sodirect.h revision bbc000e522dec6271bdf858a8b013d7fc4c10ed4
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#ifndef _SOCKFS_SODIRECT_H
#define _SOCKFS_SODIRECT_H
/*
* Sodirect; used to support asynchronous DMA hardware
* (e.g. Intel's I/OAT).
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct sodirect_s {
boolean_t sod_enabled; /* sodirect_t enabled */
mblk_t *sod_uioafh; /* To be freed list head, or NULL */
mblk_t *sod_uioaft; /* To be freed list tail */
uioa_t sod_uioa; /* Pending uio_t for uioa_t use */
} sodirect_t;
/*
* Usefull macros:
*/
#define SOD_DISABLE(sodp) { \
(sodp)->sod_enabled = B_FALSE; \
}
#define SOD_SOTOSODP(so) ((sonode_t *)so)->so_direct
#define SOD_UIOAFINI(sodp) { \
if ((sodp)->sod_uioa.uioa_state & UIOA_ENABLED) { \
(sodp)->sod_uioa.uioa_state &= UIOA_CLR; \
(sodp)->sod_uioa.uioa_state |= UIOA_FINI; \
} \
}
struct sonode;
struct sodirect_s;
extern uio_t *sod_rcv_init(struct sonode *, int, struct uio **);
extern int sod_rcv_done(struct sonode *, struct uio *, struct uio *);
extern void sod_uioa_mblk_init(struct sodirect_s *, mblk_t *, size_t);
extern void sod_uioa_so_init(struct sonode *, struct sodirect_s *,
struct uio *);
extern ssize_t sod_uioa_mblk(struct sonode *, mblk_t *);
extern void sod_uioa_mblk_done(struct sodirect_s *, mblk_t *);
extern int sod_init(void);
extern void sod_sock_init(struct sonode *);
extern void sod_sock_fini(struct sonode *);
#ifdef __cplusplus
}
#endif
#endif /* _SOCKFS_SODIRECT_H */