bsd/netat/adsp_Init.c

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