Commit Graph

685 Commits

Author SHA1 Message Date
Leon Romanovsky
e26e7b88f6 RDMA: Change MAD processing function to remove extra casting and parameter
All users of process_mad() converts input pointers from ib_mad_hdr to be
ib_mad, update the function declaration to use ib_mad directly.

Also remove not used input MAD size parameter.

Link: https://lore.kernel.org/r/20191029062745.7932-17-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Tested-By: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-12 20:20:15 -04:00
Leon Romanovsky
dd0b0159f7 RDMA/mad: Do not check MAD sizes in roce and ib drivers
All callers for process_mad allocate MAD structures with proper sizes,
there is no need to recheck it.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-06 15:55:22 -04:00
Leon Romanovsky
be4a8d4673 RDMA/mad: Allocate zeroed MAD buffer
Ensure that MAD output buffer is zero-based allocated in all the callers
of process_mad and remove the various memset()'s from the drivers.

Link: https://lore.kernel.org/r/20191029062745.7932-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-06 15:38:28 -04:00
Michal Kalderon
c043ff2cfb RDMA: Connect between the mmap entry and the umap_priv structure
The rdma_user_mmap_io interface created a common interface for drivers to
correctly map hw resources and zap them once the ucontext is destroyed
enabling the drivers to safely free the hw resources.

However, this meant the drivers need to delay freeing the resource to the
ucontext destroy phase to ensure they were no longer mapped.  The new
mechanism for a common way of handling user/driver address mapping enabled
notifying the driver if all umap_priv mappings were removed, and enabled
freeing the hw resources when they are done with and not delay it until
ucontext destroy.

Since not all drivers use the mechanism, NULL can be sent to the
rdma_user_mmap_io interface to continue working as before.  Drivers that
use the mmap_xa interface can pass the entry being mapped to the
rdma_user_mmap_io function to be linked together.

Link: https://lore.kernel.org/r/20191030094417.16866-4-michal.kalderon@marvell.com
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-06 13:08:01 -04:00
Jason Gunthorpe
75c66515e4 Merge tag 'v5.3-rc8' into rdma.git for-next
To resolve dependencies in following patches

mlx5_ib.h conflict resolved by keeing both hunks

Linux 5.3-rc8

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-09-13 16:59:51 -03:00
Wenwen Wang
5c1baaa82c IB/mlx4: Fix memory leaks
In mlx4_ib_alloc_pv_bufs(), 'tun_qp->tx_ring' is allocated through
kcalloc(). However, it is not always deallocated in the following execution
if an error occurs, leading to memory leaks. To fix this issue, free
'tun_qp->tx_ring' whenever an error occurs.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Link: https://lore.kernel.org/r/1566159781-4642-1-git-send-email-wenwen@cs.uga.edu
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-08-20 13:44:45 -04:00
Kamal Heib
72a7720fca RDMA: Introduce ib_port_phys_state enum
In order to improve readability, add ib_port_phys_state enum to replace
the use of magic numbers.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Andrew Boyer <aboyer@tobark.org>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Acked-by: Bernard Metzler <bmt@zurich.ibm.com>
Link: https://lore.kernel.org/r/20190807103138.17219-2-kamalheib1@gmail.com
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-08-12 10:18:52 -04:00
Leon Romanovsky
913df8c353 RDMA/mlx4: Annotate boolean arguments as bool and not int
Information provided by qp_has_rq() and used latter is boolean, so update
callers to proper type.

Link: https://lore.kernel.org/r/20190704130936.8705-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-25 14:08:29 -03:00
Leon Romanovsky
089b645d19 RDMA/mlx4: Separate creation of RWQ and QP
The mlx4 WQ is implemented with HW QP without special HW object.  Current
implementation which tried to reuse the code did it with common QP
creation flows. Such decision caused to the absence of mlx4_ib_wq struct,
which is needed to ensure proper allocation of ib_wq inside of IB/core.

Separate create_qp_common() to pure QP flow and to create_rq() for RWQ.

Link: https://lore.kernel.org/r/20190704130936.8705-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-25 14:08:29 -03:00
Andrey Konovalov
ecc53f8a3c RDMA/mlx4: Untag user pointers in mlx4_get_umem_mr
This patch is a part of a series that extends kernel ABI to allow to pass
tagged user pointers (with the top byte set to something else other than
0x00) as syscall arguments.

mlx4_get_umem_mr() uses provided user pointers for vma lookups, which can
only by done with untagged pointers.

Untag user pointers in this function.

Link: https://lore.kernel.org/r/7969018013a67ddbbf784ac7afeea5a57b1e2bcb.1563904656.git.andreyknvl@google.com
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-24 16:22:54 -03:00
Linus Torvalds
2a3c389a0f 5.3 Merge window RDMA pull request
A smaller cycle this time. Notably we see another new driver, 'Soft
 iWarp', and the deletion of an ancient unused driver for nes.
 
 - Revise and simplify the signature offload RDMA MR APIs
 
 - More progress on hoisting object allocation boiler plate code out of the
   drivers
 
 - Driver bug fixes and revisions for hns, hfi1, efa, cxgb4, qib, i40iw
 
 - Tree wide cleanups: struct_size, put_user_page, xarray, rst doc conversion
 
 - Removal of obsolete ib_ucm chardev and nes driver
 
 - netlink based discovery of chardevs and autoloading of the modules
   providing them
 
 - Move more of the rdamvt/hfi1 uapi to include/uapi/rdma
 
 - New driver 'siw' for software based iWarp running on top of netdev,
   much like rxe's software RoCE.
 
 - mlx5 feature to report events in their raw devx format to userspace
 
 - Expose per-object counters through rdma tool
 
 - Adaptive interrupt moderation for RDMA (DIM), sharing the DIM core
   from netdev
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "A smaller cycle this time. Notably we see another new driver, 'Soft
  iWarp', and the deletion of an ancient unused driver for nes.

   - Revise and simplify the signature offload RDMA MR APIs

   - More progress on hoisting object allocation boiler plate code out
     of the drivers

   - Driver bug fixes and revisions for hns, hfi1, efa, cxgb4, qib,
     i40iw

   - Tree wide cleanups: struct_size, put_user_page, xarray, rst doc
     conversion

   - Removal of obsolete ib_ucm chardev and nes driver

   - netlink based discovery of chardevs and autoloading of the modules
     providing them

   - Move more of the rdamvt/hfi1 uapi to include/uapi/rdma

   - New driver 'siw' for software based iWarp running on top of netdev,
     much like rxe's software RoCE.

   - mlx5 feature to report events in their raw devx format to userspace

   - Expose per-object counters through rdma tool

   - Adaptive interrupt moderation for RDMA (DIM), sharing the DIM core
     from netdev"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (194 commits)
  RMDA/siw: Require a 64 bit arch
  RDMA/siw: Mark expected switch fall-throughs
  RDMA/core: Fix -Wunused-const-variable warnings
  rdma/siw: Remove set but not used variable 's'
  rdma/siw: Add missing dependencies on LIBCRC32C and DMA_VIRT_OPS
  RDMA/siw: Add missing rtnl_lock around access to ifa
  rdma/siw: Use proper enumerated type in map_cqe_status
  RDMA/siw: Remove unnecessary kthread create/destroy printouts
  IB/rdmavt: Fix variable shadowing issue in rvt_create_cq
  RDMA/core: Fix race when resolving IP address
  RDMA/core: Make rdma_counter.h compile stand alone
  IB/core: Work on the caller socket net namespace in nldev_newlink()
  RDMA/rxe: Fill in wc byte_len with IB_WC_RECV_RDMA_WITH_IMM
  RDMA/mlx5: Set RDMA DIM to be enabled by default
  RDMA/nldev: Added configuration of RDMA dynamic interrupt moderation to netlink
  RDMA/core: Provide RDMA DIM support for ULPs
  linux/dim: Implement RDMA adaptive moderation (DIM)
  IB/mlx5: Report correctly tag matching rendezvous capability
  docs: infiniband: add it to the driver-api bookset
  IB/mlx5: Implement VHCA tunnel mechanism in DEVX
  ...
2019-07-15 20:38:15 -07:00
Jason Gunthorpe
371bb62158 Linux 5.2-rc6
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Merge tag 'v5.2-rc6' into rdma.git for-next

For dependencies in next patches.

