adapters/iscsi/iscsi_thread.h

/*
 * 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.
 */

#ifndef _ISCSI_THREAD_H
#define _ISCSI_THREAD_H

/*
 * Block comment which describes the contents of this file.
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>

#define SIG_ISCSI_THREAD        0x54485244

#define ISCSI_TH_MAX_NAME_LEN       32

#define ISCSI_THREAD_SIGNAL_KILL    0x00000001
#define ISCSI_THREAD_SIGNAL_WAKEUP  0x00000002

#define ISCSI_THREAD_STATE_STOPPED  0x00000001
#define ISCSI_THREAD_STATE_STOPPING 0x00000002
#define ISCSI_THREAD_STATE_STARTED  0x00000004
#define ISCSI_THREAD_STATE_STARTING 0x00000008
#define ISCSI_THREAD_STATE_DESTROYING   0x00000010

struct _iscsi_thread;

typedef void (*iscsi_thread_ep_t)(struct _iscsi_thread *, void *);

typedef struct _iscsi_thread {
    uint32_t        signature;
    uint32_t        state;
    ddi_taskq_t     *tq;
    iscsi_thread_ep_t   entry_point;
    void            *arg;
    dev_info_t      *dip;
    struct {
        uint32_t    bitmap;
        kmutex_t    mtx;
        kcondvar_t  cdv;
    } sign;
    struct {
        kmutex_t    mtx;
    } mgnt;
} iscsi_thread_t;

iscsi_thread_t *
iscsi_thread_create(
    dev_info_t      *dip,
    char            *name,
    iscsi_thread_ep_t   entry_point,
    void            *arg
);

void
iscsi_thread_destroy(
    iscsi_thread_t      *thread
);

boolean_t
iscsi_thread_start(
    iscsi_thread_t      *thread
);

boolean_t
iscsi_thread_stop(
    iscsi_thread_t      *thread
);

void
iscsi_thread_send_kill(
    iscsi_thread_t      *thread
);

boolean_t
iscsi_thread_send_wakeup(
    iscsi_thread_t      *thread
);

int
iscsi_thread_wait(
    iscsi_thread_t      *thread,
    clock_t         timeout
);

uint32_t
iscsi_thread_check_signals(
    iscsi_thread_t      *thread
);

#ifdef __cplusplus
}
#endif

#endif /* _ISCSI_THREAD_H */