Commit Graph

60208 Commits

Author SHA1 Message Date
Gerhard Sittig 2771399ac9 fs_enet: cleanup clock API use
make the Freescale ethernet driver get, prepare and enable the FEC clock
during probe(); disable and unprepare the clock upon remove(), put is
done by the devm approach; hold a reference to the clock over the period
of use.

clock lookup is non-fatal as not all platforms provide clock specs in
their device tree; failure to enable specified clocks is fatal.

Signed-off-by: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22 22:13:54 -07:00
stephen hemminger 4a5a8aa6c9 ipv4: expose IPV4_DEVCONF
IP sends device configuration (see inet_fill_link_af) as an array
in the netlink information, but the indices in that array are not
exposed to userspace through any current santized header file.

It was available back in 2.6.32 (in /usr/include/linux/sysctl.h)
but was broken by:
  commit 02291680ff
  Author: Eric W. Biederman <ebiederm@xmission.com>
  Date:   Sun Feb 14 03:25:51 2010 +0000

    net ipv4: Decouple ipv4 interface parameters from binary sysctl numbers

Eric was solving the sysctl problem but then the indices were re-exposed
by a later addition of devconf support for IPV4

  commit 9f0f7272ac
  Author: Thomas Graf <tgraf@infradead.org>
  Date:   Tue Nov 16 04:32:48 2010 +0000

    ipv4: AF_INET link address family

Putting them in /usr/include/linux/ip.h seemed the logical match
for the DEVCONF_ definitions for IPV6 in /usr/include/linux/ip6.h

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22 20:30:15 -07:00
Duan Jiong c92a59eca8 ipv6: handle Redirect ICMP Message with no Redirected Header option
rfc 4861 says the Redirected Header option is optional, so
the kernel should not drop the Redirect Message that has no
Redirected Header option. In this patch, the function
ip6_redirect_no_header() is introduced to deal with that
condition.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
2013-08-22 20:08:21 -07:00
David S. Miller baf3b3f227 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
1) Some constifications, from Mathias Krause.

2) Catch bugs if a hold timer is still active when xfrm_policy_destroy()
   is called, from Fan Du.

3) Remove a redundant address family checking, from Fan Du.

4) Make xfrm_state timer monotonic to be independent of system clock changes,
   from Fan Du.

5) Remove an outdated comment on returning -EREMOTE in the xfrm_lookup(),
   from Rami Rosen.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22 16:04:41 -07:00
John W. Linville 69b307a48a Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2013-08-22 14:27:31 -04:00
Radu Caragea 41aacc1eea x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member
This is the updated version of df54d6fa54 ("x86 get_unmapped_area():
use proper mmap base for bottom-up direction") that only randomizes the
mmap base address once.

Signed-off-by: Radu Caragea <sinaelgl@gmail.com>
Reported-and-tested-by: Jeff Shorey <shoreyjeff@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Adrian Sendroiu <molecula2788@gmail.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-22 10:19:35 -07:00
Linus Torvalds 5ea80f76a5 Revert "x86 get_unmapped_area(): use proper mmap base for bottom-up direction"
This reverts commit df54d6fa54.

The commit isn't necessarily wrong, but because it recalculates the
random mmap_base every time, it seems to confuse user memory allocators
that expect contiguous mmap allocations even when the mmap address isn't
specified.

In particular, the MATLAB Java runtime seems to be unhappy. See

  https://bugzilla.kernel.org/show_bug.cgi?id=60774

So we'll want to apply the random offset only once, and Radu has a patch
for that.  Revert this older commit in order to apply the other one.

Reported-by: Jeff Shorey <shoreyjeff@gmail.com>
Cc: Radu Caragea <sinaelgl@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-22 10:18:44 -07:00
John W. Linville 89b5f74a26 Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 2013-08-22 11:35:22 -04:00
David S. Miller d94a0147dc Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next
Marc Kleine-Budde says:

====================
this pull-request for net-next consists of a series by Alexander
Shiyan, he cleans up the mcp251x driver. As the first patch touches
arch/arm/mach-pxa, it's acked by Haojian Zhuang.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-21 20:46:41 -07:00
Pavel Emelyanov 76975e9cb4 tun: Get skfilter layout
The only thing we may have from tun device is the fprog, whic contains
the number of filter elements and a pointer to (user-space) memory
where the elements are. The program itself may not be available if the
device is persistent and detached.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-21 12:21:45 -07:00
Pavel Emelyanov 849c9b6f93 tun: Allow to skip filter on attach
There's a small problem with sk-filters on tun devices. Consider
an application doing this sequence of steps:

fd = open("/dev/net/tun");
ioctl(fd, TUNSETIFF, { .ifr_name = "tun0" });
ioctl(fd, TUNATTACHFILTER, &my_filter);
ioctl(fd, TUNSETPERSIST, 1);
close(fd);

At that point the tun0 will remain in the system and will keep in
mind that there should be a socket filter at address '&my_filter'.

If after that we do

fd = open("/dev/net/tun");
ioctl(fd, TUNSETIFF, { .ifr_name = "tun0" });

we most likely receive the -EFAULT error, since tun_attach() would
try to connect the filter back. But (!) if we provide a filter at
address &my_filter, then tun0 will be created and the "new" filter
would be attached, but application may not know about that.

This may create certain problems to anyone using tun-s, but it's
critical problem for c/r -- if we meet a persistent tun device
with a filter in mind, we will not be able to attach to it to dump
its state (flags, owner, address, vnethdr size, etc.).

The proposal is to allow to attach to tun device (with TUNSETIFF)
w/o attaching the filter to the tun-file's socket. After this
attach app may e.g clean the device by dropping the filter, it
doesn't want to have one, or (in case of c/r) get information
about the device with tun ioctls.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-21 12:21:45 -07:00
Pavel Emelyanov fb7589a162 tun: Add ability to create tun device with given index
Tun devices cannot be created with ifidex user wants, but it's
required by checkpoint-restore project.

Long time ago such ability was implemented for rtnl_ops-based
interface for creating links (9c7dafbf net: Allow to create links
with given ifindex), but the only API for creating and managing
tuntap devices is ioctl-based and is evolving with adding new ones
(cde8b15f tuntap: add ioctl to attach or detach a file form tuntap
device).

Following that trend, here's how a new ioctl that sets the ifindex
for device, that _will_ be created by TUNSETIFF ioctl looks like.
So those who want a tuntap device with the ifindex N, should open
the tun device, call ioctl(fd, TUNSETIFINDEX, &N), then call TUNSETIFF.
If the index N is busy, then the register_netdev will find this out
and the ioctl would be failed with -EBUSY.

If setifindex is not called, then it will be generated as before.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-21 12:21:45 -07:00
Frédéric Dalleau 2dea632f9a Bluetooth: Add SCO connection fallback
When initiating a transparent eSCO connection, make use of T2 settings
at first try. T2 is the recommended settings from HFP 1.6 WideBand
Speech. Upon connection failure, try T1 settings.

When CVSD is requested and eSCO is supported, try to establish eSCO
connection using S3 settings. If it fails, fallback in sequence to S2,
S1, D1, D0 settings.

To know which setting should be used, conn->attempt is used. It
indicates the currently ongoing SCO connection attempt and can be used
as the index for the fallback settings table.

These setting and the fallback order are described in Bluetooth HFP 1.6
specification p. 101.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:13 +02:00
Frédéric Dalleau 07a5c61eda Bluetooth: Add constants and macro declaration for transparent data
This patch defines constants and macro for transparent data LMP
features. It refers to Bluetooth Core V4.0 specification, Part C, Chap
3.3 which defines LMP feature mask.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:12 +02:00
Frédéric Dalleau 10c62ddc6f Bluetooth: Parameters for outgoing SCO connections
In order to establish a transparent SCO connection, the correct settings
must be specified in the Setup Synchronous Connection request. For that,
a setting field is added to ACL connection data to set up the desired
parameters. The patch also removes usage of hdev->voice_setting in CVSD
connection and makes use of T2 parameters for transparent data.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:11 +02:00
Frédéric Dalleau 5d4d62f6ca Bluetooth: Add constants for SCO airmode
This patch defines constants for SCO airmode from SCO voice setting. It
refers to Bluetooth Core V4.0 specification, Part E, Chap 6.12 which
describe SCO voice setting format.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:10 +02:00
Frédéric Dalleau ad10b1a487 Bluetooth: Add Bluetooth socket voice option
This patch extends the current Bluetooth socket options with BT_VOICE.
This is intended to choose voice data type at runtime. It only applies
to SCO sockets. Incoming connections shall be setup during deferred
setup. Outgoing connections shall be setup before connect(). The desired
setting is stored in the SCO socket info. This patch declares needed
members, modifies getsockopt() and setsockopt().