Resolve conflicts:
- Use uverbs_get_cleared_udata() with new cq allocation flow
- Continue to delete nes despite SPDX conflict
- Resolve list appends in mlx5_command_str()
- Use u16 for vport_rule stuff
- Resolve list appends in struct ib_client

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-28 21:18:23 -03:00
Jason A. Donenfeld
9285ec4c8b timekeeping: Use proper clock specifier names in functions
This makes boot uniformly boottime and tai uniformly clocktai, to
address the remaining oversights.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190621203249.3909-2-Jason@zx2c4.com
2019-06-22 12:11:27 +02:00
Leon Romanovsky
836a0fbb3e RDMA: Check umem pointer validity prior to release
Update ib_umem_release() to behave similarly to kfree() and allow
submitting NULL pointer as safe input to this function.

Fixes: a52c8e2469 ("RDMA: Clean destroy CQ in drivers do not return errors")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-06-20 15:17:59 -04:00
Leon Romanovsky
a49b1dc7ae RDMA: Convert destroy_wq to be void
All callers of destroy WQ are always success and there is no need
to check their return value, so convert destroy_wq to be void.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-06-20 14:37:02 -04:00
Leon Romanovsky
e39afe3d6d RDMA: Convert CQ allocations to be under core responsibility
Ensure that CQ is allocated and freed by IB/core and not by drivers.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Tested-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-06-11 16:39:49 -04:00
Leon Romanovsky
a52c8e2469 RDMA: Clean destroy CQ in drivers do not return errors
Like all other destroy commands, .destroy_cq() call is not supposed
to fail. In all flows, the attempt to return earlier caused to memory
leaks.

This patch converts .destroy_cq() to do not return any errors.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Gal Pressman <galpress@amazon.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-06-11 16:17:10 -04:00
Jason Gunthorpe
7a15414252 RDMA: Move owner into struct ib_device_ops
This more closely follows how other subsytems work, with owner being a
member of the structure containing the function pointers.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-10 16:56:03 -03:00
Jason Gunthorpe
72c6ec18eb RDMA: Move uverbs_abi_ver into struct ib_device_ops
No reason for every driver to emit code to set this, just make it part of
the driver's existing static const ops structure.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-10 16:56:02 -03:00
Jason Gunthorpe
b9560a419b RDMA: Move driver_id into struct ib_device_ops
No reason for every driver to emit code to set this, just make it part of
the driver's existing static const ops structure.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-10 16:56:02 -03:00
Yuval Shaia
8ce0048f76 IB/mlx4: Delete unused func arg
The function argument virt_addr is not in use - delete it.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-21 15:27:25 -03:00
Jason Gunthorpe
d2183c6f19 RDMA/umem: Move page_shift from ib_umem to ib_odp_umem
This value has always been set to PAGE_SHIFT in the core code, the only
thing that does differently was the ODP path. Move the value into the ODP
struct and still use it for ODP, but change all the non-ODP things to just
use PAGE_SHIFT/PAGE_SIZE/PAGE_MASK directly.

Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2019-05-21 15:23:24 -03:00
Thomas Gleixner
ec8f24b7fa 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 <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Linus Torvalds
dce45af5c2 5.2 Merge Window pull request
This has been a smaller cycle than normal. One new driver was accepted,
 which is unusual, and at least one more driver remains in review on the
 list.
 
 - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4, vmw_pvrdma
 
 - Many patches from MatthewW converting radix tree and IDR users to use
   xarray
 
 - Introduction of tracepoints to the MAD layer
 
 - Build large SGLs at the start for DMA mapping and get the driver to
   split them
 
 - Generally clean SGL handling code throughout the subsystem
 
 - Support for restricting RDMA devices to net namespaces for containers
 
 - Progress to remove object allocation boilerplate code from drivers
 
 - Change in how the mlx5 driver shows representor ports linked to VFs
 
 - mlx5 uapi feature to access the on chip SW ICM memory
 
 - Add a new driver for 'EFA'. This is HW that supports user space packet
   processing through QPs in Amazon's cloud
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a smaller cycle than normal. One new driver was
  accepted, which is unusual, and at least one more driver remains in
  review on the list.

