We only have one bug to submit this time around. It fixes a DMA unmap
issue where we unmapped the DMA address from the IOMMU before we did
from the card, resulting in a DMAR error with IOMMU enabled, or possible
crash without.
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Merge tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Doug writes:
"RDMA fixes:
Final for-rc pull request for 4.19
We only have one bug to submit this time around. It fixes a DMA
unmap issue where we unmapped the DMA address from the IOMMU before
we did from the card, resulting in a DMAR error with IOMMU enabled,
or possible crash without."
* tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/mlx5: Unmap DMA addr from HCA before IOMMU
- Fix a long standing race bug when destroying comp_event file descriptors
- srp, hfi1, bnxt_re: Various driver crashes from missing validation and
other cases
- Fixes for regressions in patches merged this window in the gid cache,
devx, ucma and uapi.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Jason writes:
"Second RDMA rc pull request
- Fix a long standing race bug when destroying comp_event file descriptors
- srp, hfi1, bnxt_re: Various driver crashes from missing validation
and other cases
- Fixes for regressions in patches merged this window in the gid
cache, devx, ucma and uapi."
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/core: Set right entry state before releasing reference
IB/mlx5: Destroy the DEVX object upon error flow
IB/uverbs: Free uapi on destroy
RDMA/bnxt_re: Fix system crash during RDMA resource initialization
IB/hfi1: Fix destroy_qp hang after a link down
IB/hfi1: Fix context recovery when PBC has an UnsupportedVL
IB/hfi1: Invalid user input can result in crash
IB/hfi1: Fix SL array bounds check
RDMA/uverbs: Fix validity check for modify QP
IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop
ucma: fix a use-after-free in ucma_resolve_ip()
RDMA/uverbs: Atomically flush and mark closed the comp event queue
cxgb4: fix abort_req_rss6 struct
Upon DEVX object creation the object must be destroyed upon a follows
error flow.
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>
rvt_destroy_qp() cannot complete until all in process packets have
been released from the underlying hardware. If a link down event
occurs, an application can hang with a kernel stack similar to:
cat /proc/<app PID>/stack
quiesce_qp+0x178/0x250 [hfi1]
rvt_reset_qp+0x23d/0x400 [rdmavt]
rvt_destroy_qp+0x69/0x210 [rdmavt]
ib_destroy_qp+0xba/0x1c0 [ib_core]
nvme_rdma_destroy_queue_ib+0x46/0x80 [nvme_rdma]
nvme_rdma_free_queue+0x3c/0xd0 [nvme_rdma]
nvme_rdma_destroy_io_queues+0x88/0xd0 [nvme_rdma]
nvme_rdma_error_recovery_work+0x52/0xf0 [nvme_rdma]
process_one_work+0x17a/0x440
worker_thread+0x126/0x3c0
kthread+0xcf/0xe0
ret_from_fork+0x58/0x90
0xffffffffffffffff
quiesce_qp() waits until all outstanding packets have been freed.
This wait should be momentary. During a link down event, the cleanup
handling does not ensure that all packets caught by the link down are
flushed properly.
This is caused by the fact that the freeze path and the link down
event is handled the same. This is not correct. The freeze path
waits until the HFI is unfrozen and then restarts PIO. A link down
is not a freeze event. The link down path cannot restart the PIO
until link is restored. If the PIO path is restarted before the link
comes up, the application (QP) using the PIO path will hang (until
link is restored).
Fix by separating the linkdown path from the freeze path and use the
link down path for link down events.
Close a race condition sc_disable() by acquiring both the progress
and release locks.
Close a race condition in sc_stop() by moving the setting of the flag
bits under the alloc lock.
Cc: <stable@vger.kernel.org> # 4.9.x+
Fixes: 7724105686 ("IB/hfi1: add driver files")
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>
If a packet stream uses an UnsupportedVL (virtual lane), the send
engine will not send the packet, and it will not indicate that an
error has occurred. This will cause the packet stream to block.
HFI has 8 virtual lanes available for packet streams. Each lane can
be enabled or disabled using the UnsupportedVL mask. If a lane is
disabled, adding a packet to the send context must be disallowed.
The current mask for determining unsupported VLs defaults to 0 (allow
all). This is incorrect. Only the VLs that are defined should be
allowed.
