Commit Graph

5831 Commits

Author SHA1 Message Date
Linus Torvalds
06dd3dfeea Char/Misc patches for 4.17-rc1
Here is the big set of char/misc driver patches for 4.17-rc1.
 
 There are a lot of little things in here, nothing huge, but all
 important to the different hardware types involved:
 	- thunderbolt driver updates
 	- parport updates (people still care...)
 	- nvmem driver updates
 	- mei updates (as always)
 	- hwtracing driver updates
 	- hyperv driver updates
 	- extcon driver updates
 	- and a handfull of even smaller driver subsystem and individual
 	  driver updates
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsShSQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ykNqwCfUbfvopswb1PesHCLABDBsFQChgoAniDa6pS9
 kI8TN5MdLN85UU27Mkb6
 =BzFR
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc updates from Greg KH:
 "Here is the big set of char/misc driver patches for 4.17-rc1.

  There are a lot of little things in here, nothing huge, but all
  important to the different hardware types involved:

   -  thunderbolt driver updates

   -  parport updates (people still care...)

   -  nvmem driver updates

   -  mei updates (as always)

   -  hwtracing driver updates

   -  hyperv driver updates

   -  extcon driver updates

   -  ... and a handful of even smaller driver subsystem and individual
      driver updates

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

* tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (149 commits)
  hwtracing: Add HW tracing support menu
  intel_th: Add ACPI glue layer
  intel_th: Allow forcing host mode through drvdata
  intel_th: Pick up irq number from resources
  intel_th: Don't touch switch routing in host mode
  intel_th: Use correct method of finding hub
  intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
  stm class: Make dummy's master/channel ranges configurable
  stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
  MAINTAINERS: Bestow upon myself the care for drivers/hwtracing
  hv: add SPDX license id to Kconfig
  hv: add SPDX license to trace
  Drivers: hv: vmbus: do not mark HV_PCIE as perf_device
  Drivers: hv: vmbus: respect what we get from hv_get_synint_state()
  /dev/mem: Avoid overwriting "err" in read_mem()
  eeprom: at24: use SPDX identifier instead of GPL boiler-plate
  eeprom: at24: simplify the i2c functionality checking
  eeprom: at24: fix a line break
  eeprom: at24: tweak newlines
  eeprom: at24: refactor at24_probe()
  ...
2018-04-04 20:07:20 -07:00
Linus Torvalds
df34df483a Staging/IIO patches for 4.17-rc1
Here is the big set of Staging/IIO driver patches for 4.17-rc1.
 
 It is a lot, over 500 changes, but not huge by previous kernel release
 standards.  We deleted more lines than we added again (27k added vs. 91k
 remvoed), thanks to finally being able to delete the IRDA drivers and
 networking code.
 
 We also deleted the ccree crypto driver, but that's coming back in
 through the crypto tree to you, in a much cleaned-up form.
 
 Added this round is at lot of "mt7621" device support, which is for an
 embedded device that Neil Brown cares about, and of course a handful of
 new IIO drivers as well.
 
 And finally, the fsl-mc core code moved out of the staging tree to the
 "real" part of the kernel, which is nice to see happen as well.
 
 Full details are in the shortlog, which has all of the tiny cleanup
 patches described.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSnAA8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+yn60ACgxKvU/5XBP14hBkBpAcD0Q43OHe0AniEti65M
 Kw03GWK3NNM3pzk49BjZ
 =sj3K
 -----END PGP SIGNATURE-----

Merge tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big set of Staging/IIO driver patches for 4.17-rc1.

  It is a lot, over 500 changes, but not huge by previous kernel release
  standards. We deleted more lines than we added again (27k added vs.
  91k remvoed), thanks to finally being able to delete the IRDA drivers
  and networking code.

  We also deleted the ccree crypto driver, but that's coming back in
  through the crypto tree to you, in a much cleaned-up form.

  Added this round is at lot of "mt7621" device support, which is for an
  embedded device that Neil Brown cares about, and of course a handful
  of new IIO drivers as well.

  And finally, the fsl-mc core code moved out of the staging tree to the
  "real" part of the kernel, which is nice to see happen as well.

  Full details are in the shortlog, which has all of the tiny cleanup
  patches described.

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

* tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (579 commits)
  staging: rtl8723bs: Remove yield call, replace with cond_resched()
  staging: rtl8723bs: Replace yield() call with cond_resched()
  staging: rtl8723bs: Remove unecessary newlines from 'odm.h'.
  staging: rtl8723bs: Rework 'struct _ODM_Phy_Status_Info_' coding style.
  staging: rtl8723bs: Rework 'struct _ODM_Per_Pkt_Info_' coding style.
  staging: rtl8723bs: Replace NULL pointer comparison with '!'.
  staging: rtl8723bs: Factor out rtl8723bs_recv_tasklet() sections.
  staging: rtl8723bs: Fix function signature that goes over 80 characters.
  staging: rtl8723bs: Fix lines too long in update_recvframe_attrib().
  staging: rtl8723bs: Remove unnecessary blank lines in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Change camel case to snake case in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Add missing braces in else statement.
  staging: rtl8723bs: Add spaces around ternary operators.
  staging: rtl8723bs: Fix lines with trailing open parentheses.
  staging: rtl8723bs: Remove unnecessary length #define's.
  staging: rtl8723bs: Fix IEEE80211 authentication algorithm constants.
  staging: rtl8723bs: Fix alignment in rtw_wx_set_auth().
  staging: rtl8723bs: Remove braces from single statement conditionals.
  staging: rtl8723bs: Remove unecessary braces from switch statement.
  staging: rtl8723bs: Fix newlines in rtw_wx_set_auth().
  ...
2018-04-04 18:56:27 -07:00
Linus Torvalds
9abf8acea2 TTY/Serial driver patches for 4.17-rc1
Here is the big set of tty and serial driver patches for 4.17-rc1
 
 Not all that big really, most are just small fixes and additions to
 existing drivers.  There's a bunch of work on the imx serial driver
 recently for some reason, and a new embedded serial driver added as
 well.
 
 Full details are in the shortlog.
 
 All of these have been in the linux-next tree for a while with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSn+w8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ynb6wCdEf5dAUrSB37ptZY78n4kc6nI6NAAniDO+rjL
 ppZZp7QTIB/bnPfW8cOH
 =+tfY
 -----END PGP SIGNATURE-----

Merge tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big set of tty and serial driver patches for 4.17-rc1

  Not all that big really, most are just small fixes and additions to
  existing drivers. There's a bunch of work on the imx serial driver
  recently for some reason, and a new embedded serial driver added as
  well.

  Full details are in the shortlog.

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

* tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (66 commits)
  serial: expose buf_overrun count through proc interface
  serial: mvebu-uart: fix tx lost characters
  tty: serial: msm_geni_serial: Fix return value check in qcom_geni_serial_probe()
  tty: serial: msm_geni_serial: Add serial driver support for GENI based QUP
  8250-men-mcb: add support for 16z025 and 16z057
  powerpc: Mark the variable earlycon_acpi_spcr_enable maybe_unused
  serial: stm32: fix initialization of RS485 mode
  ARM: dts: STi: Remove "console=ttyASN" from bootargs for STi boards
  vt: change SGR 21 to follow the standards
  serdev: Fix typo in serdev_device_alloc
  ARM: dts: STi: Fix aliases property name for STi boards
  tty: st-asc: Update tty alias
  serial: stm32: add support for RS485 hardware control mode
  dt-bindings: serial: stm32: add RS485 optional properties
  selftests: add devpts selftests
  devpts: comment devpts_mntget()
  devpts: resolve devpts bind-mounts
  devpts: hoist out check for DEVPTS_SUPER_MAGIC
  serial: 8250: Add Nuvoton NPCM UART
  serial: mxs-auart: disable clks of Alphascale ASM9260
  ...
2018-04-04 18:43:49 -07:00
Linus Torvalds
23221d997b arm64 updates for 4.17
Nothing particularly stands out here, probably because people were tied
 up with spectre/meltdown stuff last time around. Still, the main pieces
 are:
 
 - Rework of our CPU features framework so that we can whitelist CPUs that
   don't require kpti even in a heterogeneous system
 
 - Support for the IDC/DIC architecture extensions, which allow us to elide
   instruction and data cache maintenance when writing out instructions
 
 - Removal of the large memory model which resulted in suboptimal codegen
   by the compiler and increased the use of literal pools, which could
   potentially be used as ROP gadgets since they are mapped as executable
 
 - Rework of forced signal delivery so that the siginfo_t is well-formed
   and handling of show_unhandled_signals is consolidated and made
   consistent between different fault types
 
 - More siginfo cleanup based on the initial patches from Eric Biederman
 
 - Workaround for Cortex-A55 erratum #1024718
 
 - Some small ACPI IORT updates and cleanups from Lorenzo Pieralisi
 
 - Misc cleanups and non-critical fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABCgAGBQJaw1TCAAoJELescNyEwWM0gyQIAJVMK4QveBW+LwF96NYdZo16
 p90Aa+nqKelh/s93govQArDMv1gxyuXdFlQZVOGPQHfqpz6RhJWmBA2tFsUbQrUc
 OBcioPrRihqTmKBe+1r1XORwZxkVX6GGmCn0LYpPR7I3TjxXZpvxqaxGxiUvHkci
 yVxWlDTyN/7eL3akhCpCDagN3Fxwk3QnJLqE3fxOFMlY7NvQcmUxcITiUl/s469q
 xK6SWH9SRH1JK8jTHPitwUBiU//3FfCqSI9HLEdDIDoTuPcVM8UetWvi4QzrzJL1
 UYg8lmU0CXNmflDzZJDaMf+qFApOrGxR0YVPpBzlQvxe0JIY69g48f+JzDPz8nc=
 =+gNa
 -----END PGP SIGNATURE-----

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "Nothing particularly stands out here, probably because people were
  tied up with spectre/meltdown stuff last time around. Still, the main
  pieces are:

   - Rework of our CPU features framework so that we can whitelist CPUs
     that don't require kpti even in a heterogeneous system

   - Support for the IDC/DIC architecture extensions, which allow us to
     elide instruction and data cache maintenance when writing out
     instructions

   - Removal of the large memory model which resulted in suboptimal
     codegen by the compiler and increased the use of literal pools,
     which could potentially be used as ROP gadgets since they are
     mapped as executable

   - Rework of forced signal delivery so that the siginfo_t is
     well-formed and handling of show_unhandled_signals is consolidated
     and made consistent between different fault types

