From 7d1afb88465296310cad5b77582ab304ca2811c7 Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@samba.org>
Date: Mon, 19 Sep 1994 04:18:43 +0000
Subject: [PATCH] Initial revision

---
 include/net/ppp_defs.h | 139 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 include/net/ppp_defs.h

diff --git a/include/net/ppp_defs.h b/include/net/ppp_defs.h
new file mode 100644
index 0000000..9a0a2a1
--- /dev/null
+++ b/include/net/ppp_defs.h
@@ -0,0 +1,139 @@
+/*	$Id: ppp_defs.h,v 1.1 1994/09/19 04:18:43 paulus Exp $	*/
+
+/*
+ * ppp_defs.h - PPP definitions.
+ *
+ * Copyright (c) 1994 The Australian National University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, provided that the above copyright
+ * notice appears in all copies.  This software is provided without any
+ * warranty, express or implied. The Australian National University
+ * makes no representations about the suitability of this software for
+ * any purpose.
+ *
+ * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
+ * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
+ * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
+ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
+ * OR MODIFICATIONS.
+ */
+
+/*
+ * The basic PPP frame.
+ */
+#define PPP_HDRLEN	4	/* octets for standard ppp header */
+#define PPP_FCSLEN	2	/* octets for FCS */
+#define PPP_MRU		1500	/* default MRU = max length of info field */
+
+#define PPP_ADDRESS(p)	(((u_char *)(p))[0])
+#define PPP_CONTROL(p)	(((u_char *)(p))[1])
+#define PPP_PROTOCOL(p)	((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
+
+/*
+ * Significant octet values.
+ */
+#define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */
+#define	PPP_UI		0x03	/* Unnumbered Information */
+#define	PPP_FLAG	0x7e	/* Flag Sequence */
+#define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */
+#define	PPP_TRANS	0x20	/* Asynchronous transparency modifier */
+
+/*
+ * Protocol field values.
+ */
+#define PPP_IP		0x21	/* Internet Protocol */
+#define	PPP_VJC_COMP	0x2d	/* VJ compressed TCP */
+#define	PPP_VJC_UNCOMP	0x2f	/* VJ uncompressed TCP */
+#define PPP_COMP	0xfd	/* compressed packet */
+#define PPP_LCP		0xc021	/* Link Control Protocol */
+#define PPP_CCP		0x80fd	/* Compression Control Protocol */
+
+/*
+ * Values for FCS calculations.
+ */
+#define PPP_INITFCS	0xffff	/* Initial FCS value */
+#define PPP_GOODFCS	0xf0b8	/* Good final FCS value */
+#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
+
+/*
+ * A 32-bit unsigned integral type.
+ */
+#ifndef __BIT_TYPES_DEFINED__
+#ifdef	UINT32_T
+typedef UINT32_T	u_int32_t;
+#else
+typedef unsigned long	u_int32_t;
+#endif
+#endif
+
+/*
+ * Extended asyncmap - allows any character to be escaped.
+ */
+typedef u_int32_t	ext_accm[8];
+
+/*
+ * What to do with network protocol (NP) packets.
+ */
+enum NPmode {
+    NPMODE_PASS,		/* pass the packet through */
+    NPMODE_DROP,		/* silently drop the packet */
+    NPMODE_ERROR,		/* return an error */
+    NPMODE_QUEUE		/* save it up for later. */
+};
+
+/*
+ * Statistics.
+ */
+struct pppstat	{
+    u_int	ppp_ibytes;	/* bytes received */
+    u_int	ppp_ipackets;	/* packets received */
+    u_int	ppp_ierrors;	/* receive errors */
+    u_int	ppp_obytes;	/* bytes sent */
+    u_int	ppp_opackets;	/* packets sent */
+    u_int	ppp_oerrors;	/* transmit errors */
+};
+
+struct vjstat {
+    u_int	vjs_packets;	/* outbound packets */
+    u_int	vjs_compressed;	/* outbound compressed packets */
+    u_int	vjs_searches;	/* searches for connection state */
+    u_int	vjs_misses;	/* times couldn't find conn. state */
+    u_int	vjs_uncompressedin; /* inbound uncompressed packets */
+    u_int	vjs_compressedin;   /* inbound compressed packets */
+    u_int	vjs_errorin;	/* inbound unknown type packets */
+    u_int	vjs_tossed;	/* inbound packets tossed because of error */
+};
+
+struct compstat {
+    u_int	unc_bytes;	/* total uncompressed bytes */
+    u_int	unc_packets;	/* total uncompressed packets */
+    u_int	comp_bytes;	/* compressed bytes */
+    u_int	comp_packets;	/* compressed packets */
+    u_int	inc_bytes;	/* incompressible bytes */
+    u_int	inc_packets;	/* incompressible packets */
+    double	ratio;		/* recent compression ratio */
+};
+
+struct ppp_stats {
+    struct pppstat	p;	/* basic PPP statistics */
+    struct vjstat	vj;	/* VJ header compression statistics */
+    struct compstat	c;	/* packet compression statistics */
+    struct compstat	d;	/* packet decompression statistics */
+};
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)	x
+#else
+#define __P(x)	()
+#endif
+#endif
-- 
2.39.2