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1da177e4 LT |
1 | /* |
2 | * ppp_defs.h - PPP definitions. | |
3 | * | |
784db3f0 | 4 | * Copyright 1994-2000 Paul Mackerras. |
1da177e4 | 5 | * |
784db3f0 PM |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * version 2 as published by the Free Software Foundation. | |
1da177e4 | 9 | */ |
7260a916 JSR |
10 | #include <linux/types.h> |
11 | ||
1da177e4 LT |
12 | #ifndef _PPP_DEFS_H_ |
13 | #define _PPP_DEFS_H_ | |
14 | ||
1da177e4 LT |
15 | /* |
16 | * The basic PPP frame. | |
17 | */ | |
18 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ | |
19 | #define PPP_FCSLEN 2 /* octets for FCS */ | |
20 | #define PPP_MRU 1500 /* default MRU = max length of info field */ | |
21 | ||
22 | #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) | |
23 | #define PPP_CONTROL(p) (((__u8 *)(p))[1]) | |
24 | #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) | |
25 | ||
26 | /* | |
27 | * Significant octet values. | |
28 | */ | |
29 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ | |
30 | #define PPP_UI 0x03 /* Unnumbered Information */ | |
31 | #define PPP_FLAG 0x7e /* Flag Sequence */ | |
32 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ | |
33 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ | |
34 | ||
35 | /* | |
36 | * Protocol field values. | |
37 | */ | |
38 | #define PPP_IP 0x21 /* Internet Protocol */ | |
39 | #define PPP_AT 0x29 /* AppleTalk Protocol */ | |
40 | #define PPP_IPX 0x2b /* IPX protocol */ | |
41 | #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ | |
42 | #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ | |
43 | #define PPP_MP 0x3d /* Multilink protocol */ | |
44 | #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ | |
45 | #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ | |
46 | #define PPP_COMP 0xfd /* compressed packet */ | |
47 | #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ | |
48 | #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ | |
49 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ | |
50 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ | |
51 | #define PPP_IPXCP 0x802b /* IPX Control Protocol */ | |
52 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ | |
53 | #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ | |
54 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ | |
55 | #define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ | |
56 | #define PPP_LCP 0xc021 /* Link Control Protocol */ | |
57 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ | |
58 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ | |
59 | #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ | |
60 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ | |
61 | ||
62 | /* | |
63 | * Values for FCS calculations. | |
64 | */ | |
65 | ||
66 | #define PPP_INITFCS 0xffff /* Initial FCS value */ | |
67 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ | |
2c88f4a8 DW |
68 | |
69 | #ifdef __KERNEL__ | |
70 | #include <linux/crc-ccitt.h> | |
1da177e4 | 71 | #define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c) |
2c88f4a8 | 72 | #endif |
1da177e4 LT |
73 | |
74 | /* | |
75 | * Extended asyncmap - allows any character to be escaped. | |
76 | */ | |
77 | ||
78 | typedef __u32 ext_accm[8]; | |
79 | ||
80 | /* | |
81 | * What to do with network protocol (NP) packets. | |
82 | */ | |
83 | enum NPmode { | |
84 | NPMODE_PASS, /* pass the packet through */ | |
85 | NPMODE_DROP, /* silently drop the packet */ | |
86 | NPMODE_ERROR, /* return an error */ | |
87 | NPMODE_QUEUE /* save it up for later. */ | |
88 | }; | |
89 | ||
90 | /* | |
91 | * Statistics for LQRP and pppstats | |
92 | */ | |
93 | struct pppstat { | |
94 | __u32 ppp_discards; /* # frames discarded */ | |
95 | ||
96 | __u32 ppp_ibytes; /* bytes received */ | |
97 | __u32 ppp_ioctects; /* bytes received not in error */ | |
98 | __u32 ppp_ipackets; /* packets received */ | |
99 | __u32 ppp_ierrors; /* receive errors */ | |
100 | __u32 ppp_ilqrs; /* # LQR frames received */ | |
101 | ||
102 | __u32 ppp_obytes; /* raw bytes sent */ | |
103 | __u32 ppp_ooctects; /* frame bytes sent */ | |
104 | __u32 ppp_opackets; /* packets sent */ | |
105 | __u32 ppp_oerrors; /* transmit errors */ | |
106 | __u32 ppp_olqrs; /* # LQR frames sent */ | |
107 | }; | |
108 | ||
109 | struct vjstat { | |
110 | __u32 vjs_packets; /* outbound packets */ | |
111 | __u32 vjs_compressed; /* outbound compressed packets */ | |
112 | __u32 vjs_searches; /* searches for connection state */ | |
113 | __u32 vjs_misses; /* times couldn't find conn. state */ | |
114 | __u32 vjs_uncompressedin; /* inbound uncompressed packets */ | |
115 | __u32 vjs_compressedin; /* inbound compressed packets */ | |
116 | __u32 vjs_errorin; /* inbound unknown type packets */ | |
117 | __u32 vjs_tossed; /* inbound packets tossed because of error */ | |
118 | }; | |
119 | ||
120 | struct compstat { | |
121 | __u32 unc_bytes; /* total uncompressed bytes */ | |
122 | __u32 unc_packets; /* total uncompressed packets */ | |
123 | __u32 comp_bytes; /* compressed bytes */ | |
124 | __u32 comp_packets; /* compressed packets */ | |
125 | __u32 inc_bytes; /* incompressible bytes */ | |
126 | __u32 inc_packets; /* incompressible packets */ | |
127 | ||
128 | /* the compression ratio is defined as in_count / bytes_out */ | |
129 | __u32 in_count; /* Bytes received */ | |
130 | __u32 bytes_out; /* Bytes transmitted */ | |
131 | ||
132 | double ratio; /* not computed in kernel. */ | |
133 | }; | |
134 | ||
135 | struct ppp_stats { | |
136 | struct pppstat p; /* basic PPP statistics */ | |
137 | struct vjstat vj; /* VJ header compression statistics */ | |
138 | }; | |
139 | ||
140 | struct ppp_comp_stats { | |
141 | struct compstat c; /* packet compression statistics */ | |
142 | struct compstat d; /* packet decompression statistics */ | |
143 | }; | |
144 | ||
145 | /* | |
146 | * The following structure records the time in seconds since | |
147 | * the last NP packet was sent or received. | |
148 | */ | |
149 | struct ppp_idle { | |
85efde6f AB |
150 | __kernel_time_t xmit_idle; /* time since last NP packet sent */ |
151 | __kernel_time_t recv_idle; /* time since last NP packet received */ | |
1da177e4 LT |
152 | }; |
153 | ||
1da177e4 | 154 | #endif /* _PPP_DEFS_H_ */ |