| /**************************************************************************** |
| * net/netdev/netdev_count.c |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <string.h> |
| #include <errno.h> |
| |
| #include <nuttx/net/netdev.h> |
| |
| #include "utils/utils.h" |
| #include "netdev/netdev.h" |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: netdev_count |
| * |
| * Description: |
| * Return the number of network devices |
| * |
| * Input Parameters: |
| * None |
| * |
| * Returned Value: |
| * The number of network devices |
| * |
| ****************************************************************************/ |
| |
| int netdev_count(void) |
| { |
| struct net_driver_s *dev; |
| int ndev; |
| |
| net_lock(); |
| for (dev = g_netdevices, ndev = 0; dev; dev = dev->flink, ndev++); |
| net_unlock(); |
| return ndev; |
| } |