Provided by: libnvme-dev_1.10-1_amd64 
NAME
struct nbft_ssns - Subsystem Namespace (SSNS) Descriptor (Figure 15)
SYNOPSIS
struct nbft_ssns {
__u8 structure_id;
__le16 index;
__le16 flags;
__u8 trtype;
__le16 trflags;
__u8 primary_discovery_ctrl_index;
__u8 reserved1;
struct nbft_heap_obj subsys_traddr_obj;
struct nbft_heap_obj subsys_trsvcid_obj;
__le16 subsys_port_id;
__le32 nsid;
__u8 nidt;
__u8 nid[16];
__u8 security_desc_index;
__u8 primary_hfi_desc_index;
__u8 reserved2;
struct nbft_heap_obj secondary_hfi_assoc_obj;
struct nbft_heap_obj subsys_ns_nqn_obj;
struct nbft_heap_obj ssns_extended_info_desc_obj;
__u8 reserved3[62];
};
Members
structure_id
Structure ID: This field shall be set to 4h (i.e., SSNS; #NBFT_DESC_SSNS).
index SSNS Descriptor Index: This field indicates the number of this Subsystem
Namespace Descriptor in the Subsystem Namespace Descriptor List.
flags SSNS Flags, see enum nbft_ssns_flags.
trtype Transport Type, see enum nbft_trtype.
trflags Transport Specific Flags, see enum nbft_ssns_trflags.
primary_discovery_ctrl_index
Primary Discovery Controller Index: The Discovery Descriptor Index field of
the Discovery Descriptor (see struct nbft_discovery) that is associated with
this SSNS Descriptor. If a Discovery controller was used to establish this
record this value shall be set to a non-zero value. If this namespace was
associated with multiple Discovery controllers, those Discovery controllers
shall have records in the Discovery Descriptor to facilitate multi-path
rediscovery as required. If no Discovery controller was utilized to inform
this namespace record, this field shall be cleared to 0h.
reserved1 Reserved.
subsys_traddr_obj
Subsystem Transport Address Heap Object Reference: This field indicates the
location and size of a heap object containing the Subsystem Transport Address.
For IP based transports types, shall be an IP Address.
subsys_trsvcid_obj
Subsystem Transport Service Identifier Heap Object Reference: This field
indicates the location and size of a heap object containing an array of bytes
indicating the Subsystem Transport Service Identifier. See enum nbft_trtype.
subsys_port_id
Subsystem Port ID: Port in the NVM subsystem associated with this transport
address used by the pre-OS driver.
nsid Namespace ID: This field indicates the namespace identifier (NSID) of the
namespace indicated by this descriptor. This field shall be cleared to 0h if
not specified by the user. If this value is cleared to 0h, then consumers of
the NBFT shall rely on the NID.
nidt Namespace Identifier Type (NIDT): This field contains the value of the
Namespace Identifier Type (NIDT) field in the Namespace Identification
Descriptor for the namespace indicated by this descriptor. If a namespace
supports multiple NIDT entries for uniqueness, the order of preference is NIDT
field value of 3h (i.e., UUID) before 2h (i.e., NSGUID), and 2h before 1h
(i.e., EUI-64).
nid Namespace Identifier (NID): This field contains the value of the Namespace
Identifier (NID) field in the Namespace Identification Descriptor for the
namespace indicated by this descriptor.
security_desc_index
Security Profile Descriptor Index: If the Use Security Flag bit in the SSNS
Flags field is set to 1h, then this field indicates the value of the Security
Profile Descriptor Index field of the Security Profile Descriptor (see struct
nbft_security) associated with this namespace. If the Use Security Flag bit is
cleared to 0h, then no Security Profile Descriptor is associated with this
namespace and this field is reserved.
primary_hfi_desc_index
Primary HFI Descriptor Index: This field indicates the value of the HFI
Descriptor Index field of the HFI Descriptor (see struct nbft_hfi) for the
interface associated with this namespace. If multiple HFIs are associated with
this record, subsequent interfaces should be populated in the Secondary HFI
Associations field.
reserved2 Reserved.
secondary_hfi_assoc_obj
Secondary HFI Associations Heap Object Reference: If this field is set to a
non-zero value, then this field indicates an array of bytes, in which each
byte contains the value of the HFI Descriptor Index field of an HFI Descriptor
in the HFI Descriptor List. If this field is cleared to 0h, then no secondary
HFI associations are specified.
subsys_ns_nqn_obj
Subsystem and Namespace NQN Heap Object Reference: This field indicates the
location and size of a heap object containing the Subsystem and Namespace NQN.
ssns_extended_info_desc_obj
SSNS Extended Information Descriptor Heap Object Reference: If the SSNS
Extended Info In-use Flag bit is set to 1h, then this field indicates the
offset in bytes of a heap object containing an SSNS Extended Information
Descriptor (see struct nbft_ssns_ext_info) heap object from byte offset 0h of
the NBFT Table Header. If the SSNS Extended Info In-use Flag bit is cleared
to 0h, then this field is reserved.
reserved3 Reserved.