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* ath9k: Fix beacon miss handlingSujith Manoharan2014-09-111-0/+1
| | | | | | | | | | | | | | | | | | | | | The NoA duration for a GO is half the beacon interval and a concurrent context like a STA can be active only for that duration, before switching back to the GO's operating channel. Currently, when multiple beacons are missed, the dwell time for the STA context is extended to improve the chances of receiving a beacon. But the NoA is not updated and this will cause problems since the GO is offline for a period that is longer than the advertised duration. Fix this by ensuring that the NoA is updated first before extending the time slot for the STA context. Also make sure that non-periodic NoA is used for a one-time, longer absence period. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix Notice of Absence issuesSujith Manoharan2014-09-111-2/+5
| | | | | | | | | | | | | | | | | * The index has to incremented only when advertising a new NoA schedule. * Switch to non-periodic NoA when starting a scan operation and multiple channel contexts are active. * Make sure that periodic NoA is advertised again when scan ends. Since the offchannel timer moves the offchannel state to IDLE after the GO operating channel becomes active, use a flag "force_noa_update" to update the NoA contents. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix MCC scanningSujith Manoharan2014-09-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Scanning is curently broken when two channel contexts are active. For example in a P2P-GO/STA setup, the offchannel timer allows HZ / 10 to elapse before initiating a switch to the next scan channel from the current operating channel, which in this case would be the P2P-GO context. But, the channel context timer might decide to switch to the STA context when an SWBA comes early and a beacon is sent out. Since pending offchannel requests are processed in EVENT_BEACON_PREPARE, this causes inconsistent scanning. Fix this by making sure that a context switch happens before processing the pending offchannel request. This also makes sure that active channel contexts will always have higher priority than offchannel operations and the scan sequence looks like this: p2p-go, sta, p2p-go, offchannel, p2p-go, sta, p2p-go, offchannel,..... The oper-channel is p2p-go, so the STA context has to switch to p2p-go again before switching offchannel. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix interface accountingSujith Manoharan2014-09-091-1/+1
| | | | | | | | | | Currently, the interface count is maintained globally, but this causes problems in RX filter calculation. Make the interface count a per-channel-context variable to fix this. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix RX filters in channel contextsSujith Manoharan2014-09-091-1/+2
| | | | | | | | | Maintain the RX filter on a per-channel-context basis and not globally. Not doing so was resulting in incorrect filter calculation. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix ath_startrecv()Sujith Manoharan2014-09-091-1/+1
| | | | | | | | Since ath_startrecv() doesn't return an error value, cleanup the callsites. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add CTWindow supportSujith Manoharan2014-09-091-0/+2
| | | | | | | | Since CTWindow can be used for improving discoverability, fill this field in the NoA Attribute properly. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Print the event/state in ath_chanctx_eventSujith Manoharan2014-08-281-0/+3
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add new chanctx eventsSujith Manoharan2014-08-281-0/+2
| | | | | | | | This will be useful in handling addition/change of new channel contexts. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix ath_chanctx_get()Sujith Manoharan2014-08-281-4/+10
| | | | | | | | Move it inside a CONFIG_ATH9K_CHANNEL_CONTEXT ifdef since it is not needed otherwise. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move ath9k_beacon_add_noa to channel.cSujith Manoharan2014-08-281-0/+7
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix channel context variables in ath_softcSujith Manoharan2014-08-281-2/+6
| | | | | | | | chanctx_work and next_chan are required only when CONFIG_ATH9K_CHANNEL_CONTEXT is enabled. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix 'offchannel' in ath_softcSujith Manoharan2014-08-281-1/+1
| | | | | | | | | | | Finally move the 'offchannel' instance in ath_softc inside a CONFIG_ATH9K_CHANNEL_CONTEXT cage. The offchannel usage in ath9k_calculate_iter_data() is closed off with an ifdef for now, since the state/opmode calculation is common for both the channel context mode and the normal mode. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Use ath_chanctx_check_active properlySujith Manoharan2014-08-281-2/+5
| | | | | | | | ath_chanctx_check_active() is required only when channel contexts are used. Make sure that it is not called in normal usage. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add ath9k_offchannel_initSujith Manoharan2014-08-281-0/+4
| | | | | | | | This patch adds a routine to setup the offchannel instance in ath_softc. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add ath9k_chanctx_wake_queuesSujith Manoharan2014-08-281-0/+4
| | | | | | | | Introduce a function that handles queues in channel context mode. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add wrappers for beacon eventsSujith Manoharan2014-08-281-1/+13
| | | | | | | | Using these wrappers allows us to move the 'sched' variable in ath_softc inside CONFIG_ATH9K_CHANNEL_CONTEXT. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix function declarationsSujith Manoharan2014-08-281-3/+3
| | | | | | | | These routines are required only when CONFIG_ATH9K_CHANNEL_CONTEXT is enabled. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix channel context eventsSujith Manoharan2014-08-281-2/+7
| | | | | | | | | | | Check if channel context usage is enabled before calling ath_chanctx_event() from various parts of the driver. Also, make sure that ath_chanctx_event() is compiled only when CONFIG_ATH9K_CHANNEL_CONTEXT is enabled. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Make ath_chanctx_switch staticSujith Manoharan2014-08-281-2/+0
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Make ath_chanctx_get_oper_chan staticSujith Manoharan2014-08-281-2/+0
