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nuttx/net/netdev/netdev_ioctl.c

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/****************************************************************************
* net/netdev/netdev_ioctl.c
*
* Copyright (C) 2007-2012, 2015 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 <nuttx/net/ip.h>
#include <net/if.h>
#include <net/route.h>
#include <net/ethernet.h>
#include <netinet/in.h>
#include <nuttx/net/netdev.h>
#ifdef CONFIG_NET_IGMP
# include "sys/sockio.h"
# include "nuttx/net/igmp.h"
#endif
#include "socket/socket.h"
#include "netdev/netdev.h"
#include "devif/devif.h"
#include "igmp/igmp.h"
#include "icmpv6/icmpv6.h"
#include "route/route.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* This is really kind of bogus.. When asked for an IP address, this is
* family that is returned in the ifr structure. Probably could just skip
* this since the address family has nothing to do with the Ethernet address.
*/
#ifdef CONFIG_NET_IPv6
# define AF_INETX AF_INET6
#else
# define AF_INETX AF_INET
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: ioctl_addipv4route
*
* Description:
* Add an IPv4 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be added
*
****************************************************************************/
#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv4)
static int ioctl_addipv4route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in *addr;
in_addr_t target;
in_addr_t netmask;
in_addr_t router;
addr = (FAR struct sockaddr_in *)rtentry->rt_target;
target = (in_addr_t)addr->sin_addr.s_addr;
addr = (FAR struct sockaddr_in *)rtentry->rt_netmask;
netmask = (in_addr_t)addr->sin_addr.s_addr;
/* The router is an optional argument */
if (rtentry->rt_router)
{
addr = (FAR struct sockaddr_in *)rtentry->rt_router;
router = (in_addr_t)addr->sin_addr.s_addr;
}
else
{
router = 0;
}
return net_addroute(target, netmask, router);
}
#endif /* CONFIG_NET_ROUTE && CONFIG_NET_IPv4 */
/****************************************************************************
* Name: ioctl_addipv6route
*
* Description:
* Add an IPv6 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be added
*
****************************************************************************/
#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv6)
static int ioctl_addipv6route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in6 *target;
FAR struct sockaddr_in6 *netmask;
net_ipv6addr_t router;
target = (FAR struct sockaddr_in6 *)rtentry->rt_target;
netmask = (FAR struct sockaddr_in6 *)rtentry->rt_netmask;
/* The router is an optional argument */
if (rtentry->rt_router)
{
FAR struct sockaddr_in6 *addr;
addr = (FAR struct sockaddr_in6 *)rtentry->rt_router;
net_ipv6addr_copy(router, addr->sin6_addr.s6_addr16);
}
else
{
net_ipv6addr_copy(router, in6addr_any.s6_addr16);
}
return net_addroute_ipv6(target->sin6_addr.s6_addr16, netmask->sin6_addr.s6_addr16, router);
}
#endif /* CONFIG_NET_ROUTE && CONFIG_NET_IPv6 */
/****************************************************************************
* Name: ioctl_delipv4route
*
* Description:
* Delete an IPv4 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be deleted
*
****************************************************************************/
#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv4)
static int ioctl_delipv4route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in *addr;
in_addr_t target;
in_addr_t netmask;
addr = (FAR struct sockaddr_in *)rtentry->rt_target;
target = (in_addr_t)addr->sin_addr.s_addr;
addr = (FAR struct sockaddr_in *)rtentry->rt_netmask;
netmask = (in_addr_t)addr->sin_addr.s_addr;
return net_delroute(target, netmask);
}
#endif /* CONFIG_NET_ROUTE && CONFIG_NET_IPv4 */
/****************************************************************************
* Name: ioctl_delipv6route
*
* Description:
* Delete an IPv6 route to the routing table.
*
* Input Parameters:
* rentry - Describes the route to be deleted
*
****************************************************************************/
#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv6)
static int ioctl_delipv6route(FAR struct rtentry *rtentry)
{
FAR struct sockaddr_in6 *target;
FAR struct sockaddr_in6 *netmask;
target = (FAR struct sockaddr_in6 *)rtentry->rt_target;
netmask = (FAR struct sockaddr_in6 *)rtentry->rt_netmask;
return net_delroute_ipv6(target->sin6_addr.s6_addr16, netmask->sin6_addr.s6_addr16);
}
#endif /* CONFIG_NET_ROUTE && CONFIG_NET_IPv6 */
/****************************************************************************
* Name: ioctl_getipv4addr
*
* Description:
* Copy IP addresses from device structure to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* inaddr - The source IP address in the device structure.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
static void ioctl_getipv4addr(FAR struct sockaddr *outaddr, in_addr_t inaddr)
{
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_getipv6addr
*
* Description:
* Copy IP addresses from device structure to user memory.
