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path: root/drivers/net/wireless/iwlwifi/mvm/mac80211.c
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* | | iwlwifi: mvm: spin off a function to start scan offloadLuciano Coelho2014-10-29
| |/ |/| | | | | | | | | | | | | | | | | The net-detect feature will require a scan offload to be started in the same way it is done now for scheduled scan. Spin a new function off of the sched_scan_start op code for reuse. Additionally, restructure the function a bit for more readability. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: ROC - bug fixes around time events and lockingMatti Gottlieb2014-10-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't add the time event to the list. We added it several times the same time event, which leads to an infinite loop when walking the list. Since we (currently) don't support more than one ROC for STA vif at a time, enforce this and don't add the time event to any list. We were also missing the locking of the mutex which led to a lockdep splat - fix that. Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: Add tx power condition to bss_info_changed_ap_ibssHaim Dreyfuss2014-10-23
|/ | | | | | | | | | The tx power should be limited from many reasons. currently, setting the tx power is available by the mvm only for station interface. Adding the tx power condition to bss_info_changed_ap_ibss make it available also for AP. Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: Refactor and fix max probe len computationAndrei Otcheretianski2014-09-21
| | | | | | | | | | | | Move iwl_mvm_max_scan_ie_len function to scan.c and fix the implementation to conform with the LMAC scan API. Since the correct implementation would leave us with unacceptably tiny probes, add a workaround which returns a larger value. In current implementation it's possible that unified_scan_lmac and unified_sched_scan_lmac would return -ENOBUFS. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: Allow schedule scan while connectedAlexander Bondar2014-09-16
| | | | | | | | | | In the past when schedule scan was started while connected on one of interfaces FW crashes were observed. In the newest FW this issue is solved, so remove limitaion after examining corresponding TLV flag. Signed-off-by: Alexander Bondar <alexander.bondar@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: Set RRM_ENABLED bit in scan commandsAndrei Otcheretianski2014-09-16
| | | | | | | | | | | | Set RRM_ENABLED (bit 6) flag in scan commands. When this flag is set the fw will add WFA vendor-specific TPC report and DS parameter set IEs into probe requests. This bit is set for SCAN_OFFLOAD_REQUEST_CMD(0x51). Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Assaf Krauss <assaf.krauss@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: Announce Quiet Period supportAssaf Krauss2014-09-16
| | | | | | | | | Add a ucode capability flag for support of Quiet Period (part of RRM). If this flag is set, advertise device support. Signed-off-by: Assaf Krauss <assaf.krauss@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: Update TX power in TPC reportsAndrei Otcheretianski2014-09-16
| | | | | | | | | | | | | | Introduce new tx command flag (TX_CMD_FLG_WRITE_TX_POWER) which requests the fw to update the tx power value at some constant offset. Set this flag when transmitting either TPC report or Link measurement report action frames. In addition, introduce new tlv which indicates whether the fw supports power insertion (IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) and publish the corresponding nl80211 feature. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: support cloned tx skbsIdo Yariv2014-09-16
| | | | | | | | | Since tx skbs are not modified by the driver, let mac80211 know the driver can handle cloned skbs. Signed-off-by: Ido Yariv <idox.yariv@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* Merge tag 'mac80211-next-for-john-2014-09-12' of ↵John W. Linville2014-09-15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg <johannes@sipsolutions.net> says: "This time, I have some rate minstrel improvements, support for a very small feature from CCX that Steinar reverse-engineered, dynamic ACK timeout support, a number of changes for TDLS, early support for radio resource measurement and many fixes. Also, I'm changing a number of places to clear key memory when it's freed and Intel claims copyright for code they developed." Conflicts: net/mac80211/iface.c Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: replace SMPS hw flags with wiphy feature bitsEliad Peller2014-09-11
| | | | | | | | | | | | | | | | | | Use the new static_smps / dynamic_smps feature bits instead of mac80211-internal hw flags. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | iwlwifi: mvm: move IWL_MVM_UAPSD_QUEUES to constants.hEliad Peller2014-09-14
| | | | | | | | | | | | Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: move TDLS code to separate fileArik Nemtsov2014-09-14
| | | | | | | | | | | | | | | | | | The upcoming TDLS channel-switch functionality is big enough to warrant a separate file. Move existing related functions to the new file. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: update QoS parameters when they changeJohannes Berg2014-09-14
| | | | | | | | | | | | | | | | | | | | The QoS parameters can change during the lifetime of the BSS, and more importantly hostapd only sets up the correct ones after having started the AP/GO. Resend the MAC context when the parameters change, with the updated parameters. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: allow to collect debug data when restart is disabledEmmanuel Grumbach2014-09-14
| | | | | | | | | | | | | | In some testing configuration, the firmware restart flow is not enabled. Allow to collect logs even in this case. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: use the firmware to get the temperature during CT killLuciano Coelho2014-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reading the temperature directly from the hardware, without the help of the firmware, is a complex process and is not entirely the same for different hardware. Also, some NICs don't easily allow access to the sensors when the firmware is not running, which would add even more complexity to the code. To reduce the code complexity and to avoid code duplication between the firmware and the driver, boot the firmware briefly to read the current temperature while in CT kill mode. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: add MVM_FW_MCAST_FILTER_PASS_ALL optionMax Stepanov2014-09-14
| | | | | | | | | | | | | | | | Add MVM_FW_MCAST_FILTER_PASS_ALL option to iwl-dbg-cfg.ini configuration file to enable/disable FW multicast filtering. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: reset ucode_loaded flag when mac80211 stop is calledLuciano Coelho2014-09-14
| | | | | | | | | | | | | | | | | | | | | | We rely on the value of the mvm->ucode_loaded flag to decide whether or not we can perform certain operations (e.g. access to some debugfs entries), so we need to reset it when the mac80211 stop operation is called and the hardware is shutdown. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | Merge remote-tracking branch 'iwlwifi-fixes/master' into NEXTEmmanuel Grumbach2014-09-14
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| * | iwlwifi: mvm: correctly handle PM/QoS changes from mac80211Johannes Berg2014-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When mac80211 requests multiple BSS config changes, as for example while associating, we ignore power management and QoS changes and only apply them later. Fix that by removing the "else" and making the conditions independent. Also move it after (potential) beacon filter enablement to have that already enabled when going into power management code. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
| * | iwlwifi: mvm: enable scheduled scan on newest firmwareEmmanuel Grumbach2014-09-01
| |/ | | | | | | | | | | | | | | | | | | Scheduled scan was disabled because of a bug in the firmware. The firmware reported support for this feature, but enabling it led to assertions. The bugs have been fixes in latest firmware versions, so that we can re-enable the feature on latest firmwares only. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: clean up AUX station handlingJohannes Berg2014-09-03
| | | | | | | | | | | | | | | | | | The auxiliary station is being handled using the internal station helper functions, clean that up and make the helpers static. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: clean up broadcast station handlingJohannes Berg2014-09-03
| | | | | | | | | | | | | | | | | | | | | | Unify all the functions that handle the per-interface broadcast station and make them have mvm and vif parameters. While at it, add a new function to allocate the broadcast station instead of open-coding it, and make the combined alloc+send and free+send functions use the alloc/free & send functions. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: use iwl_mvm_mac_get_queues_mask() moreJohannes Berg2014-09-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a few places that can call the function iwl_mvm_mac_get_queues_mask() instead of open-coding the equivalent, so do that. This requires changing it to return the multicast queue as part of the bitmap, which broke GO mode because including it in the broadcast station queues seems to confuse the firmware, so work around that. Also, the API defines that the CAB queue shouldn't be included in the TFD queue mask, adjust the comment accordingly (not a bug). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: correct firmware disassoc command sequenceJohannes Berg2014-09-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The firmware would like to have a MAC context (unassoc) before the AP station is removed (we do this) but would like to keep the BSSID until after it is removed, so we need to send two commands - one with the BSSID before and one without the BSSID after. In order to do this, we need to store the BSSID as it will have been cleared by mac80211 by the time we get notified of the disassociation. Also pass it around as an override to the various functions needing it, and keep taking it from the mac80211 data otherwise. This avoids having to keep track of the BSSID in all modes. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: set the TX disable bit when doing a chanctx switchLuciano Coelho2014-09-03
| | | | | | | | | | | | | | | | | | During a channel switch we should tell the firmware to disable TX temporarily and re-enable it after the switch is done. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: add Intel Mobile Communications copyrightJohannes Berg2014-09-03
| | | | | | | | | | | | | | | | | | | | | | | | Our legal structure changed at some point (see wikipedia), but we forgot to immediately switch over to the new copyright notice. For files that we have modified in the time since the change, add the proper copyright notice now. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: wait for TE notif when protecting TDLS sessionLiad Kaufman2014-09-03
| | | | | | | | | | | | | | | | | | Make sure that when running the TDLS discovery session protection - the time event that ensures we remain on channel has been scheduled and started running before leaving. Signed-off-by: Liad Kaufman <liad.kaufman@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: add option that allows a vif to disable PSLuciano Coelho2014-09-03
| | | | | | | | | | | | | | | | | | | | | | We need to disable PS when a monitor vif is active or, in the future, when a channel switch is happening. Add a boolean to mvmvif that allows PS to be disabled generically. Additionally, make the monitor interface use this new flag when it gets activated. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: re-enable ps when monitor interfaces are removedLuciano Coelho2014-09-03
| | | | | | | | | | | | | | | | | | | | | | | | | | If a monitor interface is added and then removed, we don't reset the mvm->ps_disabled flag, so we never re-enable power saving. Fix that and rearrange the code a bit. Additionally, fix a small indentation mistake in the iwl_mvm_power_set_pm() function declaration. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: clear d0i3 state on recoveryEliad Peller2014-09-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If recovery happened after mvm entered d0i3 (e.g. due to sysassert when releasing the bus), the mvm->state wasn't cleared properly, causing the ongoing recovery to fail (due to iwl_mvm_ref_sync failure). This in turn fails the ongoing recovery, and triggers a reprobe, which terminates any ongoing wifi activity. Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Reviewed-by: Gregory Greenman <gregory.greenman@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: use dynamic SMPS for P2P ClientEmmanuel Grumbach2014-09-03
|/ | | | | | | | This allows to force the GO to use protection and enhances the reliability of the link. Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: disable scheduled scan to prevent firmware crashEmmanuel Grumbach2014-08-14
| | | | | | | | | | There are firmwares which don't support scheduled scan. Disable it for now. Linus's system encoutered this issue. Thanks to David Spinadel for his help. Tested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* iwlwifi: mvm: teardown TDLS peers during chan-switch and AP DCMArik Nemtsov2014-07-22
| | | | | | | | | | The DCM condition was not checked well for channel switch in both AP and station scenarios. Teardown was also not done for AP/GO DCM. Add the missing checks. Reported-by: Peer, Ilan <ilan.peer@intel.com> Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* Merge branch 'iwlwifi-fixes' into iwlwifi-nextEmmanuel Grumbach2014-07-22
|\ | | | | | | | | | | | | Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Conflicts: drivers/net/wireless/iwlwifi/mvm/mac80211.c
| * iwlwifi: mvm: fix merge damageEmmanuel Grumbach2014-07-06
| | | | | | | | Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: reset beacon filtering and BT Coex data upon FW restartEmmanuel Grumbach2014-07-22
| | | | | | | | | | | | | | | | | | | | | | When the firmware asserts, we restart the device and reset the relevant data we hold in the driver. BT Coex data was not reset and because of that, the driver wouldn't reconfigure the firmware properly after firmware restart. Same for beacon filtering. Fix that. Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: update smart fifo / beacon filtering upon associationEran Harary2014-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When we associate, we may have heard the beacon before the association. In that case, BSS_CHANGED_BEACON_INFO will be set along with BSS_CHANGED_ASSOC in changes in bss_info_change. In this case, we didn't update the smart fifo nor beacon filtering leaving those two feature disabled. Signed-off-by: Eran Harary <eran.harary@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: split fw-error-dump between transport and mvmEmmanuel Grumbach2014-07-22
