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path: root/drivers/net/wireless/ath/ath9k/recv.c
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2013-09-27ath9k: fix rx descriptor related race conditionFelix Fietkau1-4/+13
commit e96542e55a2aacf4bdeccfe2f17b77c4895b4df2 upstream. Similar to a race condition that exists in the tx path, the hardware might re-read the 'next' pointer of a descriptor of the last completed frame. This only affects non-EDMA (pre-AR93xx) devices. To deal with this race, defer clearing and re-linking a completed rx descriptor until the next one has been processed. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-04ath9k: do not link receive buffers during flushFelix Fietkau1-4/+6
commit a3dc48e82bb146ef11cf75676c8410c1df29b0c4 upstream. On AR9300 the rx FIFO needs to be empty during reset to ensure that no further DMA activity is generated, otherwise it might lead to memory corruption issues. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-14ath9k: fix decrypt_error initialization in ath_rx_tasklet()Lorenzo Bianconi1-1/+1
commit e1352fde5682ab1bdd2a9e5d75c22d1fe210ef77 upstream. ath_rx_tasklet() calls ath9k_rx_skb_preprocess() and ath9k_rx_skb_postprocess() in a loop over the received frames. The decrypt_error flag is initialized to false just outside ath_rx_tasklet() loop. ath9k_rx_accept(), called by ath9k_rx_skb_preprocess(), only sets decrypt_error to true and never to false. Then ath_rx_tasklet() calls ath9k_rx_skb_postprocess() and passes decrypt_error to it. So, after a decryption error, in ath9k_rx_skb_postprocess(), we can have a leftover value from another processed frame. In that case, the frame will not be marked with RX_FLAG_DECRYPTED even if it is decrypted correctly. When using CCMP encryption this issue can lead to connection stuck because of CCMP PN corruption and a waste of CPU time since mac80211 tries to decrypt an already deciphered frame with ieee80211_aes_ccm_decrypt. Fix the issue initializing decrypt_error flag at the begging of the ath_rx_tasklet() loop. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: fix panic caused by returning a descriptor we have queued for reuseTom Hughes1-2/+2
commit 6bb51c70cabaadddc54a6454844eceba91a56083 upstream. Commit 3a2923e83c introduced a bug when a corrupt descriptor is encountered - although the following descriptor is discarded and returned to the queue for reuse the associated frame is also returned for processing. This leads to a panic: BUG: unable to handle kernel NULL pointer dereference at 000000000000003a IP: [<ffffffffa02599a5>] ath_rx_tasklet+0x165/0x1b00 [ath9k] Call Trace: <IRQ> [<ffffffff812d7fa0>] ? map_single+0x60/0x60 [<ffffffffa028f044>] ? ath9k_ioread32+0x34/0x90 [ath9k] [<ffffffffa0292eec>] athk9k_tasklet+0xdc/0x160 [ath9k] [<ffffffff8105e133>] tasklet_action+0x63/0xd0 [<ffffffff8105dbc0>] __do_softirq+0xc0/0x1e0 [<ffffffff8101a873>] ? native_sched_clock+0x13/0x80 [<ffffffff815f9d5c>] call_softirq+0x1c/0x30 [<ffffffff810151f5>] do_softirq+0x75/0xb0 [<ffffffff8105df95>] irq_exit+0xb5/0xc0 [<ffffffff815fa5b3>] do_IRQ+0x63/0xe0 [<ffffffff815f0cea>] common_interrupt+0x6a/0x6a <EOI> [<ffffffff8131840a>] ? intel_idle+0xea/0x150 [<ffffffff813183eb>] ? intel_idle+0xcb/0x150 [<ffffffff814a1db9>] cpuidle_enter+0x19/0x20 [<ffffffff814a23d9>] cpuidle_idle_call+0xa9/0x240 [<ffffffff8101c4bf>] cpu_idle+0xaf/0x120 [<ffffffff815cda8e>] rest_init+0x72/0x74 [<ffffffff81cf4c1a>] start_kernel+0x3b7/0x3c4 [<ffffffff81cf4662>] ? repair_env_string+0x5e/0x5e [<ffffffff81cf4346>] x86_64_start_reservations+0x131/0x135 [<ffffffff81cf444a>] x86_64_start_kernel+0x100/0x10f Making sure bf is cleared to NULL in this case restores the old behaviour. Signed-off-by: Tom Hughes <tom@compton.nu> Signed-off-by: John W. Linville <linville@tuxdriver.com> Cc: Josh Boyer <jwboyer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: fix dynamic WEP related regressionFelix Fietkau1-1/+2
