Hi, Issue Setup: DPDK 16.07 + OVS 2.6.0 + qemu 2.4.1 : PHY-VM-PHY
I am trying to upgrade from (DPDK16.04 + OVS2.5.9), to (DPDK16.07 + OVS2.6.0) for jumbo frame support. After the upgrade, all packets are getting dropped on the vhostuser port. The dpdk/vhost user ports used here has default MTU of 1500 and packets are within the MTU size. Upon few trails, i found configuring the mtu on the vhostuser port is somehow fixing the drop issue. Command used : ovs-vsctl set interface vhostuser1 mtu_request=1400(to any value works). Though even with this, if i reboot the VM, again the drop issue shows up and mtu has to be reconfigured/changed on the vhost to get the traffic working. Seems, modifying the mtu value on vhost is internally triggering something which resolves the drop issue. I upgraded the qemu to 2.6.2, which resolves the drop issue in the vhost ports without any changes to default MTU. I suspect, if its some interop issue with qemu 2.4.1, after the addition of jumbo frame support in OVS 2.6.0. Some input on how to debug this will help. is there any dependency on dpdk+ovs version with qemu version ? i wanted to try dpdk or ovs upgrade alone, instead of both, but it has some build dependencies, so i can't try that. My earlier mail on this issue - https://www.mail-archive. com/dev@openvswitch.org/msg71381.html . Regards Kapil. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
