RE: [PATCH v6 net-next 1/5] net: add napi_id and hash

[Eric Dumazet]

On Wed, 2013-05-29 at 14:09 +0100, David Laight wrote:
> > > Adds a napi_id and a hashing mechanism to lookup a napi by id.
> 
> Is this one of the places where the 'id' can be selected
> so that the 'hash' lookup never collides?

Very few devices will ever call napi_hash_add()

[ Real NIC RX queues, not virtual devices ]

We use a hash table with 256 slots, the chance of collision is about 0%

Lets not over engineer the thing before its even used.


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