/*-
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 *
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 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
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 *       from this software without specific prior written permission.
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 */

#ifndef SPDK_VHOST_TASK_H
#define SPDK_VHOST_TASK_H

#include "spdk/scsi.h"

/* Allocated iovec buffer len */
#define VHOST_SCSI_IOVS_LEN		128

struct spdk_vhost_dev;

struct spdk_vhost_task {
	struct spdk_scsi_task	scsi;
	struct iovec iovs[VHOST_SCSI_IOVS_LEN];

	union {
		struct virtio_scsi_cmd_resp *resp;
		struct virtio_scsi_ctrl_tmf_resp *tmf_resp;
	};

	struct spdk_vhost_scsi_dev *svdev;
	struct spdk_scsi_dev *scsi_dev;

	int req_idx;

	struct rte_vhost_vring *vq;
};

void spdk_vhost_task_put(struct spdk_vhost_task *task);
struct spdk_vhost_task *spdk_vhost_task_get(struct spdk_vhost_scsi_dev *vdev);

void spdk_vhost_dev_task_ref(struct spdk_vhost_dev *vdev);
void spdk_vhost_dev_task_unref(struct spdk_vhost_dev *vdev);

#endif /* SPDK_VHOST_TASK_H */