/**************************************************************************** * net/netdev_ioctl.c * * Copyright (C) 2007, 2008, 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 #include #include #include #include #include #include #include #include #include #include #include #include "net_internal.h" /**************************************************************************** * 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; default: err = EINVAL; goto errout; } return OK; errout: errno = err; return ERROR; } #endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */