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path: root/include/net/mac80211.h
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2012-03-13mac80211: rename bss_conf timestamp to last_tsfJohannes Berg
This value is not really very useful by itself, yet some drivers (including iwlwifi until I can figure out what it should do) use it. At least rename it to "last_tsf" to indicate the meaning and add a note that it may be really old. I suspect the value may become useful combined with the rx_status->mactime, but we don't (yet) store that value and pass it to the driver. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-12mac80211: remove tx_syncJohannes Berg
When the station state callback was added, this was no longer needed in theory. With the iwlwifi changes to remove use of it landing, we can kill the entire tx-sync framework again, RIP. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-08mac80211: update ieee80211_tx_rate_control kerneldocSimon Wunderlich
* add entry for rate_idx_mcs_mask * fix order of entries to represent the structs' order Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-05mac80211: add an rx flag for ignoring a packet's signal strengthFelix Fietkau
For A-MPDU rx it makes sense to only process the signal strength once per aggregate instead of once per subframe. Additonally, some hardware (e.g. Atheros) only provides valid signal strength information for the last subframe. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-29mac80211: handle non-bufferable MMPDUs correctlyJohannes Berg
This renames the IEEE80211_TX_CTL_POLL_RESPONSE TX flag to IEEE80211_TX_CTL_NO_PS_BUFFER and also uses it for non-bufferable MMPDUs (all MMPDUs but deauth, disassoc and action frames.) Previously, mac80211 would let the MMPDU through but not set the flag so drivers supporting some hardware aids for avoiding the PS races would then reject the frame. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-06mac80211: support hw scan while idleEliad Peller
Currently, mac80211 goes to idle-off before starting a scan. However, some devices that implement hw scan might not need going idle-off in order to perform a hw scan, and thus saving some energy and simplifying their state machine. (Note that this is also the case for sched scan - it currently doesn't make mac80211 go idle-off) Add a new flag to indicate support for hw scan while idle. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-06mac80211: add sta_state callbackJohannes Berg
(based on Eliad's patch) Add a callback to notify the low-level driver whenever the state of a station changes. The driver is only notified when the station is actually in the mac80211 hash table, not for pre-insert state transitions. To allow the driver to replace sta_add/remove calls with this, call extra transitions with the NOTEXIST state. This callback can fail, so we need to be careful in handling it when a station is inserted, particularly in the IBSS case where we still keep the station entry around for mac80211 purposes. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-30mac80211: add support for mcs masksSimon Wunderlich
* Handle MCS masks set by the user. * Match rates provided by the rate control algorithm to the mask set, also in HT mode, and switch back to legacy mode if necessary. * add debugfs files to observate the rate selection Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-27mac80211: make CQM RSSI support per virtual interfaceJohannes Berg
Similar to the previous beacon filtering patch, make CQM RSSI support depend on the flags that the driver set for virtual interfaces. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-27mac80211: make beacon filtering per virtual interfaceJohannes Berg
Due to firmware limitations, we may not be able to support beacon filtering on all virtual interfaces. To allow this in mac80211, introduce per-interface driver capability flags that the driver sets when an interface is added. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits) Kconfig: acpi: Fix typo in comment. misc latin1 to utf8 conversions devres: Fix a typo in devm_kfree comment btrfs: free-space-cache.c: remove extra semicolon. fat: Spelling s/obsolate/obsolete/g SCSI, pmcraid: Fix spelling error in a pmcraid_err() call tools/power turbostat: update fields in manpage mac80211: drop spelling fix types.h: fix comment spelling for 'architectures' typo fixes: aera -> area, exntension -> extension devices.txt: Fix typo of 'VMware'. sis900: Fix enum typo 'sis900_rx_bufer_status' decompress_bunzip2: remove invalid vi modeline treewide: Fix comment and string typo 'bufer' hyper-v: Update MAINTAINERS treewide: Fix typos in various parts of the kernel, and fix some comments. clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR gpio: Kconfig: drop unknown symbol 'CS5535_GPIO' leds: Kconfig: Fix typo 'D2NET_V2' sound: Kconfig: drop unknown symbol ARCH_CLPS7500 ... Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new kconfig additions, close to removed commented-out old ones)
2011-12-19mac80211: handle SMPS action framesJohannes Berg
When a peer changes SMPS state we should update rate control so it doesn't have to detect it by itself. It can't detect "dynamic" mode anyway since that just requires rts-cts handshaking. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-02treewide: Fix typos in various parts of the kernel, and fix some comments.Justin P. Mattock
