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libnvme(9) API Manual libnvme(9)

NAME

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

SYNOPSIS

struct nbft_hfi_info_tcp {
__u8 structure_id;
__u8 version;
__u8 trtype;
__u8 trinfo_version;
__le16 hfi_index;
__u8 flags;
__le32 pci_sbdf;
__u8 mac_addr[6];
__le16 vlan;
__u8 ip_origin;
__u8 ip_address[16];
__u8 subnet_mask_prefix;
__u8 ip_gateway[16];
__u8 reserved1;
__le16 route_metric;
__u8 primary_dns[16];
__u8 secondary_dns[16];
__u8 dhcp_server[16];
struct nbft_heap_obj host_name_obj;
__u8 reserved2[18];
};

Members

Structure ID: This field shall be set to 7h (i.e., HFI Transport Info; #NBFT_DESC_HFI_TRINFO).
Version: This field shall be set to 1h.
HFI Transport Type, see enum nbft_trtype: This field shall be set to 03h (i.e., NVMe/TCP; #NBFT_TRTYPE_TCP).
Transport Info Version: Implementations compliant to this specification shall set this field to 1h.
HFI Descriptor Index: The value of the HFI Descriptor Index field of the HFI Descriptor (see struct nbft_hfi.index) whose HFI Transport Info Descriptor Heap Object Reference field indicates this HFI Transport Info Descriptor.
HFI Transport Flags, see enum nbft_hfi_info_tcp_flags.
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 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: 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: 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: This field indicates the IPv4 or IPv6 address of this HFI. This field shall be set to a non-zero value.
Subnet Mask Prefix: This field indicates the IPv4 or IPv6 subnet mask in CIDR routing prefix notation.
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.
Reserved.
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: 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: 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: 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 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.
Reserved.
struct nbft_hfi_info_tcp October 2024