Commit graph

35755 commits

Author SHA1 Message Date
Alexander Aring
986a8abfc5 mac802154: move interface add handling in iface
This patch moves and renames the mac802154_add_iface and
mac802154_netdev_register functions into iface.c. The function
mac802154_add_iface is renamed to ieee802154_if_add which is a similar naming
convention like mac80211.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Alexander Aring
b210b18747 mac802154: move interface del handling in iface
This patch moves and rename the mac802154_del_iface function into
iface.c and rename the function to ieee802154_if_remove which is a similar
naming convention like mac80211.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Alexander Aring
9f3295b9ea ieee802154: remove nl802154 unused functions
The include/net/nl802154.h file contains a lot of prototypes which are
not used inside of ieee802154 subsystem. This patch removes this file
and make the only one used prototype "ieee802154_nl_start_confirm" as
static declaration in ieee802154/nl-mac.c

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Alexander Aring
53f9ee61b4 ieee802154: rework wpan_phy index assignment
This patch reworks the wpan_phy index incrementation. It's now similar
like wireless wiphy index incrementation. We move the wpan_phy index
attribute inside of cfg802154_registered_device and use atomic
operations instead locking mechanism via wpan_phy_mutex.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:03 +01:00
Jesse Gross
d3ca9eafc0 geneve: Unregister pernet subsys on module unload.
The pernet ops aren't ever unregistered, which causes a memory
leak and an OOPs if the module is ever reinserted.

Fixes: 0b5e8b8eea ("net: Add Geneve tunneling protocol driver")
CC: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 15:00:51 -05:00
Jesse Gross
45cac46e51 geneve: Set GSO type on transmit.
Geneve does not currently set the inner protocol type when
transmitting packets. This causes GSO segmentation to fail on NICs
that do not support Geneve offloading.

CC: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 15:00:51 -05:00
Steven Rostedt (Red Hat)
e71456ae98 netfilter: Remove checks of seq_printf() return values
The return value of seq_printf() is soon to be removed. Remove the
checks from seq_printf() in favor of seq_has_overflowed().

Link: http://lkml.kernel.org/r/20141104142236.GA10239@salvia
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-05 14:11:02 -05:00
Joe Perches
824f1fbee7 netfilter: Convert print_tuple functions to return void
Since adding a new function to seq_file (seq_has_overflowed())
there isn't any value for functions called from seq_show to
return anything.   Remove the int returns of the various
print_tuple/<foo>_print_tuple functions.

Link: http://lkml.kernel.org/p/f2e8cf8df433a197daa62cbaf124c900c708edc7.1412031505.git.joe@perches.com

Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-05 14:10:33 -05:00
Steven Rostedt (Red Hat)
37246a5837 netfilter: Remove return values for print_conntrack callbacks
The seq_printf() and friends are having their return values removed.
The print_conntrack() returns the result of seq_printf(), which is
meaningless when seq_printf() returns void. Might as well remove the
return values of print_conntrack() as well.

Link: http://lkml.kernel.org/r/20141029220107.465008329@goodmis.org
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-11-05 14:09:47 -05:00
Fabian Frederick
6cf1093e58 udp: remove blank line between set and test
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 17:12:10 -05:00
Florent Fourcot
869ba988fe ipv6: trivial, add bracket for the if block
The "else" block is on several lines and use bracket.

Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 17:10:19 -05:00
Fabian Frederick
05006e8c59 esp4: remove assignment in if condition
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 16:57:49 -05:00
John W. Linville
bf515fb11a This relatively large batch of changes is comprised of the
following:
  * large mac80211-hwsim changes from Ben, Jukka and a bit myself
  * OCB/WAVE/11p support from Rostislav on behalf of the Czech Technical
    University in Prague and Volkswagen Group Research
  * minstrel VHT work from Karl
  * more CSA work from Luca
  * WMM admission control support in mac80211 (myself)
  * various smaller fixes, spelling corrections, and minor API additions
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Merge tag 'mac80211-next-for-john-2014-11-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg <johannes@sipsolutions.net> says:

"This relatively large batch of changes is comprised of the
following:
 * large mac80211-hwsim changes from Ben, Jukka and a bit myself
 * OCB/WAVE/11p support from Rostislav on behalf of the Czech Technical
   University in Prague and Volkswagen Group Research
 * minstrel VHT work from Karl
 * more CSA work from Luca
 * WMM admission control support in mac80211 (myself)
 * various smaller fixes, spelling corrections, and minor API additions"

Conflicts:
	drivers/net/wireless/ath/wil6210/cfg80211.c

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-04 16:18:12 -05:00
Florian Westphal
f7b3bec6f5 net: allow setting ecn via routing table
This patch allows to set ECN on a per-route basis in case the sysctl
tcp_ecn is not set to 1. In other words, when ECN is set for specific
routes, it provides a tcp_ecn=1 behaviour for that route while the rest
of the stack acts according to the global settings.

One can use 'ip route change dev $dev $net features ecn' to toggle this.

Having a more fine-grained per-route setting can be beneficial for various
reasons, for example, 1) within data centers, or 2) local ISPs may deploy
ECN support for their own video/streaming services [1], etc.

There was a recent measurement study/paper [2] which scanned the Alexa's
publicly available top million websites list from a vantage point in US,
Europe and Asia:

Half of the Alexa list will now happily use ECN (tcp_ecn=2, most likely
blamed to commit 255cac91c3 ("tcp: extend ECN sysctl to allow server-side
only ECN") ;)); the break in connectivity on-path was found is about
1 in 10,000 cases. Timeouts rather than receiving back RSTs were much
more common in the negotiation phase (and mostly seen in the Alexa
middle band, ranks around 50k-150k): from 12-thousand hosts on which
there _may_ be ECN-linked connection failures, only 79 failed with RST
when _not_ failing with RST when ECN is not requested.

It's unclear though, how much equipment in the wild actually marks CE
when buffers start to fill up.

We thought about a fallback to non-ECN for retransmitted SYNs as another
global option (which could perhaps one day be made default), but as Eric
points out, there's much more work needed to detect broken middleboxes.

Two examples Eric mentioned are buggy firewalls that accept only a single
SYN per flow, and middleboxes that successfully let an ECN flow establish,
but later mark CE for all packets (so cwnd converges to 1).

 [1] http://www.ietf.org/proceedings/89/slides/slides-89-tsvarea-1.pdf, p.15
 [2] http://ecn.ethz.ch/

Joint work with Daniel Borkmann.

Reference: http://thread.gmane.org/gmane.linux.network/335797
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 16:06:09 -05:00
Florian Westphal
f1673381b1 syncookies: split cookie_check_timestamp() into two functions
The function cookie_check_timestamp(), both called from IPv4/6 context,
is being used to decode the echoed timestamp from the SYN/ACK into TCP
options used for follow-up communication with the peer.

We can remove ECN handling from that function, split it into a separate
one, and simply rename the original function into cookie_decode_options().
cookie_decode_options() just fills in tcp_option struct based on the
echoed timestamp received from the peer. Anything that fails in this
function will actually discard the request socket.

While this is the natural place for decoding options such as ECN which
commit 172d69e63c ("syncookies: add support for ECN") added, we argue
that in particular for ECN handling, it can be checked at a later point
in time as the request sock would actually not need to be dropped from
this, but just ECN support turned off.

Therefore, we split this functionality into cookie_ecn_ok(), which tells
us if the timestamp indicates ECN support AND the tcp_ecn sysctl is enabled.

This prepares for per-route ECN support: just looking at the tcp_ecn sysctl
won't be enough anymore at that point; if the timestamp indicates ECN
and sysctl tcp_ecn == 0, we will also need to check the ECN dst metric.

This would mean adding a route lookup to cookie_check_timestamp(), which
we definitely want to avoid. As we already do a route lookup at a later
point in cookie_{v4,v6}_check(), we can simply make use of that as well
for the new cookie_ecn_ok() function w/o any additional cost.

Joint work with Daniel Borkmann.

Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 16:06:09 -05:00
Florian Westphal
274e2da0ec syncookies: avoid magic values and document which-bit-is-what-option
Was a bit more difficult to read than needed due to magic shifts;
add defines and document the used encoding scheme.

Joint work with Daniel Borkmann.

Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 16:06:08 -05:00
Mika Westerberg
72daceb9a1 net: rfkill: gpio: Add default GPIO driver mappings for ACPI
The driver uses devm_gpiod_get_index(..., index) so that the index refers
directly to the GpioIo resource under the ACPI device. The problem with
this is that if the ordering changes we get wrong GPIOs.

With ACPI 5.1 _DSD we can now use names instead to reference GPIOs
analogous to Device Tree. However, we still have systems out there that do
not provide _DSD at all. These systems must be supported as well.

Luckily we now have acpi_dev_add_driver_gpios() that can be used to provide
mappings for systems where _DSD is not provided and still take advantage of
_DSD if it exists.

This patch changes the driver to create default GPIO mappings if we are
running on ACPI system.

While there we can drop the indices completely and use devm_gpiod_get()
with name instead.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-11-04 21:58:24 +01:00
John W. Linville
0c9a67c8f1 This contains another small set of fixes for 3.18, these are all
over the place and most of the bugs are old, one even dates back
 to the original mac80211 we merged into the kernel.
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Merge tag 'mac80211-for-john-2014-11-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg <johannes@sipsolutions.net> says:

"This contains another small set of fixes for 3.18, these are all
over the place and most of the bugs are old, one even dates back
to the original mac80211 we merged into the kernel."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-04 15:56:33 -05:00
Fabian Frederick
436f7c2068 igmp: remove camel case definitions
use standard uppercase for definitions

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:13:18 -05:00
Fabian Frederick
c18450a52a udp: remove else after return
else is unnecessary after return 0 in __udp4_lib_rcv()

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:13:18 -05:00
Fabian Frederick
aa1f731e52 inet: frags: remove inline on static in c file
remove __inline__ / inline and let compiler decide what to do
with static functions

Inspired-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:13:18 -05:00
Fabian Frederick
0d3979b9c7 ipv4: remove 0/NULL assignment on static
static values are automatically initialized to 0

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:52 -05:00
Fabian Frederick
c9f503b006 ipv4: use seq_puts instead of seq_printf where possible
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:52 -05:00
Fabian Frederick
b92022f3e5 tcp: spelling s/plugable/pluggable
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:52 -05:00
Fabian Frederick
988b13438c cipso: remove NULL assignment on static
Also add blank line after structure declarations

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:52 -05:00
Fabian Frederick
4c787b1626 ipv4: include linux/bug.h instead of asm/bug.h
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:20 -05:00
Fabian Frederick
4973404f81 cipso: kerneldoc warning fix
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 15:09:20 -05:00
Pablo Neira Ayuso
c5a589cc30 netfilter: nf_log: fix sparse warning in nf_logger_find_get()
net/netfilter/nf_log.c:157:16: warning: incorrect type in assignment (different address spaces)
net/netfilter/nf_log.c:157:16:    expected struct nf_logger *logger
net/netfilter/nf_log.c:157:16:    got struct nf_logger [noderef] <asn:4>*<noident>

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-04 17:56:31 +01:00
Simon Vincent
980edbd503 6lowpan: fix udp header compression when using raw sockets
If you use RAW sockets the transport header offset is not set by the
ipv6 stack so when we get to the udp header compression it does not
compress the right part of the packet.

This patch adds a check for this scenario and sets the transport
header offset.

Signed-off-by: Simon Vincent <simon.vincent@xsilon.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-04 17:31:01 +01:00
Henning Rogge
1ef4c85049 cfg80211: fix nl80211 cmd id in nl80211_send_mpath()
Netlink command for nl80211_send_mpath() should be NL80211_CMD_NEW_MPATH.

Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 16:37:22 +01:00
Eliad Peller
cf2c92d840 mac80211: replace restart_complete() with reconfig_complete()
Drivers might want to know also when mac80211 has
completed reconfiguring after resume (e.g. in order
to know when frames can be passed to mac80211).

Rename restart_complete() to a more-generic reconfig_complete(),
and add a new enum to indicate the reconfiguration type.

Update the current users with the new prototype.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:49:00 +01:00
Andrei Otcheretianski
13a8098af9 mac80211: increase U-APSD max service period length
Deliver up to 128 frames during service period instead of 8 if
unlimited is specified by the client during association.
8 was just an arbitrary value; so is 128 since unlimited can
be any number.

However for large traffic bursts, increasing this value looks
reasonable. Also, it seems that a few certification tests
expect more frames to be delivered during SP.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:18:22 +01:00
Johannes Berg
8ed2874715 mac80211: handle RIC data element in reassociation request
When the RIC data element (RDE) is included in the IEs coming
from userspace for an association request, its handling is
currently broken as any IEs that are contained within it would
be split off from it and inserted again after all the IEs that
mac80211 generates (e.g. HT, VHT.)

To fix this, treat the RIC element specially, and stop after
it only when we find something that doesn't actually belong to
it. This assumes userspace is actually correctly building it,
directly after the fast BSS transition IE and before all the
others like extended capabilities.

This leaves as a potential problem the case where userspace is
building the following IEs:

[RDE] [vendor resource description] [vendor non-resource IE]

In this case, we'd erroneously consider all three IEs to be
part of the RIC data together, and not split them between the
two vendor IEs. Unfortunately, it isn't easily possible to
distinguish vendor IEs, so this isn't easy to fix. Luckily,
this case is rare as normally wpa_supplicant will include an
extended capabilities IE in the IEs, and that certainly will
break the two vendor IEs apart correctly.

Reviewed-by: Eliad Peller <eliad@wizery.com>
Reviewed-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:18:21 +01:00
Rostislav Lisovy
239281f803 mac80211: 802.11p OCB mode support
This patch adds 802.11p OCB (Outside the Context of a BSS) mode
support.

When communicating in OCB mode a mandatory wildcard BSSID
(48 '1' bits) is used.

The EDCA parameters handling function was changed to support
802.11p specific values.

The insertion of a newly discovered STAs is done in the similar way
as in the IBSS mode -- through the deferred insertion.

The OCB mode uses a periodic 'housekeeping task' for expiration of
disconnected STAs (in the similar manner as in the MESH mode).

New Kconfig option for verbose OCB debugging outputs is added.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:18:21 +01:00
Rostislav Lisovy
6e0bd6c35b cfg80211: 802.11p OCB mode handling
This patch adds new iface type (NL80211_IFTYPE_OCB) representing
the OCB (Outside the Context of a BSS) mode.
When establishing a connection to the network a cfg80211_join_ocb
function is called (particular nl80211_command is added as well).
A mandatory parameters during the ocb_join operation are 'center
frequency' and 'channel width (5/10 MHz)'.

Changes done in mac80211 are minimal possible required to avoid
many warnings (warning: enumeration value 'NL80211_IFTYPE_OCB'
not handled in switch) during compilation. Full functionality
(where needed) is added in the following patch.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:18:17 +01:00
Felix Fietkau
5b3dc42b1b mac80211: add support for driver tx power reporting
The configured tx power is often limited by hardware capabilities,
channel settings, antenna configuration, etc.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[fix tracing compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 10:15:09 +01:00
Johan Hedberg
2a68c89724 Bluetooth: Fix sparse warnings in RFCOMM
This patch fixes the following sparse warnings in rfcomm/core.c:

net/bluetooth/rfcomm/core.c:391:16: warning: dubious: x | !y
net/bluetooth/rfcomm/core.c:546:24: warning: dubious: x | !y

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-04 08:01:46 +01:00
Peter Zijlstra
ff960a7317 netdev, sched/wait: Fix sleeping inside wait event
rtnl_lock_unregistering*() take rtnl_lock() -- a mutex -- inside a
wait loop. The wait loop relies on current->state to function, but so
does mutex_lock(), nesting them makes for the inner to destroy the
outer state.

Fix this using the new wait_woken() bits.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Cong Wang <cwang@twopensource.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jerry Chu <hkchu@google.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: sfeldma@cumulusnetworks.com <sfeldma@cumulusnetworks.com>
Cc: stephen hemminger <stephen@networkplumber.org>
Cc: Tom Gundersen <teg@jklm.no>
Cc: Tom Herbert <therbert@google.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/20141029173110.GE15602@worktop.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-11-04 07:17:48 +01:00
Peter Zijlstra
eedf7e47da rfcomm, sched/wait: Fix broken wait construct
rfcomm_run() is a tad broken in that is has a nested wait loop. One
cannot rely on p->state for the outer wait because the inner wait will
overwrite it.

Fix this using the new wait_woken() facility.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Alexander Holler <holler@ahsoftware.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Joe Perches <joe@perches.com>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Libor Pechacek <lpechacek@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vignesh Raman <Vignesh_Raman@mentor.com>
Cc: linux-bluetooth@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-11-04 07:17:47 +01:00
Greg Kroah-Hartman
a8a93c6f99 Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next
Remove all .owner fields from platform drivers
2014-11-03 19:53:56 -08:00
Linus Torvalds
ce1928da84 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph fixes from Sage Weil:
 "There is a GFP flag fix from Mike Christie, an error code fix from
  Jan, and fixes for two unnecessary allocations (kmalloc and workqueue)
  from Ilya.  All are well tested.

  Ilya has one other fix on the way but it didn't get tested in time"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: eliminate unnecessary allocation in process_one_ticket()
  rbd: Fix error recovery in rbd_obj_read_sync()
  libceph: use memalloc flags for net IO
  rbd: use a single workqueue for all devices
2014-11-03 15:04:26 -08:00
Eric Dumazet
56b174256b net: add rbnode to struct sk_buff
Yaogong replaces TCP out of order receive queue by an RB tree.

As netem already does a private skb->{next/prev/tstamp} union
with a 'struct rb_node', lets do this in a cleaner way.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yaogong Wang <wygivan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 16:13:03 -05:00
Steffen Klassert
f03eb128e3 gre6: Move the setting of dev->iflink into the ndo_init functions.
Otherwise it gets overwritten by register_netdev().

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 15:42:24 -05:00
Steffen Klassert
ebe084aafb sit: Use ipip6_tunnel_init as the ndo_init function.
ipip6_tunnel_init() sets the dev->iflink via a call to
ipip6_tunnel_bind_dev(). After that, register_netdevice()
sets dev->iflink = -1. So we loose the iflink configuration
for ipv6 tunnels. Fix this by using ipip6_tunnel_init() as the
ndo_init function. Then ipip6_tunnel_init() is called after
dev->iflink is set to -1 from register_netdevice().

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 15:42:24 -05:00
Steffen Klassert
16a0231bf7 vti6: Use vti6_dev_init as the ndo_init function.
vti6_dev_init() sets the dev->iflink via a call to
vti6_link_config(). After that, register_netdevice()
sets dev->iflink = -1. So we loose the iflink configuration
for vti6 tunnels. Fix this by using vti6_dev_init() as the
ndo_init function. Then vti6_dev_init() is called after
dev->iflink is set to -1 from register_netdevice().

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 15:42:24 -05:00
Steffen Klassert
6c6151daaf ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function.
ip6_tnl_dev_init() sets the dev->iflink via a call to
ip6_tnl_link_config(). After that, register_netdevice()
sets dev->iflink = -1. So we loose the iflink configuration
for ipv6 tunnels. Fix this by using ip6_tnl_dev_init() as the
ndo_init function. Then ip6_tnl_dev_init() is called after
dev->iflink is set to -1 from register_netdevice().

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03 15:42:24 -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
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
Szymon Janc
a736abc1ac Bluetooth: Fix invalid response for 'Start Discovery' command
According to Management Interface API 'Start Discovery' command should
generate a Command Complete event on failure. Currently kernel is
sending Command Status on early errors. This results in userspace
ignoring such event due to invalid size.

bluetoothd[28499]: src/adapter.c:trigger_start_discovery()
bluetoothd[28499]: src/adapter.c:cancel_passive_scanning()
bluetoothd[28499]: src/adapter.c:start_discovery_timeout()
bluetoothd[28499]: src/adapter.c:start_discovery_complete() status 0x0a
bluetoothd[28499]: Wrong size of start discovery return parameters

Reported-by: Jukka Taimisto <jtt@codenomicon.com>
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-11-03 15:43:05 +02:00
Johannes Berg
b8fff407a1 mac80211: fix use-after-free in defragmentation
Upon receiving the last fragment, all but the first fragment
are freed, but the multicast check for statistics at the end
of the function refers to the current skb (the last fragment)
causing a use-after-free bug.

Since multicast frames cannot be fragmented and we check for
this early in the function, just modify that check to also
do the accounting to fix the issue.

Cc: stable@vger.kernel.org
Reported-by: Yosef Khyal <yosefx.khyal@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-03 14:28:50 +01:00