usr/src/uts/common/sys/dktp/flowctrl.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_DKTP_FLOWCTRL_H
  28 #define _SYS_DKTP_FLOWCTRL_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 struct  flc_obj {
  37         opaque_t                flc_data;
  38         struct flc_objops       *flc_ops;
  39 };
  40
  41 struct  flc_objops {
  42         int     (*flc_init)(opaque_t, opaque_t, opaque_t, void *);
  43         int     (*flc_free)(struct flc_obj *);
  44         int     (*flc_enque)(opaque_t, struct buf *);
  45         int     (*flc_deque)(opaque_t, struct buf *);
  46         int     (*flc_start_kstat)(opaque_t, char *, int);
  47         int     (*flc_stop_kstat)(opaque_t);
  48         void    *flc_resv[2];
  49 };
  50
  51 struct flc_obj *dsngl_create();
  52 struct flc_obj *dmult_create();
  53 struct flc_obj *duplx_create();
  54 struct flc_obj *adapt_create();
  55
  56 #define FLC_INIT(X, tgcomobjp, queobjp, lkarg) \
  57         (*((struct flc_obj *)(X))->flc_ops->flc_init) \
  58         (((struct flc_obj *)(X))->flc_data, (tgcomobjp), (queobjp), (lkarg))
  59 #define FLC_FREE(X) (*((struct flc_obj *)(X))->flc_ops->flc_free) ((X))
  60 #define FLC_ENQUE(X, bp) (*((struct flc_obj *)(X))->flc_ops->flc_enque) \
  61         (((struct flc_obj *)(X))->flc_data, (bp))
  62 #define FLC_DEQUE(X, bp) (*((struct flc_obj *)(X))->flc_ops->flc_deque) \
  63         (((struct flc_obj *)(X))->flc_data, (bp))
  64 #define FLC_START_KSTAT(X, devtype, instance) \
  65         (*((struct flc_obj *)(X))->flc_ops->flc_start_kstat)\
  66         (((struct flc_obj *)(X))->flc_data, (devtype), (instance))
  67 #define FLC_STOP_KSTAT(X) (*((struct flc_obj *)(X))->flc_ops->flc_stop_kstat) \
  68         (((struct flc_obj *)(X))->flc_data)
  69
  70 #ifdef  __cplusplus
  71 }
  72 #endif
  73
  74 #endif  /* _SYS_DKTP_FLOWCTRL_H */