1 /* From: ppp_defs.h,v 1.2 1994/09/21 01:31:06 paulus Exp */
4 * ppp_defs.h - PPP definitions.
6 * Copyright (c) 1994 The Australian National University.
9 * Permission to use, copy, modify, and distribute this software and its
10 * documentation is hereby granted, provided that the above copyright
11 * notice appears in all copies. This software is provided without any
12 * warranty, express or implied. The Australian National University
13 * makes no representations about the suitability of this software for
16 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
17 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
18 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
19 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
22 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
23 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
24 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
25 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
26 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
31 * ==FILEVERSION 960302==
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.
46 * The basic PPP frame.
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 */
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])
57 * Significant octet values.
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 */
66 * Protocol field values.
68 #define PPP_IP 0x21 /* Internet Protocol */
69 #define PPP_IPX 0x2b /* IPX protocol */
70 #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
71 #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
72 #define PPP_COMP 0xfd /* compressed packet */
73 #define PPP_IPCP 0x8021 /* IP Control Protocol */
74 #define PPP_IPXCP 0x802b /* IPX Control Protocol */
75 #define PPP_CCP 0x80fd /* Compression Control Protocol */
76 #define PPP_LCP 0xc021 /* Link Control Protocol */
77 #define PPP_PAP 0xc023 /* Password Authentication Protocol */
78 #define PPP_LQR 0xc025 /* Link Quality Report protocol */
79 #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
82 * Values for FCS calculations.
85 #define PPP_INITFCS 0xffff /* Initial FCS value */
86 #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
87 #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
90 * Extended asyncmap - allows any character to be escaped.
93 typedef __u32 ext_accm[8];
96 * What to do with network protocol (NP) packets.
99 NPMODE_PASS, /* pass the packet through */
100 NPMODE_DROP, /* silently drop the packet */
101 NPMODE_ERROR, /* return an error */
102 NPMODE_QUEUE /* save it up for later. */
106 * Statistics for LQRP and pppstats
109 __u32 ppp_discards; /* # frames discarded */
111 __u32 ppp_ibytes; /* bytes received */
112 __u32 ppp_ioctects; /* bytes received not in error */
113 __u32 ppp_ipackets; /* packets received */
114 __u32 ppp_ierrors; /* receive errors */
115 __u32 ppp_ilqrs; /* # LQR frames received */
117 __u32 ppp_obytes; /* raw bytes sent */
118 __u32 ppp_ooctects; /* frame bytes sent */
119 __u32 ppp_opackets; /* packets sent */
120 __u32 ppp_oerrors; /* transmit errors */
121 __u32 ppp_olqrs; /* # LQR frames sent */
125 __u32 vjs_packets; /* outbound packets */
126 __u32 vjs_compressed; /* outbound compressed packets */
127 __u32 vjs_searches; /* searches for connection state */
128 __u32 vjs_misses; /* times couldn't find conn. state */
129 __u32 vjs_uncompressedin; /* inbound uncompressed packets */
130 __u32 vjs_compressedin; /* inbound compressed packets */
131 __u32 vjs_errorin; /* inbound unknown type packets */
132 __u32 vjs_tossed; /* inbound packets tossed because of error */
136 __u32 unc_bytes; /* total uncompressed bytes */
137 __u32 unc_packets; /* total uncompressed packets */
138 __u32 comp_bytes; /* compressed bytes */
139 __u32 comp_packets; /* compressed packets */
140 __u32 inc_bytes; /* incompressible bytes */
141 __u32 inc_packets; /* incompressible packets */
143 /* the compression ratio is defined as in_count / bytes_out */
144 __u32 in_count; /* Bytes received */
145 __u32 bytes_out; /* Bytes transmitted */
147 double ratio; /* not computed in kernel. */
151 struct pppstat p; /* basic PPP statistics */
152 struct vjstat vj; /* VJ header compression statistics */
155 struct ppp_comp_stats {
156 struct compstat c; /* packet compression statistics */
157 struct compstat d; /* packet decompression statistics */
161 * The following structure records the time in seconds since
162 * the last NP packet was sent or received.
165 time_t xmit_idle; /* time since last NP packet sent */
166 time_t recv_idle; /* time since last NP packet received */
177 #endif /* _PPP_DEFS_H_ */