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  1. OpenShift Bugs
  2. OCPBUGS-3219

On 4.12 pod to pod traffics are blocked when using cx-5 ovs hw offload as default network

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      Description of problem:

      When using cx-5 as default network for pods with ovs hwoffload enabled, pod to pod traffics (same host or different hosts) are blocked.

      Version-Release number of selected component (if applicable):

      [root@openshift-qe-026 offload]# oc version
      Client Version: 4.12.0-0.nightly-2022-10-25-210451
      Kustomize Version: v4.5.7
      Server Version: 4.12.0-0.nightly-2022-10-25-210451
      Kubernetes Version: v1.25.2+4bd0702
      [root@openshift-qe-026 offload]# 
      [root@openshift-qe-026 offload]# 
      [root@openshift-qe-026 offload]# oc get csv -n openshift-sriov-network-operator
      NAME                                         DISPLAY                   VERSION               REPLACES                                     PHASE
      sriov-network-operator.4.12.0-202211021237   SR-IOV Network Operator   4.12.0-202211021237   sriov-network-operator.4.12.0-202210290517   Succeeded
      [root@openshift-qe-026 offload]# 

      How reproducible:

      1. set up baremetal cluster with cx-5 as default network interface on worker nodes.
      2. configure ovs offload following guide https://docs.openshift.com/container-platform/4.10/networking/hardware_networks/configuring-hardware-offloading.html
      
      3. create pods with ovs hwoffloaded VFs as default network interface
      
      4. ping from pod to pod failed.
      
      5. create pods without ovs hwoffload VF.
      
      6. ping from pod to pod succeed.

      Steps to Reproduce:

      1.
      2.
      3.
      

      Actual results:

      pod to pod traffic is blocked.

      Expected results:

      pod to pod traffic should pass.

      Additional info:

       

            wizhao@redhat.com William Zhao
            rhn-support-yingwang Ying Wang
            Ying Wang Ying Wang
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              Created:
              Updated:
              Resolved: