BadVPN – Blame information for rev 1
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| Rev | Author | Line No. | Line |
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| 1 | office | 1 | /** |
| 2 | * @file |
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| 3 | * IGMP protocol definitions |
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| 4 | */ |
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| 5 | |||
| 6 | /* |
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| 7 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
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| 8 | * All rights reserved. |
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| 9 | * |
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| 10 | * Redistribution and use in source and binary forms, with or without modification, |
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| 11 | * are permitted provided that the following conditions are met: |
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| 12 | * |
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| 13 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 14 | * this list of conditions and the following disclaimer. |
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 16 | * this list of conditions and the following disclaimer in the documentation |
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| 17 | * and/or other materials provided with the distribution. |
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| 18 | * 3. The name of the author may not be used to endorse or promote products |
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| 19 | * derived from this software without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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| 24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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| 26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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| 30 | * OF SUCH DAMAGE. |
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| 31 | * |
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| 32 | * This file is part of the lwIP TCP/IP stack. |
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| 33 | * |
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| 34 | * Author: Adam Dunkels <adam@sics.se> |
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| 35 | * |
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| 36 | */ |
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| 37 | #ifndef LWIP_HDR_PROT_IGMP_H |
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| 38 | #define LWIP_HDR_PROT_IGMP_H |
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| 39 | |||
| 40 | #include "lwip/arch.h" |
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| 41 | #include "lwip/ip4_addr.h" |
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| 42 | |||
| 43 | #ifdef __cplusplus |
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| 44 | extern "C" { |
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| 45 | #endif |
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| 46 | |||
| 47 | /* |
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| 48 | * IGMP constants |
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| 49 | */ |
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| 50 | #define IGMP_TTL 1 |
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| 51 | #define IGMP_MINLEN 8 |
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| 52 | #define ROUTER_ALERT 0x9404U |
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| 53 | #define ROUTER_ALERTLEN 4 |
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| 54 | |||
| 55 | /* |
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| 56 | * IGMP message types, including version number. |
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| 57 | */ |
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| 58 | #define IGMP_MEMB_QUERY 0x11 /* Membership query */ |
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| 59 | #define IGMP_V1_MEMB_REPORT 0x12 /* Ver. 1 membership report */ |
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| 60 | #define IGMP_V2_MEMB_REPORT 0x16 /* Ver. 2 membership report */ |
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| 61 | #define IGMP_LEAVE_GROUP 0x17 /* Leave-group message */ |
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| 62 | |||
| 63 | /* Group membership states */ |
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| 64 | #define IGMP_GROUP_NON_MEMBER 0 |
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| 65 | #define IGMP_GROUP_DELAYING_MEMBER 1 |
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| 66 | #define IGMP_GROUP_IDLE_MEMBER 2 |
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| 67 | |||
| 68 | /** |
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| 69 | * IGMP packet format. |
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| 70 | */ |
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| 71 | #ifdef PACK_STRUCT_USE_INCLUDES |
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| 72 | # include "arch/bpstruct.h" |
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| 73 | #endif |
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| 74 | PACK_STRUCT_BEGIN |
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| 75 | struct igmp_msg { |
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| 76 | PACK_STRUCT_FLD_8(u8_t igmp_msgtype); |
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| 77 | PACK_STRUCT_FLD_8(u8_t igmp_maxresp); |
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| 78 | PACK_STRUCT_FIELD(u16_t igmp_checksum); |
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| 79 | PACK_STRUCT_FLD_S(ip4_addr_p_t igmp_group_address); |
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| 80 | } PACK_STRUCT_STRUCT; |
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| 81 | PACK_STRUCT_END |
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| 82 | #ifdef PACK_STRUCT_USE_INCLUDES |
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| 83 | # include "arch/epstruct.h" |
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| 84 | #endif |
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| 85 | |||
| 86 | #ifdef __cplusplus |
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| 87 | } |
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| 88 | #endif |
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| 89 | |||
| 90 | #endif /* LWIP_HDR_PROT_IGMP_H */ |