Struct intel_ethernet::descriptors::LegacyTxDescriptor

#[repr(C)]
pub struct LegacyTxDescriptor {
    pub phys_addr: Volatile<u64>,
    pub length: Volatile<u16>,
    pub cso: Volatile<u8>,
    pub cmd: Volatile<u8>,
    pub status: Volatile<u8>,
    pub css: Volatile<u8>,
    pub vlan: Volatile<u16>,
}

This struct is a Legacy Transmit Descriptor. It’s the descriptor type used in older Intel NICs and the E1000 driver.

Fields

phys_addr: Volatile<u64>

The starting physical address of the transmit buffer

length: Volatile<u16>

Length of the transmit buffer in bytes

cso: Volatile<u8>

Checksum offset: where to insert the checksum from the start of the packet if enabled

cmd: Volatile<u8>

Command bits

status: Volatile<u8>

Status bits

css: Volatile<u8>

Checksum start: where to begin computing the checksum, if enabled

vlan: Volatile<u16>

Vlan tags

Trait Implementations

impl Debug for LegacyTxDescriptor

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

Formats the value using the given formatter.

impl TxDescriptor for LegacyTxDescriptor

fn init(&mut self)

Initializes a transmit descriptor by clearing all of its values.

fn send( &mut self, transmit_buffer_addr: PhysicalAddress, transmit_buffer_length: u16 )

Updates the transmit descriptor to send the packet. We assume that one transmit descriptor will be used to send one packet.

fn wait_for_packet_tx(&self)

Polls the Descriptor Done bit until the packet has been sent.

impl FromBytes for LegacyTxDescriptor