105 lines
3.0 KiB
C
105 lines
3.0 KiB
C
/****************************************************************************
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* net/netdev/netdev_carrier.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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#include <errno.h>
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#include <debug.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <nuttx/net/netdev.h>
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#include "netdev/netdev.h"
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#include "netlink/netlink.h"
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#include "arp/arp.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netdev_carrier_on
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*
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* Description:
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* Notifies the networking layer about an available carrier.
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* (e.g. a cable was plugged in)
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*
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* Input Parameters:
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* dev - The device driver structure
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*
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* Returned Value:
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* 0:Success; negated errno on failure
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*
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****************************************************************************/
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int netdev_carrier_on(FAR struct net_driver_s *dev)
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{
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if (dev && !IFF_IS_RUNNING(dev->d_flags))
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{
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dev->d_flags |= IFF_RUNNING;
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netlink_device_notify(dev);
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return OK;
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}
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return -EINVAL;
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}
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/****************************************************************************
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* Name: netdev_carrier_off
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*
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* Description:
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* Notifies the networking layer about an disappeared carrier.
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* (e.g. a cable was unplugged)
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*
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* Input Parameters:
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* dev - The device driver structure
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*
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* Returned Value:
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* 0:Success; negated errno on failure
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*
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****************************************************************************/
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int netdev_carrier_off(FAR struct net_driver_s *dev)
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{
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if (dev && IFF_IS_RUNNING(dev->d_flags))
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{
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dev->d_flags &= ~IFF_RUNNING;
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netlink_device_notify(dev);
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/* Notify clients that the network has been taken down */
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devif_dev_event(dev, NULL, NETDEV_DOWN);
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arp_cleanup(dev);
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return OK;
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}
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return -EINVAL;
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}
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