   - More siginfo cleanup based on the initial patches from Eric
     Biederman

   - Workaround for Cortex-A55 erratum #1024718

   - Some small ACPI IORT updates and cleanups from Lorenzo Pieralisi

   - Misc cleanups and non-critical fixes"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits)
  arm64: uaccess: Fix omissions from usercopy whitelist
  arm64: fpsimd: Split cpu field out from struct fpsimd_state
  arm64: tlbflush: avoid writing RES0 bits
  arm64: cmpxchg: Include linux/compiler.h in asm/cmpxchg.h
  arm64: move percpu cmpxchg implementation from cmpxchg.h to percpu.h
  arm64: cmpxchg: Include build_bug.h instead of bug.h for BUILD_BUG
  arm64: lse: Include compiler_types.h and export.h for out-of-line LL/SC
  arm64: fpsimd: include <linux/init.h> in fpsimd.h
  drivers/perf: arm_pmu_platform: do not warn about affinity on uniprocessor
  perf: arm_spe: include linux/vmalloc.h for vmap()
  Revert "arm64: Revert L1_CACHE_SHIFT back to 6 (64-byte cache line size)"
  arm64: cpufeature: Avoid warnings due to unused symbols
  arm64: Add work around for Arm Cortex-A55 Erratum 1024718
  arm64: Delay enabling hardware DBM feature
  arm64: Add MIDR encoding for Arm Cortex-A55 and Cortex-A35
  arm64: capabilities: Handle shared entries
  arm64: capabilities: Add support for checks based on a list of MIDRs
  arm64: Add helpers for checking CPU MIDR against a range
  arm64: capabilities: Clean up midr range helpers
  arm64: capabilities: Change scope of VHE to Boot CPU feature
  ...
2018-04-04 16:01:43 -07:00
Linus Torvalds
680014d6d1 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull time(r) updates from Thomas Gleixner:
 "A small set of updates for timers and timekeeping:

   - The most interesting change is the consolidation of clock MONOTONIC
     and clock BOOTTIME.

     Clock MONOTONIC behaves now exactly like clock BOOTTIME and does
     not longer ignore the time spent in suspend. A new clock
     MONOTONIC_ACTIVE is provived which behaves like clock MONOTONIC in
     kernels before this change. This allows applications to
     programmatically check for the clock MONOTONIC behaviour.

     As discussed in the review thread, this has the potential of
     breaking user space and we might have to revert this. Knock on wood
     that we can avoid that exercise.

   - Updates to the NTP mechanism to improve accuracy

   - A new kernel internal data structure to aid the ongoing Y2038 work.

   - Cleanups and simplifications of the clocksource code.

   - Make the alarmtimer code play nicely with debugobjects"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Init nanosleep alarm timer on stack
  y2038: Introduce struct __kernel_old_timeval
  tracing: Unify the "boot" and "mono" tracing clocks
  hrtimer: Unify MONOTONIC and BOOTTIME clock behavior
  posix-timers: Unify MONOTONIC and BOOTTIME clock behavior
  timekeeping: Remove boot time specific code
  Input: Evdev - unify MONOTONIC and BOOTTIME clock behavior
  timekeeping: Make the MONOTONIC clock behave like the BOOTTIME clock
  timekeeping: Add the new CLOCK_MONOTONIC_ACTIVE clock
  timekeeping/ntp: Determine the multiplier directly from NTP tick length
  timekeeping/ntp: Don't align NTP frequency adjustments to ticks
  clocksource: Use ATTRIBUTE_GROUPS
  clocksource: Use DEVICE_ATTR_RW/RO/WO to define device attributes
  clocksource: Don't walk the clocksource list for empty override
2018-04-04 14:50:29 -07:00
Linus Torvalds
ef1c4a6fa9 media updates for v4.17-rc1
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJaw1yeAAoJEAhfPr2O5OEVDDgQAIYpin6obedJOm7zIm741Q0S
 fS2FL2pygyvHlVtU20ERHgvM6aD5tujekpDM4+GNgnq0aAabxvqBvdohmHQjyVSw
 FgszgY6kQSnI8S4Oy9RB8H/MFRq7Wz9Qf+KmJh0SfuUoMzBe2A40yLjYQ+sAMJr9
 mm0ijxxRpFYikVtIBgKDbjnx6wdkOs12M7YlJuI8N/tMBHMt+p2EfvqcX6GF725i
 sgLGcMsTJr1sUSyY8vnM2pAlKfZL2tZqigx5f9sB4UM7uHSw/oL/a/8I+t6Mju1X
 J1BD3L7UtTpwqO9sAR5BsJQ+0pAkXNOF+eLGs2p9rx4sO0DOLKoUptMI+YryvE86
 /SOlTskSSAeX/rBFyZJw1zv0/9mdGrHoyCy0q/lfDkD/mQkrUJDDZ7GPLqZ9rLUe
 2cXn1xMWB/soeR70oTyew0D2SZkp6y4DQr0Rwje7V8/SOWMmJvhaVIWhVIP9ZrS6
 AvCS7WUYTTVIX+td2glnLkJ5SaXXJyRYv8Utp/TUrYvCFOX7wsk7F0pRY4PE4PeZ
 BL7Bl8H9l3HGWWhdqPvw+ETdJgcbq/IwVUcpuuEPjkhDZEqHz//vzwoPt1nT4v6M
 gfqfaW5LaYuj0MYYqyxZMDwP3FWk4SsQ0NZzmaFs+yfE17bcWUMuf3ZVJtjmLxzk
 RUo0E/7RZsrw7LkCy0KF
 =bzhS
 -----END PGP SIGNATURE-----

Merge tag 'media/v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new CEC pin injection code for testing purposes

 - DVB frontend cxd2099 promoted from staging

 - new platform driver for Sony cxd2880 DVB devices

 - new sensor drivers: mt9t112, ov2685, ov5695, ov772x, tda1997x,
   tw9910.c

 - removal of unused cx18 and ivtv alsa mixers

 - the reneseas-ceu driver doesn't depend on soc_camera anymore and
   moved from staging

 - removed the mantis_vp3028 driver, unused since 2009

 - s5p-mfc: add support for version 10 of the MSP

 - added a decoder for imon protocol

 - atomisp: lots of cleanups

 - imx074 and mt9t031: don't depend on soc_camera anymore, being
   promoted from staging

 - added helper functions to better support DVB I2C binding

 - lots of driver improvements and cleanups

* tag 'media/v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (438 commits)
  media: v4l2-ioctl: rename a temp var that stores _IOC_SIZE(cmd)
  media: fimc-capture: get rid of two warnings
  media: dvb-usb-v2: fix a missing dependency of I2C_MUX
  media: uvc: to the right check at uvc_ioctl_enum_framesizes()
  media: cec-core: fix a bug at cec_error_inj_write()
  media: tda9840: cleanup a warning
  media: tm6000:  avoid casting just to print pointer address
  media: em28xx-input: improve error handling code
  media: zr364xx: avoid casting just to print pointer address
  media: vivid-radio-rx: add a cast to avoid a warning
  media: saa7134-alsa: don't use casts to print a buffer address
  media: solo6x10: get rid of an address space warning
  media: zoran: don't cast pointers to print them
  media: ir-kbd-i2c: change the if logic to avoid a warning
  media: ir-kbd-i2c: improve error handling code
  media: saa7134-input: improve error handling
  media: s2255drv: fix a casting warning
  media: ivtvfb: Cleanup some warnings
  media: videobuf-dma-sg: Fix a weird cast
  soc_camera: fix a weird cast on printk
  ...
2018-04-03 17:16:59 -07:00
Linus Torvalds
4608f06453 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next
Pull sparc updates from David Miller:

 1) Add support for ADI (Application Data Integrity) found in more
    recent sparc64 cpus. Essentially this is keyed based access to
    virtual memory, and if the key encoded in the virual address is
    wrong you get a trap.

    The mm changes were reviewed by Andrew Morton and others.

    Work by Khalid Aziz.

 2) Validate DAX completion index range properly, from Rob Gardner.

 3) Add proper Kconfig deps for DAX driver. From Guenter Roeck.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
  sparc64: Make atomic_xchg() an inline function rather than a macro.
  sparc64: Properly range check DAX completion index
  sparc: Make auxiliary vectors for ADI available on 32-bit as well
  sparc64: Oracle DAX driver depends on SPARC64
  sparc64: Update signal delivery to use new helper functions
  sparc64: Add support for ADI (Application Data Integrity)
  mm: Allow arch code to override copy_highpage()
  mm: Clear arch specific VM flags on protection change
  mm: Add address parameter to arch_validate_prot()
  sparc64: Add auxiliary vectors to report platform ADI properties
  sparc64: Add handler for "Memory Corruption Detected" trap
  sparc64: Add HV fault type handlers for ADI related faults
  sparc64: Add support for ADI register fields, ASIs and traps
  mm, swap: Add infrastructure for saving page metadata on swap
  signals, sparc: Add signal codes for ADI violations
2018-04-03 14:08:58 -07:00
Linus Torvalds
5bb053bef8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) Support offloading wireless authentication to userspace via
    NL80211_CMD_EXTERNAL_AUTH, from Srinivas Dasari.

 2) A lot of work on network namespace setup/teardown from Kirill Tkhai.
    Setup and cleanup of namespaces now all run asynchronously and thus
    performance is significantly increased.

 3) Add rx/tx timestamping support to mv88e6xxx driver, from Brandon
    Streiff.

 4) Support zerocopy on RDS sockets, from Sowmini Varadhan.

 5) Use denser instruction encoding in x86 eBPF JIT, from Daniel
    Borkmann.

 6) Support hw offload of vlan filtering in mvpp2 dreiver, from Maxime
    Chevallier.

 7) Support grafting of child qdiscs in mlxsw driver, from Nogah
    Frankel.

 8) Add packet forwarding tests to selftests, from Ido Schimmel.

 9) Deal with sub-optimal GSO packets better in BBR congestion control,
    from Eric Dumazet.

10) Support 5-tuple hashing in ipv6 multipath routing, from David Ahern.

11) Add path MTU tests to selftests, from Stefano Brivio.

12) Various bits of IPSEC offloading support for mlx5, from Aviad
    Yehezkel, Yossi Kuperman, and Saeed Mahameed.

13) Support RSS spreading on ntuple filters in SFC driver, from Edward
    Cree.

14) Lots of sockmap work from John Fastabend. Applications can use eBPF
    to filter sendmsg and sendpage operations.

15) In-kernel receive TLS support, from Dave Watson.

16) Add XDP support to ixgbevf, this is significant because it should
    allow optimized XDP usage in various cloud environments. From Tony
    Nguyen.

17) Add new Intel E800 series "ice" ethernet driver, from Anirudh
    Venkataramanan et al.

18) IP fragmentation match offload support in nfp driver, from Pieter
    Jansen van Vuuren.

19) Support XDP redirect in i40e driver, from Björn Töpel.

20) Add BPF_RAW_TRACEPOINT program type for accessing the arguments of
    tracepoints in their raw form, from Alexei Starovoitov.

21) Lots of striding RQ improvements to mlx5 driver with many
    performance improvements, from Tariq Toukan.

22) Use rhashtable for inet frag reassembly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1678 commits)
  net: mvneta: improve suspend/resume
  net: mvneta: split rxq/txq init and txq deinit into SW and HW parts
  ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh
  net: bgmac: Fix endian access in bgmac_dma_tx_ring_free()
  net: bgmac: Correctly annotate register space
  route: check sysctl_fib_multipath_use_neigh earlier than hash
  fix typo in command value in drivers/net/phy/mdio-bitbang.
  sky2: Increase D3 delay to sky2 stops working after suspend
  net/mlx5e: Set EQE based as default TX interrupt moderation mode
  ibmvnic: Disable irqs before exiting reset from closed state
  net: sched: do not emit messages while holding spinlock
  vlan: also check phy_driver ts_info for vlan's real device
  Bluetooth: Mark expected switch fall-throughs
  Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME
  Bluetooth: btrsi: remove unused including <linux/version.h>
  Bluetooth: hci_bcm: Remove DMI quirk for the MINIX Z83-4
  sh_eth: kill useless check in __sh_eth_get_regs()
  sh_eth: add sh_eth_cpu_data::no_xdfar flag
  ipv6: factorize sk_wmem_alloc updates done by __ip6_append_data()
  ipv4: factorize sk_wmem_alloc updates done by __ip_append_data()
  ...
2018-04-03 14:04:18 -07:00
Linus Torvalds
cc5ada7ca3 Mostly small changes, as usual.
This does add an IPMI BMC server-side driver, to allow a Linux
 system to act as an IPMI controller.  That's the biggest change,
 but it is just a new driver that is fairly narrow in use.
 
 The other largish change is removing ACPI SPMI probe support,
 which should have never really been there in the beginning.
 
 -corey
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJaw8XOAAoJEGHzjJCRm/+BeoQQAIBokkgHSAl6y8jlmmTmu9fV
 gXl0GT97yAMyuTUaTvkWLdWm8GWCrSSUTAqjbcTzMWya87KRODsUg9eTO58fFw8m
 ODbD7ruTGmBQggJEqDaS5NHAiU22ce2aDn5I0WjJkH8vaJ3nQSa6nEgBOzXDMC1A
 OmaVQE6BnEAIA+nmlzbUgcuduB3iv7gTua2gy7MQSG/5jBPIAOQtpsgHtCZMA+Dt
 bk9LqDpOa6dZry7eIn5/u62YRVLX+iVO/DoxCgZyOxVfgnV/ykKT3PvWO9vviBQV
 QXXLAzLO3niDQ/ZwwpqrUWjR7oGWDKe4ntMATfnxCP7LQNrSF7LnAxz8oCcwuBxq
 ELrwME8LEQmMYGFg3SYcLA0k1teTP2UVWURUH6zBTft2xzo8bJN0JU7J52tTL4xa
 yC7JgTVeq8uQB8gkYKf43LGHlXlaxFQsnRKeCJ2JG+1yD+sOmxbZshfiLroMZ5DM
 nPKOuMdoqPCd7JVUMs/c0IgcDHd6vtkiDRA0jh38JdIdp9B/i+dFYs61bSzrkBD9
 tXUua56QTVl5WEWy2lGX+ZH/JUJbQnTxjiaW99Q9Soml6qXqIVjR5ZvLtls0PeW0
 ZytaQEGuV8758YEmOGk/1pUys/oC37mDlyjTpONGYzvAyzJqU258/YU9eJMkcQ/G
 FFEEkWILLuGgtFnyxwN/
 =p993
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.17' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Mostly small changes, as usual.

  This does add an IPMI BMC server-side driver, to allow a Linux system
  to act as an IPMI controller. That's the biggest change, but it is
  just a new driver that is fairly narrow in use.

  The other largish change is removing ACPI SPMI probe support, which
  should have never really been there in the beginning"

* tag 'for-linus-4.17' of git://github.com/cminyard/linux-ipmi:
  ipmi/parisc: Add IPMI chassis poweroff for certain HP PA-RISC and IA-64 servers
  ipmi_ssif: Fix kernel panic at msg_done_handler
  ipmi:pci: Blacklist a Realtek "IPMI" device
  ipmi: Remove ACPI SPMI probing from the system interface driver
  ipmi: Remove ACPI SPMI probing from the SSIF (I2C) driver
  ipmi: missing error code in try_smi_init()
  ipmi: use ARRAY_SIZE for poweroff_functions array sizing calculation
  ipmi: Consolidate cleanup code
  ipmi: Remove some unnecessary initializations
  ipmi: Fix some error cleanup issues
  ipmi: Add or fix SPDX-License-Identifier in all files
  ipmi: Re-use existing macros for built-in properties
  ipmi:pci: Make the PCI defines consistent with normal Linux ones
  ipmi: kcs_bmc: coding-style fixes and use new poll type
  char/ipmi: add documentation for sysfs interface
  ipmi: kcs_bmc: mark expected switch fall-through in kcs_bmc_handle_data
  ipmi: add an Aspeed KCS IPMI BMC driver
  ipmi: add a KCS IPMI BMC driver
2018-04-03 12:25:44 -07:00
Linus Torvalds
f5a8eb632b arch: remove obsolete architecture ports
This removes the entire architecture code for blackfin, cris, frv, m32r,
 metag, mn10300, score, and tile, including the associated device drivers.
 
 I have been working with the (former) maintainers for each one to ensure
 that my interpretation was right and the code is definitely unused in
 mainline kernels. Many had fond memories of working on the respective
 ports to start with and getting them included in upstream, but also saw
 no point in keeping the port alive without any users.
 
 In the end, it seems that while the eight architectures are extremely
 different, they all suffered the same fate: There was one company
 in charge of an SoC line, a CPU microarchitecture and a software
 ecosystem, which was more costly than licensing newer off-the-shelf
 CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems
 that all the SoC product lines are still around, but have not used the
 custom CPU architectures for several years at this point. In contrast,
 CPU instruction sets that remain popular and have actively maintained
 kernel ports tend to all be used across multiple licensees.
 
 The removal came out of a discussion that is now documented at
 https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
 marking any ports as deprecated but remove them all at once after I made
 sure that they are all unused. Some architectures (notably tile, mn10300,
 and blackfin) are still being shipped in products with old kernels,
 but those products will never be updated to newer kernel releases.
 
 After this series, we still have a few architectures without mainline
 gcc support:
 
 - unicore32 and hexagon both have very outdated gcc releases, but the
   maintainers promised to work on providing something newer. At least
   in case of hexagon, this will only be llvm, not gcc.
 
 - openrisc, risc-v and nds32 are still in the process of finishing their
   support or getting it added to mainline gcc in the first place.
   They all have patched gcc-7.3 ports that work to some degree, but
   complete upstream support won't happen before gcc-8.1. Csky posted
   their first kernel patch set last week, their situation will be similar.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJawdL2AAoJEGCrR//JCVInuH0P/RJAZh1nTD+TR34ZhJq2TBoo
 PgygwDU7Z2+tQVU+EZ453Gywz9/NMRFk1RWAZqrLix4ZtyIMvC6A1qfT2yH1Y7Fb
 Qh6tccQeLe4ezq5u4S/46R/fQXu3Txr92yVwzJJUuPyU0arF9rv5MmI8e6p7L1en
 yb74kSEaCe+/eMlsEj1Cc1dgthDNXGKIURHkRsILoweysCpesjiTg4qDcL+yTibV
 FP2wjVbniKESMKS6qL71tiT5sexvLsLwMNcGiHPj94qCIQuI7DLhLdBVsL5Su6gI
 sbtgv0dsq4auRYAbQdMaH1hFvu6WptsuttIbOMnz2Yegi2z28H8uVXkbk2WVLbqG
 ZESUwutGh8MzOL2RJ4jyyQq5sfo++CRGlfKjr6ImZRv03dv0pe/W85062cK5cKNs
 cgDDJjGRorOXW7dyU6jG2gRqODOQBObIv3w5efdq5OgzOWlbI4EC+Y5u1Z0JF/76
 pSwtGXA6YhwC+9LLAlnVTHG+yOwuLmAICgoKcTbzTVDKA2YQZG/cYuQfI5S1wD8e
 X6urPx3Md2GCwLXQ9mzKBzKZUpu/Tuhx0NvwF4qVxy6x1PELjn68zuP7abDHr46r
 57/09ooVN+iXXnEGMtQVS/OPvYHSa2NgTSZz6Y86lCRbZmUOOlK31RDNlMvYNA+s
 3iIVHovno/JuJnTOE8LY
 =fQ8z
 -----END PGP SIGNATURE-----

Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...
2018-04-02 20:20:12 -07:00
Linus Torvalds
486adcea4a Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
 "The main kernel side changes were:

   - Modernize the kprobe and uprobe creation/destruction tooling ABIs:

     The existing text based APIs (kprobe_events and uprobe_events in
     tracefs), are naive, limited ABIs in that they require user-space
     to clean up after themselves, which is both difficult and fragile
     if the tool is buggy or exits unexpectedly. In other words they are
     not really suited for modern, robust tooling.

     So introduce a modern, file descriptor based ABI that does not have
     these limitations: introduce the 'perf_kprobe' and 'perf_uprobe'
     PMUs and extend the perf_event_open() syscall to create events with
     a kprobe/uprobe attached to them. These [k,u]probe are associated
     with this file descriptor, so they are not available in tracefs.

     (Song Liu)

   - Intel Cannon Lake CPU support (Harry Pan)

   - Intel PT cleanups (Alexander Shishkin)

   - Improve the performance of pinned/flexible event groups by using RB
     trees (Alexey Budankov)

   - Add PERF_EVENT_IOC_MODIFY_ATTRIBUTES which allows the modification
     of hardware breakpoints, which new ABI variant massively speeds up
     existing tooling that uses hardware breakpoints to instrument (and
     debug) memory usage.

     (Milind Chabbi, Jiri Olsa)

   - Various Intel PEBS handling fixes and improvements, and other Intel
     PMU improvements (Kan Liang)

   - Various perf core improvements and optimizations (Peter Zijlstra)

   - ... misc cleanups, fixes and updates.

  There's over 200 tooling commits, here's an (imperfect) list of
  highlights:

   - 'perf annotate' improvements:

      * Recognize and handle jumps to other functions as calls, which
        improves the navigation along jumps and back. (Arnaldo Carvalho
        de Melo)

      * Add the 'P' hotkey in TUI annotation to dump annotation output
        into a file, to ease e-mail reporting of annotation details.
        (Arnaldo Carvalho de Melo)

      * Add an IPC/cycles column to the TUI (Jin Yao)

      * Improve s390 assembly annotation (Thomas Richter)

      * Refactor the output formatting logic to better separate it into
        interactive and non-interactive features and add the --stdio2
        output variant to demonstrate this. (Arnaldo Carvalho de Melo)

   - 'perf script' improvements:

      * Add Python 3 support (Jaroslav Škarvada)

      * Add --show-round-event (Jiri Olsa)

   - 'perf c2c' improvements:

      * Add NUMA analysis support (Jiri Olsa)

   - 'perf trace' improvements:

      * Improve PowerPC support (Ravi Bangoria)

   - 'perf inject' improvements:

      * Integrate ARM CoreSight traces (Robert Walker)

   - 'perf stat' improvements:

      * Add the --interval-count option (yuzhoujian)

      * Add the --timeout option (yuzhoujian)

   - 'perf sched' improvements (Changbin Du)

   - Vendor events improvements :

      * Add IBM s390 vendor events (Thomas Richter)

      * Add and improve arm64 vendor events (John Garry, Ganapatrao
        Kulkarni)

      * Update POWER9 vendor events (Sukadev Bhattiprolu)

   - Intel PT tooling improvements (Adrian Hunter)

   - PMU handling improvements (Agustin Vega-Frias)

   - Record machine topology in perf.data (Jiri Olsa)

   - Various overwrite related cleanups (Kan Liang)

   - Add arm64 dwarf post unwind support (Kim Phillips, Jean Pihet)

   - ... and lots of other changes, cleanups and fixes, see the shortlog
     and Git history for details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (262 commits)
  perf/x86/intel: Enable C-state residency events for Cannon Lake
  perf/x86/intel: Add Cannon Lake support for RAPL profiling
  perf/x86/pt, coresight: Clean up address filter structure
  perf vendor events s390: Add JSON files for IBM z14
  perf vendor events s390: Add JSON files for IBM z13
  perf vendor events s390: Add JSON files for IBM zEC12 zBC12
  perf vendor events s390: Add JSON files for IBM z196
  perf vendor events s390: Add JSON files for IBM z10EC z10BC
  perf mmap: Be consistent when checking for an unmaped ring buffer
  perf mmap: Fix accessing unmapped mmap in perf_mmap__read_done()
  perf build: Fix check-headers.sh opts assignment
  perf/x86: Update rdpmc_always_available static key to the modern API
  perf annotate: Use absolute addresses to calculate jump target offsets
  perf annotate: Defer searching for comma in raw line till it is needed
  perf annotate: Support jumping from one function to another
  perf annotate: Add "_local" to jump/offset validation routines
  perf python: Reference Py_None before returning it
  perf annotate: Mark jumps to outher functions with the call arrow
  perf annotate: Pass function descriptor to its instruction parsing routines
  perf annotate: No need to calculate notes->start twice
  ...
2018-04-02 11:06:34 -07:00
David S. Miller
c0b458a946 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor conflicts in drivers/net/ethernet/mellanox/mlx5/core/en_rep.c,
we had some overlapping changes:

1) In 'net' MLX5E_PARAMS_LOG_{SQ,RQ}_SIZE -->
   MLX5E_REP_PARAMS_LOG_{SQ,RQ}_SIZE

2) In 'net-next' params->log_rq_size is renamed to be
   params->log_rq_mtu_frames.

3) In 'net-next' params->hard_mtu is added.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-01 19:49:34 -04:00
David S. Miller
d4069fe6fc Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2018-03-31

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Add raw BPF tracepoint API in order to have a BPF program type that
   can access kernel internal arguments of the tracepoints in their
   raw form similar to kprobes based BPF programs. This infrastructure
   also adds a new BPF_RAW_TRACEPOINT_OPEN command to BPF syscall which
   returns an anon-inode backed fd for the tracepoint object that allows
   for automatic detach of the BPF program resp. unregistering of the
   tracepoint probe on fd release, from Alexei.

2) Add new BPF cgroup hooks at bind() and connect() entry in order to
   allow BPF programs to reject, inspect or modify user space passed
   struct sockaddr, and as well a hook at post bind time once the port
   has been allocated. They are used in FB's container management engine
   for implementing policy, replacing fragile LD_PRELOAD wrapper
   intercepting bind() and connect() calls that only works in limited
   scenarios like glibc based apps but not for other runtimes in
   containerized applications, from Andrey.

3) BPF_F_INGRESS flag support has been added to sockmap programs for
   their redirect helper call bringing it in line with cls_bpf based
   programs. Support is added for both variants of sockmap programs,
   meaning for tx ULP hooks as well as recv skb hooks, from John.

4) Various improvements on BPF side for the nfp driver, besides others
   this work adds BPF map update and delete helper call support from
   the datapath, JITing of 32 and 64 bit XADD instructions as well as
   offload support of bpf_get_prandom_u32() call. Initial implementation
   of nfp packet cache has been tackled that optimizes memory access
   (see merge commit for further details), from Jakub and Jiong.

5) Removal of struct bpf_verifier_env argument from the print_bpf_insn()
   API has been done in order to prepare to use print_bpf_insn() soon
   out of perf tool directly. This makes the print_bpf_insn() API more
   generic and pushes the env into private data. bpftool is adjusted
   as well with the print_bpf_insn() argument removal, from Jiri.

6) Couple of cleanups and prep work for the upcoming BTF (BPF Type
   Format). The latter will reuse the current BPF verifier log as
   well, thus bpf_verifier_log() is further generalized, from Martin.

7) For bpf_getsockopt() and bpf_setsockopt() helpers, IPv4 IP_TOS read
   and write support has been added in similar fashion to existing
   IPv6 IPV6_TCLASS socket option we already have, from Nikita.

8) Fixes in recent sockmap scatterlist API usage, which did not use
   sg_init_table() for initialization thus triggering a BUG_ON() in
   scatterlist API when CONFIG_DEBUG_SG was enabled. This adds and
   uses a small helper sg_init_marker() to properly handle the affected
   cases, from Prashant.

9) Let the BPF core follow IDR code convention and therefore use the
   idr_preload() and idr_preload_end() helpers, which would also help
   idr_alloc_cyclic() under GFP_ATOMIC to better succeed under memory
   pressure, from Shaohua.

10) Last but not least, a spelling fix in an error message for the
    BPF cookie UID helper under BPF sample code, from Colin.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 23:33:04 -04:00
Jon Maloy
7494cfa6d3 tipc: avoid possible string overflow
gcc points out that the combined length of the fixed-length inputs to
l->name is larger than the destination buffer size:

net/tipc/link.c: In function 'tipc_link_create':
net/tipc/link.c:465:26: error: '%s' directive writing up to 32 bytes
into a region of size between 26 and 58 [-Werror=format-overflow=]
sprintf(l->name, "%s:%s-%s:unknown", self_str, if_name, peer_str);

net/tipc/link.c:465:2: note: 'sprintf' output 11 or more bytes
(assuming 75) into a destination of size 60
sprintf(l->name, "%s:%s-%s:unknown", self_str, if_name, peer_str);

A detailed analysis reveals that the theoretical maximum length of
a link name is:
max self_str + 1 + max if_name + 1 + max peer_str + 1 + max if_name =
16 + 1 + 15 + 1 + 16 + 1 + 15 = 65
Since we also need space for a trailing zero we now set MAX_LINK_NAME
to 68.

Just to be on the safe side we also replace the sprintf() call with
snprintf().

Fixes: 25b0b9c4e8 ("tipc: handle collisions of 32-bit node address
hash values")
Reported-by: Arnd Bergmann <arnd@arndb.de>

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 22:19:52 -04:00
Jon Maloy
7a74d39cc2 tipc: tipc: rename address types in user api
The three address type structs in the user API have names that in
reality reflect the specific, non-Linux environment where they were
originally created.

We now give them more intuitive names, in accordance with how TIPC is
described in the current documentation.

struct tipc_portid   -> struct tipc_socket_addr
struct tipc_name     -> struct tipc_service_addr
struct tipc_name_seq -> struct tipc_service_range

To avoid confusion, we also update some commmets and macro names to
 match the new terminology.

For compatibility, we add macros that map all old names to the new ones.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 22:19:52 -04:00
Andrey Ignatov
aac3fc320d bpf: Post-hooks for sys_bind
"Post-hooks" are hooks that are called right before returning from
sys_bind. At this time IP and port are already allocated and no further
changes to `struct sock` can happen before returning from sys_bind but
BPF program has a chance to inspect the socket and change sys_bind
result.

Specifically it can e.g. inspect what port was allocated and if it
doesn't satisfy some policy, BPF program can force sys_bind to fail and
return EPERM to user.

Another example of usage is recording the IP:port pair to some map to
use it in later calls to sys_connect. E.g. if some TCP server inside
cgroup was bound to some IP:port_n, it can be recorded to a map. And
later when some TCP client inside same cgroup is trying to connect to
127.0.0.1:port_n, BPF hook for sys_connect can override the destination
and connect application to IP:port_n instead of 127.0.0.1:port_n. That
helps forcing all applications inside a cgroup to use desired IP and not
break those applications if they e.g. use localhost to communicate
between each other.

== Implementation details ==

Post-hooks are implemented as two new attach types
`BPF_CGROUP_INET4_POST_BIND` and `BPF_CGROUP_INET6_POST_BIND` for
existing prog type `BPF_PROG_TYPE_CGROUP_SOCK`.

Separate attach types for IPv4 and IPv6 are introduced to avoid access
to IPv6 field in `struct sock` from `inet_bind()` and to IPv4 field from
`inet6_bind()` since those fields might not make sense in such cases.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-31 02:16:26 +02:00
Andrey Ignatov
d74bad4e74 bpf: Hooks for sys_connect
== The problem ==

See description of the problem in the initial patch of this patch set.

== The solution ==

The patch provides much more reliable in-kernel solution for the 2nd
part of the problem: making outgoing connecttion from desired IP.

It adds new attach types `BPF_CGROUP_INET4_CONNECT` and
`BPF_CGROUP_INET6_CONNECT` for program type
`BPF_PROG_TYPE_CGROUP_SOCK_ADDR` that can be used to override both
source and destination of a connection at connect(2) time.

Local end of connection can be bound to desired IP using newly
introduced BPF-helper `bpf_bind()`. It allows to bind to only IP though,
and doesn't support binding to port, i.e. leverages
`IP_BIND_ADDRESS_NO_PORT` socket option. There are two reasons for this:
* looking for a free port is expensive and can affect performance
  significantly;
* there is no use-case for port.

As for remote end (`struct sockaddr *` passed by user), both parts of it
can be overridden, remote IP and remote port. It's useful if an
application inside cgroup wants to connect to another application inside
same cgroup or to itself, but knows nothing about IP assigned to the
cgroup.

