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5 years agoRDMA/nes: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:40 +0000 (21:09 +0200)]
RDMA/nes: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/mthca: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:39 +0000 (21:09 +0200)]
RDMA/mthca: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/mlx5: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:38 +0000 (21:09 +0200)]
RDMA/mlx5: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/mlx4: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:37 +0000 (21:09 +0200)]
RDMA/mlx4: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/i40iw: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:36 +0000 (21:09 +0200)]
RDMA/i40iw: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:35 +0000 (21:09 +0200)]
RDMA/hns: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hfi1: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:34 +0000 (21:09 +0200)]
RDMA/hfi1: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/cxgb4: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:33 +0000 (21:09 +0200)]
RDMA/cxgb4: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/cxgb3: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:32 +0000 (21:09 +0200)]
RDMA/cxgb3: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/bnxt_re: Initialize ib_device_ops struct
Kamal Heib [Mon, 10 Dec 2018 19:09:31 +0000 (21:09 +0200)]
RDMA/bnxt_re: Initialize ib_device_ops struct

Initialize ib_device_ops with the supported operations using
ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/core: Introduce ib_device_ops
Kamal Heib [Mon, 10 Dec 2018 19:09:30 +0000 (21:09 +0200)]
RDMA/core: Introduce ib_device_ops

This change introduces the ib_device_ops structure that defines all the
InfiniBand device operations in one place, so the code will be more
readable and clean, unlike today when the ops are mixed with ib_device
data members.

The providers will need to define the supported operations and assign them
using ib_set_device_ops(), that will also make the providers code more
readable and clean.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx4: Remove unneeded NULL check
Yuval Shaia [Tue, 11 Dec 2018 10:26:35 +0000 (12:26 +0200)]
IB/mlx4: Remove unneeded NULL check

NULL check for kfree is unnecessary, remove it.

Fixes: b42dde478bca ("IB/mlx4: Rework special QP creation error path")
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/ocrdma: Use PCI-ID as an identification in debugfs
Leon Romanovsky [Tue, 11 Dec 2018 10:04:42 +0000 (12:04 +0200)]
RDMA/ocrdma: Use PCI-ID as an identification in debugfs

In opposite to current implementation of identification based on device
name, PCI-ID identification provides stable names suitable for device
rename. Change ocrdma debugfs representation to use PCI-ID.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/uverbs: Optimize clearing of extra bytes in response
Leon Romanovsky [Tue, 11 Dec 2018 09:41:05 +0000 (11:41 +0200)]
RDMA/uverbs: Optimize clearing of extra bytes in response

Clear extra bytes in response in batch manner instead
of doing it per-byte.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/vmw_pvrdma: Use atomic memory allocation in create AH
Gal Pressman [Mon, 10 Dec 2018 15:17:25 +0000 (17:17 +0200)]
RDMA/vmw_pvrdma: Use atomic memory allocation in create AH

Create address handle callback should not sleep, use GFP_ATOMIC instead of
GFP_KERNEL for memory allocation.

Fixes: 29c8d9eba550 ("IB: Add vmw_pvrdma driver")
Cc: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/{mlx5,ocrdma,qedr,rxe}: Omit port validation from IB verbs
Yuval Shaia [Sun, 9 Dec 2018 11:06:10 +0000 (13:06 +0200)]
IB/{mlx5,ocrdma,qedr,rxe}: Omit port validation from IB verbs

RDMA core layer already make sure port is valid, no need to check it here
again.

For the pkey validation this depends on commit b3ac5742fead ("RDMA/core:
Validate port number in query_pkey verb")

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/mlx5: Fail early if user tries to create flows on IB representors
Leon Romanovsky [Mon, 10 Dec 2018 09:19:49 +0000 (11:19 +0200)]
RDMA/mlx5: Fail early if user tries to create flows on IB representors

IB representors don't support creation of RAW ethernet QP flows.  Disable
them by reusing existing RDMA/core support macros.  We do it for both
creation and matcher because latter is not usable if no flow creation is
available.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Remove duplicated include from mlx5_ib.h
YueHaibing [Mon, 10 Dec 2018 07:27:59 +0000 (15:27 +0800)]
IB/mlx5: Remove duplicated include from mlx5_ib.h

Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Add 2X width support to query_port
Michael Guralnik [Sun, 9 Dec 2018 09:49:54 +0000 (11:49 +0200)]
IB/mlx5: Add 2X width support to query_port

Report to the user 2x width over MAD interface.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoMerge tag 'v4.20-rc6' into rdma.git for-next
Jason Gunthorpe [Tue, 11 Dec 2018 21:24:57 +0000 (14:24 -0700)]
Merge tag 'v4.20-rc6' into rdma.git for-next

For dependencies in following patches.

5 years agoIB/mlx5: Add HDR speed support to query port
Michael Guralnik [Sun, 9 Dec 2018 09:49:52 +0000 (11:49 +0200)]
IB/mlx5: Add HDR speed support to query port

Report HDR speed when HDR is supported in CapabilityMask2 and the actual
speed is HDR.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Report CapabilityMask2 in ib_query_port
Michael Guralnik [Sun, 9 Dec 2018 09:49:51 +0000 (11:49 +0200)]
IB/mlx5: Report CapabilityMask2 in ib_query_port

CapabilityMask2 exists when IB_PORT_CAP_MASK2_SUP is set in the original
capability mask. In such cases, query its value and report it in query
port.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/core: Add new IB rates
Michael Guralnik [Sun, 9 Dec 2018 09:49:50 +0000 (11:49 +0200)]
IB/core: Add new IB rates

Add the new rates that were added to Infiniband spec as part of HDR and 2x
support.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/core: Add 2X port width
Michael Guralnik [Sun, 9 Dec 2018 09:49:49 +0000 (11:49 +0200)]
IB/core: Add 2X port width

Add the new 2X port width that is part of IB spec 1.3

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/core: Add CapabilityMask2 to port attributes
Michael Guralnik [Sun, 9 Dec 2018 09:49:48 +0000 (11:49 +0200)]
IB/core: Add CapabilityMask2 to port attributes

CapabilityMask2 was added in IB Spec 1.3 under PortInfo attribute.  The
new Capapbility mask is needed in order to expose the new 2X width and HDR
speed.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/rxe: Fix incorrect cache cleanup in error flow
Yuval Shaia [Sun, 9 Dec 2018 13:53:49 +0000 (15:53 +0200)]
IB/rxe: Fix incorrect cache cleanup in error flow

Array iterator stays at the same slot, fix it.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Bugfix for RoCE loopback test
Lijun Ou [Sat, 8 Dec 2018 10:40:11 +0000 (18:40 +0800)]
RDMA/hns: Bugfix for RoCE loopback test

This patch implements a cmdq to enable the loopback of ssu module
according to the modified hardware desgin.

The ssu consists of ingress unit, packet buffer and programmable packet
process unit. if the loopback bit of ssu is not enabled, the roce packet
with loopback bit will fail.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Update posting & querying mailbox
Lijun Ou [Sat, 8 Dec 2018 10:40:10 +0000 (18:40 +0800)]
RDMA/hns: Update posting & querying mailbox

This patch updates the implementation of the mailbox command interface by
using command queue instead of operating registers.  With this update, the
software can be well decoupled with the hardware.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Fix the bug while use multi-hop of pbl
Lijun Ou [Sat, 8 Dec 2018 10:40:09 +0000 (18:40 +0800)]
RDMA/hns: Fix the bug while use multi-hop of pbl

It will prevent multiply overflow when defines the pbl for u64 type.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Encapsulate and simplify qp state transition
Lijun Ou [Sat, 8 Dec 2018 10:40:08 +0000 (18:40 +0800)]
RDMA/hns: Encapsulate and simplify qp state transition

This patch move the codes of qp state transition into the new function as
well as simplify the logic for other qp states transition.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/hns: Init qp context when modify qp from reset to init
Lijun Ou [Sat, 8 Dec 2018 10:40:07 +0000 (18:40 +0800)]
RDMA/hns: Init qp context when modify qp from reset to init

It needs to clear qp context previous when init qp context.  Otherwise,
the newly created qp context residue has the contents of the qp context
before the uninstall, and the qp context content is disordered, causing
the task to fail.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoLinux 4.20-rc6 v4.20-rc6
Linus Torvalds [Sun, 9 Dec 2018 23:31:00 +0000 (15:31 -0800)]
Linux 4.20-rc6

5 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 9 Dec 2018 23:12:33 +0000 (15:12 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "A decent batch of fixes here. I'd say about half are for problems that
  have existed for a while, and half are for new regressions added in
  the 4.20 merge window.

   1) Fix 10G SFP phy module detection in mvpp2, from Baruch Siach.

   2) Revert bogus emac driver change, from Benjamin Herrenschmidt.

   3) Handle BPF exported data structure with pointers when building
      32-bit userland, from Daniel Borkmann.

   4) Memory leak fix in act_police, from Davide Caratti.

   5) Check RX checksum offload in RX descriptors properly in aquantia
      driver, from Dmitry Bogdanov.

   6) SKB unlink fix in various spots, from Edward Cree.

   7) ndo_dflt_fdb_dump() only works with ethernet, enforce this, from
      Eric Dumazet.

   8) Fix FID leak in mlxsw driver, from Ido Schimmel.

   9) IOTLB locking fix in vhost, from Jean-Philippe Brucker.

  10) Fix SKB truesize accounting in ipv4/ipv6/netfilter frag memory
      limits otherwise namespace exit can hang. From Jiri Wiesner.

  11) Address block parsing length fixes in x25 from Martin Schiller.

  12) IRQ and ring accounting fixes in bnxt_en, from Michael Chan.

  13) For tun interfaces, only iface delete works with rtnl ops, enforce
      this by disallowing add. From Nicolas Dichtel.

  14) Use after free in liquidio, from Pan Bian.

  15) Fix SKB use after passing to netif_receive_skb(), from Prashant
      Bhole.

  16) Static key accounting and other fixes in XPS from Sabrina Dubroca.

  17) Partially initialized flow key passed to ip6_route_output(), from
      Shmulik Ladkani.

  18) Fix RTNL deadlock during reset in ibmvnic driver, from Thomas
      Falcon.

  19) Several small TCP fixes (off-by-one on window probe abort, NULL
      deref in tail loss probe, SNMP mis-estimations) from Yuchung
      Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (93 commits)
  net/sched: cls_flower: Reject duplicated rules also under skip_sw
  bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.
  bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.
  bnxt_en: Keep track of reserved IRQs.
  bnxt_en: Fix CNP CoS queue regression.
  net/mlx4_core: Correctly set PFC param if global pause is turned off.
  Revert "net/ibm/emac: wrong bit is used for STA control"
  neighbour: Avoid writing before skb->head in neigh_hh_output()
  ipv6: Check available headroom in ip6_xmit() even without options
  tcp: lack of available data can also cause TSO defer
  ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output
  mlxsw: spectrum_switchdev: Fix VLAN device deletion via ioctl
  mlxsw: spectrum_router: Relax GRE decap matching check
  mlxsw: spectrum_switchdev: Avoid leaking FID's reference count
  mlxsw: spectrum_nve: Remove easily triggerable warnings
  ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes
  sctp: frag_point sanity check
  tcp: fix NULL ref in tail loss probe
  tcp: Do not underestimate rwnd_limited
  net: use skb_list_del_init() to remove from RX sublists
  ...

5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 Dec 2018 23:09:55 +0000 (15:09 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Three fixes: a boot parameter re-(re-)fix, a retpoline build artifact
  fix and an LLVM workaround"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso: Drop implicit common-page-size linker flag
  x86/build: Fix compiler support check for CONFIG_RETPOLINE
  x86/boot: Clear RSDP address in boot_params for broken loaders

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 Dec 2018 22:21:33 +0000 (14:21 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull kprobes fixes from Ingo Molnar:
 "Two kprobes fixes: a blacklist fix and an instruction patching related
  corruption fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kprobes/x86: Blacklist non-attachable interrupt functions
  kprobes/x86: Fix instruction patching corruption when copying more than one RIP-relative instruction

5 years agoMerge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 Dec 2018 22:03:56 +0000 (14:03 -0800)]
Merge branch 'efi-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull EFI fixes from Ingo Molnar:
 "Two fixes: a large-system fix and an earlyprintk fix with certain
  resolutions"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/earlyprintk/efi: Fix infinite loop on some screen widths
  x86/efi: Allocate e820 buffer before calling efi_exit_boot_service

5 years agonet/sched: cls_flower: Reject duplicated rules also under skip_sw
Or Gerlitz [Sun, 9 Dec 2018 16:10:24 +0000 (18:10 +0200)]
net/sched: cls_flower: Reject duplicated rules also under skip_sw

Currently, duplicated rules are rejected only for skip_hw or "none",
hence allowing users to push duplicates into HW for no reason.

Use the flower tables to protect for that.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reported-by: Chris Mi <chrism@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'bnxt_en-Bug-fixes'
David S. Miller [Sun, 9 Dec 2018 19:46:59 +0000 (11:46 -0800)]
Merge branch 'bnxt_en-Bug-fixes'

Michael Chan says:

====================
bnxt_en: Bug fixes.

The first patch fixes a regression on CoS queue setup, introduced
recently by the 57500 new chip support patches.  The rest are
fixes related to ring and resource accounting on the new 57500 chips.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.
Michael Chan [Sun, 9 Dec 2018 12:01:02 +0000 (07:01 -0500)]
bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.

The CP rings are accounted differently on the new 57500 chips.  There
must be enough CP rings for the sum of RX and TX rings on the new
chips.  The current logic may be over-estimating the RX and TX rings.

The output parameter max_cp should be the maximum NQs capped by
MSIX vectors available for networking in the context of 57500 chips.
The existing code which uses CMPL rings capped by the MSIX vectors
works most of the time but is not always correct.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.
Michael Chan [Sun, 9 Dec 2018 12:01:01 +0000 (07:01 -0500)]
bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.

The new 57500 chips have introduced the NQ structure in addition to
the existing CP rings in all chips.  We need to introduce a new
bnxt_nq_rings_in_use().  On legacy chips, the 2 functions are the
same and one will just call the other.  On the new chips, they
refer to the 2 separate ring structures.  The new function is now
called to determine the resource (NQ or CP rings) associated with
MSIX that are in use.

On 57500 chips, the RDMA driver does not use the CP rings so
we don't need to do the subtraction adjustment.

Fixes: 41e8d7983752 ("bnxt_en: Modify the ring reservation functions for 57500 series chips.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobnxt_en: Keep track of reserved IRQs.
Michael Chan [Sun, 9 Dec 2018 12:01:00 +0000 (07:01 -0500)]
bnxt_en: Keep track of reserved IRQs.

The new 57500 chips use 1 NQ per MSIX vector, whereas legacy chips use
1 CP ring per MSIX vector.  To better unify this, add a resv_irqs
field to struct bnxt_hw_resc.  On legacy chips, we initialize resv_irqs
with resv_cp_rings.  On new chips, we initialize it with the allocated
MSIX resources.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobnxt_en: Fix CNP CoS queue regression.
Michael Chan [Sun, 9 Dec 2018 12:00:59 +0000 (07:00 -0500)]
bnxt_en: Fix CNP CoS queue regression.

Recent changes to support the 57500 devices have created this
regression.  The bnxt_hwrm_queue_qportcfg() call was moved to be
called earlier before the RDMA support was determined, causing
the CoS queues configuration to be set before knowing whether RDMA
was supported or not.  Fix it by moving it to the right place right
after RDMA support is determined.

Fixes: 98f04cf0f1fc ("bnxt_en: Check context memory requirements from firmware.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'char-misc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 9 Dec 2018 18:43:17 +0000 (10:43 -0800)]
Merge tag 'char-misc-4.20-rc6' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small driver fixes for 4.20-rc6.

  There is a hyperv fix that for some reaon took forever to get into a
  shape that could be applied to the tree properly, but resolves a much
  reported issue. The others are some gnss patches, one a bugfix and the
  two others updates to the MAINTAINERS file to properly match the gnss
  files in the tree.

  All have been in linux-next for a while with no reported issues"

* tag 'char-misc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  MAINTAINERS: exclude gnss from SIRFPRIMA2 regex matching
  MAINTAINERS: add gnss scm tree
  gnss: sirf: fix activation retry handling
  Drivers: hv: vmbus: Offload the handling of channels to two workqueues

5 years agoMerge tag 'staging-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 9 Dec 2018 18:35:33 +0000 (10:35 -0800)]
Merge tag 'staging-4.20-rc6' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are two staging driver bugfixes for 4.20-rc6.

  One is a revert of a previously incorrect patch that was merged a
  while ago, and the other resolves a possible buffer overrun that was
  found by code inspection.

  Both of these have been in the linux-next tree with no reported
  issues"

* tag 'staging-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  Revert commit ef9209b642f "staging: rtl8723bs: Fix indenting errors and an off-by-one mistake in core/rtw_mlme_ext.c"
  staging: rtl8712: Fix possible buffer overrun

5 years agoMerge tag 'tty-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 9 Dec 2018 18:24:29 +0000 (10:24 -0800)]
Merge tag 'tty-4.20-rc6' of git://git./linux/kernel/git/gregkh/tty

Pull tty driver fixes from Greg KH:
 "Here are three small tty driver fixes for 4.20-rc6

  Nothing major, just some bug fixes for reported issues. Full details
  are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  kgdboc: fix KASAN global-out-of-bounds bug in param_set_kgdboc_var()
  tty: serial: 8250_mtk: always resume the device in probe.
  tty: do not set TTY_IO_ERROR flag if console port

5 years agoMerge tag 'usb-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 9 Dec 2018 18:18:24 +0000 (10:18 -0800)]
Merge tag 'usb-4.20-rc6' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 4.20-rc6

  The "largest" here are some xhci fixes for reported issues. Also here
  is a USB core fix, some quirk additions, and a usb-serial fix which
  required the export of one of the tty layer's functions to prevent
  code duplication. The tty maintainer agreed with this change.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  xhci: Prevent U1/U2 link pm states if exit latency is too long
  xhci: workaround CSS timeout on AMD SNPS 3.0 xHC
  USB: check usb_get_extra_descriptor for proper size
  USB: serial: console: fix reported terminal settings
  usb: quirk: add no-LPM quirk on SanDisk Ultra Flair device
  USB: Fix invalid-free bug in port_over_current_notify()
  usb: appledisplay: Add 27" Apple Cinema Display

5 years agoMerge tag '4.20-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 9 Dec 2018 18:15:13 +0000 (10:15 -0800)]
Merge tag '4.20-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three small fixes: a fix for smb3 direct i/o, a fix for CIFS DFS for
  stable and a minor cifs Kconfig fix"

* tag '4.20-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Avoid returning EBUSY to upper layer VFS
  cifs: Fix separator when building path from dentry
  cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)

5 years agoMerge tag 'dax-fixes-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sun, 9 Dec 2018 17:54:04 +0000 (09:54 -0800)]
Merge tag 'dax-fixes-4.20-rc6' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull dax fixes from Dan Williams:
 "The last of the known regression fixes and fallout from the Xarray
  conversion of the filesystem-dax implementation.

  On the path to debugging why the dax memory-failure injection test
  started failing after the Xarray conversion a couple more fixes for
  the dax_lock_mapping_entry(), now called dax_lock_page(), surfaced.
  Those plus the bug that started the hunt are now addressed. These
  patches have appeared in a -next release with no issues reported.

  Note the touches to mm/memory-failure.c are just the conversion to the
  new function signature for dax_lock_page().

  Summary:

   - Fix the Xarray conversion of fsdax to properly handle
     dax_lock_mapping_entry() in the presense of pmd entries

   - Fix inode destruction racing a new lock request"

* tag 'dax-fixes-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: Fix unlock mismatch with updated API
  dax: Don't access a freed inode
  dax: Check page->mapping isn't NULL

5 years agoMerge tag 'libnvdimm-fixes-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 Dec 2018 17:46:54 +0000 (09:46 -0800)]
Merge tag 'libnvdimm-fixes-4.20-rc6' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "A regression fix for the Address Range Scrub implementation, yes
  another one, and support for platforms that misalign persistent memory
  relative to the Linux memory hotplug section constraint. Longer term,
  support for sub-section memory hotplug would alleviate alignment
  waste, but until then this hack allows a 'struct page' memmap to be
  established for these misaligned memory regions.

  These have all appeared in a -next release, and thanks to Patrick for
  reporting and testing the alignment padding fix.

  Summary:

   - Unless and until the core mm handles memory hotplug units smaller
     than a section (128M), persistent memory namespaces must be padded
     to section alignment.

     The libnvdimm core already handled section collision with "System
     RAM", but some configurations overlap independent "Persistent
     Memory" ranges within a section, so additional padding injection is
     added for that case.

   - The recent reworks of the ARS (address range scrub) state machine
     to reduce the number of state flags inadvertantly missed a
     conversion of acpi_nfit_ars_rescan() call sites. Fix the regression
     whereby user-requested ARS results in a "short" scrub rather than a
     "long" scrub.

   - Fixup the unit tests to handle / test the 128M section alignment of
     mocked test resources.

* tag 'libnvdimm-fixes-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  acpi/nfit: Fix user-initiated ARS to be "ARS-long" rather than "ARS-short"
  libnvdimm, pfn: Pad pfn namespaces relative to other regions
  tools/testing/nvdimm: Align test resources to 128M

5 years agonet/mlx4_core: Correctly set PFC param if global pause is turned off.
Tarick Bedeir [Fri, 7 Dec 2018 08:30:26 +0000 (00:30 -0800)]
net/mlx4_core: Correctly set PFC param if global pause is turned off.

rx_ppp and tx_ppp can be set between 0 and 255, so don't clamp to 1.

Fixes: 6e8814ceb7e8 ("net/mlx4_en: Fix mixed PFC and Global pause user control requests")
Signed-off-by: Tarick Bedeir <tarick@google.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
Linus Torvalds [Sun, 9 Dec 2018 01:45:20 +0000 (17:45 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/evalenti/linux-soc-thermal

Pull thermal SoC fixes from Eduardo Valentin:
 "Fixes for armada and broadcom thermal drivers"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: broadcom: constify thermal_zone_of_device_ops structure
  thermal: armada: constify thermal_zone_of_device_ops structure
  thermal: bcm2835: Switch to SPDX identifier
  thermal: armada: fix legacy resource fixup
  thermal: armada: fix legacy validity test sense

5 years agoMerge tag 'asm-generic-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd...
Linus Torvalds [Sat, 8 Dec 2018 19:44:04 +0000 (11:44 -0800)]
Merge tag 'asm-generic-4.20' of git://git./linux/kernel/git/arnd/asm-generic

Pull asm-generic fix from Arnd Bergmann:
 "Multiple people reported a bug I introduced in asm-generic/unistd.h in
  4.20, this is the obvious bugfix to get glibc and others to correctly
  build again on new architectures that no longer provide the old
  fstatat64() family of system calls"

* tag 'asm-generic-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: unistd.h: fixup broken macro include.

5 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 8 Dec 2018 19:33:26 +0000 (11:33 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A few clk driver fixes this time:

   - Introduce protected-clock DT binding to fix breakage on qcom
     sdm845-mtp boards where the qspi clks introduced this merge window
     cause the firmware on those boards to take down the system if we
     try to read the clk registers

   - Fix a couple off-by-one errors found by Dan Carpenter

   - Handle failure in zynq fixed factor clk driver to avoid using
     uninitialized data"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: zynqmp: Off by one in zynqmp_is_valid_clock()
  clk: mmp: Off by one in mmp_clk_add()
  clk: mvebu: Off by one bugs in cp110_of_clk_get()
  arm64: dts: qcom: sdm845-mtp: Mark protected gcc clocks
  clk: qcom: Support 'protected-clocks' property
  dt-bindings: clk: Introduce 'protected-clocks' property
  clk: zynqmp: handle fixed factor param query error

5 years agoMerge tag 'xfs-4.20-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sat, 8 Dec 2018 19:25:02 +0000 (11:25 -0800)]
Merge tag 'xfs-4.20-fixes-3' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "Here are hopefully the last set of fixes for 4.20.

