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* nl80211/mac80211: Report signal averageBruno Randolf2010-11-188-1/+18
| | | | | | | | | | | Extend nl80211 to report an exponential weighted moving average (EWMA) of the signal value. Since the signal value usually fluctuates between different packets, an average can be more useful than the value of the last packet. This uses the recently added generic EWMA library function. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath5k: Use generic EWMA libraryBruno Randolf2010-11-185-29/+8
| | | | | | | | Remove ath5k's private moving average implementation in favour of the generic library version. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* lib: Add generic exponentially weighted moving average (EWMA) functionBruno Randolf2010-11-184-0/+94
| | | | | | | | | | | | | | | This adds generic functions for calculating Exponentially Weighted Moving Averages (EWMA). This implementation makes use of a structure which keeps the EWMA parameters and a scaled up internal representation to reduce rounding errors. The original idea for this implementation came from the rt2x00 driver (rt2x00link.c). I would like to use it in several places in the mac80211 and ath5k code and I hope it can be useful in many other places in the kernel code. Signed-off-by: Bruno Randolf <br1@einfach.org> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: fix powersaving clients racesJohannes Berg2010-11-174-7/+29
| | | | | | | | | | | | | | | | | | | | | | The code to handle powersaving stations has a race: when the powersave flag is lifted from a station, we could transmit a packet that is being processed for TX at the same time right away, even if there are other frames queued for it. This would cause frame reordering. To fix this, lift the flag only under the appropriate lock that blocks TX. Additionally, the code to allow drivers to block a station while frames for it are on the HW queue is never re-enabled the station, so traffic would get stuck indefinitely. Fix this by clearing the flag for this appropriately. Finally, as an optimisation, don't do anything if the driver unblocks an already unblocked station. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: defines for AC numbersJohannes Berg2010-11-172-1/+24
| | | | | | | | | | | In many places we've just hardcoded the AC numbers -- which is a relic from the original mac80211 (d80211). Add constants for them so we know what we're talking about. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: add support for reading EEPROM data from the internal OTP ROMFelix Fietkau2010-11-172-6/+93
| | | | | | | | | | | Some of the new AR9003 cards do not come with an external EEPROM chip anymore. Calibration data on these cards is stored in the OTP ROM on the chip. This patch adds support for reading this data, and also adds support for different EEPROM chip sizes (512 bytes instead of 1K). Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: store frame information used by aggregation inside the skb tx infoFelix Fietkau2010-11-172-109/+109
| | | | | | | | | | | | | | Since the pointers after the rates in the tx info cannot be used anymore after frames have been queued, this area can be used to store information that was previously stored in the ath_buf. With these changes, we can delay the ath_buf assignment in the aggregation code until aggregates are formed. That will not only make it possible to simplify DMA descriptor setup to do less rewriting of uncached memory, but will also make it easier to move aggregation out of the core of the ath9k tx path. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: more tx setup cleanupsFelix Fietkau2010-11-172-74/+59
| | | | | | | | | | | | - remove the BUF_HT flag, and instead check for IEEE80211_TX_CTL_AMPDU before calling ath_tx_send_ampdu. - remove a few unused variables - calculate frame length before adding the frame padding - merge the misnamed ath_tx_start_dma function into ath_tx_start - remove an unused argument for assign_aggr_tid_seqno Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: block new AMPDU sessions if SC_OP_TXAGGR is not setFelix Fietkau2010-11-171-0/+3
| | | | | | | This makes further tx path cleanups easier Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: clean up code duplication around ath_tx_startFelix Fietkau2010-11-174-73/+39
| | | | | | | | Merge initial processing for the CAB queue and regular tx. Also move ath_tx_cabq() to beacon.c and make it static. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bf_tx_aborted from struct ath_bufFelix Fietkau2010-11-172-15/+9
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_frmlen from struct ath_buf_stateFelix Fietkau2010-11-172-27/+38
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_nframes from struct ath_buf_stateFelix Fietkau2010-11-172-52/+47
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_al from struct ath_buf_stateFelix Fietkau2010-11-172-20/+18
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_keyix from struct ath_buf_stateFelix Fietkau2010-11-172-8/+8
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_paprd_timestamp from struct ath_buf_stateFelix Fietkau2010-11-173-7/+4
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_keytype from struct ath_buf_stateFelix Fietkau2010-11-172-6/+5
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_tidno from struct ath_buf_stateFelix Fietkau2010-11-172-14/+13
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove bfs_seqno from struct ath_buf_stateFelix Fietkau2010-11-172-18/+28
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: fix PA predistortion training frame setupFelix Fietkau2010-11-171-3/+3
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: set default values for radar pulse detectionFelix Fietkau2010-11-173-0/+32
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Modify rt2x00queue_remove_l2pad to make skb->data two-byte alignmentRA-Jay Hung2010-11-171-2/+4
| | | | | | | | | When send out skb data to mac80211, orignal code will cause mac80211 unaligned access, so modify code to make mac80211 can natural access. Signed-off-by: RA-Jay Hung <jay_hung@ralinktech.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Fix header_length in rt2x00lib_txdoneRA-Jay Hung2010-11-171-2/+6
| | | | | | | | Put the assignment of header_length after pull out extra tx headroom Signed-off-by: RA-Jay Hung <jay_hung@ralinktech.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Fix rt2800 USB TX Path DMA issueRA-Jay Hung2010-11-171-13/+26
| | | | | | | | | | | | | | | rt2800usb chips need to add 1~3 bytes zero padding after each 802.11 header & payload, and at the end need to add 4 bytes zero padding whether doing TX bulk aggregation or not, TXINFO_W0_USB_DMA_TX_PKT_LEN in TXINFO must include 1-3 bytes padding after 802.11 header & payload but do not include 4 bytes end zero padding. In rt2800usb_get_tx_data_len do not consider multiple of the USB packet size case, sometimes this will cause USB DMA problem. Signed-off-by: RA-Jay Hung <jay_hung@ralinktech.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Use ioremap for SoC devices instead of KSEG1ADDR.Gertjan van Wingerde2010-11-172-3/+7
| | | | | | | | | | Make the code a bit more portable to architectures that do not support KSEG1ADDR. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Tested-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Remove unneccessary internal Kconfig symbols.Gertjan van Wingerde2010-11-172-30/+20
| | | | | | | | | | CONFIG_RT2800PCI_PCI and CONFIG_RT2800PCI_SOC are strictly not needed as we can check the dependent symbols directly in the rest of Kconfig and the code, so clean up the Kconfig namespace a bit. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Remove RT30XX Kconfig variables.Gertjan van Wingerde2010-11-173-121/+85
| | | | | | | | | | | | | Enabling of RT30xx devices via Kconfig variables was introduced when these devices weren't properly supported yet. Now that that they are properly supported and functional, we can remove these Kconfig variables for RT30xx devices and simply enable them whenever rt2800pci and/or rt2800usb is enabled. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Clean up Kconfig for RT2800 devices.Gertjan van Wingerde2010-11-171-28/+19
| | | | | | | | | | | | | | General clean up of the Kconfig part for RT28XX devices. Also remove the indications of non functional support for rt27xx/rt28xx/rt30xx devices, as this is no longer true. They just work fine. Finally, remove the experimental indications for rt27xx/rt28xx/rt30xx devices as that is no longer true. Keep the experimental indications for rt33xx/rt35xx devices, though. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Add initial support for RT3370/RT3390 devices.Gertjan van Wingerde2010-11-175-6/+39
| | | | | | | | | Modified from Eddy's patch by adding the RT3370 USB support as well. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Eddy Tsai <Eddy_Tsai@ralinktech.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Increase REGISTER_BUSY_COUNTIvo van Doorn2010-11-171-1/+1
| | | | | | | | | | | | | For some hardware the REGISTER_BUSY_COUNT isn't sufficient, increase the REGISTER_BUSY_COUNT to 100 to catch most devices which have more problems with accessing the registers. For normal operating devices nothing would change as they will exit the loop early anyway. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_htc: Use macro for caldata array sizeMohammed Shafi Shajakhan2010-11-161-1/+1
| | | | | | | | The calibration data variable size is based on the number of channels available in the ath9k driver. Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: kill elapsed_jiffiesStanislaw Gruszka2010-11-162-11/+1
| | | | | | | | Subtract of jiffies is fine even if one variable overwrap. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: simplify iwlagn_tx_skbStanislaw Gruszka2010-11-161-21/+12
| | | | | | | | | We can simplify length calculation in iwlagn_tx_skb, that function is enough complex, without fuzz it more than necessary. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwl3945: remove unused len_org variableStanislaw Gruszka2010-11-161-8/+1
| | | | | | Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: add support for setting the ad-hoc multicast rateFelix Fietkau2010-11-164-8/+23
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: add support for setting the ad-hoc multicast rateFelix Fietkau2010-11-163-0/+11
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Add function to get probe request template for current APJuuso Oikarinen2010-11-164-5/+61
| | | | | | | | | | | | | | | | | Chipsets with hardware based connection monitoring need to autonomically send directed probe-request frames to the AP (in the event of beacon loss, for example.) For the hardware to be able to do this, it requires a template for the frame to transmit to the AP, filled in with the BSSID and SSID of the AP, but also the supported rate IE's. This patch adds a function to mac80211, which allows the hardware driver to fetch this template after association, so it can be configured to the hardware. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: add a private op for configuring radar pulse detectionFelix Fietkau2010-11-163-0/+100
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: clean up tx buffer setupFelix Fietkau2010-11-161-78/+39
| | | | | | | | | | | | | Merge ath_tx_send_normal and ath_tx_send_ht_normal. Move the paprd state initialization and sequence number assignment to reduce the number of redundant checks. This not only simplifies buffer allocation error handling, but also removes a small inconsistency in the buffer HT flag. This flag should only be set if the frame is also a QoS data frame. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove the tx info padding byte abuseFelix Fietkau2010-11-164-22/+10
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: handle tx underrun in the driver instead of rate controlFelix Fietkau2010-11-163-25/+20
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: remove the unnecessary private xretry tx flagFelix Fietkau2010-11-163-5/+1
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath5k: Cleanup opmode setting logic.Ben Greear2010-11-161-10/+4
| | | | | | | | | | An earlier review suggested moving the code in a small method that was only called once inline. This patch accomplishes that. Signed-off-by: Ben Greear <greearb@candelatech.com> Acked-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Fix low throughput issue with AR93xxSenthil Balasubramanian2010-11-164-2/+33
| | | | | | | | | | | | TX underruns were noticed when RTS/CTS preceded aggregates. This issue was noticed in ar93xx family of chipsets only. The workaround involves padding the RTS or CTS length up to the min packet length of 256 bytes required by the hardware by adding delimiters to the fist descriptor of the aggregate. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix bug in delimiter padding computationVasanthakumar Thiagarajan2010-11-161-2/+2
| | | | | | | | | | There is a roundng error in delimiter padding computation which causes severe throughput drop with some of AR9003. signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Cc:stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Add helper function for interpolationVasanthakumar Thiagarajan2010-11-161-20/+28
| | | | | | | | Also round off interpolated values this would improve power accuracy by 0.5dB in some cases. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Improve power control accuracy for AR9003Vasanthakumar Thiagarajan2010-11-161-1/+11
| | | | | | | It is done for 5Ghz by adding three temperature slopes. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Enable strong signal detection for AR9003Vasanthakumar Thiagarajan2010-11-161-0/+79
| | | | | | | | Attenuation from eeprom is configured into attenuator control register. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: Fix XPABIAS level configuration for AR9003Vasanthakumar Thiagarajan2010-11-161-6/+8
| | | | | | | | Improper configuration of 0x16288 and 0x16290 would affect transmission. Cc:stable@kernel.org Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k_hw: add eeprom templates for ar9003 family chipsetsSenthil Balasubramanian2010-11-161-2/+2336
| | | | | | | | | | We are currently using the default eeprom default and it doesn't work properly for all ar9003 family chipsets. So add eeprom templates for different versisons and select the eeprom table based on the template version programmed in the eeprom. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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