Struct TxMetadata 

pub struct TxMetadata {
    pub id: TxId,
    pub segment_count: u8,
    pub flags: TxFlags,
    pub len: u32,
    pub l2_len: u8,
    pub l3_len: u16,
    pub l4_len: u8,
    pub transport_header_offset: u16,
    pub max_segment_size: u16,
    pub vlan: Option<VlanMetadata>,
}

Transmit packet metadata.

Fields

id: TxId

The transmit ID.

segment_count: u8

The number of segments, including this one.

flags: TxFlags

Flags.

len: u32

The total length of the packet in bytes.

l2_len: u8

The length of the Ethernet frame header. Only guaranteed to be set if various offload flags are set.

l3_len: u16

The length of the IP header. Only guaranteed to be set if various offload flags are set.

l4_len: u8

The length of the TCP header. Only guaranteed to be set if various offload flags are set.

transport_header_offset: u16

The offset into the buffer where the L4 header begins (TCP or UDP). Only expected to be set if offload (checksum and/or segmentation) flags are set.

max_segment_size: u16

The maximum segment size, used for segmentation offload (TSO or USO). Only guaranteed to be set if TxFlags::offload_tcp_segmentation or TxFlags::offload_udp_segmentation is set.

vlan: Option<VlanMetadata>

Information about 802.1Q VLAN tagging. When a vlan is in use, this structure is populated. Only applies when traffic is being sent over an L2 connection, so L3-only or above traffic will not use this option.

Trait Implementations

impl Clone for TxMetadata

fn clone(&self) -> TxMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TxMetadata

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

Formats the value using the given formatter.

impl Default for TxMetadata

fn default() -> Self

Returns the “default value” for a type.