[dts] The semantics of rte_eth_rx_burst and rte_eth_rx_queue_count

[Masoud Moshref Javadi]

Hi,

I don't understand the semantics of these two methods (rte_eth_rx_burst 
and rte_eth_rx_queue_count).

For rte_eth_rx_burst with burst of B.

  * Does that mean it will not return until it receive at least B
    packets? or it just returns with whatever packets that are in the
    NIC's queue?
  * Does that mean it will wait at least x clocks before returning 0 to
    B packets?

For rte_eth_rx_queue_count:

  * Does it go to the NIC and poll the # filled entries at its queue? if
    yes, how much is its overhead?
  * Do we need to call rte_eth_rx_burst (or similar methods) to make it
    updated?


Regards