rte_eth_rx_burst nb_pkts issue

https://bugs.dpdk.org/show_bug.cgi?id=216

            Bug ID: 216
           Summary: rte_eth_rx_burst   nb_pkts   issue
           Product: DPDK
           Version: 18.11
          Hardware: All
                OS: Linux
            Status: CONFIRMED
          Severity: major
          Priority: Normal
         Component: examples
          Assignee: [email protected]
          Reporter: [email protected]

Target Milestone: ---

Environment: Linux - Ubuntu 16.04.4 LTS

NIC: Dell Ethernet Controller 10-Gigabit X540-AT2

DPDK Example: load_balancer

Function:
n_mbufs = rte_eth_rx_burst(port,queue,lp->rx.mbuf_in.array,(uint16_t) bsz_rd););

BUG: 

If set bsz_rd to 1, then rte_eth_rx_burst will ALWAYS return 0. Which means load_balancer will never receive any packet...

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