bsd/netat/adsp_Init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  *      Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
  27  *      All Rights Reserved.
  28  */
  29
  30 /* dspInit.c
  31  *
  32  * From Mike Shoemaker v01.20 06/29/90 mbs
  33  *    Modified for MP, 1996 by Tuyen Nguyen
  34  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  35  */
  36 #include <sys/errno.h>
  37 #include <sys/types.h>
  38 #include <sys/param.h>
  39 #include <machine/spl.h>
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/proc.h>
  43 #include <sys/filedesc.h>
  44 #include <sys/fcntl.h>
  45 #include <sys/mbuf.h>
  46 #include <sys/socket.h>
  47 #include <sys/time.h>
  48
  49 #include <netat/sysglue.h>
  50 #include <netat/appletalk.h>
  51 #include <netat/at_pcb.h>
  52 #include <netat/debug.h>
  53 #include <netat/adsp.h>
  54 #include <netat/adsp_internal.h>
  55
  56 extern atlock_t adspgen_lock;
  57
  58 /*
  59  * InitContinue
  60  *
  61  * Handle 2nd half of code for dsp init.  We could be called directly by
  62  * the dsp Init routine, or if a socket has to be opened, we get called
  63  * by the completion routine of the dsp open socket.
  64  *
  65  * INPUTS:
  66  *              sp      The stream we're initing (not yet on list of streams)
  67  *              pb      The user's dsp Init param block
  68  *              soc The socket we're going to use
  69  * OUTPUTS:
  70  *              none
  71 */
  72 static void InitContinue(sp, pb) /* (CCBPtr sp, DSPPBPtr pb, int soc) */
  73     CCBPtr sp;
  74     struct adspcmd *pb;
  75 {
  76     int s;
  77
  78     /* Save connection's socket # in CCB */
  79     sp->localSocket = pb->socket;
  80
  81     /*
  82      * Link the new ccb onto queue.  Must be done with interrupts off.
  83      */
  84     ATDISABLE(s, adspgen_lock);
  85     qAddToEnd(AT_ADSP_STREAMS, sp); /* Put on linked list of connections */
  86     ATENABLE(s, adspgen_lock);
  87     return;
  88 }
  89
  90 /*
  91  * dspInit
  92  *
  93  * Create and initialize a connection end.  return ccbRefNum so that client can
  94  * reference this ccb in later calls.  The caller provides a pointer to
  95  * ccb which belongs to adsp until the connection end is removed.
  96  *
  97  * If we have to open a socket, we'll have to do an async open socket, and
  98  * finish up in the completion routine
  99  *
 100  * INPUTS:
 101  *      --> ccbPtr              Pointer to connection control block
 102  *      --> adspcmdPtr          Pointer to user request block
 103  *
 104  * OUTPUTS:
 105  *      <-- ccbRefNum           refnum assigned to this connection.
 106  *
 107  * ERRORS:
 108  *      EADDRINUSE or 0
 109  */
 110 int adspInit(sp, ap)            /* (DSPPBPtr pb) */
 111     CCBPtr sp;
 112     struct adspcmd *ap;
 113 {
 114     /*
 115      * Set connection end defaults
 116      */
 117     sp->badSeqMax = 3;          /* # of out-of-sequence packets received */
 118                                 /* until a retransmit advice packet is sent */
 119     sp->probeInterval = 6 * 30; /* 30 second probe interval */
 120     sp->rtmtInterval = 6 * 5;   /* Just a guess --- 5 seconds */
 121     sp->sendBlocking = 16;
 122     sp->sendInterval = 6;
 123     sp->badSeqMax = 3;          /* This is the default */
 124
 125     sp->ProbeTimer.type = kProbeTimerType;
 126     sp->FlushTimer.type = kFlushTimerType;
 127     sp->RetryTimer.type = kRetryTimerType;
 128     sp->AttnTimer.type  = kAttnTimerType;
 129     sp->ResetTimer.type = kResetTimerType;
 130
 131     if (ap->csCode == dspInit) { /* Only do this if not connection Listener */
 132         /*
 133          * Initialize send and receive queue.  Make sure they are the
 134          * right size
 135          */
 136         sp->rbuflen = RecvQSize;
 137         sp->rbuf_mb = 0;
 138         sp->sbuflen = SendQSize;
 139         sp->sbuf_mb = 0;
 140         sp->csbuf_mb = 0;
 141
 142         /*
 143          * Initialize send and receive defaults
 144          */
 145
 146         sp->attn_mb = 0;
 147         sp->state = sClosed;    /* Set state for connection end */
 148         /* end dspInit */
 149     } else {
 150
 151         /* dspCLInit */
 152         sp->state = sListening;               /* Set state for conn end */
 153     }      /* end dspCLInit */
 154     /*
 155      * User opens the socket, so continue with the init stuff
 156      */
 157     InitContinue(sp, ap);
 158     return(0);
 159 }
 160
 161
 162 /*
 163  * AdspBad
 164  *
 165  *
 166  * INPUTS:
 167  *      -->     ap                              Parameter block
 168  *
 169  */
 170 int AdspBad(ap)                 /* (DSPPBPtr pb) */
 171     struct adspcmd *ap;
 172 {
 173         dPrintf(D_M_ADSP, D_L_ERROR,
 174                 ("Hey! Do you have the right AuthToolbox?"));
 175         ap->ioResult = controlErr; /* Unknown csCode in the param block */
 176         return EINVAL;
 177 }