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path: root/test/vpp_vhost_interface.py
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2020-04-27virtio: support virtio 1.1 packed ring in vhostSteven Luong1-2/+4
virtio 1.1 defines a number of new features. Packed ring is among the most notable and important one. It combines used, available, and descripptor rings into one. This patch provides experimental support for packed ring. To avoid regression, when packed ring is configured for the interface, it is branched to a separate RX and TX driver. Non packed ring should continue to perform as it was before. Packed ring is tested using qemu4.2 and ubuntu focal fossa (kernel 5.4.0-12) on the guess VM which supports packed ring. To configure VPP with packed ring, just add the optional keyword "packed" when creating the vhost interface. To bring up the guest VM with packed ring, add "packed=on" in the qemu launch command. To facilitate troubleshooting, also added "verbose" option in show vhost desc CLI to include displaying the indirect descriptors. Known qemu reconnect issue - If VPP is restarted, guest VMs also need to be restarted. The problem is kernel virtio-net-pci keeps track of the previous available and used indices. For virtio 1.0, these indices are in shared memory and qemu can easily copy them to pass to the backend for reconnect. For virio 1.1, these indices are no longer in shared memory. Qemu needs a new mechanism to retrieve them and it is not currently implemented. So when the protocol reconnects, qemu does not have the correct available and used indices to pass to the backend. As a result, after the reconnect, virtio-net-pci is reading the TX ring from the wrong position in the ring, not the same position which the backend is writing. Similar problem exists also in the RX. Type: feature Signed-off-by: Steven Luong <sluong@cisco.com> Change-Id: I5afc50b0bafab5a1de7a6dd10f399db3fafd144c
2019-07-31devices interface tests: vhosst GSO supportSteven Luong1-1/+3
Add gso option in create vhost interface to support gso and checksum offload. Tested with the following startup options in qemu: csum=on,gso=on,guest_csum=on,guest_tso4=on,guest_tso6=on,guest_ufo=on, host_tso4=on,host_tso6=on,host_ufo=on Type: feature Change-Id: I9ba1ee33677a694c4a0dfe66e745b098995902b8 Signed-off-by: Steven Luong <sluong@cisco.com>
2018-09-20vhost-user: Add disable feature support in apiMohsin Kazmi1-0/+5
Two flags to disable mergable rx buffers and indirect descriptors are added to api. Change-Id: Iba0ee9c48d19dfc3d3420a3fdaf44a1a1d325e99 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-06-24Revert "Revert "make test: fix broken interfaces""Klement Sekera1-3/+2
This reverts commit c8efa29b6f9a91381897b54f1147daf922ed7164. Change-Id: I1d5c5773d5f86a63073e255336bd9de628e26179 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-06-22Revert "make test: fix broken interfaces"Ole Troan1-2/+3
This reverts commit d5c60b96a3fd93916fc4af5c8d6d25625c28242e. Change-Id: I3632b9c3f76c615aee897f28f76d094e7031e689 Signed-off-by: Ole Troan <ot@cisco.com>
2018-06-22make test: fix broken interfacesKlement Sekera1-3/+2
Change-Id: I2e092774f81503e04b53cc6c6b5d357fe3fc52ab Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-04-15vhost: add vhost interface add/delete/dump API test cases to make testSteven1-0/+40
The vhost binary APIs for add/delete/dump interface were available long ago. But no unit tests were ever added in make test. This patch is to retrofit the missing unit tests. Change-Id: I489521b5ae359a1168ac5880a1f13a5f7e93ce4a Signed-off-by: Steven <sluong@cisco.com>