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* cfg80211: self-contained wext handling where possibleJohannes Berg2009-07-29
| | | | | | | | | | | | | | | | | Finally! This is what you've all been waiting for! This patch makes cfg80211 take care of wext emulation _completely_ by itself, drivers that don't need things cfg80211 doesn't do yet don't even need to be aware of wireless extensions. This means we can also clean up mac80211's and iwm's Kconfig and make it possible to build them w/o wext now! RIP wext. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: combine IWESSID handlersJohannes Berg2009-07-29
| | | | | | | | Since we now have handlers IWESSID for all modes, we can combine them into one. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: combine IWAP handlersJohannes Berg2009-07-29
| | | | | | | | Since we now have IWAP handlers for all modes, we can combine them into one. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: combine iwfreq implementationsJohannes Berg2009-07-29
| | | | | | | | | | Until now we implemented iwfreq for managed mode, we needed to keep the implementations separate, but now that we have all versions implemented we can combine them and export just one handler. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: implement get_wireless_statsJohannes Berg2009-07-10
| | | | | | | | | | By dropping the noise reporting, we can implement wireless stats in cfg80211. We also make the handler return NULL if we have no information, which is possible thanks to the recent wext change. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: implement IWRATEJohannes Berg2009-07-10
| | | | | | | | | | For now, let's implement that using a very hackish way: simply mirror the wext API in the cfg80211 API. This will have to be changed later when we implement proper bitrate API. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: implement IWAP for WDSJohannes Berg2009-07-10
| | | | | | | This implements siocsiwap/giwap for WDS mode. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: implement iwpowerJohannes Berg2009-07-10
| | | | | | | | | Just on/off and timeout, and with a hacky cfg80211 method until we figure out what we want, though this is probably sufficient as we want to use pm_qos for wifi everywhere. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: managed mode wext compatibilityJohannes Berg2009-07-10
| | | | | | | | | | | | | This adds code to make it possible to use the cfg80211 connect() API with wireless extensions, and because the previous patch added emulation of that API with auth() and assoc(), by extension also supports wext on that. At the same time, removes code from mac80211 for wext, but doesn't yet clean up mac80211's mlme code more. Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: disconnect when user changes channelJohannes Berg2009-06-15
| | | | | | | | | | | | | | | | | | | If we do not disconnect when a channel switch is requested, we end up eventually detection beacon loss from the AP and then disconnecting, without ever really telling the AP, so we might just as well disconnect right away. Additionally, this fixes a problem with iwlwifi where the driver will clear some internal state on channel changes like this and then get confused when we actually go clear that state from mac80211. It may look like this patch drops the no-IBSS check, but that is already handled by cfg80211 in the wext handler it provides for IBSS (cfg80211_ibss_wext_siwfreq). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: move txpower wext from mac80211Johannes Berg2009-06-03
| | | | | | | | | | This patch introduces new cfg80211 API to set the TX power via cfg80211, puts the wext code into cfg80211 and updates mac80211 to use all that. The -ENETDOWN bits are a hack but will go away soon. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: don't try to do anything on unchanged genIEJohannes Berg2009-05-20
| | | | | | | | | | | | | | | | | | | When the genIE hasn't changed there's no reason to kick the state machine since it won't be able to do anything new -- doing this decreases the useless work we do for reassociating because if we do kick the state machine it will try to find a usable BSS but there might not be one because wpa_supplicant will only change the BSSID a little later. In a sense this is a workaround for userspace behaviour, but on the other hand userspace cannot really keep track of what the kernel currently has for genIE since any process could have changed that while wpa_supplicant wasn't looking. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* nl80211: Add IEEE 802.1X PAE control for station modeJouni Malinen2009-05-13
| | | | | | | | | | | | | | | Add a new NL80211_ATTR_CONTROL_PORT flag for NL80211_CMD_ASSOCIATE to allow user space to indicate that it will control the IEEE 802.1X port in station mode. Previously, mac80211 was always marking the port authorized in station mode. This was enough when drop_unencrypted flag was set. However, drop_unencrypted can currently be controlled only with WEXT and the current nl80211 design does not allow fully secure configuration. Fix this by providing a mechanism for user space to control the IEEE 802.1X port in station mode (i.e., do the same that we are already doing in AP mode). Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: implement wext key handlingJohannes Berg2009-05-13
| | | | | | | | | | | | | | | | | | | Move key handling wireless extension ioctls from mac80211 to cfg80211 so that all drivers that implement the cfg80211 operations get wext compatibility. Note that this drops the SIOCGIWENCODE ioctl support for getting IW_ENCODE_RESTRICTED/IW_ENCODE_OPEN. This means that iwconfig will no longer report "Security mode:open" or "Security mode:restricted" for mac80211. However, what we displayed there (the authentication algo used) was actually wrong -- linux/wireless.h states that this setting is meant to differentiate between "Refuse non-encoded packets" and "Accept non-encoded packets". (Combined with "cfg80211: fix a couple of bugs with key ioctls". -- JWL) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: report operating frequency rather than currentJohannes Berg2009-05-06
| | | | | | | | | | It's not very helpful to see, in iwconfig, the current frequency the card is tuned to if that frequency is currently somewhere across the board because we're scanning. Since we keep track of the frequency the user wants, display that instead. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove IEEE80211_CONF_CHANGE_DYNPS_TIMEOUTJohannes Berg2009-04-22
| | | | | | | | | | | Just setting IEEE80211_CONF_CHANGE_PS should be sufficient for changes in the power saving things. The driver already tells us whether it wants notification of dynps via the "have dynps support" hw flag. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* nl80211: Add set/get for frag/rts threshold and retry limitsJouni Malinen2009-04-22
| | | | | | | | | | | | | | | | Add new nl80211 attributes that can be used with NL80211_CMD_SET_WIPHY and NL80211_CMD_GET_WIPHY to manage fragmentation/RTS threshold and retry limits. Since these values are stored in struct wiphy, remove the local copy from mac80211 where feasible (frag & rts threshold). The retry limits are currently needed in struct ieee80211_conf, but these could be eventually removed since the driver should have access to the values in struct wiphy. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: convert to cfg80211 IBSS APIJohannes Berg2009-04-22
| | | | | | | | This converts mac80211 to the new cfg80211 IBSS API, the wext handling functions are called where appropriate. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211/mac80211: move wext SIWMLME into cfg80211Johannes Berg2009-04-22
| | | | | | | | Since we have ->deauth and ->disassoc we can support the wext SIWMLME call directly without driver wext handlers. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: disable powersave if pm_qos asks for low latencyJohannes Berg2009-04-22
| | | | | | | | | | When an application asks for a latency lower than the beacon interval there's nothing we can do -- we need to stay awake and not have the AP buffer frames for us. Add code to automatically calculate this constraint in mac80211 so drivers need not concern themselves with it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: improve powersave implementationJohannes Berg2009-04-22
| | | | | | | | | | | | | | | | | | | | | | When you have multiple virtual interfaces the current implementation requires setting them up properly from userspace, which is undesirable when we want to default to power save mode. Keep track of powersave requested from userspace per managed mode interface, and only enable powersave globally when exactly one managed mode interface is active and has powersave turned on. Second, only start the dynPS timer when PS is turned on, and properly turn it off when PS is turned off. Third, fix the scan_sdata abuse in the dynps code. Finally, also reorder the code and refactor the code that enables PS or the dynps timer instead of having it copied in two places. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Don't access managed mode bits in non-managed modeVasanthakumar Thiagarajan2009-04-22
| | | | | | | This fixes a stupid bug introduced in 25f85c31d4f.. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Fragmentation threshold (typo)Gerrit Renker2009-04-16
| | | | | | | | | | | | | | mac80211: Fragmentation threshold (typo) ieee80211_ioctl_siwfrag() sets the fragmentation_threshold to 2352 when frame fragmentation is to be disabled, yet the corresponding 'get' function tests for 2353 bytes instead. This causes user-space tools to display a fragmentation threshold of 2352 bytes even if fragmentation has been disabled. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: correct wext transmit power handlerJohannes Berg2009-04-16
| | | | | | | | | | | | | | | | | | | | | Wext makes no assumptions about the contents of data->txpower.fixed and data->txpower.value when data->txpower.disabled is set, so do not update the user-requested power level while disabling. Also, when wext configures a really _fixed_ power output [1], we should reject it instead of limiting it to the regulatory constraint. If the user wants to set a _limit_ [2] then we should honour that. [1] iwconfig wlan0 txpower 20dBm fixed [2] iwconfig wlan0 txpower 10dBm This fixes http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1942 Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove mixed-cell and userspace MLME codeJohannes Berg2009-03-27
| | | | | | | | | | Neither can currently be set from userspace, so there's no regression potential, and neither will be supported from userspace since the new userspace APIs allow the SME, which is in userspace, to control all we need. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* nl80211: Add MLME primitives to support external SMEJouni Malinen2009-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds new nl80211 commands to allow user space to request authentication and association (and also deauthentication and disassociation). The commands are structured to allow separate authentication and association steps, i.e., the interface between kernel and user space is similar to the MLME SAP interface in IEEE 802.11 standard and an user space application takes the role of the SME. The patch introduces MLME-AUTHENTICATE.request, MLME-{,RE}ASSOCIATE.request, MLME-DEAUTHENTICATE.request, and MLME-DISASSOCIATE.request primitives. The authentication and association commands request the actual operations in two steps (assuming the driver supports this; if not, separate authentication step is skipped; this could end up being a separate "connect" command). The initial implementation for mac80211 uses the current net/mac80211/mlme.c for actual sending and processing of management frames and the new nl80211 commands will just stop the current state machine from moving automatically from authentication to association. Future cleanup may move more of the MLME operations into cfg80211. The goal of this design is to provide more control of authentication and association process to user space without having to move the full MLME implementation. This should be enough to allow IEEE 802.11r FT protocol and 802.11s SAE authentication to be implemented. Obviously, this will also bring the extra benefit of not having to use WEXT for association requests with mac80211. An example implementation of a user space SME using the new nl80211 commands is available for wpa_supplicant. This patch is enough to get IEEE 802.11r FT protocol working with over-the-air mechanism (over-the-DS will need additional MLME primitives for handling the FT Action frames). Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Populate HT limitation with TKIP/WEP to the handler for ↵Vasanthakumar Thiagarajan2009-03-27
| | | | | | | SIOCSIWENCODE too Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Fix quality reporting for wireless statsJohannes Berg2009-03-05
| | | | | | | | | | Since "mac80211/cfg80211: move iwrange handler to cfg80211", the results for link quality from "iwlist scan" and "iwconfig" commands have been very different. The results are now consistent. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reported- and tested-by: Larry Finger <larry.finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211/cfg80211: move iwrange handler to cfg80211Johannes Berg2009-02-27
| | | | | | | | | | | The previous patch made cfg80211 generally aware of the signal type a given hardware will give, so now it can implement SIOCGIWRANGE itself, removing more wext stuff from mac80211. Might need to be a little more parametrized once we have more hardware using cfg80211 and new hardware capabilities. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211/mac80211: fill qual.qual value/adjust max_qual.qualJohannes Berg2009-02-27
| | | | | | | | | | | | | | | | Due to various bugs in the software stack we end up having to fill qual.qual; level should be used, but wpa_supplicant doesn't properly ignore qual.qual, NM should use qual.level regardless of that because qual.qual is 0 but doesn't handle IW_QUAL_DBM right now. So fill qual.qual with the qual.level value clamped to -110..-40 dBm or just the regular 'unspecified' signal level. This requires a mac80211 change to properly announce the max_qual.qual and avg_qual.qual values. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: split IBSS/managed codeJohannes Berg2009-02-27
| | | | | | | | | | | | | | | | | This patch splits out the ibss code and data from managed (station) mode. The reason to do this is to better separate the state machines, and have the code be contained better so it gets easier to determine what exactly a given change will affect, that in turn makes it easier to understand. This is quite some churn, especially because I split sdata->u.sta into sdata->u.mgd and sdata->u.ibss, but I think it's easier to maintain that way. I've also shuffled around some code -- null function sending is only applicable to managed interfaces so put that into that file, some other functions are needed from various places so put them into util, and also rearranged the prototypes in ieee80211_i.h accordingly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: calculate wstats_flags on the flyJohannes Berg2009-02-13
| | | | | | | Just to make wext.c more self-contained. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211/nl80211: scanning (and mac80211 update to use it)Johannes Berg2009-02-13
| | | | | | | | | | This patch adds basic scan capability to cfg80211/nl80211 and changes mac80211 to use it. The BSS list that cfg80211 maintains is made driver-accessible with a private area in each BSS struct, but mac80211 doesn't yet use it. That's another large project. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: properly validate/translate IW_AUTH_MFP valuesJohannes Berg2009-02-13
| | | | | | | | Make sure nobody passes in bogus values, and translate the values (although it isn't necessary). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove HW_SIGNAL_DBJohannes Berg2009-02-09
| | | | | | | | | | | | | Giving the signal in dB isn't much more useful to userspace than giving the signal in unspecified units. This removes some radiotap information for zd1211 (the only driver using this flag), but it helps a lot for getting cfg80211-based scanning which won't support dB, and zd1211 being dB is a little fishy anyway. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Bruno Randolf <bruno@thinktube.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Cancel the dynamic ps timer in ioctl_siwpower.Vivek Natarajan2009-01-30
| | | | | | | | | If the dynamic power save timer has been started before the power save is disabled using iwconfig, we fail to cancel the timer. Hence cancel it while disabling power save. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: 802.11w - Add driver capability flag for MFPJouni Malinen2009-01-29
