***SPAM*** Re: [ofa-general] ***SPAM*** OFED-1.3 RDMA CM, IB_ACCESS_LOCAL_WRITE flag missing

Dotan Barak dotanba at gmail.com
Sun Aug 3 01:56:13 PDT 2008


On Sat, Aug 2, 2008 at 1:02 PM, Devesh Sharma <devesh28 at gmail.com> wrote:
> Thanks for replying,
> Can you explain me in a bit more detail, because if QP dose not have a
> IB_ACCESS_LOCAL_WRITE permission, according to IB spec, HCA should generate
> Local Protection Error while processing the WRs. Is it assumed that mthca
> driver (or some other provider driver) will set IB_ACCESS_LOCAL_WRITE by
> itself, even if its not requested?
The protection flag in the QP attributes is only specify which
incoming remote operations are supported (Read/Write/Atomic).

The IB_ACCESS_LOCAL_WRITE is enabled (or not) in the Memory Region.

Dotan

>
> On Fri, Aug 1, 2008 at 10:07 PM, Sean Hefty <sean.hefty at intel.com> wrote:
>>
>> > while creating QP using rdma_create_qp(), I am not seeing any where
>> > it is setting IB_ACCESS_LOCAL_WRITE flag other then for IW QPs. Is
>> > it for some specific reason its just a mistake?
>>
>> Commit 1ca8d15619f725e223c19137350b0336b9196193 (dated July 22nd) removed
>> this
>> for iWarp QPs.  The qp_access_flags is only used to set remote
>> permissions, so
>> it should not be being set.
>>
>> - Sean
>>
>
>
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