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2010-10-11ath9k: A-MPDU rate control info fixBjörn Smedman1-6/+13
This patch fixes the following problems with the rate control feedback generated by ath9k for A-MPDU frames: 1. Rate control feedback is carried on the first frame of an aggregate that is either ACKed, or has execeeded the software retry count and is considered failed. However, ath9k would incorrectly assume the aggregate had the length 1 if one of these conditions did not apply to the first frame of the aggregate, but instead a later frame. This fix therefor copies the bf_nframes field of the buffer in the same manner as the rates field of the tx status. 2. Sometimes the ampdu_len and ampdu_ack_len fields of the tx status was left uninitialized eventhough the IEEE80211_TX_STAT_AMPDU flag was set. This is now avoid by setting flag and fields in the same place. 3. Even if a frame has been selected for aggregation by mac80211 and marked with the IEEE80211_TX_CTL_AMPDU flag it can sometimes happen that ath9k transmits the frame without aggregation. In these cases the ampdu_ack_len field could be incorrectly computed because the nbad parameter to ath_tx_rc_status was incorrect. Cc: <stable@kernel.org> Signed-off-by: Björn Smedman <bjorn.smedman@venatech.se> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11carl9170: A-MPDU frame type filterChristian Lamparter1-1/+41
In the past, carl9170 has been plagued by mysterious ghosts. e.g.: wlan4: deauthenticated from 02:04:d8:3c:ac:c1 (Reason: 0) Apparently, the AP sent us a bogus deauthentication notification. But upon closer inspection the "management frame" turned out to be a corrupted scrap of an unsuccessful A-MPDU. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11carl9170: remove stale rx error pathChristian Lamparter2-6/+11
The total/fatal error bit was erroneously prefixed with AR9170_RX_ERROR instead of AR9170_RX_STATUS. Luckily, the hardware specification confirmed that the 0x80 flag will never be set for mac->error. So, it was always just a dead branch. This patch also imports the latest version of shared wlan.h header from the firmware git. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11carl9170: common error path for bad framesChristian Lamparter1-28/+20
This patch replaces several identical frame drop paths with a single shared rx frame error handler. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath9k: implement channel utilization stats for surveyFelix Fietkau2-16/+98
Results for the active channel are updated whenever a new survey dump is requested, the old data is kept to allow multiple processes to make their own channel utilization averages. All other channels only contain the data for the last time that the hardware was on the channel, i.e. the last scan result or other off-channel activity. Running a background scan does not clear the data for the active channel. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath9k: add compile time checking for the size of the channel listFelix Fietkau2-1/+7
This prevents random memory corruption if the number of channels ever gets changed without an update to the internal channel array size. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath5k: use the common cycle counter / listen time implementationFelix Fietkau3-39/+24
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath9k_hw: move the cycle counter tracking to athFelix Fietkau9-87/+101
Instead of keeping track of wraparound, clear the counters on every access and keep separate deltas for ANI and later survey use. Also moves the function for calculating the 'listen time' for ANI Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath5k: store the clock rate in common data on channel changesFelix Fietkau3-6/+10
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath9k_hw: store the clock rate in common data on channel changesFelix Fietkau3-37/+23
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath5k: Adjust opmode when interfaces are removed.Ben Greear1-26/+40
Otherwise, if there is an AP and a STATION, and AP is removed, the NIC will not revert back to STATION mode. Reported-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-11ath5k: Print out opmode in debugfs.Ben Greear3-0/+42
Helps debug multi-VIF scenarios. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-07ath9k_hw: Fix hw reset failure with HTC driverRajkumar Manoharan1-4/+0
The following commit removed DISABLE_REGWRITE_BUFFER ops. The unnecessary REGWRITE_BUFFER_FLUSH was not removed properly which is causing failure on hw reset. Author: Felix Fietkau <nbd@openwrt.org> Date: Tue Oct 5 12:03:42 2010 +0200 ath9k_hw: clean up register write buffering Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k: Introduce a wrapper for power save disable.Senthil Balasubramanian1-18/+22
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k: remove unnecessary power save flags.Senthil Balasubramanian3-48/+4
drv_config callback is called only after the ack for the nullframe is received and so driver need not do anything special for this. So remove NULLFUNC_COMPLETED, PS_ENABLED flags and bf_isnullfunc flags from ath9k as mac80211 already handles them properly. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: merge ath9k_hw_ani_monitor_old and ath9k_hw_ani_monitor_newFelix Fietkau5-101/+3
After the last rounds of cleanup, these functions are now functionally equivalent and can thus be merged. Also get rid of some excessive (and redundant) debug messages. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: remove function pointer abstraction for internal ANI opsFelix Fietkau3-45/+29
