linux.git/include/uapi/rdma, branch v4.16

IB/uverbs: Use __aligned_u64 for uapi headers

2018-02-15T21:59:45+00:00

This has no impact on the structure layout since these structs already
have their u64s already properly aligned, but it does document that we
have this requirement for 32 bit compatibility.

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

RDMA/netlink: Hide unimplemented NLDEV commands

2018-01-31T21:30:04+00:00

The nldev was implemented by following devlink implementation,
including SET/DEL/NEW commands. However these commands were not
implemented and hence don't need to be exposed.

Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

RDMA/nldev: Provide detailed QP information

2018-01-30T03:21:41+00:00

Implement RDMA nldev netlink interface to get detailed information on each
QP in the system. This includes the owning process or kernel ULP and
detailed information from the qp_attrs.

Currently only the dumpit variant is implemented.

Reviewed-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Reviewed-by: Steve Wise 
Signed-off-by: Jason Gunthorpe

RDMA/nldev: Provide global resource utilization

2018-01-30T03:21:40+00:00

Expose through the netlink interface the global per-device utilization of
the supported object types.

Provide both dumpit and doit callbacks.

As an example of possible output from rdmatool for system with 5
mlx5 cards:

$ rdma res
1: mlx5_0: qp 4 cq 5 pd 3
2: mlx5_1: qp 4 cq 5 pd 3
3: mlx5_2: qp 4 cq 5 pd 3
4: mlx5_3: qp 2 cq 3 pd 2
5: mlx5_4: qp 4 cq 5 pd 3

Reviewed-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Reviewed-by: Steve Wise 
Signed-off-by: Jason Gunthorpe

RDMA: Move enum ib_cq_creation_flags to uapi headers

2018-01-29T19:58:34+00:00

The flags field the enum is used with comes directly from the uapi
so it belongs in the uapi headers for clarity and so userspace can
use it.

Signed-off-by: Jason Gunthorpe

IB/mlx5: Mmap the HCA's clock info to user-space

2018-01-18T19:49:21+00:00

This patch maps the new page to user space applications to
allow converting a user space completion timestamp to system wall
time at the lowest possible latency cost.
By using a versioning scheme we allow compatibility between current
and future userspace libraries.
The change moves mlx5_ib_mmap_cmd enum from mlx5_ib.h to the
abi header file mlx5-abi.h.

Reviewed-by: Alex Vesker 
Reviewed-by: Yishai Hadas 
Signed-off-by: Feras Daoud 
Signed-off-by: Eitan Rabin 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

net/mlx5e: Add clock info page to mlx5 core devices

2018-01-18T19:49:21+00:00

Adds a new page to mlx5 core containing clock info data that allows
user level applications to translate between cqe timestamp to
nanoseconds. The information stored into this page is represented
through mlx5_ib_clock_info.

In order to synchronize between kernel and user space a sequence
number is incremented at the beginning and end of each update.
An odd number means the data is being updated while an even means
the access was already done. To guarantee that the data structure
was accessed atomically user will:

repeat:
        seq1 = 
        goto  while odd
        
        seq2 = 
        if seq1 != seq2 goto repeat

Reviewed-by: Yishai Hadas 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: Alex Vesker 
Signed-off-by: Feras Daoud 
Signed-off-by: Eitan Rabin 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

RDMA/bnxt_re: Add SRQ support for Broadcom adapters

2018-01-18T19:49:19+00:00

Shared receive queue (SRQ) is defined as a pool of
receive buffers shared among multiple QPs which belong
to same protection domain in a given process context.
Use of SRQ reduces the memory foot print of IB applications.

Broadcom adapters support SRQ, adding code-changes to enable
shared receive queue.

Signed-off-by: Devesh Sharma 
Signed-off-by: Doug Ledford

RDMA: Mark imm_data as be32 in the verbs uapi header

2018-01-15T22:33:21+00:00

This matches what the userspace copy of this header has been doing
for a while. imm_data is an opaque 4 byte array carried over the network,
and invalidate_rkey is in CPU byte order.

Signed-off-by: Jason Gunthorpe

IB/mlx5: Add support for DC target QP

2018-01-08T18:38:51+00:00

A DC Target (DCT) QP is represented in the hardware as a unique object.
This object is created by CREATE_DCT command and destroyed by DESTROY_DCT
command. However, in the driver we describe it as a QP.

The hardware command that creates a DCT needs parameters that the verb
create_qp() does not provide. Those remaining parameters are provided
with the call to the verb modify_qp(). Therefore we delay the actual
creation of a DCT in the hardware until the stage of modify_qp() to RTR.

A support for query_qp() was added as well. It uses QUERY_DCT command to
retrieve the applicable fields.

Signed-off-by: Moni Shoua 
Reviewed-by: Yishai Hadas 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Jason Gunthorpe