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incubator-nuttx/net/netdev_ioctl.c

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/****************************************************************************
* net/netdev_ioctl.c
*
* Copyright (C) 2007-2012 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 <sys/ioctl.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/net/net.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <nuttx/net/uip/uip-arch.h>
#include <nuttx/net/uip/uip.h>
#ifdef CONFIG_NET_IGMP
# include "sys/sockio.h"
# include "nuttx/net/uip/uip-igmp.h"
#endif
#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
*
* Description:
* Copy IP addresses from device structure to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* Actual type may be either 'struct sockaddr' (IPv4 only) or type
* 'struct sockaddr_storage' (both IPv4 and IPv6).
* inaddr - The source IP adress in the device structure.
*
****************************************************************************/
static void ioctl_getipaddr(FAR void *outaddr, FAR const uip_ipaddr_t *inaddr)
{
#ifdef CONFIG_NET_IPv6
FAR struct sockaddr_in6 *dest = (FAR struct sockaddr_in6 *)outaddr;
dest->sin_family = AF_INET6;
dest->sin_port = 0;
memcpy(dest->sin6_addr.in6_u.u6_addr8, inaddr, 16);
#else
FAR struct sockaddr_in *dest = (FAR struct sockaddr_in *)outaddr;
dest->sin_family = AF_INET;
dest->sin_port = 0;
dest->sin_addr.s_addr = *inaddr;
#endif
}
/****************************************************************************
* Name: ioctl_setipaddr
*
* Description:
* Copy IP addresses from user memory into the device structure
*
* Input Parameters:
* outaddr - Pointer to the source IP address in the device structure.
* inaddr - Pointer to the user-provided memory to containing the new IP
* address. Actual type may be either 'struct sockaddr' (IPv4 only) or
* type 'struct sockaddr_storage' (both IPv4 and IPv6).
*
****************************************************************************/
static void ioctl_setipaddr(FAR uip_ipaddr_t *outaddr, FAR const void *inaddr)
{
#ifdef CONFIG_NET_IPv6
FAR const struct sockaddr_in6 *src = (FAR const struct sockaddr_in6 *)inaddr;
memcpy(outaddr, src->sin6_addr.in6_u.u6_addr8, 16);
#else
FAR const struct sockaddr_in *src = (FAR const struct sockaddr_in *)inaddr;
*outaddr = src->sin_addr.s_addr;
#endif
}
/****************************************************************************
* Name: ioctl_ifup / ioctl_ifdown
*
* Description:
* Bring the interface up/down
*
****************************************************************************/
static void ioctl_ifup(FAR struct uip_driver_s *dev)
{
/* Make sure that the device supports the d_ifup() method */
if (dev->d_ifup)
{
/* Is the interface already up? */
if ((dev->d_flags & IFF_RUNNING) == 0)
{
/* No, bring the interface up now */
if (dev->d_ifup(dev) == OK)
{
/* Mark the interface as up */
dev->d_flags |= IFF_RUNNING;
}
}
}
}
static void ioctl_ifdown(FAR struct uip_driver_s *dev)
{
/* Make sure that the device supports the d_ifdown() method */
if (dev->d_ifdown)
{
/* Is the interface already down? */
if ((dev->d_flags & IFF_RUNNING) != 0)
{
/* No, take the interface down now */
if (dev->d_ifdown(dev) == OK)
{
/* Mark the interface as down */
dev->d_flags &= ~IFF_RUNNING;
}
}
}
}
/****************************************************************************
* Name: netdev_ioctl
*
* Description:
* Perform network device specific operations.
*
* Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* req The argument of the ioctl cmd
*
* Return:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
static int netdev_ifrioctl(FAR struct socket *psock, int cmd, struct ifreq *req)
{
FAR struct uip_driver_s *dev;
int ret = OK;
nvdbg("cmd: %d\n", cmd);
/* Find the network device associated with the device name
* in the request data.
*/
dev = netdev_findbyname(req->ifr_name);
if (!dev)
{
ret = -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 SIOCSIFFLAGS: /* Sets the interface flags */
{
/* Is this a request to bring the interface up? */
if (req->ifr_flags & IF_FLAG_IFUP)
{
/* Yes.. bring the interface up */
ioctl_ifup(dev);
}
/* Is this a request to take the interface down? */
else if (req->ifr_flags & IF_FLAG_IFDOWN)
{
/* Yes.. take the interface down */
ioctl_ifdown(dev);
}
}
break;
case SIOCGIFFLAGS: /* Gets the interface flags */
{
req->ifr_flags = 0;
/* Is the interface running? */
if (dev->d_flags & IFF_RUNNING)
{
/* Yes.. report interface up */
req->ifr_flags |= IF_FLAG_IFUP;
}
else
{
/* No.. report interface down */
req->ifr_flags |= IF_FLAG_IFDOWN;
}
}
break;
/* MAC address operations only make sense if Ethernet is supported */
#ifdef CONFIG_NET_ETHERNET
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;
#endif
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();
ret = -ENOSYS;
}
break;
case SIOCGIFBRDADDR: /* Get broadcast IP address */
case SIOCSIFBRDADDR: /* Set broadcast IP address */
{
ret = -ENOSYS;
}
break;
#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:
{
ret = -EINVAL;
}
break;;
}
errout:
return ret;
}
/****************************************************************************
* Name: netdev_imsfioctl
*
* Description:
* Perform network device specific operations.
*
* Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* imsf The argument of the ioctl cmd
*
* Return:
* >=0 on success (positive non-zero values are cmd-specific)
* Negated errno returned on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_IGMP
static int netdev_imsfioctl(FAR struct socket *psock, int cmd, struct ip_msfilter *imsf)
{
FAR struct uip_driver_s *dev;
int ret = OK;
nvdbg("cmd: %d\n", cmd);
/* Find the network device associated with the device name
* in the request data.
*/
dev = netdev_findbyname(imsf->imsf_name);
if (!dev)
{
ret = -EINVAL;
goto errout;
}
/* Execute the command */
switch (cmd)
{
case SIOCSIPMSFILTER: /* Set source filter content */
{
if (imsf->imsf_fmode == MCAST_INCLUDE)
{
ret = igmp_joingroup(dev, &imsf->imsf_multiaddr);
}
else
{
DEBUGASSERT(imsf->imsf_fmode == MCAST_EXCLUDE);
ret = igmp_leavegroup(dev, &imsf->imsf_multiaddr);
}
}
break;
case SIOCGIPMSFILTER: /* Retrieve source filter addresses */
default:
ret = -EINVAL;
break;
}
errout:
return ret;
}
#endif
/****************************************************************************
* 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)
* On a failure, -1 is returned with errno set appropriately
*
* 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, unsigned long arg)
{
FAR struct socket *psock = sockfd_socket(sockfd);
int ret;
/* Check if this is a valid command. In all cases, arg is a pointer that has
* been cast to unsigned long. Verify that the value of the to-be-pointer is
* non-NULL.
*/
if (!_SIOCVALID(cmd) || !arg)
{
ret = -EINVAL;
goto errout;
}
/* Verify that the sockfd corresponds to valid, allocated socket */
if (!psock || psock->s_crefs <= 0)
{
ret = -EBADF;
goto errout;
}
/* Execute the command */
ret = netdev_ifrioctl(psock, cmd, (FAR struct ifreq*)arg);
#ifdef CONFIG_NET_IGMP
if (ret == -EINVAL)
{
ret = netdev_imsfioctl(psock, cmd, (FAR struct ip_msfilter*)arg);
}
#endif
/* Check for success or failure */
if (ret >= 0)
{
return ret;
}
/* On failure, set the errno and return -1 */
errout:
errno = -ret;
return ERROR;
}
#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */
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