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Author SHA1 Message Date
David S. Miller
086cb6a412 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains a large batch with Netfilter fixes for
your net tree, they are:

1) Two patches to solve conntrack garbage collector cpu hogging, one to
   remove GC_MAX_EVICTS and another to look at the ratio (scanned entries
   vs. evicted entries) to make a decision on whether to reduce or not
   the scanning interval. From Florian Westphal.

2) Two patches to fix incorrect set element counting if NLM_F_EXCL is
   is not set. Moreover, don't decrenent set->nelems from abort patch
   if -ENFILE which leaks a spare slot in the set. This includes a
   patch to deconstify the set walk callback to update set->ndeact.

3) Two fixes for the fwmark_reflect sysctl feature: Propagate mark to
   reply packets both from nf_reject and local stack, from Pau Espin Pedrol.

4) Fix incorrect handling of loopback traffic in rpfilter and nf_tables
   fib expression, from Liping Zhang.

5) Fix oops on stateful objects netlink dump, when no filter is specified.
   Also from Liping Zhang.

6) Fix a build error if proc is not available in ipt_CLUSTERIP, related
   to fix that was applied in the previous batch for net. From Arnd Bergmann.

7) Fix lack of string validation in table, chain, set and stateful
   object names in nf_tables, from Liping Zhang. Moreover, restrict
   maximum log prefix length to 127 bytes, otherwise explicitly bail
   out.

8) Two patches to fix spelling and typos in nf_tables uapi header file
   and Kconfig, patches from Alexander Alemayhu and William Breathitt Gray.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-01-26 12:54:50 -05:00
Liping Zhang
5ce6b04ce9 netfilter: nft_log: restrict the log prefix length to 127 
First, log prefix will be truncated to NF_LOG_PREFIXLEN-1, i.e. 127,
at nf_log_packet(), so the extra part is useless.

Second, after adding a log rule with a very very long prefix, we will
fail to dump the nft rules after this _special_ one, but acctually,
they do exist. For example:
  # name_65000=$(printf "%0.sQ" {1..65000})
  # nft add rule filter output log prefix "$name_65000"
  # nft add rule filter output counter
  # nft add rule filter output counter
  # nft list chain filter output
  table ip filter {
      chain output {
          type filter hook output priority 0; policy accept;
      }
  }

So now, restrict the log prefix length to NF_LOG_PREFIXLEN-1.

Fixes: 96518518cc ("netfilter: add nftables")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2017-01-24 21:46:29 +01:00
Daniel Borkmann
f1f7714ea5 bpf: rework prog_digest into prog_tag 
Commit 7bd509e311 ("bpf: add prog_digest and expose it via
fdinfo/netlink") was recently discussed, partially due to
admittedly suboptimal name of "prog_digest" in combination
with sha1 hash usage, thus inevitably and rightfully concerns
about its security in terms of collision resistance were
raised with regards to use-cases.

The intended use cases are for debugging resp. introspection
only for providing a stable "tag" over the instruction sequence
that both kernel and user space can calculate independently.
It's not usable at all for making a security relevant decision.
So collisions where two different instruction sequences generate
the same tag can happen, but ideally at a rather low rate. The
"tag" will be dumped in hex and is short enough to introspect
in tracepoints or kallsyms output along with other data such
as stack trace, etc. Thus, this patch performs a rename into
prog_tag and truncates the tag to a short output (64 bits) to
make it obvious it's not collision-free.

Should in future a hash or facility be needed with a security
relevant focus, then we can think about requirements, constraints,
etc that would fit to that situation. For now, rework the exposed
parts for the current use cases as long as nothing has been
released yet. Tested on x86_64 and s390x.

Fixes: 7bd509e311 ("bpf: add prog_digest and expose it via fdinfo/netlink")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-01-16 14:03:31 -05:00
Alexander Alemayhu
d7f5762c5e netfilter: nf_tables: fix spelling mistakes 
o s/numerice/numeric
o s/opertaor/operator

Signed-off-by: Alexander Alemayhu <alexander@alemayhu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2017-01-16 14:23:01 +01:00
David S. Miller
1a717fcf8b We have a number of fixes, in part because I was late 
in actually sending them out - will try to do better in
 the future:
  * handle VHT opmode properly when hostapd is controlling
    full station state
  * two fixes for minimum channel width in mac80211
  * don't leave SMPS set to junk in HT capabilities
  * fix headroom when forwarding mesh packets, recently
    broken by another fix that failed to take into account
    frame encryption
  * fix the TID in null-data packets indicating EOSP (end
    of service period) in U-APSD
  * prevent attempting to use (and then failing which
    results in crashes) TXQs on stations that aren't added
    to the driver yet
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Merge tag 'mac80211-for-davem-2017-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
We have a number of fixes, in part because I was late
in actually sending them out - will try to do better in
the future:
 * handle VHT opmode properly when hostapd is controlling
   full station state
 * two fixes for minimum channel width in mac80211
 * don't leave SMPS set to junk in HT capabilities
 * fix headroom when forwarding mesh packets, recently
   broken by another fix that failed to take into account
   frame encryption
 * fix the TID in null-data packets indicating EOSP (end
   of service period) in U-APSD
 * prevent attempting to use (and then failing which
   results in crashes) TXQs on stations that aren't added
   to the driver yet
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
 2017-01-15 22:17:59 -05:00
Beni Lev
06f7c88c10 cfg80211: consider VHT opmode on station update 
Currently, this attribute is only fetched on station addition, but
not on station change. Since this info is only present in the assoc
request, with full station state support in the driver it cannot be
present when the station is added.

Thus, add support for changing the VHT opmode on station update if
done before (or while) the station is marked as associated. After
this, ignore it, since it used to be ignored.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2017-01-11 16:34:25 +01:00
Mike Frysinger
575b1967e1 timerfd: export defines to userspace 
Since userspace is expected to call timerfd syscalls directly with these
flags/ioctls, make sure we export them so they don't have to duplicate
the values themselves.

Link: http://lkml.kernel.org/r/20161219064052.7196-1-vapier@gentoo.org
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2017-01-10 18:31:55 -08:00
Vincent Pelletier
96a420d2d3 usb: gadget: f_fs: Document eventfd effect on descriptor format. 
When FUNCTIONFS_EVENTFD flag is set, __ffs_data_got_descs reads a 32bits,
little-endian value right after the fixed structure header, and passes it
to eventfd_ctx_fdget. Document this.

Also, rephrase a comment to be affirmative about the role of string
descriptor at index 0. Ref: USB 2.0 spec paragraph "9.6.7 String", and
also checked to still be current in USB 3.0 spec paragraph "9.6.9 String".

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
 2017-01-02 10:55:28 +02:00
Linus Torvalds
eb254f323b Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 cache allocation interface from Thomas Gleixner:
 "This provides support for Intel's Cache Allocation Technology, a cache
  partitioning mechanism.

  The interface is odd, but the hardware interface of that CAT stuff is
  odd as well.

  We tried hard to come up with an abstraction, but that only allows
  rather simple partitioning, but no way of sharing and dealing with the
  per package nature of this mechanism.

  In the end we decided to expose the allocation bitmaps directly so all
  combinations of the hardware can be utilized.

  There are two ways of associating a cache partition:

   - Task

     A task can be added to a resource group. It uses the cache
     partition associated to the group.

   - CPU

     All tasks which are not member of a resource group use the group to
     which the CPU they are running on is associated with.

     That allows for simple CPU based partitioning schemes.

  The main expected user sare:

   - Virtualization so a VM can only trash only the associated part of
     the cash w/o disturbing others

   - Real-Time systems to seperate RT and general workloads.

   - Latency sensitive enterprise workloads

   - In theory this also can be used to protect against cache side
     channel attacks"

[ Intel RDT is "Resource Director Technology". The interface really is
  rather odd and very specific, which delayed this pull request while I
  was thinking about it. The pull request itself came in early during
  the merge window, I just delayed it until things had calmed down and I
  had more time.

  But people tell me they'll use this, and the good news is that it is
  _so_ specific that it's rather independent of anything else, and no
  user is going to depend on the interface since it's pretty rare. So if
  push comes to shove, we can just remove the interface and nothing will
  break ]

* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  x86/intel_rdt: Implement show_options() for resctrlfs
  x86/intel_rdt: Call intel_rdt_sched_in() with preemption disabled
  x86/intel_rdt: Update task closid immediately on CPU in rmdir and unmount
  x86/intel_rdt: Fix setting of closid when adding CPUs to a group
  x86/intel_rdt: Update percpu closid immeditately on CPUs affected by changee
  x86/intel_rdt: Reset per cpu closids on unmount
  x86/intel_rdt: Select KERNFS when enabling INTEL_RDT_A
  x86/intel_rdt: Prevent deadlock against hotplug lock
  x86/intel_rdt: Protect info directory from removal
  x86/intel_rdt: Add info files to Documentation
  x86/intel_rdt: Export the minimum number of set mask bits in sysfs
  x86/intel_rdt: Propagate error in rdt_mount() properly
  x86/intel_rdt: Add a missing #include
  MAINTAINERS: Add maintainer for Intel RDT resource allocation
  x86/intel_rdt: Add scheduler hook
  x86/intel_rdt: Add schemata file
  x86/intel_rdt: Add tasks files
  x86/intel_rdt: Add cpus file
  x86/intel_rdt: Add mkdir to resctrl file system
  x86/intel_rdt: Add "info" files to resctrl file system
  ...
 2016-12-22 09:25:45 -08:00
Linus Torvalds
bd9999cd6a media updates for v4.10-rc1 
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Merge tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new Mediatek drivers: mtk-mdp and mtk-vcodec

 - some additions at the media documentation

 - the CEC core and drivers were promoted from staging to mainstream

 - some cleanups at the DVB core

 - the LIRC serial driver got promoted from staging to mainstream

 - added a driver for Renesas R-Car FDP1 driver

 - add DVBv5 statistics support to mn88473 driver

 - several fixes related to printk continuation lines

 - add support for HSV encoding formats

 - lots of other cleanups, fixups and driver improvements.

* tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (496 commits)
  [media] v4l: tvp5150: Add missing break in set control handler
  [media] v4l: tvp5150: Don't inline the tvp5150_selmux() function
  [media] v4l: tvp5150: Compile tvp5150_link_setup out if !CONFIG_MEDIA_CONTROLLER
  [media] em28xx: don't store usb_device at struct em28xx
  [media] em28xx: use usb_interface for dev_foo() calls
  [media] em28xx: don't change the device's name
  [media] mn88472: fix chip id check on probe
  [media] mn88473: fix chip id check on probe
  [media] lirc: fix error paths in lirc_cdev_add()
  [media] s5p-mfc: Add support for MFC v8 available in Exynos 5433 SoCs
  [media] s5p-mfc: Rework clock handling
  [media] s5p-mfc: Don't keep clock prepared all the time
  [media] s5p-mfc: Kill all IS_ERR_OR_NULL in clocks management code
  [media] s5p-mfc: Remove dead conditional code
  [media] s5p-mfc: Ensure that clock is disabled before turning power off
  [media] s5p-mfc: Remove special clock rate management
  [media] s5p-mfc: Use printk_ratelimited for reporting ioctl errors
  [media] s5p-mfc: Set DMA_ATTR_ALLOC_SINGLE_PAGES
  [media] vivid: Set color_enc on HSV formats
  [media] v4l2-tpg: Init hv_enc field with a valid value
  ...
 2016-12-16 09:39:16 -08:00
Linus Torvalds
ed3c5a0be3 virtio, vhost: new device, fixes, speedups 
This includes the new virtio crypto device, and fixes all over the
 place.  In particular enabling endian-ness checks for sparse builds
 found some bugs which this fixes.  And it appears that everyone is in
 agreement that disabling endian-ness sparse checks shouldn't be
 necessary any longer.
 
 So this enables them for everyone, and drops __CHECK_ENDIAN__
 and __bitwise__ APIs.
 
 IRQ handling in virtio has been refactored somewhat, the
 larger switch to IRQ_SHARED will have to wait as
 it proved too aggressive.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio, vhost: new device, fixes, speedups

  This includes the new virtio crypto device, and fixes all over the
  place. In particular enabling endian-ness checks for sparse builds
  found some bugs which this fixes. And it appears that everyone is in
  agreement that disabling endian-ness sparse checks shouldn't be
  necessary any longer.

  So this enables them for everyone, and drops the __CHECK_ENDIAN__ and
  __bitwise__ APIs.

  IRQ handling in virtio has been refactored somewhat, the larger switch
  to IRQ_SHARED will have to wait as it proved too aggressive"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits)
  Makefile: drop -D__CHECK_ENDIAN__ from cflags
  fs/logfs: drop __CHECK_ENDIAN__
  Documentation/sparse: drop __CHECK_ENDIAN__
  linux: drop __bitwise__ everywhere
  checkpatch: replace __bitwise__ with __bitwise
  Documentation/sparse: drop __bitwise__
  tools: enable endian checks for all sparse builds
  linux/types.h: enable endian checks for all sparse builds
  virtio_mmio: Set dev.release() to avoid warning
  vhost: remove unused feature bit
  virtio_ring: fix description of virtqueue_get_buf
  vhost/scsi: Remove unused but set variable
  tools/virtio: use {READ,WRITE}_ONCE() in uaccess.h
  vringh: kill off ACCESS_ONCE()
  tools/virtio: fix READ_ONCE()
  crypto: add virtio-crypto driver
  vhost: cache used event for better performance
  vsock: lookup and setup guest_cid inside vhost_vsock_lock
  virtio_pci: split vp_try_to_find_vqs into INTx and MSI-X variants
  virtio_pci: merge vp_free_vectors into vp_del_vqs
  ...
 2016-12-15 18:13:41 -08:00
Michael S. Tsirkin
9efeccacd3 linux: drop __bitwise__ everywhere 
__bitwise__ used to mean "yes, please enable sparse checks
unconditionally", but now that we dropped __CHECK_ENDIAN__
__bitwise is exactly the same.
There aren't many users, replace it by __bitwise everywhere.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Akced-by: Lee Duncan <lduncan@suse.com>
 2016-12-16 00:13:41 +02:00
Michael S. Tsirkin
05de97003c linux/types.h: enable endian checks for all sparse builds 
By now, linux is mostly endian-clean. Enabling endian-ness
checks for everyone produces about 200 new sparse warnings for me -
less than 10% over the 2000 sparse warnings already there.

Not a big deal, OTOH enabling this helps people notice
they are introducing new bugs.

So let's just drop __CHECK_ENDIAN__. Follow-up patches
can drop distinction between __bitwise and __bitwise__.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2016-12-16 00:13:39 +02:00
Jason Wang
8d390464bf vhost: remove unused feature bit 
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2016-12-16 00:13:38 +02:00
Gonglei
dbaf0624ff crypto: add virtio-crypto driver 
This patch introduces virtio-crypto driver for Linux Kernel.

The virtio crypto device is a virtual cryptography device
as well as a kind of virtual hardware accelerator for
virtual machines. The encryption anddecryption requests
are placed in the data queue and are ultimately handled by
thebackend crypto accelerators. The second queue is the
control queue used to create or destroy sessions for
symmetric algorithms and will control some advanced features
in the future. The virtio crypto device provides the following
cryptoservices: CIPHER, MAC, HASH, and AEAD.

For more information about virtio-crypto device, please see:
  http://qemu-project.org/Features/VirtioCrypto

CC: Michael S. Tsirkin <mst@redhat.com>
CC: Cornelia Huck <cornelia.huck@de.ibm.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Halil Pasic <pasic@linux.vnet.ibm.com>
CC: David S. Miller <davem@davemloft.net>
CC: Zeng Xin <xin.zeng@intel.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2016-12-16 00:13:32 +02:00
Linus Torvalds
0ab7b12c49 pci-v4.10-changes 
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Merge tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes:

   - add support for PCI on ARM64 boxes with ACPI. We already had this
     for theoretical spec-compliant hardware; now we're adding quirks
     for the actual hardware (Cavium, HiSilicon, Qualcomm, X-Gene)

   - add runtime PM support for hotplug ports

   - enable runtime suspend for Intel UHCI that uses platform-specific
     wakeup signaling

   - add yet another host bridge registration interface. We hope this is
     extensible enough to subsume the others

   - expose device revision in sysfs for DRM

   - to avoid device conflicts, make sure any VF BAR updates are done
     before enabling the VF

   - avoid unnecessary link retrains for ASPM

   - allow INTx masking on Mellanox devices that support it

   - allow access to non-standard VPD for Chelsio devices

   - update Broadcom iProc support for PAXB v2, PAXC v2, inbound DMA,
     etc

   - update Rockchip support for max-link-speed

   - add NVIDIA Tegra210 support

   - add Layerscape LS1046a support

   - update R-Car compatibility strings

   - add Qualcomm MSM8996 support

   - remove some uninformative bootup messages"

* tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (115 commits)
  PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3)
  PCI: Expand "VPD access disabled" quirk message
  PCI: pciehp: Remove loading message
  PCI: hotplug: Remove hotplug core message
  PCI: Remove service driver load/unload messages
  PCI/AER: Log AER IRQ when claiming Root Port
  PCI/AER: Log errors with PCI device, not PCIe service device
  PCI/AER: Remove unused version macros
  PCI/PME: Log PME IRQ when claiming Root Port
  PCI/PME: Drop unused support for PMEs from Root Complex Event Collectors
  PCI: Move config space size macros to pci_regs.h
  x86/platform/intel-mid: Constify mid_pci_platform_pm
  PCI/ASPM: Don't retrain link if ASPM not possible
  PCI: iproc: Skip check for legacy IRQ on PAXC buses
  PCI: pciehp: Leave power indicator on when enabling already-enabled slot
  PCI: pciehp: Prioritize data-link event over presence detect
  PCI: rcar: Add gen3 fallback compatibility string for pcie-rcar
  PCI: rcar: Use gen2 fallback compatibility last
  PCI: rcar-gen2: Use gen2 fallback compatibility last
  PCI: rockchip: Move the deassert of pm/aclk/pclk after phy_init()
  ..
 2016-12-15 12:46:48 -08:00
Mauro Carvalho Chehab
65390ea01c Merge branch 'patchwork' into v4l_for_linus 
* patchwork: (496 commits)
  [media] v4l: tvp5150: Add missing break in set control handler
  [media] v4l: tvp5150: Don't inline the tvp5150_selmux() function
  [media] v4l: tvp5150: Compile tvp5150_link_setup out if !CONFIG_MEDIA_CONTROLLER
  [media] em28xx: don't store usb_device at struct em28xx
  [media] em28xx: use usb_interface for dev_foo() calls
  [media] em28xx: don't change the device's name
  [media] mn88472: fix chip id check on probe
  [media] mn88473: fix chip id check on probe
  [media] lirc: fix error paths in lirc_cdev_add()
  [media] s5p-mfc: Add support for MFC v8 available in Exynos 5433 SoCs
  [media] s5p-mfc: Rework clock handling
  [media] s5p-mfc: Don't keep clock prepared all the time
  [media] s5p-mfc: Kill all IS_ERR_OR_NULL in clocks management code
  [media] s5p-mfc: Remove dead conditional code
  [media] s5p-mfc: Ensure that clock is disabled before turning power off
  [media] s5p-mfc: Remove special clock rate management
  [media] s5p-mfc: Use printk_ratelimited for reporting ioctl errors
  [media] s5p-mfc: Set DMA_ATTR_ALLOC_SINGLE_PAGES
  [media] vivid: Set color_enc on HSV formats
  [media] v4l2-tpg: Init hv_enc field with a valid value
  ...
 2016-12-15 08:38:35 -02:00
Linus Torvalds
dcdaa2f948 Merge branch 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit 
Pull audit updates from Paul Moore:
 "After the small number of patches for v4.9, we've got a much bigger
  pile for v4.10.

  The bulk of these patches involve a rework of the audit backlog queue
  to enable us to move the netlink multicasting out of the task/thread
  that generates the audit record and into the kernel thread that emits
  the record (just like we do for the audit unicast to auditd).

  While we were playing with the backlog queue(s) we fixed a number of
  other little problems with the code, and from all the testing so far
  things look to be in much better shape now. Doing this also allowed us
  to re-enable disabling IRQs for some netns operations ("netns: avoid
  disabling irq for netns id").

  The remaining patches fix some small problems that are well documented
  in the commit descriptions, as well as adding session ID filtering
  support"

* 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit:
  audit: use proper refcount locking on audit_sock
  netns: avoid disabling irq for netns id
  audit: don't ever sleep on a command record/message
  audit: handle a clean auditd shutdown with grace
  audit: wake up kauditd_thread after auditd registers
  audit: rework audit_log_start()
  audit: rework the audit queue handling
  audit: rename the queues and kauditd related functions
  audit: queue netlink multicast sends just like we do for unicast sends
  audit: fixup audit_init()
  audit: move kaudit thread start from auditd registration to kaudit init (#2)
  audit: add support for session ID user filter
  audit: fix formatting of AUDIT_CONFIG_CHANGE events
  audit: skip sessionid sentinel value when auto-incrementing
  audit: tame initialization warning len_abuf in audit_log_execve_info
  audit: less stack usage for /proc/*/loginuid
 2016-12-14 14:06:40 -08:00
Linus Torvalds
683b96f4d1 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 
Pull security subsystem updates from James Morris:
 "Generally pretty quiet for this release. Highlights:

  Yama:
   - allow ptrace access for original parent after re-parenting

  TPM:
   - add documentation
   - many bugfixes & cleanups
   - define a generic open() method for ascii & bios measurements

  Integrity:
   - Harden against malformed xattrs

  SELinux:
   - bugfixes & cleanups

  Smack:
   - Remove unnecessary smack_known_invalid label
   - Do not apply star label in smack_setprocattr hook
   - parse mnt opts after privileges check (fixes unpriv DoS vuln)"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (56 commits)
  Yama: allow access for the current ptrace parent
  tpm: adjust return value of tpm_read_log
  tpm: vtpm_proxy: conditionally call tpm_chip_unregister
  tpm: Fix handling of missing event log
  tpm: Check the bios_dir entry for NULL before accessing it
  tpm: return -ENODEV if np is not set
  tpm: cleanup of printk error messages
  tpm: replace of_find_node_by_name() with dev of_node property
  tpm: redefine read_log() to handle ACPI/OF at runtime
  tpm: fix the missing .owner in tpm_bios_measurements_ops
  tpm: have event log use the tpm_chip
  tpm: drop tpm1_chip_register(/unregister)
  tpm: replace dynamically allocated bios_dir with a static array
  tpm: replace symbolic permission with octal for securityfs files
  char: tpm: fix kerneldoc tpm2_unseal_trusted name typo
  tpm_tis: Allow tpm_tis to be bound using DT
  tpm, tpm_vtpm_proxy: add kdoc comments for VTPM_PROXY_IOC_NEW_DEV
  tpm: Only call pm_runtime_get_sync if device has a parent
  tpm: define a generic open() method for ascii & bios measurements
  Documentation: tpm: add the Physical TPM device tree binding documentation
  ...
 2016-12-14 13:57:44 -08:00
Linus Torvalds
0f1d6dfe03 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.10:

  API:
   - add skcipher walk interface
   - add asynchronous compression (acomp) interface
   - fix algif_aed AIO handling of zero buffer

  Algorithms:
   - fix unaligned access in poly1305
   - fix DRBG output to large buffers

  Drivers:
   - add support for iMX6UL to caam
   - fix givenc descriptors (used by IPsec) in caam
   - accelerated SHA256/SHA512 for ARM64 from OpenSSL
   - add SSE CRCT10DIF and CRC32 to ARM/ARM64
   - add AEAD support to Chelsio chcr
   - add Armada 8K support to omap-rng"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (148 commits)
  crypto: testmgr - fix overlap in chunked tests again
  crypto: arm/crc32 - accelerated support based on x86 SSE implementation
  crypto: arm64/crc32 - accelerated support based on x86 SSE implementation
  crypto: arm/crct10dif - port x86 SSE implementation to ARM
  crypto: arm64/crct10dif - port x86 SSE implementation to arm64
  crypto: testmgr - add/enhance test cases for CRC-T10DIF
  crypto: testmgr - avoid overlap in chunked tests
  crypto: chcr - checking for IS_ERR() instead of NULL
  crypto: caam - check caam_emi_slow instead of re-lookup platform
  crypto: algif_aead - fix AIO handling of zero buffer
  crypto: aes-ce - Make aes_simd_algs static
  crypto: algif_skcipher - set error code when kcalloc fails
  crypto: caam - make aamalg_desc a proper module
  crypto: caam - pass key buffers with typesafe pointers
  crypto: arm64/aes-ce-ccm - Fix AEAD decryption length
  MAINTAINERS: add crypto headers to crypto entry
  crypt: doc - remove misleading mention of async API
  crypto: doc - fix header file name
  crypto: api - fix comment typo
  crypto: skcipher - Add separate walker for AEAD decryption
  ..
 2016-12-14 13:31:29 -08:00
Linus Torvalds
775a2e29c3 . various fixes and improvements to request-based DM and DM multipath 
. some locking improvements in DM bufio
 
 . add Kconfig option to disable the DM block manager's extra locking
   which mainly serves as a developer tool
 
 . a few bug fixes to DM's persistent-data
 
 . a couple changes to prepare for multipage biovec support in the block
   layer
 
 . various improvements and cleanups in the DM core, DM cache, DM raid
   and DM crypt
 
 . add ability to have DM crypt use keys from the kernel key retention
   service
 
 . add a new "error_writes" feature to the DM flakey target, reads are
   left unchanged in this mode
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Merge tag 'dm-4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - various fixes and improvements to request-based DM and DM multipath

 - some locking improvements in DM bufio

 - add Kconfig option to disable the DM block manager's extra locking
   which mainly serves as a developer tool

 - a few bug fixes to DM's persistent-data

 - a couple changes to prepare for multipage biovec support in the block
   layer

 - various improvements and cleanups in the DM core, DM cache, DM raid
   and DM crypt

 - add ability to have DM crypt use keys from the kernel key retention
   service

 - add a new "error_writes" feature to the DM flakey target, reads are
   left unchanged in this mode

* tag 'dm-4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (40 commits)
  dm flakey: introduce "error_writes" feature
  dm cache policy smq: use hash_32() instead of hash_32_generic()
  dm crypt: reject key strings containing whitespace chars
  dm space map: always set ev if sm_ll_mutate() succeeds
  dm space map metadata: skip useless memcpy in metadata_ll_init_index()
  dm space map metadata: fix 'struct sm_metadata' leak on failed create
  Documentation: dm raid: define data_offset status field
  dm raid: fix discard support regression
  dm raid: don't allow "write behind" with raid4/5/6
  dm mpath: use hw_handler_params if attached hw_handler is same as requested
  dm crypt: add ability to use keys from the kernel key retention service
  dm array: remove a dead assignment in populate_ablock_with_values()
  dm ioctl: use offsetof() instead of open-coding it
  dm rq: simplify use_blk_mq initialization
  dm: use blk_set_queue_dying() in __dm_destroy()
  dm bufio: drop the lock when doing GFP_NOIO allocation
  dm bufio: don't take the lock in dm_bufio_shrink_count
  dm bufio: avoid sleeping while holding the dm_bufio lock
  dm table: simplify dm_table_determine_type()
  dm table: an 'all_blk_mq' table must be loaded for a blk-mq DM device
  ...
 2016-12-14 11:01:00 -08:00
Linus Torvalds
2a4c32edd3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 
Pull MD updates from Shaohua Li:

 - a raid5 writeback cache feature.

   The goal is to aggregate writes to make full stripe write and reduce
   read-modify-write. It's helpful for workload which does sequential
   write and follows fsync for example. This feature is experimental and
   off by default right now.

 - FAILFAST support.

   This fails IOs to broken raid disks quickly, so can improve latency.
   It's mainly for DASD storage, but some patches help normal raid array
   too.

 - support bad block for raid array with external metadata

 - AVX2 instruction support for raid6 parity calculation

 - normalize MD info output

 - add missing blktrace

 - other bug fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (66 commits)
  md: separate flags for superblock changes
  md: MD_RECOVERY_NEEDED is set for mddev->recovery
  md: takeover should clear unrelated bits
  md/r5cache: after recovery, increase journal seq by 10000
  md/raid5-cache: fix crc in rewrite_data_only_stripes()
  md/raid5-cache: no recovery is required when create super-block
  md: fix refcount problem on mddev when stopping array.
  md/r5cache: do r5c_update_log_state after log recovery
  md/raid5-cache: adjust the write position of the empty block if no data blocks
  md/r5cache: run_no_space_stripes() when R5C_LOG_CRITICAL == 0
  md/raid5: limit request size according to implementation limits
  md/raid5-cache: do not need to set STRIPE_PREREAD_ACTIVE repeatedly
  md/raid5-cache: remove the unnecessary next_cp_seq field from the r5l_log
  md/raid5-cache: release the stripe_head at the appropriate location
  md/raid5-cache: use ring add to prevent overflow
  md/raid5-cache: remove unnecessary function parameters
  raid5-cache: don't set STRIPE_R5C_PARTIAL_STRIPE flag while load stripe into cache
  raid5-cache: add another check conditon before replaying one stripe
  md/r5cache: enable IRQs on error path
  md/r5cache: handle alloc_page failure
  ...
 2016-12-14 10:58:17 -08:00
Linus Torvalds
5084fdf081 This merge request includes the dax-4.0-iomap-pmd branch which is 
needed for both ext4 and xfs dax changes to use iomap for DAX.  It
 also includes the fscrypt branch which is needed for ubifs encryption
 work as well as ext4 encryption and fscrypt cleanups.
 
 Lots of cleanups and bug fixes, especially making sure ext4 is robust
 against maliciously corrupted file systems --- especially maliciously
 corrupted xattr blocks and a maliciously corrupted superblock.  Also
 fix ext4 support for 64k block sizes so it works well on ppcle.  Fixed
 mbcache so we don't miss some common xattr blocks that can be merged.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "This merge request includes the dax-4.0-iomap-pmd branch which is
  needed for both ext4 and xfs dax changes to use iomap for DAX. It also
  includes the fscrypt branch which is needed for ubifs encryption work
  as well as ext4 encryption and fscrypt cleanups.

  Lots of cleanups and bug fixes, especially making sure ext4 is robust
  against maliciously corrupted file systems --- especially maliciously
  corrupted xattr blocks and a maliciously corrupted superblock. Also
  fix ext4 support for 64k block sizes so it works well on ppcle. Fixed
  mbcache so we don't miss some common xattr blocks that can be merged"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (86 commits)
  dax: Fix sleep in atomic contex in grab_mapping_entry()
  fscrypt: Rename FS_WRITE_PATH_FL to FS_CTX_HAS_BOUNCE_BUFFER_FL
  fscrypt: Delay bounce page pool allocation until needed
  fscrypt: Cleanup page locking requirements for fscrypt_{decrypt,encrypt}_page()
  fscrypt: Cleanup fscrypt_{decrypt,encrypt}_page()
  fscrypt: Never allocate fscrypt_ctx on in-place encryption
  fscrypt: Use correct index in decrypt path.
  fscrypt: move the policy flags and encryption mode definitions to uapi header
  fscrypt: move non-public structures and constants to fscrypt_private.h
  fscrypt: unexport fscrypt_initialize()
  fscrypt: rename get_crypt_info() to fscrypt_get_crypt_info()
  fscrypto: move ioctl processing more fully into common code
  fscrypto: remove unneeded Kconfig dependencies
  MAINTAINERS: fscrypto: recommend linux-fsdevel for fscrypto patches
  ext4: do not perform data journaling when data is encrypted
  ext4: return -ENOMEM instead of success
  ext4: reject inodes with negative size
  ext4: remove another test in ext4_alloc_file_blocks()
  Documentation: fix description of ext4's block_validity mount option
  ext4: fix checks for data=ordered and journal_async_commit options
  ...
 2016-12-14 09:17:42 -08:00
Linus Torvalds
f4000cd997 arm64 updates for 4.10: 
- struct thread_info moved off-stack (also touching
   include/linux/thread_info.h and include/linux/restart_block.h)
 
 - cpus_have_cap() reworked to avoid __builtin_constant_p() for static
   key use (also touching drivers/irqchip/irq-gic-v3.c)
 
 - Uprobes support (currently only for native 64-bit tasks)
 
 - Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1
   switching to a reserved page table
 
 - CPU capacity information passing via DT or sysfs (used by the
   scheduler)
 
 - Support for systems without FP/SIMD (IOW, kernel avoids touching these
   registers; there is no soft-float ABI, nor kernel emulation for
   AArch64 FP/SIMD)
 
 - Handling of hardware watchpoint with unaligned addresses, varied
   lengths and offsets from base
 
 - Use of the page table contiguous hint for kernel mappings
 
 - Hugetlb fixes for sizes involving the contiguous hint
 
 - Remove unnecessary I-cache invalidation in flush_cache_range()
 
 - CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1)
 
 - Boot-time checks for writable+executable kernel mappings
 
 - Simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart
   and make the arm64 kernel headers self-consistent (Xen headers patch
   merged separately)
 
 - Workaround for broken .inst support in certain binutils versions
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - struct thread_info moved off-stack (also touching
   include/linux/thread_info.h and include/linux/restart_block.h)

 - cpus_have_cap() reworked to avoid __builtin_constant_p() for static
   key use (also touching drivers/irqchip/irq-gic-v3.c)

 - uprobes support (currently only for native 64-bit tasks)

 - Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1
   switching to a reserved page table

 - CPU capacity information passing via DT or sysfs (used by the
   scheduler)

 - support for systems without FP/SIMD (IOW, kernel avoids touching
   these registers; there is no soft-float ABI, nor kernel emulation for
   AArch64 FP/SIMD)

 - handling of hardware watchpoint with unaligned addresses, varied
   lengths and offsets from base

 - use of the page table contiguous hint for kernel mappings

 - hugetlb fixes for sizes involving the contiguous hint

 - remove unnecessary I-cache invalidation in flush_cache_range()

 - CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1)

 - boot-time checks for writable+executable kernel mappings

 - simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart
   and make the arm64 kernel headers self-consistent (Xen headers patch
   merged separately)

 - Workaround for broken .inst support in certain binutils versions

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (60 commits)
  arm64: Disable PAN on uaccess_enable()
  arm64: Work around broken .inst when defective gas is detected
  arm64: Add detection code for broken .inst support in binutils
  arm64: Remove reference to asm/opcodes.h
  arm64: Get rid of asm/opcodes.h
  arm64: smp: Prevent raw_smp_processor_id() recursion
  arm64: head.S: Fix CNTHCTL_EL2 access on VHE system
  arm64: Remove I-cache invalidation from flush_cache_range()
  arm64: Enable HIBERNATION in defconfig
  arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN
  arm64: xen: Enable user access before a privcmd hvc call
  arm64: Handle faults caused by inadvertent user access with PAN enabled
  arm64: Disable TTBR0_EL1 during normal kernel execution
  arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1
  arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro
  arm64: Factor out PAN enabling/disabling into separate uaccess_* macros
  arm64: Update the synchronous external abort fault description
  selftests: arm64: add test for unaligned/inexact watchpoint handling
  arm64: Allow hw watchpoint of length 3,5,6 and 7
  arm64: hw_breakpoint: Handle inexact watchpoint addresses
  ...
 2016-12-13 16:39:21 -08:00
Linus Torvalds
93173b5bf2 Small release, the most interesting stuff is x86 nested virt improvements. 
x86: userspace can now hide nested VMX features from guests; nested
 VMX can now run Hyper-V in a guest; support for AVX512_4VNNIW and
 AVX512_FMAPS in KVM; infrastructure support for virtual Intel GPUs.
 
 PPC: support for KVM guests on POWER9; improved support for interrupt
 polling; optimizations and cleanups.
 
 s390: two small optimizations, more stuff is in flight and will be
 in 4.11.
 
 ARM: support for the GICv3 ITS on 32bit platforms.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "Small release, the most interesting stuff is x86 nested virt
  improvements.

  x86:
   - userspace can now hide nested VMX features from guests
   - nested VMX can now run Hyper-V in a guest
   - support for AVX512_4VNNIW and AVX512_FMAPS in KVM
   - infrastructure support for virtual Intel GPUs.

  PPC:
   - support for KVM guests on POWER9
   - improved support for interrupt polling
   - optimizations and cleanups.

  s390:
   - two small optimizations, more stuff is in flight and will be in
     4.11.

  ARM:
   - support for the GICv3 ITS on 32bit platforms"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (94 commits)
  arm64: KVM: pmu: Reset PMSELR_EL0.SEL to a sane value before entering the guest
  KVM: arm/arm64: timer: Check for properly initialized timer on init
  KVM: arm/arm64: vgic-v2: Limit ITARGETSR bits to number of VCPUs
  KVM: x86: Handle the kthread worker using the new API
  KVM: nVMX: invvpid handling improvements
  KVM: nVMX: check host CR3 on vmentry and vmexit
  KVM: nVMX: introduce nested_vmx_load_cr3 and call it on vmentry
  KVM: nVMX: propagate errors from prepare_vmcs02
  KVM: nVMX: fix CR3 load if L2 uses PAE paging and EPT
  KVM: nVMX: load GUEST_EFER after GUEST_CR0 during emulated VM-entry
  KVM: nVMX: generate MSR_IA32_CR{0,4}_FIXED1 from guest CPUID
  KVM: nVMX: fix checks on CR{0,4} during virtual VMX operation
  KVM: nVMX: support restore of VMX capability MSRs
  KVM: nVMX: generate non-true VMX MSRs based on true versions
  KVM: x86: Do not clear RFLAGS.TF when a singlestep trap occurs.
  KVM: x86: Add kvm_skip_emulated_instruction and use it.
  KVM: VMX: Move skip_emulated_instruction out of nested_vmx_check_vmcs12
  KVM: VMX: Reorder some skip_emulated_instruction calls
  KVM: x86: Add a return value to kvm_emulate_cpuid
  KVM: PPC: Book3S: Move prototypes for KVM functions into kvm_ppc.h
  ...
 2016-12-13 15:47:02 -08:00
Shaohua Li
20737738d3 Merge branch 'md-next' into md-linus 2016-12-13 12:40:15 -08:00
Linus Torvalds
72cca7baf4 Staging/IIO patches for 4.10-rc1 
Here's the "big" staging/iio pull request for 4.10-rc1.
 
 Not as big as 4.9 was, but still just over a thousand changes.  We
 almost broke even of lines added vs. removed, as the slicoss driver was
 removed (got a "clean" driver for the same hardware through the netdev
 tree), and some iio drivers were also dropped, but I think we ended up
 adding a few thousand lines to the source tree in the end.  Other than
 that it's a lot of minor fixes all over the place, nothing major stands
 out at all.
 
 All of these have been in linux-next for a while.  There will be a merge
 conflict with Al's vfs tree in the lustre code, but the resolution for
 that should be pretty simple, that too has been in linux-next.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here's the "big" staging/iio pull request for 4.10-rc1.

  Not as big as 4.9 was, but still just over a thousand changes. We
  almost broke even of lines added vs. removed, as the slicoss driver
  was removed (got a "clean" driver for the same hardware through the
  netdev tree), and some iio drivers were also dropped, but I think we
  ended up adding a few thousand lines to the source tree in the end.
  Other than that it's a lot of minor fixes all over the place, nothing
  major stands out at all.

  All of these have been in linux-next for a while. There will be a
  merge conflict with Al's vfs tree in the lustre code, but the
  resolution for that should be pretty simple, that too has been in
  linux-next"

* tag 'staging-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1002 commits)
  staging: comedi: comedidev.h: Document usage of 'detach' handler
  staging: fsl-mc: remove unnecessary info prints from bus driver
  staging: fsl-mc: add sysfs ABI doc
  staging/lustre/o2iblnd: Fix misspelled attemps->attempts
  staging/lustre/o2iblnd: Fix misspelling intialized->intialized
  staging/lustre: Convert all bare unsigned to unsigned int
  staging/lustre/socklnd: Fix whitespace problem
  staging/lustre/o2iblnd: Add missing space
  staging/lustre/lnetselftest: Fix potential integer overflow
  staging: greybus: audio_module: remove redundant OOM message
  staging: dgnc: Fix lines longer than 80 characters
  staging: dgnc: fix blank line after '{' warnings.
  staging/android: remove Sync Framework tasks from TODO
  staging/lustre/osc: Revert erroneous list_for_each_entry_safe use
  staging: slicoss: remove the staging driver
  staging: lustre: libcfs: remove lnet upcall code
  staging: lustre: remove set but unused variables
  staging: lustre: osc: set lock data for readahead lock
  staging: lustre: import: don't reconnect during connect interpret
  staging: lustre: clio: remove mtime check in vvp_io_fault_start()
  ...
 2016-12-13 11:35:00 -08:00
Linus Torvalds
03f8d4cca3 USB/PHY patches for 4.10-rc1 
Here's the big set of USB/PHY patches for 4.10-rc1.
 
 A number of new drivers are here in this set of changes.  We have a new
 USB controller type "mtu3", a new usb-serial driver, and the usual churn
 in the gadget subsystem and the xhci host controller driver, along with
 a few other new small drivers added.  And lots of little other changes
 all over the USB and PHY driver tree.  Full details are in the shortlog
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY updates from Greg KH:
 "Here's the big set of USB/PHY patches for 4.10-rc1.

  A number of new drivers are here in this set of changes. We have a new
  USB controller type "mtu3", a new usb-serial driver, and the usual
  churn in the gadget subsystem and the xhci host controller driver,
  along with a few other new small drivers added. And lots of little
  other changes all over the USB and PHY driver tree. Full details are
  in the shortlog

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

* tag 'usb-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (309 commits)
  USB: serial: option: add dlink dwm-158
  USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041
  USB: OHCI: nxp: fix code warnings
  USB: OHCI: nxp: remove useless extern declaration
  USB: OHCI: at91: remove useless extern declaration
  usb: misc: rio500: fix result type for error message
  usb: mtu3: fix U3 port link issue
  usb: mtu3: enable auto switch from U3 to U2
  usbip: fix warning in vhci_hcd_probe/lockdep_init_map
  usb: core: usbport: Use proper LED API to fix potential crash
  usbip: add missing compile time generated files to .gitignore
  usb: hcd.h: construct hub class request constants from simpler constants
  USB: OHCI: ohci-pxa27x: remove useless functions
  USB: OHCI: omap: remove useless extern declaration
  USB: OHCI: ohci-omap: remove useless functions
  USB: OHCI: ohci-s3c2410: remove useless functions
  USB: cdc-acm: add device id for GW Instek AFG-125
  fsl/usb: Workarourd for USB erratum-A005697
  usb: hub: Wait for connection to be reestablished after port reset
  usbip: vudc: Refactor init_vudc_hw() to be more obvious
  ...
 2016-12-13 11:10:36 -08:00
Linus Torvalds
36869cb93d Merge branch 'for-4.10/block' of git://git.kernel.dk/linux-block 
Pull block layer updates from Jens Axboe:
 "This is the main block pull request this series. Contrary to previous
  release, I've kept the core and driver changes in the same branch. We
  always ended up having dependencies between the two for obvious
  reasons, so makes more sense to keep them together. That said, I'll
  probably try and keep more topical branches going forward, especially
  for cycles that end up being as busy as this one.

  The major parts of this pull request is:

   - Improved support for O_DIRECT on block devices, with a small
     private implementation instead of using the pig that is
     fs/direct-io.c. From Christoph.

   - Request completion tracking in a scalable fashion. This is utilized
     by two components in this pull, the new hybrid polling and the
     writeback queue throttling code.

   - Improved support for polling with O_DIRECT, adding a hybrid mode
     that combines pure polling with an initial sleep. From me.

   - Support for automatic throttling of writeback queues on the block
     side. This uses feedback from the device completion latencies to
     scale the queue on the block side up or down. From me.

