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.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

ECE parameters are exchanged through REQ->REP/SIDR_REP messages, this
patch adds the data to provide to other side of CMID communication
channel.

Link: https://lore.kernel.org/r/20200526103304.196371-5-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Extend REQ (request for communications), REP (reply to request for
communication), rejected reason and SIDR_REP (service ID resolution
response) structures with hardware vendor ID bits according to IBTA v1.4.

Link: https://lore.kernel.org/r/20200526103304.196371-2-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

From the mlx5-next branch at
  git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Required for dependencies in following patches

* branch 'mellanox/mlx5-next':
  net/mlx5: Add ability to read and write ECE options
  net/mlx5: Add support for RDMA TX FT headers modifying
  net/mlx5: Move iseg access helper routines close to mlx5_core driver
  net/mlx5: Cleanup mlx5_ifc_fte_match_set_misc2_bits
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The commit citied in the Fixes line wasn't complete and solved
only part of the problems. Update the mlx5_ib to properly support
MLX5_CMD_OP_INIT2INIT_QP command in the DEVX, that is required when
modify the QP tx_port_affinity.

Fixes: 819f7427 ("RDMA/mlx5: Add init2init as a modify command")
Link: https://lore.kernel.org/r/20200527135703.482501-1-leon@kernel.orgSigned-off-by: NMark Zhang <markz@mellanox.com>
Reviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Make use of the sizeof_field() helper instead of an open-coded version.

Link: https://lore.kernel.org/r/20200527144152.GA22605@embeddedorSigned-off-by: NGustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The end result of RDMA-CM ECE handshake is ECE options, which is
needed to be used while configuring data QPs. Such options can
come in any QP state, so add in/out fields to set and query
ECE options.

OUT fields:
* create_qp() - default ECE options for that type of QP.
* modify_qp() - enabled ECE options after QP state transition.

IN fields:
* create_qp() - create QP with this ECE option.
* modify_qp() - requested options. For unconnected QPs, the FW
will return an error if ECE is already configured with any options
that not equal to previously set.
Reviewed-by: NMark Zhang <markz@mellanox.com>
Reviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

can_sleep is always 0 when iboib_mcast_alloc() is called, so remove it and
use GFP_ATOMIC instead of GFP_KERNEL.

Link: https://lore.kernel.org/r/20200525130305.171509-1-kamalheib1@gmail.comSigned-off-by: NKamal Heib <kamalheib1@gmail.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Remove device specific debugfs entries immediately if LLD detaches a
particular ULD device in case of fatal PCI errors.

Link: https://lore.kernel.org/r/20200524190814.17599-1-bharat@chelsio.comSigned-off-by: NPotnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Instead of i with the sge number of wr will make the comparision more
clear, that is, when the sge number in wr is small than the maximum
supported sge number in the queue, then a stop sge needed to be filled at
the end of sges in wr.

Link: https://lore.kernel.org/r/1590152579-32364-5-git-send-email-liweihang@huawei.comSigned-off-by: NYixian Liu <liuyixian@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Set hns_roce_v2_cq_set_ci to inline type and remove unnecessary
next_cqe_sw_v2().

Link: https://lore.kernel.org/r/1590152579-32364-4-git-send-email-liweihang@huawei.comSigned-off-by: NLang Cheng <chenglang@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The redundant parameters "hr_dev" need to be removed from
free_kernel_wrid() and free_srq_wrid().

Link: https://lore.kernel.org/r/1590152579-32364-3-git-send-email-liweihang@huawei.comSigned-off-by: NWenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

There is no need to do a type cast on genernal pointers, they could be
assigned to any type of variables. In addition, optimize initialization of
some variables and adjust order of them.

Link: https://lore.kernel.org/r/1590152579-32364-2-git-send-email-liweihang@huawei.comSigned-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Currently, the MTR region is configed before hns_roce_mtr_map() is
invoked, but in some scenarios, the region is configed at MTR creation,
the caller need to store this config and call hns_roce_mtr_map() later. So
optimize the usage by wrapping the MTR region config into MTR.

Link: https://lore.kernel.org/r/1589982799-28728-10-git-send-email-liweihang@huawei.comSigned-off-by: NXi Wang <wangxi11@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Split the code related to WQE buffer configure from the QPC filling
process into two functions: config_qp_sq_buf() and config_qp_rq_buf(),
this will make the code more readable.

Link: https://lore.kernel.org/r/1589982799-28728-9-git-send-email-liweihang@huawei.comSigned-off-by: NXi Wang <wangxi11@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Number of sge/eqe is always non-negative, they should be defined in type
of unsigned.

Link: https://lore.kernel.org/r/1589982799-28728-8-git-send-email-liweihang@huawei.comSigned-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

page_shift is used to calculate the page size, it's always non-negative,
and should be in type of unsigned.

Link: https://lore.kernel.org/r/1589982799-28728-7-git-send-email-liweihang@huawei.comSigned-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Rename the function related to QP buffer to make the code more readable.

Link: https://lore.kernel.org/r/1589982799-28728-6-git-send-email-liweihang@huawei.comSigned-off-by: NXi Wang <wangxi11@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The codes related to assert are no longer used and need to be deleted.

Link: https://lore.kernel.org/r/1589982799-28728-5-git-send-email-liweihang@huawei.comSigned-off-by: NYangyang Li <liyangyang20@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Add unlikely() and likely() to optimize main I/O process code.

Link: https://lore.kernel.org/r/1589982799-28728-4-git-send-email-liweihang@huawei.comSigned-off-by: NLang Cheng <chenglang@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

It's easier to understand and maintain enable flags of cq using a single
field in type of u32 than defining a field for every flags in the
structure hns_roce_cq, and we can add new flags for features more
conveniently in the future.

