/**************************************************************************** * net/inet/ipv4_setsockopt.c * * Copyright (C) 2018 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 #include #include #include #include #include #include #include "netdev/netdev.h" #include "igmp/igmp.h" #include "inet/inet.h" #ifdef CONFIG_NET_IPv4 /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: ipv4_setsockopt * * Description: * ipv4_setsockopt() sets the IPv4-protocol socket option specified by the * 'option' argument to the value pointed to by the 'value' argument for * the socket specified by the 'psock' argument. * * See for the a complete list of values of IPv4 protocol * socket options. * * Input Parameters: * psock Socket structure of socket to operate on * option identifies the option to set * value Points to the argument value * value_len The length of the argument value * * Returned Value: * Returns zero (OK) on success. On failure, it returns a negated errno * value to indicate the nature of the error. See psock_setcockopt() for * the list of possible error values. * ****************************************************************************/ int ipv4_setsockopt(FAR struct socket *psock, int option, FAR const void *value, socklen_t value_len) { #ifdef CONFIG_NET_IGMP int ret; ninfo("option: %d\n", option); /* With IPv4, the multicast-related socket options are simply an alternative * way to access IGMP. That IGMP functionality can also be accessed via * IOCTL commands (see netdev/netdev_ioctl.c) * * REVISIT: Clone the logic from netdev_ioctl.c here. */ net_lock(); switch (option) { case IP_MSFILTER: /* Access advanced, full-state filtering API */ { #if 0 /* REVISIT: This is not a proper implementation of IP_MSGFILTER */ FAR const struct ip_msfilter *imsf; FAR struct net_driver_s *dev; imsf = (FAR const struct ip_msfilter *)value; if (imsf == NULL || value_len < sizeof(struct ip_msfilter)) { nerr("ERROR: Bad value or value_len\n"); ret = -EINVAL; } else { /* Get the device associated with the local interface address */ dev = netdev_findby_lipv4addr(imsf->imsf_interface.s_addr); if (dev == NULL) { nwarn("WARNING: Could not find device for imsf_interface\n"); ret = -ENODEV; } else 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); } } #else ret = -ENOSYS; #endif } break; case IP_ADD_MEMBERSHIP: /* Join a multicast group */ case IP_DROP_MEMBERSHIP: /* Leave a multicast group */ { FAR const struct ip_mreq *mrec; FAR struct net_driver_s *dev; /* REVISIT: This is not a proper implementation of IP_MSGFILTER */ mrec = (FAR const struct ip_mreq *)value; if (mrec == NULL || value_len < sizeof(struct ip_mreq)) { nerr("ERROR: Bad value or value_len\n"); ret = -EINVAL; } else { /* Use the default network device is imr_interface is INADDRY_ANY. */ if (mrec->imr_interface.s_addr == INADDR_ANY) { dev = netdev_default(); } else { /* Get the device associated with the local interface address */ dev = netdev_findby_lipv4addr(mrec->imr_interface.s_addr); } if (dev == NULL) { nwarn("WARNING: Could not find device for imr_interface\n"); ret = -ENODEV; } else if (option == IP_ADD_MEMBERSHIP) { ret = igmp_joingroup(dev, &mrec->imr_multiaddr); } else { ret = igmp_leavegroup(dev, &mrec->imr_multiaddr); } } } break; /* The following IPv4 socket options are defined, but not implemented */ case IP_MULTICAST_IF: /* Set local device for a multicast * socket */ case IP_MULTICAST_TTL: /* Set/read the time-to-live value of * outgoing multicast packets */ case IP_MULTICAST_LOOP: /* Set/read boolean that determines * whether sent multicast packets * should be looped back to local * sockets. */ case IP_UNBLOCK_SOURCE: /* Unblock previously blocked multicast * source */ case IP_BLOCK_SOURCE: /* Stop receiving multicast data from * source */ case IP_ADD_SOURCE_MEMBERSHIP: /* Join a multicast group; allow receive * only from source */ case IP_DROP_SOURCE_MEMBERSHIP: /* Leave a source-specific group. Stop * receiving data from a given multicast * group that come from a given source */ case IP_MULTICAST_ALL: /* Modify the delivery policy of * multicast messages bound to * INADDR_ANY */ #warning Missing logic nwarn("WARNING: Unimplemented IPv4 option: %d\n", option); ret = -ENOSYS; break; default: nerr("ERROR: Unrecognized IPv4 option: %d\n", option); ret = -ENOPROTOOPT; break; } net_unlock(); return ret; #else return -ENOPROTOOPT; #endif } #endif /* CONFIG_NET_IPv4 */