  Summary:

   - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4,
     vmw_pvrdma

   - Many patches from MatthewW converting radix tree and IDR users to
     use xarray

   - Introduction of tracepoints to the MAD layer

   - Build large SGLs at the start for DMA mapping and get the driver to
     split them

   - Generally clean SGL handling code throughout the subsystem

   - Support for restricting RDMA devices to net namespaces for
     containers

   - Progress to remove object allocation boilerplate code from drivers

   - Change in how the mlx5 driver shows representor ports linked to VFs

   - mlx5 uapi feature to access the on chip SW ICM memory

   - Add a new driver for 'EFA'. This is HW that supports user space
     packet processing through QPs in Amazon's cloud"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits)
  RDMA/ipoib: Allow user space differentiate between valid dev_port
  IB/core, ipoib: Do not overreact to SM LID change event
  RDMA/device: Don't fire uevent before device is fully initialized
  lib/scatterlist: Remove leftover from sg_page_iter comment
  RDMA/efa: Add driver to Kconfig/Makefile
  RDMA/efa: Add the efa module
  RDMA/efa: Add EFA verbs implementation
  RDMA/efa: Add common command handlers
  RDMA/efa: Implement functions that submit and complete admin commands
  RDMA/efa: Add the ABI definitions
  RDMA/efa: Add the com service API definitions
  RDMA/efa: Add the efa_com.h file
  RDMA/efa: Add the efa.h header file
  RDMA/efa: Add EFA device definitions
  RDMA: Add EFA related definitions
  RDMA/umem: Remove hugetlb flag
  RDMA/bnxt_re: Use core helpers to get aligned DMA address
  RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size
  RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks
  RDMA/umem: Add API to find best driver supported page size in an MR
  ...
2019-05-09 09:02:46 -07:00
Parav Pandit
a70c07397f RDMA: Introduce and use GID attr helper to read RoCE L2 fields
Instead of RoCE drivers figuring out vlan, smac fields while working on
QP/AH, provide a helper routine to read the L2 fields such as vlan_id and
source mac address.

This moves logic from mlx5 driver to core for wider usage for RoCE ports.

This is a preparation patch to allow detaching netdev in subsequent patch.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-03 11:10:02 -03:00
Leon Romanovsky
68e326dea1 RDMA: Handle SRQ allocations by IB/core
Convert SRQ allocation from drivers to be in the IB/core

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Leon Romanovsky
d345691471 RDMA: Handle AH allocations by IB/core
Simplify drivers by ensuring lifetime of ib_ah object. The changes
in .create_ah() go hand in hand with relevant update in .destroy_ah().

We will use this opportunity and convert .destroy_ah() to don't fail, as
it was suggested a long time ago, because there is nothing to do in case
of failure during destroy.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Will Deacon
fb24ea52f7 drivers: Remove explicit invocations of mmiowb()
mmiowb() is now implied by spin_unlock() on architectures that require
it, so there is no reason to call it from driver code. This patch was
generated using coccinelle:

	@mmiowb@
	@@
	- mmiowb();

and invoked as:

$ for d in drivers include/linux/qed sound; do \
spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done

NOTE: mmiowb() has only ever guaranteed ordering in conjunction with
spin_unlock(). However, pairing each mmiowb() removal in this patch with
the corresponding call to spin_unlock() is not at all trivial, so there
is a small chance that this change may regress any drivers incorrectly
relying on mmiowb() to order MMIO writes between CPUs using lock-free
synchronisation. If you've ended up bisecting to this commit, you can
reintroduce the mmiowb() calls using wmb() instead, which should restore
the old behaviour on all architectures other than some esoteric ia64
systems.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-08 12:01:02 +01:00
Shamir Rabinovitch
ff23dfa134 IB: Pass only ib_udata in function prototypes
Now when ib_udata is passed to all the driver's object create/destroy APIs
the ib_udata will carry the ib_ucontext for every user command. There is
no need to also pass the ib_ucontext via the functions prototypes.

Make ib_udata the only argument psssed.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 15:00:47 -03:00
Shamir Rabinovitch
bdeacabd1a IB: Remove 'uobject->context' dependency in object destroy APIs
Now that we have the udata passed to all the ib_xxx object destroy APIs
and the additional macro 'rdma_udata_to_drv_context' to get the
ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally
start to remove the dependency of the drivers in the
ib_xxx->uobject->context.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 14:59:35 -03:00
Shamir Rabinovitch
c4367a2635 IB: Pass uverbs_attr_bundle down ib_x destroy path
The uverbs_attr_bundle with the ucontext is sent down to the drivers ib_x
destroy path as ib_udata. The next patch will use the ib_udata to free the
drivers destroy path from the dependency in 'uobject->context' as we
already did for the create path.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 14:57:35 -03:00
Matthew Wilcox
f1430536e0 mlx4: Convert pv_id_table to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 10:09:54 -03:00
Jack Morgenstein
587443e777 IB/mlx4: Fix race condition between catas error reset and aliasguid flows
Code review revealed a race condition which could allow the catas error
flow to interrupt the alias guid query post mechanism at random points.
Thiis is fixed by doing cancel_delayed_work_sync() instead of
cancel_delayed_work() during the alias guid mechanism destroy flow.

