GitHub/moto-9609/android_kernel_motorola_exynos9610.git
14 years agoHostap: Fix "'ret' set but not used" warning message from GCC in hostap
Julian Calaby [Tue, 17 Aug 2010 18:52:41 +0000 (14:52 -0400)]
Hostap: Fix "'ret' set but not used" warning message from GCC in hostap

 CC [M]  drivers/net/wireless/hostap/hostap_ioctl.o
drivers/net/wireless/hostap/hostap_ioctl.c: In function 'prism2_request_scan':
drivers/net/wireless/hostap/hostap_ioctl.c:1666:6: warning: variable 'ret' set but not used

Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: fix thermal throttling related power management operation
Wey-Yi Guy [Fri, 6 Aug 2010 19:39:14 +0000 (12:39 -0700)]
iwlwifi: fix thermal throttling related power management operation

The current approach is very broken because it adds an
often-used code path that will not initialise "cmd" at all.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Shanyu Zhao <shanyu.zhao.intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211-hwsim: allow configuring IBSS
Johannes Berg [Tue, 17 Aug 2010 10:08:07 +0000 (12:08 +0200)]
mac80211-hwsim: allow configuring IBSS

It will not look standard-compliant in a sniffer
because because it doesn't
 * sync TSF
 * adjust the TSF in beacons
 * send beacons at TBTT
 * cancel beacons when another phy sends

However, it does allow testing the configuration
and parts of the mac80211 code for IBSS and as
such is still useful.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowireless: move documentation books
Johannes Berg [Tue, 17 Aug 2010 10:04:34 +0000 (12:04 +0200)]
wireless: move documentation books

This moves mac80211 documentation into a new
802.11 bookset and also adds a cfg80211 book
to the set. All of this is rather incomplete,
but it's easier to work with big code moving
as a separate patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agop54: improve eeprom parser
Christian Lamparter [Mon, 16 Aug 2010 23:16:58 +0000 (01:16 +0200)]
p54: improve eeprom parser

Like other vendors, p54* devices have a checksum for
the EEPROM descriptor data. This patch enhances the
parser code to generate and verify the data fields,
before initializing the radio-chip on the card.

Note:
If you have to bootstrap an alternative EEPROM image
for your device and you don't know how to generate a
valid crc ccitt checksum, you should take a look at:
http://git.kernel.org/?p=linux/kernel/git/chr/p54tools.git

The "checksum" utility loads a binary p54 EEPROM blob
(use the -f switch, to skip the check) and applies
the correct crc automatically.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agop54spi: fix eeprom checksum
Christian Lamparter [Mon, 16 Aug 2010 23:16:05 +0000 (01:16 +0200)]
p54spi: fix eeprom checksum

This patch corrects the bogus descriptor checksum of our
Nokia N8XX EEPROM blob.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43: N-PHY: Implement RX core state setting for rev.2 and earlier PHYs
Gábor Stefanik [Mon, 16 Aug 2010 20:39:17 +0000 (22:39 +0200)]
b43: N-PHY: Implement RX core state setting for rev.2 and earlier PHYs

Rev.3+ support coming in a later patch.

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43: N-PHY: Implement MAC PHY clock set
Gábor Stefanik [Mon, 16 Aug 2010 20:39:16 +0000 (22:39 +0200)]
b43: N-PHY: Implement MAC PHY clock set

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43: N-PHY: Fix typo in function name (gain_crtl -> gain_ctrl)
Gábor Stefanik [Mon, 16 Aug 2010 20:39:15 +0000 (22:39 +0200)]
b43: N-PHY: Fix typo in function name (gain_crtl -> gain_ctrl)

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43: N-PHY: Implement Host Flags write during device init
Gábor Stefanik [Mon, 16 Aug 2010 20:39:14 +0000 (22:39 +0200)]
b43: N-PHY: Implement Host Flags write during device init

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: separate thermal throttling function
Wey-Yi Guy [Sat, 31 Jul 2010 15:34:07 +0000 (08:34 -0700)]
iwlwifi: separate thermal throttling function

"Thermal Throttling" is an advance feature which only available for
newer _agn devices. Move from iwl-core to iwl-agn for better code
organization.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/wl12xx: Use available error codes
Julia Lawall [Mon, 16 Aug 2010 16:27:30 +0000 (18:27 +0200)]
drivers/net/wireless/wl12xx: Use available error codes

Error codes are stored in ret, but the return value is always 0.  Return
ret instead.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression x;
constant C;
@@

if (...) { ...
  x = -C
  ... when != x
(
  return <+...x...+>;
|
  return NULL;
|
  return;
|
* return ...;
)
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/wl12xx: Use available error codes
Julia Lawall [Mon, 16 Aug 2010 16:25:21 +0000 (18:25 +0200)]
drivers/net/wireless/wl12xx: Use available error codes

In each case, error codes are stored in ret, but the return value is always
0.  Return ret instead.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression x;
constant C;
@@

if (...) { ...
  x = -C
  ... when != x
(
  return <+...x...+>;
|
  return NULL;
|
  return;
|
* return ...;
)
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: don't enable probe request rx for STAs
Bob Copeland [Sun, 15 Aug 2010 17:03:15 +0000 (13:03 -0400)]
ath5k: don't enable probe request rx for STAs

AR5K_RX_FILTER_PROBEREQ enables reception of probe requests,
but the filter flag FIF_BCN_PRBRESP_PROMISC is actually about
receiving beacons and probe _responses_, so we shouldn't
turn on the filter when scanning.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: remove all mention of monitor iftype
Bob Copeland [Sun, 15 Aug 2010 17:03:14 +0000 (13:03 -0400)]
ath5k: remove all mention of monitor iftype

Monitor interfaces are never seen by the driver so these
cases are never reached.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: remove monitor check in receive_frame_ok filter
Bob Copeland [Sun, 15 Aug 2010 17:03:13 +0000 (13:03 -0400)]
ath5k: remove monitor check in receive_frame_ok filter

Monitor interfaces are never seen by the driver, so tests based on
that opmode don't make sense.  Also, we already pass all mic
failure packets.

Consequently this code is actually accepting any frames with just
crypto errors and rejecting those with CRC, FIFO, and PHY errors for
all interface types.  Adjust the code and comment accordingly.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: clean up some comments
Bob Copeland [Sun, 15 Aug 2010 17:03:12 +0000 (13:03 -0400)]
ath5k: clean up some comments

This fixes a few misspellings, word repetitions, and some grammar
nits in ath5k comments.  No code changes.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: remove own (wrong) IEEE80211_MAX_LEN
Nick Kossifidis [Sun, 15 Aug 2010 17:03:11 +0000 (13:03 -0400)]
ath5k: remove own (wrong) IEEE80211_MAX_LEN

Use the version already supplied in include/linux/ieee80211.h.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: rename ath5k_hw_set_associd to _set_bssid
Nick Kossifidis [Sun, 15 Aug 2010 17:03:10 +0000 (13:03 -0400)]
ath5k: rename ath5k_hw_set_associd to _set_bssid

Although the named function also sets the aid, its main
purpose is configuring the bssid and we use that
everywhere else.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211/mac80211: extensible frame processing
Johannes Berg [Thu, 12 Aug 2010 13:38:38 +0000 (15:38 +0200)]
cfg80211/mac80211: extensible frame processing

Allow userspace to register for more than just
action frames by giving the frame subtype, and
make it possible to use this in various modes
as well.

With some tweaks and some added functionality
this will, in the future, also be usable in AP
mode and be able to replace the cooked monitor
interface currently used in that case.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: remove unused don't-encrypt flag
Johannes Berg [Thu, 12 Aug 2010 13:37:29 +0000 (15:37 +0200)]
mac80211: remove unused don't-encrypt flag

When MFP is disabled, action frames will not
be encrypted since they are management frames
and the only management frames that can then
be encrypted are authentication frames.

Therefore, setting the don't-encrypt flag on
action frames is unnecessary.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211: mark ieee80211_hdrlen const
Johannes Berg [Thu, 12 Aug 2010 12:49:58 +0000 (14:49 +0200)]
cfg80211: mark ieee80211_hdrlen const

This function analyses only its single, value-passed
argument, and has no side effects. Thus it can be
const, which makes mac80211 smaller, for example:

   text    data     bss     dec     hex filename
 362518   16720     884  380122   5ccda mac80211.ko (before)
 362358   16720     884  379962   5cc3a mac80211.ko (after)

a 160 byte saving in text size, and an optimisation
because the function won't be called as often.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/libertas/cfg.c: needs sched.h
Andrew Morton [Wed, 11 Aug 2010 01:01:06 +0000 (18:01 -0700)]
drivers/net/wireless/libertas/cfg.c: needs sched.h

i386 allmodconfig:

drivers/net/wireless/libertas/cfg.c: In function 'lbs_scan_worker':
drivers/net/wireless/libertas/cfg.c:722: error: 'TASK_NORMAL' undeclared (first use in this function)
drivers/net/wireless/libertas/cfg.c:722: error: (Each undeclared identifier is reported only once
drivers/net/wireless/libertas/cfg.c:722: error: for each function it appears in.)
drivers/net/wireless/libertas/cfg.c: In function 'lbs_cfg_connect':
drivers/net/wireless/libertas/cfg.c:1267: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function 'signal_pending'
drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function 'schedule_timeout'

So wait.h has a dependency on sched.h, but doesn't include sched.h.  This
patch doesn't fix that.

Cc: Dan Williams <dcbw@redhat.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211: check if WEP is available for shared key auth
Johannes Berg [Tue, 10 Aug 2010 07:46:42 +0000 (09:46 +0200)]
cfg80211: check if WEP is available for shared key auth

When shared key auth is requested, cfg80211
should verify that the device is capable of
WEP crypto which is required.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: dont advertise WEP if unavailable
Johannes Berg [Tue, 10 Aug 2010 07:46:41 +0000 (09:46 +0200)]
mac80211: dont advertise WEP if unavailable

When WEP is unavailable, don't advertise it
to cfg80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: remove unused status flag checks
Johannes Berg [Tue, 10 Aug 2010 07:46:40 +0000 (09:46 +0200)]
mac80211: remove unused status flag checks

The decryption code verifies whether or not
a given frame was decrypted and verified by
hardware. This is unnecessary, as the crypto
RX handler already does it long before the
decryption code is even invoked, so remove
that code to avoid confusion.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: move key tfm setup
Johannes Berg [Tue, 10 Aug 2010 07:46:39 +0000 (09:46 +0200)]
mac80211: move key tfm setup

There's no need to keep separate if statements
for setting up the CCMP/AES-CMAC tfm structs;
move that into the existing switch statement.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: use cipher suite selectors
Johannes Berg [Tue, 10 Aug 2010 07:46:38 +0000 (09:46 +0200)]
mac80211: use cipher suite selectors

Currently, mac80211 translates the cfg80211
cipher suite selectors into ALG_* values.
That isn't all too useful, and some drivers
benefit from the distinction between WEP40
and WEP104 as well. Therefore, convert it
all to use the cipher suite selectors.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: [spi] use common firmware request helper and new firmware locations
Dan Williams [Sun, 8 Aug 2010 02:16:30 +0000 (21:16 -0500)]
libertas: [spi] use common firmware request helper and new firmware locations

linux-firmware puts libertas firmware in /libertas.  Fix the driver to
look there first, but fall back to the old firmware names if the new
ones don't exist.  Add preference for newer firmware versions too.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: [sdio] use common firmware request helper and new firmware locations
Dan Williams [Sun, 8 Aug 2010 02:15:52 +0000 (21:15 -0500)]
libertas: [sdio] use common firmware request helper and new firmware locations

linux-firmware puts libertas firmware in /libertas.  Fix the driver to
look there first, but fall back to the old firmware names if the new
ones don't exist.  Add preference for newer firmware versions too.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: [cs] use common firmware request helper and new firmware locations
Dan Williams [Sun, 8 Aug 2010 02:15:19 +0000 (21:15 -0500)]
libertas: [cs] use common firmware request helper and new firmware locations

linux-firmware puts libertas firmware in /libertas.  Fix the driver to
look there first, but fall back to the old firmware names if the new
ones don't exist.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: add two-stage firmware request helper
Dan Williams [Sun, 8 Aug 2010 02:14:33 +0000 (21:14 -0500)]
libertas: add two-stage firmware request helper

SDIO, GSPI, and CS all use 2-stage firmware and the loading
process and logic should be the same.  Allow module parameters
to override the automatic firmware choice, otherwise just walk
the bus driver's firmware table and pick out the first firmware
pair that exists for the given model.

Some special care is taken to allow overriding of just the helper
or the main firmware, but let the other of the pair be chosen
automatically.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: [usb] use new firmware locations
Dan Williams [Sun, 8 Aug 2010 02:13:57 +0000 (21:13 -0500)]
libertas: [usb] use new firmware locations

Look for firmware where the linux-firmware tree actually puts it, but
fall back to original firmware name & location when the new location
doesn't exist.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Remove ieee80211_rx_status from rt2x00_dev
Ivo van Doorn [Fri, 6 Aug 2010 18:49:27 +0000 (20:49 +0200)]
rt2x00: Remove ieee80211_rx_status from rt2x00_dev

rt2x00 was keeping a copy of ieee80211_rx_status embedded
into the rt2x00_dev structure. For each RX frame, this structure
was copied into the skb->cb where mac80211 would handle it further.

However at the moment only the fields current band, and frequency
were updated. Whereas the band was already provided directly within
the rt2x00_dev structure. Save a memcpy action, and reduce memory
a bit, by adding a curr_freq field to rt2x00_dev, and completely
remove the ieee80211_rx_status structure from rt2x00_dev.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Update comments regarding TXWI and TX_STA_FIFO
Helmut Schaa [Fri, 6 Aug 2010 18:48:27 +0000 (20:48 +0200)]
rt2x00: Update comments regarding TXWI and TX_STA_FIFO

Add some comments about the TXWI fields and the TX_STA_FIFO register.
Especially describe the relationship between the TXWI field PACKETID
and the PID field in the TX_STA_FIFO register.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Implement TX status reporting for rt2800usb
Ivo van Doorn [Fri, 6 Aug 2010 18:47:57 +0000 (20:47 +0200)]
rt2x00: Implement TX status reporting for rt2800usb

The TX_STA_FIFO register which is used for per-frame TX frame
status reporting is also valid on rt2800usb. We can move the
rt2800pci_txdone function into rt2800lib where it can also
be used by rt2800usb.

rt2800usb needs to overwrite the txdone work handler to
a different function.

Both rt2800usb as rt2800_txdone need to take into account
that IO failures can occur while uploading the URB, which
means that when obtaining the new entry the IO status must
be checked.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Request TXWI pointer from driver
Ivo van Doorn [Fri, 6 Aug 2010 18:47:20 +0000 (20:47 +0200)]
rt2x00: Request TXWI pointer from driver

The only reason why the write_tx_data callback function
is needed inside the driver, is because the location of
the TXWI descriptor is different on PCI and USB hardware.
Except for the beacon, where the TXWI is always at the
start of the SKB buffer.

In both cases the drivers write_tx_data function only
wrap around the function rt2800_write_txwi. Move write_tx_data
completely into the rt2800lib library, and add a callback
function to obtain the TXWI pointer.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Add helper function for reporting tx status
Ivo van Doorn [Fri, 6 Aug 2010 18:46:53 +0000 (20:46 +0200)]
rt2x00: Add helper function for reporting tx status

At some points, some drivers can't report the full TX status
information. This can happen for the UNKNOWN state, or the
FAILURE state (in case the URB failed).
Add a wrapper function to simplify reporting the
empty TX information.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Set MIMO PS flag in tx descriptor for STAs in dynamic SMPS mode
Ivo van Doorn [Fri, 6 Aug 2010 18:46:19 +0000 (20:46 +0200)]
rt2x00: Set MIMO PS flag in tx descriptor for STAs in dynamic SMPS mode

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: Move USB tx/rx done handling to workqueue
Ivo van Doorn [Fri, 6 Aug 2010 18:45:38 +0000 (20:45 +0200)]
rt2x00: Move USB tx/rx done handling to workqueue

Move all TX and RX completion handling into a work structure,
which is handeled on the mac80211 workqueue. This simplifies
the code in rt2x00lib since it no longer needs to check if the
device is USB or PCI to decide which mac80211 function should be used.

In the watchdog some changes are needed since it can no longer rely
on the TX completion function to be run while looping through the
entries. (Both functions now work on the same workqueue, so this
would deadlock). So the watchdog now waits for the URB to return,
and handle the TX status report directly.

As a side-effect, the debugfs entry for the RX queue now correctly
displays the positions of the INDEX and INDEX_DONE counters. This
also implies that it is not possible to perform checks like queue_empty()
and queue_full() on the RX queue.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k: remove duplicate get_hw_crypto_keytype()
Luis R. Rodriguez [Thu, 5 Aug 2010 21:56:54 +0000 (17:56 -0400)]
ath9k: remove duplicate get_hw_crypto_keytype()

Use ath9k_cmn_get_hw_crypto_keytype() instead which is
already exported and shared, and does exactly the same thing.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/ath/ath9k: Adjust confusing if indentation
Julia Lawall [Thu, 5 Aug 2010 20:26:56 +0000 (22:26 +0200)]
drivers/net/wireless/ath/ath9k: Adjust confusing if indentation

Outdent the code following the if.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable braces4@
position p1,p2;
statement S1,S2;
@@

(
if (...) { ... }
|
if (...) S1@p1 S2@p2
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

if (p1[0].column == p2[0].column):
  cocci.print_main("branch",p1)
  cocci.print_secs("after",p2)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/prism54: Adjust confusing if indentation
Julia Lawall [Thu, 5 Aug 2010 20:26:04 +0000 (22:26 +0200)]
drivers/net/wireless/prism54: Adjust confusing if indentation

