rt2x00: Properly reserve room for descriptors in skbs.

Instead of fiddling with the skb->data pointer and thereby risking
out of bounds accesses, properly reserve the space needed in an
skb for descriptors.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>

rt2x00: Reverse calling order of bus write_tx_desc and driver write_tx_desc.

For rt2800 reverse the calling order of rt2x00pci_write_data and
rt2800pci_write_data. Currently rt2800pci_write_data calls rt2x00pci_write_data
as there can be only 1 driver callback function specified by the driver.
Reverse this calling order by introducing a new driver callback function,
called write_tx_datadesc, which is called from the bus-specific write_tx_data
functions.
Preparation for futher cleanups in the skb data handling of rt2x00.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>

rt2x00: Push beacon TX descriptor writing to drivers.

Not all the devices require a TX descriptor to be written (i.e. rt2800
device don't require them). Push down the creation of the TX descriptor
to the device drivers so that they can decide for themselves whether
a TX descriptor is to be created.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>

ath9k_htc: fix build error when ATH9K_HTC_DEBUGFS not enabled

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

wl1271: Fix scan parameter handling for 5GHz

The 5GHz bands were scanned without the proper IE's in place, preventing
proper 5GHz scanning. This patches fixes the problem by storing a pointer
to the scan request (with the IE's) for all iterations of scan.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Use proper rates for PSM entry/exit null-funcs for 5GHz

A fixed 1 mbps rate was used for the PSM entry/exit null-func frames. Fix this
by using the basic rates instead.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: the core wl1271 module shouldn't depend on SPI_MASTER

The core wl1271 module can also be used with SDIO, so it should not depend on
SPI_MASTER.

Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Flush TX buffers to air before going to idle

The mac80211 changes to idle almost immediately after transmitting some
frames, such as deauth etc. When going to idle, the wl1271 is disconnected,
which causes TX frames already on buffers, but not yet transmitted, to be
deleted.

To make sure deauth frames reach the air, allow the TX buffers to flush
before proceeding to idle.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Idle handling into own function

As there is more and more stuff triggered by going in and out of idle,
create a separate function for handling that.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Prevent dropping of TX frames in joins

The wl1271 uses a session counter in CMD_JOIN and TX frame descriptors. This
counter is used to determine which frames to drop when the CMD_JOIN is
executed.

The driver executes CMD_JOIN multiple times upon association and sometimes
disassociation, and we don't want any frames to get lost.

Fix this by incrementing the session counter only when leaving idle (not every
CMD_JOIN as before.) Also, remove the TX flush flag from the CMD_JOIN options.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: cleanup: remove unneeded null check

We dereference "wmi" on the line before and also when we initialize "ah".
This check has always been after a dereference since the first commit a
couple months ago.  Looking through the code, it looks like "wmi" can't
actually be null here so I just removed the check.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/prism54: Use memdup_user

Use memdup_user when user data is immediately copied into the
allocated region.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@

-  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+  to = memdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix bug in validating received data length for edma

The rx status length should also be taken into account while
validating the length of a received frame.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix bug in accessing skb->data of rx frame for edma

Skip the rx status portion in skb->data before accessing ieee80211
frame header.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Clean up few function parameters in recv.c

ath9k_rx_skb_preprocess() needs only ieee80211 frame header,
pass only frame headers instead of skb to that function. Also
remove ineffective frame dump in ath9k_process_rate().

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Move driver specific structures

A bunch of data structures are present in the
common module, which are internal to ath9k.
Move them to ath9k.h

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

ath9k: Move ath9k specific RX code to driver

This patch relocates RX processing code from the
common module to ath9k. This reduces the size
of the common module which is also used by ath9k_htc.

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

drivers/net/wireless: Storage class should be before const qualifier

The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: Enable TX IQ calibration on AR9003

To enable it we now disable and re-enable the PHY chips
after TX IQ calibration.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: make action channel type optional

When sending action frames, we want to verify
that we do that on the correct channel. However,
checking the channel type in addition can get in
the way, since the channel type could change on
the fly during an association, and it's not
useful to have the channel type anyway since it
has no effect on the transmission. Therefore,
make it optional to specify so that if wanted,
it can still be checked, but is not required.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: print error message if ANI levels are out of range

Since we have sysfs to manually set the ANI levels, we should print errors to
the kernel log if the values are out of bounds.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: always calculate ANI listen time

Calculate 'listen' time also when automatic ANI is off, since this and the
"busy" time is useful information also in manual mode.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: add sysfs files for ANI parameters

/sys/class/ieee80211/phy0/device/ani/ani_mode
/sys/class/ieee80211/phy0/device/ani/noise_immunity_level
/sys/class/ieee80211/phy0/device/ani/spur_level
/sys/class/ieee80211/phy0/device/ani/firstep_level
/sys/class/ieee80211/phy0/device/ani/ofdm_weak_signal_detection
/sys/class/ieee80211/phy0/device/ani/cck_weak_signal_detection
/sys/class/ieee80211/phy0/device/ani/noise_immunity_level_max
/sys/class/ieee80211/phy0/device/ani/spur_level_max
/sys/class/ieee80211/phy0/device/ani/firstep_level_max

sysfs has a lot of symlinks, so you can find the files also in other locations,
like (by PCI ID) /sys/devices/pci0000:00/0000:00:11.0/ani and others.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: use ath5k_softc as driver data

It's our "private driver data"... It's used more often and hw is the mac80211
part. This makes more sense with the next (sysfs) patch.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: clarify logic when to enable spur mitigation filter

The old code logically did not make sense and seems to have been confused by
the fact that we could have newer EEPROMs on older hardware. In any case the
spur mitigation filter was set if the srev was >= AR5K_SREV_AR5424.

Spur info is available only from EEPROM versions bigger than 5.3 but but the
EEPOM routines will use static values for older versions, so that should be
o.k.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: remove ATH_TRACE macro

Now that we have ftrace, it is not needed any more.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: run NF calibration only every 60 seconds

Since NF calibration interferes with TX and RX and also has been the cause of
other problems (when it's run concurrently with ath5k_reset) we want to run it
less often - every 60 seconds for now.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: Stop queues only for NF calibration

As far as we know, only NF calibration interferes with RX/TX so we can
leave the queues enabled for the other calibrations.

BTW: Stopping the queues is not enough for avoiding transmissions, since there
might be packets in the queue + beacons are also sent regularly! But i leave it
like this until we have a better solution (stopping TX DMA?).

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: move noise floor calibration into tasklet

Seperate noise floor calibration from other PHY calibration and move it to the
tasklet. This is the first step to more separation of different calibrations.

Also move out ath5k_hw_request_rfgain_probe(ah) so we have one clean function
for I/Q calibration on 5111x parts.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: initialize calibration timers

Initialize calibration timers on reset, since otherwise they might be in the
future and the calibration tasklet might not be scheduled for a long time.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rndis_wlan: increase assocbuf size and validate association info offsets from driver

Buffer size for get_association_info was limited to WEXT event size. Since association
info no longer is sent through WEXT, this limit is not needed. Code also did not
check if data get truncated, memory outside buffer might be addressed. Fix all these.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: Enable auto sleep for ar9003

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix power save with auto sleeping

Rx should not be disabed/disabled when hw supports auto sleeping.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Make sure null func frame is acked before going into PS for ar9003

Add missing code to handle nullfunc frame completion in
ath_tx_edma_tasklet().

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: fix several minor description typos

Signed-off-by: Walter Goldens <goldenstranger@yahoo.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: don't refuse HT20 channels on devices that don't support HT40

Don't refuse HT20 channels on devices that don't support HT40.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: Enable RX STBC for AR9271

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

ath9k_htc: Enable SGI in HT20 for AR9271

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

ath9k_htc: Update HT configuration properly

Use BSS_CHANGED_HT to handle HT parameter changes.
The rate information on the target has to be updated
to handle changes in HT configuration.

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

ath9k_htc: Cleanup rate initialization

This patch removes a large chunk of code dealing
with rate management within the driver and simplifying
things by removing the hacky method of calculating
HT changes. A subsequent patch would fix this by
just using BSS_CHANGED_HT from mac80211.

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

ath9k_htc: Initvals update for AR9271

Update from internal systems engineering team.

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

drivers/net/wireless/orinoco: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/p54: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ipw2x00: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwmc3200wifi: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas_tf: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </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>

drivers/net/wireless/libertas: Use kmemdup

Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </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>

ath9k/debug: fixup the return codes

Changed -EINVAL to -EFAULT if copy_to_user() failed.
Changed 0 to -ENOMEM if allocations failed.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k/debug: improve the snprintf() handling

The snprintf() function returns the number of bytes that *would* have
been written (not counting the NULL terminator) and that can potentally
be more than the size of the buffer.

In this patch if there were one liners where string clearly fits into
the buffer, then I changed snprintf to sprintf().  It's confusing to use
the return value of snprintf() as a limitter without verifying that it's
smaller than size.  This is what initially caught my attention here.
If we use the return value of sprintf() instead future code auditors will
assume we've verified that it fits already.

Also I did find some places where it made sense to use the return value
after we've verified that it is smaller than the buffer size.

Finally the read_file_rcstat() function added an explicit NULL terminator
before calling snprintf().  That's unnecessary because snprintf() will
add the null terminator automatically.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix dma direction for map/unmap in ath_rx_tasklet

For edma, we should use DMA_BIDIRECTIONAL, or else use
DMA_FROM_DEVICE.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

libertas: Added callback functions to support SDIO suspend/resume.

In suspend() host sleep is activated using already configured
host sleep parameters through wol command, and in resume() host
sleep is cancelled. Earlier priv->fw_ready flag used to reset and
set in suspend and resume handler respectively. Since after suspend
only host goes into sleep state and firmware is always ready, those
changes in flag state are removed.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Add support for NVS files with 5GHz band parameters

This patch adds support for NVS files with 5GHz band parameters. The change
is done in a backward compatible manner - if 11a is not enabled in the driver,
the driver will allow also old NVS files to be loaded.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1271: Update handling of the NVS file / INI parameters

This patch updates the handling of the NVS file INI-section, trying to make
it slightly more generic, and exposing the parameters being set. This is done
in preparation for 5GHz parameters.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: Increase credit size

This is the maximum supported by the firmware.

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

ath9k_htc: Remove HW queue translation

There is no need to determine the HW queue
for each packet that is transmitted. The endpoint
can be chosen directly based on the queue type
that mac80211 sends down.

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

ath9k_htc: Initialize beacon/CAB queues

This patch initializes the beacon and CAB HW queues
when the driver is loaded.

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

ath9k_htc: Add queue statistics to xmit debugfs file

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

ath9k: Enable Short GI in 20 Mhz for ar9287 and later chips

This patch enables short GI rx at all rates and tx at mcs15
for 20 Mhz channel width also.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/orinoco: Use kzalloc

Use kzalloc rather than the combination of kmalloc and memset.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,size,flags;
statement S;
@@

-x = kmalloc(size,flags);
+x = kzalloc(size,flags);
 if (x == NULL) S
-memset(x, 0, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: enable the baseband watchdog events for AR9003

This enables the baseband watchdog events for the AR9003
family on ath9k. Upon an a baseband watchdog interrupt we reset
the hardware, this should address corner case conditions where
normal operation can stall. Enable ATH_DBG_RESET to be able
to review details of the bb watchdog interrupt once it happens.
If you're curious how often this happens just grep the debugfs
interrupt file.

Cc: Sam Ng <sam.ng@atheros.com>
Cc: Paul Shaw <paul.shaw@atheros.com>
Cc: Don Breslin <don.breslin@atheros.com>
Cc: Cliff Holden <cliff.holden@atheros.com
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: add support for the AR9003 baseband watchdog

The baseband watchdog will monitor blocks of the baseband
through timers and will issue an interrupt when things are
detected to be stalled. It is only available on the AR9003
family.

Cc: Sam Ng <sam.ng@atheros.com>
Cc: Paul Shaw <paul.shaw@atheros.com>
Cc: Don Breslin <don.breslin@atheros.com>
Cc: Cliff Holden <cliff.holden@atheros.com
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: add the minstrel_ht rate control algorithm

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

rt2x00: Move rt2x00debug_dump_frame declaration to rt2x00.h.

This allows rt2x00debug_dump_frame to be used from everywhere.

This is preparation for beacon writing clean ups.

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

wl1271: remove sdio ARM dependency

Make it possible to use wl1271's SDIO interface on non-ARM platforms.

Fully tested on a x86 platform, compile-tested on ARM.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: rename the ar9003_initvals.h to ar9003_2p0_initvals.h

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: add support for the AR9003 2.2

The checksums of the initvals are:

initvals -f ar9003-2p2
0x00000000c2bfa7d5        ar9300_2p2_radio_postamble
0x00000000ada2b114        ar9300Modes_lowest_ob_db_tx_gain_table_2p2
0x00000000e0bc2c84        ar9300Modes_fast_clock_2p2
0x00000000056eaf74        ar9300_2p2_radio_core
0x0000000000000000        ar9300Common_rx_gain_table_merlin_2p2
0x0000000078658fb5        ar9300_2p2_mac_postamble
0x0000000023235333        ar9300_2p2_soc_postamble
0x0000000054d41904        ar9200_merlin_2p2_radio_core
0x000000008475a084        ar9300_2p2_baseband_postamble
0x000000009aaafd90        ar9300_2p2_baseband_core
0x000000003df9a326        ar9300Modes_high_power_tx_gain_table_2p2
0x000000001cfba124        ar9300Modes_high_ob_db_tx_gain_table_2p2
0x0000000011302700        ar9300Common_rx_gain_table_2p2
0x00000000a9a2b114        ar9300Modes_low_ob_db_tx_gain_table_2p2
0x00000000a9d66d40        ar9300_2p2_mac_core
0x000000001e1d0800        ar9300Common_wo_xlna_rx_gain_table_2p2
0x00000000a0c531c8        ar9300_2p2_soc_preamble
0x00000000292e2544        ar9300PciePhy_pll_on_clkreq_disable_L1_2p2
0x000000002d3e2544        ar9300PciePhy_clkreq_enable_L1_2p2
0x00000000293e2544        ar9300PciePhy_clkreq_disable_L1_2p2

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwl8k: use the dma state API instead of the pci equivalents

The DMA API is preferred.

No functional change.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'wireless-next-2.6' of git://git./linux/kernel/git/iwlwifi/iwlwifi-2.6

ssb: fix NULL ptr deref when pcihost_wrapper is used

Ethernet driver b44 does register ssb by it's pcihost_wrapper
and doesn't set ssb_chipcommon. A check on this value
introduced with commit d53cdbb94a52a920d5420ed64d986c3523a56743
and ea2db495f92ad2cf3301623e60cb95b4062bc484 triggers:

BUG: unable to handle kernel NULL pointer dereference at 00000010
IP: [<c1266c36>] ssb_is_sprom_available+0x16/0x30

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: make a function static

sparse correctly complains that
__ieee80211_get_channel_mode is not static.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

libertas: fix uninitialized variable warning

Fixes:

drivers/net/wireless/libertas/rx.c: In function process_rxed_802_11_packet:
drivers/net/wireless/libertas/rx.c:354: error: radiotap_hdr.flags may be used uninitialized in this function

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix bug in the way "bf_tx_aborted" of struct ath_buf is used

This bug was introduced by the following commit

Author: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Date:   Thu Apr 15 17:38:46 2010 -0400

ath9k: Remove ATH9K_TX_SW_ABORTED and introduce a bool for this purpose

Wrong buffer is checked for bf_tx_aborted field in ath_tx_num_badfrms(),
this may result in a rate scaling with wrong feedback (number
of unacked frames in this case). It is the last one in the chain
of buffers for an aggregate frame that should be checked.

Also it misses the initialization of this field in the buffer,
this may lead to a situation where we stop the sw retransmission
of failed subframes associated to this buffer.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix ath_print in xmit for hardware reset.

ath_print in xmit.c should say "Reseting hardware"
instead of Resetting HAL!(since HAL is being fazed out).
dmesg shows:
[ 8660.899624] ath: Failed to stop TX DMA in 100 msec after killing last frame
[ 8660.899676] ath: Unable to stop TxDMA. Reset HAL!

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ar9170usb: fix read from freed driver context

Commit "ar9170: wait for asynchronous firmware loading"
introduced a bug, which is triggered by fatal errors
while the driver is initializing the device.

BUG: unable to handle kernel paging request at 6b6b6bf7
IP: [<c117b567>] kobject_put+0x7/0x70
*pde = 00000000
Oops: 0000 [#1] PREEMPT
last sysfs file: /sys/devices/platform/hdaps/position
Modules linked in: ar9170usb [...]

Pid: 6246, comm: firmware/ar9170 Not tainted 2.6.34-wl #54
EIP: 0060:[<c117b567>] EFLAGS: 00010206 CPU: 0
EIP is at kobject_put+0x7/0x70
EAX: 6b6b6bd7 EBX: f4d3d0e0 ECX: f5ba9124 EDX: f6af2a7c
ESI: 00000000 EDI: f4d3d0e0 EBP: 00000000 ESP: f5e98f9c
 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process firmware/ar9170 (pid: 6246)
Stack:
 c12532ed 00000246 f5bfaa70 f8487353 f4d3d0e0
Call Trace:
 [<c12532ed>] ? device_release_driver+0x1d/0x30
 [<f8487353>] ? ar9170_usb_firmware_failed+0x43/0x70 [ar9170usb]
 [<c125983c>] ? request_firmware_work_func+0x2c/0x70
 [<c1259810>] ? request_firmware_work_func+0x0/0x70
 [<c10413f4>] ? kthread+0x74/0x80
 [<c1041380>] ? kthread+0x0/0x80
 [<c1003136>] ? kernel_thread_helper+0x6/0x10
Code: 40 d3 f2 ff 85 c0 89 c3 74 0a ba 44 86 4c c1 e8 [...]
EIP: [<c117b567>] kobject_put+0x7/0x70 SS:ESP 0068:f5e98f9c
CR2: 000000006b6b6bf7
---[ end trace e81abb992434b410 ]---

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Revert "rt2x00: Fix rt2800usb TX descriptor writing."

This reverts commit 663cb47cc2c5acd32850f67d051e47d62ed199c9.

This patch was merged out of the proper order, so instead of fixing a
problem with a prior (unmerged) patch, it creates one.  Ooops!

