cfg80211: remove WARN_ON in __cfg80211_sme_scan_done

cfg80211_sme_scan_done() can be called (by fullmac cards) with
wdev->conn == NULL when CFG80211_SME_CONNECTING. We quit silently
instead of WARN_ON in this case.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: remove key caches in driver

cfg80211 now guarantees keys are set after connecting. We can remove
the key cache code from the driver now.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: make iwm_send_wifi_if_cmd return 0 on success

We used to return the result of wait_event_interruptible_timeout()
which is the remaining timeout on success. But this information is
not used by any of its callers. So we just return 0 on success.
This fixed a erroneous return value bug for iwm_set_key().

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: remove setting WEP keys before setting essid support

The recent cfg80211 "rework key operation" patch from Johannes Berg
makes sure keys are set only after the connection has been
established. So we can remove the setting WEP keys before essid
support from the driver.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: cfg80211 managed mode port

This patch ports iwmc3200wifi to the cfg80211 managed mode API.

Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: use correct debug level

This patch uses TX and RX instead of NTF debug levels in some hot
paths.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: set cipher_suites before registering wiphy

We need to specify all the cipher suites we supported. Otherwise
cfg80211_validate_key_settings() will fail when we are setting
keys.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: hardware does not support IP checksum

The iwmc3200wifi hardware doesn't support IP checksum. So mark the
skb->ip_summed to CHECKSUM_NONE instead of CHECKSUM_UNNECESSARY.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwmc3200wifi: fix UMAC INIT_COMPLETE notification handling

The patch fixes the missing UMAC iwm_umac_wifi_in_hdr header in
the UMAC INIT_COMPLETE (iwm_umac_notif_init_complete) notification.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

hostap_cs: Enable shared interrupts

The hostap_cs driver is programmed for exclusive rather that shared
interrupts.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-and-Tested-by: Jack Schneider <puck@dp-indexing.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: remove print_mac uses

Use %pM instead, and also remove stray variables
declared with DECLARE_MAC_BUF.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add AR9287 based chipsets' register information.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: treat ieee80211_regdom hints as user hints

We were treating ieee80211_regdom module parameter hints
as core hints, this means we were not letting the user help
compliance further when using the module parameter. It also
meant that users with a device with a custom regulatory
domain set (wiphy->custom_regulatory) using this module
parameter were being stuck to the original default core
static regualtory domain. We fix this by using the static
cfg80211_regdomain alpha2 as the core hint and treating the
module parameter separately.

All iwlwifi and ath5k/ath9k/ar9170 devices which world roam
set the wiphy->custom_regulatory. This change allows users
using this module parameter to have it trated as a a proper
user hint and not have it ignored.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: disable radio when all devices are marked idle

This uses the new configuration changes indicated up by
mac80211 when all interfaces are marked idle. We need to do
a little more work as we have our own set of virtual
wiphys within ath9k.

Only when all virtual wiphys are inactive do we allow an idle
state change for a wiphy to trigger disabling the radio.

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

ath9k: serialize ath9k_ps_{wakeup,restore} calls

These functions are changing the power mode of the chip, but this may
have unpredictable effects, if another code are trying to set the power
mode via 'ath9k_hw_setpower' in the same time from another context.

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: uninline ath9k_ps_{wakeup,restore} functions

Uninline these functions before we add functional changes to them.

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: serialize ath9k_hw_setpower calls

Because ath9k_setpower is called from various contexts, we have to
protect it against concurrent calls.

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Remove pointless ath9k_ps_restore() in ath_detach()

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

ath9k: Handle tx desc shortage more appropriately

Update tx BA window and complete the frame as failed
one if we can't clone the holding descriptor due to
unavailability of descriptors.

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

ath9k: Remove bogus assert in ath_clone_txbuf()

oops, this one should be part of the original patch
"ath9k: downgrade assert in ath_clone_txbuf()"

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

ath9k: Fix TX hang issue with Atheros chipsets

The hardware doesn't generate interrupts in some cases and so work
around this by monitoring the TX status periodically and reset the
chip if required.

