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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * ppp_defs.h - PPP definitions.
24: *
25: * Copyright (c) 1994 The Australian National University.
26: * All rights reserved.
27: *
28: * Permission to use, copy, modify, and distribute this software and its
29: * documentation is hereby granted, provided that the above copyright
30: * notice appears in all copies. This software is provided without any
31: * warranty, express or implied. The Australian National University
32: * makes no representations about the suitability of this software for
33: * any purpose.
34: *
35: * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
36: * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
37: * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
38: * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
39: * OF SUCH DAMAGE.
40: *
41: * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
42: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
43: * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
44: * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
45: * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
46: * OR MODIFICATIONS.
47: *
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) (((u_char *)(p))[0])
61: #define PPP_CONTROL(p) (((u_char *)(p))[1])
62: #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(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_XNS 0x25 /* Xerox NS */
78: #define PPP_AT 0x29 /* AppleTalk Protocol */
79: #define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */
80: #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
81: #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
82: #define PPP_COMP 0xfd /* compressed packet */
83: #define PPP_IPCP 0x8021 /* IP Control Protocol */
84: #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
85: #define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */
86: #define PPP_CCP 0x80fd /* Compression Control Protocol */
87: #define PPP_LCP 0xc021 /* Link Control Protocol */
88: #define PPP_PAP 0xc023 /* Password Authentication Protocol */
89: #define PPP_LQR 0xc025 /* Link Quality Report protocol */
90: #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
91: #define PPP_CBCP 0xc029 /* Callback Control Protocol */
92:
93: /*
94: * Values for FCS calculations.
95: */
96: #define PPP_INITFCS 0xffff /* Initial FCS value */
97: #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
98: #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
99:
100: /*
101: * Extended asyncmap - allows any character to be escaped.
102: */
103: typedef u_int32_t ext_accm[8];
104:
105: /*
106: * What to do with network protocol (NP) packets.
107: */
108: enum NPmode {
109: NPMODE_PASS, /* pass the packet through */
110: NPMODE_DROP, /* silently drop the packet */
111: NPMODE_ERROR, /* return an error */
112: NPMODE_QUEUE /* save it up for later. */
113: };
114:
115: /*
116: * Statistics.
117: */
118: struct pppstat {
119: unsigned int ppp_ibytes; /* bytes received */
120: unsigned int ppp_ipackets; /* packets received */
121: unsigned int ppp_ierrors; /* receive errors */
122: unsigned int ppp_obytes; /* bytes sent */
123: unsigned int ppp_opackets; /* packets sent */
124: unsigned int ppp_oerrors; /* transmit errors */
125: };
126:
127: struct vjstat {
128: unsigned int vjs_packets; /* outbound packets */
129: unsigned int vjs_compressed; /* outbound compressed packets */
130: unsigned int vjs_searches; /* searches for connection state */
131: unsigned int vjs_misses; /* times couldn't find conn. state */
132: unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
133: unsigned int vjs_compressedin; /* inbound compressed packets */
134: unsigned int vjs_errorin; /* inbound unknown type packets */
135: unsigned int vjs_tossed; /* inbound packets tossed because of error */
136: };
137:
138: struct ppp_stats {
139: struct pppstat p; /* basic PPP statistics */
140: struct vjstat vj; /* VJ header compression statistics */
141: };
142:
143: struct compstat {
144: unsigned int unc_bytes; /* total uncompressed bytes */
145: unsigned int unc_packets; /* total uncompressed packets */
146: unsigned int comp_bytes; /* compressed bytes */
147: unsigned int comp_packets; /* compressed packets */
148: unsigned int inc_bytes; /* incompressible bytes */
149: unsigned int inc_packets; /* incompressible packets */
150: unsigned int ratio; /* recent compression ratio << 8 */
151: };
152:
153: struct ppp_comp_stats {
154: struct compstat c; /* packet compression statistics */
155: struct compstat d; /* packet decompression statistics */
156: };
157:
158: /*
159: * The following structure records the time in seconds since
160: * the last NP packet was sent or received.
161: */
162: struct ppp_idle {
163: time_t xmit_idle; /* time since last NP packet sent */
164: time_t recv_idle; /* time since last NP packet received */
165: };
166:
167: #ifndef __P
168: #ifdef __STDC__
169: #define __P(x) x
170: #else
171: #define __P(x) ()
172: #endif
173: #endif
174:
175: #endif /* _PPP_DEFS_H_ */
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