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

ath9k: remove VEOL support for ad-hoc

With VEOL, Beacon transmission in ad-hoc does not currently work.
I believe for larger ad-hoc networks, VEOL is too unreliable, as
it can get beacon transmissions stuck during synchronization.
Use SWBA based beacon trasmission similar to AP mode instead.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Benoit Papillault <benoit.papillault@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: change beacon allocation to prefer the first beacon slot

This fixes IBSS beacon transmissions without VEOL enabled

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

ath9k: Fix rx of mcast/bcast frames in PS mode with auto sleep

The functionality to keep the device awake until it is done with
the rx of any mcast/bcast frames which are pending on AP should
also be added to the hardwares which support auto sleep feature.
This patch fixes frequent failures in ARP resolution when it is
initiated by the other end. Currently auto sleep is enabled only
for ar9003 in ath9k.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: fix sta_info.h kernel-doc warnings

Fix sta_info.h kernel-doc warnings:

Warning(net/mac80211/sta_info.h:164): No description found for parameter 'tid_active_rx[STA_TID_NUM]'
Warning(net/mac80211/sta_info.h:164): Excess struct/union/enum/typedef member 'tid_state_rx' description in 'sta_ampdu_mlme'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: fix mac80211.h kernel-doc warnings

Fix kernel-doc warnings in mac80211.h:

Warning(include/net/mac80211.h:838): No description found for parameter 'ap_addr'
Warning(include/net/mac80211.h:1726): No description found for parameter 'get_survey'

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

iwlwifi: testing the wrong variable in iwl_add_bssid_station()

The intent here is to test that "sta_id_r" is a valid pointer.  We do
this same test later on in the function.

Btw iwl_add_bssid_station() is called from two places and "sta_id_r" is
a valid pointer from both callers.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: rare leak in ath9k_hif_usb_alloc_tx_urbs()

This is obviously a small picky thing.  The original error handling code
doesn't free the most recent allocations which haven't been added to the
hif_dev->tx.tx_buf list yet.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: dereferencing before check in hif_usb_tx_cb()

After c11d8f89d3b7: "ath9k_htc: Simplify TX URB management" we no longer
assume that tx_buf is a non-null pointer.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rt2x00: Fix rt2800usb TX descriptor writing.

The recent changes to skb handling introduced a bug in the rt2800usb
TX descriptor writing whereby the length of the USB packet wasn't
calculated correctly.
Found via code inspection, as the devices themselves didn't seem to mind.

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

rt2x00: Fix failed SLEEP->AWAKE and AWAKE->SLEEP transitions.

(Based on a patch created by Ondrej Zary)

In some circumstances the Ralink devices do not properly go to sleep
or wake up, with timeouts occurring.
Fix this by retrying telling the device that it has to wake up or
sleep.

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

Revert "ath9k: Group Key fix for VAPs"

This reverts commit 03ceedea972a82d343fa5c2528b3952fa9e615d5.

This patch was reported to cause a regression in which connectivity is
lost and cannot be reestablished after a suspend/resume cycle.

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

wireless: update gfp/slab.h includes

Implicit slab.h inclusion via percpu.h is about to go away.  Make sure
gfp.h or slab.h is included as necessary.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rt2x00: don't use to_pci_dev in rt2x00pci_uninitialize

Don't use to_pci_dev in rt2x00pci_uninitialize to get the allocated irq
as it won't work for platform devices (SoC). Instead, use the irq field
that's already used everywhere else.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: consistently use rx_bufsize for RX DMA

We should use the same buffer size we set up for DMA also in the hardware
descriptor. Previously we used common->rx_bufsize for setting up the DMA
mapping, but used skb_tailroom(skb) for the size we tell to the hardware in the
descriptor itself. The problem is that skb_tailroom(skb) can give us a larger
value than the size we set up for DMA before. This allows the hardware to write
into memory locations not set up for DMA. In practice this should rarely happen
because all packets should be smaller than the maximum 802.11 packet size.

On the tested platform rx_bufsize is 2528, and we allocated an skb of 2559
bytes length (including padding for cache alignment) but sbk_tailroom() was
2592. Just consistently use rx_bufsize for all RX DMA memory sizes.

Also use the return value of the descriptor setup function.

Cc: stable@kernel.org
Signed-off-by: Bruno Randolf <br1@einfach.org>
Reviewed-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: add missing braces

Specifying a valid channel type will get
goto out rather than continuing, due to
missing braces. This affects both remain
on channel and action frame TX commands.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rndis_wlan: replace wireless_send_event with cfg80211_disconnected

Remove (hopefully) last use of WEXT in rndis_wlan. Replace wireless_send_event
with missing cfg80211_disconnected in rndis_wlan_do_link_down_work.

Reported-by: "Rogério Brito" <rbrito@ime.usp.br>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove AR9003 from PCI IDs for now

We tried to squeeze as much AR9003 support into this kernel
release cycle but there are a few features which are still
being tested and developed. Some of these features are critical
to the stable operation of AR9003 so for now disable AR9003 support
all together. This will get re-enabled once all necessary features
are in place but very likely will not happen for 2.6.35.

Reviewed-by: Don Breslin <don.breslin@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: fix crash in cfg80211_set_freq()

Since wdev can be NULL, check it before dereferencing it

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

wl1271: Fix RX data path frame lengths

The current frame length used by the driver for RX frames is the SPI bus
transfer length. This length has padding bytes, which do not belong to the
WLAN frame.

As there is no other length information in the WLAN frame except the skb
length this problem caused for instance extra ESSID's to be listed at the
end of scan results (IE id 0) with zero length.

Fix the frame length by removing padding.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlwifi: fix internal scan race

It is possible for internal scan to race against itself if the device is
not returning the scan results from first requests. What happens in this
case is the cleanup done during the abort of the first internal scan also
cleans up part of the new scan, causing it to access memory it shouldn't.

Here are details:
* First internal scan is triggered and scan command sent to device.
* After seven seconds there is no scan results so the watchdog timer
  triggers a scan abort.
* The scan abort succeeds and a SCAN_COMPLETE_NOTIFICATION is received for
 failed scan.
* During processing of SCAN_COMPLETE_NOTIFICATION we clear STATUS_SCANNING
  and queue the "scan_completed" work.
** At this time, since the problem that caused the internal scan in first
   place is still present, a new internal scan is triggered.
The behavior at this point is a bit different between 2.6.34 and 2.6.35
since 2.6.35 has a lot of this synchronized. The rest of the race
description will thus be generalized.
** As part of preparing for the scan "is_internal_short_scan" is set to
true.
* At this point the completion work for fist scan is run. As part of this
  there is some locking missing around the "is_internal_short_scan"
  variable and it is set to "false".
** Now the second scan runs and it considers itself a real (not internal0
   scan and thus causes problems with wrong memory being accessed.

The fix is twofold.
* Since "is_internal_short_scan" should be protected by mutex, fix this in
  scan completion work so that changes to it can be serialized.
* Do not queue a new internal scan if one is in progress.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=15824

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: Fix signal_type comparison

signal_type is enum cfg80211_signal_type.

This fixes the gcc warning:

scan.c: In function `cfg80211_inform_bss':
scan.c:518:6: warning: comparison between `enum cfg80211_signal_type' and `enum nl80211_bss'
scan.c: In function `cfg80211_inform_bss_frame':
scan.c:574:6: warning: comparison between `enum cfg80211_signal_type' and `enum nl80211_bss'

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

net: fix problem in dequeuing from input_pkt_queue

Fix some issues introduced in batch skb dequeuing for input_pkt_queue.
The primary issue it that the queue head must be incremented only
after a packet has been processed, that is only after
__netif_receive_skb has been called.  This is needed for the mechanism
to prevent OOO packet in RFS.  Also when flushing the input_pkt_queue
and process_queue, the process queue should be done first to prevent
OOO packets.

Because the input_pkt_queue has been effectively split into two queues,
the calculation of the tail ptr is no longer correct.  The correct value
would be head+input_pkt_queue->len+process_queue->len.  To avoid
this calculation we added an explict input_queue_tail in softnet_data.
The tail value is simply incremented when queuing to input_pkt_queue.

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