Commit Graph

507678 Commits

Author SHA1 Message Date
Petri Gynther
0034de4193 net: bcmgenet: add support for Hardware Filter Block
Add support for Hardware Filter Block (HFB) so that incoming Rx traffic
can be matched and directed to desired Rx queues.

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 22:04:17 -04:00
David S. Miller
70006af955 Merge branch 'ebpf_skb_fields'
Alexei Starovoitov says:

====================
bpf: allow eBPF access skb fields

V1->V2:
- refactored field access converter into common helper convert_skb_access()
  used in both classic and extended BPF
- added missing build_bug_on for field 'len'
- added comment to uapi/linux/bpf.h as suggested by Daniel
- dropped exposing 'ifindex' field for now

classic BPF has a way to access skb fields, whereas extended BPF didn't.
This patch introduces this ability.

Classic BPF can access fields via negative SKF_AD_OFF offset.
Positive bpf_ld_abs N is treated as load from packet, whereas
bpf_ld_abs -0x1000 + N is treated as skb fields access.
Many offsets were hard coded over years: SKF_AD_PROTOCOL, SKF_AD_PKTTYPE, etc.
The problem with this approach was that for every new field classic bpf
assembler had to be tweaked.

I've considered doing the same for extended, but for every new field LLVM
compiler would have to be modifed. Since it would need to add a new intrinsic.
It could be done with single intrinsic and magic offset or use of inline
assembler, but neither are clean from compiler backend point of view, since
they look like calls but shouldn't scratch caller-saved registers.

Another approach was to introduce a new helper functions like bpf_get_pkt_type()
for every field that we want to access, but that is equally ugly for kernel
and slow, since helpers are calls and they are slower then just loads.
In theory helper calls can be 'inlined' inside kernel into direct loads, but
since they were calls for user space, compiler would have to spill registers
around such calls anyway. Teaching compiler to treat such helpers differently
is even uglier.

They were few other ideas considered. At the end the best seems to be to
introduce a user accessible mirror of in-kernel sk_buff structure:

struct __sk_buff {
    __u32 len;
    __u32 pkt_type;
    __u32 mark;
    __u32 queue_mapping;
};

bpf programs will do:

int bpf_prog1(struct __sk_buff *skb)
{
    __u32 var = skb->pkt_type;

which will be compiled to bpf assembler as:

dst_reg = *(u32 *)(src_reg + 4) // 4 == offsetof(struct __sk_buff, pkt_type)

bpf verifier will check validity of access and will convert it to:

dst_reg = *(u8 *)(src_reg + offsetof(struct sk_buff, __pkt_type_offset))
dst_reg &= 7

since 'pkt_type' is a bitfield.

No new instructions added. LLVM doesn't need to be modified.
JITs don't change and verifier already knows when it accesses 'ctx' pointer.
The only thing needed was to convert user visible offset within __sk_buff
to kernel internal offset within sk_buff.
For 'len' and other fields conversion is trivial.
Converting 'pkt_type' takes 2 or 3 instructions depending on endianness.
More fields can be exposed by adding to the end of the 'struct __sk_buff'.
Like vlan_tci and others can be added later.

When pkt_type field is moved around, goes into different structure, removed or
its size changes, the function convert_skb_access() would need to updated and
it will cover both classic and extended.

Patch 2 updates examples to demonstrates how fields are accessed and
adds new tests for verifier, since it needs to detect a corner case when
attacker is using single bpf instruction in two branches with different
register types.

The 4 fields of __sk_buff are already exposed to user space via classic bpf and
I believe they're useful in extended as well.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 22:02:35 -04:00
Alexei Starovoitov
614cd3bd37 samples: bpf: add skb->field examples and tests
- modify sockex1 example to count number of bytes in outgoing packets
- modify sockex2 example to count number of bytes and packets per flow
- add 4 stress tests that exercise 'skb->field' code path of verifier

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 22:02:28 -04:00
Alexei Starovoitov
9bac3d6d54 bpf: allow extended BPF programs access skb fields
introduce user accessible mirror of in-kernel 'struct sk_buff':
struct __sk_buff {
    __u32 len;
    __u32 pkt_type;
    __u32 mark;
    __u32 queue_mapping;
};

bpf programs can do:

int bpf_prog(struct __sk_buff *skb)
{
    __u32 var = skb->pkt_type;

which will be compiled to bpf assembler as:

dst_reg = *(u32 *)(src_reg + 4) // 4 == offsetof(struct __sk_buff, pkt_type)

bpf verifier will check validity of access and will convert it to:

dst_reg = *(u8 *)(src_reg + offsetof(struct sk_buff, __pkt_type_offset))
dst_reg &= 7

since skb->pkt_type is a bitfield.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 22:02:28 -04:00
David S. Miller
a498cfe990 Merge branch 'ebpf_helpers'
Daniel Borkmann says:

