libnvme(2)

NAME
struct nbft_control - NBFT Table - Control Descriptor (Figure 8)

SYNOPSIS
struct nbft_control {
__u8 structure_id;
__u8 major_revision;
__u8 minor_revision;
__u8 reserved1;
__le16 csl;
__u8 flags;
__u8 reserved2;
struct nbft_heap_obj hdesc;
__u8 hsv;
__u8 reserved3;
__le32 hfio;
__le16 hfil;
__u8 hfiv;
__u8 num_hfi;
__le32 ssnso;
__le16 ssnsl;
__u8 ssnsv;
__u8 num_ssns;
__le32 seco;
__le16 secl;
__u8 secv;
__u8 num_sec;
__le32 disco;
__le16 discl;
__u8 discv;
__u8 num_disc;
__u8 reserved4[16];
};

Members

structure_id
    Structure ID: This field specifies the element (refer to enum nbft_desc_type). This field shall be set to 1h (i.e., Control, #NBFT_DESC_CONTROL).

major_revision
    Major Revision: The major revision of the structure corresponding to the Signature field. Larger major revision numbers should not be assumed backward compatible to lower major revision numbers with the same signature.

minor_revision
    Minor Revision: The minor revision of the structure corresponding to the signature field. If the major revision numbers are the same, any minor revision number differences shall be backwards compatible with the same signature.

reserved1
    Reserved.

csl Control Structure Length (CSL): This field indicates the length in bytes of the Control Descriptor.

flags
    Flags, see enum nbft_control_flags.

reserved2
    Reserved.

hdesc
    Host Descriptor (HDESC): This field indicates the location and length of the Host Descriptor (see struct nbft_host).

hsv Host Descriptor Version (HSV): This field indicates the version of the Host Descriptor.

reserved3
    Reserved.

hfio
    HFI Descriptor List Offset (HFIO): If this field is set to a non-zero value, then this field indicates the offset in bytes of the HFI Descriptor List, if any, from byte offset 0h of the NBFT Table Header. If the num_hfi field is cleared to 0h, then this field is reserved.

hfil
    HFI Descriptor Length (HFIL): This field indicates the length in bytes of each HFI Descriptor, if any. If the num_hfi field is cleared to 0h, then this field is reserved.

hfiv
    HFI Descriptor Version (HFIV): This field indicates the version of each HFI Descriptor.

num_hfi
    Number of Host Fabric Interface Descriptors (NumHFI): This field indicates the number of HFI Descriptors (see struct nbft_hfi) in the HFI Descriptor List, if any. If no interfaces have been configured, then this field shall be cleared to 0h.

ssnso
    SSNS Descriptor List Offset (SSNSO):: This field indicates the offset in bytes of the SSNS Descriptor List, if any, from byte offset 0h of the NBFT Table Header. If the num_ssns field is cleared to 0h, then this field is reserved.

ssnsl
    SSNS Descriptor Length (SSNSL): This field indicates the length in bytes of each SSNS Descriptor, if any. If the num_ssns field is cleared to 0h, then this field is reserved.

ssnsv
    SSNS Descriptor Version (SSNSV): This field indicates the version of the SSNS Descriptor.

num_ssns
    Number of Subsystem and Namespace Descriptors (NumSSNS): This field indicates the number of Subsystem Namespace (SSNS) Descriptors (see struct nbft_ssns) in the SSNS Descriptor List, if any.

seco
    Security Profile Descriptor List Offset (SECO): This field indicates the offset in bytes of the Security Profile Descriptor List, if any, from byte offset 0h of the NBFT Table Header. If the num_sec field is cleared to 0h, then this field is reserved.

secl
    Security Profile Descriptor Length (SECL): This field indicates the length in bytes of each Security Profile Descriptor, if any. If the num_sec field is cleared to 0h, then this field is reserved.

secv
    Security Profile Descriptor Version (SECV): This field indicates the version of the Security Profile Descriptor.

num_sec
    Number of Security Profile Descriptors (NumSec): This field indicates the number of Security Profile Descriptors (see struct nbft_security), if any, in the Security Profile Descriptor List.

disco
    Discovery Descriptor Offset (DISCO): This field indicates the offset in bytes of the Discovery Descriptor List, if any, from byte offset 0h of the NBFT Table Header. If the num_disc field is cleared to 0h, then this field is reserved.

discl
    Discovery Descriptor Length (DISCL): This field indicates the length in bytes of each Discovery Descriptor, if any. If the num_disc field is cleared to 0h, then this field is reserved.

discv
    Discovery Descriptor Version (DISCV): This field indicates the version of the Discovery Descriptor.

num_disc
    Number of Discovery Descriptors (NumDisc): This field indicates the number of Discovery Descriptors (see struct nbft_discovery), if any, in the Discovery Descriptor List, if any.

reserved4
    Reserved.