xdp

Struct FillRing

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

The ring used to enqueue buffers for the kernel to fill in with packets received from a NIC

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impl FillRing

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

Enqueues up to num_packets to be received and filled by the kernel

§Safety

The Umem must outlive the AF_XDP socket

§Returns

The number of packets that were actually enqueued. This number can be lower than the requested num_packets if the Umem didn’t have enough open slots, or the rx ring had insufficient capacity

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