mld6.h

00001 /**
00002  * @file
00003  * MLD6 protocol definitions
00004  */
00005 
00006 /*
00007  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
00008  * All rights reserved.
00009  *
00010  * Redistribution and use in source and binary forms, with or without modification,
00011  * are permitted provided that the following conditions are met:
00012  *
00013  * 1. Redistributions of source code must retain the above copyright notice,
00014  *    this list of conditions and the following disclaimer.
00015  * 2. Redistributions in binary form must reproduce the above copyright notice,
00016  *    this list of conditions and the following disclaimer in the documentation
00017  *    and/or other materials provided with the distribution.
00018  * 3. The name of the author may not be used to endorse or promote products
00019  *    derived from this software without specific prior written permission.
00020  *
00021  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00022  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00023  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00024  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00025  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00029  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00030  * OF SUCH DAMAGE.
00031  *
00032  * This file is part of the lwIP TCP/IP stack.
00033  *
00034  * Author: Adam Dunkels <adam@sics.se>
00035  *
00036  */
00037 #ifndef LWIP_HDR_PROT_MLD6_H
00038 #define LWIP_HDR_PROT_MLD6_H
00039 
00040 #include "lwip/arch.h"
00041 #include "lwip/prot/ip6.h"
00042 
00043 #ifdef __cplusplus
00044 extern "C" {
00045 #endif
00046 
00047 #define MLD6_HBH_HLEN 8
00048 /** Multicast listener report/query/done message header. */
00049 #ifdef PACK_STRUCT_USE_INCLUDES
00050 #  include "arch/bpstruct.h"
00051 #endif
00052 PACK_STRUCT_BEGIN
00053 struct mld_header {
00054   PACK_STRUCT_FLD_8(u8_t type);
00055   PACK_STRUCT_FLD_8(u8_t code);
00056   PACK_STRUCT_FIELD(u16_t chksum);
00057   PACK_STRUCT_FIELD(u16_t max_resp_delay);
00058   PACK_STRUCT_FIELD(u16_t reserved);
00059   PACK_STRUCT_FLD_S(ip6_addr_p_t multicast_address);
00060   /* Options follow. */
00061 } PACK_STRUCT_STRUCT;
00062 PACK_STRUCT_END
00063 #ifdef PACK_STRUCT_USE_INCLUDES
00064 #  include "arch/epstruct.h"
00065 #endif
00066 
00067 #ifdef __cplusplus
00068 }
00069 #endif
00070 
00071 #endif /* LWIP_HDR_PROT_MLD6_H */