Struct aya::maps::SockMap

pub struct SockMap<T: Deref<Target = Map>> { /* fields omitted */ }

An array of TCP or UDP sockets.

A SockMap is used to store TCP or UDP sockets. eBPF programs can then be attached to the map to inspect, filter or redirect network buffers on those sockets.

A SockMap can also be used to redirect packets to sockets contained by the map using bpf_redirect_map(), bpf_sk_redirect_map() etc.

Examples

use std::convert::{TryFrom, TryInto};
use aya::maps::SockMap;
use aya::programs::SkSkb;

let intercept_ingress = SockMap::try_from(bpf.map_mut("INTERCEPT_INGRESS")?)?;
let prog: &mut SkSkb = bpf.program_mut("intercept_ingress_packet")?.try_into()?;
prog.load()?;
prog.attach(&intercept_ingress)?;

Implementations

impl<T: Deref<Target = Map>> SockMap<T>

pub unsafe fn indices(&self) -> MapKeys<'_, u32>

An iterator over the indices of the array that point to a program. The iterator item type is Result<u32, MapError>.

impl<T: Deref<Target = Map> + DerefMut<Target = Map>> SockMap<T>

pub fn set<I: AsRawFd>(
    &mut self,
    index: u32,
    socket: &I,
    flags: u64
) -> Result<(), MapError>

Stores a socket into the map.

pub fn clear_index(&mut self, index: &u32) -> Result<(), MapError>

Removes the socket stored at index from the map.

Trait Implementations

impl<T: Deref<Target = Map> + DerefMut<Target = Map>> SocketMap for SockMap<T>

fn fd_or_err(&self) -> Result<RawFd, MapError>

impl TryFrom<MapRef> for SockMap<MapRef>

type Error = MapError

The type returned in the event of a conversion error.

fn try_from(a: MapRef) -> Result<SockMap<MapRef>, MapError>

Performs the conversion.

impl TryFrom<MapRefMut> for SockMap<MapRefMut>

type Error = MapError

The type returned in the event of a conversion error.

fn try_from(a: MapRefMut) -> Result<SockMap<MapRefMut>, MapError>

Performs the conversion.