File content as of revision 2:540f6e142d59:

/*********************************************************************
PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
See LICENSE and COPYING for usage.

.

*********************************************************************/
#ifndef _INCLUDE_PICO_ICMP4
#define _INCLUDE_PICO_ICMP4
#include "pico_addressing.h"
#include "pico_protocol.h"

extern struct pico_protocol pico_proto_icmp4;

struct __attribute__((packed)) pico_icmp4_hdr {
  uint8_t type;
  uint8_t code;
  uint16_t crc;

  /* hun */
  union {
    uint8_t ih_pptr;
    struct pico_ip4 ih_gwaddr;
    struct {
      uint16_t idseq_id;
      uint16_t idseq_seq;
    } ih_idseq;
    uint32_t ih_void;
    struct {
      uint16_t ipm_void;
      uint16_t ipm_nmtu;
    } ih_pmtu;
    struct {
      uint8_t rta_numgw;
      uint8_t rta_wpa;
      uint16_t rta_lifetime;
    } ih_rta;
  } hun;

  /* dun */
  union {
    struct {
      uint32_t ts_otime;
      uint32_t ts_rtime;
      uint32_t ts_ttime;
    } id_ts;
    struct {
      uint32_t ip_options;
      uint32_t ip_data_hi;
      uint32_t ip_data_lo;
    } id_ip;
    struct {
      uint32_t ira_addr;
      uint32_t ira_pref;
    } id_ra;
    uint32_t id_mask;
    uint8_t  id_data[1];
  } dun;
};

#define PICO_ICMPHDR_DRY_SIZE  4
#define PICO_ICMPHDR_UN_SIZE  8

#define PICO_ICMP_ECHOREPLY    0 
#define PICO_ICMP_DEST_UNREACH 3 
#define PICO_ICMP_SOURCE_QUENCH  4
#define PICO_ICMP_REDIRECT   5
#define PICO_ICMP_ECHO   8
#define PICO_ICMP_TIME_EXCEEDED  11
#define PICO_ICMP_PARAMETERPROB  12
#define PICO_ICMP_TIMESTAMP    13
#define PICO_ICMP_TIMESTAMPREPLY 14
#define PICO_ICMP_INFO_REQUEST 15
#define PICO_ICMP_INFO_REPLY   16
#define PICO_ICMP_ADDRESS    17
#define PICO_ICMP_ADDRESSREPLY 18


#define  PICO_ICMP_UNREACH    3  
#define  PICO_ICMP_SOURCEQUENCH  4  
#define  PICO_ICMP_ROUTERADVERT  9  
#define  PICO_ICMP_ROUTERSOLICIT  10  
#define  PICO_ICMP_TIMXCEED    11  
#define  PICO_ICMP_PARAMPROB    12  
#define  PICO_ICMP_TSTAMP    13  
#define  PICO_ICMP_TSTAMPREPLY  14  
#define  PICO_ICMP_IREQ    15  
#define  PICO_ICMP_IREQREPLY    16    
#define  PICO_ICMP_MASKREQ    17    
#define  PICO_ICMP_MASKREPLY    18    

#define  PICO_ICMP_MAXTYPE    18


#define  PICO_ICMP_UNREACH_NET          0  
#define  PICO_ICMP_UNREACH_HOST          1  
#define  PICO_ICMP_UNREACH_PROTOCOL          2  
#define  PICO_ICMP_UNREACH_PORT          3  
#define  PICO_ICMP_UNREACH_NEEDFRAG          4  
#define  PICO_ICMP_UNREACH_SRCFAIL          5  
#define  PICO_ICMP_UNREACH_NET_UNKNOWN        6  
#define  PICO_ICMP_UNREACH_HOST_UNKNOWN       7  
#define  PICO_ICMP_UNREACH_ISOLATED          8  
#define  PICO_ICMP_UNREACH_NET_PROHIB          9  
#define  PICO_ICMP_UNREACH_HOST_PROHIB        10  
#define  PICO_ICMP_UNREACH_TOSNET          11  
#define  PICO_ICMP_UNREACH_TOSHOST          12  
#define  PICO_ICMP_UNREACH_FILTER_PROHIB      13  
#define  PICO_ICMP_UNREACH_HOST_PRECEDENCE    14  
#define  PICO_ICMP_UNREACH_PRECEDENCE_CUTOFF  15  


#define  PICO_ICMP_REDIRECT_NET  0    
#define  PICO_ICMP_REDIRECT_HOST  1    
#define  PICO_ICMP_REDIRECT_TOSNET  2    
#define  PICO_ICMP_REDIRECT_TOSHOST  3    


#define  PICO_ICMP_TIMXCEED_INTRANS  0    
#define  PICO_ICMP_TIMXCEED_REASS  1    


#define  PICO_ICMP_PARAMPROB_OPTABSENT 1    

#define PICO_SIZE_ICMP4HDR ((sizeof(struct pico_icmp4_hdr)))

struct pico_icmp4_stats
{
  struct pico_ip4 dst;
  unsigned long size;
  unsigned long seq;
  unsigned long time;
  unsigned long ttl;
  int err;
};

int pico_icmp4_port_unreachable(struct pico_frame *f);
int pico_icmp4_proto_unreachable(struct pico_frame *f);
int pico_icmp4_dest_unreachable(struct pico_frame *f);
int pico_icmp4_ttl_expired(struct pico_frame *f);
int pico_icmp4_packet_filtered(struct pico_frame *f);

int pico_icmp4_ping(char *dst, int count, int interval, int timeout, int size, void (*cb)(struct pico_icmp4_stats *));
#define PICO_PING_ERR_REPLIED 0
#define PICO_PING_ERR_TIMEOUT 1
#define PICO_PING_ERR_UNREACH 2
#define PICO_PING_ERR_PENDING 0xFFFF

#endif