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OpenCloudOS-Kernel
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Felix Fietkau 066dae93bd ath9k: rework tx queue selection and fix queue stopping/waking 
The current ath9k tx queue handling code showed a few issues that could
lead to locking issues, tx stalls due to stopped queues, and maybe even
DMA issues.

The main source of these issues is that in some places the queue is
selected via skb queue mapping in places where this mapping may no
longer be valid. One such place is when data frames are transmitted via
the CAB queue (for powersave buffered frames). This is made even worse
by a lookup WMM AC values from the assigned tx queue (which is
undefined for the CAB queue).

This messed up the pending frame counting, which in turn caused issues
with queues getting stopped, but not woken again.

To fix these issues, this patch removes an unnecessary abstraction
separating a driver internal queue number from the skb queue number
(not to be confused with the hardware queue number).

It seems that this abstraction may have been necessary because of tx
queue preinitialization from the initvals. This patch avoids breakage
here by pushing the software <-> hardware queue mapping to the function
that assigns the tx queues and redefining the WMM AC definitions to
match the numbers used by mac80211 (also affects ath9k_htc).

To ensure consistency wrt. pending frame count tracking, these counters
are moved to the ath_txq struct, updated with the txq lock held, but
only where the tx queue selected by the skb queue map actually matches
the tx queue used by the driver for the frame.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Björn Smedman <bjorn.smedman@venatech.se>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
 		2010-11-15 13:25:54 -05:00
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accessibility
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acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-10-26 17:28:37 -07:00
amba
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ata ATA: pata_octeon_cf: Use I/O clock rate for timing calculations. 2010-10-29 19:08:41 +01:00
atm drivers/atm/eni.c: Remove multiple uses of KERN_<level> 2010-10-26 11:35:37 -07:00
auxdisplay
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base Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2010-10-29 15:09:56 -07:00
block Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2010-10-28 17:11:17 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
cdrom cdrom: gdrom: ctrl_in/outX to __raw_read/writeX conversion. 2010-10-27 14:33:39 +09:00
char audit: Call tty_audit_push_task() outside preempt disabled 2010-10-30 08:45:25 -04:00
clocksource
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connector connector: remove lazy workqueue creation 2010-10-24 14:20:01 -07:00
cpufreq [CPUFREQ] add sampling_down_factor tunable to improve ondemand performance 2010-10-22 11:44:47 -04:00
cpuidle
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crypto replace nested max/min macros with {max,min}3 macro 2010-10-26 16:52:12 -07:00
dca
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dio
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dma drivers/dma/Kconfig: add part number for Topcliff. 2010-10-29 14:14:02 -07:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core 2010-10-26 10:13:48 -07:00
eisa
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firewire Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-10-25 08:05:29 -07:00
firmware dmi: log board, system, and BIOS information 2010-10-27 18:03:05 -07:00
gpio gpio: Add VIA VX855 GPIO driver 2010-10-29 00:29:51 +02:00
gpu Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-10-27 20:37:06 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-10-25 07:59:01 -07:00
hwmon hwmon: (it87) Add support for the IT8721F/IT8758E 2010-10-28 20:31:51 +02:00
i2c i2c-i801: Add PCI idents for Patsburg 'IDF' SMBus controllers 2010-10-31 21:07:00 +01:00
ide ide: clean up timed out request handling 2010-10-26 10:17:30 -07:00
idle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2010-10-26 17:28:07 -07:00
ieee802154
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infiniband convert get_sb_single() users 2010-10-29 04:16:28 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-10-31 21:02:39 -04:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-10-30 18:42:58 -07:00
leds leds: Remove auto blink in 88pm860x 2010-10-29 00:29:44 +02:00
lguest
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macintosh Move ams driver to macintosh 2010-10-28 20:31:50 +02:00
mca
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md md: tidy up device searches in read_balance. 2010-10-29 16:40:33 +11:00
media Input: ir-keytable - fix uninitialized variable warning 2010-10-31 21:05:43 -04:00
memstick
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message Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-10-22 17:34:15 -07:00
mfd mfd: Fix a memory leak when unload mc13xxx-core module 2010-10-29 00:30:43 +02:00
misc Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb 2010-10-29 11:49:38 -07:00
mmc mfd: Adding twl6030 mmc card detect support for MMC1 2010-10-29 00:29:59 +02:00
mtd Merge git://git.infradead.org/mtd-2.6 2010-10-30 08:31:35 -07:00
net ath9k: rework tx queue selection and fix queue stopping/waking 2010-11-15 13:25:54 -05:00
nubus
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of of/mips: Cleanup some include directives/files. 2010-10-21 11:10:11 -06:00
oprofile Merge branches 'perf-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-30 11:43:26 -07:00
parisc Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 2010-10-28 09:24:14 -07:00
parport Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
pci Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2010-10-28 17:11:17 -07:00
pcmcia Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
platform Remove duplicate includes from many files 2010-10-27 18:03:18 -07:00
pnp Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-10-26 17:28:37 -07:00
power power: Revert "power_supply: Mark twl4030_charger as broken" 2010-10-29 00:30:44 +02:00
pps
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ps3
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rapidio rapidio: fix destructive port EM initialization for Tsi568 2010-10-27 18:03:16 -07:00
regulator regulator: max8998 BUCK1/2 voltage change with use of GPIOs 2010-10-29 00:30:15 +02:00
rtc rtc: Add support for the rtc found in the MC13892 PMIC 2010-10-29 00:30:01 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-10-31 20:43:12 -04:00
sbus Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-10-25 08:19:14 -07:00
scsi [SCSI] pmcraid: add support for set timestamp command and other fixes 2010-10-29 12:03:01 -05:00
serial Merge branch 'for-linus' of git://www.jni.nu/cris 2010-11-01 07:53:19 -04:00
sfi
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sh sh: intc: switch irq_desc iteration to new active IRQ iterator. 2010-10-28 11:36:31 +09:00
sn
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spi Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2010-11-01 07:50:43 -04:00
ssb ssb: Clear RETRY_TIMEOUT in PCI Configuration for normal devices 2010-11-15 13:23:28 -05:00
staging Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2010-10-31 21:03:23 -04:00
tc
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telephony Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
thermal
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uio Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-10-29 14:17:12 -07:00
uwb uwb: Remove the WLP subsystem and drivers 2010-10-25 14:03:45 +01:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
video Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-10-30 08:26:25 -07:00
virtio
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vlynq
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w1 w1: don't allow arbitrary users to remove w1 devices 2010-10-27 18:03:17 -07:00
watchdog WATCHDOG: octeon-wdt: Use I/O clock rate for timing calculations. 2010-10-29 19:08:42 +01:00
xen convert get_sb_single() users 2010-10-29 04:16:28 -04:00
zorro zorro: Fix device_register() error handling 2010-10-22 09:43:25 +02:00
Kconfig
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Makefile Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-10-25 08:05:29 -07:00