The code gets more concise and readable when making the new ANI functions fall back to the old ones if ANI v2 is disabled. This also makes further code cleanup easier. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: remove code duplication in phy error counter handlingFelix Fietkau4-119/+34
Split out the PHY error counter update from ath9k_hw_ani_monitor_*, reuse it in ath9k_hw_proc_mib_event (merged from ath9k_hw_proc_mib_event_old and ath9k_hw_proc_mib_event_new). Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: clean up ANI state handlingFelix Fietkau6-260/+110
ANI state is kept per channel, so instead of keeping an array of ANI states with an arbitrary size of 255, move the ANI state into the channel struct. Move some config settings that are not per-channel out of the per-channel struct to save some memory. With those changes, ath9k_ani_restart_old and ath9k_ani_restart_new can be merged into a single function. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: add a helper function to check for the new ANI implementationFelix Fietkau1-2/+7
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: clean up register write bufferingFelix Fietkau12-61/+7
Throughout the code, DISABLE_REGWRITE_BUFFER is always called right after REGWRITE_BUFFER_FLUSH. Since that's unlikely to change any time soon, that makes keeping those ops separate rather pointless, as it only increases code size and line number counts. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: merge codepaths that access the cycle counter registersFelix Fietkau5-91/+64
The cycle counters are used by ANI to determine the amount of time that the radio spent not receiving or transmitting. They're also used for debugging purposes if the baseband watchdog on AR9003 detects a lockup. In the future, we want to use these counters to determine the medium utilization and export this information via survey. For that, we need to make sure that the counter is only accessed from one place, which also ensures that wraparounds won't occur at inconvenient points in time. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06ath9k_hw: clean up calibration flagsFelix Fietkau6-77/+31
The calibration actual calibration flags are only used by the per chip family source files, so it makes more sense to define them in those files instead of globally. That way the code has to test for less flags. Also instead of using a separate callback for testing whether a particular calibration type is supported, simply adjust ah->supp_cals in the calibration init which is called right after the hardware reset, before any of the calibrations are run. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6John W. Linville1-1/+1
2010-10-06ath9k_hw: fix regression in ANI listen time calculationFelix Fietkau1-1/+1
wireless-testing commit 37e5bf6535a4d697fb9fa6f268a8354a612cbc00 Author: Luis R. Rodriguez <lrodriguez@atheros.com> Date: Sat Jun 12 00:33:40 2010 -0400 ath9k_hw: fix clock rate calculations for ANI This commit accidentally broke clock rate calculation by doubling the calculated clock rate Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: get correct tx gain type in ath9k_hw_4k_get_eepromGabor Juhos1-1/+9
The base_eep_header_4k structure contains information that the device supports high power tx gain table or not. However the ath9k_hw_4k_get_eeprom function does not return that value when it is called with EEP_TXGAIN_TYPE. This leads to that the tx gain initialization will use the init values from the original tx gain table even if the device inidicates that the high power table should be used. Changes-licensed-under: ISC Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Shu Hwa Shen <shensh@zcomm.com.cn> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath5k: Don't wake internal queuesBruno Randolf1-1/+1
We should only wake up queues which mac80211 knows about (queues 0-3). We have another internal queue ("CAB", queue number 6) which we use for power-saved frames. When transmitted frames are processed from this queue, we have to make sure we don't bother mac80211 with waking a queue it doesn't know about. this fixes: WARNING: at /home/br1/ath/wireless-testing/net/mac80211/util.c:275 __ieee80211_wake_queue+0xd6/0xe0 [mac80211]() Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: Report total tx/rx bytes and packets in debugfs.Ben Greear2-0/+27
Includes pkts/bytes that may have had errors, and includes wireless headers when counting bytes. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath5k: Print rx/tx bytes in debugfsBen Greear3-0/+13
This adds counters for tx and rx bytes, including any errored packets as well as all wireless headers. Signed-off-by: Ben Greear <greearb@candelatech.com> Acked-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: add WDS interfaces to ath9kBill Jordan2-0/+4
Enable WDS for the ath9k driver. Signed-off-by: Bill Jordan <bjordan@rajant.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k : Fix for displaying the channel numberMohammed Shafi Shajakhan1-5/+10
In the ath9k debugging feature 'wiphy' the current channel used by the station is incorrectly displayed.This is because the channels available are sequentially mapped from numbers 0 to 37.This mapping cannot be changed as the channel number is also used as an array index This fix solves the above problem by calculating the channel number from center frequency. Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k_hw: remove some useless calibration dataFelix Fietkau4-19/+0
The percal struct and bitmask for the initial DC calibration are not used anywhere, so they can be removed. Signed-off-by: Felix Fietkau <nbd@openwrt.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: fix channel flag / regd issues with multiple cardsFelix Fietkau1-6/+31