*
* Input Parameters:
* outaddr - Pointer to the user-provided memory to receive the address.
* inaddr - The source IP adress in the device structure.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
static void ioctl_getipv6addr(FAR struct sockaddr_storage *outaddr,
FAR const net_ipv6addr_t inaddr)
{
FAR struct sockaddr_in6 *dest = (FAR struct sockaddr_in6 *)outaddr;
dest->sin6_family = AF_INET6;
dest->sin6_port = 0;
memcpy(dest->sin6_addr.in6_u.u6_addr8, inaddr, 16);
}
#endif
/****************************************************************************
* Name: ioctl_setipv4addr
*
* 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.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
static void ioctl_setipv4addr(FAR in_addr_t *outaddr,
FAR const struct sockaddr *inaddr)
{
FAR const struct sockaddr_in *src = (FAR const struct sockaddr_in *)inaddr;
*outaddr = src->sin_addr.s_addr;
}
#endif
/****************************************************************************
* Name: ioctl_setipv6addr
*
* 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.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
static void ioctl_setipv6addr(FAR net_ipv6addr_t outaddr,
FAR const struct sockaddr_storage *inaddr)
{
FAR const struct sockaddr_in6 *src = (FAR const struct sockaddr_in6 *)inaddr;
memcpy(outaddr, src->sin6_addr.in6_u.u6_addr8, 16);
}
#endif
/****************************************************************************
* Name: netdev_ifrdev
*
* Description:
* Verify the struct ifreq and get the Ethernet device.
*
* Parameters:
* req - The argument of the ioctl cmd
*
* Return:
* A pointer to the driver structure on success; NULL on failure.
*
****************************************************************************/
static FAR struct net_driver_s *netdev_ifrdev(FAR struct ifreq *req)
{
if (!req)
{
return NULL;
}
/* Find the network device associated with the device name
* in the request data.
*/
return netdev_findbyname(req->ifr_name);
}
/****************************************************************************
* Name: netdev_ifrioctl
*
* 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,
FAR struct ifreq *req)
{
FAR struct net_driver_s *dev;
int ret = -EINVAL;
nvdbg("cmd: %d\n", cmd);
/* Execute the command */
switch (cmd)
{
#ifdef CONFIG_NET_IPv4
case SIOCGIFADDR: /* Get IP address */
{
dev = netdev_ifrdev(req);
if (dev)
{
ioctl_getipv4addr(&req->ifr_addr, dev->d_ipaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFADDR: /* Set IP address */
{
dev = netdev_ifrdev(req);
if (dev)
{
netdev_ifdown(dev);
ioctl_setipv4addr(&dev->d_ipaddr, &req->ifr_addr);
netdev_ifup(dev);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFDSTADDR: /* Get P-to-P address */
{
dev = netdev_ifrdev(req);
if (dev)
{
ioctl_getipv4addr(&req->ifr_dstaddr, dev->d_draddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFDSTADDR: /* Set P-to-P address */
{
dev = netdev_ifrdev(req);
if (dev)
{
ioctl_setipv4addr(&dev->d_draddr, &req->ifr_dstaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFBRDADDR: /* Get broadcast IP address */
case SIOCSIFBRDADDR: /* Set broadcast IP address */
{
ret = -ENOSYS;
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCGIFNETMASK: /* Get network mask */
{
dev = netdev_ifrdev(req);
if (dev)
{
ioctl_getipv4addr(&req->ifr_addr, dev->d_netmask);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv4
case SIOCSIFNETMASK: /* Set network mask */
{
dev = netdev_ifrdev(req);
if (dev)
{
ioctl_setipv4addr(&dev->d_netmask, &req->ifr_addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFADDR: /* Get IP address */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_getipv6addr(&lreq->lifr_addr, dev->d_ipv6addr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFADDR: /* Set IP address */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