====================
eBPF updates

Two small eBPF helper additions to better match up with ancillary
classic BPF functionality.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 21:57:30 -04:00
Daniel Borkmann
c04167ce2c ebpf: add helper for obtaining current processor id
This patch adds the possibility to obtain raw_smp_processor_id() in
eBPF. Currently, this is only possible in classic BPF where commit
da2033c282 ("filter: add SKF_AD_RXHASH and SKF_AD_CPU") has added
facilities for this.

Perhaps most importantly, this would also allow us to track per CPU
statistics with eBPF maps, or to implement a poor-man's per CPU data
structure through eBPF maps.

Example function proto-type looks like:

  u32 (*smp_processor_id)(void) = (void *)BPF_FUNC_get_smp_processor_id;

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 21:57:25 -04:00
Daniel Borkmann
03e69b508b ebpf: add prandom helper for packet sampling
This work is similar to commit 4cd3675ebf ("filter: added BPF
random opcode") and adds a possibility for packet sampling in eBPF.

Currently, this is only possible in classic BPF and useful to
combine sampling with f.e. packet sockets, possible also with tc.

Example function proto-type looks like:

  u32 (*prandom_u32)(void) = (void *)BPF_FUNC_get_prandom_u32;

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 21:57:25 -04:00
Linus Torvalds
06e5801b8c Linux 4.0-rc4 2015-03-15 17:38:20 -07:00
David S. Miller
1202882042 Merge branch 'gianfar-next'
Claudiu Manoil says:

====================
gianfar: ARM port driver updates (2/2)

The 2nd round of driver updates to make gianfar portable on ARM,
for the ARM based SoC that integrates eTSEC - "ls1021a".
The patches address the bulk of remaining endianess issues -
handling DMA fields (BD and FCB), and device tree properties.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 19:56:52 -04:00
Jingchang Lu
559176415c gianfar: Consider dts property endianess on handling
Use of_property_read*() to get arch endian consistent
property values. Do some refactoring in the process.

Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 19:56:47 -04:00
Claudiu Manoil
26eb9374f8 gianfar: Make FCB access endian safe
Use conversion macros to correctly access the BE
fields of the Rx and Tx Frame Control Block on LE CPUs.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 19:56:47 -04:00
Claudiu Manoil
a7312d5803 gianfar: Make BDs access endian safe
Use conversion macros to correctly access the BE
fields of the Rx and Tx Buffer Descriptors on LE CPUs.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 19:56:46 -04:00
Linus Torvalds
08352086de Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fix from Dave Airlie:
 "An oops snuck in in an -rc3 patch, this fixes it"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  [PATCH] drm/mm: Fix support 4 GiB and larger ranges
2015-03-15 15:20:09 -07:00
Linus Torvalds
1ee89c519a The clk fixes for 4.0-rc4 comprise three themes. First are the usual
driver fixes for new regressions since v3.19. Second are fixes to the
 common clock divider type caused by recent changes to how we round clock
 rates. This affects many clock drivers that use this common code.
 Finally there are fixes for drivers that improperly compared struct clk
 pointers (drivers must not deref these pointers). While some of these
 drivers have done this for a long time, this did not cause a problem
 until we started generating unique struct clk pointers for every
 consumer. A new function, clk_is_match was introduced to get these
 drivers working again and they are fixed up to no longer deref the
 pointers themselves.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clock framework fixes from Michael Turquette:
 "The clk fixes for 4.0-rc4 comprise three themes.

  First are the usual driver fixes for new regressions since v3.19.

  Second are fixes to the common clock divider type caused by recent
  changes to how we round clock rates.  This affects many clock drivers
  that use this common code.

  Finally there are fixes for drivers that improperly compared struct
  clk pointers (drivers must not deref these pointers).  While some of
  these drivers have done this for a long time, this did not cause a
  problem until we started generating unique struct clk pointers for
  every consumer.  A new function, clk_is_match was introduced to get
  these drivers working again and they are fixed up to no longer deref
  the pointers themselves"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  ASoC: kirkwood: fix struct clk pointer comparing
  ASoC: fsl_spdif: fix struct clk pointer comparing
  ARM: imx: fix struct clk pointer comparing
  clk: introduce clk_is_match
  clk: don't export static symbol
  clk: divider: fix calculation of initial best divider when rounding to closest
  clk: divider: fix selection of divider when rounding to closest
  clk: divider: fix calculation of maximal parent rate for a given divider
  clk: divider: return real rate instead of divider value
  clk: qcom: fix platform_no_drv_owner.cocci warnings
  clk: qcom: fix platform_no_drv_owner.cocci warnings
  clk: qcom: Add PLL4 vote clock
  clk: qcom: lcc-msm8960: Fix PLL rate detection
  clk: qcom: Fix slimbus n and m val offsets
  clk: ti: Fix FAPLL parent enable bit handling
2015-03-15 15:07:08 -07:00
Krzysztof Kolasa
046d669c62 [PATCH] drm/mm: Fix support 4 GiB and larger ranges
bad argument if(tmp)... in check_free_hole

fix oops: kernel BUG at drivers/gpu/drm/drm_mm.c:305!

[airlied: excellent, this was my task for today].

Signed-off-by: Krzysztof Kolasa <kkolasa@winsoft.pl>
Reviewed-by: Chris wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-03-16 06:28:50 +10:00
Linus Torvalds
6981e2af36 ARM: SoC fixes for 4.0-rc3
This is a rather unpleasantly large set of bug fixes for arm-soc,
 Most of them because of cross-tree dependencies for Exynos
 where we should have figured out the right path to merge things
 before the merge window, and then the maintainer being unable to
 sort things out in time during a business trip.
 
 The other changes contained here are the usual collection:
 
 MAINTAINERS file updates
  - Gregory Clement is now a co-maintainer for the legacy Marvell EBU
    platforms
  - A MAINTAINERS entry for the Freescale Vybrid platform that was
    added last year
  - Matt Porter no longer works as a maintainer on Broadcom SoCs
 
 Build-time issues
  - A compile-time error for at91
  - Several minor DT fixes on at91, imx, exynos, socfpga, and omap
  - The new digicolor platform was not correctly enabled at all
 
 Configuration issues
  - Two defconfig fix for regressions using USB on versatile
    express and on OMAP3
  - Enabling all 8 CPUs on Allwinner/SUNxi
  - Enabling the new STiH410 platform to be usable
 
 Bug fixes in platform code
  - A missing barrier for socfpga
  - Fixing LPDDR1 self-refresh mode on at91
  - Fixing RTC interrupt numbers on Exynos3250
  - Fixing a cache-coherency issues in CPU power-down
    on Exynos5
  - Multiple small OMAP power management fixes
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a rather unpleasantly large set of bug fixes for arm-soc, Most
  of them because of cross-tree dependencies for Exynos where we should
  have figured out the right path to merge things before the merge
  window, and then the maintainer being unable to sort things out in
  time during a business trip.

  The other changes contained here are the usual collection:

  MAINTAINERS file updates
   - Gregory Clement is now a co-maintainer for the legacy Marvell EBU
     platforms
   - A MAINTAINERS entry for the Freescale Vybrid platform that was
     added last year
   - Matt Porter no longer works as a maintainer on Broadcom SoCs

  Build-time issues
   - A compile-time error for at91
   - Several minor DT fixes on at91, imx, exynos, socfpga, and omap
   - The new digicolor platform was not correctly enabled at all

  Configuration issues
   - Two defconfig fix for regressions using USB on versatile express
     and on OMAP3
   - Enabling all 8 CPUs on Allwinner/SUNxi
   - Enabling the new STiH410 platform to be usable

