This patch renames all mac80211 files (except ieee80211_i.h) to get rid
of the useless ieee80211_ prefix.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Up to now, key manipulation is supposed to run under RTNL to
avoid concurrent manipulations and also allow the set_key()
hardware callback to sleep. This is not feasible because STA
structs are rcu-protected and thus a lot of operations there
cannot take the RTNL. Also, key references are rcu-protected
so we cannot do things atomically.
This patch changes key locking completely:
* key operations are now atomic
* hardware crypto offload is enabled and disabled from
a workqueue, due to that key freeing is also delayed
* debugfs code is also run from a workqueue
* keys reference STAs (and vice versa!) so during STA
unlink the STAs key reference is removed but not the
keys STA reference, to avoid races key todo work is
run before STA destruction.
* fewer STA operations now need the RTNL which was
required due to key operations
This fixes the locking problems lockdep pointed out and also
makes things more light-weight because the rtnl isn't required
as much.
Note that the key todo lock/key mutex are global locks, this
is not required, of course, they could be per-hardware instead.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When a STA is supposed to be unlinked but is pinned, it still needs
to be unlinked from all structures. Only at the end of the unlink
process should we check for pin status and invalidate the callers
reference if it is pinned. Move the pin status check down.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
These two symbols are used only in ifdeffed function. Move them to that
section too.
net/mac80211/sta_info.c:387: warning: `__sta_info_pin' defined but not used
net/mac80211/sta_info.c:397: warning: `__sta_info_unpin' defined but not used
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Michael Wu <flamingice@sourmilk.net>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch contains next issues:
1 - prevents "stop BA session" multiple warnings
2 - adds debug print to stop Rx BA session flow
3 - adds EOL in one debug print
Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We must use the b43_is_mode() call to check the current interface
operation mode.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This fixes the initialization of the PHY TX control words in
shared memory. These control words are used for management frames
like beacons.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This fixes beacon updating in the bottomhalf.
In case the device is busy, we will defer to later in the IRQ handler.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The ieee80211_ioctl_giwrate() ioctl handler doesn't rcu_read_lock()
its access to the sta table, fix it.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Unfortunately, debugfs can be made to access invalid memory by
open()ing a file and then waiting until the corresponding debugfs
file has been removed (and, probably, the underlying object.)
That could be exploited by any user if the user is able to open
debugfs files and can cause networking devices, STA entries or
similar to disappear which is quite easy to do.
Hence, all debugfs files should be root-only.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
These are some beaconing related fixes. Basically it prevents
the card from triggering the beacon IRQ over and over again.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When doing firmware-assisted scanning, iwlwifi drivers do not
honour the regulatory control code that might disable channels
that are enabled in the EEPROM, for example when the user is
visiting another country and adjusted the regulatory domain
accordingly. This patch fixes that.
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>
When drivers receive change notification they may do work that
will enable the changes to take effect. For example, if new association
the device needs to be programmed with this information.
Give the driver chance to make the changes before notifying the
upper layer - thus preventing race condition where upper layer
attempts to utilize state that may not be configured yet.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Do not free reference to device twice. After rfkill registration succeeds
we only need to call rfkill_unregister() and not rfkill_free().
Also add some debugging.
Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
After the workqueue is notified the LED code may be accessed. Ensure
that LED registration completes completely as part of initialization
before anything waiting on this is notified.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Now rt2x00lib handles the initial configure_filter() command, we can
directly call lib->config_filter() in scheduled context since the
called function will no longer check if anything has changed (which is
now handled in rt2x00lib as well).
This fixes a endless loop with USB drivers where the config_filter
command was scheduled time and time again without sending any command
to the device.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This fixes some timings for pre-TBTT and synthetic PU.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Christian Lamparter
Johannes Berg
Jiri Slaby
Pavel Machek
Ron Rindjunsky
Michael Buesch
Mohamed Abbas
Reinette Chatre
Tomas Winkler
Ivo van Doorn
John W. Linville