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* mac80211: add the minstrel_ht rate control algorithmFelix Fietkau2010-06-021-0/+4
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211/mac80211: better channel handlingJohannes Berg2010-05-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently (all tested with hwsim) you can do stupid things like setting up an AP on a certain channel, then adding another virtual interface and making that associate on another channel -- this will make the beaconing to move channel but obviously without the necessary IEs data update. In order to improve this situation, first make the configuration APIs (cfg80211 and nl80211) aware of multi-channel operation -- we'll eventually need that in the future anyway. There's one userland API change and one API addition. The API change is that now SET_WIPHY must be called with virtual interface index rather than only wiphy index in order to take effect for that interface -- luckily all current users (hostapd) do that. For monitor interfaces, the old setting is preserved, but monitors are always slaved to other devices anyway so no guarantees. The second userland API change is the introduction of a per virtual interface SET_CHANNEL command, that hostapd should use going forward to make it easier to understand what's going on (it can automatically detect a kernel with this command). Other than mac80211, no existing cfg80211 drivers are affected by this change because they only allow a single virtual interface. mac80211, however, now needs to be aware that the channel settings are per interface now, and needs to disallow (for now) real multi-channel operation, which is another important part of this patch. One of the immediate benefits is that you can now start hostapd to operate on a hardware that already has a connection on another virtual interface, as long as you specify the same channel. Note that two things are left unhandled (this is an improvement -- not a complete fix): * different HT/no-HT modes currently you could start an HT AP and then connect to a non-HT network on the same channel which would configure the hardware for no HT; that can be fixed fairly easily * CSA An AP we're connected to on a virtual interface might indicate switching channels, and in that case we would follow it, regardless of how many other interfaces are operating; this requires more effort to fix but is pretty rare after all Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Generalize off-channel operation helpers from scan codeJouni Malinen2009-12-281-1/+1
| | | | | | | | | | | The off-channel operations for going into power save mode (station mode) or stop beaconing (AP/IBSS) are not limited to scanning. Move these into a separate file and allow them to be used for other purposes, too. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: generalise work handlingJohannes Berg2009-12-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | In order to use auth/assoc for different purposes other than MLME, it needs to be split up. For other purposes, a generic work handling (potentially on another channel) will be useful. To achieve that, this patch moves much of the MLME work handling out of mlme into a new work API. The API can currently handle probing a specific AP, authentication and association. The MLME previously handled probe/authentication as one step and will continue to do so, but they are separate in the new work handling. Work items are RCU-managed to be able to check for existence of an item for a specific frame in the RX path, but they can be re-used which the MLME right now will do for its combined probe/auth step. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: move TX status handlingJohannes Berg2009-11-181-1/+1
| | | | | | | | It's enough code to have its own file, I think. Especially since I'm going to add to it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: self-contained wext handling where possibleJohannes Berg2009-07-291-1/+0
| | | | | | | | | | | | | | | | | 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>
* mac80211: driver operation debuggingJohannes Berg2009-07-241-0/+3
| | | | | | | | | | This makes mac80211 use the event tracing framework to log all operations as given to the driver. This will need to be extended with more information, but as a start it should be good. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: split IBSS/managed codeJohannes Berg2009-02-271-0/+1
| | | | | | | | | | | | | | | | | 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: restructure HT codeJohannes Berg2009-02-131-1/+1
| | | | | | | | Create two new files, agg-tx.c and agg-rx.c to make it clearer which code is common (ht.c) and which is specific (agg-*.c). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: add suspend/resume callbacksBob Copeland2009-01-291-0/+2
| | | | | | | | | | | | This patch introduces suspend and resume callbacks to mac80211, allowing mac80211 to quiesce its state (bringing down interfaces, removing keys, etc) in preparation for suspend. cfg80211 will call the suspend hook before the device suspend, and resume hook after the device resume. Signed-off-by: Bob Copeland <me@bobcopeland.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: 802.11w - Add BIP (AES-128-CMAC)Jouni Malinen2009-01-291-0/+1
