Spdk/include/spdk/nvme_ocssd.h

/*-
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/**
 * \file
 * NVMe driver public API extension for Open-Channel
 */

#ifndef SPDK_NVME_OCSSD_H
#define SPDK_NVME_OCSSD_H

#include "spdk/stdinc.h"

#ifdef __cplusplus
extern "C" {
#endif

#include "spdk/nvme.h"
#include "spdk/nvme_ocssd_spec.h"

/**
 * \brief Determine if OpenChannel is supported by the given NVMe controller.
 * \param ctrlr NVMe controller to check.
 *
 * \return true if support OpenChannel
 */
bool spdk_nvme_ctrlr_is_ocssd_supported(struct spdk_nvme_ctrlr *ctrlr);

/**
 * \brief Identify geometry of the given namespace.
 * \param ctrlr NVMe controller to query.
 * \param nsid Id of the given namesapce.
 * \param payload The pointer to the payload buffer.
 * \param payload_size The size of payload buffer. Shall be multiple of 4K.
 * \param cb_fn Callback function to invoke when the feature has been retrieved.
 * \param cb_arg Argument to pass to the callback function.
 *
 * \return 0 if successfully submitted, ENOMEM if resources could not be
 * allocated for this request, EINVAL if wrong payload size.
 *
 */
int spdk_nvme_ocssd_ctrlr_cmd_geometry(struct spdk_nvme_ctrlr *ctrlr, uint32_t nsid,
				       void *payload, uint32_t payload_size,
				       spdk_nvme_cmd_cb cb_fn, void *cb_arg);

#ifdef __cplusplus
}
#endif

#endif