112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
|
/*
|
||
|
|
* 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/opt.h"
|
||
|
|
#include "lwip/pbuf.h"
|
||
|
|
#include "lwip/ip_addr.h"
|
||
|
|
#include "lwip/netif.h"
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#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 */
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
||
|
|
# include "arch/bpstruct.h"
|
||
|
|
#endif
|
||
|
|
/** This is the standard ICMP header only that the u32_t data
|
||
|
|
* is splitted to two u16_t like ICMP echo needs it.
|
||
|
|
* This header is also used for other ICMP types that do not
|
||
|
|
* use the data part.
|
||
|
|
*/
|
||
|
|
PACK_STRUCT_BEGIN
|
||
|
|
struct icmp_echo_hdr {
|
||
|
|
PACK_STRUCT_FIELD(u8_t type);
|
||
|
|
PACK_STRUCT_FIELD(u8_t 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
|
||
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
||
|
|
# include "arch/epstruct.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define ICMPH_TYPE(hdr) ((hdr)->type)
|
||
|
|
#define ICMPH_CODE(hdr) ((hdr)->code)
|
||
|
|
|
||
|
|
/** Combines type and code to an u16_t */
|
||
|
|
#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
|
||
|
|
#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
|
||
|
|
|
||
|
|
|
||
|
|
#if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
#endif /* LWIP_ICMP */
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __LWIP_ICMP_H__ */
|