netdev_ifdown(dev);
ioctl_setipv6addr(dev->d_ipv6addr, &lreq->lifr_addr);
netdev_ifup(dev);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFDSTADDR: /* Get P-to-P address */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_getipv6addr(&lreq->lifr_dstaddr, dev->d_ipv6draddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFDSTADDR: /* Set P-to-P address */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_setipv6addr(dev->d_ipv6draddr, &lreq->lifr_dstaddr);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFBRDADDR: /* Get broadcast IP address */
case SIOCSLIFBRDADDR: /* Set broadcast IP address */
{
ret = -ENOSYS;
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCGLIFNETMASK: /* Get network mask */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_getipv6addr(&lreq->lifr_addr, dev->d_ipv6netmask);
ret = OK;
}
}
break;
#endif
#ifdef CONFIG_NET_IPv6
case SIOCSLIFNETMASK: /* Set network mask */
{
dev = netdev_ifrdev(req);
if (dev)
{
FAR struct lifreq *lreq = (FAR struct lifreq *)req;
ioctl_setipv6addr(dev->d_ipv6netmask, &lreq->lifr_addr);
ret = OK;
}
}
break;
#endif
case SIOCGLIFMTU: /* Get MTU size */
case SIOCGIFMTU: /* Get MTU size */
{
dev = netdev_ifrdev(req);
if (dev)
{
req->ifr_mtu = NET_DEV_MTU(dev);
ret = OK;
}
}
break;
#ifdef CONFIG_NET_ICMPv6_AUTOCONF
case SIOCIFAUTOCONF: /* Perform ICMPv6 auto-configuration */
{
dev = netdev_ifrdev(req);
if (dev)
{
ret = icmpv6_autoconfig(dev);
}
}
break;
#endif
case SIOCSIFFLAGS: /* Sets the interface flags */
{
/* Is this a request to bring the interface up? */
dev = netdev_ifrdev(req);
if (dev)
{
if (req->ifr_flags & IFF_UP)
{
/* Yes.. bring the interface up */
netdev_ifup(dev);
}
/* Is this a request to take the interface down? */
else if (req->ifr_flags & IFF_DOWN)
{
/* Yes.. take the interface down */
netdev_ifdown(dev);
}
}
ret = OK;
}
break;
case SIOCGIFFLAGS: /* Gets the interface flags */
{
dev = netdev_ifrdev(req);
if (dev)
{
req->ifr_flags = dev->d_flags;
}
ret = OK;
}
break;
/* MAC address operations only make sense if Ethernet is supported */
#ifdef CONFIG_NET_ETHERNET
case SIOCGIFHWADDR: /* Get hardware address */
{
dev = netdev_ifrdev(req);
if (dev)
{
req->ifr_hwaddr.sa_family = AF_INETX;
memcpy(req->ifr_hwaddr.sa_data,
dev->d_mac.ether_addr_octet, IFHWADDRLEN);
ret = OK;
}
}
break;
case SIOCSIFHWADDR: /* Set hardware address -- will not take effect until ifup */
{
dev = netdev_ifrdev(req);
if (dev)
{
memcpy(dev->d_mac.ether_addr_octet,
req->ifr_hwaddr.sa_data, IFHWADDRLEN);
ret = OK;
}
}
break;
#endif
case SIOCDIFADDR: /* Delete IP address */
{
dev = netdev_ifrdev(req);
if (dev)
{
netdev_ifdown(dev);
#ifdef CONFIG_NET_IPv4
dev->d_ipaddr = 0;
#endif
#ifdef CONFIG_NET_IPv6
memset(&dev->d_ipv6addr, 0, sizeof(net_ipv6addr_t));
#endif
ret = OK;
}
}
break;
case SIOCGIFCOUNT: /* Get number of devices */
{
req->ifr_count = netdev_count();
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
#ifdef CONFIG_NETDEV_PHY_IOCTL
#ifdef CONFIG_ARCH_PHY_INTERRUPT
case SIOCMIINOTIFY: /* Set up for PHY event notifications */
{
dev = netdev_ifrdev(req);
if (dev && dev->d_ioctl)
{
struct mii_iotcl_notify_s *notify = &req->ifr_ifru.ifru_mii_notify;
ret = dev->d_ioctl(dev, cmd, ((long)(uintptr_t)notify));
}
}
break;
#endif
case SIOCGMIIPHY: /* Get address of MII PHY in use */
case SIOCGMIIREG: /* Get MII register via MDIO */
case SIOCSMIIREG: /* Set MII register via MDIO */
{
dev = netdev_ifrdev(req);
if (dev && dev->d_ioctl)
{
struct mii_ioctl_data_s *mii_data = &req->ifr_ifru.ifru_mii_data;
ret = dev->d_ioctl(dev, cmd, ((long)(uintptr_t)mii_data));
}
}
break;
#endif
default:
{
ret = -ENOTTY;
}
break;;
}
return ret;
}
/****************************************************************************
* Name: netdev_imsfdev
*
* Description:
* Verify the struct ip_msfilter and get the Ethernet device.
*
* Parameters:
* req - The argument of the ioctl cmd
*
* Return:
* A pointer to the driver structure on success; NULL on failure.
*
****************************************************************************/
#ifdef CONFIG_NET_IGMP
static FAR struct net_driver_s *netdev_imsfdev(FAR struct ip_msfilter *imsf)
{
if (!imsf)
{
return NULL;
}
/* Find the network device associated with the device name
* in the request data.
*/
return netdev_findbyname(imsf->imsf_name);
}
#endif
/****************************************************************************
* 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,
FAR struct ip_msfilter *imsf)
{
FAR struct net_driver_s *dev;
int ret = -EINVAL;
nvdbg("cmd: %d\n", cmd);
/* Execute the command */
switch (cmd)
{
case SIOCSIPMSFILTER: /* Set source filter content */
{
dev = netdev_imsfdev(imsf);
if (dev)
{
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 = -ENOTTY;
break;
}
return ret;
}
#endif
/****************************************************************************
* Name: netdev_rtioctl
*
* Description:
* Perform routing table specific operations.
*
* Parameters:
* psock Socket structure
* dev Ethernet driver device structure
* cmd The ioctl command
* rtentry 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_ROUTE
static int netdev_rtioctl(FAR struct socket *psock, int cmd,
FAR struct rtentry *rtentry)
{
int ret = -EAFNOSUPPORT;
/* Execute the command */
switch (cmd)
{
case SIOCADDRT: /* Add an entry to the routing table */
{
/* The target address and the netmask are required values */
if (!rtentry || !rtentry->rt_target || !rtentry->rt_netmask)
{
return -EINVAL;
}
#ifdef CONFIG_NET_IPv4
#ifdef CONFIG_NET_IPv6
if (rtentry->rt_target->ss_family == AF_INET)
#endif
{
ret = ioctl_addipv4route(rtentry);
}
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
#ifdef CONFIG_NET_IPv4
else
#endif
{
ret = ioctl_addipv6route(rtentry);
}
#endif /* CONFIG_NET_IPv6 */
}
break;
case SIOCDELRT: /* Delete an entry from the routing table */
{
/* The target address and the netmask are required values */
if (!rtentry || !rtentry->rt_target || !rtentry->rt_netmask)
{
return -EINVAL;
}
#ifdef CONFIG_NET_IPv4
#ifdef CONFIG_NET_IPv6
if (rtentry->rt_target->ss_family == AF_INET)
#endif
{
ret = ioctl_delipv4route(rtentry);
}
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
#ifdef CONFIG_NET_IPv4
else
#endif
{
ret = ioctl_delipv6route(rtentry);
}
#endif /* CONFIG_NET_IPv6 */
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: netdev_ioctl
*
* Description:
* Perform network device specific operations.
*
* Parameters:
* sockfd Socket descriptor of device
* cmd The ioctl command
* arg 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
* 'arg' references an inaccessible memory area.
* ENOTTY
* 'cmd' not valid.
* EINVAL
* 'arg' 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))
{
ret = -ENOTTY;
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*)((uintptr_t)arg));
#ifdef CONFIG_NET_IGMP
if (ret == -ENOTTY)
{
ret = netdev_imsfioctl(psock, cmd, (FAR struct ip_msfilter*)((uintptr_t)arg));
}
#endif
#ifdef CONFIG_NET_ROUTE
if (ret == -ENOTTY)
{
ret = netdev_rtioctl(psock, cmd, (FAR struct rtentry*)((uintptr_t)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;
}
/****************************************************************************
* Name: netdev_ifup / netdev_ifdown
*
* Description:
* Bring the interface up/down
*
****************************************************************************/
void netdev_ifup(FAR struct net_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_UP) == 0)
{
/* No, bring the interface up now */
if (dev->d_ifup(dev) == OK)
{
/* Mark the interface as up */
dev->d_flags |= IFF_UP;
}
}
}
}
void netdev_ifdown(FAR struct net_driver_s *dev)
{
/* Check sure that the device supports the d_ifdown() method */
if (dev->d_ifdown)
{
/* Is the interface already down? */
if ((dev->d_flags & IFF_UP) != 0)
{
/* No, take the interface down now */
if (dev->d_ifdown(dev) == OK)
{
/* Mark the interface as down */
dev->d_flags &= ~IFF_UP;
}
}
/* Notify clients that the network has been taken down */
(void)devif_dev_event(dev, NULL, NETDEV_DOWN);
}
}
#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */
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