commit bed3d9c0b71f9afbfec905cb6db3b9f16be29d4d upstream. commit 7a532fe7131216a02c81a6c1b1f8632da1195a58 ath9k_hw: fix interpretation of the rx KeyMiss flag This commit used the rx key miss indication to detect packets that were passed from the hardware without being decrypted, however it seems that this bit is not only undefined in the static WEP case, but also for dynamically allocated WEP keys. This caused a regression when using WEP-LEAP. This patch fixes the regression by keeping track of which key indexes refer to CCMP keys and only using the key miss indication for those. Reported-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-26ath9k: fix a memory leak in ath_rx_tasklet()Eric Dumazet1-2/+2
commit 0d95521ea7 (ath9k: use split rx buffers to get rid of order-1 skb allocations) added in memory leak in error path. sc->rx.frag should be cleared after the pskb_expand_head() call, or else we jump to requeue_drop_frag and leak an skb. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jouni Malinen <jouni@qca.qualcomm.com> Cc: Felix Fietkau <nbd@openwrt.org> Cc: John W. Linville <linville@tuxdriver.com> Cc: Trond Wuellner <trond@chromium.org> Cc: Grant Grundler <grundler@chromium.org> Cc: Paul Stewart <pstew@chromium.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-12ath9k: Fix mactime from being clobbered in rx_statusAshok Nagarajan1-2/+2
mactime was being overwritten by the function ath9k_rx_skb_preprocess. Fixed by memsetting rx_status in ath_rx_tasklet. Signed-off-by: Ashok Nagarajan <ashok@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-07ath9k: fix signal strength reporting issuesFelix Fietkau1-5/+7
On A-MPDU frames, the hardware only reports valid signal strength data for the last subframe. The driver also mangled rx_stats->rs_rssi using the ATH_EP_RND macro in a way that may make sense for ANI, but definitely not for reporting to mac80211. This patch changes the code to calculate the signal strength from the rssi directly instead of taking the average value, and flag everything but the last subframe in an A-MPDU to tell mac80211 to ignore the signal strength entirely, fixing signal strength fluctuation issues reported by various users. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-07ath9k: get rid of double queueing of rx frames on EDMAFelix Fietkau1-23/+22
Process rx status directly instead of separating the completion test from the actual rx status processing. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06ath9k: make use of list_for_each_entry_safeMohammed Shafi Shajakhan1-7/+2
this does the same thing as the previous code Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-06ath9k: fix a WEP crypto related regressionFelix Fietkau1-0/+8
commit b4a82a0 "ath9k_hw: fix interpretation of the rx KeyMiss flag" fixed the interpretation of the KeyMiss flag for keycache based lookups, however WEP encryption uses a static index, so KeyMiss is always asserted for it, even though frames are decrypted properly. Fix this by clearing the ATH9K_RXERR_KEYMISS flag if no keycache based lookup was performed. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@vger.kernel.org Reported-by: Laurent Bonnans <bonnans.l@gmail.com> Reported-by: Jurica Vukadin <u.ra604@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-19ath: Convert ath_dbg(bar, ATH_DBG_<FOO>, to ath_dbg(bar, FOOJoe Perches1-9/+8
Add ATH_DBG_ to macros to shorten the uses and reduce the line count. Coalesce ath_dbg formats. Add missing spaces to coalesced formats. Add missing newline terminations to ath_dbg formats. Align ath_dbg arguments where appropriate. Standardize ath_dbg formats without periods. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-16ath9k: validate for non-zero BSSIDMohammed Shafi Shajakhan1-0/+1
before concluding that the recieved beacon is for us, let us make sure that the BSSID is non-zero. when I configured ad-hoc mode as creator and left it for some time without joining I found we recieved few frames whose BSSID is zero, which we concluded wrongly as 'my_beacons' Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-01ath9k: minor cleanupMohammed Shafi Shajakhan1-1/+0
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-01ath9k: change the default antenna settings based on diversityMohammed Shafi Shajakhan1-9/+14
