[ovs-dev] [PATCH v2] Extend OVS IPFIX exporter to export tunnel headers

[Ben Pfaff]

On Sun, Jun 29, 2014 at 08:41:49PM -0700, Wenyu Zhang wrote:
> Extend IPFIX exporter to export tunnel headers when both input and output
> of the port.
> Add three other_config options in IPFIX table: enable-input-sampling,
> enable-output-sampling and enable-tunnel-sampling, to control whether
> sampling tunnel info, on which direction (input or output).
> Insert sampling action before output action and the output tunnel port
> is sent to datapath in the sampling action.
> Make datapath collect output tunnel info and send it back to userpace
> in upcall message with a new additional optional attribute.
> Add a tunnel ports map to make the tunnel port lookup faster in sampling
> upcalls in IPFIX exporter. Make the IPFIX exporter generate IPFIX template
> sets with enterprise elements for the tunnel info, save the tunnel info
> in IPFIX cache entries, and send IPFIX DATA with tunnel info.
> Add flowDirection element in IPFIX templates.
> 
> Signed-off-by: Wenyu Zhang <wenyuz at vmware.com>
> Acked-by: Romain Lenglet <rlenglet at vmware.com>

I see that this has datapath portions, so I'll leave it to Pravin or
Jesse to take a first pass.