linux-toradex.git/include/rdma/rdma_vt.h, branch v4.10

IB/rdmvat: Organize hot path calldowns into a single cacheline

2016-11-15T21:25:59+00:00

Save a cacheline by having hot path calldowns together.

Reviewed-by: Sebastian Sanchez 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/hfi1: Add the capability for reserved operations

2016-08-02T20:00:58+00:00

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 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/rdmavt: Add mechanism to invalidate MR keys

2016-08-02T20:00:58+00:00

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 
Reviewed-by: Dennis Dalessandro 
Signed-off-by: Jianxin Xiong 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/rdmavt: Add data structures and routines for table driven post send

2016-08-02T19:47:44+00:00

Add flexibility for driver dependent operations in post send
because different drivers will have differing post send
operation support.

This includes data structure definitions to support a table
driven scheme along with the necessary validation routine
using the new table.

Reviewed-by: Ashutosh Dixit 
Reviewed-by: Jianxin Xiong 
Reviewed-by: Dennis Dalessandro 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/rdmavt: Correct qp_priv_alloc() return value test

2016-06-23T14:16:15+00:00

The current drivers return errors from this calldown
wrapped in an ERR_PTR().

The rdmavt code incorrectly tests for NULL.

The code is fixed to use IS_ERR() and change ret according
to the driver return value.

Cc: Stable  # 4.6+
Reviewed-by: Dennis Dalessandro 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/rdamvt: Fix rdmavt s_ack_queue sizing

2016-05-26T16:21:10+00:00

rdmavt allows the driver to specify the size of the ack queue, but
only uses it for the modify QP limit testing for setting the atomic
limit value.

The driver dependent size is now used to size the s_ack_queue ring
dynamicially.

Since the driver knows its size, the driver will use its define
for any ring size dependent code.

Reviewed-by: Mitko Haralanov 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Doug Ledford

IB/rdmavt: Max atomic value should be a u8

2016-05-26T16:21:10+00:00

This matches the ib_qp_attr size and
avoids a extremely large value when the lower level
driver registers.

As part of the patch, the u8 ordinals are moved to the
end of the struct to reduce pahole noted excesses.

Reviewed-by: Mitko Haralanov 
Reviewed-by: Dennis Dalessandro 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Doug Ledford

IB/rdmavt,hfi1,qib: Fix memory leak

2016-04-28T20:32:27+00:00

rdi->ports has memory allocated in rvt_alloc_device(), but does not get
freed because the hfi1 and qib drivers drivers call ib_dealloc_device()
directly instead of going through rdmavt. Add a rvt_dealloc_device()
that frees rdi->ports and then calls ib_dealloc_device(). Switch hfi1
and qib drivers to calling rvt_dealloc_device() instead of
ib_dealloc_device() directly.

Reviewed-by: Dennis Dalessandro 
Reviewed-by: Brian Welty 
Signed-off-by: Jubin John 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

IB/rdmavt: Remove unnecessary exported functions

2016-03-11T01:38:10+00:00

Remove exported functions which are no longer required as the
functionality has moved into rdmavt. This also requires re-ordering some
of the functions since their prototype no longer appears in a header
file. Rather than add forward declarations it is just cleaner to
re-order some of the functions.

Reviewed-by: Jubin John 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/rdmavt: Remove signal_supported and comments

2016-03-11T01:38:10+00:00

Initially it was intended that rdmavt would support some signaling
between the underlying driver and itself. However this turned out to be
unnecessary for qib and hfi1. If we need to add something like this in
later to support another driver we should do it then. As of now this
essentially dead code so remove it.

Reviewed-by: Ira Weiny 
Reviewed-by: Jubin John 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford