[dpdk-dev] net/mlx5: no TX in multi-process setup (testpmd working)

[Rajesh Kumar]

Hi,



DPDK: 19.11

OS: Ubuntu 18.04 (Kernel: 5.4.0-1043-azure)

Iface: Mellanox Technologies MT27710 Family [ConnectX-4 Lx Virtual Function]



We are bringing-up our dpdk based app on azure cloud, its multi-process
setup (primary does dev_configure & dev_start ) – however no packet are
getting transmitted out (Tx-packet increases upto number of descriptor and
then all further packets are txDropped)



"stats": [

    {

      "name": "rep1",

      "txPkts": 1024,           <<<<<<----------------------- it increases
upto number of tx-descriptors

      "rxPkts": 5408,

      "txBytes": 65536,

      "rxBytes": 346112,

      "txDropped": 4384,  <<<<<<--------------------- All further packets
are txDropped

      "rxDropped": 96,

      "txErrors": 0,

      "rxErrors": 0

    }

  ]



However mlx4 driver is working perfectly fine on multi-process setup. Also
testpmd working fine with mlx5. I guess problem is when we try to run in
multi-process setup ?





Thanks,

*-Rajesh*