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.
155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/****************************************************************************
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* net/inet/ipv6_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 <errno.h>
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#include <debug.h>
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#include <netinet/in.h>
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#include <nuttx/net/net.h>
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#include "mld/mld.h"
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#include "inet/inet.h"
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#ifdef CONFIG_NET_IPv6
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ipv6_setsockopt
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*
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* Description:
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* ipv6_setsockopt() sets the IPv6-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 IPv6 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 ipv6_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_MLD
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int ret;
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ninfo("option: %d\n", option);
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/* Handle MLD-related socket options */
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switch (option)
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{
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case IPV6_JOIN_GROUP: /* Join a multicast group */
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{
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FAR const struct ipv6_mreq *mrec ;
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mrec = (FAR const struct ipv6_mreq *)value;
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if (mrec == NULL)
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{
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ret = -EINVAL;
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}
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else
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{
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ret = mld_joingroup(mrec);
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}
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}
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break;
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case IPV6_LEAVE_GROUP: /* Quit a multicast group */
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{
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FAR const struct ipv6_mreq *mrec ;
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mrec = (FAR const struct ipv6_mreq *)value;
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if (mrec == NULL)
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{
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ret = -EINVAL;
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}
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else
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{
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ret = mld_leavegroup(mrec);
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}
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}
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break;
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/* The following IPv6 socket options are defined, but not implemented */
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case IPV6_MULTICAST_HOPS: /* Multicast hop limit */
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case IPV6_MULTICAST_IF: /* Interface to use for outgoing multicast
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* packets */
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case IPV6_MULTICAST_LOOP: /* Multicast packets are delivered back to
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* the local application */
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case IPV6_UNICAST_HOPS: /* Unicast hop limit */
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case IPV6_V6ONLY: /* Restrict AF_INET6 socket to IPv6
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* communications only */
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nwarn("WARNING: Unimplemented IPv6 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 IPv6 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_IPv6 */
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