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Diffstat (limited to 'usr.sbin/ppp/hdlc.h')
-rw-r--r-- | usr.sbin/ppp/hdlc.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/usr.sbin/ppp/hdlc.h b/usr.sbin/ppp/hdlc.h new file mode 100644 index 0000000..3c03655 --- /dev/null +++ b/usr.sbin/ppp/hdlc.h @@ -0,0 +1,58 @@ +/* + * Written by Toshiharu OHNO (tony-o@iij.ad.jp) + * + * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the Internet Initiative Japan. The name of the + * IIJ may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * $Id:$ + * + * TODO: + */ + +#ifndef _HDLC_H_ +#define _HDLC_H_ + +/* + * Definition for Async HDLC + */ +#define HDLC_SYN 0x7e /* SYNC character */ +#define HDLC_ESC 0x7d /* Escape character */ +#define HDLC_XOR 0x20 /* Modifier value */ + +#define HDLC_ADDR 0xff +#define HDLC_UI 0x03 +/* + * Definition for HDLC Frame Check Sequence + */ +#define INITFCS 0xffff /* Initial value for FCS computation */ +#define GOODFCS 0xf0b8 /* Good FCS value */ + +#define DEF_MRU 1500 +#define MAX_MRU 2000 +#define MIN_MRU 296 + +/* + * Output priority + */ +#define PRI_NORMAL 0 /* Normal priority */ +#define PRI_FAST 1 /* Fast (interructive) */ +#define PRI_URGENT 2 /* Urgent (LQR packets) */ + +unsigned char EscMap[33]; + +void HdlcInput(struct mbuf *bp); +void HdlcOutput(int pri, u_short proto, struct mbuf *bp); +void AsyncOutput(int pri, struct mbuf *bp, int proto); + +#endif |