Commit graph

1769 commits

Author SHA1 Message Date
Linus Torvalds
ab074ade9c Merge git://git.infradead.org/users/eparis/audit
Pull audit updates from Eric Paris:
 "So this change across a whole bunch of arches really solves one basic
  problem.  We want to audit when seccomp is killing a process.  seccomp
  hooks in before the audit syscall entry code.  audit_syscall_entry
  took as an argument the arch of the given syscall.  Since the arch is
  part of what makes a syscall number meaningful it's an important part
  of the record, but it isn't available when seccomp shoots the
  syscall...

  For most arch's we have a better way to get the arch (syscall_get_arch)
  So the solution was two fold: Implement syscall_get_arch() everywhere
  there is audit which didn't have it.  Use syscall_get_arch() in the
  seccomp audit code.  Having syscall_get_arch() everywhere meant it was
  a useless flag on the stack and we could get rid of it for the typical
  syscall entry.

  The other changes inside the audit system aren't grand, fixed some
  records that had invalid spaces.  Better locking around the task comm
  field.  Removing some dead functions and structs.  Make some things
  static.  Really minor stuff"

* git://git.infradead.org/users/eparis/audit: (31 commits)
  audit: rename audit_log_remove_rule to disambiguate for trees
  audit: cull redundancy in audit_rule_change
  audit: WARN if audit_rule_change called illegally
  audit: put rule existence check in canonical order
  next: openrisc: Fix build
  audit: get comm using lock to avoid race in string printing
  audit: remove open_arg() function that is never used
  audit: correct AUDIT_GET_FEATURE return message type
  audit: set nlmsg_len for multicast messages.
  audit: use union for audit_field values since they are mutually exclusive
  audit: invalid op= values for rules
  audit: use atomic_t to simplify audit_serial()
  kernel/audit.c: use ARRAY_SIZE instead of sizeof/sizeof[0]
  audit: reduce scope of audit_log_fcaps
  audit: reduce scope of audit_net_id
  audit: arm64: Remove the audit arch argument to audit_syscall_entry
  arm64: audit: Add audit hook in syscall_trace_enter/exit()
  audit: x86: drop arch from __audit_syscall_entry() interface
  sparc: implement is_32bit_task
  sparc: properly conditionalize use of TIF_32BIT
  ...
2014-10-19 16:25:56 -07:00
Linus Torvalds
929254d8da . fix DM's long-standing excessive use of memory by leveraging the new
bioset_create_nobvec() interface when creating the DM's bioset
 
 . fix a few bugs in dm-bufio and dm-log-userspace
 
 . add DM core support for a DM multipath use-case that requires loading
   DM tables that contain devices that have failed (by allowing active
   and inactive DM tables to share dm_devs)
 
 . add discard support to the DM raid target; like MD raid456 the user
   must opt-in to raid456 discard support be specifying the
   devices_handle_discard_safely=Y module param.
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Merge tag 'dm-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device-mapper updates from Mike Snitzer:
 "I rebased the DM tree ontop of linux-block.git's 'for-3.18/core' at
  the beginning of October because DM core now depends on the newly
  introduced bioset_create_nobvec() interface.

  Summary:

   - fix DM's long-standing excessive use of memory by leveraging the
     new bioset_create_nobvec() interface when creating the DM's bioset

   - fix a few bugs in dm-bufio and dm-log-userspace

   - add DM core support for a DM multipath use-case that requires
     loading DM tables that contain devices that have failed (by
     allowing active and inactive DM tables to share dm_devs)

   - add discard support to the DM raid target; like MD raid456 the user
     must opt-in to raid456 discard support be specifying the
     devices_handle_discard_safely=Y module param"

* tag 'dm-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm log userspace: fix memory leak in dm_ulog_tfr_init failure path
  dm bufio: when done scanning return from __scan immediately
  dm bufio: update last_accessed when relinking a buffer
  dm raid: add discard support for RAID levels 4, 5 and 6
  dm raid: add discard support for RAID levels 1 and 10
  dm: allow active and inactive tables to share dm_devs
  dm mpath: stop queueing IO when no valid paths exist
  dm: use bioset_create_nobvec()
  dm: remove nr_iovecs parameter from alloc_tio()
2014-10-18 12:25:30 -07:00
Linus Torvalds
88ed806abb md updates for 3.18
- a few minor bug fixes
 - quite a lot of code tidy-up and simplification
 - remove PRINT_RAID_DEBUG ioctl.  I'm fairly sure
   it is unused, and it isn't particularly useful.
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Merge tag 'md/3.18' of git://neil.brown.name/md

Pull md updates from Neil Brown:
 - a few minor bug fixes
 - quite a lot of code tidy-up and simplification
 - remove PRINT_RAID_DEBUG ioctl.  I'm fairly sure it is unused, and it
   isn't particularly useful.

* tag 'md/3.18' of git://neil.brown.name/md: (21 commits)
  lib/raid6: Add log level to printks
  md: move EXPORT_SYMBOL to after function in md.c
  md: discard PRINT_RAID_DEBUG ioctl
  md: remove MD_BUG()
  md: clean up 'exit' labels in md_ioctl().
  md: remove unnecessary test for MD_MAJOR in md_ioctl()
  md: don't allow "-sync" to be set for device in an active array.
  md: remove unwanted white space from md.c
  md: don't start resync thread directly from md thread.
  md: Just use RCU when checking for overlap between arrays.
  md: avoid potential long delay under pers_lock
  md: simplify export_array()
  md: discard find_rdev_nr in favour of find_rdev_nr_rcu
  md: use wait_event() to simplify md_super_wait()
  md: be more relaxed about stopping an array which isn't started.
  md/raid1: process_checks doesn't use its return value.
  md/raid5: fix init_stripe() inconsistencies
  md/raid10: another memory leak due to reshape.
  md: use set_bit/clear_bit instead of shift/mask for bi_flags changes.
  md/raid1: minor typos and reformatting.
  ...
2014-10-18 11:39:52 -07:00
Linus Torvalds
2e923b0251 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Include fixes for netrom and dsa (Fabian Frederick and Florian
    Fainelli)

 2) Fix FIXED_PHY support in stmmac, from Giuseppe CAVALLARO.

 3) Several SKB use after free fixes (vxlan, openvswitch, vxlan,
    ip_tunnel, fou), from Li ROngQing.

 4) fec driver PTP support fixes from Luwei Zhou and Nimrod Andy.

 5) Use after free in virtio_net, from Michael S Tsirkin.

 6) Fix flow mask handling for megaflows in openvswitch, from Pravin B
    Shelar.

 7) ISDN gigaset and capi bug fixes from Tilman Schmidt.

 8) Fix route leak in ip_send_unicast_reply(), from Vasily Averin.

 9) Fix two eBPF JIT bugs on x86, from Alexei Starovoitov.

10) TCP_SKB_CB() reorganization caused a few regressions, fixed by Cong
    Wang and Eric Dumazet.

11) Don't overwrite end of SKB when parsing malformed sctp ASCONF
    chunks, from Daniel Borkmann.

12) Don't call sock_kfree_s() with NULL pointers, this function also has
    the side effect of adjusting the socket memory usage.  From Cong Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (90 commits)
  bna: fix skb->truesize underestimation
  net: dsa: add includes for ethtool and phy_fixed definitions
  openvswitch: Set flow-key members.
  netrom: use linux/uaccess.h
  dsa: Fix conversion from host device to mii bus
  tipc: fix bug in bundled buffer reception
  ipv6: introduce tcp_v6_iif()
  sfc: add support for skb->xmit_more
  r8152: return -EBUSY for runtime suspend
  ipv4: fix a potential use after free in fou.c
  ipv4: fix a potential use after free in ip_tunnel_core.c
  hyperv: Add handling of IP header with option field in netvsc_set_hash()
  openvswitch: Create right mask with disabled megaflows
  vxlan: fix a free after use
  openvswitch: fix a use after free
  ipv4: dst_entry leak in ip_send_unicast_reply()
  ipv4: clean up cookie_v4_check()
  ipv4: share tcp_v4_save_options() with cookie_v4_check()
  ipv4: call __ip_options_echo() in cookie_v4_check()
  atm: simplify lanai.c by using module_pci_driver
  ...
2014-10-18 09:31:37 -07:00
Alexei Starovoitov
c15952dc18 net: filter: move common defines into bpf_common.h
userspace programs that use eBPF instruction macros need to include two files:
uapi/linux/filter.h and uapi/linux/bpf.h
Move common macro definitions that are shared between classic BPF and eBPF
into uapi/linux/bpf_common.h, so that user app can include only one bpf.h file

Cc: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:06:45 -04:00
Linus Torvalds
2d65a9f48f Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "This is the main git pull for the drm,

  I pretty much froze major pulls at -rc5/6 time, and haven't had much
  fallout, so will probably continue doing that.

  Lots of changes all over, big internal header cleanup to make it clear
  drm features are legacy things and what are things that modern KMS
  drivers should be using.  Also big move to use the new generic fences
  in all the TTM drivers.

  core:
        atomic prep work,
        vblank rework changes, allows immediate vblank disables
        major header reworking and cleanups to better delinate legacy
        interfaces from what KMS drivers should be using.
        cursor planes locking fixes

  ttm:
        move to generic fences (affects all TTM drivers)
        ppc64 caching fixes

  radeon:
        userptr support,
        uvd for old asics,
        reset rework for fence changes
        better buffer placement changes,
        dpm feature enablement
        hdmi audio support fixes

  intel:
        Cherryview work,
        180 degree rotation,
        skylake prep work,
        execlist command submission
        full ppgtt prep work
        cursor improvements
        edid caching,
        vdd handling improvements

  nouveau:
        fence reworking
        kepler memory clock work
        gt21x clock work
        fan control improvements
        hdmi infoframe fixes
        DP audio

  ast:
        ppc64 fixes
        caching fix

  rcar:
        rcar-du DT support

  ipuv3:
        prep work for capture support

  msm:
        LVDS support for mdp4, new panel, gpu refactoring

  exynos:
        exynos3250 SoC support, drop bad mmap interface,
        mipi dsi changes, and component match support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (640 commits)
  drm/mst: rework payload table allocation to conform better.
  drm/ast: Fix HW cursor image
  drm/radeon/kv: add uvd/vce info to dpm debugfs output
  drm/radeon/ci: add uvd/vce info to dpm debugfs output
  drm/radeon: export reservation_object from dmabuf to ttm
  drm/radeon: cope with foreign fences inside the reservation object
  drm/radeon: cope with foreign fences inside display
  drm/core: use helper to check driver features
  drm/radeon/cik: write gfx ucode version to ucode addr reg
  drm/radeon/si: print full CS when we hit a packet 0
  drm/radeon: remove unecessary includes
  drm/radeon/combios: declare legacy_connector_convert as static
  drm/radeon/atombios: declare connector convert tables as static
  drm/radeon: drop btc_get_max_clock_from_voltage_dependency_table
  drm/radeon/dpm: drop clk/voltage dependency filters for BTC
  drm/radeon/dpm: drop clk/voltage dependency filters for CI
  drm/radeon/dpm: drop clk/voltage dependency filters for SI
  drm/radeon/dpm: drop clk/voltage dependency filters for NI
  drm/radeon: disable audio when we disable hdmi (v2)
  drm/radeon: split audio enable between eg and r600 (v2)
  ...
2014-10-14 09:39:08 +02:00
NeilBrown
2cbbca5e7c md: discard PRINT_RAID_DEBUG ioctl
All the interesting information printed by this ioctl
is provided in /proc/mdstat and/or sysfs.
So it isn't needed and isn't used and would be best if it didn't
exist.

Signed-off-by: NeilBrown <neilb@suse.de>
2014-10-14 13:08:29 +11:00
Linus Torvalds
1ee07ef6b5 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
 "This patch set contains the main portion of the changes for 3.18 in
  regard to the s390 architecture.  It is a bit bigger than usual,
  mainly because of a new driver and the vector extension patches.

