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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/****************************************************************************
2 ******* *******
3 ******* P A C K E T H E A D E R F I L E
4 ******* *******
5 ****************************************************************************
6
7 Author : Ian Nandhra / Jeremy Rolls
8 Date :
9
10 *
11 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27 Version : 0.01
28
29
30 Mods
31 ----------------------------------------------------------------------------
32 Date By Description
33 ----------------------------------------------------------------------------
34
35 ***************************************************************************/
36
37#ifndef _pkt_h
38#define _pkt_h 1
39
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#define PKT_CMD_BIT ((ushort) 0x080)
41#define PKT_CMD_DATA ((ushort) 0x080)
42
43#define PKT_ACK ((ushort) 0x040)
44
45#define PKT_TGL ((ushort) 0x020)
46
47#define PKT_LEN_MASK ((ushort) 0x07f)
48
49#define DATA_WNDW ((ushort) 0x10)
50#define PKT_TTL_MASK ((ushort) 0x0f)
51
52#define PKT_MAX_DATA_LEN 72
53
54#define PKT_LENGTH sizeof(struct PKT)
55#define SYNC_PKT_LENGTH (PKT_LENGTH + 4)
56
57#define CONTROL_PKT_LEN_MASK PKT_LEN_MASK
58#define CONTROL_PKT_CMD_BIT PKT_CMD_BIT
59#define CONTROL_PKT_ACK (PKT_ACK << 8)
60#define CONTROL_PKT_TGL (PKT_TGL << 8)
61#define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8)
62#define CONTROL_DATA_WNDW (DATA_WNDW << 8)
63
Andrew Morton8d8706e2006-01-11 12:17:49 -080064struct PKT {
Alan Cox74769ab2006-03-24 03:18:24 -080065 u8 dest_unit; /* Destination Unit Id */
66 u8 dest_port; /* Destination POrt */
67 u8 src_unit; /* Source Unit Id */
68 u8 src_port; /* Source POrt */
69 u8 len;
70 u8 control;
71 u8 data[PKT_MAX_DATA_LEN];
Andrew Morton8d8706e2006-01-11 12:17:49 -080072 /* Actual data :-) */
Alan Cox74769ab2006-03-24 03:18:24 -080073 u16 csum; /* C-SUM */
Andrew Morton8d8706e2006-01-11 12:17:49 -080074};
Linus Torvalds1da177e2005-04-16 15:20:36 -070075#endif
76
77/*********** end of file ***********/