DPDK seqlock

[Ananyev, Konstantin]

Hi Mattias,

> 
> Would it make sense to have a seqlock implementation in DPDK?
> 
> I think so, since it's a very useful synchronization primitive in data
> plane applications.
> 

Agree, it might be useful.
As I remember rte_hash '_lf' functions do use something similar to seqlock,
but in hand-made manner.
Probably some other entities within DPDK itself or related projects 
will benefit from it too...
   
Konstantin