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#ifndef NVMF_SESSION_H
#define NVMF_SESSION_H

#include <stdint.h>
#include <stdbool.h>

#include "request.h"
#include "spdk/nvmf_spec.h"
#include "spdk/queue.h"

/*
 * This structure maintains local NVMf library specific connection
 * state that includes an opaque pointer back to its parent fabric
 * transport connection context.
 */
struct nvmf_connection_entry {
	void *fabric_conn;
	int is_aq_conn;

	TAILQ_ENTRY(nvmf_connection_entry) entries;
};

/* define a virtual controller limit to the number of QPs supported */
#define MAX_SESSION_IO_QUEUES 64

/*
 * This structure maintains the NVMf virtual controller session
 * state. Each NVMf session permits some number of connections.
 * At least one admin connection and additional IOQ connections.
 */
struct nvmf_session {
	struct spdk_nvmf_subsystem *subsys;

	uint16_t	cntlid;
	uint32_t	max_io_queues; /* maximum supported by backend NVMe library */
	int		active_queues;
	int		is_valid;
	struct spdk_nvmf_ctrlr_properties	vcprop;	/* virtual controller properties */
	struct spdk_nvme_ctrlr_data	vcdata; /* virtual controller data */

	TAILQ_HEAD(connection_q, nvmf_connection_entry) connections;
	int num_connections;
	int max_connections_allowed;

	struct spdk_nvmf_request *aer_req;

	TAILQ_ENTRY(nvmf_session) entries;
};

struct nvmf_session *
nvmf_connect(void *fabric_conn,
	     struct spdk_nvmf_fabric_connect_cmd *connect,
	     struct spdk_nvmf_fabric_connect_data *connect_data,
	     struct spdk_nvmf_fabric_connect_rsp *response);

void
nvmf_disconnect(void *fabric_conn, struct nvmf_session *session);

void
nvmf_init_session_properties(struct nvmf_session *session, int aq_depth);

void
nvmf_property_get(struct nvmf_session *session,
		  struct spdk_nvmf_fabric_prop_get_cmd *cmd,
		  struct spdk_nvmf_fabric_prop_get_rsp *response);

void
nvmf_property_set(struct nvmf_session *session,
		  struct spdk_nvmf_fabric_prop_set_cmd *cmd,
		  struct spdk_nvmf_fabric_prop_set_rsp *response,
		  bool *shutdown);

void
nvmf_check_io_completions(struct nvmf_session *session);

void
nvmf_check_admin_completions(struct nvmf_session *session);

#endif