| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: crc.h |
| 4 | * Version: |
| 5 | * Description: CRC routines |
| 6 | * Status: Experimental. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Mon Aug 4 20:40:53 1997 |
| 9 | * Modified at: Sun May 2 20:25:23 1999 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
| 11 | * |
| 12 | ********************************************************************/ |
| 13 | |
| 14 | #ifndef IRDA_CRC_H |
| 15 | #define IRDA_CRC_H |
| 16 | |
| 17 | #include <linux/types.h> |
| 18 | #include <linux/crc-ccitt.h> |
| 19 | |
| 20 | #define INIT_FCS 0xffff /* Initial FCS value */ |
| 21 | #define GOOD_FCS 0xf0b8 /* Good final FCS value */ |
| 22 | |
| 23 | /* Recompute the FCS with one more character appended. */ |
| 24 | #define irda_fcs(fcs, c) crc_ccitt_byte(fcs, c) |
| 25 | |
| 26 | /* Recompute the FCS with len bytes appended. */ |
| 27 | #define irda_calc_crc16(fcs, buf, len) crc_ccitt(fcs, buf, len) |
| 28 | |
| 29 | #endif |