[ovs-discuss] [ovs-dev] adding dpdk ports sharing same pci address to ovs-dpdk bridge

Darrell Ball dball at vmware.com
Thu Sep 7 17:47:43 UTC 2017

Adding discuss at openvswitch.org

The related changes went into 2.7

On 9/7/17, 3:51 AM, "ovs-dev-bounces at openvswitch.org on behalf of devendra rawat" <ovs-dev-bounces at openvswitch.org on behalf of devendra.rawat.singh at gmail.com> wrote:

    I have compiled and built ovs-dpdk using DPDK v17.08 and OVS v2.8.0. The
    NIC that I am using is Mellanox ConnectX-3 Pro, which is a dual port 10G
    NIC. The problem with this NIC is that it provides only one PCI address for
    both the 10G ports.
    So when I am trying to add the two DPDK ports to my br0 bridge
    # ovs-vsctl --no-wait add-port br0 dpdk0 -- set Interface dpdk0 type=dpdk
    # ovs-vsctl --no-wait add-port br0 dpdk1 -- set Interface dpdk1 type=dpdk
    The port dpdk1 is added successfully and able to transfer data, but adding
    dpdk0 to br0 fails:
    2017-09-06T14:19:20Z|00045|netdev_dpdk|INFO|Port 0: e4:1d:2d:4f:78:60
    2017-09-06T14:19:20Z|00046|bridge|INFO|bridge br0: added interface dpdk1 on
    port 1
    2017-09-06T14:19:20Z|00047|bridge|INFO|bridge br0: added interface br0 on
    port 65534
    2017-09-06T14:19:20Z|00048|dpif_netlink|WARN|Generic Netlink family
    'ovs_datapath' does not exist. The Open vSwitch kernel module is probably
    not loaded.
    2017-09-06T14:19:20Z|00049|netdev_dpdk|WARN|'dpdk0' is trying to use device
    '0002:01:00.0' which is already in use by 'dpdk1'
    2017-09-06T14:19:20Z|00050|netdev|WARN|dpdk0: could not set configuration
    (Address already in use)
    2017-09-06T14:19:20Z|00051|bridge|INFO|bridge br0: using datapath ID
    With OVS v2.6.1 I never had this problem as dpdk-devargs was not mandatory
    and just specifying port name was enough to add that port to bridge.
    Is there a way to add port both ports to bridge ?
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    dev at openvswitch.org

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