usr.sbin/ppp/mp.h

   1 /*-
   2  * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/usr.sbin/ppp/mp.h,v 1.9.2.2 2002/09/01 02:12:29 brian Exp $
  27  * $DragonFly: src/usr.sbin/ppp/mp.h,v 1.2 2003/06/17 04:30:00 dillon Exp $
  28  */
  29
  30 struct mbuf;
  31 struct physical;
  32 struct bundle;
  33 struct cmdargs;
  34 struct datalink;
  35
  36 #define ENDDISC_NULL    0
  37 #define ENDDISC_LOCAL   1
  38 #define ENDDISC_IP      2
  39 #define ENDDISC_MAC     3
  40 #define ENDDISC_MAGIC   4
  41 #define ENDDISC_PSN     5
  42
  43 #define MP_LINKSENT     0       /* We attached the link to another ppp */
  44 #define MP_UP           1       /* We've started MP */
  45 #define MP_ADDED        2       /* We've added the link to our MP */
  46 #define MP_FAILED       3       /* No go */
  47
  48 #define MPSERVER_CONNECTED      0
  49 #define MPSERVER_LISTENING      1
  50 #define MPSERVER_FAILED         2
  51
  52 struct enddisc {
  53   u_char class;
  54   char address[50];
  55   int len;
  56 };
  57
  58 struct peerid {
  59   struct enddisc enddisc;       /* Peers endpoint discriminator */
  60   char authname[AUTHLEN];       /* Peers name (authenticated) */
  61 };
  62
  63 struct mpserver {
  64   struct fdescriptor desc;
  65   int fd;                       /* listen()ing or connect()ing here */
  66   struct sockaddr_un socket;    /* On this socket */
  67
  68   struct {
  69     struct datalink *dl;        /* Send this datalink */
  70   } send;                       /* (in UpdateSet()) */
  71 };
  72
  73 struct mp {
  74   struct link link;
  75
  76   unsigned active : 1;
  77   unsigned peer_is12bit : 1;    /* 12/24bit seq nos */
  78   unsigned local_is12bit : 1;
  79   u_short peer_mrru;
  80   u_short local_mrru;
  81
  82   struct peerid peer;           /* Who are we talking to */
  83   struct mpserver server;       /* Our ``sharing'' socket */
  84
  85   struct {
  86     u_int32_t seq;              /* next outgoing seq */
  87     int link;                   /* Next link to send on */
  88     int af;                     /* Next address family to send */
  89   } out;
  90
  91   struct {
  92     u_int32_t min_in;           /* minimum received incoming seq */
  93     u_int32_t next_in;          /* next incoming seq to process */
  94   } seq;
  95
  96   struct {
  97     u_short mrru;               /* Max Reconstructed Receive Unit */
  98     unsigned shortseq : 2;      /* I want short Sequence Numbers */
  99     unsigned negenddisc : 2;    /* I want an endpoint discriminator */
 100     struct enddisc enddisc;     /* endpoint discriminator */
 101     struct {
 102       int min;                  /* Lowest percent of bundle->bandwidth */
 103       int max;                  /* Highest percent of bundle->bandwidth out */
 104       int period;               /* link->throughput sample period */
 105     } autoload;
 106   } cfg;
 107
 108   struct mbuf *inbufs;          /* Received fragments */
 109   struct fsm_parent fsmp;       /* Our callback functions */
 110   struct bundle *bundle;        /* Parent */
 111 };
 112
 113 struct mp_link {
 114   u_int32_t seq;                /* 12 or 24 bit incoming seq */
 115   unsigned bandwidth;           /* Our link bandwidth (or zero) */
 116 };
 117
 118 struct mp_header {
 119   unsigned begin : 1;
 120   unsigned end : 1;
 121   u_int32_t seq;
 122 };
 123
 124 #define descriptor2mpserver(d) \
 125   ((d)->type == MPSERVER_DESCRIPTOR ? (struct mpserver *)(d) : NULL)
 126 #define mpserver_IsOpen(s) ((s)->fd != -1)
 127
 128 extern void peerid_Init(struct peerid *);
 129 extern int peerid_Equal(const struct peerid *, const struct peerid *);
 130 extern void mpserver_Init(struct mpserver *);
 131 extern int mpserver_Open(struct mpserver *, struct peerid *);
 132 extern void mpserver_Close(struct mpserver *);
 133 extern void mp_Init(struct mp *, struct bundle *);
 134 extern void mp_linkInit(struct mp_link *);
 135 extern int mp_Up(struct mp *, struct datalink *);
 136 extern void mp_Down(struct mp *);
 137 extern struct mbuf *mp_Input(struct bundle *, struct link *, struct mbuf *);
 138 extern int mp_FillPhysicalQueues(struct bundle *);
 139 extern int mp_SetDatalinkBandwidth(struct cmdargs const *);
 140 extern int mp_ShowStatus(struct cmdargs const *);
 141 extern const char *mp_Enddisc(u_char, const char *, size_t);
 142 extern int mp_SetEnddisc(struct cmdargs const *);
 143 extern void mp_LinkLost(struct mp *, struct datalink *);
 144 extern void mp_RestartAutoloadTimer(struct mp *);
 145 extern void mp_CheckAutoloadTimer(struct mp *);
 146 extern void mp_StopAutoloadTimer(struct mp *);
 147 extern size_t mp_QueueLen(struct mp *);