Struct intel_ethernet::descriptors::LegacyRxDescriptor

#[repr(C)]
pub struct LegacyRxDescriptor {
    pub phys_addr: Volatile<u64>,
    pub length: ReadOnly<u16>,
    pub checksum: ReadOnly<u16>,
    pub status: Volatile<u8>,
    pub errors: ReadOnly<u8>,
    pub vlan: ReadOnly<u16>,
}

This struct is a Legacy Receive Descriptor. The driver writes to the upper 64 bits, and the NIC writes to the lower 64 bits. 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 receive buffer

length: ReadOnly<u16>

Length of the receive buffer in bytes

checksum: ReadOnly<u16>

Checksum value of the packet after the IP header till the end

status: Volatile<u8>

Status bits which tell if the descriptor has been used

errors: ReadOnly<u8>

Receive errors

vlan: ReadOnly<u16>

Vlan tags

Trait Implementations

impl Debug for LegacyRxDescriptor

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

Formats the value using the given formatter.

impl RxDescriptor for LegacyRxDescriptor

fn init(&mut self, packet_buffer_address: PhysicalAddress)

Initializes a receive descriptor by clearing its status and setting the descriptor’s physical address.

fn set_packet_address(&mut self, packet_buffer_address: PhysicalAddress)

Updates the descriptor’s physical address.

fn reset_status(&mut self)

Clears the status bits of the descriptor.

fn descriptor_done(&self) -> bool

Returns true if the descriptor has a received packet copied to its buffer.

fn end_of_packet(&self) -> bool

Returns true if the descriptor’s packet buffer is the last in a frame.

fn length(&self) -> u64

The length of the packet in the descriptor’s packet buffer.

impl FromBytes for LegacyRxDescriptor