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192.168.1.100 / T106_DC / 41f36abeccb9893c85d95cd4bf9ac33a90717506 / . / ap / app / pppd / include / linux / ppp_defs.h
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lh9ed821d2023-04-07 01:36:19 -0700[diff] [blame]1/* $Id: ppp_defs.h,v 1.2 2007-06-08 04:02:37 gerg Exp $ */
2
3/*
4 * ppp_defs.h - PPP definitions.
5 *
6 * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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
18 * distribution.
19 *
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.
23 *
24 * 4. Redistributions of any form whatsoever must retain the following
25 * acknowledgment:
26 * "This product includes software developed by Paul Mackerras
27 * <paulus@samba.org>".
28 *
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.
36 */
37
38/*
39 * ==FILEVERSION 20020521==
40 *
41 * NOTE TO MAINTAINERS:
42 * If you modify this file at all, please set the above date.
43 * ppp_defs.h is shipped with a PPP distribution as well as with the kernel;
44 * if everyone increases the FILEVERSION number above, then scripts
45 * can do the right thing when deciding whether to install a new ppp_defs.h
46 * file. Don't change the format of that line otherwise, so the
47 * installation script can recognize it.
48 */
49
50#ifndef _PPP_DEFS_H_
51#define _PPP_DEFS_H_
52
53/*
54 * The basic PPP frame.
55 */
56#define PPP_HDRLEN 4 /* octets for standard ppp header */
57#define PPP_FCSLEN 2 /* octets for FCS */
58#define PPP_MRU 1500 /* default MRU = max length of info field */
59
60#define PPP_ADDRESS(p) (((__u8 *)(p))[0])
61#define PPP_CONTROL(p) (((__u8 *)(p))[1])
62#define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3])
63
64/*
65 * Significant octet values.
66 */
67#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
68#define PPP_UI 0x03 /* Unnumbered Information */
69#define PPP_FLAG 0x7e /* Flag Sequence */
70#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
71#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
72
73/*
74 * Protocol field values.
75 */
76#define PPP_IP 0x21 /* Internet Protocol */
77#define PPP_AT 0x29 /* AppleTalk Protocol */
78#define PPP_IPX 0x2b /* IPX protocol */
79#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
80#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
81#define PPP_MP 0x3d /* Multilink protocol */
82#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */
83#define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */
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_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */
90#define PPP_CCP 0x80fd /* Compression Control Protocol */
91#define PPP_ECPFRAG 0x8055 /* ECP at link level (below MP bundle) */
92#define PPP_ECP 0x8053 /* Encryption Control Protocol */
93#define PPP_LCP 0xc021 /* Link Control Protocol */
94#define PPP_PAP 0xc023 /* Password Authentication Protocol */
95#define PPP_LQR 0xc025 /* Link Quality Report protocol */
96#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
97#define PPP_CBCP 0xc029 /* Callback Control Protocol */
98
99/*
100 * Values for FCS calculations.
101 */
102
103#define PPP_INITFCS 0xffff /* Initial FCS value */
104#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
105#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
106
107/*
108 * Extended asyncmap - allows any character to be escaped.
109 */
110
111typedef __u32 ext_accm[8];
112
113/*
114 * What to do with network protocol (NP) packets.
115 */
116enum NPmode {
117 NPMODE_PASS, /* pass the packet through */
118 NPMODE_DROP, /* silently drop the packet */
119 NPMODE_ERROR, /* return an error */
120 NPMODE_QUEUE /* save it up for later. */
121};
122
123/*
124 * Statistics for LQRP and pppstats
125 */
126struct pppstat {
127 __u32 ppp_discards; /* # frames discarded */
128
129 __u32 ppp_ibytes; /* bytes received */
130 __u32 ppp_ioctects; /* bytes received not in error */
131 __u32 ppp_ipackets; /* packets received */
132 __u32 ppp_ierrors; /* receive errors */
133 __u32 ppp_ilqrs; /* # LQR frames received */
134
135 __u32 ppp_obytes; /* raw bytes sent */
136 __u32 ppp_ooctects; /* frame bytes sent */
137 __u32 ppp_opackets; /* packets sent */
138 __u32 ppp_oerrors; /* transmit errors */
139 __u32 ppp_olqrs; /* # LQR frames sent */
140};
141
142struct vjstat {
143 __u32 vjs_packets; /* outbound packets */
144 __u32 vjs_compressed; /* outbound compressed packets */
145 __u32 vjs_searches; /* searches for connection state */
146 __u32 vjs_misses; /* times couldn't find conn. state */
147 __u32 vjs_uncompressedin; /* inbound uncompressed packets */
148 __u32 vjs_compressedin; /* inbound compressed packets */
149 __u32 vjs_errorin; /* inbound unknown type packets */
150 __u32 vjs_tossed; /* inbound packets tossed because of error */
151};
152
153struct compstat {
154 __u32 unc_bytes; /* total uncompressed bytes */
155 __u32 unc_packets; /* total uncompressed packets */
156 __u32 comp_bytes; /* compressed bytes */
157 __u32 comp_packets; /* compressed packets */
158 __u32 inc_bytes; /* incompressible bytes */
159 __u32 inc_packets; /* incompressible packets */
160
161 /* the compression ratio is defined as in_count / bytes_out */
162 __u32 in_count; /* Bytes received */
163 __u32 bytes_out; /* Bytes transmitted */
164
165 double ratio; /* not computed in kernel. */
166};
167
168struct ppp_stats {
169 struct pppstat p; /* basic PPP statistics */
170 struct vjstat vj; /* VJ header compression statistics */
171};
172
173struct ppp_comp_stats {
174 struct compstat c; /* packet compression statistics */
175 struct compstat d; /* packet decompression statistics */
176};
177
178/*
179 * The following structure records the time in seconds since
180 * the last NP packet was sent or received.
181 */
182struct ppp_idle {
183 time_t xmit_idle; /* time since last NP packet sent */
184 time_t recv_idle; /* time since last NP packet received */
185};
186
187#ifndef __P
188#ifdef __STDC__
189#define __P(x) x
190#else
191#define __P(x) ()
192#endif
193#endif
194
195#endif /* _PPP_DEFS_H_ */