Fixes: a0c64a17ab ("mlx4: Add alias_guid mechanism")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-17 21:40:39 -03:00
Linus Torvalds
a50243b1dd 5.1 Merge Window Pull Request
This has been a slightly more active cycle than normal with ongoing core
 changes and quite a lot of collected driver updates.
 
 - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
 
 - A new data transfer mode for HFI1 giving higher performance
 
 - Significant functional and bug fix update to the mlx5 On-Demand-Paging MR
   feature
 
 - A chip hang reset recovery system for hns
 
 - Change mm->pinned_vm to an atomic64
 
 - Update bnxt_re to support a new 57500 chip
 
 - A sane netlink 'rdma link add' method for creating rxe devices and fixing
   the various unregistration race conditions in rxe's unregister flow
 
 - Allow lookup up objects by an ID over netlink
 
 - Various reworking of the core to driver interface:
   * Drivers should not assume umem SGLs are in PAGE_SIZE chunks
   * ucontext is accessed via udata not other means
   * Start to make the core code responsible for object memory
     allocation
   * Drivers should convert struct device to struct ib_device
     via a helper
   * Drivers have more tools to avoid use after unregister problems
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a slightly more active cycle than normal with ongoing
  core changes and quite a lot of collected driver updates.

   - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe

   - A new data transfer mode for HFI1 giving higher performance

   - Significant functional and bug fix update to the mlx5
     On-Demand-Paging MR feature

   - A chip hang reset recovery system for hns

   - Change mm->pinned_vm to an atomic64

   - Update bnxt_re to support a new 57500 chip

   - A sane netlink 'rdma link add' method for creating rxe devices and
     fixing the various unregistration race conditions in rxe's
     unregister flow

   - Allow lookup up objects by an ID over netlink

   - Various reworking of the core to driver interface:
       - drivers should not assume umem SGLs are in PAGE_SIZE chunks
       - ucontext is accessed via udata not other means
       - start to make the core code responsible for object memory
         allocation
       - drivers should convert struct device to struct ib_device via a
         helper
       - drivers have more tools to avoid use after unregister problems"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits)
  net/mlx5: ODP support for XRC transport is not enabled by default in FW
  IB/hfi1: Close race condition on user context disable and close
  RDMA/umem: Revert broken 'off by one' fix
  RDMA/umem: minor bug fix in error handling path
  RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
  cxgb4: kfree mhp after the debug print
  IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
  IB/rdmavt: Fix loopback send with invalidate ordering
  IB/iser: Fix dma_nents type definition
  IB/mlx5: Set correct write permissions for implicit ODP MR
  bnxt_re: Clean cq for kernel consumers only
  RDMA/uverbs: Don't do double free of allocated PD
  RDMA: Handle ucontext allocations by IB/core
  RDMA/core: Fix a WARN() message
  bnxt_re: fix the regression due to changes in alloc_pbl
  IB/mlx4: Increase the timeout for CM cache
  IB/core: Abort page fault handler silently during owning process exit
  IB/mlx5: Validate correct PD before prefetch MR
  IB/mlx5: Protect against prefetch of invalid MR
  RDMA/uverbs: Store PR pointer before it is overwritten
  ...
2019-03-09 15:53:03 -08:00
Jakub Kicinski
f4b6bcc700 net: devlink: turn devlink into a built-in
Being able to build devlink as a module causes growing pains.
First all drivers had to add a meta dependency to make sure
they are not built in when devlink is built as a module.  Now
we are struggling to invoke ethtool compat code reliably.

Make devlink code built-in, users can still not build it at
all but the dynamically loadable module option is removed.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-26 08:49:05 -08:00
Leon Romanovsky
a2a074ef39 RDMA: Handle ucontext allocations by IB/core
Following the PD conversion patch, do the same for ucontext allocations.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-22 14:11:37 -07:00
Håkon Bugge
2612d723aa IB/mlx4: Increase the timeout for CM cache
Using CX-3 virtual functions, either from a bare-metal machine or
pass-through from a VM, MAD packets are proxied through the PF driver.

Since the VF drivers have separate name spaces for MAD Transaction Ids
(TIDs), the PF driver has to re-map the TIDs and keep the book keeping
in a cache.