change the AR_DEF_ANTENNA register settings i.e setting default antenna setting only for antenna diversity enabled chipsets. no point in doing this for MIMO chipsets Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-22ath9k: trivial: reorder rx_tasklet processingZefir Kurtisi1-5/+5
DFS events are reported as PHY errors and need to be processed with a correct timestamp set before ath9k_skb_preprocess() is called and the frame is possibly dropped. This patch puts the rxs->mactime calculation before the skb is preprocessed to prepare for DFS event reporting. Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-12ath9k: only send FCS-fail packets to mac80211 if requestedFelix Fietkau1-1/+2
Prevents lots of broken frames from showing up on monitor interfaces by default. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-12ath9k_hw: fix a regression in key miss handlingFelix Fietkau1-13/+14
The commit "ath9k_hw: Fix incorrect key_miss handling" changed the code to only report key miss errors if a MIC error wasn't reported. When checking the flags in that order in the MAC code, it might miss some real events, because the value of the MIC error flag is undefined under some conditions. The primary issue addressed by the previous commit is making sure that MIC errors are properly reported on the STA side. This can be fixed in a better way by adding a separate rx status flag for key miss and ignoring it for multicast frames. This fix slightly improves stability in AP mode on some older hardware, like AR9132. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-12ath9k_hw: make ath9k_hw_set_interrupts use ah->imask by defaultFelix Fietkau1-1/+1
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-12ath9k: disable unnecessary PHY error reportingFelix Fietkau1-4/+1
PHY errors relevant for ANI are always tracked by hardware counters, the bits that allow them to pass through the rx filter are independent of that. Enabling PHY errors in the rx filter often creates lots of useless DMA traffic and might be responsible for some of the rx dma stop failure warnings. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30ath9k: Remove redundant my beacon check at ath_rx_ps_beaconRajkumar Manoharan1-17/+6
Make use of the rx status's is_mybeacon in order to avoid redundant memcmp. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-28Merge branch 'master' of git://git.infradead.org/users/linville/wirelessJohn W. Linville1-1/+9
Conflicts: drivers/net/wireless/iwlwifi/iwl-scan.c net/wireless/nl80211.c
2011-09-26ath9k: Fix a dma warning/memory leakMohammed Shafi Shajakhan1-1/+9
proper dma_unmapping and freeing of skb's has to be done in the rx cleanup for EDMA chipsets when the device is unloaded and this also seems to address the following warning which shows up occasionally when the device is unloaded Call Trace: [<c0148cd2>] warn_slowpath_common+0x72/0xa0 [<c03b669c>] ? dma_debug_device_change+0x19c/0x200 [<c03b669c>] ? dma_debug_device_change+0x19c/0x200 [<c0148da3>] warn_slowpath_fmt+0x33/0x40 [<c03b669c>] dma_debug_device_change+0x19c/0x200 [<c0657f12>] notifier_call_chain+0x82/0xb0 [<c0171370>] __blocking_notifier_call_chain+0x60/0x90 [<c01713bf>] blocking_notifier_call_chain+0x1f/0x30 [<c044f594>] __device_release_driver+0xa4/0xc0 [<c044f647>] driver_detach+0x97/0xa0 [<c044e65c>] bus_remove_driver+0x6c/0xe0 [<c029af0b>] ? sysfs_addrm_finish+0x4b/0x60 [<c0450109>] driver_unregister+0x49/0x80 [<c0299f54>] ? sysfs_remove_file+0x14/0x20 [<c03c3ab2>] pci_unregister_driver+0x32/0x80 [<f92c2162>] ath_pci_exit+0x12/0x20 [ath9k] [<f92c8467>] ath9k_exit+0x17/0x36 [ath9k] [<c06523cd>] ? mutex_unlock+0xd/0x10 [<c018e27f>] sys_delete_module+0x13f/0x200 [<c02139bb>] ? sys_munmap+0x4b/0x60 [<c06547c5>] ? restore_all+0xf/0xf [<c0657a20>] ? spurious_fault+0xe0/0xe0 [<c01832f4>] ? trace_hardirqs_on_caller+0xf4/0x180 [<c065b863>] sysenter_do_call+0x12/0x38 ---[ end trace 16e1c1521c06bcf9 ]--- Mapped at: [<c03b7938>] debug_dma_map_page+0x48/0x120 [<f92ba3e8>] ath_rx_init+0x3f8/0x4b0 [ath9k] [<f92b5ae4>] ath9k_init_device+0x4c4/0x7b0 [ath9k] [<f92c2813>] ath_pci_probe+0x263/0x330 [ath9k] Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-17ath9k: ensure that rx is not enabled during a resetFelix Fietkau1-2/+3
