IB/hfi1: Add the capability for reserved operations

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This fix allows for support of in-kernel reserved operations
without impacting the ULP user.

The low level driver can register a non-zero value which
will be transparently added to the send queue size and hidden
from the ULP in every respect.

ULP post sends will never see a full queue due to a reserved
post send and reserved operations will never exceed that
registered value.

The s_avail will continue to track the ULP swqe availability
and the difference between the reserved value and the reserved
in use will track reserved availabity.

Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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This commit is contained in:

Mike Marciniszyn 2016-07-25 13:39:39 -07:00 • committed by Doug Ledford

parent 23002d5b08

commit 856cc4c237

3 changed files with 113 additions and 23 deletions

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1

include/rdma/rdma_vt.h

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50

include/rdma/rdmavt_qp.h

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