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incubator-nuttx/net/netdev_ioctl.c

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/****************************************************************************
* net/netdev_ioctl.c
*
* Copyright (C) 2007-2009 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 <sys/ioctl.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/net.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <net/uip/uip-arch.h>
#include <net/uip/uip.h>
#include "net_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_NET_IPv6
# define AF_INETX AF_INET6
#else
# define AF_INETX AF_INET
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: ioctl_getipaddr / ioctl_setipaddr
*
* Description:
* Copy IP addresses into and out of device structure
*
****************************************************************************/
static void ioctl_getipaddr(struct sockaddr *outaddr, uip_ipaddr_t *inaddr)
{
#ifdef CONFIG_NET_IPv6
#error "Not big enough for IPv6 address"
struct sockaddr_in6 *dest = (struct sockaddr_in6 *)outaddr;
dest->sin_family = AF_INET6;
dest->sin_port = 0;
memcpy(dest->sin6_addr.in6_u.u6_addr8, inaddr, 16);
#else
struct sockaddr_in *dest = (struct sockaddr_in *)outaddr;
dest->sin_family = AF_INET;
dest->sin_port = 0;
dest->sin_addr.s_addr = *inaddr;
#endif
}
static void ioctl_setipaddr(uip_ipaddr_t *outaddr, struct sockaddr *inaddr)
{
#ifdef CONFIG_NET_IPv6
struct sockaddr_in6 *src = (struct sockaddr_in6 *)inaddr;
memcpy(outaddr, src->sin6_addr.in6_u.u6_addr8, 16);
#else
struct sockaddr_in *src = (struct sockaddr_in *)inaddr;
*outaddr = src->sin_addr.s_addr;
#endif
}
/****************************************************************************
* Name: ioctl_ifup / ioctl_ifdown
*
* Description:
* Bring the interface up/down
*
****************************************************************************/
static inline void ioctl_ifup(FAR struct uip_driver_s *dev)
{
if (dev->d_ifup)
{
dev->d_ifup(dev);
}
}
static inline void ioctl_ifdown(FAR struct uip_driver_s *dev)
{
if (dev->d_ifdown)
{
dev->d_ifdown(dev);
}
}
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: netdev_ioctl
*
* Description:
* Perform network device specific operations.
*
* Parameters:
* sockfd Socket descriptor of device
* cmd The ioctl command
* req The argument of the ioctl cmd
*
* Return:
* >=0 on success (positive non-zero values are cmd-specific)
* -1 on failure withi errno set properly:
*
* EBADF
* 'sockfd' is not a valid descriptor.
* EFAULT
* 'req' references an inaccessible memory area.
* EINVAL
* 'cmd' or 'req' is not valid.
* ENOTTY
* 'sockfd' is not associated with a network device.
* ENOTTY
* The specified request does not apply to the kind of object that the
* descriptor 'sockfd' references.
*
****************************************************************************/
int netdev_ioctl(int sockfd, int cmd, struct ifreq *req)
{
FAR struct socket *psock = sockfd_socket(sockfd);
FAR struct uip_driver_s *dev;
int err;
if (!_SIOCVALID(cmd) || !req)
{
err = EINVAL;
goto errout;
}
/* Verify that the sockfd corresponds to valid, allocated socket */
if (!psock || psock->s_crefs <= 0)
{
err = EBADF;
goto errout;
}
/* Find the network device associated with the device name
* in the request data.
*/
dev = netdev_findbyname(req->ifr_name);
if (!dev)
{
err = EINVAL;
goto errout;
}
/* Execute the command */
switch (cmd)
{
case SIOCGIFADDR: /* Get IP address */
ioctl_getipaddr(&req->ifr_addr, &dev->d_ipaddr);
break;
case SIOCSIFADDR: /* Set IP address */
ioctl_ifdown(dev);
ioctl_setipaddr(&dev->d_ipaddr, &req->ifr_addr);
ioctl_ifup(dev);
break;
case SIOCGIFDSTADDR: /* Get P-to-P address */
ioctl_getipaddr(&req->ifr_dstaddr, &dev->d_draddr);
break;
case SIOCSIFDSTADDR: /* Set P-to-P address */
ioctl_setipaddr(&dev->d_draddr, &req->ifr_dstaddr);
break;
case SIOCGIFNETMASK: /* Get network mask */
ioctl_getipaddr(&req->ifr_addr, &dev->d_netmask);
break;
case SIOCSIFNETMASK: /* Set network mask */
ioctl_setipaddr(&dev->d_netmask, &req->ifr_addr);
break;
case SIOCGIFMTU: /* Get MTU size */
req->ifr_mtu = CONFIG_NET_BUFSIZE;
break;
case SIOCGIFHWADDR: /* Get hardware address */
req->ifr_hwaddr.sa_family = AF_INETX;
memcpy(req->ifr_hwaddr.sa_data, dev->d_mac.ether_addr_octet, IFHWADDRLEN);
break;
case SIOCSIFHWADDR: /* Set hardware address -- will not take effect until ifup */
req->ifr_hwaddr.sa_family = AF_INETX;
memcpy(dev->d_mac.ether_addr_octet, req->ifr_hwaddr.sa_data, IFHWADDRLEN);
break;
case SIOCDIFADDR: /* Delete IP address */
ioctl_ifdown(dev);
memset(&dev->d_ipaddr, 0, sizeof(uip_ipaddr_t));
break;
case SIOCGIFCOUNT: /* Get number of devices */
req->ifr_count = netdev_count();
err = ENOSYS;
break;
case SIOCGIFBRDADDR: /* Get broadcast IP address */
case SIOCSIFBRDADDR: /* Set broadcast IP address */
err = ENOSYS;
goto errout;
#ifdef CONFIG_NET_ARPIOCTLS
case SIOCSARP: /* Set a ARP mapping */
case SIOCDARP: /* Delete an ARP mapping */
case SIOCGARP: /* Get an ARP mapping */
# error "IOCTL Commands not implemented"
#endif
default:
err = EINVAL;
goto errout;
}
return OK;
errout:
errno = err;
return ERROR;
}
#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */
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