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FreeBSD/Linux Kernel Cross Reference
sys/net/if_pppvar.h

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    1 /*
    2  * if_pppvar.h - private structures and declarations for PPP.
    3  */
    4 /*-
    5  * Copyright (c) 1994 The Australian National University.
    6  * All rights reserved.
    7  *
    8  * Permission to use, copy, modify, and distribute this software and its
    9  * documentation is hereby granted, provided that the above copyright
   10  * notice appears in all copies.  This software is provided without any
   11  * warranty, express or implied. The Australian National University
   12  * makes no representations about the suitability of this software for
   13  * any purpose.
   14  *
   15  * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
   16  * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   17  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
   18  * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
   19  * OF SUCH DAMAGE.
   20  *
   21  * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
   22  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   23  * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   24  * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
   25  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
   26  * OR MODIFICATIONS.
   27  *
   28  * Copyright (c) 1989 Carnegie Mellon University.
   29  * All rights reserved.
   30  *
   31  * Redistribution and use in source and binary forms are permitted
   32  * provided that the above copyright notice and this paragraph are
   33  * duplicated in all such forms and that any documentation,
   34  * advertising materials, and other materials related to such
   35  * distribution and use acknowledge that the software was developed
   36  * by Carnegie Mellon University.  The name of the
   37  * University may not be used to endorse or promote products derived
   38  * from this software without specific prior written permission.
   39  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
   40  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
   41  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   42  *
   43  * $FreeBSD: src/sys/net/if_pppvar.h,v 1.23.2.3.4.1 2008/10/02 02:57:24 kensmith Exp $
   44  */
   45 
   46 /*
   47  * Supported network protocols.  These values are used for
   48  * indexing sc_npmode.
   49  */
   50 #define NP_IP   0               /* Internet Protocol */
   51 #define NP_IPV6 1               /* Internet Protocol version 6 */
   52 #define NUM_NP  2               /* Number of NPs. */
   53 
   54 /*
   55  * Structure describing each ppp unit.
   56  */
   57 struct ppp_softc {
   58         struct  ifnet *sc_ifp;          /* network-visible interface */
   59 /*hi*/  u_int   sc_flags;               /* control/status bits; see if_ppp.h */
   60         struct  callout sc_timo_ch;     /* Used for scheduling timeouts */
   61         void    *sc_devp;               /* pointer to device-dep structure */
   62         void    (*sc_start)(struct ppp_softc *);        /* start output proc */
   63         void    (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
   64         void    (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
   65         void    (*sc_setmtu)(struct ppp_softc *); /* set mtu */
   66         short   sc_mru;                 /* max receive unit */
   67         pid_t   sc_xfer;                /* used in transferring unit */
   68 /*hi*/  struct  ifqueue sc_rawq;        /* received packets */
   69 /*net*/ struct  ifqueue sc_inq;         /* queue of input packets for daemon */
   70 /*net*/ struct  ifqueue sc_fastq;       /* interactive output packet q */
   71         struct  mbuf *sc_npqueue;       /* output packets not to be sent yet */
   72         struct  mbuf **sc_npqtail;      /* ptr to last next ptr in npqueue */
   73         struct  pppstat sc_stats;       /* count of bytes/pkts sent/rcvd */
   74         enum    NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
   75         struct  compressor *sc_xcomp;   /* transmit compressor */
   76         void    *sc_xc_state;           /* transmit compressor state */
   77         struct  compressor *sc_rcomp;   /* receive decompressor */
   78         void    *sc_rc_state;           /* receive decompressor state */
   79         time_t  sc_last_sent;           /* time (secs) last NP pkt sent */
   80         time_t  sc_last_recv;           /* time (secs) last NP pkt rcvd */
   81 #ifdef PPP_FILTER
   82         struct  bpf_program sc_pass_filt;   /* filter for packets to pass */
   83         struct  bpf_program sc_active_filt; /* filter for "non-idle" packets */
   84 #endif /* PPP_FILTER */
   85 #ifdef  VJC
   86         struct  slcompress *sc_comp;    /* vjc control buffer */
   87 #endif
   88 
   89         /* Device-dependent part for async lines. */
   90         ext_accm sc_asyncmap;           /* async control character map */
   91         u_long  sc_rasyncmap;           /* receive async control char map */
   92         struct  mbuf *sc_outm;          /* mbuf chain currently being output */
   93         struct  mbuf *sc_m;             /* pointer to input mbuf chain */
   94         struct  mbuf *sc_mc;            /* pointer to current input mbuf */
   95         char    *sc_mp;                 /* ptr to next char in input mbuf */
   96         short   sc_ilen;                /* length of input packet so far */
   97         u_short sc_fcs;                 /* FCS so far (input) */
   98         u_short sc_outfcs;              /* FCS so far for output packet */
   99         u_char  sc_rawin[16];           /* chars as received */
  100         int     sc_rawin_count;         /* # in sc_rawin */
  101         LIST_ENTRY(ppp_softc) sc_list;
  102 };
  103 #define PPP2IFP(sc)     ((sc)->sc_ifp)
  104 
  105 struct  ppp_softc *pppalloc(pid_t pid);
  106 void    pppdealloc(struct ppp_softc *sc);
  107 int     pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data, int flag,
  108             struct thread *td);
  109 int     pppoutput(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
  110             struct rtentry *rtp);
  111 void    ppp_restart(struct ppp_softc *sc);
  112 void    ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
  113 struct  mbuf *ppp_dequeue(struct ppp_softc *sc);

Cache object: c1780c9d56e762d2780f4fa9c60c9a63


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