Struct BpfFilter 

pub struct BpfFilter { /* private fields */ }

A classic BPF filter program for kernel-level packet filtering.

Generate instructions with tcpdump -dd "expression". For eBPF, use aya and attach to the socket fd via AsFd.

Implementations

impl BpfFilter

pub fn new(instructions: Vec<BpfInsn>) -> Self

Create a filter from raw BPF instructions.

pub fn instructions(&self) -> &[BpfInsn]

The instruction slice.

pub fn len(&self) -> usize

Number of instructions.

pub fn is_empty(&self) -> bool

Whether the filter has no instructions.

Trait Implementations

impl Clone for BpfFilter

fn clone(&self) -> BpfFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BpfFilter

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

Formats the value using the given formatter.