RDMA: Disable IB HW for UML

Disable all of drivers/infiniband/hw/ and rdmavt for UML builds until
someone needs it and provides patches to support it.

This prevents build errors in hw/qib/qib_wc_x8

RDMA: Disable IB HW for UML

Disable all of drivers/infiniband/hw/ and rdmavt for UML builds until
someone needs it and provides patches to support it.

This prevents build errors in hw/qib/qib_wc_x86_64.c.

Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Dennis Dalessandro <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Anton Ivanov <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>

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RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter

Add a RDMA VF driver for Microsoft Azure Network Adapter (MANA).

Co-developed-by: Ajay Sharma <[email protected]>
Signed-off-by

RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter

Add a RDMA VF driver for Microsoft Azure Network Adapter (MANA).

Co-developed-by: Ajay Sharma <[email protected]>
Signed-off-by: Ajay Sharma <[email protected]>
Reviewed-by: Dexuan Cui <[email protected]>
Signed-off-by: Long Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>

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RDMA/erdma: Add driver to kernel build environment

Add erdma to the kernel build environment, and sort the source
order in drivers/infiniband/Kconfig.

Link: https://lore.kernel.org/r/20220727014927

RDMA/erdma: Add driver to kernel build environment

Add erdma to the kernel build environment, and sort the source
order in drivers/infiniband/Kconfig.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Cheng Xu <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/irdma: Add irdma Kconfig/Makefile and remove i40iw

Add Kconfig and Makefile to build irdma driver.

Remove i40iw driver and add an alias in irdma.

Remove legacy exported symbols i40e_register_

RDMA/irdma: Add irdma Kconfig/Makefile and remove i40iw

Add Kconfig and Makefile to build irdma driver.

Remove i40iw driver and add an alias in irdma.

Remove legacy exported symbols i40e_register_client
and i40e_unregister_client from i40e as they are no
longer used.

irdma is the replacement driver that supports X722.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Shiraz Saleem <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/umem: Support importing dma-buf as user memory region

Dma-buf is a standard cross-driver buffer sharing mechanism that can be
used to support peer-to-peer access from RDMA devices.

Device memo

RDMA/umem: Support importing dma-buf as user memory region

Dma-buf is a standard cross-driver buffer sharing mechanism that can be
used to support peer-to-peer access from RDMA devices.

Device memory exported via dma-buf is associated with a file descriptor.
This is passed to the user space as a property associated with the buffer
allocation. When the buffer is registered as a memory region, the file
descriptor is passed to the RDMA driver along with other parameters.

Implement the common code for importing dma-buf object and mapping dma-buf
pages.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jianxin Xiong <[email protected]>
Reviewed-by: Sean Hefty <[email protected]>
Acked-by: Michael J. Ruhl <[email protected]>
Acked-by: Christian Koenig <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs

dma_virt_ops requires that all pages have a kernel virtual address.
Introduce a INFINIBAND_VIRT_DMA Kconfig symbol that depends on

RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs

dma_virt_ops requires that all pages have a kernel virtual address.
Introduce a INFINIBAND_VIRT_DMA Kconfig symbol that depends on !HIGHMEM
and make all three drivers depend on the new symbol.

Also remove the ARCH_DMA_ADDR_T_64BIT dependency, which has been obsolete
since commit 4965a68780c5 ("arch: define the ARCH_DMA_ADDR_T_64BIT config
symbol in lib/Kconfig")

Fixes: 551199aca1c3 ("lib/dma-virt: Add dma_virt_ops")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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IB/core: Improve ODP to use hmm_range_fault()

Move to use hmm_range_fault() instead of get_user_pags_remote() to improve
performance in a few aspects:

This includes:
- Dropping the need to allocate

IB/core: Improve ODP to use hmm_range_fault()

Move to use hmm_range_fault() instead of get_user_pags_remote() to improve
performance in a few aspects:

This includes:
- Dropping the need to allocate and free memory to hold its output

- No need any more to use put_page() to unpin the pages

- The logic to detect contiguous pages is done based on the returned
order, no need to run per page and evaluate.

In addition, moving to use hmm_range_fault() enables to reduce page faults
in the system with it's snapshot mode, this will be introduced in next
patches from this series.

As part of this, cleanup some flows and use the required data structures
to work with hmm_range_fault().

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Yishai Hadas <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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IB/uverbs: Enable CQ ioctl commands by default

Enable CQ ioctl commands by default, this functionality is fully mature
to be used over ioctl, no reason to maintain any more the EXP KCONFIG
entry to

IB/uverbs: Enable CQ ioctl commands by default

Enable CQ ioctl commands by default, this functionality is fully mature
to be used over ioctl, no reason to maintain any more the EXP KCONFIG
entry to enable it.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Yishai Hadas <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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treewide: replace '---help---' in Kconfig files with 'help'

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasi

treewide: replace '---help---' in Kconfig files with 'help'

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

a) 4 spaces + '---help---'
b) 7 spaces + '---help---'
c) 8 spaces + '---help---'
d) 1 space + 1 tab + '---help---'
e) 1 tab + '---help---' (correct indentation)
f) 1 tab + 1 space + '---help---'
g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

$ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <[email protected]>

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RDMA/rtrs: include client and server modules into kernel compilation

Add rtrs Makefile, Kconfig and also corresponding lines into upper layer
infiniband/ulp files.

Link: https://lore.kernel.org/r/2

RDMA/rtrs: include client and server modules into kernel compilation

Add rtrs Makefile, Kconfig and also corresponding lines into upper layer
infiniband/ulp files.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Danil Kipnis <[email protected]>
Signed-off-by: Jack Wang <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/iw_cxgb3: Remove the iw_cxgb3 module from kernel

Remove iw_cxgb3 module from kernel as the corresponding HW Chelsio T3 has
reached EOL.

Link: https://lore.kernel.org/r/20190930074252.20133-1-b

RDMA/iw_cxgb3: Remove the iw_cxgb3 module from kernel

Remove iw_cxgb3 module from kernel as the corresponding HW Chelsio T3 has
reached EOL.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Potnuri Bharat Teja <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/odp: Use the common interval tree library instead of generic

ODP is working with userspace VA's in the interval tree which always fit
into an unsigned long, so we can use the common code.

This

RDMA/odp: Use the common interval tree library instead of generic

ODP is working with userspace VA's in the interval tree which always fit
into an unsigned long, so we can use the common code.

This comes at a cost of a 16 byte increase in ib_umem_odp struct size due
to storing the interval tree start/last in addition to the umem
addr/length. However these values were computed and are performance
critical for the interval lookup, so this seems like a worthwhile trade
off.

Removes 2k of .text from the kernel.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/nldev: Added configuration of RDMA dynamic interrupt moderation to netlink

Added parameter in ib_device for enabling dynamic interrupt moderation so
that it can be configured in userspace using

RDMA/nldev: Added configuration of RDMA dynamic interrupt moderation to netlink

Added parameter in ib_device for enabling dynamic interrupt moderation so
that it can be configured in userspace using rdma tool.

In order to set adaptive-moderation for an ib device the command is:
rdma dev set [DEV] adaptive-moderation [on|off]
Please set on/off.

rdma dev show
0: mlx5_0: node_type ca fw 16.26.0055 node_guid 248a:0703:00a5:29d0
sys_image_guid 248a:0703:00a5:29d0 adaptive-moderation on

rdma resource show cq
dev mlx5_0 cqn 0 cqe 1023 users 4 poll-ctx UNBOUND_WORKQUEUE
adaptive-moderation off comm [ib_core]

Signed-off-by: Yamin Friedman <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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rdma/siw: addition to kernel build environment

Broken up commit to add the Soft iWarp RDMA driver.

Signed-off-by: Bernard Metzler <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]

rdma/siw: addition to kernel build environment

Broken up commit to add the Soft iWarp RDMA driver.

Signed-off-by: Bernard Metzler <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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rdma: Remove nes

This driver was first merged over 10 years ago and has not seen major
activity by the authors in the last 7 years. However, in that time it has
been patched 150 times to adapt it to

rdma: Remove nes

This driver was first merged over 10 years ago and has not seen major
activity by the authors in the last 7 years. However, in that time it has
been patched 150 times to adapt it to changing kernel APIs.

Further, the hardware has several issues, like not supporting 64 bit DMA,
that make it rather uninteresting for use with modern systems and RDMA.

Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Leon Romanovsky <[email protected]>
Reviewed-by: Shiraz Saleem <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>

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rdma: Delete the ib_ucm module

This has been marked CONFIG_BROKEN for over a year now with no complaints.
Delete the whole thing for good.

The module provided the /dev/infiniband/ucmX interface.

S

rdma: Delete the ib_ucm module

This has been marked CONFIG_BROKEN for over a year now with no complaints.
Delete the whole thing for good.

The module provided the /dev/infiniband/ucmX interface.

Signed-off-by: Jason Gunthorpe <[email protected]>

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treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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RDMA/efa: Add driver to Kconfig/Makefile

Add EFA Makefile and Kconfig.

Signed-off-by: Gal Pressman <[email protected]>
Reviewed-by: Steve Wise <[email protected]>
Signed-off-by: Jason G

RDMA/efa: Add driver to Kconfig/Makefile

Add EFA Makefile and Kconfig.

Signed-off-by: Gal Pressman <[email protected]>
Reviewed-by: Steve Wise <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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Make anon_inodes unconditional

Make the anon_inodes facility unconditional so that it can be used by core
VFS code and pidfd code.

