Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200/* 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 8009#define NVME_TCP_ADMIN_CCSZ SZ_8K#define NVME_TCP_DIGEST_LENGTH 4#define NVME_TCP_MIN_MAXH2CDATA 4096#define NVME_TCP_MIN_C2HTERM_PLEN 24#define NVME_TCP_MAX_C2HTERM_PLEN 152
enum nvme_tcp_pfv { NVME_TCP_PFV_1_0 = 0x0,};
enum nvme_tcp_tls_cipher { NVME_TCP_TLS_CIPHER_INVALID = 0, NVME_TCP_TLS_CIPHER_SHA256 = 1, NVME_TCP_TLS_CIPHER_SHA384 = 2,};
enum nvme_tcp_fatal_error_status { NVME_TCP_FES_INVALID_PDU_HDR = 0x01, NVME_TCP_FES_PDU_SEQ_ERR = 0x02, NVME_TCP_FES_HDR_DIGEST_ERR = 0x03, NVME_TCP_FES_DATA_OUT_OF_RANGE = 0x04, NVME_TCP_FES_R2T_LIMIT_EXCEEDED = 0x05, NVME_TCP_FES_DATA_LIMIT_EXCEEDED = 0x05, NVME_TCP_FES_UNSUPPORTED_PARAM = 0x06,};
enum nvme_tcp_digest_option { NVME_TCP_HDR_DIGEST_ENABLE = (1 << 0), NVME_TCP_DATA_DIGEST_ENABLE = (1 << 1),};
enum nvme_tcp_pdu_type { nvme_tcp_icreq = 0x0, nvme_tcp_icresp = 0x1, nvme_tcp_h2c_term = 0x2, nvme_tcp_c2h_term = 0x3, nvme_tcp_cmd = 0x4, nvme_tcp_rsp = 0x5, nvme_tcp_h2c_data = 0x6, nvme_tcp_c2h_data = 0x7, nvme_tcp_r2t = 0x9,};
enum nvme_tcp_pdu_flags { NVME_TCP_F_HDGST = (1 << 0), NVME_TCP_F_DDGST = (1 << 1), NVME_TCP_F_DATA_LAST = (1 << 2), NVME_TCP_F_DATA_SUCCESS = (1 << 3),};
/** * 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 { __u8 type; __u8 flags; __u8 hlen; __u8 pdo; __le32 plen;};
/* * 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_hdr hdr; __le16 pfv; __u8 hpda; __u8 digest; __le32 maxr2t; __u8 rsvd2[112];};
/* * 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_hdr hdr; __le16 pfv; __u8 cpda; __u8 digest; __le32 maxdata; __u8 rsvd[112];};
/* * struct nvme_tcp_term_pdu - nvme tcp terminate connection pdu * * @hdr: pdu common header * @fes: fatal error status * @feil: fatal error information (low 16 bits) * @feih: fatal error information (high 16 bits) */struct nvme_tcp_term_pdu { struct nvme_tcp_hdr hdr; __le16 fes; __le16 feil; __le16 feiu; __u8 rsvd[10];};
/* * 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_hdr hdr; struct nvme_command cmd;};
/* * struct nvme_tcp_rsp_pdu - nvme tcp response capsule pdu * * @hdr: nvme-tcp generic header * @cqe: nvme completion queue entry */struct nvme_tcp_rsp_pdu { struct nvme_tcp_hdr hdr; struct nvme_completion cqe;};
/* * 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_hdr hdr; __u16 command_id; __u16 ttag; __le32 r2t_offset; __le32 r2t_length; __u8 rsvd[4];};
/* * 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 { struct nvme_tcp_hdr hdr; __u16 command_id; __u16 ttag; __le32 data_offset; __le32 data_length; __u8 rsvd[4];};
union nvme_tcp_pdu { struct nvme_tcp_icreq_pdu icreq; struct nvme_tcp_icresp_pdu icresp; struct nvme_tcp_cmd_pdu cmd; struct nvme_tcp_rsp_pdu rsp; struct nvme_tcp_r2t_pdu r2t; struct nvme_tcp_data_pdu data;};
#endif /* _LINUX_NVME_TCP_H */