| /* |
| * 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__ */ |