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/*      $Id: if_ppp.h,v 1.1 2004-01-28 15:25:35 giacomo Exp $   */
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/*
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 * if_ppp.h - Point-to-Point 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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 */
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/*
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 *  ==FILEVERSION 20000724==
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 *
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 *  NOTE TO MAINTAINERS:
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 *     If you modify this file at all, please set the above date.
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 *     if_ppp.h is shipped with a PPP distribution as well as with the kernel;
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 *     if everyone increases the FILEVERSION number above, then scripts
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 *     can do the right thing when deciding whether to install a new if_ppp.h
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 *     file.  Don't change the format of that line otherwise, so the
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 *     installation script can recognize it.
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 */
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#ifndef _IF_PPP_H_
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#define _IF_PPP_H_
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/*
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 * Packet sizes
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 */
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#define PPP_MTU         1500    /* Default MTU (size of Info field) */
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#define PPP_MAXMRU      65000   /* Largest MRU we allow */
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#define PROTO_IPX       0x002b  /* protocol numbers */
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#define PROTO_DNA_RT    0x0027  /* DNA Routing */
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/*
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 * Bit definitions for flags.
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 */
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#define SC_COMP_PROT    0x00000001      /* protocol compression (output) */
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#define SC_COMP_AC      0x00000002      /* header compression (output) */
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#define SC_COMP_TCP     0x00000004      /* TCP (VJ) compression (output) */
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#define SC_NO_TCP_CCID  0x00000008      /* disable VJ connection-id comp. */
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#define SC_REJ_COMP_AC  0x00000010      /* reject adrs/ctrl comp. on input */
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#define SC_REJ_COMP_TCP 0x00000020      /* reject TCP (VJ) comp. on input */
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#define SC_CCP_OPEN     0x00000040      /* Look at CCP packets */
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#define SC_CCP_UP       0x00000080      /* May send/recv compressed packets */
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#define SC_ENABLE_IP    0x00000100      /* IP packets may be exchanged */
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#define SC_LOOP_TRAFFIC 0x00000200      /* send traffic to pppd */
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#define SC_MULTILINK    0x00000400      /* do multilink encapsulation */
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#define SC_MP_SHORTSEQ  0x00000800      /* use short MP sequence numbers */
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#define SC_COMP_RUN     0x00001000      /* compressor has been inited */
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#define SC_DECOMP_RUN   0x00002000      /* decompressor has been inited */
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#define SC_MP_XSHORTSEQ 0x00004000      /* transmit short MP seq numbers */
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#define SC_DEBUG        0x00010000      /* enable debug messages */
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#define SC_LOG_INPKT    0x00020000      /* log contents of good pkts recvd */
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#define SC_LOG_OUTPKT   0x00040000      /* log contents of pkts sent */
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#define SC_LOG_RAWIN    0x00080000      /* log all chars received */
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#define SC_LOG_FLUSH    0x00100000      /* log all chars flushed */
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#define SC_SYNC         0x00200000      /* synchronous serial mode */
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#define SC_MASK         0x0f200fff      /* bits that user can change */
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/* state bits */
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#define SC_XMIT_BUSY    0x10000000      /* (used by isdn_ppp?) */
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#define SC_RCV_ODDP     0x08000000      /* have rcvd char with odd parity */
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#define SC_RCV_EVNP     0x04000000      /* have rcvd char with even parity */
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#define SC_RCV_B7_1     0x02000000      /* have rcvd char with bit 7 = 1 */
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#define SC_RCV_B7_0     0x01000000      /* have rcvd char with bit 7 = 0 */
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#define SC_DC_FERROR    0x00800000      /* fatal decomp error detected */
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#define SC_DC_ERROR     0x00400000      /* non-fatal decomp error detected */
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/*
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 * Ioctl definitions.
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 */
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struct npioctl {
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        int             protocol;       /* PPP protocol, e.g. PPP_IP */
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        enum NPmode     mode;
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};
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/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
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struct ppp_option_data {
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        __u8    *ptr;
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        __u32   length;
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        int     transmit;
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};
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struct ifpppstatsreq {
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        struct ifreq     b;
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        struct ppp_stats stats;                 /* statistic information */
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};
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struct ifpppcstatsreq {
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        struct ifreq          b;
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        struct ppp_comp_stats stats;
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};
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#define ifr__name       b.ifr_ifrn.ifrn_name
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#define stats_ptr       b.ifr_ifru.ifru_data
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/*
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 * Ioctl definitions.
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 */
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#define PPPIOCGFLAGS    _IOR('t', 90, int)      /* get configuration flags */
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#define PPPIOCSFLAGS    _IOW('t', 89, int)      /* set configuration flags */
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#define PPPIOCGASYNCMAP _IOR('t', 88, int)      /* get async map */
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#define PPPIOCSASYNCMAP _IOW('t', 87, int)      /* set async map */
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#define PPPIOCGUNIT     _IOR('t', 86, int)      /* get ppp unit number */
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#define PPPIOCGRASYNCMAP _IOR('t', 85, int)     /* get receive async map */
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#define PPPIOCSRASYNCMAP _IOW('t', 84, int)     /* set receive async map */
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#define PPPIOCGMRU      _IOR('t', 83, int)      /* get max receive unit */
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#define PPPIOCSMRU      _IOW('t', 82, int)      /* set max receive unit */
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#define PPPIOCSMAXCID   _IOW('t', 81, int)      /* set VJ max slot ID */
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#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */
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#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */
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#define PPPIOCXFERUNIT  _IO('t', 78)            /* transfer PPP unit */
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#define PPPIOCSCOMPRESS _IOW('t', 77, struct ppp_option_data)
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#define PPPIOCGNPMODE   _IOWR('t', 76, struct npioctl) /* get NP mode */
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#define PPPIOCSNPMODE   _IOW('t', 75, struct npioctl)  /* set NP mode */
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#define PPPIOCSPASS     _IOW('t', 71, struct sock_fprog) /* set pass filter */
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#define PPPIOCSACTIVE   _IOW('t', 70, struct sock_fprog) /* set active filt */
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#define PPPIOCGDEBUG    _IOR('t', 65, int)      /* Read debug level */
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#define PPPIOCSDEBUG    _IOW('t', 64, int)      /* Set debug level */
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#define PPPIOCGIDLE     _IOR('t', 63, struct ppp_idle) /* get idle time */
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#define PPPIOCNEWUNIT   _IOWR('t', 62, int)     /* create new ppp unit */
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#define PPPIOCATTACH    _IOW('t', 61, int)      /* attach to ppp unit */
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#define PPPIOCDETACH    _IOW('t', 60, int)      /* detach from ppp unit/chan */
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#define PPPIOCSMRRU     _IOW('t', 59, int)      /* set multilink MRU */
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#define PPPIOCCONNECT   _IOW('t', 58, int)      /* connect channel to unit */
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#define PPPIOCDISCONN   _IO('t', 57)            /* disconnect channel */
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#define PPPIOCATTCHAN   _IOW('t', 56, int)      /* attach to ppp channel */
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#define PPPIOCGCHAN     _IOR('t', 55, int)      /* get ppp channel number */
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#define SIOCGPPPSTATS   (SIOCDEVPRIVATE + 0)
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#define SIOCGPPPVER     (SIOCDEVPRIVATE + 1)    /* NEVER change this!! */
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#define SIOCGPPPCSTATS  (SIOCDEVPRIVATE + 2)
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#if !defined(ifr_mtu)
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#define ifr_mtu ifr_ifru.ifru_metric
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#endif
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#endif /* _IF_PPP_H_ */