sys/net/if_pppvar.h

   1 /*      $NetBSD: if_pppvar.h,v 1.26 2007/07/14 21:02:41 ad Exp $        */
   2 /*      Id: if_pppvar.h,v 1.3 1996/07/01 01:04:37 paulus Exp     */
   3
   4 /*
   5  * if_pppvar.h - private structures and declarations for PPP.
   6  *
   7  * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. The name(s) of the authors of this software must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission.
  24  *
  25  * 4. Redistributions of any form whatsoever must retain the following
  26  *    acknowledgment:
  27  *    "This product includes software developed by Paul Mackerras
  28  *     <paulus@samba.org>".
  29  *
  30  * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
  31  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  32  * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  33  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  34  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  35  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  36  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  37  *
  38  * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in
  49  *    the documentation and/or other materials provided with the
  50  *    distribution.
  51  *
  52  * 3. The name "Carnegie Mellon University" must not be used to
  53  *    endorse or promote products derived from this software without
  54  *    prior written permission. For permission or any legal
  55  *    details, please contact
  56  *      Office of Technology Transfer
  57  *      Carnegie Mellon University
  58  *      5000 Forbes Avenue
  59  *      Pittsburgh, PA  15213-3890
  60  *      (412) 268-4387, fax: (412) 268-7395
  61  *      tech-transfer@andrew.cmu.edu
  62  *
  63  * 4. Redistributions of any form whatsoever must retain the following
  64  *    acknowledgment:
  65  *    "This product includes software developed by Computing Services
  66  *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
  67  *
  68  * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
  69  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  70  * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
  71  * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  72  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  73  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  74  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  75  */
  76
  77 #ifndef _NET_IF_PPPVAR_H_
  78 #define _NET_IF_PPPVAR_H_
  79
  80 #include <sys/callout.h>
  81
  82 /*
  83  * Supported network protocols.  These values are used for
  84  * indexing sc_npmode.
  85  */
  86 #define NP_IP   0               /* Internet Protocol */
  87 #define NP_IPV6 1               /* Internet Protocol version 6 */
  88 #define NUM_NP  2               /* Number of NPs. */
  89
  90 /*
  91  * Structure describing each ppp unit.
  92  */
  93 struct ppp_softc {
  94         struct  ifnet sc_if;            /* network-visible interface */
  95         int     sc_unit;                /* XXX unit number */
  96         u_int   sc_flags;               /* control/status bits; see if_ppp.h */
  97         void    *sc_devp;               /* pointer to device-dep structure */
  98         void    (*sc_start)(struct ppp_softc *);        /* start output proc */
  99         void    (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
 100         void    (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
 101         struct  callout sc_timo_ch;     /* timeout callout */
 102         uint16_t sc_mru;                /* max receive unit */
 103         pid_t   sc_xfer;                /* used in transferring unit */
 104         struct  ifqueue sc_rawq;        /* received packets */
 105         struct  ifqueue sc_inq;         /* queue of input packets for daemon */
 106         struct  ifqueue sc_fastq;       /* interactive output packet q */
 107         struct  mbuf *sc_togo;          /* output packet ready to go */
 108         struct  mbuf *sc_npqueue;       /* output packets not to be sent yet */
 109         struct  mbuf **sc_npqtail;      /* ptr to last next ptr in npqueue */
 110         struct  pppstat sc_stats;       /* count of bytes/pkts sent/rcvd */
 111         enum    NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
 112         struct  compressor *sc_xcomp;   /* transmit compressor */
 113         void    *sc_xc_state;           /* transmit compressor state */
 114         struct  compressor *sc_rcomp;   /* receive decompressor */
 115         void    *sc_rc_state;           /* receive decompressor state */
 116         time_t  sc_last_sent;           /* time (secs) last NP pkt sent */
 117         time_t  sc_last_recv;           /* time (secs) last NP pkt rcvd */
 118         void    *sc_si;                 /* software interrupt handle */
 119 #ifdef PPP_FILTER
 120         /* Filter for packets to pass. */
 121         struct  bpf_program sc_pass_filt_in;
 122         struct  bpf_program sc_pass_filt_out;
 123
 124         /* Filter for "non-idle" packets. */
 125         struct  bpf_program sc_active_filt_in;
 126         struct  bpf_program sc_active_filt_out;
 127 #endif /* PPP_FILTER */
 128 #ifdef  VJC
 129         struct  slcompress *sc_comp;    /* vjc control buffer */
 130 #endif
 131
 132         /* Device-dependent part for async lines. */
 133         ext_accm sc_asyncmap;           /* async control character map */
 134         uint32_t sc_rasyncmap;          /* receive async control char map */
 135         struct  mbuf *sc_outm;          /* mbuf chain currently being output */
 136         struct  mbuf *sc_m;             /* pointer to input mbuf chain */
 137         struct  mbuf *sc_mc;            /* pointer to current input mbuf */
 138         char    *sc_mp;                 /* ptr to next char in input mbuf */
 139         uint16_t sc_ilen;               /* length of input packet so far */
 140         uint16_t sc_fcs;                /* FCS so far (input) */
 141         uint16_t sc_outfcs;             /* FCS so far for output packet */
 142         uint16_t sc_maxfastq;           /* Maximum number of packets that
 143                                          * can be received back-to-back in
 144                                          * the high priority queue */
 145         uint8_t sc_nfastq;              /* Number of packets received
 146                                          * back-to-back in the high priority
 147                                          * queue */
 148         u_char sc_rawin_start;          /* current char start */
 149         struct ppp_rawin sc_rawin;      /* chars as received */
 150         LIST_ENTRY(ppp_softc) sc_iflist;
 151 };
 152
 153 #ifdef _KERNEL
 154
 155 struct  ppp_softc *pppalloc(pid_t);
 156 void    pppdealloc(struct ppp_softc *);
 157 int     pppioctl(struct ppp_softc *, u_long, void *, int, struct lwp *);
 158 void    ppp_restart(struct ppp_softc *);
 159 void    ppppktin(struct ppp_softc *, struct mbuf *, int);
 160 struct  mbuf *ppp_dequeue(struct ppp_softc *);
 161 int     pppoutput(struct ifnet *, struct mbuf *, const struct sockaddr *,
 162             struct rtentry *);
 163 #endif /* _KERNEL */
 164
 165 #endif /* !_NET_IF_PPPVAR_H_ */