Commit Graph

481521 Commits

Author SHA1 Message Date
Ido Shamay 1ab25f86c4 net/mlx4_en: Add __GFP_COLD gfp flags in alloc_pages
Needed in order to get cache cold pages (L3 flushed) for HW scatter.

Otherwise memory may flush those entries when the packet comes from
PCI, causing back pressure resulting in BW decrease.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:28:13 -05:00
Ido Shamay 5f6e980080 net/mlx4_en: Remove RX buffers alignment to IP_ALIGN
When IP_ALIGN has a non zero value, hardware will write to a non aligned
address. The only reader from this address is when copying the header
from the first frag into the linear buffer (further access to the IP
address will be from the linear buffer, in which the headers are
aligned). Since the penalty of non align access by the hardware is
greater than the software memcpy, changing the frag_align to always be 0.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:28:13 -05:00
Amir Vadai 0a98455666 net/mlx4_core: Protect port type setting by mutex
We need to protect set_port_type() for concurrency, as the sysfs code could
call it from mutliple contexts in parallel.

The port_mutex is not enough because we need to protect from concurrent
modification of 'info' and stopping of the port sensing work.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:28:13 -05:00
Saeed Mahameed 6e80669998 net/mlx4_core: Prevent VF from changing port configuration
Added wrapper to the ACCESS_REG command for handling guest HW
registers access, preventing write operations, but do allow reads.

This will prevent SRIOV guests to change port PTYS configuration,
such as speed/advertised link modes.

Fixes: adbc7ac5c1 ('net/mlx4_core: Introduce ACCESS_REG CMD [...]')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:28:13 -05:00
Eric Dumazet d75b1ade56 net: less interrupt masking in NAPI
net_rx_action() can mask irqs a single time to transfert sd->poll_list
into a private list, for a very short duration.

Then, napi_complete() can avoid masking irqs again,
and net_rx_action() only needs to mask irq again in slow path.

This patch removes 2 couples of irq mask/unmask per typical NAPI run,
more if multiple napi were triggered.

Note this also allows to give control back to caller (do_softirq())
more often, so that other softirq handlers can be called a bit earlier,
or ksoftirqd can be wakeup earlier under pressure.

This was developed while testing an alternative to RX interrupt
mitigation to reduce latencies while keeping or improving GRO
aggregation on fast NIC.

Idea is to test napi->gro_list at the end of a napi->poll() and
reschedule one NAPI poll, but after servicing a full round of
softirqs (timers, TX, rcu, ...). This will be allowed only if softirq
is currently serviced by idle task or ksoftirqd, and resched not needed.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:25:09 -05:00
Eric Dumazet 4cdb1e2e3d net: shrink struct softnet_data
flow_limit in struct softnet_data is only read from local cpu
and can be moved to fill a hole, reducing softnet_data size by
64 bytes on x86_64

While we are at it, move output_queue, output_queue_tailp and
completion_queue, so that rx / tx paths touch a single cache line.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:25:08 -05:00
Guenter Roeck c1207c049b netfilter: nft_reject_bridge: Fix powerpc build error
Fix:
net/bridge/netfilter/nft_reject_bridge.c:
In function 'nft_reject_br_send_v6_unreach':
net/bridge/netfilter/nft_reject_bridge.c:240:3:
	error: implicit declaration of function 'csum_ipv6_magic'
   csum_ipv6_magic(&nip6h->saddr, &nip6h->daddr,
   ^
make[3]: *** [net/bridge/netfilter/nft_reject_bridge.o] Error 1

Seen with powerpc:allmodconfig.

Fixes: 523b929d54 ("netfilter: nft_reject_bridge: don't use IP stack to reject traffic")
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 12:12:34 -05:00
Mitch Williams 2089ad03b2 i40e: properly parse MDET registers
Fix a few problems with our parsing of the MDET registers:
* Queue IDs are longer than 8 bits
* Queue IDs are absolute for the device and the base queue must be
  subtracted out.
* VF IDs are longer than 8 bits
* Use the MASK define to mask the event value, instead of the SHIFT
  define.

Change-ID: I3dc7237f480c02e1192a2a8ea782f8a02ab2a8b7
Reported-by: Marc Neustadter <marc.neustadter@intel.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 04:35:35 -08:00
Mitch Williams 7a28d8857d i40e: configure VM ID in qtx_ctl
We must insert the VSI ID in the QTX_CTL register when
configuring queues for VMDQ VSIs.

Change-ID: Iedfe36bd42ca0adc90a7cc2b7cf04795a98f4761
Reported-by: Marc Neustadter <marc.neustadter@intel.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 04:19:28 -08:00
Shannon Nelson 5b5faa434a i40e: enable debug earlier
Check the debug module parameter earlier to be able to catch the early
configuration phase adminq messages.

Change-ID: Ic84fabd72393489bbf96042de770790a80fd8468
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 04:11:51 -08:00
Shannon Nelson 049a2be828 i40e: better wording for resource tracking errors
Tweak and homogenize the error reporting for get_lump() resource
tracking errors.

Change-ID: I11330161cc6ad8d04371c499c63071c816171c3b
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 04:01:15 -08:00
Shannon Nelson c135b0de9b i40e: scale msix vector use when more cores than vectors
When there are more cores than vectors available to the PF, scale back
the LAN msix usage to force queue/vector sharing and leave some vectors
for Flow Director, VMDq, etc.

Change-ID: Ie0317732eb85ad8d851d7da7d9af86b1bf8c21ad
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 03:51:23 -08:00
Shannon Nelson 7204a785e7 i40e: remove debugfs dump stats
The debugfs dump stats wasn't being kept up-to-date, was redundant with
the ethtool output, and didn't offer any useful additional info.  Rather
than continue trying to keep them aligned, just remove the debugfs command.

Change-ID: Id130ed9aef01c6369ab662c7b4c5ec5b1dbc5b40
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <Jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 03:35:41 -08:00
Jesse Brandeburg a282babcfd i40e: avoid disable of interrupt when changing ITR
The call to irq_dynamic_disable was turning off the interrupt completely
when trying to set ITR to 0 (for lowest moderation).  Just remove the
call as setting the values to 0 later in this function will suffice.

Change-ID: I47caf1ecbe65653cf63ec833db93094cd83fd84d
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-By: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 02:13:57 -08:00
Paul M Stillwell Jr 1ac1e7643c i40evf: Add support for 10G base T parts
Add 10G-Base-T support in i40evf.

Change-ID: I98a1c3138d7d6572fe7903a7c1c4692cae3260d5
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 01:38:41 -08:00
Mitch Williams 320684cd53 i40e: fix link checking logic
If the interface is closed, but VFs exist, current code will spam all
the VFs with link messages every second. This is because the link event
code was looking at netif_carrier_ok() without checking to see if the
interface was actually open.

Refactor the logic to only check the carrier state if the interface is
actually open. This allows link changes to be reported correctly without
spamming the VFs.

Change-ID: If136e79bb3820d21ea4e39e332e8a9604efc2b2a
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 01:31:21 -08:00
Mitch Williams 7bdd6f7487 i40evf: properly handle multiple AQ messages
When we receive an admin queue message, the msg_size field in the event
struct gets overwritten. Because of this, we need to reinit the field
each time we go through the loop. Without this we may receive truncated
messages due to the firmware thinking we have insufficient buffer size.

Change-ID: I21dcca5114d91365d731169965ce3ffec0e4a190
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 01:23:24 -08:00
Akeem G Abodunrin 1790ed0c65 i40e: Add condition to enter fdir flush and reinit
When FD_SB/ATR are not enabled, do not allow flow director flush
and reinit.

Change-ID: Iafe261c1862992981615815551abd1ed9fada0a8
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Patrick Lu <patrick.lu@intel.com>
Tested-by: <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-11-03 01:15:41 -08:00
Linus Walleij d52fdbb735 smc91x: retrieve IRQ and trigger flags in a modern way
The SMC91x is written to explicitly look up the IRQ resource
from the platform device and extract the IRQ and flags, however
the platform_get_irq() does additional things, like call
of_irq_get() in the device tree case, which will translate
the IRQ using the irqdomain and defer the probe if the
IRQ host cannot be found.

As we're not looking up the resource, this will not retrieve
the IRQ flags, but that is better done using
irqd_get_trigger_type(), as the trigger is what the driver
wants to modify. We take care to preserve the semantics that
will make the trigger type provided from the resource
override any local specifier.

Tested on the Nomadik NHK15 which has its SMC91x IRQ line
connected to a STMPE2401 GPIO expander on I2C.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 17:04:20 -04:00
Chen Gang 1db3ddff16 drivers: net: ethernet: xilinx: xilinx_emaclite: Compatible with 'xlnx, xps-ethernetlite-2.00.b' for QEMU using
When use current latest upstream qemu (current version: 2.1.2), need let
driver compatible with 'xlnx,xps-ethernetlite-2.00.b', or can not find
net device in microblaze qemu. Related QEMU commands under fedora 20:

  yum install libvirt
  yum install tunctl
  tunctl -b
  ip link set tap0 up
  brctl addif virbr0 tap0
  ./microblaze-softmmu/qemu-system-microblaze -M petalogix-s3adsp1800 \
    -kernel ../linux-stable.microblaze/arch/microblaze/boot/linux.bin \
    -no-reboot -append "console=ttyUL0,115200 doreboot" -nographic \
    -net nic,vlan=0,model=xlnx.xps-ethernetlite,macaddr=00:16:35:AF:94:00 \
    -net tap,vlan=0,ifname=tap0,script=no,downscript=no

  in microblaze qemu bash (guest machine):

    ifconfig eth0 add 192.168.122.2 netmask 255.255.255.0
    ifconfig eth0 up

After add this patch, can find the device, and can be used by 'telnetd'
(need cross-build busybox with glibc for it), then outside can telnet to
it without password.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 17:03:12 -04:00
David S. Miller 1868855798 Merge branch 'systemport-net'
Florian Fainelli says:

====================
net: systemport: TX dma fixes

This patch series contains two fixes for our transmit path, first one
is a pretty nasty one since we were not allocating a large enough
dma coherent pool for our transmit descriptors, which would work most of the
time, since allocations are contiguous and we could have.

Second patch fixes a less frequent, though highly likley crash when using
CMA allocations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 15:14:07 -04:00
Florian Fainelli 914adb55af net: systemport: do not crash freeing an unitialized TX ring
Callers of bcm_sysport_init_tx_ring() can currently fail, and will
always call bcm_sysport_fini_tx_ring() in a loop ending at the number of
TX queues (32) without checking if the TX ring was successfully
initialized or not.

Update bcm_sysport_fini_tx_ring() to return early and avoid a crash
de-referencing ring->cbs if the TX ring was not initialized, since
ring->cbs is the last part of the initialization done by
bcm_sysport_init_tx_ring() that could fail.

Fixes: 80105befdb ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 15:13:56 -04:00
Florian Fainelli 3e8fc38c21 net: systemport: fix DMA allocation/freeing sizes
We should not be allocating a single byte of DMA coherent memory, but
instead a full-sized struct dma_desc (8 bytes).

Fixes: 80105befdb ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 15:13:56 -04:00
Sudip Mukherjee 437374735c net: mvpp2: fix possible memory leak
we are allocating memory using kzalloc for struct mvpp2_prs_entry,
but later when we are getting error we were just returning the error
value without releasing the memory.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 15:11:50 -04:00
David S. Miller 55b42b5ca2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/phy/marvell.c

Simple overlapping changes in drivers/net/phy/marvell.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 14:53:27 -04:00
David S. Miller ec1f127602 sunhme: Add DMA mapping error checks.
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-01 00:23:46 -04:00
Linus Torvalds 9f935675d4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "A bunch of fixes for minor defects reported by Coverity, a few driver
  fixups and revert of i8042.nomux change so that we are once again
  enable active MUX mode if box claims to support it"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Revert "Input: i8042 - disable active multiplexing by default"
  Input: altera_ps2 - use correct type for irq return value
  Input: altera_ps2 - write to correct register when disabling interrupts
  Input: max77693-haptic - fix potential overflow
  Input: psmouse - remove unneeded check in psmouse_reconnect()
  Input: vsxxxaa - fix code dropping bytes from queue
  Input: ims-pcu - fix dead code in ims_pcu_ofn_reg_addr_store()
  Input: opencores-kbd - fix error handling
  Input: wm97xx - adapt parameters to tosa touchscreen.
  Input: i8042 - quirks for Fujitsu Lifebook A544 and Lifebook AH544
  Input: stmpe-keypad - fix valid key line bitmask
  Input: soc_button_array - update calls to gpiod_get*()
2014-10-31 19:51:11 -07:00
Linus Torvalds ab01f963de ACPI and power management fixes for 3.18-rc3
- Fix a crash on r8a7791/koelsch during resume from system suspend
    caused by a recent cpufreq-dt commit (Geert Uytterhoeven).
 
  - Fix an MFD enumeration problem introduced by a recent commit
    adding ACPI support to the MFD subsystem that exposed a weakness
    in the ACPI core causing ACPI enumeration to be applied to all
    devices associated with one ACPI companion object, although it
    should be used for one of them only (Mika Westerberg).
 
  - Fix an ACPI EC regression introduced during the 3.17 cycle
    causing some Samsung laptops to misbehave as a result of a
    workaround targeted at some Acer machines.  That includes
    a revert of a commit that went too far and a quirk for the
    Acer machines in question.  From Lv Zheng.
 
  - Fix a regression in the system suspend error code path introduced
    during the 3.15 cycle that causes it to fail to take errors from
    asychronous execution of "late" suspend callbacks into account
    (Imre Deak).
 
  - Fix a long-standing bug in the hibernation resume error code path
    that fails to roll back everything correcty on "freeze" callback
    errors and leaves some devices in a "suspended" state causing more
    breakage to happen subsequently (Imre Deak).
 
  - Make the cpufreq-dt driver disable operation performance points
    that are not supported by the VR connected to the CPU voltage
    plane with acceptable tolerance instead of constantly failing
    voltage scaling later on (Lucas Stach).
 
 /
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Merge tag 'pm+acpi-3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are fixes received after my previous pull request plus one that
  has been in the works for quite a while, but its previous version
  caused problems to happen, so it's been deferred till now.

  Fixed are two recent regressions (MFD enumeration and cpufreq-dt),
  ACPI EC regression introduced in 3.17, system suspend error code path
  regression introduced in 3.15, an older bug related to recovery from
  failing resume from hibernation and a cpufreq-dt driver issue related
  to operation performance points.

  Specifics:

   - Fix a crash on r8a7791/koelsch during resume from system suspend
     caused by a recent cpufreq-dt commit (Geert Uytterhoeven).

   - Fix an MFD enumeration problem introduced by a recent commit adding
     ACPI support to the MFD subsystem that exposed a weakness in the
     ACPI core causing ACPI enumeration to be applied to all devices
     associated with one ACPI companion object, although it should be
     used for one of them only (Mika Westerberg).

   - Fix an ACPI EC regression introduced during the 3.17 cycle causing
     some Samsung laptops to misbehave as a result of a workaround
     targeted at some Acer machines.  That includes a revert of a commit
     that went too far and a quirk for the Acer machines in question.
     From Lv Zheng.

   - Fix a regression in the system suspend error code path introduced
     during the 3.15 cycle that causes it to fail to take errors from
     asychronous execution of "late" suspend callbacks into account
     (Imre Deak).

   - Fix a long-standing bug in the hibernation resume error code path
     that fails to roll back everything correcty on "freeze" callback
     errors and leaves some devices in a "suspended" state causing more
     breakage to happen subsequently (Imre Deak).

   - Make the cpufreq-dt driver disable operation performance points
     that are not supported by the VR connected to the CPU voltage plane
     with acceptable tolerance instead of constantly failing voltage
     scaling later on (Lucas Stach)"

* tag 'pm+acpi-3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / EC: Fix regression due to conflicting firmware behavior between Samsung and Acer.
  Revert "ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC"
  cpufreq: cpufreq-dt: Restore default cpumask_setall(policy->cpus)
  PM / Sleep: fix recovery during resuming from hibernation
  PM / Sleep: fix async suspend_late/freeze_late error handling
  ACPI: Use ACPI companion to match only the first physical device
  cpufreq: cpufreq-dt: disable unsupported OPPs
2014-10-31 19:08:25 -07:00
Linus Torvalds 08da742ef9 PCI updates for v3.18:
Sysfs
     - Fix "enable" filename change (Greg Kroah-Hartman)
 
   PCI device hotplug
     - Revert duplicate merge (Kamal Mostafa)
 
   Freescale i.MX6
     - Wait for clocks to stabilize after ref_en (Richard Zhu)
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Merge tag 'pci-v3.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "These changes, intended for v3.18, fix:

  Sysfs
    - Fix "enable" filename change (Greg Kroah-Hartman)

      An unintentional sysfs filename change in commit 5136b2da77
      ("PCI: convert bus code to use dev_groups"), which appeared in
      v3.13, changed "enable" to "enabled", and this changes it back.

      Old users of "enable" are currently broken and will be helped by
      this change.  Anything that started to use "enabled" after v3.13
      will be broken by this change.  If necessary, we can add a symlink
      to make both work, but this patch doesn't do that.

  PCI device hotplug
    - Revert duplicate merge (Kamal Mostafa)

      A mistaken duplicate merge that added a check twice.  Nothing's
      broken; this just removes the unnecessary code.

