[dpdk-dev] No packets received if burst is too small in rte_eth_rx_burst

[Bruce Richardson]

On Wed, Dec 14, 2016 at 04:13:53PM +0100, tom.barbette at ulg.ac.be wrote:
> Hi list,
> 
> Between 2.2.0 and 16.04 (up to at least 16.07.2 if not current), with the XL710 controller I do not get any packet when calling rte_eth_rx_burst if nb_pkts is too small. I would say smaller than 32. The input rate is not big, if that helps. But It should definitely get at least one packet per second.
> 
> Any ideas? Is that a bug or expected behaviour? Could be caused by other ABI changes?
> 
Does this issue still occur even if you disable the vector driver in
your build-time configuration?

/Bruce