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* ath9k: Manipulate and report the correct RSSISenthil Balasubramanian2009-07-241-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RSSI reported by the RX descriptor requires little manipulation. Manipulate and report the correct RSSI to the stack. This will fix the improper signal levels reported by iwconfig iw dev wlanX station dump. Also the Link Quality reported seems to be varying (falls to zero also sometimes) when iperf is run from STA to AP. Also use the default noise floor for now as the one reported during the caliberation seems to be wrong. The Signal and Link Quality before this patch (taken while TX is in progress from STA to AP) 09:59:13.285428037 Link Quality=29/70 Signal level=-81 dBm 09:59:13.410660084 Link Quality=20/70 Signal level=-90 dBm 09:59:13.586864392 Link Quality=21/70 Signal level=-89 dBm 09:59:13.710296281 Link Quality=21/70 Signal level=-89 dBm 09:59:13.821683064 Link Quality=25/70 Signal level=-85 dBm 09:59:13.933402989 Link Quality=24/70 Signal level=-86 dBm 09:59:14.045839276 Link Quality=26/70 Signal level=-84 dBm 09:59:14.193926673 Link Quality=23/70 Signal level=-87 dBm 09:59:14.306230262 Link Quality=31/70 Signal level=-79 dBm 09:59:14.419459667 Link Quality=26/70 Signal level=-84 dBm 09:59:14.530711167 Link Quality=37/70 Signal level=-73 dBm 09:59:14.642593962 Link Quality=29/70 Signal level=-81 dBm 09:59:14.754361169 Link Quality=21/70 Signal level=-89 dBm 09:59:14.866217355 Link Quality=21/70 Signal level=-89 dBm 09:59:14.976963623 Link Quality=28/70 Signal level=-82 dBm 09:59:15.089149809 Link Quality=26/70 Signal level=-84 dBm 09:59:15.205039887 Link Quality=27/70 Signal level=-83 dBm 09:59:15.316368003 Link Quality=23/70 Signal level=-87 dBm 09:59:15.427684036 Link Quality=36/70 Signal level=-74 dBm 09:59:15.539756380 Link Quality=21/70 Signal level=-89 dBm 09:59:15.650549093 Link Quality=22/70 Signal level=-88 dBm 09:59:15.761171672 Link Quality=32/70 Signal level=-78 dBm 09:59:15.872793750 Link Quality=23/70 Signal level=-87 dBm 09:59:15.984421694 Link Quality=22/70 Signal level=-88 dBm 09:59:16.097315093 Link Quality=21/70 Signal level=-89 dBm The link quality and signal level after this patch (take while TX is in progress from STA to AP) 17:21:25.627848091 Link Quality=65/70 Signal level=-45 dBm 17:21:25.762805607 Link Quality=65/70 Signal level=-45 dBm 17:21:25.875521888 Link Quality=66/70 Signal level=-44 dBm 17:21:25.987468448 Link Quality=66/70 Signal level=-44 dBm 17:21:26.100628151 Link Quality=66/70 Signal level=-44 dBm 17:21:26.213129671 Link Quality=66/70 Signal level=-44 dBm 17:21:26.324923070 Link Quality=65/70 Signal level=-45 dBm 17:21:26.436831357 Link Quality=65/70 Signal level=-45 dBm 17:21:26.610356973 Link Quality=65/70 Signal level=-45 dBm 17:21:26.723340047 Link Quality=65/70 Signal level=-45 dBm 17:21:26.835715293 Link Quality=64/70 Signal level=-46 dBm 17:21:26.949542748 Link Quality=64/70 Signal level=-46 dBm 17:21:27.062261613 Link Quality=65/70 Signal level=-45 dBm 17:21:27.174511563 Link Quality=64/70 Signal level=-46 dBm 17:21:27.287616232 Link Quality=64/70 Signal level=-46 dBm 17:21:27.400598119 Link Quality=64/70 Signal level=-46 dBm 17:21:27.511381404 Link Quality=64/70 Signal level=-46 dBm 17:21:27.624530421 Link Quality=65/70 Signal level=-45 dBm 17:21:27.737807109 Link Quality=64/70 Signal level=-46 dBm 17:21:27.850861352 Link Quality=65/70 Signal level=-45 dBm 17:21:27.963369436 Link Quality=64/70 Signal level=-46 dBm 17:21:28.076582289 Link Quality=64/70 Signal level=-46 dBm Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: cleanup try count for MRR in rate controlLuis R. Rodriguez2009-07-241-1/+0
| | | | | | | | | | | | | | | | | | | This has no functional change and just cleans up the code to be more legible and removes a useless variable for Multi Rate Retry. For regular frames we use 2 retries for MRR segments [0-2]. For the last MRR segment [3] we use 4. MRR[0] = 2 MRR[1] = 2 MRR[2] = 2 MRR[3] = 4 Cc: Derek Smithies <derek@indranet.co.nz> Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: race condition in SCANNING state check during ANI calibrationSenthil Balasubramanian2009-07-101-0/+1
| | | | | | | | | ANI calibration shouldn't be done when we are not on our home channel. This is already verified. However, it is racy. Fix this by proper spin locks. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove unnecessary count for addba attemptVasanthakumar Thiagarajan2009-07-101-1/+0
| | | | | | | | mac80211 already has one to keep track of number of failure addba attempts. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: prevent sleeping while we are waiting for CABGabor Juhos2009-06-151-0/+1
| | | | | | | | We have to remain awake if the SC_OP_WAIT_FOR_CAB flag is set. Changes-licensed-under: ISC Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: port to cfg80211 rfkillJohannes Berg2009-06-151-9/+0
