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 #if defined (__cplusplus) && __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 #ifndef MLD6_ROBUSTNESS_VARIABLE 67 #define MLD6_ROBUSTNESS_VARIABLE 5 68 #endif /* MLD6_ROBUSTNESS_VARIABLE */ 69 70 #ifndef MLD6_QUERY_INTERVAL 71 #define MLD6_QUERY_INTERVAL 125 /* in units of seconds */ 72 #endif /* MLD6_QUERY_INTERVAL */ 73 74 #ifndef MLD6_STARTUP_QUERY_COUNT 75 #define MLD6_STARTUP_QUERY_COUNT (MLD6_ROBUSTNESS_VARIABLE) 76 #endif /* MLD6_STARTUP_QUERY_COUNT */ 77 78 #ifndef MLD6_STARTUP_QUERY_INTERVAL 79 #define MLD6_STARTUP_QUERY_INTERVAL 1 /* in units of seconds */ 80 #endif /* MLD6_STARTUP_QUERY_INTERVAL */ 81 82 /* The number of seconds represented by the [Query Response Interval] must be less than the [Query Interval] */ 83 #ifndef MLD6_QUERY_RESPONSE_INTERVAL 84 #define MLD6_QUERY_RESPONSE_INTERVAL 10000 /* in units of milliseconds */ 85 #endif /* MLD6_QUERY_RESPONSE_INTERVAL */ 86 87 #if (((MLD6_QUERY_RESPONSE_INTERVAL) / 1000) >= MLD6_QUERY_INTERVAL) 88 #error "The number of seconds represented by the [Query Response Interval] must be less than the [Query Interval]" 89 #endif 90 91 #ifndef MLD6_LISTENER_INTERVAL 92 #define MLD6_LISTENER_INTERVAL (((MLD6_ROBUSTNESS_VARIABLE) * (MLD6_QUERY_INTERVAL)) + \ 93 ((MLD6_QUERY_RESPONSE_INTERVAL) / (MLD6_MS_PER_SECOND))) 94 #endif /* MLD6_LISTENER_INTERVAL */ 95 96 #ifndef MLD6_LAST_LISTENER_QUERY_INTERVAL 97 #define MLD6_LAST_LISTENER_QUERY_INTERVAL 1000 /* in units of milliseconds */ 98 #endif /* MLD6_LAST_LISTENER_QUERY_INTERVAL */ 99 100 #ifndef MLD6_LAST_LISTENER_QUERY_COUNT 101 #define MLD6_LAST_LISTENER_QUERY_COUNT (MLD6_ROBUSTNESS_VARIABLE) 102 #endif /* MLD6_LAST_LISTENER_QUERY_COUNT */ 103 104 #if defined (__cplusplus) && __cplusplus 105 } 106 #endif 107 108 #endif /* LWIP_HDR_PROT_MLD6_H */ 109