xdp

Struct CompletionRing

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pub struct CompletionRing { /* private fields */ }
Expand description

The ring used to dequeue buffers that the kernel has finished sending

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impl CompletionRing

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pub fn dequeue(&mut self, umem: &mut Umem, num_packets: usize) -> usize

Dequeues up to num_packets and makes them available for use again

§Returns

The number of packets that were actually dequeued.

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pub fn dequeue_with_timestamps( &mut self, umem: &mut Umem, timestamps: &mut [u64], ) -> usize

The same as Self::dequeue, except the timestamp each packet was transmitted is written to the provided slice.

Note this requires that crate::Packet::set_tx_metadata was called

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