[ovs-discuss] Implementing 'group type select' algo in the switch

[Haleema Sadia]

My topology is two hosts connected to a switch and I am sending two flows
from host 1 to host 2. What I want to do is use the select group type with
two different buckets. But both of my flows are being mapped to one bucket,
essentially. Shouldn't the select function, which is taking a hash of
src/dst ports and ips, map each blow to different bucket?



On Fri, Jun 12, 2015 at 3:20 AM, Ben Pfaff <blp at nicira.com> wrote:

> The default is a hash (not just an xor) over fields up to L4, but you
> can configure another method using the extensions implemented by
> Netronome.
>
> On Thu, Jun 11, 2015 at 11:07:56PM +0500, Haleema Sadia wrote:
> > What is the current ovs version using for select type? As far as I could
> > understand it is taking a xor of src and destination addresses and tcp
> > ports? Is it correct?
> >
> > On Thursday, June 11, 2015, Ben Pfaff <blp at nicira.com> wrote:
> >
> > > On Thu, Jun 11, 2015 at 01:13:22PM +0500, Haleema Sadia wrote:
> > > > I was wondering if you could help me figuring out where the
> algorithm for
> > > > the group type "select" is implemented in ovs switch files? I want to
> > > > implement a function which takes the hash of the src/dst ip, and
> src/dst
> > > > port and selects the corresponding bucket for the packet.
> > >
> > > xlate_select_group() in ofproto-dpif-xlate.c
> > >
>
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