[ovs-dev] How do we set fields for selection_method=hash?

[Yang, Yi Y]

Thanks Simon, I know how I can use it correctly from tests/ofproto.at, but it requires OpenFlow 1.5. I tried a new field I added, it is ok. This is really a good feature:-)

-----Original Message-----
From: Simon Horman [mailto:simon.horman at netronome.com] 
Sent: Monday, March 20, 2017 9:28 PM
To: Yang, Yi Y <yi.y.yang at intel.com>
Cc: ovs-dev at openvswitch.org
Subject: Re: How do we set fields for selection_method=hash?

On Tue, Mar 14, 2017 at 06:32:30AM +0000, Yang, Yi Y wrote:
> Hi, Simon
> 
> I notice you Netronome implemented selection_method support in ovs, 
> now I just want to use the specified match fields as hash input, I 
> checked ovs-ofctl man pages, for such use case, I must use 
> "selection_method=hash fields=...", I'm not sure how I set fields I 
> want, can you help give an example? We don't use IP 5 tuple for this, 
> because they are almost same for our use case, it will be great if we 
> can use a match field we can set as hash input. Thank you in advance.

Hi,

its a while since I have used the code in question but I believe you can use something like this:

	type=select,selection_method=hash,fields(eth_dst,ip_dst,tcp_dst)

Where I believe fields can include any of the fields documented in ovs-fields(7).