During a reset, rx buffers are flushed after rx has been disabled. To avoid race conditions, rx needs to stay disabled during the reset, so avoid any calls to ath9k_hw_rxena in that case. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-14ath9k: implement .get_antenna and .set_antennaFelix Fietkau1-1/+1
On MIMO chips this can be used to enable/disable hardware chains, ensuring that the MCS information is updated accordingly. On non-MIMO chips with rx diversity (e.g. 9285), this configures the rx input antenna. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-29ath9k: Add debugfs support for mac/baseband samplesRajkumar Manoharan1-14/+8
This patch keep track of number of samples that includes DMA debugs registers, PCU observe, CR, channel noise, cycle conters, noisefloor history buffer and last N number of tx and rx descriptor status. These samples are grouped in table manner which dumping in debgufs. Debugfs file location: <debugfs_mnt>/ieee80211/phy#/ath9k/samples Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-29ath9k: use appropriate debug maskMohammed Shafi Shajakhan1-1/+1
in the Rx path of the driver it would be better to use ATH_DBG_ANY rather than ATH_DBG_XMIT for printing debug messages Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-24ath9k: fix MGMT packets when using TKIPBill Jordan1-1/+2
Prevent 8 bytes from being truncated from MGMT packets when using TKIP. Signed-off-by: Bill Jordan <bjordan@rajant.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-24ath9k: Remove unused argument tsf from ath9k_hw_rxprocdescRajkumar Manoharan1-2/+2
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-24ath9k: Re-enable RXOEL interrupt after processing rx buffersRajkumar Manoharan1-0/+5
Once RXEOL was disabled, it never be enabled again. This patch re-enables rxeol at the end of rx tasklet. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-10ath9k: remove obselete commentsMohammed Shafi Shajakhan1-5/+0
the comments are obselete as the virtual wiphy support was removed from the driver Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09ath9k: Use atomic reference count for interrupt opsRajkumar Manoharan1-1/+0
Let us enable/disable interrupts based on reference count. By doing this we can ensure that interrupts are never be enabled in the middle of tasklet processing. Instead of addressing corner cases like "ath9k: avoid enabling interrupts while processing rx", this approach handles it in generic manner. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09ath9k: use the new channel noise value for signal strength and survey infoFelix Fietkau1-1/+3
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-23Merge branch 'master' of ↵John W. Linville1-21/+32
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-07-15ath9k: improve reliability of MIC error detectionFelix Fietkau1-21/+32
For unicast the hardware sometimes reports MIC errors even though the frame that it received actually contains a valid MIC - on some chips this can happen frequently enough to trigger TKIP countermeasures. Fix this issue by not reporting MIC errors for unicast frames with a valid key, letting mac80211 validate the MIC instead. Additionally, strip the MIC for all frames that the hardware considers valid to avoid wasting CPU cycles re-validating it. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-24Merge branch 'master' of ↵John W. Linville1-32/+114
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/rtlwifi/pci.c include/linux/netlink.h
2011-06-23ath9k: add fast_div_bias configuration for diversity group 1Gabor Juhos1-0/+83
The patch adds the missing configuration code for diversity group 1. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-23ath9k: remove superfluous parenthesesGabor Juhos1-32/+30
Also remove two empty lines. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-23ath9k: add a missing case statement to ath_ant_div_comb_alt_checkGabor Juhos1-0/+1
The 'ar9003_hw_antdiv_comb_conf_get' function sets div_group to 2 however that value is not used in 'ath_ant_div_comb_alt_check'. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-22net: remove mm.h inclusion from netdevice.hAlexey Dobriyan1-0/+1
Remove linux/mm.h inclusion from netdevice.h -- it's unused (I've checked manually). To prevent mm.h inclusion via other channels also extract "enum dma_data_direction" definition into separate header. This tiny piece is what gluing netdevice.h with mm.h via "netdevice.h => dmaengine.h => dma-mapping.h => scatterlist.h => mm.h". Removal of mm.h from scatterlist.h was tried and was found not feasible on most archs, so the link was cutoff earlier. Hope people are OK with tiny include file. Note, that mm_types.h is still dragged in, but it is a separate story. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19ath9k: Drag the driver to the year 2011Sujith Manoharan1-1/+1
The Times They Are a-Changin'. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-16ath9k: make sure main_rssi is positiveMohammed Shafi Shajakhan1-2/+2
some times the rssi control descriptor for the main antenna may be negative like that of alternate antenna, hence before incrementing packet counts/rssi of main/alternate antenna make sure both main_rssi and alt_rssi are positive only. this avoids wrong selection of antenna due to diversity Cc: Gabriel Tseng <Gabriel.Tseng@Atheros.com> Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com> Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-16ath9k: configure fast_div_bias based on diversity groupMohammed Shafi Shajakhan1-43/+131
configure fast diversity bias based on the antenna diversity group and based on main/alt LNA configurations. also configure main antenna and alternate antenna to gain-table 0 for diversity group 2(AR9485) Cc: Gabriel Tseng <Gabriel.Tseng@Atheros.com> Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com> Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-16ath9k: Implement an API to swap main/ALT LNA'sMohammed Shafi Shajakhan1-1/+30
for the diversity group 2(AR9485) we swap the LNA's of main/ALT antenna based on alternate antenna's rssi average in comparision with main antenna's rssi, while for AR9285(antenna diversity group 0)we still follow the older method of looking at the packet count in alternate antenna Cc: Gabriel Tseng <Gabriel.Tseng@Atheros.com> Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com> Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-16ath9k_hw: define antenna diversity groupMohammed Shafi Shajakhan1-1/+1
AR9285 belongs to diversity group 0 and AR9485 belongs to diversity group 2. Based on the diversity group we configure certain antenna diversity paramaters such as lna1_lna2_delta and fast diversity bias values. For AR9485 we have some gain table parameter which selects the gain table 0/1 for main and alternate antenna Cc: Gabriel Tseng <Gabriel.Tseng@Atheros.com> Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com> Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-10ath9k: Fix rssi update in ad-hoc modeRajkumar Manoharan1-1/+2
The average beacon rssi which will be used by ani is not updated in adhoc mode. Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-10ath9k: avoid enabling interrupts while processing rxRajkumar Manoharan1-0/+1
The assumsion is that while processing ath9k tasklet, interrupts were already disabled and it will be enabled at the completion of ath9k tasklet. But whenever TSFOOR is raised, the driver configures the beacon timers after having received a beacon frame from the AP which inturn enables the interrupts. Cc: stable@kernel.org Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-26Merge branch 'master' of ↵John W. Linville1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-04-25ath9k: remove the unlikely check for autosleepMohammed Shafi Shajakhan1-1/+1
newer chipsets support auto sleep feature, so remove the unlikely check which does not seems to help anything Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-25ath9k: Fix warnings from -Wunused-but-set-variableSujith Manoharan1-2/+1
Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-15 12:58:02 +0300