1 /* $Id: ppp_defs.h,v 1.1 1994/09/19 04:18:43 paulus Exp $ */
4 * ppp_defs.h - PPP definitions.
6 * Copyright (c) 1994 The Australian National University.
9 * Permission to use, copy, modify, and distribute this software and its
10 * documentation is hereby granted, provided that the above copyright
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13 * makes no representations about the suitability of this software for
16 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
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18 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
19 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
22 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
23 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
24 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
25 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
26 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
31 * The basic PPP frame.
33 #define PPP_HDRLEN 4 /* octets for standard ppp header */
34 #define PPP_FCSLEN 2 /* octets for FCS */
35 #define PPP_MRU 1500 /* default MRU = max length of info field */
37 #define PPP_ADDRESS(p) (((u_char *)(p))[0])
38 #define PPP_CONTROL(p) (((u_char *)(p))[1])
39 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
42 * Significant octet values.
44 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
45 #define PPP_UI 0x03 /* Unnumbered Information */
46 #define PPP_FLAG 0x7e /* Flag Sequence */
47 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
48 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
51 * Protocol field values.
53 #define PPP_IP 0x21 /* Internet Protocol */
54 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
55 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
56 #define PPP_COMP 0xfd /* compressed packet */
57 #define PPP_LCP 0xc021 /* Link Control Protocol */
58 #define PPP_CCP 0x80fd /* Compression Control Protocol */
61 * Values for FCS calculations.
63 #define PPP_INITFCS 0xffff /* Initial FCS value */
64 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
65 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
68 * A 32-bit unsigned integral type.
70 #ifndef __BIT_TYPES_DEFINED__
72 typedef UINT32_T u_int32_t;
74 typedef unsigned long u_int32_t;
79 * Extended asyncmap - allows any character to be escaped.
81 typedef u_int32_t ext_accm[8];
84 * What to do with network protocol (NP) packets.
87 NPMODE_PASS, /* pass the packet through */
88 NPMODE_DROP, /* silently drop the packet */
89 NPMODE_ERROR, /* return an error */
90 NPMODE_QUEUE /* save it up for later. */
97 u_int ppp_ibytes; /* bytes received */
98 u_int ppp_ipackets; /* packets received */
99 u_int ppp_ierrors; /* receive errors */
100 u_int ppp_obytes; /* bytes sent */
101 u_int ppp_opackets; /* packets sent */
102 u_int ppp_oerrors; /* transmit errors */
106 u_int vjs_packets; /* outbound packets */
107 u_int vjs_compressed; /* outbound compressed packets */
108 u_int vjs_searches; /* searches for connection state */
109 u_int vjs_misses; /* times couldn't find conn. state */
110 u_int vjs_uncompressedin; /* inbound uncompressed packets */
111 u_int vjs_compressedin; /* inbound compressed packets */
112 u_int vjs_errorin; /* inbound unknown type packets */
113 u_int vjs_tossed; /* inbound packets tossed because of error */
117 u_int unc_bytes; /* total uncompressed bytes */
118 u_int unc_packets; /* total uncompressed packets */
119 u_int comp_bytes; /* compressed bytes */
120 u_int comp_packets; /* compressed packets */
121 u_int inc_bytes; /* incompressible bytes */
122 u_int inc_packets; /* incompressible packets */
123 double ratio; /* recent compression ratio */
127 struct pppstat p; /* basic PPP statistics */
128 struct vjstat vj; /* VJ header compression statistics */
129 struct compstat c; /* packet compression statistics */
130 struct compstat d; /* packet decompression statistics */