This behavior of the hardware not generating the TX interrupts can
be noticed through ath9k debugfs interrupt statistics when heavy
traffic is being sent from STA to AP. One can easily see this behavior
when the STA is transmitting at a higher rates. The interrupt statistics
in the debugfs interface clearly shows that only RX interrupts alone
being generated and TX being stuck.

TX should be monitored through a timer and reset the chip only when
frames are queued to the hardware but TX interrupts are not generated
for the same even after one second. Also, we shouldn't remove holding
descriptor from AC queue if it happens to be the only descriptor and
schedule TX aggregation regarless of queue depth as it improves
scheduling of AMPDUs from software to hardware queue.

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

ath9k: RX stucks during heavy traffic in HT40 mode.

Running iperf along with p2p traffic on both TX and RX side then
stop one side, then stop the other side, then start it up again,
eventually the STA gets into a mode that it can not pass data at
all.

A hardware workaround for invalid RSSI can make FIFO write pointer
to jump over read pointer, causing RX data corruption and repeated
DMA. Both TX and RX works fine when the workaround is disabled.

To replace the original hardware work around, software looks for
frames with post delimiter CRC error and mark the RSSI invalid so
that the upperlayer will not use the RSSI associated with this
frame. So disable the hardware workaround by updating the appropriate
registers.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Manipulate and report the correct RSSI

RSSI reported by the RX descriptor requires little manipulation.
Manipulate and report the correct RSSI to the stack. This will
fix the improper signal levels reported by iwconfig iw dev wlanX
station dump. Also the Link Quality reported seems to be varying
(falls to zero also sometimes) when iperf is run from STA to AP.

Also use the default noise floor for now as the one reported
during the caliberation seems to be wrong.

The Signal and Link Quality before this patch (taken while TX is
in progress from STA to AP)

09:59:13.285428037 Link Quality=29/70  Signal level=-81 dBm
09:59:13.410660084 Link Quality=20/70  Signal level=-90 dBm
09:59:13.586864392 Link Quality=21/70  Signal level=-89 dBm
09:59:13.710296281 Link Quality=21/70  Signal level=-89 dBm
09:59:13.821683064 Link Quality=25/70  Signal level=-85 dBm
09:59:13.933402989 Link Quality=24/70  Signal level=-86 dBm
09:59:14.045839276 Link Quality=26/70  Signal level=-84 dBm
09:59:14.193926673 Link Quality=23/70  Signal level=-87 dBm
09:59:14.306230262 Link Quality=31/70  Signal level=-79 dBm
09:59:14.419459667 Link Quality=26/70  Signal level=-84 dBm
09:59:14.530711167 Link Quality=37/70  Signal level=-73 dBm
09:59:14.642593962 Link Quality=29/70  Signal level=-81 dBm
09:59:14.754361169 Link Quality=21/70  Signal level=-89 dBm
09:59:14.866217355 Link Quality=21/70  Signal level=-89 dBm
09:59:14.976963623 Link Quality=28/70  Signal level=-82 dBm
09:59:15.089149809 Link Quality=26/70  Signal level=-84 dBm
09:59:15.205039887 Link Quality=27/70  Signal level=-83 dBm
09:59:15.316368003 Link Quality=23/70  Signal level=-87 dBm
09:59:15.427684036 Link Quality=36/70  Signal level=-74 dBm
09:59:15.539756380 Link Quality=21/70  Signal level=-89 dBm
09:59:15.650549093 Link Quality=22/70  Signal level=-88 dBm
09:59:15.761171672 Link Quality=32/70  Signal level=-78 dBm
09:59:15.872793750 Link Quality=23/70  Signal level=-87 dBm
09:59:15.984421694 Link Quality=22/70  Signal level=-88 dBm
09:59:16.097315093 Link Quality=21/70  Signal level=-89 dBm

The link quality and signal level after this patch (take while
TX is in progress from STA to AP)

17:21:25.627848091 Link Quality=65/70  Signal level=-45 dBm
17:21:25.762805607 Link Quality=65/70  Signal level=-45 dBm
17:21:25.875521888 Link Quality=66/70  Signal level=-44 dBm
17:21:25.987468448 Link Quality=66/70  Signal level=-44 dBm
17:21:26.100628151 Link Quality=66/70  Signal level=-44 dBm
17:21:26.213129671 Link Quality=66/70  Signal level=-44 dBm
17:21:26.324923070 Link Quality=65/70  Signal level=-45 dBm
17:21:26.436831357 Link Quality=65/70  Signal level=-45 dBm
17:21:26.610356973 Link Quality=65/70  Signal level=-45 dBm
17:21:26.723340047 Link Quality=65/70  Signal level=-45 dBm
17:21:26.835715293 Link Quality=64/70  Signal level=-46 dBm
17:21:26.949542748 Link Quality=64/70  Signal level=-46 dBm
17:21:27.062261613 Link Quality=65/70  Signal level=-45 dBm
17:21:27.174511563 Link Quality=64/70  Signal level=-46 dBm
17:21:27.287616232 Link Quality=64/70  Signal level=-46 dBm
17:21:27.400598119 Link Quality=64/70  Signal level=-46 dBm
17:21:27.511381404 Link Quality=64/70  Signal level=-46 dBm
17:21:27.624530421 Link Quality=65/70  Signal level=-45 dBm
17:21:27.737807109 Link Quality=64/70  Signal level=-46 dBm
17:21:27.850861352 Link Quality=65/70  Signal level=-45 dBm
17:21:27.963369436 Link Quality=64/70  Signal level=-46 dBm
17:21:28.076582289 Link Quality=64/70  Signal level=-46 dBm

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

ath9k: Nuke struct ath_tx_ratectrl_state

Move its only member (u8 per) to struct ath_rate_priv.

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

ath9k: Use probe interval instead of rssi reduce interval

Get rid of rssi reduce interval.

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

ath9k: Remove unused members from rate control structure

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

ath9k: Remove dead code in rate control

ath9k rate control is based on only PER (packet error rate),
remove unused code which was intented to do rssi based rate
selection.

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

ath9k: remove rate control wraper

After the cleanup we just use get_rate as a wrapper, skip
the wrapper.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: add helper for management / no-ack frame rate decision

All current rate control algorithms agree to send management and no-ack
frames at the lowest rate. They also agree to do this when sta
and the private rate control data is NULL. We add a hlper to mac80211
for this and simplify the rate control algorithm code.

Developers wishing to make enhancements to rate control algorithms
are for broadcast/multicast can opt to not use this in their
gate_rate() mac80211 callback.

Cc: Zhu Yi <yi.zhu@intel.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: ipw3945-devel@lists.sourceforge.net
Cc: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlwifi: use ieee80211_is_data(fc)

iwl-agn-rs.c already uses this.

Cc: Zhu Yi <yi.zhu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: ipw3945-devel@lists.sourceforge.net
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: make minstrel/pid RC use ieee80211_is_data(fc)

Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove unnecessary IEEE80211_TX_CTL_NO_ACK checks

We check for this condition early on in our mac80211 get_rate()
callback ath_get_rate(), so remove this check later down the path.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: rename ath_rc_ratefind_ht() to ath_rc_get_highest_rix()

The purpose is to find the highest rate we can use.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remap ATH9K_MODE_*

There are a lot of gaps here.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove ATH9K_MODE_11B

This saves us 2733 bytes.

   text    data     bss     dec     hex filename
 252265    3628    1584  257477   3edc5 ath9k-has-b-rate.ko
 249905    3628    1584  255117   3e48d ath9k.ko

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Siged-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove unused ath_rc_isvalid_txmask()

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: rename ath_rc_get_nextlowervalid_txrate()

What this does is get us our next lower rate so call it that,
ath_rc_get_lower_rix().

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove pointless wrapper ath_rc_rate_getidx()

This is just calling another helper, so just use the other
helper directly. This should make it clear that when do not
find the next rate we stick to the current one.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove unused stepdown when looking for the next rate

This is not used, remove this.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: remove unused min rate calculation code

This is not used, and when we need to get the lowest rate
we should simply use mac80211's own rate_lowest_index(sband, sta).

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: cleanup try count for MRR in rate control

This has no functional change and just cleans up the code
to be more legible and removes a useless variable for
Multi Rate Retry.

For regular frames we use 2 retries for MRR segments [0-2].
For the last MRR segment [3] we use 4.

MRR[0] = 2
MRR[1] = 2
MRR[2] = 2
MRR[3] = 4

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlwifi: remove rs_get_rate workaround

This removes the work around implemented for transmitting on
an unsupported band on iwlwifi. This was added via the patch:

8e1856e82cb8f541e925738bebfbc473420cda68:
iwlwifi: fix rs_get_rate WARN_ON()

Cc: Mohamed Abbas <mohamed.abbas@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: downgrade assert in rc.c for invalid rate

The case where no vaid rate is found should not happen now
but to help debugging and downgrade this to a warn.

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

mac80211: drop frames for sta with no valid rate

When we're associated we should be able to send data to
target sta. If we cannot we may be trying to use the incorrect
band to talk to the sta. Lets catch any such cases, warn, and
drop the frames to not invalidate assumptions being made on
rate control algorithms when they have a valid sta to
communicate with. Any such cases should be handled and fixed.

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

wireless: wl12xx, fix lock imbalance

Add omitted mutex_unlock to one of wl12xx_op_start fail paths (when
wl12xx_chip_wakeup fails).

[v2]
Power off the device, because:
\= cite from http://marc.info/?l=linux-kernel&m=124755028209880&w=2
If the chip cannot be booted, why should it remain powered on?
In some rare cases, the chip might fail to initialize, but can
recover if powered off and on again, so turning it off at this
point is the right thing to do. =/

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlwifi: make some logging functions static/unexport

iwl_dump_nic_error_log can be static and iwl_dump_nic_event_log
doesn't need to be exported.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtl8187: updating Kconfig with info of branded devices

Adding more detailed info about Asus motherboards and Ralink devices.

Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

zd1211rw: adding Accton Technology Corp (083a:e501) as a ZD1211B device

New device supported by the zd1211rw driver reported to linux-wireless.
Device string from lsusb:
"ID 083a:e501 Accton Technology Corp. ZD1211B"

RF type from dmesg:
zd1211b chip 083a:e501 v4810 high 00-1a-2a AL2230_RF pa0 g--NS

Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Tested-by: Adrián Cereto<ssorgatem@esdebian.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: fix unregistration

The work that we cancel there requires the cfg80211_mutex,
so we can't cancel it under the mutex, which is fine, we
can just move it to after the locked section.

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

mac80211: cancel the connection monitor timers/work

In "mac80211: monitor the connection" I forgot to
add code to cancel the new timers & work when the
interface is brought down, which isn't a problem
if you just bring it down, but _is_ a problem when
you destroy the interface. Correct this lapse.

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

drivers/net: Drop unnecessary NULL test

The result of container_of should not be NULL.  In particular, in this case
the argument to the enclosing function has passed though INIT_WORK, which
dereferences it, implying that its container cannot be NULL.

A simplified version of the semantic patch that makes this change is as
follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
identifier fn,work,x,fld;
type T;
expression E1,E2;
statement S;
@@

static fn(struct work_struct *work) {
  ... when != work = E1
  x = container_of(work,T,fld)
  ... when != x = E2
- if (x == NULL) S
  ...
}
// </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>

cfg80211: fix disabling WPA via wext (SIOCSIWAUTH)

cfg80211_set_wpa_version completely missed the use case when disabling
WPA, considering IW_AUTH_WPA_VERSION_DISABLED an invalid argument. This
caused weird error messages in wpa_supplicant.

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rt2x00: Remove DEVICE_STATE_DISABLED_RADIO_HW

The DEVICE_STATE_DISABLED_RADIO_HW flag is only read but never set,
it is an ancient part of one of the many versions of the rfkill implementations
in rt2x00. It is about time is disappears.

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

ar9170: implement transmit aggregation

This patch roughly implements xmit aggregation for ar9170-like device.
Not all AP are compatible with the driver(and firmware) yet, so YMMV.

A more refined code will definitely need the final HT specification
to be available for the public, lots of firmware modification and
possibly a redesigned driver just for good measure.
Sadly, these conditions won't come true anytime soon...

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

p54: generate channel list dynamically

This patch enhances the eeprom parser to generate customized
channel list for every device.

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

cfg80211: fix more bugs in mlme handling

The "what-was-I-thinking-if-anything" patch. Clearly,
if cfg80211_send_disassoc() does wdev_lock() and then
calls __cfg80211_send_disassoc(), the latter shouldn't
lock again. And the sme_state test is ... no further
comments.

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

rt2x00: Implement set_tim callback for all drivers

Implement set_tim callback for all rt2x00 drivers, this makes the
device wake up powersaving stations properly while in AP mode.

The only way to update the beacon is by simply calling mac80211 and
requesting the new beacon. This means the set_tim() event is mostly the
same as a beacon_done() event which was already defined in rt2x00lib.

Signed-off-by: Stefan Steuerwald <salsasepp@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

nl80211: report BSS status

When connected to a BSS, or joined to an IBSS, we'll want
to know in userspace without using wireless extensions, so
report the BSS status in the BSS list. Userspace can query
the BSS list, display all the information and retrieve the
station information as well.

For example (from hwsim):

$ iw dev wlan1 scan dump
BSS 02:00:00:00:00:00 (on wlan1) -- associated
freq: 2462
beacon interval: 100
capability: ESS ShortSlotTime (0x0401)
signal: -50.00 dBm
SSID: j
Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0
DS Paramater set: channel 11
ERP: <no flags>
Extended supported rates: 24.0 36.0 48.0 54.0

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

cfg80211: fix wext setting SSID

Pavel reported that you can't set the SSID from "foo" to
"bar". I tried reproducing, but used different values,
with different lengths, and thus never saw the obvious
problem.

Reported-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: don't look at wdev->ssid for giwessid

This variable is only used internally, _while_ connected.
If we use it, the sequence

# iwconfig wlan1 essid foo
<connects>
# iwconfig wlan1 essid ""
<disconnects>
# iwconfig

will still display "foo" as the SSID afterwards, which
is obviously quite bogus. Fix this by only displaying
the wext SSID, if present.

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

mac80211_hwsim: report fixed signal strength

There's no reason to think that hwsim has any
actual signal strength, but for testing it is
very useful to have it report _some_ value to
the stack so I can see if the value ends up
being reported correctly

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

cfg80211: fix wext stats

Instead of using the wext BSSID which may be NULL if
you haven't explicitly set one, we should instead use
the current_bss pointer -- if that's NULL we aren't
connected anyway. Fixes missing signal quality output
reported to me internally at Intel.

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

cfg80211: update misleading comment

In cfg80211_scan_request n_channels refers to the total number
of channels to scan. Update the misleading comment accordingly.

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

mac80211: mesh: fix two small problems

1) there's a spin_lock() that needs to be spin_lock_bh()
2) action frames of size 24 might cause an out-of-bounds
   memory access (for the 25th byte only, so no big deal)

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

cfg80211: fix a locking bug

The cfg80211_sme_disassoc() function is already holding
a lock here that cfg80211_mlme_deauth() would take, so
it needs to use __cfg80211_mlme_deauth() instead.

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

mac80211: monitor the connection

With the recent MLME rework I accidentally removed the connection
monitoring code. In order to add it back, this patch will add new
code to monitor both for beacon loss and for the connection actually
working, with possibly separate triggers.

When no unicast frames have been received from the AP for (currently)
two seconds, we will send the AP a probe request. Also, when we don't
see beacons from the AP for two seconds, we do the same (but those
times need not be the same due to the way the code is now written).

Additionally, clean up the parameters to the ieee80211_set_disassoc()
function that I need here, those are all useless except sdata.

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

mac80211: fix multi-use timer

We have, sometimes, multiple things that want to
run but don't have their own timer. Introduce a
new function to mac80211's mlme run_again() that
makes sure that the timer will run again at the
_first_ needed time, use that function and also
properly reprogram the timer once it fired.

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

iwlagn: fix minimum number of queues setting

We need to provide a reasonable minimum that will result in a
working setup if used. Set minimum to be 10 to provide for
4 standard TX queues + 1 command queue + 2 (unused) HCCA queues +
4 HT queues (one per AC).

We allow the user to change the number of queues used via a module
parameter and use this minimum value to check if it is valid. Without
this patch a user can select a value for the number of queues that
will result in a failing setup.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwl3945: cleanup number of queues settings

* Rename maximum number of queue (TFD_QUEUE_MAX) to IWL39_NUM_QUEUES to
  be consistent with rest of iwlwifi.
* Remove unused defines.
* Fix loops that iterate over number of TX queues to stop when maximum is reached
  (currently it is maximum + 1).
* Remove queues_num module parameter as it is not used.

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

iwlwifi: fix permissions on debugfs files

debugfs files are created with 644 permissions which gives everybody
read access. This presents a security issue if a user opens the file and
holds it open at the time the driver removes the file. At this point
invalid memory will be accessed.

Fix this by only allowing root to read debugfs files.

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

iwlwifi: move show_qos to debugfs

This move the show_qos file from sysfs to debugfs because the "one
value per file" sysfs rule.

The file is located in
/sys/kernel/debug/ieee80211/phy0/iwlagn/data

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: fix NULL dereference in IBSS SIOCGIWAP

This patch avoids memcpy from wdev->wext.ibss.bssid if it is NULL.
This could happen if we SIOCGIWAP before SIOCSIWAP.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: fix supported cards for rtl8187

Different revisions of WUSB54GC-EU use different chipsets -
v2 uses rtl8187, but v3 uses Ralink RT3070.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Przemyslaw Kulczycki <azrael@autocom.pl>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: rework key operation

This reworks the key operation in cfg80211, and now only
allows, from userspace, configuring keys (via nl80211)
after the connection has been established (in managed
mode), the IBSS been joined (in IBSS mode), at any time
(in AP[_VLAN] modes) or never for all the other modes.

In order to do shared key authentication correctly, it
is now possible to give a WEP key to the AUTH command.
To configure static WEP keys, these are given to the
CONNECT or IBSS_JOIN command directly, for a userspace
SME it is assumed it will configure it properly after
the connection has been established.

Since mac80211 used to check the default key in IBSS
mode to see whether or not the network is protected,
it needs an update in that area, as well as an update
to make use of the WEP key passed to auth() for shared
key authentication.

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

nl80211: introduce new key attributes

We will soon want to nest key attributes into
some new attribute for configuring static WEP
keys at connect() and ibss_join() time, so we
need nested attributes for that. However, key
attributes right now are 'global'. This patch
thus introduces new nested attributes for the
key settings and functions for parsing them.

