8 years agominstrel_ht: fixed rate mode through debugfs
Zefir Kurtisi [Fri, 20 May 2011 18:29:17 +0000]
minstrel_ht: fixed rate mode through debugfs

Found several threads about fixed rate mode in minstrel_ht for test
environments, but no patches for it.

This patch provides such a mode through debugfs.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agonl80211: add testmode dump support
Wey-Yi Guy [Fri, 20 May 2011 16:05:54 +0000]
nl80211: add testmode dump support

This adds dump support to testmode. The testmode
dump support in nl80211 requires using two of the
six cb->args, the rest can be used by the driver
to figure out where the dump position is at or to
store other data across invocations.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: Handle IBSS status changes in BSS_CHANGED_IBSS
Rajkumar Manoharan [Fri, 20 May 2011 12:22:12 +0000]
ath9k: Handle IBSS status changes in BSS_CHANGED_IBSS

Configure ibss node's bss_changes under BSS_CHANGED_IBSS.
And also start/stop ani timer only if the station join/leave
the group.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: Remove ATH9K_BEACON_PERIOD mask
Rajkumar Manoharan [Fri, 20 May 2011 12:22:11 +0000]
ath9k: Remove ATH9K_BEACON_PERIOD mask

Earlier beacon_interval is used to hold interval value and
some flags (ATH9K_BEACON_ENA &ATH9K_BEACON_PERIOD). So to
extract interval ATH9K_BEACON_PERIOD is used. Those flags
were completely removed. So masking beacon_interval is
not required.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agobcma: host pci: implement block R/W operations
Rafał Miłecki [Fri, 20 May 2011 01:27:06 +0000]
bcma: host pci: implement block R/W operations

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: add helpers for checking host type
Rafał Miłecki [Thu, 19 May 2011 13:11:27 +0000]
b43: bus: add helpers for checking host type

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: use new pointers path to access ssb_device in SSB specific places
Rafał Miłecki [Thu, 19 May 2011 13:11:26 +0000]
b43: use new pointers path to access ssb_device in SSB specific places

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: SDIO: use new pointers path to access ssb_device
Rafał Miłecki [Thu, 19 May 2011 13:11:25 +0000]
b43: SDIO: use new pointers path to access ssb_device

SDIO code is SSB specific, we can safely just use "sdev"

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: LP-PHY: use new pointers path to access ssb_device
Rafał Miłecki [Thu, 19 May 2011 13:11:24 +0000]
b43: LP-PHY: use new pointers path to access ssb_device

LP-PHY code is SSB specific, add check for bus type.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: mark few functions as static
Mohammed Shafi Shajakhan [Thu, 19 May 2011 12:38:57 +0000]
ath9k: mark few functions as static

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: make ath9k_setpower function as static
Mohammed Shafi Shajakhan [Thu, 19 May 2011 12:10:46 +0000]
ath9k: make ath9k_setpower function as static

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agobcma: pci: implement interrupts control
Rafał Miłecki [Thu, 19 May 2011 12:08:22 +0000]
bcma: pci: implement interrupts control

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k_hw: remove ath9k_hw_get_desc_link
Felix Fietkau [Thu, 19 May 2011 10:20:26 +0000]
ath9k_hw: remove ath9k_hw_get_desc_link

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: unify edma and non-edma tx code, improve tx fifo handling
Felix Fietkau [Thu, 19 May 2011 10:20:25 +0000]
ath9k: unify edma and non-edma tx code, improve tx fifo handling

EDMA based chips (AR9380+) have 8 Tx FIFO slots, which are used to fix the
tx queue start/stop race conditions which have to be worked around for
earlier chips by keeping the last descriptor in the queue. The current code
stores all frames that do not fit onto the 8 FIFO slots in a separate
list. Whenever a FIFO slot is freed up, the next frame (or A-MPDU) from the
pending queue gets moved to that slot.

This process is not only inefficient, but also unnecessary. The code can
be improved visibly by keeping the pending queue fully linked, and moving
the contents of the entire queue to a FIFO slot as it becomes available.

This patch makes the necessary changes for that and also merges some code
that was duplicated for EDMA vs non-EDMA. It changes txq->axq_link to point
to the last descriptor instead of the link pointer, so that
ath9k_hw_set_desc_link can be used, which works on all chips.

With this patch, a small performance increase for non-aggregated traffic
was observed on AR9380 based embedded hardware.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: remove redundant if check
Mohammed Shafi Shajakhan [Thu, 19 May 2011 09:35:46 +0000]
ath9k: remove redundant if check

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomac80211_hwsim driver support userspace frame tx/rx
Javier Lopez [Wed, 1 Jun 2011 09:26:13 +0000]
mac80211_hwsim driver support userspace frame tx/rx

This patch adds to mac80211_hwsim the capability to send traffic via
userspace.

Frame exchange between kernel and user spaces is done through generic
netlink communication protocol. A new generic netlink family
MAC80211_HWSIM is proposed, this family contains three basic commands
HWSIM_CMD_REGISTER, which is the command used to register a new
traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel
to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns
from user all the information about retransmissions, rates, rx signal,
and so on.

How it works:

Once the driver is loaded the MAC80211_HWSIM family will be registered.
In the absence of userspace daemon, the driver itselfs implements a
perfect wireless medium as it did in the past. When a daemon sends a
HWSIM_CMD_REGISTER command, the module stores the application PID, and
from this moment all frames will be sent to the registered daemon.

The user space application will be in charge of process/forward all
frames broadcast by any mac80211_hwsim radio. If the user application
is stopped, the kernel module will detect the release of the socket
and it will switch back to in-kernel perfect channel simulation.

The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME
commands sent from kernel, for each HWSIM_CMD_FRAME command the
application will try to broadcast this frame to all mac80211_hwsim
radios, however the application may decide to forward/drop this frame.
In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will
be created, all necessary attributes will be populated and the frame
will be sent back to the kernel.

Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME
command will be sent from userspace to kernel, this command contains
all the information regarding the transmission, such as number of
tries, rates, ack signal, etc.

You can find the actual implementation of wireless mediumd daemon
(wmediumd) at:

* Last version tarball: https://github.com/jlopex/cozybit/tarball/master
* Or visiting my github tree: https://github.com/jlopex/cozybit/tree

Signed-off-by: Javier Lopez <jlopex@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Enabled rt35xx device support by default.
Gertjan van Wingerde [Wed, 18 May 2011 18:26:04 +0000]
rt2x00: Enabled rt35xx device support by default.

Now that support for these devices has been added we can enable them
by default and remove the Kconfig not on support for these devices to
be non-functional.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Move rt2800_txdone and rt2800_txdone_entry_check to rt2800usb.
Gertjan van Wingerde [Wed, 18 May 2011 18:25:49 +0000]
rt2x00: Move rt2800_txdone and rt2800_txdone_entry_check to rt2800usb.

These two functions are only used by rt2800usb so they don't have to be
in rt2800lib.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Interface sequence lock doesn't have to disable interrupts.
Gertjan van Wingerde [Wed, 18 May 2011 18:25:42 +0000]
rt2x00: Interface sequence lock doesn't have to disable interrupts.

This lock is only used in the TX path and thus in process context. Therefore
we can use a much lighter spinlock variant.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Add support for RT3572/RT3592/RT3592+Bluetooth combo card
Gertjan van Wingerde [Wed, 18 May 2011 18:25:31 +0000]
rt2x00: Add support for RT3572/RT3592/RT3592+Bluetooth combo card

(based on an earlier patch submitted by Shiang)

Add support for RT3572/RT3592/RT3592+Bluetooth combo card

Signed-off-by: Shiang Tu <shiang_tu@ralinktech.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Don't disable G0 PA_PE bit in case of BT coexistence.
Gertjan van Wingerde [Wed, 18 May 2011 18:25:18 +0000]
rt2x00: Don't disable G0 PA_PE bit in case of BT coexistence.

(split off from the earlier RT35xx patch submitted by Shiang)

Signed-off-by: Shiang Tu <shiang_tu@ralinktech.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Enable PA_PE bits in TX_PIN_CFG according to active band.
Gertjan van Wingerde [Wed, 18 May 2011 18:25:05 +0000]
rt2x00: Enable PA_PE bits in TX_PIN_CFG according to active band.

(split off from the earlier RT35xx patch submitted by Shiang)

There's no point in enabling the PA_PE bits for the bands that we are
not active on.

Signed-off-by: Shiang Tu <shiang_tu@ralinktech.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agobcma: add IRQ number and pointer to DMA dev
Rafał Miłecki [Wed, 18 May 2011 09:40:22 +0000]
bcma: add IRQ number and pointer to DMA dev

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract bus and core operations
Rafał Miłecki [Wed, 18 May 2011 00:06:43 +0000]
b43: bus: abstract bus and core operations

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract board info
Rafał Miłecki [Wed, 18 May 2011 00:06:42 +0000]
b43: bus: abstract board info

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract chip info
Rafał Miłecki [Wed, 18 May 2011 00:06:41 +0000]
b43: bus: abstract chip info

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract device structs and irq
Rafał Miłecki [Wed, 18 May 2011 00:06:40 +0000]
b43: bus: abstract device structs and irq

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract SPROM
Rafał Miłecki [Wed, 18 May 2011 00:06:39 +0000]
b43: bus: abstract SPROM

SPROM is another frequently used struct. We decided to share SPROM
struct between ssb na bcma as long as we will not need any hacks.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract 80211 core info
Rafał Miłecki [Wed, 18 May 2011 00:06:38 +0000]
b43: bus: abstract 80211 core info

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: bus: abstract R/W operations
Rafał Miłecki [Wed, 18 May 2011 00:06:37 +0000]
b43: bus: abstract R/W operations

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: add bus device abstraction layer
Rafał Miłecki [Wed, 18 May 2011 00:06:36 +0000]
b43: add bus device abstraction layer

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: rename ssb_device variable in ssb specific functions
Rafał Miłecki [Wed, 18 May 2011 00:06:35 +0000]
b43: rename ssb_device variable in ssb specific functions

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into...
John W. Linville [Fri, 27 May 2011 19:18:35 +0000]
Merge git://git./linux/kernel/git/linville/wireless-next-2.6 into for-davem

8 years agonet: Kill ratelimit.h dependency in linux/net.h
David S. Miller [Fri, 27 May 2011 17:41:33 +0000]
net: Kill ratelimit.h dependency in linux/net.h

Ingo Molnar noticed that we have this unnecessary ratelimit.h
dependency in linux/net.h, which hid compilation problems from
people doing builds only with CONFIG_NET enabled.

Move this stuff out to a seperate net/net_ratelimit.h file and
include that in the only two places where this thing is needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>

8 years agonet: Add linux/sysctl.h includes where needed.
David S. Miller [Thu, 26 May 2011 20:40:37 +0000]
net: Add linux/sysctl.h includes where needed.

Several networking headers were depending upon the implicit
linux/sysctl.h include they get when including linux/net.h

Add explicit includes.

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: Kill ether_table[] declaration.
David S. Miller [Thu, 26 May 2011 20:30:57 +0000]
net: Kill ether_table[] declaration.

This got missed back in 2006 when Jes Sorensen deleted
net/ethernet/sysctl_net_ether.c

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoinetpeer: fix race in unused_list manipulations
Eric Dumazet [Thu, 26 May 2011 17:27:11 +0000]
inetpeer: fix race in unused_list manipulations

Several crashes in cleanup_once() were reported in recent kernels.

Commit d6cc1d642de9 (inetpeer: various changes) added a race in
unlink_from_unused().

One way to avoid taking unused_peers.lock before doing the list_empty()
test is to catch 0->1 refcnt transitions, using full barrier atomic
operations variants (atomic_cmpxchg() and atomic_inc_return()) instead
of previous atomic_inc() and atomic_add_unless() variants.