Since the regulatory code touches the channel array, it needs to be copied for each device instance. That way the original channel array can also be made const. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org [all] Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath5k: Allow ath5k to support virtual STA and AP interfaces.Ben Greear3-49/+249
Support up to 4 virtual APs and as many virtual STA interfaces as desired. This patch is ported forward from a patch that Patrick McHardy did for me against 2.6.31. Signed-off-by: Ben Greear <greearb@candelatech.com> Acked-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ar9170: Remove MODULE_FIRMWARE references to two-stage firmwareBen Hutchings1-2/+0
The combined firmware ar9170.fw is preferred and supports all devices. References to the older two-stage firmware are unnecessary. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: return survey data for all channels instead of just the current oneFelix Fietkau1-6/+21
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: remove the noise floor value in the ani structFelix Fietkau3-12/+0
common->ani.noise_floor is now only used for a similar redundant debug message similar to the one that was removed from ath9k_htc in an earlier patch. Remove it from ath9k as well now. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k: do not return default noise floor values via surveyFelix Fietkau1-3/+5
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k_hw: keep calibrated noise floor values per channelFelix Fietkau3-22/+22
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ath9k_htc: remove use of common->ani.noise_floorFelix Fietkau1-12/+1
It is unused aside from a single redundant debug message Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05carl9170: support firmware-based rx filterChristian Lamparter9-10/+75
The hardware rx-filter was essentially disabled, because of a serve, yet unidentifiable problem with iwlagn. Due to these circumstances the driver and mac80211 were left with the job of filtering. This is very unfortunate and has proven to be expensive in terms of latency, memory and load. Therefore the new 1.8.8.3 firmware introduces a flexible filtering infrastructure which allows the driver to offload some of the checks (FCS & PLCP crc check, RA match, control frame filter, etc...) whenever possible. Note: This patch also includes all changes to the shared headers files since the inclusion. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28carl9170: interrupt urbs must not set URB_ZERO_PACKETChristian Lamparter1-2/+0
This patch fixes a bug in the driver which was exposed by CONFIG_USB_DEBUG: "usb 1-1.6.3: BOGUS urb flags, 40 --> 0" The transfer flag "URB_ZERO_PACKET" is only valid for bulk urbs. Reported-by: André Erdmann Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28ath5k: Fix bitmasks and typos for PCU Diagnostic registerBruno Randolf3-19/+18
As reported by Ryan Niemi, some bitmasks in the register definition for the PCU Diagnostic register (DIAG_SW) were missing a zero at the end. While at it fix some typos and add more comments. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28ath5k: Disable interrupts in ath5k_hw_get_tsf64Bruno Randolf1-0/+6
The code in ath5k_hw_get_tsf64() is time critical and will return wrong results if we get interrupted, so disable local interrupts. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28ath5k: Increase "fudge" for beacon timersBruno Randolf1-2/+5
We use FUDGE to make sure the next TBTT is ahead of the current TU. Since we later substract AR5K_TUNE_SW_BEACON_RESP (10) in the timer configuration we need to make sure it is bigger than that. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28ath5k: Check and fix ATIM windowBruno Randolf3-0/+101
This patch adds sanity-checks for the beacon timers and especially the ATIM window to ath5k. It is basically the same what i did for madwifi two years ago and fixes a problem in IBSS mode which has been described as "ramping" pings. See the code comments for a more detailed description and these links: http://madwifi-project.org/ticket/1154 http://madwifi-project.org/changeset/3867 http://thread.gmane.org/gmane.linux.drivers.madwifi.devel/6066 Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28ath5k: Remove unused variable for atim windowBruno Randolf3-3/+1
It's not used and it's unlikely we will ever implement ATIM. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28carl9170: revamp carl9170_tx_prepareChristian Lamparter1-80/+75
David Miller complained about the driver's excessive use of variables in __packed structs. While I did not fully agree with his sole "performance" argument on all accounts. I do see some room for improvement in hot-paths on architectures without an efficient access to unaligned elements. This first patch (dare I say?) optimizes an important tx hot-path in the driver: carl9170_tx_prepare. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28carl9170: fix WARN_ON triggered by Broadcom HT STAsChristian Lamparter1-1/+1
Broadcom's Windows driver for the 4313 advertises an ampdu density of 7 => 16 us. The AR9170 MAC on the other hand only supports densities up to 8 us. This patch removes the noisy WARN_ON, because there is nothing we can do about it. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-28carl9170: fix tx_ampdu_upload counterChristian Lamparter1-1/+14
tx_ampdu_upload was not decreased when an a-MPDU frame had to be kicked out from the tx_pending queues. This broke ampdu aggregation, because the scheduler waits until tx_ampdu_upload drops to zero, before making the next aggregate. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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