Since we no longer do a multi-pass scan,
keeping track of how long each pass took
is pointless since there will only be one.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

This logic is just confusing, if anything it
belongs into mac80211. Also, even if we do
scan during the EAPOL handshake, that will
not cause any problems, just a short delay.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

With atomic bitops, test_and_{set,clear}_bit
should be used instead of separate test_bit
and set_bit/clear_bit.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Since mac80211 will now never request scanning
multiple bands, we can remove all the associated
logic and scan a single band only in each scan.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Even the initial single/dual stream values will be overridden later when
issue link quality command; but still make sense not to use hard-code
value during initialization. Single/Dual stream mask are used to indicate the
best antenna for SISO/MIMO; different NIC has different tx antenna
configuration; so the parameter need to based on the valid tx antenna.

1x2 device: single tx antenna available, only SISO is valid
configuration, but still need to set up MIMO configuration, so set it up
with antenna A & B as default.
2x2 device: two tx antenna available, dual_stream will use both valid
antenna.

3x3 device: three tx antenna available, skip the first antenna and
choice the second and third antenna for dual_stream.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Conflicts:
	drivers/net/wireless/iwlwifi/iwl-6000.c

For 6000 series, the 2.4G HT40 band regulatory settings address in EEPROM
was off by 2.

Before the fix, you'll see this in dmesg:
[79535.788877] ieee80211 phy8: U iwl_mod_ht40_chan_info HT40 Ch. 7 [2.4GHz]
WIDE (0x61 0dBm): Ad-Hoc not supported
[79535.788880] ieee80211 phy8: U iwl_mod_ht40_chan_info HT40 Ch. 11 [2.4GHz]
WIDE (0x61 0dBm): Ad-Hoc not supported

And after the fix:
[91132.688706] ieee80211 phy14: U iwl_mod_ht40_chan_info HT40 Ch. 7 [2.4GHz]
IBSS ACTIVE WIDE (0x6f 0dBm): Ad-Hoc supported
[91132.688709] ieee80211 phy14: U iwl_mod_ht40_chan_info HT40 Ch. 11 [2.4GHz]
IBSS ACTIVE WIDE (0x6f 0dBm): Ad-Hoc supported
Signed-off-by: NShanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

When an internal scan is started, nothing protects the
is_internal_short_scan variable which can cause crashes,
cf. https://bugzilla.kernel.org/show_bug.cgi?id=15667.
Fix this by making the short scan request use the mutex
for locking, which requires making the request go to a
work struct so that it can sleep.
Reported-by: NPeter Zijlstra <peterz@infradead.org>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

A very useful information was provided by Sitecom R&D guys:

Please find the information regarding our latest Ralink adapters below;

WL-302    -    VID: 0x0DF6,    PID: 0x002D    -    Ralink RT2771
WL-315    -    VID: 0x0DF6,    PID: 0x0039    -    Ralink RT2770
WL-319    -    VID: 0x182D,    PID: 0x0037    -    Ralink RT2860
WL-321    -    VID: 0x0DF6,    PID: 0x003B    -    Ralink RT2770
WL-324    -    VID: 0x0DF6,    PID: 0x003D    -    Ralink RT2870
WL-329    -    VID: 0x0DF6,    PID: 0x0041    -    Ralink RT3572
WL-343    -    VID: 0x0DF6,    PID: 0x003E    -    Ralink RT3070
WL-344    -    VID: 0x0DF6,    PID: 0x0040    -    Ralink RT3071
WL-345    -    VID: 0x0DF6,    PID: 0x0042    -    Ralink RT3072
WL-608    -    VID: 0x0DF6,    PID: 0x003F    -    Ralink RT2070

Note:
PID: 0x003C, 0x004A, and 0x004D:   --these products do not exist; devices were never produced/shipped--

The WL-349v4 USB dongle (0x0df6,0x0050) will be shipped soon (it isn't available yet), and uses a Ralink RT3370 chipset.
Signed-off-by: NXose Vazquez Perez <xose.vazquez@gmail.com>
Acked-by: NGertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch adds the following 5 entries to the usbid device table:

 * Netgear WNA1000
 * Proxim ORiNOCO Dual Band 802.11n USB Adapter
 * 3Com Dual Band 802.11n USB Adapter
 * H3C Dual Band 802.11n USB Adapter
 * WNC Generic 11n USB dongle

CC: <stable@kernel.org>
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

If EEPROM is used, NVS data is now loaded but ignored.
Stop loading it to avoid need of dummy NVS file for modules with EEPROM.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NKalle Valo <kvalo@adurom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch fixes two warnings below after unplugging ar9271 usb device:
	-one is a kernel warning[1]
	-another is a lockdep warning[2]

The root reason is that __skb_queue_purge can't be executed in hardirq
context, so the patch forks ath9k_skb_queue_purge(ath9k version of _skb_queue_purge),
which frees skb with dev_kfree_skb_any which can be run in hardirq
context safely, then prevent the lockdep warning and kernel warning after
unplugging ar9271 usb device.

[1] kernel warning
[  602.894005] ------------[ cut here ]------------
[  602.894005] WARNING: at net/core/skbuff.c:398 skb_release_head_state+0x71/0x87()
[  602.894005] Hardware name: 6475EK2
[  602.894005] Modules linked in: ath9k_htc ath9k ath9k_common ath9k_hw ath bridge stp llc sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table kvm_intel kvm arc4 ecb mac80211 snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep thinkpad_acpi snd_pcm snd_timer hwmon iTCO_wdt snd e1000e pcspkr i2c_i801 usbhid iTCO_vendor_support wmi cfg80211 yenta_socket rsrc_nonstatic pata_acpi snd_page_alloc soundcore uhci_hcd ohci_hcd ehci_hcd usbcore i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: ath]
[  602.894005] Pid: 2506, comm: ping Tainted: G        W  2.6.34-rc3-wl #20
[  602.894005] Call Trace:
[  602.894005]  <IRQ>  [<ffffffff8104a41c>] warn_slowpath_common+0x7c/0x94
[  602.894005]  [<ffffffffa022f398>] ? __skb_queue_purge+0x43/0x4a [ath9k_htc]
[  602.894005]  [<ffffffff8104a448>] warn_slowpath_null+0x14/0x16
[  602.894005]  [<ffffffff813269c1>] skb_release_head_state+0x71/0x87
[  602.894005]  [<ffffffff8132829a>] __kfree_skb+0x16/0x81
[  602.894005]  [<ffffffff813283b2>] kfree_skb+0x7e/0x86
[  602.894005]  [<ffffffffa022f398>] __skb_queue_purge+0x43/0x4a [ath9k_htc]
[  602.894005]  [<ffffffffa022f560>] __hif_usb_tx+0x1c1/0x21b [ath9k_htc]
[  602.894005]  [<ffffffffa022f73c>] hif_usb_tx_cb+0x12f/0x154 [ath9k_htc]
[  602.894005]  [<ffffffffa00d2fbe>] usb_hcd_giveback_urb+0x91/0xc5 [usbcore]
[  602.894005]  [<ffffffffa00f6c34>] ehci_urb_done+0x7a/0x8b [ehci_hcd]
[  602.894005]  [<ffffffffa00f6f33>] qh_completions+0x2ee/0x376 [ehci_hcd]
[  602.894005]  [<ffffffffa00f8ba5>] ehci_work+0x95/0x76e [ehci_hcd]
[  602.894005]  [<ffffffffa00fa5ae>] ? ehci_irq+0x2f/0x1d4 [ehci_hcd]
[  602.894005]  [<ffffffffa00fa725>] ehci_irq+0x1a6/0x1d4 [ehci_hcd]
[  602.894005]  [<ffffffff810a6d18>] ? __rcu_process_callbacks+0x7a/0x2df
[  602.894005]  [<ffffffff810a47a4>] ? handle_fasteoi_irq+0x22/0xd2
[  602.894005]  [<ffffffffa00d268d>] usb_hcd_irq+0x4a/0xa7 [usbcore]
[  602.894005]  [<ffffffff810a2853>] handle_IRQ_event+0x77/0x14f
[  602.894005]  [<ffffffff813285ce>] ? skb_release_data+0xc9/0xce
[  602.894005]  [<ffffffff810a4814>] handle_fasteoi_irq+0x92/0xd2
[  602.894005]  [<ffffffff8100c4fb>] handle_irq+0x88/0x91
[  602.894005]  [<ffffffff8100baed>] do_IRQ+0x63/0xc9
[  602.894005]  [<ffffffff81354245>] ? ip_flush_pending_frames+0x4d/0x5c
[  602.894005]  [<ffffffff813ba993>] ret_from_intr+0x0/0x16
[  602.894005]  <EOI>  [<ffffffff811095fe>] ? __delete_object+0x5a/0xb1
[  602.894005]  [<ffffffff813ba5f5>] ? _raw_write_unlock_irqrestore+0x47/0x7e
[  602.894005]  [<ffffffff813ba5fa>] ? _raw_write_unlock_irqrestore+0x4c/0x7e
[  602.894005]  [<ffffffff811095fe>] __delete_object+0x5a/0xb1
[  602.894005]  [<ffffffff81109814>] delete_object_full+0x25/0x31
[  602.894005]  [<ffffffff813a60c0>] kmemleak_free+0x26/0x45
[  602.894005]  [<ffffffff810ff517>] kfree+0xaa/0x149
[  602.894005]  [<ffffffff81323fb7>] ? sock_def_write_space+0x84/0x89
[  602.894005]  [<ffffffff81354245>] ? ip_flush_pending_frames+0x4d/0x5c
[  602.894005]  [<ffffffff813285ce>] skb_release_data+0xc9/0xce
[  602.894005]  [<ffffffff813282a2>] __kfree_skb+0x1e/0x81
[  602.894005]  [<ffffffff813283b2>] kfree_skb+0x7e/0x86
[  602.894005]  [<ffffffff81354245>] ip_flush_pending_frames+0x4d/0x5c
[  602.894005]  [<ffffffff81370c1f>] raw_sendmsg+0x653/0x709
[  602.894005]  [<ffffffff81379e31>] inet_sendmsg+0x54/0x5d
[  602.894005]  [<ffffffff813207a2>] ? sock_recvmsg+0xc6/0xdf
[  602.894005]  [<ffffffff813208c1>] sock_sendmsg+0xc0/0xd9
[  602.894005]  [<ffffffff810e13b4>] ? might_fault+0x68/0xb8
[  602.894005]  [<ffffffff810e13fd>] ? might_fault+0xb1/0xb8
[  602.894005]  [<ffffffff8132a1c3>] ? copy_from_user+0x2f/0x31
[  602.894005]  [<ffffffff8132a5b3>] ? verify_iovec+0x54/0x91
[  602.894005]  [<ffffffff81320d41>] sys_sendmsg+0x1da/0x241
[  602.894005]  [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9
[  602.894005]  [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9
[  602.894005]  [<ffffffff8107642e>] ? trace_hardirqs_on_caller+0x16/0x150
[  602.894005]  [<ffffffff813ba27d>] ? _raw_spin_unlock_irq+0x56/0x63
[  602.894005]  [<ffffffff8103d3cb>] ? finish_task_switch+0xa4/0xc9
[  602.894005]  [<ffffffff8103d327>] ? finish_task_switch+0x0/0xc9
[  602.894005]  [<ffffffff810357fe>] ? need_resched+0x23/0x2d
[  602.894005]  [<ffffffff8107642e>] ? trace_hardirqs_on_caller+0x16/0x150
[  602.894005]  [<ffffffff813b9750>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[  602.894005]  [<ffffffff81009c02>] system_call_fastpath+0x16/0x1b
[  602.894005] ---[ end trace 91ba2d8dc7826839 ]---

[2] lockdep warning
[  169.363215] ======================================================
[  169.365390] [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
[  169.366334] 2.6.34-rc3-wl #20
[  169.366872] ------------------------------------------------------
[  169.366872] khubd/78 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[  169.366872]  (clock-AF_INET){++.?..}, at: [<ffffffff81323f51>] sock_def_write_space+0x1e/0x89
[  169.366872]
[  169.366872] and this task is already holding:
[  169.366872]  (&(&hif_dev->tx.tx_lock)->rlock){-.-...}, at: [<ffffffffa03715b0>] hif_usb_stop+0x24/0x53 [ath9k_htc]
[  169.366872] which would create a new lock dependency:
[  169.366872]  (&(&hif_dev->tx.tx_lock)->rlock){-.-...} -> (clock-AF_INET){++.?..}
[  169.366872]
[  169.366872] but this new dependency connects a HARDIRQ-irq-safe lock:
[  169.366872]  (&(&hif_dev->tx.tx_lock)->rlock){-.-...}
[  169.366872] ... which became HARDIRQ-irq-safe at:
[  169.366872]   [<ffffffff810772d5>] __lock_acquire+0x2c6/0xd2b
[  169.366872]   [<ffffffff8107866d>] lock_acquire+0xec/0x119
[  169.366872]   [<ffffffff813b99bb>] _raw_spin_lock+0x40/0x73
[  169.366872]   [<ffffffffa037163d>] hif_usb_tx_cb+0x5e/0x154 [ath9k_htc]
[  169.366872]   [<ffffffffa00d2fbe>] usb_hcd_giveback_urb+0x91/0xc5 [usbcore]
[  169.366872]   [<ffffffffa00f6c34>] ehci_urb_done+0x7a/0x8b [ehci_hcd]
[  169.366872]   [<ffffffffa00f6f33>] qh_completions+0x2ee/0x376 [ehci_hcd]
[  169.366872]   [<ffffffffa00f8ba5>] ehci_work+0x95/0x76e [ehci_hcd]
[  169.366872]   [<ffffffffa00fa725>] ehci_irq+0x1a6/0x1d4 [ehci_hcd]
[  169.366872]   [<ffffffffa00d268d>] usb_hcd_irq+0x4a/0xa7 [usbcore]
[  169.366872]   [<ffffffff810a2853>] handle_IRQ_event+0x77/0x14f
[  169.366872]   [<ffffffff810a4814>] handle_fasteoi_irq+0x92/0xd2
[  169.366872]   [<ffffffff8100c4fb>] handle_irq+0x88/0x91
[  169.366872]   [<ffffffff8100baed>] do_IRQ+0x63/0xc9
[  169.366872]   [<ffffffff813ba993>] ret_from_intr+0x0/0x16
[  169.366872]   [<ffffffff8130f6ee>] cpuidle_idle_call+0xa7/0x115
[  169.366872]   [<ffffffff81008c4f>] cpu_idle+0x68/0xc4
[  169.366872]   [<ffffffff813a41e0>] rest_init+0x104/0x10b
[  169.366872]   [<ffffffff81899db3>] start_kernel+0x3f1/0x3fc
[  169.366872]   [<ffffffff818992c8>] x86_64_start_reservations+0xb3/0xb7
[  169.366872]   [<ffffffff818993c4>] x86_64_start_kernel+0xf8/0x107
[  169.366872]
[  169.366872] to a HARDIRQ-irq-unsafe lock:
[  169.366872]  (clock-AF_INET){++.?..}
[  169.366872] ... which became HARDIRQ-irq-unsafe at:
[  169.366872] ...  [<ffffffff81077349>] __lock_acquire+0x33a/0xd2b
[  169.366872]   [<ffffffff8107866d>] lock_acquire+0xec/0x119
[  169.366872]   [<ffffffff813b9d07>] _raw_write_lock_bh+0x45/0x7a
[  169.366872]   [<ffffffff8135cf14>] tcp_close+0x165/0x34d
[  169.366872]   [<ffffffff8137aced>] inet_release+0x55/0x5c
[  169.366872]   [<ffffffff81321350>] sock_release+0x1f/0x6e
[  169.366872]   [<ffffffff813213c6>] sock_close+0x27/0x2b
[  169.366872]   [<ffffffff8110dd45>] __fput+0x125/0x1ca
[  169.366872]   [<ffffffff8110de04>] fput+0x1a/0x1c
[  169.366872]   [<ffffffff8110adc9>] filp_close+0x68/0x72
[  169.366872]   [<ffffffff8110ae80>] sys_close+0xad/0xe7
[  169.366872]   [<ffffffff81009c02>] system_call_fastpath+0x16/0x1b

(Trimmed at the "other info that might help us debug this" line in
the interest of brevity... -- JWL)
Signed-off-by: NMing Lei <tom.leiming@gmail.com>
Acked-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In ath9k-htc register out path, ath9k-htc will pass skb->data into
usb hcd and usb hcd will do dma mapping and unmapping to the buffer
pointed by skb->data, so we should pass a cache-line aligned address.

This patch replace __dev_alloc_skb with alloc_skb to make skb->data
pointed to a cacheline aligned address simply since ath9k-htc does not
skb_push on the skb and pass it to mac80211, also use kfree_skb to free
the skb allocated by alloc_skb(we can use kfree_skb safely in hardirq
context since skb->destructor is NULL always in the path).
Signed-off-by: NSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: NMing Lei <tom.leiming@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In ath9k-htc register in path, ath9k-htc will pass skb->data into
usb hcd and usb hcd will do dma mapping and unmapping to the buffer
pointed by skb->data, so we should pass a cache-line aligned address.

This patch replace __dev_alloc_skb with alloc_skb to make skb->data
pointed to a cacheline aligned address simply since ath9k-htc does not
skb_push on the skb and pass it to mac80211, also use kfree_skb to free
the skb allocated by alloc_skb(we can use kfree_skb safely in hardirq
context since skb->destructor is NULL always in the path).
Signed-off-by: NMing Lei <tom.leiming@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In ath9k_hif_usb_alloc_rx_urbs, ath9k-htc will pass skb->data into
usb hcd and usb hcd will do dma mapping and unmapping to the buffer
pointed by skb->data, so we should pass a cache-line aligned address.

This patch replace __dev_alloc_skb with alloc_skb to make skb->data
pointed to a cacheline aligned address simply since ath9k-htc does not
skb_push on the skb and pass it to mac80211, also use kfree_skb to free
the skbs allocated by alloc_skb(we can use kfree_skb safely in hardirq
context since skb->destructor is NULL always in the path).
Signed-off-by: NMing Lei <tom.leiming@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We get RXORN interrupts when all receive buffers are full. This is not
necessarily a fatal situation. It can also happen when the bus is busy or the
CPU is not fast enough to process all frames.

Older chipsets apparently need a reset to come out of this situration, but on
newer chips we can treat RXORN like RX, as going thru a full reset does more
harm than good, there.

The exact chip revisions which need a reset are unknown - this guess
AR5K_SREV_AR5212 ("venice") is copied from the HAL.

Inspired by openwrt 413-rxorn.patch:
"treat rxorn like rx, reset after rxorn seems to do more harm than good"
Signed-off-by: NBruno Randolf <br1@einfach.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There was a confusion in the usage of the bits AR5K_STA_ID1_ACKCTS_6MB and
AR5K_STA_ID1_BASE_RATE_11B. If they are set (1), we will get lower bitrates for
ACK and CTS. Therefore ath5k_hw_set_ack_bitrate_high(ah, false) actually
resulted in high bitrates, which i think is what we want anyways. Cleared the
confusion and added some documentation.
Signed-off-by: NBruno Randolf <br1@einfach.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add RT3390 specific register initializations to rt2x00, based on the latest
Ralink rt3390 vendor driver.

Untested as I don't actually own an RT3390 based device, but given experiences
on rt3070/rt3071 very hopeful that this will actually work..
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add RT3090 specific register initializations to rt2x00, based on the latest
Ralink rt3090 vendor driver.

Untested as I don't actually own an RT3090 based device, but given experiences
on rt3070/rt3071 very hopeful that this will actually work..
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add RT3071 specific register initializations to rt2x00, based on the latest
Ralink rt3070 vendor driver.

With this patch my RT3071 based devices start showing a sign of life.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

rt2x00 had preliminary support for RT3070 based devices, but the support was
incomplete.
Update the RT3070 register initialization to be similar to the latest Ralink
vendor driver.

With this patch my rt3070 based devices start showing a sign of life.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Align the rt2800 register initializations with the latest versions of the
Ralink vendor driver.
This patch is also preparation for the addition of support for RT3070 /
RT3071 / RT3090 / RT3390 based devices.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The rt2800 version constants are inconsistent, and the version number don't
mean a lot of things anyway. Refactor the constants to have some more
meaningful names, and introduce and use some new helpers to check these
chipset revisions. At the same time rename to revision, as they are more
revision numbers rather than version numbers.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Only include definitions for RT chipsets that are also used inside the
Ralink vendor drivers.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Definitions taken from the latest rt2860 / rt2870 / rt3070 / rt3090 Ralink
vendor drivers.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It seems that the distinction between RF channel switch method is solely based
on the RF chipset that is used.
Refactor the channel switch decision to just take the RF chipset into account,
thereby greatly simplifying the check.
Signed-off-by: NGertjan van Wingerde <gwingerde@gmail.com>
Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch fixes an old problem, which - under certain
circumstances - could cause the device to become
unresponsive.

most of p54pci's rx-ring management is implemented in just
two distinct standalone functions. p54p_check_rx_ring takes
care of processing incoming data, while p54p_refill_rx_ring
tries to replenish all depleted communication buffers.

This has always worked fine on my fast machine, but
now I know there is a hidden race...

