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1da177e4 LT |
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 | ||
28 | /* | |
29 | * ==FILEVERSION 20000114== | |
30 | * | |
31 | * NOTE TO MAINTAINERS: | |
32 | * If you modify this file at all, please set the above date. | |
33 | * ppp_defs.h is shipped with a PPP distribution as well as with the kernel; | |
34 | * if everyone increases the FILEVERSION number above, then scripts | |
35 | * can do the right thing when deciding whether to install a new ppp_defs.h | |
36 | * file. Don't change the format of that line otherwise, so the | |
37 | * installation script can recognize it. | |
38 | */ | |
39 | ||
40 | #ifndef _PPP_DEFS_H_ | |
41 | #define _PPP_DEFS_H_ | |
42 | ||
1da177e4 LT |
43 | /* |
44 | * The basic PPP frame. | |
45 | */ | |
46 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ | |
47 | #define PPP_FCSLEN 2 /* octets for FCS */ | |
48 | #define PPP_MRU 1500 /* default MRU = max length of info field */ | |
49 | ||
50 | #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) | |
51 | #define PPP_CONTROL(p) (((__u8 *)(p))[1]) | |
52 | #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) | |
53 | ||
54 | /* | |
55 | * Significant octet values. | |
56 | */ | |
57 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ | |
58 | #define PPP_UI 0x03 /* Unnumbered Information */ | |
59 | #define PPP_FLAG 0x7e /* Flag Sequence */ | |
60 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ | |
61 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ | |
62 | ||
63 | /* | |
64 | * Protocol field values. | |
65 | */ | |
66 | #define PPP_IP 0x21 /* Internet Protocol */ | |
67 | #define PPP_AT 0x29 /* AppleTalk Protocol */ | |
68 | #define PPP_IPX 0x2b /* IPX protocol */ | |
69 | #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ | |
70 | #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ | |
71 | #define PPP_MP 0x3d /* Multilink protocol */ | |
72 | #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ | |
73 | #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ | |
74 | #define PPP_COMP 0xfd /* compressed packet */ | |
75 | #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ | |
76 | #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ | |
77 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ | |
78 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ | |
79 | #define PPP_IPXCP 0x802b /* IPX Control Protocol */ | |
80 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ | |
81 | #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ | |
82 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ | |
83 | #define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ | |
84 | #define PPP_LCP 0xc021 /* Link Control Protocol */ | |
85 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ | |
86 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ | |
87 | #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ | |
88 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ | |
89 | ||
90 | /* | |
91 | * Values for FCS calculations. | |
92 | */ | |
93 | ||
94 | #define PPP_INITFCS 0xffff /* Initial FCS value */ | |
95 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ | |
2c88f4a8 DW |
96 | |
97 | #ifdef __KERNEL__ | |
98 | #include <linux/crc-ccitt.h> | |
1da177e4 | 99 | #define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c) |
2c88f4a8 | 100 | #endif |
1da177e4 LT |
101 | |
102 | /* | |
103 | * Extended asyncmap - allows any character to be escaped. | |
104 | */ | |
105 | ||
106 | typedef __u32 ext_accm[8]; | |
107 | ||
108 | /* | |
109 | * What to do with network protocol (NP) packets. | |
110 | */ | |
111 | enum 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 | */ | |
121 | struct 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 | ||
137 | struct 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 | ||
148 | struct 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 | ||
163 | struct ppp_stats { | |
164 | struct pppstat p; /* basic PPP statistics */ | |
165 | struct vjstat vj; /* VJ header compression statistics */ | |
166 | }; | |
167 | ||
168 | struct 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 | */ | |
177 | struct 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 | ||
1da177e4 | 182 | #endif /* _PPP_DEFS_H_ */ |