[164] | 1 | /*
|
---|
| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
---|
| 3 | * All rights reserved.
|
---|
| 4 | *
|
---|
| 5 | * Redistribution and use in source and binary forms, with or without modification,
|
---|
| 6 | * are permitted provided that the following conditions are met:
|
---|
| 7 | *
|
---|
| 8 | * 1. Redistributions of source code must retain the above copyright notice,
|
---|
| 9 | * this list of conditions and the following disclaimer.
|
---|
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
|
---|
| 11 | * this list of conditions and the following disclaimer in the documentation
|
---|
| 12 | * and/or other materials provided with the distribution.
|
---|
| 13 | * 3. The name of the author may not be used to endorse or promote products
|
---|
| 14 | * derived from this software without specific prior written permission.
|
---|
| 15 | *
|
---|
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
---|
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
---|
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
---|
| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
---|
| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
---|
| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
---|
| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
---|
| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
---|
| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
---|
| 25 | * OF SUCH DAMAGE.
|
---|
| 26 | *
|
---|
| 27 | * This file is part of the lwIP TCP/IP stack.
|
---|
| 28 | *
|
---|
| 29 | * Author: Adam Dunkels <adam@sics.se>
|
---|
| 30 | *
|
---|
| 31 | */
|
---|
| 32 | #ifndef __LWIP_ICMP_H__
|
---|
| 33 | #define __LWIP_ICMP_H__
|
---|
| 34 |
|
---|
| 35 | #include "lwip/opt.h"
|
---|
| 36 | #include "lwip/pbuf.h"
|
---|
| 37 | #include "lwip/ip_addr.h"
|
---|
| 38 | #include "lwip/netif.h"
|
---|
| 39 |
|
---|
| 40 | #ifdef __cplusplus
|
---|
| 41 | extern "C" {
|
---|
| 42 | #endif
|
---|
| 43 |
|
---|
| 44 | #define ICMP_ER 0 /* echo reply */
|
---|
| 45 | #define ICMP_DUR 3 /* destination unreachable */
|
---|
| 46 | #define ICMP_SQ 4 /* source quench */
|
---|
| 47 | #define ICMP_RD 5 /* redirect */
|
---|
| 48 | #define ICMP_ECHO 8 /* echo */
|
---|
| 49 | #define ICMP_TE 11 /* time exceeded */
|
---|
| 50 | #define ICMP_PP 12 /* parameter problem */
|
---|
| 51 | #define ICMP_TS 13 /* timestamp */
|
---|
| 52 | #define ICMP_TSR 14 /* timestamp reply */
|
---|
| 53 | #define ICMP_IRQ 15 /* information request */
|
---|
| 54 | #define ICMP_IR 16 /* information reply */
|
---|
| 55 |
|
---|
| 56 | enum icmp_dur_type {
|
---|
| 57 | ICMP_DUR_NET = 0, /* net unreachable */
|
---|
| 58 | ICMP_DUR_HOST = 1, /* host unreachable */
|
---|
| 59 | ICMP_DUR_PROTO = 2, /* protocol unreachable */
|
---|
| 60 | ICMP_DUR_PORT = 3, /* port unreachable */
|
---|
| 61 | ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */
|
---|
| 62 | ICMP_DUR_SR = 5 /* source route failed */
|
---|
| 63 | };
|
---|
| 64 |
|
---|
| 65 | enum icmp_te_type {
|
---|
| 66 | ICMP_TE_TTL = 0, /* time to live exceeded in transit */
|
---|
| 67 | ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */
|
---|
| 68 | };
|
---|
| 69 |
|
---|
| 70 | #ifdef PACK_STRUCT_USE_INCLUDES
|
---|
| 71 | # include "arch/bpstruct.h"
|
---|
| 72 | #endif
|
---|
| 73 | /** This is the standard ICMP header only that the u32_t data
|
---|
| 74 | * is splitted to two u16_t like ICMP echo needs it.
|
---|
| 75 | * This header is also used for other ICMP types that do not
|
---|
| 76 | * use the data part.
|
---|
| 77 | */
|
---|
| 78 | PACK_STRUCT_BEGIN
|
---|
| 79 | struct icmp_echo_hdr {
|
---|
| 80 | PACK_STRUCT_FIELD(u8_t type);
|
---|
| 81 | PACK_STRUCT_FIELD(u8_t code);
|
---|
| 82 | PACK_STRUCT_FIELD(u16_t chksum);
|
---|
| 83 | PACK_STRUCT_FIELD(u16_t id);
|
---|
| 84 | PACK_STRUCT_FIELD(u16_t seqno);
|
---|
| 85 | } PACK_STRUCT_STRUCT;
|
---|
| 86 | PACK_STRUCT_END
|
---|
| 87 | #ifdef PACK_STRUCT_USE_INCLUDES
|
---|
| 88 | # include "arch/epstruct.h"
|
---|
| 89 | #endif
|
---|
| 90 |
|
---|
| 91 | #define ICMPH_TYPE(hdr) ((hdr)->type)
|
---|
| 92 | #define ICMPH_CODE(hdr) ((hdr)->code)
|
---|
| 93 |
|
---|
| 94 | /** Combines type and code to an u16_t */
|
---|
| 95 | #define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
|
---|
| 96 | #define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
|
---|
| 97 |
|
---|
| 98 |
|
---|
| 99 | #if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
|
---|
| 100 |
|
---|
| 101 | void icmp_input(struct pbuf *p, struct netif *inp);
|
---|
| 102 | void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
|
---|
| 103 | void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
|
---|
| 104 |
|
---|
| 105 | #endif /* LWIP_ICMP */
|
---|
| 106 |
|
---|
| 107 | #ifdef __cplusplus
|
---|
| 108 | }
|
---|
| 109 | #endif
|
---|
| 110 |
|
---|
| 111 | #endif /* __LWIP_ICMP_H__ */
|
---|