source: svn/trunk/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/linux/ppp_defs.h

Last change on this file was 2, checked in by jglee, 11 years ago

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1
2/*
3 * ppp_defs.h - PPP definitions.
4 *
5 * Copyright (c) 1994 The Australian National University.
6 * All rights reserved.
7 *
8 * Permission to use, copy, modify, and distribute this software and its
9 * documentation is hereby granted, provided that the above copyright
10 * notice appears in all copies.  This software is provided without any
11 * warranty, express or implied. The Australian National University
12 * makes no representations about the suitability of this software for
13 * any purpose.
14 *
15 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
16 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
17 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
18 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
19 * OF SUCH DAMAGE.
20 *
21 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
23 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
24 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
25 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
26 * OR MODIFICATIONS.
27 */
28
29/*
30 *  ==FILEVERSION 20000114==
31 *
32 *  NOTE TO MAINTAINERS:
33 *     If you modify this file at all, please set the above date.
34 *     ppp_defs.h is shipped with a PPP distribution as well as with the kernel;
35 *     if everyone increases the FILEVERSION number above, then scripts
36 *     can do the right thing when deciding whether to install a new ppp_defs.h
37 *     file.  Don't change the format of that line otherwise, so the
38 *     installation script can recognize it.
39 */
40
41#ifndef _PPP_DEFS_H_
42#define _PPP_DEFS_H_
43
44#include <asm/types.h>
45
46
47/*
48 * The basic PPP frame.
49 */
50#define PPP_HDRLEN      4       /* octets for standard ppp header */
51#define PPP_FCSLEN      2       /* octets for FCS */
52#define PPP_MRU         1500    /* default MRU = max length of info field */
53
54#define PPP_ADDRESS(p)  (((__u8 *)(p))[0])
55#define PPP_CONTROL(p)  (((__u8 *)(p))[1])
56#define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3])
57
58/*
59 * Significant octet values.
60 */
61#define PPP_ALLSTATIONS 0xff    /* All-Stations broadcast address */
62#define PPP_UI          0x03    /* Unnumbered Information */
63#define PPP_FLAG        0x7e    /* Flag Sequence */
64#define PPP_ESCAPE      0x7d    /* Asynchronous Control Escape */
65#define PPP_TRANS       0x20    /* Asynchronous transparency modifier */
66
67/*
68 * Protocol field values.
69 */
70#define PPP_IP          0x21    /* Internet Protocol */
71#define PPP_AT          0x29    /* AppleTalk Protocol */
72#define PPP_IPX         0x2b    /* IPX protocol */
73#define PPP_VJC_COMP    0x2d    /* VJ compressed TCP */
74#define PPP_VJC_UNCOMP  0x2f    /* VJ uncompressed TCP */
75#define PPP_MP          0x3d    /* Multilink protocol */
76#define PPP_IPV6        0x57    /* Internet Protocol Version 6 */
77#define PPP_COMPFRAG    0xfb    /* fragment compressed below bundle */
78#define PPP_COMP        0xfd    /* compressed packet */
79#define PPP_MPLS_UC     0x0281  /* Multi Protocol Label Switching - Unicast */
80#define PPP_MPLS_MC     0x0283  /* Multi Protocol Label Switching - Multicast */
81#define PPP_IPCP        0x8021  /* IP Control Protocol */
82#define PPP_ATCP        0x8029  /* AppleTalk Control Protocol */
83#define PPP_IPXCP       0x802b  /* IPX Control Protocol */
84#define PPP_IPV6CP      0x8057  /* IPv6 Control Protocol */
85#define PPP_CCPFRAG     0x80fb  /* CCP at link level (below MP bundle) */
86#define PPP_CCP         0x80fd  /* Compression Control Protocol */
87#define PPP_MPLSCP      0x80fd  /* MPLS Control Protocol */
88#define PPP_LCP         0xc021  /* Link Control Protocol */
89#define PPP_PAP         0xc023  /* Password Authentication Protocol */
90#define PPP_LQR         0xc025  /* Link Quality Report protocol */
91#define PPP_CHAP        0xc223  /* Cryptographic Handshake Auth. Protocol */
92#define PPP_CBCP        0xc029  /* Callback Control Protocol */
93
94/*
95 * Values for FCS calculations.
