Introduce a mechanism that performs an handshake between the userspace
provider and kernel driver which verifies that the user supports all
required features in order to operate correctly.
The handshake verifies the needed functionality by comparing the reported
device caps and the provider caps. If the device reports a non-zero
capability the appropriate comp mask is required from the userspace
provider in order to allocate the context.
Link: https://lore.kernel.org/r/20200722140312.3651-4-galpress@amazon.com
Reviewed-by: Shadi Ammouri <sammouri@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The device reports the minimum SQ size required for creation.
This patch queries the min SQ size and reports it back to the userspace
library.
Link: https://lore.kernel.org/r/20200722140312.3651-3-galpress@amazon.com
Reviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Shadi Ammouri <sammouri@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The device reports the maximum number of bytes to be written before
ringing the doorbell (zero means unlimited).
This patch queries the max batch size and reports it back to the userspace
library.
Link: https://lore.kernel.org/r/20200722140312.3651-2-galpress@amazon.com
Reviewed-by: Daniel Kranzdorf <dkkranzd@amazon.com>
Reviewed-by: Firas JahJah <firasj@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Nnothing uses the enum name, so this is harmless.
Fixes: 3226944124 ("IB/mlx5: Introduce driver create and destroy flow methods")
Link: https://lore.kernel.org/r/20200724084112.GC31930@amd
Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Change the repeated word "it" in a comment to "it to".
Also insert a dash in the sentence to add clarity.
Link: https://lore.kernel.org/r/20200719003220.21250-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
User space should receive the maximum edpm size from kernel driver,
similar to other edpm/ldpm related limits. Add an additional parameter to
the alloc_ucontext_resp structure for the edpm maximum size.
In addition, pass an indication from user-space to kernel
(and not just kernel to user) that the DPM sizes are supported.
This is for supporting backward-forward compatibility between driver and
lib for everything related to DPM transaction and limit sizes.
This should have been part of commit mentioned in Fixes tag.
Link: https://lore.kernel.org/r/20200707063100.3811-3-michal.kalderon@marvell.com
Fixes: 93a3d05f9d ("RDMA/qedr: Add kernel capability flags for dpm enabled mode")
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
In older FW versions the completion flag was treated as the ack flag in
edpm messages. commit ff937b916e ("qed: Add EDPM mode type for user-fw
compatibility") exposed the FW option of setting which mode the QP is in
by adding a flag to the qedr <-> qed API.
This patch adds the qedr <-> libqedr interface so that the libqedr can set
the flag appropriately and qedr can pass it down to FW. Flag is added for
backward compatibility with libqedr.
For older libs, this flag didn't exist and therefore set to zero.
Fixes: ac1b36e55a ("qedr: Add support for user context verbs")
Link: https://lore.kernel.org/r/20200707063100.3811-2-michal.kalderon@marvell.com
Signed-off-by: Yuval Bason <yuval.bason@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
With the "PID" category QPs have same PID will be bound to same counter;
If this category is not set then QPs have different PIDs will be bound
to same counter.
This is implemented for 2 reasons:
1. The counter is a limited resource, while there may be dozens of
applications, each of which creates several types of QPs, which means
it may doesn't have enough counter.
2. The system administrator needs all QPs created by all applications
with same type bound to one counter.
The counter name and PID is only make sense when "PID" category are
configured.
This category can also be used in combine with others, e.g. QP type.
Link: https://lore.kernel.org/r/20200702082933.424537-2-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Expose UAPI to query MR, this will let user space application that
didn't allocate the MR but has access to by owning the matching command
FD to retrieve its information.
Link: https://lore.kernel.org/r/20200630093916.332097-8-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Introduce UAPI to query PD attributes, this can be used to retrieve PD
attributes by having the PD handle of the created one and owning the
command FD for the ucontxet.
Link: https://lore.kernel.org/r/20200630093916.332097-7-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Implement the query ucontext functionality by returning the original
ucontext data as part of an extra mlx5 attribute that holds the driver
UAPI response.
Link: https://lore.kernel.org/r/20200630093916.332097-6-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Expose UAPI to query ucontext, this will let user space application that
didn't allocate the ucontext but has access to by owning the matching
command FD to retrieve the ucontext information.
Link: https://lore.kernel.org/r/20200630093916.332097-4-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add support to get resource dump in raw format. It enable drivers to
return the entire device specific QP/CQ/MR context without a need from the
driver to set each field separately.
The raw query returns only the device specific data, general data is still
returned by using the existing queries.