  Bug fixes in platform code
   - A missing barrier for socfpga
   - Fixing LPDDR1 self-refresh mode on at91
   - Fixing RTC interrupt numbers on Exynos3250
   - Fixing a cache-coherency issues in CPU power-down on Exynos5
   - Multiple small OMAP power management fixes"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (69 commits)
  MAINTAINERS: Add myself as co-maintainer to the legacy support of the mvebu SoCs
  ARM: at91: pm_slowclock: fix the compilation error
  ARM: at91/dt: fix USB high-speed clock to select UTMI
  ARM: at91/dt: fix at91 udc compatible strings
  ARM: at91/dt: declare matrix node as a syscon device
  ARM: vexpress: update CONFIG_USB_ISP1760 option
  ARM: digicolor: add the machine directory to Makefile
  ARM: STi: Add STiH410 SoC support
  MAINTAINERS: add Freescale Vybrid SoC
  MAINTAINERS: Remove self as ARM mach-bcm co-maintainer
  ARM: imx6sl-evk: set swbst_reg as vbus's parent reg
  ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
  ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
  ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
  ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
  ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
  ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
  ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: OMAP5: fix polling intervals for thermal zones
  ...
2015-03-15 10:49:38 -07:00
Linus Torvalds
71c87bd062 irqchip fixes for v4.0
- armada-370-xp
    - Chained per-cpu interrupts
 
 - gic{,-v3,v3-its}
    - Various fixes for safer operation
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Merge tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux

Pull irqchip fixes from Jason Cooper:
 "armada-370-xp:
   - Chained per-cpu interrupts

  gic{,-v3,v3-its}"
   - Various fixes for safer operation"

* tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux:
  irqchip: gicv3-its: Support safe initialization
  irqchip: gicv3-its: Define macros for GITS_CTLR fields
  irqchip: gicv3-its: Add limitation to page order
  irqchip: gicv3-its: Use 64KB page as default granule
  irqchip: gicv3-its: Zero itt before handling to hardware
  irqchip: gic-v3: Fix out of bounds access to cpu_logical_map
  irqchip: gic: Fix unsafe locking reported by lockdep
  irqchip: gicv3-its: Fix unsafe locking reported by lockdep
  irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration
  irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID
  irqchip: gicv3-its: Fix ITS CPU init
  irqchip: armada-370-xp: Fix chained per-cpu interrupts
2015-03-15 10:41:30 -07:00
Forest Wilkinson
9b028649b9 HID: tivo: enable all buttons on the TiVo Slide Pro remote
The linux kernel has supported the TiVo Slide remote control for some time, but
does not recognize the USB ID of the newer Slide Pro. This patch adds the
missing data structures so the newer remote will be recognized by the driver,
thereby allowing the TiVo, LiveTV, and Thumbs Up/Down buttons to be
mapped with a hwdb file.

Signed-off-by: Forest Wilkinson <web11.forest@tibit.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-15 10:04:27 -04:00
Marcel Holtmann
4f0f155cea Bluetooth: Add simple version of Read Local OOB Extended Data command
This adds support for the simplest possible version of Read Local OOB
Extended Data management command. It includes all mandatory fields,
but none of the actual pairing related ones.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 10:05:29 +02:00
Marcel Holtmann
1471aae0d0 Bluetooth: Add defines for LE Bluetooth Device Address and LE Role
The OOB data requires to include LE Bluetooth Device Address and LE Role
and so add the type constants for these fields.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 10:05:28 +02:00
Marcel Holtmann
bea41609de Bluetooth: Move eir_append_data function to a different location
The eir_append_data helper function is needed for generating the
extended local OOB data fields. So move it up into the right location.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 10:05:26 +02:00
Marcel Holtmann
d3d5305bfd Bluetooth: Add simple version of Read Advertising Features command
This adds support for the simplest possible version of Read Advertising
Features management command. It allows basic testing of the interface.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 10:03:41 +02:00
Marcel Holtmann
a958452aa4 Bluetooth: Use BIT(n) macro instead of manually encoding (1 << n)
The flags for the management command table used manual encoding of
bits in the form of (1 << n). It is however preferred to use BIT(n)
macro instead.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 10:00:15 +02:00
Marcel Holtmann
f6b7712eb6 Bluetooth: Send global configuration updates to all management users
Changes to the global configuration updates like settings, class of
device, name etc. can be received by every user. They are allowed to
read them in the first place so provide the updates via events as
well. Otherwise untrusted users start polling for updates and that
is not a desired behavior.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:59:39 +02:00
Marcel Holtmann
1195fbb8d0 Bluetooth: Open management interface for untrusted users
Until now the management interface was restricted to CAP_NET_ADMIN. With
this change every user can open the management socket. However the list
of commands is heavily restricted to getting basic information about the
attached controllers. No access for configuration or other operation is
provided. The events are also limited. This is done so that no keys can
leak or untrusted users can mess with the Bluetooth configuration.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:59:18 +02:00
Marcel Holtmann
c927a10487 Bluetooth: Add support for trust verification of management commands
Check the required trust level of each management command with the trust
level of the management socket. If it does not match up, then return the
newly introduced permission denied error.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:58:56 +02:00
Marcel Holtmann
7aea8616cd Bluetooth: Remove unneeded initializer for management command table
The flags field for the management command table will be always
initialized to zero and thus no need to do that manually.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:58:51 +02:00
Marcel Holtmann
c91041dc4e Bluetooth: Add support for untrusted access to management commands
Some management commands are safe to be accessed from any user without
special permissions. First step for allowing access to any of these
commands from untrusted application is to mark them accordingly.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:57:35 +02:00
Marcel Holtmann
c85be545ea Bluetooth: Add hci_sock_test_flag helper function
The management interface will need access to the socket flags and so
provide a helper function for checking them.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:57:31 +02:00
Marcel Holtmann
c08b1a1dba Bluetooth: Consolidate socket channel sending function back into one
With the introduction of trusted socket flag for control and monitor
channels, it is now possible to use a single function for sending
packets to these sockets. And with that consolidate the handling.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:56:41 +02:00
Marcel Holtmann
50ebc055fa Bluetooth: Introduce trusted flag for management control sockets
Providing a global trusted flag for management control sockets provides
an easy way for identifying sockets and imposing restriction on it. For
now all management sockets are trusted since they require CAP_NET_ADMIN.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:56:00 +02:00
Marcel Holtmann
96f1474af0 Bluetooth: Add support for extended index management command
The Read Extended Contoller Index List command can be used for
retrieving the complete list of local available controllers. This
included configured, unconfigured and also AMP controllers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:55:51 +02:00
Marcel Holtmann
ced85549c3 Bluetooth: Add support for extended index management events
This introduces support for using Extended Index Added and Extended
Index Removed events. These events contain the controller type and
also the hardware bus information from the driver.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:53:08 +02:00
Marcel Holtmann
f920733885 Bluetooth: Use special function to send filter management index events
For sending Index Added, Index Removed, Unconfigured Index Added and
Unconfigured Index Removed managment events the new helper functions
allows taking into account if these events are enabled for a certain
management socket or not.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:47:51 +02:00
Marcel Holtmann
17711c6291 Bluetooth: Provide hci_send_to_flagged_channel helper function
The hci_send_to_flagged_channel helper function can be used to send
packets to all channels that have a certain HCI socket flag set.

This is especially useful for managment events that are limited to
sockets that have first enabled certain functionality. This allows
for filtering of events without confusing existing users.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:46:41 +02:00
Marcel Holtmann
6befc6445f Bluetooth: Add flags field and setting function for HCI sockets
To filter out certain actions for certain HCI sockets introcuce a flags
field that allows to configure specific settings on individual sockets.

Since the hci_pinfo structure is private in hci_sock.c, provide helper
functions for setting and clearing a given flag.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-15 09:45:39 +02:00
David S. Miller
5a2f78dd51 Merge branch 'rhashtable-next'
Herbert Xu says:

====================
rhashtable: Fixes + cleanups + preparation for multiple rehash

Patch 1 fixes the walker so that it behaves properly even during
a resize.

Patch 2-3 are cleanups.

Patch 4-6 lays some ground work for the upcoming multiple rehashing.

This revision fixes the warning coming from the bucket_table->size
downsize and improves its changelog.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:46 -04:00
Herbert Xu
c4db8848af rhashtable: Move future_tbl into struct bucket_table
This patch moves future_tbl to open up the possibility of having
multiple rehashes on the same table.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Herbert Xu
63d512d0cf rhashtable: Add rehash counter to bucket_table
This patch adds a rehash counter to bucket_table to indicate
the last bucket that has been rehashed.  This serves two purposes:

1. Any bucket that has been rehashed can never gain a new object.
2. If the rehash counter reaches the size of the table, the table
will forever remain empty.

This patch also downsizes bucket_table->size to an unsigned int
since we do not support sizes greater than 32 bits yet.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Herbert Xu
9d901bc051 rhashtable: Free bucket tables asynchronously after rehash
There is in fact no need to wait for an RCU grace period in the
rehash function, since all insertions are guaranteed to go into
the new table through spin locks.

This patch uses call_rcu to free the old/rehashed table at our
leisure.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Herbert Xu
5269b53da4 rhashtable: Move seed init into bucket_table_alloc
It seems that I have already made every rehash redo the random
seed even though my commit message indicated otherwise :)

Since we have already taken that step, this patch goes one step
further and moves the seed initialisation into bucket_table_alloc.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Herbert Xu
8f2484bdb5 rhashtable: Use SINGLE_DEPTH_NESTING
We only nest one level deep there is no need to roll our own
subclasses.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Herbert Xu
eddee5ba34 rhashtable: Fix walker behaviour during rehash
Previously whenever the walker encountered a resize it simply
snaps back to the beginning and starts again.  However, this only
works if the rehash started and completed while the walker was
idle.

If the walker attempts to restart while the rehash is still ongoing,
we may miss objects that we shouldn't have.

This patch fixes this by making the walker walk the old table
followed by the new table just like all other readers.  If a
rehash is detected we will still signal our caller of the fact
so they can prepare for duplicates but we will simply continue
the walk onto the new table after the old one is finished either
by us or by the rehasher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-15 01:35:34 -04:00
Jason Cooper
aaa95f7456 Merge branch 'irqchip/urgent-gic' into irqchip/urgent 2015-03-15 01:41:26 +00:00
Florian Fainelli
96026d057a net: dsa: do not use slave MII bus for fixed PHYs
Commit cd28a1a9ba ("net: dsa: fully divert PHY reads/writes if
requested") introduced a check for particular PHYs that need to be
accessed using the slave MII bus created by DSA, but this check was too
inclusive. This would prevent fixed PHYs from being successfully
registered because those should not go through the slave MII bus created
by DSA.

Make sure we check that the PHY is not a fixed PHY to prevent that from
happening.

Fixes: cd28a1a9ba ("net: dsa: fully divert PHY reads/writes if requested")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-14 19:16:44 -04:00
Venkat Venkatsubra
4c906c2798 bridge: reset bridge mtu after deleting an interface
On adding an interface br_add_if() sets the MTU to the min of
all the interfaces. Do the same thing on removing an interface too
in br_del_if.

Signed-off-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-14 19:12:38 -04:00
Linus Torvalds
7cd9beb338 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Misc i915, vmwgfx and radeon fixes along with a fix for one of those
  recursive sleep mutex debug cases in the mst code"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/vmwgfx: Fix an issue with the device losing its irq line on module unload
  drm/vmwgfx: Correctly NULLify dma buffer pointer on failure
  drm/vmwgfx: Reorder device takedown somewhat
  drm/vmwgfx: Fix a couple of lock dependency violations
  drm/radeon: drop setting UPLL to sleep mode
  drm/radeon: fix wait to actually occur after the signaling callback
  drm/i915: Prevent TLB error on first execution on SNB
  drm/i915: Do both mt and gen6 style forcewake reset on ivb probe
  drm/i915: Make WAIT_IOCTL negative timeouts be indefinite again
  drm/i915: use in_interrupt() not in_irq() to check context
  drm/mst: fix recursive sleep warning on qlock
  drm: Don't assign fbs for universal cursor support to files
2015-03-14 14:54:25 -07:00
Linus Torvalds
60b3e7bd6a SCSI fixes on 20150314
This is a simple fix for a domain revalidation crash which has recently turned
 up in the libsas code (applies to mvsas, isc and aic94xx).
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "This is a simple fix for a domain revalidation crash which has
  recently turned up in the libsas code (applies to mvsas, isc and
  aic94xx)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  libsas: Fix Kernel Crash in smp_execute_task
2015-03-14 14:23:50 -07:00
David S. Miller
316ad4beec Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-03-13

This series contains updates to ixgbe and ixgbevf.

Don adds additional support for X550 MAC types, which require additional
steps around enabling and disabling Rx.  Also cleans up variable type
inconsistency.

I provide a patch to allow relaxed ordering to be enabled on SPARC
architectures.  Also cleans up ixgbevf whitespace and code comments to
align the driver with networking coding standard.  Lastly cleaned up
uses of memcpy() where ether_addr_copy() could have been used.

Alex removes some dead code in the ixgbe cleanup patch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-14 15:08:02 -04:00
David S. Miller
6922022af5 Merge branch 'listener_refactor_part_9'
Eric Dumazet says:

====================
inet: tcp listener refactoring, part 9

This preliminary work pushes socket convergence a bit more:

1) request sock ir_iif is universally set

2) inet_diag can use common helpers to reduce LOC
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-14 15:05:15 -04:00