| | | | | | | | | | This allows user space to determine whether a driver supports MFP and behave properly without having to ask user to configure this in MFP-optional mode. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: 802.11w - Configuration of MFP disabled/optional/requiredJouni Malinen2009-01-29
| | | | | | | | | Add new WEXT IW_AUTH_* parameter for setting MFP disabled/optional/required. Signed-off-by: Jouni Malinen <j@w1.fi> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: 802.11w - WEXT configuration for IGTKJouni Malinen2009-01-29
| | | | | | | | | Added new SIOCSIWENCODEEXT algorithm for configuring BIP (AES-CMAC) keys (IGTK). Signed-off-by: Jouni Malinen <j@w1.fi> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: 802.11w - WEXT parameter for setting mgmt cipherJouni Malinen2009-01-29
| | | | | | | | | | Add a new IW_AUTH parameter for setting cipher suite for multicast/broadcast management frames. This is for full-mac drivers that take care of RSN IE generation for (re)association request frames. Signed-off-by: Jouni Malinen <j@w1.fi> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: extend/document powersave APIJohannes Berg2009-01-29
| | | | | | | | | | | | | | | | | | This modifies hardware flags for powersave to support three different flags: * IEEE80211_HW_SUPPORTS_PS - indicates general PS support * IEEE80211_HW_PS_NULLFUNC_STACK - indicates nullfunc sending in software * IEEE80211_HW_SUPPORTS_DYNAMIC_PS - indicates dynamic PS on the device It also adds documentation for all this which explains how to set the various flags. Additionally, it fixes a few things: * a spot where && was used to test flags * enable CONF_PS only when associated again Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: move dynamic PS timeout to hardware configJohannes Berg2009-01-29
| | | | | | | | | | This will be needed for drivers that set the IEEE80211_HW_NO_STACK_DYNAMIC_PS flag and still want to handle dynamic PS. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: validate SIOCSIWPOWER arguments betterJohannes Berg2009-01-29
| | | | | | | | | Don't accept any arguments we don't handle, and return error codes instead of using an uninitialised stack value. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove user_power_level from driver APIJohannes Berg2009-01-29
| | | | | | | | | | | I missed this during review of "mac80211: Fix tx power setting", the user_power_level shouldn't be available to the driver but rather be an internal value used to calculate the value for the driver. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Allow to set channel in adhoc properlyAlina Friedrichsen2009-01-29
| | | | | | | | | | | The last patch fixes a bug that it was not possible to set the channel manually in the ad hoc mode properly. Please commit this patches so that we don't need the proprietary Broadcom driver in the near future anymore. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Fix tx power settingVasanthakumar Thiagarajan2009-01-29
| | | | | | | | | | | | | power_level in ieee80211_conf is being used for more than one purpose. It being used as user configured power limit and the final power limit given to the driver. By doing so, except very first time, the tx power limit is taken from min(chan->max_power, local->hw.conf.power_level) which is not what we want. This patch defines a new memeber in ieee80211_conf which is meant only for user configured power limit. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Enhancements to dynamic power save.Vivek Natarajan2009-01-29
| | | | | | | | This patch enables mac80211 to send a null frame and also to check for tim in the beacon if dynamic power save is enabled. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: A couple of fixes to dynamic power save.Vivek Natarajan2009-01-29
| | | | | | | | | | a) hw_config() should not be called from siwpower() for the drivers which do not support dynamic powersave. b) IEEE80211_HW_NO_STACK_DYNAMIC_PS needs to be verified in set_associated() also before enabling the power save timers. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Scale down to non-HT association with TKIP/WEP as pairwise cipherVasanthakumar Thiagarajan2009-01-29
| | | | | | | | | | | | | | As TKIP is not updated to new security needs which arise when TKIP is used to encrypt A-MPDU aggregated data frames, IEEE802.11n does not allow any cipher other than CCMP (Which has new extensions defined) as pairwise cipher between HT peers. When such configuration (TKIP/WEP in HT) is forced, we still associate in non-HT mode (11a/b/g). Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: implement dynamic power saveKalle Valo2008-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements dynamic power save for mac80211. Basically it means enabling power save mode after an idle period. Implementing it dynamically gives a good compromise of low power consumption and low latency. Some hardware have support for this in firmware, but some require the host to do it. The dynamic power save is implemented by adding an timeout to ieee80211_subif_start_xmit(). The timeout can be enabled from userspace with Wireless Extensions. For example, the command below enables the dynamic power save and sets the time timeout to 500 ms: iwconfig wlan0 power timeout 500m Power save now only works with devices which handle power save in firmware. It's also disabled by default and the heuristics when and how to enable is considered as a policy decision and will be left for the userspace to handle. In case the firmware has support for this, drivers can disable this feature with IEEE80211_HW_NO_STACK_DYNAMIC_PS. Big thanks to Johannes Berg for the help with the design and code. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 20:48:19 -0500