/**************************************************************************** * net/inet/ipv6_setsockopt.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include "mld/mld.h" #include "inet/inet.h" #include "socket/socket.h" #if defined(CONFIG_NET_IPv6) && defined(CONFIG_NET_SOCKOPTS) /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: ipv6_setsockopt * * Description: * ipv6_setsockopt() sets the IPv6-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 IPv6 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 ipv6_setsockopt(FAR struct socket *psock, int option, FAR const void *value, socklen_t value_len) { int ret; ninfo("option: %d\n", option); net_lock(); switch (option) { #ifdef CONFIG_NET_MLD /* Handle MLD-related socket options */ case IPV6_JOIN_GROUP: /* Join a multicast group */ { FAR const struct ipv6_mreq *mrec ; mrec = (FAR const struct ipv6_mreq *)value; if (mrec == NULL) { ret = -EINVAL; } else { ret = mld_joingroup(mrec); } } break; case IPV6_LEAVE_GROUP: /* Quit a multicast group */ { FAR const struct ipv6_mreq *mrec ; mrec = (FAR const struct ipv6_mreq *)value; if (mrec == NULL) { ret = -EINVAL; } else { ret = mld_leavegroup(mrec); } } break; /* The following IPv6 socket options are defined, but not implemented */ case IPV6_MULTICAST_HOPS: /* Multicast hop limit */ case IPV6_MULTICAST_IF: /* Interface to use for outgoing multicast * packets */ case IPV6_MULTICAST_LOOP: /* Multicast packets are delivered back to * the local application */ #endif case IPV6_UNICAST_HOPS: /* Unicast hop limit */ case IPV6_V6ONLY: /* Restrict AF_INET6 socket to IPv6 * communications only */ nwarn("WARNING: Unimplemented IPv6 option: %d\n", option); ret = -ENOSYS; break; case IPV6_RECVPKTINFO: { FAR struct socket_conn_s *conn; int enable; if (value == NULL || value_len == 0) { ret = -EINVAL; break; } enable = (value_len >= sizeof(int)) ? *(FAR int *)value : (int)*(FAR unsigned char *)value; conn = psock->s_conn; if (enable) { _SO_SETOPT(conn->s_options, option); } else { _SO_CLROPT(conn->s_options, option); } ret = OK; } break; case IPV6_TCLASS: { FAR struct socket_conn_s *conn = (FAR struct socket_conn_s *)psock->s_conn; int tclass; tclass = (value_len >= sizeof(int)) ? *(FAR int *)value : (int)*(FAR unsigned char *)value; /* According to RFC3542 6.5, the interpretation of the integer * traffic class value is: * x < -1: return an error of EINVAL * x == -1: use kernel default * 0 <= x <= 255: use x * x >= 256: return an error of EINVAL */ if (tclass < -1 || tclass > 0xff) { nerr("ERROR: invalid tclass:%d\n", tclass); ret = -EINVAL; } else { if (tclass == -1) { /* Default value is 0 */ tclass = 0; } conn->s_tclass = tclass; ret = OK; } } break; default: nerr("ERROR: Unrecognized IPv6 option: %d\n", option); ret = -ENOPROTOOPT; break; } net_unlock(); return ret; } #endif /* CONFIG_NET_IPv6 */