[dpdk-dev] [PATCH v3 0/3] add multi queue support for virtio-user

[Jianfeng Tan]

v3:
  - Fix compiling issue on 32-bit system.
  - Fix a segment fault issue when sending VHOST_USER_SET_VRING_ENABLE.
  - Squash the patch (use virtual address in mq) into "virtio for container"
    patch series.

v2:
  - Move the ctrl queue handler and multi queue logic into device emulation.
  - Rebase on newest code.

This patch set depends on below patch sets:
  - http://dpdk.org/ml/archives/dev/2016-April/038111.html
  - http://dpdk.org/ml/archives/dev/2016-April/038118.html
  - http://dpdk.org/ml/archives/dev/2016-April/038121.html

Add multi queue support for virtio-user virtual port. Patch 1 adds vhost
user adapter communications for enable/disable queues. Patch 2 adds features
check for multi queue and provides a method for virtio-user driver to
enable/disable queues. Patch 3 partially implements ctrl-q to handle
VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command from PMD.

Test case:
1. start testpmd with a vhost-user port:
 $ TESTPMD -c 0x7 -n 4 --socket-mem 1024,0 --no-pci \
      --vdev 'eth_vhost0,iface=/tmp/sock0,queues=2' \
      -- -i --rxq=2 --txq=2 --nb-cores=2
2. start testpmd with a virtio-user port:
 $ TESTPMD -c 0x70 -n 4 --socket-mem 1024,0 --no-pci --file-prefix=testpmd \
      --vdev=virtio-user0,mac=00:01:02:03:04:05,path=/tmp/sock0,queues=2 \
      -- -i --rxq=2 --txq=2 --nb-cores=2 --txqflags=0xf01 --disable-hw-vlan
3. use below commands to see if all queues are working:
 testpmd> show port xstats all


Jianfeng Tan (3):
  virtio-user: add mq in vhost user adapter
  virtio-user: add ctrl-q and mq in device emulation
  virtio-user: handle ctrl-q in driver

 drivers/net/virtio/virtio_user/vhost.h           |   5 +
 drivers/net/virtio/virtio_user/vhost_user.c      |  22 ++++
 drivers/net/virtio/virtio_user/virtio_user_dev.c | 124 +++++++++++++++++++++--
 drivers/net/virtio/virtio_user/virtio_user_dev.h |   2 +-
 drivers/net/virtio/virtio_user_ethdev.c          |  13 +++
 5 files changed, 156 insertions(+), 10 deletions(-)

-- 
2.1.4