[ovs-dev] What's the purpose of ovs_dp_cmd_set?

Jesse Gross jesse at nicira.com
Tue May 8 19:57:05 UTC 2012


On Tue, May 8, 2012 at 10:45 AM, Jon Leighton <leighton at cis.udel.edu> wrote:
> I'm trying to understand the datapath code for ovs 1.4, and one particular
> question I have is about the difference between ovs_dp_cmd_get() and
> ovs_dp_cmd_set(). ovs_dp_cmd_get() appears to return the datapath's name and
> stats to a requester, while ovs_dp_cmd_set() appears to send that same info
> to a multicast group. What's the purpose of ovs_dp_cms_set(), and what gets
> set? Thanks for any help.

There are no attributes that can currently be set on datapaths.  In
the past there were and there may be in the future.  The multicasting
that's done is not a way to request information but to inform
listeners that something is changed, which is obviously more useful in
other contexts.



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