[dpdk-dev] [PATCH] hash: new function to retrieve a key given its position

Bruce Richardson bruce.richardson at intel.com
Thu Jun 16 11:50:26 CEST 2016

On Thu, Jun 16, 2016 at 10:22:30AM +0200, Yari Adan Petralanda wrote:
> The function rte_hash_get_key_with_position is added in this patch.
> As the position returned when adding a key is frequently used as an offset
> into an array of user data, this function performs the operation of
> retrieving a key given this offset.
> A possible use case would be to delete a key from the hash table when its
> entry in the array of data has certain value. For instance, the key could be
> a flow 5-tuple, and the value stored in the array a time stamp.

I have my doubts that this will work. With cuckoo hashing, a hash table entry
can change position multiple times after it is added, as the table is reorganised
to make room for new entries.


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