[ovs-discuss] disable datapath

[Amrane Ait Zeouay]

Thank you for your answer, but i want to know if i can disable sending the
flow from userspace to datapath so that the datapath send all packets to
the userspace, even it will be slow, because i implemented a new field in
userspace and it's not implemented in datapath.

Thank you.

2016-08-08 11:48 GMT+02:00 Fischetti, Antonio <antonio.fischetti at intel.com>:

> Hi Amrane, that’s the expected behavior.
>
> The 1st packet of a flow goes up to userspace – and there’s a context
> switch for that. After classification 1 cache entry will be added in the
> megaflow table and another cache entry into the microflow table, both
> these 2 caches are into the kernel. So hopefully future packets - similar
> to the one you received – will be matched against the kernel caches,
> avoiding to be processed in userspace.
>
>
>
> Worth having a look at
>
> https://www.usenix.org/system/files/conference/nsdi15/
> nsdi15-paper-pfaff.pdf
>
>
>
> The other option you could consider is to use OVS with DPDK where all the
> datapath is at the userspace level.
>
>
>
> HTH
>
> Antonio
>
>
>
> *From:* discuss [mailto:discuss-bounces at openvswitch.org] *On Behalf Of *
> Amrane Ait Zeouay
> *Sent:* Monday, August 8, 2016 9:44 AM
> *To:* discuss at openvswitch.org
> *Subject:* [ovs-discuss] disable datapath
>
>
>
> Hi,
>
>
>
> Is there a way to send packets to userspace and stopping userspace from
> sending flows to datapath, because i want all my packets to be treated in
> userspace, because when i send the first packet it goes to userspace and
> after that it doesn't. so can you help me.
>
>
>
> Thank you and have a nice say,
>
>
>
> best regards
>
>
>
>
>
>
>
>
>



-- 

Amrane Ait Zeouay

Engineer Student in The Development of Software and Systems

University of Western Brittany

Tel:  +33 7 62 25 56 03 <+33+7+62+25+56+03>
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