bsd/netat/adsp_Options.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  * dspOptions.c
  30  *
  31  * From v01.06 04/19/90 mbs
  32  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  33  */
  34
  35 #include <sys/errno.h>
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <machine/spl.h>
  39 #include <sys/systm.h>
  40 #include <sys/kernel.h>
  41 #include <sys/proc.h>
  42 #include <sys/filedesc.h>
  43 #include <sys/fcntl.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/socket.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 /*
  55  * dspOptions
  56  *
  57  * INPUTS:
  58  *      --> ccbRefNum           refnum of connection end
  59  *      --> sendBlocking        send blocking threshold
  60  *      --> sendTimer           send timer interval
  61  *      --> rtmtTimer           retransmit timer interval
  62  *      --> badSeqMax           retransmit advice send threshold
  63  *      --> useCheckSum         generate DDP checksum on internet packets
  64  *
  65  * OUTPUTS:
  66  *      none
  67  *
  68  * ERRORS:
  69  *      errRefNum               bad connection refnum
  70 */
  71 int adspOptions(sp, pb) /* (DSPPBPtr pb) */
  72     CCBPtr              sp;
  73     struct adspcmd *pb;
  74 {
  75     short err;
  76
  77     if (sp == 0) {
  78         pb->ioResult = errRefNum;
  79         return EINVAL;
  80     }
  81
  82     if (pb->u.optionParams.sendBlocking)
  83         sp->sendBlocking = pb->u.optionParams.sendBlocking;
  84
  85     if (pb->u.optionParams.sendTimer)
  86         sp->sendInterval = pb->u.optionParams.sendTimer;
  87
  88     /* No longer allowed to set retransmit timer as of ADSP 1.5 */
  89     /* Use it to specify a command blocking request specific to MacOS
  90      * emulation. */
  91     if (pb->u.optionParams.rtmtTimer)
  92         sp->delay = pb->u.optionParams.rtmtTimer;
  93     KERNEL_DEBUG(DBG_ADSP_MISC, 0, sp, sp->delay, pb, pb->u.optionParams.rtmtTimer);
  94
  95     if (pb->u.optionParams.badSeqMax)
  96         sp->badSeqMax = pb->u.optionParams.badSeqMax;
  97
  98     sp->useCheckSum = pb->u.optionParams.useCheckSum;
  99     if (pb->u.optionParams.newPID)
 100         sp->pid = pb->u.optionParams.newPID;
 101     pb->ioResult = 0;
 102     adspioc_ack(0, pb->ioc, pb->gref);
 103     return 0;
 104
 105 }