Struct BhsHeader 

pub struct BhsHeader {
    pub opcode: IscsiOpcode,
    pub immediate: bool,
    pub is_final: bool,
    pub flags: u8,
    pub total_ahs_length: u8,
    pub data_segment_length: u32,
    pub lun: u64,
    pub initiator_task_tag: u32,
    pub specific: [u8; 28],
}

iSCSI Basic Header Segment (48 bytes, RFC 7143 Section 11.2).

Fields

opcode: IscsiOpcode

Opcode (lower 6 bits) + flags (upper 2 bits).

immediate: bool

Immediate delivery flag.

is_final: bool

Final PDU flag.

flags: u8

Opcode-specific flags byte.

total_ahs_length: u8

Total AHS (Additional Header Segments) length in 4-byte words.

data_segment_length: u32

Data segment length (24-bit).

lun: u64

Logical Unit Number.

initiator_task_tag: u32

Initiator Task Tag.

specific: [u8; 28]

Opcode-specific fields (bytes 20-47, 28 bytes).

Implementations

impl BhsHeader

pub fn new(opcode: IscsiOpcode) -> Self

Create a new BHS for a given opcode.

pub fn serialize(&self) -> [u8; 48]

Serialize BHS to 48 bytes.

pub fn deserialize(data: &[u8]) -> Option<Self>

Deserialize BHS from 48 bytes.

pub fn padded_data_length(&self) -> usize

Get data segment length including padding to 4-byte boundary.

Trait Implementations

impl Clone for BhsHeader

fn clone(&self) -> BhsHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BhsHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BhsHeader

fn default() -> Self

Returns the “default value” for a type.