Indent the branch of an if.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable braces4@
position p1,p2;
statement S1,S2;
@@

(
if (...) { ... }
|
if (...) S1@p1 S2@p2
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

if (p1[0].column == p2[0].column):
  cocci.print_main("branch",p1)
  cocci.print_secs("after",p2)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agodrivers/net/wireless/libertas: Adjust confusing if indentation
Julia Lawall [Thu, 5 Aug 2010 20:23:54 +0000 (22:23 +0200)]
drivers/net/wireless/libertas: Adjust confusing if indentation

At the point of the patched code, err has already been tested, so it is
only worthwhile to test it again in the if branches where it is changed.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable braces4@
position p1,p2;
statement S1,S2;
@@

(
if (...) { ... }
|
if (...) S1@p1 S2@p2
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

if (p1[0].column == p2[0].column):
  cocci.print_main("branch",p1)
  cocci.print_secs("after",p2)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211: support sysfs namespaces
Johannes Berg [Thu, 5 Aug 2010 15:45:15 +0000 (17:45 +0200)]
cfg80211: support sysfs namespaces

Enable using network namespaces with
wireless devices even when sysfs is
enabled using the same infrastructure
that was built for netdevs.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: allow drivers to request SM PS mode change
Johannes Berg [Thu, 5 Aug 2010 15:05:55 +0000 (17:05 +0200)]
mac80211: allow drivers to request SM PS mode change

Sometimes drivers have more information than the
stack about how their antennas/chains are used,
and may require that the SM PS mode be changed.
This could happen, for example, when detecting
that the user disconnected an antenna. Thus this
patch introduces API to allow drivers to request
SM PS mode changes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: per interface idle notification
Johannes Berg [Thu, 5 Aug 2010 15:02:38 +0000 (17:02 +0200)]
mac80211: per interface idle notification

Sometimes we don't just need to know whether or
not the device is idle, but also per interface.
This adds that reporting capability to mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agonet: mac80211: Fix a typo.
Andrea Gelmini [Thu, 5 Aug 2010 13:51:35 +0000 (15:51 +0200)]
net: mac80211: Fix a typo.

"userpace" -> "userspace"

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211: deauth doesn't always imply disconnect
Johannes Berg [Thu, 5 Aug 2010 08:20:27 +0000 (10:20 +0200)]
cfg80211: deauth doesn't always imply disconnect

When an AP sends a deauth frame, or we send one
to an AP, that only means we lost our connection
if we were actually connected to that AP. Check
this to avoid sending spurious "disconnected"
events and breaking "iw ... link" reporting.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: AMPDU rx reorder timeout timer
Christian Lamparter [Wed, 4 Aug 2010 23:36:41 +0000 (01:36 +0200)]
mac80211: AMPDU rx reorder timeout timer

This patch introduces a new timer, which will release
queued-up MPDUs from the reorder buffer, whenever
they've waited for more than HT_RX_REORDER_BUF_TIMEOUT
(which is at around 100 ms).

The advantage of having a dedicated timer, instead of
relying on a constant stream of freshly arriving aMPDUs
to release the old ones, is particularly observable when
even a small fraction of MPDUs are forever lost at
low network speeds.

Previously under these circumstances frames would become
stuck in the reorder buffer and the network stack of both
HT peers throttled back, instead of revving up and
gunning the pipes.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: remove unused rate function parameter
Christian Lamparter [Wed, 4 Aug 2010 23:36:36 +0000 (01:36 +0200)]
mac80211: remove unused rate function parameter

This patch removes a few stale parameters and variables
which survived the last, large rx-path reorganization:
"mac80211: correctly place aMPDU RX reorder code"

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: put rx handlers into separate functions
Christian Lamparter [Wed, 4 Aug 2010 23:36:04 +0000 (01:36 +0200)]
mac80211: put rx handlers into separate functions

This patch takes the reorder logic from the RX path and
moves it into separate routines to make the expired frame
release accessible.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k: shorten the calibration interval during strong interference
Felix Fietkau [Mon, 2 Aug 2010 13:53:15 +0000 (15:53 +0200)]
ath9k: shorten the calibration interval during strong interference

When the noise floor limits are being bypassed because of strong
interference, sensitivity is also reduced.
In order to recover from this as quickly as possible, trigger a
long periodic calibration every second instead of every 30 seconds,
until the NF median is within limits again. This is especially important
if the interference lasts for a while, since it takes multiple clean
NF calibrations to bring the median back to normal.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k: use AP beacon miss as a trigger for fast recalibration
Felix Fietkau [Mon, 2 Aug 2010 13:53:14 +0000 (15:53 +0200)]
ath9k: use AP beacon miss as a trigger for fast recalibration

When beacons get stuck in AP mode, the most likely cause is interference.
Such interference can often go on for a while, and too many consecutive
beacon misses can lead to connected clients getting dropped.

Since connected clients might not be subjected to the same interference
if that happens to be very local, the AP should try to deal with it as
good as it can. One way to do this is to trigger an NF calibration with
automatic baseband update right after the beacon miss. In my tests with
very strong interference, this allowed the AP to continue transmitting
beacons after only 2-3 misses, which allows a normal client to stay
connected.

With some of the newer - really sensitive - chips, the maximum noise
floor limit is very low, which can be problematic during very strong
interference. To avoid an endless loop of stuck beacons -> nfcal ->
periodic calibration -> stuck beacons, the beacon miss event also sets
a flag, which allows the calibration code to bypass the chip specific
maximum NF value. This flag is automatically cleared, as soon as the
first NF median goes back below the limits for all chains.

