netbsd-1.1/if_pppvar.h

   1 /*      $Id: if_pppvar.h,v 1.6 2002/12/06 12:03:44 paulus Exp $ */
   2
   3 /*
   4  * if_pppvar.h - private structures and declarations for PPP.
   5  *
   6  * Copyright (c) 1994 Paul Mackerras. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. The name(s) of the authors of this software must not be used to
  21  *    endorse or promote products derived from this software without
  22  *    prior written permission.
  23  *
  24  * 4. Redistributions of any form whatsoever must retain the following
  25  *    acknowledgment:
  26  *    "This product includes software developed by Paul Mackerras
  27  *     <paulus@samba.org>".
  28  *
  29  * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
  30  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  31  * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  32  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  33  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  34  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  35  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  36  *
  37  * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  *
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  *
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *
  51  * 3. The name "Carnegie Mellon University" must not be used to
  52  *    endorse or promote products derived from this software without
  53  *    prior written permission. For permission or any legal
  54  *    details, please contact
  55  *      Office of Technology Transfer
  56  *      Carnegie Mellon University
  57  *      5000 Forbes Avenue
  58  *      Pittsburgh, PA  15213-3890
  59  *      (412) 268-4387, fax: (412) 268-7395
  60  *      tech-transfer@andrew.cmu.edu
  61  *
  62  * 4. Redistributions of any form whatsoever must retain the following
  63  *    acknowledgment:
  64  *    "This product includes software developed by Computing Services
  65  *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
  66  *
  67  * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
  68  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  69  * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
  70  * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  71  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  72  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  73  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  74  */
  75
  76 /*
  77  * Supported network protocols.  These values are used for
  78  * indexing sc_npmode.
  79  */
  80 #define NP_IP   0               /* Internet Protocol */
  81 #define NUM_NP  1               /* Number of NPs. */
  82
  83 /*
  84  * Structure describing each ppp unit.
  85  */
  86 struct ppp_softc {
  87         struct  ifnet sc_if;            /* network-visible interface */
  88         u_int   sc_flags;               /* control/status bits; see if_ppp.h */
  89         void    *sc_devp;               /* pointer to device-dep structure */
  90         void    (*sc_start) __P((struct ppp_softc *));  /* start output proc */
  91         void    (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
  92         void    (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
  93         u_int16_t sc_mru;               /* max receive unit */
  94         pid_t   sc_xfer;                /* used in transferring unit */
  95         struct  ifqueue sc_rawq;        /* received packets */
  96         struct  ifqueue sc_inq;         /* queue of input packets for daemon */
  97         struct  ifqueue sc_fastq;       /* interactive output packet q */
  98         struct  mbuf *sc_togo;          /* output packet ready to go */
  99         struct  mbuf *sc_npqueue;       /* output packets not to be sent yet */
 100         struct  mbuf **sc_npqtail;      /* ptr to last next ptr in npqueue */
 101         struct  pppstat sc_stats;       /* count of bytes/pkts sent/rcvd */
 102         caddr_t sc_bpf;                 /* hook for BPF */
 103         enum    NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
 104         struct  compressor *sc_xcomp;   /* transmit compressor */
 105         void    *sc_xc_state;           /* transmit compressor state */
 106         struct  compressor *sc_rcomp;   /* receive decompressor */
 107         void    *sc_rc_state;           /* receive decompressor state */
 108         time_t  sc_last_sent;           /* time (secs) last NP pkt sent */
 109         time_t  sc_last_recv;           /* time (secs) last NP pkt rcvd */
 110 #ifdef PPP_FILTER
 111         struct  bpf_program sc_pass_filt;   /* filter for packets to pass */
 112         struct  bpf_program sc_active_filt; /* filter for "non-idle" packets */
 113 #endif /* PPP_FILTER */
 114 #ifdef  VJC
 115         struct  slcompress *sc_comp;    /* vjc control buffer */
 116 #endif
 117
 118         /* Device-dependent part for async lines. */
 119         ext_accm sc_asyncmap;           /* async control character map */
 120         u_int32_t sc_rasyncmap;         /* receive async control char map */
 121         struct  mbuf *sc_outm;          /* mbuf chain currently being output */
 122         struct  mbuf *sc_m;             /* pointer to input mbuf chain */
 123         struct  mbuf *sc_mc;            /* pointer to current input mbuf */
 124         char    *sc_mp;                 /* ptr to next char in input mbuf */
 125         u_int16_t sc_ilen;              /* length of input packet so far */
 126         u_int16_t sc_fcs;               /* FCS so far (input) */
 127         u_int16_t sc_outfcs;            /* FCS so far for output packet */
 128         u_char  sc_rawin[16];           /* chars as received */
 129         int     sc_rawin_count;         /* # in sc_rawin */
 130 };
 131
 132 #ifdef _KERNEL
 133 struct  ppp_softc ppp_softc[NPPP];
 134
 135 struct  ppp_softc *pppalloc __P((pid_t pid));
 136 void    pppdealloc __P((struct ppp_softc *sc));
 137 int     pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data,
 138                       int flag, struct proc *p));
 139 void    ppp_restart __P((struct ppp_softc *sc));
 140 void    ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
 141 struct  mbuf *ppp_dequeue __P((struct ppp_softc *sc));
 142 int     pppoutput __P((struct ifnet *, struct mbuf *,
 143                        struct sockaddr *, struct rtentry *));
 144 #endif /* _KERNEL */