ibcore: Kernel space update based on Linux 5.7-rc1.

Overview:

This is the first stage of a RDMA stack upgrade introducing kernel
changes only based on Linux 5.7-rc1.

This patch is based on about f

ibcore: Kernel space update based on Linux 5.7-rc1.

Overview:

This is the first stage of a RDMA stack upgrade introducing kernel
changes only based on Linux 5.7-rc1.

This patch is based on about four main areas of work:
- Update of the IB uobjects system:
- The memory holding so-called AH, CQ, PD, SRQ and UCONTEXT objects
is now managed by ibcore. This also require some changes in the
kernel verbs API. The updated verbs changes are typically about
initialize and deinitialize objects, and remove allocation and
free of memory.

- Update of the uverbs IOCTL framework:
- The parsing and handling of user-space commands has been
completely refactored to integrate with the updated IB uobjects
system.

- Various changes and updates to the generic uverbs interfaces in
device drivers including the new uAPI surface.

- The mlx5_ib_devx.c in mlx5ib and related mlx5 core changes.

Dependencies:

- The mlx4ib driver code has been updated with the minimum changes
needed.

- The mlx5ib driver code has been updated with the minimum changes
needed including DV support.

Compatibility:

- All user-space facing APIs are backwards compatible after this
change.

- All kernel-space facing RDMA APIs are backwards compatible after
this change, with exception of ib_create_ah() and ib_destroy_ah()
which takes a new flag.

- The "ib_device_ops" structure exist, but only contains the driver ID
and some structure sizes.

Differences from Linux:

- Infiniband drivers must use the INIT_IB_DEVICE_OPS() macro to set
the sizes needed for allocating various IB objects, when adding
IB device instances.

Security:

- PRIV_NET_RAW is needed to use raw ethernet transmit features.
- PRIV_DRIVER is needed to use other privileged operations.

Based on upstream Linux, Torvalds (5.7-rc1):
8632e9b5645bbc2331d21d892b0d6961c1a08429

MFC after: 1 week
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31149
Sponsored by: NVIDIA Networking

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Fix LINT kernel build issues after c3987b8ea793c11f61fecb14ef93195a23e3522c .

Fixes the IPOIB_CM and SDP kernel options.

Reported by: lwhsu @
MFC after: 1 week
Sponsored by: NVIDIA Networking

SDP: Also log a nice status string in RX WC error dbg()

Sponsored by: Dell EMC Isilon

sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
pro

sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

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RoCE/infiniband upgrade to Linux v4.9 for kernel and userspace.

This commit merges projects/bsd_rdma_4_9 to head.

List of kernel sources used:
============================

1) kernel sources were c

RoCE/infiniband upgrade to Linux v4.9 for kernel and userspace.

This commit merges projects/bsd_rdma_4_9 to head.

List of kernel sources used:
============================

1) kernel sources were cloned from git://github.com/torvalds/linux.git
Top commit 69973b830859bc6529a7a0468ba0d80ee5117826 - tag: v4.9, linux-4.9

2) krping was cloned from https://github.com/larrystevenwise/krping
Top commit 292a2f1abf0348285e678a82264740d52e4dcfe4

List of userspace sources used:
===============================

1) rdma-core was cloned from https://github.com/linux-rdma/rdma-core.git
Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75

2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git
Top commit 85f841cf209f791c89a075048a907020e924528d

3) libibmad was cloned from git://git.openfabrics.org/~iraweiny/libibmad.git
Tag 1.3.13 with some additional patches from Mellanox.

4) infiniband-diags was cloned from git://git.openfabrics.org/~iraweiny/infiniband-diags.git
Tag 1.6.7 with some additional patches from Mellanox.

NOTES:
======

1) The mthca driver has been removed in kernel and in userspace.
2) All GPLv2 only sources have been removed and where applicable
rewritten from scratch under a BSD license.
3) List of fully supported drivers in userspace and kernel:
a) iw_cxgbe (Chelsio)
b) mlx4ib (Mellanox)
c) mlx5ib (Mellanox)
4) WITH_OFED=YES is still required by make in order to build
OFED userspace and kernel code.
5) Full support has been added for routable RoCE, RoCE v2.

Sponsored by: Mellanox Technologies

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Adapt the existing SDP ULP code to the new ibcore APIs.

Requested by: Sobczak, Bartosz <bartosz.sobczak@intel.com>
Sponsored by: Mellanox Technologies

Merge ^/head r303250 through r304235.

sdp: Use malloc(9) instead of the Linux compat layer.

SDP transmit and receive rings are always created in a sleepable context,
so we can use M_WAITOK and remove error checks.

Sponsored by: EMC / I

sdp: Use malloc(9) instead of the Linux compat layer.

SDP transmit and receive rings are always created in a sleepable context,
so we can use M_WAITOK and remove error checks.

Sponsored by: EMC / Isilon Storage Division

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sdp: Use the correct socket buffer in sdp_post_recvs_needed().

Sponsored by: EMC / Isilon Storage Division

sdp: Always free received control packets after they're handled.

Sponsored by: EMC / Isilon Storage Division

Fix the KASSERT format string arguments after r303507.

sdp: Use the PCB as the rx completion handler argument.

The generic socket may be detached from the PCB before the completion
queue is drained and destroyed, so this change closes a race condition
i

sdp: Use the PCB as the rx completion handler argument.

The generic socket may be detached from the PCB before the completion
queue is drained and destroyed, so this change closes a race condition
in connection teardown.

Sponsored by: EMC / Isilon Storage Division

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sdp: Use an mbufq for received control packets.

This is simpler than the hand-rolled queue, and fixes a use-after-free.

Sponsored by: EMC / Isilon Storage Division

MFH @r294567

MFH

Sponsored by: The FreeBSD Foundation

Merge ^/head r293430 through r293685.

Make it possible for sbappend() to preserve M_NOTREADY on mbufs, just like
sbappendstream() does. Although, M_NOTREADY may appear only on SOCK_STREAM
sockets, due to sendfile(2) supporting only the l

Make it possible for sbappend() to preserve M_NOTREADY on mbufs, just like
sbappendstream() does. Although, M_NOTREADY may appear only on SOCK_STREAM
sockets, due to sendfile(2) supporting only the latter, there is a corner
case of AF_UNIX/SOCK_STREAM socket, that still uses records for the sake
of control data, albeit being stream socket.

Provide private version of m_clrprotoflags(), which understands PRUS_NOTREADY,
similar to m_demote().

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Merge sync of head

Merge from head

Merge r278538 through r279514.

MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Merge ^/head r278756 through r278915.

Fix compilation of the SDP driver and a compile warning after r278886.
Also fix the kernel build rule for mlx4_exp.c.
This fixes the LINT kernel target for amd64.

Sponsored by: Mellanox Technologies

Fix compilation of the SDP driver and a compile warning after r278886.
Also fix the kernel build rule for mlx4_exp.c.
This fixes the LINT kernel target for amd64.

Sponsored by: Mellanox Technologies
MFC after: 1 month

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MFhead @ r277403

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation