Commit Graph

10019 Commits

Author SHA1 Message Date
David S. Miller
6b0a7f84ea Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflict resolution of af_smc.c from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-17 11:26:25 -07:00
Colin Ian King
a6d2a5a92e RDMA/cxgb4: Fix null pointer dereference on alloc_skb failure
Currently if alloc_skb fails to allocate the skb a null skb is passed to
t4_set_arp_err_handler and this ends up dereferencing the null skb.  Avoid
the NULL pointer dereference by checking for a NULL skb and returning
early.

Addresses-Coverity: ("Dereference null return")
Fixes: b38a0ad8ec ("RDMA/cxgb4: Set arp error handler for PASS_ACCEPT_RPL messages")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-16 08:03:17 -03:00
Josh Collier
7c39f7f671 IB/rdmavt: Fix frwr memory registration
Current implementation was not properly handling frwr memory
registrations. This was uncovered by commit 27f26cec761das ("xprtrdma:
Plant XID in on-the-wire RDMA offset (FRWR)") in which xprtrdma, which is
used for NFS over RDMA, started failing as it was the first ULP to modify
the ib_mr iova resulting in the NFS server getting REMOTE ACCESS ERROR
when attempting to perform RDMA Writes to the client.

The fix is to properly capture the true iova, offset, and length in the
call to ib_map_mr_sg, and then update the iova when processing the
IB_WR_REG_MEM on the send queue.

Fixes: a41081aa59 ("IB/rdmavt: Add support for ib_map_mr_sg")
Cc: stable@vger.kernel.org
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Josh Collier <josh.d.collier@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-16 07:11:29 -03:00
Colin Ian King
1db86318c4 RDMA/mlx5: Check for error return in flow_rule rather than err
Currently when the call to create_flow_rule_vport_sq fails, the error
check is being performed on err rather than on the return pointer
flow_rule.  The return flow_rule maybe NULL (which is not considered an
error) or an error code, so check for the error on flow_rule.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: d5ed8ac34c ("RDMA/mlx5: Move default representors SQ steering to rule to modify QP")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-12 11:19:49 -03:00
Devesh Sharma
1c00d7bc96 RDMA/ocrdma: Remove use of idr use pci bdf instead
Removing the use of IDR variable just to name the function ids. Using the
PCI_FUNC(pdev->devfn) instead to create the device name, associated
resources and to print driver into at various places.

Reported-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-12 10:59:02 -03:00
Kaike Wan
d737b25b1a IB/hfi1: Do not flush send queue in the TID RDMA second leg
When a QP is put into error state, the send queue will be flushed.
This mechanism is implemented in both the first and the second leg
of the send engine. Since the second leg is only responsible for
data transactions in the KDETH space for the TID RDMA WRITE request,
it should not perform the flushing of the send queue.

This patch removes the flushing function of the second leg, but
still keeps the bailing out of the QP if it is put into error state.

Fixes: 70dcb2e3dc ("IB/hfi1: Add the TID second leg send packet builder")
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>
2019-04-10 15:09:30 -03:00
Mark Bloch
fb652d3299 RDMA/mlx5: Remove VF representor profile
Now that we have a single IB device with multiple ports we can remove the
VF representor profile.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:40 -03:00
Mark Bloch
26628e2d58 RDMA/mlx5: Move to single device multiport ports in switchdev mode
Move from IB device (representor) per virtual function to single IB device
with port per virtual function (port 1 represents the uplink). As number
of ports is a static property of an IB device, declare the IB device with
as many port as the possible according to the PCI bus.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
a989ea01cb RDMA/mlx5: Move SMI caps logic
We store the SMI information in the core device's struct, make sure we set
that information only once (and not per port), while here make the for
loop based on the actual size of the array.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
35b0aa67b2 RDMA/mlx5: Refactor netdev affinity code
The design of representors is such that once an IB representor is created,
the netdev of representor already exists, we can use that fact to simplify
the netdev affinity code.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
d5ed8ac34c RDMA/mlx5: Move default representors SQ steering to rule to modify QP
Currently the steering for SQs created on representors is done on
creation, once we move to representors as ports of an IB device we need
the port argument which is given only at the modify QP stage, adjust the
code appropriately.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
6a4d00be08 RDMA/mlx5: Move rep into port struct
In preparation of moving into a model of single IB device multiple ports
move rep to be part of the port structure. We mark a representor device by
setting is_rep, no functional change with this patch.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
5d8f6a0e92 RDMA/mlx5: Use correct size for device resources
On allocation we use the array size and on destruction num_ports, use the
array size of destruction as well, in this context the array corresponds
to the native/actual ports on the NIC so no need to adjust this logic for
representors.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
da796ccb3e RDMA/mlx5: Move ports allocation to outside of INIT stage
In downstream patches we will need access to the ports before doing any
stages, in order to set net device per representor.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
4a6dc8552a RDMA/mlx5: Free IB device on remove
Simplify the code and move the deallocation of the IB device into the
remove function.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Mark Bloch
95579e785a RDMA/mlx5: Move netdev info into the port struct
Netdev info is stored in a separate array and holds data relevant on a per
port basis, move it to be part of the port struct.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 15:05:39 -03:00
Jason Gunthorpe
5331fa0db7 Merge branch 'mlx5-next' into rdma.git for-next
From
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Required for dependencies on the next series

* branch 'mlx5-next':
  net/mlx5: E-Switch, add a new prio to be used by the RDMA side
  net/mlx5: E-Switch, don't use hardcoded values for FDB prios
  net/mlx5: Fix false compilation warning
  net/mlx5: Expose MPEIN (Management PCIE INfo) register layout
  net/mlx5: Add rate limit print macros
  net/mlx5: Add explicit bar address field
  net/mlx5: Replace dev_err/warn/info by mlx5_core_err/warn/info
  net/mlx5: Use dev->priv.name instead of dev_name
  net/mlx5: Make mlx5_core messages independent from mdev->pdev
  net/mlx5: Break load_one into three stages
  net/mlx5: Function setup/teardown procedures
  net/mlx5: Move health and page alloc init to mdev_init
  net/mlx5: Split mdev init and pci init
  net/mlx5: Remove redundant init functions parameter
  net/mlx5: Remove spinlock support from mlx5_write64
  net/mlx5: Remove unused MLX5_*_DOORBELL_LOCK macros

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-10 14:59:27 -03:00
Steve Wise
ab7efbe24b RDMA/cxgb4: Use ib_device_set_netdev()
cxgb4 has a simple non-dynamic use of get_netdev, so conversion is
straightforward.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-09 10:14:54 -03:00
Jason Gunthorpe
4b38da75e0 RDMA/drivers: Convert easy drivers to use ib_device_set_netdev()
Drivers that never change their ndev dynamically do not need to use
the get_netdev callback.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Acked-by: Adit Ranadive <aditr@vmware.com>
2019-04-09 10:14:54 -03:00
David Ahern
1550c17193 ipv4: Prepare rtable for IPv6 gateway
To allow the gateway to be either an IPv4 or IPv6 address, remove
rt_uses_gateway from rtable and replace with rt_gw_family. If
rt_gw_family is set it implies rt_uses_gateway. Rename rt_gateway
to rt_gw4 to represent the IPv4 version.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-08 15:22:40 -07:00
Yangyang Li
00fb67ec6b RDMA/hns: Bugfix for SCC hem free
The method of hem free for SCC context is different from qp context.

In the current version, if free SCC hem during the execution of qp free,
there may be smmu error as below:

 arm-smmu-v3 arm-smmu-v3.1.auto: event 0x10 received:
 arm-smmu-v3 arm-smmu-v3.1.auto:  0x00007d0000000010
 arm-smmu-v3 arm-smmu-v3.1.auto:  0x000012000000017c
 arm-smmu-v3 arm-smmu-v3.1.auto:  0x00000000000009e0
 arm-smmu-v3 arm-smmu-v3.1.auto:  0x0000000000000000

As SCC context is still used by hardware after qp free, we can solve this
problem by removing SCC hem free from hns_roce_qp_free.

Fixes: 6a157f7d1b ("RDMA/hns: Add SCC context allocation support for hip08")
Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:42:16 -03:00
Lijun Ou
4772e03d23 RDMA/hns: Fix bug that caused srq creation to fail
Due to the incorrect use of the seg and obj information, the position of
the mtt is calculated incorrectly, and the free space of the page is not
enough to store the entire mtt, resulting in access to the next page. This
patch fixes this problem.

 Unable to handle kernel paging request at virtual address ffff00006e3cd000
 ...
 Call trace:
  hns_roce_write_mtt+0x154/0x2f0 [hns_roce]
  hns_roce_buf_write_mtt+0xa8/0xd8 [hns_roce]
  hns_roce_create_srq+0x74c/0x808 [hns_roce]
  ib_create_srq+0x28/0xc8

Fixes: 0203b14c4f ("RDMA/hns: Unify the calculation for hem index in hip08")
Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:27:58 -03:00
chenglang
2b277dae06 RDMA/hns: Support to create 1M srq queue
In mhop 0 mode, 64*bt_num queues can be supported.
In mhop 1 mode, 32K*bt_num queues can be supported.
Config srqc_hop_num to 1 to support 1M SRQ queues.

Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:26:44 -03:00
Shiraz Saleem
d0b5c01bb4 RDMA/umem: Use correct value for SG entries in sg_copy_to_buffer()
With page combining, the assumption that number of SG entries in umem SGL
equal to number of system pages in umem no longer holds.

umem->sg_nents tracks the SG entries in umem SGL. Use it in
sg_pcopy_to_buffer() as opposed to ib_umem_num_pages(umem).

Fixes: d10bcf947a ("RDMA/umem: Combine contiguous PAGE_SIZE regions in SGEs")
Reported-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Lijun Ou
e1c9a0dc29 RDMA/hns: Dump detailed driver-specific CQ
This patch adds support of resource track for hip08 and take dumping cq
context state used for debugging as an example.  More resources track
supports for hns driver will be added in future.

The output should be as follows.
$ rdma res show cq dev hnseth0 -d
dev hnseth0 cqe 1023 users 2 poll-ctx WORKQUEUE pid 0 comm [ib_core] drv_state 2 drv_ceq
n 0 drv_cqn 0 drv_hopnum 1 drv_pi 0 drv_ci 0 drv_coalesce 0 drv_period 0 drv_cnt 0

Signed-off-by: Tao Tian <tiantao6@huawei.com>
Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -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
Jason Gunthorpe
feec576a6a IB: When attrs.udata/ufile is available use that instead of uobject
The ucontext and ufile should not be accessed via the uobject, all these
cases have an attrs so use that instead.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Jason Gunthorpe
e79c9c6062 IB/mlx5: Remove references to uboject->context
These should all go through udata now. Add mlx5_udata_to_mdev to convert
a udata into the struct mlx5_ib_dev as these call sites require.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Leon Romanovsky
9e886b39a7 RDMA/nldev: Return device protocol
Add new RDMA_NLDEV_ATTR_DEV_PROTOCOL attribute to give ability for UDEV
rules create IB device stable names based on link type protocol.  The
assumption that devices like mlx4 with duality in their link type under
one IB device struct won't be allowed in the future.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:25 -03:00
Leon Romanovsky
c87e65cfb9 RDMA/cm: Move debug counters to be under relevant IB device
The sysfs layout is created by CM incorrectly presented RDMA devices with
InfiniBand link layer. Layout of such devices represents device tree of
connections. By moving CM statistics to be under relevant port of IB
device, we will fix the following issues:

 * Symlink name - It used device name instead of specific identifier.
 * Target location - It was supposed to point to PCI-ID/infiniband_cm/
   instead of PCI-ID/infiniband/
 * Target name - It created extra device file under already existing
   device folder, e.g. mlx5_0/mlx5_0
 * Crash during boot with RDMA persistent naming patches.

 sysfs: cannot create duplicate filename '/class/infiniband_cm/mlx5_0'
 CPU: 29 PID: 433 Comm: modprobe Not tainted 5.0.0-rc5+ #178
 Call Trace:
  dump_stack+0xcc/0x180
  sysfs_warn_dup.cold.3+0x17/0x2d
  sysfs_do_create_link_sd.isra.2+0xd0/0xf0
  device_add+0x7cb/0x1450
  device_create_groups_vargs+0x1ae/0x220
  device_create+0x93/0xc0
  cm_add_one+0x38f/0xf60 [ib_cm]
  add_client_context+0x167/0x210 [ib_core]
  enable_device_and_get+0x230/0x3f0 [ib_core]
  ib_register_device+0x823/0xbf0 [ib_core]
  __mlx5_ib_add+0x45/0x150 [mlx5_ib]
  mlx5_ib_add+0x1b3/0x5e0 [mlx5_ib]
  mlx5_add_device+0x130/0x3a0 [mlx5_core]
  mlx5_register_interface+0x1a9/0x270 [mlx5_core]
  do_one_initcall+0x14f/0x5de
  do_init_module+0x247/0x7c0
  load_module+0x4c2f/0x60d0
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

After this change:
[leonro@server ~]$ ls -al /sys/class/infiniband/ibp0s12f0/ports/1/
drwxr-xr-x  2 root root    0 Mar 11 11:17 cm_rx_duplicates
drwxr-xr-x  2 root root    0 Mar 11 11:17 cm_rx_msgs
drwxr-xr-x  2 root root    0 Mar 11 11:17 cm_tx_msgs
drwxr-xr-x  2 root root    0 Mar 11 11:17 cm_tx_retries

Fixes: 110cf374a8 ("infiniband: make cm_device use a struct device and not a kobject.")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:24 -03:00
Colin Ian King
4d2e11d42f opa_vnic: fix check on record->event, incorrect operator used
The check on record->event is always true because the wrong operator
is being used, used && instead of ||

Addresses-Coverity: ("Constant expression result")
Fixes: fae7a699a9 ("opa_vnic: Convert vport_idr to XArray")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:24 -03:00
Shiraz Saleem
d10bcf947a RDMA/umem: Combine contiguous PAGE_SIZE regions in SGEs
Combine contiguous regions of PAGE_SIZE pages into single scatter list
entry while building the scatter table for a umem. This minimizes the
number of the entries in the scatter list and reduces the DMA mapping
overhead, particularly with the IOMMU.

Set default max_seg_size in core for IB devices to 2G and do not combine
if we exceed this limit.

Also, purge npages in struct ib_umem as we now DMA map the umem SGL with
sg_nents and npage computation is not needed. Drivers should now be using
ib_umem_num_pages(), so fix the last stragglers.

Move npages tracking to ib_umem_odp as ODP drivers still need it.

Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Tested-by: Gal Pressman <galpress@amazon.com>
Tested-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:05:24 -03:00
Kamal Heib
ea7a5c706f RDMA/vmw_pvrdma: Fix memory leak on pvrdma_pci_remove
Make sure to free the DSR on pvrdma_pci_remove() to avoid the memory leak.

Fixes: 29c8d9eba5 ("IB: Add vmw_pvrdma driver")
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08 13:04:46 -03:00
Will Deacon
1b8546d7e2 i40iw: Redefine i40iw_mmiowb() to do nothing
mmiowb() is now implicit in spin_unlock(), so there's no reason to call
it from driver code. Redefine i40iw_mmiowb() to do nothing instead.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-08 12:09:15 +01:00
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
Will Deacon
949b8c7276 drivers: Remove useless trailing comments from mmiowb() invocations
In preparation for using coccinelle to remove all mmiowb() instances
from drivers, remove all trailing comments since they won't be picked up
by spatch later on and will end up being preserved in the code.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-08 12:00:56 +01:00
Saeed Mahameed
b6460c72c3 Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
This merge commit includes some misc shared code updates from mlx5-next branch needed
for net-next.

1) From Maxim, Remove un-used macros and spinlock from mlx5 code.

2) From Aya, Expose Management PCIE info register layout and add rate limit
print macros.

3) From Tariq, Compilation warning fix in fs_core.c

4) From Vu, Huy and Saeed, Improve mlx5 initialization flow:
The goal is to provide a better logical separation of mlx5 core
device initialization flow and will help to seamlessly support
creating different mlx5 device types such as PF, VF and SF
mlx5 sub-function virtual devices.

Mlx5_core driver needs to separate HCA resources from pci resources.
Its initialize/load/unload will be broken into stages:
1. Initialize common data structures
2. Setup function which initializes pci resources (for PF/VF)
   or some other specific resources for virtual device
3. Initialize software objects according to hardware capabilities
4. Load all mlx5_core components

It is also necessary to detach mlx5_core mdev name/message from pci
device mdev->pdev name/message for a clearer report/debug of
different mlx5 device types.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-04-05 14:10:16 -07:00
Leon Romanovsky
c7252a6532 RDMA/cm: Remove useless zeroing of static global variable
Static global variables are initialized to zero by C standard,
there is no need to zero them again.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-04 08:29:04 -03:00
Potnuri Bharat Teja
d2c33370ae RDMA/iw_cxgb4: Always disconnect when QP is transitioning to TERMINATE state
On receiving a TERM from tje peer, Host moves the QP to TERMINATE state
and then moves the adapter out of RDMA mode. After issuing a TERM, peer
issues a CLOSE and at this point of time if the connectivity between peer
and host is lost for a significant amount of time, the QP remains in
TERMINATE state.

Therefore c4iw_modify_qp() needs to initiate a close on entering terminate
state.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-04 08:29:04 -03:00
Leon Romanovsky
0f51427bd0 RDMA/mlx5: Cleanup WQE page fault handler
Refactor the page fault handler to be more readable and extensible, this
cleanup was triggered by the error reported below. The code structure made
it unclear to the automatic tools to identify that such a flow is not
possible in real life because "requestor != NULL" means that "qp != NULL"
too.

    drivers/infiniband/hw/mlx5/odp.c:1254 mlx5_ib_mr_wqe_pfault_handler()
    error: we previously assumed 'qp' could be null (see line 1230)

Fixes: 08100fad5c ("IB/mlx5: Add ODP SRQ support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-04 08:28:59 -03:00
Jason Gunthorpe
1c726c4421 Merge HFI1 updates into k.o/for-next
Based on rdma.git for-rc for dependencies.

From Dennis Dalessandro:

====================

Here are some code improvement patches and fixes for less serious bugs to
TID RDMA than we sent for RC.

====================

* HFI1 updates:
  IB/hfi1: Implement CCA for TID RDMA protocol
  IB/hfi1: Remove WARN_ON when freeing expected receive groups
  IB/hfi1: Unify the software PSN check for TID RDMA READ/WRITE
  IB/hfi1: Add a function to read next expected psn from hardware flow
  IB/hfi1: Delay the release of destination mr for TID RDMA WRITE DATA

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-03 15:28:05 -03:00
Kaike Wan
747b931fbe IB/hfi1: Implement CCA for TID RDMA protocol
Currently, FECN handling is not implemented on TID RDMA expected receive
packets and therefore CCA can't be turned on when TID RDMA is
enabled. This patch adds the CCA support to TID RDMA protocol by:

- modifying FECN RSM rule to include kernel receive contexts

- For TID_RDMA READ RESP or TID RDMA ACK packet, a CNP will be sent out if
  the FECN bit is set. For other TID RDMA packets that generate at least
  one response packet, the BECN bit will be set in the first response
  packet

- Copying expected packet data to destination buffer when FECN bit is set
  in the TID RDMA READ RESP or TID RDMA WRITE DATA packet. In this case,
  the expected packet is received as an eager packet

- Handling the TID sequence error for subsequent normal expected packets.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@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>
2019-04-03 15:27:39 -03:00
Kaike Wan
8da0f0f26f IB/hfi1: Remove WARN_ON when freeing expected receive groups
When PSM user receive context is freed, the expected receive groups
allocated by the receive context will also been freed. However, if there
are still TID entries in use, the receive groups rcd->tid_full_list or
rcd->tid_used_list will not be empty, and thus triggering the WARN_ONs in
the function hfi1_free_ctxt_rcv_groups().  Even if the two lists may not
be empty, the hfi1 driver will free all TID entries and receive groups
associated with the receive context to prevent any resource leakage. Since
a clean user application exit is not controlled by the hfi1 driver, this
patch will remove the WARN_ONs in hfi1_free_ctxt_rcv_groups().

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@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>
2019-04-03 15:27:30 -03:00
Kaike Wan
b885d5be9c IB/hfi1: Unify the software PSN check for TID RDMA READ/WRITE
For expected packet receiving, the hfi1 hardware checks the KDETH PSN
automatically. However, when sequence error occurs, the hfi1 driver can
check the sequence instead until the hardware flow generation is reloaded.

TID RDMA READ and WRITE protocols implement similar software checking
mechanisms, but with different flags and different local variables to
store next expected PSN.

Unify the handling by using only one set of flag and local variable for
both TID RDMA READ and WRITE protocols.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@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>
2019-04-03 15:27:30 -03:00
Kaike Wan
6a40693a88 IB/hfi1: Add a function to read next expected psn from hardware flow
This patch adds a function to read next expected KDETH PSN from hardware
flow to simplify the code.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@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>
2019-04-03 15:27:30 -03:00
Kaike Wan
f6f3f53255 IB/hfi1: Delay the release of destination mr for TID RDMA WRITE DATA
The reference of destination memory region is first obtained when TID RDMA
WRITE request is first received on the responder side. This reference is
released once all TID RDMA WRITE RESP packets are sent to the requester
side, even though not all TID RDMA WRITE DATA packets may have been
received. This early release will especially be undesired if the software
needs to access the destination memory before the last data packet is
received.

This patch delays the release of the MR until all TID RDMA DATA packets
have been received. A helper function to release the reference is also
created to simplify the code.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@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>
2019-04-03 15:27:30 -03:00
Leon Romanovsky
061ccb52d2 RDMA/cma: Set proper port number as index
Conversion from IDR to XArray missed the fact that idr_alloc() returned
index as a return value, this index was saved in port variable and used as
query index later on. This caused to the following error.

 BUG: KASAN: use-after-free in cma_check_port+0x86a/0xa20 [rdma_cm]
 Read of size 8 at addr ffff888069fde998 by task ucmatose/387
 CPU: 3 PID: 387 Comm: ucmatose Not tainted 5.1.0-rc2+ #253
 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014
 Call Trace:
  dump_stack+0x7c/0xc0
  print_address_description+0x6c/0x23c
  ? cma_check_port+0x86a/0xa20 [rdma_cm]
  kasan_report.cold.3+0x1c/0x35
  ? cma_check_port+0x86a/0xa20 [rdma_cm]
  ? cma_check_port+0x86a/0xa20 [rdma_cm]
  cma_check_port+0x86a/0xa20 [rdma_cm]
  rdma_bind_addr+0x11bc/0x1b00 [rdma_cm]
  ? find_held_lock+0x33/0x1c0
  ? cma_ndev_work_handler+0x180/0x180 [rdma_cm]
  ? wait_for_completion+0x3d0/0x3d0
  ucma_bind+0x120/0x160 [rdma_ucm]
  ? ucma_resolve_addr+0x1a0/0x1a0 [rdma_ucm]
  ucma_write+0x1f8/0x2b0 [rdma_ucm]
  ? ucma_open+0x260/0x260 [rdma_ucm]
  vfs_write+0x157/0x460
  ksys_write+0xb8/0x170
  ? __ia32_sys_read+0xb0/0xb0
  ? trace_hardirqs_off_caller+0x5b/0x160
  ? do_syscall_64+0x18/0x3c0
  do_syscall_64+0x95/0x3c0
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

  Allocated by task 381:
   __kasan_kmalloc.constprop.5+0xc1/0xd0
   cma_alloc_port+0x4d/0x160 [rdma_cm]
   rdma_bind_addr+0x14e7/0x1b00 [rdma_cm]
   ucma_bind+0x120/0x160 [rdma_ucm]
   ucma_write+0x1f8/0x2b0 [rdma_ucm]
   vfs_write+0x157/0x460
   ksys_write+0xb8/0x170
   do_syscall_64+0x95/0x3c0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

  Freed by task 381:
   __kasan_slab_free+0x12e/0x180
   kfree+0xed/0x290
   rdma_destroy_id+0x6b6/0x9e0 [rdma_cm]
   ucma_close+0x110/0x300 [rdma_ucm]
   __fput+0x25a/0x740
   task_work_run+0x10e/0x190
   do_exit+0x85e/0x29e0
   do_group_exit+0xf0/0x2e0
   get_signal+0x2e0/0x17e0
   do_signal+0x94/0x1570
   exit_to_usermode_loop+0xfa/0x130
   do_syscall_64+0x327/0x3c0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Reported-by: <syzbot+2e3e485d5697ea610460@syzkaller.appspotmail.com>
Reported-by: Ran Rozenstein <ranro@mellanox.com>
Fixes: 638267537a ("cma: Convert portspace IDRs to XArray")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-03 15:20:32 -03:00
Huy Nguyen
aa8106f137 net/mlx5: Add explicit bar address field
Add bar_addr field to store bar-0 address to avoid calling
pci_resource_start with hard-coded bar-0 as parameter.
Also note that different mlx5 device types will have bar_addr
on different bars.

This patch does not change any functionality.

Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Vu Pham <vuhuong@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-04-02 12:49:38 -07:00
Maxim Mikityanskiy
bbf29f618e net/mlx5: Remove spinlock support from mlx5_write64
As there is no user of mlx5_write64 that passes a spinlock to
mlx5_write64, remove this functionality and simplify the function.

Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-04-02 12:49:37 -07:00
Leon Romanovsky
6734b29735 RDMA/hns: Fix bad endianess of port_pd variable
port_pd is treated as le32 in declaration and read, fix assignment to be
in le32 too. This change fixes the following compilation warnings.

drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: warning: incorrect type
in assignment (different base types)
drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: expected restricted __le32 [usertype] port_pd
drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: got restricted __be32 [usertype]

Fixes: 9a4435375c ("IB/hns: Add driver files for hns RoCE driver")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Lijun Ou <ouliun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-02 10:40:41 -03:00
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
Shamir Rabinovitch
a6a3797df2 IB: Pass uverbs_attr_bundle down uobject destroy path
Pass uverbs_attr_bundle down the uobject destroy path. The next patch will
use this to eliminate the dependecy of the drivers in ib_x->uobject
pointers.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 14:55:36 -03:00
Shamir Rabinovitch
70f06b26f0 IB: ucontext should be set properly for all cmd & ioctl paths
the Attempt to use the below commit to initialize the ucontext for the
uobject destroy path has shown that the below commit is incomplete.

Parts were reverted and the ucontext set up in the uverbs_attr_bundle was
moved to rdma_lookup_get_uobject which is called from the uobj_get_XXX
macros and rdma_alloc_begin_uobject which is called when uobject is
created.

Fixes: 3d9dfd0603 ("IB/uverbs: Add ib_ucontext to uverbs_attr_bundle sent from ioctl and cmd flows")
Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 14:55:03 -03:00
Matthew Wilcox
fae7a699a9 opa_vnic: Convert vport_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 14:18:15 -03:00
Matthew Wilcox
059d48fbf6 qib: Convert qib_unit_table to XArray
Also remove qib_devs_list.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 13:31:35 -03:00
Matthew Wilcox
03b92789e5 hfi1: Convert hfi1_unit_table to XArray
Also remove hfi1_devs_list.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01 13:27:35 -03:00
Matthew Wilcox
9fd15987ed qedr: Convert srqidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-29 14:54:51 -03:00
Matthew Wilcox
b6014f9e5f qedr: Convert qpidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-29 14:53:57 -03:00
David Ahern
3616d08bcb ipv6: Move ipv6 stubs to a separate header file
The number of stubs is growing and has nothing to do with addrconf.
Move the definition of the stubs to a separate header file and update
users. In the move, drop the vxlan specific comment before ipv6_stub.

Code move only; no functional change intended.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-29 10:53:45 -07:00
Matthew Wilcox
0ee3b915b1 hfi1: Convert vesw_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-29 14:51:50 -03:00
Matthew Wilcox
736b5a70db RDMA/hns: Convert qp_table_tree to XArray
Also fully initialise the qp before storing it in the XArray.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-29 14:51:50 -03:00
Matthew Wilcox
27e19f4510 RDMA/hns: Convert cq_table to XArray
Change the locking to not disable interrupts as the lookup in interrupt
context will not see a freed CQ, thanks to the synchronize_irq() call
before freeing the CQ.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-29 14:40:40 -03:00
Parav Pandit
2b34c55802 RDMA/core: Add command to set ib_core device net namspace sharing mode
Add netlink command that enables/disables sharing rdma device among
multiple net namespaces.

Using rdma tool,
$rdma sys set netns shared (default mode)

When rdma subsystem netns mode is set to shared mode, rdma devices
will be accessible in all net namespaces.

Using rdma tool,
$rdma sys set netns exclusive

When rdma subsystem netns mode is set to exclusive mode, devices
will be accessible in only one net namespace at any given
point of time.

If there are any net namespaces other than default init_net exists,
while executing this command, it will fail and mode cannot be changed.

To change this mode, netlink command is used instead of sysctl, because
netlink command allows to auto load a module.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
cb7e0e1305 RDMA/core: Add interface to read device namespace sharing mode
Add an interface via netlink command to query whether rdma devices are
shared among multiple net namespaces or not. When using RDMAtool, it can
be queried as,

$rdma system show netns
netns shared

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
37eeab55ae RDMA/core: Extend ib_device_get_by_index for net namespace
Extend ib_device_get_by_index() API to check device access for
net namespace for serving netlink commands.

Also enforce net ns check on dumpit commands which iterate over all
registered rdma devices and which don't call ib_device_get_by_index().

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
41c6140189 RDMA: Check net namespace access for uverbs, umad, cma and nldev
Introduce an API rdma_dev_access_netns() to check whether a rdma device
can be accessed from the specified net namespace or not.
Use rdma_dev_access_netns() while opening character uverbs, umad network
device and also check while rdma cm_id binds to rdma device.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
a56bc45b27 RDMA/core: Add module param to disable device sharing among net ns
Add module parameter to change a sharing mode of ib_core early in the
boot process. This parameter helps to those systems where modern up
to date rdma tool (iproute2) package may not be available during
kernel upgrade cycle.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
5417783eab RDMA/core: Support core port attributes in non init_net
Now that sysfs compatibility layer for non init_net exists, add core port
attributes such as pkey and gid table to non init_net ns.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
4e0f7b9070 RDMA/core: Implement compat device/sysfs tree in net namespace
Implement compatibility layer sysfs entries of ib_core so that non
init_net net namespaces can also discover rdma devices.

Each non init_net net namespace has ib_core_device created in it.
Such ib_core_device sysfs tree resembles rdma devices found in
init_net namespace.

This allows discovering rdma devices in multiple non init_net net
namespaces via sysfs entries and helpful to rdma-core userspace.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
62dfa7955e RDMA/core: Restrict sysfs entries view to init_net
This is a preparation patch to provide isolation of rdma device in a
network namespace.

As first step, make rdma device visible only in init net namespace.
Subsequent patch will enable rdma device visibility back in multiple net
namespaces using compat ib_core_device device/sysfs tree.

Given that the IB subsystem depends on net stack, it needs to be
initialized after netdev and since it support devices, it needs to be
initialized before the device subsystem; therefore, change initcall
sequence to fs_initcall, so that when ib_core is compiled in the kernel
image, the right init sequence is followed.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Parav Pandit
cebe556bd7 RDMA/core: Introduce ib_core_device to hold device
In order to support sysfs entries in multiple net namespaces for a rdma
device, introduce a ib_core_device whose scope is limited to hold core
device and per port sysfs related entries.

This is preparation patch so that multiple ib_core_devices in each net
namespace can be created in subsequent patch who all can share ib_device.

(a) Move sysfs specific fields to ib_core_device.
(b) Make sysfs and device life cycle related routines to work on
    ib_core_device.
(c) Introduce and use rdma_init_coredev() helper to initialize
    coredev fields.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:52:02 -03:00
Shiraz Saleem
629e6f9db6 RDMA/rdmavt: Use correct sizing on buffers holding page DMA addresses
The buffer that holds the page DMA addresses is sized off umem->nmap.
This can potentially cause out of bound accesses on the PBL array when
iterating the umem DMA-mapped SGL. This is because if umem pages are
combined, umem->nmap can be much lower than the number of system pages
in umem.

Use ib_umem_num_pages() to size this buffer.

Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:13:27 -03:00
Shiraz Saleem
93923d309b RDMA/rxe: Use correct sizing on buffers holding page DMA addresses
The buffer that holds the page DMA addresses is sized off umem->nmap.
This can potentially cause out of bound accesses on the PBL array when
iterating the umem DMA-mapped SGL. This is because if umem pages are
combined, umem->nmap can be much lower than the number of system pages
in umem.

Use ib_umem_num_pages() to size this buffer.

Cc: Moni Shoua <monis@mellanox.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:13:27 -03:00
Shiraz Saleem
41d34865b2 RDMA/mthca: Use correct sizing on buffers holding page DMA addresses
The buffer that holds the page DMA addresses is sized off umem->nmap.
This can potentially cause out of bound accesses on the PBL array when
iterating the umem DMA-mapped SGL. This is because if umem pages are
combined, umem->nmap can be much lower than the number of system pages
in umem.

Use ib_umem_num_pages() to size this buffer.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:13:27 -03:00
Shiraz Saleem
5f818d676a RDMA/cxbg: Use correct sizing on buffers holding page DMA addresses
The PBL array that hold the page DMA address is sized off umem->nmap.
This can potentially cause out of bound accesses on the PBL array when
iterating the umem DMA-mapped SGL. This is because if umem pages are
combined, umem->nmap can be much lower than the number of system pages
in umem.

Use ib_umem_num_pages() to size this array.

Cc: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:13:27 -03:00
Selvin Xavier
5aa8484080 RDMA/bnxt_re: Use correct sizing on buffers holding page DMA addresses
umem->nmap is used while allocating internal buffer for storing
page DMA addresses. This causes out of bounds array access while iterating
the umem DMA-mapped SGL with umem page combining as umem->nmap can be
less than number of system pages in umem.

Use ib_umem_num_pages() instead of umem->nmap to size the page array.
Add a new structure (bnxt_qplib_sg_info) to pass sglist, npages and nmap.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 14:13:27 -03:00
Bart Van Assche
196b4ce57d IB/qib: Remove a set-but-not-used variable
This patch avoids that a compiler warning is reported when building with
W=1.

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Fixes: 49c0e2414b ("IB/qib: Change SDMA progression mode depending on single- or multi-rail")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 11:03:49 -03:00
Bart Van Assche
920d10e458 IB/hfi1: Fix two format strings
Enable format string checking for hfi1_cdbg() and fix the resulting
compiler warnings.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 11:03:49 -03:00
Bart Van Assche
1f687edee2 IB/mlx5: Declare devx_async_cmd_event_fops static
Avoid that sparse complains about a missing declaration.

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Fixes: 6bf8f22aea ("IB/mlx5: Introduce MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 10:22:48 -03:00
Bart Van Assche
0080aed4e4 RDMA/uverbs: Allow the compiler to verify declaration and definition consistency
This patch avoids that sparse reports the following warnings:

drivers/infiniband/core/uverbs_std_types_flow_action.c:442:30: warning: symbol 'uverbs_def_obj_flow_action' was not declared. Should it be static?
drivers/infiniband/core/uverbs_std_types_dm.c:112:30: warning: symbol 'uverbs_def_obj_dm' was not declared. Should it be static?
drivers/infiniband/core/uverbs_std_types_counters.c:153:30: warning: symbol 'uverbs_def_obj_counters' was not declared. Should it be static?
drivers/infiniband/core/uverbs_std_types_mr.c:213:30: warning: symbol 'uverbs_def_obj_mr' was not declared. Should it be static?

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Fixes: 0bd01f3d09 ("RDMA/uverbs: Require all objects to have a driver destroy function")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 10:22:48 -03:00
Bart Van Assche
2dcdebff5e RDMA/uverbs: Annotate uverbs_request_next_ptr() return value as a __user pointer
This patch avoids that sparse complains about a mismatch between the
returned value and the function return type.

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Fixes: c3bea3d2dc ("RDMA/uverbs: Use the iterator for ib_uverbs_unmarshall_recv()")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 10:22:48 -03:00
Bart Van Assche
259e66bcdf RDMA/uverbs: Add a __user annotation to a pointer
This patch avoids that sparse and smatch report the following:

  warning: cast removes address space of expression

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Fixes: 3a6532c9af ("RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28 10:22:48 -03:00
David S. Miller
356d71e00d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-27 17:37:58 -07:00
Zhu Yanjun
08304d7146 IB/rxe: Replace av->network_type with skb->protocol
In the function rxe_init_packet, based on av->network_type, skb->protocol
is set to ipv4 or ipv6. The functions rxe_prepare and rxe_send are called
after the functin rxe_init_packet.  So in these functions,
av->network_type can be replaced with skb->protocol.

The functions are in the xmit fast path. So with skb->protocol, the
performance will be better.

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 16:23:09 -03:00
Ira Weiny
2ccfbb70c2 IB/MAD: Add SMP details to MAD tracing
Decode more information from the packet and include it in the trace.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:52:01 -03:00
Ira Weiny
056533192a IB/UMAD: Add umad trace points
Trace MADs going to/from user space.

Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:52:01 -03:00
Ira Weiny
0e65bae205 IB/MAD: Add agent trace points
Trace agent details when agents are [un]registered.  In addition, report
agent details on send/recv.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:52:00 -03:00
Ira Weiny
821bf1de45 IB/MAD: Add recv path trace point
Trace received MAD details.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:52:00 -03:00
Ira Weiny
4d60cad5db IB/MAD: Add send path trace points
Use the standard Linux trace mechanism to trace MADs being sent.  4 trace
points are added, when the MAD is posted to the qp, when the MAD is
completed, if a MAD is resent, and when the MAD completes in error.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:52:00 -03:00
Yuval Shaia
6a1096611c RDMA/vmw_pvrdma: Skip zeroing device attrs
Caller already clears props before calling query_device.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:30:43 -03:00
Artemy Kovalyov
d623dfd283 IB/mlx5: Compare only index part of a memory window rkey
The InfiniBand Architecture Specification section 10.6.7.2.4 TYPE 2 MEMORY
WINDOWS says that if the CI supports the Base Memory Management Extensions
defined in this specification, the R_Key format for a Type 2 Memory Window
must consist of:

* 24 bit index in the most significant bits of the R_Key, which is owned
  by the CI, and
* 8 bit key in the least significant bits of the R_Key, which is owned by
  the Consumer.

This means that the kernel should compare only the index part of a R_Key
to determine equality with another R_Key.

Fixes: db570d7dea ("IB/mlx5: Add ODP support to MW")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:27:56 -03:00
Artemy Kovalyov
1e5887b700 IB/mlx5: WQE dump jumps over first 16 bytes
Move index increment after its is used or otherwise it will start the dump
of the WQE from second WQE BB.

Fixes: 34f4c9554d ("IB/mlx5: Use fragmented QP's buffer for in-kernel users")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:27:33 -03:00
Moni Shoua
1abe186ed8 IB/mlx5: Reset access mask when looping inside page fault handler
If page-fault handler spans multiple MRs then the access mask needs to
be reset before each MR handling or otherwise write access will be
granted to mapped pages instead of read-only.

Cc: <stable@vger.kernel.org> # 3.19
Fixes: 7bdf65d411 ("IB/mlx5: Handle page faults")
Reported-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:27:11 -03:00
Leon Romanovsky
e95e52a178 RDMA/hns: Limit scope of hns_roce_cmq_send()
The forgotten static keyword causes to the following error to appear while
building HNS driver. Declare hns_roce_cmq_send() to be static function to
fix this warning.

drivers/infiniband/hw/hns/hns_roce_hw_v2.c:1089:5: warning: no previous
prototype for _hns_roce_cmq_send_ [-Wmissing-prototypes]
 int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,

Fixes: 6a04aed6af ("RDMA/hns: Fix the chip hanging caused by sending mailbox&CMQ during reset")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 15:25:50 -03:00
Kaike Wan
d029434447 IB/hfi1: Fix the allocation of RSM table
The receive side mapping (RSM) on hfi1 hardware is a special
matching mechanism to direct an incoming packet to a given
hardware receive context. It has 4 instances of matching capabilities
(RSM0 - RSM3) that share the same RSM table (RMT). The RMT has a total of
256 entries, each of which points to a receive context.

Currently, three instances of RSM have been used:
1. RSM0 by QOS;
2. RSM1 by PSM FECN;
3. RSM2 by VNIC.

Each RSM instance should reserve enough entries in RMT to function
properly. Since both PSM and VNIC could allocate any receive context
between dd->first_dyn_alloc_ctxt and dd->num_rcv_contexts, PSM FECN must
reserve enough RMT entries to cover the entire receive context index
range (dd->num_rcv_contexts - dd->first_dyn_alloc_ctxt) instead of only
the user receive contexts allocated for PSM
(dd->num_user_contexts). Consequently, the sizing of
dd->num_user_contexts in set_up_context_variables is incorrect.

Fixes: 2280740f01 ("IB/hfi1: Virtual Network Interface Controller (VNIC) HW support")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@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>
2019-03-27 14:34:31 -03:00
Kaike Wan
a8639a79e8 IB/hfi1: Eliminate opcode tests on mr deref
When an old ack_queue entry is used to store an incoming request, it may
need to clean up the old entry if it is still referencing the
MR. Originally only RDMA READ request needed to reference MR on the
responder side and therefore the opcode was tested when cleaning up the
old entry. The introduction of tid rdma specific operations in the
ack_queue makes the specific opcode tests wrong.  Multiple opcodes (RDMA
READ, TID RDMA READ, and TID RDMA WRITE) may need MR ref cleanup.

Remove the opcode specific tests associated with the ack_queue.

Fixes: f48ad614c1 ("IB/hfi1: Move driver out of staging")
Signed-off-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>
2019-03-27 14:34:31 -03:00
Kaike Wan
93b289b9af IB/hfi1: Clear the IOWAIT pending bits when QP is put into error state
When a QP is put into error state, it may be waiting for send engine
resources. In this case, the QP will be removed from the send engine's
waiting list, but its IOWAIT pending bits are not cleared. This will
normally not have any major impact as the QP is being destroyed.  However,
the QP still needs to wind down its operations, such as draining the send
queue by scheduling the send engine. Clearing the pending bits will avoid
any potential complications. In addition, if the QP will eventually hang,
clearing the pending bits can help debugging by presenting a consistent
picture if the user dumps the qp_stats.

This patch clears a QP's IOWAIT_PENDING_IB and IO_PENDING_TID bits in
priv->s_iowait.flags in this case.

Fixes: 5da0fc9dbf ("IB/hfi1: Prepare resource waits for dual leg")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Alex Estrin <alex.estrin@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>
2019-03-27 14:34:31 -03:00
Kaike Wan
662d664666 IB/hfi1: Failed to drain send queue when QP is put into error state
When a QP is put into error state, all pending requests in the send work
queue should be drained. The following sequence of events could lead to a
failure, causing a request to hang:

(1) The QP builds a packet and tries to send through SDMA engine.
    However, PIO engine is still busy. Consequently, this packet is put on
    the QP's tx list and the QP is put on the PIO waiting list. The field
    qp->s_flags is set with HFI1_S_WAIT_PIO_DRAIN;

(2) The QP is put into error state by the user application and
    notify_error_qp() is called, which removes the QP from the PIO waiting
    list and the packet from the QP's tx list. In addition, qp->s_flags is
    cleared of RVT_S_ANY_WAIT_IO bits, which does not include
    HFI1_S_WAIT_PIO_DRAIN bit;

(3) The hfi1_schdule_send() function is called to drain the QP's send
    queue. Subsequently, hfi1_do_send() is called. Since the flag bit
    HFI1_S_WAIT_PIO_DRAIN is set in qp->s_flags, hfi1_send_ok() fails.  As
    a result, hfi1_do_send() bails out without draining any request from
    the send queue;

(4) The PIO engine completes the sending and tries to wake up any QP on
    its waiting list. But the QP has been removed from the PIO waiting
    list and therefore is kept in sleep forever.

The fix is to clear qp->s_flags of HFI1_S_ANY_WAIT_IO bits in step (2).
HFI1_S_ANY_WAIT_IO includes RVT_S_ANY_WAIT_IO and HFI1_S_WAIT_PIO_DRAIN.

Fixes: 2e2ba09e48 ("IB/rdmavt, IB/hfi1: Create device dependent s_flags")
Cc: <stable@vger.kernel.org> # 4.19.x+
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Alex Estrin <alex.estrin@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>
2019-03-27 14:34:31 -03:00
Colin Ian King
9513ea4f67 IB/iser: remove uninitialized variable len
The variable len is not being inintialized and the uninitialized value is
being returned. However, this return path is never reached because the
default case in the switch statement returns -ENOSYS.  Clean up the code
by replacing the return -ENOSYS with a break for the default case and
returning -ENOSYS at the end of the function.  This allows len to be
removed.  Also remove redundant break that follows a return statement.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 10:20:33 -03:00
Kangjie Lu
e2a438bd71 RDMA/i40iw: Handle workqueue allocation failure
alloc_ordered_workqueue may fail and return NULL.  The fix captures the
failure and handles it properly to avoid potential NULL pointer
dereferences.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-27 10:19:07 -03:00
Ira Weiny
4ae2744410 IB/core: Ensure an invalidate_range callback on ODP MR
No device supports ODP MR without an invalidate_range callback.

Warn on any any device which attempts to support ODP without supplying
this callback.

Then we can remove the checks for the callback within the code.

This stems from the discussion

https://www.spinics.net/lists/linux-rdma/msg76460.html

...which concluded this code was no longer necessary.

Acked-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 16:39:40 -03:00
Leon Romanovsky
a4b7013db2 RDMA/rxe: Fix slab-out-bounds access which lead to kernel crash later
BUG: KASAN: slab-out-of-bounds in rxe_mem_init_user+0x6c1/0x740 [rdma_rxe]
Read of size 8 at addr ffff88805c01a608 by task ib_send_bw/573

CPU: 24 PID: 573 Comm: ib_send_bw Not tainted 5.0.0-rc5+ #189
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014
Call Trace:
 rxe_mem_init_user+0x6c1/0x740 [rdma_rxe]
 rxe_reg_user_mr+0x9b/0x110 [rdma_rxe]
 ib_uverbs_reg_mr+0x428/0x9c0 [ib_uverbs]
 ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x2b0/0x410 [ib_uverbs]
 ib_uverbs_run_method+0x79c/0x1da0 [ib_uverbs]
 rxe_mem_init_user+0x6c1/0x740 [rdma_rxe]
 rxe_reg_user_mr+0x9b/0x110 [rdma_rxe]
 ib_uverbs_reg_mr+0x428/0x9c0 [ib_uverbs]
 ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x2b0/0x410 [ib_uverbs]
 ib_uverbs_run_method+0x79c/0x1da0 [ib_uverbs]
 ib_uverbs_cmd_verbs+0x5f2/0xf20 [ib_uverbs]
 ib_uverbs_ioctl+0x202/0x310 [ib_uverbs]
 do_vfs_ioctl+0x193/0x1440
 ksys_ioctl+0x3a/0x70
 __x64_sys_ioctl+0x6f/0xb0
 do_syscall_64+0x13f/0x570
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Allocated by task 573:
 __kasan_kmalloc.constprop.5+0xc1/0xd0
 __kmalloc+0x161/0x310
 rxe_mem_alloc+0x52/0x470 [rdma_rxe]
 rxe_mem_init_user+0x113/0x740 [rdma_rxe]
 rxe_reg_user_mr+0x9b/0x110 [rdma_rxe]
 ib_uverbs_reg_mr+0x428/0x9c0 [ib_uverbs]
 ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x2b0/0x410 [ib_uverbs]
 ib_uverbs_run_method+0x79c/0x1da0 [ib_uverbs]
 ib_uverbs_cmd_verbs+0x5f2/0xf20 [ib_uverbs]
 ib_uverbs_ioctl+0x202/0x310 [ib_uverbs]
 do_vfs_ioctl+0x193/0x1440
 ksys_ioctl+0x3a/0x70
 __x64_sys_ioctl+0x6f/0xb0
 do_syscall_64+0x13f/0x570
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 0:
 __kasan_slab_free+0x12e/0x180
 kfree+0x10a/0x2c0
 rcu_process_callbacks+0xa77/0x1260
 __do_softirq+0x2ad/0xacb

Test scenario:
 ib_send_bw -x 1 -d rxe0 -a &
 ib_send_bw -x 1 -d rxe0 -a localhost

Fixes: 8700e3e7c4 ("Soft RoCE driver")
Reported-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Tested-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 12:51:10 -03:00
Enrico Weigelt, metux IT consult
1a2e158327 drivers: infiniband: Fix whitespace in kconfig
Adjust the kconfig whitespace in bnxt_re/iser to match the kernel
standard.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 12:49:33 -03:00
Colin Ian King
a6a9274a7c RDMA/nes: remove redundant check on udata
The non-null check on udata is redundant as this check was performed just
a few statements earlier and the check is always true as udata must be
non-null at this point. Remove redundant the check on udata and the
redundant else part that can never be executed.

Detected by CoverityScan, CID#1477317 ("Logically dead code")

Fixes: 8994445054 ("IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIs")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 12:07:45 -03:00
Matthew Wilcox
638267537a cma: Convert portspace IDRs to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 12:00:15 -03:00
Matthew Wilcox
81cc440883 ucm: Convert ctx_id_table to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 11:50:29 -03:00
Matthew Wilcox
8e5a9d61e2 ib core: Convert query_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 11:47:05 -03:00
Matthew Wilcox
ae78ff3a0f RDMA/cm: Convert local_id_table to XArray
Also introduce cm_local_id() to reduce the amount of boilerplate when
converting a local ID to an XArray index.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 11:44:22 -03:00
Matthew Wilcox
949a237046 IB/mad: Convert ib_mad_clients to XArray
Pull the allocation function out into its own function to reduce the
length of ib_register_mad_agent() a little and keep all the allocation
logic together.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 11:36:20 -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
Matthew Wilcox
b02a29eb88 mlx5: Convert mlx5_srq_table to XArray
Remove the custom spinlock as the XArray handles its own locking.

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 09:39:42 -03:00
Mike Marciniszyn
270a9833b2 IB/hfi1: Add running average for adaptive pio
The adaptive PIO implementation only considers the current packet size
when deciding between SDMA and pio for a packet.

This causes credit return forces if small and large packets are
interleaved.

Add a running average to avoid costly credit forces so that a large
sequence of small packets is required to go below the threshold that
chooses pio.

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-26 09:33:21 -03:00
Erez Alfasi
19b1a294b0 RDMA: Use __packed annotation instead of __attribute__ ((packed))
"__attribute__" set of macros has been standardized, have became more
potentially portable and consistent code back in v2.6.21 by commit
82ddcb040 ("[PATCH] extend the set of "__attribute__" shortcut macros").
Moreover, nowadays checkpatch.pl warns about using __attribute__((packed))
instead of __packed.

This patch converts all the "__attribute__ ((packed))" annotations to
"__packed" within the RDMA subsystem.

Signed-off-by: Erez Alfasi <ereza@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 21:14:12 -03:00
Lijun Ou
d0a935563b RDMA/hns: Delete unused variable in hns_roce_v2_modify_qp function
The src_mac array is not used in hns_roce_v2_modify_qp function.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 21:11:30 -03:00
Lijun Ou
82342e493b RDMA/hns: Bugfix for sending with invalidate
According to IB protocol, the send with invalidate operation will not
invalidate mr that was created through a register mr or reregister mr.

Fixes: e93df01085 ("RDMA/hns: Support local invalidate for hip08 in kernel space")
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:56 -03:00
Lijun Ou
07c2339a91 RDMA/hns: Hide error print information with roce vf device
The driver should not print the error information when the hip08 driver
not support virtual function.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:55 -03:00
Lijun Ou
5b01b243b0 RDMA/hns: Only assgin some fields if the relatived attr_mask is set
According to IB protocol, some fields of qp context are filled with
optional when the relatived attr_mask are set. The relatived attr_mask
include IB_QP_TIMEOUT, IB_QP_RETRY_CNT, IB_QP_RNR_RETRY and
IB_QP_MIN_RNR_TIMER.  Besides, we move some assignments of the fields of
qp context into the outside of the specific qp state jump function.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:55 -03:00
Lijun Ou
834fa8cf6f RDMA/hns: Update the range of raq_psn field of qp context
According to hip08 UM(User Manual), the raq_psn field size is [23:0].

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:55 -03:00
Lijun Ou
601f3e6d06 RDMA/hns: Only assign the fields of the rq psn if IB_QP_RQ_PSN is set
Only when the IB_QP_RQ_PSN flags of attr_mask is set is it valid to assign
the relatived fields of rq'psn into the qp context when modified qp.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:55 -03:00
Lijun Ou
f04cc17878 RDMA/hns: Only assign the relatived fields of psn if IB_QP_SQ_PSN is set
Only when the IB_QP_SQ_PSN flags of attr_mask is set is it valid to assign
the relatived fields of psn into the qp context when modified qp.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:59:55 -03:00
Matthew Wilcox
401b44804c cxgb4: Convert stid_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:56:36 -03:00
Matthew Wilcox
9f5a9632e4 cxgb4: Convert atid_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 20:56:36 -03:00
Matthew Wilcox
f254ba6ae5 cxgb4: Convert hwtid_idr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:42:12 -03:00
Matthew Wilcox
7a268a9397 cxgb4: Convert mmidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:40:37 -03:00
Matthew Wilcox
2f43129127 cxgb4: Convert qpidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:39:18 -03:00
Matthew Wilcox
52e124c27e cxgb4: Convert cqidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:38:18 -03:00
Matthew Wilcox
e64a7c02f1 cxgb3: Convert mmidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:36:29 -03:00
Matthew Wilcox
27114876ce cxgb3: Convert qpidr to XArray
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:35:08 -03:00
Matthew Wilcox
a2f409713e cxgb3: Convert cqidr to XArray
It would make sense to convert this to an allocating XArray and remove the
kfifo that is currently used to allocate the CQID, but that work is better
done by someone who has the hardware to test with.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-25 15:34:22 -03:00
Paolo Abeni
a350eccee5 net: remove 'fallback' argument from dev->ndo_select_queue()
After the previous patch, all the callers of ndo_select_queue()
provide as a 'fallback' argument netdev_pick_tx.
The only exceptions are nested calls to ndo_select_queue(),
which pass down the 'fallback' available in the current scope
- still netdev_pick_tx.

We can drop such argument and replace fallback() invocation with
netdev_pick_tx(). This avoids an indirect call per xmit packet
in some scenarios (TCP syn, UDP unconnected, XDP generic, pktgen)
with device drivers implementing such ndo. It also clean the code
a bit.

Tested with ixgbe and CONFIG_FCOE=m

With pktgen using queue xmit:
threads		vanilla 	patched
		(kpps)		(kpps)
1		2334		2428
2		4166		4278
4		7895		8100

 v1 -> v2:
 - rebased after helper's name change

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-20 11:18:55 -07:00
Feng Tang
ec4fe4bcc5 i40iw: Avoid panic when handling the inetdev event
There is a panic reported that on a system with x722 ethernet, when doing
the operations like:

	# ip link add br0 type bridge
	# ip link set eno1 master br0
	# systemctl restart systemd-networkd

The system will panic "BUG: unable to handle kernel null pointer
dereference at 0000000000000034", with call chain:

	i40iw_inetaddr_event
	notifier_call_chain
	blocking_notifier_call_chain
	notifier_call_chain
	__inet_del_ifa
	inet_rtm_deladdr
	rtnetlink_rcv_msg
	netlink_rcv_skb
	rtnetlink_rcv
	netlink_unicast
	netlink_sendmsg
	sock_sendmsg
	__sys_sendto

It is caused by "local_ipaddr = ntohl(in->ifa_list->ifa_address)", while
the in->ifa_list is NULL.

