Commit Graph

673 Commits

Author SHA1 Message Date
Felix Fietkau 3a5e969bb2 ath9k: fix race condition in enabling/disabling IRQs
The code currently relies on refcounting to disable IRQs from within the
IRQ handler and re-enabling them again after the tasklet has run.

However, due to race conditions sometimes the IRQ handler might be
called twice, or the tasklet may not run at all (if interrupted in the
middle of a reset).

This can cause nasty imbalances in the irq-disable refcount which will
get the driver permanently stuck until the entire radio has been stopped
and started again (ath_reset will not recover from this).

Instead of using this fragile logic, change the code to ensure that
running the irq handler during tasklet processing is safe, and leave the
refcount untouched.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-02-07 11:00:25 +02:00
Felix Fietkau d63ffc45c5 ath9k: rename tx_complete_work to hw_check_work
Also include common MAC alive check. This should make the hang checks
more reliable for modes where beacons are not sent and is used as a
starting point for further hang check improvements

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-02-07 11:00:17 +02:00
Toke Høiland-Jørgensen 63fefa0504 ath9k: Introduce airtime fairness scheduling between stations
This reworks the ath9k driver to schedule transmissions to connected
stations in a way that enforces airtime fairness between them. It
accomplishes this by measuring the time spent transmitting to or
receiving from a station at TX and RX completion, and accounting this to
a per-station, per-QoS level airtime deficit. Then, an FQ-CoDel based
deficit scheduler is employed at packet dequeue time, to control which
station gets the next transmission opportunity.

Airtime fairness can significantly improve the efficiency of the network
when station rates vary. The following throughput values are from a
simple three-station test scenario, where two stations operate at the
highest HT20 rate, and one station at the lowest, and the scheduler is
employed at the access point:

                  Before   /   After
Fast station 1:    19.17   /   25.09 Mbps
Fast station 2:    19.83   /   25.21 Mbps
Slow station:       2.58   /    1.77 Mbps
Total:             41.58   /   52.07 Mbps

The benefit of airtime fairness goes up the more stations are present.
In a 30-station test with one station artificially limited to 1 Mbps,
we have seen aggregate throughput go from 2.14 to 17.76 Mbps.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-12-15 10:43:05 +02:00
Toke Høiland-Jørgensen 50f08edf98 ath9k: Switch to using mac80211 intermediate software queues.
This switches ath9k over to using the mac80211 intermediate software
queueing mechanism for data packets. It removes the queueing inside the
driver, except for the retry queue, and instead pulls from mac80211 when
a packet is needed. The retry queue is used to store a packet that was
pulled but can't be sent immediately.

The old code path in ath_tx_start that would queue packets has been
removed completely, as has the qlen limit tunables (since there's no
longer a queue in the driver to limit).

The mac80211 intermediate software queues offer significant latency
reductions, and this patch allows ath9k to realise them. The exact gains
from this varies with the test scenario, but in an access point scenario
we have seen latency reductions ranging from 1/3 to as much as an order
of magnitude. We also achieve slightly better aggregation.

Median latency (ping) figures with this patch applied at the access point,
with two high-rate stations and one low-rate station (HT20 5Ghz), running
a Flent rtt_fair_var_up test with one TCP flow and one ping flow going to
each station:

                                 Fast station        Slow station
Default pfifo_fast qdisc:            430.4 ms            638.7 ms
fq_codel qdisc on iface:              35.5 ms            211.8 ms
This patch set:                       22.4 ms             38.2 ms

Median aggregation sizes over the same test:

Default pfifo_fast qdisc:            9.5 pkts            1.9 pkts
fq_codel qdisc on iface:            11.2 pkts            1.9 pkts
This patch set:                     13.9 pkts            1.9 pkts

This patch is based on Tim's original patch set, but reworked quite
thoroughly.

Cc: Tim Shepard <shep@alum.mit.edu>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-11-15 17:00:04 +02:00
Kalle Valo 3cd32dde17 Merge branch 'ath-current' into ath-next
Commit 3c97f5de1f ("ath10k: implement NAPI support") conflicts with
ath-current. To avoid any merge problems merge ath-current to ath-next already now.

Conflicts:
	drivers/net/wireless/ath/ath10k/htt_rx.c
2016-09-09 15:19:40 +03:00
Giedrius Statkevičius e34f2ff40e ath9k: bring back direction setting in ath9k_{start_stop}
A regression was introduced in commit id 79d4db1214 ("ath9k: cleanup
led_pin initial") that broken the WLAN status led on my laptop with
AR9287 after suspending and resuming.

Steps to reproduce:
* Suspend (laptop)
* Resume (laptop)
* Observe that the WLAN led no longer turns ON/OFF depending on the
  status and is always red

Even though for my case it only needs to be set to OUT in ath9k_start
but for consistency bring back the IN direction setting as well.

Fixes: 79d4db1214 ("ath9k: cleanup led_pin initial")
Cc: Miaoqing Pan <miaoqing@codeaurora.org>
Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: <stable@vger.kernel.org> # 4.7+
Link: https://bugzilla.kernel.org/show_bug.cgi?id=151711
Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@gmail.com>
[kvalo@qca.qualcomm.com: improve commit log]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-09-07 16:21:04 +03:00
Felix Fietkau 7711aaf08a ath9k: fix using sta->drv_priv before initializing it
A station pointer can be passed to the driver on tx, before it has been
marked as associated. Since ath9k_sta_state was initializing the entry
too late, it resulted in some spurious crashes.

Fixes: df3c6eb34d ("ath9k: Use sta_state() callback")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-22 19:07:56 +03:00
Felix Fietkau 05860bed49 ath9k: fix client mode beacon configuration
For pure station mode, iter_data.primary_beacon_vif was used and passed
to ath_beacon_config, but not set to the station vif.
This was causing the following warning:

[  100.310919] ------------[ cut here ]------------
[  100.315683] WARNING: CPU: 0 PID: 7 at compat-wireless-2016-06-20/drivers/net/wireless/ath/ath9k/beacon.c:642 ath9k_calculate_summary_state+0x250/0x60c [ath9k]()
[  100.402028] CPU: 0 PID: 7 Comm: kworker/u2:1 Tainted: G        W       4.4.15 #5
[  100.409676] Workqueue: phy0 ieee80211_ibss_leave [mac80211]
[  100.415351] Stack : 8736e98c 870b4b20 87a25b54 800a6800 8782a080 80400d63 8039b96c 00000007
[  100.415351]    803c5edc 87875914 80400000 800a47cc 87a25b54 800a6800 803a0fd8 80400000
[  100.415351]    00000003 87875914 80400000 80094ae0 87a25b54 8787594c 00000000 801ef308
[  100.415351]    803ffe70 801ef300 87193d58 87b3a400 87b3ad00 70687930 00000000 00000000
[  100.415351]    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[  100.415351]    ...
[  100.451703] Call Trace:
[  100.454235] [<800a6800>] vprintk_default+0x24/0x30
[  100.459110] [<800a47cc>] printk+0x2c/0x38
[  100.463190] [<800a6800>] vprintk_default+0x24/0x30
[  100.468072] [<80094ae0>] print_worker_info+0x148/0x174
[  100.473378] [<801ef308>] serial8250_console_putchar+0x0/0x44
[  100.479122] [<801ef300>] wait_for_xmitr+0xc4/0xcc
[  100.484014] [<87193d58>] ieee80211_ibss_leave+0xb90/0x1900 [mac80211]
[  100.490590] [<80081604>] warn_slowpath_common+0xa0/0xd0
[  100.495922] [<801a359c>] dump_stack+0x14/0x28
[  100.500350] [<80071a00>] show_stack+0x50/0x84
[  100.504784] [<80081604>] warn_slowpath_common+0xa0/0xd0
[  100.510106] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k]
[  100.517105] [<800816b8>] warn_slowpath_null+0x18/0x24
[  100.522256] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k]
[  100.529273] [<87025418>] ath9k_set_txpower+0x148/0x498 [ath9k]
[  100.535302] [<871d2c64>] cleanup_module+0xa74/0xd4c [mac80211]
[  100.541237] [<801ef308>] serial8250_console_putchar+0x0/0x44
[  100.547042] [<800a5d18>] wake_up_klogd+0x54/0x68
[  100.551730] [<800a6650>] vprintk_emit+0x404/0x43c
[  100.556623] [<871b9db8>] ieee80211_sta_rx_notify+0x258/0x32c [mac80211]
[  100.563475] [<871ba6a4>] ieee80211_sta_rx_queued_mgmt+0x63c/0x734 [mac80211]
[  100.570693] [<871aa49c>] ieee80211_tx_prepare_skb+0x210/0x230 [mac80211]
[  100.577609] [<800af5d4>] mod_timer+0x15c/0x190
[  100.582220] [<871ba8b8>] ieee80211_sta_work+0xfc/0xe1c [mac80211]
[  100.588539] [<871940b4>] ieee80211_ibss_leave+0xeec/0x1900 [mac80211]
[  100.595122] [<8009ec84>] dequeue_task_fair+0x44/0x130
[  100.600281] [<80092a34>] process_one_work+0x1f8/0x334
[  100.605454] [<80093830>] worker_thread+0x2b4/0x408
[  100.610317] [<8009357c>] worker_thread+0x0/0x408
[  100.615019] [<8009357c>] worker_thread+0x0/0x408
[  100.619705] [<80097b68>] kthread+0xdc/0xe8
[  100.623886] [<80097a8c>] kthread+0x0/0xe8
[  100.627961] [<80060878>] ret_from_kernel_thread+0x14/0x1c
[  100.633448]
[  100.634956] ---[ end trace aafbe57e9ae6862f ]---

Fixes: cfda2d8e23 ("ath9k: Fix beacon configuration for addition/removal of interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-22 19:05:01 +03:00
Bob Copeland 4c51e7db87 ath9k: fix misleading indent
Fixes smatch warning:

ath9k_vif_iter_set_beacon() warn if statement not indented

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-19 13:05:26 +03:00
Masahiro Yamada 97f2645f35 tree-wide: replace config_enabled() with IS_ENABLED()
The use of config_enabled() against config options is ambiguous.  In
practical terms, config_enabled() is equivalent to IS_BUILTIN(), but the
author might have used it for the meaning of IS_ENABLED().  Using
IS_ENABLED(), IS_BUILTIN(), IS_MODULE() etc.  makes the intention
clearer.

This commit replaces config_enabled() with IS_ENABLED() where possible.
This commit is only touching bool config options.

I noticed two cases where config_enabled() is used against a tristate
option:

 - config_enabled(CONFIG_HWMON)
  [ drivers/net/wireless/ath/ath10k/thermal.c ]

 - config_enabled(CONFIG_BACKLIGHT_CLASS_DEVICE)
  [ drivers/gpu/drm/gma500/opregion.c ]

I did not touch them because they should be converted to IS_BUILTIN()
in order to keep the logic, but I was not sure it was the authors'
intention.

Link: http://lkml.kernel.org/r/1465215656-20569-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Stas Sergeev <stsp@list.ru>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: "Dmitry V. Levin" <ldv@altlinux.org>
Cc: yu-cheng yu <yu-cheng.yu@intel.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Will Drewry <wad@chromium.org>
Cc: Nikolay Martynov <mar.kolya@gmail.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Rafal Milecki <zajec5@gmail.com>
Cc: James Cowgill <James.Cowgill@imgtec.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Tony Wu <tung7970@gmail.com>
Cc: Huaitong Han <huaitong.han@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Gelmini <andrea.gelmini@gelma.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rabin Vincent <rabin@rab.in>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04 08:50:07 -04:00
Benjamin Berg cfda2d8e23 ath9k: Fix beacon configuration for addition/removal of interfaces
This patch fixes some issues with interface reconfiguration. It could
for example happen that an AP interface in beacon slot 0 was removed
leaving an IBSS station in one of the other slots. When this happens
the driver never sends out the beacon as it only tries to send a beacon
from slot 0.

Appart from that the tracking of required changes to the beacon config is
relatively complicated and prone to errors.

The approach taken here is to solve reconfiguration issues is to
reconfigure the beacons when any interface changes. This means that
the complexity of deciding whether an interface change may modify the
beacon configuration is gone. It also means that the beacon config will
be reliably updated when an interface is removed.

The issue that a single non-AP interface might not be in beacon
slot 0 and wouldn't be send out is solved by moving it into the
first slot. The TSF value in hardware is adjusted accordingly so
that the timestamp of the beacons stay consistent.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08 17:03:41 +03:00
Benjamin Berg 11b0ac2e0c ath9k: Remove some #defined constants to decrease verbosity
The removed ATH9K_SLOT_TIME_X constants simply map the value in microseconds
to the same integer. These constants were not used consistently, so fix the
inconsistency issue by replacing all occurances with the integer equivalent.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08 17:03:37 +03:00
Benjamin Berg 7fde51227a ath9k: Expose tsf_adjustment in mac80211 tsf getters and setters.
The ath9k driver modifies the TSF for VIFs for the purpose of sending
beacons in a staggered fashion. This patch exposes this VIF specific
adjustment of the TSF value to mac80211. Without the change the TSF
routines handle the hardware TSF value instead of the actual TSF value as
seen on the air.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08 17:03:33 +03:00
Benjamin Berg 9580cb889f ath9k: Handle channel context in get_/set_/reset_tsf
The ath9k TSF handling routines need to be aware of the channel context that
is being modified. With this change the TSF related values that are stored
in each channel context will be correctly tracked and the harware will only
be updated if the modified context is currently the active one.

Without this change the TSF modifications done using these routines would
for example be lost during a hardware reset as done by ath_complete_reset.

Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08 17:03:24 +03:00
Johannes Berg 57fbcce37b cfg80211: remove enum ieee80211_band
This enum is already perfectly aliased to enum nl80211_band, and
the only reason for it is that we get IEEE80211_NUM_BANDS out of
it. There's no really good reason to not declare the number of
bands in nl80211 though, so do that and remove the cfg80211 one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-12 15:56:15 +02:00
Miaoqing Pan 79d4db1214 ath9k: cleanup led_pin initial
Make ath_init_leds() and ath_deinit_leds() pairs as the only
API to set leds, also removed direction configuration from
ath9k_start() and ath9k_stop(). So the initial is more clear
now.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-03-11 14:00:02 +02:00
Miaoqing Pan b2d70d4944 ath9k: make GPIO API to support both of WMAC and SOC
commit 61b559dea4 ("ath9k: add extra GPIO led support")
added ath9k to support access SOC's GPIOs, but implemented
in a separated API: ath9k_hw_request_gpio().

So this patch make the APIs more common, to support both
of WMAC and SOC GPIOs. The new APIs as below,

void ath9k_hw_gpio_request_in();
void ath9k_hw_gpio_request_out();
void ath9k_hw_gpio_free();

NOTE, the BSP of the SOC chips(AR9340, AR9531, AR9550, AR9561)
should set the corresponding MUX registers correctly.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-03-11 14:00:02 +02:00
Kalle Valo 89ef41bfaa Merge 'net-next/master'
Needed by the upcoming merge of iwlwifi-next-for-kalle-2016-03-02 tag.
2016-03-06 14:57:44 +02:00
Kalle Valo b9a9693fd9 ath9k: request NOA update when chanctx active
Request NOA update when chanctx active, also in case
of STA.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-01-26 16:47:38 +02:00
Sara Sharon 50ea05efaf mac80211: pass block ack session timeout to to driver
Currently mac80211 does not inform the driver of the session
block ack timeout when starting a rx aggregation session.
Drivers that manage the reorder buffer need to know this
parameter.
Seeing that there are now too many arguments for the
drv_ampdu_action() function, wrap them inside a structure.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-14 11:13:17 +01:00
Miaoqing Pan ed14dc0af7 ath9k: feeding entropy in kernel from ADC capture
This patch is derived from
commit 6301566e0b ("ath9k: export HW random number generator"),

We evaluated the entropy of the ADC data on QCA9531, QCA9561, QCA955x,
and AR9340, and it has sufficient quality random data (at least 10 bits
and up to 22 bits of min-entropy for a 32-bit value). We conservatively
assume the min-entropy is 10 bits out of 32 bits. Thus, ATH9K_RNG_BUF_SIZE
is set to 320 (u32) i.e., 1.25 kilobytes of data is inserted to fill up
the pool as soon as the entropy counter becomes 896/4096 (set by random.c).
Since ADC was not designed to be a dedicated HW RNG, we do not want to bind
it to /dev/hwrng framework directly. This patch feeds the entropy directly
from the WiFi driver to the input pool. The ADC register output is only
used as a seed for the Linux entropy pool. No conditioning is needed,
since all the conditioning is performed by the pool itself.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2015-12-11 14:08:58 +02:00
David S. Miller 9916596742 Major changes:
iwlwifi
 
