bsd/netat/adsp_Options.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  * dspOptions.c
  25  *
  26  * From v01.06 04/19/90 mbs
  27  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  28  */
  29
  30 #include <sys/errno.h>
  31 #include <sys/types.h>
  32 #include <sys/param.h>
  33 #include <machine/spl.h>
  34 #include <sys/systm.h>
  35 #include <sys/kernel.h>
  36 #include <sys/proc.h>
  37 #include <sys/filedesc.h>
  38 #include <sys/fcntl.h>
  39 #include <sys/mbuf.h>
  40 #include <sys/socket.h>
  41
  42 #include <netat/sysglue.h>
  43 #include <netat/appletalk.h>
  44 #include <netat/at_pcb.h>
  45 #include <netat/debug.h>
  46 #include <netat/adsp.h>
  47 #include <netat/adsp_internal.h>
  48
  49 /*
  50  * dspOptions
  51  *
  52  * INPUTS:
  53  *      --> ccbRefNum           refnum of connection end
  54  *      --> sendBlocking        send blocking threshold
  55  *      --> sendTimer           send timer interval
  56  *      --> rtmtTimer           retransmit timer interval
  57  *      --> badSeqMax           retransmit advice send threshold
  58  *      --> useCheckSum         generate DDP checksum on internet packets
  59  *
  60  * OUTPUTS:
  61  *      none
  62  *
  63  * ERRORS:
  64  *      errRefNum               bad connection refnum
  65 */
  66 int adspOptions(sp, pb) /* (DSPPBPtr pb) */
  67     CCBPtr              sp;
  68     struct adspcmd *pb;
  69 {
  70     short err;
  71
  72     if (sp == 0) {
  73         pb->ioResult = errRefNum;
  74         return EINVAL;
  75     }
  76
  77     if (pb->u.optionParams.sendBlocking)
  78         sp->sendBlocking = pb->u.optionParams.sendBlocking;
  79
  80     if (pb->u.optionParams.sendTimer)
  81         sp->sendInterval = pb->u.optionParams.sendTimer;
  82
  83     /* No longer allowed to set retransmit timer as of ADSP 1.5 */
  84     /* Use it to specify a command blocking request specific to MacOS
  85      * emulation. */
  86     if (pb->u.optionParams.rtmtTimer)
  87         sp->delay = pb->u.optionParams.rtmtTimer;
  88     KERNEL_DEBUG(DBG_ADSP_MISC, 0, sp, sp->delay, pb, pb->u.optionParams.rtmtTimer);
  89
  90     if (pb->u.optionParams.badSeqMax)
  91         sp->badSeqMax = pb->u.optionParams.badSeqMax;
  92
  93     sp->useCheckSum = pb->u.optionParams.useCheckSum;
  94     if (pb->u.optionParams.newPID)
  95         sp->pid = pb->u.optionParams.newPID;
  96     pb->ioResult = 0;
  97     adspioc_ack(0, pb->ioc, pb->gref);
  98     return 0;
  99
 100 }