163 lines
5.4 KiB
C
163 lines
5.4 KiB
C
/****************************************************************************
|
|
* net/netdev_register.c
|
|
*
|
|
* Copyright (C) 2007-2010 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* 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 <net/uip/uip-arch.h>
|
|
|
|
#include "net_internal.h"
|
|
|
|
/****************************************************************************
|
|
* Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Priviate Types
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
static int g_next_devnum = 0;
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/* List of registered ethernet device drivers */
|
|
struct uip_driver_s *g_netdevices = NULL;
|
|
sem_t g_netdev_sem;
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Global Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: netdev_semtake
|
|
*
|
|
* Description:
|
|
* Managed access to the network device list
|
|
*
|
|
****************************************************************************/
|
|
|
|
void netdev_semtake(void)
|
|
{
|
|
/* Take the semaphore (perhaps waiting) */
|
|
|
|
while (sem_wait(&g_netdev_sem) != 0)
|
|
{
|
|
/* The only case that an error should occr here is if
|
|
* the wait was awakened by a signal.
|
|
*/
|
|
|
|
ASSERT(*get_errno_ptr() == EINTR);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Function: netdev_register
|
|
*
|
|
* Description:
|
|
* Register a netword device driver and assign a name to it so tht it can
|
|
* be found in subsequent network ioctl operations on the device.
|
|
*
|
|
* Parameters:
|
|
* dev - The device driver structure to register
|
|
*
|
|
* Returned Value:
|
|
* 0:Success; -1 on failure
|
|
*
|
|
* Assumptions:
|
|
* Called during system initialization from normal user mode
|
|
*
|
|
****************************************************************************/
|
|
|
|
int netdev_register(FAR struct uip_driver_s *dev)
|
|
{
|
|
if (dev)
|
|
{
|
|
int devnum;
|
|
netdev_semtake();
|
|
|
|
/* Assign a device name to the interface */
|
|
|
|
devnum = g_next_devnum++;
|
|
snprintf( dev->d_ifname, IFNAMSIZ, "eth%d", devnum );
|
|
|
|
/* Add the device to the list of known network devices */
|
|
|
|
dev->flink = g_netdevices;
|
|
g_netdevices = dev;
|
|
|
|
/* Configure the device for IGMP support */
|
|
|
|
#ifdef CONFIG_NET_IGMP
|
|
uip_igmpdevinit(dev);
|
|
#endif
|
|
netdev_semgive();
|
|
|
|
nlldbg("Registered 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);
|
|
|
|
return OK;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */
|