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From: "Singh, Jasvinder" <jasvinder.singh@intel.com>
To: "Richardson, Bruce" <bruce.richardson@intel.com>, "Yeddula, Avinash"
 <ayeddula@ciena.com>
Thread-Topic: [dpdk-dev] [ 2nd try ] Lookup mechanim in DPDK HASH table.
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Date: Mon, 17 Aug 2015 14:00:05 +0000
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Subject: Re: [dpdk-dev] [ 2nd try ] Lookup mechanim in DPDK HASH table.
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> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Bruce Richardson
> Sent: Friday, August 14, 2015 10:25 AM
> To: Yeddula, Avinash
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [ 2nd try ] Lookup mechanim in DPDK HASH table.
>=20
> On Thu, Aug 13, 2015 at 05:37:21PM -0400, Yeddula, Avinash wrote:
> > Any comments on this question ?
> >
> > Thanks
> > -Avinash
> >
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Yeddula, Avinash
> > Sent: Wednesday, August 12, 2015 3:04 PM
> > To: dev@dpdk.org
> > Subject: [dpdk-dev] Lookup mechanim in DPDK HASH table.
> >
> > Hello All,
> >
> > I'm using DPDK extendable hash tables. This question is with respect to=
 the
> lookup aspect of the hash table.
> > I see that there is just one "t->key_offset" that is pre-defined for th=
e hash
> table. I also understand that the frame needs to carry the "lookup_key /
> keys" in the meta data.
> >
> > Here is my question:  How to support more than one lookup with differen=
t
> keys on the same frame on the same table.
> > Use case: Src mac  lookup and dst mac lookup on the same mac table.
> >
> > Thanks
> > -Avinash
>=20
> Just to confirm: this is using the extensible bucket hash in the rte_tabl=
e
> library of packet framework, rather than the standalone rte_hash library,
> right?
>=20
> /Bruce

Could you share detail on the two different keys used for lookups. In case =
if you are considering bidirectional packet flow between the source and des=
tination, symmetric hash can be used-  http://www.ndsl.kaist.edu/~kyoungsoo=
/papers/TR-symRSS.pdf=20

Jasvinder