The most likely candidate here is ring_control->device_idx.
Quintin Pitts had already analyzed the culprit and posted
a patch back in Oct 2009. But sadly, no one's picked up on this.
( https://patchwork.kernel.org/patch/53079/ [2 & 3] ).
This patch does the same way, except that it also prioritize
rx data processing, simply because tx routines *can* wait.
Reported-by: NSean Young <sean@mess.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=11386Reported-by: NQuintin Pitts <geek4linux@gmail.com>
Signed-off-by: NQuintin Pitts <geek4linux@gmail.com>
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

We used to free all the Tx queues memory when interface is brought
down and reallocate them again in interface up. This requires
order-4 allocation for txq->cmd[]. In situations like s2ram, this
usually leads to allocation failure in the memory subsystem. The
patch fixed this problem by allocating the Tx queues memory only at
the first time. Later iwl_down/iwl_up only initialize but don't
free and reallocate them. The memory is freed at the device removal
time. BTW, we have already done this for the Rx queue.

This fixed bug https://bugzilla.kernel.org/show_bug.cgi?id=15551Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Acked-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Check return code on iwl_send_cmd_pdu() to get rid of compiler warning.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Fixes:
CC [M]  drivers/net/wireless/iwlwifi/iwl-agn-rs.o
drivers/net/wireless/iwlwifi/iwl-agn-rs.c: In function ‘rs_get_rate’:
drivers/net/wireless/iwlwifi/iwl-agn-rs.c:2419: warning: unused variable ‘priv’
CC [M]  drivers/net/wireless/iwlwifi/iwl-sta.o
drivers/net/wireless/iwlwifi/iwl-sta.c: In function ‘iwl_send_add_sta’:
drivers/net/wireless/iwlwifi/iwl-sta.c:197: warning: unused variable ‘sta_id’

drivers/net/wireless/iwlwifi/iwl-3945.c: In function ‘iwl3945_rx_reply_rx’:
drivers/net/wireless/iwlwifi/iwl-3945.c:601: warning: unused variable ‘rx_stats_noise_diff’
drivers/net/wireless/iwlwifi/iwl-3945.c:600: warning: unused variable ‘rx_stats_sig_avg’
drivers/net/wireless/iwlwifi/iwl-3945-rs.c: In function ‘rs_get_rate’:
drivers/net/wireless/iwlwifi/iwl-3945-rs.c:650: warning: unused variable ‘priv’
Reported-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

REPLY_TX_LINK_QUALITY_CMD was used by 4965, 5000 series and up
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Update to include additional tx command response status for "_agn"
devices.

The following status indicate the transmission was postponed:
  TX_STATUS_POSTPONE_DELAY
  TX_STATUS_POSTPONE_FEW_BYTES
  TX_STATUS_POSTPONE_BT_PRIO
  TX_STATUS_POSTPONE_QUIET_PERIOD
  TX_STATUS_POSTPONE_CALC_TTAK
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

When sys assert happen, driver will dump the error table information
provided by uCode. There are more information available but is not being
display by the driver; adding program counter and last host command the
to log to help uCode debugging.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

The last_phy_res[100] variable is used in an odd
way. The first byte of it is used as a flag, and
the rest as the data. Thus, the array need only
be 61 bytes, since it is just the flag and a
struct iwl_rx_phy_res (which is 60 bytes).

Clean this up by splitting the variable into two:
last_phy_res and last_phy_res_valid, using correct
types for both (struct and bool). While doing all
this also move the variables to the _agn part of
the hw-specific union since they only apply to
A-MPDUs.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

lq->sta_id cannot be invalid here since this
function will only be called after the station
has been added properly.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Simplify the WEP group key check by checking the
sta pointer instead of the sta_id we calculate
with it; also clean up the comment formatting.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Default WEP keys and regular keys are not allocated
from the same space in the firmware, so we shouldn't
use the same bits to indicate in use.

For default WEP keys, however, mac80211 won't allow
using the same key index twice, so the check is not
necessary at all -- add/remove are perfectly nested
due to those checks.

Other keys are allocated in the device in a global
array that only has a certain number of slots, so
for that we need to keep the allocation bitmap; but
the 802.11 key index isn't relevant there.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

The firmware clears default WEP keys on
transitions to !associated, so we need
to restore them just like stations. This
is rather implicit as part of sending a
station right now, which is odd. Make it
explicit instead and only for agn since
3945 doesn't use hw crypto for WEP.

Due to that, iwl_send_static_wepkey_cmd
is now only used in iwl-sta.c and can be
static.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Size of event log is determined by uCode which is different per NICs.
Set the maximum event log size per device to better match uCode
configuration.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>