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jeremybenn |
/*****************************************************************************
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* lcp.h - Network Link Control Protocol header file.
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*
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* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
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* portions Copyright (c) 1997 Global Election Systems Inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice and the following disclaimer are included verbatim in any
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* distributions. No written agreement, license, or royalty fee is required
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* for any of the authorized uses.
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*
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* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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* REVISION HISTORY
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*
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* 03-01-01 Marc Boucher <marc@mbsi.ca>
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* Ported to lwIP.
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* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
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* Original derived from BSD codes.
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*****************************************************************************/
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/*
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* lcp.h - Link Control Protocol definitions.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: lcp.h 2 2011-07-17 20:13:17Z filepang@gmail.com $
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*/
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#ifndef LCP_H
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#define LCP_H
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/*************************
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*** PUBLIC DEFINITIONS ***
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*************************/
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/*
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* Options.
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*/
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#define CI_MRU 1 /* Maximum Receive Unit */
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#define CI_ASYNCMAP 2 /* Async Control Character Map */
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#define CI_AUTHTYPE 3 /* Authentication Type */
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#define CI_QUALITY 4 /* Quality Protocol */
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#define CI_MAGICNUMBER 5 /* Magic Number */
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#define CI_PCOMPRESSION 7 /* Protocol Field Compression */
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#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */
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#define CI_CALLBACK 13 /* callback */
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#define CI_MRRU 17 /* max reconstructed receive unit; multilink */
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#define CI_SSNHF 18 /* short sequence numbers for multilink */
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#define CI_EPDISC 19 /* endpoint discriminator */
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/*
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* LCP-specific packet types.
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*/
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#define PROTREJ 8 /* Protocol Reject */
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#define ECHOREQ 9 /* Echo Request */
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#define ECHOREP 10 /* Echo Reply */
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#define DISCREQ 11 /* Discard Request */
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#define CBCP_OPT 6 /* Use callback control protocol */
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/************************
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*** PUBLIC DATA TYPES ***
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************************/
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/*
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* The state of options is described by an lcp_options structure.
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*/
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typedef struct lcp_options {
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u_int passive : 1; /* Don't die if we don't get a response */
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u_int silent : 1; /* Wait for the other end to start first */
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u_int restart : 1; /* Restart vs. exit after close */
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u_int neg_mru : 1; /* Negotiate the MRU? */
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u_int neg_asyncmap : 1; /* Negotiate the async map? */
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u_int neg_upap : 1; /* Ask for UPAP authentication? */
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u_int neg_chap : 1; /* Ask for CHAP authentication? */
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u_int neg_magicnumber : 1; /* Ask for magic number? */
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u_int neg_pcompression : 1; /* HDLC Protocol Field Compression? */
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u_int neg_accompression : 1; /* HDLC Address/Control Field Compression? */
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u_int neg_lqr : 1; /* Negotiate use of Link Quality Reports */
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u_int neg_cbcp : 1; /* Negotiate use of CBCP */
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#ifdef PPP_MULTILINK
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u_int neg_mrru : 1; /* Negotiate multilink MRRU */
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u_int neg_ssnhf : 1; /* Negotiate short sequence numbers */
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u_int neg_endpoint : 1; /* Negotiate endpoint discriminator */
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#endif
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u_short mru; /* Value of MRU */
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#ifdef PPP_MULTILINK
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u_short mrru; /* Value of MRRU, and multilink enable */
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#endif
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u_char chap_mdtype; /* which MD type (hashing algorithm) */
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u32_t asyncmap; /* Value of async map */
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u32_t magicnumber;
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int numloops; /* Number of loops during magic number neg. */
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u32_t lqr_period; /* Reporting period for LQR 1/100ths second */
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#ifdef PPP_MULTILINK
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struct epdisc endpoint; /* endpoint discriminator */
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#endif
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} lcp_options;
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/*
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* Values for phase from BSD pppd.h based on RFC 1661.
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*/
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typedef enum {
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PHASE_DEAD = 0,
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PHASE_INITIALIZE,
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PHASE_ESTABLISH,
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PHASE_AUTHENTICATE,
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PHASE_CALLBACK,
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PHASE_NETWORK,
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PHASE_TERMINATE
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} LinkPhase;
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/*****************************
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*** PUBLIC DATA STRUCTURES ***
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*****************************/
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extern LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
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extern lcp_options lcp_wantoptions[];
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extern lcp_options lcp_gotoptions[];
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extern lcp_options lcp_allowoptions[];
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extern lcp_options lcp_hisoptions[];
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extern ext_accm xmit_accm[];
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/***********************
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*** PUBLIC FUNCTIONS ***
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***********************/
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void lcp_init (int);
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void lcp_open (int);
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void lcp_close (int, char *);
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void lcp_lowerup (int);
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void lcp_lowerdown(int);
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void lcp_sprotrej (int, u_char *, int); /* send protocol reject */
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extern struct protent lcp_protent;
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/* Default number of times we receive our magic number from the peer
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before deciding the link is looped-back. */
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#define DEFLOOPBACKFAIL 10
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#endif /* LCP_H */
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