/* | |
* Copyright (c) 2001-2004 Swedish Institute of Computer Science. | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* 3. The name of the author may not be used to endorse or promote products | |
* derived from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY | |
* OF SUCH DAMAGE. | |
* | |
* This file is part of the lwIP TCP/IP stack. | |
* | |
* Author: Adam Dunkels <adam@sics.se> | |
* | |
*/ | |
#ifndef __LWIP_ICMP_H__ | |
#define __LWIP_ICMP_H__ | |
#include "lwip/arch.h" | |
#include "lwip/opt.h" | |
#include "lwip/pbuf.h" | |
#include "lwip/ip_addr.h" | |
#include "lwip/netif.h" | |
#define ICMP_ER 0 /* echo reply */ | |
#define ICMP_DUR 3 /* destination unreachable */ | |
#define ICMP_SQ 4 /* source quench */ | |
#define ICMP_RD 5 /* redirect */ | |
#define ICMP_ECHO 8 /* echo */ | |
#define ICMP_TE 11 /* time exceeded */ | |
#define ICMP_PP 12 /* parameter problem */ | |
#define ICMP_TS 13 /* timestamp */ | |
#define ICMP_TSR 14 /* timestamp reply */ | |
#define ICMP_IRQ 15 /* information request */ | |
#define ICMP_IR 16 /* information reply */ | |
enum icmp_dur_type { | |
ICMP_DUR_NET = 0, /* net unreachable */ | |
ICMP_DUR_HOST = 1, /* host unreachable */ | |
ICMP_DUR_PROTO = 2, /* protocol unreachable */ | |
ICMP_DUR_PORT = 3, /* port unreachable */ | |
ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */ | |
ICMP_DUR_SR = 5 /* source route failed */ | |
}; | |
enum icmp_te_type { | |
ICMP_TE_TTL = 0, /* time to live exceeded in transit */ | |
ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */ | |
}; | |
void icmp_input(struct pbuf *p, struct netif *inp); | |
void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t); | |
void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t); | |
#ifdef PACK_STRUCT_USE_INCLUDES | |
# include "arch/bpstruct.h" | |
#endif | |
PACK_STRUCT_BEGIN | |
struct icmp_echo_hdr { | |
PACK_STRUCT_FIELD(u16_t _type_code); | |
PACK_STRUCT_FIELD(u16_t chksum); | |
PACK_STRUCT_FIELD(u16_t id); | |
PACK_STRUCT_FIELD(u16_t seqno); | |
} PACK_STRUCT_STRUCT; | |
PACK_STRUCT_END | |
PACK_STRUCT_BEGIN | |
struct icmp_dur_hdr { | |
PACK_STRUCT_FIELD(u16_t _type_code); | |
PACK_STRUCT_FIELD(u16_t chksum); | |
PACK_STRUCT_FIELD(u32_t unused); | |
} PACK_STRUCT_STRUCT; | |
PACK_STRUCT_END | |
PACK_STRUCT_BEGIN | |
struct icmp_te_hdr { | |
PACK_STRUCT_FIELD(u16_t _type_code); | |
PACK_STRUCT_FIELD(u16_t chksum); | |
PACK_STRUCT_FIELD(u32_t unused); | |
} PACK_STRUCT_STRUCT; | |
PACK_STRUCT_END | |
#ifdef PACK_STRUCT_USE_INCLUDES | |
# include "arch/epstruct.h" | |
#endif | |
#define ICMPH_TYPE(hdr) (ntohs((hdr)->_type_code) >> 8) | |
#define ICMPH_CODE(hdr) (ntohs((hdr)->_type_code) & 0xff) | |
#define ICMPH_TYPE_SET(hdr, type) ((hdr)->_type_code = htons(ICMPH_CODE(hdr) | ((type) << 8))) | |
#define ICMPH_CODE_SET(hdr, code) ((hdr)->_type_code = htons((code) | (ICMPH_TYPE(hdr) << 8))) | |
#endif /* __LWIP_ICMP_H__ */ | |