Subversion Repositories 1g_ethernet_dpi

#ifndef _ETHER_H_

#define _ETHER_H_

#ifdef __cplusplus

extern "C"

{

#endif// __cplusplus

// net-order macros

#define lswap(x) ((((x) & 0xff000000) >> 24) | \

                  (((x) & 0x00ff0000) >>  8) | \

                  (((x) & 0x0000ff00) <<  8) | \

                  (((x) & 0x000000ff) << 24))

#define htonl(l) (lswap(l))

#define ntohl(l) (lswap(l))

#define htons(s) ((((s) >> 8) & 0xff) | \

                  (((s) << 8) & 0xff00))

#define ntohs(s) htons(s)

// prep IP-addr for PRINT

#define  PUSH_IPADDR(ip)\

   (unsigned)(ip&0xff),\

   (unsigned)((ip>>8)&0xff),\

   (unsigned)((ip>>16)&0xff),\

   (unsigned)(ip>>24)

// 

#define ETH_PKT_MAC_ADDR_LEN    (6)

#define ETH_PKT_IP_ADDR_LEN     (4)

#define ETH_HDR_LEN             (ETH_PKT_MAC_ADDR_LEN + ETH_PKT_MAC_ADDR_LEN + 2) // ..+ pkt_type

#define ETH_IPv4_HDR_LEN        (20) // -> 20 Bytes

// TU-val

#define ETH_MIN_TU              (60)

#define ETH_MAX_TU              (1500) // Eth MTU

// ETH#

#define ETH_PKT_ARP             ntohs(0x0806)

#define ETH_PKT_IPv4            ntohs(0x0800)

#define ETH_PKT_IPv6            ntohs(0x86dd)

// IPv4#

#define IPv4_ICMP               0x01

#define IPv4_IGMP               0x02

#define IPv4_TCP                0x06

#define IPv4_UDP                0x11

#define IPv4_RDP                0x1B

#define IPv4_IRTP               0x1C

#define IPv4_IPv6Encaps         0x29

#define IPv4_IPv6Route          0x2B

#define IPv4_IPv6Frag           0x2C

#define IPv4_VISA               0x46

#define IPv4_QNX                0x6A

#define IPv4_SMP                0x79

#define IPv4_SCTP               0x84

#define IPv4_UDPLite            0x88

// 

typedef unsigned short u16;

typedef unsigned int ip_addr;

// 

typedef struct {

   char    ip_ver_ihl;    // 4 bit version, 4 bit hdr len in 32bit words 

   char    ip_tos;        // Type of Service,  RFC 2474 -> {DSCP[5:0], ECN[1:0]} 

   u16     ip_len;        // Total packet length including header 

   u16     ip_id;         // ID for fragmentation 

   u16     ip_flgs_foff;  // mask in flags as needed 

   unsigned char    ip_time;       // Time to live (secs) 

   char    ip_prot;       // protocol 

   u16     ip_chksum;     // Header checksum 

   ip_addr ip_src;        // Source Addr 

   ip_addr ip_dest;       // Destination Addr 

} ip_hdr_t;

// 

typedef struct

{

   u16  ud_srcp;    /* source port */

   u16  ud_dstp;    /* dest port */

   u16  ud_len;     /* length of UDP packet */

   u16  ud_cksum;   /* UDP checksum */

} udp_hdr_t;

// tx

void ether_tx(char *ibuff, int ilen);

// rx

int ether_rx_ok(void);

void ether_rx(char *obuff, int *olen);

#ifdef __cplusplus

}

#endif// __cplusplus

#endif // _ETHER_H_