In my tests, this allowed an ath9k AP to survive very strong interference
(measured NF: -68, or sometimes even higher) without losing connectivity
to its clients. Even under these conditions, I was able to transmit
several mbits/s through the interface.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k_hw: apply the noise floor validation to the median instead of single
Felix Fietkau [Mon, 2 Aug 2010 13:53:13 +0000 (15:53 +0200)]
ath9k_hw: apply the noise floor validation to the median instead of single

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k: add a separate debug level for stuck beacons
Felix Fietkau [Mon, 2 Aug 2010 13:53:12 +0000 (15:53 +0200)]
ath9k: add a separate debug level for stuck beacons

Stuck beacons are a useful indicator for debugging various PHY
issues such as calibration. Putting them on the same debug level
as the other beacon stuff makes it hard to spot them in huge amounts
of spam.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: Don't squash error codes in key setup functions
Ben Hutchings [Sun, 1 Aug 2010 16:37:03 +0000 (17:37 +0100)]
mac80211: Don't squash error codes in key setup functions

ieee80211_add_key() currently returns -ENOMEM in case of any error,
including a missing crypto algorithm.  Change ieee80211_key_alloc()
and ieee80211_aes_{key_setup_encrypt,cmac_key_setup}() to encode
errors with ERR_PTR() rather than returning NULL, and change
ieee80211_add_key() accordingly.

Compile-tested only.

Reported-by: Marcin Owsiany <porridge@debian.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: track IBSS manager status
Johannes Berg [Sat, 31 Jul 2010 15:34:10 +0000 (08:34 -0700)]
iwlwifi: track IBSS manager status

Only the IBSS manager, ie. the station that sent
the IBSS beacon last, should be replying to probe
responses. This requires implementing the mac80211
tx_last_beacon callback, which we can do thanks to
the ucode beacon notification.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: make iwl_set_hw_params static to _agn
Wey-Yi Guy [Sat, 31 Jul 2010 15:34:08 +0000 (08:34 -0700)]
iwlwifi: make iwl_set_hw_params static to _agn

iwl_set_hw_params() only used by _agn, make it static

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlagn: log pci revision id
Wey-Yi Guy [Sat, 31 Jul 2010 15:34:06 +0000 (08:34 -0700)]
iwlagn: log pci revision id

Log the information after reading the PCI_REVISION_ID
from pci config space,

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: make iwl_hw_detect static to _agn
Wey-Yi Guy [Sat, 31 Jul 2010 15:34:05 +0000 (08:34 -0700)]
iwlwifi: make iwl_hw_detect static to _agn

iwl_hw_detect() only used by _agn, make it static

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas_tf: if_usb.c: Some more formatting fixes
Thomas Klute [Sat, 31 Jul 2010 10:01:45 +0000 (12:01 +0200)]
libertas_tf: if_usb.c: Some more formatting fixes

Split some long lines to make checkpatch.pl happy. ;-)

Signed-off-by: Thomas Klute <thomas2.klute@uni-dortmund.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas_tf: if_usb.c: Whitespace cleanup
Thomas Klute [Sat, 31 Jul 2010 10:01:44 +0000 (12:01 +0200)]
libertas_tf: if_usb.c: Whitespace cleanup

Signed-off-by: Thomas Klute <thomas2.klute@uni-dortmund.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: unify scan and work mutexes
Johannes Berg [Fri, 30 Jul 2010 14:46:07 +0000 (16:46 +0200)]
mac80211: unify scan and work mutexes

Having both scan and work mutexes is not just
a bit too fine grained, it also creates issues
when there's code that needs both since they
then need to be acquired in the right order,
which can be hard to do.

Therefore, use just a single mutex for both.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: make scan workqueue functions static
Stanislaw Gruszka [Fri, 30 Jul 2010 14:41:08 +0000 (16:41 +0200)]
iwlwifi: make scan workqueue functions static

We do not need export iwl_bg.*scan.*() functions just for initialize
workqueue in other module. Making that functions static helps with
iwl-scan.c code review a bit.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: don't check rates on PLCP error frames
Johannes Berg [Fri, 30 Jul 2010 11:23:12 +0000 (13:23 +0200)]
mac80211: don't check rates on PLCP error frames

Frames that failed PLCP error checks are most likely
microwave transmissions (well, maybe not ...) and
don't have a proper rate detected, so ignore it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: better association request debugging
Dan Williams [Fri, 30 Jul 2010 06:14:33 +0000 (23:14 -0700)]
libertas: better association request debugging

Bring back the comment about FW v5 status codes from the pre-cfg80211
driver, and let through status codes that aren't remapped by the
firmware.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: better scan response debugging
Dan Williams [Fri, 30 Jul 2010 06:12:53 +0000 (23:12 -0700)]
libertas: better scan response debugging

Make it a bit easier to debug scan results in the future.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k: add fastcc to debug print for channel change
Luis R. Rodriguez [Fri, 30 Jul 2010 02:56:22 +0000 (22:56 -0400)]
ath9k: add fastcc to debug print for channel change

This helps us debug channel changes better.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: fix driver offchannel notification when the channel does not change
Felix Fietkau [Thu, 29 Jul 2010 15:36:43 +0000 (17:36 +0200)]
mac80211: fix driver offchannel notification when the channel does not change

When running in client mode and associating to an AP, the channel
change is usually performed with the offchannel flag still set.
However after the assoc is complete, the following channel change event
is suppressed because the run time channel is already set to the operating channel.
Fix this by sending channel change notifications to the driver even if
only the offchannel flag changes.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: do not shortcut rt2x00lib_config_antenna
John W. Linville [Wed, 26 May 2010 17:33:31 +0000 (13:33 -0400)]
rt2x00: do not shortcut rt2x00lib_config_antenna

This function was exiting early if the existing diversity settings
were unchanged.  Unfortunately, in some cases the antenna configuration
is not initialized at all.

https://bugzilla.kernel.org/show_bug.cgi?id=14751

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Mon, 16 Aug 2010 18:40:44 +0000 (14:40 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

14 years agob43: move hwrng registration driver to wireless core initialization
John W. Linville [Fri, 6 Aug 2010 19:31:45 +0000 (15:31 -0400)]
b43: move hwrng registration driver to wireless core initialization

...and unregistration to core shutdown.  Previously, the driver
remained registered even when the hardware was shutdown.  That
causes the driver to return -ENODEV if the b43 device is IFF_DOWN.
This change causes the driver to disappear in that case, allowing
/dev/hwrng to still function if another hwrng device is available.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwm3200wifi: remove comparison to WIFI_IF_NTFY_MAX in iwm_ntf_wifi_if_wrapper
John W. Linville [Tue, 10 Aug 2010 17:22:24 +0000 (13:22 -0400)]
iwm3200wifi: remove comparison to WIFI_IF_NTFY_MAX in iwm_ntf_wifi_if_wrapper

drivers/net/wireless/iwmc3200wifi/rx.c: In function 'iwm_ntf_wifi_if_wrapper':
drivers/net/wireless/iwmc3200wifi/rx.c:1198: warning: comparison is always true due to limited range of data type

This is, of course, because the value of WIFI_IF_NTFY_MAX is 0xff and
hdr->oid is a u8.  This is obviously an attempt to verify the range on
an input value, but since it has no effect it can simply be removed.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Samuel Ortiz <samuel.ortiz@intel.com>
14 years agoipw2100: avoid warning from pointer cast in call to IPW_DEBUG_TX
John W. Linville [Tue, 10 Aug 2010 17:08:11 +0000 (13:08 -0400)]
ipw2100: avoid warning from pointer cast in call to IPW_DEBUG_TX

drivers/net/wireless/ipw2x00/ipw2100.c: In function 'ipw2100_tx_send_commands':
drivers/net/wireless/ipw2x00/ipw2100.c:3063: warning: cast to pointer from integer of different size

This changes the cast and the conversion to match other usage of the
same value in calls to IPW_DEBUG_TX.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: disable aspm by default
John W. Linville [Thu, 5 Aug 2010 18:39:31 +0000 (14:39 -0400)]
iwlwifi: disable aspm by default

Some iwlwifi devices inexplicably disconnect themselves from the PCI-E
bus causing the predictable failures.  This seems to disappear if ASPM
is disabled.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowireless: upcase alpha2 values in queue_regulatory_request
John W. Linville [Thu, 5 Aug 2010 18:26:24 +0000 (14:26 -0400)]
wireless: upcase alpha2 values in queue_regulatory_request

This provides a little more flexibility for human users, and it allows
us to use isalpha rather than the custom is_alpha_upper.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agortl8187: consolidate MSR writes in rtl8187_bss_info_changed
John W. Linville [Fri, 30 Jul 2010 01:52:59 +0000 (21:52 -0400)]
rtl8187: consolidate MSR writes in rtl8187_bss_info_changed

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agortl8180: use RTL818X_MSR_ADHOC for IBSS connection
John W. Linville [Fri, 30 Jul 2010 01:50:29 +0000 (21:50 -0400)]
rtl8180: use RTL818X_MSR_ADHOC for IBSS connection

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agortl8180: use NAPI for bottom-half processing
John W. Linville [Thu, 29 Jul 2010 20:14:14 +0000 (16:14 -0400)]
rtl8180: use NAPI for bottom-half processing

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: support use of NAPI for bottom-half processing
John W. Linville [Thu, 29 Jul 2010 20:14:13 +0000 (16:14 -0400)]
mac80211: support use of NAPI for bottom-half processing

This patch implement basic infrastructure to support use of NAPI by
mac80211-based hardware drivers.

Because mac80211 devices can support multiple netdevs, a dummy netdev
is used for interfacing with the NAPI code in the core of the network
stack.  That structure is hidden from the hardware drivers, but the
actual napi_struct is exposed in the ieee80211_hw structure so that the
poll routines in drivers can retrieve that structure.  Hardware drivers
can also specify their own weight value for NAPI polling.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agozd1211rw: update fw version info in wiphy struct
John W. Linville [Thu, 29 Jul 2010 17:58:48 +0000 (13:58 -0400)]
zd1211rw: update fw version info in wiphy struct

This makes the information available through ethtool...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agort2x00: update fw version info in wiphy struct
John W. Linville [Thu, 29 Jul 2010 17:50:39 +0000 (13:50 -0400)]
rt2x00: update fw version info in wiphy struct

This makes the information available through ethtool...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
14 years agop54: update fw version info in wiphy struct
John W. Linville [Thu, 29 Jul 2010 17:44:44 +0000 (13:44 -0400)]
p54: update fw version info in wiphy struct

This makes the information available through ethtool...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43legacy: update hw/fw version info in wiphy struct
John W. Linville [Thu, 29 Jul 2010 17:30:15 +0000 (13:30 -0400)]
b43legacy: update hw/fw version info in wiphy struct

This makes the information available through ethtool...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agob43: update hw/fw version info in wiphy struct
John W. Linville [Thu, 29 Jul 2010 17:27:28 +0000 (13:27 -0400)]
b43: update hw/fw version info in wiphy struct

This makes the information available through ethtool...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: disable ASPM L0s for all cards
Maxim Levitsky [Fri, 13 Aug 2010 15:27:28 +0000 (11:27 -0400)]
ath5k: disable ASPM L0s for all cards

Atheros PCIe wireless cards handled by ath5k do require L0s disabled.
For distributions shipping with CONFIG_PCIEASPM (this will be enabled
by default in the future in 2.6.36) this will also mean both L1 and L0s
will be disabled when a pre 1.1 PCIe device is detected. We do know L1
works correctly even for all ath5k pre 1.1 PCIe devices though but cannot
currently undue the effect of a blacklist, for details you can read
pcie_aspm_sanity_check() and see how it adjusts the device link
capability.

It may be possible in the future to implement some PCI API to allow
drivers to override blacklists for pre 1.1 PCIe but for now it is
best to accept that both L0s and L1 will be disabled completely for
distributions shipping with CONFIG_PCIEASPM rather than having this
issue present. Motivation for adding this new API will be to help
with power consumption for some of these devices.

Example of issues you'd see:

  - On the Acer Aspire One (AOA150, Atheros Communications Inc. AR5001
    Wireless Network Adapter [168c:001c] (rev 01)) doesn't work well
    with ASPM enabled, the card will eventually stall on heavy traffic
    with often 'unsupported jumbo' warnings appearing. Disabling
    ASPM L0s in ath5k fixes these problems.

  - On the same card you would see a storm of RXORN interrupts
    even though medium is idle.

Credit for root causing and fixing the bug goes to Jussi Kivilinna.

Cc: David Quan <David.Quan@atheros.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k_htc: load proper firmware for device ID 7015
Rajkumar Manoharan [Fri, 13 Aug 2010 13:06:40 +0000 (18:36 +0530)]
ath9k_htc: load proper firmware for device ID 7015

This patch handles the firmware loading properly
for device ID 7015.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowl1251: fix trigger scan timeout usage
Yuri Kululin [Fri, 13 Aug 2010 09:46:12 +0000 (13:46 +0400)]
wl1251: fix trigger scan timeout usage

Use appropriate command (CMD_TRIGGER_SCAN_TO) instead of scan command
(CMD_SCAN) to configure trigger scan timeout.

This was broken in commit 3a98c30f3e8bb1f32b5bcb74a39647b3670de275.

This fix address the bug reported here:

https://bugzilla.kernel.org/show_bug.cgi?id=16554

Cc: stable@kernel.org
Signed-off-by: Yuri Ershov <ext-yuri.ershov@nokia.com>
Signed-off-by: Yuri Kululin <ext-yuri.kululin@nokia.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k_htc: Fix disconnect issue in HT40 mode.
Vivek Natarajan [Thu, 12 Aug 2010 08:53:28 +0000 (14:23 +0530)]
ath9k_htc: Fix disconnect issue in HT40 mode.

Some APs advertise that they may be HT40 capable in the capabilites
but the current operating channel configuration may be only HT20.
This causes disconnection as ath9k_htc sets WLAN_RC_40_FLAG despite
the AP operating in HT20 mode.
Hence set this flag only if the current channel configuration
is HT40 enabled.

Cc: stable@kernel.org
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath9k_htc: fix panic on packet injection using airbase-ng tool.
Rajkumar Manoharan [Wed, 11 Aug 2010 14:57:43 +0000 (20:27 +0530)]
ath9k_htc: fix panic on packet injection using airbase-ng tool.

This should fix the oops which occurs during the packet injection
on monitor interface.

EIP is at ath9k_htc_tx_start+0x69/0x220 [ath9k_htc]
 [<f84dc8ea>] ? invoke_tx_handlers+0xa5a/0xee0 [mac80211]
 [<f82c84f4>] ? ath9k_htc_tx+0x44/0xe0 [ath9k_htc]
 [<f84db7b8>] ? __ieee80211_tx+0xf8/0x190 [mac80211]
 [<f84dce0d>] ? ieee80211_tx+0x9d/0x1a0 [mac80211]
 [<f84dcfac>] ? ieee80211_xmit+0x9c/0x1c0 [mac80211]
 [<f84dd1b5>] ? ieee80211_monitor_start_xmit+0x85/0xb0 [mac80211]
 [<c04c30cd>] ? dev_hard_start_xmit+0x1ad/0x210
 [<c04b97c2>] ? __alloc_skb+0x52/0x130
 [<c04d7cd5>] ? sch_direct_xmit+0x105/0x170
 [<c04c5e9f>] ? dev_queue_xmit+0x37f/0x4b0
 [<c0567e1e>] ? packet_snd+0x21e/0x250
 [<c05684a2>] ? packet_sendmsg+0x32/0x40
 [<c04b4c63>] ? sock_aio_write+0x113/0x130
 [<c0207934>] ? do_sync_write+0xc4/0x100
 [<c0167740>] ? autoremove_wake_function+0x0/0x50
 [<c02f4414>] ? security_file_permission+0x14/0x20
 [<c0207ad4>] ? rw_verify_area+0x64/0xe0
 [<c01e6458>] ? handle_mm_fault+0x338/0x390
 [<c0207cd5>] ? vfs_write+0x185/0x1a0
 [<c058db20>] ? do_page_fault+0x160/0x3a0
 [<c0208512>] ? sys_write+0x42/0x70
 [<c01033ec>] ? syscall_call+0x7/0xb

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoipw2100: register pm_qos request before registering pci driver
John W. Linville [Wed, 11 Aug 2010 20:11:00 +0000 (16:11 -0400)]
ipw2100: register pm_qos request before registering pci driver

It is necessary to call pm_qos_add_request prior to calling
pm_qos_update_request.  It was revealed that ipw2100 has been
doing this wrong since "pm_qos: Get rid of the allocation in
pm_qos_add_request()" (commit 82f682514a5df89ffb3890627eebf0897b7a84ec)
added a WARN that results in the following backtrace:

WARNING: at kernel/pm_qos_params.c:264 pm_qos_update_request+0x5e/0x70()
pm_qos_update_request() called for unknown object
Call Trace:
[<c1024088>] ? warn_slowpath_common+0x78/0xb0
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1024153>] ? warn_slowpath_fmt+0x33/0x40
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<f89fe15f>] ? ipw2100_up+0x3f/0xf10 [ipw2100]
[<c11961c9>] ? vsnprintf+0xc9/0x530
[<f89ff36c>] ? ipw2100_net_init+0x2c/0x1c0 [ipw2100]
[<c12f542d>] ? register_netdevice+0x7d/0x3c0
[<f89f9b00>] ? ipw2100_irq_tasklet+0x910/0x9a0 [ipw2100]
[<c12f579f>] ? register_netdev+0x2f/0x40
[<f89fd471>] ? ipw2100_pci_init_one+0xd21/0x1060 [ipw2100]
[<c11a5ebb>] ? local_pci_probe+0xb/0x10
[<c11a6d49>] ? pci_device_probe+0x69/0x90
[<c1224704>] ? driver_probe_device+0x74/0x180
[<c10dd15a>] ? sysfs_create_dir+0x6a/0xb0
[<c1224889>] ? __driver_attach+0x79/0x80
[<c1224810>] ? __driver_attach+0x0/0x80
[<c1223fa2>] ? bus_for_each_dev+0x52/0x80
[<c1224586>] ? driver_attach+0x16/0x20
[<c1224810>] ? __driver_attach+0x0/0x80
[<c122395f>] ? bus_add_driver+0x17f/0x250
[<c11a5ec0>] ? pci_device_shutdown+0x0/0x20
[<c11a6c80>] ? pci_device_remove+0x0/0x40
[<c1224b13>] ? driver_register+0x63/0x120
[<c11a6f96>] ? __pci_register_driver+0x36/0xa0
[<f84f9048>] ? ipw2100_init+0x48/0x67 [ipw2100]
[<c1001122>] ? do_one_initcall+0x32/0x170
[<c1087078>] ? __vunmap+0xb8/0xf0
[<f84f9000>] ? ipw2100_init+0x0/0x67 [ipw2100]
[<c10510c1>] ? sys_init_module+0x161/0x1000
[<c108f847>] ? sys_close+0x67/0xe0
[<c13647c1>] ? syscall_call+0x7/0xb