So add a check for the "in->ifa_list == NULL" case, and skip the ARP
operation accordingly.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-17 21:40:40 -03:00
Aya Levin
cd27287562 IB/mlx5: Fix mapping of link-mode to IB width and speed
Add mapping of link mode: CAUI4 100Gbps CR4/KR4 with 4 lines and 25Gbps.
Fix mapping of link mode: GAUI2 50Gbps CR2/KR2 to be 2 lines with 25Gbps.

Fixes: 08e8676f16 ("IB/mlx5: Add support for 50Gbps per lane link modes")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-17 21:40:39 -03:00
Yishai Hadas
c5ae1954c4 IB/mlx5: Use mlx5 core to create/destroy a DEVX DCT
To prevent a hardware memory leak when a DEVX DCT object is destroyed
without calling DRAIN DCT before, (e.g. under cleanup flow), need to
manage its creation and destruction via mlx5 core.

In that case the DRAIN DCT command will be called and only once that it
will be completed the DESTROY DCT command will be called.  Otherwise, the
DESTROY DCT may fail and a hardware leak may occur.

As of that change the DRAIN DCT command should not be exposed any more
from DEVX, it's managed internally by the driver to work as expected by
the device specification.

Fixes: 7efce3691d ("IB/mlx5: Add obj create and destroy functionality")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-17 21:40:39 -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
ea295481b6 XArray updates for 5.1-rc1
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Merge tag 'xarray-5.1-rc1' of git://git.infradead.org/users/willy/linux-dax

Pull XArray updates from Matthew Wilcox:
 "This pull request changes the xa_alloc() API. I'm only aware of one
  subsystem that has started trying to use it, and we agree on the fixup
  as part of the merge.

  The xa_insert() error code also changed to match xa_alloc() (EEXIST to
  EBUSY), and I added xa_alloc_cyclic(). Beyond that, the usual
  bugfixes, optimisations and tweaking.

  I now have a git tree with all users of the radix tree and IDR
  converted over to the XArray that I'll be feeding to maintainers over
  the next few weeks"

* tag 'xarray-5.1-rc1' of git://git.infradead.org/users/willy/linux-dax:
  XArray: Fix xa_reserve for 2-byte aligned entries
  XArray: Fix xa_erase of 2-byte aligned entries
  XArray: Use xa_cmpxchg to implement xa_reserve
  XArray: Fix xa_release in allocating arrays
  XArray: Mark xa_insert and xa_reserve as must_check
  XArray: Add cyclic allocation
  XArray: Redesign xa_alloc API
  XArray: Add support for 1s-based allocation
  XArray: Change xa_insert to return -EBUSY
  XArray: Update xa_erase family descriptions
  XArray tests: RCU lock prohibits GFP_KERNEL
2019-03-11 20:06:18 -07:00
Linus Torvalds
92fff53b71 SCSI misc on 20190306
This is mostly update of the usual drivers: arcmsr, qla2xxx, lpfc,
 hisi_sas, target/iscsi and target/core.  Additionally Christoph
 refactored gdth as part of the dma changes.  The major mid-layer
 change this time is the removal of bidi commands and with them the
 whole of the osd/exofs driver and filesystem.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly update of the usual drivers: arcmsr, qla2xxx, lpfc,
  hisi_sas, target/iscsi and target/core.

  Additionally Christoph refactored gdth as part of the dma changes. The
  major mid-layer change this time is the removal of bidi commands and
  with them the whole of the osd/exofs driver and filesystem. This is a
  major simplification for block and mq in particular"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (240 commits)
  scsi: cxgb4i: validate tcp sequence number only if chip version <= T5
  scsi: cxgb4i: get pf number from lldi->pf
  scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
  scsi: mpt3sas: Add missing breaks in switch statements
  scsi: aacraid: Fix missing break in switch statement
  scsi: kill command serial number
  scsi: csiostor: drop serial_number usage
  scsi: mvumi: use request tag instead of serial_number
  scsi: dpt_i2o: remove serial number usage
  scsi: st: osst: Remove negative constant left-shifts
  scsi: ufs-bsg: Allow reading descriptors
  scsi: ufs: Allow reading descriptor via raw upiu
  scsi: ufs-bsg: Change the calling convention for write descriptor
  scsi: ufs: Remove unused device quirks
  Revert "scsi: ufs: disable vccq if it's not needed by UFS device"
  scsi: megaraid_sas: Remove a bunch of set but not used variables
  scsi: clean obsolete return values of eh_timed_out
  scsi: sd: Optimal I/O size should be a multiple of physical block size
  scsi: MAINTAINERS: SCSI initiator and target tweaks
  scsi: fcoe: make use of fip_mode enum complete
  ...
2019-03-09 16:53:47 -08:00
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
Michael J. Ruhl
bc5add0976 IB/hfi1: Close race condition on user context disable and close
When disabling and removing a receive context, it is possible for an
asynchronous event (i.e IRQ) to occur.  Because of this, there is a race
between cleaning up the context, and the context being used by the
asynchronous event.

cpu 0  (context cleanup)
    rc->ref_count-- (ref_count == 0)
    hfi1_rcd_free()
cpu 1  (IRQ (with rcd index))
	rcd_get_by_index()
	lock
	ref_count+++     <-- reference count race (WARNING)
	return rcd
	unlock
cpu 0
    hfi1_free_ctxtdata() <-- incorrect free location
    lock
    remove rcd from array
    unlock
    free rcd

This race will cause the following WARNING trace:

WARNING: CPU: 0 PID: 175027 at include/linux/kref.h:52 hfi1_rcd_get_by_index+0x84/0xa0 [hfi1]
CPU: 0 PID: 175027 Comm: IMB-MPI1 Kdump: loaded Tainted: G OE ------------ 3.10.0-957.el7.x86_64 #1
Hardware name: Intel Corporation S2600KP/S2600KP, BIOS SE5C610.86B.11.01.0076.C4.111920150602 11/19/2015
Call Trace:
  dump_stack+0x19/0x1b
  __warn+0xd8/0x100
  warn_slowpath_null+0x1d/0x20
  hfi1_rcd_get_by_index+0x84/0xa0 [hfi1]
  is_rcv_urgent_int+0x24/0x90 [hfi1]
  general_interrupt+0x1b6/0x210 [hfi1]
  __handle_irq_event_percpu+0x44/0x1c0
  handle_irq_event_percpu+0x32/0x80
  handle_irq_event+0x3c/0x60
  handle_edge_irq+0x7f/0x150
  handle_irq+0xe4/0x1a0
  do_IRQ+0x4d/0xf0
  common_interrupt+0x162/0x162

The race can also lead to a use after free which could be similar to:

general protection fault: 0000 1 SMP
CPU: 71 PID: 177147 Comm: IMB-MPI1 Kdump: loaded Tainted: G W OE ------------ 3.10.0-957.el7.x86_64 #1
Hardware name: Intel Corporation S2600KP/S2600KP, BIOS SE5C610.86B.11.01.0076.C4.111920150602 11/19/2015
task: ffff9962a8098000 ti: ffff99717a508000 task.ti: ffff99717a508000 __kmalloc+0x94/0x230
Call Trace:
  ? hfi1_user_sdma_process_request+0x9c8/0x1250 [hfi1]
  hfi1_user_sdma_process_request+0x9c8/0x1250 [hfi1]
  hfi1_aio_write+0xba/0x110 [hfi1]
  do_sync_readv_writev+0x7b/0xd0
  do_readv_writev+0xce/0x260
  ? handle_mm_fault+0x39d/0x9b0
  ? pick_next_task_fair+0x5f/0x1b0
  ? sched_clock_cpu+0x85/0xc0
  ? __schedule+0x13a/0x890
  vfs_writev+0x35/0x60
  SyS_writev+0x7f/0x110
  system_call_fastpath+0x22/0x27

Use the appropriate kref API to verify access.

Reorder context cleanup to ensure context removal before cleanup occurs
correctly.

Cc: stable@vger.kernel.org # v4.14.0+
Fixes: f683c80ca6 ("IB/hfi1: Resolve kernel panics by reference counting receive contexts")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-06 14:47:09 -04:00
John Hubbard
0c507d8f84 RDMA/umem: Revert broken 'off by one' fix
The previous attempted bug fix overlooked the fact that
ib_umem_odp_map_dma_single_page() was doing a put_page() upon hitting an
error. So there was not really a bug there.

Therefore, this reverts the off-by-one change, but keeps the change to use
release_pages() in the error path.

Fixes: 75a3e6a3c1 ("RDMA/umem: minor bug fix in error handling path")
Suggested-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-06 14:42:37 -04:00
Anshuman Khandual
98fa15f34c mm: replace all open encodings for NUMA_NO_NODE
Patch series "Replace all open encodings for NUMA_NO_NODE", v3.

All these places for replacement were found by running the following
grep patterns on the entire kernel code.  Please let me know if this
might have missed some instances.  This might also have replaced some
false positives.  I will appreciate suggestions, inputs and review.

1. git grep "nid == -1"
2. git grep "node == -1"
3. git grep "nid = -1"
4. git grep "node = -1"

This patch (of 2):

At present there are multiple places where invalid node number is
encoded as -1.  Even though implicitly understood it is always better to
have macros in there.  Replace these open encodings for an invalid node
number with the global macro NUMA_NO_NODE.  This helps remove NUMA
related assumptions like 'invalid node' from various places redirecting
them to a common definition.

Link: http://lkml.kernel.org/r/1545127933-10711-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>	[ixgbe]
Acked-by: Jens Axboe <axboe@kernel.dk>			[mtip32xx]
Acked-by: Vinod Koul <vkoul@kernel.org>			[dmaengine.c]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>		[powerpc]
Acked-by: Doug Ledford <dledford@redhat.com>		[drivers/infiniband]
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-05 21:07:14 -08:00
John Hubbard
75a3e6a3c1 RDMA/umem: minor bug fix in error handling path
1. Bug fix: fix an off by one error in the code that cleans up if it fails
   to dma-map a page, after having done a get_user_pages_remote() on a
   range of pages.

2. Refinement: for that same cleanup code, release_pages() is better than
   put_page() in a loop.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 16:41:31 -04:00
YueHaibing
4e69cf1fe2 RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
The the below commit, hns_roce_v2_modify_qp is called inside spinlock
while using GFP_KERNEL. Change it to GFP_ATOMIC.

Fixes: 0425e3e6e0 ("RDMA/hns: Support flush cqe for hip08 in kernel space")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 16:41:30 -04:00
Shaobo He
952a3cc9c0 cxgb4: kfree mhp after the debug print
In function `c4iw_dealloc_mw`, variable mhp's value is printed after
freed, it is clearer to have the print before the kfree.

Otherwise racing threads could allocate another mhp with the same pointer
value and create confusing tracing.

Signed-off-by: Shaobo He <shaobo@cs.utah.edu>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 16:41:30 -04:00
Michael J. Ruhl
d757c60eca IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
The RC/UC code path can go through a software loopback. In this code path
the receive side QP is manipulated.

If two threads are working on the QP receive side (i.e. post_send, and
modify_qp to an error state), QP information can be corrupted.

(post_send via loopback)
  set r_sge
  loop
     update r_sge
(modify_qp)
     take r_lock
     update r_sge <---- r_sge is now incorrect
(post_send)
     update r_sge <---- crash, etc.
     ...

This can lead to one of the two following crashes:

 BUG: unable to handle kernel NULL pointer dereference at (null)
  IP:  hfi1_copy_sge+0xf1/0x2e0 [hfi1]
  PGD 8000001fe6a57067 PUD 1fd9e0c067 PMD 0
 Call Trace:
  ruc_loopback+0x49b/0xbc0 [hfi1]
  hfi1_do_send+0x38e/0x3e0 [hfi1]
  _hfi1_do_send+0x1e/0x20 [hfi1]
  process_one_work+0x17f/0x440
  worker_thread+0x126/0x3c0
  kthread+0xd1/0xe0
  ret_from_fork_nospec_begin+0x21/0x21

or:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000048
  IP:  rvt_clear_mr_refs+0x45/0x370 [rdmavt]
  PGD 80000006ae5eb067 PUD ef15d0067 PMD 0
 Call Trace:
  rvt_error_qp+0xaa/0x240 [rdmavt]
  rvt_modify_qp+0x47f/0xaa0 [rdmavt]
  ib_security_modify_qp+0x8f/0x400 [ib_core]
  ib_modify_qp_with_udata+0x44/0x70 [ib_core]
  modify_qp.isra.23+0x1eb/0x2b0 [ib_uverbs]
  ib_uverbs_modify_qp+0xaa/0xf0 [ib_uverbs]
  ib_uverbs_write+0x272/0x430 [ib_uverbs]
  vfs_write+0xc0/0x1f0
  SyS_write+0x7f/0xf0
  system_call_fastpath+0x1c/0x21

Fix by using the appropriate locking on the receiving QP.

Fixes: 1570346153 ("IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt")
Cc: <stable@vger.kernel.org> #v4.9+
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 15:47:23 -04:00
Mike Marciniszyn
38bbc9f038 IB/rdmavt: Fix loopback send with invalidate ordering
The IBTA spec notes:

o9-5.2.1: For any HCA which supports SEND with Invalidate, upon receiving
an IETH, the Invalidate operation must not take place until after the
normal transport header validation checks have been successfully
completed.

The rdmavt loopback code does the validation after the invalidate.

Fix by relocating the operation specific logic for all SEND variants until
after the validity checks.

Cc: <stable@vger.kernel.org> #v4.20+
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 15:47:23 -04:00
Max Gurtovoy
c1545f1a20 IB/iser: Fix dma_nents type definition
The retured value from ib_dma_map_sg saved in dma_nents variable. To avoid
future mismatch between types, define dma_nents as an integer instead of
unsigned.

Fixes: 57b26497fa ("IB/iser: Pass the correct number of entries for dma mapped SGL")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 15:40:25 -04:00
Moni Shoua
7095ec3ca0 IB/mlx5: Set correct write permissions for implicit ODP MR
The write access of an implicit MR is inherited to all of its children.
Therefore we must set the correct write access to the parent MR.

Pass full access_flags when creating umem to let it calculate write access
correctly.

Fixes: da6a496a34 ("IB/mlx5: Ranges in implicit ODP MR inherit its write access")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 10:57:19 -04:00
Devesh Sharma
0fca467e81 bnxt_re: Clean cq for kernel consumers only
Kernel space provider driver should clean the CQs belonging to kernel
space consumers only. The current implementation is doing reverse of it.

Fixing the same by avoiding the call to __clean_cq on a kernel qp during
destroy.

Fixes: c50866e285 ("bnxt_re: fix the regression due to changes in alloc_pbl")
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-04 10:51:14 -04:00
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
bb61845154 RDMA/uverbs: Don't do double free of allocated PD
There is no need to call kfree(pd) because ib_dealloc_pd() internally
frees PD.

Fixes: 21a428a019 ("RDMA: Handle PD allocations by IB/core")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-25 15:00:48 -07:00
David S. Miller
70f3522614 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three conflicts, one of which, for marvell10g.c is non-trivial and
requires some follow-up from Heiner or someone else.

The issue is that Heiner converted the marvell10g driver over to
use the generic c45 code as much as possible.

However, in 'net' a bug fix appeared which makes sure that a new
local mask (MDIO_AN_10GBT_CTRL_ADV_NBT_MASK) with value 0x01e0
is cleared.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-24 12:06:19 -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
Dan Carpenter
afc1990e08 RDMA/core: Fix a WARN() message
The first parameter of WARN_ONCE() is a condition, then following
parameters are the message.  In this case, we left out the condition so it
will just print the ops->type string.

Fixes: 3856ec4b93 ("RDMA/core: Add RDMA_NLDEV_CMD_NEWLINK/DELLINK support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-22 11:53:37 -07:00
Devesh Sharma
c50866e285 bnxt_re: fix the regression due to changes in alloc_pbl
While adding the use of for_each_sg_dma_page iterator for Brodcom's rdma
driver, there was a regression added in the __alloc_pbl path. The change
left bnxt_re in DOA state in for-next branch.

Fixing the regression to avoid the host crash when a user space object is
created. Restricting the unconditional access to hwq.pg_arr when hwq is
initialized for user space objects.

Fixes: 161ebe2498 ("RDMA/bnxt_re: Use for_each_sg_dma_page iterator on umem SGL")
Reported-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-22 11:17:22 -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
Moni Shoua
4438ee3f13 IB/core: Abort page fault handler silently during owning process exit
It is possible that during a page fault handling, the process that owns
the MR is terminating. The indication for it is failure to get the
task_struct or take reference on the mm_struct. In this case just abort
the page-fault handler with error but without a warning to the kernel log.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 16:32:45 -07:00
Moni Shoua
81dd4c4be3 IB/mlx5: Validate correct PD before prefetch MR
When prefetching odp mr it is required to verify that pd of the mr is
identical to the pd for which the advise_mr request arrived with.

This check was missing from synchronous flow and is added now.

Fixes: 813e90b1ae ("IB/mlx5: Add advise_mr() support")
Reported-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 16:32:45 -07:00
Moni Shoua
a6bc3875f1 IB/mlx5: Protect against prefetch of invalid MR
When deferring a prefetch request we need to protect against MR or PD
being destroyed while the request is still enqueued.

The first step is to validate that PD owns the lkey that describes the MR
and that the MR that the lkey refers to is owned by that PD.

The second step is to dequeue all requests when MR is destroyed.

Since PD can't be destroyed while it owns MRs it is guaranteed that when a
worker wakes up the request it refers to is still valid.

Now, it is possible to refrain from taking a reference on the device since
it is assured to be present as pd.

While that, replace the dedicated ordered workqueue with the system
unbound workqueue to reuse an existing resource and improve
performance. This will also fix a bug of queueing to the wrong workqueue.

Fixes: 813e90b1ae ("IB/mlx5: Add advise_mr() support")
Reported-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 16:32:45 -07:00
Leon Romanovsky
25fd08eb2b RDMA/uverbs: Store PR pointer before it is overwritten
The IB_MR_REREG_PD command rewrites mr->pd after successful
rereg_user_mr(), such change causes to lost usecnt information and
produces the following warning:

 WARNING: CPU: 1 PID: 1771 at drivers/infiniband/core/verbs.c:336 ib_dealloc_pd+0x4e/0x60 [ib_core]
 CPU: 1 PID: 1771 Comm: rereg_mr Tainted: G        W  OE 5.0.0-rc7-for-upstream-perf-2019-02-20_14-03-40-34 #1
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
 RIP: 0010:ib_dealloc_pd+0x4e/0x60 [ib_core]
 RSP: 0018:ffffc90003923dc0 EFLAGS: 00010286
 RAX: 00000000ffffffff RBX: ffff88821f7f0400 RCX: ffff888236a40c00
 RDX: ffff88821f7f0400 RSI: 0000000000000001 RDI: 0000000000000000
 RBP: 0000000000000001 R08: ffff88835f665d80 R09: ffff8882209c90d8
 R10: ffff88835ec003e0 R11: 0000000000000000 R12: ffff888221680ba0
 R13: ffff888221680b00 R14: 00000000ffffffea R15: ffff88821f53c318
 FS:  00007f70db11e740(0000) GS:ffff88835f640000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000001dfd030 CR3: 000000029d9d8000 CR4: 00000000000006e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 Call Trace:
  uverbs_free_pd+0x2d/0x30 [ib_uverbs]
  destroy_hw_idr_uobject+0x16/0x40 [ib_uverbs]
  uverbs_destroy_uobject+0x28/0x170 [ib_uverbs]
  __uverbs_cleanup_ufile+0x6b/0x90 [ib_uverbs]
  uverbs_destroy_ufile_hw+0x8b/0x110 [ib_uverbs]
  ib_uverbs_close+0x1f/0x80 [ib_uverbs]
  __fput+0xb1/0x220
  task_work_run+0x7f/0xa0
  exit_to_usermode_loop+0x6b/0xb2
  do_syscall_64+0xc5/0x100
  entry_SYSCALL_64_after_hwframe+0x44/0xa9
 RIP: 0033:0x7f70dad00664

Fixes: e278173fd1 ("RDMA/core: Cosmetic change - move member initialization to correct block")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 14:09:23 -07:00
Gustavo A. R. Silva
7264235ee7 IB/hfi1: Add missing break in switch statement
Fix the following warning by adding a missing break:

drivers/infiniband/hw/hfi1/tid_rdma.c: In function ‘hfi1_tid_rdma_wqe_interlock’:
drivers/infiniband/hw/hfi1/tid_rdma.c:3251:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   switch (prev->wr.opcode) {
   ^~~~~~
drivers/infiniband/hw/hfi1/tid_rdma.c:3259:2: note: here
  case IB_WR_RDMA_READ:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Fixes: c6c231175c ("IB/hfi1: Add interlock between TID RDMA WRITE and other requests")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kaike Wan <Kaike.wan@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 14:08:12 -07:00
Jason Gunthorpe
815f748037 Merge branch 'mlx5-next' into rdma.git for-next
From
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

To resolve conflicts with net-next and pick up the first patch.

* branch 'mlx5-next':
  net/mlx5: Factor out HCA capabilities functions
  IB/mlx5: Add support for 50Gbps per lane link modes
  net/mlx5: Add support to ext_* fields introduced in Port Type and Speed register
  net/mlx5: Add new fields to Port Type and Speed register
  net/mlx5: Refactor queries to speed fields in Port Type and Speed register
  net/mlx5: E-Switch, Avoid magic numbers when initializing offloads mode
  net/mlx5: Relocate vport macros to the vport header file
  net/mlx5: E-Switch, Normalize the name of uplink vport number
  net/mlx5: Provide an alternative VF upper bound for ECPF
  net/mlx5: Add host params change event
  net/mlx5: Add query host params command
  net/mlx5: Update enable HCA dependency
  net/mlx5: Introduce Mellanox SmartNIC and modify page management logic
  IB/mlx5: Use unified register/load function for uplink and VF vports
  net/mlx5: Use consistent vport num argument type
  net/mlx5: Use void pointer as the type in address_of macro
  net/mlx5: Align ODP capability function with netdev coding style
  mlx5: use RCU lock in mlx5_eq_cq_get()

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-21 12:40:18 -07:00
Davidlohr Bueso
ec95e0fa21 drivers/IB,qib: Fix pinned/locked limit check in qib_get_user_pages()
The current check does not take into account the previous value of
pinned_vm; thus it is quite bogus as is. Fix this by checking the
new value after the (optimistic) atomic inc.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-20 14:42:41 -07:00
Noa Osherovich
d0e02bf6cd RDMA/core: Verify that memory window type is legal
Before calling the provider's alloc_mw function, verify that the
given memory type is either IB_MW_TYPE_1 or IB_MW_TYPE_2.

Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Leon Romanovsky
1882ab8678 RDMA/iwcm: Fix string truncation error
The strlen() check at the beginning of iw_cm_map() ensures that devname
and ifname strings are less than destinations to which they are supposed
to be copied. Change strncpy() call to be strcpy(), because we are
protected from overflow. Zero the entire string buffer to avoid copying
uninitialized kernel stack memory to userspace.

This fixes the compilation warning below:

In file included from ./include/linux/dma-mapping.h:6,
                 from drivers/infiniband/core/iwcm.c:38:
In function _strncpy_,
    inlined from _iw_cm_map_ at drivers/infiniband/core/iwcm.c:519:2:
./include/linux/string.h:253:9: warning: ___builtin_strncpy_ specified
bound 32 equals destination size [-Wstringop-truncation]
  return __builtin_strncpy(p, q, size);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: d53ec8af56 ("RDMA/iwcm: Don't copy past the end of dev_name() string")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Yuval Shaia
e278173fd1 RDMA/core: Cosmetic change - move member initialization to correct block
old_pd is used only if IB_MR_REREG_PD flags is set.
For readability move it's initialization to where it is used.

While there rewrite the whole 'if-else' block so on error jump directly
to label and no need for 'else'

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Wei Yongjun
3b8f8b95d9 iw_cxgb4: Make function read_tcb() static
Fixes the following sparse warning:

drivers/infiniband/hw/cxgb4/cm.c:658:6: warning:
 symbol 'read_tcb' was not declared. Should it be static?

Fixes: 11a27e2121 ("iw_cxgb4: complete the cached SRQ buffers")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Yangyang Li
6ac16e4039 RDMA/hns: Bugfix for set hem of SCC
The method of set hem for scc context is different from other contexts. It
should notify the hardware with the detailed idx in bt0 for scc, while for
other contexts, it only need to notify the bt step and the hardware will
calculate the idx.

Here fixes the following error when unloading the hip08 driver:

[  123.570768] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[  123.579023] {1}[Hardware Error]: event severity: recoverable
[  123.584670] {1}[Hardware Error]:  Error 0, type: recoverable
[  123.590317] {1}[Hardware Error]:   section_type: PCIe error
[  123.595877] {1}[Hardware Error]:   version: 4.0
[  123.600395] {1}[Hardware Error]:   command: 0x0006, status: 0x0010
[  123.606562] {1}[Hardware Error]:   device_id: 0000:7d:00.0
[  123.612034] {1}[Hardware Error]:   slot: 0
[  123.616120] {1}[Hardware Error]:   secondary_bus: 0x00
[  123.621245] {1}[Hardware Error]:   vendor_id: 0x19e5, device_id: 0xa222
[  123.627847] {1}[Hardware Error]:   class_code: 000002
[  123.632977] hns3 0000:7d:00.0: aer_status: 0x00000000, aer_mask: 0x00000000
[  123.639928] hns3 0000:7d:00.0: aer_layer=Transaction Layer, aer_agent=Receiver ID
[  123.647400] hns3 0000:7d:00.0: aer_uncor_severity: 0x00000000
[  123.653136] hns3 0000:7d:00.0: PCI error detected, state(=1)!!
[  123.658959] hns3 0000:7d:00.0: ROCEE uncorrected RAS error identified
[  123.665395] hns3 0000:7d:00.0: ROCEE RAS AXI rresp error
[  123.670713] hns3 0000:7d:00.0: requesting reset due to PCI error
[  123.676715] hns3 0000:7d:00.0: received reset event , reset type is 5
[  123.683147] hns3 0000:7d:00.0: AER: Device recovery successful
[  123.688978] hns3 0000:7d:00.0: PF Reset requested
[  123.693684] hns3 0000:7d:00.0: PF failed(=-5) to send mailbox message to VF
[  123.700633] hns3 0000:7d:00.0: inform reset to vf(1) failded -5!

Fixes: 6a157f7d1b ("RDMA/hns: Add SCC context allocation support for hip08")
Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Reviewed-by: Yixian Liu <liuyixian@huawei.com>
Reviewed-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Lijun Ou
3e394f9413 RDMA/hns: Modify qp&cq&pd specification according to UM
Accroding to hip08's limitation, qp&cq specification is 1M, mtpt
specification 1M in kernel space.

Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Steve Wise
66920e1b25 rdma_rxe: Use netlink messages to add/delete links
Add support for the RDMA_NLDEV_CMD_NEWLINK/DELLINK messages which allow
dynamically adding new RXE links.  Deprecate the old module options for
now.

Cc: Moni Shoua <monis@mellanox.com>
Reviewed-by: Yanjun Zhu <yanjun.zhu@oracle.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Steve Wise
3856ec4b93 RDMA/core: Add RDMA_NLDEV_CMD_NEWLINK/DELLINK support
Add support for new LINK messages to allow adding and deleting rdma
interfaces.  This will be used initially for soft rdma drivers which
instantiate device instances dynamically by the admin specifying a netdev
device to use.  The rdma_rxe module will be the first user of these
messages.