Example:
$ rdma res show mr dev mlx5_1 mrn 2 -r -j
[{"ifindex":7,"ifname":"mlx5_1",
"data":[0,4,255,254,0,0,0,0,0,0,0,0,16,28,0,216,...]}]
Link: https://lore.kernel.org/r/20200623113043.1228482-9-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
A few large, long discussed works this time. The RNBD block driver has
been posted for nearly two years now, and the removal of FMR has been a
recurring discussion theme for a long time. The usual smattering of
features and bug fixes.
- Various small driver bugs fixes in rxe, mlx5, hfi1, and efa
- Continuing driver cleanups in bnxt_re, hns
- Big cleanup of mlx5 QP creation flows
- More consistent use of src port and flow label when LAG is used and a
mlx5 implementation
- Additional set of cleanups for IB CM
- 'RNBD' network block driver and target. This is a network block RDMA
device specific to ionos's cloud environment. It brings strong multipath
and resiliency capabilities.
- Accelerated IPoIB for HFI1
- QP/WQ/SRQ ioctl migration for uverbs, and support for multiple async fds
- Support for exchanging the new IBTA defiend ECE data during RDMA CM
exchanges
- Removal of the very old and insecure FMR interface from all ULPs and
drivers. FRWR should be preferred for at least a decade now.
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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 more active cycle than most of the recent past, with a few large,
long discussed works this time.
The RNBD block driver has been posted for nearly two years now, and
flowing through RDMA due to it also introducing a new ULP.
The removal of FMR has been a recurring discussion theme for a long
time.
And the usual smattering of features and bug fixes.
Summary:
- Various small driver bugs fixes in rxe, mlx5, hfi1, and efa
- Continuing driver cleanups in bnxt_re, hns
- Big cleanup of mlx5 QP creation flows
- More consistent use of src port and flow label when LAG is used and
a mlx5 implementation
- Additional set of cleanups for IB CM
- 'RNBD' network block driver and target. This is a network block
RDMA device specific to ionos's cloud environment. It brings strong
multipath and resiliency capabilities.
- Accelerated IPoIB for HFI1
- QP/WQ/SRQ ioctl migration for uverbs, and support for multiple
async fds
- Support for exchanging the new IBTA defiend ECE data during RDMA CM
exchanges
- Removal of the very old and insecure FMR interface from all ULPs
and drivers. FRWR should be preferred for at least a decade now"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (247 commits)
RDMA/cm: Spurious WARNING triggered in cm_destroy_id()
RDMA/mlx5: Return ECE DC support
RDMA/mlx5: Don't rely on FW to set zeros in ECE response
RDMA/mlx5: Return an error if copy_to_user fails
IB/hfi1: Use free_netdev() in hfi1_netdev_free()
RDMA/hns: Uninitialized variable in modify_qp_init_to_rtr()
RDMA/core: Move and rename trace_cm_id_create()
IB/hfi1: Fix hfi1_netdev_rx_init() error handling
RDMA: Remove 'max_map_per_fmr'
RDMA: Remove 'max_fmr'
RDMA/core: Remove FMR device ops
RDMA/rdmavt: Remove FMR memory registration
RDMA/mthca: Remove FMR support for memory registration
RDMA/mlx4: Remove FMR support for memory registration
RDMA/i40iw: Remove FMR leftovers
RDMA/bnxt_re: Remove FMR leftovers
RDMA/mlx5: Remove FMR leftovers
RDMA/core: Remove FMR pool API
RDMA/rds: Remove FMR support for memory registration
RDMA/srp: Remove support for FMR memory registration
...
After users sets the ECE option, FW will return the agreed/supported bits
through an output structures of modify QP stages for regular QPs or
through create QP for the DCT.
Link: https://lore.kernel.org/r/20200526115440.205922-9-leon@kernel.org
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The most common way to set ECE option will be during modify QP command in
INIT2RTR, RTR2RTS and RTS2RTS stages, so update mlx5 to support it.
The new bit in the comp_mask is needed to mark that kernel supports ECE
and can receive data instead of "reserved" field in the struct
mlx5_ib_modify_qp.
Link: https://lore.kernel.org/r/20200526115440.205922-8-leon@kernel.org
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Allow users to ask creation of QPs with specific ECE options. Such early
set even before RDMA-CM connection is established is useful if user knows
exactly which option he needs.
Link: https://lore.kernel.org/r/20200526115440.205922-4-leon@kernel.org
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Supported ECE options are returned from FW in the create_qp phase and zero
means that field is not valid. Such default value allows us to reuse
reserved field without worries about comp_mask.
Update create QP API to return ECE options.
Link: https://lore.kernel.org/r/20200526115440.205922-3-leon@kernel.org
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
IBTA declares "vendor option not supported" reject reason in REJ messages
if passive side doesn't want to accept proposed ECE options.
Due to the fact that ECE is managed by userspace, there is a need to let
users to provide such rejected reason.
Link: https://lore.kernel.org/r/20200526103304.196371-7-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The rdma_accept() is called by both passive and active sides of CMID
connection to mark readiness to start data transfer. For passive side,
this is called explicitly, for active side, it is called implicitly while
receiving REP message.
Provide ECE data to rdma_accept function needed for passive side to send
that REP message.
Link: https://lore.kernel.org/r/20200526103304.196371-6-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Passive side of CMID connection receives ECE request through REQ message
and needs to respond with relevant REP message which will be forwarded to
active side.
The UCMA events interface is responsible for such communication with the
user space (librdmacm). Extend it to provide ECE wire data.
Link: https://lore.kernel.org/r/20200526103304.196371-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Active side of CMID initiates connection through librdmacm's
rdma_connect() and kernel's ucma_connect(). Extend UCMA interface to
handle those new parameters.
Link: https://lore.kernel.org/r/20200526103304.196371-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce create/destroy QP commands over the ioctl interface to let it
be extended to get an asynchronous event FD.
Link: https://lore.kernel.org/r/20200519072711.257271-8-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce create/destroy WQ commands over the ioctl interface to let it
be extended to get an asynchronous event FD.
Link: https://lore.kernel.org/r/20200519072711.257271-7-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce create/destroy SRQ commands over the ioctl interface to let it
be extended to get an asynchronous event FD.
Link: https://lore.kernel.org/r/20200519072711.257271-6-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
These constants are going to be used in the ioctl interface in coming
patches so they are part of the UAPI, place them in the correct header
for clarity.
Link: https://lore.kernel.org/r/20200519072711.257271-5-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Extend CQ to get its own asynchronous event FD.
The event FD is an optional attribute, in case wasn't given the ufile
event FD will be used.
Link: https://lore.kernel.org/r/20200519072711.257271-4-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The accelerated IP capability bit is added to allow users to control
which feature is enabled and disabled.
Link: https://lore.kernel.org/r/20200511160541.173205.96870.stgit@awfm-01.aw.intel.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
When drop action is used the matching packet will stop processing in
steering and will be dropped. This functionality will allow users to drop
matching packets.
Link: https://lore.kernel.org/r/20200504054227.271486-1-leon@kernel.org
Signed-off-by: Daria Velikovsky <daria@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
User can configure default miss rule in order to skip matching in the user
domain and forward the packet to the kernel steering domain. When user
requests a default miss rule, we add steering rule to forward the traffic
to the next namespace.
Link: https://lore.kernel.org/r/20200504053012.270689-5-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The librdmacm uses node_guid as identifier to correlate between IB devices
and CMA devices. However FW resets cause to such "connection" to be lost
and require from the user to restart its application.
Extend UCMA to return IB device index, which is stable identifier.
Link: https://lore.kernel.org/r/20200504132541.355710-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Several references got broken due to txt to ReST conversion.
Several of them can be automatically fixed with:
scripts/documentation-file-ref-check --fix
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> # hwtracing/coresight/Kconfig
Reviewed-by: Paul E. McKenney <paulmck@kernel.org> # memory-barrier.txt
Acked-by: Alex Shi <alex.shi@linux.alibaba.com> # translations/zh_CN
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it> # translations/it_IT
Acked-by: Marc Zyngier <maz@kernel.org> # kvm/arm64
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6f919ddb83a33b5f2a63b6b5f0575737bb2b36aa.1586881715.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Leon Romanovsky says:
====================
Those two patches from Michael extends mlx5_core and mlx5_ib flow steering
to support RDMA TX in similar way to already supported RDMA RX.
====================
Based on the mlx5-next branch at
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Due to dependencies
* branch 'mlx5_tx_steering':
RDMA/mlx5: Add support for RDMA TX flow table
net/mlx5: Add support for RDMA TX steering
Enable user application to add rules for RDMA TX steering table.
Rules in this steering table will allow to steer transmitted RDMA
traffic.
Link: https://lore.kernel.org/r/20200324061425.1570190-3-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Move to fully dynamic UAR mode once user space supports it. In this case
we prevent any legacy mode of UARs on the allocated context and prevent
redundant allocation of the static ones.
Link: https://lore.kernel.org/r/20200324060143.1569116-6-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Extend QP creation to get uar page index from user space, this mode can be
used with the UAR dynamic mode APIs to allocate/destroy a UAR object.
As part of enabling this option blocked the weird/un-supported cross
channel option which uses index 0 hard-coded.
This QP flag wasn't exposed to user space as part of any formal upstream
release, the dynamic option can allow having valid UAR page index instead.
