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2011-06-07mwifiex: remove list traversal in mwifiex_num_pkts_in_txqYogesh Ashok Powar
Instead of counting the number of packets in txq for particular RA list before AMSDU creation, maintain a counter which will keep track of the same. This will reduce some MIPS while generating AMSDU traffic as we only have to check the counter instead of traversing through skb list. Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-07iwlwifi: remove unecessary if statementGreg Dietsche
the code always returns ret regardless, so if(ret) check is unecessary. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-07iwlagn: refactor iwlagn_mac_channel_switchStanislaw Gruszka
Use less indentions and remove uneeded irq-save flags. 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>
2011-06-07wl12xx: Stop BA session event from deviceShahar Levi
Adding new event that close RX BA session in case of periodic BT activity limiting WLAN activity. Signed-off-by: Shahar Levi <shahar_levi@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-07mac80211: Stop BA session event from deviceShahar Levi
Some devices support BT/WLAN co-existence algorigthms. In order not to harm the system performance and user experience, the device requests not to allow any RX BA session and tear down existing RX BA sessions based on system constraints such as periodic BT activity that needs to limit WLAN activity (eg.SCO or A2DP). In such cases, the intention is to limit the duration of the RX PPDU and therefore prevent the peer device to use A-MPDU aggregation. Adding ieee80211_stop_rx_ba_session() callback that can be used by the driver to stop existing BA sessions. Signed-off-by: Shahar Levi <shahar_levi@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-07Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-06-06iwl4965: set tx power after rxon_assocStanislaw Gruszka
Setting tx power can be deferred during scan or changing channel. If after that correct tx power settings will not be sent to device, we can observe transmission problems and timeouts. Force to send tx power settings also after partial rxon change, to assure device always be configured with up-to-date settings. Resolves: https://bugzilla.kernel.org/show_bug.cgi?id=36492 Cc: stable@kernel.org # 2.6.39+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-06rt2x00: fix rmmod crashStanislaw Gruszka
Avoid queue and run autowakeup_work when device is not present anymore. That prevent rmmod and device remove crash introduced by: commit 1c0bcf89d85cc97a0d9ce4cd909351a81fa4fdde Author: Ivo van Doorn <ivdoorn@gmail.com> Date: Sat Apr 30 17:18:18 2011 +0200 rt2x00: Add autowake support for USB hardware Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-06iwlagn: use cts-to-self protection on 5000 adapters seriesStanislaw Gruszka
This patch fixes 802.11n stability and performance regression we have since 2.6.35. It boost performance on my 5GHz N-only network from about 5MB/s to 8MB/s. Similar percentage boost can be observed on 2.4 GHz. These are test results of 5x downloading of approximately 700MB iso image: vanilla: 5.27 5.22 4.94 4.47 5.31 ; avr 5.0420 std 0.35110 patched: 8.07 7.95 8.06 7.99 7.96 ; avr 8.0060 std 0.055946 This was achieved with NetworkManager configured to do not perform periodical scans, by configuring constant BSSID. With periodical scans, after some time, performance downgrade to unpatched driver level, like in example below: patched: 7.40 7.61 4.28 4.37 4.80 avr 5.6920 std 1.6683 However patch still make better here, since similar test on unpatched driver make link disconnects with below messages after some time: wlan1: authenticate with 00:23:69:35:d1:3f (try 1) wlan1: authenticate with 00:23:69:35:d1:3f (try 2) wlan1: authenticate with 00:23:69:35:d1:3f (try 3) wlan1: authentication with 00:23:69:35:d1:3f timed out On 2.6.35 kernel patch helps against connection hangs with messages: iwlagn 0000:20:00.0: queue 10 stuck 3 time. Fw reload. iwlagn 0000:20:00.0: On demand firmware reload iwlagn 0000:20:00.0: Stopping AGG while state not ON or starting Cc: stable@kernel.org # 2.6.35+ 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>
2011-06-06Revert "mac80211: Skip tailroom reservation for full HW-crypto devices"John W. Linville
This reverts commit aac6af5534fade2b18682a0b9efad1a6c04c34c6. Conflicts: net/mac80211/key.c That commit has a race that causes a warning, as documented in the thread here: http://marc.info/?l=linux-wireless&m=130717684914101&w=2 Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: call commit_rxon function directlyWey-Yi Guy
No need to go though multiple levels of indirect call to send RXON command. Call it directly Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: direct call to post_scan functionWey-Yi Guy
After driver split, no need to use function "ops" for post_scan. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: move all post scan functions in one placeWey-Yi Guy
Both tx power and power save are being done after scan complete, move into post_scan function Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: set smps mode after assoc for 1000 deviceWey-Yi Guy
For some timing reason, 1000 device having problem to kick-in to aggregation without sending rxon assoc command. This is a W/A until find the real reason Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: save the latest smps modeWey-Yi Guy
When change smps mode due to bt coex, save it Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlegacy: add missing null checkGreg Dietsche
lq_sta has other null checks in this function. assuming they are correct, this additional null check should be added too. Incorporating suggestion from Gustavo Padovan. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlegacy: propagate error return valueGreg Dietsche
propogate the return value from iwl4965_get_tx_atten_grp instead of implicitly returning -EINVAL in the error case. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlegacy: return -EINVAL instead of -1Greg Dietsche
Cleanup the code to return -EINVAL instead of -1 Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlegacy: remove unecessary if statementGreg Dietsche
the code always returns ret regardless, so if(ret) check is unecessary. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlegacy: remove unreachable codeGreg Dietsche
return; at the end of the function is unecessary. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03b43: add BCMA 80211 core specific definesRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03b43: add an option to register BROKEN bcma driverRafał Miłecki
It does nothing useful yet, so it is matched as BROKEN. For now this is just an option for b43, in future we may want to make b43 support SSB or BCMA (note: or, not xor). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03bcma: read SPROM and extract MAC from itRafał Miłecki
In case of BCMA cards SPROM is located in the ChipCommon core, it is not mapped as separated host window. So far we have met only SPROMs rev 8. SPROM layout seems to be the same as for SSB buses, so we decided to share SPROM struct and some defines. For now we extract MAC address only, this can be improved of course. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03b43: do not use SSB specific flags when calling core reset functionRafał Miłecki
Luckily the only flag we use when calling core reset is GMODE one. Thanks to that we can just switch to single bool and make function calls bus generic. Tested on my BCM4312 (LP-PHY) and early tested with BCM43224. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03ath9k: show excessive-retry MPDUs in debugfsFelix Fietkau
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03lib: cordic: add library module providing cordic angle calculationArend van Spriel
The brcm80211 driver in the staging tree has a cordic function to determine cosine and sine for a given angle. Feedback received from John Linville suggested that these kind of functions should be made available to others as a library function in the kernel tree. The b43 driver also has a cordic angle calculation implemented. Cc: linux-kernel@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Dan Carpenter <error27@gmail.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Reviewed-by: Roland Vossen <rvossen@broadcom.com> Reviewed-by: Henry Ptasinski <henryp@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03lib: crc8: add new library module providing crc8 algorithmArend van Spriel
The brcm80211 driver in staging tree uses a crc8 function. Based on feedback from John Linville to move this to lib directory, the linux source has been searched. Although there is currently only one other kernel driver using this algorithm (ie. drivers/ssb) we are providing this as a library function for others to use. Cc: linux-kernel@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: Dan Carpenter <error27@gmail.com> Cc: George Spelvin <linux@horizon.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Reviewed-by: Henry Ptasinski <henryp@broadcom.com> Reviewed-by: Roland Vossen <rvossen@broadcom.com> Reviewed-by: "Franky (Zhenhui) Lin" <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Fix logic in rx_interruptMike McCormack
Should pass along packet if there's no CRC and no hardware error. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Use write barrier when assigning ownershipMike McCormack
Make sure all updates to a descriptor are flushed to memory before assigning ownship to hardware. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Assign rx buffer ownership to hardware lastMike McCormack
Ownership of an rx buffer should only be given to the hardware after all other changes are written, otherwise there's a potential race. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Don't block interrupts in spinlocksMike McCormack
Now power state transitions are not called from an interrupt context, there's no need to block interrupts. This code appears to block interrupts for too long, causing my trackpad to lose sync occasionally. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Run IPS leave work in a taskletMike McCormack
This removes the need to use IRQ safe spinlocks in many places. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Store loop index in local variableMike McCormack
_rtl_pci_rx_interrupt uses rtlpci->rx_ring[rx_queue_idx].idx a few times, so store it in a separate variable. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Remove set_rfpowerstate_inprogressMike McCormack
set_rfpowerstate_inprogress is only set and never read so remove it. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03rtlwifi: Synchronize IRQ after disabling itMike McCormack
This make sure any IRQ handlers running on other CPUs complete. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03libertas_sdio: handle spurious interruptsDaniel Drake
