[ovs-dev] Integrate ovs+dpdk to openstack

[Na Zhu]

Hi Przemek,


Really appreciate your reply, you are so kind.

I look through the code changes, I have one basic question.
In the *INSTALL.DPDK.md <http://INSTALL.DPDK.md>,* it shows all the steps
about using dpdk vhost-user, it can be divided into 2 parts:
1, create vhost-user port to OVS (your code change covers this part)
2, attach vhost-user port to VM, including configure socket and configure
hugepage, I am sure there is no code about configure hugepage in your
changes. Can you tell me why?



The following contents are copy from *INSTALL.DPDK.md
<http://NSTALL.DPDK.md>.*



*DPDK vhost-user VM configuration:Follow the steps below to attach
vhost-user port(s) to a VM. 1. Configure sockets. Pass the following
parameters to QEMU to attach a vhost-user device:-chardev
socket,id=char1,path=/usr/local/var/run/openvswitch/vhost-user-1 -netdev
type=vhost-user,id=mynet1,chardev=char1,vhostforce -device
virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1 ...where vhost-user-1 is
the name of the vhost-user port added to the switch. Repeat the above
parameters for multiple devices, changing the chardev path and id as
necessary. Note that a separate and different chardev path needs to be
specified for each vhost-user device. For example you have a second
vhost-user port named 'vhost-user-2', you append your QEMU command line
with an additional set of parameters:-chardev
socket,id=char2,path=/usr/local/var/run/openvswitch/vhost-user-2 -netdev
type=vhost-user,id=mynet2,chardev=char2,vhostforce -device
virtio-net-pci,mac=00:00:00:00:00:02,netdev=mynet2 2. Configure huge pages.
QEMU must allocate the VM's memory on hugetlbfs. vhost-user ports access a
virtio-net device's virtual rings and packet buffers mapping the VM's
physical memory on hugetlbfs. To enable vhost-user ports to map the VM's
memory into their process address space, pass the following paramters to
QEMU:-object memory-backend-file,id=mem,size=4096M,mem-path=/dev/hugepages,
share=on -numa node,memdev=mem -mem-prealloc*





2015-09-24 19:13 GMT+08:00 Czesnowicz, Przemyslaw <
przemyslaw.czesnowicz at intel.com>:

> I meant the “main” Nova tree.
>
> Vhost-user support was added with those two changes:
>
>
>
> https://review.openstack.org/149309
>
> https://review.openstack.org/149310
>
>
>
> Przemek
>
>
>
>
>
> *From:* Na Zhu [mailto:zhunatuzi at gmail.com]
> *Sent:* Wednesday, September 23, 2015 2:23 PM
>
> *To:* Czesnowicz, Przemyslaw
> *Cc:* dev at openvswitch.org
> *Subject:* Re: [ovs-dev] Integrate ovs+dpdk to openstack
>
>
>
> Hi Przmek,
>
>
>
> Can you send me the nova source tree?
>
>
>
> BR
>
> Juno
>
>
>
> 2015-09-23 16:46 GMT+08:00 Czesnowicz, Przemyslaw <
> przemyslaw.czesnowicz at intel.com>:
>
> Hi Na Zhu,
>
>
>
> 1.       This is used when the agent is started.
>
> 2.       Not sure what you mean, look at
> https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/ovs_ofctl/main.py
>
> 3.       All the necessary Nova changes are in Nova source tree.
>
>
>
> If you think anything is wrong with the code please propose a patch or
> create a bug in Launchpad.
>
> https://bugs.launchpad.net/networking-ovs-dpdk/
>
>
>
>
>
> Regards
>
> Przemek
>
>
>
> *From:* Na Zhu [mailto:zhunatuzi at gmail.com]
> *Sent:* Wednesday, September 23, 2015 7:00 AM
> *To:* Czesnowicz, Przemyslaw
> *Cc:* dev at openvswitch.org
> *Subject:* Re: [ovs-dev] Integrate ovs+dpdk to openstack
>
>
>
> Hi Przemek,
>
>
>
> Thanks your reply.
>
>
>
> I read the code and find some missing, for example:
>
> 1, in file common/config.py, a new parameter of_interface is added
>  "cfg.StrOpt('of_interface', default='ovsdpdk-ofctl'", but it is not used
> in other place.
>
> 2, in file  agent/openflow/ovsdpdk_ofctl/main.py, it imports br-int,
> br-tun and br-phy, i do not find it in my neutron code.
>
> 3, there is no change about nova.
>
>
>
> BR
>
> Juno
>
>
>
> 2015-09-16 17:37 GMT+08:00 Czesnowicz, Przemyslaw <
> przemyslaw.czesnowicz at intel.com>:
>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces at openvswitch.org] On Behalf Of Na Zhu
> > Sent: Wednesday, September 16, 2015 10:12 AM
> > To: dev at openvswitch.org
> > Subject: [ovs-dev] Integrate ovs+dpdk to openstack
> >
> > Hi all,
> >
> > Since ovs+dpdk is released, are you plan to integrate ovs+dpdk to
> > openstack?
> > I find there is a project on openstack stackforge
> > https://github.com/stackforge/networking-ovs-dpdk/, but the project is
> not
> > finished, and the code is incomplete.
> >
> > Is there any available patch for ovs+dpdk in openstack?
> >
>
> Hi Na Zhu,
>
> What do you mean by not complete?
> In my opinion  networking-ovs-dpdk project is "complete" and working.
> There is a Neutron CI system that validates integration on every neutron
> patchset.
> In the docs folder of networking-ovs-dpdk  you will find a GSG[1] that may
> help you to set it up. Please let me know if you have issues.
>
> Regards
> Przemek
>
> [1] -
> https://github.com/stackforge/networking-ovs-dpdk/blob/master/doc/source/getstarted.rst
>
> >
> > BR
> > Juno
> > _______________________________________________
> > dev mailing list
> > dev at openvswitch.org
> > http://openvswitch.org/mailman/listinfo/dev
>
>
>
>
>