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nvme-fc: Sync nvme-fc header to FC-NVME-2 

Sync the header to FC-NVME-2 r1.06 (T11-2019-00210-v001).

Includes some minor mods where pre-release field names changed
by the time the spec was released.

Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
James Smart 2019-09-27 14:51:34 -07:00 committed by Jens Axboe
parent efcfec579f
commit f165836142
1 changed files with 137 additions and 45 deletions
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182
include/linux/nvme-fc.h
View File

@ -4,33 +4,60 @@
*/
/*
* This file contains definitions relative to FC-NVME r1.14 (16-020vB).
* The fcnvme_lsdesc_cr_assoc_cmd struct reflects expected r1.16 content.
* This file contains definitions relative to FC-NVME-2 r1.06
* (T11-2019-00210-v001).
*/
#ifndef _NVME_FC_H
#define _NVME_FC_H 1
#include <uapi/scsi/fc/fc_fs.h>
#define NVME_CMD_SCSI_ID 0xFD
#define NVME_CMD_FORMAT_ID 0xFD
#define NVME_CMD_FC_ID FC_TYPE_NVME
/* FC-NVME Cmd IU Flags */
#define FCNVME_CMD_FLAGS_DIRMASK 0x03
#define FCNVME_CMD_FLAGS_WRITE 0x01
#define FCNVME_CMD_FLAGS_READ 0x02
enum {
FCNVME_CMD_FLAGS_DIRMASK = 0x03,
FCNVME_CMD_FLAGS_WRITE = (1 << 0),
FCNVME_CMD_FLAGS_READ = (1 << 1),
FCNVME_CMD_FLAGS_PICWP = (1 << 2),
};
enum {
FCNVME_CMD_CAT_MASK = 0x0F,
FCNVME_CMD_CAT_ADMINQ = 0x01,
FCNVME_CMD_CAT_CSSMASK = 0x07,
FCNVME_CMD_CAT_CSSFLAG = 0x08,
};
static inline __u8 fccmnd_set_cat_admin(__u8 rsv_cat)
{
return (rsv_cat & ~FCNVME_CMD_CAT_MASK) | FCNVME_CMD_CAT_ADMINQ;
}
static inline __u8 fccmnd_set_cat_css(__u8 rsv_cat, __u8 css)
{
return (rsv_cat & ~FCNVME_CMD_CAT_MASK) | FCNVME_CMD_CAT_CSSFLAG |
(css & FCNVME_CMD_CAT_CSSMASK);
}
struct nvme_fc_cmd_iu {
__u8 scsi_id;
__u8 format_id;
__u8 fc_id;
__be16 iu_len;
__u8 rsvd4[3];
__u8 rsvd4[2];
__u8 rsv_cat;
__u8 flags;
__be64 connection_id;
__be32 csn;
__be32 data_len;
struct nvme_command sqe;
__be32 rsvd88[2];
__u8 dps;
__u8 lbads;
__be16 ms;
__be32 rsvd92;
};
#define NVME_FC_SIZEOF_ZEROS_RSP 12
@ -38,11 +65,12 @@ struct nvme_fc_cmd_iu {
enum {
FCNVME_SC_SUCCESS = 0,
FCNVME_SC_INVALID_FIELD = 1,
FCNVME_SC_INVALID_CONNID = 2,
/* reserved 2 */
FCNVME_SC_ILL_CONN_PARAMS = 3,
};
struct nvme_fc_ersp_iu {
__u8 status_code;
__u8 ersp_result;
__u8 rsvd1;
__be16 iu_len;
__be32 rsn;
@ -53,14 +81,44 @@ struct nvme_fc_ersp_iu {
};
/* FC-NVME Link Services */
#define FCNVME_NVME_SR_OPCODE 0x01
struct nvme_fc_nvme_sr_iu {
__u8 fc_id;
__u8 opcode;
__u8 rsvd2;
__u8 retry_rctl;
__be32 rsvd4;
};