Following the RDMA Connection Manager (CM) protocol, it is clear when
an entry has to evicted form the cache. But life is not perfect,
remote peers may die or be rebooted. Hence, it's a timeout to wipe out
a cache entry, when the PF driver assumes the remote peer has gone.

During workloads where a high number of QPs are destroyed concurrently,
excessive amount of CM DREQ retries has been observed

The problem can be demonstrated in a bare-metal environment, where two
nodes have instantiated 8 VFs each. This using dual ported HCAs, so we
have 16 vPorts per physical server.

64 processes are associated with each vPort and creates and destroys
one QP for each of the remote 64 processes. That is, 1024 QPs per
vPort, all in all 16K QPs. The QPs are created/destroyed using the
CM.

When tearing down these 16K QPs, excessive CM DREQ retries (and
duplicates) are observed. With some cat/paste/awk wizardry on the
infiniband_cm sysfs, we observe as sum of the 16 vPorts on one of the
nodes:

cm_rx_duplicates:
      dreq  2102
cm_rx_msgs:
      drep  1989
      dreq  6195
       rep  3968
       req  4224
       rtu  4224
cm_tx_msgs:
      drep  4093
      dreq 27568
       rep  4224
       req  3968
       rtu  3968
cm_tx_retries:
      dreq 23469

Note that the active/passive side is equally distributed between the
two nodes.

Enabling pr_debug in cm.c gives tons of:

[171778.814239] <mlx4_ib> mlx4_ib_multiplex_cm_handler: id{slave:
1,sl_cm_id: 0xd393089f} is NULL!

By increasing the CM_CLEANUP_CACHE_TIMEOUT from 5 to 30 seconds, the
tear-down phase of the application is reduced from approximately 90 to
50 seconds. Retries/duplicates are also significantly reduced:

cm_rx_duplicates:
      dreq  2460
[]
cm_tx_retries:
      dreq  3010
       req    47

Increasing the timeout further didn't help, as these duplicates and
retries stems from a too short CMA timeout, which was 20 (~4 seconds)
on the systems. By increasing the CMA timeout to 22 (~17 seconds), the
numbers fell down to about 10 for both of them.

Adjustment of the CMA timeout is not part of this commit.

Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-22 09:35:03 -07:00
Shamir Rabinovitch
8994445054 IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIs
Now when we have the udata passed to all the ib_xxx object creation APIs
and the additional macro 'rdma_udata_to_drv_context' to get the
ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally
start to remove the dependency of the drivers in the
ib_xxx->uobject->context.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 15:38:38 -07:00
Leon Romanovsky
21a428a019 RDMA: Handle PD allocations by IB/core
The PD allocations in IB/core allows us to simplify drivers and their
error flows in their .alloc_pd() paths. The changes in .alloc_pd() go hand
in had with relevant update in .dealloc_pd().

We will use this opportunity and convert .dealloc_pd() to don't fail, as
it was suggested a long time ago, failures are not happening as we have
never seen a WARN_ON print.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:51:04 -07:00
Jason Gunthorpe
6a8a2aa62d Linux 5.0-rc5
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Merge tag 'v5.0-rc5' into rdma.git for-next

Linux 5.0-rc5

Needed to merge the include/uapi changes so we have an up to date
single-tree for these files. Patches already posted are also expected to
need this for dependencies.
2019-02-04 14:53:42 -07:00
Leon Romanovsky
459cc69fa4 RDMA: Provide safe ib_alloc_device() function
All callers to ib_alloc_device() provide a larger size than struct
ib_device and rely on the fact that struct ib_device is embedded in their
driver specific structure as the first member.

Provide a safer variant of ib_alloc_device() that checks and enforces this
approach to make sure the drivers are using it right.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30 15:52:30 -07:00
Jack Morgenstein
f45f8edbe1 IB/mlx4: Fix using wrong function to destroy sqp AHs under SRIOV
The commit cited below replaced rdma_create_ah with
mlx4_ib_create_slave_ah when creating AHs for the paravirtualized special
QPs.

However, this change also required replacing rdma_destroy_ah with
mlx4_ib_destroy_ah in the affected flows.

The commit missed 3 places where rdma_destroy_ah should have been replaced
with mlx4_ib_destroy_ah.

As a result, the pd usecount was decremented when the ah was destroyed --
although the usecount was NOT incremented when the ah was created.

