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/****************************************************************************
* net/netdev_unregister.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
#include <sys/socket.h>
#include <stdio.h>
#include <semaphore.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <nuttx/net/uip/uip-arch.h>
#include "net_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
#ifdef CONFIG_NET_SLIP
# define NETDEV_FORMAT "sl%d"
#else
# define NETDEV_FORMAT "eth%d"
#endif
/****************************************************************************
* Priviate Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Function: netdev_unregister
*
* Description:
* Unregister a network device driver.
*
* Parameters:
* dev - The device driver structure to un-register
*
* Returned Value:
* 0:Success; negated errno on failure
*
* Assumptions:
* Currently only called for USB networking devices when the device is
* physically removed from the slot
*
****************************************************************************/
int netdev_unregister(FAR struct uip_driver_s *dev)
{
struct uip_driver_s *prev;
struct uip_driver_s *curr;
if (dev)
{
netdev_semtake();
/* Find the device in the list of known network devices */
for (prev = NULL, curr = g_netdevices;
curr && curr != dev;
prev = curr, curr = curr->flink);
/* Remove the device to the list of known network devices */
if (curr)
{
/* Where was the entry */
if (prev)
{
/* The entry was in the middle or at the end of the list */
prev->flink = curr->flink;
}
else
{
/* The entry was at the beginning of the list */
g_netdevices = curr;
}
curr->flink = NULL;
}
netdev_semgive();
#ifdef CONFIG_NET_ETHERNET
nlldbg("Unregistered MAC: %02x:%02x:%02x:%02x:%02x:%02x as dev: %s\n",
dev->d_mac.ether_addr_octet[0], dev->d_mac.ether_addr_octet[1],
dev->d_mac.ether_addr_octet[2], dev->d_mac.ether_addr_octet[3],
dev->d_mac.ether_addr_octet[4], dev->d_mac.ether_addr_octet[5],
dev->d_ifname);
#else
nlldbg("Registered dev: %s\n", dev->d_ifname);
#endif
return OK;
}
return -EINVAL;
}
#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */
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