  There's a fix for a longstanding statfs reporting problem with project
  quotas, a correction for page cache invalidation behaviors when
  fallocating near EOF, and a fix for a broken metadata verifier return
  code.

  Finally, the most important fix is to the pipe splicing code (aka the
  generic copy_file_range fallback) to avoid pointless short directio
  reads by only asking the filesystem for as much data as there are
  available pages in the pipe buffer. Our previous fix (simulated short
  directio reads because the number of pages didn't match the length of
  the read requested) caused subtle problems on overlayfs, so that part
  is reverted.

  Anyhow, this series passes fstests -g all on xfs and overlay+xfs, and
  has passed 17 billion fsx operations problem-free since I started
  testing

  Summary:

   - Fix broken project quota inode counts

   - Fix incorrect PAGE_MASK/PAGE_SIZE usage

   - Fix incorrect return value in btree verifier

   - Fix WARN_ON remap flags false positive

   - Fix splice read overflows"

* tag 'xfs-4.20-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  iomap: partially revert 4721a601099 (simulated directio short read on EFAULT)
  splice: don't read more than available pipe space
  vfs: allow some remap flags to be passed to vfs_clone_file_range
  xfs: fix inverted return from xfs_btree_sblock_verify_crc
  xfs: fix PAGE_MASK usage in xfs_free_file_space
  fs/xfs: fix f_ffree value for statfs when project quota is set

5 years agoRevert "mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask"
David Rientjes [Fri, 7 Dec 2018 22:50:16 +0000 (14:50 -0800)]
Revert "mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask"

This reverts commit 89c83fb539f95491be80cdd5158e6f0ce329e317.

This should have been done as part of 2f0799a0ffc0 ("mm, thp: restore
node-local hugepage allocations").  The movement of the thp allocation
policy from alloc_pages_vma() to alloc_hugepage_direct_gfpmask() was
intended to only set __GFP_THISNODE for mempolicies that are not
MPOL_BIND whereas the revert could set this regardless of mempolicy.

While the check for MPOL_BIND between alloc_hugepage_direct_gfpmask()
and alloc_pages_vma() was racy, that has since been removed since the
revert.  What is left is the possibility to use __GFP_THISNODE in
policy_node() when it is unexpected because the special handling for
hugepages in alloc_pages_vma()  was removed as part of the consolidation.

Secondly, prior to 89c83fb539f9, alloc_pages_vma() implemented a somewhat
different policy for hugepage allocations, which were allocated through
alloc_hugepage_vma().  For hugepage allocations, if the allocating
process's node is in the set of allowed nodes, allocate with
__GFP_THISNODE for that node (for MPOL_PREFERRED, use that node with
__GFP_THISNODE instead).  This was changed for shmem_alloc_hugepage() to
allow fallback to other nodes in 89c83fb539f9 as it did for new_page() in
mm/mempolicy.c which is functionally different behavior and removes the
requirement to only allocate hugepages locally.

So this commit does a full revert of 89c83fb539f9 instead of the partial
revert that was done in 2f0799a0ffc0.  The result is the same thp
allocation policy for 4.20 that was in 4.19.

Fixes: 89c83fb539f9 ("mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask")
Fixes: 2f0799a0ffc0 ("mm, thp: restore node-local hugepage allocations")
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoRevert "net/ibm/emac: wrong bit is used for STA control"
Benjamin Herrenschmidt [Fri, 7 Dec 2018 04:05:04 +0000 (15:05 +1100)]
Revert "net/ibm/emac: wrong bit is used for STA control"

This reverts commit 624ca9c33c8a853a4a589836e310d776620f4ab9.

This commit is completely bogus. The STACR register has two formats, old
and new, depending on the version of the IP block used. There's a pair of
device-tree properties that can be used to specify the format used:

has-inverted-stacr-oc
has-new-stacr-staopc

What this commit did was to change the bit definition used with the old
parts to match the new parts. This of course breaks the driver on all
the old ones.

Instead, the author should have set the appropriate properties in the
device-tree for the variant used on his board.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'skb-headroom-slab-out-of-bounds'
David S. Miller [Sat, 8 Dec 2018 00:24:40 +0000 (16:24 -0800)]
Merge branch 'skb-headroom-slab-out-of-bounds'

Stefano Brivio says:

====================
Fix slab out-of-bounds on insufficient headroom for IPv6 packets

Patch 1/2 fixes a slab out-of-bounds occurring with short SCTP packets over
IPv4 over L2TP over IPv6 on a configuration with relatively low HEADER_MAX.

Patch 2/2 makes sure we avoid writing before the allocated buffer in
neigh_hh_output() in case the headroom is enough for the unaligned hardware
header size, but not enough for the aligned one, and that we warn if we hit
this condition.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoneighbour: Avoid writing before skb->head in neigh_hh_output()
Stefano Brivio [Thu, 6 Dec 2018 18:30:37 +0000 (19:30 +0100)]
neighbour: Avoid writing before skb->head in neigh_hh_output()

While skb_push() makes the kernel panic if the skb headroom is less than
the unaligned hardware header size, it will proceed normally in case we
copy more than that because of alignment, and we'll silently corrupt
adjacent slabs.

In the case fixed by the previous patch,
"ipv6: Check available headroom in ip6_xmit() even without options", we
end up in neigh_hh_output() with 14 bytes headroom, 14 bytes hardware
header and write 16 bytes, starting 2 bytes before the allocated buffer.

Always check we're not writing before skb->head and, if the headroom is
not enough, warn and drop the packet.

v2:
 - instead of panicking with BUG_ON(), WARN_ON_ONCE() and drop the packet
   (Eric Dumazet)
 - if we avoid the panic, though, we need to explicitly check the headroom
   before the memcpy(), otherwise we'll have corrupted slabs on a running
   kernel, after we warn
 - use __skb_push() instead of skb_push(), as the headroom check is
   already implemented here explicitly (Eric Dumazet)

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Check available headroom in ip6_xmit() even without options
Stefano Brivio [Thu, 6 Dec 2018 18:30:36 +0000 (19:30 +0100)]
ipv6: Check available headroom in ip6_xmit() even without options

Even if we send an IPv6 packet without options, MAX_HEADER might not be
enough to account for the additional headroom required by alignment of
hardware headers.

On a configuration without HYPERV_NET, WLAN, AX25, and with IPV6_TUNNEL,
sending short SCTP packets over IPv4 over L2TP over IPv6, we start with
100 bytes of allocated headroom in sctp_packet_transmit(), end up with 54
bytes after l2tp_xmit_skb(), and 14 bytes in ip6_finish_output2().

Those would be enough to append our 14 bytes header, but we're going to
align that to 16 bytes, and write 2 bytes out of the allocated slab in
neigh_hh_output().

