Subversion Repositories 1g_ethernet_dpi

#ifndef _ETH_H_

#define _ETH_H_

#ifdef __cplusplus

extern "C"

{

#endif// __cplusplus

#include "xil_types.h"

// ??

#define _packed_struct  __attribute__ ((__packed__))

// eth hdr

struct ethhdr_ {

    u8   e_dst[6]; // ETH_DST_OFST

    u8   e_src[6]; // ETH_SRC_OFST

    u16  e_type;              // ETH_TYPE_OFST

} _packed_struct;

typedef struct ethhdr_ ethhdr_t;

// define Ethernet header size

#define ETH_HDR_SZ (sizeof(ethhdr_t))

// Offset of destination address within Ethernet header

#define ETH_DST_OFST      (0)

// Offset of source address within Ethernet header

#define ETH_SRC_OFST      (6)

// Offset of Ethernet type within Ethernet header

#define ETH_TYPE_OFST     (12)

/* Get Ethernet type from Ethernet header pointed by char * e

 * !!!returned Ethernet type is in host order!!!

 */

#define ETH_TYPE_GET(e)  \

        (((unsigned)(*((e) + ETH_TYPE_OFST)) << 8) + \

         (*((e) + ETH_TYPE_OFST + 1) & 0xff))

/* Set Ethernet type in Ethernet header pointed by char * e to value (type)

 * !!!Ethernet type is value is expected to be in host order!!!

 */

#define ETH_TYPE_SET(e, type) \

        *((e) + ETH_TYPE_OFST) = (unsigned char)(((type) >> 8) & 0xff); \

        *((e) + ETH_TYPE_OFST + 1) = (unsigned char)((type) & 0xff);

// rfc1071 internet checksum

unsigned short cksum(void * ptr, int count);

#ifdef __cplusplus

}

#endif// __cplusplus

#endif   // _ETH_H_