FreeBSD/Linux Kernel Cross Reference
sys/net/ppp_defs.h
1 /*
2 * ppp_defs.h - PPP definitions.
3 */
4 /*-
5 * Copyright (c) 1994 The Australian National University.
6 * All rights reserved.
7 *
8 * Permission to use, copy, modify, and distribute this software and its
9 * documentation is hereby granted, provided that the above copyright
10 * notice appears in all copies. This software is provided without any
11 * warranty, express or implied. The Australian National University
12 * makes no representations about the suitability of this software for
13 * any purpose.
14 *
15 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
16 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
17 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
18 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
19 * OF SUCH DAMAGE.
20 *
21 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
23 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
24 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
25 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
26 * OR MODIFICATIONS.
27 *
28 * $FreeBSD$
29 */
30
31 #ifndef _PPP_DEFS_H_
32 #define _PPP_DEFS_H_
33
34 #include <sys/_types.h>
35
36 /*
37 * The basic PPP frame.
38 */
39 #define PPP_HDRLEN 4 /* octets for standard ppp header */
40 #define PPP_FCSLEN 2 /* octets for FCS */
41 #define PPP_MRU 1500 /* default MRU = max length of info field */
42
43 #define PPP_ADDRESS(p) (((u_char *)(p))[0])
44 #define PPP_CONTROL(p) (((u_char *)(p))[1])
45 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
46
47 /*
48 * Significant octet values.
49 */
50 #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
51 #define PPP_UI 0x03 /* Unnumbered Information */
52 #define PPP_FLAG 0x7e /* Flag Sequence */
53 #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
54 #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
55
56 /*
57 * Protocol field values.
58 */
59 #define PPP_IP 0x21 /* Internet Protocol */
60 #define PPP_XNS 0x25 /* Xerox NS */
61 #define PPP_AT 0x29 /* AppleTalk Protocol */
62 #define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */
63 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
64 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
65 #define PPP_COMP 0xfd /* compressed packet */
66 #define PPP_IPCP 0x8021 /* IP Control Protocol */
67 #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
68 #define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */
69 #define PPP_CCP 0x80fd /* Compression Control Protocol */
70 #define PPP_LCP 0xc021 /* Link Control Protocol */
71 #define PPP_PAP 0xc023 /* Password Authentication Protocol */
72 #define PPP_LQR 0xc025 /* Link Quality Report protocol */
73 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
74 #define PPP_CBCP 0xc029 /* Callback Control Protocol */
75 #define PPP_IPV6 0x57 /* Internet Protocol version 6*/
76 #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
77
78 /*
79 * Values for FCS calculations.
80 */
81 #define PPP_INITFCS 0xffff /* Initial FCS value */
82 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
83 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
84
85 /*
86 * Extended asyncmap - allows any character to be escaped.
87 */
88 typedef __uint32_t ext_accm[8];
89
90 /*
91 * What to do with network protocol (NP) packets.
92 */
93 enum NPmode {
94 NPMODE_PASS, /* pass the packet through */
95 NPMODE_DROP, /* silently drop the packet */
96 NPMODE_ERROR, /* return an error */
97 NPMODE_QUEUE /* save it up for later. */
98 };
99
100 /*
101 * Statistics.
102 */
103 struct pppstat {
104 unsigned int ppp_ibytes; /* bytes received */
105 unsigned int ppp_ipackets; /* packets received */
106 unsigned int ppp_ierrors; /* receive errors */
107 unsigned int ppp_obytes; /* bytes sent */
108 unsigned int ppp_opackets; /* packets sent */
109 unsigned int ppp_oerrors; /* transmit errors */
110 };
111
112 struct vjstat {
113 unsigned int vjs_packets; /* outbound packets */
114 unsigned int vjs_compressed; /* outbound compressed packets */
115 unsigned int vjs_searches; /* searches for connection state */
116 unsigned int vjs_misses; /* times couldn't find conn. state */
117 unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
118 unsigned int vjs_compressedin; /* inbound compressed packets */
119 unsigned int vjs_errorin; /* inbound unknown type packets */
120 unsigned int vjs_tossed; /* inbound packets tossed because of error */
121 };
122
123 struct ppp_stats {
124 struct pppstat p; /* basic PPP statistics */
125 struct vjstat vj; /* VJ header compression statistics */
126 };
127
128 struct compstat {
129 unsigned int unc_bytes; /* total uncompressed bytes */
130 unsigned int unc_packets; /* total uncompressed packets */
131 unsigned int comp_bytes; /* compressed bytes */
132 unsigned int comp_packets; /* compressed packets */
133 unsigned int inc_bytes; /* incompressible bytes */
134 unsigned int inc_packets; /* incompressible packets */
135 unsigned int ratio; /* recent compression ratio << 8 */
136 };
137
138 struct ppp_comp_stats {
139 struct compstat c; /* packet compression statistics */
140 struct compstat d; /* packet decompression statistics */
141 };
142
143 /*
144 * The following structure records the time in seconds since
145 * the last NP packet was sent or received.
146 */
147 struct ppp_idle {
148 __time_t xmit_idle; /* time since last NP packet sent */
149 __time_t recv_idle; /* time since last NP packet received */
150 };
151
152 #ifndef __P
153 #ifdef __STDC__
154 #define __P(x) x
155 #else
156 #define __P(x) ()
157 #endif
158 #endif
159
160 #endif /* _PPP_DEFS_H_ */
Cache object: e461c997a4c9245dab5a37b938ad21a8
|