The design is modeled after RTNL_NEWLINK/DELLINK: rdma drivers register
with the rdma core if they provide link add/delete functions.  Each driver
registers with a unique "type" string, that is used to dispatch messages
coming from user space.  A new RDMA_NLDEV_ATTR is defined for the "type"
string.  User mode will pass 3 attributes in a NEWLINK message:
RDMA_NLDEV_ATTR_DEV_NAME for the desired rdma device name to be created,
RDMA_NLDEV_ATTR_LINK_TYPE for the "type" of link being added, and
RDMA_NLDEV_ATTR_NDEV_NAME for the net_device interface to use for this
link.  The DELLINK message will contain the RDMA_NLDEV_ATTR_DEV_INDEX of
the device to delete.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Parvi Kaustubhi
5bb3c1e9d4 IB/usnic: Fix deadlock
There is a dead lock in usnic ib_register and netdev_notify path.

	usnic_ib_discover_pf()
	| mutex_lock(&usnic_ib_ibdev_list_lock);
	 | usnic_ib_device_add();
	  | ib_register_device()
	   | usnic_ib_query_port()
	    | mutex_lock(&us_ibdev->usdev_lock);
	     | ib_get_eth_speed()
	      | rtnl_lock()

order of lock: &usnic_ib_ibdev_list_lock -> usdev_lock -> rtnl_lock

	rtnl_lock()
	 | usnic_ib_netdevice_event()
	  | mutex_lock(&usnic_ib_ibdev_list_lock);

order of lock: rtnl_lock -> &usnic_ib_ibdev_list_lock

Solution is to use the core's lock-free ib_device_get_by_netdev() scheme
to lookup ib_dev while handling netdev & inet events.

Signed-off-by: Parvi Kaustubhi <pkaustub@cisco.com>
Reviewed-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Reviewed-by: Tanmay Inamdar <tinamdar@cisco.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:19 -07:00
Jason Gunthorpe
ca22354b14 RDMA/rxe: Close a race after ib_register_device
Since rxe allows unregistration from other threads the rxe pointer can
become invalid any moment after ib_register_driver returns. This could
cause a user triggered use after free.

Add another driver callback to be called right after the device becomes
registered to complete any device setup required post-registration.  This
callback has enough core locking to prevent the device from becoming
unregistered.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
6cc2c8e535 RDMA/rxe: Add ib_device_get_by_name() and use it in rxe
rxe has an open coded version of this that is not as safe as the core
version. This lets us eliminate the internal device list entirely from
rxe.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
c367074b6c RDMA/rxe: Use driver_unregister and new unregistration API
rxe does not have correct locking for its registration/unregistration
paths, use the core code to handle it instead. In this mode
ib_unregister_device will also do the dealloc, so rxe is required to do
clean up from a callback.

The core code ensures that unregistration is done only once, and generally
takes care of locking and concurrency problems for rxe.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
d0899892ed RDMA/device: Provide APIs from the core code to help unregistration
These APIs are intended to support drivers that exist outside the usual
driver core probe()/remove() callbacks. Normally the driver core will
prevent remove() from running concurrently with probe(), once this safety
is lost drivers need more support to get the locking and lifetimes right.

ib_unregister_driver() is intended to be used during module_exit of a
driver using these APIs. It unregisters all the associated ib_devices.

ib_unregister_device_and_put() is to be used by a driver-specific removal
function (ie removal by name, removal from a netdev notifier, removal from
netlink)

ib_unregister_queued() is to be used from netdev notifier chains where
RTNL is held.

The locking is tricky here since once things become async it is possible
to race unregister with registration. This is largely solved by relying on
the registration refcount, unregistration will only ever work on something
that has a positive registration refcount - and then an unregistration
mutex serializes all competing unregistrations of the same device.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
4c173f596b RDMA/rxe: Use ib_device_get_by_netdev() instead of open coding
The core API handles the locking correctly and is faster if there are
multiple devices.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
324e227ea7 RDMA/device: Add ib_device_get_by_netdev()
Several drivers need to find the ib_device from a given netdev. rxe needs
this at speed in an unsleepable context, so choose to implement the
translation using a RCU safe hash table.

The hash table can have a many to one mapping. This is intended to support
some future case where multiple IB drivers (ie iWarp and RoCE) connect to
the same netdevs. driver_ids will need to be different to support this.

In the process this makes the struct ib_device and ib_port_data RCU safe
by deferring their kfrees.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
c2261dd76b RDMA/device: Add ib_device_set_netdev() as an alternative to get_netdev
The associated netdev should not actually be very dynamic, so for most
drivers there is no reason for a callback like this. Provide an API to
inform the core code about the net dev affiliation and use a core
maintained data structure instead.

This allows the core code to be more aware of the ndev relationship which
will allow some new APIs based around this.

This also uses locking that makes some kind of sense, many drivers had a
confusing RCU lock, or missing locking which isn't right.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 20:52:18 -07:00
Jason Gunthorpe
8faea9fd4a RDMA/cache: Move the cache per-port data into the main ib_port_data
Like the other cases there no real reason to have another array just for
the cache. This larger conversion gets its own patch.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Jason Gunthorpe
8ceb1357b3 RDMA/device: Consolidate ib_device per_port data into one place
There is no reason to have three allocations of per-port data. Combine
them together and make the lifetime for all the per-port data match the
struct ib_device.

Following patches will require more port-specific data, now there is a
good place to put it.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Jason Gunthorpe
ea1075edcb RDMA: Add and use rdma_for_each_port
We have many loops iterating over all of the end port numbers on a struct
ib_device, simplify them with a for_each helper.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Leon Romanovsky
f2a0e45f36 RDMA/nldev: Don't expose number of not-visible entries
Netlink dumpit handshake exchanges the index from which kernel should
start to return its value, in current code, this index included
not-visible in this PID items too and indirectly revealed the number of
entries.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Leon Romanovsky
1b8b778864 RDMA/nldev: Connect QP number to .doit callback
This patch adds ability to query specific QP based on its LQPN (local
QPN), which is assigned by HW and needs special treatment while inserting
into restrack DB.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Leon Romanovsky
c3d02788b4 RDMA/nldev: Provide parent IDs for PD, MR and QP objects
PD, MR and QP objects have parents objects: contexts and PDs.  The exposed
parent IDs allow to correlate various objects and simplify debug
investigation.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Leon Romanovsky
517b773e0f RDMA/nldev: Share with user-space object IDs
Give to the user space tools unique identifier for PD, MR, CQ and CM_ID
objects, so they can be able to query on them with .doit callbacks.

QP .doit is not supported yet, till all drivers will be updated to provide
their LQPN to be equal to their restrack ID.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:39 -07:00
Leon Romanovsky
7c77c6a9bf RDMA/restrack: Prepare restrack_root to addition of extra fields per-type
As a preparation to extension of rdma_restrack_root to provide software
IDs, which will be per-type too. We convert the rdma_restrack_root from
struct with arrays to array of structs.

Such conversion allows us to drop rwsem lock in favour of internal XArray
lock.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19 10:13:38 -07:00
Leon Romanovsky
41eda65c61 RDMA/restrack: Hide restrack DB from IB/core
There is no need to expose internals of restrack DB to IB/core.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00
Leon Romanovsky
4811852718 RDMA/restrack: Reduce scope of synchronization lock while updating DB
XArray uses internal lock for updates to XArray. This means that our
external RW lock is needed to ensure that entry is not deleted while we
are performing iteration over list.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00
Leon Romanovsky
c5dfe0ea6f RDMA/nldev: Add resource tracker doit callback
Implement doit callbacks and ensure that users won't provide port values
on resource entry allocated in per-device mode needed for .doit callback.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00
Leon Romanovsky
18c4c66f76 RDMA/restrack: Translate from ID to restrack object
Add new general helper to get restrack entry given by ID and their
respective type.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00
Leon Romanovsky
fd47c2f99f RDMA/restrack: Convert internal DB from hash to XArray
The additions of .doit callbacks posses new access pattern to the resource
entries by some user visible index. Back then, the legacy DB was
implemented as hash because per-index access wasn't needed and XArray
wasn't accepted yet.

Acceptance of XArray together with per-index access requires the refresh
of DB implementation.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00
Parav Pandit
5f8f549900 RDMA/core: Move device addition deletion to device.c
Move core device addition and removal from sysfs.c to device.c as device.c
is more appropriate place for device management.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 21:57:14 -07:00
Parav Pandit
5767198a14 RDMA/core: Introduce and use ib_setup_port_attrs()
Refactor code for device and port sysfs attributes for reuse.

While at it, rename counter part free function to ib_free_port_attrs.

Also attribute setup sequence is:
(a) port specific init.
(b) device stats alloc/init.

So for cleanup, follow reverse sequence:
(a) device stats dealloc
(b) port specific cleanup

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 21:52:17 -07:00
Parav Pandit
e155755e53 RDMA/core: Use simpler device_del() instead of device_unregister()
Instead of holding extra reference using get_device() that
device_unregister() releases, simplify it as below.

device_add() balances with device_del().  device_initialize() balances
with put_device(), always via ib_dealloc_device().

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 21:42:02 -07:00
Leon Romanovsky
cfe876d8e6 RDMA/cxgb4: Remove kref accounting for sync operation
Ucontext allocation and release aren't async events and don't need kref
accounting. The common layer of RDMA subsystem ensures that dealloc
ucontext will be called after all other objects are released.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 21:39:15 -07:00
Leon Romanovsky
be56b07b4f RDMA/nes: Remove useless usecnt variable and redundant memset
The internal design of RDMA/core ensures that there dealloc ucontext will
be called only if alloc_ucontext succeeded, hence there is no need to
manage internal variable to mark validity of ucontext.

As part of this change, remove redundant memeset too.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 21:39:15 -07:00
Bodong Wang
f8e8fa0262 net/mlx5: E-Switch, Centralize repersentor reg/unreg to eswitch driver
Eswitch has two users: IB and ETH. They both register repersentors
when mlx5 interface is added, and unregister the repersentors when
mlx5 interface is removed. Ideally, each driver should only deal with
the entities which are unique to itself. However, current IB and ETH
drivers have to perform the following eswitch operations:

1. When registering, specify how many vports to register. This number
   is the same for both drivers which is the total available vport
   numbers.
2. When unregistering, specify the number of registered vports to do
   unregister. Also, unload the repersentors which are already loaded.

It's unnecessary for eswitch driver to hands out the control of above
operations to individual driver users, as they're not unique to each
driver. Instead, such operations should be centralized to eswitch
driver. This consolidates eswitch control flow, and simplified IB and
ETH driver.

This patch doesn't change any functionality.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-15 17:25:58 -08:00
Saeed Mahameed
259fae5a2c Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Merge mlx5-next shared branched into net-next,

From Bodong Wang:
1) Introduction of ECPF (Embedded CPU Physical Function), and low level
bits for mlx5 SmartNic capabilities support.
2) Vport enumeration refactoring that affect mlx5_ib and mlx5_core

From Aya Levin,
3) Add support for 50Gbps per lane link modes in the Port Type and Speed
register (PTYS)
4) Refactor low level query functions for PTYS register
5) Add support for 50Gbps per lane link modes to mlx5_ib

Note: due to a change in API in mlx5/core and a later patch from net-next,
a fixup was squashed with this merge commit that replaces FDB_UPLINK_VPORT
with MLX5_VPORT_UPLINK which exists only in upstream net-next.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-15 16:45:31 -08:00
Kaike Wan
e50838c27f IB/hfi1: Fix a build warning for TID RDMA READ
The following build warning was produced for the TID RDMA READ
patch ("IB/hfi1: Enable TID RDMA READ protocol"):

drivers/infiniband/hw/hfi1/qp.c: In function 'hfi1_setup_wqe':
drivers/infiniband/hw/hfi1/qp.c:328:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
   hfi1_setup_tid_rdma_wqe(qp, wqe);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/hw/hfi1/qp.c:329:2: note: here
  case IB_QPT_UC:
  ^~~~

This patch will fix the issue by adding the "fall through" comment.

Fixes: f1ab4efa6d ("IB/hfi1: Enable TID RDMA READ protocol")
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>
2019-02-15 15:55:50 -07:00
Jason Gunthorpe
9a7786784d RDMA/uverbs: Fix an error flow in ib_uverbs_poll_cq
The new output_written block was wrongly placed before the ret=0, causing
the error code to be lost. uverbs_output_written is not expected to fail,
and even if it does fail it has no significant impact on the userspace
flow.

Reported-by: Bart Van Assche <bvanassche@acm.org>
Fixes: d6f4a21f30 ("RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
2019-02-15 15:54:46 -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
Shamir Rabinovitch
3d9dfd0603 IB/uverbs: Add ib_ucontext to uverbs_attr_bundle sent from ioctl and cmd flows
Add ib_ucontext to the uverbs_attr_bundle sent down the iocl and cmd flows
as soon as the flow has ib_uobject.

In addition, remove rdma_get_ucontext helper function that is only used by
ib_umem_get.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 11:16:21 -07:00
Raju Rangoju
f09ef134a7 iw_cxgb4: cq/qp mask depends on bar2 pages in a host page
Adjust the cq/qp mask based on the number of bar2 pages in a host page.

For user-mode rdma, the granularity of the BAR2 memory mapped to a user
rdma process during queue allocation must be based on the host page
size. The lld attributes udb_density and ucq_density are used to figure
out how many sge contexts are in a bar2 page. So the rdev->qpmask and
rdev->cqmask in iw_cxgb4 need to now be adjusted based on how many sge
bar2 pages are in a host page.

Otherwise the device fails to work on non 4k page size systems.

Fixes: 2391b0030e ("cxgb4: Remove SGE_HOST_PAGE_SIZE dependency on page size")
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15 09:39:39 -07:00
Erez Alfasi
0dd9ce18b9 IB/ipoib: Use __func__ instead of function's name
Changed debug statements to use %s and __func__ instead
of hard-coded function's name.

