Keil Studio Cloud
Mistake on this page?
Report an issue in GitHub or email us
lcp.h
1 /*
2  * lcp.h - Link Control Protocol definitions.
3  *
4  * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The name "Carnegie Mellon University" must not be used to
19  * endorse or promote products derived from this software without
20  * prior written permission. For permission or any legal
21  * details, please contact
22  * Office of Technology Transfer
23  * Carnegie Mellon University
24  * 5000 Forbes Avenue
25  * Pittsburgh, PA 15213-3890
26  * (412) 268-4387, fax: (412) 268-7395
27  * tech-transfer@andrew.cmu.edu
28  *
29  * 4. Redistributions of any form whatsoever must retain the following
30  * acknowledgment:
31  * "This product includes software developed by Computing Services
32  * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
33  *
34  * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
35  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
36  * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
37  * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
38  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
39  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
40  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
41  *
42  * $Id: lcp.h,v 1.20 2004/11/14 22:53:42 carlsonj Exp $
43  */
44 
45 #include "ppp_opts.h"
46 #if PPP_SUPPORT /* don't build if not configured for use in ppp_opts.h */
47 
48 #ifndef LCP_H
49 #define LCP_H
50 
51 #include "ppp.h"
52 
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56 
57 /*
58  * Options.
59  */
60 #define CI_VENDOR 0 /* Vendor Specific */
61 #define CI_MRU 1 /* Maximum Receive Unit */
62 #define CI_ASYNCMAP 2 /* Async Control Character Map */
63 #define CI_AUTHTYPE 3 /* Authentication Type */
64 #define CI_QUALITY 4 /* Quality Protocol */
65 #define CI_MAGICNUMBER 5 /* Magic Number */
66 #define CI_PCOMPRESSION 7 /* Protocol Field Compression */
67 #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */
68 #define CI_FCSALTERN 9 /* FCS-Alternatives */
69 #define CI_SDP 10 /* Self-Describing-Pad */
70 #define CI_NUMBERED 11 /* Numbered-Mode */
71 #define CI_CALLBACK 13 /* callback */
72 #define CI_MRRU 17 /* max reconstructed receive unit; multilink */
73 #define CI_SSNHF 18 /* short sequence numbers for multilink */
74 #define CI_EPDISC 19 /* endpoint discriminator */
75 #define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */
76 #define CI_LDISC 23 /* Link-Discriminator */
77 #define CI_LCPAUTH 24 /* LCP Authentication */
78 #define CI_COBS 25 /* Consistent Overhead Byte Stuffing */
79 #define CI_PREFELIS 26 /* Prefix Elision */
80 #define CI_MPHDRFMT 27 /* MP Header Format */
81 #define CI_I18N 28 /* Internationalization */
82 #define CI_SDL 29 /* Simple Data Link */
83 
84 /*
85  * LCP-specific packet types (code numbers).
86  */
87 #define PROTREJ 8 /* Protocol Reject */
88 #define ECHOREQ 9 /* Echo Request */
89 #define ECHOREP 10 /* Echo Reply */
90 #define DISCREQ 11 /* Discard Request */
91 #define IDENTIF 12 /* Identification */
92 #define TIMEREM 13 /* Time Remaining */
93 
94 /* Value used as data for CI_CALLBACK option */
95 #define CBCP_OPT 6 /* Use callback control protocol */
96 
97 #if 0 /* moved to ppp_opts.h */
98 #define DEFMRU 1500 /* Try for this */
99 #define MINMRU 128 /* No MRUs below this */
100 #define MAXMRU 16384 /* Normally limit MRU to this */
101 #endif /* moved to ppp_opts.h */
102 
103 /* An endpoint discriminator, used with multilink. */
104 #define MAX_ENDP_LEN 20 /* maximum length of discriminator value */
105 struct epdisc {
106  unsigned char class_; /* -- The word "class" is reserved in C++. */
107  unsigned char length;
108  unsigned char value[MAX_ENDP_LEN];
109 };
110 
111 /*
112  * The state of options is described by an lcp_options structure.
113  */
114 typedef struct lcp_options {
115  unsigned int passive :1; /* Don't die if we don't get a response */
116  unsigned int silent :1; /* Wait for the other end to start first */
117 #if 0 /* UNUSED */
118  unsigned int restart :1; /* Restart vs. exit after close */
119 #endif /* UNUSED */
120  unsigned int neg_mru :1; /* Negotiate the MRU? */
121  unsigned int neg_asyncmap :1; /* Negotiate the async map? */
122 #if PAP_SUPPORT
123  unsigned int neg_upap :1; /* Ask for UPAP authentication? */
124 #endif /* PAP_SUPPORT */
125 #if CHAP_SUPPORT
126  unsigned int neg_chap :1; /* Ask for CHAP authentication? */
127 #endif /* CHAP_SUPPORT */
128 #if EAP_SUPPORT
129  unsigned int neg_eap :1; /* Ask for EAP authentication? */
130 #endif /* EAP_SUPPORT */
131  unsigned int neg_magicnumber :1; /* Ask for magic number? */
132  unsigned int neg_pcompression :1; /* HDLC Protocol Field Compression? */
133  unsigned int neg_accompression :1; /* HDLC Address/Control Field Compression? */
134 #if LQR_SUPPORT
135  unsigned int neg_lqr :1; /* Negotiate use of Link Quality Reports */
136 #endif /* LQR_SUPPORT */
137  unsigned int neg_cbcp :1; /* Negotiate use of CBCP */
138 #ifdef HAVE_MULTILINK
139  unsigned int neg_mrru :1; /* negotiate multilink MRRU */
140 #endif /* HAVE_MULTILINK */
141  unsigned int neg_ssnhf :1; /* negotiate short sequence numbers */
142  unsigned int neg_endpoint :1; /* negotiate endpoint discriminator */
143 
144  u16_t mru; /* Value of MRU */
145 #ifdef HAVE_MULTILINK
146  u16_t mrru; /* Value of MRRU, and multilink enable */
147 #endif /* MULTILINK */
148 #if CHAP_SUPPORT
149  u8_t chap_mdtype; /* which MD types (hashing algorithm) */
150 #endif /* CHAP_SUPPORT */
151  u32_t asyncmap; /* Value of async map */
152  u32_t magicnumber;
153  u8_t numloops; /* Number of loops during magic number neg. */
154 #if LQR_SUPPORT
155  u32_t lqr_period; /* Reporting period for LQR 1/100ths second */
156 #endif /* LQR_SUPPORT */
157  struct epdisc endpoint; /* endpoint discriminator */
158 } lcp_options;
159 
160 void lcp_open(ppp_pcb *pcb);
161 void lcp_close(ppp_pcb *pcb, const char *reason);
162 void lcp_lowerup(ppp_pcb *pcb);
163 void lcp_lowerdown(ppp_pcb *pcb);
164 void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len); /* send protocol reject */
165 
166 extern const struct protent lcp_protent;
167 
168 #if 0 /* moved to ppp_opts.h */
169 /* Default number of times we receive our magic number from the peer
170  before deciding the link is looped-back. */
171 #define DEFLOOPBACKFAIL 10
172 #endif /* moved to ppp_opts.h */
173 
174 #ifdef __cplusplus
175 }
176 #endif
177 
178 #endif /* LCP_H */
179 #endif /* PPP_SUPPORT */
Important Information for this Arm website

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies. If you are not happy with the use of these cookies, please review our Cookie Policy to learn how they can be disabled. By disabling cookies, some features of the site will not work.