The below patch fixes some typos in various parts of the kernel, as well as fixes some comments. Please let me know if I missed anything, and I will try to get it changed and resent. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-11-21mac80211: transmit fragment list to driversJohannes Berg
Drivers can usually handle fragmented packets much easier when they get the entire list of fragments at once. The only thing they need to do is keep enough space on the queues for up to ten fragments of a single MSDU. This allows them to implement this with a new operation tx_frags. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-11mac80211: Save probe response data for bssArik Nemtsov
Allow setting a probe response template for an interface operating in AP mode. Low level drivers are notified about changes in the probe response template and are able to retrieve a copy of the current probe response. This data can, for example, be uploaded to hardware as a template. Signed-off-by: Guy Eilam <guy@wizery.com> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09mac80211: implement wifi TX statusJohannes Berg
Implement the socket wifi TX status error queue reflection in mac80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09mac80211: add helper to free TX skbJohannes Berg
Drivers that need to drop a frame before it can be transmitted will usually simply free that frame. This is currently fine, but in the future it'll be needed to tell mac80211 about this case, so add a new routine that frees a TX skb. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2011-11-08mac80211: support adding IV-room in the skb for CCMP keysArik Nemtsov
Some cards can generate CCMP IVs in HW, but require the space for the IV to be pre-allocated in the frame at the correct offset. Add a key flag that allows us to achieve this. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-04mac80211: warn only once about not finding a rateJohannes Berg
The warning really shouldn't happen, but until we find the reason why it does don't spew it all the time, just once is enough to know we've hit it. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14mac80211: Populate radiotap header with MCS info for TX framesHelmut Schaa
mac80211 already filled in the MCS rate info for rx'ed frames but tx'ed frames that are sent to a monitor interface during the status callback lack this information. Add the radiotap fields for MCS info to ieee80211_tx_status_rtap_hdr and populate them when sending tx'ed frames to the monitors. The needed headroom is only extended by one byte since we don't include legacy rate information in the rtap header for HT frames. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-11mac80211: parse radiotap header earlierJohannes Berg
We can now move the radiotap header parsing into ieee80211_monitor_start_xmit(). This moves it out of the hotpath, and also helps the code since now the radiotap header will no longer be present in ieee80211_xmit() etc. which is easier to understand. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-11mac80211: move fragment flag to info flag as dont-fragmentJohannes Berg
The purpose of this is two-fold: 1) by moving it out of tx_data.flags, we can in another patch move the radiotap parsing so it no longer is in the hotpath 2) if a device implements fragmentation but can optionally skip it, the radiotap request for not doing fragmentation may be honoured Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-03mac80211: pass vif param to conf_tx() callbackEliad Peller
tx params should be configured per interface. add ieee80211_vif param to the conf_tx callback, and change all the drivers that use this callback. The following spatch was used: @rule1@ struct ieee80211_ops ops; identifier conf_tx_op; @@ ops.conf_tx = conf_tx_op; @rule2@ identifier rule1.conf_tx_op; identifier hw, queue, params; @@ conf_tx_op ( - struct ieee80211_hw *hw, + struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params) {...} Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-03mac80211: Send nullfunc frames at lower rate during connection monitorRajkumar Manoharan
Recently mac80211 was changed to use nullfunc instead of probe request for connection monitoring for tx ack status reporting hardwares. Sometimes in congested network, STA got disconnected quickly after the association. It was observered that the rate control was not adopted to environment due to minimal transmission. As the nullfunc are used for monitoring purpose, these frames should not be sacrificed for rate control updation. So it is better to send the monitoring null func frames at minimum rate that could help to retain the connection. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: document client powersaveJohannes Berg
With the addition of uAPSD and driver buffering the powersave handling has gotten quite complex. Add a section to the documentation to explain it for anyone wanting to implement it. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: allow out-of-band EOSP notificationJohannes Berg
