linux.git/drivers/net/wireless/rt2x00/rt2x00dev.c, branch v2.6.32

rt2x00: Don't queue ieee80211 work after USB removal

2009-11-06T20:14:02+00:00

This prevents the rt2x00 driver from queueing ieee80211 work after the  
USB card has been removed, preventing a kernel panic.

Signed-off-by: Sean Cross 
Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Reorganize padding & L2 padding

2009-08-31T18:42:14+00:00

The old function rt2x00queue_payload_align() handled
both adding and removing L2 padding and some basic
frame alignment. The entire function was being abused
because it had multiple functions and the header length
argument was somtimes used to align the header instead
of the payload.

Additionally there was a bug when inserting L2 padding
that only the payload was aligned but not the header. This
happens when the header wasn't aligned properly by mac80211,
but rt2x00lib only moves the payload.

A secondary problem was that when removing L2 padding during
TXdone or RX the skb wasn't resized to the proper size.

Split the function into seperate functions each handling
its task as it should.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Fix TX status reporting

2009-08-31T18:42:14+00:00

Not all values of the TX status enumeration were
covered during updating of the TX statistics. This
could lead to wrong bitrate tuning but also wrong
behavior in tools like hostapd.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: bss_info_changed() callback is allowed to sleep

2009-08-20T15:36:05+00:00

The bss_info_changed() callback function no longer needs
to be atomic. Remove the scheduled work structure and
call into the driver directly.

Additionaly this makes the DRIVER_REQUIRE_SCHEDULED
flag redundant so it can be removed.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: configure_filter() callback is allowed to sleep

2009-08-20T15:36:05+00:00

The configure_filter() callback function no longer needs
to be atomic. Remove the scheduled work structure and
call into the driver configure_filter() directly.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Add support for retry rates

2009-08-20T15:36:02+00:00

rt2800pci can handle different retry rates,
it will always step 1 rate down after a failed
transmission so creating the retry rate list
for mac80211 is quite simple.

Signed-off-by: Benoit PAPILLAULT 
Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Fix for race condition while update beacon

2009-08-14T13:13:53+00:00

The patch "Implement set_tim callback for all drivers" can cause kernel
oops in rt73usb_write_beacon. The oops is caused by one of the following
race conditions:
* In case of two near calls to set_tim: rt2x00lib_beacondone_iter is
cleaning the beacon skb, whereas rt73usb_write_beacon is still using it.
* In case of two near updates of beacon: first as the result of set_tim
and second as the result of a call from an application (e.g. hostapd).
This patch fixes the race condition by rearranging the update logic and
guarding rt2x00_intf->beacon->skb with a mutex.

Signed-off-by: Igor Perminov 
Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Remove usage of deprecated radio_enabled & IEEE80211_CONF_CHANGE_RADIO_ENABLED

2009-08-14T13:13:51+00:00

In the config() callback function the fields radio_enabled and
the change flag IEEE80211_CONF_CHANGE_RADIO_ENABLED have been
deprecated. This removes the usage of those fields by improving
antenna change detection in the antenna configuration function.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: cancel all work on disconnect

2009-08-04T20:44:24+00:00

Signed-off-by: Pavel Roskin 
Signed-off-by: John W. Linville

mac80211: redefine usage of the mac80211 workqueue

2009-08-04T20:44:14+00:00

The mac80211 workqueue exists to enable mac80211 and drivers
to queue their own work on a single threaded workqueue. mac80211
takes care to flush the workqueue during suspend but we never
really had requirements on drivers for how they should use
the workqueue in consideration for suspend.

We extend mac80211 to document how the mac80211 workqueue should
be used, how it should not be used and finally move raw access to
the workqueue to mac80211 only. Drivers and mac80211 use helpers
to queue work onto the mac80211 workqueue:

  * ieee80211_queue_work()
  * ieee80211_queue_delayed_work()

These helpers will now warn if mac80211 already completed its
suspend cycle and someone is trying to queue work. mac80211
flushes the mac80211 workqueue prior to suspend a few times,
but we haven't taken the care to ensure drivers won't add more
work after suspend. To help with this we add a warning when
someone tries to add work and mac80211 already completed the
suspend cycle.

Drivers should ensure they cancel any work or delayed work
in the mac80211 stop() callback.

Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville