libdb/uIP/uip_icmp.h

   1 #ifndef __UIP_ICMP_H__
   2 #define __UIP_ICMP_H__
   3
   4 #include "uip.h"
   5 #include "uip_arch.h"
   6
   7 #define UIP_ICMP_TTL            255
   8
   9 #define UIP_ICMP_ER 0      /* echo reply */
  10 #define UIP_ICMP_DUR 3     /* destination unreachable */
  11 #define UIP_ICMP_SQ 4      /* source quench */
  12 #define UIP_ICMP_RD 5      /* redirect */
  13 #define UIP_ICMP_ECHO 8    /* echo */
  14 #define UIP_ICMP_TE 11     /* time exceeded */
  15 #define UIP_ICMP_PP 12     /* parameter problem */
  16 #define UIP_ICMP_TS 13     /* timestamp */
  17 #define UIP_ICMP_TSR 14    /* timestamp reply */
  18 #define UIP_ICMP_IRQ 15    /* information request */
  19 #define UIP_ICMP_IR 16     /* information reply */
  20
  21 #define UIP_ICMPH_TYPE(hdr) (ntohs((hdr)->_type_code) >> 8)
  22 #define UIP_ICMPH_CODE(hdr) (ntohs((hdr)->_type_code) & 0xff)
  23
  24 #define UIP_ICMPH_TYPE_SET(hdr, type) ((hdr)->_type_code = htons(UIP_ICMPH_CODE(hdr) | ((type) << 8)))
  25 #define UIP_ICMPH_CODE_SET(hdr, code) ((hdr)->_type_code = htons((code) | (UIP_ICMPH_TYPE(hdr) << 8)))
  26
  27 enum uip_icmp_dur_type {
  28   UIP_ICMP_DUR_NET = 0,    /* net unreachable */
  29   UIP_ICMP_DUR_HOST = 1,   /* host unreachable */
  30   UIP_ICMP_DUR_PROTO = 2,  /* protocol unreachable */
  31   UIP_ICMP_DUR_PORT = 3,   /* port unreachable */
  32   UIP_ICMP_DUR_FRAG = 4,   /* fragmentation needed and DF set */
  33   UIP_ICMP_DUR_SR = 5      /* source route failed */
  34 };
  35
  36 PACK_STRUCT_BEGIN
  37 struct uip_icmp_echo_hdr {
  38         PACK_STRUCT_FIELD(u16_t _type_code);
  39         PACK_STRUCT_FIELD(u16_t chksum);
  40         PACK_STRUCT_FIELD(u16_t id);
  41         PACK_STRUCT_FIELD(u16_t seqno);
  42 } PACK_STRUCT_STRUCT;
  43 PACK_STRUCT_END
  44
  45 PACK_STRUCT_BEGIN
  46 struct uip_icmp_dur_hdr {
  47         PACK_STRUCT_FIELD(u16_t _type_code);
  48         PACK_STRUCT_FIELD(u16_t chksum);
  49         PACK_STRUCT_FIELD(u32_t unused);
  50 } PACK_STRUCT_STRUCT;
  51 PACK_STRUCT_END
  52
  53 struct uip_pbuf;
  54 struct uip_netif;
  55
  56
  57 void uip_icmpinput(struct uip_pbuf *p,struct uip_netif *inp);
  58 void uip_icmp_destunreach(struct uip_pbuf *p,enum uip_icmp_dur_type t);
  59
  60 #endif