[dpdk-dev] [Bug 366] i40e PMD returns 0 for secondary invoking rx_burst on queue 0, when Primary dies

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=366

            Bug ID: 366
           Summary: i40e PMD returns 0 for secondary invoking rx_burst on
                    queue 0, when Primary dies
           Product: DPDK
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: vipin.varghese at intel.com
  Target Milestone: ---

DPDK version: dpdk-stable-19.08.1
Linux: 4.15.0-66-generic
i40e: driverversion=2.1.14-k firmware=6.01
DPDK build: make EXTRA_CFLAGS="-g -O0"

BT:
(gdb) bt
#0  i40e_recv_pkts_vec (rx_queue=0x17ff32c40, rx_pkts=0x7fffffffe010,
nb_pkts=<optimized out>)
    at
/home/saesrv02/Downloads/dpdksrc/dpdk-stable-19.08.1/drivers/net/i40e/i40e_rxtx_vec_sse.c:470
#1  0x00005555555b6d42 in rte_eth_rx_burst (nb_pkts=32, rx_pkts=0x7fffffffe010,
queue_id=0, port_id=0)
    at
/home/saesrv02/Downloads/dpdksrc/dpdk-stable-19.08.1//x86_64-native-linuxapp-gcc/include/rte_ethdev.h:4097
#2  lcore_main () at
/home/saesrv02/Downloads/dpdksrc/dpdk-stable-19.08.1/examples/skeleton/basicfwd.c:135
#3  0x00005555555b6f1d in main (argc=<optimized out>, argv=<optimized out>)
    at
/home/saesrv02/Downloads/dpdksrc/dpdk-stable-19.08.1/examples/skeleton/basicfwd.c:226

Application:
Primary: initializes X710 via i40e PMD and iterates in while(1)
Secondary: probes rx_burst successfully with packets until the primary is
killed.

test app:
CMD-1: ./build/basicfwd -w 08:00.2 -l 3
CMD-2: gdb --args ./build/basicfwd -w 08:00.2 -l 4 --proc-type=secondary

traffic generator:  ./build/l2fwd -w 83:00.2 --vdev net_tap0,iface=test =l 5
--file-prefix vipin -- -p 3 -T 1

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