Hi, While I was testing vhost-user using OVS 2.5 and DPDK 2.2.0 in the host and testpmd dpdk 2.2.0 in the guest, I found that the commit below breaks the environment and no packets gets into the guest.
dpdk port --> OVS --> vhost-user --> guest --> testpmd ^--- drops here ^--- no packets here. commit 96a3d98d2cdbd897ff5ab33427aa4cfb94077665 Author: Jason Wang <jasow...@redhat.com> Date: Mon Aug 1 16:07:58 2016 +0800 vhost: don't set vring call if no vector We used to set vring call fd unconditionally even if guest driver does not use MSIX for this vritqueue at all. This will cause lots of unnecessary userspace access and other checks for drivers does not use interrupt at all (e.g virtio-net pmd). So check and clean vring call fd if guest does not use any vector for this virtqueue at all. [...] Thanks, -- Flavio