sys/netproto/atm/atm_sap.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/atm_sap.h,v 1.2 1999/08/28 00:48:37 peter Exp $
  27  *      @(#) $DragonFly: src/sys/netproto/atm/atm_sap.h,v 1.2 2003/06/17 04:28:49 dillon Exp $
  28  *
  29  */
  30
  31 /*
  32  * Core ATM Services
  33  * -----------------
  34  *
  35  * ATM Services definitions
  36  *
  37  */
  38
  39 #ifndef _NETATM_ATM_SAP_H
  40 #define _NETATM_ATM_SAP_H
  41
  42 /*
  43  * Service Access Point (SAP)
  44  *
  45  * A SAP specifies the definition of an interface used between two adjacent
  46  * layers.  The SAP is named for the services the lower layer provides to
  47  * the upper layer.
  48  *
  49  * The types of SAPs used are:
  50  *      Stack - defines the interfaces between stack service entities.
  51  *              These are further divided into:
  52  *
  53  *              Stack class SAP - which identifies the type of interface
  54  *                      used.  All SAPs of a particular class will provide
  55  *                      the same interface services to the higher layer.
  56  *                      All stack command codes are constructed using class
  57  *                      SAP values.
  58  *
  59  *              Stack instance SAP - which identifies the specific identity
  60  *                      of the layer providing the class interface.
  61  */
  62 typedef u_short Sap_t;
  63
  64 #define SAP_TYPE_MASK   0xc000
  65 #define SAP_TYPE_STACK  0x8000
  66 #define SAP_CLASS_MASK  0xff80
  67
  68 #define SAP_STACK(c, i)         (SAP_TYPE_STACK | ((c) << 7) | (i))
  69
  70 /* Stack SAPs */
  71 #define SAP_ATM                 SAP_STACK(1, 0)         /* ATM cell */
  72 #define SAP_SAR                 SAP_STACK(2, 0)         /* AAL SAR */
  73 #define SAP_SAR_AAL3_4          SAP_STACK(2, 3)         /* AAL3/4 SAR */
  74 #define SAP_SAR_AAL5            SAP_STACK(2, 5)         /* AAL5 SAR */
  75 #define SAP_CPCS                SAP_STACK(3, 0)         /* AAL CPCS */
  76 #define SAP_CPCS_AAL3_4         SAP_STACK(3, 3)         /* AAL3/4 CPCS */
  77 #define SAP_CPCS_AAL5           SAP_STACK(3, 5)         /* AAL5 CPCS */
  78 #define SAP_SSCOP               SAP_STACK(4, 0)         /* ITU Q.2110 */
  79 #define SAP_SSCF_UNI            SAP_STACK(5, 0)         /* ITU Q.2130 */
  80 #define SAP_SSCF_NNI            SAP_STACK(6, 0)         /* ITU Q.2140 */
  81
  82 #endif  /* _NETATM_ATM_SAP_H */