Struct aya::programs::Xdp

pub struct Xdp { /* fields omitted */ }

An XDP program.

eXpress Data Path (XDP) programs can be attached to the very early stages of network processing, where they can apply custom packet processing logic. When supported by the underlying network driver, XDP programs can execute directly on network cards, greatly reducing CPU load.

Examples

use aya::{Bpf, programs::{Xdp, XdpFlags}};
use std::convert::TryInto;

let program: &mut Xdp = bpf.program_mut("intercept_packets")?.try_into()?;
program.attach("eth0", XdpFlags::default())?;

Implementations

impl Xdp

pub fn load(&mut self) -> Result<(), ProgramError>

Loads the program inside the kernel.

See also Program::load.

pub fn name(&self) -> String

Returns the name of the program.

pub fn attach(
    &mut self,
    interface: &str,
    flags: XdpFlags
) -> Result<LinkRef, ProgramError>

Attaches the program to the given interface.

Errors

If the given interface does not exist ProgramError::UnknownInterface is returned.

When attaching fails, ProgramError::SyscallError is returned for kernels >= 5.9.0, and instead XdpError::NetlinkError is returned for older kernels.

Trait Implementations

impl Debug for Xdp

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

Formats the value using the given formatter.

impl ProgramFd for Xdp

fn fd(&self) -> Option<RawFd>

impl<'a> TryFrom<&'a Program> for &'a Xdp

type Error = ProgramError

The type returned in the event of a conversion error.

fn try_from(program: &'a Program) -> Result<&'a Xdp, ProgramError>

Performs the conversion.

impl<'a> TryFrom<&'a mut Program> for &'a mut Xdp

type Error = ProgramError

The type returned in the event of a conversion error.

fn try_from(program: &'a mut Program) -> Result<&'a mut Xdp, ProgramError>

Performs the conversion.