 * some debugfs improvements
 * fix signedness in beacon statistics
 * deinline some functions to reduce size when device tracing is enabled
 * filter beacons out in AP mode when no stations are associated
 * deprecate firmwares version -12
 * fix a runtime PM vs. legacy suspend race
 * one-liner fix for a ToF bug
 * clean-ups in the rx code
 * small debugging improvement
 * fix WoWLAN with new firmware versions
 * more clean-ups towards multiple RX queues;
 * some rate scaling fixes and improvements;
 * some time-of-flight fixes;
 * other generic improvements and clean-ups;
 
 brcmfmac
 
 * rework code dealing with multiple interfaces
 * allow logging firmware console using debug level
 * support for BCM4350, BCM4365, and BCM4366 PCIE devices
 * fixed for legacy P2P and P2P device handling
 * correct set and get tx-power
 
 ath9k
 
 * add support for Outside Context of a BSS (OCB) mode
 
 mwifiex
 
 * add USB multichannel feature
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Merge tag 'wireless-drivers-next-for-davem-2015-10-09' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
Major changes:

iwlwifi

* some debugfs improvements
* fix signedness in beacon statistics
* deinline some functions to reduce size when device tracing is enabled
* filter beacons out in AP mode when no stations are associated
* deprecate firmwares version -12
* fix a runtime PM vs. legacy suspend race
* one-liner fix for a ToF bug
* clean-ups in the rx code
* small debugging improvement
* fix WoWLAN with new firmware versions
* more clean-ups towards multiple RX queues;
* some rate scaling fixes and improvements;
* some time-of-flight fixes;
* other generic improvements and clean-ups;

brcmfmac

* rework code dealing with multiple interfaces
* allow logging firmware console using debug level
* support for BCM4350, BCM4365, and BCM4366 PCIE devices
* fixed for legacy P2P and P2P device handling
* correct set and get tx-power

ath9k

* add support for Outside Context of a BSS (OCB) mode

mwifiex

* add USB multichannel feature
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-12 19:39:18 -07:00
Jan Kaisrlik 862a336c83 ath9k: Add support for OCB mode
The patch adds support for "outside the context of a BSS"(OCB) mode
to ath9k driver and extends debugfs files by OCB ralated information.

This patch was tested on AR9380-AL1A cards.

Signed-off-by: Jan Kaisrlik <kaisrja1@fel.cvut.cz>
Cc: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-09-29 10:39:22 +03:00
Emmanuel Grumbach e3abc8ff0f mac80211: allow to transmit A-MSDU within A-MPDU
Advertise the capability to send A-MSDU within A-MPDU
in the AddBA request sent by mac80211. Let the driver
know about the peer's capabilities.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:23 +02:00
Janusz.Dziedzic@tieto.com 1738203ee7 ath9k: setup rxfilter when offchannel
Setup rxfiler correctly for offchannel ctx.

This fix problem we didn't configure rxfilter, next
didn't receive probe requests and next failed
p2p_find. This was seen when ath9k loaded with
use_chanctx=1

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-06 10:11:14 +03:00
Janusz.Dziedzic@tieto.com f3771c0828 ath9k: setup rxfilter for all chanctx
While mac80211 setup this per HW, set same
rxfilter configuration for all chanctx.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-06 10:11:10 +03:00
Janusz.Dziedzic@tieto.com d83520b7cd ath9k: handle RoC cancel correctly
In case we will get ROC cancel from mac80211 we
should not call ieee80211_remain_on_channel_expired().