   - Support from SMR drives in the block layer and for SD. From Hannes
     and Shaun.

   - Multi-connection support for nbd. From Josef.

   - Cleanup of request and bio flags, so we have a clear split between
     which are bio (or rq) private, and which ones are shared. From
     Christoph.

   - A set of patches from Bart, that improve how we handle queue
     stopping and starting in blk-mq.

   - Support for WRITE_ZEROES from Chaitanya.

   - Lightnvm updates from Javier/Matias.

   - Supoort for FC for the nvme-over-fabrics code. From James Smart.

   - A bunch of fixes from a whole slew of people, too many to name
     here"

* 'for-4.10/block' of git://git.kernel.dk/linux-block: (182 commits)
  blk-stat: fix a few cases of missing batch flushing
  blk-flush: run the queue when inserting blk-mq flush
  elevator: make the rqhash helpers exported
  blk-mq: abstract out blk_mq_dispatch_rq_list() helper
  blk-mq: add blk_mq_start_stopped_hw_queue()
  block: improve handling of the magic discard payload
  blk-wbt: don't throttle discard or write zeroes
  nbd: use dev_err_ratelimited in io path
  nbd: reset the setup task for NBD_CLEAR_SOCK
  nvme-fabrics: Add FC LLDD loopback driver to test FC-NVME
  nvme-fabrics: Add target support for FC transport
  nvme-fabrics: Add host support for FC transport
  nvme-fabrics: Add FC transport LLDD api definitions
  nvme-fabrics: Add FC transport FC-NVME definitions
  nvme-fabrics: Add FC transport error codes to nvme.h
  Add type 0x28 NVME type code to scsi fc headers
  nvme-fabrics: patch target code in prep for FC transport support
  nvme-fabrics: set sqe.command_id in core not transports
  parser: add u64 number parser
  nvme-rdma: align to generic ib_event logging helper
  ...
 2016-12-13 10:19:16 -08:00
Linus Torvalds
edc5f445a6 VFIO updates for v4.10-rc1 
- VFIO updates for v4.10 primarily include a new Mediated Device
    interface, which essentially allows software defined devices to be
    exposed to users through VFIO.  The host vendor driver providing
    this virtual device polices, or mediates user access to the device.
    These devices often incorporate portions of real devices, for
    instance the primary initial users of this interface expose vGPUs
    which allow the user to map mediated devices, or mdevs, to a
    portion of a physical GPU.  QEMU composes these mdevs into PCI
    representations using the existing VFIO user API.  This enables
    both Intel KVM-GT support, which is also expected to arrive into
    Linux mainline during the v4.10 merge window, as well as NVIDIA
    vGPU, and also Channel I/O devices (aka CCW devices) for s390
    virtualization support. (Kirti Wankhede, Neo Jia)
 
  - Drop unnecessary uses of pcibios_err_to_errno() (Cao Jin)
 
  - Fixes to VFIO capability chain handling (Eric Auger)
 
  - Error handling fixes for fallout from mdev (Christophe JAILLET)
 
  - Notifiers to expose struct kvm to mdev vendor drivers (Jike Song)
 
  - type1 IOMMU model search fixes (Kirti Wankhede, Neo Jia)
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Merge tag 'vfio-v4.10-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - VFIO updates for v4.10 primarily include a new Mediated Device
   interface, which essentially allows software defined devices to be
   exposed to users through VFIO. The host vendor driver providing this
   virtual device polices, or mediates user access to the device.

   These devices often incorporate portions of real devices, for
   instance the primary initial users of this interface expose vGPUs
   which allow the user to map mediated devices, or mdevs, to a portion
   of a physical GPU. QEMU composes these mdevs into PCI representations
   using the existing VFIO user API. This enables both Intel KVM-GT
   support, which is also expected to arrive into Linux mainline during
   the v4.10 merge window, as well as NVIDIA vGPU, and also Channel I/O
   devices (aka CCW devices) for s390 virtualization support. (Kirti
   Wankhede, Neo Jia)

 - Drop unnecessary uses of pcibios_err_to_errno() (Cao Jin)

 - Fixes to VFIO capability chain handling (Eric Auger)

 - Error handling fixes for fallout from mdev (Christophe JAILLET)

 - Notifiers to expose struct kvm to mdev vendor drivers (Jike Song)

 - type1 IOMMU model search fixes (Kirti Wankhede, Neo Jia)

* tag 'vfio-v4.10-rc1' of git://github.com/awilliam/linux-vfio: (30 commits)
  vfio iommu type1: Fix size argument to vfio_find_dma() in pin_pages/unpin_pages
  vfio iommu type1: Fix size argument to vfio_find_dma() during DMA UNMAP.
  vfio iommu type1: WARN_ON if notifier block is not unregistered
  kvm: set/clear kvm to/from vfio_group when group add/delete
  vfio: support notifier chain in vfio_group
  vfio: vfio_register_notifier: classify iommu notifier
  vfio: Fix handling of error returned by 'vfio_group_get_from_dev()'
  vfio: fix vfio_info_cap_add/shift
  vfio/pci: Drop unnecessary pcibios_err_to_errno()
  MAINTAINERS: Add entry VFIO based Mediated device drivers
  docs: Sample driver to demonstrate how to use Mediated device framework.
  docs: Sysfs ABI for mediated device framework
  docs: Add Documentation for Mediated devices
  vfio: Define device_api strings
  vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare()
  vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare()
  vfio: Introduce vfio_set_irqs_validate_and_prepare()
  vfio_pci: Update vfio_pci to use vfio_info_add_capability()
  vfio: Introduce common function to add capabilities
  vfio iommu: Add blocking notifier to notify DMA_UNMAP
  ...
 2016-12-13 09:23:56 -08:00
Linus Torvalds
5233c331cf It's been an busy period for mmc. Quite some changes in the mmc core, two new 
mmc host drivers, some existing drivers being extended to support new IP
 versions and lots of other updates.
 
 MMC core:
  - Delete eMMC packed command support
  - Introduce mmc_abort_tuning() to enable eMMC tuning to fail gracefully
  - Introduce mmc_can_retune() to see if a host can be retuned
  - Re-work and improve the sequence when sending a CMD6 for mmc
  - Enable CDM13 polling when switching to HS and HS DDR mode for mmc
  - Relax checking for CMD6 errors after switch to HS200
  - Re-factoring the code dealing with the mmc block queue
  - Recognize whether the eMMC card supports CMDQ
  - Fix 4K native sector check
  - Don't power off the card when starting the host
  - Increase MMC_IOC_MAX_BYTES to support bigger firmware binaries
  - Improve error handling and drop meaningless BUG_ONs()
  - Lots of clean-ups and changes to improve the quality of the code
 
 MMC host:
  - sdhci: Fix tuning sequence and clean-up the related code
  - sdhci: Add support to via DT override broken SDHCI cap register bits
  - sdhci-cadence: Add new driver for Cadence SD4HC SDHCI variant
  - sdhci-msm: Update clock management
  - sdhci-msm: Add support for eMMC HS400 mode
  - sdhci-msm: Deploy runtime/system PM support
  - sdhci-iproc: Extend driver support to newer IP versions
  - sdhci-pci: Add support for Intel GLK
  - sdhci-pci: Add support for Intel NI byt sdio
  - sdhci-acpi: Add support for 80860F14 UID 2 SDIO bus
  - sdhci: Lots of various small improvements and clean-ups
  - tmio: Add support for tuning
  - sh_mobile_sdhi: Add support for tuning
  - sh_mobile_sdhi: Extend driver to support SDHI IP on R7S72100 SoC
  - sh_mobile_sdhi: remove support for sh7372
  - davinci: Use mmc_of_parse() to enable generic mmc DT bindings
  - meson: Add new driver to support GX platforms
  - dw_mmc: Deploy generic runtime/system PM support
  - dw_mmc: Lots of various small improvements
 
 As a part of the mmc changes this time, I have also pulled in an immutable
 branch/tag (soc-device-match-tag1) hosted by Geert Uytterhoeven, to share the
 implementation of the new soc_device_match() interface. This is needed by the
 below mmc related changes:
  - mmc: sdhci-of-esdhc: Get correct IP version for T4240-R1.0-R2.0
  - soc: fsl: add GUTS driver for QorIQ platforms
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Merge tag 'mmc-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "It's been an busy period for mmc. Quite some changes in the mmc core,
  two new mmc host drivers, some existing drivers being extended to
  support new IP versions and lots of other updates.

  MMC core:
   - Delete eMMC packed command support
   - Introduce mmc_abort_tuning() to enable eMMC tuning to fail
     gracefully
   - Introduce mmc_can_retune() to see if a host can be retuned
   - Re-work and improve the sequence when sending a CMD6 for mmc
   - Enable CDM13 polling when switching to HS and HS DDR mode for mmc
   - Relax checking for CMD6 errors after switch to HS200
   - Re-factoring the code dealing with the mmc block queue
   - Recognize whether the eMMC card supports CMDQ
   - Fix 4K native sector check
   - Don't power off the card when starting the host
   - Increase MMC_IOC_MAX_BYTES to support bigger firmware binaries
   - Improve error handling and drop meaningless BUG_ONs()
   - Lots of clean-ups and changes to improve the quality of the code

  MMC host:
   - sdhci: Fix tuning sequence and clean-up the related code
   - sdhci: Add support to via DT override broken SDHCI cap register
     bits
   - sdhci-cadence: Add new driver for Cadence SD4HC SDHCI variant
   - sdhci-msm: Update clock management
   - sdhci-msm: Add support for eMMC HS400 mode
   - sdhci-msm: Deploy runtime/system PM support
   - sdhci-iproc: Extend driver support to newer IP versions
   - sdhci-pci: Add support for Intel GLK
   - sdhci-pci: Add support for Intel NI byt sdio
   - sdhci-acpi: Add support for 80860F14 UID 2 SDIO bus
   - sdhci: Lots of various small improvements and clean-ups
   - tmio: Add support for tuning
   - sh_mobile_sdhi: Add support for tuning
   - sh_mobile_sdhi: Extend driver to support SDHI IP on R7S72100 SoC
   - sh_mobile_sdhi: remove support for sh7372
   - davinci: Use mmc_of_parse() to enable generic mmc DT bindings
   - meson: Add new driver to support GX platforms
   - dw_mmc: Deploy generic runtime/system PM support
   - dw_mmc: Lots of various small improvements

  As a part of the mmc changes this time, I have also pulled in an
  immutable branch/tag (soc-device-match-tag1) hosted by Geert
  Uytterhoeven, to share the implementation of the new
  soc_device_match() interface. This is needed by these mmc related
  changes:

   - mmc: sdhci-of-esdhc: Get correct IP version for T4240-R1.0-R2.0
   - soc: fsl: add GUTS driver for QorIQ platforms"

* tag 'mmc-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (136 commits)
  mmc: sdhci-cadence: add Cadence SD4HC support
  mmc: sdhci: export sdhci_execute_tuning()
  mmc: sdhci: Tidy tuning loop
  mmc: sdhci: Simplify tuning block size logic
  mmc: sdhci: Factor out tuning helper functions
  mmc: sdhci: Use mmc_abort_tuning()
  mmc: mmc: Introduce mmc_abort_tuning()
  mmc: sdhci: Always allow tuning to fall back to fixed sampling
  mmc: sdhci: Fix tuning reset after exhausting the maximum number of loops
  mmc: sdhci: Fix recovery from tuning timeout
  Revert "mmc: sdhci: Reset cmd and data circuits after tuning failure"
  mmc: mmc: Relax checking for switch errors after HS200 switch
  mmc: sdhci-acpi: support 80860F14 UID 2 SDIO bus
  mmc: sdhci-of-at91: remove bogus MMC_SDHCI_IO_ACCESSORS select
  mmc: sdhci-pci: Use ACPI to get max frequency for Intel NI byt sdio
  mmc: sdhci-pci: Add PCI ID for Intel NI byt sdio
  mmc: sdhci-s3c: add spin_unlock_irq() before calling clk_round_rate
  mmc: dw_mmc: display the clock message only one time when card is polling
  mmc: dw_mmc: add the debug message for polling and non-removable
  mmc: dw_mmc: check the "present" variable before checking flags
  ...
 2016-12-13 08:34:11 -08:00
Linus Torvalds
1f0a53f623 LED updates for 4.10 merge cycle. 
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Merge tag 'leds_for_4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:

 - userspace LED class driver - it can be useful for testing triggers
   and can also be used to implement virtual LEDs

 - LED class driver for NIC78bx device

 - LED core fixes for preventing potential races while setting
   brightness when software blinking is enabled

 - improvements in LED documentation to mention semantics on changing
   brightness while trigger is active

* tag 'leds_for_4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: pca955x: Add ACPI support
  leds: netxbig: fix module autoload for OF registration
  leds: pca963x: Add ACPI support
  leds: leds-cobalt-raq: use builtin_platform_driver
  led: core: Fix blink_brightness setting race
  led: core: Use atomic bit-field for the blink-flags
  leds: Add user LED driver for NIC78bx device
  leds: verify vendor and change license in mlxcpld driver
  leds: pca963x: enable low-power state
  leds: pca9532: Use default trigger value from platform data
  leds: pca963x: workaround group blink scaling issue
  cleanup LED documentation and make it match reality
  leds: lp3952: Export I2C module alias information for module autoload
  leds: mc13783: Fix MC13892 keypad led access
  ledtrig-cpu.c: fix english
  leds/leds-lp5523.txt: make documentation match reality
  tools/leds: Add uledmon program for monitoring userspace LEDs
  leds: Use macro for max device node name size
  leds: Introduce userspace LED class driver
  mfd: qcom-pm8xxx: Clean up PM8XXX namespace
 2016-12-13 08:01:19 -08:00
Linus Torvalds
e7aa8c2eb1 These are the documentation changes for 4.10. 
It's another busy cycle for the docs tree, as the sphinx conversion
 continues.  Highlights include:
 
  - Further work on PDF output, which remains a bit of a pain but should be
    more solid now.
 
  - Five more DocBook template files converted to Sphinx.  Only 27 to go...
    Lots of plain-text files have also been converted and integrated.
 
  - Images in binary formats have been replaced with more source-friendly
    versions.
 
  - Various bits of organizational work, including the renaming of various
    files discussed at the kernel summit.
 
  - New documentation for the device_link mechanism.
 
 ...and, of course, lots of typo fixes and small updates.
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Merge tag 'docs-4.10' of git://git.lwn.net/linux

Pull documentation update from Jonathan Corbet:
 "These are the documentation changes for 4.10.

  It's another busy cycle for the docs tree, as the sphinx conversion
  continues. Highlights include:

   - Further work on PDF output, which remains a bit of a pain but
     should be more solid now.

   - Five more DocBook template files converted to Sphinx. Only 27 to
     go... Lots of plain-text files have also been converted and
     integrated.

   - Images in binary formats have been replaced with more
     source-friendly versions.

   - Various bits of organizational work, including the renaming of
     various files discussed at the kernel summit.

   - New documentation for the device_link mechanism.

  ... and, of course, lots of typo fixes and small updates"

* tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits)
  dma-buf: Extract dma-buf.rst
  Update Documentation/00-INDEX
  docs: 00-INDEX: document directories/files with no docs
  docs: 00-INDEX: remove non-existing entries
  docs: 00-INDEX: add missing entries for documentation files/dirs
  docs: 00-INDEX: consolidate process/ and admin-guide/ description
  scripts: add a script to check if Documentation/00-INDEX is sane
  Docs: change sh -> awk in REPORTING-BUGS
  Documentation/core-api/device_link: Add initial documentation
  core-api: remove an unexpected unident
  ppc/idle: Add documentation for powersave=off
  Doc: Correct typo, "Introdution" => "Introduction"
  Documentation/atomic_ops.txt: convert to ReST markup
  Documentation/local_ops.txt: convert to ReST markup
  Documentation/assoc_array.txt: convert to ReST markup
  docs-rst: parse-headers.pl: cleanup the documentation
  docs-rst: fix media cleandocs target
  docs-rst: media/Makefile: reorganize the rules
  docs-rst: media: build SVG from graphviz files
  docs-rst: replace bayer.png by a SVG image
  ...
 2016-12-12 21:58:13 -08:00
Wang Sheng-Hui
cc10385b6f PCI: Move config space size macros to pci_regs.h 
Move PCI configuration space size macros (PCI_CFG_SPACE_SIZE and
PCI_CFG_SPACE_EXP_SIZE) from drivers/pci/pci.h to
include/uapi/linux/pci_regs.h so they can be used by more drivers and
eliminate duplicate definitions.

[bhelgaas: Expand comment to include PCI-X details]
Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
 2016-12-12 10:05:22 -06:00
Theodore Ts'o
41d5319af3 fscrypt: move the policy flags and encryption mode definitions to uapi header 
These constants are part of the UAPI, so they belong in
include/uapi/linux/fs.h instead of include/linux/fscrypto.h

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eric Biggers <ebiggers@google.com>
 2016-12-11 16:26:10 -05:00
Asbjørn Sloth Tønnesen
47c3e7783b net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_* 
PPPOL2TP_MSG_* and L2TP_MSG_* are duplicates, and are being used
interchangeably in the kernel, so let's standardize on L2TP_MSG_*
internally, and keep PPPOL2TP_MSG_* defined in UAPI for compatibility.

Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-10 23:29:11 -05:00
Asbjørn Sloth Tønnesen
41c43fbee6 net: l2tp: export debug flags to UAPI 
Move the L2TP_MSG_* definitions to UAPI, as it is part of
the netlink API.

Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-10 23:29:11 -05:00
David S. Miller
821781a9f4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-10 16:21:55 -05:00
David S. Miller
5ac9efbe1c Three fixes: 
* fix a logic bug introduced by a previous cleanup
  * fix nl80211 attribute confusing (trying to use
    a single attribute for two purposes)
  * fix a long-standing BSS leak that happens when an
    association attempt is abandoned
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Merge tag 'mac80211-next-for-davem-2016-12-09' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Three fixes:
 * fix a logic bug introduced by a previous cleanup
 * fix nl80211 attribute confusing (trying to use
   a single attribute for two purposes)
 * fix a long-standing BSS leak that happens when an
   association attempt is abandoned
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-09 22:59:05 -05:00
Vamsi Krishna
2fa436b3a2 nl80211: Use different attrs for BSSID and random MAC addr in scan req 
NL80211_ATTR_MAC was used to set both the specific BSSID to be scanned
and the random MAC address to be used when privacy is enabled. When both
the features are enabled, both the BSSID and the local MAC address were
getting same value causing Probe Request frames to go with unintended
DA. Hence, this has been fixed by using a different NL80211_ATTR_BSSID
attribute to set the specific BSSID (which was the more recent addition
in cfg80211) for a scan.

Backwards compatibility with old userspace software is maintained to
some extent by allowing NL80211_ATTR_MAC to be used to set the specific
BSSID when scanning without enabling random MAC address use.

Scanning with random source MAC address was introduced by commit
ad2b26abc1 ("cfg80211: allow drivers to support random MAC addresses
for scan") and the issue was introduced with the addition of the second
user for the same attribute in commit 818965d391 ("cfg80211: Allow a
scan request for a specific BSSID").

Fixes: 818965d391 ("cfg80211: Allow a scan request for a specific BSSID")
Signed-off-by: Vamsi Krishna <vamsin@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 2016-12-09 12:47:19 +01:00
Martin KaFai Lau
17bedab272 bpf: xdp: Allow head adjustment in XDP prog 
This patch allows XDP prog to extend/remove the packet
data at the head (like adding or removing header).  It is
done by adding a new XDP helper bpf_xdp_adjust_head().

It also renames bpf_helper_changes_skb_data() to
bpf_helper_changes_pkt_data() to better reflect
that XDP prog does not work on skb.

This patch adds one "xdp_adjust_head" bit to bpf_prog for the
XDP-capable driver to check if the XDP prog requires
bpf_xdp_adjust_head() support.  The driver can then decide
to error out during XDP_SETUP_PROG.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-08 14:25:13 -05:00
Simon Horman
7b684884fb net/sched: cls_flower: Support matching on ICMP type and code 
Support matching on ICMP type and code.

Example usage:

tc qdisc add dev eth0 ingress

tc filter add dev eth0 protocol ip parent ffff: flower \
	indev eth0 ip_proto icmp type 8 code 0 action drop

tc filter add dev eth0 protocol ipv6 parent ffff: flower \
	indev eth0 ip_proto icmpv6 type 128 code 0 action drop

Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-08 11:47:08 -05:00
Or Gerlitz
faa3ffce78 net/sched: cls_flower: Add support for matching on flags 
Add UAPI to provide set of flags for matching, where the flags
provided from user-space are mapped to flow-dissector flags.

The 1st flag allows to match on whether the packet is an
IP fragment and corresponds to the FLOW_DIS_IS_FRAGMENT flag.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-08 11:32:50 -05:00
David S. Miller
5fccd64aa4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 
Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains a large Netfilter update for net-next,
to summarise:

1) Add support for stateful objects. This series provides a nf_tables
   native alternative to the extended accounting infrastructure for
   nf_tables. Two initial stateful objects are supported: counters and
   quotas. Objects are identified by a user-defined name, you can fetch
   and reset them anytime. You can also use a maps to allow fast lookups
   using any arbitrary key combination. More info at:

   http://marc.info/?l=netfilter-devel&m=148029128323837&w=2

2) On-demand registration of nf_conntrack and defrag hooks per netns.
   Register nf_conntrack hooks if we have a stateful ruleset, ie.
   state-based filtering or NAT. The new nf_conntrack_default_on sysctl
   enables this from newly created netnamespaces. Default behaviour is not
   modified. Patches from Florian Westphal.

3) Allocate 4k chunks and then use these for x_tables counter allocation
   requests, this improves ruleset load time and also datapath ruleset
   evaluation, patches from Florian Westphal.

4) Add support for ebpf to the existing x_tables bpf extension.
   From Willem de Bruijn.

5) Update layer 4 checksum if any of the pseudoheader fields is updated.
   This provides a limited form of 1:1 stateless NAT that make sense in
   specific scenario, eg. load balancing.

6) Add support to flush sets in nf_tables. This series comes with a new
   set->ops->deactivate_one() indirection given that we have to walk
   over the list of set elements, then deactivate them one by one.
   The existing set->ops->deactivate() performs an element lookup that
   we don't need.

7) Two patches to avoid cloning packets, thus speed up packet forwarding
   via nft_fwd from ingress. From Florian Westphal.

8) Two IPVS patches via Simon Horman: Decrement ttl in all modes to
   prevent infinite loops, patch from Dwip Banerjee. And one minor
   refactoring from Gao feng.

9) Revisit recent log support for nf_tables netdev families: One patch
   to ensure that we correctly handle non-ethernet packets. Another
   patch to add missing logger definition for netdev. Patches from
   Liping Zhang.

10) Three patches for nft_fib, one to address insufficient register
    initialization and another to solve incorrect (although harmless)
    byteswap operation. Moreover update xt_rpfilter and nft_fib to match
    lbcast packets with zeronet as source, eg. DHCP Discover packets
    (0.0.0.0 -> 255.255.255.255). Also from Liping Zhang.

11) Built-in DCCP, SCTP and UDPlite conntrack and NAT support, from
    Davide Caratti. While DCCP is rather hopeless lately, and UDPlite has
    been broken in many-cast mode for some little time, let's give them a
    chance by placing them at the same level as other existing protocols.
    Thus, users don't explicitly have to modprobe support for this and
    NAT rules work for them. Some people point to the lack of support in
    SOHO Linux-based routers that make deployment of new protocols harder.
    I guess other middleboxes outthere on the Internet are also to blame.
    Anyway, let's see if this has any impact in the midrun.

12) Skip software SCTP software checksum calculation if the NIC comes
    with SCTP checksum offload support. From Davide Caratti.

13) Initial core factoring to prepare conversion to hook array. Three
    patches from Aaron Conole.

14) Gao Feng made a wrong conversion to switch in the xt_multiport
    extension in a patch coming in the previous batch. Fix it in this
    batch.

15) Get vmalloc call in sync with kmalloc flags to avoid a warning
    and likely OOM killer intervention from x_tables. From Marcelo
    Ricardo Leitner.

16) Update Arturo Borrero's email address in all source code headers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-12-07 19:16:46 -05:00
Willem de Bruijn
2c16d60332 netfilter: xt_bpf: support ebpf 
Add support for attaching an eBPF object by file descriptor.

The iptables binary can be called with a path to an elf object or a
pinned bpf object. Also pass the mode and path to the kernel to be
able to return it later for iptables dump and save.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 13:32:35 +01:00
Pablo Neira Ayuso
63aea29060 netfilter: nft_objref: support for stateful object maps 
This patch allows us to refer to stateful object dictionaries, the
source register indicates the key data to be used to look up for the
corresponding state object. We can refer to these maps through names or,
alternatively, the map transaction id. This allows us to refer to both
anonymous and named maps.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 13:22:48 +01:00
Pablo Neira Ayuso
8aeff920dc netfilter: nf_tables: add stateful object reference to set elements 
This patch allows you to refer to stateful objects from set elements.
This provides the infrastructure to create maps where the right hand
side of the mapping is a stateful object.

This allows us to build dictionaries of stateful objects, that you can
use to perform fast lookups using any arbitrary key combination.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 13:22:47 +01:00
Pablo Neira Ayuso
1896531710 netfilter: nft_quota: add depleted flag for objects 
Notify on depleted quota objects. The NFT_QUOTA_F_DEPLETED flag
indicates we have reached overquota.

Add pointer to table from nft_object, so we can use it when sending the
depletion notification to userspace.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 13:22:12 +01:00
Pablo Neira Ayuso
43da04a593 netfilter: nf_tables: atomic dump and reset for stateful objects 
This patch adds a new NFT_MSG_GETOBJ_RESET command perform an atomic
dump-and-reset of the stateful object. This also comes with add support
for atomic dump and reset for counter and quota objects.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 12:56:57 +01:00
Pablo Neira Ayuso
795595f68d netfilter: nft_quota: dump consumed quota 
Add a new attribute NFTA_QUOTA_CONSUMED that displays the amount of
quota that has been already consumed. This allows us to restore the
internal state of the quota object between reboots as well as to monitor
how wasted it is.

This patch changes the logic to account for the consumed bytes, instead
of the bytes that remain to be consumed.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-12-07 12:54:22 +01:00