KASan says:

[  264.967848] ==================================================================
[  264.967861] BUG: KASAN: slab-out-of-bounds in ip6_finish_output2+0x1aec/0x1c70
[  264.967866] Write of size 16 at addr 000000006af1c7fe by task netperf/6201
[  264.967870]
[  264.967876] CPU: 0 PID: 6201 Comm: netperf Not tainted 4.20.0-rc4+ #1
[  264.967881] Hardware name: IBM 2827 H43 400 (z/VM 6.4.0)
[  264.967887] Call Trace:
[  264.967896] ([<00000000001347d6>] show_stack+0x56/0xa0)
[  264.967903]  [<00000000017e379c>] dump_stack+0x23c/0x290
[  264.967912]  [<00000000007bc594>] print_address_description+0xf4/0x290
[  264.967919]  [<00000000007bc8fc>] kasan_report+0x13c/0x240
[  264.967927]  [<000000000162f5e4>] ip6_finish_output2+0x1aec/0x1c70
[  264.967935]  [<000000000163f890>] ip6_finish_output+0x430/0x7f0
[  264.967943]  [<000000000163fe44>] ip6_output+0x1f4/0x580
[  264.967953]  [<000000000163882a>] ip6_xmit+0xfea/0x1ce8
[  264.967963]  [<00000000017396e2>] inet6_csk_xmit+0x282/0x3f8
[  264.968033]  [<000003ff805fb0ba>] l2tp_xmit_skb+0xe02/0x13e0 [l2tp_core]
[  264.968037]  [<000003ff80631192>] l2tp_eth_dev_xmit+0xda/0x150 [l2tp_eth]
[  264.968041]  [<0000000001220020>] dev_hard_start_xmit+0x268/0x928
[  264.968069]  [<0000000001330e8e>] sch_direct_xmit+0x7ae/0x1350
[  264.968071]  [<000000000122359c>] __dev_queue_xmit+0x2b7c/0x3478
[  264.968075]  [<00000000013d2862>] ip_finish_output2+0xce2/0x11a0
[  264.968078]  [<00000000013d9b14>] ip_finish_output+0x56c/0x8c8
[  264.968081]  [<00000000013ddd1e>] ip_output+0x226/0x4c0
[  264.968083]  [<00000000013dbd6c>] __ip_queue_xmit+0x894/0x1938
[  264.968100]  [<000003ff80bc3a5c>] sctp_packet_transmit+0x29d4/0x3648 [sctp]
[  264.968116]  [<000003ff80b7bf68>] sctp_outq_flush_ctrl.constprop.5+0x8d0/0xe50 [sctp]
[  264.968131]  [<000003ff80b7c716>] sctp_outq_flush+0x22e/0x7d8 [sctp]
[  264.968146]  [<000003ff80b35c68>] sctp_cmd_interpreter.isra.16+0x530/0x6800 [sctp]
[  264.968161]  [<000003ff80b3410a>] sctp_do_sm+0x222/0x648 [sctp]
[  264.968177]  [<000003ff80bbddac>] sctp_primitive_ASSOCIATE+0xbc/0xf8 [sctp]
[  264.968192]  [<000003ff80b93328>] __sctp_connect+0x830/0xc20 [sctp]
[  264.968208]  [<000003ff80bb11ce>] sctp_inet_connect+0x2e6/0x378 [sctp]
[  264.968212]  [<0000000001197942>] __sys_connect+0x21a/0x450
[  264.968215]  [<000000000119aff8>] sys_socketcall+0x3d0/0xb08
[  264.968218]  [<000000000184ea7a>] system_call+0x2a2/0x2c0

[...]

Just like ip_finish_output2() does for IPv4, check that we have enough
headroom in ip6_xmit(), and reallocate it if we don't.

This issue is older than git history.

Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotcp: lack of available data can also cause TSO defer
Eric Dumazet [Thu, 6 Dec 2018 17:58:24 +0000 (09:58 -0800)]
tcp: lack of available data can also cause TSO defer

tcp_tso_should_defer() can return true in three different cases :

 1) We are cwnd-limited
 2) We are rwnd-limited
 3) We are application limited.

Neal pointed out that my recent fix went too far, since
it assumed that if we were not in 1) case, we must be rwnd-limited

Fix this by properly populating the is_cwnd_limited and
is_rwnd_limited booleans.

After this change, we can finally move the silly check for FIN
flag only for the application-limited case.

The same move for EOR bit will be handled in net-next,
since commit 1c09f7d073b1 ("tcp: do not try to defer skbs
with eor mark (MSG_EOR)") is scheduled for linux-4.21

Tested by running 200 concurrent netperf -t TCP_RR -- -r 60000,100
and checking none of them was rwnd_limited in the chrono_stat
output from "ss -ti" command.

Fixes: 41727549de3e ("tcp: Do not underestimate rwnd_limited")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 7 Dec 2018 22:34:10 +0000 (14:34 -0800)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull vhost/virtio fixes from Michael Tsirkin:
 "A couple of last-minute fixes"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost/vsock: fix use-after-free in network stack callers
  virtio/s390: fix race in ccw_io_helper()
  virtio/s390: avoid race on vcdev->config
  vhost/vsock: fix reset orphans race with close timeout

5 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 7 Dec 2018 22:18:49 +0000 (14:18 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fix from Catalin Marinas:
 "Avoid sending IPIs with interrupts disabled"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: hibernate: Avoid sending cross-calling with interrupts disabled

5 years agoRDMA/core: Validate port number in query_pkey verb
Yuval Shaia [Thu, 6 Dec 2018 12:48:18 +0000 (14:48 +0200)]
RDMA/core: Validate port number in query_pkey verb

Before calling the driver's function let's make sure port is valid.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoMerge tag 'gcc-plugins-v4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 7 Dec 2018 21:13:07 +0000 (13:13 -0800)]
Merge tag 'gcc-plugins-v4.20-rc6' of git://git./linux/kernel/git/kees/linux

Pull gcc stackleak plugin fixes from Kees Cook:

 - Remove tracing for inserted stack depth marking function (Anders
   Roxell)

 - Move gcc-plugin pass location to avoid objtool warnings (Alexander
   Popov)

* tag 'gcc-plugins-v4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  stackleak: Register the 'stackleak_cleanup' pass before the '*free_cfg' pass
  stackleak: Mark stackleak_track_stack() as notrace

5 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 7 Dec 2018 21:07:10 +0000 (13:07 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - Disable the new crypto stats interface as it's still being changed

 - Fix potential uses-after-free in cbc/cfb/pcbc.

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: user - Disable statistics interface
  crypto: do not free algorithm before using

5 years agoMerge tag 'pci-v4.20-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 7 Dec 2018 20:58:34 +0000 (12:58 -0800)]
Merge tag 'pci-v4.20-fixes-3' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Revert ASPM change that caused a regression"

* tag 'pci-v4.20-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "PCI/ASPM: Do not initialize link state when aspm_disabled is set"

5 years agoMerge branch 'mlx5-packet-credit-fc' into rdma.git
Jason Gunthorpe [Fri, 7 Dec 2018 20:25:12 +0000 (13:25 -0700)]
Merge branch 'mlx5-packet-credit-fc' into rdma.git

Danit Goldberg says:

Packet based credit mode

Packet based credit mode is an alternative end-to-end credit mode for QPs
set during their creation. Credits are transported from the responder to
the requester to optimize the use of its receive resources.  In
packet-based credit mode, credits are issued on a per packet basis.

The advantage of this feature comes while sending large RDMA messages
through switches that are short in memory.

The first commit exposes QP creation flag and the HCA capability. The
second commit adds support for a new DV QP creation flag. The last commit
report packet based credit mode capability via the MLX5DV device
capabilities.

* branch 'mlx5-packet-credit-fc':
  IB/mlx5: Report packet based credit mode device capability
  IB/mlx5: Add packet based credit mode support
  net/mlx5: Expose packet based credit mode

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoipv6: sr: properly initialize flowi6 prior passing to ip6_route_output
Shmulik Ladkani [Fri, 7 Dec 2018 07:50:17 +0000 (09:50 +0200)]
ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output

In 'seg6_output', stack variable 'struct flowi6 fl6' was missing
initialization.

Fixes: 6c8702c60b88 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels")
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoIB/mlx5: Report packet based credit mode device capability
Danit Goldberg [Fri, 30 Nov 2018 11:22:06 +0000 (13:22 +0200)]
IB/mlx5: Report packet based credit mode device capability

Report packet based credit mode capability via the mlx5 DV interface.

Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Add packet based credit mode support
Danit Goldberg [Fri, 30 Nov 2018 11:22:05 +0000 (13:22 +0200)]
IB/mlx5: Add packet based credit mode support

The device can support two credit modes, message based (default) and
packet based. In order to enable packet based mode, the QP should be
created with special flag that indicates this.

This patch adds support for the new DV QP creation flag that can be used
for RC QPs in order to change the credit mode.

Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoMerge tag 'for-linus-20181207' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 7 Dec 2018 18:40:37 +0000 (10:40 -0800)]
Merge tag 'for-linus-20181207' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Let's try this again...

  We're finally happy with the DM livelock issue, and it's also passed
  overnight testing and the corruption regression test. The end result
  is much nicer now too, which is great.