In other case I hit such warning on MIPS and
p2p negotiation failed (tested with use_chanctx=1).

ath: phy0: Starting RoC period
ath: phy0: Channel definition created: 2412 MHz
ath: phy0: Assigned next_chan to 2412 MHz
ath: phy0: Offchannel duration for chan 2412 MHz : 506632
ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz
ath: phy0: Stopping current chanctx: 2412
ath: phy0: Flush timeout: 200
ath: phy0: ath_chanctx_set_next: Set channel 2412 MHz
ath: phy0: Set channel: 2412 MHz width: 0
ath: phy0: Reset to 2412 MHz, HT40: 0 fastcc: 0
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_TSF_TIMER, state: ATH_CHANCTX_STATE_IDLE
ath: phy0: ath_offchannel_channel_change: offchannel state: ATH_OFFCHANNEL_ROC_START
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state: ATH_CHANCTX_STATE_IDLE
ath: phy0: Cancel RoC
ath: phy0: RoC aborted
ath: phy0: RoC request on vif: 00:03:7f:4e:a0:cd, type: 1 duration: 500
ath: phy0: Starting RoC period
ath: phy0: Channel definition created: 2412 MHz
ath: phy0: Assigned next_chan to 2412 MHz
ath: phy0: Offchannel duration for chan 2412 MHz : 506705
ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz
ath: phy0: ath_offchannel_channel_change: offchannel state: ATH_OFFCHANNEL_ROC_START
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state: ATH_CHANCTX_STATE_IDLE
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3312 at drivers/net/wireless/ath/ath9k/main.c:2319
Modules linked in: ath9k ath9k_common ath9k_hw ath mac80211 cfg80211

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-06 10:11:06 +03:00
Felix Fietkau 300f77c08d ath9k: fix DMA stop sequence for AR9003+
AR93xx and newer needs to stop rx before tx to avoid getting the DMA
engine or MAC into a stuck state.
This should reduce/fix the occurence of "Failed to stop Tx DMA" logspam.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-06-08 11:39:58 +03:00
Johannes Berg df1404650c mac80211: remove support for IFF_PROMISC
This support is essentially useless as typically networks are encrypted,
frames will be filtered by hardware, and rate scaling will be done with
the intended recipient in mind. For real monitoring of the network, the
monitor mode support should be used instead.

Removing it removes a lot of corner cases.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:13 +02:00
David S. Miller 28c0f02ffe Major changes:
brcmfmac:
 
 * sdio improvements
 * add a debugfs file so users can provide us all the revinfo we could
   ask for
 
 iwlwifi:
 
 * add triggers for firmware dump collection
 * remove support for -9.ucode
 * new statitics API
 * rate control improvements
 
 ath9k:
 
 * add per-vif TX power capability
 * BT coexistance fixes
 
 ath10k:
 
 * qca6174: enable STA transmit beamforming (TxBF) support
 * disable multi-vif power save by default
 
 bcma:
 
 * enable support for PCIe Gen 2 host devices
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Merge tag 'wireless-drivers-next-for-davem-2015-03-06' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Major changes:

brcmfmac:

* sdio improvements
* add a debugfs file so users can provide us all the revinfo we could
  ask for

iwlwifi:

* add triggers for firmware dump collection
* remove support for -9.ucode
* new statitics API
* rate control improvements

ath9k:

* add per-vif TX power capability
* BT coexistance fixes

ath10k:

* qca6174: enable STA transmit beamforming (TxBF) support
* disable multi-vif power save by default

bcma:

* enable support for PCIe Gen 2 host devices

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 15:46:08 -05:00
Joe Perches 93803b3385 wireless: Use eth_<foo>_addr instead of memset
Use the built-in function instead of memset.

Miscellanea:

Add #include <linux/etherdevice.h> where appropriate
Use ETH_ALEN instead of 6

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 17:01:36 -05:00
Lorenzo Bianconi 283dd11994 ath9k: add per-vif TX power capability
Configure the HW with highest TX power among all vif when HW TPC has been
enabled in order to add support to per-vif TX power capability. Use lowest
configured power among all interfaces when TPC is disabled

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-03 15:36:01 +02:00
David S. Miller c8ac18f200 Major changes:
iwlwifi:
 
 * more work for new devices (4165 / 8260)
 * cleanups / improvemnts in rate control
 * fixes for TDLS
 * major statistics work from Johannes - more to come
 * improvements for the fw error dump infrastructure
 * usual amount of small fixes here and there (scan, D0i3 etc...)
 * add support for beamforming
 * enable stuck queue detection for iwlmvm
 * a few fixes for EBS scan
 * fixes for various failure paths
 * improvements for TDLS Offchannel
 
 wil6210:
 
