Also, random indentation and whitespace cleanup.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

Start removing the internal node list in ath9k, in preparation
for using mac80211's STA list.
Remove lists, locks, routines, flags, functions managing nodes in ath9k.
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The HT handling has the following deficiencies, which I've
(partially) fixed:
 * it always uses the AP info even if there is no AP,
   hence has no chance of working as an AP
 * it pretends to be HW config, but really is per-BSS
 * channel sanity checking is left to the drivers
 * it generally lets the driver control too much

HT enabling is still wrong with this patch if you have more than
one virtual STA mode interface, but that never happens currently.
Once WDS, IBSS or AP/VLAN gets HT capabilities, it will also be
wrong, see the comment in ieee80211_enable_ht().

Additionally, this fixes a number of bugs:
 * mac80211: ieee80211_set_disassoc doesn't notify the driver any
             more since the refactoring
 * iwl-agn-rs: always uses the HT capabilities from the wrong stuff
               mac80211 gives it rather than the actual peer STA
 * ath9k: a number of bugs resulting from the broken HT API

I'm not entirely happy with putting the HT capabilities into
struct ieee80211_sta as restricted to our own HT TX capabilities,
but I see no cleaner solution for now.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch cleans up a number of things:
 * the unusable definition of the HT capabilities/HT information
   information elements
 * variable names that are hard to understand
 * mac80211: move ieee80211_handle_ht to ht.c and remove the unused
             enable_ht parameter
 * mac80211: fix bug with MCS rate 32 in ieee80211_handle_ht
 * mac80211: fix bug with casting the result of ieee80211_bss_get_ie
             to an information element _contents_ rather than the
             whole element, add size checking (another out-of-bounds
             access bug fixed!)
 * mac80211: remove some unused return values in favour of BUG_ON
             checking
 * a few minor other things
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This enables Adaptive Noise Immunity (ANI) on ath9k.
ANI is as algorithm designed to minimize the detrimental
effects of time-varying interferences. This should
help with throughput in noisy environments. To use
ANI we re-enable the MIB interrupt. Since ANI works
on a timer and updates the noise floor we take
advantage of this and also report a non-static noise
floor now to mac80211.
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJouni Malinen <Jouni.Malinen@Atheros.com>
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Part of the cleanup on ath9k -- this was also causing some
annoying compile time warnings.
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch addresses an issue with the locking order. ath_rx_flush_tid()
uses spin_lock/unlock_bh when IRQs are disabled in sta_notify by mac80211.

As node clean up is still pending with ath9k and this problematic portion
of the code is expected to change anyway, thinking of a proper fix may not
be worthwhile. So having this interim fix helps the users to get rid of the
kernel warning message.

Pasted the kernel warning message for reference.

kernel: ath0: No ProbeResp from current AP 00:1b:11:60:7a:3d - assume out of range
kernel: ------------[ cut here ]------------
kernel: WARNING: at kernel/softirq.c:136 local_bh_enable+0x3c/0xab()
kernel: Pid: 1029, comm: ath9k Not tainted 2.6.27-rc4-wt-w1fi-wl
kernel:
kernel: Call Trace:
kernel:  [<ffffffff802278d8>] warn_on_slowpath+0x51/0x77
kernel:  [<ffffffff80224c51>] check_preempt_wakeup+0xf3/0x123
kernel:  [<ffffffff80239658>] autoremove_wake_function+0x9/0x2e
kernel:  [<ffffffff8022c281>] local_bh_enable+0x3c/0xab
kernel:  [<ffffffffa01ab75a>] ath_rx_node_cleanup+0x38/0x6e [ath9k]
kernel:  [<ffffffffa01b2280>] ath_node_detach+0x3b/0xb6 [ath9k]
kernel:  [<ffffffffa01ab09f>] ath9k_sta_notify+0x12b/0x165 [ath9k]
kernel:  [<ffffffff802366cf>] queue_work+0x1d/0x49
kernel:  [<ffffffffa018c3fc>] add_todo+0x70/0x99 [mac80211]
kernel:  [<ffffffffa017de76>] __sta_info_unlink+0x16b/0x19e [mac80211]
kernel:  [<ffffffffa017e6ed>] sta_info_unlink+0x18/0x43 [mac80211]
kernel:  [<ffffffffa0182732>] ieee80211_associated+0xaa/0x16d [mac80211]
kernel:  [<ffffffffa0184a1a>] ieee80211_sta_work+0x4fb/0x6b4 [mac80211]
kernel:  [<ffffffff80469c58>] thread_return+0x30/0xa9
kernel:  [<ffffffffa018451f>] ieee80211_sta_work+0x0/0x6b4 [mac80211]
kernel:  [<ffffffff802362c2>] run_workqueue+0xb1/0x17a
kernel:  [<ffffffff80236be9>] worker_thread+0xd0/0xdb
kernel:  [<ffffffff8023964f>] autoremove_wake_function+0x0/0x2e
kernel:  [<ffffffff80236b19>] worker_thread+0x0/0xdb
kernel:  [<ffffffff8023954a>] kthread+0x47/0x75
kernel:  [<ffffffff80223121>] schedule_tail+0x18/0x50
kernel:  [<ffffffff8020bc49>] child_rip+0xa/0x11
kernel:  [<ffffffff80239503>] kthread+0x0/0x75
kernel:  [<ffffffff8020bc3f>] child_rip+0x0/0x11
kernel:
kernel: ---[ end trace e9bb5da661055827 ]---
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Don't trim the FCS before passing the frame to mac80211,
move TSF_TO_TU to core.h and delete more unused macros.
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use direct pci functions instead.
Also, use sc_ht_info.tx_chan_width directly and remove ath_cwm_macmode.
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add sc_rxflush and sc_noreset as bitfields to sc_flags.
Remove a few variables and function prototypes that are unused.
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

ah_opmode and sc_opmode are redundant.
This patch removes sc_opmode.
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

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

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

This adds the new mac80211 11n ath9k Atheros driver. Only STA support
is currently enabled and tested.
Signed-off-by: NSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: NSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>