[ovs-dev] [xc 4/4] ofproto-dpif: Track relevant fields for wildcarding and add xout cache.

Justin Pettit jpettit at nicira.com
Mon Jun 10 21:07:50 UTC 2013

On Jun 6, 2013, at 11:21 PM, "Rajahalme, Jarno (NSN - FI/Espoo)" <jarno.rajahalme at nsn.com> wrote:

> On Jun 7, 2013, at 1:34 , ext Justin Pettit wrote:
>> On Jun 5, 2013, at 10:43 PM, Ben Pfaff <blp at nicira.com> wrote:
>>> I think that struct xout_cache could use a top-level comment
>>> explaining its purpose and how it generally fits in with the rest of
>>> the system.
>> /* A cache of xlate_out (xout) translations.  Facets that depend on the
>> * same flow fields have the same xout entries, so the cache saves on
>> * needless action translations and redundant copies of xout structures. */
> I was perplexed for a while by the "struct xout_cache" and the 'xout_cache'
> member of struct ofproto_dpif. The first one is a cache entry, while the latter
> is the cache. While the comments on the members mention "entry", maybe the
> comment above should as well.
> Also, as it is possible for two facets that depend only on e.g. the 'in_port'
> field to have completely different actions, you could be more specific with
> the comment above.

I clarified the comment, which should hopefully address both of these concerns.



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