netbsd-1.1/if_pppvar.h

   1 /*      $Id: if_pppvar.h,v 1.4 1997/04/30 05:47:02 paulus Exp $ */
   2
   3 /*
   4  * if_pppvar.h - private structures and declarations for PPP.
   5  *
   6  * Copyright (c) 1994 The Australian National University.
   7  * All rights reserved.
   8  *
   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
  14  * any purpose.
  15  *
  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
  20  * OF SUCH DAMAGE.
  21  *
  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,
  27  * OR MODIFICATIONS.
  28  *
  29  * Copyright (c) 1989 Carnegie Mellon University.
  30  * All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms are permitted
  33  * provided that the above copyright notice and this paragraph are
  34  * duplicated in all such forms and that any documentation,
  35  * advertising materials, and other materials related to such
  36  * distribution and use acknowledge that the software was developed
  37  * by Carnegie Mellon University.  The name of the
  38  * University may not be used to endorse or promote products derived
  39  * from this software without specific prior written permission.
  40  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  41  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  42  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  43  */
  44
  45 /*
  46  * Supported network protocols.  These values are used for
  47  * indexing sc_npmode.
  48  */
  49 #define NP_IP   0               /* Internet Protocol */
  50 #define NUM_NP  1               /* Number of NPs. */
  51
  52 /*
  53  * Structure describing each ppp unit.
  54  */
  55 struct ppp_softc {
  56         struct  ifnet sc_if;            /* network-visible interface */
  57         u_int   sc_flags;               /* control/status bits; see if_ppp.h */
  58         void    *sc_devp;               /* pointer to device-dep structure */
  59         void    (*sc_start) __P((struct ppp_softc *));  /* start output proc */
  60         void    (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
  61         void    (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
  62         u_int16_t sc_mru;               /* max receive unit */
  63         pid_t   sc_xfer;                /* used in transferring unit */
  64         struct  ifqueue sc_rawq;        /* received packets */
  65         struct  ifqueue sc_inq;         /* queue of input packets for daemon */
  66         struct  ifqueue sc_fastq;       /* interactive output packet q */
  67         struct  mbuf *sc_togo;          /* output packet ready to go */
  68         struct  mbuf *sc_npqueue;       /* output packets not to be sent yet */
  69         struct  mbuf **sc_npqtail;      /* ptr to last next ptr in npqueue */
  70         struct  pppstat sc_stats;       /* count of bytes/pkts sent/rcvd */
  71         caddr_t sc_bpf;                 /* hook for BPF */
  72         enum    NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
  73         struct  compressor *sc_xcomp;   /* transmit compressor */
  74         void    *sc_xc_state;           /* transmit compressor state */
  75         struct  compressor *sc_rcomp;   /* receive decompressor */
  76         void    *sc_rc_state;           /* receive decompressor state */
  77         time_t  sc_last_sent;           /* time (secs) last NP pkt sent */
  78         time_t  sc_last_recv;           /* time (secs) last NP pkt rcvd */
  79 #ifdef PPP_FILTER
  80         struct  bpf_program sc_pass_filt;   /* filter for packets to pass */
  81         struct  bpf_program sc_active_filt; /* filter for "non-idle" packets */
  82 #endif /* PPP_FILTER */
  83 #ifdef  VJC
  84         struct  slcompress *sc_comp;    /* vjc control buffer */
  85 #endif
  86
  87         /* Device-dependent part for async lines. */
  88         ext_accm sc_asyncmap;           /* async control character map */
  89         u_int32_t sc_rasyncmap;         /* receive async control char map */
  90         struct  mbuf *sc_outm;          /* mbuf chain currently being output */
  91         struct  mbuf *sc_m;             /* pointer to input mbuf chain */
  92         struct  mbuf *sc_mc;            /* pointer to current input mbuf */
  93         char    *sc_mp;                 /* ptr to next char in input mbuf */
  94         u_int16_t sc_ilen;              /* length of input packet so far */
  95         u_int16_t sc_fcs;               /* FCS so far (input) */
  96         u_int16_t sc_outfcs;            /* FCS so far for output packet */
  97         u_char  sc_rawin[16];           /* chars as received */
  98         int     sc_rawin_count;         /* # in sc_rawin */
  99 };
 100
 101 #ifdef _KERNEL
 102 struct  ppp_softc ppp_softc[NPPP];
 103
 104 struct  ppp_softc *pppalloc __P((pid_t pid));
 105 void    pppdealloc __P((struct ppp_softc *sc));
 106 int     pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data,
 107                       int flag, struct proc *p));
 108 void    ppp_restart __P((struct ppp_softc *sc));
 109 void    ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
 110 struct  mbuf *ppp_dequeue __P((struct ppp_softc *sc));
 111 int     pppoutput __P((struct ifnet *, struct mbuf *,
 112                        struct sockaddr *, struct rtentry *));
 113 #endif /* _KERNEL */