  Outside of that fix, there's a pull request for NVMe with two small
  fixes, and a regression fix for BFQ from this merge window. The BFQ
  fix looks bigger than it is, it's 90% comment updates"

* tag 'for-linus-20181207' of git://git.kernel.dk/linux-block:
  blk-mq: punt failed direct issue to dispatch list
  nvmet-rdma: fix response use after free
  nvme: validate controller state before rescheduling keep alive
  block, bfq: fix decrement of num_active_groups

5 years agoMerge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 7 Dec 2018 18:31:31 +0000 (10:31 -0800)]
Merge branch 'i2c/for-current-fixed' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "A set of driver bugfixes for the I2C subsystem"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: uniphier-f: fix violation of tLOW requirement for Fast-mode
  i2c: uniphier: fix violation of tLOW requirement for Fast-mode
  i2c: uniphier-f: fill TX-FIFO only in IRQ handler for repeated START
  i2c: uniphier-f: fix timeout error after reading 8 bytes
  i2c: scmi: Fix probe error on devices with an empty SMB0001 ACPI device node
  i2c: axxia: properly handle master timeout
  i2c: rcar: check bus state before reinitializing
  i2c: nvidia-gpu: limit reads also for combined messages
  i2c: nvidia-gpu: adhere to I2C fault codes

5 years agoMerge tag 'dmaengine-fix-4.20-rc6' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 7 Dec 2018 17:58:34 +0000 (09:58 -0800)]
Merge tag 'dmaengine-fix-4.20-rc6' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "Another pull request for dmaengine. We got bunch of fixes early this
  week and all are tagged to stable. Hope this is last fix for this
  cycle:

   - Fix imx-sdma handling of channel terminations, this involves
     reverting two commits and implement async termination

   - Fix cppi dma channel deletion from pending list on stop

   - Fix FIFO size for dw controller in Intel Merrifield"

* tag 'dmaengine-fix-4.20-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: dw: Fix FIFO size for Intel Merrifield
  dmaengine: cppi41: delete channel from pending list when stop channel
  dmaengine: imx-sdma: use GFP_NOWAIT for dma descriptor allocations
  dmaengine: imx-sdma: implement channel termination via worker
  Revert "dmaengine: imx-sdma: alloclate bd memory from dma pool"
  Revert "dmaengine: imx-sdma: Use GFP_NOWAIT for dma allocations"

5 years agox86/vdso: Drop implicit common-page-size linker flag
Nick Desaulniers [Thu, 6 Dec 2018 19:12:31 +0000 (11:12 -0800)]
x86/vdso: Drop implicit common-page-size linker flag

GNU linker's -z common-page-size's default value is based on the target
architecture. arch/x86/entry/vdso/Makefile sets it to the architecture
default, which is implicit and redundant. Drop it.

Fixes: 2aae950b21e4 ("x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu")
Reported-by: Dmitry Golovin <dima@golovin.in>
Reported-by: Bill Wendling <morbo@google.com>
Suggested-by: Dmitry Golovin <dima@golovin.in>
Suggested-by: Rui Ueyama <ruiu@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Fangrui Song <maskray@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com
Link: https://bugs.llvm.org/show_bug.cgi?id=38774
Link: https://github.com/ClangBuiltLinux/linux/issues/31
5 years agoarm64: hibernate: Avoid sending cross-calling with interrupts disabled
Will Deacon [Fri, 7 Dec 2018 12:47:10 +0000 (12:47 +0000)]
arm64: hibernate: Avoid sending cross-calling with interrupts disabled

Since commit 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the
I-cache for kernel mappings"), a call to flush_icache_range() will use
an IPI to cross-call other online CPUs so that any stale instructions
are flushed from their pipelines. This triggers a WARN during the
hibernation resume path, where flush_icache_range() is called with
interrupts disabled and is therefore prone to deadlock:

  | Disabling non-boot CPUs ...
  | CPU1: shutdown
  | psci: CPU1 killed.
  | CPU2: shutdown
  | psci: CPU2 killed.
  | CPU3: shutdown
  | psci: CPU3 killed.
  | WARNING: CPU: 0 PID: 1 at ../kernel/smp.c:416 smp_call_function_many+0xd4/0x350
  | Modules linked in:
  | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.20.0-rc4 #1

Since all secondary CPUs have been taken offline prior to invalidating
the I-cache, there's actually no need for an IPI and we can simply call
__flush_icache_range() instead.

Cc: <stable@vger.kernel.org>
Fixes: 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings")
Reported-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Tested-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
5 years agoMerge branch 'nvme-4.20' of git://git.infradead.org/nvme into for-linus
Jens Axboe [Fri, 7 Dec 2018 15:40:13 +0000 (08:40 -0700)]
Merge branch 'nvme-4.20' of git://git.infradead.org/nvme into for-linus

Pull NVMe fixes from Christoph.

* 'nvme-4.20' of git://git.infradead.org/nvme:
  nvmet-rdma: fix response use after free
  nvme: validate controller state before rescheduling keep alive

5 years agoblk-mq: punt failed direct issue to dispatch list
Jens Axboe [Fri, 7 Dec 2018 05:17:44 +0000 (22:17 -0700)]
blk-mq: punt failed direct issue to dispatch list

After the direct dispatch corruption fix, we permanently disallow direct
dispatch of non read/write requests. This works fine off the normal IO
path, as they will be retried like any other failed direct dispatch
request. But for the blk_insert_cloned_request() that only DM uses to
bypass the bottom level scheduler, we always first attempt direct
dispatch. For some types of requests, that's now a permanent failure,
and no amount of retrying will make that succeed. This results in a
livelock.

Instead of making special cases for what we can direct issue, and now
having to deal with DM solving the livelock while still retaining a BUSY
condition feedback loop, always just add a request that has been through
->queue_rq() to the hardware queue dispatch list. These are safe to use
as no merging can take place there. Additionally, if requests do have
prepped data from drivers, we aren't dependent on them not sharing space
in the request structure to safely add them to the IO scheduler lists.

This basically reverts ffe81d45322c and is based on a patch from Ming,
but with the list insert case covered as well.

Fixes: ffe81d45322c ("blk-mq: fix corruption with direct issue")
Cc: stable@vger.kernel.org
Suggested-by: Ming Lei <ming.lei@redhat.com>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
5 years agonvmet-rdma: fix response use after free
Israel Rukshin [Wed, 5 Dec 2018 16:54:57 +0000 (16:54 +0000)]
nvmet-rdma: fix response use after free

nvmet_rdma_release_rsp() may free the response before using it at error
flow.

Fixes: 8407879 ("nvmet-rdma: fix possible bogus dereference under heavy load")
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agonvme: validate controller state before rescheduling keep alive
James Smart [Wed, 28 Nov 2018 01:04:44 +0000 (17:04 -0800)]
nvme: validate controller state before rescheduling keep alive

Delete operations are seeing NULL pointer references in call_timer_fn.
Tracking these back, the timer appears to be the keep alive timer.

nvme_keep_alive_work() which is tied to the timer that is cancelled
by nvme_stop_keep_alive(), simply starts the keep alive io but doesn't
wait for it's completion. So nvme_stop_keep_alive() only stops a timer
when it's pending. When a keep alive is in flight, there is no timer
running and the nvme_stop_keep_alive() will have no affect on the keep
alive io. Thus, if the io completes successfully, the keep alive timer
will be rescheduled.   In the failure case, delete is called, the
controller state is changed, the nvme_stop_keep_alive() is called while
the io is outstanding, and the delete path continues on. The keep
alive happens to successfully complete before the delete paths mark it
as aborted as part of the queue termination, so the timer is restarted.
The delete paths then tear down the controller, and later on the timer
code fires and the timer entry is now corrupt.

Fix by validating the controller state before rescheduling the keep
alive. Testing with the fix has confirmed the condition above was hit.

Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
5 years agoblock, bfq: fix decrement of num_active_groups
Paolo Valente [Thu, 6 Dec 2018 18:18:18 +0000 (19:18 +0100)]
block, bfq: fix decrement of num_active_groups

Since commit '2d29c9f89fcd ("block, bfq: improve asymmetric scenarios
detection")', if there are process groups with I/O requests waiting for
completion, then BFQ tags the scenario as 'asymmetric'. This detection
is needed for preserving service guarantees (for details, see comments
on the computation * of the variable asymmetric_scenario in the
function bfq_better_to_idle).

Unfortunately, commit '2d29c9f89fcd ("block, bfq: improve asymmetric
scenarios detection")' contains an error exactly in the updating of
the number of groups with I/O requests waiting for completion: if a
group has more than one descendant process, then the above number of
groups, which is renamed from num_active_groups to a more appropriate
num_groups_with_pending_reqs by this commit, may happen to be wrongly
decremented multiple times, namely every time one of the descendant
processes gets all its pending I/O requests completed.

A correct, complete solution should work as follows. Consider a group
that is inactive, i.e., that has no descendant process with pending
I/O inside BFQ queues. Then suppose that num_groups_with_pending_reqs
is still accounting for this group, because the group still has some
descendant process with some I/O request still in
flight. num_groups_with_pending_reqs should be decremented when the
in-flight request of the last descendant process is finally completed
(assuming that nothing else has changed for the group in the meantime,
in terms of composition of the group and active/inactive state of
child groups and processes). To accomplish this, an additional
pending-request counter must be added to entities, and must be
updated correctly.

To avoid this additional field and operations, this commit resorts to
the following tradeoff between simplicity and accuracy: for an
inactive group that is still counted in num_groups_with_pending_reqs,
this commit decrements num_groups_with_pending_reqs when the first
descendant process of the group remains with no request waiting for
completion.

This simplified scheme provides a fix to the unbalanced decrements
introduced by 2d29c9f89fcd. Since this error was also caused by lack
of comments on this non-trivial issue, this commit also adds related
comments.

Fixes: 2d29c9f89fcd ("block, bfq: improve asymmetric scenarios detection")
Reported-by: Steven Barrett <steven@liquorix.net>
Tested-by: Steven Barrett <steven@liquorix.net>
Tested-by: Lucjan Lucjanov <lucjan.lucjanov@gmail.com>
Reviewed-by: Federico Motta <federico@willer.it>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
5 years agoMerge tag 'gnss-4.20-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan...
Greg Kroah-Hartman [Fri, 7 Dec 2018 13:05:28 +0000 (14:05 +0100)]
Merge tag 'gnss-4.20-rc6' of https://git./linux/kernel/git/johan/gnss into char-misc-linus

Johan writes:

GNSS fixes for 4.20-rc6

Here's a fix for a broken activation retry loop in the sirf driver.

Included are also two MAINTAINERS updates.

All have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>
* tag 'gnss-4.20-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss:
  MAINTAINERS: exclude gnss from SIRFPRIMA2 regex matching
  MAINTAINERS: add gnss scm tree
  gnss: sirf: fix activation retry handling

5 years agoCIFS: Avoid returning EBUSY to upper layer VFS
Long Li [Thu, 6 Dec 2018 04:51:06 +0000 (04:51 +0000)]
CIFS: Avoid returning EBUSY to upper layer VFS

EBUSY is not handled by VFS, and will be passed to user-mode. This is not
correct as we need to wait for more credits.

This patch also fixes a bug where rsize or wsize is used uninitialized when
the call to server->ops->wait_mtu_credits() fails.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
5 years agonet/mlx5: Expose packet based credit mode
Danit Goldberg [Fri, 30 Nov 2018 11:22:04 +0000 (13:22 +0200)]
net/mlx5: Expose packet based credit mode

Packet based credit mode bit determines whether the credit mode
is done per message or packet. Expose the QP creation flag and
the HCA capability.

Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agocrypto: user - Disable statistics interface
Herbert Xu [Fri, 7 Dec 2018 05:56:08 +0000 (13:56 +0800)]
crypto: user - Disable statistics interface

Since this user-space API is still undergoing significant changes,
this patch disables it for the current merge window.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
5 years agoIB/rxe: Utilize generic function to validate port number
Yuval Shaia [Thu, 6 Dec 2018 14:02:34 +0000 (16:02 +0200)]
IB/rxe: Utilize generic function to validate port number

Utilize rdma_is_port_valid to validate the given port.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/rxe: Make function rxe_pool_cleanup return void
Yuval Shaia [Thu, 6 Dec 2018 11:04:38 +0000 (13:04 +0200)]
IB/rxe: Make function rxe_pool_cleanup return void

Since the function always returns 0 make it void.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/uverbs: Fix typo in string concatenation macro
Leon Romanovsky [Thu, 6 Dec 2018 10:19:05 +0000 (12:19 +0200)]
RDMA/uverbs: Fix typo in string concatenation macro

Update UVERBS_OBJECT() macro to properly concatenate the object name.

Fixes: e502a864c352 ("IB/core: Introduce DECLARE_UVERBS_GLOBAL_METHODS")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoMerge tag 'drm-fixes-2018-12-07' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 7 Dec 2018 03:35:50 +0000 (19:35 -0800)]
Merge tag 'drm-fixes-2018-12-07' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "There's a bit more in here than I'd like, and I'm hoping things calm
  down when I'm out.

  msm:
   - a bunch of display fixes for the new DPU
   - a couple of command submission fixes

  omap:
   - some DSI fixes

  ast:
   - driver unload crash fix

  core:
   - fix the lease uevent so userspace can distinguish it

  amd:
   - fix a bpc regression
   - fix lru handling regression
   - fixed firmware support for new GPUs
   - power management fixes for vega20"

* tag 'drm-fixes-2018-12-07' of git://anongit.freedesktop.org/drm/drm: (37 commits)
  drm/ast: Fix connector leak during driver unload
  drm/amdgpu/vcn: Update vcn.cur_state during suspend
  drm/amd/display: Fix overflow/truncation from strncpy.
  drm/amd/powerplay: improve OD code robustness
  drm/amdgpu: enlarge maximum waiting time of KIQ
  drm/fb-helper: Fix typo in parameter description
  drm/amd/powerplay: support SoftMin/Max setting for some specific DPM
  drm/amd/powerplay: issue pre-display settings for display change event
  drm/amd/powerplay: support new pptable upload on Vega20
  drm/amdgpu/gmc8: always load MC firmware in the driver
  drm/amdgpu/gmc8: update MC firmware for polaris
  drm/amdgpu: update mc firmware image for polaris12 variants
  drm/msm: Fix error return checking
  drm/msm/dpu: Ignore alpha for XBGR8888 format
  drm/msm: dpu: Fix "WARNING: invalid free of devm_ allocated data"
  drm/msm/hdmi: Drop pointless static qualifier in msm_hdmi_bind()
  drm/msm: Move fence put to where failure occurs
  drm/msm: dpu: Don't set legacy plane->crtc pointer
  drm/msm/gpu: Don't map command buffers with nr_relocs equal to 0
  drm/msm/hdmi: Enable HPD after HDMI IRQ is set up
  ...

5 years agoIB/mlx5: Enable TX on a DEVX flow table
Alex Vesker [Tue, 4 Dec 2018 13:34:05 +0000 (15:34 +0200)]
IB/mlx5: Enable TX on a DEVX flow table

Flow table can be passed as a DEVX object which is a valid destination in
an EGRESS flow. Fix the original code to allow that.

Fixes: a7ee18bdee83 ("RDMA/mlx5: Allow creating a matcher for a NIC TX flow table")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agomlx4: Use snprintf instead of complicated strcpy
Qian Cai [Fri, 30 Nov 2018 02:18:07 +0000 (21:18 -0500)]
mlx4: Use snprintf instead of complicated strcpy

This fixes a compilation warning in sysfs.c

drivers/infiniband/hw/mlx4/sysfs.c:360:2: warning: 'strncpy' output may be
truncated copying 8 bytes from a string of length 31
[-Wstringop-truncation]

By eliminating the temporary stack buffer.

Signed-off-by: Qian Cai <cai@gmx.us>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/hfi1: Reduce lock contention on iowait_lock for sdma and pio
Mike Marciniszyn [Wed, 28 Nov 2018 18:33:00 +0000 (10:33 -0800)]
IB/hfi1: Reduce lock contention on iowait_lock for sdma and pio

Commit 4e045572e2c2 ("IB/hfi1: Add unique txwait_lock for txreq events")
laid the ground work to support per resource waiting locking.

This patch adds that with a lock unique to each sdma engine and pio
sendcontext and makes necessary changes for verbs, PSM, and vnic to use
the new locks.

This is particularly beneficial for smaller messages that will exhaust
resources at a faster rate.

Fixes: 7724105686e7 ("IB/hfi1: add driver files")
Reviewed-by: Gary Leshner <Gary.S.Leshner@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>
5 years agoIB/hfi1: Close VNIC sdma_progress sleep window
Mike Marciniszyn [Wed, 28 Nov 2018 18:32:48 +0000 (10:32 -0800)]
IB/hfi1: Close VNIC sdma_progress sleep window

The call to sdma_progress() is called outside the wait lock.

In this case, there is a race condition where sdma_progress() can return
false and the sdma_engine can idle.  If that happens, there will be no
more sdma interrupts to cause the wakeup and the vnic_sdma xmit will hang.

Fix by moving the lock to enclose the sdma_progress() call.

Also, delete the tx_retry. The need for this was removed by:
commit bcad29137a97 ("IB/hfi1: Serve the most starved iowait entry first")

Fixes: 64551ede6cd1 ("IB/hfi1: VNIC SDMA support")
Reviewed-by: Gary Leshner <Gary.S.Leshner@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>
5 years agoIB/hfi1: Allow the driver to initialize QP priv struct
Mike Marciniszyn [Wed, 28 Nov 2018 18:22:31 +0000 (10:22 -0800)]
IB/hfi1: Allow the driver to initialize QP priv struct

This patch adds an interface to allow the driver to initialize the QP priv
struct when the QP is created and after the qpn has been assigned.  A
field is added to the QP priv struct to reference the rcd and two new
files are added to contain the function to initialize the rcd field so
that more TID RDMA related code can be added here later.

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>
5 years agoIB/hfi1: Add OPFN and TID RDMA capability bits
Kaike Wan [Wed, 28 Nov 2018 18:22:20 +0000 (10:22 -0800)]
IB/hfi1: Add OPFN and TID RDMA capability bits

The OPFN and TID RDMA capability bits are added to allow users to control
which feature is enabled and disabled.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@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>
5 years agoIB/hfi1: Unreserve a reserved request when it is completed
Kaike Wan [Wed, 28 Nov 2018 18:22:09 +0000 (10:22 -0800)]
IB/hfi1: Unreserve a reserved request when it is completed

Currently, When a reserved operation is completed, its entry in the send
queue will not be unreserved, which leads to the miscalculation of
qp->s_avail and thus the triggering of a WARN_ON call trace. This patch
fixes the problem by unreserving the reserved operation when it is
completed.

Fixes: 856cc4c237ad ("IB/hfi1: Add the capability for reserved operations")
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>
5 years agoMerge tag 'nfs-for-4.20-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 7 Dec 2018 02:57:04 +0000 (18:57 -0800)]
Merge tag 'nfs-for-4.20-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "This is mainly fallout from the updates to the SUNRPC code that is
  being triggered from less common combinations of NFS mount options.

  Highlights include:

  Stable fixes:
   - Fix a page leak when using RPCSEC_GSS/krb5p to encrypt data.

  Bugfixes:
   - Fix a regression that causes the RPC receive code to hang
   - Fix call_connect_status() so that it handles tasks that got
     transmitted while queued waiting for the socket lock.
   - Fix a memory leak in call_encode()
   - Fix several other connect races.
   - Fix receive code error handling.
   - Use the discard iterator rather than MSG_TRUNC for compatibility
     with AF_UNIX/AF_LOCAL sockets.
   - nfs: don't dirty kernel pages read by direct-io
   - pnfs/Flexfiles fix to enforce per-mirror stateid only for NFSv4
     data servers"

* tag 'nfs-for-4.20-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Don't force a redundant disconnection in xs_read_stream()
  SUNRPC: Fix up socket polling
  SUNRPC: Use the discard iterator rather than MSG_TRUNC
  SUNRPC: Treat EFAULT as a truncated message in xs_read_stream_request()
  SUNRPC: Fix up handling of the XDRBUF_SPARSE_PAGES flag
  SUNRPC: Fix RPC receive hangs
  SUNRPC: Fix a potential race in xprt_connect()
  SUNRPC: Fix a memory leak in call_encode()
  SUNRPC: Fix leak of krb5p encode pages
  SUNRPC: call_connect_status() must handle tasks that got transmitted
  nfs: don't dirty kernel pages read by direct-io
  flexfiles: enforce per-mirror stateid only for v4 DSes

5 years agoIB/hfi1: Consider LMC in 16B/bypass ingress packet check
Ashutosh Dixit [Wed, 28 Nov 2018 18:19:47 +0000 (10:19 -0800)]
IB/hfi1: Consider LMC in 16B/bypass ingress packet check

Ingress packet check for 16B/bypass packets should consider the port
LMC. Not doing this will result in packets sent to the LMC LIDs getting
dropped. The check is implemented in HW for 9B packets.

Reviewed-by: Mike Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/hfi1: Incorrect sizing of sge for PIO will OOPs
Michael J. Ruhl [Wed, 28 Nov 2018 18:19:36 +0000 (10:19 -0800)]
IB/hfi1: Incorrect sizing of sge for PIO will OOPs

An incorrect sge sizing in the HFI PIO path will cause an OOPs similar to
this:

BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [] hfi1_verbs_send_pio+0x3d8/0x530 [hfi1]
PGD 0
Oops: 0000 1 SMP
 Call Trace:
 ? hfi1_verbs_send_dma+0xad0/0xad0 [hfi1]
 hfi1_verbs_send+0xdf/0x250 [hfi1]
 ? make_rc_ack+0xa80/0xa80 [hfi1]
 hfi1_do_send+0x192/0x430 [hfi1]
 hfi1_do_send_from_rvt+0x10/0x20 [hfi1]
 rvt_post_send+0x369/0x820 [rdmavt]
 ib_uverbs_post_send+0x317/0x570 [ib_uverbs]
 ib_uverbs_write+0x26f/0x420 [ib_uverbs]
 ? security_file_permission+0x21/0xa0
 vfs_write+0xbd/0x1e0
 ? mntput+0x24/0x40
 SyS_write+0x7f/0xe0
 system_call_fastpath+0x16/0x1b

Fix by adding the missing sizing check to correctly determine the sge
length.

Fixes: 7724105686e7 ("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>
5 years agoIB/hfi1: Limit VNIC use of SDMA engines to the available count
Michael J. Ruhl [Wed, 28 Nov 2018 18:19:25 +0000 (10:19 -0800)]
IB/hfi1: Limit VNIC use of SDMA engines to the available count

VNIC assumes that all SDMA engines have been configured for use.  This is
not necessarily true (i.e. if the count was constrained by the module
parameter).

Update VNICs usage to use the configured count, rather than the hardware
count.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Gary Leshner <gary.s.leshner@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>
5 years agoIB/hfi1: Correctly process FECN and BECN in packets
Mitko Haralanov [Wed, 28 Nov 2018 18:19:15 +0000 (10:19 -0800)]
IB/hfi1: Correctly process FECN and BECN in packets

A CA is supposed to ignore FECN bits in multicast, ACK, and CNP
packets. This patch corrects the behavior of the HFI1 driver in this
regard by ignoring FECNs in those packet types.

While fixing the above behavior, fix the extraction of the FECN and BECN
bits from the packet headers for both 9B and 16B packets.

Furthermore, this patch corrects the driver's response to a FECN in RDMA
READ RESPONSE packets. Instead of sending an "empty" ACK, the driver now
sends a CNP packet. While editing that code path, add the missing trace
for CNP packets.

Fixes: 88733e3b8450 ("IB/hfi1: Add 16B UD support")
Fixes: f59fb9e05109 ("IB/hfi1: Fix handling of FECN marked multicast packet")
Reviewed-by: Kaike Wan <kaike.wan@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>