enum {
FCNVME_SRSTAT_ACC = 0x0,
FCNVME_SRSTAT_INV_FCID = 0x1,
/* reserved 0x2 */
FCNVME_SRSTAT_LOGICAL_ERR = 0x3,
FCNVME_SRSTAT_INV_QUALIF = 0x4,
FCNVME_SRSTAT_UNABL2PERFORM = 0x9,
};
struct nvme_fc_nvme_sr_rsp_iu {
__u8 fc_id;
__u8 opcode;
__u8 rsvd2;
__u8 status;
__be32 rsvd4;
};
/* FC-NVME Link Services - LS cmd values (w0 bits 31:24) */
enum {
FCNVME_LS_RSVD = 0,
FCNVME_LS_RJT = 1,
FCNVME_LS_ACC = 2,
FCNVME_LS_CREATE_ASSOCIATION = 3,
FCNVME_LS_CREATE_CONNECTION = 4,
FCNVME_LS_DISCONNECT = 5,
FCNVME_LS_CREATE_ASSOCIATION = 3, /* Create Association */
FCNVME_LS_CREATE_CONNECTION = 4, /* Create I/O Connection */
FCNVME_LS_DISCONNECT_ASSOC = 5, /* Disconnect Association */
FCNVME_LS_DISCONNECT_CONN = 6, /* Disconnect Connection */
};
/* FC-NVME Link Service Descriptors */
@ -117,14 +175,17 @@ enum fcnvme_ls_rjt_reason {
FCNVME_RJT_RC_UNSUP = 0x0b,
/* command not supported */
FCNVME_RJT_RC_INPROG = 0x0e,
/* command already in progress */
FCNVME_RJT_RC_INV_ASSOC = 0x40,
/* Invalid Association ID*/
/* Invalid Association ID */
FCNVME_RJT_RC_INV_CONN = 0x41,
/* Invalid Connection ID*/
/* Invalid Connection ID */
FCNVME_RJT_RC_INV_PARAM = 0x42,
/* Invalid Parameters */
FCNVME_RJT_RC_INSUF_RES = 0x43,
/* Insufficient Resources */
FCNVME_RJT_RC_VENDOR = 0xff,
/* vendor specific error */
@ -138,14 +199,32 @@ enum fcnvme_ls_rjt_explan {
FCNVME_RJT_EXP_OXID_RXID = 0x17,
/* invalid OX_ID-RX_ID combination */
FCNVME_RJT_EXP_INSUF_RES = 0x29,
/* insufficient resources */
FCNVME_RJT_EXP_UNAB_DATA = 0x2a,
/* unable to supply requested data */
FCNVME_RJT_EXP_INV_LEN = 0x2d,
/* Invalid payload length */
FCNVME_RJT_EXP_INV_ERSP_RAT = 0x40,
/* Invalid NVMe_ERSP Ratio */
FCNVME_RJT_EXP_INV_CTLR_ID = 0x41,
/* Invalid Controller ID */
FCNVME_RJT_EXP_INV_QUEUE_ID = 0x42,
/* Invalid Queue ID */
FCNVME_RJT_EXP_INV_SQSIZE = 0x43,
/* Invalid Submission Queue Size */
FCNVME_RJT_EXP_INV_HOSTID = 0x44,
/* Invalid HOST ID */
FCNVME_RJT_EXP_INV_HOSTNQN = 0x45,
/* Invalid HOSTNQN */
FCNVME_RJT_EXP_INV_SUBNQN = 0x46,
/* Invalid SUBNQN */
};
/* FCNVME_LSDESC_RJT */
@ -209,21 +288,11 @@ struct fcnvme_lsdesc_cr_conn_cmd {
__be32 rsvd52;
};
/* Disconnect Scope Values */
enum {
FCNVME_DISCONN_ASSOCIATION = 0,
FCNVME_DISCONN_CONNECTION = 1,
};
/* FCNVME_LSDESC_DISCONN_CMD */
struct fcnvme_lsdesc_disconn_cmd {
__be32 desc_tag; /* FCNVME_LSDESC_xxx */
__be32 desc_len;
u8 rsvd8[3];
/* note: scope is really a 1 bit field */