96 */
97
98#define PPP_INITFCS     0xffff  /* Initial FCS value */
99#define PPP_GOODFCS     0xf0b8  /* Good final FCS value */
100#define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c)
101
102/*
103 * Extended asyncmap - allows any character to be escaped.
104 */
105
106typedef __u32           ext_accm[8];
107
108/*
109 * What to do with network protocol (NP) packets.
110 */
111enum NPmode {
112    NPMODE_PASS,                /* pass the packet through */
113    NPMODE_DROP,                /* silently drop the packet */
114    NPMODE_ERROR,               /* return an error */
115    NPMODE_QUEUE                /* save it up for later. */
116};
117
118/*
119 * Statistics for LQRP and pppstats
120 */
121struct pppstat  {
122    __u32       ppp_discards;   /* # frames discarded */
123
124    __u32       ppp_ibytes;     /* bytes received */
125    __u32       ppp_ioctects;   /* bytes received not in error */
126    __u32       ppp_ipackets;   /* packets received */
127    __u32       ppp_ierrors;    /* receive errors */
128    __u32       ppp_ilqrs;      /* # LQR frames received */
129
130    __u32       ppp_obytes;     /* raw bytes sent */
131    __u32       ppp_ooctects;   /* frame bytes sent */
132    __u32       ppp_opackets;   /* packets sent */
133    __u32       ppp_oerrors;    /* transmit errors */ 
134    __u32       ppp_olqrs;      /* # LQR frames sent */
135};
136
137struct vjstat {
138    __u32       vjs_packets;    /* outbound packets */
139    __u32       vjs_compressed; /* outbound compressed packets */
140    __u32       vjs_searches;   /* searches for connection state */
141    __u32       vjs_misses;     /* times couldn't find conn. state */
142    __u32       vjs_uncompressedin; /* inbound uncompressed packets */
143    __u32       vjs_compressedin;   /* inbound compressed packets */
144    __u32       vjs_errorin;    /* inbound unknown type packets */
145    __u32       vjs_tossed;     /* inbound packets tossed because of error */
146};
147
148struct compstat {
149    __u32       unc_bytes;      /* total uncompressed bytes */
150    __u32       unc_packets;    /* total uncompressed packets */
151    __u32       comp_bytes;     /* compressed bytes */
152    __u32       comp_packets;   /* compressed packets */
153    __u32       inc_bytes;      /* incompressible bytes */
154    __u32       inc_packets;    /* incompressible packets */
155
156    /* the compression ratio is defined as in_count / bytes_out */
157    __u32       in_count;       /* Bytes received */
158    __u32       bytes_out;      /* Bytes transmitted */
159
160    double      ratio;          /* not computed in kernel. */
161};
162
163struct ppp_stats {
164    struct pppstat      p;      /* basic PPP statistics */
165    struct vjstat       vj;     /* VJ header compression statistics */
166};
167
168struct ppp_comp_stats {
169    struct compstat     c;      /* packet compression statistics */
170    struct compstat     d;      /* packet decompression statistics */
171};
172
173/*
174 * The following structure records the time in seconds since
175 * the last NP packet was sent or received.
176 */
177struct ppp_idle {
178    time_t xmit_idle;           /* time since last NP packet sent */
179    time_t recv_idle;           /* time since last NP packet received */
180};
181
182#ifndef __P
183#ifdef __STDC__
184#define __P(x)  x
185#else
186#define __P(x)  ()
187#endif
188#endif
189
190#endif /* _PPP_DEFS_H_ */
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