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1 | /* |
2 | * ppp_defs.h - PPP definitions. | |
3 | * | |
4 | * Copyright (c) 1994 The Australian National University. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Permission to use, copy, modify, and distribute this software and its | |
8 | * documentation is hereby granted, provided that the above copyright | |
9 | * notice appears in all copies. This software is provided without any | |
10 | * warranty, express or implied. The Australian National University | |
11 | * makes no representations about the suitability of this software for | |
12 | * any purpose. | |
13 | * | |
14 | * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY | |
15 | * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
16 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF | |
17 | * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY | |
18 | * OF SUCH DAMAGE. | |
19 | * | |
20 | * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
21 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
22 | * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
23 | * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO | |
24 | * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, | |
25 | * OR MODIFICATIONS. | |
26 | * | |
27 | * $FreeBSD: src/sys/net/ppp_defs.h,v 1.6.2.1 2001/07/03 11:01:41 ume Exp $ | |
158abb01 | 28 | * $DragonFly: src/sys/net/ppp_layer/ppp_defs.h,v 1.3 2003/08/26 20:49:48 rob Exp $ |
984263bc MD |
29 | */ |
30 | ||
31 | #ifndef _PPP_DEFS_H_ | |
32 | #define _PPP_DEFS_H_ | |
33 | ||
34 | /* | |
35 | * The basic PPP frame. | |
36 | */ | |
37 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ | |
38 | #define PPP_FCSLEN 2 /* octets for FCS */ | |
39 | #define PPP_MRU 1500 /* default MRU = max length of info field */ | |
40 | ||
41 | #define PPP_ADDRESS(p) (((u_char *)(p))[0]) | |
42 | #define PPP_CONTROL(p) (((u_char *)(p))[1]) | |
43 | #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) | |
44 | ||
45 | /* | |
46 | * Significant octet values. | |
47 | */ | |
48 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ | |
49 | #define PPP_UI 0x03 /* Unnumbered Information */ | |
50 | #define PPP_FLAG 0x7e /* Flag Sequence */ | |
51 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ | |
52 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ | |
53 | ||
54 | /* | |
55 | * Protocol field values. | |
56 | */ | |
57 | #define PPP_IP 0x21 /* Internet Protocol */ | |
58 | #define PPP_XNS 0x25 /* Xerox NS */ | |
59 | #define PPP_AT 0x29 /* AppleTalk Protocol */ | |
60 | #define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */ | |
61 | #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ | |
62 | #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ | |
63 | #define PPP_COMP 0xfd /* compressed packet */ | |
64 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ | |
65 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ | |
66 | #define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */ | |
67 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ | |
68 | #define PPP_LCP 0xc021 /* Link Control Protocol */ | |
69 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ | |
70 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ | |
71 | #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ | |
72 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ | |
73 | #define PPP_IPV6 0x57 /* Internet Protocol version 6*/ | |
74 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ | |
75 | ||
76 | /* | |
77 | * Values for FCS calculations. | |
78 | */ | |
79 | #define PPP_INITFCS 0xffff /* Initial FCS value */ | |
80 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ | |
81 | #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) | |
82 | ||
83 | /* | |
84 | * Extended asyncmap - allows any character to be escaped. | |
85 | */ | |
86 | typedef u_int32_t ext_accm[8]; | |
87 | ||
88 | /* | |
89 | * What to do with network protocol (NP) packets. | |
90 | */ | |
91 | enum NPmode { | |
92 | NPMODE_PASS, /* pass the packet through */ | |
93 | NPMODE_DROP, /* silently drop the packet */ | |
94 | NPMODE_ERROR, /* return an error */ | |
95 | NPMODE_QUEUE /* save it up for later. */ | |
96 | }; | |
97 | ||
98 | /* | |
99 | * Statistics. | |
100 | */ | |
101 | struct pppstat { | |
102 | unsigned int ppp_ibytes; /* bytes received */ | |
103 | unsigned int ppp_ipackets; /* packets received */ | |
104 | unsigned int ppp_ierrors; /* receive errors */ | |
105 | unsigned int ppp_obytes; /* bytes sent */ | |
106 | unsigned int ppp_opackets; /* packets sent */ | |
107 | unsigned int ppp_oerrors; /* transmit errors */ | |
108 | }; | |
109 | ||
110 | struct vjstat { | |
111 | unsigned int vjs_packets; /* outbound packets */ | |
112 | unsigned int vjs_compressed; /* outbound compressed packets */ | |
113 | unsigned int vjs_searches; /* searches for connection state */ | |
114 | unsigned int vjs_misses; /* times couldn't find conn. state */ | |
115 | unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ | |
116 | unsigned int vjs_compressedin; /* inbound compressed packets */ | |
117 | unsigned int vjs_errorin; /* inbound unknown type packets */ | |
118 | unsigned int vjs_tossed; /* inbound packets tossed because of error */ | |
119 | }; | |
120 | ||
121 | struct ppp_stats { | |
122 | struct pppstat p; /* basic PPP statistics */ | |
123 | struct vjstat vj; /* VJ header compression statistics */ | |
124 | }; | |
125 | ||
126 | struct compstat { | |
127 | unsigned int unc_bytes; /* total uncompressed bytes */ | |
128 | unsigned int unc_packets; /* total uncompressed packets */ | |
129 | unsigned int comp_bytes; /* compressed bytes */ | |
130 | unsigned int comp_packets; /* compressed packets */ | |
131 | unsigned int inc_bytes; /* incompressible bytes */ | |
132 | unsigned int inc_packets; /* incompressible packets */ | |
133 | unsigned int ratio; /* recent compression ratio << 8 */ | |
134 | }; | |
135 | ||
136 | struct ppp_comp_stats { | |
137 | struct compstat c; /* packet compression statistics */ | |
138 | struct compstat d; /* packet decompression statistics */ | |
139 | }; | |
140 | ||
141 | /* | |
142 | * The following structure records the time in seconds since | |
143 | * the last NP packet was sent or received. | |
144 | */ | |
145 | struct ppp_idle { | |
146 | time_t xmit_idle; /* time since last NP packet sent */ | |
147 | time_t recv_idle; /* time since last NP packet received */ | |
148 | }; | |
149 | ||
984263bc MD |
150 | |
151 | #endif /* _PPP_DEFS_H_ */ |