[dpdk-dev] [PATCH 0/5] Interrupt mode for virtio PMD

[Jianfeng Tan]

First of all, interrupt mode here means per-queue Rx interrupt
support.

Historically, virtio PMD can only be binded to igb_uio or
uio_pci_generic, and not for vfio-pci. Besides, quote from
http://dpdk.org/doc/guides-16.11/rel_notes/release_2_1.html:
  "- Per queue RX interrupt events are only allowed in VFIO
     which supports multiple MSI-X vectors.
   - In UIO, the RX interrupt shares the same vector with other
     interrupts. When the RX interrupt and LSC interrupt are both
     enabled, only the former is available.
   - RX interrupt is only implemented for the linuxapp target"

As Linux starts to support vfio noiommu mode since 4.8.0, it's
a good chance to enable per queue RX interrupt for virtio PMD.
This patchset is an attempt to enable this.

Note: this patch set is still under developping, not ready for test.

Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>

Jianfeng Tan (5):
  net/virtio: add Rx descriptor check
  net/virtio: setup Rx fastpath interrupts
  net/virtio: remove Rx queue interrupts when stopping
  net/virtio: add Rx queue intr enable/disable functions
  examples/l3fwd: add parse-ptype option

 drivers/net/virtio/virtio_ethdev.c | 74 +++++++++++++++++++++++++++++++++++---
 drivers/net/virtio/virtio_ethdev.h |  3 ++
 drivers/net/virtio/virtio_rxtx.c   |  9 +++++
 drivers/net/virtio/virtqueue.c     | 11 ------
 drivers/net/virtio/virtqueue.h     | 26 +++++++++++++-
 examples/l3fwd-power/main.c        | 60 ++++++++++++++++++++++++++++++-
 6 files changed, 165 insertions(+), 18 deletions(-)

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2.7.4