We then call unlink_from_unused() only for the owner of the 0->1
transition.

Add a new atomic_add_unless_return() static helper

With help from Arun Sharma.

Refs: https://bugzilla.kernel.org/show_bug.cgi?id=32772

Reported-by: Arun Sharma <asharma@fb.com>
Reported-by: Maximilian Engelhardt <maxi@daemonizer.de>
Reported-by: Yann Dupont <Yann.Dupont@univ-nantes.fr>
Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoatm: expose ATM device index in sysfs
Dan Williams [Fri, 27 May 2011 04:51:54 +0000]
atm: expose ATM device index in sysfs

It's currently exposed only through /proc which, besides requiring
screen-scraping, doesn't allow userspace to distinguish between two
identical ATM adapters with different ATM indexes.  The ATM device index
is required when using PPPoATM on a system with multiple ATM adapters.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: David Woodhouse <dwmw2@infradead.org>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'pablo/nf-2.6-updates' of git://1984.lsi.us.es/net-2.6
David S. Miller [Fri, 27 May 2011 17:04:40 +0000]
Merge branch 'pablo/nf-2.6-updates' of git://1984.lsi.us.es/net-2.6

8 years agoath9k: Fix AR9287 calibration
Adrian Chadd [Thu, 26 May 2011 17:08:04 +0000]
ath9k: Fix AR9287 calibration

The AR9287 calibration code was not being called because of an
incorrect MAC revision check.
This forced the AR9287 to use the AR9285 initial calibration code and
bypass the AR9287 code entirely.

Signed-off-by: Adrian Chadd <adrian@freebsd.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomac80211: Remove duplicate linux/slab.h include from net/mac80211/scan.c
Jesper Juhl [Thu, 26 May 2011 08:53:17 +0000]
mac80211: Remove duplicate linux/slab.h include from net/mac80211/scan.c

Commit 79f460ca49d8d5700756ab7071c951311c7f29cc add a duplicate
linux/slab.h include to net/mac80211/scan.c - remove it.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomac80211: clear local->ps_data on disassoc
Eliad Peller [Thu, 26 May 2011 08:46:37 +0000]
mac80211: clear local->ps_data on disassoc

local->ps_data wasn't cleared on disassociation, which
(in some corner cases) caused reconnections to enter
psm before association completed.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agowireless: Default to 'n' for 2 new added devices in Kconfig.
Tao Ma [Wed, 25 May 2011 01:44:05 +0000]
wireless: Default to 'n' for 2 new added devices in Kconfig.

We make oldconfig every time when a new kernel arrives, but
if we don't have such a device(I guess this is the most common
case for a new device), the default value should be 'n' so
that the kernel size we build doesn't grow up too much quickly.
For anyone who has the device, it is OK for them to turn it on
by themselves.

Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoiwl4965: fix 5GHz operation
Stanislaw Gruszka [Tue, 24 May 2011 14:28:55 +0000]
iwl4965: fix 5GHz operation

rx_status.band is used uninitialized, what disallow to work on 5GHz .

Cc: stable@kernel.org # 2.6.39+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoIPVS: bug in ip_vs_ftp, same list heaad used in all netns.
Hans Schillstrom [Tue, 24 May 2011 12:11:05 +0000]
IPVS: bug in ip_vs_ftp, same list heaad used in all netns.

When ip_vs was adapted to netns the ftp application was not adapted
in a correct way.
However this is a fix to avoid kernel errors. In the long term another solution
might be chosen.  I.e the ports that the ftp appl, uses should be per netns.

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

8 years agomac80211: stop queues before rate control updation
Rajkumar Manoharan [Fri, 20 May 2011 12:22:15 +0000]
mac80211: stop queues before rate control updation

Stop tx queues before updating rate control to ensure
proper rate selection. Otherwise packets can be transmitted
in 40 Mhz whereas hw is configured in HT20.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: set 40 Mhz rate only if hw is configured in ht40
Rajkumar Manoharan [Fri, 20 May 2011 12:22:14 +0000]
ath9k: set 40 Mhz rate only if hw is configured in ht40

Whenever there is a channel width change from 40 Mhz to 20 Mhz,
the hardware is reconfigured to ht20. Meantime before doing
the rate control updation, the packets are being transmitted are
selected rate with IEEE80211_TX_RC_40_MHZ_WIDTH.

While transmitting ht40 rate packets in ht20 mode is causing
baseband panic with AR9003 based chips.

==== BB update: BB status=0x02001109 ====
ath: ** BB state: wd=1 det=1 rdar=0 rOFDM=1 rCCK=1 tOFDM=0 tCCK=0 agc=2
src=0 **
ath: ** BB WD cntl: cntl1=0xffff0085 cntl2=0x00000004 **
ath: ** BB mode: BB_gen_controls=0x000033c0 **
ath: ** BB busy times: rx_clear=99%, rx_frame=0%, tx_frame=0% **
ath: ==== BB update: done ====

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k_hw: disable phy restart on baseband panic caused by RXSM
Rajkumar Manoharan [Fri, 20 May 2011 12:22:13 +0000]
ath9k_hw: disable phy restart on baseband panic caused by RXSM

While receiving unsupported rate frame rx state machine
gets into a state 0xb and if phy_restart happens in that
state, BB would go hang. If RXSM is in 0xb state after
first bb panic, ensure to disable the phy_restart.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoath9k: Reset chip on baseband hang
Rajkumar Manoharan [Fri, 20 May 2011 12:22:10 +0000]
ath9k: Reset chip on baseband hang

Resetting hardware helps to recover from baseband
hang/panic for AR9003 based chips.

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agob43: N-PHY: initialize last var in calibration function
Rafał Miłecki [Thu, 19 May 2011 23:04:46 +0000]
b43: N-PHY: initialize last var in calibration function

Reported-by: Larry Finger <larry.finger@lwfinger.net>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agortlwifi: Use order 2 RX buffer allocation only if necessary
Larry Finger [Thu, 19 May 2011 16:48:45 +0000]
rtlwifi: Use order 2 RX buffer allocation only if necessary

Although a previous fix handles the kernel panics that result from
failure to allocate a new RX buffer, memory fragmentation can be
reduced if the amsdu_8k capability is disabled as new buffers need only
be of O(0), not O(2).

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agortlwifi: Fix kernel panic resulting from RX buffer allocation failure
Larry Finger [Thu, 19 May 2011 15:17:04 +0000]
rtlwifi: Fix kernel panic resulting from RX buffer allocation failure

To handle amsdu_8k capability, the PCI routine of this driver must
allocate receive buffers of order 2. Under heavy load, this causes
fragmentation of memory. The present code releases the current buffer
before checking to see if a new one is availble. Recovery from
allocation failures is not possible, which results in kernel panics.

The fix is to reorder the code to check that a new buffer can be
allocated before the old one is released. If not possible, the
received frame is dropped and the old one is reused. Without this
change, it is impossible to transfer a 2 GB file without a kernel panic.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [2.6.{37,38,39}]
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agonl80211: fix check for valid SSID size in scan operations
Luciano Coelho [Wed, 18 May 2011 21:43:38 +0000]
nl80211: fix check for valid SSID size in scan operations

In both trigger_scan and sched_scan operations, we were checking for
the SSID length before assigning the value correctly.  Since the
memory was just kzalloc'ed, the check was always failing and SSID with
over 32 characters were allowed to go through.

This was causing a buffer overflow when copying the actual SSID to the
proper place.

This bug has been there since 2.6.29-rc4.

Cc: stable@kernel.org
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomwifiex: correct event header length
Yogesh Ashok Powar [Wed, 18 May 2011 19:02:03 +0000]
mwifiex: correct event header length

While decoding received event packet from firmware, 4 bytes
of interface header are already removed unconditionally.
So for handling event only 4 more bytes needs to be pulled.
This is achieved by changing event header length to 4.

Almost all the events, except BA stream related and AMSDU
aggregation control events, do not have the payload in their
event skb. Such events handling depends only on the event ID.
This event ID is the first four bytes of the event skb, which
is copied to a separate variable before pulling the skb header.
Hence event handling worked only for those events that didn't
have payload in event skb.

This patch fixes the broken event path of the events with
payload in their event skb without harming existing working
event path for the events without payload.

Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agobug.h: Move ratelimit warn interfaces to ratelimit.h
David S. Miller [Thu, 26 May 2011 19:00:31 +0000]
bug.h: Move ratelimit warn interfaces to ratelimit.h

As reported by Ingo Molnar, we still have configuration combinations
where use of the WARN_RATELIMIT interfaces break the build because
dependencies don't get met.

Instead of going down the long road of trying to make it so that
ratelimit.h can get included by kernel.h or asm-generic/bug.h,
just move the interface into ratelimit.h and make users have
to include that.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>

8 years agobonding: cleanup module option descriptions
Andy Gospodarek [Wed, 25 May 2011 04:41:59 +0000]
bonding: cleanup module option descriptions

Weiping Pan noticed that the module option description for
xmit_hash_policy was incorrect and was nice enough to post a patch to
fix it.  The text was correct, but created a line over 80 characters and
I would rather not add those.  I realized I could take a few minutes and
clean up all the descriptions and things would look much better.  This
is the result.

Based on patch from Weiping Pan <panweiping3@gmail.com>.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
CC: Weiping Pan <panweiping3@gmail.com>
Reviewed-by: Weiping Pan <panweiping3@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet:8021q:vlan.c Fix pr_info to just give the vlan fullname and version.
Justin Mattock [Mon, 23 May 2011 20:43:48 +0000]
net:8021q:vlan.c Fix pr_info to just give the vlan fullname and version.

The below patch removes vlan_buggyright and vlan_copyright from vlan_proto_init,
so that it prints out just the fullname of vlan and the version number.

before:

[   30.438203] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
[   30.441542] All bugs added by David S. Miller <davem@redhat.com>

after:

[   31.513910] 802.1Q VLAN Support v1.8

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
CC: Joe Perches <joe@perches.com>
CC: David S. Miller <davem@davemloft.net>
CC: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: davinci_emac: fix dev_err use at probe
Johan Hovold [Thu, 26 May 2011 04:37:32 +0000]
net: davinci_emac: fix dev_err use at probe

Use platform device rather than net device in dev_err calls before net
device has been registered to avoid messages such as

(null): DaVinci EMAC: Failed to get EMAC clock

Also replace remaining printks in probe with dev_{err,warn}.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agocan: convert to %pK for kptr_restrict support
Oliver Hartkopp [Thu, 26 May 2011 04:57:53 +0000]
can: convert to %pK for kptr_restrict support

As these pointers have been printed without using %p they were missed in the
big network kptr_restrict conversion patch %p -> %pK from Dan Rosenberg.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: fix ETHTOOL_SFEATURES compatibility with old ethtool_ops.set_flags
Michał Mirosław [Thu, 26 May 2011 00:42:57 +0000]
net: fix ETHTOOL_SFEATURES compatibility with old ethtool_ops.set_flags

Current code squashes flags to bool - this makes set_flags fail whenever
some ETH_FLAG_* equivalent features are set. Fix this.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonetfilter: Fix several warnings in compat_mtw_from_user().
David Miller [Thu, 19 May 2011 22:14:39 +0000]
netfilter: Fix several warnings in compat_mtw_from_user().

Kill set but not used 'entry_offset'.

