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Annotation of kernel/bsd/netat/adsp_Init.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  *     Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
        !            27:  *     All Rights Reserved.
        !            28:  *
        !            29:  *     THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF APPLE COMPUTER, INC.
        !            30:  *     The copyright notice above does not evidence any actual or
        !            31:  *     intended publication of such source code.
        !            32:  */
        !            33: 
        !            34: #include       <adsp_local.h>
        !            35: extern atlock_t adspgen_lock;
        !            36: 
        !            37: /*
        !            38:  * InitContinue
        !            39:  * 
        !            40:  * Handle 2nd half of code for dsp init.  We could be called directly by 
        !            41:  * the dsp Init routine, or if a socket has to be opened, we get called 
        !            42:  * by the completion routine of the dsp open socket.
        !            43:  *
        !            44:  * INPUTS:
        !            45:  *             sp      The stream we're initing (not yet on list of streams)
        !            46:  *             pb      The user's dsp Init param block
        !            47:  *             soc The socket we're going to use
        !            48:  * OUTPUTS:
        !            49:  *             none
        !            50: */
        !            51: static void InitContinue(sp, pb) /* (CCBPtr sp, DSPPBPtr pb, int soc) */
        !            52:     CCBPtr sp;
        !            53:     struct adspcmd *pb;
        !            54: {
        !            55:     int s;
        !            56: 
        !            57:     /* Save connection's socket # in CCB */
        !            58:     sp->localSocket = pb->socket; 
        !            59: 
        !            60:     /*
        !            61:      * Link the new ccb onto queue.  Must be done with interrupts off.
        !            62:      */
        !            63:     ATDISABLE(s, adspgen_lock);
        !            64:     qAddToEnd(AT_ADSP_STREAMS, sp); /* Put on linked list of connections */
        !            65:     ATENABLE(s, adspgen_lock);
        !            66:     return;
        !            67: }
        !            68: 
        !            69: /*
        !            70:  * dspInit
        !            71:  *
        !            72:  * Create and initialize a connection end.  return ccbRefNum so that client can
        !            73:  * reference this ccb in later calls.  The caller provides a pointer to 
        !            74:  * ccb which belongs to adsp until the connection end is removed.
        !            75:  *
        !            76:  * If we have to open a socket, we'll have to do an async open socket, and 
        !            77:  * finish up in the completion routine
        !            78:  * 
        !            79:  * INPUTS:
        !            80:  *     --> ccbPtr              Pointer to connection control block
        !            81:  *     --> adspcmdPtr          Pointer to user request block
        !            82:  *
        !            83:  * OUTPUTS:
        !            84:  *     <-- ccbRefNum           refnum assigned to this connection.
        !            85:  *
        !            86:  * ERRORS:
        !            87:  *     EADDRINUSE or 0
        !            88:  */
        !            89: int adspInit(sp, ap)           /* (DSPPBPtr pb) */
        !            90:     CCBPtr sp;
        !            91:     struct adspcmd *ap;
        !            92: {
        !            93:     /*
        !            94:      * Set connection end defaults
        !            95:      */
        !            96:     sp->badSeqMax = 3;         /* # of out-of-sequence packets received */
        !            97:                                /* until a retransmit advice packet is sent */
        !            98:     sp->probeInterval = 6 * 30;        /* 30 second probe interval */
        !            99:     sp->rtmtInterval = 6 * 5;  /* Just a guess --- 5 seconds */
        !           100:     sp->sendBlocking = 16;
        !           101:     sp->sendInterval = 6;
        !           102:     sp->badSeqMax = 3;         /* This is the default */
        !           103:        
        !           104:     sp->ProbeTimer.type        = kProbeTimerType;
        !           105:     sp->FlushTimer.type = kFlushTimerType;
        !           106:     sp->RetryTimer.type = kRetryTimerType;
        !           107:     sp->AttnTimer.type = kAttnTimerType;
        !           108:     sp->ResetTimer.type = kResetTimerType;
        !           109:        
        !           110:     if (ap->csCode == dspInit) { /* Only do this if not connection Listener */
        !           111:        /*
        !           112:         * Initialize send and receive queue.  Make sure they are the 
        !           113:         * right size
        !           114:         */
        !           115:        sp->rbuflen = RecvQSize;
        !           116:        sp->rbuf_mb = 0;
        !           117:        sp->sbuflen = SendQSize;
        !           118:        sp->sbuf_mb = 0;
        !           119:        sp->csbuf_mb = 0;
        !           120: 
        !           121:        /*
        !           122:         * Initialize send and receive defaults
        !           123:         */
        !           124:        
        !           125:        sp->attn_mb = 0;
        !           126:        sp->state = sClosed;    /* Set state for connection end */
        !           127:        /* end dspInit */           
        !           128:     } else {  
        !           129:        
        !           130:        /* dspCLInit */
        !           131:        sp->state = sListening;               /* Set state for conn end */
        !           132:     }      /* end dspCLInit */
        !           133:     /*
        !           134:      * User opens the socket, so continue with the init stuff
        !           135:      */
        !           136:     InitContinue(sp, ap);
        !           137:     return(0);
        !           138: }
        !           139: 
        !           140: 
        !           141: /*
        !           142:  * AdspBad
        !           143:  *
        !           144:  * 
        !           145:  * INPUTS:
        !           146:  *     -->     ap                              Parameter block
        !           147:  *
        !           148:  */
        !           149: int AdspBad(ap)                        /* (DSPPBPtr pb) */
        !           150:     struct adspcmd *ap;
        !           151: {
        !           152:        dPrintf(D_M_ADSP, D_L_ERROR, 
        !           153:                ("Hey! Do you have the right AuthToolbox?"));
        !           154:        ap->ioResult = controlErr; /* Unknown csCode in the param block */
        !           155:        return EINVAL;
        !           156: }

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