struct nbft_hfi_info_tcp - HFI Transport Info Descriptor - NVMe/TCP (Figure 13)

structure_id Structure ID: This field shall be set to 7h (i.e., HFI Transport Info; #NBFT_DESC_HFI_TRINFO). version Version: This field shall be set to 1h. trtype HFI Transport Type, see enumnbft_trtype: This field shall be set to 03h (i.e., NVMe/TCP; #NBFT_TRTYPE_TCP). trinfo_version Transport Info Version: Implementations compliant to this specification shall set this field to 1h. hfi_index HFI Descriptor Index: The value of the HFI Descriptor Index field of the HFI Descriptor (see structnbft_hfi.index) whose HFI Transport Info Descriptor Heap Object Reference field indicates this HFI Transport Info Descriptor. flags HFI Transport Flags, see enumnbft_hfi_info_tcp_flags. pci_sbdf PCI Express Routing ID for the HFI Transport Function: This field indicates the PCI Express Routing ID as specified in the PCI Express Base Specification. mac_addr MAC Address: The MAC address of this HFI, in EUI-48TM format, as defined in the IEEE Guidelines for Use of Extended Unique Identifiers. This field shall be set to a non-zero value. vlan VLAN: If this field is set to a non-zero value, then this field contains the VLAN identifier if the VLAN associated with this HFI, as defined in IEEE 802.1q-2018. If no VLAN is associated with this HFI, then this field shall be cleared to 0h. ip_origin IP Origin: If this field is set to a non-zero value, then this field indicates the source of Ethernet L3 configuration information used by the driver for this interface. Valid values are defined in the Win 32 API: NL_PREFIX_ORIGIN enumeration specification. This field should be cleared to 0h if the IP Origin field is unused by driver. ip_address IP Address: This field indicates the IPv4 or IPv6 address of this HFI. This field shall be set to a non-zero value. subnet_mask_prefix Subnet Mask Prefix: This field indicates the IPv4 or IPv6 subnet mask in CIDR routing prefix notation. ip_gateway IP Gateway: If this field is set to a non-zero value, this field indicates the IPv4 or IPv6 address of the IP gateway for this HFI. If this field is cleared to 0h, then no IP gateway is specified. reserved1 Reserved. route_metric Route Metric: If this field is set to a non-zero value, this field indicates the cost value for the route indicated by this HF. This field contains the value utilized by the pre-OS driver when chosing among all available routes. Lower values relate to higher priority. Refer to IETF RFC 4249. If the pre-OS driver supports routing and did not configure a specific route metric for this interface, then the pre-OS driver should set this value to 500. If the pre-OS driver does not support routing, then this field should be cleared to 0h. primary_dns Primary DNS: If this field is set to a non-zero value, this field indicates the IPv4 or IPv6 address of the Primary DNS server for this HFI, if any, from byte offset 0h of the NBFT Table Header. If this field is cleared to 0h, then no Primary DNS is specified. secondary_dns Secondary DNS: If this field is set to a non-zero value, this field indicates the IPv4 or IPv6 address of the Secondary DNS server for this HFI, if any, from byte offset 0h of the NBFT Table Header. If this field is cleared to 0h, then no Secondary DNS is specified. dhcp_server DHCP Server: If the DHCP Override bit is set to 1h, then this field indicates the IPv4 or IPv6 address of the DHCP server used to assign this HFI address. If that bit is cleared to 0h, then this field is reserved. host_name_obj Host Name Heap Object Reference: If this field is set to a non-zero value, then this field indicates the location and size of a heap object containing a Host Name string. reserved2 Reserved. August 2025 struct nbft_hfi_info_tcp libnvme(2)

struct nbft_hfi_info_tcp - HFI Transport Info Descriptor - NVMe/TCP (Figure 13)

struct nbft_hfi_info_tcp { __u8structure_id;__u8version;__u8trtype;__u8trinfo_version;__le16hfi_index;__u8flags;__le32pci_sbdf;__u8mac_addr[6];__le16vlan;__u8ip_origin;__u8ip_address[16];__u8subnet_mask_prefix;__u8ip_gateway[16];__u8reserved1;__le16route_metric;__u8primary_dns[16];__u8secondary_dns[16];__u8dhcp_server[16];structnbft_heap_objhost_name_obj;__u8reserved2[18]; };