Add a default case to the switch statement so the compiler
can see that we always initialize off and size_kern before
using them.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

8 years agonetfilter: ipset: fix ip_set_flush return code
Jozsef Kadlecsik [Tue, 24 May 2011 08:20:19 +0000]
netfilter: ipset: fix ip_set_flush return code

ip_set_flush returned -EPROTO instead of -IPSET_ERR_PROTOCOL, fixed

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

8 years agonetfilter: ipset: remove unused variable from type_pf_tdel()
Jozsef Kadlecsik [Tue, 24 May 2011 08:20:18 +0000]
netfilter: ipset: remove unused variable from type_pf_tdel()

Variable 'ret' is set in type_pf_tdel() but not used, remove.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

8 years agonetfilter: ipset: Use proper timeout value to jiffies conversion
Jozsef Kadlecsik [Tue, 24 May 2011 08:20:17 +0000]
netfilter: ipset: Use proper timeout value to jiffies conversion

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

8 years agobonding: documentation and code cleanup for resend_igmp
Flavio Leitner [Wed, 25 May 2011 08:38:58 +0000]
bonding: documentation and code cleanup for resend_igmp

Improves the documentation about how IGMP resend parameter
works, fix two missing checks and coding style issues.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobonding: prevent deadlock on slave store with alb mode (v3)
Neil Horman [Wed, 25 May 2011 08:13:01 +0000]
bonding: prevent deadlock on slave store with alb mode (v3)

This soft lockup was recently reported:

[root@dell-per715-01 ~]# echo +bond5 > /sys/class/net/bonding_masters
[root@dell-per715-01 ~]# echo +eth1 > /sys/class/net/bond5/bonding/slaves
bonding: bond5: doing slave updates when interface is down.
bonding bond5: master_dev is not up in bond_enslave
[root@dell-per715-01 ~]# echo -eth1 > /sys/class/net/bond5/bonding/slaves
bonding: bond5: doing slave updates when interface is down.

BUG: soft lockup - CPU#12 stuck for 60s! [bash:6444]
CPU 12:
Modules linked in: bonding autofs4 hidp rfcomm l2cap bluetooth lockd sunrpc
be2d
Pid: 6444, comm: bash Not tainted 2.6.18-262.el5 #1
RIP: 0010:[<ffffffff80064bf0>]  [<ffffffff80064bf0>]
.text.lock.spinlock+0x26/00
RSP: 0018:ffff810113167da8  EFLAGS: 00000286
RAX: ffff810113167fd8 RBX: ffff810123a47800 RCX: 0000000000ff1025
RDX: 0000000000000000 RSI: ffff810123a47800 RDI: ffff81021b57f6f8
RBP: ffff81021b57f500 R08: 0000000000000000 R09: 000000000000000c
R10: 00000000ffffffff R11: ffff81011d41c000 R12: ffff81021b57f000
R13: 0000000000000000 R14: 0000000000000282 R15: 0000000000000282
FS:  00002b3b41ef3f50(0000) GS:ffff810123b27940(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00002b3b456dd000 CR3: 000000031fc60000 CR4: 00000000000006e0

Call Trace:
 [<ffffffff80064af9>] _spin_lock_bh+0x9/0x14
 [<ffffffff886937d7>] :bonding:tlb_clear_slave+0x22/0xa1
 [<ffffffff8869423c>] :bonding:bond_alb_deinit_slave+0xba/0xf0
 [<ffffffff8868dda6>] :bonding:bond_release+0x1b4/0x450
 [<ffffffff8006457b>] __down_write_nested+0x12/0x92
 [<ffffffff88696ae4>] :bonding:bonding_store_slaves+0x25c/0x2f7
 [<ffffffff801106f7>] sysfs_write_file+0xb9/0xe8
 [<ffffffff80016b87>] vfs_write+0xce/0x174
 [<ffffffff80017450>] sys_write+0x45/0x6e
 [<ffffffff8005d28d>] tracesys+0xd5/0xe0

It occurs because we are able to change the slave configuarion of a bond while
the bond interface is down.  The bonding driver initializes some data structures
only after its ndo_open routine is called.  Among them is the initalization of
the alb tx and rx hash locks.  So if we add or remove a slave without first
opening the bond master device, we run the risk of trying to lock/unlock a
spinlock that has garbage for data in it, which results in our above softlock.

Note that sometimes this works, because in many cases an unlocked spinlock has
the raw_lock parameter initialized to zero (meaning that the kzalloc of the
net_device private data is equivalent to calling spin_lock_init), but thats not
true in all cases, and we aren't guaranteed that condition, so we need to pass
the relevant spinlocks through the spin_lock_init function.

Fix it by moving the spin_lock_init calls for the tx and rx hashtable locks to
the ndo_init path, so they are ready for use by the bond_store_slaves path.

Change notes:
v2) Based on conversation with Jay and Nicolas it seems that the ability to
enslave devices while the bond master is down should be safe to do.  As such
this is an outlier bug, and so instead we'll just initalize the errant spinlocks
in the init path rather than the open path, solving the problem.  We'll also
remove the warnings about the bond being down during enslave operations, since
it should be safe

v3) Fix spelling error

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: jtluka@redhat.com
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: nicolas.2p.debian@gmail.com
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: hold rtnl again in dump callbacks
Eric Dumazet [Wed, 25 May 2011 07:34:04 +0000]
net: hold rtnl again in dump callbacks

Commit e67f88dd12f6 (dont hold rtnl mutex during netlink dump callbacks)
missed fact that rtnl_fill_ifinfo() must be called with rtnl held.

Because of possible deadlocks between two mutexes (cb_mutex and rtnl),
its not easy to solve this problem, so revert this part of the patch.

It also forgot one rcu_read_unlock() in FIB dump_rules()

Add one ASSERT_RTNL() in rtnl_fill_ifinfo() to remind us the rule.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoAdd Fujitsu 1000base-SX PCI ID to tg3
Meelis Roos [Wed, 25 May 2011 05:43:47 +0000]
Add Fujitsu 1000base-SX PCI ID to tg3

This patch adds the PCI ID of Fujitsu 1000base-SX NIC to tg3 driver.
Tested to detect the card, MAC and serdes, not tested with link at the
moment since I have no fiber switch here. I did not add new constants to
the pci_ids.h header file since these constants are used only here.

Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobnx2x: protect sequence increment with mutex
Dmitry Kravkov [Wed, 25 May 2011 04:55:51 +0000]
bnx2x: protect sequence increment with mutex

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosch_sfq: fix peek() implementation
Eric Dumazet [Wed, 25 May 2011 04:40:11 +0000]
sch_sfq: fix peek() implementation

Since commit eeaeb068f139 (sch_sfq: allow big packets and be fair),
sfq_peek() can return a different skb that would be normally dequeued by
sfq_dequeue() [ if current slot->allot is negative ]

Use generic qdisc_peek_dequeued() instead of custom implementation, to
get consistent result.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jarek Poplawski <jarkao2@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
CC: Jesper Dangaard Brouer <hawk@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoisdn: netjet - blacklist Digium TDM400P
Prarit Bhargava [Wed, 25 May 2011 02:12:23 +0000]
isdn: netjet - blacklist Digium TDM400P

[2nd try ... 1st attempt didn't make it to netdev mailing list]

A quick google search reveals that people with this card are blacklisting it
in the initramfs and in the module blacklist based on a statement that it
is unsupported. Since the older Digium is also unsupported I'm pretty
confident that this newer card is also not supported.

lspci -xxx -vv shows

04:07.0 Communication controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN interface
        Subsystem: Device b100:0003
P.

----8<----
The Asterisk Voice Card, DIGIUM TDM400P is unsupported by the netjet driver.
Blacklist it like the Digium X100P/X101P card.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agovia-velocity: don't annotate MAC registers as packed
Ulrich Hecht [Wed, 25 May 2011 01:07:22 +0000]
via-velocity: don't annotate MAC registers as packed

On ARM, memory accesses through packed pointers behave in unexpected
ways in GCC releases 4.3 and higher; see https://lkml.org/lkml/2011/2/2/163
for discussion.

In this particular case, 32-bit I/O registers are accessed bytewise,
causing incorrect setting of the DMA address registers which in turn
leads to an error interrupt storm that brings the system to a halt.

Since the mac_regs structure does not need any packing anyway, this patch
simply removes the attribute to fix the issue.

Signed-off-by: Ulrich Hecht <uli@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoxen: netfront: hold RTNL when updating features.
Ian Campbell [Tue, 24 May 2011 21:56:02 +0000]
xen: netfront: hold RTNL when updating features.

Konrad reports:
[    0.930811] RTNL: assertion failed at /home/konrad/ssd/linux/net/core/dev.c (5258)
[    0.930821] Pid: 22, comm: xenwatch Not tainted 2.6.39-05193-gd762f43 #1
[    0.930825] Call Trace:
[    0.930834]  [<ffffffff8143bd0e>] __netdev_update_features+0xae/0xe0
[    0.930840]  [<ffffffff8143dd41>] netdev_update_features+0x11/0x30
[    0.930847]  [<ffffffffa0037105>] netback_changed+0x4e5/0x800 [xen_netfront]
[    0.930854]  [<ffffffff8132a838>] xenbus_otherend_changed+0xa8/0xb0
[    0.930860]  [<ffffffff8157ca99>] ? _raw_spin_unlock_irqrestore+0x19/0x20
[    0.930866]  [<ffffffff8132adfe>] backend_changed+0xe/0x10
[    0.930871]  [<ffffffff8132875a>] xenwatch_thread+0xba/0x180
[    0.930876]  [<ffffffff810a8ba0>] ? wake_up_bit+0x40/0x40
[    0.930881]  [<ffffffff813286a0>] ? split+0xf0/0xf0
[    0.930886]  [<ffffffff810a8646>] kthread+0x96/0xa0
[    0.930891]  [<ffffffff815855a4>] kernel_thread_helper+0x4/0x10
[    0.930896]  [<ffffffff815846b3>] ? int_ret_from_sys_call+0x7/0x1b
[    0.930901]  [<ffffffff8157cf61>] ? retint_restore_args+0x5/0x6
[    0.930906]  [<ffffffff815855a0>] ? gs_change+0x13/0x13

This update happens in xenbus watch callback context and hence does not already
hold the rtnl. Take the lock as necessary.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosctp: fix memory leak of the ASCONF queue when free asoc
Wei Yongjun [Tue, 24 May 2011 21:48:02 +0000]
sctp: fix memory leak of the ASCONF queue when free asoc

If an ASCONF chunk is outstanding, then the following ASCONF
chunk will be queued for later transmission. But when we free
the asoc, we forget to free the ASCONF queue at the same time,
this will cause memory leak.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: make dev_disable_lro use physical device if passed a vlan dev (v2)
Neil Horman [Tue, 24 May 2011 08:31:09 +0000]
net: make dev_disable_lro use physical device if passed a vlan dev (v2)

If the device passed into dev_disable_lro is a vlan, then repoint the dev
poniter so that we actually modify the underlying physical device.

Signed-of-by: Neil Horman <nhorman@tuxdriver.com>
CC: davem@davemloft.net
CC: bhutchings@solarflare.com

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: move is_vlan_dev into public header file (v2)
Neil Horman [Tue, 24 May 2011 08:31:08 +0000]
net: move is_vlan_dev into public header file (v2)

Migrate is_vlan_dev() to if_vlan.h so that core networkig can use it

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: davem@davemloft.net
CC: bhutchings@solarflare.com
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'for-davem' of ssh://master.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Wed, 25 May 2011 17:28:55 +0000]
Merge branch 'for-davem' of ssh:///linux/kernel/git/linville/wireless-next-2.6

8 years agoMerge ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6...
John W. Linville [Tue, 24 May 2011 20:47:54 +0000]
Merge ssh:///linux/kernel/git/linville/wireless-next-2.6 into for-davem

8 years agobug.h: Fix build with CONFIG_PRINTK disabled.
David S. Miller [Tue, 24 May 2011 20:15:41 +0000]
bug.h: Fix build with CONFIG_PRINTK disabled.

Based upon an email by Joe Perches.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>

8 years agowireless: fix fatal kernel-doc error + warning in mac80211.h
Randy Dunlap [Mon, 23 May 2011 00:22:45 +0000]
wireless: fix fatal kernel-doc error + warning in mac80211.h

Fix new kernel-doc Error and Warning in <net/mac80211.h>:

Error(linux-2.6.39-git5/include/net/mac80211.h:550): cannot understand prototype: 'struct ieee80211_sched_scan_ies '
Warning(linux-2.6.39-git5/include/net/mac80211.h:2289): No description found for parameter 'sta'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agowireless: fix cfg80211.h new kernel-doc warnings
Randy Dunlap [Mon, 23 May 2011 00:16:20 +0000]
wireless: fix cfg80211.h new kernel-doc warnings

Fix new kernel-doc warnings in <net/cfg80211.h>:

Warning(linux-2.6.39-git5/include/net/cfg80211.h:560): No description found for parameter 'bss_param'
Warning(linux-2.6.39-git5/include/net/cfg80211.h:1555): Enum value 'WIPHY_FLAG_SUPPORTS_SCHED_SCAN' not described in enum 'wiphy_flags'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoiwlagn: dbg_fixed_rate only used when CONFIG_MAC80211_DEBUGFS enabled
Wey-Yi Guy [Fri, 20 May 2011 18:56:18 +0000]
iwlagn: dbg_fixed_rate only used when CONFIG_MAC80211_DEBUGFS enabled

Fix compiling error when CONFIG_MAC80211_DEBUGFS is not enabled
drivers/net/wireless/iwlwifi/iwl-agn-rs.c:351: error: 'struct iwl_lq_sta' has no member named 'dbg_fixed_rate'
drivers/net/wireless/iwlwifi/iwl-agn-rs.c:1076: error: 'struct iwl_lq_sta' has no member named 'dbg_fixed_rate'

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agodst: catch uninitialized metrics
Stephen Hemminger [Tue, 24 May 2011 17:50:52 +0000]
dst: catch uninitialized metrics

Catch cases where dst_metric_set() and other functions are called
but _metrics is NULL.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobe2net: hash key for rss-config cmd not set
Sathya Perla [Mon, 23 May 2011 20:29:09 +0000]
be2net: hash key for rss-config cmd not set

A non-zero, non-descript value is needed as the hash key. The hash variable was left un-initialized; but sometimes it gets a zero value
and hashing is not effective. The constant value used now (not of any significance) seems to work fine.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobridge: initialize fake_rtable metrics
Eric Dumazet [Tue, 24 May 2011 17:32:18 +0000]
bridge: initialize fake_rtable metrics

bridge netfilter code uses a fake_rtable, and we must init its _metric
field or risk NULL dereference later.

Ref: https://bugzilla.kernel.org/show_bug.cgi?id=35672

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: fix __dst_destroy_metrics_generic()
Eric Dumazet [Tue, 24 May 2011 17:29:50 +0000]
net: fix __dst_destroy_metrics_generic()

dst_default_metrics is readonly, we dont want to kfree() it later.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoCDC NCM: release interfaces fix in unbind()
Alexey Orishko [Tue, 24 May 2011 05:26:13 +0000]
CDC NCM: release interfaces fix in unbind()

Changes:
- claim slave/data interface during bind() and release
 interfaces in unbind() unconditionally
- in case of error during bind(), release claimed data
 interface in the same function
- remove obsolited "*_claimed" entries from driver context

Signed-off-by: Alexey Orishko <alexey.orishko@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobnx2x: fix inverted condition
Dmitry Kravkov [Tue, 24 May 2011 02:06:06 +0000]
bnx2x: fix inverted condition

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoigmp: call ip_mc_clear_src() only when we have no users of ip_mc_list
Veaceslav Falico [Mon, 23 May 2011 23:15:05 +0000]
igmp: call ip_mc_clear_src() only when we have no users of ip_mc_list

In igmp_group_dropped() we call ip_mc_clear_src(), which resets the number
of source filters per mulitcast. However, igmp_group_dropped() is also
called on NETDEV_DOWN, NETDEV_PRE_TYPE_CHANGE and NETDEV_UNREGISTER, which
means that the group might get added back on NETDEV_UP, NETDEV_REGISTER and
NETDEV_POST_TYPE_CHANGE respectively, leaving us with broken source
filters.

To fix that, we must clear the source filters only when there are no users
in the ip_mc_list, i.e. in ip_mc_dec_group() and on device destroy.

Acked-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: use synchronize_rcu_expedited()
Eric Dumazet [Mon, 23 May 2011 23:07:32 +0000]
net: use synchronize_rcu_expedited()

synchronize_rcu() is very slow in various situations (HZ=100,
CONFIG_NO_HZ=y, CONFIG_PREEMPT=n)

Extract from my (mostly idle) 8 core machine :

 synchronize_rcu() in 99985 us
 synchronize_rcu() in 79982 us
 synchronize_rcu() in 87612 us
 synchronize_rcu() in 79827 us
 synchronize_rcu() in 109860 us
 synchronize_rcu() in 98039 us
 synchronize_rcu() in 89841 us
 synchronize_rcu() in 79842 us
 synchronize_rcu() in 80151 us
 synchronize_rcu() in 119833 us
 synchronize_rcu() in 99858 us
 synchronize_rcu() in 73999 us
 synchronize_rcu() in 79855 us
 synchronize_rcu() in 79853 us

When we hold RTNL mutex, we would like to spend some cpu cycles but not
block too long other processes waiting for this mutex.

We also want to setup/dismantle network features as fast as possible at
boot/shutdown time.