Signed-off-by: Erez Alfasi <ereza@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 14:48:58 -07:00
YueHaibing
36f0a1ccb3 RDMA/iwpm: Remove set but not used variable 'msg_seq'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/infiniband/core/iwpm_util.c: In function 'iwpm_send_hello':
drivers/infiniband/core/iwpm_util.c:811:6: warning:
 variable 'msg_seq' set but not used [-Wunused-but-set-variable]

It never used since introduction in commit b0bad9ad51 ("RDMA/IWPM:
Support no port mapping requirements")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 14:47:39 -07:00
Lijun Ou
dad1f9802e RDMA/hns: Configure capacity of hns device
This patch adds new device capability for IB_DEVICE_MEM_MGT_EXTENSIONS to
indicate device support for the following features:

1. Fast register memory region.
2. send with remote invalidate by frmr
3. local invalidate memory regsion

As well as adds the max depth of frmr page list len.

Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 13:20:19 -07:00
Yixian Liu
e95c716c7f RDMA/hns: Delete useful prints for aeq subtype event
Current all messages printed for aeq subtype event are wrong.  Thus,
delete them and only the value of subtype event is printed.

Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 13:20:19 -07:00
Yixian Liu
f7f27a5f03 RDMA/hns: Set allocated memory to zero for wrid
The memory allocated for wrid should be initialized to zero.

Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 13:20:19 -07:00
Yixian Liu
ab22bf0521 RDMA/hns: Fix the state of rereg mr
The state of mr after reregister operation should be set to valid
state. Otherwise, it will keep the same as the state before reregistered.

Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 13:20:18 -07:00
chenglang
704e0e613a RDMA/hns: Limit minimum ROCE CQ depth to 64
This patch modifies the minimum CQ depth specification of hip08 and is
consistent with the processing of hip06.

Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-14 13:20:18 -07:00
Aya Levin
08e8676f16 IB/mlx5: Add support for 50Gbps per lane link modes
Driver now supports new link modes: 50Gbps per lane support for
50G/100G/200G. This patch reads the correct field (legacy vs. extended)
based on a FW indication bit, and adds a translation function (link
modes to IB width and speed) to the new link modes.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-14 12:14:42 -08:00
Aya Levin
a08b4ed137 net/mlx5: Add support to ext_* fields introduced in Port Type and Speed register
This patch exposes new link modes (including 50Gbps per lane), and ext_*
fields which describes the new link modes in Port Type and Speed
register (PTYS).
Access functions, translation functions (speed <-> HW bits) and
link max speed function were modified.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-14 12:14:42 -08:00
Aya Levin
bc4e12ffef net/mlx5: Refactor queries to speed fields in Port Type and Speed register
This patch fascicles queries to speed related fields in Port Type and
Speed register (PTYS) into a single API. I addition, this patch
refactors functions which serves only Ethernet driver: remove the
protocol type as an input parameter, move code from 'core' directory
into 'en' directory and add 'eth' prefix to the function's name. The
patch also encapsulates functions that are not used outside the Ethernet
driver removes redundant include files.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-14 12:14:42 -08:00
Bodong Wang
b05af6aacd net/mlx5: E-Switch, Normalize the name of uplink vport number
Driver used to name uplink vport as FDB_UPLINK_VPORT, it's hard to
comply with the same naming convention along with the introduction of
other vports. Use MLX5_VPORT as the prefix for such vports and
relocate the uplink vport definition to public header file for the
benefits of both net and IB drivers.

This patch doesn't change any functionality.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-14 12:14:42 -08:00
Bodong Wang
f0666f1f22 IB/mlx5: Use unified register/load function for uplink and VF vports
IB driver maintains different registration and load function calls
for uplink and VF vports. This is not necessary as they only differ
with each other on their profiles.

This patch doesn't change any functionality.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-14 12:14:41 -08:00
Shiraz, Saleem
52a572e9f7 RDMA/nes: Use for_each_sg_dma_page iterator for umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-13 09:00:43 -07:00
Shiraz, Saleem
36d577089d RDMA/rdmavt: Adapt to handle non-uniform sizes on umem SGEs
rdmavt expects a uniform size on all umem SGEs which is currently at
PAGE_SIZE.

Adapt to a umem API change which could return non-uniform sized SGEs due
to combining contiguous PAGE_SIZE regions into an SGE. Use
for_each_sg_page variant to unfold the larger SGEs into a list of
PAGE_SIZE elements.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-13 09:00:43 -07:00
Colin Ian King
e8ac9389f0 RDMA: Fix allocation failure on pointer pd
The null check on an allocation failure on pd is currently checking
if pd is non-null rather than null. Fix this by adding the missing !
operator.

Fixes: 21a428a019 ("RDMA: Handle PD allocations by IB/core")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-13 09:00:43 -07:00
Doug Ledford
d892273bb5 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma into for-next
I had merged the hfi1-tid code into my local copy of for-next, but was
waiting on 0day testing before pushing it (I pushed it to my wip
branch).  Having waited several days for 0day testing to show up, I'm
finally just going to push it out.  In the meantime, though, Jason
pushed other stuff to for-next, so I needed to merge up the branches
before pushing.

Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-02-13 09:35:39 -05:00
Colin Ian King
a87145957e RDMA/bnxt_re: fix or'ing of data into an uninitialized struct member
The struct member comp_mask has not been initialized however a bit
pattern is being bitwise or'd into the member and hence other bit
fields in comp_mask may contain any garbage from the stack. Fix this
by making the bitwise or into an assignment.

Fixes: 95b86d1c91 ("RDMA/bnxt_re: Update kernel user abi to pass chip context")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:34:54 -07:00
Mark Bloch
fc9e4477f9 RDMA/mlx5: Fix memory leak in case we fail to add an IB device
Make sure the IB device is freed on failure.

Fixes: b5ca15ad7e ("IB/mlx5: Add proper representors support")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:32:29 -07:00
Yishai Hadas
0da4d48d99 IB/mlx5: Fix bad flow upon DEVX mkey creation
Fix bad flow upon DEVX mkey creation to prevent deleting the indirect mkey
from the radix tree in case there was a previous failure to insert it.

Fixes: 534fd7aac5 ("IB/mlx5: Manage indirection mkey upon DEVX flow for ODP")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:30:40 -07:00
Shiraz, Saleem
8317d6cdc1 RDMA/rxe: Use for_each_sg_page iterator on umem SGL
The driver walks the umem SGL assuming a 1:1 mapping between SGE and
system page. Update to use the for_each_sg_page iterator to get individual
pages contained in the SGEs.  This is a pre-requisite before adding page
combining into SGEs while building the scatter table in IB core.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
be8c456abf RDMA/ocrdma: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
95ad233ffb RDMA/qedr: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
f3e6d31179 RDMA/vmw_pvrdma: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
b44e47eb06 RDMA/cxgb3: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
48b586ac36 RDMA/cxgb4: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:24:55 -07:00
Shiraz, Saleem
3856ec5527 RDMA/hns: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:02:33 -07:00
Shiraz, Saleem
43fae91276 RDMA/i40iw: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:02:33 -07:00
Shiraz, Saleem
8d249af3e6 RDMA/mthca: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:02:33 -07:00
Shiraz, Saleem
161ebe2498 RDMA/bnxt_re: Use for_each_sg_dma_page iterator on umem SGL
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-11 15:02:33 -07:00
Doug Ledford
82771f2033 Merge branch 'wip/dl-for-next' into for-next
Due to concurrent work by myself and Jason, a normal fast forward merge
was not possible.  This brings in a number of hfi1 changes, mainly the
hfi1 TID RDMA support (roughly 10,000 LOC change), which was reviewed
and integrated over a period of days.

Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-02-09 12:54:04 -05:00
Raju Rangoju
f368ff188a iw_cxgb4: fix srqidx leak during connection abort
When an application aborts the connection by moving QP from RTS to ERROR,
then iw_cxgb4's modify_rc_qp() RTS->ERROR logic sets the
*srqidxp to 0 via t4_set_wq_in_error(&qhp->wq, 0), and aborts the
connection by calling c4iw_ep_disconnect().

c4iw_ep_disconnect() does the following:
 1. sends up a close_complete_upcall(ep, -ECONNRESET) to libcxgb4.
 2. sends abort request CPL to hw.

But, since the close_complete_upcall() is sent before sending the
ABORT_REQ to hw, libcxgb4 would fail to release the srqidx if the
connection holds one. Because, the srqidx is passed up to libcxgb4 only
after corresponding ABORT_RPL is processed by kernel in abort_rpl().

This patch handle the corner-case by moving the call to
close_complete_upcall() from c4iw_ep_disconnect() to abort_rpl().  So that
libcxgb4 is notified about the -ECONNRESET only after abort_rpl(), and
libcxgb4 can relinquish the srqidx properly.

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 17:02:05 -07:00
Raju Rangoju
11a27e2121 iw_cxgb4: complete the cached SRQ buffers
If TP fetches an SRQ buffer but ends up not using it before the connection
is aborted, then it passes the index of that SRQ buffer to the host in
ABORT_REQ_RSS or ABORT_RPL CPL message.

But, if the srqidx field is zero in the received ABORT_RPL or
ABORT_REQ_RSS CPL, then we need to read the tcb.rq_start field to see if
it really did have an RQE cached. This works around a case where HW does
not include the srqidx in the ABORT_RPL/ABORT_REQ_RSS CPL.

The final value of rq_start is the one present in TCB with the
TF_RX_PDU_OUT bit cleared. So, we need to read the TCB, examine the
TF_RX_PDU_OUT (bit 49 of t_flags) in order to determine if there's a rx
PDU feedback event pending.

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 17:02:05 -07:00
Jason Gunthorpe
921eab1143 RDMA/devices: Re-organize device.c locking
The locking here started out with a single lock that covered everything
and then has lately veered into crazy town.

The fundamental problem is that several places need to iterate over a
linked list, but also need to drop their locks to avoid deadlock during
client callbacks.

xarray's restartable iteration offers a simple solution to the
problem. Once all the lists are xarrays we can drop locks in the places
that need that and rely on xarray to provide consistency and locking for
the data structure.

The resulting simplification is that each of the three lists has a
dedicated rwsem that must be held when working with the list it
covers. One data structure is no longer covered by multiple locks.

The sleeping semaphore is selected because the read side generally needs
to be held over something sleeping, and using RCU reader locking in those
cases is overkill.

In the process this simplifies the entire registration/unregistration flow
to be the expected list of setups and the reversed list of matching
teardowns, and the registration lock 'refcount' can now be revised to be
released after the ULPs are removed, providing a very sane semantic for
this feature.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
0df91bb673 RDMA/devices: Use xarray to store the client_data
Now that we have a small ID for each client we can use xarray instead of
linearly searching linked lists for client data. This will give much
faster and scalable client data lookup, and will lets us revise the
locking scheme.

Since xarray can store 'going_down' using a mark just entirely eliminate
the struct ib_client_data and directly store the client_data value in the
xarray. However this does require a special iterator as we must still
iterate over any NULL client_data values.

Also eliminate the client_data_lock in favour of internal xarray locking.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
e59178d895 RDMA/devices: Use xarray to store the clients
This gives each client a unique ID and will let us move client_data to use
xarray, and revise the locking scheme.

clients have to be add/removed in strict FIFO/LIFO order as they
interdepend. To support this the client_ids are assigned to increase in
FIFO order. The existing linked list is kept to support reverse iteration
until xarray can get a reverse iteration API.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
3b88afd38e RDMA/device: Use an ida instead of a free page in alloc_name
ida is the proper data structure to hold list of clustered small integers
and then allocate an unused integer. Get rid of the convoluted and limited
open-coded bitmap.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
652432f33c RDMA/device: Get rid of reg_state
This really has no purpose anymore, refcount can be used to tell if the
device is still registered. Keeping it around just invites mis-use.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
d45f89d59b RDMA/device: Call ib_cache_release_one() only from ib_device_release()
Instead of complicated logic about when this memory is freed, always free
it during device release(). All the cache pointers start out as NULL, so
it is safe to call this before the cache is initialized.

This makes for a simpler error unwind flow, and a simpler understanding of
the lifetime of the memory allocations inside the struct ib_device.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
b34b269ad8 RDMA/device: Ensure that security memory is always freed
Since this only frees memory it should be done during the release
callback. Otherwise there are possible error flows where it might not get
called if registration aborts.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:56:45 -07:00
Jason Gunthorpe
e3593b568a RDMA/device: Check that the rename is nop under the lock
Since another rename could be running in parallel it is safer to check
that the name is not changing inside the lock, where we already know the
device name will not change.

Fixes: d21943dd19 ("RDMA/core: Implement IB device rename function")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-02-08 16:56:45 -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
Leon Romanovsky
30471d4b20 RDMA/core: Share driver structure size with core
Add new macros to be used in drivers while registering ops structure and
IB/core while calling allocation routines, so drivers won't need to
perform kzalloc/kfree in their paths.

The change in allocation stage allows us to initialize common fields prior
to calling to drivers (e.g. restrack).

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:50:58 -07:00
Daniel Jurgens
c66f67414c IB/core: Don't register each MAD agent for LSM notifier
When creating many MAD agents in a short period of time, receive packet
processing can be delayed long enough to cause timeouts while new agents
are being added to the atomic notifier chain with IRQs disabled.  Notifier
chain registration and unregstration is an O(n) operation. With large
numbers of MAD agents being created and destroyed simultaneously the CPUs
spend too much time with interrupts disabled.

Instead of each MAD agent registering for it's own LSM notification,
maintain a list of agents internally and register once, this registration
already existed for handling the PKeys. This list is write mostly, so a
normal spin lock is used vs a read/write lock. All MAD agents must be
checked, so a single list is used instead of breaking them down per
device.

Notifier calls are done under rcu_read_lock, so there isn't a risk of
similar packet timeouts while checking the MAD agents security settings
when notified.

Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:24:44 -07:00
Daniel Jurgens
6e88e672b6 IB/core: Fix potential memory leak while creating MAD agents
If the MAD agents isn't allowed to manage the subnet, or fails to register
for the LSM notifier, the security context is leaked. Free the context in
these cases.

Fixes: 47a2b338fe ("IB/core: Enforce security on management datagrams")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Reported-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08 16:24:44 -07:00