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Date: Tue, 26 Sep 2017 10:37:53 +0100 From: John Hurley <john.hurley@...ronome.com> To: Or Gerlitz <gerlitz.or@...il.com> Cc: Simon Horman <simon.horman@...ronome.com>, David Miller <davem@...emloft.net>, Jakub Kicinski <jakub.kicinski@...ronome.com>, Linux Netdev List <netdev@...r.kernel.org>, oss-drivers@...ronome.com Subject: Re: [PATCH net-next 7/7] nfp: flower vxlan neighbour keep-alive [ Reposting in plantext only] On Mon, Sep 25, 2017 at 7:32 PM, Or Gerlitz <gerlitz.or@...il.com> wrote: > > On Mon, Sep 25, 2017 at 1:23 PM, Simon Horman > <simon.horman@...ronome.com> wrote: > > From: John Hurley <john.hurley@...ronome.com> > > > > Periodically receive messages containing the destination IPs of tunnels > > that have recently forwarded traffic. Update the neighbour entries 'used' > > value for these IPs next hop. > > Are you proactively sending keep alive messages from the driver or the > fw? what's wrong with the probes sent by the kernel NUD subsystem? > Hi Or, The messages are sent from the FW to the driver. They indicate which offloaded tunnels are currently active. > > In our driver we also update the used value for neighs of offloaded > tunnels, we do it based on flow counters for the offloaded tunnels > which is an evidence for activity. Any reason for you not to apply a > similar practice? Yes, this would provide the same outcome. Because our firmware already offered these messages, we chose to support this approach. > > > Or.
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