linux/include/linux/nvme-tcp.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * NVMe over Fabrics TCP protocol header.
 * Copyright (c) 2018 Lightbits Labs. All rights reserved.
 */

#ifndef _LINUX_NVME_TCP_H
#define _LINUX_NVME_TCP_H

#include <linux/nvme.h>

#define NVME_TCP_DISC_PORT …
#define NVME_TCP_ADMIN_CCSZ …
#define NVME_TCP_DIGEST_LENGTH …
#define NVME_TCP_MIN_MAXH2CDATA …

enum nvme_tcp_pfv { … };

enum nvme_tcp_tls_cipher { … };

enum nvme_tcp_fatal_error_status { … };

enum nvme_tcp_digest_option { … };

enum nvme_tcp_pdu_type { … };

enum nvme_tcp_pdu_flags { … };

/**
 * struct nvme_tcp_hdr - nvme tcp pdu common header
 *
 * @type:          pdu type
 * @flags:         pdu specific flags
 * @hlen:          pdu header length
 * @pdo:           pdu data offset
 * @plen:          pdu wire byte length
 */
struct nvme_tcp_hdr { … };

/**
 * struct nvme_tcp_icreq_pdu - nvme tcp initialize connection request pdu
 *
 * @hdr:           pdu generic header
 * @pfv:           pdu version format
 * @hpda:          host pdu data alignment (dwords, 0's based)
 * @digest:        digest types enabled
 * @maxr2t:        maximum r2ts per request supported
 */
struct nvme_tcp_icreq_pdu { … };

/**
 * struct nvme_tcp_icresp_pdu - nvme tcp initialize connection response pdu
 *
 * @hdr:           pdu common header
 * @pfv:           pdu version format
 * @cpda:          controller pdu data alignment (dowrds, 0's based)
 * @digest:        digest types enabled
 * @maxdata:       maximum data capsules per r2t supported
 */
struct nvme_tcp_icresp_pdu { … };

/**
 * struct nvme_tcp_term_pdu - nvme tcp terminate connection pdu
 *
 * @hdr:           pdu common header
 * @fes:           fatal error status
 * @fei:           fatal error information
 */
struct nvme_tcp_term_pdu { … };

/**
 * struct nvme_tcp_cmd_pdu - nvme tcp command capsule pdu
 *
 * @hdr:           pdu common header
 * @cmd:           nvme command
 */
struct nvme_tcp_cmd_pdu { … };

/**
 * struct nvme_tcp_rsp_pdu - nvme tcp response capsule pdu
 *
 * @hdr:           pdu common header
 * @hdr:           nvme-tcp generic header
 * @cqe:           nvme completion queue entry
 */
struct nvme_tcp_rsp_pdu { … };

/**
 * struct nvme_tcp_r2t_pdu - nvme tcp ready-to-transfer pdu
 *
 * @hdr:           pdu common header
 * @command_id:    nvme command identifier which this relates to
 * @ttag:          transfer tag (controller generated)
 * @r2t_offset:    offset from the start of the command data
 * @r2t_length:    length the host is allowed to send
 */
struct nvme_tcp_r2t_pdu { … };

/**
 * struct nvme_tcp_data_pdu - nvme tcp data pdu
 *
 * @hdr:           pdu common header
 * @command_id:    nvme command identifier which this relates to
 * @ttag:          transfer tag (controller generated)
 * @data_offset:   offset from the start of the command data
 * @data_length:   length of the data stream
 */
struct nvme_tcp_data_pdu { … };

nvme_tcp_pdu;

#endif /* _LINUX_NVME_TCP_H */