| | | | | | | | | | | | | | | | | | | | | | This ports the ath9k rfkill code to the new API offered by cfg80211 and thus removes a lot of useless stuff. ("With this series a kernel panic, which is a regression, during module unload disappears." -- Vasanthakumar Thiagarajan <vasanth@atheros.com> Other patches in the series: ath9k: Add helper to get ath9k specific current channel ath9k: Make sure we have current channel in ah_curchan before rf disable/enable -- JWL) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Luis Rodriguez <mcgrof@gmail.com> Tested-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rfkill: rewriteJohannes Berg2009-06-031-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Update Beacon timers based on timestamp from the APJouni Malinen2009-05-221-0/+1
| | | | | | | | | | | | | Some APs seem to drift away from the expected TBTT (timestamp % beacon_int_in_usec differs quite a bit from zero) which can result in us waking up way too early to receive a Beacon frame. In order to work around this, re-configure the Beacon timers after having received a Beacon frame from the AP (i.e., when we know the offset between the expected TBTT and the actual time the AP is sending out the Beacon frame). Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Wake up for TX in mac80211 timeout=0 sleep modeJouni Malinen2009-05-201-1/+5
| | | | | | | | | | When using timeout=0 (PS-Poll) with mac80211, the driver will need to wake up for TX requests and remain awake until the TX has been completed (ACK received or timeout) or until the buffer frame(s) have been received (in case the TX is for a PS-Poll frame). Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: cleanup beacon parameters configurationVasanthakumar Thiagarajan2009-05-201-0/+1
| | | | | | | | | | This patch configures the beacon timers with beacon interval and beacon period passed through vif.bss_conf. Also cache the currecnt beacon configuration which will be used to configure the beacon timers when the driver triggers it after reset. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix PS mode operation to receive buffered broadcast/multicast framesJouni Malinen2009-05-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | The previous implementation was moving back to NETWORK SLEEP state immediately after receiving a Beacon frame. This means that we are unlikely to receive all the buffered broadcast/multicast frames that would be sent after DTIM Beacon frames. Fix this by parsing the Beacon frame and remaining awake, if needed, to receive the buffered broadcast/multicast frames. The last buffered frame will trigger the move back into NETWORK SLEEP state. If the last broadcast/multicast frame is not received properly (or if the AP fails to send it), the next Beacon frame will work as a backup trigger for returning into NETWORK SLEEP. A new debug type, PS (debug=0x800 module parameter), is added to make it easier to debug potential power save issues in the future. Currently, this is only used for the Beacon frame and buffered broadcast/multicast receiving. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: make private driver rate tables constLuis R. Rodriguez2009-05-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | On x86 this allows us to do the following small savings: shave off 23 % off of the module's data, and shave off 6 % off of the module's text. We save 456 bytes, for those counting. $ size ath9k.ko text data bss dec hex filename 250794 3628 1600 256022 3e816 ath9k.ko $ size ath9k-old.ko text data bss dec hex filename 239114 15308 1600 256022 3e816 ath9k-old.ko $ du -b ath9k.ko 4034244 ath9k.ko $ du -b ath9k-old.ko 4033788 ath9k-old.ko Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: uninline ath9k_io{read,write}32 routinesGabor Juhos2009-05-061-31/+2
| | | | | | | | | | The spin_lock handling uses lots of instructions on some archs. With this patch the size of the ath9k module will be significantly smaller. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: clean up beacon interval settingsJohannes Berg2009-05-061-0/+2
| | | | | | | | | | | | | | | | | | | | We currently have two beacon interval configuration knobs: hw.conf.beacon_int and vif.bss_info.beacon_int. This is rather confusing, even though the former is used when we beacon ourselves and the latter when we are associated to an AP. This just deprecates the hw.conf.beacon_int setting in favour of always using vif.bss_info.beacon_int. Since it touches all the beaconing IBSS code anyway, we can also add support for the cfg80211 IBSS beacon interval configuration easily. NOTE: The hw.conf.beacon_int setting is retained for now due to drivers still using it -- I couldn't untangle all drivers, some are updated in this patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* atheros: put atheros wireless drivers into ath/Luis R. Rodriguez2009-04-221-0/+730
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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