[nrf fromtree] Bluetooth: HCI: Expose bt_hci_conn_lookup_handle()

When implementing vendor specific HCI APIs and events,
we want to be able to convert between host objects,
handles and back again.

Exposing this API makes that possible

Signed-off-by: Rubin Gerritsen <[email protected]>
(cherry picked from commit 2967bd8)

include/zephyr/bluetooth/hci.h

@@ -113,6 +113,18 @@ int bt_hci_cmd_send_sync(uint16_t opcode, struct net_buf *buf,
  */
 int bt_hci_get_conn_handle(const struct bt_conn *conn, uint16_t *conn_handle);
 
+/** @brief Get connection given a connection handle.
+ *
+ * The caller gets a new reference to the connection object which must be
+ * released with bt_conn_unref() once done using the object.
+ *
+ * @param handle The connection handle
+ *
+ * @returns The corresponding connection object on success.
+ *          NULL if it does not exist.
+ */
+struct bt_conn *bt_hci_conn_lookup_handle(uint16_t handle);
+
 /** @brief Get advertising handle for an advertising set.
  *
  * @param adv Advertising set.

subsys/bluetooth/host/conn.c

@@ -1355,6 +1355,11 @@ struct bt_conn *bt_conn_lookup_handle(uint16_t handle, enum bt_conn_type type)
 	return NULL;
 }
 
+struct bt_conn *bt_hci_conn_lookup_handle(uint16_t handle)
+{
+	return bt_conn_lookup_handle(handle, BT_CONN_TYPE_ALL);
+}
+
 void bt_conn_foreach(enum bt_conn_type type,
 		     void (*func)(struct bt_conn *conn, void *data),
 		     void *data)