u8 scope; /* FCNVME_DISCONN_xxx */
__be32 rsvd12;
__be64 id;
__be32 rsvd8[4];
};
/* FCNVME_LSDESC_CONN_ID */
@ -242,9 +311,14 @@ struct fcnvme_lsdesc_assoc_id {
/* r_ctl values */
enum {
FCNVME_RS_RCTL_DATA = 1,
FCNVME_RS_RCTL_XFER_RDY = 5,
FCNVME_RS_RCTL_RSP = 8,
FCNVME_RS_RCTL_CMND = 0x6,
FCNVME_RS_RCTL_DATA = 0x1,
FCNVME_RS_RCTL_CONF = 0x3,
FCNVME_RS_RCTL_SR = 0x9,
FCNVME_RS_RCTL_XFER_RDY = 0x5,
FCNVME_RS_RCTL_RSP = 0x7,
FCNVME_RS_RCTL_ERSP = 0x8,
FCNVME_RS_RCTL_SR_RSP = 0xA,
};
@ -264,7 +338,10 @@ struct fcnvme_ls_acc_hdr {
struct fcnvme_ls_rqst_w0 w0;
__be32 desc_list_len;
struct fcnvme_lsdesc_rqst rqst;
/* Followed by cmd-specific ACC descriptors, see next definitions */
/*
* Followed by cmd-specific ACCEPT descriptors, see xxx_acc
* definitions below
*/
};
/* FCNVME_LS_CREATE_ASSOCIATION */
@ -302,25 +379,39 @@ struct fcnvme_ls_cr_conn_acc {
struct fcnvme_lsdesc_conn_id connectid;
};
/* FCNVME_LS_DISCONNECT */
struct fcnvme_ls_disconnect_rqst {
/* FCNVME_LS_DISCONNECT_ASSOC */
struct fcnvme_ls_disconnect_assoc_rqst {
struct fcnvme_ls_rqst_w0 w0;
__be32 desc_list_len;
struct fcnvme_lsdesc_assoc_id associd;
struct fcnvme_lsdesc_disconn_cmd discon_cmd;
};
struct fcnvme_ls_disconnect_acc {
struct fcnvme_ls_disconnect_assoc_acc {
struct fcnvme_ls_acc_hdr hdr;
};
/* FCNVME_LS_DISCONNECT_CONN */
struct fcnvme_ls_disconnect_conn_rqst {
struct fcnvme_ls_rqst_w0 w0;
__be32 desc_list_len;
struct fcnvme_lsdesc_assoc_id associd;
struct fcnvme_lsdesc_disconn_cmd connectid;
};
struct fcnvme_ls_disconnect_conn_acc {
struct fcnvme_ls_acc_hdr hdr;
};
/*
* Yet to be defined in FC-NVME:
* Default R_A_TOV is pulled in from fc_fs.h but needs conversion
* from ms to seconds for our use.
*/
#define NVME_FC_CONNECT_TIMEOUT_SEC 2 /* 2 seconds */
#define NVME_FC_LS_TIMEOUT_SEC 2 /* 2 seconds */
#define NVME_FC_TGTOP_TIMEOUT_SEC 2 /* 2 seconds */
#define FC_TWO_TIMES_R_A_TOV (2 * (FC_DEF_R_A_TOV / 1000))
#define NVME_FC_LS_TIMEOUT_SEC FC_TWO_TIMES_R_A_TOV
#define NVME_FC_TGTOP_TIMEOUT_SEC FC_TWO_TIMES_R_A_TOV
/*
* TRADDR string must be of form "nn-<16hexdigits>:pn-<16hexdigits>"
@ -328,6 +419,7 @@ struct fcnvme_ls_disconnect_acc {
* infront of the <16hexdigits>. Without is considered the "min" string
* and with is considered the "max" string. The hexdigits may be upper
* or lower case.
* Note: FC-NVME-2 standard requires a "0x" prefix.
*/
#define NVME_FC_TRADDR_NNLEN 3 /* "?n-" */
#define NVME_FC_TRADDR_OXNNLEN 5 /* "?n-0x" */