[openib-general] Re: netdev reference counting problem with ib_at

[Sean Hefty]

I have been following this and the other thread on CMA. There appears to be some
opinions to removing the ib_at module and introduce CMA.
Is that correct? 



The proposal is to remove ATS, which is only a portion of ib_at, and instead use
ARP to resolve addresses.


True, CMA will need some form of address translation. Can we not use some
incarnation of ib_at for that? I realize that ib_at has a net_device
refcnt problem. Is this refcnt problem a usage issue rather than just a bug in
the implementation? How would CMA solve the refcnt issue?
What am I missing?

Some incarnation of ib_at will be needed, and portions of either the ib_at or
SDP code will likely be used.

- Sean

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