16(0x0000);
        cp.max_ce_len = cpu_to_le16(0x0000);
 
+       /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261:
+        *
+        * If this event is unmasked and the HCI_LE_Connection_Complete event
+        * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is
+        * sent when a new connection has been created.
+        */
        err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN,
-                                      sizeof(cp), &cp, HCI_EV_LE_CONN_COMPLETE,
-                                      HCI_CMD_TIMEOUT, NULL);
+                                      sizeof(cp), &cp,
+                                      use_enhanced_conn_complete(hdev) ?
+                                      HCI_EV_LE_ENHANCED_CONN_COMPLETE :
+                                      HCI_EV_LE_CONN_COMPLETE,
+                                      conn->conn_timeout, NULL);
 
 done:
        /* Re-enable advertising after the connection attempt is finished. */