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

mac80211: Assign next hop address to pending mesh frames

Assign next hop address to pending mesh frames once the path is resolved.

Regression.  Frames transmitted when a mesh path was wating to be resolved were
being transmitted with an invalid Receiver Address.

[Changes since v1]

Suggested by Johannes:
 - Improved frame_queue traversal
 - Narower RCU scope

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

cfg80211: fix two buglets

This fixes two small bugs:
 1) the connect variable is already initialised, and the
    assignment to auth_type overwrites the previous setting
    with a wrong value
 2) when all authentication attempts fail, we need to report
    that we couldn't connect

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

cfg80211: fix race in giwrate

cfg80211_wext_giwrate doesn't lock the wdev, so it
cannot access current_bss race-free. Also, there's
little point in trying to ask the driver for an AP
that it never told us about, so avoid that case.

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

p54: re-enable power save feature

This patch re-enables p54's power save features and adds a workaround
which temporarily alters the device's power state in order to allow
ps-polls to be sent and buffered data to be retrieved during psm.

(Incorporates patch originally posted as "p54: fix beacon template dtim
IE corruption". -- JWL)

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

mac80211: driver operation debugging

This makes mac80211 use the event tracing framework
to log all operations as given to the driver. This
will need to be extended with more information, but
as a start it should be good.

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

mac80211: fix sparse warning

ieee80211_testmode_cmd can very well be static.

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

Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:
drivers/net/wireless/iwmc3200wifi/netdev.c
net/wireless/scan.c

Fix typos in comments in via-velocity header.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove unnecessary forward declarations from velocity NIC driver.

By moving functions to before their first call, we eliminate
the need to define forward references.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix up CodingStyle problems in via-velocity.c

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove unused zero-copy code from velocity NIC driver.

This code hasn't been enabled in forever.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

TCP: Add comments to (near) all functions in tcp_output.c v3

While looking for something else I spent some time adding
one liner comments to the tcp_output.c functions that
didn't have any. That makes the comments more consistent.

I hope I documented everything right.

No code changes.

v2: Incorporated feedback from Ilpo.
v3: Change style of one liner comments, add a few more comments.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

af_packet: style cleanups

Some style cleanups to match current code practices.

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

net: move macsonic's probe function to .devinit.text

A pointer to mac_sonic_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

Various other functions that are called by mac_sonic_probe need to move
to .devinit.text, too.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Tested-by: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: move xtsonic's probe function to .devinit.text

A pointer to xtsonic_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

net: move sb1250-mac's probe function to .devinit.text

A pointer to sbmac_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Weiwei Wang <weiwei.wang@windriver.com>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

net: move meth's probe function to .devinit.text

A pointer to meth_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Jeff Garzik <jgarzik@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: move jazzsonic's probe function to .devinit.text

A pointer to jazz_sonic_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

As noticed by Geert Uytterhoeven sonic_probe1 is called by
jazz_sonic_probe, so the former has to move to .devinit.text, too.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: move sgiseeq's probe function to .devinit.text

A pointer to sgiseeq_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Wang Chen <wangchen@cn.fujitsu.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

veth: Zero timestamp in xmit path.

This patch zero's the timestamp before handing the packet to
the peer interface.  This lets the peer recalculate the rx timestamp
if it cares about timestamps.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

can: sja1000: Add support for the new 4 channel EMS CPC-PCI cards

This patch adds support to the ems_pci driver for the new, v2,
4 channel CPC-PCI/PCIe/104P CAN cards from EMS Dr. Thomas Wuensche.

Signed-off-by: Sebastian Haas <haas@ems-wuensche.com>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

dm9000: switch to dev_pm_ops

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

be2net: Add GRO support to the be2net driver. LRO is not supported anymore.

This patch removes support for INET_LRO and switches over to GRO.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Phonet: dropped datagrams accounting

The per-socket drop count is visible via /proc/net/phonet.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Phonet: account for dropped RX packets

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>