linux-toradex.git/include/uapi/rdma, branch v4.10-rc1

Merge branch 'vmw_pvrdma' into merge-test

2016-12-14T19:56:21+00:00

IB: Add vmw_pvrdma driver

2016-12-14T19:55:10+00:00

This patch series adds a driver for a paravirtual RDMA device. The
device is developed for VMware's Virtual Machines and allows existing RDMA
applications to continue to use existing Verbs API when deployed in VMs
on ESXi. We recently did a presentation in the OFA Workshop [1] regarding
this device.

Description and RDMA Support
============================
The virtual device is exposed as a dual function PCIe device. One part
is a virtual network device (VMXNet3) which provides networking properties
like MAC, IP addresses to the RDMA part of the device. The networking
properties are used to register GIDs required by RDMA applications to
communicate.

These patches add support and the all required infrastructure for
letting applications use such a device. We support the mandatory Verbs API as
well as the base memory management extensions (Local Inv, Send with Inv and
Fast Register Work Requests). We currently support both Reliable Connected
and Unreliable Datagram QPs but do not support Shared Receive Queues
(SRQs).

Also, we support the following types of Work Requests:
 o Send/Receive (with or without Immediate Data)
 o RDMA Write (with or without Immediate Data)
 o RDMA Read
 o Local Invalidate
 o Send with Invalidate
 o Fast Register Work Requests

This version only adds support for version 1 of RoCE. We will add RoCEv2
support in a future patch. We do support registration of both MAC-based
and IP-based GIDs. I have also created a git tree for our user-level driver
[2].

Testing
=======
We have tested this internally for various types of Guest OS - Red Hat,
Centos, Ubuntu 12.04/14.04/16.04, Oracle Enterprise Linux, SLES 12
using backported versions of this driver. The tests included several
runs of the performance tests (included with OFED), Intel MPI PingPong
benchmark on OpenMPI, krping for FRWRs. Mellanox has been kind enough
to test the backported version of the driver internally on their hardware
using a VMware provided ESX build. I have also applied and tested this
with Doug's k.o/for-4.9 branch (commit 5603910b). Note, that this patch
series should be applied all together. I split out the commits so that
it may be easier to review.

PVRDMA Resources
================
[1] OFA Workshop Presentation -
https://openfabrics.org/images/eventpresos/2016presentations/102parardma.pdf

[2] Libpvrdma User-level library -
http://git.openfabrics.org/?p=~aditr/libpvrdma.git;a=summary

Reviewed-by: Jorgen Hansen 
Reviewed-by: George Zhang 
Reviewed-by: Aditya Sarwade 
Reviewed-by: Bryan Tan 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Adit Ranadive 
Signed-off-by: Doug Ledford

Merge branches 'misc', 'qedr', 'reject-helpers', 'rxe' and 'srp' into merge-test

2016-12-14T19:44:47+00:00

Merge branch 'mlx' into merge-test

2016-12-14T19:44:25+00:00

Merge branch 'hfi1' into merge-test

2016-12-14T19:44:08+00:00

rdma UAPI: Use __kernel_sockaddr_storage

2016-12-14T16:42:39+00:00

The kernel side is #ifdef'd to this type, and the UAPI header
should use it directly. It has slightly different alignment
requirments from the usual user space version.

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

IB/uverbs: Extend modify_qp and support packet pacing

2016-12-13T18:39:51+00:00

An new uverbs command ib_uverbs_ex_modify_qp is added to support more QP
attributes. User driver should choose to call the legacy/extended API
based on input mask.

IB_USER_LAST_QP_ATTR_MASK is added to indicated the maximum bit position
which supports legacy ib_uverbs_modify_qp.
IB_USER_LEGACY_LAST_QP_ATTR_MASK indicates the maximum bit position
which supports ib_uverbs_ex_modify_qp, the value of this mask should be
updated if new mask is added later.

Along with this change, rate_limit is supported by the extended command,
user driver could use it to control packet packing.

Signed-off-by: Bodong Wang 
Reviewed-by: Matan Barak 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

IB/mlx5: Report mlx5 packet pacing capabilities when querying device

2016-12-13T18:39:50+00:00

Enable mlx5 based hardware to report packet pacing capabilities
from kernel to user space. Packet pacing allows to limit the rate to any
number between the maximum and minimum, based on user settings.

The capabilities are exposed to user space through query_device by uhw.
The following capabilities are reported:

1. The maximum and minimum rate limit in kbps supported by packet pacing.
2. Bitmap showing which QP types are supported by packet pacing operation.

Signed-off-by: Bodong Wang 
Reviewed-by: Matan Barak 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

IB/mlx5: Use kernel driver to help userspace create ah

2016-12-13T18:38:49+00:00

Resolving a MAC address for a given IP address in userspace is inefficient.
This patch lets mlx5 user driver using the kernel driver to resolve the mac
and get the answer in the private section of the response.

Signed-off-by: Moni Shoua 
Reviewed-by: Yishai Hadas 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

IB/mlx5: Report that device has udata response in create_ah

2016-12-13T18:37:19+00:00

To make mlx5 user driver aware of whether kernel driver returns dmac
in user data response add a new flag that will be returned back to
user-space through alloc_ucontext.

Signed-off-by: Moni Shoua 
Reviewed-by: Yishai Hadas 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford