i40e_alloc_rx_buffers
err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
i40e_alloc_rx_buffers(rx_ring, cleaned_count);
bool i40e_alloc_rx_buffers(struct i40e_ring *rxr, u16 cleaned_count);