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* cfg80211: don't allow WoWLAN support without CONFIG_PMJohannes Berg2012-06-273-4/+13
| | | | | | | | | | | | | | | | When CONFIG_PM is disabled, no device can possibly support WoWLAN since it can't go to sleep to start with. Due to this, mac80211 had even rejected the hardware registration. By making all the code and data for WoWLAN depend on CONFIG_PM we can promote this runtime error to a compile-time error. Add #ifdef around all WoWLAN code to remove it in systems that don't need it as they never suspend. Cc: Kalle Valo <kvalo@qca.qualcomm.com> Acked-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: make __ieee80211_recalc_idle staticJohannes Berg2012-06-262-122/+121
| | | | | | | | Since it's not called from any file outside where it's defined, the function can be static if moved up in the file before the callers. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: make ieee80211_check_concurrent_iface netdev-independentJohannes Berg2012-06-261-5/+3
| | | | | | | | ieee80211_check_concurrent_iface() need not use the netdev. Remove the use of the netdev here to prepare the function for P2P device addition. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove unused functionJohannes Berg2012-06-261-6/+0
| | | | | | Remove the unused function is_ieee80211_device(). Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: specify RSSI threshold in scheduled scanThomas Pedersen2012-06-261-1/+8
| | | | | | | | | Support configuring an RSSI threshold in dBm (s32) when requesting scheduled scan, below which a BSS won't be reported by the cfg80211 driver. Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: trace debug messagesJohannes Berg2012-06-244-0/+136
| | | | | | | | | It can be very useful to have all debug messages available when debugging, but hard to correlate between different sources, so add a trace event for all mac80211 debug messages. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: rename driver-trace fileJohannes Berg2012-06-245-6/+5
| | | | | | | This file will contain more soon, so rename it to just trace. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: clean up debuggingJohannes Berg2012-06-2422-429/+519
| | | | | | | | | | | | | | | | | | There are a few things that make the logging and debugging in mac80211 less useful than it should be right now: * a lot of messages should be pr_info, not pr_debug * wholesale use of pr_debug makes it require *both* Kconfig and dynamic configuration * there are still a lot of ifdefs * the style is very inconsistent, sometimes the sdata->name is printed in front Clean up everything, introducing new macros and separating out the station MLME debugging into a new Kconfig symbol. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: pass sdata to some RX functionsJohannes Berg2012-06-221-17/+16
| | | | | | | | For better debugging, we would like to have the sdata pointer available later, so pass it into these functions. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: two small verbose debug cleanupsJohannes Berg2012-06-222-2/+2
| | | | | | | Two instances of CONFIG_MAC80211_VERBOSE_DEBUG should be different, fix them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove TKIP debugJohannes Berg2012-06-222-53/+1
| | | | | | | | The TKIP code hasn't been changed in a very long time, so it seems unlikely that anyone really has a need for the TKIP debug code. Remove it. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add command to get current rssiVictor Goldenshtein2012-06-213-8/+54
| | | | | | | | | | | | Get current rssi (in dBm) from the driver/FW. Instead of reporting the signal received in the last rx packet, which might be inaccurate if rx traffic is low and beacon filtering is enabled, get the signal from the driver/FW. Signed-off-by: Victor Goldenshtein <victorg@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix double-start of remain-on-channelJohannes Berg2012-06-202-2/+7
| | | | | | | | | | | | | | When a remain-on-channel item is deleted, we remove it from the list and then start the next item. However, if it wasn't actually the first item then calling ieee80211_start_next_roc() is wrong as it will start the first item -- even if that was already started. Fix the two places that do this and add a warning to prevent the problem from reoccurring. Reported-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Allow userspace to register for auth frames in IBSSWill Hawkins2012-06-201-1/+3
| | | | | | | | | | | Set the necessary flags to allow user space applications to register for authentication frames on IBSS interfaces. This is useful for situations where userspace applications want to control key negotiation between stations. Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org> [reword commit message a bit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: send auth in IBSS only if userspace isn't handling itWill Hawkins2012-06-201-1/+1
| | | | | | | | | | | | Check the auth frame registration count before sending "open system" authentication messages when a new station registers on a particular IBSS network. This stops us from sending out multiple authentication messages with different authentication algorithms. Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org> [reword commit message a bit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Track auth frame registrations on IBSS ifacesWill Hawkins2012-06-202-7/+22
