linux-toradex.git/include/rdma, branch v4.14-rc5

IB: Correct MR length field to be 64-bit

2017-09-25T15:47:23+00:00

The ib_mr->length represents the length of the MR in bytes as per
the IBTA spec 1.3 section 11.2.10.3 (REGISTER PHYSICAL MEMORY REGION).

Currently ib_mr->length field is defined as only 32-bits field.
This might result into truncation and failed WRs of consumers who
registers more than 4GB bytes memory regions and whose WRs accessing
such MRs.

This patch makes the length 64-bit to avoid such truncation.

Cc: Sagi Grimberg 
Cc: Chuck Lever 
Cc: Faisal Latif 
Fixes: 4c67e2bfc8b7 ("IB/core: Introduce new fast registration API")
Signed-off-by: Ilya Lesokhin 
Signed-off-by: Parav Pandit 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

IB/core: Fix typo in the name of the tag-matching cap struct

2017-09-25T15:47:23+00:00

The tag matching functionality is implemented by mlx5 driver
by extending XRQ, however this internal kernel information was
exposed to user space applications with *xrq* name instead of *tm*.

This patch renames *xrq* to *tm* to handle that.

Fixes: 8d50505ada72 ("IB/uverbs: Expose XRQ capabilities")
Signed-off-by: Leon Romanovsky 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford

Merge tag 'nfsd-4.14' of git://linux-nfs.org/~bfields/linux

2017-09-09T20:31:49+00:00

Pull nfsd updates from Bruce Fields:
 "More RDMA work and some op-structure constification from Chuck Lever,
  and a small cleanup to our xdr encoding"

* tag 'nfsd-4.14' of git://linux-nfs.org/~bfields/linux:
  svcrdma: Estimate Send Queue depth properly
  rdma core: Add rdma_rw_mr_payload()
  svcrdma: Limit RQ depth
  svcrdma: Populate tail iovec when receiving
  nfsd: Incoming xdr_bufs may have content in tail buffer
  svcrdma: Clean up svc_rdma_build_read_chunk()
  sunrpc: Const-ify struct sv_serv_ops
  nfsd: Const-ify NFSv4 encoding and decoding ops arrays
  sunrpc: Const-ify instances of struct svc_xprt_ops
  nfsd4: individual encoders no longer see error cases
  nfsd4: skip encoder in trivial error cases
  nfsd4: define ->op_release for compound ops
  nfsd4: opdesc will be useful outside nfs4proc.c
  nfsd4: move some nfsd4 op definitions to xdr4.h

lib/interval_tree: fast overlap detection

2017-09-09T01:26:49+00:00

Allow interval trees to quickly check for overlaps to avoid unnecesary
tree lookups in interval_tree_iter_first().

As of this patch, all interval tree flavors will require using a
'rb_root_cached' such that we can have the leftmost node easily
available.  While most users will make use of this feature, those with
special functions (in addition to the generic insert, delete, search
calls) will avoid using the cached option as they can do funky things
with insertions -- for example, vma_interval_tree_insert_after().

[jglisse@redhat.com: fix deadlock from typo vm_lock_anon_vma()]
  Link: http://lkml.kernel.org/r/20170808225719.20723-1-jglisse@redhat.com
Link: http://lkml.kernel.org/r/20170719014603.19029-12-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso 
Signed-off-by: Jérôme Glisse 
Acked-by: Christian König 
Acked-by: Peter Zijlstra (Intel) 
Acked-by: Doug Ledford 
Acked-by: Michael S. Tsirkin 
Cc: David Airlie 
Cc: Jason Wang 
Cc: Christian Benvenuti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rdma core: Add rdma_rw_mr_payload()

2017-09-05T19:15:30+00:00

The amount of payload per MR depends on device capabilities and
the memory registration mode in use. The new rdma_rw API hides both,
making it difficult for ULPs to determine how large their transport
send queues need to be.

Expose the MR payload information via a new API.

Signed-off-by: Chuck Lever 
Acked-by: Doug Ledford 
Signed-off-by: J. Bruce Fields

IB/core: Assign root to all drivers

2017-08-31T12:35:14+00:00

In order to use the parsing tree, we need to assign the root
to all drivers. Currently, we just assign the default parsing
tree via ib_uverbs_add_one. The driver could override this by
assigning a parsing tree prior to registering the device.

Signed-off-by: Matan Barak 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford

IB/core: Add legacy driver's user-data

2017-08-31T12:35:13+00:00

In this phase, we don't want to change all the drivers to use
flexible driver's specific attributes. Therefore, we add two default
attributes: UHW_IN and UHW_OUT. These attributes are optional in some
methods and they encode the driver specific command data. We add
a function that extract this data and creates the legacy udata over
it.

Driver's data should start from UVERBS_UDATA_DRIVER_DATA_FLAG. This
turns on the first bit of the namespace, indicating this attribute
belongs to the driver's namespace.

Signed-off-by: Matan Barak 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford

IB/core: Export ioctl enum types to user-space

2017-08-31T12:35:12+00:00

Add a new ib_user_ioctl_verbs.h which exports all required ABI
enums and structs to the user-space.
Export the default types to user-space through this file.

Signed-off-by: Matan Barak 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford

IB/core: Explicitly destroy an object while keeping uobject

2017-08-31T12:35:11+00:00

When some objects are destroyed, we need to extract their status at
destruction. After object's destruction, this status
(e.g. events_reported) relies in the uobject. In order to have the
latest and correct status, the underlying object should be destroyed,
but we should keep the uobject alive and read this information off the
uobject. We introduce a rdma_explicit_destroy function. This function
destroys the class type object (for example, the IDR class type which
destroys the underlying object as well) and then convert the uobject
to be of a null class type. This uobject will then be destroyed as any
other uobject once uverbs_finalize_object[s] is called.

Signed-off-by: Matan Barak 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford

IB/core: Add macros for declaring methods and attributes

2017-08-31T12:35:11+00:00

This patch adds macros for declaring objects, methods and
attributes. These definitions are later used by downstream patches
to declare some of the default types.

Signed-off-by: Matan Barak 
Reviewed-by: Yishai Hadas 
Signed-off-by: Doug Ledford