| | | | | | | | | | | | | Implement Broadcast/Multicast Integrity Protocol for management frame protection. This patch adds the needed definitions for the new information element (MMIE) and implementation for the new "encryption" type (though, BIP is actually not encrypting data, it provides only integrity protection). These routines will be used by a follow-on patch that enables BIP for multicast/broadcast robust management 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/cfg80211: check endianness in sparse runsJohannes Berg2008-12-121-0/+2
| | | | | | | | Make sure sparse checks endianness when run on mac80211/cfg80211. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: add the 'minstrel' rate control algorithmFelix Fietkau2008-10-061-0/+4
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: move spectrum management code outJohannes Berg2008-09-111-0/+1
| | | | | | | | | | Like the HT code, this doesn't depend on the STA-mode implementation and can be handled entirely independently. There's only stub code for now, but when it gets filled having it in its own file will be beneficial. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: move some HT code out of mlme.cJohannes Berg2008-09-111-0/+1
| | | | | | | | | Some of the HT code in mlme.c is misplaced: * constants/definitions belong to the ieee80211.h header * code being used in other modes as well shouldn't be there Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: start moving scan code from mlmeJohannes Berg2008-09-111-0/+1
| | | | | | | | | Here's a first patch to move some code from mlme.c to a new file called scan.c. The end result will hopefully be a more manageable mlme.c. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Reimplement WME using ->select_queue().David S. Miller2008-07-171-1/+1
| | | | | | | | | | The only behavior change is that we do not drop packets under any circumstances. If that is absolutely needed, we could easily add it back. With cleanups and help from Johannes Berg. Signed-off-by: David S. Miller <davem@davemloft.net>
* build algorithms into the mac80211 moduleAdrian Bunk2008-06-301-14/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The old infrastructure was: - the default algorithm is built into mac80211 - other algorithms get into their own modules The implementation of this complicated scheme was horrible (just look at net/mac80211/Makefile), and anyone adding a new algorithm would most likely not get it right at his first attempt. This patch therefore builds all enabled algorithms into the mac80211 module. The user interface for the rate control algorithms changes as follows: - first the user can choose which algorithms to enable (currently only MAC80211_RC_PID is available) - if more than one algorithm is enabled (currently not possible since only one algorithm is present) the user then chooses the default one Note: - MAC80211_RC_PID is always enables for CONFIG_EMBEDDED=n Technical changes: - all selected algorithms get into the mac80211 module - net/mac80211/Makefile can now become much less complicated - support for rc80211_pid_algo.c being modular is no longer required - this includes unexporting mesh_plink_broken Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: use multi-queue master netdeviceJohannes Berg2008-05-211-1/+1
| | | | | | | | | | This patch updates mac80211 and drivers to be multi-queue aware and use that instead of the internal queue mapping. Also does a number of cleanups in various pieces of the code that fall out and reduces internal mac80211 state size. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: rename filesJohannes Berg2008-04-081-6/+6
| | | | | | | | This patch renames all mac80211 files (except ieee80211_i.h) to get rid of the useless ieee80211_ prefix. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* the scheduled rc80211-simple.c removalAdrian Bunk2008-03-131-2/+0
| | | | | | Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: enable mesh in KconfigJohannes Berg2008-03-061-0/+6
| | | | | | | Currently marked BROKEN because of endianness problems. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211 API for channels/bitrates, mac80211 and driver conversionJohannes Berg2008-02-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates new cfg80211 wiphy API for channel and bitrate registration and converts mac80211 and drivers to the new API. The old mac80211 API is completely ripped out. All drivers (except ath5k) are updated to the new API, in many cases I expect that optimisations can be done. Along with the regulatory code I've also ripped out the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be unnecessary if the hardware simply gives us whatever channels it wants to support and we then enable/disable them as required, which is pretty much required for travelling. Additionally, the patch adds proper "basic" rate handling for STA mode interface, AP mode interface will have to have new API added to allow userspace to set the basic rate set, currently it'll be empty... However, the basic rate handling will need to be moved to the BSS conf stuff. I do expect there to be bugs in this, especially wrt. transmit power handling where I'm basically clueless about how it should work. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: better rate control algorithm selectionJohannes Berg2008-01-281-14/+27