| | | | | | | | | | | | Track userspace registrations for authentication frames received on an IBSS interface. This field will be used to decide whether or not to send "open system" authentication frames when a new station joins an adhoc network. Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org> [redesign the code flow a bit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix cleanup if driver suspend callback failsEyal Shapira2012-06-201-0/+10
| | | | | | | | | | | | In case the driver suspend callback fails, mac80211 is left with stopped queues which prevents any further traffic as well as all STAs are left marked with WLAN_STA_BLOCK_BA which will cause any further ADDBA requests to be declined. Fix it by undoing both before returning from __iee80211_suspend. Reported-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Eyal Shapira <eyal@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: save wmm_acm per sdataYoni Divinsky2012-06-206-14/+17
| | | | | | | | | | | | | | Save and configure the wmm_acm per sdata, rather than per hardware. If wmm_acm is saved per hardware when running two interfaces simultaneously on the same hardware one interface's wmm policy will be affected by the other interface. Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: use the correct capability info in ieee80211_set_associated()Luciano Coelho2012-06-201-1/+1
| | | | | | | | | | | | | | | | If an AP is beaconing with different capabilities than the one we get in the associate response, we were still using the capabilities received in the beacons. One example is when the AP is beaconing with the short slot bit set to zero and then we try to connect to it with long slot. In this case, we would keep using long slot until the next beacon was received. Fix this by using the correct capability value when calling ieee80211_handle_bss_capability(). We were using cbss->capability, but we should use the bss_conf->assoc_capability instead. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* cfg80211: fix regression in multi-vif AP startFelix Fietkau2012-06-201-2/+32
| | | | | | | | | | | | | Commit "cfg80211: provide channel to start_ap function" assumes that the channel is always passed to the NL80211_CMD_START_AP command, however in case of multi-BSSID, hostapd only passes the channel for the first vif. This makes starting beaconing on secondary vifs fail with -EINVAL. Fix this by storing the channel provided to .start_ap in wdev->preset_chan and picking the first AP vif's channel for secondary vifs if not provided. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: use __cfg80211_rdev_from_attrs for testmodeJohannes Berg2012-06-201-13/+10
| | | | | | | | To fix the testmode cross-namespace access problem, use __cfg80211_rdev_from_attrs() to get the device instead of open-coding similar functionality. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: change __cfg80211_rdev_from_infoJohannes Berg2012-06-201-9/+10
| | | | | | | | Change the function to __cfg80211_rdev_from_attrs to take attributes instead of the info struct to make it usable from dump callbacks for testmode. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: fix netns separationJohannes Berg2012-06-201-9/+12
| | | | | | | | | | | | | There are currently a few ways to "escape" the network namespace and access a wiphy that belongs to another namespace. Add a netns argument to the relevant functions to fix this. One remaining issue with testmode will be fixed in a follow-up patch. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: refactor __cfg80211_rdev_from_infoJohannes Berg2012-06-201-28/+31
| | | | | | | Refactor the function to make it easier to extend. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* cfg80211: make some functions staticJohannes Berg2012-06-203-89/+82
| | | | | | | Some of the functions to retrieve a device can be static as they're used only in nl80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: initialize sta pointer to avoid false-positive warningLuciano Coelho2012-06-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some compilers (eg. gcc 4.4.1 for ARM) report a false positive warning in mlme.c: net/mac80211/mlme.c: In function 'ieee80211_prep_connection': net/mac80211/mlme.c:3035: warning: 'sta' may be used uninitialized in this function This is a false positive because the place where 'sta' is used is inside an if with the same condition of where it is set: [...] if (!have_sta) { sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); if (!sta) return -ENOMEM; } [...] if (!have_sta) { [...] sta->sta.supp_rates[cbss->channel->band] = rates; [...] For some reason the compiler doesn't understand this and warns. While this is not a problem in the code itself, we can avoid polluting the build logs with false positives by setting sta to NULL on declaration and checking for sta instead of !have_sta in the second if. Reported-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: cleanup offchannel_ps_enable argumentRajkumar Manoharan2012-06-201-5/+4
| | | | | | | | The 'tell_ap' argument is always true. So that remove it and simplify the function. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix and improve mesh RANN processingChun-Yeow Yeoh2012-06-181-18/+25
| | | | | | | | | | | | | | | | This patch fixes the problem of dropping RANN element if the TTL is 1. If the received RANN element TTL is 1 or greater than 1, the RANN is processed. However, forwarding of received RANN element with TTL 1 or less is prohibited according to the standard. This is previously reported by Monthadar Al Jaberi. Besides, this patch also avoid the processing of unicast PREQ generation if the RANN element does not meet the acceptance criteria mentioned in Sec. 13.10.12.4.2 of IEEE Std. 802.11-2012. Reported-by: Monthadar Al Jaberi <monthadar@gmail.com> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: set only VO as a U-APSD enabled ACArik Nemtsov2012-06-181-4/+7
| | | | | | | | | | | Some APs experience problems when working with U-APSD. Decrease the probability of that happening by using legacy mode for all ACs but VO. The AP that caused us troubles was a Cisco 4410N. It ignores our setting, and always treats non-VO ACs as legacy. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: stop Rx during HW reconfigArik Nemtsov2012-06-184-0/+17
| | | | | | | | | | While HW reconfig is in progress, drop all incoming Rx. This prevents incoming packets from changing the internal state of the driver or calling callbacks of the low level driver while it is in inconsistent state. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix the assignment of mesh element TTLChun-Yeow Yeoh2012-06-181-1/+1
| | | | | | | This patch fixes the wrong assignment of mesh element TTL. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* {nl,cfg,mac}80211: implement dot11MeshHWMPconfirmationIntervalChun-Yeow Yeoh2012-06-186-2/+24
| | | | | | | | | | | | | | As defined in section 13.10.9.3 Case D (802.11-2012), this control variable is used to limit the mesh STA to send only one PREQ to a root mesh STA within this interval of time (in TUs). The default value for this variable is set to 2000 TUs. However, for current implementation, the maximum configurable of dot11MeshHWMPconfirmationInterval is restricted by dot11MeshHWMPactivePathTimeout. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: invoke the timer only with correct dot11MeshHWMPRootMode valueChun-Yeow Yeoh2012-06-182-3/+3
| | | | | | | | | | | | | | | | | | | | mesh_path_root_timer is invoked once the dot11MeshHWMPRootMode is larger than 1. This patch also adds the backward compatible to the previous setting on dot11MeshHWMPRootMode. If the user configures as follow, it will still trigger the proactive RANN with Gate Announcement. iw mesh0 set mesh_param mesh_hwmp_rootmode 1 iw mesh0 set mesh_param mesh_gate_announcements 1 similar to the following setting: iw mesh0 set mesh_param mesh_hwmp_rootmode 4 iw mesh0 set mesh_param mesh_gate_announcements 1 Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: implement the proactive PREP generationChun-Yeow Yeoh2012-06-181-5/+33
| | | | | | | | Generate the proactive PREP element in Proactive PREQ mode as defined in Sec. 13.10.10.3 (Case D) of IEEE Std. 802.11-2012. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: implement the proactive PREQ generationChun-Yeow Yeoh2012-06-142-5/+32
| | | | | | | | | | | | | | | | | | Generate the proactive PREQ element as defined in Sec. 13.10.9.3 (Case C) of IEEE Std. 802.11-2012 based on the selection of dot11MeshHWMPRootMode as follow: dot11MeshHWMPRootMode (2) is proactivePREQnoPREP dot11MeshHWMPRootMode (3) is proactivePREQwithPREP The proactive PREQ is generated based on the interval defined by dot11MeshHWMProotInterval. With this change, proactive RANN element is now generated if the dot11MeshHWMPRootMode is set to (4) instead of (1). Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* {nl,cfg,mac}80211: implement dot11MeshHWMProotInterval and ↵Chun-Yeow Yeoh2012-06-144-1/+30
| | | | | | | | | | | | dot11MeshHWMPactivePathToRootTimeout Add the mesh configuration parameters dot11MeshHWMProotInterval and dot11MeshHWMPactivePathToRootTimeout to be used by proactive PREQ mechanism. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* nl80211: fix sched scan match attribute nameJohannes Berg2012-06-131-2/+2
| | | | | | | It should be NL80211_SCHED_SCAN_MATCH_ATTR_SSID as documented, not NL80211_ATTR_SCHED_SCAN_MATCH_SSID. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Disallow changing chan type on monitor when CHAN_MODE_FIXEDPontus Fuchs2012-06-131-1/+2
| | | | | | | | | | | If you add a monitor interface in parallel to a normal interface mac80211 will let you to change the channel type on the monitor interface even if you are connected. Add an explicit check to disallow this. Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com> [fix typo in commit log, use sdata instead of netdev] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: allow cancelling dependent ROCsJohannes Berg2012-06-131-0/+22