Support is added for IPv4 and IPv6, for TCP and UDP.

IPv4 and IPv6 have separate attach types for same reason as sys_bind
hooks, i.e. to prevent reading from / writing to e.g. user_ip6 fields
when user passes sockaddr_in since it'd be out-of-bound.

== Implementation notes ==

The patch introduces new field in `struct proto`: `pre_connect` that is
a pointer to a function with same signature as `connect` but is called
before it. The reason is in some cases BPF hooks should be called way
before control is passed to `sk->sk_prot->connect`. Specifically
`inet_dgram_connect` autobinds socket before calling
`sk->sk_prot->connect` and there is no way to call `bpf_bind()` from
hooks from e.g. `ip4_datagram_connect` or `ip6_datagram_connect` since
it'd cause double-bind. On the other hand `proto.pre_connect` provides a
flexible way to add BPF hooks for connect only for necessary `proto` and
call them at desired time before `connect`. Since `bpf_bind()` is
allowed to bind only to IP and autobind in `inet_dgram_connect` binds
only port there is no chance of double-bind.

bpf_bind() sets `force_bind_address_no_port` to bind to only IP despite
of value of `bind_address_no_port` socket field.

bpf_bind() sets `with_lock` to `false` when calling to __inet_bind()
and __inet6_bind() since all call-sites, where bpf_bind() is called,
already hold socket lock.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-31 02:15:54 +02:00
Andrey Ignatov
4fbac77d2d bpf: Hooks for sys_bind
== The problem ==

There is a use-case when all processes inside a cgroup should use one
single IP address on a host that has multiple IP configured.  Those
processes should use the IP for both ingress and egress, for TCP and UDP
traffic. So TCP/UDP servers should be bound to that IP to accept
incoming connections on it, and TCP/UDP clients should make outgoing
connections from that IP. It should not require changing application
code since it's often not possible.

Currently it's solved by intercepting glibc wrappers around syscalls
such as `bind(2)` and `connect(2)`. It's done by a shared library that
is preloaded for every process in a cgroup so that whenever TCP/UDP
server calls `bind(2)`, the library replaces IP in sockaddr before
passing arguments to syscall. When application calls `connect(2)` the
library transparently binds the local end of connection to that IP
(`bind(2)` with `IP_BIND_ADDRESS_NO_PORT` to avoid performance penalty).

Shared library approach is fragile though, e.g.:
* some applications clear env vars (incl. `LD_PRELOAD`);
* `/etc/ld.so.preload` doesn't help since some applications are linked
  with option `-z nodefaultlib`;
* other applications don't use glibc and there is nothing to intercept.

== The solution ==

The patch provides much more reliable in-kernel solution for the 1st
part of the problem: binding TCP/UDP servers on desired IP. It does not
depend on application environment and implementation details (whether
glibc is used or not).

It adds new eBPF program type `BPF_PROG_TYPE_CGROUP_SOCK_ADDR` and
attach types `BPF_CGROUP_INET4_BIND` and `BPF_CGROUP_INET6_BIND`
(similar to already existing `BPF_CGROUP_INET_SOCK_CREATE`).

The new program type is intended to be used with sockets (`struct sock`)
in a cgroup and provided by user `struct sockaddr`. Pointers to both of
them are parts of the context passed to programs of newly added types.

The new attach types provides hooks in `bind(2)` system call for both
IPv4 and IPv6 so that one can write a program to override IP addresses
and ports user program tries to bind to and apply such a program for
whole cgroup.

== Implementation notes ==

[1]
Separate attach types for `AF_INET` and `AF_INET6` are added
intentionally to prevent reading/writing to offsets that don't make
sense for corresponding socket family. E.g. if user passes `sockaddr_in`
it doesn't make sense to read from / write to `user_ip6[]` context
fields.

[2]
The write access to `struct bpf_sock_addr_kern` is implemented using
special field as an additional "register".

There are just two registers in `sock_addr_convert_ctx_access`: `src`
with value to write and `dst` with pointer to context that can't be
changed not to break later instructions. But the fields, allowed to
write to, are not available directly and to access them address of
corresponding pointer has to be loaded first. To get additional register
the 1st not used by `src` and `dst` one is taken, its content is saved
to `bpf_sock_addr_kern.tmp_reg`, then the register is used to load
address of pointer field, and finally the register's content is restored
from the temporary field after writing `src` value.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-31 02:15:18 +02:00
Andrey Ignatov
5e43f899b0 bpf: Check attach type at prog load time
== The problem ==

There are use-cases when a program of some type can be attached to
multiple attach points and those attach points must have different
permissions to access context or to call helpers.

E.g. context structure may have fields for both IPv4 and IPv6 but it
doesn't make sense to read from / write to IPv6 field when attach point
is somewhere in IPv4 stack.

Same applies to BPF-helpers: it may make sense to call some helper from
some attach point, but not from other for same prog type.

== The solution ==

Introduce `expected_attach_type` field in in `struct bpf_attr` for
`BPF_PROG_LOAD` command. If scenario described in "The problem" section
is the case for some prog type, the field will be checked twice:

1) At load time prog type is checked to see if attach type for it must
   be known to validate program permissions correctly. Prog will be
   rejected with EINVAL if it's the case and `expected_attach_type` is
   not specified or has invalid value.

2) At attach time `attach_type` is compared with `expected_attach_type`,
   if prog type requires to have one, and, if they differ, attach will
   be rejected with EINVAL.

The `expected_attach_type` is now available as part of `struct bpf_prog`
in both `bpf_verifier_ops->is_valid_access()` and
`bpf_verifier_ops->get_func_proto()` () and can be used to check context
accesses and calls to helpers correspondingly.

Initially the idea was discussed by Alexei Starovoitov <ast@fb.com> and
Daniel Borkmann <daniel@iogearbox.net> here:
https://marc.info/?l=linux-netdev&m=152107378717201&w=2

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-31 02:14:44 +02:00
David S. Miller
d162190bde 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 Netfilter/IPVS updates for your net-next
tree. This batch comes with more input sanitization for xtables to
address bug reports from fuzzers, preparation works to the flowtable
infrastructure and assorted updates. In no particular order, they are:

1) Make sure userspace provides a valid standard target verdict, from
   Florian Westphal.

2) Sanitize error target size, also from Florian.

3) Validate that last rule in basechain matches underflow/policy since
   userspace assumes this when decoding the ruleset blob that comes
   from the kernel, from Florian.

4) Consolidate hook entry checks through xt_check_table_hooks(),
   patch from Florian.

5) Cap ruleset allocations at 512 mbytes, 134217728 rules and reject
   very large compat offset arrays, so we have a reasonable upper limit
   and fuzzers don't exercise the oom-killer. Patches from Florian.

6) Several WARN_ON checks on xtables mutex helper, from Florian.

7) xt_rateest now has a hashtable per net, from Cong Wang.

8) Consolidate counter allocation in xt_counters_alloc(), from Florian.

9) Earlier xt_table_unlock() call in {ip,ip6,arp,eb}tables, patch
   from Xin Long.

10) Set FLOW_OFFLOAD_DIR_* to IP_CT_DIR_* definitions, patch from
    Felix Fietkau.

11) Consolidate code through flow_offload_fill_dir(), also from Felix.

12) Inline ip6_dst_mtu_forward() just like ip_dst_mtu_maybe_forward()
    to remove a dependency with flowtable and ipv6.ko, from Felix.

13) Cache mtu size in flow_offload_tuple object, this is safe for
    forwarding as f87c10a8aa describes, from Felix.

14) Rename nf_flow_table.c to nf_flow_table_core.o, to simplify too
    modular infrastructure, from Felix.

15) Add rt0, rt2 and rt4 IPv6 routing extension support, patch from
    Ahmed Abdelsalam.

16) Remove unused parameter in nf_conncount_count(), from Yi-Hung Wei.

17) Support for counting only to nf_conncount infrastructure, patch
    from Yi-Hung Wei.

18) Add strict NFT_CT_{SRC_IP,DST_IP,SRC_IP6,DST_IP6} key datatypes
    to nft_ct.

19) Use boolean as return value from ipt_ah and from IPVS too, patch
    from Gustavo A. R. Silva.

20) Remove useless parameters in nfnl_acct_overquota() and
    nf_conntrack_broadcast_help(), from Taehee Yoo.

21) Use ipv6_addr_is_multicast() from xt_cluster, also from Taehee Yoo.

22) Statify nf_tables_obj_lookup_byhandle, patch from Fengguang Wu.

23) Fix typo in xt_limit, from Geert Uytterhoeven.

24) Do no use VLAs in Netfilter code, again from Gustavo.

25) Use ADD_COUNTER from ebtables, from Taehee Yoo.

26) Bitshift support for CONNMARK and MARK targets, from Jack Ma.

27) Use pr_*() and add pr_fmt(), from Arushi Singhal.

28) Add synproxy support to ctnetlink.

29) ICMP type and IGMP matching support for ebtables, patches from
    Matthias Schiffer.

30) Support for the revision infrastructure to ebtables, from
    Bernie Harris.

31) String match support for ebtables, also from Bernie.

32) Documentation for the new flowtable infrastructure.

33) Use generic comparison functions in ebt_stp, from Joe Perches.

34) Demodularize filter chains in nftables.

35) Register conntrack hooks in case nftables NAT chain is added.

36) Merge assignments with return in a couple of spots in the
    Netfilter codebase, also from Arushi.

37) Document that xtables percpu counters are stored in the same
    memory area, from Ben Hutchings.

38) Revert mark_source_chains() sanity checks that break existing
    rulesets, from Florian Westphal.

39) Use is_zero_ether_addr() in the ipset codebase, from Joe Perches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 11:41:18 -04:00
Bernie Harris
39c202d228 netfilter: ebtables: Add support for specifying match revision
Currently ebtables assumes that the revision number of all match
modules is 0, which is an issue when trying to use existing
xtables matches with ebtables. The solution is to modify ebtables
to allow extensions to specify a revision number, similar to
iptables. This gets passed down to the kernel, which is then able
to find the match module correctly.

To main binary backwards compatibility, the size of the ebt_entry
structures is not changed, only the size of the name field is
decreased by 1 byte to make room for the revision field.

Signed-off-by: Bernie Harris <bernie.harris@alliedtelesis.co.nz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-03-30 11:03:39 +02:00
David S. Miller
e15f20ea33 We have a fair number of patches, but many of them are from the
first bullet here:
  * EAPoL-over-nl80211 from Denis - this will let us fix
    some long-standing issues with bridging, races with
    encryption and more
  * DFS offload support from the qtnfmac folks
  * regulatory database changes for the new ETSI adaptivity
    requirements
  * various other fixes and small enhancements
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAlq85QQACgkQB8qZga/f
 l8Sdbg//bc8C/4F1TUdJqZWGK1j9Lwd6nZpP0iFqH5Ees3MMnti5XdV2dCL31ivz
 c8DOuRAU8ZG/RLPgSTHVZHwh+f7S5/TxSKg8WOBvrYk7a0C1uvVVhe5XZQEmqE7g
 eqM0+UQ5DyzUYnu0kSUrFKPV7BqDa2YzVDdK8e8iozqZmAnvGN9k8H7EDEeUxtxk
 LEl+bEcmhDSfIssU2Iaksl+9qoZP6BkoVGAOmDzIL654WV4XVKorxRX6vndqSQGu
 0cCz2Occ+/0hfvszONBRR4M/gtI/Yyn3u+D1Q0YD3X40Q9gJE11fcodmMT61l5C7
 rGcu94RIGilvRvjZScK3giiU2L7DD+VETUa+YGnjd8gLpmrYd6cURxlm4yuHbw8C
 UScLCApAUuY+skmPLeuyHW9mnzHaC336vzVjk8OhdNRhX23/rB8nk1yIywgqETVW
 g/iub8/Xp6TRfdyh76I18wlfqCp1It2JAeICgKH5NPlwUA6U0xFR0/ddSR8FuAcK
 ZLY8mgsc2kIH6r4x5sjeH+Yb6tGi/Z3HMZM2hna+t4vSpn6Q5+GPsA6yuHuBUhJb
 8QswMiLDSux8I4guKgQyROiHaCzE3zOigJ4o1z9XITKsgluZVxnKr+ETKdr88WFp
 II8U0qH/kejXIfxUjbv5Wla70J9wi/hjxR6vOfSkEtYNvIApdfc=
 =hI0F
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2018-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
We have a fair number of patches, but many of them are from the
first bullet here:
 * EAPoL-over-nl80211 from Denis - this will let us fix
   some long-standing issues with bridging, races with
   encryption and more
 * DFS offload support from the qtnfmac folks
 * regulatory database changes for the new ETSI adaptivity
   requirements
 * various other fixes and small enhancements
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-29 16:23:26 -04:00
Ingo Molnar
2d074918fb Merge branch 'perf/urgent' into perf/core
Conflicts:
	kernel/events/hw_breakpoint.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-03-29 16:03:48 +02:00
Greg Kroah-Hartman
86f690e8bf stm class/intel_th: Updates for 4.17
These are:
   * Mass conversion to GPL-2 SPDX header
   * Moved "hwtracing" to now its own submenu, to uncrowd the parent menu a bit
   * Added MAINTAINERS entry for drivers/hwtracing
   * Somewhat small Trace Hub fixes
   * Added ACPI glue layer for the Trace Hub
   * Added more module parameters to dummy_stm for better test coverage
 -----BEGIN PGP SIGNATURE-----
 
 iJkEABEIAEEWIQQSviFCoXpKPDNATbnrxfYkYwVX/wUCWrzG7yMcYWxleGFuZGVy
 LnNoaXNoa2luQGxpbnV4LmludGVsLmNvbQAKCRDrxfYkYwVX/0jcAQCE/maw6L5P
 NdT3Ck3EuDWzij9uimq3Y0UyI9F4Cd+vYgD+N8Skyiua+NqfBGB0oXNsJt2acirg
 O3G990RK9dX4H2c=
 =CuGw
 -----END PGP SIGNATURE-----

Merge tag 'stm-intel_th-for-greg-20180329' of git://git.kernel.org/pub/scm/linux/kernel/git/ash/stm into char-misc-next

Alexander writes:

stm class/intel_th: Updates for 4.17

These are:
  * Mass conversion to GPL-2 SPDX header
  * Moved "hwtracing" to now its own submenu, to uncrowd the parent menu a bit
  * Added MAINTAINERS entry for drivers/hwtracing
  * Somewhat small Trace Hub fixes
  * Added ACPI glue layer for the Trace Hub
  * Added more module parameters to dummy_stm for better test coverage
2018-03-29 14:15:13 +02:00
Denis Kenzior
64bf3d4bc2 nl80211: Add CONTROL_PORT_OVER_NL80211 attribute
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 13:45:04 +02:00
Denis Kenzior
2576a9ace4 nl80211: Implement TX of control port frames
This commit implements the TX side of NL80211_CMD_CONTROL_PORT_FRAME.
Userspace provides the raw EAPoL frame using NL80211_ATTR_FRAME.
Userspace should also provide the destination address and the protocol
type to use when sending the frame.  This is used to implement TX of
Pre-authentication frames.  If CONTROL_PORT_ETHERTYPE_NO_ENCRYPT is
specified, then the driver will be asked not to encrypt the outgoing
frame.

A new EXT_FEATURE flag is introduced so that nl80211 code can check
whether a given wiphy has capability to pass EAPoL frames over nl80211.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 13:44:19 +02:00
Denis Kenzior
6a671a50f8 nl80211: Add CMD_CONTROL_PORT_FRAME API
This commit also adds cfg80211_rx_control_port function.  This is used
to generate a CMD_CONTROL_PORT_FRAME event out to userspace.  The
conn_owner_nlportid is used as the unicast destination.  This means that
userspace must specify NL80211_ATTR_SOCKET_OWNER flag if control port
over nl80211 routing is requested in NL80211_CMD_CONNECT,
NL80211_CMD_ASSOCIATE, NL80211_CMD_START_AP or IBSS/mesh join.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[johannes: fix return value of cfg80211_rx_control_port()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 13:44:04 +02:00
Denis Kenzior
466a306142 nl80211: Add SOCKET_OWNER support to START_AP
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 10:47:28 +02:00
Denis Kenzior
188c1b3c04 nl80211: Add SOCKET_OWNER support to JOIN_MESH
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[johannes: fix race with wdev lock/unlock by just acquiring once]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 10:38:24 +02:00
Denis Kenzior
f8d16d3edb nl80211: Add SOCKET_OWNER support to JOIN_IBSS
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[johannes: fix race with wdev lock/unlock by just acquiring once]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 10:36:22 +02:00
Alexei Starovoitov
c4f6699dfc bpf: introduce BPF_RAW_TRACEPOINT
Introduce BPF_PROG_TYPE_RAW_TRACEPOINT bpf program type to access
kernel internal arguments of the tracepoints in their raw form.

>From bpf program point of view the access to the arguments look like:
struct bpf_raw_tracepoint_args {
       __u64 args[0];
};

int bpf_prog(struct bpf_raw_tracepoint_args *ctx)
{
  // program can read args[N] where N depends on tracepoint
  // and statically verified at program load+attach time
}

kprobe+bpf infrastructure allows programs access function arguments.
This feature allows programs access raw tracepoint arguments.

Similar to proposed 'dynamic ftrace events' there are no abi guarantees
to what the tracepoints arguments are and what their meaning is.
The program needs to type cast args properly and use bpf_probe_read()
helper to access struct fields when argument is a pointer.

For every tracepoint __bpf_trace_##call function is prepared.
In assembler it looks like:
(gdb) disassemble __bpf_trace_xdp_exception
Dump of assembler code for function __bpf_trace_xdp_exception:
   0xffffffff81132080 <+0>:     mov    %ecx,%ecx
   0xffffffff81132082 <+2>:     jmpq   0xffffffff811231f0 <bpf_trace_run3>

where

TRACE_EVENT(xdp_exception,
        TP_PROTO(const struct net_device *dev,
                 const struct bpf_prog *xdp, u32 act),

The above assembler snippet is casting 32-bit 'act' field into 'u64'
to pass into bpf_trace_run3(), while 'dev' and 'xdp' args are passed as-is.
All of ~500 of __bpf_trace_*() functions are only 5-10 byte long
and in total this approach adds 7k bytes to .text.

This approach gives the lowest possible overhead
while calling trace_xdp_exception() from kernel C code and
transitioning into bpf land.
Since tracepoint+bpf are used at speeds of 1M+ events per second
this is valuable optimization.

The new BPF_RAW_TRACEPOINT_OPEN sys_bpf command is introduced
that returns anon_inode FD of 'bpf-raw-tracepoint' object.

The user space looks like:
// load bpf prog with BPF_PROG_TYPE_RAW_TRACEPOINT type
prog_fd = bpf_prog_load(...);
// receive anon_inode fd for given bpf_raw_tracepoint with prog attached
raw_tp_fd = bpf_raw_tracepoint_open("xdp_exception", prog_fd);

Ctrl-C of tracing daemon or cmdline tool that uses this feature
will automatically detach bpf program, unload it and
unregister tracepoint probe.

On the kernel side the __bpf_raw_tp_map section of pointers to
tracepoint definition and to __bpf_trace_*() probe function is used
to find a tracepoint with "xdp_exception" name and
corresponding __bpf_trace_xdp_exception() probe function
which are passed to tracepoint_probe_register() to connect probe
with tracepoint.

Addition of bpf_raw_tracepoint doesn't interfere with ftrace and perf
tracepoint mechanisms. perf_event_open() can be used in parallel
on the same tracepoint.
Multiple bpf_raw_tracepoint_open("xdp_exception", prog_fd) are permitted.
Each with its own bpf program. The kernel will execute
all tracepoint probes and all attached bpf programs.

In the future bpf_raw_tracepoints can be extended with
query/introspection logic.

__bpf_raw_tp_map section logic was contributed by Steven Rostedt

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-28 22:55:19 +02:00
Alexander Shishkin
4f0c7c6a12 stm class: Make dummy's master/channel ranges configurable
To allow for more flexible testing of the stm class, make it possible
to specify the ranges of masters and channels that the dummy_stm devices
cover. This is done via module parameters.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2018-03-28 18:47:18 +03:00
Alexander Shishkin
9ea393d8d8 stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
This adds SPDX GPL-2.0 header to to stm core files and removes the
GPLv2 boilerplate text.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2018-03-28 18:47:17 +03:00
Greg Kroah-Hartman
a0306db6e5 Merge 4.16-rc7 into staging-next
We want the IIO and staging driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-28 13:33:37 +02:00
Dave Airlie
9f36f9c8ee Merge tag 'drm-amdkfd-next-2018-03-27' of git://people.freedesktop.org/~gabbayo/linux into drm-next
- GPUVM support for dGPUs
- KFD events support for dGPUs
- Fix live-lock situation when restoring multiple evicted processes
- Fix VM page table allocation on large-bar systems
- Fix for build failure on frv architecture

* tag 'drm-amdkfd-next-2018-03-27' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: Use ordered workqueue to restore processes
  drm/amdgpu: Fix acquiring VM on large-BAR systems
  drm/amdkfd: Add module option for testing large-BAR functionality
  drm/amdkfd: Kmap event page for dGPUs
  drm/amdkfd: Add ioctls for GPUVM memory management
  drm/amdkfd: Add TC flush on VMID deallocation for Hawaii
  drm/amdkfd: Allocate CWSR trap handler memory for dGPUs
  drm/amdkfd: Add per-process IDR for buffer handles
  drm/amdkfd: Aperture setup for dGPUs
  drm/amdkfd: Remove limit on number of GPUs
  drm/amdkfd: Populate DRM render device minor
  drm/amdkfd: Create KFD VMs on demand
  drm/amdgpu: Add kfd2kgd interface to acquire an existing VM
  drm/amdgpu: Add helper to turn an existing VM into a compute VM
  drm/amdgpu: Fix initial validation of PD BO for KFD VMs
  drm/amdgpu: Move KFD-specific fields into struct amdgpu_vm
  drm/amdkfd: fix uninitialized variable use
  drm/amdkfd: add missing include of mm.h
2018-03-28 14:49:19 +10:00
Dave Airlie
2b4f44eec2 Linux 4.16-rc7
-----BEGIN PGP SIGNATURE-----
 
 iQEcBAABAgAGBQJauCZfAAoJEHm+PkMAQRiGWGUH/2rhdQDkoJpYWnjaQkolECG8
 MxpGE7nmIIHxQcbSDdHTGJ8IhVm6Z5wZ7ym/PwCDTT043Y1y341sJrIwL2/nTG6d
 HVidk8hFvgN6QzlzVAHT3ZZMII/V9Zt+VV5SUYLGnPAVuJNHo/6uzWlTU5g+NTFo
 IquFDdQUaGBlkKqby+NoAFnkV1UAIkW0g22cfvPnlO5GMer0gusGyVNvVp7TNj3C
 sqj4Hvt3RMDLMNe9RZ2pFTiOD096n8FWpYftZneUTxFImhRV3Jg5MaaYZm9SI3HW
 tXrv/LChT/F1mi5Pkx6tkT5Hr8WvcrwDMJ4It1kom10RqWAgjxIR3CMm448ileY=
 =YKUG
 -----END PGP SIGNATURE-----

Backmerge tag 'v4.16-rc7' into drm-next

Linux 4.16-rc7

This was requested by Daniel, and things were getting
a bit hard to reconcile, most of the conflicts were
trivial though.
2018-03-28 14:30:41 +10:00
Inbar Karmy
e1577c1c88 ethtool: Add support for configuring PFC stall prevention in ethtool
In the event where the device unexpectedly becomes unresponsive
for a long period of time, flow control mechanism may propagate
pause frames which will cause congestion spreading to the entire
network.
To prevent this scenario, when the device is stalled for a period
longer than a pre-configured timeout, flow control mechanisms are
automatically disabled.

This patch adds support for the ETHTOOL_PFC_STALL_PREVENTION
as a tunable.
This API provides support for configuring flow control storm prevention
timeout (msec).

Signed-off-by: Inbar Karmy <inbark@mellanox.com>
Cc: Michal Kubecek <mkubecek@suse.cz>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-03-26 13:46:46 -07:00
Arnd Bergmann
a0673fdbcd asm-generic: clean up asm/unistd.h
The score architecture used a number of old system calls for compatibility
with a traditional libc port, all architectures that got added later
skip these. With score out of the way, we can finally clean up the
syscall list to no longer provide these.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26 15:56:08 +02:00
Arnd Bergmann
a402ab8cc7 asm-generic: siginfo: define ia64 si_codes unconditionally
Unlike system call numbers the assignment of si_codes has never had a
reason to be made per architecture.  Some architectures have had unique
conditions to report and reporting those conditions needed new si_codes.
Nothing has ever needed si_codes to have different values on different
architectures.  The si_code space is vast so even with defining all
si_codes on all architectures there is no danger in running out of
si_code values.

The history of the si_codes BUS_MCEERR_AR, BUS_MCEER_AO, SEGV_BNDERR,
and SEGV_PKUERR show that a need of one architecture frequently becomes
a need of another architecture which makes sharing si_codes between
architectures a positive benefit and something to be encouraged.

Where there are no conflicts with the historical ia64 arch specific
si_codes and any other si_codes make them generic si_codes.  We might
need them on another architecture someday.

This leaves only the good example of arch generic si_codes in the kernel
for future architectures and architecture enhancments to follow.
Without bad examples to follow it should be easy to avoid the mistakes
of the past.

Reported-by: Eric W. Biederman <ebiederm@xmission.com>
[arnd: took Eric's changelog text]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26 15:56:06 +02:00
Arnd Bergmann
3f664931b3 asm-generic: siginfo: remove obsolete #ifdefs
The frv, tile and blackfin architectures are being removed, so
we can clean up this header by removing all the special cases
except those for ia64.

The SEGV_BNDERR and BUS_MCEERR_AR si_code macros are now
defined unconditionally on all remaining architectures.

Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26 15:56:05 +02:00
Dave Airlie
33d009cd88 Merge branch 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-next
Last pull for 4.17.  Highlights:
- Vega12 support
- A few more bug fixes and cleanups for powerplay

* 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux: (77 commits)
  drm/amd/pp: clean header file hwmgr.h
  drm/amd/pp: use mlck_table.count for array loop index limit
  drm/amdgpu: Add an ATPX quirk for hybrid laptop
  drm/amdgpu: fix spelling mistake: "asssert" -> "assert"
  drm/amd/pp: Add new asic support in pp_psm.c
  drm/amd/pp: Clean up powerplay code on Vega12
  drm/amd/pp: Add smu irq handlers for legacy asics
  drm/amd/pp: Fix set wrong temperature range on smu7
  drm/amdgpu: Don't change preferred domian when fallback GTT v5
  drm/amdgpu: Fix NULL ptr on driver unload due to init failure.
  drm/amdgpu: fix "mitigate workaround for i915"
  drm/amd/pp: Add smu irq handlers in sw_init instand of hw_init
  drm/amd/pp: Refine register_thermal_interrupt function
  drm/amdgpu: Remove wrapper layer of cgs irq handling
  drm/amd/powerplay: Return per DPM level clock
  drm/amd/powerplay: Remove the SOC floor voltage setting
  drm/amdgpu: no job timeout setting on compute queues
  drm/amdgpu: add vega12 pci ids (v2)
  drm/amd/powerplay: add the hw manager for vega12 (v4)
  drm/amd/powerplay: add the smu manager for vega12 (v4)
  ...
2018-03-26 10:01:11 +10:00
Linus Torvalds
cde00d2169 media fixes for v4.16-rc7
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJatQDcAAoJEAhfPr2O5OEVHe8P/1Ci/5hJ0p8VfEIYXmLtyqiB
 3SnXZdvvNifAeSqXfsm7650C+Aamp4E6iNgbn6+DnQ2ZMVrq9LsIbVQHtJI76F5U
 v1949Not30aD922jCS1M1yTth/HCZapDfch+6qRCyRX9o9Nap0OlePoeUwbeI7Rb
 Mwxf8rOQbEN1Mj5Hfajh9j8O/9StJdIHk7KLebAqwoUlu/YJ0z89H540UKHbPwN+
 Z5G+xVTKUp+qztpo4Y7JVcuDL4K012gPVEzepM0aUuqLvs4drV2qJ0OeWW0dKllE
 JxEVXHIxUymKriWOq340XeJ0GiLY2UVy2iqr21Gza4hd4kIunm3g3utnGBQgjQtp
 CkgVORBGVkpu/74drecl5SqMpPKiiKelY7e2LJCb9uxEWu8h8BBPaiYOM4V3MGIU
 jNTKZgGyJPwxH3dv6vv7jJJ87HjYHHZC+/HVQSRRhyLdONzPKHRKjuZbmmXT4l7o
 RJ670mMD1m0FM5paYJ7jGZJ0jMYNh8UyehJ65lHcWsnGh7aTgQ7Rv/xnGGxiKhkl
 ByclFqLTXfsVdBsi18Jno+l7s8vhowp+DCL8aqpt44wIE4W2gkRY1bD9/MihGiZy
 ZaICuMAh/cp3QGC+cAJGY06jjXbnM6TfzQsBlTii31QqBhlezdoaeEq+7LmMjVfP
 GB1yHdlOWMLPIIcQQ4wG
 =sSiA
 -----END PGP SIGNATURE-----

Merge tag 'media/v4.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "Three fixes:

   - dvb: fix a Kconfig typo on a help text

   - tegra-cec: reset rx_buf_cnt when start bit detected

   - rc: lirc does not use LIRC_CAN_SEND_SCANCODE feature"

* tag 'media/v4.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: dvb: fix a Kconfig typo
  media: tegra-cec: reset rx_buf_cnt when start bit detected
  media: rc: lirc does not use LIRC_CAN_SEND_SCANCODE feature
2018-03-23 10:59:38 -07:00
Linus Torvalds
8ce72017ca sound fixes for 4.16-rc7
Things look calming down, but people were still busy to plaster over
 small holes:
 
 - Two fixes to harden against races in aloop driver
 - A correction of a long-standing bug in USB-audio UAC2 processing
   unit parser
 - As usual suspects, HD-audio: a workaround for Coffee Lake
   controller and a few other device-specific fixes
 
 All small and for stable.
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAlq0ytkOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE8KKg/+NriAIsRozvpJB7/dYwEwTI6cAtEug/9MuNkw
 efB0MOT3y5Cpkf0j9wOxEOUXhRRGb1qoYfaIOp+FansZZmddW2q8PNUPgUScYgrD
 zU35wW1sOoPccJjPRPn/2Ck9CRbX8voZ84Ahz7se7WcZFk4zgO4Fso0MmPilQnHx
 NQVLnztSkOOb4KirbYAiICG30U5ZrukAM9UaHVTrH0IUppihfSSOTncLULIiGPkq
 iIlY8HrpZw6un/5BbBH8bHdeAB9GSPrEEQo6r5UAUSYOT0jfpmN8h/inZyID4evF
 CFvGcTqG7pr5A3Nsqi6igrniaVsyFQNxHVEHfh5M3M10t8wBrk7uazWapTMunAcY
 hx/2VmmkPuZoovRVz2ZPsioeOiJAIS2DSTXrimNI6AUrrPTh3tElEVt9fbxOWAyr
 FeLjg/LGCy5yK9UfDMsLy5Zhe5d3hZG/pqbQ1F81B4c/LzL0sQ+6KKvqpjDMdEjH
 svcABHZZlHK06bzc9ykQE+9X9VO/0LrSE+koMpfa1L0AdXxogUEozigG5jUwYYjg
 eMlkT6WxGhPuCU2RUVvU/Aa3VWX6EbaGswxpTqJl6DyjP2WWp827hCEWJJgzx6SR
 pkZsFASO6HdXJObep6pYyEFFa11KZo1sJPa8SGMo9PC8XQwDjjW+oPqlo/QB9hJb
 nYVAnc4=
 =xZMj
 -----END PGP SIGNATURE-----

Merge tag 'sound-4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Things look calming down, but people were still busy to plaster over
  small holes:

   - Two fixes to harden against races in aloop driver

   - A correction of a long-standing bug in USB-audio UAC2 processing
     unit parser

   - As usual suspects, HD-audio: a workaround for Coffee Lake
     controller and a few other device-specific fixes

  All small and for stable"

* tag 'sound-4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: aloop: Fix access to not-yet-ready substream via cable
  ALSA: aloop: Sync stale timer before release
  ALSA: hda/realtek - Fix speaker no sound after system resume
  ALSA: hda/realtek - Fix Dell headset Mic can't record
  ALSA: hda - Force polling mode on CFL for fixing codec communication
  ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
  ALSA: hda/realtek - Always immediately update mute LED with pin VREF
2018-03-23 10:17:32 -07:00
Jon Maloy
d50ccc2d39 tipc: add 128-bit node identifier
We add a 128-bit node identity, as an alternative to the currently used
32-bit node address.

