Subversion Repositories amber

/*----------------------------------------------------------------
//                                                              //
//  boot-loader.h                                               //
//                                                              //
//  This file is part of the Amber project                      //
//  http://www.opencores.org/project,amber                      //
//                                                              //
//  Description                                                 //
//  Defines for the boot-loader application.                    //
//                                                              //
//  Author(s):                                                  //
//      - Conor Santifort, csantifort.amber@gmail.com           //
//                                                              //
//////////////////////////////////////////////////////////////////
//                                                              //
// Copyright (C) 2010 Authors and OPENCORES.ORG                 //
//                                                              //
// This source file may be used and distributed without         //
// restriction provided that this copyright statement is not    //
// removed from the file and that any derivative work contains  //
// the original copyright notice and the associated disclaimer. //
//                                                              //
// This source file is free software; you can redistribute it   //
// and/or modify it under the terms of the GNU Lesser General   //
// Public License as published by the Free Software Foundation; //
// either version 2.1 of the License, or (at your option) any   //
// later version.                                               //
//                                                              //
// This source is distributed in the hope that it will be       //
// useful, but WITHOUT ANY WARRANTY; without even the implied   //
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      //
// PURPOSE.  See the GNU Lesser General Public License for more //
// details.                                                     //
//                                                              //
// You should have received a copy of the GNU Lesser General    //
// Public License along with this source; if not, download it   //
// from http://www.opencores.org/lgpl.shtml                     //
//                                                              //
----------------------------------------------------------------*/
 
 
enum tcp_state {
	TCP_CLOSED    = 0,
	TCP_PENDING   = 1,
	TCP_OPEN      = 2
};
 
 
enum tcp_options {
        TCP_NEW         = 0,
        TCP_NORMAL      = 1,
        TCP_RESET       = 2
};
 
 
typedef struct {
 
    packet_buffer_t** tcp_buf;
    int          tcp_current_buf;
 
    /* Telnet rx and tx line buffers */
    line_buf_t*  telnet_rxbuf;
    line_buf_t*  telnet_txbuf;
 
    int          telnet_sent_opening_message;
    int          telnet_echo_mode;
    int          telnet_connection_state;
    int          telnet_options_sent;
 
    int          packets_sent;
    int          packets_received;
    int          packets_resent;
 
    int          tcp_connection_state;
    int          tcp_reset;
    int          tcp_disconnect;
    int          tcp_seq;            /* should be random initial seq number for tcp */
    int          tcp_last_seq;
    unsigned int tcp_last_ack;
 
    int          id;
 
    packet_t*    rx_packet;  /* Header info from last packet received */
 
    /* pointers to the next socket in the chain and the first socket in the chain */
    void*        next;
    void*        first;
} socket_t;
 
 
/* Global Variables */
extern socket_t*    first_socket_g;
extern int          tcp_checksum_errors_g;
 
 
/* Function prototypes */
socket_t*       new_socket              (socket_t* prev);
 
unsigned short  tcp_checksum            (unsigned char *, packet_t*, unsigned short);
unsigned int    tcp_header              (char *, socket_t*, int, int);
void            tcp_reply               (socket_t*, char*, int);
void            tcp_open                (socket_t*);
void            tcp_retransmit          (socket_t*);
void            tcp_ack                 (socket_t*);
void            tcp_response            (char*, socket_t*);
void            tcp_disconnect          (socket_t*);
void            tcp_tx                  (socket_t*, char*, int);
void            parse_tcp_options       (char*, packet_t*);
void            parse_tcp_packet        (char*, packet_t*);
void            process_tcp             (socket_t*);