| | | | | | | | | | | | | | | | | In my redesign of remain-on-channel I forgot that an item could be cancelled when it's a dependent item that is part of another item. Allow cancelling such items by removing them from the dependents list. Note that when we cancel the main item, all its dependents are also cancelled. It would be possible to not do that, but would need tricks to promote an item from dependent to top-level and is tricky in the HW ROC case. Reported-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove unneeded ieee80211_run_deferred_scan()Johannes Berg2012-06-112-6/+0
| | | | | | | | | | Ilan pointed out to me that ieee80211_start_next_roc() already calls ieee80211_run_deferred_scan() if the list of ROC items is empty, so there's no need to call it again after calling ieee80211_start_next_roc(). Reported-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* {nl,cfg,mac}80211: fix the coding style related to mesh parametersChun-Yeow Yeoh2012-06-113-64/+70
| | | | | | | | fix the coding style related to mesh parameters, especially the indentation, as pointed out by Johannes Berg. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Rename stainfo variable for the more common staJavier Cardona2012-06-092-5/+5
| | | | | | Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Jason Abele <jason@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Remove unused variableJavier Cardona2012-06-091-3/+0
| | | | | | Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Jason Abele <jason@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: unify SW/offload remain-on-channelJohannes Berg2012-06-069-751/+532
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Redesign all the off-channel code, getting rid of the generic off-channel work concept, replacing it with a simple remain-on-channel list. This fixes a number of small issues with the ROC implementation: * offloaded remain-on-channel couldn't be queued, now we can queue it as well, if needed * in iwlwifi (the only user) offloaded ROC is mutually exclusive with scanning, use the new queue to handle that case -- I expect that it will later depend on a HW flag The bigger issue though is that there's a bad bug in the current implementation: if we get a mgmt TX request while HW roc is active, and this new request has a wait time, we actually schedule a software ROC instead since we can't guarantee the existing offloaded ROC will still be that long. To fix this, the queuing mechanism was needed. The queuing mechanism for offloaded ROC isn't yet optimal, ideally we should add API to have the HW extend the ROC if needed. We could add that later but for now use a software implementation. Overall, this unifies the behaviour between the offloaded and software-implemented case as much as possible. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: do remain-on-channel while idleJohannes Berg2012-06-064-24/+10
| | | | | | | | | | | | | | | | | | The IDLE handling in HW off-channel is broken right now since we turn off IDLE only when the off-channel period already started. Therefore, all drivers that use it today (only iwlwifi!) must support off-channel while idle, so playing with idle isn't needed at all. Off-channel in general, since it's no longer used for authentication/association, shouldn't affect PS, so also remove that logic. Also document a small caveat for reporting TX status from off-channel frames in HW remain-on-channel. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: add stations after AP start on reconfigArik Nemtsov2012-06-061-7/+30
| | | | | | | | | | | | When performing a HW restart for an AP mode interface, add stations back only after the AP is beaconing. This mimics the normal flow of STA addition on AP. Some devices (wlcore) do not support adding stations before beaconing, so this has the added benefit of making recovery work for them. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: validate remain-on-channel time betterJohannes Berg2012-06-061-7/+16
| | | | | | | | | | | | | | | | The remain-on-channel time validation shouldn't depend on the value of HZ, as it does now with the check against jiffies, since then you might use a value that works on one system but not on another. Fix it by checking against a minimum that's fixed. Also add validation of the wait duration for a management frame TX since this also translates into remain-on-channel internally. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Clear wowlan flag when drv_suspend returns failurePontus Fuchs2012-06-061-0/+1
| | | | | | | | | | | | | | | | drv_resume can get called without a prior call to drv_suspend. Consider the following steps: 1. Suspend is started but driver's drv_suspend returns error. 2. Suspend is aborted. local->wowlan flag is left set. 3. Interface is removed. 4. Suspend again. This time open_count is 0 so drv_suspend is not called and local->wowlan not cleared. 5. On resume ieee80211_reconfig will call drv_resume since local->wowlan is set. Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Add missing mesh parameter dot11MeshForwarding for debugfsChun-Yeow Yeoh2012-06-061-0/+1
| | | | | Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: print info when disabling HTJohannes Berg2012-06-061-3/+10
| | | | | | | | | Make mac80211 print a message when it disables HT due to the connection using WEP/TKIP or due to the AP not supporting WMM/QoS. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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