Pehr Hovey / Mbed 2 deprecated UDPtest

Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed

Dependencies:   mbed

Core/lwIP/include/ipv4/lwip/icmp.h@0:a548a085de55, 2010-03-14 (annotated)

Committer:
pehrhovey
Date:
Sun Mar 14 00:54:12 2010 +0000
Revision:
0:a548a085de55

        

        
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/*





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 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.





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 * All rights reserved. 





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 * 





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 * Redistribution and use in source and binary forms, with or without modification, 





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 * are permitted provided that the following conditions are met:





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 *





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 * 1. Redistributions of source code must retain the above copyright notice,





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 *    this list of conditions and the following disclaimer.





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 * 2. Redistributions in binary form must reproduce the above copyright notice,





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 *    this list of conditions and the following disclaimer in the documentation





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 *    and/or other materials provided with the distribution.





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 * 3. The name of the author may not be used to endorse or promote products





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 *    derived from this software without specific prior written permission. 





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 *





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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 





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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 





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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 





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 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 





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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 





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 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 





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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 





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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 





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 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 





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 * OF SUCH DAMAGE.





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 *





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 * This file is part of the lwIP TCP/IP stack.





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 * 





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 * Author: Adam Dunkels <adam@sics.se>





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 *





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 */





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#ifndef __LWIP_ICMP_H__





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#define __LWIP_ICMP_H__





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#include "lwip/opt.h"





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#if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */





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#include "lwip/pbuf.h"





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#include "lwip/ip_addr.h"





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#include "lwip/netif.h"





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#ifdef __cplusplus





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extern "C" {





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#endif





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#define ICMP_ER 0      /* echo reply */





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#define ICMP_DUR 3     /* destination unreachable */





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#define ICMP_SQ 4      /* source quench */





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#define ICMP_RD 5      /* redirect */





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#define ICMP_ECHO 8    /* echo */





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#define ICMP_TE 11     /* time exceeded */





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#define ICMP_PP 12     /* parameter problem */





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#define ICMP_TS 13     /* timestamp */





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#define ICMP_TSR 14    /* timestamp reply */





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#define ICMP_IRQ 15    /* information request */





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#define ICMP_IR 16     /* information reply */





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enum icmp_dur_type {





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  ICMP_DUR_NET = 0,    /* net unreachable */





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  ICMP_DUR_HOST = 1,   /* host unreachable */





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  ICMP_DUR_PROTO = 2,  /* protocol unreachable */





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  ICMP_DUR_PORT = 3,   /* port unreachable */





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  ICMP_DUR_FRAG = 4,   /* fragmentation needed and DF set */





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  ICMP_DUR_SR = 5      /* source route failed */





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};





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enum icmp_te_type {





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  ICMP_TE_TTL = 0,     /* time to live exceeded in transit */





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  ICMP_TE_FRAG = 1     /* fragment reassembly time exceeded */





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};





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void icmp_input(struct pbuf *p, struct netif *inp);





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void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);





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void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);





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#ifdef PACK_STRUCT_USE_INCLUDES





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#  include "arch/bpstruct.h"





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#endif





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/** This is the standard ICMP header only that the u32_t data





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 *  is splitted to two u16_t like ICMP echo needs it.





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 *  This header is also used for other ICMP types that do not





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 *  use the data part.





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 */





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PACK_STRUCT_BEGIN





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struct icmp_echo_hdr {





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  PACK_STRUCT_FIELD(u8_t type);





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  PACK_STRUCT_FIELD(u8_t code);





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  PACK_STRUCT_FIELD(u16_t chksum);





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  PACK_STRUCT_FIELD(u16_t id);





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  PACK_STRUCT_FIELD(u16_t seqno);





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} PACK_STRUCT_STRUCT;





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PACK_STRUCT_END





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#ifdef PACK_STRUCT_USE_INCLUDES





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#  include "arch/epstruct.h"





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#endif





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#define ICMPH_TYPE(hdr) ((hdr)->type)





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#define ICMPH_CODE(hdr) ((hdr)->code)





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/** Combines type and code to an u16_t */





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#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))





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#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))





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#ifdef __cplusplus





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}





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#endif





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#endif /* LWIP_ICMP */





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#endif /* __LWIP_ICMP_H__ */