linux.git/include/rdma/rdma_vt.h, branch v5.5.12

IB/{rdmavt, hfi1, qib}: Add a counter for credit waits

2019-09-13T19:59:55+00:00

This patch adds a counter for credit waits to assist field debugging.

Link: https://lore.kernel.org/r/20190911113047.126040.10857.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn 
Signed-off-by: Kaike Wan 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Jason Gunthorpe

IB/{rdmavt, hfi1, qib}: Remove AH refcount for UD QPs

2019-06-29T01:34:26+00:00

Historically rdmavt destroy_ah() has returned an -EBUSY when the AH has a
non-zero reference count.  IBTA 11.2.2 notes no such return value or error
case:

	Output Modifiers:
	- Verb results:
	- Operation completed successfully.
	- Invalid HCA handle.
	- Invalid address handle.

ULPs never test for this error and this will leak memory.

The reference count exists to allow for driver independent progress
mechanisms to process UD SWQEs in parallel with post sends.  The SWQE will
hold a reference count until the UD SWQE completes and then drops the
reference.

Fix by removing need to reference count the AH.  Add a UD specific
allocation to each SWQE entry to cache the necessary information for
independent progress.  Copy the information during the post send
processing.

Reviewed-by: Mike Marciniszyn 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Michael J. Ruhl 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Jason Gunthorpe

RDMA: Move driver_id into struct ib_device_ops

2019-06-10T19:56:02+00:00

No reason for every driver to emit code to set this, just make it part of
the driver's existing static const ops structure.

Signed-off-by: Jason Gunthorpe 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Jason Gunthorpe

IB/rdmavt: Fix ab/ba include issues

2019-04-24T14:31:49+00:00

The currently include file ordering for rdmavt headers has an
ab/ba include issue the precludes using inlines from rdma_vt.h
in rdmavt_qp.h.

At the heart of the issue is that rdma_vt.h includes rdmavt_qp.h.

Fix the ordering issue by adjusting rdma_vt.h to not require rdmavt_qp.h
and move qp related inlines to rdmavt_qp.h.

Additionally, promote rvt_mmap_info to rdma_vt.h since it is shared
by rdmavt_cq.h and rdmavt_qp.h.

Reviewed-by: Michael J. Ruhl 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Jason Gunthorpe

IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIs

2019-02-15T22:38:38+00:00

Now when we have the udata passed to all the ib_xxx object creation APIs
and the additional macro 'rdma_udata_to_drv_context' to get the
ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally
start to remove the dependency of the drivers in the
ib_xxx->uobject->context.

Signed-off-by: Shamir Rabinovitch 
Signed-off-by: Jason Gunthorpe

IB/hfi1: Increment the retry timeout value for TID RDMA READ request

2019-02-05T22:53:55+00:00

The RC retry timeout value is based on the estimated time for the
response packet to come back. However, for TID RDMA READ request, due
to the use of header suppression, the driver is normally not notified
for each incoming response packet until the last TID RDMA READ response
packet. Consequently, the retry timeout value should be extended to
cover the transaction time for the entire length of a segment (default
256K) instead of that for a single packet. This patch addresses the
issue by introducing new retry timer functions to account for multiple
packets and wrapper functions for backward compatibility.

Reviewed-by: Mike Marciniszyn 
Signed-off-by: Kaike Wan 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Doug Ledford

IB/hfi1, IB/rdmavt: Allow for extending of QP's s_ack_queue

2019-01-31T16:36:05+00:00

The OPFN protocol uses the COMPARE_SWAP request to exchange data
between the requester and the responder and therefore needs to
be stored in the QP's s_ack_queue when the request is received
on the responder side. However, because the user does not know
anything about the OPFN protocol, this extra entry in the
queue cannot be advertised to the user. This patch adds an extra
entry in a QP's s_ack_queue.

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

RDMA: Rename port_callback to init_port

2019-01-14T20:05:14+00:00

Most provider routines are callback routines which ib core invokes.
_callback suffix doesn't convey information about when such callback is
invoked. Therefore, rename port_callback to init_port.

Additionally, store the init_port function pointer in ib_device_ops, so
that it can be accessed in subsequent patches when binding rdma device to
net namespace.

Signed-off-by: Parav Pandit 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Jason Gunthorpe

IB/hfi1: Allow the driver to initialize QP priv struct

2018-12-07T02:59:47+00:00

This patch adds an interface to allow the driver to initialize the QP priv
struct when the QP is created and after the qpn has been assigned.  A
field is added to the QP priv struct to reference the rcd and two new
files are added to contain the function to initialize the rcd field so
that more TID RDMA related code can be added here later.

Signed-off-by: Mike Marciniszyn 
Signed-off-by: Kaike Wan 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Jason Gunthorpe

IB/{hfi1, qib, rdmavt}: Move send completion logic to rdmavt

2018-10-03T22:38:28+00:00

Moving send completion code into rdmavt in order to have shared logic
between qib and hfi1 drivers.

Reviewed-by: Mike Marciniszyn 
Reviewed-by: Brian Welty 
Signed-off-by: Venkata Sandeep Dhanalakota 
Signed-off-by: Harish Chegondi 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Jason Gunthorpe