Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /**************************************************************************** |
| 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 | |
| 40 | |
| 41 | #ifdef SCCS_LABELS |
| 42 | #ifndef lint |
| 43 | /* static char *_rio_pkt_h_sccs = "@(#)pkt.h 1.8"; */ |
| 44 | #endif |
| 45 | #endif |
| 46 | |
| 47 | #define MAX_TTL 0xf |
| 48 | #define PKT_CMD_BIT ((ushort) 0x080) |
| 49 | #define PKT_CMD_DATA ((ushort) 0x080) |
| 50 | |
| 51 | #define PKT_ACK ((ushort) 0x040) |
| 52 | |
| 53 | #define PKT_TGL ((ushort) 0x020) |
| 54 | |
| 55 | #define PKT_LEN_MASK ((ushort) 0x07f) |
| 56 | |
| 57 | #define DATA_WNDW ((ushort) 0x10) |
| 58 | #define PKT_TTL_MASK ((ushort) 0x0f) |
| 59 | |
| 60 | #define PKT_MAX_DATA_LEN 72 |
| 61 | |
| 62 | #define PKT_LENGTH sizeof(struct PKT) |
| 63 | #define SYNC_PKT_LENGTH (PKT_LENGTH + 4) |
| 64 | |
| 65 | #define CONTROL_PKT_LEN_MASK PKT_LEN_MASK |
| 66 | #define CONTROL_PKT_CMD_BIT PKT_CMD_BIT |
| 67 | #define CONTROL_PKT_ACK (PKT_ACK << 8) |
| 68 | #define CONTROL_PKT_TGL (PKT_TGL << 8) |
| 69 | #define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8) |
| 70 | #define CONTROL_DATA_WNDW (DATA_WNDW << 8) |
| 71 | |
| 72 | struct PKT { |
| 73 | #ifdef INKERNEL |
| 74 | BYTE dest_unit ; /* Destination Unit Id */ |
| 75 | BYTE dest_port ; /* Destination POrt */ |
| 76 | BYTE src_unit ; /* Source Unit Id */ |
| 77 | BYTE src_port ; /* Source POrt */ |
| 78 | #else |
| 79 | union |
| 80 | { |
| 81 | ushort destination; /* Complete destination */ |
| 82 | struct |
| 83 | { |
| 84 | unsigned char unit; /* Destination unit */ |
| 85 | unsigned char port; /* Destination port */ |
| 86 | } s1; |
| 87 | } u1; |
| 88 | union |
| 89 | { |
| 90 | ushort source; /* Complete source */ |
| 91 | struct |
| 92 | { |
| 93 | unsigned char unit; /* Source unit */ |
| 94 | unsigned char port; /* Source port */ |
| 95 | } s2; |
| 96 | } u2; |
| 97 | #endif |
| 98 | #ifdef INKERNEL |
| 99 | BYTE len ; |
| 100 | BYTE control; |
| 101 | #else |
| 102 | union |
| 103 | { |
| 104 | ushort control; |
| 105 | struct |
| 106 | { |
| 107 | unsigned char len; |
| 108 | unsigned char control; |
| 109 | } s3; |
| 110 | } u3; |
| 111 | #endif |
| 112 | BYTE data[PKT_MAX_DATA_LEN] ; |
| 113 | /* Actual data :-) */ |
| 114 | WORD csum ; /* C-SUM */ |
| 115 | } ; |
| 116 | #endif |
| 117 | |
| 118 | /*********** end of file ***********/ |
| 119 | |
| 120 | |