Struct Xdp

pub struct Xdp<'fd> { /* private fields */ }

Represents a XDP program.

This struct exposes operations to attach, detach and query a XDP program

Implementations

impl<'fd> Xdp<'fd>

pub fn new(fd: BorrowedFd<'fd>) -> Self

Create a new XDP instance with the given file descriptor of the SEC("xdp") Program.

pub fn attach(&self, ifindex: i32, flags: XdpFlags) -> Result<()>

Attach the XDP program to the given interface to start processing the packets

Notes

Once a program is attached, it will outlive the userspace program. Make sure to detach the program if its not desired.

pub fn detach(&self, ifindex: i32, flags: XdpFlags) -> Result<()>

Detach the XDP program from the interface

pub fn query(&self, ifindex: i32, flags: XdpFlags) -> Result<bpf_xdp_query_opts>

Query to inspect the program

pub fn query_id(&self, ifindex: i32, flags: XdpFlags) -> Result<u32>

Query to inspect the program identifier (prog_id)

pub fn replace(&self, ifindex: i32, old_prog_fd: BorrowedFd<'_>) -> Result<()>

Replace an existing xdp program (identified by old_prog_fd) with this xdp program

Trait Implementations

impl<'fd> Debug for Xdp<'fd>

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

Formats the value using the given formatter.