cxgbe/iw_cxgbe: Replace the fatal error flag with a stopped flag.

Now that suspend/resume is supported by the base driver, a fatal error
isn't the only reason that the RNIC can stop abruptly. Also,

cxgbe/iw_cxgbe: Replace the fatal error flag with a stopped flag.

Now that suspend/resume is supported by the base driver, a fatal error
isn't the only reason that the RNIC can stop abruptly. Also, this state
is no longer permanent as it's possible to resume operations after a
stop. Rename the flag and associated routines to match the new state of
affairs.

MFC after: 1 week
Sponsored by: Chelsio Communications

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sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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cxgbe/iw_cxgbe: debug routines to dump STAG (steering tag) entries.

t4_dump_stag to dump hw state for a known STAG.

t4_dump_all_stag to dump hw state for all valid STAGs. This routine
walks the en

cxgbe/iw_cxgbe: debug routines to dump STAG (steering tag) entries.

t4_dump_stag to dump hw state for a known STAG.

t4_dump_all_stag to dump hw state for all valid STAGs. This routine
walks the entire STAG region looking for valid entries and this can take
a while for some configurations.

MFC after: 1 week
Sponsored by: Chelsio Communications

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cxgbe: stop open-coding kref access

Sponsored by: Rubicon Communications, LLC ("Netgate")

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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ibcore: Declare ib_post_send() and ib_post_recv() arguments const

Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument con

ibcore: Declare ib_post_send() and ib_post_recv() arguments const

Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument const. This change
makes it necessary to declare the 'bad_wr' argument const too and also to
modify all ULPs that call ib_post_send(), ib_post_recv() or
ib_post_srq_recv(). This patch does not change any functionality but makes
it possible for the compiler to verify whether the
ib_post_(send|recv|srq_recv) really do not modify the posted work request.

Linux commit:
f696bf6d64b195b83ca1bdb7cd33c999c9dcf514
7bb1fafc2f163ad03a2007295bb2f57cfdbfb630
d34ac5cd3a73aacd11009c4fc3ba15d7ea62c411

MFC after: 1 week
Reviewed by: kib
Sponsored by: Mellanox Technologies // NVIDIA Networking

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cxgbe/iw_cxgbe: Support for 512 SGL entries in one memory registration.

Use the correct SGL limit within iw_cxgbe, firmwares >= 1.25.6.0 support
upto 512 entries per MR.

Obtained from: Chelsio Comm

cxgbe/iw_cxgbe: Support for 512 SGL entries in one memory registration.

Use the correct SGL limit within iw_cxgbe, firmwares >= 1.25.6.0 support
upto 512 entries per MR.

Obtained from: Chelsio Communications
MFC after: 1 week
Sponsored by: Chelsio Communications

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cxgbe(4): Remove some dead code.

MFC after: 3 days

cxgbe: remove unused linux headers

Remove unused #includes of LinuxKPI headers noticed while trying to
solve LinuxKPI struct net_device and related functions.
Neither netdevice.h nor inetdevice.h no

cxgbe: remove unused linux headers

Remove unused #includes of LinuxKPI headers noticed while trying to
solve LinuxKPI struct net_device and related functions.
Neither netdevice.h nor inetdevice.h nor notifier.h seem to be needed.
This takes cxgbe(4) out of the picture of D29366.

Sponsored-by: The FreeBSD Foundation
MFC-after: 2 weeks
Reviewed-by: np
X-D-R: D29366 (extracted as further cleanup)
Differential Revision: https://reviews.freebsd.org/D29432

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cxgbe/iw_cxgbe: Create a LinuxKPI pci device for an adapter and use it
as the dma_device during RDMA registration.

cxgbe's struct device cannot be used as-is because it's a native FreeBSD
driver and

cxgbe/iw_cxgbe: Create a LinuxKPI pci device for an adapter and use it
as the dma_device during RDMA registration.

cxgbe's struct device cannot be used as-is because it's a native FreeBSD
driver and ibcore is LinuxKPI based.

MFC after: 1 week
MFC after: r360196

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cxgbe/iw_cxgbe: Do not allow memory registrations with page size greater
than 128MB, which is the maximum supported by the hardware in RDMA mode.

Obtained from: Chelsio Communications
MFC after: 3 d

cxgbe/iw_cxgbe: Do not allow memory registrations with page size greater
than 128MB, which is the maximum supported by the hardware in RDMA mode.

Obtained from: Chelsio Communications
MFC after: 3 days
Sponsored by: Chelsio Communications

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MFHead @r350386

Sponsored by: The FreeBSD Foundation

cxgbe/iw_cxgbe: Remove unused field from the endpoint structure.

MFC after: 3 days

MFHead @345353

iw_cxgbe: Remove unused smac_idx from the ep structure.

Submitted by: Krishnamraju Eraparaju @ Chelsio

cxgbe/iw_cxgbe: Use DSGLs to write to card's memory when appropriate.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications

Merge ^/head r337646 through r338014.

Remove unused stuff from iw_cxgbe.h

iw_cxgbe: Remove declaration of a function that no longer exists.

Merge ^/head r327886 through r327930.

cxgbe/iw_cxgbe: Remove duplicates to fix compilation with recent gcc.

sys/dev: further 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

sys/dev: further 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.

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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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Update the iw_cxgbe bits in the projects branch.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications