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

[RajeshKumar Kalidass <rajesh.kalidass@gigamon.com>]

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

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