Link: https://lore.kernel.org/r/1589982799-28728-3-git-send-email-liweihang@huawei.comSigned-off-by: NLang Cheng <chenglang@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The hardware can truncate PI/CI when posting or polling, the driver does
not need to do truncation. Therefore keep the software's PI/CI consistent
with it in the hardware.

Link: https://lore.kernel.org/r/1589982799-28728-2-git-send-email-liweihang@huawei.comSigned-off-by: NLang Cheng <chenglang@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The macros do_each_path/while_each_path lead to a smatch warning:

drivers/infiniband/ulp/rtrs/rtrs-clt.c:1196 rtrs_clt_failover_req() warn: inconsistent indenting
drivers/infiniband/ulp/rtrs/rtrs-clt.c:2890 rtrs_clt_request() warn: inconsistent indenting

Also checkpatch complains:
ERROR: Macros with multiple statements should be enclosed in a do - while loop

The macros are used only in two places: for a normal IO path and for the
failover path triggered after errors.

Get rid of the macros and just use a for loop iterating over the list of
paths in both places. It is easier to read and also less lines of code.

Fixes: 6a98d71d ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20200522053924.528980-1-danil.kipnis@cloud.ionos.comReported-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NDanil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The rtrs_sess structure has already been extracted above from the
rtrs_srv_sess structure. Use that to avoid redundant dereferencing.

Fixes: 9cb83748 ("RDMA/rtrs: server: main functionality")
Link: https://lore.kernel.org/r/20200522082833.1480551-1-haris.phnx@gmail.comSigned-off-by: NMd Haris Iqbal <haris.phnx@gmail.com>
Acked-by: NDanil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

module_is_live function is only defined when CONFIG_MODULES is enabled.
Use try_module_get instead to check whether the module is being removed.

When module unload and manuall unmapping is happening in parallel, we can
try removing the symlink twice: rnbd_client_exit
vs. rnbd_clt_unmap_dev_store.

This is probably not the best way to deal with this race in general, but
for now this fixes the compilation issue when CONFIG_MODULES is disabled
and has no functional impact. Regression tests passed.

Fixes: 1eb54f8f ("block/rnbd: client: sysfs interface functions")
Link: https://lore.kernel.org/r/20200521185909.457245-1-danil.kipnis@cloud.ionos.comReported-by: NRandy Dunlap <rdunlap@infradead.org>
Suggested-by: NGuoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: NDanil Kipnis <danil.kipnis@cloud.ionos.com>
Acked-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The allocated ports structure in never freed. The free function should be
called by release_cma_ports_group, but the group is never released since
we don't remove its default group.

Remove default groups when device group is deleted.

Fixes: 045959db ("IB/cma: Add configfs for rdma_cm")
Link: https://lore.kernel.org/r/20200521072650.567908-1-leon@kernel.orgSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The alloc_sess() function returns error pointers, it never returns NULL.

Fixes: f7a7a5c2 ("block/rnbd: client: main functionality")
Link: https://lore.kernel.org/r/20200519120347.GD42765@mwandaSigned-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: NJason 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.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason 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.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Refactor related objects to use their own asynchronous event FD.
The ufile event FD will be the default in case an object won't have its own
event FD.

Link: https://lore.kernel.org/r/20200519072711.257271-3-leon@kernel.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

While creating a uobject every create reaches a point where the uobject is
fully initialized. For ioctls that go on to copy_to_user this means they
need to open code the destruction of a fully created uobject - ie the
RDMA_REMOVE_DESTROY sort of flow.

Open coding this creates bugs, eg the CQ does not properly flush the
events list when it does its error unwind.

Provide a uverbs_finalize_uobj_create() function which indicates that the
uobject is fully initialized and that abort should call to destroy_hw to
destroy the uobj->object and related.

Methods can call this function if they go on to have error cases after
setting uobj->object. Once done those error cases can simply do return,
without an error unwind.

Link: https://lore.kernel.org/r/20200519072711.257271-2-leon@kernel.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Linux 5.7-rc6

Conflict in drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
resolved by deleting dr_cq_event, matching how netdev resolved it.

Required for dependencies in the following patches.
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

This patch hooks the transmit side of the datagram netdev with
ipoib by setting the rdma_netdev_get_params function for the
hfi1 ib_device_ops structue. It also enables the receiving side
by adding the AIP capability into the default capabilities.

Link: https://lore.kernel.org/r/20200511160712.173205.65700.stgit@awfm-01.aw.intel.comReviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NPiotr Stankiewicz <piotr.stankiewicz@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

This is the prerequisite modification to the ipoib ulp to allow a
rdma netdev to obtain the default ndo ops for init/uninit/open/close.

This is accomplished by setting the netdev ops field within the
callback function passed to the netdev allocation routine which
in turn was passed into the rdma netdev allocation routine.

This allows the rdma netdev to call back into the ulp to create the
resources required for connected mode operation.

Additionally as the ulp is not re-entrant, when switching modes,
the number of real tx queues is set to 1 for the connected mode.

For datagram mode the number of real tx queues is set to the
actual number of tx queues specified at the netdev's allocation.

For the internal ulp netdev the number of tx queues defaults to 1.

It is up to the rdma netdev to specify the actual number it can support.

When the driver does not support a rdma netdev for acceleration,
(-ENOTSUPPORTED return code or the verbs function for allocation is
NULL) the ipoib ulp functions are unaffected by using the internal
netdev allocated by the ipoib ulp.

Link: https://lore.kernel.org/r/20200511160706.173205.19086.stgit@awfm-01.aw.intel.comReviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NGary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>