sys/netproto/atm/uni/unisig_decode.h

   1 /*
   2  *
   3  * ===================================
   4  * HARP  |  Host ATM Research Platform
   5  * ===================================
   6  *
   7  *
   8  * This Host ATM Research Platform ("HARP") file (the "Software") is
   9  * made available by Network Computing Services, Inc. ("NetworkCS")
  10  * "AS IS".  NetworkCS does not provide maintenance, improvements or
  11  * support of any kind.
  12  *
  13  * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
  14  * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
  15  * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
  16  * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
  17  * In no event shall NetworkCS be responsible for any damages, including
  18  * but not limited to consequential damages, arising from or relating to
  19  * any use of the Software or related support.
  20  *
  21  * Copyright 1994-1998 Network Computing Services, Inc.
  22  *
  23  * Copies of this Software may be made, however, the above copyright
  24  * notice must be reproduced on all copies.
  25  *
  26  *      @(#) $FreeBSD: src/sys/netatm/uni/unisig_decode.h,v 1.2 1999/08/28 00:49:05 peter Exp $
  27  *      @(#) $DragonFly: src/sys/netproto/atm/uni/unisig_decode.h,v 1.3 2003/08/23 10:06:22 rob Exp $
  28  *
  29  */
  30
  31 /*
  32  * ATM Forum UNI 3.0/3.1 Signalling Manager
  33  * ----------------------------------------
  34  *
  35  * Message formats
  36  *
  37  */
  38
  39 #ifndef _UNI_SIG_DECODE_H
  40 #define _UNI_SIG_DECODE_H
  41
  42
  43 /*
  44  * Values specifying which IEs are required in messages
  45  */
  46 #define IE_NA   0
  47 #define IE_MAND 1
  48 #define IE_OPT  2
  49
  50 /*
  51  * Structure for information element decoding information
  52  */
  53 struct ie_ent {
  54         u_char          ident;          /* IE identifier */
  55         int             min_len;        /* Min. length */
  56         int             max_len;        /* Max. length */
  57         int             p_idx;          /* IE pointer index in msg */
  58         int             (*decode)       /* Decoding function */
  59                                 (struct usfmt *, struct ie_generic *);
  60 };
  61
  62 /*
  63  * Macro to give the offset of a field in a generic IE structure
  64  */
  65 #define IE_OFFSET(f) \
  66         ((int)&((struct ie_generic *) 0)->f)
  67
  68 /*
  69  * Macro to give the size of a field in a generic IE structure
  70  */
  71 #define IE_FSIZE(f) \
  72         (sizeof(((struct ie_generic *) 0)->f))
  73
  74 #define IE_OFF_SIZE(f)   IE_OFFSET(f),IE_FSIZE(f)
  75
  76
  77 /*
  78  * Structure to define a field-driven decoding table (for AAL
  79  * parameters and ATM user cell rate IEs)
  80  */
  81 struct ie_decode_tbl {
  82         u_char  ident;
  83         int     len;
  84         int     f_offs;
  85         int     f_size;
  86 };
  87
  88 #endif /* _UNI_SIG_DECODE_H */