This patch makes synchronize_net() call the expedited version if RTNL is
locked.

synchronize_rcu_expedited() typical delay is about 20 us on my machine.

 synchronize_rcu_expedited() in 18 us
 synchronize_rcu_expedited() in 18 us
 synchronize_rcu_expedited() in 18 us
 synchronize_rcu_expedited() in 18 us
 synchronize_rcu_expedited() in 20 us
 synchronize_rcu_expedited() in 16 us
 synchronize_rcu_expedited() in 20 us
 synchronize_rcu_expedited() in 18 us
 synchronize_rcu_expedited() in 18 us

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
CC: Ben Greear <greearb@candelatech.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: convert %p usage to %pK
Dan Rosenberg [Mon, 23 May 2011 12:17:35 +0000]
net: convert %p usage to %pK

The %pK format specifier is designed to hide exposed kernel pointers,
specifically via /proc interfaces.  Exposing these pointers provides an
easy target for kernel write vulnerabilities, since they reveal the
locations of writable structures containing easily triggerable function
pointers.  The behavior of %pK depends on the kptr_restrict sysctl.

If kptr_restrict is set to 0, no deviation from the standard %p behavior
occurs.  If kptr_restrict is set to 1, the default, if the current user
(intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG
(currently in the LSM tree), kernel pointers using %pK are printed as 0's.
 If kptr_restrict is set to 2, kernel pointers using %pK are printed as
0's regardless of privileges.  Replacing with 0's was chosen over the
default "(null)", which cannot be parsed by userland %p, which expects
"(nil)".

The supporting code for kptr_restrict and %pK are currently in the -mm
tree.  This patch converts users of %p in net/ to %pK.  Cases of printing
pointers to the syslog are not covered, since this would eliminate useful
information for postmortem debugging and the reading of the syslog is
already optionally protected by the dmesg_restrict sysctl.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Graf <tgraf@infradead.org>
Cc: Eugene Teo <eugeneteo@kernel.org>
Cc: Kees Cook <kees.cook@canonical.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Eric Paris <eparis@parisplace.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet/irda: convert bfin_sir to common Blackfin UART header
Mike Frysinger [Mon, 23 May 2011 12:17:09 +0000]
net/irda: convert bfin_sir to common Blackfin UART header

No need to duplicate these defines now that the common Blackfin code has
unified these for all UART devices.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoipv6: Fix return of xfrm6_tunnel_rcv()
David S. Miller [Tue, 24 May 2011 05:11:51 +0000]
ipv6: Fix return of xfrm6_tunnel_rcv()

Like ipv4, just return xfrm6_rcv_spi()'s return value directly.

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: filter: Use WARN_RATELIMIT
Joe Perches [Sat, 21 May 2011 07:48:40 +0000]
net: filter: Use WARN_RATELIMIT

A mis-configured filter can spam the logs with lots of stack traces.

Rate-limit the warnings and add printout of the bogus filter information.

Original-patch-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobug.h: Add WARN_RATELIMIT
Joe Perches [Sat, 21 May 2011 07:48:39 +0000]
bug.h: Add WARN_RATELIMIT

Add a generic mechanism to ratelimit WARN(foo, fmt, ...) messages
using a hidden per call site static struct ratelimit_state.

Also add an __WARN_RATELIMIT variant to be able to use a specific
struct ratelimit_state.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosch_sfq: avoid giving spurious NET_XMIT_CN signals
Eric Dumazet [Mon, 23 May 2011 11:02:42 +0000]
sch_sfq: avoid giving spurious NET_XMIT_CN signals

While chasing a possible net_sched bug, I found that IP fragments have
litle chance to pass a congestioned SFQ qdisc :

- Say SFQ qdisc is full because one flow is non responsive.
- ip_fragment() wants to send two fragments belonging to an idle flow.
- sfq_enqueue() queues first packet, but see queue limit reached :
- sfq_enqueue() drops one packet from 'big consumer', and returns
NET_XMIT_CN.
- ip_fragment() cancel remaining fragments.

This patch restores fairness, making sure we return NET_XMIT_CN only if
we dropped a packet from the same flow.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
CC: Jarek Poplawski <jarkao2@gmail.com>
CC: Jamal Hadi Salim <hadi@cyberus.ca>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoehea: Fix multicast registration on semi-promiscuous mode
Breno Leitao [Mon, 23 May 2011 03:36:35 +0000]
ehea: Fix multicast registration on semi-promiscuous mode

Ehea will not register multicast groups in phyp if the physical
interface is in promiscuous mode. But it should register if the
logical port is in promiscuous mode, but the physical port is not.

Ehea physical promiscuous mode is defined by ehea_port->promisc,
while logical port is defined by IFF_PROMISC.

So currently, if the user set the interface in promiscuous mode,
IGMP will not be registred in PHYP, and PHYP will never pass
the multicast packet to the logical port, which is bad

So, this patch just fixes it, assuring that we register in phyp
if the physical port is not on promiscuous mode.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosnap: remove one synchronize_net()
Eric Dumazet [Sun, 22 May 2011 22:41:48 +0000]
snap: remove one synchronize_net()

No need to wait for a rcu grace period after list insertion.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet: ping: cleanups ping_v4_unhash()
Eric Dumazet [Sun, 22 May 2011 22:23:00 +0000]
net: ping: cleanups ping_v4_unhash()

net/ipv4/ping.c: In function ‘ping_v4_unhash’:
net/ipv4/ping.c:140:28: warning: variable ‘hslot’ set but not used

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Mon, 23 May 2011 17:10:44 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/penberg/slab-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  slub: Deal with hyperthetical case of PAGE_SIZE > 2M
  slub: Remove node check in slab_free
  slub: avoid label inside conditional
  slub: Make CONFIG_DEBUG_PAGE_ALLOC work with new fastpath
  slub: Avoid warning for !CONFIG_SLUB_DEBUG
  slub: Remove CONFIG_CMPXCHG_LOCAL ifdeffery
  slub: Move debug handlign in __slab_free
  slub: Move node determination out of hotpath
  slub: Eliminate repeated use of c->page through a new page variable
  slub: get_map() function to establish map of free objects in a slab
  slub: Use NUMA_NO_NODE in get_partial
  slub: Fix a typo in config name