/**************************************************************************** * net/netdev_ioctl.c * * Copyright (C) 2007-2012 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 #include #ifdef CONFIG_NET_IGMP # include "sys/sockio.h" # include "nuttx/net/uip/uip-igmp.h" #endif #include "net_internal.h" #include "net_route.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_UP) == 0) { /* No, bring the interface up now */ if (dev->d_ifup(dev) == OK) { /* Mark the interface as up */ dev->d_flags |= IFF_UP; } } } } 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_UP) != 0) { /* No, take the interface down now */ if (dev->d_ifdown(dev) == OK) { /* Mark the interface as down */ dev->d_flags &= ~IFF_UP; } } } } /**************************************************************************** * 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 uip_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 uip_driver_s *dev; int ret = -EINVAL; nvdbg("cmd: %d\n", cmd); /* Execute the command */ switch (cmd) { case SIOCGIFADDR: /* Get IP address */ { dev = netdev_ifrdev(req); if (dev) { ioctl_getipaddr(&req->ifr_addr, &dev->d_ipaddr); ret = OK; } } break; case SIOCSIFADDR: /* Set IP address */ { dev = netdev_ifrdev(req); if (dev) { ioctl_ifdown(dev); ioctl_setipaddr(&dev->d_ipaddr, &req->ifr_addr); ioctl_ifup(dev); ret = OK; } } break; case SIOCGIFDSTADDR: /* Get P-to-P address */ { dev = netdev_ifrdev(req); if (dev) { ioctl_getipaddr(&req->ifr_dstaddr, &dev->d_draddr); ret = OK; } } break; case SIOCSIFDSTADDR: /* Set P-to-P address */ { dev = netdev_ifrdev(req); if (dev) { ioctl_setipaddr(&dev->d_draddr, &req->ifr_dstaddr); ret = OK; } } break; case SIOCGIFNETMASK: /* Get network mask */ { dev = netdev_ifrdev(req); if (dev) { ioctl_getipaddr(&req->ifr_addr, &dev->d_netmask); ret = OK; } } break; case SIOCSIFNETMASK: /* Set network mask */ { dev = netdev_ifrdev(req); if (dev) { ioctl_setipaddr(&dev->d_netmask, &req->ifr_addr); ret = OK; } } break; case SIOCGIFMTU: /* Get MTU size */ { req->ifr_mtu = CONFIG_NET_BUFSIZE; ret = OK; } break; 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 */ ioctl_ifup(dev); } /* Is this a request to take the interface down? */ else if (req->ifr_flags & IFF_DOWN) { /* Yes.. take the interface down */ ioctl_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) { req->ifr_hwaddr.sa_family = AF_INETX; 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) { ioctl_ifdown(dev); memset(&dev->d_ipaddr, 0, sizeof(uip_ipaddr_t)); ret = OK; } } 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 = -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 uip_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 uip_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(req); 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 = -EINVAL; /* Execute the command */ switch (cmd) { case SIOCADDRT: /* Add an entry to the routing table */ { if (rtentry) { uip_ipaddr_t target; uip_ipaddr_t netmask; uip_ipaddr_t router; #ifdef CONFIG_NET_IPv6 FAR struct sockaddr_in6 *addr; #else FAR struct sockaddr_in *addr; #endif /* The target address and the netmask are required value */ if (!rtentry->rt_target || !rtentry->rt_netmask) { return -EINVAL; } #ifdef CONFIG_NET_IPv6 addr = (FAR struct sockaddr_in6 *)rtentry->rt_target; target = (uip_ipaddr_t)addr->sin6_addr.u6_addr16; addr = (FAR struct sockaddr_in6 *)rtentry->rt_netmask; netmask = (uip_ipaddr_t)addr->sin6_addr.u6_addr16; /* The router is an optional argument */ if (rtentry->rt_router) { addr = (FAR struct sockaddr_in6 *)rtentry->rt_router; router = (uip_ipaddr_t)addr->sin6_addr.u6_addr16; } else { router = NULL; } #else addr = (FAR struct sockaddr_in *)rtentry->rt_target; target = (uip_ipaddr_t)addr->sin_addr.s_addr; addr = (FAR struct sockaddr_in *)rtentry->rt_netmask; netmask = (uip_ipaddr_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 = (uip_ipaddr_t)addr->sin_addr.s_addr; } else { router = 0; } #endif ret = net_addroute(target, netmask, router); } } break; case SIOCDELRT: /* Delete an entry from the routing table */ { if (rtentry) { uip_ipaddr_t target; uip_ipaddr_t netmask; #ifdef CONFIG_NET_IPv6 FAR struct sockaddr_in6 *addr; #else FAR struct sockaddr_in *addr; #endif /* The target address and the netmask are required value */ if (!rtentry->rt_target || !rtentry->rt_netmask) { return -EINVAL; } #ifdef CONFIG_NET_IPv6 addr = (FAR struct sockaddr_in6 *)rtentry->rt_target; target = (uip_ipaddr_t)addr->sin6_addr.u6_addr16; addr = (FAR struct sockaddr_in6 *)rtentry->rt_netmask; netmask = (uip_ipaddr_t)addr->sin6_addr.u6_addr16; #else addr = (FAR struct sockaddr_in *)rtentry->rt_target; target = (uip_ipaddr_t)addr->sin_addr.s_addr; addr = (FAR struct sockaddr_in *)rtentry->rt_netmask; netmask = (uip_ipaddr_t)addr->sin_addr.s_addr; #endif ret = net_delroute(target, netmask); } } break; default: ret = -ENOTTY; break; } return ret; } #endif /**************************************************************************** * Global 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; } #endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */