diff options
Diffstat (limited to 'include/net/irda/crc.h')
| -rw-r--r-- | include/net/irda/crc.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/net/irda/crc.h b/include/net/irda/crc.h new file mode 100644 index 000000000000..f202296df9bb --- /dev/null +++ b/include/net/irda/crc.h @@ -0,0 +1,29 @@ +/********************************************************************* + * + * Filename: crc.h + * Version: + * Description: CRC routines + * Status: Experimental. + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Mon Aug 4 20:40:53 1997 + * Modified at: Sun May 2 20:25:23 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + ********************************************************************/ + +#ifndef IRDA_CRC_H +#define IRDA_CRC_H + +#include <linux/types.h> +#include <linux/crc-ccitt.h> + +#define INIT_FCS 0xffff /* Initial FCS value */ +#define GOOD_FCS 0xf0b8 /* Good final FCS value */ + +/* Recompute the FCS with one more character appended. */ +#define irda_fcs(fcs, c) crc_ccitt_byte(fcs, c) + +/* Recompute the FCS with len bytes appended. */ +#define irda_calc_crc16(fcs, buf, len) crc_ccitt(fcs, buf, len) + +#endif |