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* IB/rdmavt: Handle dereg of inuse MRs properlyMike Marciniszyn2017-08-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | A destroy of an MR prior to destroying the QP can cause the following diagnostic if the QP is referencing the MR being de-registered: hfi1 0000:05:00.0: hfi1_0: rvt_dereg_mr timeout mr ffff8808562108 00 pd ffff880859b20b00 The solution is to when the a non-zero refcount is encountered when the MR is destroyed the QPs needs to be iterated looking for QPs in the same PD as the MR. If rvt_qp_mr_clean() detects any such QP references the rkey/lkey, the QP needs to be put into an error state via a call to rvt_qp_error() which will trigger the clean up of any stuck references. This solution is as specified in IBTA 1.3 Volume 1 11.2.10.5. [This is reproduced with the 0.4.9 version of qperf and the rc_bw test] Reviewed-by: Dennis Dalessandro <dennis.dalessandro@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>
* IB/hfi1, rdmavt: Move SGE state helper routines into rdmavtBrian Welty2017-02-191-0/+50
| | | | | | | | | | To improve code reuse, add small SGE state helper routines to rdmavt_mr.h. Leverage these in hfi1, including refactoring of hfi1_copy_sge. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Brian Welty <brian.welty@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/rdmavt: Use per-CPU reference count for MRsSebastian Sanchez2017-02-191-5/+5
| | | | | | | | | | | | | | | | | | Having per-CPU reference count for each MR prevents cache-line bouncing across the system. Thus, it prevents bottlenecks. Use per-CPU reference counts per MR. The per-CPU reference count for FMRs is used in atomic mode to allow accurate testing of the busy state. Other MR types run in per-CPU mode MR until they're freed. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Sebastian Sanchez <sebastian.sanchez@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>
* IB/hfi1: Optimize lkey validation structuresMike Marciniszyn2016-11-151-3/+7
| | | | | | | | | | | | | | | | | Profiling shows that the key validation is susceptible to cache line trading when accessing the lkey table. Fix by separating out the read mostly fields from the write fields. In addition the shift amount, which is function of the lkey table size, is precomputed and stored with the table pointer. Since both the shift and table pointer are in the same read mostly cacheline, this saves a cache line in this hot path. Reviewed-by: Sebastian Sanchez <sebastian.sanchez@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>
* IB/rdmavt: Add mechanism to invalidate MR keysJianxin Xiong2016-08-021-0/+1
| | | | | | | | | | | | | | In order to support extended memory management, add the mechanism to invalidate MR keys. This includes a flag "lkey_invalid" in the MR data structure that is to be checked when validating access to the MR via the associated key, and two utility functions to perform fast memory registration and memory key invalidate operations. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/rdmavt: Fix copyright dateDennis Dalessandro2016-03-101-1/+1
| | | | | | | | | | Update all files added by rdmavt which do not yet have 2016 as the copyright year. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/rdmavt: Add modify qpDennis Dalessandro2016-03-101-0/+9
| | | | | | | | | Add modify qp and supporting functions. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/rdmavt: Break rdma_vt main include header file upDennis Dalessandro2016-03-101-0/+130
Until all functionality is moved over to rdmavt drivers still need to access a number of fields in data structures that are predominantly meant to be used by rdmavt. Once these rdmavt_<ibta_object>.h header files are no longer being touched by drivers their content should be moved to rdmavt/<ibta_object>.h. While here move a couple #defines over to more general IB verbs header files because they fit better. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-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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