On 09.01.2020 08:36, [email protected] wrote:
> From: Tonghao Zhang <[email protected]>
> 
> For installing more than MAX_FLOWS (65536) flows to netdev datapath.
> Add the ovs-appctl subcommand "dpif-netdev/pmd-set-max-flow" which
> can change the flow number which netdev datapath support.
> 
> Signed-off-by: Tonghao Zhang <[email protected]>

Hi.

I'm wondering why we need the flow limit on the datapath level at all?

MAX_FLOWS constant was there from the introduction of dpif-netdev,
however, later new flow-limit mechanism was implemented that
controls number of datapath flows in a dynamic way on ofproto level.

So, maybe we can just remove the limit and fully rely on ofproto
to decide what flow limit we need?  There are no limitations for
flow table size in dpif-netdev beside the artificial one.
'other_config:flow-limit' seems suitable to control this.

Ben, what do you think?

Best regards, Ilya Maximets.
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