bsd/net/if_pppvar.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * if_pppvar.h - private structures and declarations for PPP.
  25  *
  26  * Copyright (c) 1994 The Australian National University.
  27  * All rights reserved.
  28  *
  29  * Permission to use, copy, modify, and distribute this software and its
  30  * documentation is hereby granted, provided that the above copyright
  31  * notice appears in all copies.  This software is provided without any
  32  * warranty, express or implied. The Australian National University
  33  * makes no representations about the suitability of this software for
  34  * any purpose.
  35  *
  36  * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
  37  * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  38  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
  39  * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
  40  * OF SUCH DAMAGE.
  41  *
  42  * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
  43  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  44  * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  45  * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
  46  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  47  * OR MODIFICATIONS.
  48  *
  49  * Copyright (c) 1989 Carnegie Mellon University.
  50  * All rights reserved.
  51  *
  52  * Redistribution and use in source and binary forms are permitted
  53  * provided that the above copyright notice and this paragraph are
  54  * duplicated in all such forms and that any documentation,
  55  * advertising materials, and other materials related to such
  56  * distribution and use acknowledge that the software was developed
  57  * by Carnegie Mellon University.  The name of the
  58  * University may not be used to endorse or promote products derived
  59  * from this software without specific prior written permission.
  60  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  61  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  62  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  63  *
  64  * $FreeBSD: src/sys/net/if_pppvar.h,v 1.15 2000/01/29 16:56:23 peter Exp $
  65  */
  66
  67 #include <sys/appleapiopts.h>
  68 #ifndef DONT_WARN_OBSOLETE
  69 #warning if_pppvar.h is not used by the darwin kernel
  70 #endif
  71
  72 #ifdef KERNEL_PRIVATE
  73
  74 /*
  75  * Supported network protocols.  These values are used for
  76  * indexing sc_npmode.
  77  */
  78 #define NP_IP   0               /* Internet Protocol */
  79 #define NUM_NP  1               /* Number of NPs. */
  80
  81 /*
  82  * Structure describing each ppp unit.
  83  */
  84 struct ppp_softc {
  85         struct  ifnet sc_if;            /* network-visible interface */
  86 /*hi*/  u_int   sc_flags;               /* control/status bits; see if_ppp.h */
  87         struct  callout_handle sc_ch;   /* Used for scheduling timeouts */
  88         void    *sc_devp;               /* pointer to device-dep structure */
  89         void    (*sc_start)(struct ppp_softc *);        /* start output proc */
  90         void    (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
  91         void    (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
  92         void    (*sc_setmtu)(struct ppp_softc *); /* set mtu */
  93         short   sc_mru;                 /* max receive unit */
  94         pid_t   sc_xfer;                /* used in transferring unit */
  95 /*hi*/  struct  ifqueue sc_rawq;        /* received packets */
  96 /*net*/ struct  ifqueue sc_inq;         /* queue of input packets for daemon */
  97 /*net*/ struct  ifqueue sc_fastq;       /* interactive output packet q */
  98         struct  mbuf *sc_npqueue;       /* output packets not to be sent yet */
  99         struct  mbuf **sc_npqtail;      /* ptr to last next ptr in npqueue */
 100         struct  pppstat sc_stats;       /* count of bytes/pkts sent/rcvd */
 101         enum    NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
 102         struct  compressor *sc_xcomp;   /* transmit compressor */
 103         void    *sc_xc_state;           /* transmit compressor state */
 104         struct  compressor *sc_rcomp;   /* receive decompressor */
 105         void    *sc_rc_state;           /* receive decompressor state */
 106         time_t  sc_last_sent;           /* time (secs) last NP pkt sent */
 107         time_t  sc_last_recv;           /* time (secs) last NP pkt rcvd */
 108 #if PPP_FILTER
 109         struct  bpf_program sc_pass_filt;   /* filter for packets to pass */
 110         struct  bpf_program sc_active_filt; /* filter for "non-idle" packets */
 111 #endif /* PPP_FILTER */
 112 #if     VJC
 113         struct  slcompress *sc_comp;    /* vjc control buffer */
 114 #endif
 115
 116         /* Device-dependent part for async lines. */
 117         ext_accm sc_asyncmap;           /* async control character map */
 118         u_long  sc_rasyncmap;           /* receive async control char map */
 119         struct  mbuf *sc_outm;          /* mbuf chain currently being output */
 120         struct  mbuf *sc_m;             /* pointer to input mbuf chain */
 121         struct  mbuf *sc_mc;            /* pointer to current input mbuf */
 122         char    *sc_mp;                 /* ptr to next char in input mbuf */
 123         short   sc_ilen;                /* length of input packet so far */
 124         u_short sc_fcs;                 /* FCS so far (input) */
 125         u_short sc_outfcs;              /* FCS so far for output packet */
 126         u_char  sc_rawin[16];           /* chars as received */
 127         int     sc_rawin_count;         /* # in sc_rawin */
 128 };
 129
 130 extern struct ppp_softc ppp_softc[];
 131
 132 struct  ppp_softc *pppalloc(pid_t pid);
 133 void    pppdealloc(struct ppp_softc *sc);
 134 int     pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data,
 135                       int flag, struct proc *p);
 136 int     pppoutput(struct ifnet *ifp, struct mbuf *m0,
 137                        struct sockaddr *dst, struct rtentry *rtp);
 138 void    ppp_restart(struct ppp_softc *sc);
 139 void    ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
 140 struct  mbuf *ppp_dequeue(struct ppp_softc *sc);
 141 #endif /* __APPLE_API_PRIVATE */