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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 | |
28 | #include <linux/types.h> |
29 | |
30 | /* |
31 | * ==FILEVERSION 20000114== |
32 | * |
33 | * NOTE TO MAINTAINERS: |
34 | * If you modify this file at all, please set the above date. |
35 | * ppp_defs.h is shipped with a PPP distribution as well as with the kernel; |
36 | * if everyone increases the FILEVERSION number above, then scripts |
37 | * can do the right thing when deciding whether to install a new ppp_defs.h |
38 | * file. Don't change the format of that line otherwise, so the |
39 | * installation script can recognize it. |
40 | */ |
41 | |
42 | #ifndef _PPP_DEFS_H_ |
43 | #define _PPP_DEFS_H_ |
44 | |
45 | /* |
46 | * The basic PPP frame. |
47 | */ |
48 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ |
49 | #define PPP_FCSLEN 2 /* octets for FCS */ |
50 | #define PPP_MRU 1500 /* default MRU = max length of info field */ |
51 | |
52 | #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) |
53 | #define PPP_CONTROL(p) (((__u8 *)(p))[1]) |
54 | #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) |
55 | |
56 | /* |
57 | * Significant octet values. |
58 | */ |
59 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ |
60 | #define PPP_UI 0x03 /* Unnumbered Information */ |
61 | #define PPP_FLAG 0x7e /* Flag Sequence */ |
62 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ |
63 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ |
64 | |
65 | /* |
66 | * Protocol field values. |
67 | */ |
68 | #define PPP_IP 0x21 /* Internet Protocol */ |
69 | #define PPP_AT 0x29 /* AppleTalk Protocol */ |
70 | #define PPP_IPX 0x2b /* IPX protocol */ |
71 | #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ |
72 | #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ |
73 | #define PPP_MP 0x3d /* Multilink protocol */ |
74 | #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ |
75 | #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ |
76 | #define PPP_COMP 0xfd /* compressed packet */ |
77 | #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ |
78 | #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ |
79 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ |
80 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ |
81 | #define PPP_IPXCP 0x802b /* IPX Control Protocol */ |
82 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ |
83 | #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ |
84 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ |
85 | #define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ |
86 | #define PPP_LCP 0xc021 /* Link Control Protocol */ |
87 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ |
88 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ |
89 | #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ |
90 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ |
91 | |
92 | /* |
93 | * Values for FCS calculations. |
94 | */ |
95 | |
96 | #define PPP_INITFCS 0xffff /* Initial FCS value */ |
97 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ |
98 | |
99 | #ifdef __KERNEL__ |
100 | #include <linux/crc-ccitt.h> |
101 | #define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c) |
102 | #endif |
103 | |
104 | /* |
105 | * Extended asyncmap - allows any character to be escaped. |
106 | */ |
107 | |
108 | typedef __u32 ext_accm[8]; |
109 | |
110 | /* |
111 | * What to do with network protocol (NP) packets. |
112 | */ |
113 | enum NPmode { |
114 | NPMODE_PASS, /* pass the packet through */ |
115 | NPMODE_DROP, /* silently drop the packet */ |
116 | NPMODE_ERROR, /* return an error */ |
117 | NPMODE_QUEUE /* save it up for later. */ |
118 | }; |
119 | |
120 | /* |
121 | * Statistics for LQRP and pppstats |
122 | */ |
123 | struct pppstat { |
124 | __u32 ppp_discards; /* # frames discarded */ |
125 | |
126 | __u32 ppp_ibytes; /* bytes received */ |
127 | __u32 ppp_ioctects; /* bytes received not in error */ |
128 | __u32 ppp_ipackets; /* packets received */ |
129 | __u32 ppp_ierrors; /* receive errors */ |
130 | __u32 ppp_ilqrs; /* # LQR frames received */ |
131 | |
132 | __u32 ppp_obytes; /* raw bytes sent */ |
133 | __u32 ppp_ooctects; /* frame bytes sent */ |
134 | __u32 ppp_opackets; /* packets sent */ |
135 | __u32 ppp_oerrors; /* transmit errors */ |
136 | __u32 ppp_olqrs; /* # LQR frames sent */ |
137 | }; |
138 | |
139 | struct vjstat { |
140 | __u32 vjs_packets; /* outbound packets */ |
141 | __u32 vjs_compressed; /* outbound compressed packets */ |
142 | __u32 vjs_searches; /* searches for connection state */ |
143 | __u32 vjs_misses; /* times couldn't find conn. state */ |
144 | __u32 vjs_uncompressedin; /* inbound uncompressed packets */ |
145 | __u32 vjs_compressedin; /* inbound compressed packets */ |
146 | __u32 vjs_errorin; /* inbound unknown type packets */ |
147 | __u32 vjs_tossed; /* inbound packets tossed because of error */ |
148 | }; |
149 | |
150 | struct compstat { |
151 | __u32 unc_bytes; /* total uncompressed bytes */ |
152 | __u32 unc_packets; /* total uncompressed packets */ |
153 | __u32 comp_bytes; /* compressed bytes */ |
154 | __u32 comp_packets; /* compressed packets */ |
155 | __u32 inc_bytes; /* incompressible bytes */ |
156 | __u32 inc_packets; /* incompressible packets */ |
157 | |
158 | /* the compression ratio is defined as in_count / bytes_out */ |
159 | __u32 in_count; /* Bytes received */ |
160 | __u32 bytes_out; /* Bytes transmitted */ |
161 | |
162 | double ratio; /* not computed in kernel. */ |
163 | }; |
164 | |
165 | struct ppp_stats { |
166 | struct pppstat p; /* basic PPP statistics */ |
167 | struct vjstat vj; /* VJ header compression statistics */ |
168 | }; |
169 | |
170 | struct ppp_comp_stats { |
171 | struct compstat c; /* packet compression statistics */ |
172 | struct compstat d; /* packet decompression statistics */ |
173 | }; |
174 | |
175 | /* |
176 | * The following structure records the time in seconds since |
177 | * the last NP packet was sent or received. |
178 | */ |
179 | struct ppp_idle { |
180 | __kernel_time_t xmit_idle; /* time since last NP packet sent */ |
181 | __kernel_time_t recv_idle; /* time since last NP packet received */ |
182 | }; |
183 | |
184 | #endif /* _PPP_DEFS_H_ */ |
185 |
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