Commit 06e8935febe687e2a561707d4c7ca4245d261dbe adds an IRQ handling optimization for single-function SDIO cards like this one, but at the same time exposes a small hardware bug. During hardware init, an interrupt is generated with (apparently) no source. Previously, mmc threw this interrupt away, but now (due to the optimization), the mmc layer passes this onto libertas, before it is ready (and before it has enabled interrupts), causing a crash. Work around this hardware bug by registering the IRQ handler later and making it capable of handling interrupts with no cause. The change that makes the IRQ handler registration happen later actually eliminates the spurious interrupt as well. Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03mac80211: call dev_alloc_name before copying name to sdataThadeu Lima de Souza Cascardo
This partially reverts 1c5cae815d19ffe02bdfda1260949ef2b1806171, because the netdev name is copied into sdata->name, which is used for debugging messages, for example. Otherwise, we get messages like this: wlan%d: authenticated Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: Jiri Pirko <jpirko@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "John W. Linville" <linville@tuxdriver.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03iwlagn: fix channel switch lockingStanislaw Gruszka
We use priv->mutex to avoid race conditions between iwl_chswitch_done() and iwlagn_mac_channel_switch(), when marking channel switch in progress. But iwl_chswitch_done() can be called in atomic context from iwl_rx_csa() or with mutex already taken from iwlagn_commit_rxon(). These bugs were introduced by: commit 79d07325502e73508f917475bc1617b60979dd94 Author: Wey-Yi Guy <wey-yi.w.guy@intel.com> Date: Thu May 6 08:54:11 2010 -0700 iwlwifi: support channel switch offload in driver To fix remove mutex from iwl_chswitch_done() and use atomic bitops for marking channel switch pending. Also remove iwl2030_hw_channel_switch() since 2000 series adapters are 2.4GHz only devices. Cc: stable@kernel.org # 2.6.36+ 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>
2011-06-03ath5k: Disable fast channel switching by defaultNick Kossifidis
Disable fast channel change by default on AR2413/AR5413 due to some bug reports (it still works for me but it's better to be safe). Add a module parameter "fastchanswitch" in case anyone wants to enable it and play with it. Signed-off-by: Nick Kossifidis <mickflemm@gmail.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03ssb: fix PCI(e) driver regression causing oops on PCI cardsRafał Miłecki
We were incorrectly executing PCIe specific workarounds on PCI cards. This resulted in: Machine check in kernel mode. Caused by (from SRR1=149030): Transfer error ack signal Oops: Machine check, sig: 7 [#1] Reported-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-02iwlagn: fix interface combinationsJohannes Berg
My patch to advertise interface combinations worked by pure luck in the P2P case, but all other cases are broken. This is due to a dumb mistake in the code that checks what should be advertised, fix that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: change log to better represent the state of aggregation processWey-Yi Guy
Multiple A-MPDU actions will received from mac80211 while setting up the aggregation queue, change the message log to better represent the states. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: change the logging level for aggregation enable checkWey-Yi Guy
Aggregation will not enable if the traffic is lower than the threshold, this is not an error condition, so change the logging level. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: advertise interface combinationsJohannes Berg
With this, iwlwifi will advertise the limits on concurrency of virtual interfaces. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: free the ICT ISR when the request_irq failedEmmanuel Grumbach
Fix a memory leak in case request_irq fails. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlwifi: disambiguate invalid DMA index warningsDaniel Halperin
The exact same error message is used in three different functions in iwlagn. Add the function name to the error string to disambiguate where the error is coming from. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: solve sparse warningEmmanuel Grumbach
Remove local variable that was shadowing another one sta_priv hasn't changed since the beginning of the function, so don't define another pointer with the same name to the same variable Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: fix dual-mode RXONJohannes Berg
The PAN context has three states: disabled, disassociated and associated. It seems that wasn't quite as much of an issue in previous versions of the microcode, but now we really have to use all the three states properly. So add code to switch accordingly. Additionally, PAN parameters need to be sent differently and the timing for PAN RXON needs to be inbetween. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: remove un-necessary tx power opsWey-Yi Guy
All agn devices use the same tx power function, remove the ops Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01iwlagn: send tx power command if defer cause by RXON not matchWey-Yi Guy
During channge channel, tx power will not send to uCode, the tx power command should send after scan complete. but should also can send after RXON command. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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