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| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2016-07-25 13:39:39 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-08-02 16:00:58 -0400 |
| commit | 856cc4c237add46510c8ae91764f4eda31a9e1cf (patch) | |
| tree | 346dbab7f942e9afd36b7c1b2bb25451d3106e36 /include/rdma/rdma_vt.h | |
| parent | 23002d5b08ccbbf0902bbc3430293629a1fa12c6 (diff) | |
| download | lwn-856cc4c237add46510c8ae91764f4eda31a9e1cf.tar.gz lwn-856cc4c237add46510c8ae91764f4eda31a9e1cf.zip | |
IB/hfi1: Add the capability for reserved operations
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>
Diffstat (limited to 'include/rdma/rdma_vt.h')
| -rw-r--r-- | include/rdma/rdma_vt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h index 7fdba92d4c05..e31502107a58 100644 --- a/include/rdma/rdma_vt.h +++ b/include/rdma/rdma_vt.h @@ -158,6 +158,7 @@ struct rvt_driver_params { u32 max_mad_size; u8 qos_shift; u8 max_rdma_atomic; + u8 reserved_operations; }; /* Protection domain */ |