iwlwifi has a separate EOSP notification from the device, and to make use of that properly it needs to be passed to mac80211. To be able to mix with tx_status_irqsafe and rx_irqsafe it also needs to be an "_irqsafe" version in the sense that it goes through the tasklet, the actual flag clearing would be IRQ-safe but doing it directly would cause reordering issues. This is needed in the case of a P2P GO going into an absence period without transmitting any frames that should be driver-released as in this case there's no other way to inform mac80211 that the service period ended. Note that for drivers that don't use the _irqsafe functions another version of this function will be required. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: explicitly notify drivers of frame releaseJohannes Berg
iwlwifi needs to know the number of frames that are going to be sent to a station while it is asleep so it can properly handle the uCode blocking of that station. Before uAPSD, we got by by telling the device that a single frame was going to be released whenever we encountered IEEE80211_TX_CTL_POLL_RESPONSE. With uAPSD, however, that is no longer possible since there could be more than a single frame. To support this model, add a new callback to notify drivers when frames are going to be released. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: reply only once to each PS-pollJohannes Berg
If a PS-poll frame is retried (but was received) there is no way to detect that since it has no sequence number. As a consequence, the standard asks us to not react to PS-poll frames until the response to one made it out (was ACKed or lost). Implement this by using the WLAN_STA_SP flags to also indicate a PS-Poll "service period" and the IEEE80211_TX_STATUS_EOSP flag for the response packet to indicate the end of the "SP" as usual. We could use separate flags, but that will most likely completely confuse drivers, and while the standard doesn't exclude simultaneously polling using uAPSD and PS-Poll, doing that seems quite problematic. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: implement uAPSDJohannes Berg
Add uAPSD support to mac80211. This is probably not possible with all devices, so advertising it with the cfg80211 flag will be left up to drivers that want it. Due to my previous patches it is now a fairly straight-forward extension. Drivers need to have accurate TX status reporting for the EOSP frame. For drivers that buffer themselves, the provided APIs allow releasing the right number of frames, but then drivers need to set EOSP and more-data themselves. This is documented in more detail in the new code itself. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: allow releasing driver-buffered framesJohannes Berg
If there are frames for a station buffered in the driver, mac80211 announces those in the TIM IE but there's no way to release them. Add new API to release such frames and use it when the station polls for a frame. Since the API will soon also be used for uAPSD it is easily extensible. Note that before this change drivers announcing driver-buffered frames in the TIM bit actually will respond to a PS-Poll with a potentially lower priority frame (if there are any frames buffered in mac80211), after this patch a driver that hasn't been changed will no longer respond at all. This only affects ath9k, which will need to be fixed to implement the new API. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: split PS buffers into ACsJohannes Berg
For uAPSD support we'll need to have per-AC PS buffers. As this is a major undertaking, split the buffers before really adding support for uAPSD. This already makes some reference to the uapsd_queues variable, but for now that will never be non-zero. Since book-keeping is complicated, also change the logic for keeping a maximum of frames only and allow 64 frames per AC (up from 128 for a station). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: let drivers inform it about per TID buffered framesJohannes Berg
For uAPSD implementation, it is necessary to know on which ACs frames are buffered. mac80211 obviously knows about the frames it has buffered itself, but with aggregation many drivers buffer frames. Thus, mac80211 needs to be informed about this. For now, since we don't have APSD in any form, this will unconditionally set the TIM bit for the station but later with uAPSD only some ACs might cause the TIM bit to be set. ath9k is the only driver using this API and I only modify it in the most basic way, it won't be able to implement uAPSD with this yet. But it can't do that anyway since there's no way to selectively release frames to the peer yet. Since drivers will buffer frames per TID, let them inform mac80211 on a per TID basis, mac80211 will then sort out the AC mapping itself. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30mac80211: standardize adding supported rates IEsArik Nemtsov
Relocate the mesh implementation of adding the (extended) supported rates IE to util.c, anticipating its use by other parts of mac80211. Signed-off-by: Arik Nemtsov <arik@wizery.com> Cc: Kalyan C Gaddam <chakkal@iit.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27mac80211: Send the management frame at requested rateRajkumar Manoharan
Whenever the scan request or tx_mgmt is requesting not to use CCK rate for managemet frames through NL80211_ATTR_TX_NO_CCK_RATE attribute, then mac80211 should select appropriate least non-CCK rate. This could help to send P2P probes and P2P action frames at non 11b rates without diabling 11b rates globally. Cc: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27mac80211: add ieee80211_vif param to tsf functionsEliad Peller