Determine which VLs are disabled (mtu == 0), and set the appropriate
unsupported bit in the mask. The correct mask will allow the send
engine to error on the invalid VL, and error recovery will work
correctly.
Cc: <stable@vger.kernel.org> # 4.9.x+
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Lukasz Odzioba <lukasz.odzioba@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>
The SL specified by a user needs to be a valid SL.
Add a range check to the user specified SL value which protects from
running off the end of the SL to SC table.
CC: stable@vger.kernel.org
Fixes: 7724105686 ("IB/hfi1: add driver files")
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Calling into the new API to reset the secondary bus results in a deadlock.
This occurs because the device/bus is already locked at probe time.
Reverting back to the old behavior while the API is improved.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200985
Fixes: c6a44ba950 ("PCI: Rename pci_try_reset_bus() to pci_reset_bus()")
Fixes: 409888e096 ("IB/hfi1: Use pci_try_reset_bus() for initiating PCI Secondary Bus Reset")
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Cc: Sinan Kaya <okaya@codeaurora.org>
In calculating the global maximum number of the Scatter/Gather elements
supported, the following four maximum parameters must be taken into
consideration: max_sg_rq, max_sg_sq, max_desc_sz_rq and max_desc_sz_sq.
However instead of bringing this complexity to query_device, which still
won't be sufficient anyway (the calculations are dependent on QP type),
the safer approach will be to restore old code, which will give us 32
SGEs.
Fixes: 33023fb85a ("IB/core: add max_send_sge and max_recv_sge attributes")
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
1. DMA-able memory allocated for Shadow QP was not being freed.
2. bnxt_qplib_alloc_qp_hdr_buf() had a bug wherein the SQ pointer was
erroneously pointing to the RQ. But since the corresponding
free_qp_hdr_buf() was correct, memory being free was less than what was
allocated.
Fixes: 1ac5a40479 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Once the qp has been flushed, it cannot be flushed again. The user qp
flush logic wasn't enforcing it however. The bug can cause
touch-after-free crashes like:
Unable to handle kernel paging request for data at address 0x000001ec
Faulting instruction address: 0xc008000016069100
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c008000016069100] flush_qp+0x80/0x480 [iw_cxgb4]
LR [c00800001606cd6c] c4iw_modify_qp+0x71c/0x11d0 [iw_cxgb4]
Call Trace:
[c00800001606cd6c] c4iw_modify_qp+0x71c/0x11d0 [iw_cxgb4]
[c00800001606e868] c4iw_ib_modify_qp+0x118/0x200 [iw_cxgb4]
[c0080000119eae80] ib_security_modify_qp+0xd0/0x3d0 [ib_core]
[c0080000119c4e24] ib_modify_qp+0xc4/0x2c0 [ib_core]
[c008000011df0284] iwcm_modify_qp_err+0x44/0x70 [iw_cm]
[c008000011df0fec] destroy_cm_id+0xcc/0x370 [iw_cm]
[c008000011ed4358] rdma_destroy_id+0x3c8/0x520 [rdma_cm]
[c0080000134b0540] ucma_close+0x90/0x1b0 [rdma_ucm]
[c000000000444da4] __fput+0xe4/0x2f0
So fix flush_qp() to only flush the wq once.
Cc: stable@vger.kernel.org
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
- Switch SMC over to rdma_get_gid_attr and remove the compat
- Fix a crash in HFI1 with some BIOS's
- Fix a randconfig failure
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull more rdma updates from Jason Gunthorpe:
"This is the SMC cleanup promised, a randconfig regression fix, and
kernel oops fix.
Summary:
- Switch SMC over to rdma_get_gid_attr and remove the compat
- Fix a crash in HFI1 with some BIOS's
- Fix a randconfig failure"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/ucm: fix UCM link error
IB/hfi1: Invalid NUMA node information can cause a divide by zero
RDMA/smc: Replace ib_query_gid with rdma_get_gid_attr
There are several blockable mmu notifiers which might sleep in
mmu_notifier_invalidate_range_start and that is a problem for the
oom_reaper because it needs to guarantee a forward progress so it cannot
depend on any sleepable locks.
Currently we simply back off and mark an oom victim with blockable mmu
notifiers as done after a short sleep. That can result in selecting a new
oom victim prematurely because the previous one still hasn't torn its
memory down yet.
We can do much better though. Even if mmu notifiers use sleepable locks
there is no reason to automatically assume those locks are held. Moreover
majority of notifiers only care about a portion of the address space and
there is absolutely zero reason to fail when we are unmapping an unrelated
range. Many notifiers do really block and wait for HW which is harder to
handle and we have to bail out though.
This patch handles the low hanging fruit.
__mmu_notifier_invalidate_range_start gets a blockable flag and callbacks
are not allowed to sleep if the flag is set to false. This is achieved by
using trylock instead of the sleepable lock for most callbacks and
continue as long as we do not block down the call chain.
I think we can improve that even further because there is a common pattern
to do a range lookup first and then do something about that. The first
part can be done without a sleeping lock in most cases AFAICS.
The oom_reaper end then simply retries if there is at least one notifier
which couldn't make any progress in !blockable mode. A retry loop is
already implemented to wait for the mmap_sem and this is basically the
same thing.
The simplest way for driver developers to test this code path is to wrap
userspace code which uses these notifiers into a memcg and set the hard
limit to hit the oom. This can be done e.g. after the test faults in all
the mmu notifier managed memory and set the hard limit to something really
small. Then we are looking for a proper process tear down.
[akpm@linux-foundation.org: coding style fixes]
[akpm@linux-foundation.org: minor code simplification]
Link: http://lkml.kernel.org/r/20180716115058.5559-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Christian König <christian.koenig@amd.com> # AMD notifiers
Acked-by: Leon Romanovsky <leonro@mellanox.com> # mlx and umem_odp
Reported-by: David Rientjes <rientjes@google.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Sudeep Dutt <sudeep.dutt@intel.com>
Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the system BIOS does not supply NUMA node information to the
PCI devices, the NUMA node is selected by choosing the current
node.
This can lead to the following crash:
divide error: 0000 SMP
CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G IOE
------------ 3.10.0-693.21.1.el7.x86_64 #1
Hardware name: Intel Corporation S2600KP/S2600KP, BIOS
SE5C610.86B.01.01.0005.101720141054 10/17/2014
Workqueue: events work_for_cpu_fn
task: ffff880174480fd0 ti: ffff880174488000 task.ti: ffff880174488000
RIP: 0010: [<ffffffffc020ac69>] hfi1_dev_affinity_init+0x129/0x6a0 [hfi1]
RSP: 0018:ffff88017448bbf8 EFLAGS: 00010246
RAX: 0000000000000011 RBX: ffff88107ffba6c0 RCX: ffff88085c22e130
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880824ad0000
RBP: ffff88017448bc48 R08: 0000000000000011 R09: 0000000000000002
R10: ffff8808582b6ca0 R11: 0000000000003151 R12: ffff8808582b6ca0
R13: ffff8808582b6518 R14: ffff8808582b6010 R15: 0000000000000012
FS: 0000000000000000(0000) GS:ffff88085ec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc707404f0 CR3: 0000000001a02000 CR4: 00000000001607f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
hfi1_init_dd+0x14b3/0x27a0 [hfi1]
? pcie_capability_write_word+0x46/0x70
? hfi1_pcie_init+0xc0/0x200 [hfi1]
do_init_one+0x153/0x4c0 [hfi1]
? sched_clock_cpu+0x85/0xc0
init_one+0x1b5/0x260 [hfi1]
local_pci_probe+0x4a/0xb0
work_for_cpu_fn+0x1a/0x30
process_one_work+0x17f/0x440
worker_thread+0x278/0x3c0
? manage_workers.isra.24+0x2a0/0x2a0
kthread+0xd1/0xe0
? insert_kthread_work+0x40/0x40
ret_from_fork+0x77/0xb0
? insert_kthread_work+0x40/0x40
If the BIOS is not supplying NUMA information:
- set the default table count to 1 for all possible nodes
- select node 0 (instead of current NUMA) node to get consistent
performance
- generate an error indicating that the BIOS should be upgraded
Reviewed-by: Gary Leshner <gary.s.leshner@intel.com>
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>
rdma.git merge resolution for the 4.19 merge window
Conflicts:
drivers/infiniband/core/rdma_core.c
- Use the rdma code and revise with the new spelling for
atomic_fetch_add_unless
drivers/nvme/host/rdma.c
- Replace max_sge with max_send_sge in new blk code
drivers/nvme/target/rdma.c
- Use the blk code and revise to use NULL for ib_post_recv when
appropriate
- Replace max_sge with max_recv_sge in new blk code
net/rds/ib_send.c
- Use the net code and revise to use NULL for ib_post_recv when
appropriate
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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Merge tag 'v4.18' into rdma.git for-next
Resolve merge conflicts from the -rc cycle against the rdma.git tree:
Conflicts:
drivers/infiniband/core/uverbs_cmd.c
- New ifs added to ib_uverbs_ex_create_flow in -rc and for-next
- Merge removal of file->ucontext in for-next with new code in -rc
drivers/infiniband/core/uverbs_main.c
- for-next removed code from ib_uverbs_write() that was modified
in for-rc
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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Merge tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
- Decode AER errors with names similar to "lspci" (Tyler Baicar)
- Expose AER statistics in sysfs (Rajat Jain)
- Clear AER status bits selectively based on the type of recovery (Oza
Pawandeep)
- Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru
Gagniuc)
- Don't clear AER status bits if we're using the "Firmware-First"
strategy where firmware owns the registers (Alexandru Gagniuc)
- Use sysfs_match_string() to simplify ASPM sysfs parsing (Andy
Shevchenko)
- Remove unnecessary includes of <linux/pci-aspm.h> (Bjorn Helgaas)
- Defer DPC event handling to work queue (Keith Busch)
- Use threaded IRQ for DPC bottom half (Keith Busch)
- Print AER status while handling DPC events (Keith Busch)
- Work around IDT switch ACS Source Validation erratum (James
Puthukattukaran)
- Emit diagnostics for all cases of PCIe Link downtraining (Links
operating slower than they're capable of) (Alexandru Gagniuc)
- Skip VFs when configuring Max Payload Size (Myron Stowe)
- Reduce Root Port Max Payload Size if necessary when hot-adding a
device below it (Myron Stowe)
- Simplify SHPC existence/permission checks (Bjorn Helgaas)
- Remove hotplug sample skeleton driver (Lukas Wunner)
- Convert pciehp to threaded IRQ handling (Lukas Wunner)
- Improve pciehp tolerance of missed events and initially unstable
links (Lukas Wunner)
- Clear spurious pciehp events on resume (Lukas Wunner)
- Add pciehp runtime PM support, including for Thunderbolt controllers
(Lukas Wunner)
- Support interrupts from pciehp bridges in D3hot (Lukas Wunner)
- Mark fall-through switch cases before enabling -Wimplicit-fallthrough
(Gustavo A. R. Silva)
- Move DMA-debug PCI init from arch code to PCI core (Christoph
Hellwig)
- Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is
supplied (Heiner Kallweit)
- Unify PCI and DMA direction #defines (Shunyong Yang)
- Add PCI_DEVICE_DATA() macro (Andy Shevchenko)
- Check for VPD completion before checking for timeout (Bert Kenward)
- Limit Netronome NFP5000 config space size to work around erratum
(Jakub Kicinski)
- Set IRQCHIP_ONESHOT_SAFE for PCI MSI irqchips (Heiner Kallweit)
- Document ACPI description of PCI host bridges (Bjorn Helgaas)
- Add "pci=disable_acs_redir=" parameter to disable ACS redirection for
peer-to-peer DMA support (we don't have the peer-to-peer support yet;
this is just one piece) (Logan Gunthorpe)
- Clean up devm_of_pci_get_host_bridge_resources() resource allocation
(Jan Kiszka)
- Fixup resizable BARs after suspend/resume (Christian König)
- Make "pci=earlydump" generic (Sinan Kaya)
- Fix ROM BAR access routines to stay in bounds and check for signature
correctly (Rex Zhu)
- Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer)
- Expand documentation for pci_add_dma_alias() (Logan Gunthorpe)
- To avoid bus errors, enable PASID only if entire path supports
End-End TLP prefixes (Sinan Kaya)
- Unify slot and bus reset functions and remove hotplug knowledge from
callers (Sinan Kaya)
- Add Function-Level Reset quirks for Intel and Samsung NVMe devices to
fix guest reboot issues (Alex Williamson)
- Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD
Controller (Bjorn Helgaas)
- Remove Xilinx AXI-PCIe host bridge arch dependency (Palmer Dabbelt)
- Remove Aardvark outbound window configuration (Evan Wang)
- Fix Aardvark bridge window sizing issue (Zachary Zhang)
- Convert Aardvark to use pci_host_probe() to reduce code duplication
(Thomas Petazzoni)
- Correct the Cadence cdns_pcie_writel() signature (Alan Douglas)
- Add Cadence support for optional generic PHYs (Alan Douglas)
- Add Cadence power management ops (Alan Douglas)
- Remove redundant variable from Cadence driver (Colin Ian King)
- Add Kirin MSI support (Xiaowei Song)
- Drop unnecessary root_bus_nr setting from exynos, imx6, keystone,
armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn
Guo)
- Move link notification settings from DesignWare core to individual
drivers (Gustavo Pimentel)
- Add endpoint library MSI-X interfaces (Gustavo Pimentel)
- Correct signature of endpoint library IRQ interfaces (Gustavo
Pimentel)
- Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel)
- Add endpoint library MSI-X test support (Gustavo Pimentel)
- Remove unnecessary GFP_ATOMIC from Hyper-V "new child" allocation
(Jia-Ju Bai)
- Add more devices to Broadcom PAXC quirk (Ray Jui)
- Work around corrupted Broadcom PAXC config space to enable SMMU and
GICv3 ITS (Ray Jui)
- Disable MSI parsing to work around broken Broadcom PAXC logic in some
devices (Ray Jui)
- Hide unconfigured functions to work around a Broadcom PAXC defect
(Ray Jui)
- Lower iproc log level to reduce console output during boot (Ray Jui)
- Fix mobiveil iomem/phys_addr_t type usage (Lorenzo Pieralisi)
- Fix mobiveil missing include file (Lorenzo Pieralisi)
- Add mobiveil Kconfig/Makefile support (Lorenzo Pieralisi)
- Fix mvebu I/O space remapping issues (Thomas Petazzoni)
- Use generic pci_host_bridge in mvebu instead of ARM-specific API
(Thomas Petazzoni)
- Whitelist VMD devices with fast interrupt handlers to avoid sharing
vectors with slow handlers (Keith Busch)
* tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (153 commits)
PCI/AER: Don't clear AER bits if error handling is Firmware-First
PCI: Limit config space size for Netronome NFP5000
PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips
PCI/VPD: Check for VPD access completion before checking for timeout
PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry
PCI: Match Root Port's MPS to endpoint's MPSS as necessary
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: Add function 1 DMA alias quirk for Marvell 88SS9183
PCI: Check for PCIe Link downtraining
PCI: Add ACS Redirect disable quirk for Intel Sunrise Point
PCI: Add device-specific ACS Redirect disable infrastructure
PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE
PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support
PCI: Allow specifying devices using a base bus and path of devfns
PCI: Make specifying PCI devices in kernel parameters reusable
PCI: Hide ACS quirk declarations inside PCI core
PCI: Delay after FLR of Intel DC P3700 NVMe
PCI: Disable Samsung SM961/PM961 NVMe before FLR
PCI: Export pcie_has_flr()
PCI: mvebu: Drop bogus comment above mvebu_pcie_map_registers()
...
Pull networking updates from David Miller:
"Highlights:
- Gustavo A. R. Silva keeps working on the implicit switch fallthru
changes.
- Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
Luca Coelho.
- Re-enable ASPM in r8169, from Kai-Heng Feng.
- Add virtual XFRM interfaces, which avoids all of the limitations of
existing IPSEC tunnels. From Steffen Klassert.
- Convert GRO over to use a hash table, so that when we have many
flows active we don't traverse a long list during accumluation.
- Many new self tests for routing, TC, tunnels, etc. Too many
contributors to mention them all, but I'm really happy to keep
seeing this stuff.
- Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.
- Lots of cleanups and fixes in L2TP code from Guillaume Nault.
- Add IPSEC offload support to netdevsim, from Shannon Nelson.
- Add support for slotting with non-uniform distribution to netem
packet scheduler, from Yousuk Seung.
- Add UDP GSO support to mlx5e, from Boris Pismenny.
- Support offloading of Team LAG in NFP, from John Hurley.
- Allow to configure TX queue selection based upon RX queue, from
Amritha Nambiar.
- Support ethtool ring size configuration in aquantia, from Anton
Mikaev.
- Support DSCP and flowlabel per-transport in SCTP, from Xin Long.
- Support list based batching and stack traversal of SKBs, this is
very exciting work. From Edward Cree.
- Busyloop optimizations in vhost_net, from Toshiaki Makita.
- Introduce the ETF qdisc, which allows time based transmissions. IGB
can offload this in hardware. From Vinicius Costa Gomes.
- Add parameter support to devlink, from Moshe Shemesh.
- Several multiplication and division optimizations for BPF JIT in
nfp driver, from Jiong Wang.
- Lots of prepatory work to make more of the packet scheduler layer
lockless, when possible, from Vlad Buslov.
- Add ACK filter and NAT awareness to sch_cake packet scheduler, from
Toke Høiland-Jørgensen.
- Support regions and region snapshots in devlink, from Alex Vesker.
- Allow to attach XDP programs to both HW and SW at the same time on
a given device, with initial support in nfp. From Jakub Kicinski.
- Add TLS RX offload and support in mlx5, from Ilya Lesokhin.
- Use PHYLIB in r8169 driver, from Heiner Kallweit.
- All sorts of changes to support Spectrum 2 in mlxsw driver, from
Ido Schimmel.
- PTP support in mv88e6xxx DSA driver, from Andrew Lunn.
- Make TCP_USER_TIMEOUT socket option more accurate, from Jon
Maxwell.
- Support for templates in packet scheduler classifier, from Jiri
Pirko.
- IPV6 support in RDS, from Ka-Cheong Poon.
- Native tproxy support in nf_tables, from Máté Eckl.
- Maintain IP fragment queue in an rbtree, but optimize properly for
in-order frags. From Peter Oskolkov.
- Improvde handling of ACKs on hole repairs, from Yuchung Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
hv/netvsc: Fix NULL dereference at single queue mode fallback
net: filter: mark expected switch fall-through
xen-netfront: fix warn message as irq device name has '/'
cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
net: dsa: mv88e6xxx: missing unlock on error path
rds: fix building with IPV6=m
inet/connection_sock: prefer _THIS_IP_ to current_text_addr
net: dsa: mv88e6xxx: bitwise vs logical bug
net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
ieee802154: hwsim: using right kind of iteration
net: hns3: Add vlan filter setting by ethtool command -K
net: hns3: Set tx ring' tc info when netdev is up
net: hns3: Remove tx ring BD len register in hns3_enet
net: hns3: Fix desc num set to default when setting channel
net: hns3: Fix for phy link issue when using marvell phy driver
net: hns3: Fix for information of phydev lost problem when down/up
net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
net: hns3: Add support for serdes loopback selftest
bnxt_en: take coredump_record structure off stack
...
hns bitmap allocation functions return 0 on success and -1 on failure.
Callers of these functions wrongly used their return value as an errno,
fix that by making a proper conversion.
Fixes: a598c6f4c5 ("IB/hns: Simplify function of pd alloc and qp alloc")
Signed-off-by: Gal Pressman <pressmangal@gmail.com>
Acked-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch adds support for SRQ's created in user space and update
qedr_affiliated_event to deal with general SRQ events.
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: Yuval Bason <yuval.bason@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Implement the SRQ specific verbs and update the poll_cq verb to deal with
SRQ completions.
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: Yuval Bason <yuval.bason@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Today, we are using idr mechanism for QP's only.
This patch prepares the qedr_idr stuctures and the idr routines for
both QP's and SRQ's.
Signed-off-by: Yuval Bason <yuval.bason@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
mlx5_ib_create_qp_resp was never initialized and only the first 4 bytes
were written.
Fixes: 41d902cb7c ("RDMA/mlx5: Fix definition of mlx5_ib_create_qp_resp")
Cc: <stable@vger.kernel.org>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Several handlers need temporary allocations for the life of the method,
switch them to use the uverbs_alloc allocator.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
There is no reason for drivers to do this, the core code should take of
everything. The drivers will provide their information from rodata to
describe their modifications to the core's base uapi specification.
The core uses this to build up the runtime uapi for each device.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
This will allow FW to not send more data to TP (which would then need to
be buffered). Pass the negotiated TCP window scale to FW in the FLOWC WR.
Also refactor send_flowc() a bit to clean it up.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Now that the unregister_netdev flow for IPoIB no longer relies on external
code we can now introduce the use of priv_destructor and
needs_free_netdev.
The rdma_netdev flow is switched to use the netdev common priv_destructor
instead of the special free_rdma_netdev and the IPOIB ULP adjusted:
- priv_destructor needs to switch to point to the ULP's destructor
which will then call the rdma_ndev's in the right order
- We need to be careful around the error unwind of register_netdev
as it sometimes calls priv_destructor on failure
- ULPs need to use ndo_init/uninit to ensure proper ordering
of failures around register_netdev
Switching to priv_destructor is a necessary pre-requisite to using
the rtnl new_link mechanism.
The VNIC user for rdma_netdev should also be revised, but that is left for
another patch.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Denis Drozdov <denisd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
To optimize NVME-oF READ IOPs, use a specialized WQE that combines
the RDMA WRITE and SEND_INV WR chain submitted by the NVME-oF target
driver.
This reduces uP overhead per NVME-oF IO, and results in over 10%
improvement in NVME-oF 4K READ IOPs.
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Adds iw_cxgb4 functionality to support RDMA_WRITE_WITH_IMMEDATE opcode.
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
In c4iw_create_qp() there are several struct members which potentially
aren't inintialized like uresp.rq_key. I've fixed this code before in
in commit ae1fe07f3f ("RDMA/cxgb4: Fix stack info leak in
c4iw_create_qp()") so this time I'm just going to take a big hammer
approach and memset the whole struct to zero. Hopefully, it will stay
fixed this time.
In c4iw_create_srq() we don't clear uresp.reserved.
Fixes: 6a0b6174d3 ("rdma/cxgb4: Add support for kernel mode SRQ's")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
According to IB protocol, there are some cases that work requests must
return the flush error completion status through the completion queue. Due
to hardware limitation, the driver needs to assist the flush process.
This patch adds the support of flush cqe for hip08 in the cases that
needed, such as poll cqe, post send, post recv and aeqe handle.
The patch also considered the compatibility between kernel and user space.
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This does the same as the patch before, except for ioctl. The rules are
the same, but for the ioctl methods the core code handles setting up the
uobject.
- Retrieve the ib_dev from the uobject->context->device. This is
safe under ioctl as the core has already done rdma_alloc_begin_uobject
and so CREATE calls are entirely protected by the rwsem.
- Retrieve the ib_dev from uobject->object
- Call ib_uverbs_get_ucontext()
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The proper return code is "-EOPNOTSUPP" when the modify_cq() callback is
not supported, all drivers should generate this and all users should check
for it when detecting not supported functionality.
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com> (for mlx5)
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch avoids that sparse reports the following warning:
drivers/infiniband/hw/cxgb4/qp.c:2269:34: warning: Using plain integer as NULL pointer
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Acked-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch avoids that sparse complains about casts to restricted __be32.
Fixes: a3cdaa69e4 ("cxgb4: Adds CPL support for Shared Receive Queues")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch avoids that the following warning is reported when building with
W=1:
drivers/infiniband/hw/cxgb4/cm.c:1860:5: warning: variable 'status' set but not used [-Wunused-but-set-variable]
u8 status;
^~~~~~
Fixes: 6a0b6174d3 ("rdma/cxgb4: Add support for kernel mode SRQ's")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This was missed in a few places, and was just using 0.
Also correct the spelling of HNS_ROCE_FLOW_LABEL_MASK
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch mainly uses CMD_CSQ_DESC_NUM instead of magic number in order
to improve readability.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Set for ret was missing in the error path here, resulting in incorrect
error code for modify_qp.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This patch mainly fills the correct value into the vlan id field of qp
context as well as update the vlan field name according to the latest
hardware user manual.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Only when the IB_QP_AV flag of attr_mask is set is it valid to assign the
related fields of the av into the qp context.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The rdma core is taking care of return the right error code when the
rdma device callbacks aren't supported.
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The proper return code is "-EOPNOTSUPP" when the create_srq() callback
is not supported.
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
In the current implementation, the driver tries to allocate contiguous
memory, and if it fails, it falls back to 4K fragmented allocation.
Once the memory is fragmented, the first allocation might take a lot
of time, and even fail, which can cause connection failures.
This patch changes the logic to always allocate with 4K granularity,
since it's more robust and more likely to succeed.
This patch was tested with Lustre and no performance degradation
was observed.
Note: This commit eliminates the "shrinking WQE" feature. This feature
depended on using vmap to create a virtually contiguous send WQ.
vmap use was abandoned due to problems with several processors (see the
commit cited below). As a result, shrinking WQE was available only with
physically contiguous send WQs. Allocating such send WQs caused the
problems described above.
Therefore, as a side effect of eliminating the use of large physically
contiguous send WQs, the shrinking WQE feature became unavailable.
Warning example:
worker/20:1: page allocation failure: order:8, mode:0x80d0
CPU: 20 PID: 513 Comm: kworker/20:1 Tainted: G OE ------------
Workqueue: ib_cm cm_work_handler [ib_cm]
Call Trace:
[<ffffffff81686d81>] dump_stack+0x19/0x1b
[<ffffffff81186160>] warn_alloc_failed+0x110/0x180
[<ffffffff8118a954>] __alloc_pages_nodemask+0x9b4/0xba0
[<ffffffff811ce868>] alloc_pages_current+0x98/0x110
[<ffffffff81184fae>] __get_free_pages+0xe/0x50
[<ffffffff8133f6fe>] swiotlb_alloc_coherent+0x5e/0x150
[<ffffffff81062551>] x86_swiotlb_alloc_coherent+0x41/0x50
[<ffffffffa056b4c4>] mlx4_buf_direct_alloc.isra.7+0xc4/0x180 [mlx4_core]
[<ffffffffa056b73b>] mlx4_buf_alloc+0x1bb/0x260 [mlx4_core]
[<ffffffffa0b15496>] create_qp_common+0x536/0x1000 [mlx4_ib]
[<ffffffff811c6ef7>] ? dma_pool_free+0xa7/0xd0
[<ffffffffa0b163c1>] mlx4_ib_create_qp+0x3b1/0xdc0 [mlx4_ib]
[<ffffffffa0b01bc2>] ? mlx4_ib_create_cq+0x2d2/0x430 [mlx4_ib]
[<ffffffffa0b21f20>] mlx4_ib_create_qp_wrp+0x10/0x20 [mlx4_ib]
[<ffffffffa08f152a>] ib_create_qp+0x7a/0x2f0 [ib_core]
[<ffffffffa06205d4>] rdma_create_qp+0x34/0xb0 [rdma_cm]
[<ffffffffa08275c9>] kiblnd_create_conn+0xbf9/0x1950 [ko2iblnd]
[<ffffffffa074077a>] ? cfs_percpt_unlock+0x1a/0xb0 [libcfs]
[<ffffffffa0835519>] kiblnd_passive_connect+0xa99/0x18c0 [ko2iblnd]
Fixes: 73898db043 ("net/mlx4: Avoid wrong virtual mappings")
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>
This clearly indicates that the input is a bitwise combination of values
in an enum, and identifies which enum contains the definition of the bits.
Special accessors are provided that handle the mandatory validation of the
allowed bits and enforce the correct type for bitwise flags.
If we had introduced this at the start then the kabi would have uniformly
used u64 data to pass flags, however today there is a mixture of u64 and
u32 flags. All places are converted to accept both sizes and the accessor
fixes it. This allows all existing flags to grow to u64 in future without
any hassle.
Finally all flags are, by definition, optional. If flags are not passed
the accessor does not fail, but provides a value of zero.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Since neither ib_post_send() nor ib_post_recv() modify the data structure
their second argument points at, declare that argument const. This change
makes it necessary to declare the 'bad_wr' argument const too and also to
modify all ULPs that call ib_post_send(), ib_post_recv() or
ib_post_srq_recv(). This patch does not change any functionality but makes
it possible for the compiler to verify whether the
ib_post_(send|recv|srq_recv) really do not modify the posted work request.
To make this possible, only one cast had to be introduce that casts away
constness, namely in rpcrdma_post_recvs(). The only way I can think of to
avoid that cast is to introduce an additional loop in that function or to
change the data type of bad_wr from struct ib_recv_wr ** into int
(an index that refers to an element in the work request list). However,
both approaches would require even more extensive changes than this
patch.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