  Freescale i.MX6
    - Wait for clocks to stabilize after ref_en (Richard Zhu)

      An i.MX6 clock problem that prevents mx6 nitrogen boards from booting"

* tag 'pci-v3.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Rename sysfs 'enabled' file back to 'enable'
  PCI: imx6: Wait for clocks to stabilize after ref_en
  Revert duplicate "PCI: pciehp: Prevent NULL dereference during probe"
2014-10-31 18:48:29 -07:00
Andy Lutomirski 653bc77af6 x86_64, entry: Fix out of bounds read on sysenter
Rusty noticed a Really Bad Bug (tm) in my NT fix.  The entry code
reads out of bounds, causing the NT fix to be unreliable.  But, and
this is much, much worse, if your stack is somehow just below the
top of the direct map (or a hole), you read out of bounds and crash.

Excerpt from the crash:

[    1.129513] RSP: 0018:ffff88001da4bf88  EFLAGS: 00010296

  2b:*    f7 84 24 90 00 00 00     testl  $0x4000,0x90(%rsp)

That read is deterministically above the top of the stack.  I
thought I even single-stepped through this code when I wrote it to
check the offset, but I clearly screwed it up.

Fixes: 8c7aa698ba ("x86_64, entry: Filter RFLAGS.NT on entry from userspace")
Reported-by: Rusty Russell <rusty@ozlabs.org>
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-31 18:47:09 -07:00
Linus Torvalds 32e8fd2f8e A set of miscellaneous ext4 bug fixes for 3.18.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 bugfixes from Ted Ts'o:
 "A set of miscellaneous ext4 bug fixes for 3.18"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: make ext4_ext_convert_to_initialized() return proper number of blocks
  ext4: bail early when clearing inode journal flag fails
  ext4: bail out from make_indexed_dir() on first error
  jbd2: use a better hash function for the revoke table
  ext4: prevent bugon on race between write/fcntl
  ext4: remove extent status procfs files if journal load fails
  ext4: disallow changing journal_csum option during remount
  ext4: enable journal checksum when metadata checksum feature enabled
  ext4: fix oops when loading block bitmap failed
  ext4: fix overflow when updating superblock backups after resize
2014-10-31 16:22:29 -07:00
Linus Torvalds e2488ab6ab Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota and ext3 fixes from Jan Kara.

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fs, jbd: use a more generic hash function
  quota: Properly return errors from dquot_writeback_dquots()
  ext3: Don't check quota format when there are no quota files
2014-10-31 16:18:47 -07:00
Linus Torvalds 89453379aa Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "A bit has accumulated, but it's been a week or so since my last batch
  of post-merge-window fixes, so...

   1) Missing module license in netfilter reject module, from Pablo.
      Lots of people ran into this.

   2) Off by one in mac80211 baserate calculation, from Karl Beldan.

   3) Fix incorrect return value from ax88179_178a driver's set_mac_addr
      op, which broke use of it with bonding.  From Ian Morgan.

   4) Checking of skb_gso_segment()'s return value was not all
      encompassing, it can return an SKB pointer, a pointer error, or
      NULL.  Fix from Florian Westphal.

      This is crummy, and longer term will be fixed to just return error
      pointers or a real SKB.

   6) Encapsulation offloads not being handled by
      skb_gso_transport_seglen().  From Florian Westphal.

   7) Fix deadlock in TIPC stack, from Ying Xue.

   8) Fix performance regression from using rhashtable for netlink
      sockets.  The problem was the synchronize_net() invoked for every
      socket destroy.  From Thomas Graf.

   9) Fix bug in eBPF verifier, and remove the strong dependency of BPF
      on NET.  From Alexei Starovoitov.

  10) In qdisc_create(), use the correct interface to allocate
      ->cpu_bstats, otherwise the u64_stats_sync member isn't
      initialized properly.  From Sabrina Dubroca.

  11) Off by one in ip_set_nfnl_get_byindex(), from Dan Carpenter.

  12) nf_tables_newchain() was erroneously expecting error pointers from
      netdev_alloc_pcpu_stats().  It only returna a valid pointer or
      NULL.  From Sabrina Dubroca.

  13) Fix use-after-free in _decode_session6(), from Li RongQing.

  14) When we set the TX flow hash on a socket, we mistakenly do so
      before we've nailed down the final source port.  Move the setting
      deeper to fix this.  From Sathya Perla.

  15) NAPI budget accounting in amd-xgbe driver was counting descriptors
      instead of full packets, fix from Thomas Lendacky.

  16) Fix total_data_buflen calculation in hyperv driver, from Haiyang
      Zhang.

  17) Fix bcma driver build with OF_ADDRESS disabled, from Hauke
      Mehrtens.

  18) Fix mis-use of per-cpu memory in TCP md5 code.  The problem is
      that something that ends up being vmalloc memory can't be passed
      to the crypto hash routines via scatter-gather lists.  From Eric
      Dumazet.

  19) Fix regression in promiscuous mode enabling in cdc-ether, from
      Olivier Blin.

  20) Bucket eviction and frag entry killing can race with eachother,
      causing an unlink of the object from the wrong list.  Fix from
      Nikolay Aleksandrov.

  21) Missing initialization of spinlock in cxgb4 driver, from Anish
      Bhatt.

  22) Do not cache ipv4 routing failures, otherwise if the sysctl for
      forwarding is subsequently enabled this won't be seen.  From
      Nicolas Cavallari"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (131 commits)
  drivers: net: cpsw: Support ALLMULTI and fix IFF_PROMISC in switch mode
  drivers: net: cpsw: Fix broken loop condition in switch mode
  net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0
  stmmac: pci: set default of the filter bins
  net: smc91x: Fix gpios for device tree based booting
  mpls: Allow mpls_gso to be built as module
  mpls: Fix mpls_gso handler.
  r8152: stop submitting intr for -EPROTO
  netfilter: nft_reject_bridge: restrict reject to prerouting and input
  netfilter: nft_reject_bridge: don't use IP stack to reject traffic
  netfilter: nf_reject_ipv6: split nf_send_reset6() in smaller functions
  netfilter: nf_reject_ipv4: split nf_send_reset() in smaller functions
  netfilter: nf_tables_bridge: update hook_mask to allow {pre,post}routing
  drivers/net: macvtap and tun depend on INET
  drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets
  drivers/net: Disable UFO through virtio
  net: skb_fclone_busy() needs to detect orphaned skb
  gre: Use inner mac length when computing tunnel length
  mlx4: Avoid leaking steering rules on flow creation error flow
  net/mlx4_en: Don't attempt to TX offload the outer UDP checksum for VXLAN
  ...
2014-10-31 15:04:58 -07:00
Linus Torvalds 53429290a0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc update from David Miller:
 "Two changes:

  1) It makes no sense to execute a VTOC partition table request in the
     Sun virtual block device driver and fail to load if it doesn't
     succeed because a) we don't use the result at all and b) it won't
     succeed if there is an EFI partition on the disk, for example.

     We read the partition table via the normal means in the block layer
     anyways, so this is really completely useless, so just remove it.

     From Dwight Engen.

  2) Hook up new bpf system call"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sunvdc: don't call VD_OP_GET_VTOC
  sparc: Hook up bpf system call.
2014-10-31 15:00:48 -07:00
Linus Torvalds 9f58c62fcc Microblaze patches for 3.18-rc3
- Wire-up new syscall
 - Fix PCI bug
 - Fix Kconfig warning
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Merge tag 'microblaze-3.18-rc3' of git://git.monstr.eu/linux-2.6-microblaze

Pull Microblaze updates from Michal Simek:
 - wire-up new bpf syscall
 - fix PCI bug
 - fix Kconfig warning

* tag 'microblaze-3.18-rc3' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Wire up bpf syscall
  microblaze: Fix IO space breakage after of_pci_range_to_resource() change
  microblaze: Fix missing NR_CPUS in menuconfig
2014-10-31 14:43:42 -07:00
Linus Torvalds 19e0d5f16a Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Fixes from all around the place:

   - hyper-V 32-bit PAE guest kernel fix
   - two IRQ allocation fixes on certain x86 boards
   - intel-mid boot crash fix
   - intel-quark quirk
   - /proc/interrupts duplicate irq chip name fix
   - cma boot crash fix
   - syscall audit fix
   - boot crash fix with certain TSC configurations (seen on Qemu)
   - smpboot.c build warning fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
  ACPI, irq, x86: Return IRQ instead of GSI in mp_register_gsi()
  x86, intel-mid: Create IRQs for APB timers and RTC timers
  x86: Don't enable F00F workaround on Intel Quark processors
  x86/irq: Fix XT-PIC-XT-PIC in /proc/interrupts
  x86, cma: Reserve DMA contiguous area after initmem_init()
  i386/audit: stop scribbling on the stack frame
  x86, apic: Handle a bad TSC more gracefully
  x86: ACPI: Do not translate GSI number if IOAPIC is disabled
  x86/smpboot: Move data structure to its primary usage scope
2014-10-31 14:30:16 -07:00
Rafael J. Wysocki 7d627280b3 Merge branches 'pm-cpufreq' and 'pm-sleep'
* pm-cpufreq:
  cpufreq: cpufreq-dt: Restore default cpumask_setall(policy->cpus)
  cpufreq: cpufreq-dt: disable unsupported OPPs

* pm-sleep:
  PM / Sleep: fix recovery during resuming from hibernation
  PM / Sleep: fix async suspend_late/freeze_late error handling
2014-10-31 22:25:07 +01:00
Rafael J. Wysocki 76dfdc2c6e Merge branches 'acpi-scan' and 'acpi-ec'
* acpi-scan:
  ACPI: Use ACPI companion to match only the first physical device

* acpi-ec:
  ACPI / EC: Fix regression due to conflicting firmware behavior between Samsung and Acer.
  Revert "ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC"
2014-10-31 22:24:44 +01:00
Linus Torvalds f5fa363026 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
 "Various scheduler fixes all over the place: three SCHED_DL fixes,
  three sched/numa fixes, two generic race fixes and a comment fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/dl: Fix preemption checks
  sched: Update comments for CLONE_NEWNS
  sched: stop the unbound recursion in preempt_schedule_context()
  sched/fair: Fix division by zero sysctl_numa_balancing_scan_size
  sched/fair: Care divide error in update_task_scan_period()
  sched/numa: Fix unsafe get_task_struct() in task_numa_assign()
  sched/deadline: Fix races between rt_mutex_setprio() and dl_task_timer()
  sched/deadline: Don't replenish from a !SCHED_DEADLINE entity
  sched: Fix race between task_group and sched_task_group
2014-10-31 14:05:35 -07:00
Linus Torvalds 5656b408ff Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, plus on the kernel side:

   - a revert for a newly introduced PMU driver which isn't complete yet
     and where we ran out of time with fixes (to be tried again in
     v3.19) - this makes up for a large chunk of the diffstat.

   - compilation warning fixes

   - a printk message fix

   - event_idx usage fixes/cleanups"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf probe: Trivial typo fix for --demangle
  perf tools: Fix report -F dso_from for data without branch info
  perf tools: Fix report -F dso_to for data without branch info
  perf tools: Fix report -F symbol_from for data without branch info
  perf tools: Fix report -F symbol_to for data without branch info
  perf tools: Fix report -F mispredict for data without branch info
  perf tools: Fix report -F in_tx for data without branch info
  perf tools: Fix report -F abort for data without branch info
  perf tools: Make CPUINFO_PROC an array to support different kernel versions
  perf callchain: Use global caching provided by libunwind
  perf/x86/intel: Revert incomplete and undocumented Broadwell client support
  perf/x86: Fix compile warnings for intel_uncore
  perf: Fix typos in sample code in the perf_event.h header
  perf: Fix and clean up initialization of pmu::event_idx
  perf: Fix bogus kernel printk
  perf diff: Add missing hists__init() call at tool start
2014-10-31 14:01:47 -07:00
Linus Torvalds c958f9200f Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fixes from Ingo Molnar:
 "This contains two futex fixes: one fixes a race condition, the other
  clarifies shared/private futex comments"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Fix a race condition between REQUEUE_PI and task death
  futex: Mention key referencing differences between shared and private futexes
2014-10-31 13:57:45 -07:00
David S. Miller 99a49ce613 Merge tag 'master-2014-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
pull request: wireless 2014-10-31

Please pull this small batch of spooky fixes intended for the 3.18
stream...boo!

Cyril Brulebois adds an rt2x00 device ID.

Dan Carpenter provides a one-line masking fix for an ath9k debugfs
entry.

Larry Finger gives us a package of small rtlwifi fixes which add some
bits that were left out of some feature updates that were included
in the merge window.  Hopefully this isn't a sign that the rtlwifi
base is getting too big...

Marc Yang brings a fix for a temporary mwifiex stall when doing 11n
RX reordering.

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

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:18:35 -04:00
Lennart Sorensen 1e5c4bc497 drivers: net: cpsw: Support ALLMULTI and fix IFF_PROMISC in switch mode
The cpsw driver did not support the IFF_ALLMULTI flag which makes dynamic
multicast routing not work.  Related to this, when enabling IFF_PROMISC
in switch mode, all registered multicast addresses are flushed, resulting
in only broadcast and unicast traffic being received.