Link: https://lore.kernel.org/r/20200324060143.1569116-4-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Extend CQ creation to get uar page index from user space, this mode can be
used with the UAR dynamic mode APIs to allocate/destroy a UAR object.
Link: https://lore.kernel.org/r/20200324060143.1569116-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Expose UAR object and its alloc/destroy commands to be used over the ioctl
interface by user space applications.
This API supports both BF & NC modes and enables a dynamic allocation of
UARs once really needed.
As the number of driver objects were limited by the core ones when the
merged tree is prepared, had to decrease the number of core objects to
enable the new UAR object usage.
Link: https://lore.kernel.org/r/20200324060143.1569116-2-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce packet pacing uobject and its alloc and destroy
methods.
This uobject holds mlx5 packet pacing context according to the device
specification and enables managing packet pacing device entries that are
needed by DEVX applications.
Link: https://lore.kernel.org/r/20200219190518.200912-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Add the core support field to METHOD_GET_CONTEXT, this field should
represent capabilities that are not device-specific.
Return support for optional access flags for memory regions. User-space
will use this capability to mask the optional access flags for
unsupporting kernels.
Link: https://lore.kernel.org/r/1578506740-22188-10-git-send-email-yishaih@mellanox.com
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Add a new relaxed ordering access flag for memory regions. Using memory
regions with relaxed ordeing set can enhance performance.
This access flag is handled in a best-effort manner, drivers should ignore
if they don't support setting relaxed ordering.
Link: https://lore.kernel.org/r/1578506740-22188-9-git-send-email-yishaih@mellanox.com
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Define a range of access flags that are defined to be optional, both
uverbs and drivers should enable getting them and use if they are
applicable
This will be used, for example, for the relaxed ordering access flag which
unsupporting drivers can ignore.
Link: https://lore.kernel.org/r/1578506740-22188-7-git-send-email-yishaih@mellanox.com
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Allow future extensions of the get context command through the uverbs
ioctl kabi.
Unlike the uverbs version this does not return an async_fd as well, that
has to be done with another command.
Link: https://lore.kernel.org/r/1578506740-22188-5-git-send-email-yishaih@mellanox.com
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Allow the async FD to be allocated separately from the context.
This is necessary to introduce the ioctl to create a context, as an ioctl
should only ever create a single uobject at a time.
If multiple async FDs are created then the first one is used to deliver
affiliated events from any ib_uevent_object, with all subsequent ones will
receive only unaffiliated events.
Link: https://lore.kernel.org/r/1578506740-22188-3-git-send-email-yishaih@mellanox.com
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This makes async events aligned with completion events as both are full
uobjects of FD type and use the same uobject lifecycle.
A bunch of duplicate code is consolidated and the general flow between the
two FDs is now very similar.
Link: https://lore.kernel.org/r/1578504126-9400-14-git-send-email-yishaih@mellanox.com
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Introduce VAR object and its alloc/destroy KABI methods. The internal
implementation uses the IB core API to manage mmap/munamp calls.
Link: https://lore.kernel.org/r/20191212110928.334995-5-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
HW/FW support two types of latency enhancement features. Until now
user-space implemented only edpm (enhanced dpm). We add kernel capability
flags to differentiate between current FW in kernel that supports both
ldpm and edpm. Since edpm is not yet supported for iWARP we add different
flags for iWARP + RoCE. We also fix bad practice of defining sizes in
rdma-core and pass initialization to kernel, for forward compatibility.
The capability flags are added for backward-forward compatibility between
kernel and rdma-core for qedr.
Before this change there was a field called dpm_enabled which could hold
either 0 or 1 value, this indicated whether RoCE edpm was enabled or
not. We modified this field to be dpm_flags, and bit 1 still holds the
same meaning of RoCE edpm being enabled or not.
Link: https://lore.kernel.org/r/20191121112957.25162-1-michal.kalderon@marvell.com
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Query the device attributes for RDMA operations, including maximum
transfer size and maximum number of SGEs per RDMA WR, and report them
back to the userspace library.
Link: https://lore.kernel.org/r/20191121141509.59297-4-galpress@amazon.com
Signed-off-by: Daniel Kranzdorf <dkkranzd@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Add support for flow steering counters action with a non-base counter
ID (offset) for bulk counters.
When creating a flow counter object, save the bulk value. This value is
used when a flow action with a non-base counter ID is requested - to
validate that the required offset is in the range of the allocated bulk.
Link: https://lore.kernel.org/r/20191103140723.77411-1-leon@kernel.org
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Use the doorbell recovery mechanism to register rdma related doorbells
that will be restored in case there is a doorbell overflow attention.
Link: https://lore.kernel.org/r/20191030094417.16866-8-michal.kalderon@marvell.com
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
