[457] | 1 | /**
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| 2 | * @file
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| 3 | * ICMP protocol definitions
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| 4 | */
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| 5 |
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| 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_ICMP_H
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| 38 | #define LWIP_HDR_PROT_ICMP_H
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| 39 |
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| 40 | #include "lwip/arch.h"
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| 41 |
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| 42 | #ifdef __cplusplus
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| 43 | extern "C" {
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| 44 | #endif
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| 45 |
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| 46 | #define ICMP_ER 0 /* echo reply */
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| 47 | #define ICMP_DUR 3 /* destination unreachable */
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| 48 | #define ICMP_SQ 4 /* source quench */
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| 49 | #define ICMP_RD 5 /* redirect */
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| 50 | #define ICMP_ECHO 8 /* echo */
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| 51 | #define ICMP_TE 11 /* time exceeded */
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| 52 | #define ICMP_PP 12 /* parameter problem */
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| 53 | #define ICMP_TS 13 /* timestamp */
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| 54 | #define ICMP_TSR 14 /* timestamp reply */
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| 55 | #define ICMP_IRQ 15 /* information request */
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| 56 | #define ICMP_IR 16 /* information reply */
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| 57 | #define ICMP_AM 17 /* address mask request */
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| 58 | #define ICMP_AMR 18 /* address mask reply */
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| 59 |
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| 60 | #ifdef PACK_STRUCT_USE_INCLUDES
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| 61 | # include "arch/bpstruct.h"
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| 62 | #endif
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| 63 | /** This is the standard ICMP header only that the u32_t data
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| 64 | * is split to two u16_t like ICMP echo needs it.
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| 65 | * This header is also used for other ICMP types that do not
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| 66 | * use the data part.
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| 67 | */
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| 68 | PACK_STRUCT_BEGIN
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| 69 | struct icmp_echo_hdr {
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| 70 | PACK_STRUCT_FLD_8(u8_t type);
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| 71 | PACK_STRUCT_FLD_8(u8_t code);
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| 72 | PACK_STRUCT_FIELD(u16_t chksum);
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| 73 | PACK_STRUCT_FIELD(u16_t id);
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| 74 | PACK_STRUCT_FIELD(u16_t seqno);
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| 75 | } PACK_STRUCT_STRUCT;
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| 76 | PACK_STRUCT_END
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| 77 | #ifdef PACK_STRUCT_USE_INCLUDES
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| 78 | # include "arch/epstruct.h"
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| 79 | #endif
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| 80 |
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| 81 | /* Compatibility defines, old versions used to combine type and code to an u16_t */
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| 82 | #define ICMPH_TYPE(hdr) ((hdr)->type)
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| 83 | #define ICMPH_CODE(hdr) ((hdr)->code)
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| 84 | #define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
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| 85 | #define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
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| 86 |
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| 87 | #ifdef __cplusplus
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| 88 | }
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| 89 | #endif
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| 90 |
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| 91 | #endif /* LWIP_HDR_PROT_ICMP_H */
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