numam-spdk/lib/bdev/nvme/bdev_nvme.h

/*-
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 *
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#ifndef SPDK_BDEV_NVME_H
#define SPDK_BDEV_NVME_H

#include "spdk/stdinc.h"

#include "spdk/queue.h"
#include "spdk/nvme.h"
#include "spdk/bdev_module.h"

#define NVME_MAX_CONTROLLERS 1024

struct nvme_ctrlr {
	/**
	 * points to pinned, physically contiguous memory region;
	 * contains 4KB IDENTIFY structure for controller which is
	 *  target for CONTROLLER IDENTIFY command during initialization
	 */
	struct spdk_nvme_ctrlr		*ctrlr;
	struct spdk_nvme_transport_id	trid;
	char				*name;
	int				ref;
	uint32_t			num_ns;
	/** Array of bdevs indexed by nsid - 1 */
	struct nvme_bdev		*bdevs;

	struct spdk_poller		*adminq_timer_poller;

	/** linked list pointer for device list */
	TAILQ_ENTRY(nvme_ctrlr)	tailq;
};

struct nvme_bdev {
	struct spdk_bdev	disk;
	struct nvme_ctrlr	*nvme_ctrlr;
	uint32_t		id;
	bool			active;
	struct spdk_nvme_ns	*ns;
};

int spdk_bdev_nvme_create(struct spdk_nvme_transport_id *trid,
			  const char *base_name,
			  const char **names, size_t *count,
			  const char *hostnqn);
struct spdk_nvme_ctrlr *spdk_bdev_nvme_get_ctrlr(struct spdk_bdev *bdev);

/**
 * Delete NVMe controller with all bdevs on top of it.
 * Requires to pass name of NVMe controller.
 *
 * \param name NVMe controller name
 * \return zero on success, -EINVAL on wrong parameters or -ENODEV if controller is not found
 */
int spdk_bdev_nvme_delete(const char *name);

#endif // SPDK_BDEV_NVME_H