 * performance tuning
 * some AP features
 
 brcm80211:
 
 * rework some code in SDIO part of the brcmfmac driver related to
   suspend/resume that were found doing stress testing
 * in PCIe part scheduling of worker thread needed to be relaxed
 * minor fixes and exposing firmware revision information to
   user-space, ie. ethtool.
 
 mwifiex:
 
 * enhancements for change virtual interface handling
 * remove coupling between netdev and FW supported interface
   combination, now conversion from any type of supported interface
   types to any other type is possible
 * DFS support in AP mode
 
 ath9k:
 
 * fix calibration issues on some boards
 * Wake-on-WLAN improvements
 
 ath10k:
 
 * add support for qca6174 hardware
 * enable RX batching to reduce CPU load
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Merge tag 'wireless-drivers-next-for-davem-2015-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Major changes:

iwlwifi:

* more work for new devices (4165 / 8260)
* cleanups / improvemnts in rate control
* fixes for TDLS
* major statistics work from Johannes - more to come
* improvements for the fw error dump infrastructure
* usual amount of small fixes here and there (scan, D0i3 etc...)
* add support for beamforming
* enable stuck queue detection for iwlmvm
* a few fixes for EBS scan
* fixes for various failure paths
* improvements for TDLS Offchannel

wil6210:

* performance tuning
* some AP features

brcm80211:

* rework some code in SDIO part of the brcmfmac driver related to
  suspend/resume that were found doing stress testing
* in PCIe part scheduling of worker thread needed to be relaxed
* minor fixes and exposing firmware revision information to
  user-space, ie. ethtool.

mwifiex:

* enhancements for change virtual interface handling
* remove coupling between netdev and FW supported interface
  combination, now conversion from any type of supported interface
  types to any other type is possible
* DFS support in AP mode

ath9k:

* fix calibration issues on some boards
* Wake-on-WLAN improvements

ath10k:

* add support for qca6174 hardware
* enable RX batching to reduce CPU load

Conflicts:
	drivers/net/wireless/rtlwifi/pci.c

Conflict resolution is to get rid of the 'end' label and keep
the rest.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-09 12:13:58 -08:00
Sujith Manoharan c4d0975bba ath9k: Remove unused BMISS processing
The various variables tracking bmiss interrupts
are not really used anywhere except in a debug
message. Remove them since they have no functional
purpose.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-02-03 15:31:05 +02:00
Felix Fietkau e3f31175a3 ath9k: fix race condition in irq processing during hardware reset
To fix invalid hardware accesses, the commit 872b5d814f ("ath9k: do not
access hardware on IRQs during reset") made the irq handler ignore interrupts
emitted after queueing a hardware reset (which disables the IRQ). This left a
small time window for the IRQ to get re-enabled by the tasklet, which caused
IRQ storms.  Instead of returning IRQ_NONE when ATH_OP_HW_RESET is set, disable
the IRQ entirely for the duration of the reset.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-19 14:32:29 +02:00
John W. Linville 81c412600f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-12-08 13:58:58 -05:00
Felix Fietkau 872b5d814f ath9k: do not access hardware on IRQs during reset
Instead of killing interrupts during reset when the first one happens,
kill them before issuing the reset.
This fixes an easy to reproduce crash with multiple cards sharing the
same IRQ.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-12-01 15:57:22 -05:00
Felix Fietkau ef739ab6aa ath9k: set ATH_OP_INVALID before disabling hardware
Closes another small IRQ handler race

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-12-01 15:57:22 -05:00
John W. Linville 9a638ddfb0 It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
  * TDLS off-channel support set from Arik/Liad, with some support
    patches I did
  * custom regulatory fixes from Arik
  * minstrel VHT fix (and a small optimisation) from Felix
  * add back radiotap vendor namespace support (myself)
  * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
  * CSA improvements (Luca)
  * WoWLAN Net Detect (wake on network found) support (Luca)
  * and lots of other smaller changes from many people
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Merge tag 'mac80211-next-for-john-2014-11-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg <johannes@sipsolutions.net> says:

"It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
 * TDLS off-channel support set from Arik/Liad, with some support
   patches I did
 * custom regulatory fixes from Arik
 * minstrel VHT fix (and a small optimisation) from Felix
 * add back radiotap vendor namespace support (myself)
 * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
 * CSA improvements (Luca)
 * WoWLAN Net Detect (wake on network found) support (Luca)
 * and lots of other smaller changes from many people"

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-20 16:09:30 -05:00
John W. Linville ab1f5a532c Merge commit '4e6ce4dc7ce71d0886908d55129d5d6482a27ff9' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-11-19 15:38:48 -05:00
Johannes Berg a344d6778a mac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR
Allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR with software
based scanning and generate a random MAC address for them for every
scan request with the flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:46:09 +01:00
Sujith Manoharan 2c3634a8d4 ath9k: Handle failure to send NoA
If for some reason a beacon with a new NoA is
not sent out, then reset the mgd_prepare_tx flag.
Not doing this will result in a situation where
a GO will send a new NoA when it shouldn't.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:32:16 -05:00
Sujith Manoharan 6185672aba ath9k: Cancel pending offchannel operations
This patch makes sure that pending roc/scan
operations are cancelled properly when a new
context is assigned/unassigned.

The flush_work() call to flush out any scheduled
channel context work is removed, instead, sc->mutex
is dropped to allow any pending work to get a chance
to complete by the channel scheduler. Also, increase
the timeout to allow a switch to an active GO.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:32:16 -05:00
Sujith Manoharan aeeb206579 ath9k: Fix LED configuration
On some x86 platforms, the LED gpio is active high
instead of active low. Identify such cards and modify
the GPIO usage to make sure LED works properly.

Cc: Russell Hu <rhu@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:32:16 -05:00
Chun-Yeow Yeoh e6510b1120 ath9k|ath9k_htc: Seperate the software crypto flag for Tx and Rx
Use the sw_mgmt_crypto_tx flag to trigger the CCMP encryption
for transmitted management frames to be done in software while
the sw_mgmt_crypto_rx flag is used to trigger the CCMP decryption
for received management frames to be done in software.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:32:15 -05:00
Chun-Yeow Yeoh 4b870c26e0 ath9k: fix the assignment of hw queues for mesh interface
We need to assign the hw queues for mesh interface. Otherwise,
we are not able to bring up the mesh interface due to the
IEEE80211_INVAL_HW_QUEUE error.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:32:14 -05:00
Ben Greear daad166028 ath9k: fix regression in bssidmask calculation
The commit that went into 3.17:

    ath9k: Summarize hw state per channel context

    Group and set hw state (opmode, primary_sta, beacon conf) per
    channel context instead of whole list of vifs. This would allow
    each channel context to run in different mode (STA/AP).

    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
    Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
    Signed-off-by: John W. Linville <linville@tuxdriver.com>

broke multi-vif configuration due to not properly calculating
the bssid mask.

The test case that caught this was:

 create wlan0 and sta0-4 (6 total), not sure how much that matters.
 associate all 6 (works fine)
 disconnect 5 of them, leaving sta0 up
 Start trying to bring up the other 5 one at a time.  It will
 fail, with iw events looking like this (in these logs, several
 sta are trying to come up, but symptom is the same with just one)

The patch causing the regression made quite a few changes, but
the part I think caused this particular problem was not
recalculating the bssid mask when adding and removing interfaces.

Re-adding those calls fixes my test case.  Fix bad comment
as well.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17 15:02:52 -05:00
Oleksij Rempel f00a422cc8 ath9k: move ath9k_spectral_scan_ from main.c to spectral.c
Now we should be ready to make this code common.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-11 16:31:14 -05:00
Oleksij Rempel 963916dfe2 ath9k: make ath9k_spectral_scan_ do not depend on ath_softc
last preparation before moving ath9k_spectral_scan_ to spectral.c

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-11 16:31:14 -05:00
Oleksij Rempel ef948da55f ath9k: use ath_common instead of ieee80211_hw in ath9k_spectral_scan_
we don't have here any ieee80211_hw dependencies any way.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-11 16:31:14 -05:00