  The interesting bits are:
   - Quite a bit of work on the tracing front.  Uprobes is enabled and
     the ftrace code is reworked to get some of the lost performance
     back if CONFIG_FTRACE is enabled.
   - To improve boot time with CONFIG_DEBIG_PAGEALLOC, support for the
     IPTE range facility is added.
   - The rwlock code is re-factored to improve writer fairness and to be
     able to use the interlocked-access instructions.
   - The kernel part for the support of the vector extension is added.
   - The device driver to access the CD/DVD on the HMC is added, this
     will hopefully come in handy to improve the installation process.
   - Add support for control-unit initiated reconfiguration.
   - The crypto device driver is enhanced to enable the additional AP
     domains and to allow the new crypto hardware to be used.
   - Bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
  s390/ftrace: simplify enabling/disabling of ftrace_graph_caller
  s390/ftrace: remove 31 bit ftrace support
  s390/kdump: add support for vector extension
  s390/disassembler: add vector instructions
  s390: add support for vector extension
  s390/zcrypt: Toleration of new crypto hardware
  s390/idle: consolidate idle functions and definitions
  s390/nohz: use a per-cpu flag for arch_needs_cpu
  s390/vtime: do not reset idle data on CPU hotplug
  s390/dasd: add support for control unit initiated reconfiguration
  s390/dasd: fix infinite loop during format
  s390/mm: make use of ipte range facility
  s390/setup: correct 4-level kernel page table detection
  s390/topology: call set_sched_topology early
  s390/uprobes: architecture backend for uprobes
  s390/uprobes: common library for kprobes and uprobes
  s390/rwlock: use the interlocked-access facility 1 instructions
  s390/rwlock: improve writer fairness
  s390/rwlock: remove interrupt-enabling rwlock variant.
  s390/mm: remove change bit override support
  ...
2014-10-14 03:47:00 +02:00
Linus Torvalds
ca321885b0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "This set fixes a bunch of fallout from the changes that went in during
  this merge window, particularly:

   - Fix fsl_pq_mdio (Claudiu Manoil) and fm10k (Pranith Kumar) build
     failures.

   - Several networking drivers do atomic_set() on page counts where
     that's not exactly legal.  From Eric Dumazet.

   - Make __skb_flow_get_ports() work cleanly with unaligned data, from
     Alexander Duyck.

   - Fix some kernel-doc buglets in rfkill and netlabel, from Fabian
     Frederick.

   - Unbalanced enable_irq_wake usage in bcmgenet and systemport
     drivers, from Florian Fainelli.

   - pxa168_eth needs to depend on HAS_DMA, from Geert Uytterhoeven.

   - Multi-dequeue in the qdisc layer severely bypasses the fairness
     limits the previous code used to enforce, reintroduce in a way that
     at the same time doesn't compromise bulk dequeue opportunities.
     From Jesper Dangaard Brouer.

   - macvlan receive path unnecessarily hops through a softirq by using
     netif_rx() instead of netif_receive_skb().  From Jason Baron"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (51 commits)
  net: systemport: avoid unbalanced enable_irq_wake calls
  net: bcmgenet: avoid unbalanced enable_irq_wake calls
  net: bcmgenet: fix off-by-one in incrementing read pointer
  net: fix races in page->_count manipulation
  mlx4: fix race accessing page->_count
  ixgbe: fix race accessing page->_count
  igb: fix race accessing page->_count
  fm10k: fix race accessing page->_count
  net/phy: micrel: Add clock support for KSZ8021/KSZ8031
  flow-dissector: Fix alignment issue in __skb_flow_get_ports
  net: filter: fix the comments
  Documentation: replace __sk_run_filter with __bpf_prog_run
  macvlan: optimize the receive path
  macvlan: pass 'bool' type to macvlan_count_rx()
  drivers: net: xgene: Add 10GbE ethtool support
  drivers: net: xgene: Add 10GbE support
  drivers: net: xgene: Preparing for adding 10GbE support
  dtb: Add 10GbE node to APM X-Gene SoC device tree
  Documentation: dts: Update section header for APM X-Gene
  MAINTAINERS: Update APM X-Gene section
  ...
2014-10-11 21:19:00 -04:00
Linus Torvalds
fd9879b9bb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman:
 "Here's a first pull request for powerpc updates for 3.18.

  The bulk of the additions are for the "cxl" driver, for IBM's Coherent
  Accelerator Processor Interface (CAPI).  Most of it's in drivers/misc,
  which Greg & Arnd maintain, Greg said he was happy for us to take it
  through our tree.

  There's the usual minor cleanups and fixes, including a bit of noise
  in drivers from some of those.  A bunch of updates to our EEH code,
  which has been getting more testing.  Several nice speedups from
  Anton, including 20% in clear_page().

  And a bunch of updates for freescale from Scott"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
  cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
  cxl: Add documentation for userspace APIs
  cxl: Add driver to Kbuild and Makefiles
  cxl: Add userspace header file
  cxl: Driver code for powernv PCIe based cards for userspace access
  cxl: Add base builtin support
  powerpc/mm: Add hooks for cxl
  powerpc/opal: Add PHB to cxl mode call
  powerpc/mm: Add new hash_page_mm()
  powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  cxl: Add new header for call backs and structs
  powerpc/powernv: Split out set MSI IRQ chip code
  powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  powerpc/msi: Improve IRQ bitmap allocator
  powerpc/cell: Make spu_flush_all_slbs() generic
  powerpc/cell: Move data segment faulting code out of cell platform
  powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  powerpc/pseries: Use new defines when calling H_SET_MODE
  powerpc: Update contact info in Documentation files
  powerpc/perf/hv-24x7: Simplify catalog_read()
  ...
2014-10-11 20:34:00 -04:00
Linus Torvalds
27a9716bc8 VFIO updates for v3.18-rc1
- Nested IOMMU extension to type1 (Will Deacon)
  - Restore MSIx message before enabling (Gavin Shan)
  - Fix remove path locking (Alex Williamson)
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Merge tag 'vfio-v3.18-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:
 - Nested IOMMU extension to type1 (Will Deacon)
 - Restore MSIx message before enabling (Gavin Shan)
 - Fix remove path locking (Alex Williamson)

* tag 'vfio-v3.18-rc1' of git://github.com/awilliam/linux-vfio:
  vfio-pci: Fix remove path locking
  drivers/vfio: Export vfio_spapr_iommu_eeh_ioctl() with GPL
  vfio/pci: Restore MSIx message prior to enabling
  PCI: Export MSI message relevant functions
  vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type
  iommu: introduce domain attribute for nesting IOMMUs
2014-10-11 06:49:24 -04:00
Linus Torvalds
a2ce35273c sound updates for 3.18-rc1
This time it's a relatively calm update batch, but the amount isn't
 too small in the end.  Here we go over some highlights:
 
 - ALSA core
   - One major change is the support of nonatomic PCM operations.
     This allows the trigger and other callbacks to call schedule(),
     which would be useful for mailbox type communications.  Already
     some drivers (Digigram ones) have been converted to use together
     with threaded irqs as an example.
   - Improvement / fixes of DSD PCM format support
 
 - HD-audio
   - Large volume of rewrites are found in Realtek codec driver for
     converting Dell and HP quirks to generic forms.
   - Inverted dmic code cleanup from David.
   - Realtek COEF access has been optimized.
   - Now HD-audio jack infrastructure allows multiple callbacks, which
     fixes / simplifies the jack-dependent power controls on STAC/IDT
     and VIA codecs.
   - Many additional device-specific fixups as usual
   - A few deadcode cleanups, CA0132 code cleanup, etc.
 
 - ASoC
   - More componentization work from Lars-Peter, this time mainly
     cleaning up the suspend and bias level transition callbacks.
   - Real system support for the Intel drivers and a bunch of fixes
     and enhancements for the associated CODEC drivers, this is going
     to need a lot quirks over time due to the lack of any firmware
     description of the boards.
   - Jack detect support for simple card from Dylan Reid.
   - A bunch of small fixes and enhancements for the Freescale
     drivers.
   - New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32,
     Everest Semiconductor ES8328 and Freescale cards using the ASRC
     in newer i.MX processors.
   - A few simple-card fixes, mostly cleanups but also a fix for
   - interaction between GPIO 0 and simple-card.
 
 - Misc
   - Virtuoso / Oxygen updates by Clemens
   - USB-audio: Yamaha MOTIF XF MIDI port name fixes
   - Conversion of kernel messages to standard dev_*() in ctxfi
     driver.
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Merge tag 'sound-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "This time it's a relatively calm update batch, but the amount isn't
  too small in the end.  Here we go over some highlights:

  ALSA core:
   - One major change is the support of nonatomic PCM operations.  This
     allows the trigger and other callbacks to call schedule(), which
     would be useful for mailbox type communications.  Already some
     drivers (Digigram ones) have been converted to use together with
     threaded irqs as an example.
   - Improvement / fixes of DSD PCM format support

  HD-audio:
   - Large volume of rewrites are found in Realtek codec driver for
     converting Dell and HP quirks to generic forms.
   - Inverted dmic code cleanup from David.
   - Realtek COEF access has been optimized.
   - Now HD-audio jack infrastructure allows multiple callbacks, which
     fixes / simplifies the jack-dependent power controls on STAC/IDT
     and VIA codecs.
   - Many additional device-specific fixups as usual
   - A few deadcode cleanups, CA0132 code cleanup, etc.

  ASoC:
   - More componentization work from Lars-Peter, this time mainly
     cleaning up the suspend and bias level transition callbacks.
   - Real system support for the Intel drivers and a bunch of fixes and
     enhancements for the associated CODEC drivers, this is going to
     need a lot quirks over time due to the lack of any firmware
     description of the boards.
   - Jack detect support for simple card from Dylan Reid.
   - A bunch of small fixes and enhancements for the Freescale drivers.
   - New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32,
     Everest Semiconductor ES8328 and Freescale cards using the ASRC in
     newer i.MX processors.
   - A few simple-card fixes, mostly cleanups but also a fix for
     interaction between GPIO 0 and simple-card.

  Misc:
   - Virtuoso / Oxygen updates by Clemens
   - USB-audio: Yamaha MOTIF XF MIDI port name fixes
   - Conversion of kernel messages to standard dev_*() in ctxfi driver"

* tag 'sound-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (251 commits)
  ASoC: mc13783: Ensure we only try to dereference valid of_nodes
  ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_txctrl
  ALSA: hda - Add dock port support to Thinkpad L440 (71aa:501e)
  ALSA: Allow pass NULL dev for snd_pci_quirk_lookup()
  ASoC: imx-es8328: Fix of_node_put() call with uninitialized object
  ASoC: soc-pcm: fix sig_bits determination in soc_pcm_apply_msb()
  ASoC: simple-card: Initialize headphone and mic GPIO numbers
  ASoC: imx-es8328: Fix missing return code in imx_es8328_probe()
  ALSA: hda - Add dock support for Thinkpad T440 (17aa:2212)
  ALSA: usb: caiaq: check for cdev->n_streams > 1
  ASoC: 88pm860x-codec: Fix possibly missing string termination
  ASoC: core: fix use after free in snd_soc_remove_platform()
  ASoC: soc-dapm: fix use after free
  ALSA: hda - Make the inv dmic handling for Realtek use generic parser
  ALSA: hda - Add Inverted Internal mic for Samsung Ativ book 9 (NP900X3G)
  ALSA: hda - Add inverted internal mic for Asus Aspire 4830T
  ASoC: Intel: byt-rt5640: fix coccinelle warnings
  ASoC: fsl_esai doc: Add "fsl,vf610-esai" as compatible string
  ASoC: da732x: Remove unnecessary KERN_ERR in pr_err()
  ASoC: simple-card: Fix detect gpio documentation.
  ...
2014-10-10 22:13:25 -04:00
Linus Torvalds
4d9708ea5e media updates for v3.18-rc1
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Merge tag 'media/v3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new IR driver: hix5hd2-ir

 - the virtual test driver (vivi) was replaced by vivid, with has an
   almost complete set of features to emulate most v4l2 devices and
   properly test all sorts of userspace apps

 - the as102 driver had several bugs fixed and was properly split into a
   frontend and a core driver.  With that, it got promoted from staging
   into mainstream

 - one new CI driver got added for CIMaX SP2/SP2HF (sp2 driver)

 - one new frontend driver for Toshiba ISDB-T/ISDB-S demod (tc90522)

 - one new PCI driver for ISDB-T/ISDB-S (pt3 driver)

 - saa7134 driver got support for go7007-based devices

 - added a new PCI driver for Techwell 68xx chipsets (tw68)

 - a new platform driver was added (coda)

 - new tuner drivers: mxl301rf and qm1d1c0042

 - a new DVB USB driver was added for DVBSky S860 & similar devices

 - added a new SDR driver (hackrf)

 - usbtv got audio support

 - several platform drivers are now compiled with COMPILE_TEST

 - a series of compiler fixup patches, making sparse/spatch happier with
   the media stuff and removing several warnings, especially on those
   platform drivers that didn't use to compile on x86

 - Support for several new modern devices got added

 - lots of other fixes, improvements and cleanups

* tag 'media/v3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (544 commits)
  [media] ir-hix5hd2: fix build on c6x arch
  [media] pt3: fix DTV FE I2C driver load error paths
  Revert "[media] media: em28xx - remove reset_resume interface"
  [media] exynos4-is: fix some warnings when compiling on arm64
  [media] usb drivers: use %zu instead of %zd
  [media] pci drivers: use %zu instead of %zd
  [media] dvb-frontends: use %zu instead of %zd
  [media] s5p-mfc: Fix several printk warnings
  [media] s5p_mfc_opr: Fix warnings
  [media] ti-vpe: Fix typecast
  [media] s3c-camif: fix dma_addr_t printks
  [media] s5p_mfc_opr_v6: get rid of warnings when compiled with 64 bits
  [media] s5p_mfc_opr_v5: Fix lots of warnings on x86_64
  [media] em28xx: Fix identation
  [media] drxd: remove a dead code
  [media] saa7146: remove return after BUG()
  [media] cx88: remove return after BUG()
  [media] cx88: fix cards table CodingStyle
  [media] radio-sf16fmr2: declare some structs as static
  [media] radio-sf16fmi: declare pnp_attached as static
  ...
2014-10-10 22:04:49 -04:00
David S. Miller
7b6fa1eef6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
Netfilter fixes for net-next

This batch contains two fixes for what you have in your net-next,
they are:

1) Remove nf_send_reset6() from header file. This function now resides
   in the nf_reject_ipv6 module. Reported by Eric Dumazet.

2) Fix wrong NFT_REJECT_ICMPX_MAX definition and adjust code to fix
   errors reported by Dan Carpenter's static analysis tools.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-10 15:01:09 -04:00
Linus Torvalds
0cf744bc7a Merge branch 'akpm' (fixes from Andrew Morton)
Merge patch-bomb from Andrew Morton:
 - part of OCFS2 (review is laggy again)
 - procfs
 - slab
 - all of MM
 - zram, zbud
 - various other random things: arch, filesystems.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits)
  nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
  include/linux/screen_info.h: remove unused ORIG_* macros
  kernel/sys.c: compat sysinfo syscall: fix undefined behavior
  kernel/sys.c: whitespace fixes
  acct: eliminate compile warning
  kernel/async.c: switch to pr_foo()
  include/linux/blkdev.h: use NULL instead of zero
  include/linux/kernel.h: deduplicate code implementing clamp* macros
  include/linux/kernel.h: rewrite min3, max3 and clamp using min and max
  alpha: use Kbuild logic to include <asm-generic/sections.h>
  frv: remove deprecated IRQF_DISABLED
  frv: remove unused cpuinfo_frv and friends to fix future build error
  zbud: avoid accessing last unused freelist
  zsmalloc: simplify init_zspage free obj linking
  mm/zsmalloc.c: correct comment for fullness group computation
  zram: use notify_free to account all free notifications
  zram: report maximum used memory
  zram: zram memory size limitation
  zsmalloc: change return value unit of zs_get_total_size_bytes
  zsmalloc: move pages_allocated to zs_pool
  ...
2014-10-09 22:26:14 -04:00
Konstantin Khlebnikov
09316c09dd mm/balloon_compaction: add vmstat counters and kpageflags bit
Always mark pages with PageBalloon even if balloon compaction is disabled
and expose this mark in /proc/kpageflags as KPF_BALLOON.

Also this patch adds three counters into /proc/vmstat: "balloon_inflate",
"balloon_deflate" and "balloon_migrate".  They accumulate balloon
activity.  Current size of balloon is (balloon_inflate - balloon_deflate)
pages.

All generic balloon code now gathered under option CONFIG_MEMORY_BALLOON.
It should be selected by ballooning driver which wants use this feature.
Currently virtio-balloon is the only user.

Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:01 -04:00
Cyrill Gorcunov
f606b77f1a prctl: PR_SET_MM -- introduce PR_SET_MM_MAP operation
During development of c/r we've noticed that in case if we need to support
user namespaces we face a problem with capabilities in prctl(PR_SET_MM,
...) call, in particular once new user namespace is created
capable(CAP_SYS_RESOURCE) no longer passes.

A approach is to eliminate CAP_SYS_RESOURCE check but pass all new values
in one bundle, which would allow the kernel to make more intensive test
for sanity of values and same time allow us to support checkpoint/restore
of user namespaces.

Thus a new command PR_SET_MM_MAP introduced. It takes a pointer of
prctl_mm_map structure which carries all the members to be updated.

	prctl(PR_SET_MM, PR_SET_MM_MAP, struct prctl_mm_map *, size)

	struct prctl_mm_map {
		__u64	start_code;
		__u64	end_code;
		__u64	start_data;
		__u64	end_data;
		__u64	start_brk;
		__u64	brk;
		__u64	start_stack;
		__u64	arg_start;
		__u64	arg_end;
		__u64	env_start;
		__u64	env_end;
		__u64	*auxv;
		__u32	auxv_size;
		__u32	exe_fd;
	};

All members except @exe_fd correspond ones of struct mm_struct.  To figure
out which available values these members may take here are meanings of the
members.

 - start_code, end_code: represent bounds of executable code area
 - start_data, end_data: represent bounds of data area
 - start_brk, brk: used to calculate bounds for brk() syscall
 - start_stack: used when accounting space needed for command
   line arguments, environment and shmat() syscall
 - arg_start, arg_end, env_start, env_end: represent memory area
   supplied for command line arguments and environment variables
 - auxv, auxv_size: carries auxiliary vector, Elf format specifics
 - exe_fd: file descriptor number for executable link (/proc/self/exe)

Thus we apply the following requirements to the values

1) Any member except @auxv, @auxv_size, @exe_fd is rather an address
   in user space thus it must be laying inside [mmap_min_addr, mmap_max_addr)
   interval.

2) While @[start|end]_code and @[start|end]_data may point to an nonexisting
   VMAs (say a program maps own new .text and .data segments during execution)
   the rest of members should belong to VMA which must exist.

3) Addresses must be ordered, ie @start_ member must not be greater or
   equal to appropriate @end_ member.

4) As in regular Elf loading procedure we require that @start_brk and
   @brk be greater than @end_data.

5) If RLIMIT_DATA rlimit is set to non-infinity new values should not
   exceed existing limit. Same applies to RLIMIT_STACK.

6) Auxiliary vector size must not exceed existing one (which is
   predefined as AT_VECTOR_SIZE and depends on architecture).

7) File descriptor passed in @exe_file should be pointing
   to executable file (because we use existing prctl_set_mm_exe_file_locked
   helper it ensures that the file we are going to use as exe link has all
   required permission granted).

Now about where these members are involved inside kernel code:

 - @start_code and @end_code are used in /proc/$pid/[stat|statm] output;

 - @start_data and @end_data are used in /proc/$pid/[stat|statm] output,
   also they are considered if there enough space for brk() syscall
   result if RLIMIT_DATA is set;

 - @start_brk shown in /proc/$pid/stat output and accounted in brk()
   syscall if RLIMIT_DATA is set; also this member is tested to
   find a symbolic name of mmap event for perf system (we choose
   if event is generated for "heap" area); one more aplication is
   selinux -- we test if a process has PROCESS__EXECHEAP permission
   if trying to make heap area being executable with mprotect() syscall;

 - @brk is a current value for brk() syscall which lays inside heap
   area, it's shown in /proc/$pid/stat. When syscall brk() succesfully
   provides new memory area to a user space upon brk() completion the
   mm::brk is updated to carry new value;

   Both @start_brk and @brk are actively used in /proc/$pid/maps
   and /proc/$pid/smaps output to find a symbolic name "heap" for
   VMA being scanned;

 - @start_stack is printed out in /proc/$pid/stat and used to
   find a symbolic name "stack" for task and threads in
   /proc/$pid/maps and /proc/$pid/smaps output, and as the same
   as with @start_brk -- perf system uses it for event naming.
   Also kernel treat this member as a start address of where
   to map vDSO pages and to check if there is enough space
   for shmat() syscall;

 - @arg_start, @arg_end, @env_start and @env_end are printed out
   in /proc/$pid/stat. Another access to the data these members
   represent is to read /proc/$pid/environ or /proc/$pid/cmdline.
   Any attempt to read these areas kernel tests with access_process_vm
   helper so a user must have enough rights for this action;

 - @auxv and @auxv_size may be read from /proc/$pid/auxv. Strictly
   speaking kernel doesn't care much about which exactly data is
   sitting there because it is solely for userspace;

 - @exe_fd is referred from /proc/$pid/exe and when generating
   coredump. We uses prctl_set_mm_exe_file_locked helper to update
   this member, so exe-file link modification remains one-shot
   action.

Still note that updating exe-file link now doesn't require sys-resource
capability anymore, after all there is no much profit in preventing setup
own file link (there are a number of ways to execute own code -- ptrace,
ld-preload, so that the only reliable way to find which exactly code is
executed is to inspect running program memory).  Still we require the
caller to be at least user-namespace root user.

I believe the old interface should be deprecated and ripped off in a
couple of kernel releases if no one against.

To test if new interface is implemented in the kernel one can pass
PR_SET_MM_MAP_SIZE opcode and the kernel returns the size of currently
supported struct prctl_mm_map.

[akpm@linux-foundation.org: fix 80-col wordwrap in macro definitions]
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Andrew Vagin <avagin@openvz.org>
Tested-by: Andrew Vagin <avagin@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Julien Tinnes <jln@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:25:55 -04:00
Linus Torvalds
80213c03c4 PCI changes for the v3.18 merge window:
Enumeration
     - Check Vendor ID only for Config Request Retry Status (Rajat Jain)
     - Enable Config Request Retry Status when supported (Rajat Jain)
     - Add generic domain handling (Catalin Marinas)
     - Generate uppercase hex for modalias interface class (Ricardo Ribalda Delgado)
 
   Resource management
     - Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources() (Yinghai Lu)
     - Increase IBM ipr SAS Crocodile BARs to at least system page size (Douglas Lehr)
 
   PCI device hotplug
     - Prevent NULL dereference during pciehp probe (Andreas Noever)
     - Move _HPP & _HPX handling into core (Bjorn Helgaas)
     - Apply _HPP to PCIe devices as well as PCI (Bjorn Helgaas)
     - Apply _HPP/_HPX to display devices (Bjorn Helgaas)
     - Preserve SERR & PARITY settings when applying _HPP/_HPX (Bjorn Helgaas)
     - Preserve MPS and MRRS settings when applying _HPP/_HPX (Bjorn Helgaas)
     - Apply _HPP/_HPX to all devices, not just hot-added ones (Bjorn Helgaas)
     - Fix wait time in pciehp timeout message (Yinghai Lu)
     - Add more pciehp Slot Control debug output (Yinghai Lu)
     - Stop disabling pciehp notifications during init (Yinghai Lu)
 
   MSI
     - Remove arch_msi_check_device() (Alexander Gordeev)
     - Rename pci_msi_check_device() to pci_msi_supported() (Alexander Gordeev)
     - Move D0 check into pci_msi_check_device() (Alexander Gordeev)
     - Remove unused kobject from struct msi_desc (Yijing Wang)
     - Remove "pos" from the struct msi_desc msi_attrib (Yijing Wang)
     - Add "msi_bus" sysfs MSI/MSI-X control for endpoints (Yijing Wang)
     - Use __get_cached_msi_msg() instead of get_cached_msi_msg() (Yijing Wang)
     - Use __read_msi_msg() instead of read_msi_msg() (Yijing Wang)
     - Use __write_msi_msg() instead of write_msi_msg() (Yijing Wang)
 
   Power management
     - Drop unused runtime PM support code for PCIe ports (Rafael J.  Wysocki)
     - Allow PCI devices to be put into D3cold during system suspend (Rafael J. Wysocki)
 
   AER
     - Add additional AER error strings (Gong Chen)
     - Make <linux/aer.h> standalone includable (Thierry Reding)
 
   Virtualization
     - Add ACS quirk for Solarflare SFC9120 & SFC9140 (Alex Williamson)
     - Add ACS quirk for Intel 10G NICs (Alex Williamson)
     - Add ACS quirk for AMD A88X southbridge (Marti Raudsepp)
     - Remove unused pci_find_upstream_pcie_bridge(), pci_get_dma_source() (Alex Williamson)
     - Add device flag helpers (Ethan Zhao)
     - Assume all Mellanox devices have broken INTx masking (Gavin Shan)
 
   Generic host bridge driver
     - Fix ioport_map() for !CONFIG_GENERIC_IOMAP (Liviu Dudau)
     - Add pci_register_io_range() and pci_pio_to_address() (Liviu Dudau)
     - Define PCI_IOBASE as the base of virtual PCI IO space (Liviu Dudau)
     - Fix the conversion of IO ranges into IO resources (Liviu Dudau)
     - Add pci_get_new_domain_nr() and of_get_pci_domain_nr() (Liviu Dudau)
     - Add support for parsing PCI host bridge resources from DT (Liviu Dudau)
     - Add pci_remap_iospace() to map bus I/O resources (Liviu Dudau)
     - Add arm64 architectural support for PCI (Liviu Dudau)
 
   APM X-Gene
     - Add APM X-Gene PCIe driver (Tanmay Inamdar)
     - Add arm64 DT APM X-Gene PCIe device tree nodes (Tanmay Inamdar)
 
   Freescale i.MX6
     - Probe in module_init(), not fs_initcall() (Lucas Stach)
     - Delay enabling reference clock for SS until it stabilizes (Tim Harvey)
 
   Marvell MVEBU
     - Fix uninitialized variable in mvebu_get_tgt_attr() (Thomas Petazzoni)
 
   NVIDIA Tegra
     - Make sure the PCIe PLL is really reset (Eric Yuen)
     - Add error path tegra_msi_teardown_irq() cleanup (Jisheng Zhang)
     - Fix extended configuration space mapping (Peter Daifuku)
     - Implement resource hierarchy (Thierry Reding)
     - Clear CLKREQ# enable on port disable (Thierry Reding)
     - Add Tegra124 support (Thierry Reding)
 
   ST Microelectronics SPEAr13xx
     - Pass config resource through reg property (Pratyush Anand)
 
   Synopsys DesignWare
     - Use NULL instead of false (Fabio Estevam)
     - Parse bus-range property from devicetree (Lucas Stach)
     - Use pci_create_root_bus() instead of pci_scan_root_bus() (Lucas Stach)
     - Remove pci_assign_unassigned_resources() (Lucas Stach)
     - Check private_data validity in single place (Lucas Stach)
     - Setup and clear exactly one MSI at a time (Lucas Stach)
     - Remove open-coded bitmap operations (Lucas Stach)
     - Fix configuration base address when using 'reg' (Minghuan Lian)
     - Fix IO resource end address calculation (Minghuan Lian)
     - Rename get_msi_data() to get_msi_addr() (Minghuan Lian)
     - Add get_msi_data() to pcie_host_ops (Minghuan Lian)
     - Add support for v3.65 hardware (Murali Karicheri)
     - Fold struct pcie_port_info into struct pcie_port (Pratyush Anand)
 
   TI Keystone
     - Add TI Keystone PCIe driver (Murali Karicheri)
     - Limit MRSS for all downstream devices (Murali Karicheri)
     - Assume controller is already in RC mode (Murali Karicheri)
     - Set device ID based on SoC to support multiple ports (Murali Karicheri)
 
   Xilinx AXI
     - Add Xilinx AXI PCIe driver (Srikanth Thokala)
     - Fix xilinx_pcie_assign_msi() return value test (Dan Carpenter)
 
   Miscellaneous
     - Clean up whitespace (Quentin Lambert)
     - Remove assignments from "if" conditions (Quentin Lambert)
     - Move PCI_VENDOR_ID_VMWARE to pci_ids.h (Francesco Ruggeri)
     - x86: Mark DMI tables as initialization data (Mathias Krause)
     - x86: Move __init annotation to the correct place (Mathias Krause)
     - x86: Mark constants of pci_mmcfg_nvidia_mcp55() as __initconst (Mathias Krause)
     - x86: Constify pci_mmcfg_probes[] array (Mathias Krause)
     - x86: Mark PCI BIOS initialization code as such (Mathias Krause)
     - Parenthesize PCI_DEVID and PCI_VPD_LRDT_ID parameters (Megan Kamiya)
     - Remove unnecessary variable in pci_add_dynid() (Tobias Klauser)
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Merge tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "The interesting things here are:

   - Turn on Config Request Retry Status Software Visibility.  This
     caused hangs last time, but we included a fix this time.
   - Rework PCI device configuration to use _HPP/_HPX more aggressively
   - Allow PCI devices to be put into D3cold during system suspend
   - Add arm64 PCI support
   - Add APM X-Gene host bridge driver
   - Add TI Keystone host bridge driver
   - Add Xilinx AXI host bridge driver

  More detailed summary:

  Enumeration
    - Check Vendor ID only for Config Request Retry Status (Rajat Jain)
    - Enable Config Request Retry Status when supported (Rajat Jain)
    - Add generic domain handling (Catalin Marinas)
    - Generate uppercase hex for modalias interface class (Ricardo Ribalda Delgado)

  Resource management
    - Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources() (Yinghai Lu)
    - Increase IBM ipr SAS Crocodile BARs to at least system page size (Douglas Lehr)

  PCI device hotplug
    - Prevent NULL dereference during pciehp probe (Andreas Noever)
    - Move _HPP & _HPX handling into core (Bjorn Helgaas)
    - Apply _HPP to PCIe devices as well as PCI (Bjorn Helgaas)
    - Apply _HPP/_HPX to display devices (Bjorn Helgaas)
    - Preserve SERR & PARITY settings when applying _HPP/_HPX (Bjorn Helgaas)
    - Preserve MPS and MRRS settings when applying _HPP/_HPX (Bjorn Helgaas)
    - Apply _HPP/_HPX to all devices, not just hot-added ones (Bjorn Helgaas)
    - Fix wait time in pciehp timeout message (Yinghai Lu)
    - Add more pciehp Slot Control debug output (Yinghai Lu)
    - Stop disabling pciehp notifications during init (Yinghai Lu)

  MSI
    - Remove arch_msi_check_device() (Alexander Gordeev)
    - Rename pci_msi_check_device() to pci_msi_supported() (Alexander Gordeev)
    - Move D0 check into pci_msi_check_device() (Alexander Gordeev)
    - Remove unused kobject from struct msi_desc (Yijing Wang)
    - Remove "pos" from the struct msi_desc msi_attrib (Yijing Wang)
    - Add "msi_bus" sysfs MSI/MSI-X control for endpoints (Yijing Wang)
    - Use __get_cached_msi_msg() instead of get_cached_msi_msg() (Yijing Wang)
    - Use __read_msi_msg() instead of read_msi_msg() (Yijing Wang)
    - Use __write_msi_msg() instead of write_msi_msg() (Yijing Wang)

  Power management
    - Drop unused runtime PM support code for PCIe ports (Rafael J.  Wysocki)
    - Allow PCI devices to be put into D3cold during system suspend (Rafael J. Wysocki)

  AER
    - Add additional AER error strings (Gong Chen)
    - Make <linux/aer.h> standalone includable (Thierry Reding)

  Virtualization
    - Add ACS quirk for Solarflare SFC9120 & SFC9140 (Alex Williamson)
    - Add ACS quirk for Intel 10G NICs (Alex Williamson)
    - Add ACS quirk for AMD A88X southbridge (Marti Raudsepp)
    - Remove unused pci_find_upstream_pcie_bridge(), pci_get_dma_source() (Alex Williamson)
    - Add device flag helpers (Ethan Zhao)
    - Assume all Mellanox devices have broken INTx masking (Gavin Shan)

  Generic host bridge driver
    - Fix ioport_map() for !CONFIG_GENERIC_IOMAP (Liviu Dudau)
    - Add pci_register_io_range() and pci_pio_to_address() (Liviu Dudau)
    - Define PCI_IOBASE as the base of virtual PCI IO space (Liviu Dudau)
    - Fix the conversion of IO ranges into IO resources (Liviu Dudau)
    - Add pci_get_new_domain_nr() and of_get_pci_domain_nr() (Liviu Dudau)
    - Add support for parsing PCI host bridge resources from DT (Liviu Dudau)
    - Add pci_remap_iospace() to map bus I/O resources (Liviu Dudau)
    - Add arm64 architectural support for PCI (Liviu Dudau)

  APM X-Gene
    - Add APM X-Gene PCIe driver (Tanmay Inamdar)
    - Add arm64 DT APM X-Gene PCIe device tree nodes (Tanmay Inamdar)

  Freescale i.MX6
    - Probe in module_init(), not fs_initcall() (Lucas Stach)
    - Delay enabling reference clock for SS until it stabilizes (Tim Harvey)

  Marvell MVEBU
    - Fix uninitialized variable in mvebu_get_tgt_attr() (Thomas Petazzoni)

  NVIDIA Tegra
    - Make sure the PCIe PLL is really reset (Eric Yuen)
    - Add error path tegra_msi_teardown_irq() cleanup (Jisheng Zhang)
    - Fix extended configuration space mapping (Peter Daifuku)
    - Implement resource hierarchy (Thierry Reding)
    - Clear CLKREQ# enable on port disable (Thierry Reding)
    - Add Tegra124 support (Thierry Reding)

  ST Microelectronics SPEAr13xx
    - Pass config resource through reg property (Pratyush Anand)

  Synopsys DesignWare
    - Use NULL instead of false (Fabio Estevam)
    - Parse bus-range property from devicetree (Lucas Stach)
    - Use pci_create_root_bus() instead of pci_scan_root_bus() (Lucas Stach)
    - Remove pci_assign_unassigned_resources() (Lucas Stach)
    - Check private_data validity in single place (Lucas Stach)
    - Setup and clear exactly one MSI at a time (Lucas Stach)
    - Remove open-coded bitmap operations (Lucas Stach)
    - Fix configuration base address when using 'reg' (Minghuan Lian)
    - Fix IO resource end address calculation (Minghuan Lian)
    - Rename get_msi_data() to get_msi_addr() (Minghuan Lian)
    - Add get_msi_data() to pcie_host_ops (Minghuan Lian)
    - Add support for v3.65 hardware (Murali Karicheri)
    - Fold struct pcie_port_info into struct pcie_port (Pratyush Anand)

  TI Keystone
    - Add TI Keystone PCIe driver (Murali Karicheri)
    - Limit MRSS for all downstream devices (Murali Karicheri)
    - Assume controller is already in RC mode (Murali Karicheri)
    - Set device ID based on SoC to support multiple ports (Murali Karicheri)

  Xilinx AXI
    - Add Xilinx AXI PCIe driver (Srikanth Thokala)
    - Fix xilinx_pcie_assign_msi() return value test (Dan Carpenter)

  Miscellaneous
    - Clean up whitespace (Quentin Lambert)
    - Remove assignments from "if" conditions (Quentin Lambert)
    - Move PCI_VENDOR_ID_VMWARE to pci_ids.h (Francesco Ruggeri)
    - x86: Mark DMI tables as initialization data (Mathias Krause)
    - x86: Move __init annotation to the correct place (Mathias Krause)
    - x86: Mark constants of pci_mmcfg_nvidia_mcp55() as __initconst (Mathias Krause)
    - x86: Constify pci_mmcfg_probes[] array (Mathias Krause)
    - x86: Mark PCI BIOS initialization code as such (Mathias Krause)
    - Parenthesize PCI_DEVID and PCI_VPD_LRDT_ID parameters (Megan Kamiya)
    - Remove unnecessary variable in pci_add_dynid() (Tobias Klauser)"

* tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (109 commits)
  arm64: dts: Add APM X-Gene PCIe device tree nodes
  PCI: Add ACS quirk for AMD A88X southbridge devices
  PCI: xgene: Add APM X-Gene PCIe driver
  PCI: designware: Remove open-coded bitmap operations
  PCI/MSI: Remove unnecessary temporary variable
  PCI/MSI: Use __write_msi_msg() instead of write_msi_msg()
  MSI/powerpc: Use __read_msi_msg() instead of read_msi_msg()
  PCI/MSI: Use __get_cached_msi_msg() instead of get_cached_msi_msg()
  PCI/MSI: Add "msi_bus" sysfs MSI/MSI-X control for endpoints
  PCI/MSI: Remove "pos" from the struct msi_desc msi_attrib
  PCI/MSI: Remove unused kobject from struct msi_desc
  PCI/MSI: Rename pci_msi_check_device() to pci_msi_supported()
  PCI/MSI: Move D0 check into pci_msi_check_device()
  PCI/MSI: Remove arch_msi_check_device()
  irqchip: armada-370-xp: Remove arch_msi_check_device()
  PCI/MSI/PPC: Remove arch_msi_check_device()
  arm64: Add architectural support for PCI
  PCI: Add pci_remap_iospace() to map bus I/O resources
  of/pci: Add support for parsing PCI host bridge resources from DT
  of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()
  ...

Conflicts:
	arch/arm64/boot/dts/apm-storm.dtsi
2014-10-09 15:03:49 -04:00
Martin Schwidefsky
8070361799 s390: add support for vector extension
The vector extension introduces 32 128-bit vector registers and a set of
instruction to operate on the vector registers.

The kernel can control the use of vector registers for the problem state
program with a bit in control register 0. Once enabled for a process the
kernel needs to retain the content of the vector registers on context
switch. The signal frame is extended to include the vector registers.
Two new register sets NT_S390_VXRS_LOW and NT_S390_VXRS_HIGH are added
to the regset interface for the debugger and core dumps.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-10-09 09:14:13 +02:00
Linus Torvalds
35a9ad8af0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Most notable changes in here:

   1) By far the biggest accomplishment, thanks to a large range of
      contributors, is the addition of multi-send for transmit.  This is
      the result of discussions back in Chicago, and the hard work of
      several individuals.

      Now, when the ->ndo_start_xmit() method of a driver sees
      skb->xmit_more as true, it can choose to defer the doorbell
      telling the driver to start processing the new TX queue entires.

      skb->xmit_more means that the generic networking is guaranteed to
      call the driver immediately with another SKB to send.

      There is logic added to the qdisc layer to dequeue multiple
      packets at a time, and the handling mis-predicted offloads in
      software is now done with no locks held.

      Finally, pktgen is extended to have a "burst" parameter that can
      be used to test a multi-send implementation.

      Several drivers have xmit_more support: i40e, igb, ixgbe, mlx4,
      virtio_net

      Adding support is almost trivial, so export more drivers to
      support this optimization soon.

      I want to thank, in no particular or implied order, Jesper
      Dangaard Brouer, Eric Dumazet, Alexander Duyck, Tom Herbert, Jamal
      Hadi Salim, John Fastabend, Florian Westphal, Daniel Borkmann,
      David Tat, Hannes Frederic Sowa, and Rusty Russell.

   2) PTP and timestamping support in bnx2x, from Michal Kalderon.

   3) Allow adjusting the rx_copybreak threshold for a driver via
      ethtool, and add rx_copybreak support to enic driver.  From
      Govindarajulu Varadarajan.

   4) Significant enhancements to the generic PHY layer and the bcm7xxx
      driver in particular (EEE support, auto power down, etc.) from
      Florian Fainelli.

   5) Allow raw buffers to be used for flow dissection, allowing drivers
      to determine the optimal "linear pull" size for devices that DMA
      into pools of pages.  The objective is to get exactly the
      necessary amount of headers into the linear SKB area pre-pulled,
      but no more.  The new interface drivers use is eth_get_headlen().
      From WANG Cong, with driver conversions (several had their own
      by-hand duplicated implementations) by Alexander Duyck and Eric
      Dumazet.

   6) Support checksumming more smoothly and efficiently for
      encapsulations, and add "foo over UDP" facility.  From Tom
      Herbert.

   7) Add Broadcom SF2 switch driver to DSA layer, from Florian
      Fainelli.

   8) eBPF now can load programs via a system call and has an extensive
      testsuite.  Alexei Starovoitov and Daniel Borkmann.

   9) Major overhaul of the packet scheduler to use RCU in several major
      areas such as the classifiers and rate estimators.  From John
      Fastabend.

  10) Add driver for Intel FM10000 Ethernet Switch, from Alexander
      Duyck.

  11) Rearrange TCP_SKB_CB() to reduce cache line misses, from Eric
      Dumazet.

  12) Add Datacenter TCP congestion control algorithm support, From
      Florian Westphal.

  13) Reorganize sk_buff so that __copy_skb_header() is significantly
      faster.  From Eric Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1558 commits)
  netlabel: directly return netlbl_unlabel_genl_init()
  net: add netdev_txq_bql_{enqueue, complete}_prefetchw() helpers
  net: description of dma_cookie cause make xmldocs warning
  cxgb4: clean up a type issue
  cxgb4: potential shift wrapping bug
  i40e: skb->xmit_more support
  net: fs_enet: Add NAPI TX
  net: fs_enet: Remove non NAPI RX
  r8169:add support for RTL8168EP
  net_sched: copy exts->type in tcf_exts_change()
  wimax: convert printk to pr_foo()
  af_unix: remove 0 assignment on static
  ipv6: Do not warn for informational ICMP messages, regardless of type.
  Update Intel Ethernet Driver maintainers list
  bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING
  tipc: fix bug in multicast congestion handling
  net: better IFF_XMIT_DST_RELEASE support
  net/mlx4_en: remove NETDEV_TX_BUSY
  3c59x: fix bad split of cpu_to_le32(pci_map_single())
  net: bcmgenet: fix Tx ring priority programming
  ...
2014-10-08 21:40:54 -04:00
Linus Torvalds
6dea0737bc Merge branch 'for-3.18' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
 "Highlights:

   - support the NFSv4.2 SEEK operation (allowing clients to support
     SEEK_HOLE/SEEK_DATA), thanks to Anna.
   - end the grace period early in a number of cases, mitigating a
     long-standing annoyance, thanks to Jeff
   - improve SMP scalability, thanks to Trond"

* 'for-3.18' of git://linux-nfs.org/~bfields/linux: (55 commits)
  nfsd: eliminate "to_delegation" define
  NFSD: Implement SEEK
  NFSD: Add generic v4.2 infrastructure
  svcrdma: advertise the correct max payload
  nfsd: introduce nfsd4_callback_ops
  nfsd: split nfsd4_callback initialization and use
  nfsd: introduce a generic nfsd4_cb
  nfsd: remove nfsd4_callback.cb_op
  nfsd: do not clear rpc_resp in nfsd4_cb_done_sequence
  nfsd: fix nfsd4_cb_recall_done error handling
  nfsd4: clarify how grace period ends
  nfsd4: stop grace_time update at end of grace period
  nfsd: skip subsequent UMH "create" operations after the first one for v4.0 clients
  nfsd: set and test NFSD4_CLIENT_STABLE bit to reduce nfsdcltrack upcalls
  nfsd: serialize nfsdcltrack upcalls for a particular client
  nfsd: pass extra info in env vars to upcalls to allow for early grace period end
  nfsd: add a v4_end_grace file to /proc/fs/nfsd
  lockd: add a /proc/fs/lockd/nlm_end_grace file
  nfsd: reject reclaim request when client has already sent RECLAIM_COMPLETE
  nfsd: remove redundant boot_time parm from grace_done client tracking op
  ...
2014-10-08 12:51:44 -04:00
Linus Torvalds
ef0625b70d Char/Misc driver patches for 3.18-rc1
Here's the big set of driver patches for char/misc drivers.  Nothing
 major in here, the shortlog below goes into the details.  All have been
 in the linux-next tree for a while with no issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here's the big set of driver patches for char/misc drivers.  Nothing
  major in here, the shortlog goes into the details.  All have been in
  the linux-next tree for a while with no issues"

* tag 'char-misc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (80 commits)
  mei: mei_txe_fw_sts can be static
  mei: fix kernel-doc warnings
  mei: fix KDoc documentation formatting
  mei: drop me_client_presentation_num
  mei: trivial: fix errors in prints in comments
  mei: remove include to pci header from mei module files
  mei: push pci cfg structure me hw
  mei: remove the reference to pdev from mei_device
  mei: move fw_status back to hw ops handlers
  mei: get rid of most of the pci dependencies in mei
  mei: push all standard settings into mei_device_init
  mei: move mei_hbm_hdr function from hbm.h the hbm.c
  mei: kill error message for allocation failure
  mei: nfc: fix style warning
  mei: fix style warning: Missing a blank line after declarations
  mei: pg: fix cat and paste error in comments
  mei: debugfs: add single buffer indicator
  mei: debugfs: adjust print buffer
  mei: add hbm and pg state in devstate debugfs print
  Drivers: hv: vmbus: Enable interrupt driven flow control
  ...
2014-10-08 06:55:41 -04:00
Linus Torvalds
683a52a101 TTY/Serial driver patches for 3.18-rc1
Here's the big tty/serial driver patchset for 3.18-rc1.
 
 Lots of little things in here, some good work from Peter Hurley on the
 tty core, and in lots of drivers.  There are also lots of other driver
 updates in here as well, full details in the changelog below.
 
 All have been in the linux-next tree for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here's the big tty/serial driver patchset for 3.18-rc1.

  Lots of little things in here, some good work from Peter Hurley on the
  tty core, and in lots of drivers.  There are also lots of other driver
  updates in here as well, full details in the changelogs.

  All have been in the linux-next tree for a while"

* tag 'tty-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (99 commits)
  Revert "serial/core: Initialize the console pm state"
  tty: serial: 8250: use 32bit variable for rpm_tx_active
  tty: serial: msm: Add earlycon support
  serial/core: Initialize the console pm state
  serial: asc: Conditionally use readl_relaxed (COMPILE_TEST)
  serial: of-serial: add PM suspend/resume support
  m68k: AMIGA_BUILTIN_SERIAL should depend on TTY
  asm/uapi: Add definition of TIOC[SG]RS485
  tty/metag_da: Add console_poll module parameter
  serial: 8250_pci: remove rts_n override from Baytrail quirk
  serial: cadence: Add generic earlycon support
  serial: imx: change the wait even to interruptiable
  serial: imx: terminate the RX DMA when the UART is suspending
  serial: imx: fix throttle/unthrottle callbacks for hardware assisted flow control
  serial: 8250: Add Quark X1000 to 8250_pci.c
  tty: omap-serial: pull out calculation from baud_is_mode16
  tty: omap-serial: fix division by zero
  xen_hvc: no reason to write the type key on xenstore
  tty: serial: 8250_core: remove UART_IER_RDI in serial8250_stop_rx()
  tty: serial: 8250_core: use the ->line argument as a hint in serial8250_find_match_or_unused()
  ...
2014-10-08 06:52:11 -04:00
Linus Torvalds
463311960e USB patches for 3.18-rc1
Here's the big USB patchset for 3.18-rc1.  Also in here is the PHY tree,
 as it seems to fit well with the USB tree for various reasons...
 
 Anyway, lots of little changes in here, all over the place, full details
 in the changelog below.
 
 All have been in the linux-next tree for a while with no issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here's the big USB patchset for 3.18-rc1.  Also in here is the PHY
  tree, as it seems to fit well with the USB tree for various reasons...

  Anyway, lots of little changes in here, all over the place, full
  details in the changelog

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

* tag 'usb-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (244 commits)
  USB: host: st: fix typo 'CONFIG_USB_EHCI_HCD_ST'
  uas: Reduce number of function arguments for uas_alloc_foo functions
  xhci: Allow xHCI drivers to be built as separate modules
  xhci: Export symbols used by host-controller drivers
  xhci: Check for XHCI_COMP_MODE_QUIRK when disabling D3cold
  xhci: Introduce xhci_init_driver()
  usb: hcd: add generic PHY support
  usb: rename phy to usb_phy in HCD
  usb: gadget: uvc: fix up uvcg_v4l2_get_unmapped_area typo
  USB: host: st: fix ehci/ohci driver selection
  usb: host: ehci-exynos: Remove unnecessary usb-phy support
  usb: core: return -ENOTSUPP for all targeted hosts
  USB: Remove .owner field for driver
  usb: core: log higher level message on malformed LANGID descriptor
  usb: Add LED triggers for USB activity
  usb: Rename usb-common.c
  usb: gadget: Refactor request completion
  usb: gadget: Introduce usb_gadget_giveback_request()
  usb: dwc2/gadget: move phy bus legth initialization
  phy: remove .owner field for drivers using module_platform_driver
  ...
2014-10-08 06:47:31 -04:00
Linus Torvalds
e4e65676f2 Fixes and features for 3.18.
Apart from the usual cleanups, here is the summary of new features:
 
 - s390 moves closer towards host large page support
 
 - PowerPC has improved support for debugging (both inside the guest and
   via gdbstub) and support for e6500 processors
 
 - ARM/ARM64 support read-only memory (which is necessary to put firmware
   in emulated NOR flash)
 
 - x86 has the usual emulator fixes and nested virtualization improvements
   (including improved Windows support on Intel and Jailhouse hypervisor
   support on AMD), adaptive PLE which helps overcommitting of huge guests.
   Also included are some patches that make KVM more friendly to memory
   hot-unplug, and fixes for rare caching bugs.
 
 Two patches have trivial mm/ parts that were acked by Rik and Andrew.
 
 Note: I will soon switch to a subkey for signing purposes.  To verify
 future signed pull requests from me, please update my key with
 "gpg --recv-keys 9B4D86F2".  You should see 3 new subkeys---the
 one for signing will be a 2048-bit RSA key, 4E6B09D7.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "Fixes and features for 3.18.

  Apart from the usual cleanups, here is the summary of new features:

   - s390 moves closer towards host large page support

   - PowerPC has improved support for debugging (both inside the guest
     and via gdbstub) and support for e6500 processors

   - ARM/ARM64 support read-only memory (which is necessary to put
     firmware in emulated NOR flash)

   - x86 has the usual emulator fixes and nested virtualization
     improvements (including improved Windows support on Intel and
     Jailhouse hypervisor support on AMD), adaptive PLE which helps
     overcommitting of huge guests.  Also included are some patches that
     make KVM more friendly to memory hot-unplug, and fixes for rare
     caching bugs.

  Two patches have trivial mm/ parts that were acked by Rik and Andrew.

  Note: I will soon switch to a subkey for signing purposes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (157 commits)
  kvm: do not handle APIC access page if in-kernel irqchip is not in use
  KVM: s390: count vcpu wakeups in stat.halt_wakeup
  KVM: s390/facilities: allow TOD-CLOCK steering facility bit
  KVM: PPC: BOOK3S: HV: CMA: Reserve cma region only in hypervisor mode
  arm/arm64: KVM: Report correct FSC for unsupported fault types
  arm/arm64: KVM: Fix VTTBR_BADDR_MASK and pgd alloc
  kvm: Fix kvm_get_page_retry_io __gup retval check
  arm/arm64: KVM: Fix set_clear_sgi_pend_reg offset
  kvm: x86: Unpin and remove kvm_arch->apic_access_page
  kvm: vmx: Implement set_apic_access_page_addr
  kvm: x86: Add request bit to reload APIC access page address
  kvm: Add arch specific mmu notifier for page invalidation
  kvm: Rename make_all_cpus_request() to kvm_make_all_cpus_request() and make it non-static
  kvm: Fix page ageing bugs
  kvm/x86/mmu: Pass gfn and level to rmapp callback.
  x86: kvm: use alternatives for VMCALL vs. VMMCALL if kernel text is read-only
  kvm: x86: use macros to compute bank MSRs
  KVM: x86: Remove debug assertion of non-PAE reserved bits
  kvm: don't take vcpu mutex for obviously invalid vcpu ioctls
  kvm: Faults which trigger IO release the mmap_sem
  ...
2014-10-08 05:27:39 -04:00
Ian Munsie
a9282d01cf cxl: Add documentation for userspace APIs
This documentation gives an overview of the hardware architecture, userspace
APIs via /dev/cxl/afuM.N and the syfs files. It also adds a MAINTAINERS file
entry for cxl.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 20:16:19 +11:00
Ian Munsie
66b43081c0 cxl: Add userspace header file
This adds a header file for use by userspace programs wanting to interact with
the kernel cxl driver.  It defines structs and magic numbers required for
userspace to interact with devices in /dev/cxl/afuM.N.

Further documentation on this interface is added in a subsequent patch in
Documentation/powerpc/cxl.txt.

It also adds this new userspace header file to Kbuild so it's exported when
doing "make headers_installs".

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 20:15:57 +11:00
Linus Torvalds
39520eea19 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:

 - quirk for devices that need to be pulled in much more aggresive way
   than mandated, by Johan Hovold

 - robustification of sanity checking of incoming reports in RMI driver,
   by Benjamin Tissoires

 - fixes, updates, and new HW support to SONY driver, by Frank Praznik

 - port of uHID to the new transport layer layout, by David Herrmann

 - robustification of Clear-Halt/reset in USB HID, by Alan Stern

 - native support for hopefully any future HID compliant wacom tablet.
   Those found on the various laptops (ISDv4/5) already are HID
   compliant and they should work in the future without any modification
   of the kernel.  Written by Benjamin Tissoires.

 - a lot more simple fixes and device ID additions all over the place

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (45 commits)
  HID: uHID: fix excepted report type
  HID: usbhid: add another mouse that needs QUIRK_ALWAYS_POLL
  HID: wacom: implement the finger part of the HID generic handling
  HID: wacom: implement generic HID handling for pen generic devices
  HID: wacom: move allocation of inputs earlier
  HID: wacom: split out input allocation and registration
  HID: wacom: rename failN with some meaningful information
  HID: sony: Update the DualShock 4 touchpad resolution
  HID: wacom: fix timeout on probe for some wacoms
  HID: sony: Set touchpad bits in the input_configured callback
  HID: sony: Update file header and correct comments
  HID: sony: Corrections for the DualShock 4 HID descriptor
  HID: rmi: check sanity of the incoming report
  HID: wacom: make the WL connection friendly for the desktop
  HID: wacom - enable LED support for Wireless Intuos5/Pro
  HID: wacom - remove report_id from wacom_get_report interface
  HID: wacom - Clean up of sysfs
  HID: wacom - Add default permission defines for sysfs attributes
  HID: usbhid: fix PIXART optical mouse
  HID: Add Holtek USB ID 04d9:a0c2 ETEKCITY Scroll
  ...
2014-10-07 21:17:29 -04:00
Pablo Neira Ayuso
f0d1f04f0a netfilter: fix wrong arithmetics regarding NFT_REJECT_ICMPX_MAX
NFT_REJECT_ICMPX_MAX should be __NFT_REJECT_ICMPX_MAX - 1.

nft_reject_icmp_code() and nft_reject_icmpv6_code() are called from the
packet path, so BUG_ON in case we try to access an unknown abstracted
ICMP code. This should not happen since we already validate this from
nft_reject_{inet,bridge}_init().

Fixes: 51b0a5d ("netfilter: nft_reject: introduce icmp code abstraction for inet and bridge")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-10-07 20:16:31 +02:00
Jiri Kosina
ee5db7e47f Merge branches 'for-3.18/always-poll-quirk', 'for-3.18/logitech', 'for-3.18/picolcd', 'for-3.18/rmi', 'for-3.18/sony', 'for-3.18/uhid', 'for-3.18/upstream' and 'for-3.18/wacom' into for-linus 2014-10-06 23:34:40 +02:00
Takashi Iwai
8df22a4d6f ASoC: Updates for v3.18
- More componentisation work from Lars-Peter, this time mainly
    cleaning up the suspend and bias level transition callbacks.
  - Real system support for the Intel drivers and a bunch of fixes and
    enhancements for the associated CODEC drivers, this is going to need
    a lot quirks over time due to the lack of any firmware description of
    the boards.
  - Jack detect support for simple card from Dylan Reid.
  - A bunch of small fixes and enhancements for the Freescale drivers.
  - New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32, Everest
    Semiconductor ES8328 and Freescale cards using the ASRC in newer i.MX
    processors.
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Merge tag 'asoc-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v3.18

 - More componentisation work from Lars-Peter, this time mainly
   cleaning up the suspend and bias level transition callbacks.
 - Real system support for the Intel drivers and a bunch of fixes and
   enhancements for the associated CODEC drivers, this is going to need
   a lot quirks over time due to the lack of any firmware description of
   the boards.
 - Jack detect support for simple card from Dylan Reid.
 - A bunch of small fixes and enhancements for the Freescale drivers.
 - New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32, Everest
   Semiconductor ES8328 and Freescale cards using the ASRC in newer i.MX
   processors.
2014-10-06 14:01:11 +02:00
Eric Dumazet
1255a50554 ethtool: Ethtool parameter to dynamically change tx_copybreak
Use new ethtool [sg]et_tunable() to set tx_copybread (inline threshold)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-06 01:04:16 -04:00
Jesse Gross
f579668406 openvswitch: Add support for Geneve tunneling.
The Openvswitch implementation is completely agnostic to the options
that are in use and can handle newly defined options without
further work. It does this by simply matching on a byte array
of options and allowing userspace to setup flows on this array.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Singed-off-by: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-06 00:32:21 -04:00
Jesse Gross
f0b128c1e2 openvswitch: Wrap struct ovs_key_ipv4_tunnel in a new structure.
Currently, the flow information that is matched for tunnels and
the tunnel data passed around with packets is the same. However,
as additional information is added this is not necessarily desirable,
as in the case of pointers.

This adds a new structure for tunnel metadata which currently contains
only the existing struct. This change is purely internal to the kernel
since the current OVS_KEY_ATTR_IPV4_TUNNEL is simply a compressed version
of OVS_KEY_ATTR_TUNNEL that is translated at flow setup.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-06 00:32:20 -04:00
Jesse Gross
67fa034194 openvswitch: Add support for matching on OAM packets.
Some tunnel formats have mechanisms for indicating that packets are
OAM frames that should be handled specially (either as high priority or
not forwarded beyond an endpoint). This provides support for allowing
those types of packets to be matched.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-06 00:32:20 -04:00
David S. Miller
a4b4a2b7f9 Merge tag 'master-2014-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:

====================
pull request: wireless-next 2014-10-03

Please pull tihs batch of updates intended for the 3.18 stream!

For the iwlwifi bits, Emmanuel says:

"I have here a few things that depend on the latest mac80211's changes:
RRM, TPC, Quiet Period etc...  Eyal keeps improving our rate control
and we have a new device ID. This last patch should probably have
gone to wireless.git, but at that stage, I preferred to send it to
-next and CC stable."

For (most of) the Atheros bits, Kalle says:

"The only new feature is testmode support from me. Ben added a new method
to crash the firmware with an assert for debug purposes. As usual, we
have lots of smaller fixes from Michal. Matteo fixed a Kconfig
dependency with debugfs. I fixed some warnings recently added to
checkpatch."

For the NFC bits, Samuel says:

"We've had major updates for TI and ST Microelectronics drivers, and a
few NCI related changes.

For TI's trf7970a driver:

- Target mode support for trf7970a
- Suspend/resume support for trf7970a
- DT properties additions to handle different quirks
- A bunch of fixes for smartphone IOP related issues

For ST Microelectronics' ST21NFCA and ST21NFCB drivers:

- ISO15693 support for st21nfcb
- checkpatch and sparse related warning fixes
- Code cleanups and a few minor fixes

Finally, Marvell added ISO15693 support to the NCI stack, together with a
couple of NCI fixes."

For the Bluetooth bits, Johan says:

"This 3.18 pull request replaces the one I did on Monday ("bluetooth-next
2014-09-22", which hasn't been pulled yet). The additions since the last
request are:

 - SCO connection fix for devices not supporting eSCO
 - Cleanups regarding the SCO establishment logic
 - Remove unnecessary return value from logging functions
 - Header compression fix for 6lowpan
 - Cleanups to the ieee802154/mrf24j40 driver

Here's a copy from previous request that this one replaces:

'
Here are some more patches for 3.18. They include various fixes to the
btusb HCI driver, a fix for LE SMP, as well as adding Jukka to the
MAINTAINERS file for generic 6LoWPAN (as requested by Alexander Aring).

I've held on to this pull request a bit since we were waiting for a SCO
related fix to get sorted out first. However, since the merge window is
getting closer I decided not to wait for it. If we do get the fix sorted
out there'll probably be a second small pull request later this week.
'"

And,

"Unless 3.17 gets delayed this will probably be our last -next pull request for
3.18. We've got:

  - New Marvell hardware supportr
  - Multicast support for 6lowpan
  - Several of 6lowpan fixes & cleanups
  - Fix for a (false-positive) lockdep warning in L2CAP
  - Minor btusb cleanup"

On top of all that comes the usual sort of updates to ath5k, ath9k,
ath10k, brcmfmac, mwifiex, and wil6210.  This time around there are
also a number of rtlwifi updates to enable some new hardware and
to reconcile the in-kernel drivers with some newer releases of the
Realtek vendor drivers.  Also of note is some device tree work for
the bcma bus.

Please let me know if there are problems!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-05 21:34:39 -04:00
David S. Miller
61b37d2f54 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 another batch with Netfilter/IPVS updates
for net-next, they are:

1) Add abstracted ICMP codes to the nf_tables reject expression. We
   introduce four reasons to reject using ICMP that overlap in IPv4
   and IPv6 from the semantic point of view. This should simplify the
   maintainance of dual stack rule-sets through the inet table.

2) Move nf_send_reset() functions from header files to per-family
   nf_reject modules, suggested by Patrick McHardy.

3) We have to use IS_ENABLED(CONFIG_BRIDGE_NETFILTER) everywhere in the
   code now that br_netfilter can be modularized. Convert remaining spots
   in the network stack code.

4) Use rcu_barrier() in the nf_tables module removal path to ensure that
   we don't leave object that are still pending to be released via
   call_rcu (that may likely result in a crash).

5) Remove incomplete arch 32/64 compat from nft_compat. The original (bad)
   idea was to probe the word size based on the xtables match/target info
   size, but this assumption is wrong when you have to dump the information
   back to userspace.

6) Allow to filter from prerouting and postrouting in the nf_tables bridge.
   In order to emulate the ebtables NAT chains (which are actually simple
   filter chains with no special semantics), we have support filtering from
   this hooks too.

7) Add explicit module dependency between xt_physdev and br_netfilter.
   This provides a way to detect if the user needs br_netfilter from
   the configuration path. This should reduce the breakage of the
   br_netfilter modularization.

8) Cleanup coding style in ip_vs.h, from Simon Horman.

9) Fix crash in the recently added nf_tables masq expression. We have
   to register/unregister the notifiers to clean up the conntrack table
   entries from the module init/exit path, not from the rule addition /
   deletion path. From Arturo Borrero.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-05 21:32:37 -04:00
Benjamin Marzinski
86f1152b11 dm: allow active and inactive tables to share dm_devs
Until this change, when loading a new DM table, DM core would re-open
all of the devices in the DM table.  Now, DM core will avoid redundant
device opens (and closes when destroying the old table) if the old
table already has a device open using the same mode.  This is achieved
by managing reference counts on the table_devices that DM core now
stores in the mapped_device structure (rather than in the dm_table
structure).  So a mapped_device's active and inactive dm_tables' dm_dev
lists now just point to the dm_devs stored in the mapped_device's
table_devices list.

This improvement in DM core's device reference counting has the
side-effect of fixing a long-standing limitation of the multipath
target: a DM multipath table couldn't include any paths that were unusable
(failed).  For example: if all paths have failed and you add a new,
working, path to the table; you can't use it since the table load would
fail due to it still containing failed paths.  Now a re-load of a
multipath table can include failed devices and when those devices become
active again they can be used instantly.

The device list code in dm.c isn't a straight copy/paste from the code in
dm-table.c, but it's very close (aside from some variable renames).  One
subtle difference is that find_table_device for the tables_devices list
will only match devices with the same name and mode.  This is because we
don't want to upgrade a device's mode in the active table when an
inactive table is loaded.

Access to the mapped_device structure's tables_devices list requires a
mutex (tables_devices_lock), so that tables cannot be created and
destroyed concurrently.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-10-05 20:03:35 -04:00
Tom Herbert
bc1fc390e1 ip_tunnel: Add GUE support
This patch allows configuring IPIP, sit, and GRE tunnels to use GUE.
This is very similar to fou excpet that we need to insert the GUE header
in addition to the UDP header on transmit.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-03 16:53:33 -07:00
Tom Herbert
37dd024779 gue: Receive side for Generic UDP Encapsulation
This patch adds support receiving for GUE packets in the fou module. The
fou module now supports direct foo-over-udp (no encapsulation header)
and GUE. To support this a type parameter is added to the fou netlink
parameters.

For a GUE socket we define gue_udp_recv, gue_gro_receive, and
gue_gro_complete to handle the specifics of the GUE protocol. Most
of the code to manage and configure sockets is common with the fou.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-03 16:53:33 -07:00
Vladimir Kondratiev
dba4b74d2d wil6210: atomic I/O for the card memory
Introduce netdev IOCTLs, to be used by the debug tools.

Allows to read/write single dword value or
memory block, aligned to dword
Different address modes supported:
- BAR offset
- Firmware "linker" address
- target's AHB bus

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-02 14:23:14 -04:00
Pablo Neira Ayuso
51b0a5d8c2 netfilter: nft_reject: introduce icmp code abstraction for inet and bridge
This patch introduces the NFT_REJECT_ICMPX_UNREACH type which provides
an abstraction to the ICMP and ICMPv6 codes that you can use from the
inet and bridge tables, they are:

* NFT_REJECT_ICMPX_NO_ROUTE: no route to host - network unreachable
* NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
* NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
* NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratevely prohibited

You can still use the specific codes when restricting the rule to match
the corresponding layer 3 protocol.

I decided to not overload the existing NFT_REJECT_ICMP_UNREACH to have
different semantics depending on the table family and to allow the user
to specify ICMP family specific codes if they restrict it to the
corresponding family.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-10-02 18:29:57 +02:00
Bjorn Helgaas
cc0cb67adb Merge branches 'pci/aer' and 'pci/virtualization' into next
* pci/aer:
  PCI/AER: Rename PCI_ERR_UNC_TRAIN to PCI_ERR_UNC_UND
  PCI/AER: Add additional PCIe AER error strings
  trace, RAS: Add additional PCIe AER error strings
  trace, RAS: Replace bare numbers with #defines for PCIe AER error strings

* pci/virtualization:
  PCI: Add ACS quirk for Intel 10G NICs
2014-10-01 12:30:58 -06:00
Michael Braun
79cf79abce macvlan: add source mode
This patch adds a new mode of operation to macvlan, called "source".
It allows one to set a list of allowed mac address, which is used
to match against source mac address from received frames on underlying
interface.
This enables creating mac based VLAN associations, instead of standard
port or tag based. The feature is useful to deploy 802.1x mac based
behavior, where drivers of underlying interfaces doesn't allows that.

Configuration is done through the netlink interface using e.g.:
 ip link add link eth0 name macvlan0 type macvlan mode source
 ip link add link eth0 name macvlan1 type macvlan mode source
 ip link set link dev macvlan0 type macvlan macaddr add 00:11:11:11:11:11
 ip link set link dev macvlan0 type macvlan macaddr add 00:22:22:22:22:22
 ip link set link dev macvlan0 type macvlan macaddr add 00:33:33:33:33:33
 ip link set link dev macvlan1 type macvlan macaddr add 00:33:33:33:33:33
 ip link set link dev macvlan1 type macvlan macaddr add 00:44:44:44:44:44

This allows clients with MAC addresses 00:11:11:11:11:11,
00:22:22:22:22:22 to be part of only VLAN associated with macvlan0
interface. Clients with MAC addresses 00:44:44:44:44:44 with only VLAN
associated with macvlan1 interface. And client with MAC address
00:33:33:33:33:33 to be associated with both VLANs.

Based on work of Stefan Gula <steweg@gmail.com>

v8: last version of Stefan Gula for Kernel 3.2.1
v9: rework onto linux-next 2014-03-12 by Michael Braun
    add MACADDR_SET command, enable to configure mac for source mode
    while creating interface
v10:
  - reduce indention level
  - rename source_list to source_entry
  - use aligned 64bit ether address
  - use hash_64 instead of addr[5]
v11:
  - rebase for 3.14 / linux-next 20.04.2014
v12
  - rebase for linux-next 2014-09-25

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29 15:37:01 -04:00
David S. Miller
852248449c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
pull request: netfilter/ipvs updates for net-next

The following patchset contains Netfilter/IPVS updates for net-next,
most relevantly they are:

1) Four patches to make the new nf_tables masquerading support
   independent of the x_tables infrastructure. This also resolves a
   compilation breakage if the masquerade target is disabled but the
   nf_tables masq expression is enabled.

2) ipset updates via Jozsef Kadlecsik. This includes the addition of the
   skbinfo extension that allows you to store packet metainformation in the
   elements. This can be used to fetch and restore this to the packets through
   the iptables SET target, patches from Anton Danilov.

3) Add the hash:mac set type to ipset, from Jozsef Kadlecsick.

4) Add simple weighted fail-over scheduler via Simon Horman. This provides
   a fail-over IPVS scheduler (unlike existing load balancing schedulers).
   Connections are directed to the appropriate server based solely on
   highest weight value and server availability, patch from Kenny Mathis.

5) Support IPv6 real servers in IPv4 virtual-services and vice versa.
   Simon Horman informs that the motivation for this is to allow more
   flexibility in the choice of IP version offered by both virtual-servers
   and real-servers as they no longer need to match: An IPv4 connection
   from an end-user may be forwarded to a real-server using IPv6 and
   vice versa. No ip_vs_sync support yet though. Patches from Alex Gartrell
   and Julian Anastasov.

6) Add global generation ID to the nf_tables ruleset. When dumping from
   several different object lists, we need a way to identify that an update
   has ocurred so userspace knows that it needs to refresh its lists. This
   also includes a new command to obtain the 32-bits generation ID. The
   less significant 16-bits of this ID is also exposed through res_id field
   in the nfnetlink header to quickly detect the interference and retry when
   there is no risk of ID wraparound.

7) Move br_netfilter out of the bridge core. The br_netfilter code is
   built in the bridge core by default. This causes problems of different
   kind to people that don't want this: Jesper reported performance drop due
   to the inconditional hook registration and I remember to have read complains
   on netdev from people regarding the unexpected behaviour of our bridging
   stack when br_netfilter is enabled (fragmentation handling, layer 3 and
   upper inspection). People that still need this should easily undo the
   damage by modprobing the new br_netfilter module.

8) Dump the set policy nf_tables that allows set parameterization. So
   userspace can keep user-defined preferences when saving the ruleset.
   From Arturo Borrero.

9) Use __seq_open_private() helper function to reduce boiler plate code
   in x_tables, From Rob Jones.

10) Safer default behaviour in case that you forget to load the protocol
   tracker. Daniel Borkmann and Florian Westphal detected that if your
   ruleset is stateful, you allow traffic to at least one single SCTP port
   and the SCTP protocol tracker is not loaded, then any SCTP traffic may
   be pass through unfiltered. After this patch, the connection tracking
   classifies SCTP/DCCP/UDPlite/GRE packets as invalid if your kernel has
   been compiled with support for these modules.
====================

Trivially resolved conflict in include/linux/skbuff.h, Eric moved some
netfilter skbuff members around, and the netfilter tree adjusted the
ifdef guards for the bridging info pointer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29 14:46:53 -04:00
Will Deacon
f5c9ecebaf vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type
VFIO allows devices to be safely handed off to userspace by putting
them behind an IOMMU configured to ensure DMA and interrupt isolation.
This enables userspace KVM clients, such as kvmtool and qemu, to further
map the device into a virtual machine.

With IOMMUs such as the ARM SMMU, it is then possible to provide SMMU
translation services to the guest operating system, which are nested
with the existing translation installed by VFIO. However, enabling this
feature means that the IOMMU driver must be informed that the VFIO domain
is being created for the purposes of nested translation.

This patch adds a new IOMMU type (VFIO_TYPE1_NESTING_IOMMU) to the VFIO
type-1 driver. The new IOMMU type acts identically to the
VFIO_TYPE1v2_IOMMU type, but additionally sets the DOMAIN_ATTR_NESTING
attribute on its IOMMU domains.

Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2014-09-29 10:06:19 -06:00
Daniel Borkmann
e3118e8359 net: tcp: add DCTCP congestion control algorithm
This work adds the DataCenter TCP (DCTCP) congestion control
algorithm [1], which has been first published at SIGCOMM 2010 [2],
resp. follow-up analysis at SIGMETRICS 2011 [3] (and also, more
recently as an informational IETF draft available at [4]).

DCTCP is an enhancement to the TCP congestion control algorithm for
data center networks. Typical data center workloads are i.e.
i) partition/aggregate (queries; bursty, delay sensitive), ii) short
messages e.g. 50KB-1MB (for coordination and control state; delay
sensitive), and iii) large flows e.g. 1MB-100MB (data update;
throughput sensitive). DCTCP has therefore been designed for such
environments to provide/achieve the following three requirements:

  * High burst tolerance (incast due to partition/aggregate)
  * Low latency (short flows, queries)
  * High throughput (continuous data updates, large file
    transfers) with commodity, shallow buffered switches

The basic idea of its design consists of two fundamentals: i) on the
switch side, packets are being marked when its internal queue
length > threshold K (K is chosen so that a large enough headroom
for marked traffic is still available in the switch queue); ii) the
sender/host side maintains a moving average of the fraction of marked
packets, so each RTT, F is being updated as follows:

 F := X / Y, where X is # of marked ACKs, Y is total # of ACKs
 alpha := (1 - g) * alpha + g * F, where g is a smoothing constant

The resulting alpha (iow: probability that switch queue is congested)
is then being used in order to adaptively decrease the congestion
window W:

 W := (1 - (alpha / 2)) * W

The means for receiving marked packets resp. marking them on switch
side in DCTCP is the use of ECN.

RFC3168 describes a mechanism for using Explicit Congestion Notification
from the switch for early detection of congestion, rather than waiting
for segment loss to occur.

However, this method only detects the presence of congestion, not
the *extent*. In the presence of mild congestion, it reduces the TCP
congestion window too aggressively and unnecessarily affects the
throughput of long flows [4].

DCTCP, as mentioned, enhances Explicit Congestion Notification (ECN)
processing to estimate the fraction of bytes that encounter congestion,
rather than simply detecting that some congestion has occurred. DCTCP
then scales the TCP congestion window based on this estimate [4],
thus it can derive multibit feedback from the information present in
the single-bit sequence of marks in its control law. And thus act in
*proportion* to the extent of congestion, not its *presence*.

Switches therefore set the Congestion Experienced (CE) codepoint in
packets when internal queue lengths exceed threshold K. Resulting,
DCTCP delivers the same or better throughput than normal TCP, while
using 90% less buffer space.

It was found in [2] that DCTCP enables the applications to handle 10x
the current background traffic, without impacting foreground traffic.
Moreover, a 10x increase in foreground traffic did not cause any
timeouts, and thus largely eliminates TCP incast collapse problems.

The algorithm itself has already seen deployments in large production
data centers since then.

We did a long-term stress-test and analysis in a data center, short
summary of our TCP incast tests with iperf compared to cubic:

This test measured DCTCP throughput and latency and compared it with
CUBIC throughput and latency for an incast scenario. In this test, 19
senders sent at maximum rate to a single receiver. The receiver simply
ran iperf -s.