For the sake of compatibility and to minimize message header changes
we retain the existing 32-bit address field. When not set explicitly by
the user, this field will be filled with a hash value generated from the
much longer node identity, and be used as a shorthand value for the
latter.

We permit either the address or the identity to be set by configuration,
but not both, so when the address value is set by a legacy user the
corresponding 128-bit node identity is generated based on the that value.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-23 13:12:18 -04:00
Dave Watson
c46234ebb4 tls: RX path for ktls
Add rx path for tls software implementation.

recvmsg, splice_read, and poll implemented.

An additional sockopt TLS_RX is added, with the same interface as
TLS_TX.  Either TLX_RX or TLX_TX may be provided separately, or
together (with two different setsockopt calls with appropriate keys).

Control messages are passed via CMSG in a similar way to transmit.
If no cmsg buffer is passed, then only application data records
will be passed to userspace, and EIO is returned for other types of
alerts.

EBADMSG is passed for decryption errors, and EMSGSIZE is passed for
framing too big, and EBADMSG for framing too small (matching openssl
semantics). EINVAL is returned for TLS versions that do not match the
original setsockopt call.  All are unrecoverable.

strparser is used to parse TLS framing.   Decryption is done directly
in to userspace buffers if they are large enough to support it, otherwise
sk_cow_data is called (similar to ipsec), and buffers are decrypted in
place and copied.  splice_read always decrypts in place, since no
buffers are provided to decrypt in to.

sk_poll is overridden, and only returns POLLIN if a full TLS message is
received.  Otherwise we wait for strparser to finish reading a full frame.
Actual decryption is only done during recvmsg or splice_read calls.

Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-23 12:25:54 -04:00
David S. Miller
03fe2debbb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Fun set of conflict resolutions here...

For the mac80211 stuff, these were fortunately just parallel
adds.  Trivially resolved.

In drivers/net/phy/phy.c we had a bug fix in 'net' that moved the
function phy_disable_interrupts() earlier in the file, whilst in
'net-next' the phy_error() call from this function was removed.

In net/ipv4/xfrm4_policy.c, David Ahern's changes to remove the
'rt_table_id' member of rtable collided with a bug fix in 'net' that
added a new struct member "rt_mtu_locked" which needs to be copied
over here.

The mlxsw driver conflict consisted of net-next separating
the span code and definitions into separate files, whilst
a 'net' bug fix made some changes to that moved code.

The mlx5 infiniband conflict resolution was quite non-trivial,
the RDMA tree's merge commit was used as a guide here, and
here are their notes:

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

    Due to bug fixes found by the syzkaller bot and taken into the for-rc
    branch after development for the 4.17 merge window had already started
    being taken into the for-next branch, there were fairly non-trivial
    merge issues that would need to be resolved between the for-rc branch
    and the for-next branch.  This merge resolves those conflicts and
    provides a unified base upon which ongoing development for 4.17 can
    be based.

    Conflicts:
            drivers/infiniband/hw/mlx5/main.c - Commit 42cea83f95
            (IB/mlx5: Fix cleanup order on unload) added to for-rc and
            commit b5ca15ad7e (IB/mlx5: Add proper representors support)
            add as part of the devel cycle both needed to modify the
            init/de-init functions used by mlx5.  To support the new
            representors, the new functions added by the cleanup patch
            needed to be made non-static, and the init/de-init list
            added by the representors patch needed to be modified to
            match the init/de-init list changes made by the cleanup
            patch.
    Updates:
            drivers/infiniband/hw/mlx5/mlx5_ib.h - Update function
            prototypes added by representors patch to reflect new function
            names as changed by cleanup patch
            drivers/infiniband/hw/mlx5/ib_rep.c - Update init/de-init
            stage list to match new order from cleanup patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-23 11:31:58 -04:00
Linus Torvalds
c4f4d2f917 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Always validate XFRM esn replay attribute, from Florian Westphal.

 2) Fix RCU read lock imbalance in xfrm_get_tos(), from Xin Long.

 3) Don't try to get firmware dump if not loaded in iwlwifi, from Shaul
    Triebitz.

 4) Fix BPF helpers to deal with SCTP GSO SKBs properly, from Daniel
    Axtens.

 5) Fix some interrupt handling issues in e1000e driver, from Benjamin
    Poitier.

 6) Use strlcpy() in several ethtool get_strings methods, from Florian
    Fainelli.

 7) Fix rhlist dup insertion, from Paul Blakey.

 8) Fix SKB leak in netem packet scheduler, from Alexey Kodanev.

 9) Fix driver unload crash when link is up in smsc911x, from Jeremy
    Linton.

10) Purge out invalid socket types in l2tp_tunnel_create(), from Eric
    Dumazet.

11) Need to purge the write queue when TCP connections are aborted,
    otherwise userspace using MSG_ZEROCOPY can't close the fd. From
    Soheil Hassas Yeganeh.

12) Fix double free in error path of team driver, from Arkadi
    Sharshevsky.

13) Filter fixes for hv_netvsc driver, from Stephen Hemminger.

14) Fix non-linear packet access in ipv6 ndisc code, from Lorenzo
    Bianconi.

15) Properly filter out unsupported feature flags in macvlan driver,
    from Shannon Nelson.

16) Don't request loading the diag module for a protocol if the protocol
    itself is not even registered. From Xin Long.

17) If datagram connect fails in ipv6, make sure the socket state is
    consistent afterwards. From Paolo Abeni.

18) Use after free in qed driver, from Dan Carpenter.

19) If received ipv4 PMTU is less than the min pmtu, lock the mtu in the
    entry. From Sabrina Dubroca.

20) Fix sleep in atomic in tg3 driver, from Jonathan Toppins.

21) Fix vlan in vlan untagging in some situations, from Toshiaki Makita.

22) Fix double SKB free in genlmsg_mcast(). From Nicolas Dichtel.

23) Fix NULL derefs in error paths of tcf_*_init(), from Davide Caratti.

24) Unbalanced PM runtime calls in FEC driver, from Florian Fainelli.

25) Memory leak in gemini driver, from Igor Pylypiv.

26) IDR leaks in error paths of tcf_*_init() functions, from Davide
    Caratti.

27) Need to use GFP_ATOMIC in seg6_build_state(), from David Lebrun.

28) Missing dev_put() in error path of macsec_newlink(), from Dan
    Carpenter.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (201 commits)
  macsec: missing dev_put() on error in macsec_newlink()
  net: dsa: Fix functional dsa-loop dependency on FIXED_PHY
  hv_netvsc: common detach logic
  hv_netvsc: change GPAD teardown order on older versions
  hv_netvsc: use RCU to fix concurrent rx and queue changes
  hv_netvsc: disable NAPI before channel close
  net/ipv6: Handle onlink flag with multipath routes
  ppp: avoid loop in xmit recursion detection code
  ipv6: sr: fix NULL pointer dereference when setting encap source address
  ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
  net: aquantia: driver version bump
  net: aquantia: Implement pci shutdown callback
  net: aquantia: Allow live mac address changes
  net: aquantia: Add tx clean budget and valid budget handling logic
  net: aquantia: Change inefficient wait loop on fw data reads
  net: aquantia: Fix a regression with reset on old firmware
  net: aquantia: Fix hardware reset when SPI may rarely hangup
  s390/qeth: on channel error, reject further cmd requests
  s390/qeth: lock read device while queueing next buffer
  s390/qeth: when thread completes, wake up all waiters
  ...
2018-03-22 14:10:29 -07:00
Dave Airlie
f3924ae723 Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next
Changes this time mostly come down to:
- hook up the DRM GPU scheduler
- prep work for GC7000L support, to be completed in the next cycle

* 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux: (22 commits)
  drm/etnaviv: bump HW job limit to 4
  drm/etnaviv: etnaviv_sched: Staticize functions when possible
  drm/etnaviv: add PTA handling to MMUv2
  drm/etnaviv: add function to load the initial PTA state
  drm/etnaviv: handle security states
  drm/etnaviv: add security handling mode enum
  drm/etnaviv: add hardware database
  drm/etnaviv: add more minor features fields
  drm/etnaviv: update hardware headers from rnndb
  drm/etnaviv: add support for slave interface clock
  drm/etnaviv: split out and optimize MMU fault dumping
  drm/etnaviv: remove the need for a gpu-subsystem DT node
  dt-bindings: etnaviv: add slave interface clock
  drm/etnaviv: use correct format specifier for size_t
  drm/etnaviv: replace hangcheck with scheduler timeout
  drm/etnaviv: lock BOs after all other submit work is done
  drm/etnaviv: move dependency handling to scheduler
  drm/etnaviv: hook up DRM GPU scheduler
  drm/etnaviv: track fences by IDR instead of seqno
  drm/etnaviv: add missing major features field to debugfs
  ...
2018-03-23 06:16:51 +10:00
Subash Abhinov Kasiviswanathan
14452ca3b5 net: qualcomm: rmnet: Export mux_id and flags to netlink
Define new netlink attributes for rmnet mux_id and flags. These
flags / mux_id were earlier using vlan flags / id respectively.
The flag bits are also moved to uapi and are renamed with
prefix RMNET_FLAG_*.

Also add the rmnet policy to handle the new netlink attributes.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22 15:00:44 -04:00
GhantaKrishnamurthy MohanKrishna
872619d8cf tipc: step sk->sk_drops when rcv buffer is full
Currently when tipc is unable to queue a received message on a
socket, the message is rejected back to the sender with error
TIPC_ERR_OVERLOAD. However, the application on this socket
has no knowledge about these discards.

In this commit, we try to step the sk_drops counter when tipc
is unable to queue a received message. Export sk_drops
using tipc socket diagnostics.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22 14:43:37 -04:00