1 /* $Id: ppp_defs.h,v 1.17 2002/12/06 09:49:15 paulus Exp $ */
4 * ppp_defs.h - PPP definitions.
6 * Copyright (c) 1984 Paul Mackerras. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. The name(s) of the authors of this software must not be used to
21 * endorse or promote products derived from this software without
22 * prior written permission.
24 * 4. Redistributions of any form whatsoever must retain the following
26 * "This product includes software developed by Paul Mackerras
27 * <paulus@samba.org>".
29 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
30 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
31 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
32 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
33 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
34 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
35 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
42 * The basic PPP frame.
44 #define PPP_HDRLEN 4 /* octets for standard ppp header */
45 #define PPP_FCSLEN 2 /* octets for FCS */
50 * Note - lcp shouldn't be allowed to negotiate stuff outside these
51 * limits. See lcp.h in the pppd directory.
52 * (XXX - these constants should simply be shared by lcp.c instead
55 #define PPP_MTU 1500 /* Default MTU (size of Info field) */
56 #define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)
58 #define PPP_MRU 1500 /* default MRU = max length of info field */
59 #define PPP_MAXMRU 65000 /* Largest MRU we allow */
60 #define PPP_MINMRU 128
62 #define PPP_ADDRESS(p) (((u_char *)(p))[0])
63 #define PPP_CONTROL(p) (((u_char *)(p))[1])
64 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
67 * Significant octet values.
69 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
70 #define PPP_UI 0x03 /* Unnumbered Information */
71 #define PPP_FLAG 0x7e /* Flag Sequence */
72 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
73 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
76 * Protocol field values.
78 #define PPP_IP 0x21 /* Internet Protocol */
79 #define PPP_AT 0x29 /* AppleTalk Protocol */
80 #define PPP_IPX 0x2b /* IPX protocol */
81 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
82 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
83 #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */
84 #define PPP_COMP 0xfd /* compressed packet */
85 #define PPP_IPCP 0x8021 /* IP Control Protocol */
86 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
87 #define PPP_IPXCP 0x802b /* IPX Control Protocol */
88 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
89 #define PPP_CCP 0x80fd /* Compression Control Protocol */
90 #define PPP_ECP 0x8053 /* Encryption Control Protocol */
91 #define PPP_LCP 0xc021 /* Link Control Protocol */
92 #define PPP_PAP 0xc023 /* Password Authentication Protocol */
93 #define PPP_LQR 0xc025 /* Link Quality Report protocol */
94 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
95 #define PPP_CBCP 0xc029 /* Callback Control Protocol */
96 #define PPP_EAP 0xc227 /* Extensible Authentication Protocol */
99 * Values for FCS calculations.
101 #define PPP_INITFCS 0xffff /* Initial FCS value */
102 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
103 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
106 * A 32-bit unsigned integral type.
109 #if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) \
110 && !defined(__FreeBSD__) && (NS_TARGET < 40)
112 typedef UINT32_T u_int32_t;
114 typedef unsigned int u_int32_t;
115 typedef unsigned short u_int16_t;
120 * Extended asyncmap - allows any character to be escaped.
122 typedef u_int32_t ext_accm[8];
125 * What to do with network protocol (NP) packets.
128 NPMODE_PASS, /* pass the packet through */
129 NPMODE_DROP, /* silently drop the packet */
130 NPMODE_ERROR, /* return an error */
131 NPMODE_QUEUE /* save it up for later. */
138 unsigned int ppp_ibytes; /* bytes received */
139 unsigned int ppp_ipackets; /* packets received */
140 unsigned int ppp_ierrors; /* receive errors */
141 unsigned int ppp_obytes; /* bytes sent */
142 unsigned int ppp_opackets; /* packets sent */
143 unsigned int ppp_oerrors; /* transmit errors */
147 unsigned int vjs_packets; /* outbound packets */
148 unsigned int vjs_compressed; /* outbound compressed packets */
149 unsigned int vjs_searches; /* searches for connection state */
150 unsigned int vjs_misses; /* times couldn't find conn. state */
151 unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
152 unsigned int vjs_compressedin; /* inbound compressed packets */
153 unsigned int vjs_errorin; /* inbound unknown type packets */
154 unsigned int vjs_tossed; /* inbound packets tossed because of error */
158 struct pppstat p; /* basic PPP statistics */
159 struct vjstat vj; /* VJ header compression statistics */
163 unsigned int unc_bytes; /* total uncompressed bytes */
164 unsigned int unc_packets; /* total uncompressed packets */
165 unsigned int comp_bytes; /* compressed bytes */
166 unsigned int comp_packets; /* compressed packets */
167 unsigned int inc_bytes; /* incompressible bytes */
168 unsigned int inc_packets; /* incompressible packets */
169 unsigned int ratio; /* recent compression ratio << 8 */
172 struct ppp_comp_stats {
173 struct compstat c; /* packet compression statistics */
174 struct compstat d; /* packet decompression statistics */
178 * The following structure records the time in seconds since
179 * the last NP packet was sent or received.
182 time_t xmit_idle; /* time since last NP packet sent */
183 time_t recv_idle; /* time since last NP packet received */
186 #endif /* _PPP_DEFS_H_ */