229 lines
8.2 KiB
C
229 lines
8.2 KiB
C
/****************************************************************************
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* net/inet/ipv4_setsockopt.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/net/net.h>
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#include <netinet/in.h>
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#include "netdev/netdev.h"
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#include "igmp/igmp.h"
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#include "inet/inet.h"
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#ifdef CONFIG_NET_IPv4
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ipv4_setsockopt
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*
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* Description:
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* ipv4_setsockopt() sets the IPv4-protocol socket option specified by the
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* 'option' argument to the value pointed to by the 'value' argument for
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* the socket specified by the 'psock' argument.
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*
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* See <netinet/in.h> for the a complete list of values of IPv4 protocol
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* socket options.
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*
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* Input Parameters:
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* psock Socket structure of socket to operate on
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* option identifies the option to set
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error. See psock_setcockopt() for
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* the list of possible error values.
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*
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****************************************************************************/
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int ipv4_setsockopt(FAR struct socket *psock, int option,
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FAR const void *value, socklen_t value_len)
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{
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#ifdef CONFIG_NET_IGMP
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int ret;
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ninfo("option: %d\n", option);
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/* With IPv4, the multicast-related socket options are simply an alternative
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* way to access IGMP. That IGMP functionality can also be accessed via
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* IOCTL commands (see netdev/netdev_ioctl.c)
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*
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* REVISIT: Clone the logic from netdev_ioctl.c here.
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*/
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net_lock();
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switch (option)
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{
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case IP_MSFILTER: /* Access advanced, full-state filtering API */
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{
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#if 0 /* REVISIT: This is not a proper implementation of IP_MSGFILTER */
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FAR const struct ip_msfilter *imsf;
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FAR struct net_driver_s *dev;
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imsf = (FAR const struct ip_msfilter *)value;
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if (imsf == NULL || value_len < sizeof(struct ip_msfilter))
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{
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nerr("ERROR: Bad value or value_len\n");
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ret = -EINVAL;
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}
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else
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{
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/* Get the device associated with the local interface address */
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dev = netdev_findby_lipv4addr(imsf->imsf_interface.s_addr);
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if (dev == NULL)
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{
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nwarn("WARNING: Could not find device for imsf_interface\n");
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ret = -ENODEV;
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}
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else if (imsf->imsf_fmode == MCAST_INCLUDE)
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{
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ret = igmp_joingroup(dev, &imsf->imsf_multiaddr);
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}
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else
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{
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DEBUGASSERT(imsf->imsf_fmode == MCAST_EXCLUDE);
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ret = igmp_leavegroup(dev, &imsf->imsf_multiaddr);
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}
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}
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#else
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ret = -ENOSYS;
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#endif
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}
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break;
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case IP_ADD_MEMBERSHIP: /* Join a multicast group */
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case IP_DROP_MEMBERSHIP: /* Leave a multicast group */
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{
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FAR const struct ip_mreq *mrec;
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FAR struct net_driver_s *dev;
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/* REVISIT: This is not a proper implementation of IP_MSGFILTER */
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mrec = (FAR const struct ip_mreq *)value;
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if (mrec == NULL || value_len < sizeof(struct ip_mreq))
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{
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nerr("ERROR: Bad value or value_len\n");
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ret = -EINVAL;
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}
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else
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{
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/* Use the default network device is imr_interface is INADDRY_ANY. */
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if (mrec->imr_interface.s_addr == INADDR_ANY)
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{
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dev = netdev_default();
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}
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else
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{
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/* Get the device associated with the local interface address */
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dev = netdev_findby_lipv4addr(mrec->imr_interface.s_addr);
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}
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if (dev == NULL)
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{
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nwarn("WARNING: Could not find device for imr_interface\n");
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ret = -ENODEV;
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}
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else if (option == IP_ADD_MEMBERSHIP)
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{
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ret = igmp_joingroup(dev, &mrec->imr_multiaddr);
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}
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else
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{
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ret = igmp_leavegroup(dev, &mrec->imr_multiaddr);
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}
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}
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}
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break;
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/* The following IPv4 socket options are defined, but not implemented */
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case IP_MULTICAST_IF: /* Set local device for a multicast
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* socket */
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case IP_MULTICAST_TTL: /* Set/read the time-to-live value of
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* outgoing multicast packets */
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case IP_MULTICAST_LOOP: /* Set/read boolean that determines
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* whether sent multicast packets
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* should be looped back to local
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* sockets. */
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case IP_UNBLOCK_SOURCE: /* Unblock previously blocked multicast
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* source */
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case IP_BLOCK_SOURCE: /* Stop receiving multicast data from
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* source */
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case IP_ADD_SOURCE_MEMBERSHIP: /* Join a multicast group; allow receive
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* only from source */
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case IP_DROP_SOURCE_MEMBERSHIP: /* Leave a source-specific group. Stop
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* receiving data from a given multicast
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* group that come from a given source */
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case IP_MULTICAST_ALL: /* Modify the delivery policy of
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* multicast messages bound to
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* INADDR_ANY */
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#warning Missing logic
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nwarn("WARNING: Unimplemented IPv4 option: %d\n", option);
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ret = -ENOSYS;
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break;
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default:
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nerr("ERROR: Unrecognized IPv4 option: %d\n", option);
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ret = -ENOPROTOOPT;
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break;
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}
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net_unlock();
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return ret;
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#else
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return -ENOPROTOOPT;
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#endif
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}
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#endif /* CONFIG_NET_IPv4 */
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