Signed-off-by: David Howells <[email protected]>
Signed-off-by:

Make anon_inodes unconditional

Make the anon_inodes facility unconditional so that it can be used by core
VFS code and pidfd code.

Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
[[email protected]: adapt commit message to mention pidfds]
Signed-off-by: Christian Brauner <[email protected]>

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Make anon_inodes unconditional

Make the anon_inodes facility unconditional so that it can be used by core
VFS code.

Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <viro@z

Make anon_inodes unconditional

Make the anon_inodes facility unconditional so that it can be used by core
VFS code.

Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>

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IB/{core,uverbs}: Move ib_umem_xxx functions from ib_core to ib_uverbs

The next patch will add dependency from ib_umem_get in to ib_uverbs so
move the required ib_umem_xxx functionality to it's corr

IB/{core,uverbs}: Move ib_umem_xxx functions from ib_core to ib_uverbs

The next patch will add dependency from ib_umem_get in to ib_uverbs so
move the required ib_umem_xxx functionality to it's correct module -
ib_uverbs - and avoid circular dependecy from the form of ib_core ->
ib_uverbs -> ib_core in depmod.

Since this now requires all drivers to be build modular if uverbs is
modular, hoist the test a couple drivers had into the main kconfig and
apply it to all drivers uniformly.

Signed-off-by: Shamir Rabinovitch <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA: Fix building with CONFIG_MMU=n

The zap_vma_ptes() is declared but not defined on NOMMU kernels, causing a
link error for the newly added uverbs code:

drivers/infiniband/core/uverbs_main.o: In

RDMA: Fix building with CONFIG_MMU=n

The zap_vma_ptes() is declared but not defined on NOMMU kernels, causing a
link error for the newly added uverbs code:

drivers/infiniband/core/uverbs_main.o: In function `uverbs_user_mmap_disassociate':
uverbs_main.c:(.text+0x114c): undefined reference to `zap_vma_ptes'
drivers/infiniband/core/uverbs_main.o: In function `rdma_umap_open':
uverbs_main.c:(.text+0x53c): undefined reference to `zap_vma_ptes'

Since all user access for all of our drivers depend on remapping pages to
user space disable USER_ACCESS when there is no mmu.

Fixes: 5f9794dc94f5 ("RDMA/ucontext: Add a core API for mmaping driver IO memory")
Reported-by: Arnd Bergmann <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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IB/ucm: fix UCM link error

Building UCM with CONFIG_INFINIBAND_USER_ACCESS=m results in a
set of link errors including:

drivers/infiniband/core/ucm.o: In function `ib_ucm_event_handler':
ucm.c:(.te

IB/ucm: fix UCM link error

Building UCM with CONFIG_INFINIBAND_USER_ACCESS=m results in a
set of link errors including:

drivers/infiniband/core/ucm.o: In function `ib_ucm_event_handler':
ucm.c:(.text+0x6dc): undefined reference to `ib_copy_path_rec_to_user'
drivers/infiniband/core/ucma.o: In function `ucma_event_handler':
ucma.c:(.text+0xdc0): undefined reference to `ib_copy_ah_attr_to_user'

To get it to build-test again, this makes the option itself a
tristate, which lets Kconfig figure out the dependency correctly.

Fixes: 486edfb1039d ("IB/ucm: Fix compiling ucm.c")
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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IB/ucm: Fix compiling ucm.c

Even though this interface is marked CONFIG_BROKEN we still expect it to
compile, at least until we delete it completely.

Also mark INFINIBAND_USER_ACCESS_UCM with COMPI

IB/ucm: Fix compiling ucm.c

Even though this interface is marked CONFIG_BROKEN we still expect it to
compile, at least until we delete it completely.

Also mark INFINIBAND_USER_ACCESS_UCM with COMPILE_TEST so these situations
can be detected.

Fixes: e7ff98aefc9e ("RDMA/cma: Constify path record, ib_cm_event, listen_id pointers")
Signed-off-by: Jason Gunthorpe <[email protected]>

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RDMA/ucm: Mark UCM interface as BROKEN

In commit 357d23c811a7 ("Remove the obsolete libibcm library")
in rdma-core [1], we removed obsolete library which used the
/dev/infiniband/ucmX interface.

Fo

RDMA/ucm: Mark UCM interface as BROKEN

In commit 357d23c811a7 ("Remove the obsolete libibcm library")
in rdma-core [1], we removed obsolete library which used the
/dev/infiniband/ucmX interface.

Following multiple syzkaller reports about non-sanitized
user input in the UCMA module, the short audit reveals the same
issues in UCM module too.

It is better to disable this interface in the kernel,
before syzkaller team invests time and energy to harden
this unused interface.

[1] https://github.com/linux-rdma/rdma-core/pull/279

Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

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