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Make ath_chanctx_offchan_switch staticSujith Manoharan2014-08-281-2/+0
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Exclude more functionsSujith Manoharan2014-08-281-1/+0
| | | | | | | | | | | Use CONFIG_ATH9K_CHANNEL_CONTEXT to exclude more functions: ath_offchannel_channel_change() ath_scan_channel_start() ath_scan_send_probe() Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Cleanup mgd_prepare_tx callbackSujith Manoharan2014-08-281-2/+2
| | | | | | | | | Rename the callback from ath9k_chanctx_force_active() to ath9k_mgd_prepare_tx(). Also, move it to main.c and group it with the other callbacks. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Make ath_chanctx_work staticSujith Manoharan2014-08-281-1/+0
| | | | | | | | Also compile it conditionally based on CONFIG_ATH9K_CHANNEL_CONTEXT. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add a routine to tear down channel contextsSujith Manoharan2014-08-281-0/+4
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add a routine for initializing channel contextsSujith Manoharan2014-08-281-2/+4
| | | | | | | | Setup the offchannel/sched timers and the chanctx work inside the new function. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Isolate ath9k_use_chanctx module parameterSujith Manoharan2014-08-281-1/+9
| | | | | | | | | | | This patch ensures that the module parameter "use_chanctx" is visible only when CONFIG_ATH9K_CHANNEL_CONTEXT is selected. Also register the channel context callbacks with mac80211 only when it is explicitly enabled and compile them out of the driver when CONFIG_ATH9K_CHANNEL_CONTEXT is not selected. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Isolate P2P powersave routinesSujith Manoharan2014-08-281-3/+35
| | | | | | | | Use CONFIG_ATH9K_CHANNEL_CONTEXT to conditionally compile P2P-PS code. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move P2P functions to channel.cSujith Manoharan2014-08-281-0/+1
| | | | | Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move channel operations to channel.cSujith Manoharan2014-08-281-0/+3
| | | | | | | This reduces clutter in main.c Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: fix pending tx frames accountingFelix Fietkau2014-07-181-1/+2
| | | | | | | | | | | | | | | Packets originally buffered for the regular hardware tx queues can end up being transmitted through the U-APSD queue (via PS-Poll or U-APSD). When packets are dropped due to retransmit failures, the pending frames counter is not always updated properly. Fix this by keeping track of the queue that a frame was accounted for in the ath_frame_info struct, and using that on completion to decide whether the counter should be updated. This fixes some spurious transmit queue hangs. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: use separate HW queue for each channel contextRajkumar Manoharan2014-06-191-0/+1
| | | | | | | | | Use seperate tx queue for each AC in each channel context and expose these information to mac80211 to avoid stopping one channel context leads to stopping the entire traffic for that AC even on other contexts. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add recovery mechanism for hw TSF timerFelix Fietkau2014-06-191-0/+4
| | | | | | | | | | Configure the TSF based hardware timer for a channel switch. Also set up backup software timer, in case the gen timer fails. This could be caused by a hardware reset. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Handle beacon miss on multi channel contextFelix Fietkau2014-06-191-0/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add periodic NoA supportFelix Fietkau2014-06-191-0/+3
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add multi-channel scheduling supportFelix Fietkau2014-06-191-0/+5
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Implement mgd_prepare_txFelix Fietkau2014-06-191-0/+3
| | | | | Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Adjust AP beacon tsf based on station contextFelix Fietkau2014-06-191-0/+2
| | | | | | | | | | In multi channel context (AP + STA case), adjust the TSF time of the AP chanctx to keep its beacons at half beacon interval offset relative to the STA chanctx. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Add p2p go NoA attributeFelix Fietkau2014-06-191-0/+7
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Store current offchannel durationRajkumar Manoharan2014-06-191-0/+1
| | | | | | | Update current offchannel duration during scan or roc request. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: switch channel context for beaconingFelix Fietkau2014-06-191-0/+25
| | | | | | | | | Add a basic state machine for switch channel context for beacon transmission. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Summarize hw state per channel contextRajkumar Manoharan2014-06-191-3/+10
| | | | | | | | | | Group and set hw state (opmode, primary_sta, beacon conf) per channel context instead of whole list of vifs. This would allow each channel context to run in different mode (STA/AP). Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move beacon config to channel contextRajkumar Manoharan2014-06-191-1/+1
| | | | | Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: save tsf in channel contextFelix Fietkau2014-06-191-0/+3
| | | | | | | | Save TSF in channel context for multiple operating channels. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move caldata into channel contextFelix Fietkau2014-06-191-2/+2
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fetch appropriate operating channel contextRajkumar Manoharan2014-06-191-1/+6
| | | | | | | | Retrieve appropriate operating channel context while switching between operating and off channels. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Implement channel context opsFelix Fietkau2014-06-191-0/+7
| | | | | | | | | Add channel context operations (add, remove, change, assign and unassign) to enable support for multiple channels. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Implement remain-on-channal supportFelix Fietkau2014-06-191-0/+6
| | | | | | | | | Add remain on channel support in order to enable multi-channel concurrency. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Implement hw_scan supportFelix Fietkau2014-06-191-0/+24
| | | | | | | | Implement hw_scan support for enabling multi-channel cuncurrency. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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