bsd/netat/adsp_Init.c

   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  *      Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
  25  *      All Rights Reserved.
  26  */
  27
  28 /* dspInit.c
  29  *
  30  * From Mike Shoemaker v01.20 06/29/90 mbs
  31  *    Modified for MP, 1996 by Tuyen Nguyen
  32  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  33  */
  34 #include <sys/errno.h>
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <machine/spl.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/proc.h>
  41 #include <sys/filedesc.h>
  42 #include <sys/fcntl.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/socket.h>
  45 #include <sys/time.h>
  46
  47 #include <netat/sysglue.h>
  48 #include <netat/appletalk.h>
  49 #include <netat/at_pcb.h>
  50 #include <netat/debug.h>
  51 #include <netat/adsp.h>
  52 #include <netat/adsp_internal.h>
  53
  54 extern atlock_t adspgen_lock;
  55
  56 /*
  57  * InitContinue
  58  *
  59  * Handle 2nd half of code for dsp init.  We could be called directly by
  60  * the dsp Init routine, or if a socket has to be opened, we get called
  61  * by the completion routine of the dsp open socket.
  62  *
  63  * INPUTS:
  64  *              sp      The stream we're initing (not yet on list of streams)
  65  *              pb      The user's dsp Init param block
  66  *              soc The socket we're going to use
  67  * OUTPUTS:
  68  *              none
  69 */
  70 static void InitContinue(sp, pb) /* (CCBPtr sp, DSPPBPtr pb, int soc) */
  71     CCBPtr sp;
  72     struct adspcmd *pb;
  73 {
  74     int s;
  75
  76     /* Save connection's socket # in CCB */
  77     sp->localSocket = pb->socket;
  78
  79     /*
  80      * Link the new ccb onto queue.  Must be done with interrupts off.
  81      */
  82     ATDISABLE(s, adspgen_lock);
  83     qAddToEnd(AT_ADSP_STREAMS, sp); /* Put on linked list of connections */
  84     ATENABLE(s, adspgen_lock);
  85     return;
  86 }
  87
  88 /*
  89  * dspInit
  90  *
  91  * Create and initialize a connection end.  return ccbRefNum so that client can
  92  * reference this ccb in later calls.  The caller provides a pointer to
  93  * ccb which belongs to adsp until the connection end is removed.
  94  *
  95  * If we have to open a socket, we'll have to do an async open socket, and
  96  * finish up in the completion routine
  97  *
  98  * INPUTS:
  99  *      --> ccbPtr              Pointer to connection control block
 100  *      --> adspcmdPtr          Pointer to user request block
 101  *
 102  * OUTPUTS:
 103  *      <-- ccbRefNum           refnum assigned to this connection.
 104  *
 105  * ERRORS:
 106  *      EADDRINUSE or 0
 107  */
 108 int adspInit(sp, ap)            /* (DSPPBPtr pb) */
 109     CCBPtr sp;
 110     struct adspcmd *ap;
 111 {
 112     /*
 113      * Set connection end defaults
 114      */
 115     sp->badSeqMax = 3;          /* # of out-of-sequence packets received */
 116                                 /* until a retransmit advice packet is sent */
 117     sp->probeInterval = 6 * 30; /* 30 second probe interval */
 118     sp->rtmtInterval = 6 * 5;   /* Just a guess --- 5 seconds */
 119     sp->sendBlocking = 16;
 120     sp->sendInterval = 6;
 121     sp->badSeqMax = 3;          /* This is the default */
 122
 123     sp->ProbeTimer.type = kProbeTimerType;
 124     sp->FlushTimer.type = kFlushTimerType;
 125     sp->RetryTimer.type = kRetryTimerType;
 126     sp->AttnTimer.type  = kAttnTimerType;
 127     sp->ResetTimer.type = kResetTimerType;
 128
 129     if (ap->csCode == dspInit) { /* Only do this if not connection Listener */
 130         /*
 131          * Initialize send and receive queue.  Make sure they are the
 132          * right size
 133          */
 134         sp->rbuflen = RecvQSize;
 135         sp->rbuf_mb = 0;
 136         sp->sbuflen = SendQSize;
 137         sp->sbuf_mb = 0;
 138         sp->csbuf_mb = 0;
 139
 140         /*
 141          * Initialize send and receive defaults
 142          */
 143
 144         sp->attn_mb = 0;
 145         sp->state = sClosed;    /* Set state for connection end */
 146         /* end dspInit */
 147     } else {
 148
 149         /* dspCLInit */
 150         sp->state = sListening;               /* Set state for conn end */
 151     }      /* end dspCLInit */
 152     /*
 153      * User opens the socket, so continue with the init stuff
 154      */
 155     InitContinue(sp, ap);
 156     return(0);
 157 }
 158
 159
 160 /*
 161  * AdspBad
 162  *
 163  *
 164  * INPUTS:
 165  *      -->     ap                              Parameter block
 166  *
 167  */
 168 int AdspBad(ap)                 /* (DSPPBPtr pb) */
 169     struct adspcmd *ap;
 170 {
 171         dPrintf(D_M_ADSP, D_L_ERROR,
 172                 ("Hey! Do you have the right AuthToolbox?"));
 173         ap->ioResult = controlErr; /* Unknown csCode in the param block */
 174         return EINVAL;
 175 }