bsd/netat/adsp_Init.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  *      Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
  32  *      All Rights Reserved.
  33  */
  34
  35 /* dspInit.c
  36  *
  37  * From Mike Shoemaker v01.20 06/29/90 mbs
  38  *    Modified for MP, 1996 by Tuyen Nguyen
  39  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  40  */
  41 #include <sys/errno.h>
  42 #include <sys/types.h>
  43 #include <sys/param.h>
  44 #include <machine/spl.h>
  45 #include <sys/systm.h>
  46 #include <sys/kernel.h>
  47 #include <sys/proc.h>
  48 #include <sys/filedesc.h>
  49 #include <sys/fcntl.h>
  50 #include <sys/mbuf.h>
  51 #include <sys/socket.h>
  52 #include <sys/time.h>
  53
  54 #include <netat/sysglue.h>
  55 #include <netat/appletalk.h>
  56 #include <netat/at_pcb.h>
  57 #include <netat/debug.h>
  58 #include <netat/adsp.h>
  59 #include <netat/adsp_internal.h>
  60
  61 extern atlock_t adspgen_lock;
  62
  63 /*
  64  * InitContinue
  65  *
  66  * Handle 2nd half of code for dsp init.  We could be called directly by
  67  * the dsp Init routine, or if a socket has to be opened, we get called
  68  * by the completion routine of the dsp open socket.
  69  *
  70  * INPUTS:
  71  *              sp      The stream we're initing (not yet on list of streams)
  72  *              pb      The user's dsp Init param block
  73  *              soc The socket we're going to use
  74  * OUTPUTS:
  75  *              none
  76 */
  77 static void InitContinue(sp, pb) /* (CCBPtr sp, DSPPBPtr pb, int soc) */
  78     CCBPtr sp;
  79     struct adspcmd *pb;
  80 {
  81     int s;
  82
  83     /* Save connection's socket # in CCB */
  84     sp->localSocket = pb->socket;
  85
  86     /*
  87      * Link the new ccb onto queue.  Must be done with interrupts off.
  88      */
  89     ATDISABLE(s, adspgen_lock);
  90     qAddToEnd(AT_ADSP_STREAMS, sp); /* Put on linked list of connections */
  91     ATENABLE(s, adspgen_lock);
  92     return;
  93 }
  94
  95 /*
  96  * dspInit
  97  *
  98  * Create and initialize a connection end.  return ccbRefNum so that client can
  99  * reference this ccb in later calls.  The caller provides a pointer to
 100  * ccb which belongs to adsp until the connection end is removed.
 101  *
 102  * If we have to open a socket, we'll have to do an async open socket, and
 103  * finish up in the completion routine
 104  *
 105  * INPUTS:
 106  *      --> ccbPtr              Pointer to connection control block
 107  *      --> adspcmdPtr          Pointer to user request block
 108  *
 109  * OUTPUTS:
 110  *      <-- ccbRefNum           refnum assigned to this connection.
 111  *
 112  * ERRORS:
 113  *      EADDRINUSE or 0
 114  */
 115 int adspInit(sp, ap)            /* (DSPPBPtr pb) */
 116     CCBPtr sp;
 117     struct adspcmd *ap;
 118 {
 119     /*
 120      * Set connection end defaults
 121      */
 122     sp->badSeqMax = 3;          /* # of out-of-sequence packets received */
 123                                 /* until a retransmit advice packet is sent */
 124     sp->probeInterval = 6 * 30; /* 30 second probe interval */
 125     sp->rtmtInterval = 6 * 5;   /* Just a guess --- 5 seconds */
 126     sp->sendBlocking = 16;
 127     sp->sendInterval = 6;
 128     sp->badSeqMax = 3;          /* This is the default */
 129
 130     sp->ProbeTimer.type = kProbeTimerType;
 131     sp->FlushTimer.type = kFlushTimerType;
 132     sp->RetryTimer.type = kRetryTimerType;
 133     sp->AttnTimer.type  = kAttnTimerType;
 134     sp->ResetTimer.type = kResetTimerType;
 135
 136     if (ap->csCode == dspInit) { /* Only do this if not connection Listener */
 137         /*
 138          * Initialize send and receive queue.  Make sure they are the
 139          * right size
 140          */
 141         sp->rbuflen = RecvQSize;
 142         sp->rbuf_mb = 0;
 143         sp->sbuflen = SendQSize;
 144         sp->sbuf_mb = 0;
 145         sp->csbuf_mb = 0;
 146
 147         /*
 148          * Initialize send and receive defaults
 149          */
 150
 151         sp->attn_mb = 0;
 152         sp->state = sClosed;    /* Set state for connection end */
 153         /* end dspInit */
 154     } else {
 155
 156         /* dspCLInit */
 157         sp->state = sListening;               /* Set state for conn end */
 158     }      /* end dspCLInit */
 159     /*
 160      * User opens the socket, so continue with the init stuff
 161      */
 162     InitContinue(sp, ap);
 163     return(0);
 164 }
 165
 166
 167 /*
 168  * AdspBad
 169  *
 170  *
 171  * INPUTS:
 172  *      -->     ap                              Parameter block
 173  *
 174  */
 175 int AdspBad(ap)                 /* (DSPPBPtr pb) */
 176     struct adspcmd *ap;
 177 {
 178         dPrintf(D_M_ADSP, D_L_ERROR,
 179                 ("Hey! Do you have the right AuthToolbox?"));
 180         ap->ioResult = controlErr; /* Unknown csCode in the param block */
 181         return EINVAL;
 182 }