diff options
Diffstat (limited to 'include/net/irda/crc.h')
| -rw-r--r-- | include/net/irda/crc.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/include/net/irda/crc.h b/include/net/irda/crc.h index d4ee011e4..61a5a6488 100644 --- a/include/net/irda/crc.h +++ b/include/net/irda/crc.h @@ -6,25 +6,28 @@ * Status: Experimental. * Author: Dag Brattli <dagb@cs.uit.no> * Created at: Mon Aug 4 20:40:53 1997 - * Modified at: Tue Dec 15 22:18:53 1998 + * Modified at: Sun May 2 20:25:23 1999 * Modified by: Dag Brattli <dagb@cs.uit.no> * ********************************************************************/ -#ifndef IR_CRC_H -#define IR_CRC_H +#ifndef IRDA_CRC_H +#define IRDA_CRC_H #include <linux/types.h> #define INIT_FCS 0xffff /* Initial FCS value */ #define GOOD_FCS 0xf0b8 /* Good final FCS value */ +extern __u16 const irda_crc16_table[]; + /* Recompute the FCS with one more character appended. */ -#define IR_FCS(fcs, c) (((fcs) >> 8) ^ irda_crc16_table[((fcs) ^ (c)) & 0xff]) +static inline __u16 irda_fcs(__u16 fcs, __u8 c) +{ + return (((fcs) >> 8) ^ irda_crc16_table[((fcs) ^ (c)) & 0xff]); +} /* Recompute the FCS with len bytes appended. */ unsigned short crc_calc( __u16 fcs, __u8 const *buf, size_t len); -extern __u16 const irda_crc16_table[]; - #endif |