6c0ab0e077
include/nuttx/net/ipv6ext.h: Fix some terminology: Hop-by-hop, not Hop-to-hop or Hop2hop.
net/devif/ipv6_input.c and net/icmpv6/icmpv6_input.c: Add logic to skiip over the variable number of IPv6 extension headers that may be present between the IPv6 header and the transport layer header. The extension headers are simply ignored. This is necessary because with MLD, certain incoming messages may have, at a mimimum, a Router Alert Hop-by-hop extension header.
net/inet/ipv6_setsockopt.c: Implement the IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP socket options.
227 lines
8.2 KiB
C
227 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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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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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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