include/sys/vlan.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*
  27  * vlan.h header for common (non-media specific) VLAN declarations.
  28  */
  29
  30 #ifndef _SYS_VLAN_H
  31 #define _SYS_VLAN_H
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #define VLAN_TAGSZ      4
  38
  39 #define VLAN_TPID       0x8100u
  40
  41 #define VLAN_ID_MASK    0x0fffu
  42 #define VLAN_ID_SIZE    12
  43 #define VLAN_ID_SHIFT   0
  44
  45 #define VLAN_CFI_MASK   0x0001u
  46 #define VLAN_CFI_SIZE   1
  47 #define VLAN_CFI_SHIFT  (VLAN_ID_SHIFT + VLAN_ID_SIZE)
  48
  49 #define VLAN_PRI_MASK   0x0007u
  50 #define VLAN_PRI_SIZE   3
  51 #define VLAN_PRI_SHIFT  (VLAN_CFI_SHIFT + VLAN_CFI_SIZE)
  52
  53 #define VLAN_ID_NONE    0
  54 #define VLAN_ID_MIN     1
  55 #define VLAN_ID_MAX     4094
  56
  57 #define VLAN_TCI(pri, cfi, vid) \
  58         (((pri) << VLAN_PRI_SHIFT) | \
  59         ((cfi) << VLAN_CFI_SHIFT) | \
  60         ((vid) << VLAN_ID_SHIFT))
  61
  62 /*
  63  * Deconstruct a VTAG ...
  64  */
  65 #define VLAN_PRI(tci)   (((tci) >> VLAN_PRI_SHIFT) & VLAN_PRI_MASK)
  66 #define VLAN_CFI(tci)   (((tci) >> VLAN_CFI_SHIFT) & VLAN_CFI_MASK)
  67 #define VLAN_ID(tci)    (((tci) >> VLAN_ID_SHIFT) & VLAN_ID_MASK)
  68
  69 #define VLAN_BAND_MAP   32
  70
  71 #define VLAN_MBLKPRI(mp)                                \
  72         ((((mp)->b_band) / VLAN_BAND_MAP) > 7 ? 0 :     \
  73         (((mp)->b_band) / VLAN_BAND_MAP))
  74
  75 #ifdef  __cplusplus
  76 }
  77 #endif
  78
  79 #endif  /* _SYS_VLAN_H */