This caused the pd usecount to become negative, and resulted in the
WARN_ON stack trace below when the mlx4_ib.ko module was unloaded:

WARNING: CPU: 3 PID: 25303 at drivers/infiniband/core/verbs.c:329 ib_dealloc_pd+0x6d/0x80 [ib_core]
Modules linked in: rdma_ucm rdma_cm iw_cm ib_cm ib_umad mlx4_ib(-) ib_uverbs ib_core mlx4_en mlx4_core nfsv3 nfs fscache configfs xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ipt_REJECT nf_reject_ipv4 tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bridge stp llc dm_mirror dm_region_hash dm_log dm_mod dax rndis_wlan rndis_host coretemp kvm_intel cdc_ether kvm usbnet iTCO_wdt iTCO_vendor_support cfg80211 irqbypass lpc_ich ipmi_si i2c_i801 mii pcspkr i2c_core mfd_core ipmi_devintf i7core_edac ipmi_msghandler ioatdma pcc_cpufreq dca acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi mptsas scsi_transport_sas mptscsih crc32c_intel ata_piix bnx2 mptbase ipv6 crc_ccitt autofs4 [last unloaded: mlx4_core]
CPU: 3 PID: 25303 Comm: modprobe Tainted: G        W I       5.0.0-rc1-net-mlx4+ #1
Hardware name: IBM  -[7148ZV6]-/Node 1, System Card, BIOS -[MLE170CUS-1.70]- 09/23/2011
RIP: 0010:ib_dealloc_pd+0x6d/0x80 [ib_core]
Code: 00 00 85 c0 75 02 5b c3 80 3d aa 87 03 00 00 75 f5 48 c7 c7 88 d7 8f a0 31 c0 c6 05 98 87 03 00 01 e8 07 4c 79 e0 0f 0b 5b c3 <0f> 0b eb be 0f 0b eb ab 90 66 2e 0f 1f 84 00 00 00 00 00 66 66 66
RSP: 0018:ffffc90005347e30 EFLAGS: 00010282
RAX: 00000000ffffffea RBX: ffff8888589e9540 RCX: 0000000000000006
RDX: 0000000000000006 RSI: ffff88885d57ad40 RDI: 0000000000000000
RBP: ffff88885b029c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: ffff8887f06c0000
R13: ffff8887f06c13e8 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd6743c6740(0000) GS:ffff88887fcc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ed1038 CR3: 00000007e3156000 CR4: 00000000000006e0
Call Trace:
 mlx4_ib_close_sriov+0x125/0x180 [mlx4_ib]
 mlx4_ib_remove+0x57/0x1f0 [mlx4_ib]
 mlx4_remove_device+0x92/0xa0 [mlx4_core]
 mlx4_unregister_interface+0x39/0x90 [mlx4_core]
 mlx4_ib_cleanup+0xc/0xd7 [mlx4_ib]
 __x64_sys_delete_module+0x17d/0x290
 ? trace_hardirqs_off_thunk+0x1a/0x1c
 ? do_syscall_64+0x12/0x180
 do_syscall_64+0x4a/0x180
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 5e62d5ff1b ("IB/mlx4: Create slave AH's directly")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-21 14:20:08 -07:00
Parav Pandit
5474723115 RDMA: Introduce and use rdma_device_to_ibdev()
Introduce and use rdma_device_to_ibdev() API for those drivers which are
registering one sysfs group and also use in ib_core.

In subsequent patch, device->provider_ibdev one-to-one mapping is no
longer holds true during accessing sysfs entries.
Therefore, introduce an API rdma_device_to_ibdev() that provides such
information.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-14 13:12:03 -07:00
Parav Pandit
ea4baf7f11 RDMA: Rename port_callback to init_port
Most provider routines are callback routines which ib core invokes.
_callback suffix doesn't convey information about when such callback is
invoked. Therefore, rename port_callback to init_port.

