FreeRTOS/Common/ethernet/lwIP_130/contrib/port/FreeRTOS/ColdFire/eth.h

   1 /*!
   2  * \file    eth.h
   3  * \brief   Definitinos for Ethernet Frames
   4  * \version $Revision: 1.2 $
   5  * \author  Michael Norman
   6  */
   7
   8 #ifndef _ETH_H
   9 #define _ETH_H
  10
  11 /*******************************************************************/
  12
  13 /* Ethernet standard lengths in bytes*/
  14 #define ETH_ADDR_LEN    (6)
  15 #define ETH_TYPE_LEN    (2)
  16 #define ETH_CRC_LEN     (4)
  17 #define ETH_MAX_DATA    (1500)
  18 #define ETH_MIN_DATA    (46)
  19 #define ETH_HDR_LEN     (ETH_ADDR_LEN * 2 + ETH_TYPE_LEN)
  20
  21 /* Defined Ethernet Frame Types */
  22 #define ETH_FRM_IP      (0x0800)
  23 #define ETH_FRM_ARP     (0x0806)
  24 #define ETH_FRM_RARP    (0x8035)
  25 #define ETH_FRM_TEST    (0xA5A5)
  26
  27 /* Maximum and Minimum Ethernet Frame Sizes */
  28 #define ETH_MAX_FRM     (ETH_HDR_LEN + ETH_MAX_DATA + ETH_CRC_LEN)
  29 #define ETH_MIN_FRM     (ETH_HDR_LEN + ETH_MIN_DATA + ETH_CRC_LEN)
  30 #define ETH_MTU         (ETH_HDR_LEN + ETH_MAX_DATA)
  31
  32 /* Ethernet Addresses */
  33 typedef uint8 ETH_ADDR[ETH_ADDR_LEN];
  34
  35 /* 16-bit Ethernet Frame Type, ie. Protocol */
  36 typedef uint16 ETH_FRM_TYPE;
  37
  38 /* Ethernet Frame Header definition */
  39 typedef struct
  40 {
  41     ETH_ADDR     dest;
  42     ETH_ADDR     src;
  43     ETH_FRM_TYPE type;
  44 } ETH_HDR;
  45
  46 /* Ethernet Frame definition */
  47 typedef struct
  48 {
  49     ETH_HDR head;
  50     uint8*  data;
  51 } ETH_FRAME;
  52
  53 /*******************************************************************/
  54
  55 #endif  /* _ETH_H */