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:09 +02:00
Frédéric Dalleau e660ed6c70 Bluetooth: Use hci_connect_sco directly
hci_connect is a super function for connecting hci protocols. But the
voice_setting parameter (introduced in subsequent patches) is only
needed by SCO and security requirements are not needed for SCO channels.
Thus, it makes sense to have a separate function for SCO.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-08-21 16:47:08 +02:00
Felix Fietkau 2dfca312a9 mac80211: add a flag to indicate CCK support for HT clients
brcm80211 cannot handle sending frames with CCK rates as part of an
A-MPDU session. Other drivers may have issues too. Set the flag in all
drivers that have been tested with CCK rates.

This fixes a reported brcmsmac regression introduced in
commit ef47a5e4f1aaf1d0e2e6875e34b2c9595897bef6
"mac80211/minstrel_ht: fix cck rate sampling"

Cc: stable@vger.kernel.org # 3.10
Reported-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-21 15:03:25 +02:00
Alexander Shiyan ae5d589e5f can: mcp251x: Eliminate irq_flags from driver platform_data
Flags is not used by boards, so remove this field from the driver
platform_data.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-08-21 09:28:29 +02:00
Alexander Shiyan 1ddff7da0f can: mcp251x: Replace power callbacks with regulator API
This patch replaces power callbacks to the regulator API. To improve
the readability of the code, helper for the regulator enable/disable
was added.

Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-08-21 09:28:29 +02:00
Mugunthan V N dbe34724c0 drivers: net: cpsw: remove platform data header file of cpsw
CPSW driver no longer supports platform register as all the SoCs which has CPSW
are supporting DT only booting, so moving cpsw.h header file from platform
include to drivers/net/ethernet/ti

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 23:50:15 -07:00
Sergei Shtylyov 8d3214c4e8 sh_eth: remove 'register_type' field from 'struct sh_eth_plat_data'
Now that the 'register_type' field of the 'sh_eth' driver's platform data is not
used by the driver anymore, it's time to remove it and  its initializers from
the SH platform code. Also  move *enum* declaring values for this  field from
<linux/sh_eth.h>  to  the  local driver's  header file as they're only needed
by the driver itself  now...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 17:10:41 -07:00
David S. Miller 89d5e23210 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Conflicts:
	net/netfilter/nf_conntrack_proto_tcp.c

The conflict had to do with overlapping changes dealing with
fixing the use of an "s32" to hold the value returned by
NAT_OFFSET().

Pablo Neira Ayuso says:

====================
The following batch contains Netfilter/IPVS updates for your net-next tree.
More specifically, they are:

* Trivial typo fix in xt_addrtype, from Phil Oester.

* Remove net_ratelimit in the conntrack logging for consistency with other
  logging subsystem, from Patrick McHardy.

* Remove unneeded includes from the recently added xt_connlabel support, from
  Florian Westphal.

* Allow to update conntracks via nfqueue, don't need NFQA_CFG_F_CONNTRACK for
  this, from Florian Westphal.

* Remove tproxy core, now that we have socket early demux, from Florian
  Westphal.

* A couple of patches to refactor conntrack event reporting to save a good
  bunch of lines, from Florian Westphal.

* Fix missing locking in NAT sequence adjustment, it did not manifested in
  any known bug so far, from Patrick McHardy.

* Change sequence number adjustment variable to 32 bits, to delay the
  possible early overflow in long standing connections, also from Patrick.

* Comestic cleanups for IPVS, from Dragos Foianu.

* Fix possible null dereference in IPVS in the SH scheduler, from Daniel
  Borkmann.

* Allow to attach conntrack expectations via nfqueue. Before this patch, you
  had to use ctnetlink instead, thus, we save the conntrack lookup.

* Export xt_rpfilter and xt_HMARK header files, from Nicolas Dichtel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 13:30:54 -07:00
Pravin B Shelar 58264848a5 openvswitch: Add vxlan tunneling support.
Following patch adds vxlan vport type for openvswitch using
vxlan api. So now there is vxlan dependency for openvswitch.

CC: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 00:15:44 -07:00
Pravin B Shelar 49560532d7 vxlan: Factor out vxlan send api.
Following patch allows more code sharing between vxlan and ovs-vxlan.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 00:15:43 -07:00
Pravin B Shelar 012a5729ff vxlan: Extend vxlan handlers for openvswitch.
Following patch adds data field to vxlan socket and export
vxlan handler api.
vh->data is required to store private data per vxlan handler.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 00:15:43 -07:00
Hannes Frederic Sowa f46078cfcd ipv6: drop packets with multiple fragmentation headers
It is not allowed for an ipv6 packet to contain multiple fragmentation
headers. So discard packets which were already reassembled by
fragmentation logic and send back a parameter problem icmp.

The updates for RFC 6980 will come in later, I have to do a bit more
research here.

Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-20 00:11:24 -07:00
David S. Miller 2ff1cf12c9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
John W. Linville d074666366 Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2013-08-16 14:24:51 -04:00
Linus Torvalds ddea368c78 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix SKB leak in 8139cp, from Dave Jones.

 2) Fix use of *_PAGES interfaces with mlx5 firmware, from Moshe Lazar.

 3) RCU conversion of macvtap introduced two races, fixes by Eric
    Dumazet

 4) Synchronize statistic flows in bnx2x driver to prevent corruption,
    from Dmitry Kravkov

 5) Undo optimization in IP tunneling, we were using the inner IP header
    in some cases to inherit the IP ID, but that isn't correct in some
    circumstances.  From Pravin B Shelar

 6) Use correct struct size when parsing netlink attributes in
    rtnl_bridge_getlink().  From Asbjoern Sloth Toennesen

 7) Length verifications in tun_get_user() are bogus, from Weiping Pan
    and Dan Carpenter

 8) Fix bad merge resolution during 3.11 networking development in
    openvswitch, albeit a harmless one which added some unreachable
    code.  From Jesse Gross

 9) Wrong size used in flexible array allocation in openvswitch, from
    Pravin B Shelar

10) Clear out firmware capability flags the be2net driver isn't ready to
    handle yet, from Sarveshwar Bandi

11) Revert DMA mapping error checking addition to cxgb3 driver, it's
    buggy.  From Alexey Kardashevskiy

12) Fix regression in packet scheduler rate limiting when working with a
    link layer of ATM.  From Jesper Dangaard Brouer

13) Fix several errors in TCP Cubic congestion control, in particular
    overflow errors in timestamp calculations.  From Eric Dumazet and
    Van Jacobson

14) In ipv6 routing lookups, we need to backtrack if subtree traversal
    don't result in a match.  From Hannes Frederic Sowa

15) ipgre_header() returns incorrect packet offset.  Fix from Timo Teräs

16) Get "low latency" out of the new MIB counter names.  From Eliezer
    Tamir

17) State check in ndo_dflt_fdb_del() is inverted, from Sridhar
    Samudrala

18) Handle TCP Fast Open properly in netfilter conntrack, from Yuchung
    Cheng

19) Wrong memcpy length in pcan_usb driver, from Stephane Grosjean

20) Fix dealock in TIPC, from Wang Weidong and Ding Tianhong

21) call_rcu() call to destroy SCTP transport is done too early and
    might result in an oops.  From Daniel Borkmann

22) Fix races in genetlink family dumps, from Johannes Berg

23) Flags passed into macvlan by the user need to be validated properly,
    from Michael S Tsirkin

24) Fix skge build on 32-bit, from Stephen Hemminger

25) Handle malformed TCP headers properly in xt_TCPMSS, from Pablo Neira
    Ayuso

26) Fix handling of stacked vlans in vlan_dev_real_dev(), from Nikolay
    Aleksandrov

27) Eliminate MTU calculation overflows in esp{4,6}, from Daniel
    Borkmann

28) neigh_parms need to be setup before calling the ->ndo_neigh_setup()
    method.  From Veaceslav Falico

29) Kill out-of-bounds prefetch in fib_trie, from Eric Dumazet

30) Don't dereference MLD query message if the length isn't value in the
    bridge multicast code, from Linus Lüssing

31) Fix VXLAN IGMP join regression due to an inverted check, from Cong
    Wang

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (70 commits)
  net/mlx5_core: Support MANAGE_PAGES and QUERY_PAGES firmware command changes
  tun: signedness bug in tun_get_user()
  qlcnic: Fix diagnostic interrupt test for 83xx adapters
  qlcnic: Fix beacon state return status handling
  qlcnic: Fix set driver version command
  net: tg3: fix NULL pointer dereference in tg3_io_error_detected and tg3_io_slot_reset
  net_sched: restore "linklayer atm" handling
  drivers/net/ethernet/via/via-velocity.c: update napi implementation
  Revert "cxgb3: Check and handle the dma mapping errors"
  be2net: Clear any capability flags that driver is not interested in.
  openvswitch: Reset tunnel key between input and output.
  openvswitch: Use correct type while allocating flex array.
  openvswitch: Fix bad merge resolution.
  tun: compare with 0 instead of total_len
  rtnetlink: rtnl_bridge_getlink: Call nlmsg_find_attr() with ifinfomsg header
  ethernet/arc/arc_emac - fix NAPI "work > weight" warning
  ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id.
  bnx2x: prevent crash in shutdown flow with CNIC
  bnx2x: fix PTE write access error
  bnx2x: fix memory leak in VF
  ...
2013-08-16 09:35:29 -07:00
Linus Torvalds 2b047252d0 Fix TLB gather virtual address range invalidation corner cases
Ben Tebulin reported:

 "Since v3.7.2 on two independent machines a very specific Git
  repository fails in 9/10 cases on git-fsck due to an SHA1/memory
  failures.  This only occurs on a very specific repository and can be
  reproduced stably on two independent laptops.  Git mailing list ran
  out of ideas and for me this looks like some very exotic kernel issue"

and bisected the failure to the backport of commit 53a59fc67f ("mm:
limit mmu_gather batching to fix soft lockups on !CONFIG_PREEMPT").

That commit itself is not actually buggy, but what it does is to make it
much more likely to hit the partial TLB invalidation case, since it
introduces a new case in tlb_next_batch() that previously only ever
happened when running out of memory.

The real bug is that the TLB gather virtual memory range setup is subtly
buggered.  It was introduced in commit 597e1c3580 ("mm/mmu_gather:
enable tlb flush range in generic mmu_gather"), and the range handling
was already fixed at least once in commit e6c495a96c ("mm: fix the TLB
range flushed when __tlb_remove_page() runs out of slots"), but that fix
was not complete.

The problem with the TLB gather virtual address range is that it isn't
set up by the initial tlb_gather_mmu() initialization (which didn't get
the TLB range information), but it is set up ad-hoc later by the
functions that actually flush the TLB.  And so any such case that forgot
to update the TLB range entries would potentially miss TLB invalidates.

Rather than try to figure out exactly which particular ad-hoc range
setup was missing (I personally suspect it's the hugetlb case in
zap_huge_pmd(), which didn't have the same logic as zap_pte_range()
did), this patch just gets rid of the problem at the source: make the
TLB range information available to tlb_gather_mmu(), and initialize it
when initializing all the other tlb gather fields.

This makes the patch larger, but conceptually much simpler.  And the end
result is much more understandable; even if you want to play games with
partial ranges when invalidating the TLB contents in chunks, now the
range information is always there, and anybody who doesn't want to
bother with it won't introduce subtle bugs.

Ben verified that this fixes his problem.

Reported-bisected-and-tested-by: Ben Tebulin <tebulin@googlemail.com>
Build-testing-by: Stephen Rothwell <sfr@canb.auug.org.au>
Build-testing-by: Richard Weinberger <richard.weinberger@gmail.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-16 08:52:46 -07:00
Johannes Berg 27b3eb9c06 mac80211: add APIs to allow keeping connections after WoWLAN
In order to be able to (securely) keep connections alive after
the system was suspended for WoWLAN, we need some additional
APIs. We already have API (ieee80211_gtk_rekey_notify) to tell
wpa_supplicant about the new replay counter if GTK rekeying
was done by the device while the host was asleep, but that's
not sufficient.

If GTK rekeying wasn't done, we need to tell the host about
sequence counters for the GTK (and PTK regardless of rekeying)
that was used while asleep, add ieee80211_set_key_rx_seq() for
that.

If GTK rekeying was done, then we need to be able to disable
the old keys (with ieee80211_remove_key()) and allocate the
new GTK key(s) in mac80211 (with ieee80211_gtk_rekey_add()).

If protocol offload (e.g. ARP) is implemented, then also the
TX sequence counter for the PTK must be updated, using the new
ieee80211_set_key_tx_seq() function.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-16 12:58:43 +02:00
Moshe Lazer 0a324f3189 net/mlx5_core: Support MANAGE_PAGES and QUERY_PAGES firmware command changes
In the previous QUERY_PAGES command version we used one command to get the
required amount of boot, init and post init pages.  The new version uses the
op_mod field to specify whether the query is for the required amount of boot,
init or post init pages. In addition the output field size for the required
amount of pages increased from 16 to 32 bits.

In MANAGE_PAGES command the input_num_entries and output_num_entries fields
sizes changed from 16 to 32 bits and the PAS tables offset changed to 0x10.

In the pages request event the num_pages field also changed to 32 bits.

In the HCA-capabilities-layout the size and location of max_qp_mcg field has
been changed to support 24 bits.

This patch isn't compatible with firmware versions < 5; however, it  turns out that the
first GA firmware we will publish will not support previous versions so this should be OK.

Signed-off-by: Moshe Lazer <moshel@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-15 15:42:57 -07:00
Franky Lin b05e92545d brcmfmac: abstract tx packet processing functions
Abstract brcmf_sdio_txpkt_prep and brcmf_sdio_txpkt_postp as a preparation
of chained tx packets for host side tx glomming.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-15 16:07:55 -04:00
Jesper Dangaard Brouer 8a8e3d84b1 net_sched: restore "linklayer atm" handling
commit 56b765b79 ("htb: improved accuracy at high rates")
broke the "linklayer atm" handling.

 tc class add ... htb rate X ceil Y linklayer atm

The linklayer setting is implemented by modifying the rate table
which is send to the kernel.  No direct parameter were
transferred to the kernel indicating the linklayer setting.

The commit 56b765b79 ("htb: improved accuracy at high rates")
removed the use of the rate table system.

To keep compatible with older iproute2 utils, this patch detects
the linklayer by parsing the rate table.  It also supports future
versions of iproute2 to send this linklayer parameter to the
kernel directly. This is done by using the __reserved field in
struct tc_ratespec, to convey the choosen linklayer option, but
only using the lower 4 bits of this field.

Linklayer detection is limited to speeds below 100Mbit/s, because
at high rates the rtab is gets too inaccurate, so bad that
several fields contain the same values, this resembling the ATM
detect.  Fields even start to contain "0" time to send, e.g. at
1000Mbit/s sending a 96 bytes packet cost "0", thus the rtab have
been more broken than we first realized.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-15 01:43:08 -07:00
Nicolas Dichtel 0bd8762824 ip6tnl: add x-netns support
This patch allows to switch the netns when packet is encapsulated or
decapsulated. In other word, the encapsulated packet is received in a netns,
where the lookup is done to find the tunnel. Once the tunnel is found, the
packet is decapsulated and injecting into the corresponding interface which
stands to another netns.

When one of the two netns is removed, the tunnel is destroyed.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-15 01:00:20 -07:00
Nicolas Dichtel 6c742e714d ipip: add x-netns support
This patch allows to switch the netns when packet is encapsulated or
decapsulated. In other word, the encapsulated packet is received in a netns,
where the lookup is done to find the tunnel. Once the tunnel is found, the
packet is decapsulated and injecting into the corresponding interface which
stands to another netns.

When one of the two netns is removed, the tunnel is destroyed.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-15 01:00:20 -07:00
Linus Torvalds f1d6e17f54 Merge branch 'akpm' (patches from Andrew Morton)
Merge a bunch of fixes from Andrew Morton.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  fs/proc/task_mmu.c: fix buffer overflow in add_page_map()
  arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig"
  ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id()
  x86 get_unmapped_area(): use proper mmap base for bottom-up direction
  ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page
  ocfs2: Revert 40bd62e to avoid regression in extended allocation
  drivers/rtc/rtc-stmp3xxx.c: provide timeout for potentially endless loop polling a HW bit
  hugetlb: fix lockdep splat caused by pmd sharing
  aoe: adjust ref of head for compound page tails
  microblaze: fix clone syscall
  mm: save soft-dirty bits on file pages
  mm: save soft-dirty bits on swapped pages
  memcg: don't initialize kmem-cache destroying work for root caches
2013-08-14 10:04:43 -07:00
Nicolas Dichtel 38c67328ac netfilter: export xt_HMARK.h to userland
This file contains the API for the target "HMARK", hence it should be exported
to userland.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-08-14 10:48:05 +02:00
Nicolas Dichtel f0c03956ac netfilter: export xt_rpfilter.h to userland
This file contains the API for the match "rpfilter", hence it should be exported
to userland.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-08-14 10:47:15 +02:00
Radu Caragea df54d6fa54 x86 get_unmapped_area(): use proper mmap base for bottom-up direction
When the stack is set to unlimited, the bottomup direction is used for
mmap-ings but the mmap_base is not used and thus effectively renders
ASLR for mmapings along with PIE useless.

Cc: Michel Lespinasse <walken@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Sendroiu <molecula2788@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:49 -07:00
Michal Simek dfa9771a7c microblaze: fix clone syscall
Fix inadvertent breakage in the clone syscall ABI for Microblaze that
was introduced in commit f3268edbe6 ("microblaze: switch to generic
fork/vfork/clone").

The Microblaze syscall ABI for clone takes the parent tid address in the
4th argument; the third argument slot is used for the stack size.  The
incorrectly-used CLONE_BACKWARDS type assigned parent tid to the 3rd
slot.

This commit restores the original ABI so that existing userspace libc
code will work correctly.

All kernel versions from v3.8-rc1 were affected.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:48 -07:00
Cyrill Gorcunov 41bb3476b3 mm: save soft-dirty bits on file pages
Andy reported that if file page get reclaimed we lose the soft-dirty bit
if it was there, so save _PAGE_BIT_SOFT_DIRTY bit when page address get
encoded into pte entry.  Thus when #pf happens on such non-present pte
we can restore it back.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:48 -07:00
Cyrill Gorcunov 179ef71cbc mm: save soft-dirty bits on swapped pages
Andy Lutomirski reported that if a page with _PAGE_SOFT_DIRTY bit set
get swapped out, the bit is getting lost and no longer available when
pte read back.

To resolve this we introduce _PTE_SWP_SOFT_DIRTY bit which is saved in
pte entry for the page being swapped out.  When such page is to be read
back from a swap cache we check for bit presence and if it's there we
clear it and restore the former _PAGE_SOFT_DIRTY bit back.

One of the problem was to find a place in pte entry where we can save
the _PTE_SWP_SOFT_DIRTY bit while page is in swap.  The _PAGE_PSE was
chosen for that, it doesn't intersect with swap entry format stored in
pte.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:47 -07:00
Hannes Frederic Sowa fc4eba58b4 ipv6: make unsolicited report intervals configurable for mld
Commit cab70040df ("net: igmp:
Reduce Unsolicited report interval to 1s when using IGMPv3") and
2690048c01 ("net: igmp: Allow user-space
configuration of igmp unsolicited report interval") by William Manley made
igmp unsolicited report intervals configurable per interface and corrected
the interval of unsolicited igmpv3 report messages resendings to 1s.

Same needs to be done for IPv6:

MLDv1 (RFC2710 7.10.): 10 seconds
MLDv2 (RFC3810 9.11.): 1 second

Both intervals are configurable via new procfs knobs
mldv1_unsolicited_report_interval and mldv2_unsolicited_report_interval.

(also added .force_mld_version to ipv6_devconf_dflt to bring structs in
line without semantic changes)

v2:
a) Joined documentation update for IPv4 and IPv6 MLD/IGMP
   unsolicited_report_interval procfs knobs.
b) incorporate stylistic feedback from William Manley

v3:
a) add new DEVCONF_* values to the end of the enum (thanks to David
   Miller)

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: William Manley <william.manley@youview.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-13 17:05:04 -07:00
Linus Torvalds 28fbc8b6a2 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
 "Docbook fixes that make 99% of the diffstat, plus a oneliner fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Ensure update_cfs_shares() is called for parents of continuously-running tasks
  sched: Fix some kernel-doc warnings
2013-08-13 16:58:17 -07:00
Pravin B Shelar 4221f40513 ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id.
Using inner-id for tunnel id is not safe in some rare cases.
E.g. packets coming from multiple sources entering same tunnel
can have same id. Therefore on tunnel packet receive we
could have packets from two different stream but with same
source and dst IP with same ip-id which could confuse ip packet
reassembly.

Following patch reverts optimization from commit
490ab08127 (IP_GRE: Fix IP-Identification.)

CC: Jarno Rajahalme <jrajahalme@nicira.com>
CC: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-13 16:52:50 -07:00
Eric Lapuyade 352a5f5fb3 NFC: netlink: Add result of firmware operation to completion event
Result is added as an NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS attribute
containing the standard errno positive value of the completion result.
This event will be sent when the firmare download operation is done and
will contain the operation result.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-14 01:12:58 +02:00
Eric Lapuyade ef04158e13 NFC: Move nfc_fw_download_done() definition from private to public
This API must be called by NFC drivers, and its prototype was
incorrectly placed.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-14 01:08:01 +02:00
David S. Miller 98f1b7f382 Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:

====================
This is a batch of updates intended for 3.12.  It is mostly driver
stuff, although Johannes Berg and Simon Wunderlich make a good
showing with mac80211 bits (particularly some work on 5/10 MHz
channel support).

The usual suspects are mostly represented.  There are lots of updates
to iwlwifi, ath9k, ath10k, mwifiex, rt2x00, wil6210, as usual.
The bcma bus gets some love this time, as do cw1200, iwl4965, and a
few other bits here and there.  I don't think there is much unusual
here, FWIW.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-13 15:59:09 -07:00
Samuel Ortiz ac22ac466a NFC: Add a GET_SE netlink API
In order to fetch the discovered secure elements from an NFC controller,
we need to send a netlink command that will dump the list of available
SEs from NFC.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-14 00:35:19 +02:00
Samuel Ortiz 91a32269e3 NFC: Define secure element connectivity and transaction events
The SE_CONNECTIVITY event is for an SE to request connection to e.g. a
modem. The SE_TRANSACTION one is sent when an application running on a
specific SE wants to notify the host CPU about the end of a transaction.
Those events respectively map to the EVT_CONNECTIVITY and the
EVT_TRANSACTION HCI events.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-14 00:35:17 +02:00
Samuel Ortiz 1972b5b3a6 NFC: Document secure element addition/removal netlink events
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-14 00:35:16 +02:00
stephen hemminger ebd8b934e2 pptp: fix byte order warnings
Pptp driver has lots of byte order warnings from sparse.
This was because the on-the-wire header is in network byte order (obviously)
but the definition did not reflect that.

Also, the address structure to user space actually put the call id
in host order. Rather than break ABI compatibility, just acknowledge
the existing design.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-13 15:10:22 -07:00
Oleg Nesterov e0acd0a68e sched: fix the theoretical signal_wake_up() vs schedule() race
This is only theoretical, but after try_to_wake_up(p) was changed
to check p->state under p->pi_lock the code like

	__set_current_state(TASK_INTERRUPTIBLE);
	schedule();

can miss a signal. This is the special case of wait-for-condition,
it relies on try_to_wake_up/schedule interaction and thus it does
not need mb() between __set_current_state() and if(signal_pending).

However, this __set_current_state() can move into the critical
section protected by rq->lock, now that try_to_wake_up() takes
another lock we need to ensure that it can't be reordered with
"if (signal_pending(current))" check inside that section.

The patch is actually one-liner, it simply adds smp_wmb() before
spin_lock_irq(rq->lock). This is what try_to_wake_up() already
does by the same reason.

We turn this wmb() into the new helper, smp_mb__before_spinlock(),
for better documentation and to allow the architectures to change
the default implementation.

While at it, kill smp_mb__after_lock(), it has no callers.

Perhaps we can also add smp_mb__before/after_spinunlock() for
prepare_to_wait().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 08:19:26 -07:00
Pablo Neira Ayuso bd07793705 netfilter: nfnetlink_queue: allow to attach expectations to conntracks
This patch adds the capability to attach expectations via nfnetlink_queue.
This is required by conntrack helpers that trigger expectations based on
the first packet seen like the TFTP and the DHCPv6 user-space helpers.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-08-13 16:32:10 +02:00
John W. Linville 89c2af3c14 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
	drivers/net/ethernet/broadcom/Kconfig
2013-08-12 14:45:06 -04:00
David Spinadel 52981cd794 mac80211: add vif to testmode cmd
Pass the wdev from cfg80211 on to the driver as the vif
if given and it's valid for the driver.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-12 14:11:42 +02:00
David Spinadel fc73f11f5f cfg80211: add wdev to testmode cmd
To allow drivers to implement per-interface testmode operations
more easily, pass a wdev pointer if any identification for one
was given from userspace. Clean up the code a bit while at it.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-12 14:11:37 +02:00
Johannes Berg af61a16518 mac80211: add control port protocol TX control flag
A lot of drivers check the frame protocol for ETH_P_PAE,
for various reasons (like making those more reliable).
Add a new flags bitmap to the TX control info and a new
flag indicating the control port protocol is in use to
let all drivers also apply such logic to other control
port protocols, should they be configured.

Also use the new flag in the iwlwifi drivers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-12 14:09:29 +02:00
Linus Torvalds b8ea0d06ff NFS client bugfixes for 3.11
- Stable patch for lockd to fix Oopses due to inappropriate calls to
   utsname()->nodename
 - Stable patches for sunrpc to fix Oopses on shutdown when using
   AF_LOCAL sockets with rpcbind
 - Fix memory leak and error checking issues in nfs4_proc_lookup_mountpoint
 - Fix a regression with the sync mount option failing to work for nfs4 mounts
 - Fix a writeback performance issue when doing cache invalidation
 - Remove an incorrect call to nfs_setsecurity in nfs_fhget
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Merge tag 'nfs-for-3.11-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:

 - Stable patch for lockd to fix Oopses due to inappropriate calls to
   utsname()->nodename

 - Stable patches for sunrpc to fix Oopses on shutdown when using
   AF_LOCAL sockets with rpcbind

 - Fix memory leak and error checking issues in nfs4_proc_lookup_mountpoint

 - Fix a regression with the sync mount option failing to work for nfs4
   mounts

 - Fix a writeback performance issue when doing cache invalidation

 - Remove an incorrect call to nfs_setsecurity in nfs_fhget

* tag 'nfs-for-3.11-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Fix up nfs4_proc_lookup_mountpoint
  NFS: Remove unnecessary call to nfs_setsecurity in nfs_fhget()
  NFSv4: Fix the sync mount option for nfs4 mounts
  NFS: Fix writeback performance issue on cache invalidation
  SUNRPC: If the rpcbind channel is disconnected, fail the call to unregister
  SUNRPC: Don't auto-disconnect from the local rpcbind socket
  LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs
2013-08-10 15:20:37 -07:00
Linus Torvalds 8ae3f1d095 Staging driver fixes for 3.11-rc5
Here are 3 small fixes for staging/IIO drivers for 3.11-rc5.  Nothing
 huge, two IIO driver fixes, and a zcache fix.  All of these have been in
 linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are 3 small fixes for staging/IIO drivers for 3.11-rc5.  Nothing
  huge, two IIO driver fixes, and a zcache fix.  All of these have been
  in linux-next for a while"

* tag 'staging-3.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: zcache: fix "zcache=" kernel parameter
  iio: ti_am335x_adc: Fix wrong samples received on 1st read
  iio:trigger: Fix use_count race condition
2013-08-10 09:00:51 -07:00
Eric Dumazet 28d6427109 net: attempt high order allocations in sock_alloc_send_pskb()
Adding paged frags skbs to af_unix sockets introduced a performance
regression on large sends because of additional page allocations, even
if each skb could carry at least 100% more payload than before.

We can instruct sock_alloc_send_pskb() to attempt high order
allocations.

Most of the time, it does a single page allocation instead of 8.

I added an additional parameter to sock_alloc_send_pskb() to
let other users to opt-in for this new feature on followup patches.

Tested:

Before patch :

$ netperf -t STREAM_STREAM
STREAM STREAM TEST
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 2304  212992  212992    10.00    46861.15

After patch :

$ netperf -t STREAM_STREAM
STREAM STREAM TEST
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 2304  212992  212992    10.00    57981.11

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-10 01:16:44 -07:00
Eric Dumazet e370a72363 af_unix: improve STREAM behavior with fragmented memory
unix_stream_sendmsg() currently uses order-2 allocations,
and we had numerous reports this can fail.

The __GFP_REPEAT flag present in sock_alloc_send_pskb() is
not helping.

This patch extends the work done in commit eb6a24816b
("af_unix: reduce high order page allocations) for
datagram sockets.

This opens the possibility of zero copy IO (splice() and
friends)

The trick is to not use skb_pull() anymore in recvmsg() path,
and instead add a @consumed field in UNIXCB() to track amount
of already read payload in the skb.

There is a performance regression for large sends
because of extra page allocations that will be addressed
in a follow-up patch, allowing sock_alloc_send_pskb()
to attempt high order page allocations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-10 01:16:44 -07:00
Yuchung Cheng 149479d019 tcp: add server ip to encrypt cookie in fast open
Encrypt the cookie with both server and client IPv4 addresses,
such that multi-homed server will grant different cookies
based on both the source and destination IPs. No client change
is needed since cookie is opaque to the client.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-10 00:35:33 -07:00
Linus Torvalds 14e94194d1 ACPI and power management fixes for 3.11-rc5
- ACPI-based memory hotplug stopped working after a recent change,
   because it's not possible to associate sufficiently many "physical"
   devices with one ACPI device object due to an artificial limit.
   Fix from Rafael J Wysocki removes that limit and makes memory
   hotplug work again.
 
 - A change made in 3.9 uncovered a bug in the ACPI processor driver
   preventing NUMA nodes from being put offline due to an ordering
   issue.  Fix from Yasuaki Ishimatsu changes the ordering to make
   things work again.
 
 - One of the recent ACPI video commits (that hasn't been reverted
   so far) uncovered a bug in the code handling quirky BIOSes that
   caused some Asus machines to boot with backlight completely off
   which made it quite difficult to use them afterward.  Fix from
   Felipe Contreras improves the quirk to cover this particular
   case correctly.
 
 - A cpufreq user space interface change made in 3.10 inadvertently
   renamed the ignore_nice_load sysfs attribute to ignore_nice which
   resulted in some confusion.  Fix from Viresh Kumar changes the name
   back to ignore_nice_load.
 
 - An initialization ordering change made in 3.9 broke cpufreq on
   loongson2 boards.  Fix from Aaro Koskinen restores the correct
   initialization ordering there.
 
 - Fix breakage resulting from a mistake made in 3.9 and causing the
   detection of some graphics adapters (that were detected correctly
   before) to fail.  There are two objects representing the same PCIe
   port in the affected systems' ACPI tables and both appear as
   "enabled" and we are expected to guess which one to use.  We used
   to choose the right one before by pure luck, but when we tried to
   address another similar corner case, the luck went away.  This time
   we try to make our guessing a bit more educated which is reported
   to work on those systems.
 
 - The /proc/acpi/wakeup interface code is missing some locking
   which may lead to breakage if that file is written or read during
   hotplug of wakeup devices.  That should be rare but still possible,
   so it's better to start using the appropriate locking there.
 
 /
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Merge tag 'pm+acpi-3.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - ACPI-based memory hotplug stopped working after a recent change,
   because it's not possible to associate sufficiently many "physical"
   devices with one ACPI device object due to an artificial limit.  Fix
   from Rafael J Wysocki removes that limit and makes memory hotplug
   work again.

 - A change made in 3.9 uncovered a bug in the ACPI processor driver
   preventing NUMA nodes from being put offline due to an ordering
   issue.  Fix from Yasuaki Ishimatsu changes the ordering to make
   things work again.

 - One of the recent ACPI video commits (that hasn't been reverted so
   far) uncovered a bug in the code handling quirky BIOSes that caused
   some Asus machines to boot with backlight completely off which made
   it quite difficult to use them afterward.  Fix from Felipe Contreras
   improves the quirk to cover this particular case correctly.

 - A cpufreq user space interface change made in 3.10 inadvertently
   renamed the ignore_nice_load sysfs attribute to ignore_nice which
   resulted in some confusion.  Fix from Viresh Kumar changes the name
   back to ignore_nice_load.

 - An initialization ordering change made in 3.9 broke cpufreq on
   loongson2 boards.  Fix from Aaro Koskinen restores the correct
   initialization ordering there.

 - Fix breakage resulting from a mistake made in 3.9 and causing the
   detection of some graphics adapters (that were detected correctly
   before) to fail.  There are two objects representing the same PCIe
   port in the affected systems' ACPI tables and both appear as
   "enabled" and we are expected to guess which one to use.  We used to
   choose the right one before by pure luck, but when we tried to
   address another similar corner case, the luck went away.  This time
   we try to make our guessing a bit more educated which is reported to
   work on those systems.

 - The /proc/acpi/wakeup interface code is missing some locking which
   may lead to breakage if that file is written or read during hotplug
   of wakeup devices.  That should be rare but still possible, so it's
   better to start using the appropriate locking there.

* tag 'pm+acpi-3.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Try harder to resolve _ADR collisions for bridges
  cpufreq: rename ignore_nice as ignore_nice_load
  cpufreq: loongson2: fix regression related to clock management
  ACPI / processor: move try_offline_node() after acpi_unmap_lsapic()
  ACPI: Drop physical_node_id_bitmap from struct acpi_device
  ACPI / PM: Walk physical_node_list under physical_node_lock
  ACPI / video: improve quirk check in acpi_video_bqc_quirk()
2013-08-09 15:07:19 -07:00
Linus Torvalds 79a6fb1ace Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
 "Some driver fixes (em28xx, coda, usbtv, s5p, hdpvr and ml86v7667) and
  a fix for media DocBook"

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] em28xx: fix assignment of the eeprom data
  [media] hdpvr: fix iteration over uninitialized lists in hdpvr_probe()
  [media] usbtv: fix dependency
  [media] usbtv: Throw corrupted frames away
  [media] usbtv: Fix deinterlacing
  [media] v4l2: added missing mutex.h include to v4l2-ctrls.h
  [media] DocBook: upgrade media_api DocBook version to 4.2
  [media] ml86v7667: fix compile warning: 'ret' set but not used
  [media] s5p-g2d: Fix registration failure
  [media] media: coda: Fix DT driver data pointer for i.MX27
  [media] s5p-mfc: Fix input/output format reporting
2013-08-09 15:04:09 -07:00
David S. Miller 71acc0ddd4 Revert "net: sctp: convert sctp_checksum_disable module param into sctp sysctl"
This reverts commit cda5f98e36.

As per Vlad's request.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 13:09:41 -07:00
John W. Linville fa5978447c Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2013-08-09 15:08:10 -04:00
John W. Linville 4f05444892 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2013-08-09 15:06:28 -04:00
Eliezer Tamir 288a937637 net: rename busy poll MIB counter
Rename mib counter from "low latency" to "busy poll"

v1 also moved the counter to the ip MIB (suggested by Shawn Bohrer)
Eric Dumazet suggested that the current location is better.

So v2 just renames the counter to fit the new naming convention.

Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 11:39:08 -07:00
Daniel Borkmann 477143e3fe net: sctp: trivial: update bug report in header comment
With the restructuring of the lksctp.org site, we only allow bug
reports through the SCTP mailing list linux-sctp@vger.kernel.org,
not via SF, as SF is only used for web hosting and nothing more.
While at it, also remove the obvious statement that bugs will be
fixed and incooperated into the kernel.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 11:33:02 -07:00
Daniel Borkmann cda5f98e36 net: sctp: convert sctp_checksum_disable module param into sctp sysctl
Get rid of the last module parameter for SCTP and make this
configurable via sysctl for SCTP like all the rest of SCTP's
configuration knobs.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 11:33:02 -07:00
William Manley 2690048c01 net: igmp: Allow user-space configuration of igmp unsolicited report interval
Adds the new procfs knobs:

    /proc/sys/net/ipv4/conf/*/igmpv2_unsolicited_report_interval
    /proc/sys/net/ipv4/conf/*/igmpv3_unsolicited_report_interval

Which will allow userspace configuration of the IGMP unsolicited report
interval (see below) in milliseconds.  The defaults are 10000ms for IGMPv2
and 1000ms for IGMPv3 in accordance with RFC2236 and RFC3376.

Background:

If an IGMP join packet is lost you will not receive data sent to the
multicast group so if no data arrives from that multicast group in a
period of time after the IGMP join a second IGMP join will be sent.  The
delay between joins is the "IGMP Unsolicited Report Interval".

Prior to this patch this value was hard coded in the kernel to 10s for
IGMPv2 and 1s for IGMPv3.  10s is unsuitable for some use-cases, such as
IPTV as it can cause channel change to be slow in the presence of packet
loss.

This patch allows the value to be overridden from userspace for both
IGMPv2 and IGMPv3 such that it can be tuned accoding to the network.

Tested with Wireshark and a simple program to join a (non-existent)
multicast group.  The distribution of timings for the second join differ
based upon setting the procfs knobs.

igmpvX_unsolicited_report_interval is intended to follow the pattern
established by force_igmp_version, and while a procfs entry has been added
a corresponding sysctl knob has not as it is my understanding that sysctl
is deprecated[1].

[1]: http://lwn.net/Articles/247243/

Signed-off-by: William Manley <william.manley@youview.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 11:27:46 -07:00
William Manley 5c6fe01c1f net: igmp: Don't flush routing cache when force_igmp_version is modified
The procfs knob /proc/sys/net/ipv4/conf/*/force_igmp_version allows the
IGMP protocol version to use to be explicitly set.  As a side effect this
caused the routing cache to be flushed as it was declared as a
DEVINET_SYSCTL_FLUSHING_ENTRY.  Flushing is unnecessary and this patch
makes it so flushing does not occur.

Requested by Hannes Frederic Sowa as he was reviewing other patches
adding procfs entries.

Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: William Manley <william.manley@youview.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-09 11:27:46 -07:00
Florian Westphal c655bc6896 netfilter: nf_conntrack: don't send destroy events from iterator
Let nf_ct_delete handle delivery of the DESTROY event.

Based on earlier patch from Pablo Neira.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-08-09 12:03:33 +02:00
Eric Dumazet 1f07d03e20 net: add SNMP counters tracking incoming ECN bits
With GRO/LRO processing, there is a problem because Ip[6]InReceives SNMP
counters do not count the number of frames, but number of aggregated
segments.

Its probably too late to change this now.

This patch adds four new counters, tracking number of frames, regardless
of LRO/GRO, and on a per ECN status basis, for IPv4 and IPv6.

Ip[6]NoECTPkts : Number of packets received with NOECT
Ip[6]ECT1Pkts  : Number of packets received with ECT(1)
Ip[6]ECT0Pkts  : Number of packets received with ECT(0)
Ip[6]CEPkts    : Number of packets received with Congestion Experienced

lph37:~# nstat | egrep "Pkts|InReceive"
IpInReceives                    1634137            0.0
Ip6InReceives                   3714107            0.0
Ip6InNoECTPkts                  19205              0.0
Ip6InECT0Pkts                   52651828           0.0
IpExtInNoECTPkts                33630              0.0
IpExtInECT0Pkts                 15581379           0.0
IpExtInCEPkts                   6                  0.0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-08 22:24:59 -07:00
Oleg Nesterov 8742f229b6 userns: limit the maximum depth of user_namespace->parent chain
Ensure that user_namespace->parent chain can't grow too much.
Currently we use the hardroded 32 as limit.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-08 13:11:39 -07:00
Linus Torvalds d56290bbc1 regmap: Fixes for v3.11
Two things here, one is a fix for a nasty issue where we were failing to
 sync the last register in a block when using raw writes and the other
 fixes a missing header for the !REGMAP stubs so that we don't rely on
 implicit includes in that case.
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Merge tag 'regmap-v3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "Two things here, one is a fix for a nasty issue where we were failing
  to sync the last register in a block when using raw writes and the
  other fixes a missing header for the !REGMAP stubs so that we don't
  rely on implicit includes in that case"

* tag 'regmap-v3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Add missing header for !CONFIG_REGMAP stubs
  regmap: cache: Make sure to sync the last register in a block
2013-08-08 09:34:04 -07:00
Jason Wang c3bdeb5c7c net: move zerocopy_sg_from_iovec() to net/core/datagram.c
To let it be reused and reduce code duplication. Also document this function.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-07 16:52:34 -07:00
Jason Wang b4bf07771f net: move iov_pages() to net/core/iovec.c
To let it be reused and reduce code duplication.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-07 16:52:33 -07:00
stephen hemminger 6261d983f2 ip_tunnel: embed hash list head
The IP tunnel hash heads can be embedded in the per-net structure
since it is a fixed size. Reduce the size so that the total structure
fits in a page size. The original size was overly large, even NETDEV_HASHBITS
is only 8 bits!

Also, add some white space for readability.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Pravin B Shelar <pshelar@nicira.com>.
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-07 16:47:52 -07:00
Trond Myklebust 786615bc1c SUNRPC: If the rpcbind channel is disconnected, fail the call to unregister
If rpcbind causes our connection to the AF_LOCAL socket to close after
we've registered a service, then we want to be careful about reconnecting
since the mount namespace may have changed.

By simply refusing to reconnect the AF_LOCAL socket in the case of
unregister, we avoid the need to somehow save the mount namespace. While
this may lead to some services not unregistering properly, it should
be safe.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Nix <nix@esperi.org.uk>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: stable@vger.kernel.org # 3.9.x
2013-08-07 17:07:18 -04:00
Rafael J. Wysocki 60f75b8e97 ACPI: Try harder to resolve _ADR collisions for bridges
In theory, under a given ACPI namespace node there should be only
one child device object with _ADR whose value matches a given bus
address exactly.  In practice, however, there are systems in which
multiple child device objects under a given parent have _ADR matching
exactly the same address.  In those cases we use _STA to determine
which of the multiple matching devices is enabled, since some systems
are known to indicate which ACPI device object to associate with the
given physical (usually PCI) device this way.

Unfortunately, as it turns out, there are systems in which many
device objects under the same parent have _ADR matching exactly the
same bus address and none of them has _STA, in which case they all
should be regarded as enabled according to the spec.  Still, if
those device objects are supposed to represent bridges (e.g. this
is the case for device objects corresponding to PCIe ports), we can
try harder and skip the ones that have no child device objects in the
ACPI namespace.  With luck, we can avoid using device objects that we
are not expected to use this way.

Although this only works for bridges whose children also have ACPI
namespace representation, it is sufficient to address graphics
adapter detection issues on some systems, so rework the code finding
a matching device ACPI handle for a given bus address to implement
this idea.

Introduce a new function, acpi_find_child(), taking three arguments:
the ACPI handle of the device's parent, a bus address suitable for
the device's bus type and a bool indicating if the device is a
bridge and make it work as outlined above.  Reimplement the function
currently used for this purpose, acpi_get_child(), as a call to
acpi_find_child() with the last argument set to 'false' and make
the PCI subsystem use acpi_find_child() with the bridge information
passed as the last argument to it.  [Lan Tianyu notices that it is
not sufficient to use pci_is_bridge() for that, because the device's
subordinate pointer hasn't been set yet at this point, so use
hdr_type instead.]

This change fixes a regression introduced inadvertently by commit
33f767d (ACPI: Rework acpi_get_child() to be more efficient) which
overlooked the fact that for acpi_walk_namespace() "post-order" means
"after all children have been visited" rather than "on the way back",
so for device objects without children and for namespace walks of
depth 1, as in the acpi_get_child() case, the "post-order" callbacks
ordering is actually the same as the ordering of "pre-order" ones.
Since that commit changed the namespace walk in acpi_get_child() to
terminate after finding the first matching object instead of going
through all of them and returning the last one, it effectively
changed the result returned by that function in some rare cases and
that led to problems (the switch from a "pre-order" to a "post-order"
callback was supposed to prevent that from happening, but it was
ineffective).

As it turns out, the systems where the change made by commit
33f767d actually matters are those where there are multiple ACPI
device objects representing the same PCIe port (which effectively
is a bridge).  Moreover, only one of them, and the one we are
expected to use, has child device objects in the ACPI namespace,
so the regression can be addressed as described above.

References: https://bugzilla.kernel.org/show_bug.cgi?id=60561
Reported-by: Peter Wu <lekensteyn@gmail.com>
Tested-by: Vladimir Lalov <mail@vlalov.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: 3.9+ <stable@vger.kernel.org> # 3.9+
2013-08-07 22:55:00 +02:00
Linus Torvalds b7bc9e7d80 Oleg Nesterov has been working hard in closing all the holes that can
lead to race conditions between deleting an event and accessing an event
 debugfs file. This included a fix to the debugfs system (acked by
 Greg Kroah-Hartman). We think that all the holes have been patched and
 hopefully we don't find more. I haven't marked all of them for stable
 because I need to examine them more to figure out how far back some of
 the changes need to go.
 
 Along the way, some other fixes have been made. Alexander Z Lam fixed
 some logic where the wrong buffer was being modifed.
 
 Andrew Vagin found a possible corruption for machines that actually
 allocate cpumask, as a reference to one was being zeroed out by mistake.
 
 Dhaval Giani found a bad prototype when tracing is not configured.
 
 And I not only had some changes to help Oleg, but also finally fixed
 a long standing bug that Dave Jones and others have been hitting, where
 a module unload and reload can cause the function tracing accounting
 to get screwed up.
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Merge tag 'trace-fixes-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Oleg Nesterov has been working hard in closing all the holes that can
  lead to race conditions between deleting an event and accessing an
  event debugfs file.  This included a fix to the debugfs system (acked
  by Greg Kroah-Hartman).  We think that all the holes have been patched
  and hopefully we don't find more.  I haven't marked all of them for
  stable because I need to examine them more to figure out how far back
  some of the changes need to go.

  Along the way, some other fixes have been made.  Alexander Z Lam fixed
  some logic where the wrong buffer was being modifed.

  Andrew Vagin found a possible corruption for machines that actually
  allocate cpumask, as a reference to one was being zeroed out by
  mistake.

  Dhaval Giani found a bad prototype when tracing is not configured.

  And I not only had some changes to help Oleg, but also finally fixed a
  long standing bug that Dave Jones and others have been hitting, where
  a module unload and reload can cause the function tracing accounting
  to get screwed up"

* tag 'trace-fixes-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix reset of time stamps during trace_clock changes
  tracing: Make TRACE_ITER_STOP_ON_FREE stop the correct buffer
  tracing: Fix trace_dump_stack() proto when CONFIG_TRACING is not set
  tracing: Fix fields of struct trace_iterator that are zeroed by mistake
  tracing/uprobes: Fail to unregister if probe event files are in use
  tracing/kprobes: Fail to unregister if probe event files are in use
  tracing: Add comment to describe special break case in probe_remove_event_call()
  tracing: trace_remove_event_call() should fail if call/file is in use
  debugfs: debugfs_remove_recursive() must not rely on list_empty(d_subdirs)
  ftrace: Check module functions being traced on reload
  ftrace: Consolidate some duplicate code for updating ftrace ops
  tracing: Change remove_event_file_dir() to clear "d_subdirs"->i_private
  tracing: Introduce remove_event_file_dir()
  tracing: Change f_start() to take event_mutex and verify i_private != NULL
  tracing: Change event_filter_read/write to verify i_private != NULL
  tracing: Change event_enable/disable_read() to verify i_private != NULL
  tracing: Turn event/id->i_private into call->event.type
2013-08-07 13:01:30 -07:00
Mateusz Krawczuk 49ccc142f9 regmap: Add missing header for !CONFIG_REGMAP stubs
regmap.h requires linux/err.h if CONFIG_REGMAP is not defined. Without it I get
error.
CC      drivers/media/platform/exynos4-is/fimc-reg.o
In file included from drivers/media/platform/exynos4-is/fimc-reg.c:14:0:
include/linux/regmap.h: In function ‘regmap_write’:
include/linux/regmap.h:525:10: error: ‘EINVAL’ undeclared (first use in this function)
include/linux/regmap.h:525:10: note: each undeclared identifier is reported only once for each function it appears in

Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@kernel.org
2013-08-06 19:49:46 +01:00
Rafael J. Wysocki 007ccfcf89 ACPI: Drop physical_node_id_bitmap from struct acpi_device
The physical_node_id_bitmap in struct acpi_device is only used for
looking up the first currently unused dependent phyiscal node ID
by acpi_bind_one().  It is not really necessary, however, because
acpi_bind_one() walks the entire physical_node_list of the given
device object for sanity checking anyway and if that list is always
sorted by node_id, it is straightforward to find the first gap
between the currently used node IDs and use that number as the ID
of the new list node.

This also removes the artificial limit of the maximum number of
dependent physical devices per ACPI device object, which now depends
only on the capacity of unsigend int.  As a result, it fixes a
regression introduced by commit e2ff394 (ACPI / memhotplug: Bind
removable memory blocks to ACPI device nodes) that caused
acpi_memory_enable_device() to fail when the number of 128 MB blocks
within one removable memory module was greater than 32.

Reported-and-tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
2013-08-06 14:32:54 +02:00
Johannes Berg e7f1935c11 wireless: make TU conversion macros available
A few places in the code (mac80211 and iwlmvm) use the same
TU_TO_JIFFIES() macro and could use TU_TO_EXP_TIME() that
mac80211 has. Make these available to everyone and use them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-06 11:00:59 +02:00
fan.du 5a139296f8 sctp: Pack dst_cookie into 1st cacheline hole for 64bit host
As dst_cookie is used in fast path sctp_transport_dst_check.

Before:
struct sctp_transport {
	struct list_head           transports;           /*     0    16 */
	atomic_t                   refcnt;               /*    16     4 */
	__u32                      dead:1;               /*    20:31  4 */
	__u32                      rto_pending:1;        /*    20:30  4 */
	__u32                      hb_sent:1;            /*    20:29  4 */
	__u32                      pmtu_pending:1;       /*    20:28  4 */

	/* XXX 28 bits hole, try to pack */

	__u32                      sack_generation;      /*    24     4 */

	/* XXX 4 bytes hole, try to pack */

	struct flowi               fl;                   /*    32    64 */
	/* --- cacheline 1 boundary (64 bytes) was 32 bytes ago --- */
	union sctp_addr            ipaddr;               /*    96    28 */

After:
struct sctp_transport {
	struct list_head           transports;           /*     0    16 */
	atomic_t                   refcnt;               /*    16     4 */
	__u32                      dead:1;               /*    20:31  4 */
	__u32                      rto_pending:1;        /*    20:30  4 */
	__u32                      hb_sent:1;            /*    20:29  4 */
	__u32                      pmtu_pending:1;       /*    20:28  4 */

	/* XXX 28 bits hole, try to pack */

	__u32                      sack_generation;      /*    24     4 */
	u32                        dst_cookie;           /*    28     4 */
	struct flowi               fl;                   /*    32    64 */
	/* --- cacheline 1 boundary (64 bytes) was 32 bytes ago --- */
	union sctp_addr            ipaddr;               /*    96    28 */

Signed-off-by: Fan Du <fan.du@windriver.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-05 12:20:51 -07:00
Eli Cohen 7d46daba8d mlx5: remove health handler plugin
Remove this code, per Dave Miller's request, since it is not being used
anywhere in the kernel.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-05 11:04:12 -07:00
Mathias Krause e473fcb472 xfrm: constify mark argument of xfrm_find_acq()
The mark argument is read only, so constify it. Also make dummy_mark in
af_key const -- only used as dummy argument for this very function.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-08-05 11:13:53 +02:00
Greg Kroah-Hartman cefe8a32f2 Second round of IIO fixes for the 3.11 cycle.
1) Fix a long term race in the IIO trigger handling.
    This only effects cases where a single trigger is in use
    by multiple devices.
 2) ti_am335x fix an issue with incorrect data due to reading before
    the sequencer is finished.
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Merge tag 'iio-fixes-for-3.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Second round of IIO fixes for the 3.11 cycle.

1) Fix a long term race in the IIO trigger handling.
   This only effects cases where a single trigger is in use
   by multiple devices.
2) ti_am335x fix an issue with incorrect data due to reading before
   the sequencer is finished.
2013-08-05 14:04:24 +08:00
Eliezer Tamir bf37d2b3fd busy_poll: cleanup do-nothing placeholders
When renaming ll_poll to busy poll, I introduced a typo
in the name of the do-nothing placeholder for sk_busy_loop
and called it sk_busy_poll.
This broke compile when busy poll was not configured.
Cong Wang submitted a patch to fixed that.
This patch removes the now redundant, misspelled placeholder.

Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-04 19:41:27 -07:00
David S. Miller 0e76a3a587 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge net into net-next to setup some infrastructure Eric
Dumazet needs for usbnet changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-03 21:36:46 -07:00
Linus Torvalds 72a67a94bc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Don't ignore user initiated wireless regulatory settings on cards
    with custom regulatory domains, from Arik Nemtsov.

 2) Fix length check of bluetooth information responses, from Jaganath
    Kanakkassery.

 3) Fix misuse of PTR_ERR in btusb, from Adam Lee.

 4) Handle rfkill properly while iwlwifi devices are offline, from
    Emmanuel Grumbach.

 5) Fix r815x devices DMA'ing to stack buffers, from Hayes Wang.

 6) Kernel info leak in ATM packet scheduler, from Dan Carpenter.

 7) 8139cp doesn't check for DMA mapping errors, from Neil Horman.

 8) Fix bridge multicast code to not snoop when no querier exists,
    otherwise mutlicast traffic is lost.  From Linus Lüssing.

 9) Avoid soft lockups in fib6_run_gc(), from Michal Kubecek.

10) Fix races in automatic address asignment on ipv6, which can result
    in incorrect lifetime assignments.  From Jiri Benc.

11) Cure build bustage when CONFIG_NET_LL_RX_POLL is not set and rename
    it CONFIG_NET_RX_BUSY_POLL to eliminate the last reference to the
    original naming of this feature.  From Cong Wang.

12) Fix crash in TIPC when server socket creation fails, from Ying Xue.

13) macvlan_changelink() silently succeeds when it shouldn't, from
    Michael S Tsirkin.

14) HTB packet scheduler can crash due to sign extension, fix from
    Stephen Hemminger.

15) With the cable unplugged, r8169 prints out a message every 10
    seconds, make it netif_dbg() instead of netif_warn().  From Peter
    Wu.

16) Fix memory leak in rtm_to_ifaddr(), from Daniel Borkmann.

17) sis900 gets spurious TX queue timeouts due to mismanagement of link
    carrier state, from Denis Kirjanov.

18) Validate somaxconn sysctl to make sure it fits inside of a u16.
    From Roman Gushchin.

19) Fix MAC address filtering on qlcnic, from Shahed Shaikh.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (68 commits)
  qlcnic: Fix for flash update failure on 83xx adapter
  qlcnic: Fix link speed and duplex display for 83xx adapter
  qlcnic: Fix link speed display for 82xx adapter
  qlcnic: Fix external loopback test.
  qlcnic: Removed adapter series name from warning messages.
  qlcnic: Free up memory in error path.
  qlcnic: Fix ingress MAC learning
  qlcnic: Fix MAC address filter issue on 82xx adapter
  net: ethernet: davinci_emac: drop IRQF_DISABLED
  netlabel: use domain based selectors when address based selectors are not available
  net: check net.core.somaxconn sysctl values
  sis900: Fix the tx queue timeout issue
  net: rtm_to_ifaddr: free ifa if ifa_cacheinfo processing fails
  r8169: remove "PHY reset until link up" log spam
  net: ethernet: cpsw: drop IRQF_DISABLED
  htb: fix sign extension bug
  macvlan: handle set_promiscuity failures
  macvlan: better mode validation
  tipc: fix oops when creating server socket fails
  net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
  ...
2013-08-03 15:00:23 -07:00
Eric Dumazet fba3679d34 fib_rules: reorder struct fib_rules fields
Move refcnt, pref, suppress_ifgroup, suppress_prefixlen out of first
cache line, as they are not used in fast path.

Make sure ctarget & fr_net are in first cache line.

(Assuming 64 bit arches and 64 bytes cache lines)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-03 11:53:54 -07:00
Stefan Tomanek 73f5698e77 fib_rules: fix suppressor names and default values
This change brings the suppressor attribute names into line; it also changes
the data types to provide a more consistent interface.

While -1 indicates that the suppressor is not enabled, values >= 0 for
suppress_prefixlen or suppress_ifgroup  reject routing decisions violating the
constraint.

This changes the previously presented behaviour of suppress_prefixlen, where a
prefix length _less_ than the attribute value was rejected. After this change,
a prefix length less than *or* equal to the value is considered a violation of
the rule constraint.

It also changes the default values for default and newly added rules (disabling
any suppression for those).

Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-03 10:40:23 -07:00
Dhaval Giani e67bc51e57 tracing: Fix trace_dump_stack() proto when CONFIG_TRACING is not set
When CONFIG_TRACING is not enabled, the stub prototype for trace_dump_stack()
is incorrect. It has (void) when it should be (int).

Link: http://lkml.kernel.org/r/CAPhKKr_H=ukFnBL4WgDOVT5ay2xeF-Ho+CA0DWZX0E2JW-=vSQ@mail.gmail.com

Signed-off-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-08-02 22:38:10 -04:00
Andrew Vagin ed5467da0e tracing: Fix fields of struct trace_iterator that are zeroed by mistake
tracing_read_pipe zeros all fields bellow "seq". The declaration contains
a comment about that, but it doesn't help.

The first field is "snapshot", it's true when current open file is
snapshot. Looks obvious, that it should not be zeroed.

The second field is "started". It was converted from cpumask_t to
cpumask_var_t (v2.6.28-4983-g4462344), in other words it was
converted from cpumask to pointer on cpumask.

Currently the reference on "started" memory is lost after the first read
from tracing_read_pipe and a proper object will never be freed.

The "started" is never dereferenced for trace_pipe, because trace_pipe
can't have the TRACE_FILE_ANNOTATE options.

Link: http://lkml.kernel.org/r/1375463803-3085183-1-git-send-email-avagin@openvz.org

Cc: stable@vger.kernel.org # 2.6.30
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-08-02 22:28:41 -04:00