78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/****************************************************************************
|
|
******* *******
|
|
******* P A C K E T H E A D E R F I L E
|
|
******* *******
|
|
****************************************************************************
|
|
|
|
Author : Ian Nandhra / Jeremy Rolls
|
|
Date :
|
|
|
|
*
|
|
* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
Version : 0.01
|
|
|
|
|
|
Mods
|
|
----------------------------------------------------------------------------
|
|
Date By Description
|
|
----------------------------------------------------------------------------
|
|
|
|
***************************************************************************/
|
|
|
|
#ifndef _pkt_h
|
|
#define _pkt_h 1
|
|
|
|
#define PKT_CMD_BIT ((ushort) 0x080)
|
|
#define PKT_CMD_DATA ((ushort) 0x080)
|
|
|
|
#define PKT_ACK ((ushort) 0x040)
|
|
|
|
#define PKT_TGL ((ushort) 0x020)
|
|
|
|
#define PKT_LEN_MASK ((ushort) 0x07f)
|
|
|
|
#define DATA_WNDW ((ushort) 0x10)
|
|
#define PKT_TTL_MASK ((ushort) 0x0f)
|
|
|
|
#define PKT_MAX_DATA_LEN 72
|
|
|
|
#define PKT_LENGTH sizeof(struct PKT)
|
|
#define SYNC_PKT_LENGTH (PKT_LENGTH + 4)
|
|
|
|
#define CONTROL_PKT_LEN_MASK PKT_LEN_MASK
|
|
#define CONTROL_PKT_CMD_BIT PKT_CMD_BIT
|
|
#define CONTROL_PKT_ACK (PKT_ACK << 8)
|
|
#define CONTROL_PKT_TGL (PKT_TGL << 8)
|
|
#define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8)
|
|
#define CONTROL_DATA_WNDW (DATA_WNDW << 8)
|
|
|
|
struct PKT {
|
|
u8 dest_unit; /* Destination Unit Id */
|
|
u8 dest_port; /* Destination POrt */
|
|
u8 src_unit; /* Source Unit Id */
|
|
u8 src_port; /* Source POrt */
|
|
u8 len;
|
|
u8 control;
|
|
u8 data[PKT_MAX_DATA_LEN];
|
|
/* Actual data :-) */
|
|
u16 csum; /* C-SUM */
|
|
};
|
|
#endif
|
|
|
|
/*********** end of file ***********/
|