1 /**
2  * @file
3  * MLD6 protocol definitions
4  */
5 
6 /*
7  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without modification,
11  * are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright notice,
14  *    this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright notice,
16  *    this list of conditions and the following disclaimer in the documentation
17  *    and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
22  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
24  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30  * OF SUCH DAMAGE.
31  *
32  * This file is part of the lwIP TCP/IP stack.
33  *
34  * Author: Adam Dunkels <adam@sics.se>
35  *
36  */
37 #ifndef LWIP_HDR_PROT_MLD6_H
38 #define LWIP_HDR_PROT_MLD6_H
39 
40 #include "lwip/arch.h"
41 #include "lwip/prot/ip6.h"
42 
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46 
47 /** Multicast listener report/query/done message header. */
48 #ifdef PACK_STRUCT_USE_INCLUDES
49 #  include "arch/bpstruct.h"
50 #endif
51 PACK_STRUCT_BEGIN
52 struct mld_header {
53   PACK_STRUCT_FLD_8(u8_t type);
54   PACK_STRUCT_FLD_8(u8_t code);
55   PACK_STRUCT_FIELD(u16_t chksum);
56   PACK_STRUCT_FIELD(u16_t max_resp_delay);
57   PACK_STRUCT_FIELD(u16_t reserved);
58   PACK_STRUCT_FLD_S(ip6_addr_p_t multicast_address);
59   /* Options follow. */
60 } PACK_STRUCT_STRUCT;
61 PACK_STRUCT_END
62 #ifdef PACK_STRUCT_USE_INCLUDES
63 #  include "arch/epstruct.h"
64 #endif
65 
66 #ifdef __cplusplus
67 }
68 #endif
69 
70 #endif /* LWIP_HDR_PROT_MLD6_H */
71