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Dependencies:   mbed

NetServices/lwip/netif/ppp/lcp.h@0:8cdad1c73e8e, 2012-03-25 (annotated)

Committer:
bfictorie
Date:
Sun Mar 25 17:26:30 2012 +0000
Revision:
0:8cdad1c73e8e

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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/*****************************************************************************





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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,v 1.4 2010/01/18 20:49:43 goldsimon Exp $





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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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 * 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 (code numbers).





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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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 * 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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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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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 */