WIP: Flowstats #744
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WIP: Flowstats #744
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This should make it more clear at each stage which types are being used where. This also reduced struct sizes for each, and in a given `parent`s list we take no more space than an Arc<dyn> would. It may be worth applying the same to `children`.
Now we have the primitives for flow and rule stats. Let's go!
But no action state to exercise it, yet.
Should be better for being able to check predicate matches etc. in downstream VPC impls.
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Implements part of RFD 549.
This PR starts by assigning a full set of packet counters to every rule, LFT, and active flow within OPTE. From here, we track parent relationships to assign credit back to counters and to memorise every ID for every rule hit by a packet in each direction.