The senders ran iperf -c <receiver> -t 30. All senders started
simultaneously (using local clocks synchronized by ntp).

This test was repeated multiple times. Below shows the results from a
single test. Other tests are similar. (DCTCP results were extremely
consistent, CUBIC results show some variance induced by the TCP timeouts
that CUBIC encountered.)

For this test, we report statistics on the number of TCP timeouts,
flow throughput, and traffic latency.

1) Timeouts (total over all flows, and per flow summaries):

            CUBIC            DCTCP
  Total     3227             25
  Mean       169.842          1.316
  Median     183              1
  Max        207              5
  Min        123              0
  Stddev      28.991          1.600

Timeout data is taken by measuring the net change in netstat -s
"other TCP timeouts" reported. As a result, the timeout measurements
above are not restricted to the test traffic, and we believe that it
is likely that all of the "DCTCP timeouts" are actually timeouts for
non-test traffic. We report them nevertheless. CUBIC will also include
some non-test timeouts, but they are drawfed by bona fide test traffic
timeouts for CUBIC. Clearly DCTCP does an excellent job of preventing
TCP timeouts. DCTCP reduces timeouts by at least two orders of
magnitude and may well have eliminated them in this scenario.

2) Throughput (per flow in Mbps):

            CUBIC            DCTCP
  Mean      521.684          521.895
  Median    464              523
  Max       776              527
  Min       403              519
  Stddev    105.891            2.601
  Fairness    0.962            0.999

Throughput data was simply the average throughput for each flow
reported by iperf. By avoiding TCP timeouts, DCTCP is able to
achieve much better per-flow results. In CUBIC, many flows
experience TCP timeouts which makes flow throughput unpredictable and
unfair. DCTCP, on the other hand, provides very clean predictable
throughput without incurring TCP timeouts. Thus, the standard deviation
of CUBIC throughput is dramatically higher than the standard deviation
of DCTCP throughput.

Mean throughput is nearly identical because even though cubic flows
suffer TCP timeouts, other flows will step in and fill the unused
bandwidth. Note that this test is something of a best case scenario
for incast under CUBIC: it allows other flows to fill in for flows
experiencing a timeout. Under situations where the receiver is issuing
requests and then waiting for all flows to complete, flows cannot fill
in for timed out flows and throughput will drop dramatically.

3) Latency (in ms):

            CUBIC            DCTCP
  Mean      4.0088           0.04219
  Median    4.055            0.0395
  Max       4.2              0.085
  Min       3.32             0.028
  Stddev    0.1666           0.01064

Latency for each protocol was computed by running "ping -i 0.2
<receiver>" from a single sender to the receiver during the incast
test. For DCTCP, "ping -Q 0x6 -i 0.2 <receiver>" was used to ensure
that traffic traversed the DCTCP queue and was not dropped when the
queue size was greater than the marking threshold. The summary
statistics above are over all ping metrics measured between the single
sender, receiver pair.

The latency results for this test show a dramatic difference between
CUBIC and DCTCP. CUBIC intentionally overflows the switch buffer
which incurs the maximum queue latency (more buffer memory will lead
to high latency.) DCTCP, on the other hand, deliberately attempts to
keep queue occupancy low. The result is a two orders of magnitude
reduction of latency with DCTCP - even with a switch with relatively
little RAM. Switches with larger amounts of RAM will incur increasing
amounts of latency for CUBIC, but not for DCTCP.

4) Convergence and stability test:

This test measured the time that DCTCP took to fairly redistribute
bandwidth when a new flow commences. It also measured DCTCP's ability
to remain stable at a fair bandwidth distribution. DCTCP is compared
with CUBIC for this test.

At the commencement of this test, a single flow is sending at maximum
rate (near 10 Gbps) to a single receiver. One second after that first
flow commences, a new flow from a distinct server begins sending to
the same receiver as the first flow. After the second flow has sent
data for 10 seconds, the second flow is terminated. The first flow
sends for an additional second. Ideally, the bandwidth would be evenly
shared as soon as the second flow starts, and recover as soon as it
stops.

The results of this test are shown below. Note that the flow bandwidth
for the two flows was measured near the same time, but not
simultaneously.

DCTCP performs nearly perfectly within the measurement limitations
of this test: bandwidth is quickly distributed fairly between the two
flows, remains stable throughout the duration of the test, and
recovers quickly. CUBIC, in contrast, is slow to divide the bandwidth
fairly, and has trouble remaining stable.

  CUBIC                      DCTCP

  Seconds  Flow 1  Flow 2    Seconds  Flow 1  Flow 2
   0       9.93    0          0       9.92    0
   0.5     9.87    0          0.5     9.86    0
   1       8.73    2.25       1       6.46    4.88
   1.5     7.29    2.8        1.5     4.9     4.99
   2       6.96    3.1        2       4.92    4.94
   2.5     6.67    3.34       2.5     4.93    5
   3       6.39    3.57       3       4.92    4.99
   3.5     6.24    3.75       3.5     4.94    4.74
   4       6       3.94       4       5.34    4.71
   4.5     5.88    4.09       4.5     4.99    4.97
   5       5.27    4.98       5       4.83    5.01
   5.5     4.93    5.04       5.5     4.89    4.99
   6       4.9     4.99       6       4.92    5.04
   6.5     4.93    5.1        6.5     4.91    4.97
   7       4.28    5.8        7       4.97    4.97
   7.5     4.62    4.91       7.5     4.99    4.82
   8       5.05    4.45       8       5.16    4.76
   8.5     5.93    4.09       8.5     4.94    4.98
   9       5.73    4.2        9       4.92    5.02
   9.5     5.62    4.32       9.5     4.87    5.03
  10       6.12    3.2       10       4.91    5.01
  10.5     6.91    3.11      10.5     4.87    5.04
  11       8.48    0         11       8.49    4.94
  11.5     9.87    0         11.5     9.9     0

SYN/ACK ECT test:

This test demonstrates the importance of ECT on SYN and SYN-ACK packets
by measuring the connection probability in the presence of competing
flows for a DCTCP connection attempt *without* ECT in the SYN packet.
The test was repeated five times for each number of competing flows.

              Competing Flows  1 |    2 |    4 |    8 |   16
                               ------------------------------
Mean Connection Probability    1 | 0.67 | 0.45 | 0.28 |    0
Median Connection Probability  1 | 0.65 | 0.45 | 0.25 |    0

As the number of competing flows moves beyond 1, the connection
probability drops rapidly.

Enabling DCTCP with this patch requires the following steps:

DCTCP must be running both on the sender and receiver side in your
data center, i.e.:

  sysctl -w net.ipv4.tcp_congestion_control=dctcp

Also, ECN functionality must be enabled on all switches in your
data center for DCTCP to work. The default ECN marking threshold (K)
heuristic on the switch for DCTCP is e.g., 20 packets (30KB) at
1Gbps, and 65 packets (~100KB) at 10Gbps (K > 1/7 * C * RTT, [4]).

In above tests, for each switch port, traffic was segregated into two
queues. For any packet with a DSCP of 0x01 - or equivalently a TOS of
0x04 - the packet was placed into the DCTCP queue. All other packets
were placed into the default drop-tail queue. For the DCTCP queue,
RED/ECN marking was enabled, here, with a marking threshold of 75 KB.
More details however, we refer you to the paper [2] under section 3).

There are no code changes required to applications running in user
space. DCTCP has been implemented in full *isolation* of the rest of
the TCP code as its own congestion control module, so that it can run
without a need to expose code to the core of the TCP stack, and thus
nothing changes for non-DCTCP users.

Changes in the CA framework code are minimal, and DCTCP algorithm
operates on mechanisms that are already available in most Silicon.
The gain (dctcp_shift_g) is currently a fixed constant (1/16) from
the paper, but we leave the option that it can be chosen carefully
to a different value by the user.

In case DCTCP is being used and ECN support on peer site is off,
DCTCP falls back after 3WHS to operate in normal TCP Reno mode.

ss {-4,-6} -t -i diag interface:

  ... dctcp wscale:7,7 rto:203 rtt:2.349/0.026 mss:1448 cwnd:2054
  ssthresh:1102 ce_state 0 alpha 15 ab_ecn 0 ab_tot 735584
  send 10129.2Mbps pacing_rate 20254.1Mbps unacked:1822 retrans:0/15
  reordering:101 rcv_space:29200

  ... dctcp-reno wscale:7,7 rto:201 rtt:0.711/1.327 ato:40 mss:1448
  cwnd:10 ssthresh:1102 fallback_mode send 162.9Mbps pacing_rate
  325.5Mbps rcv_rtt:1.5 rcv_space:29200

More information about DCTCP can be found in [1-4].

  [1] http://simula.stanford.edu/~alizade/Site/DCTCP.html
  [2] http://simula.stanford.edu/~alizade/Site/DCTCP_files/dctcp-final.pdf
  [3] http://simula.stanford.edu/~alizade/Site/DCTCP_files/dctcp_analysis-full.pdf
  [4] http://tools.ietf.org/html/draft-bensley-tcpm-dctcp-00

Joint work with Florian Westphal and Glenn Judd.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Glenn Judd <glenn.judd@morganstanley.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29 00:13:10 -04:00
David S. Miller
f5c7e1a47a Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2014-09-25

1) Remove useless hash_resize_mutex in xfrm_hash_resize().
   This mutex is used only there, but xfrm_hash_resize()
   can't be called concurrently at all. From Ying Xue.

2) Extend policy hashing to prefixed policies based on
   prefix lenght thresholds. From Christophe Gouault.

3) Make the policy hash table thresholds configurable
   via netlink. From Christophe Gouault.

4) Remove the maximum authentication length for AH.
   This was needed to limit stack usage. We switched
   already to allocate space, so no need to keep the
   limit. From Herbert Xu.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-28 17:19:15 -04:00
David S. Miller
57219dc7bf Merge tag 'master-2014-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:

====================
pull request: wireless-next 2014-09-22

Please pull this batch of updates intended for the 3.18 stream...

For the mac80211 bits, Johannes says:

"This time, I have some rate minstrel improvements, support for a very
small feature from CCX that Steinar reverse-engineered, dynamic ACK
timeout support, a number of changes for TDLS, early support for radio
resource measurement and many fixes. Also, I'm changing a number of
places to clear key memory when it's freed and Intel claims copyright
for code they developed."

For the bluetooth bits, Johan says:

"Here are some more patches intended for 3.18. Most of them are cleanups
or fixes for SMP. The only exception is a fix for BR/EDR L2CAP fixed
channels which should now work better together with the L2CAP
information request procedure."

For the iwlwifi bits, Emmanuel says:

"I fix here dvm which was broken by my last pull request. Arik
continues to work on TDLS and Luca solved a few issues in CT-Kill. Eyal
keeps digging into rate scaling code, more to come soon. Besides this,
nothing really special here."

Beyond that, there are the usual big batches of updates to ath9k, b43,
mwifiex, and wil6210 as well as a handful of other bits here and there.
Also, rtlwifi gets some btcoexist attention from Larry.

Please let me know if there are problems!
====================

Had to adjust the wil6210 code to comply with Joe Perches's recent
change in net-next to make the netdev_*() routines return void instead
of 'int'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 15:39:24 -04:00
Alexei Starovoitov
cbd3570086 bpf: verifier (add ability to receive verification log)
add optional attributes for BPF_PROG_LOAD syscall:
union bpf_attr {
    struct {
	...
	__u32         log_level; /* verbosity level of eBPF verifier */
	__u32         log_size;  /* size of user buffer */
	__aligned_u64 log_buf;   /* user supplied 'char *buffer' */
    };
};

when log_level > 0 the verifier will return its verification log in the user
supplied buffer 'log_buf' which can be used by program author to analyze why
verifier rejected given program.

'Understanding eBPF verifier messages' section of Documentation/networking/filter.txt
provides several examples of these messages, like the program:

  BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
  BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
  BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
  BPF_LD_MAP_FD(BPF_REG_1, 0),
  BPF_CALL_FUNC(BPF_FUNC_map_lookup_elem),
  BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
  BPF_ST_MEM(BPF_DW, BPF_REG_0, 4, 0),
  BPF_EXIT_INSN(),

will be rejected with the following multi-line message in log_buf:

  0: (7a) *(u64 *)(r10 -8) = 0
  1: (bf) r2 = r10
  2: (07) r2 += -8
  3: (b7) r1 = 0
  4: (85) call 1
  5: (15) if r0 == 0x0 goto pc+1
   R0=map_ptr R10=fp
  6: (7a) *(u64 *)(r0 +4) = 0
  misaligned access off 4 size 8

The format of the output can change at any time as verifier evolves.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 15:05:15 -04:00