| | | | | | | | | | | | | | | | | | | | | | The mvm op_mode won't allocate the buffer for the transport any more. The transport allocates its own buffer and mvm is in charge of splicing the buffers in the debugfs hook. This makes the repartition easier to handle. Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: wait for handlers when stopping scansEliad Peller2014-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The recent unified scan api change introduced issues when stopping ongoing scans, since both regular and sched scan now use same stopped notification. When issuing a new scan right after a running one, we get the "old" notification and handle it wrongly as notification for the current scan. Fix it by introducing a new function that make sure we consume the pending notifications before issuing a new scan. Signed-off-by: Eliad Peller <eliad@wizery.com> Reviewed-by: ArikX Nemtsov <arik@wizery.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: add Aux ROC request/response flowAriej Marjieh2014-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Remain On Channel framework added to the firmare is a bit like time events. It allows the driver to request the firmware to be on a certain channel for a certain time. Unlike the time events, the ROC infrastructure doesn't need a MAC context in the firmware - it uses a generic context called "auxiliary framework". This is useful for any offchannel activity that is not bound to a specific MAC. The flow is synchronized much like with time events: 1) The driver receives an action frame from the wpa_supplicant via nl80211 that requests to be sent offchannel. 2) The driver sends an Aux ROC command (0x53) to the firmware. 3) The firmware responds with the unique id of the time event. 4) When time event starts, the driver puts the frame in the Aux queue. Special care needs to be taken when the time events ends: the queue needs to be cleaned-up. Signed-off-by: Ariej Marjieh <ariej.marjieh@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: add some missing iwl_mvm_ref_sync() callsEliad Peller2014-07-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add iwl_mvm_ref_sync() calls (with new ref types) to flows that might access the device directly. These calls make sure the device is out of d0i3, and the bus is available for direct access. Since some of these functions are reentrant, convert the refs_bitmap to a ref counter, so multiple refs of the same type could be taken concurrently. Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: teardown TDLS peers when initiating DCMArik Nemtsov2014-07-07
| | | | | | | | | | | | | | | | | | The FW currently doesn't optimally support TDLS in DCM mode. Teardown all TDLS peers when we have more than a single phy context. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: disable PSM on vifs with associated TDLS peersArik Nemtsov2014-07-07
| | | | | | | | | | | | | | | | | | The FW does not support PSM on a vif with associated TDLS peers. Disable PSM when the first peer joins and re-enable it when the last leaves. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: protect TDLS discovery sessionArik Nemtsov2014-07-07
| | | | | | | | | | | | | | | | | | | | Use the new mac80211 callback to protect a TDLS discovery session so we can hear the discovery-response packet. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: disallow new TDLS stations when appropriateArik Nemtsov2014-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | HW/FW constraints dictate that TDLS should only be used when a single phy ctx is active. We also support at most 4 TDLS peers. We don't support TDLS on a P2P vif. Unify and move a phy-ctx counting implementation from the power-mgmt code in order to simplify implementation. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: Use CS tx block bit for AP/GOAndrei Otcheretianski2014-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An AP/GO may perform the channel switch slightly before its stations. This scenario may result in packet loss, since the transmission may start before the client is actually on a new channel. In order to prevent potential packet loss disable tx to all the stations when the channel switch flow starts. Clear the disable_tx bit when a station is seen on a target channel, or after IWL_MVM_CS_UNBLOCK_TX_TIMEOUT beacons on a new channel. In addition call ieee80211_sta_block_awake in order to inform mac80211 that the frames for this station should be buffered. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: Reflect GO channel switch in NoAAndrei Otcheretianski2014-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | According to the spec, GO/AP should perform the channel switch just before "beacon 0". However, since the exact timing isn't defined, it may result in a sudden GO disappearance from the channel. Prevent potential packet loss when performing the CS by scheduling NoA time event and executing the channel switch flow when a notification from fw is received. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: Protect mvm->csa_vif with RCUAndrei Otcheretianski2014-07-07
| | | | | | | | | | | | | | | | | | Currently mvm->csa_vif is protected with mvm mutex. The RCU protection is required for "iwlwifi: mvm: Reflect GO channel switch in NoA" patch. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
* | iwlwifi: mvm: CSA unbind-bind flow support for clientLuciano Coelho2014-07-07
| | | | | | | | | | | | | | | | | | | | | | Implement support for unbind-bind flow for the client roles. This includes telling the firmware that we are not associated, removing time-events, removing quotas and updating power management during the actual switch, and redoing everything in the new channel. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-08 01:23:54 -0400