| | | | | | | | | | | | | | | | | | | | | | This patch changes mac80211's Kconfig/Makefile to: * select between the PID and the SIMPLE rate control algorithm as default * always allow tri-state for the rate control algorithms, building those that are selected 'y' into the mac80211 module (if that is a module, otherwise all into the kernel) * force the default rate control algorithm to be built into mac80211 It also makes both rate control algorithms proper modules again with MODULE_LICENSE etc. Only if EMBEDDED is the user allowed to select "NONE" as default which will cause no algorithm to be selected, this will work only when the driver brings one itself (e.g. iwlwifi drivers). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* rc80211-pid: add debuggingMattias Nissler2008-01-281-2/+9
| | | | | | | | | | | | | This adds a new debugfs file from which rate control relevant events can be read one event per line. The output includes the current time, so graphs can be created showing the rate control parameters. This helps in evaluating and tuning rate control parameters. While at it, we split headers and code for better readability. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: make PID rate control algorithm the defaultStefano Brivio2008-01-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | This makes the new PID TX rate control algorithm the default instead of the rc80211_simple rate control algorithm. The simple algorithm was flawed in several ways: it wasn't responsive at all and didn't age the information it was relying on properly. The PID algorithm allows us to tune characteristics such as responsiveness by adjusting parameters and was found to generally behave better. The default algorithm can be overridden to select simple instead. Which ever algorithm is the default is included as part of the mac80211 module automatically. The other algorithm (simple vs. pid) can be selected for inclusion as well. If EMBEDDED is selected then the choice is available to have no default specified and neither algorithm included in mac80211. The default algorithm can be set through a modparam. While at it, mark rc80211-simple as deprecated, and schedule it for removal. Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: add PID controller based rate control algorithmMattias Nissler2008-01-281-0/+1
| | | | | | | | | | Add a new rate control algorithm based on a PID controller. It samples the percentage of failed frames over time, feeds the result into the controller and uses its output to control the TX rate. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: make simple rate control algorithm built-inJohannes Berg2007-11-101-1/+2
| | | | | | | | | | | | | | Too frequently people do not have module autoloading enabled or fail to install the rate control module correctly, hence their hardware probing fails due to no rate control algorithm being available. This makes the 'simple' algorithm built into the mac80211 module unless EMBEDDED is enabled in which case it can be disabled (eg. if the wanted driver requires another rate control algorithm.) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: rename ieee80211_cfg.c to cfg.cJohannes Berg2007-10-101-1/+1
| | | | | | | | | It's just painful to have the extra ieee80211_ prefix. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MAC80211]: refactor event sendingJohannes Berg2007-10-101-0/+1
| | | | | | | | | | | | | | Create a new file event.c that will contain code to send mac/mlme events to userspace. For now put the Michael MIC failure condition into it and remove sending of that condition via the management interface, hostapd interestingly doesn't do anything when it gets such a packet besides printing a message, it reacts only on the private iwevent. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MAC80211]: introduce util.cJohannes Berg2007-10-101-0/+1
| | | | | | | | Introduce a new file util.c and move a whole bunch of functions into it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: split out some key functions from ieee80211.cJohannes Berg2007-10-101-0/+1
| | | | | | | | | into a new file key.c which doesn't have much code right now but it makes ieee80211.c easier to read. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: split TX path into own fileJohannes Berg2007-10-101-0/+1
| | | | | | Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: move QoS rx handlers into rx.cJohannes Berg2007-10-101-1/+1
| | | | | | | | | This patch moves the QoS handlers into rx.c making it possible to compile wme.c only when NET_SCHED is defined. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: split RX handlers into own fileJohannes Berg2007-10-101-0/+1
| | | | | | Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [PATCH] mac80211: regulatory domain cleanupDaniel Drake2007-07-171-0/+1
| | | | | | | | | | | | | | | | | Currently, a function misnamed ieee80211_init_client() is used to handle regulatory domain control. It is called from ieee80211_register_hwmode(), which typically runs 2 or 3 times (802.11a/b/g), but each time it iterates over all the modes. This patch cleans this up and removes the confusion: ieee80211_init_client was effectively renamed to ieee80211_set_default_regdomain and is now run on a per-mode basis (doesn't have to deal with netdevs). I also moved the regdomain handling code into its own file and added some documentation. Signed-off-by: Daniel Drake <dsd@gentoo.org> Acked-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [MAC80211]: Add debugfs attributes.Jiri Benc2007-05-051-0/+1
| | | | | | | | Export various mac80211 internal variables through debugfs. Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [MAC80211]: Add mac80211 wireless stack.Jiri Benc2007-05-051-0/+19
Add mac80211, the IEEE 802.11 software MAC layer. Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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