system/alpha/h/buffer.h

   1 #ifndef __BUFFER_H_LOADED
   2 #define __BUFFER_H_LOADED
   3 /*****************************************************************************
   4
   5        Copyright © 1993, 1994 Digital Equipment Corporation,
   6                        Maynard, Massachusetts.
   7
   8                         All Rights Reserved
   9
  10 Permission to use, copy, modify, and distribute this software and its
  11 documentation for any purpose and without fee is hereby granted, provided
  12 that the copyright notice and this permission notice appear in all copies
  13 of software and supporting documentation, and that the name of Digital not
  14 be used in advertising or publicity pertaining to distribution of the software
  15 without specific, written prior permission. Digital grants this permission
  16 provided that you prominently mark, as not part of the original, any
  17 modifications made to this software or documentation.
  18
  19 Digital Equipment Corporation disclaims all warranties and/or guarantees
  20 with regard to this software, including all implied warranties of fitness for
  21 a particular purpose and merchantability, and makes no representations
  22 regarding the use of, or the results of the use of, the software and
  23 documentation in terms of correctness, accuracy, reliability, currentness or
  24 otherwise; and you rely on the software, documentation and results solely at
  25 your own risk.
  26
  27 ******************************************************************************/
  28
  29 /*
  30  *  $Id: buffer.h,v 1.1.1.1 1997/10/30 23:27:14 verghese Exp $;
  31  */
  32
  33 /*
  34  * $Log: buffer.h,v $
  35  * Revision 1.1.1.1  1997/10/30 23:27:14  verghese
  36  * current 10/29/97
  37  *
  38  * Revision 1.3  1994/08/05  20:13:47  fdh
  39  * Updated Copyright header and RCS $Id: identifier.
  40  *
  41  * Revision 1.2  1994/06/20  14:18:59  fdh
  42  * Fixup header file preprocessor #include conditionals.
  43  *
  44  * Revision 1.1  1993/06/08  19:56:12  fdh
  45  * Initial revision
  46  *
  47  */
  48
  49
  50 /* buffer.h */
  51 /* definitions for buffer management */
  52
  53
  54 typedef struct Packet {
  55     struct Packet *link;
  56     char dest[6];
  57     char src[6];
  58     short unsigned count;
  59     char data[1536];
  60   } PACKET;
  61
  62 #define BSIZE (sizeof(PACKET))
  63 #define buffer_NIL ((PACKET *) 0)
  64
  65
  66 extern void buffer_init(PACKET *start, int size);
  67 extern PACKET *buffer_alloc();
  68 extern void buffer_free(PACKET *p);
  69
  70 #endif /* __BUFFER_H_LOADED */