A new cpsw_ale_set_allmulti function now scans through the ALE entry
table and adds/removes the host port from the unregistered multicast
port mask of each vlan entry depending on the state of IFF_ALLMULTI.
In promiscious mode, cpsw_ale_set_allmulti is used to force reception
of all multicast traffic in addition to the unicast and broadcast traffic.

With this change dynamic multicast and promiscious mode both work in
switch mode.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:17:56 -04:00
Lennart Sorensen 6f979eb3fc drivers: net: cpsw: Fix broken loop condition in switch mode
0d961b3b52 (drivers: net: cpsw: fix buggy
loop condition) accidentally fixed a loop comparison in too many places
while fixing a real bug.

It was correct to fix the dual_emac mode section since there 'i' is used
as an index into priv->slaves which is a 0 based array.

However the other two changes (which are only used in switch mode)
are wrong since there 'i' is actually the ALE port number, and port 0
is the host port, while port 1 and up are the slave ports.

Putting the loop condition back in the switch mode section fixes it.

A comment has been added to point out the intent clearly to avoid future
confusion.  Also a comment is fixed that said the opposite of what was
actually happening.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:17:56 -04:00
Lennart Sorensen 10738eeaf4 drivers: net: cpsw: Support ALLMULTI and fix IFF_PROMISC in switch mode
The cpsw driver did not support the IFF_ALLMULTI flag which makes dynamic
multicast routing not work.  Related to this, when enabling IFF_PROMISC
in switch mode, all registered multicast addresses are flushed, resulting
in only broadcast and unicast traffic being received.

A new cpsw_ale_set_allmulti function now scans through the ALE entry
table and adds/removes the host port from the unregistered multicast
port mask of each vlan entry depending on the state of IFF_ALLMULTI.
In promiscious mode, cpsw_ale_set_allmulti is used to force reception
of all multicast traffic in addition to the unicast and broadcast traffic.

With this change dynamic multicast and promiscious mode both work in
switch mode.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:16:42 -04:00
Lennart Sorensen 35532c211b drivers: net: cpsw: Fix broken loop condition in switch mode
0d961b3b52 (drivers: net: cpsw: fix buggy
loop condition) accidentally fixed a loop comparison in too many places
while fixing a real bug.

It was correct to fix the dual_emac mode section since there 'i' is used
as an index into priv->slaves which is a 0 based array.

However the other two changes (which are only used in switch mode)
are wrong since there 'i' is actually the ALE port number, and port 0
is the host port, while port 1 and up are the slave ports.

Putting the loop condition back in the switch mode section fixes it.

A comment has been added to point out the intent clearly to avoid future
confusion.  Also a comment is fixed that said the opposite of what was
actually happening.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:16:42 -04:00
Guenter Roeck e0fb6fb6d5 net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0
If a driver supports reading EEPROM but no EEPROM is installed in the system,
the driver's get_eeprom_len function returns 0. ethtool will subsequently
try to read that zero-length EEPROM anyway. If the driver does not support
EEPROM access at all, this operation will return -EOPNOTSUPP. If the driver
does support EEPROM access but no EEPROM is installed, the operation will
return -EINVAL. Return -EOPNOTSUPP in both cases for consistency.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:12:34 -04:00
Ezequiel Garcia 0089b745df ethernet: mvneta: Use PHY status standard message
Use phy_print_status() to report a change in the PHY status.
The current message is not verbose enough, so this commit improves
it by using the generic status message.

After this change, the kernel reports PHY status down and up events as:

mvneta f1070000.ethernet eth0: Link is Down
mvneta f1070000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:11:23 -04:00
Andy Shevchenko 1e19e084ea stmmac: pci: set default of the filter bins
The commit 3b57de958e brought the support for a different amount of the
filter bins, but didn't update the PCI driver accordingly. This patch appends
the default values when the device is enumerated via PCI bus.

Fixes: 3b57de958e (net: stmmac: Support devicetree configs for mcast and ucast filter entries)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:09:57 -04:00
Eric Dumazet 31aa860e0a bonding: add bond_tx_drop() helper
Because bonding stats are usually sum of slave stats, it was
not easy to account for tx drops at bonding layer.

We can use dev->tx_dropped for this, as this counter is later
added to the device stats (in dev_get_stats())

This extends the idea we had in commit ee63771474 ("bonding: Simplify
the xmit function for modes that use xmit_hash") for bond_3ad_xor_xmit()
to other bonding modes.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:09:03 -04:00