#ifndef IPX_H
#define IPX_H

typedef struct spx_frame spx_frame_t;
struct spx_frame {
  uint16_t checksum;
  uint16_t length;
  uint8_t  hops;
  uint8_t  type;

  uint32_t dest_net;
  uint16_t dest_node[3];
  uint16_t dest_socket;

  uint32_t src_net;
  uint16_t src_node[3];
  uint16_t src_socket;

  uint8_t conn_control;
  uint8_t datastream_type;
  uint16_t src_conn_id;
  uint16_t dest_conn_id;
  uint16_t seq_no;
  uint16_t ack_no;
  uint16_t alloc_no;

  unsigned char data[0];
}__attribute__((__packed__, aligned(1)));

typedef struct spx_header spx_header_t;
struct spx_header {
  uint8_t conn_control;
  uint8_t datastream_type;
  uint16_t src_conn_id;
  uint16_t dest_conn_id;
  uint16_t seq_no;
  uint16_t ack_no;
  uint16_t alloc_no;
}__attribute__((__packed__, aligned(1)));

typedef struct ipx_frame ipx_frame_t;
struct ipx_frame {
  uint16_t checksum;
  uint16_t length;
  uint8_t  hops;
  uint8_t  type;

  uint32_t dest_net;
  uint16_t dest_node[3];
  uint16_t dest_socket;

  uint32_t src_net;
  uint16_t src_node[3];
  uint16_t src_socket;

  unsigned char data[0];
} __attribute__((__packed__, aligned(1)));

typedef struct ethernet_frame ethernet_frame_t;
struct ethernet_frame
{
  uint16_t dest_mac[3];
  uint16_t src_mac[3];
  uint16_t ethertype;
  
  ipx_frame_t ipxpacket;
} __attribute__((__packed__, aligned(1)));

typedef struct ethernet_spx_frame ethernet_spx_frame_t;
struct ethernet_spx_frame
{
  uint16_t dest_mac[3];
  uint16_t src_mac[3];
  uint16_t ethertype;
  
  spx_frame_t spxpacket;
} __attribute__((__packed__, aligned(1)));


typedef struct IEEE8023_frame IEEE8023_frame_t;
struct IEEE8023_frame
{
  uint16_t dest_mac[3];
  uint16_t src_mac[3];
  uint16_t length;
  uint8_t DSAP;
  uint8_t SSAP;
  uint8_t ctrl;
  
  ipx_frame_t ipxpacket;
} __attribute__((__packed__, aligned(1)));

/* Packet types */

#define PACKET_UNKNOWN 0
#define PACKET_RIP     1
#define PACKET_ECHO    2
#define PACKET_ERROR   3
#define PACKET_IPX     4 // also SAP Packet
#define PACKET_SPX     5
#define PACKET_NCP     17
#define PACKET_NETBIOS 20

#endif /* IPX_H */