On 2018年03月10日 00:07, Jesper Dangaard Brouer wrote:

On Fri, 9 Mar 2018 21:07:36 +0800
Jason Wang [off-list ref] wrote:

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Use the IDA infrastructure for getting a cyclic increasing ID number,
that is used for keeping track of each registered allocator per
RX-queue xdp_rxq_info.

Signed-off-by: Jesper Dangaard Brouer<redacted>

A stupid question is, can we manage to unify this ID with NAPI id?

Sorry I don't understand the question?

I mean can we associate page poll pointer to napi_struct, record NAPI id
in xdp_mem_info and do lookup through NAPI id?

No. The driver can unreg/reg a new XDP memory model,

Is there an actual use case for this?

  without reloading
the NAPI and generate a new NAPI id.

We could still do this by e.g a allocator pointer protected by RCU I think?

Thanks