[dpdk-dev] [PATCH v2 00/10] net/virtio: fix queue reconfigure issue

Yao, Lei A lei.a.yao at intel.com
Mon Nov 7 16:05:40 CET 2016

Tested-by: Lei Yao <lei.a.yao at intel.com>
- Apply patch to v16.11-rc2
- Compile: Pass
- OS: Ubuntu16.04 4.4.0-45-generic
- GCC: 5.4.0

Most of the basic Virtio related test cases are tested with this patch. No function issue found and no obvious performance drop. The following is the pass case list:
TC1:  vhost/virtio PVP vector performance      
TC2:  vhost/virtio PVP normal path performance 
TC3:  vhost/virtio PVP mergeable path performance 
TC7: vhost/virtio-net PVP ipv4 fwd normal path performance
TC8: vhost/virtio-net PVP ipv4 fwd mergeable path performance
TC9: vhost/virtio-net VM2VM iperf with TSO enabled performance
TC11: vhost/virtio-pmd PVP with 2q 2c vector performance
TC12: vhost/virtio-pmd PVP with 2q 1c vector performance
TC16: vhost/virtio1.0 PVP normal performance
TC17: vhost/virtio 1.0 PVP mergeable performance
TC18: vhost/virtio 1.0 PVP vector performance(should be same as normal)
TC19: dpdk vhost + virtio-pmd PVP vector performance
TC20: dpdk vhost + virtio-pmd PVP non-vector performance
TC21: dpdk vhost + virtio-pmd PVP mergeable performance
TC25: Test Vhost/virtio-pmd PVP vector performance with qemu2.5
TC26: Test Vhost/virtio-pmd PVP vector performance with qemu2.6
TC27: Test Vhost/virtio-pmd PVP vector performance with qemu2.7
test vhost-user reconnect with virtio-pmd
test virtio-pmd reconnect with vhost-user 
test vhost-user reconnect with multi virtio-pmd
multi test virtio-pmd reconnect with vhost-user

-----Original Message-----
From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Yuanhan Liu
Sent: Saturday, November 5, 2016 5:41 PM
To: dev at dpdk.org
Cc: Thomas Monjalon <thomas.monjalon at 6wind.com>; Tan, Jianfeng <jianfeng.tan at intel.com>; Kevin Traynor <ktraynor at redhat.com>; Ilya Maximets <i.maximets at samsung.com>; Kyle Larose <klarose at sandvine.com>; Maxime Coquelin <maxime.coquelin at redhat.com>; Yuanhan Liu <yuanhan.liu at linux.intel.com>
Subject: [dpdk-dev] [PATCH v2 00/10] net/virtio: fix queue reconfigure issue

This patchset fixes few issues related to virtio queue reconfigure:
increase or shrink the queue number. The major issue and the reason behind is described with length details in patch 4 "net/virtio: allocate queue at init stage".

Those bugs can not be fixed by few lines of code, it's because the current driver init logic is quite wrong, that I need change quite many places to make it right. Meanwhile, I have already done my best to keep the changes being as minimal as possible, so that we could have fewer changes to break something else; also, it's would be easier for review.

v2: - fix two more minor issues regarding to queue enabling; see patch 9
      and 10.
    - refined commit log a bit.



Yuanhan Liu (10):
  net/virtio: revert fix restart
  net/virtio: simplify queue memzone name
  net/virtio: simplify queue allocation
  net/virtio: allocate queue at init stage
  net/virtio: initiate vring at init stage
  net/virtio: move queue configure code to proper place
  net/virtio: complete init stage at the right place
  net/virtio: remove started field
  net/virtio: fix less queues being enabled issue
  net/virtio: fix multiple queue enabling

 drivers/net/virtio/virtio_ethdev.c | 248 +++++++++++++++++--------------  drivers/net/virtio/virtio_ethdev.h |  16 --
 drivers/net/virtio/virtio_pci.h    |   3 +-
 drivers/net/virtio/virtio_rxtx.c   | 291 ++++++++++++-------------------------
 drivers/net/virtio/virtqueue.h     |   7 +
 5 files changed, 237 insertions(+), 328 deletions(-)


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