[ovs-dev] Agenda for IRC neeting for 8/13 (Nithin Raju)

[Samuel Ghinet]

Thanks Ben!
________________________________________
From: Ben Pfaff [blp at nicira.com]
Sent: Friday, August 22, 2014 7:59 PM
To: Samuel Ghinet
Cc: dev at openvswitch.org
Subject: Re: [ovs-dev] Agenda for IRC neeting for 8/13 (Nithin Raju)

On Fri, Aug 22, 2014 at 04:27:01PM +0000, Samuel Ghinet wrote:
> [QUOTE]
> OVS 1.9.3 needed a trip to userspace for every new microflow.  But OVS
> 1.11 introduced megaflows, so that in many cases that is no longer
> necessary.
> [/QUOTE]
> Yeah, the microflow is the kernel flow I was trying to say.  We can
> get to have quite many microflows created, for all kinds of cases of
> unicast dest eth addr, or multicast dest eth addr.  I am not sure
> how masks are being set on microflows when meeting a packet - is
> there everything masked, except eth addr and eth type? or, eth addr,
> eth type, and ip keys?

Open vSwitch no longer uses microflows in any common case, including
"flood" or "normal".  Normally for simple MAC learning cases the
megaflows that it installs only match L2 fields.

> [QUOTE]
> I'm really quite puzzled why you think "flood" is tricky or special.
> [/QUOTE]
> I believe the "flood" can be as much as special or tricky as the
> "normal", and that's because of microflows.

Open vSwitch no longer uses microflows in any common case, including
"flood" or "normal".