libnvme(9)                        API Manual                        libnvme(9)

NAME
       struct libnbft_subsystem_ns - Subsystem Namespace (SSNS) info

SYNOPSIS
       struct libnbft_subsystem_ns {
           int index;
           struct libnbft_discovery *discovery;
           struct libnbft_security *security;
           int num_hfis;
           struct libnbft_hfi **hfis;
           char transport[8];
           char traddr[40];
           char *trsvcid;
           __u16 subsys_port_id;
           __u32 nsid;
           enum libnbft_nid_type nid_type;
           __u8 *nid;
           char *subsys_nqn;
           __u16 trflags;
           int controller_id;
           int asqsz;
           char *dhcp_root_path_string;
           __u8 naed;
           __u8 cipeec;
           __u16 cto;
           __u8 nceec;
           __u16 flags;
        };


Members
       index       SSNS Descriptor Index in the descriptor list.

       discovery   Primary Discovery Controller associated with this SSNS
                   Descriptor.

       security    Security Profile Descriptor associated with this namespace.

       num_hfis    Number of HFIs.

       hfis        List of HFIs associated with this namespace.  Includes the
                   primary HFI at the first position and all secondary HFIs.
                   This array is null-terminated.

       transport   Transport Type string (e.g. 'tcp').

       traddr      Subsystem Transport Address.

       trsvcid     Subsystem Transport Service Identifier.

       subsys_port_id
                   The Subsystem Port ID.

       nsid        The Namespace ID of this descriptor or when nid should be
                   used instead.

       nid_type    Namespace Identifier Type, see enum libnbft_nid_type.

       nid         The Namespace Identifier value.

       subsys_nqn  Subsystem and Namespace NQN.

       trflags     Transport Specific Flags bitmask, see enum
                   nbft_ssns_trflags.

       controller_id
                   Controller ID (SSNS Extended Information Descriptor): The
                   controller ID associated with the Admin Queue or 0 if not
                   supported.

       asqsz       Admin Submission Queue Size (SSNS Extended Information
                   Descriptor) or 0 if not supported.

       dhcp_root_path_string
                   DHCP Root Path Override string (SSNS Extended Information
                   Descriptor).

       naed        Namespace Availability Enhanced Diagnostic (SSNS Extended
                   Information Descriptor). Provides additional status codes
                   from the pre-OS driver when the namespace is unavailable.
                   See enum nbft_ssns_ext_info_naed for values.  Zero
                   indicates no additional information.  Only present in NBFT
                   rev. 1.1+, zero otherwise.

       cipeec      Connect Invalid Parameters Extended Error Code (SSNS
                   Extended Information Descriptor). Provides additional error
                   detail when the pre-OS driver received a Connect Invalid
                   Parameters status.  See enum nbft_ssns_ext_info_cipeec for
                   values.  Zero indicates no extended error.  Only present in
                   NBFT rev. 1.1+, zero otherwise.

       cto         Connection Timeout in seconds (SSNS Extended Information
                   Descriptor). The timeout value used by the pre-OS driver
                   for connecting to the object specified with this SSNS
                   descriptor. A value of 0xFFFF indicates that no timeout was
                   specified.  Zero indicates either a timeout of zero seconds
                   or that the field is not present (NBFT rev. 1.0).

       nceec       Network and Connection Extended Error Code (SSNS Extended
                   Information Descriptor). Provides error codes specific to
                   network and connection errors encountered by the pre-OS
                   driver.  See enum nbft_ssns_ext_info_nceec for values.
                   Zero indicates no extended error.  Only present in NBFT
                   rev. 1.1+, zero otherwise.

       flags       SSNS Flags bitmask, see enum nbft_ssns_flags.

September 2026            struct libnbft_subsystem_ns               libnvme(9)