Additionally, store the init_port function pointer in ib_device_ops, so
that it can be accessed in subsequent patches when binding rdma device to
net namespace.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-14 13:05:14 -07:00
Leon Romanovsky
0975890ebe RDMA: Clear CQ objects during their allocation
As part of an audit process to update drivers to use rdma_restrack_add()
ensure that CQ objects is cleared before access.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-10 17:08:52 -07:00
Jason Gunthorpe
b0ea0fa543 IB/{core,hw}: Have ib_umem_get extract the ib_ucontext from ib_udata
ib_umem_get() can only be called in a method callback, which always has a
udata parameter. This allows ib_umem_get() to derive the ucontext pointer
directly from the udata without requiring the drivers to find it in some
way or another.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
2019-01-10 17:07:45 -07:00
Shamir Rabinovitch
6fa8f1afd3 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 <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-10 17:06:44 -07:00
Linus Torvalds
5d24ae67a9 4.21 merge window pull request
This has been a fairly typical cycle, with the usual sorts of driver
 updates. Several series continue to come through which improve and
 modernize various parts of the core code, and we finally are starting to
 get the uAPI command interface cleaned up.
 
 - Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4, mlx5,
   qib, rxe, usnic
 
 - Rework the entire syscall flow for uverbs to be able to run over
   ioctl(). Finally getting past the historic bad choice to use write()
   for command execution
 
 - More functional coverage with the mlx5 'devx' user API
 
 - Start of the HFI1 series for 'TID RDMA'
 
 - SRQ support in the hns driver
 
 - Support for new IBTA defined 2x lane widths
 
 - A big series to consolidate all the driver function pointers into
   a big struct and have drivers provide a 'static const' version of the
   struct instead of open coding initialization
 
 - New 'advise_mr' uAPI to control device caching/loading of page tables
 
 - Support for inline data in SRPT
 
 - Modernize how umad uses the driver core and creates cdev's and sysfs
   files
 
 - First steps toward removing 'uobject' from the view of the drivers
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a fairly typical cycle, with the usual sorts of driver
  updates. Several series continue to come through which improve and
  modernize various parts of the core code, and we finally are starting
  to get the uAPI command interface cleaned up.

   - Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4,
     mlx5, qib, rxe, usnic

   - Rework the entire syscall flow for uverbs to be able to run over
     ioctl(). Finally getting past the historic bad choice to use
     write() for command execution

   - More functional coverage with the mlx5 'devx' user API

   - Start of the HFI1 series for 'TID RDMA'

   - SRQ support in the hns driver

   - Support for new IBTA defined 2x lane widths

   - A big series to consolidate all the driver function pointers into a
     big struct and have drivers provide a 'static const' version of the
     struct instead of open coding initialization

   - New 'advise_mr' uAPI to control device caching/loading of page
     tables

   - Support for inline data in SRPT

   - Modernize how umad uses the driver core and creates cdev's and
     sysfs files

   - First steps toward removing 'uobject' from the view of the drivers"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (193 commits)
  RDMA/srpt: Use kmem_cache_free() instead of kfree()
  RDMA/mlx5: Signedness bug in UVERBS_HANDLER()
  IB/uverbs: Signedness bug in UVERBS_HANDLER()
  IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported
  IB/umad: Start using dev_groups of class
  IB/umad: Use class_groups and let core create class file
  IB/umad: Refactor code to use cdev_device_add()
  IB/umad: Avoid destroying device while it is accessed
  IB/umad: Simplify and avoid dynamic allocation of class
  IB/mlx5: Fix wrong error unwind
  IB/mlx4: Remove set but not used variable 'pd'
  RDMA/iwcm: Don't copy past the end of dev_name() string
  IB/mlx5: Fix long EEH recover time with NVMe offloads
  IB/mlx5: Simplify netdev unbinding
  IB/core: Move query port to ioctl
  RDMA/nldev: Expose port_cap_flags2
  IB/core: uverbs copy to struct or zero helper
  IB/rxe: Reuse code which sets port state
  IB/rxe: Make counters thread safe
  IB/mlx5: Use the correct commands for UMEM and UCTX allocation
  ...
2018-12-28 14:57:10 -08:00
YueHaibing
e7c4d8e604 IB/mlx4: Remove set but not used variable 'pd'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/infiniband/hw/mlx4/qp.c: In function '_mlx4_ib_destroy_qp':
drivers/infiniband/hw/mlx4/qp.c:1612:22: warning:
 variable 'pd' set but not used [-Wunused-but-set-variable]

Fixes: e00b64f7c5 ("RDMA: Cleanup undesired pd->uobject usage")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-20 20:47:42 -07:00
Gal Pressman
2553ba217e RDMA: Mark if destroy address handle is in a sleepable context
Introduce a 'flags' field to destroy address handle callback and add a
flag that marks whether the callback is executed in an atomic context or
not.

This will allow drivers to wait for completion instead of polling for it
when it is allowed.

Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-19 16:28:03 -07:00