This patch moves pm_qos_add_request prior to pci_register_driver in
ipw2100 in order to avoid this problem.

Reported-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluet...
John W. Linville [Tue, 10 Aug 2010 18:55:10 +0000 (14:55 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/holtmann/bluetooth-2.6

14 years agoBluetooth: Use 3-DH5 payload size for default ERTM max PDU size
Mat Martineau [Thu, 5 Aug 2010 22:54:27 +0000 (15:54 -0700)]
Bluetooth: Use 3-DH5 payload size for default ERTM max PDU size

The previous value of 672 for L2CAP_DEFAULT_MAX_PDU_SIZE is based on
the default L2CAP MTU.  That default MTU is calculated from the size
of two DH5 packets, minus ACL and L2CAP b-frame header overhead.

ERTM is used with newer basebands that typically support larger 3-DH5
packets, and i-frames and s-frames have more header overhead.  With
clean RF conditions, basebands will typically attempt to use 1021-byte
3-DH5 packets for maximum throughput.  Adjusting for 2 bytes of ACL
headers plus 10 bytes of worst-case L2CAP headers yields 1009 bytes
of payload.

This PDU size imposes less overhead for header bytes and gives the
baseband the option to choose 3-DH5 packets, but is small enough for
ERTM traffic to interleave well with other L2CAP or SCO data.
672-byte payloads do not allow the most efficient over-the-air
packet choice, and cannot achieve maximum throughput over BR/EDR.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoBluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM
Mat Martineau [Thu, 5 Aug 2010 22:54:23 +0000 (15:54 -0700)]
Bluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM

remote_tx_win is intended to be set on receipt of an L2CAP
configuration request.  The value is used to determine the size of the
transmit window on the remote side of an ERTM connection, so L2CAP
can stop sending frames when that remote window is full.

An incorrect remote_tx_win value will cause the stack to not fully
utilize the tx window (performance impact), or to overfill the remote
tx window (causing dropped frames or a disconnect).

This patch removes an extra setting of remote_tx_win when a
configuration response is received.  The transmit window has a
different meaning in a response - it is an informational value
less than or equal to the local tx_win.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoBluetooth: Change default L2CAP ERTM retransmit timeout
Mat Martineau [Thu, 5 Aug 2010 22:54:20 +0000 (15:54 -0700)]
Bluetooth: Change default L2CAP ERTM retransmit timeout

The L2CAP specification requires that the ERTM retransmit timeout be at
least 2 seconds for BR/EDR connections.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoBluetooth: Fix endianness issue with L2CAP MPS configuration
Mat Martineau [Thu, 5 Aug 2010 22:54:22 +0000 (15:54 -0700)]
Bluetooth: Fix endianness issue with L2CAP MPS configuration

Incoming configuration values must be converted to native CPU order
before use.  This fixes a bug where a little-endian MPS value is
compared to a native CPU value.  On big-endian processors, this
can cause ERTM and streaming mode segmentation to produce PDUs
that are larger than the remote stack is expecting, or that would
produce fragmented skbs that the current FCS code cannot handle.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoiwlagn: fix rts cts protection
Johannes Berg [Mon, 9 Aug 2010 17:57:02 +0000 (10:57 -0700)]
iwlagn: fix rts cts protection

Currently the driver will try to protect all frames,
which leads to a lot of odd things like sending an
RTS with a zeroed RA before multicast frames, which
is clearly bogus.

In order to fix all of this, we need to take a step
back and see what we need to achieve:
 * we need RTS/CTS protection if requested by
   the AP for the BSS, mac80211 tells us this
 * in that case, CTS-to-self should only be
   enabled when mac80211 tells us
 * additionally, as a hardware workaround, on
   some devices we have to protect aggregated
   frames with RTS

To achieve the first two items, set up the RXON
accordingly and set the protection required flag
in the transmit command when mac80211 requests
protection for the frame.

To achieve the last item, set the rate-control
RTS-requested flag for all stations that we have
aggregation sessions with, and set the protection
required flag when sending aggregated frames (on
those devices where this is required).

Since otherwise bugs can occur, do not allow the
user to override the RTS-for-aggregation setting
from sysfs any more.

Finally, also clean up the way all these flags get
set in the driver and move everything into the
device-specific functions.

Cc: stable@kernel.org [2.6.35]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agocfg80211: fix locking in action frame TX
Johannes Berg [Mon, 9 Aug 2010 13:52:03 +0000 (15:52 +0200)]
cfg80211: fix locking in action frame TX

Accesses to "wdev->current_bss" must be
locked with the wdev lock, which action
frame transmission is missing.

Cc: stable@kernel.org [2.6.33+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: fix build break by including linux/sched.h
John W. Linville [Mon, 9 Aug 2010 19:14:21 +0000 (15:14 -0400)]
libertas: fix build break by including linux/sched.h

  CC [M]  drivers/net/wireless/libertas/cfg.o
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_scan_worker’:
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: ‘TASK_NORMAL’ undeclared (first use in this function)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: (Each undeclared identifier is reported only once
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: for each function it appears in.)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_cfg_connect’:
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘signal_pending’
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘schedule_timeout’

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