1 files changed, 67 insertions, 0 deletions
diff --git a/usr.sbin/ppp/hdlc.h b/usr.sbin/ppp/hdlc.h
new file mode 100644
index 00000000000..7e2f900883e
--- /dev/null
+++ b/usr.sbin/ppp/hdlc.h
@@ -0,0 +1,67 @@
+/*
+ *	    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: hdlc.h,v 1.1 1997/11/23 20:27:33 brian Exp $
+ *
+ *	TODO:
+ */
+
+/*
+ *  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		2048
+#define	MIN_MRU		296
+
+#define	DEF_MTU		0	/* whatever peer says */
+#define	MAX_MTU		2048
+#define	MIN_MTU		296
+
+/*
+ *  Output priority
+ */
+/* PRI_NORMAL and PRI_FAST have meaning only on the IP queue.
+ * All IP frames have the same priority once they are compressed.
+ * IP frames stay on the IP queue till they can be sent on the
+ * link. They are compressed at that time.
+*/
+#define	PRI_NORMAL	0	/* Normal priority */
+#define	PRI_FAST	1	/* Fast (interractive) */
+#define	PRI_LINK	1	/* Urgent (LQR packets) */
+
+extern u_char EscMap[33];
+
+extern void HdlcInit(void);
+extern void HdlcErrorCheck(void);
+extern void HdlcInput(struct mbuf *);
+extern void HdlcOutput(int, u_short, struct mbuf *bp);
+extern u_short HdlcFcs(u_short, u_char *, int);
+extern void DecodePacket(u_short, struct mbuf *);
+extern int ReportHdlcStatus(struct cmdargs const *);
+extern int ReportProtStatus(struct cmdargs const *);