TSF can be kept per vif. Add ieee80211_vif param to set/get/reset_tsf, and move the debugfs entries to the per-vif directory. Update all the drivers that implement these callbacks. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-20mac80211: fix indentationAlexander Simon
Signed-off-by: Alexander Simon <an.alexsimon@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-16nl80211/cfg80211/mac80211: fix wme docsEliad Peller
Add/fix some missing docs. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-14mac80211: add ssid config to bss information in AP-modeArik Nemtsov
Set SSID information from nl80211 beacon parameters. Advertise changes in SSID to low level drivers. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-14mac80211: make ieee80211_send_bar available for driversFelix Fietkau
To properly maintain the peer's block ack window, the driver needs to be able to control the new starting sequence number that is sent along with the BlockAckReq frame. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13mac80211: add flag to indicate HW only Tx-agg setup supportArik Nemtsov
When this flag is set, Tx A-MPDU sessions will not be started by mac80211. This flag is required for devices that support Tx A-MPDU setup in hardware. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-26mac80211: add uapsd_queues and max_sp params fieldsEliad Peller
Add uapsd_queues and max_sp fields to ieee80211_sta. These fields might be needed by low-level drivers in order to configure the AP. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-08mac80211: remove offchannel_tx APIJohannes Berg
For iwlwifi, I decided not to use this API since it just increased the complexity for little gain. Since nobody else intends to use it, let's kill it again. If anybody later needs to have it, we can always revive it then. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-08mac80211: remove linux/wireless.h inclusionJohannes Berg
linux/wireless.h is for wireless extensions only, so mac80211 shouldn't include it since it uses cfg80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-20mac80211: sync driver before TXJohannes Berg
In P2P client mode, the GO (AP) to connect to might have periods of time where it is not available due to powersave. To allow the driver to sync with it and send frames to the GO only when it is available add a new callback tx_sync (and the corresponding finish_tx_sync). These callbacks can sleep unlike the actual TX. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15mac80211: let key iteration get keys in install orderJohannes Berg
ieee80211_iter_keys() currently returns keys in the backward order they were installed in, which is a bit confusing. Add them to the tail of the key list to make sure iterations go in the same order that keys were originally installed in. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-15mac80211: allow driver access to TKIP RX P1KJohannes Berg
When the driver wants to pre-program the TKIP RX phase 1 key, it needs to be able to obtain it for the peer's TA. Add API to allow it to generate it. The generation uses a dummy on-stack context since it doesn't know the RX queue. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-13mac80211: allow driver to disconnect after resumeJohannes Berg
In WoWLAN, devices may use crypto keys for TX/RX and could also implement GTK rekeying. If the driver isn't able to retrieve replay counters and similar information from the device upon resume, or if the device isn't responsive due to platform issues, it isn't safe to keep the connection up as GTK rekey messages from during the sleep time could be replayed against it. The only protection against that is disconnecting from the AP. Modifying mac80211 to do that while it is resuming would be very complex and invasive in the case that the driver requires a reconfig, so do it after it has resumed completely. In that case, however, packets might be replayed since it can then only happen after TX/RX are up again, so mark keys for interfaces that need to disconnect as "tainted" and drop all packets that are sent or received with those keys. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-11mac80211: add driver RSSI threshold eventsMeenakshi Venkataraman
mac80211 maintains a running average of the RSSI when a STA is associated to an AP. Report threshold events to any driver that has registered callbacks for getting RSSI measurements. Implement callbacks in mac80211 so that driver can set thresholds. Add callbacks in mac80211 which is invoked when an RSSI threshold event occurs. mac80211: add tracing to rssi_reports api and remove extraneous fn argument mac80211: scale up rssi thresholds from driver by 16 before storing Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: allow driver to generate P1K for IV32Johannes Berg
In order to support pre-populating the P1K cache in iwlwifi hardware for WoWLAN, we need to calculate the P1K for the current IV32. Allow drivers to get the P1K for any given IV32 instead of for a given packet, but keep the packet-based version around as an inline. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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