Struct Batch 

pub struct Batch { /* private fields */ }

Holds multiple packet descriptors to avoid unnecessary allocations on each Interface::read_batch() and Interface::write_batch() calls.

Implementations

impl Batch

pub fn preallocate(count: usize) -> Batch

Preallocates a batch of size count which holds the packet descriptors.

These packet descriptors are used internally by Interface::read_batch() and Interface::write_batch().

Note that you’ll only be able to receive or send as many packets as preallocated in a batch.

pub fn packet_sizes(&self) -> impl Iterator<Item = usize> + use<'_>

Retrieves packet sizes received after calling the Interface::read_batch().

Note that since a Batch abstraction lacks any information about the number of packets received, use Iterator::take() on the returned iterator in order to limit it to only useful items.

pub fn packet_sized_bufs<'a, B>( &self, bufs: &'a [B], ) -> impl Iterator<Item = &'a [u8]> + use<'a, '_, B>

where B: AsRef<[u8]>,

Given a slice of buffers used for a call to Interface::read_batch(), returns an iterator over mutable slices derived from the provided buffers, where each slice is limited to the corresponding received packet length.

This method is based on Batch::packet_sizes() and is provided for convenience.

Note that since a Batch abstraction lacks any information about the number of packets received, use Iterator::take() on the returned iterator in order to limit it to only useful items.