1 | /* $NetBSD: ppp_defs.h,v 1.13 2008/02/20 17:05:53 matt Exp $ */ |
2 | /* Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp */ |
3 | |
4 | /* |
5 | * ppp_defs.h - PPP definitions. |
6 | * |
7 | * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in |
18 | * the documentation and/or other materials provided with the |
19 | * distribution. |
20 | * |
21 | * 3. The name(s) of the authors of this software must not be used to |
22 | * endorse or promote products derived from this software without |
23 | * prior written permission. |
24 | * |
25 | * 4. Redistributions of any form whatsoever must retain the following |
26 | * acknowledgment: |
27 | * "This product includes software developed by Paul Mackerras |
28 | * <paulus@samba.org>". |
29 | * |
30 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO |
31 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
32 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
33 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
34 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
35 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
36 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
37 | */ |
38 | |
39 | #ifndef _NET_PPP_DEFS_H_ |
40 | #define _NET_PPP_DEFS_H_ |
41 | |
42 | /* |
43 | * The basic PPP frame. |
44 | */ |
45 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ |
46 | #define PPP_FCSLEN 2 /* octets for FCS */ |
47 | |
48 | /* |
49 | * Packet sizes |
50 | * |
51 | * Note - lcp shouldn't be allowed to negotiate stuff outside these |
52 | * limits. See lcp.h in the pppd directory. |
53 | * (XXX - these constants should simply be shared by lcp.c instead |
54 | * of living in lcp.h) |
55 | */ |
56 | #define PPP_MTU 1500 /* Default MTU (size of Info field) */ |
57 | #define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN) |
58 | #define PPP_MINMTU 64 |
59 | #define PPP_MRU 1500 /* default MRU = max length of info field */ |
60 | #define PPP_MAXMRU 65000 /* Largest MRU we allow */ |
61 | #define PPP_MINMRU 128 |
62 | |
63 | #define PPP_ADDRESS(p) (((const u_char *)(p))[0]) |
64 | #define PPP_CONTROL(p) (((const u_char *)(p))[1]) |
65 | #define PPP_PROTOCOL(p) \ |
66 | ((((const u_char *)(p))[2] << 8) + ((const u_char *)(p))[3]) |
67 | |
68 | /* |
69 | * Significant octet values. |
70 | */ |
71 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ |
72 | #define PPP_UI 0x03 /* Unnumbered Information */ |
73 | #define PPP_FLAG 0x7e /* Flag Sequence */ |
74 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ |
75 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ |
76 | |
77 | /* |
78 | * Protocol field values. |
79 | */ |
80 | #define PPP_IP 0x0021 /* Internet Protocol */ |
81 | #define PPP_ISO 0x0023 /* ISO OSI Protocol */ |
82 | #define PPP_XNS 0x0025 /* Xerox NS Protocol */ |
83 | #define PPP_AT 0x0029 /* AppleTalk Protocol */ |
84 | #define PPP_IPX 0x002b /* IPX protocol */ |
85 | #define PPP_VJC_COMP 0x002d /* VJ compressed TCP */ |
86 | #define PPP_VJC_UNCOMP 0x002f /* VJ uncompressed TCP */ |
87 | #define PPP_IPV6 0x0057 /* Internet Protocol Version 6 */ |
88 | #define PPP_COMP 0x00fd /* compressed packet */ |
89 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ |
90 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ |
91 | #define PPP_IPXCP 0x802b /* IPX Control Protocol */ |
92 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ |
93 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ |
94 | #define PPP_ECP 0x8053 /* Encryption Control Protocol */ |
95 | #define PPP_LCP 0xc021 /* Link Control Protocol */ |
96 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ |
97 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ |
98 | #define PPP_CHAP 0xc223 /* Crypto Handshake Auth. Protocol */ |
99 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ |
100 | #define PPP_EAP 0xc227 /* Extensible Authentication Protocol */ |
101 | |
102 | /* |
103 | * Values for FCS calculations. |
104 | */ |
105 | #define PPP_INITFCS 0xffff /* Initial FCS value */ |
106 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ |
107 | #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) |
108 | |
109 | /* |
110 | * Extended asyncmap - allows any character to be escaped. |
111 | */ |
112 | typedef uint32_t ext_accm[8]; |
113 | |
114 | /* |
115 | * What to do with network protocol (NP) packets. |
116 | */ |
117 | enum NPmode { |
118 | NPMODE_PASS, /* pass the packet through */ |
119 | NPMODE_DROP, /* silently drop the packet */ |
120 | NPMODE_ERROR, /* return an error */ |
121 | NPMODE_QUEUE /* save it up for later. */ |
122 | }; |
123 | |
124 | /* |
125 | * Statistics. |
126 | */ |
127 | struct pppstat { |
128 | unsigned int ppp_ibytes; /* bytes received */ |
129 | unsigned int ppp_ipackets; /* packets received */ |
130 | unsigned int ppp_ierrors; /* receive errors */ |
131 | unsigned int ppp_obytes; /* bytes sent */ |
132 | unsigned int ppp_opackets; /* packets sent */ |
133 | unsigned int ppp_oerrors; /* transmit errors */ |
134 | }; |
135 | |
136 | struct vjstat { |
137 | unsigned int vjs_packets; /* outbound packets */ |
138 | unsigned int vjs_compressed; /* outbound compressed packets */ |
139 | unsigned int vjs_searches; /* searches for connection state */ |
140 | unsigned int vjs_misses; /* times couldn't find conn. state */ |
141 | unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ |
142 | unsigned int vjs_compressedin; /* inbound compressed packets */ |
143 | unsigned int vjs_errorin; /* inbound unknown type packets */ |
144 | unsigned int vjs_tossed; /* inbound packets tossed because of error */ |
145 | }; |
146 | |
147 | struct ppp_stats { |
148 | struct pppstat p; /* basic PPP statistics */ |
149 | struct vjstat vj; /* VJ header compression statistics */ |
150 | }; |
151 | |
152 | struct compstat { |
153 | unsigned int unc_bytes; /* total uncompressed bytes */ |
154 | unsigned int unc_packets; /* total uncompressed packets */ |
155 | unsigned int comp_bytes; /* compressed bytes */ |
156 | unsigned int comp_packets; /* compressed packets */ |
157 | unsigned int inc_bytes; /* incompressible bytes */ |
158 | unsigned int inc_packets; /* incompressible packets */ |
159 | unsigned int ratio; /* recent compression ratio << 8 */ |
160 | }; |
161 | |
162 | struct ppp_comp_stats { |
163 | struct compstat c; /* packet compression statistics */ |
164 | struct compstat d; /* packet decompression statistics */ |
165 | }; |
166 | |
167 | /* |
168 | * The following structure records the time in seconds since |
169 | * the last NP packet was sent or received. |
170 | */ |
171 | struct ppp_idle { |
172 | time_t xmit_idle; /* time since last NP packet sent */ |
173 | time_t recv_idle; /* time since last NP packet received */ |
174 | }; |
175 | |
176 | #endif /* !_NET_PPP_DEFS_H_ */ |
177 | |