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2019-12-13mac80211: Turn AQL into an NL80211_EXT_FEATUREToke Høiland-Jørgensen
Instead of just having an airtime flag in debugfs, turn AQL into a proper NL80211_EXT_FEATURE, so drivers can turn it on when they are ready, and so we also expose the presence of the feature to userspace. This also has the effect of flipping the default, so drivers have to opt in to using AQL instead of getting it by default with TXQs. To keep functionality the same as pre-patch, we set this feature for ath10k (which is where it is needed the most). While we're at it, split out the debugfs interface so AQL gets its own per-station debugfs file instead of using the 'airtime' file. [Johannes:] This effectively disables AQL for iwlwifi, where it fixes a number of issues: * TSO in iwlwifi is causing underflows and associated warnings in AQL * HE (802.11ax) rates aren't reported properly so at HE rates, AQL could never have a valid estimate (it'd use 6 Mbps instead of up to 2400!) Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20191212111437.224294-1-toke@redhat.com Fixes: 3ace10f5b5ad ("mac80211: Implement Airtime-based Queue Limit (AQL)") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-27Merge tag 'driver-core-5.5-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the "big" set of driver core patches for 5.5-rc1 There's a few minor cleanups and fixes in here, but the majority of the patches in here fall into two buckets: - debugfs api cleanups and fixes - driver core device link support for boot dependancy issues The debugfs api cleanups are working to slowly refactor the debugfs apis so that it is even harder to use incorrectly. That work has been happening for the past few kernel releases and will continue over time, it's a long-term project/goal The driver core device link support missed 5.4 by just a bit, so it's been sitting and baking for many months now. It's from Saravana Kannan to help resolve the problems that DT-based systems have at boot time with dependancy graphs and kernel modules. Turns out that no one has actually tried to build a generic arm64 kernel with loads of modules and have it "just work" for a variety of platforms (like a distro kernel). The big problem turned out to be a lack of dependency information between different areas of DT entries, and the work here resolves that problem and now allows devices to boot properly, and quicker than a monolith kernel. All of these patches have been in linux-next for a long time with no reported issues" * tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (68 commits) tracing: Remove unnecessary DEBUG_FS dependency of: property: Add device link support for interrupt-parent, dmas and -gpio(s) debugfs: Fix !DEBUG_FS debugfs_create_automount of: property: Add device link support for "iommu-map" of: property: Fix the semantics of of_is_ancestor_of() i2c: of: Populate fwnode in of_i2c_get_board_info() drivers: base: Fix Kconfig indentation firmware_loader: Fix labels with comma for builtin firmware driver core: Allow device link operations inside sync_state() driver core: platform: Declare ret variable only once cpu-topology: declare parse_acpi_topology in <linux/arch_topology.h> crypto: hisilicon: no need to check return value of debugfs_create functions driver core: platform: use the correct callback type for bus_find_device firmware_class: make firmware caching configurable driver core: Clarify documentation for fwnode_operations.add_links() mailbox: tegra: Fix superfluous IRQ error message net: caif: Fix debugfs on 64-bit platforms mac80211: Use debugfs_create_xul() helper media: c8sectpfe: no need to check return value of debugfs_create functions of: property: Add device link support for iommus, mboxes and io-channels ...
2019-11-22mac80211: Implement Airtime-based Queue Limit (AQL)Kan Yan
In order for the Fq_CoDel algorithm integrated in mac80211 layer to operate effectively to control excessive queueing latency, the CoDel algorithm requires an accurate measure of how long packets stays in the queue, AKA sojourn time. The sojourn time measured at the mac80211 layer doesn't include queueing latency in the lower layer (firmware/hardware) and CoDel expects lower layer to have a short queue. However, most 802.11ac chipsets offload tasks such TX aggregation to firmware or hardware, thus have a deep lower layer queue. Without a mechanism to control the lower layer queue size, packets only stay in mac80211 layer transiently before being sent to firmware queue. As a result, the sojourn time measured by CoDel in the mac80211 layer is almost always lower than the CoDel latency target, hence CoDel does little to control the latency, even when the lower layer queue causes excessive latency. The Byte Queue Limits (BQL) mechanism is commonly used to address the similar issue with wired network interface. However, this method cannot be applied directly to the wireless network interface. "Bytes" is not a suitable measure of queue depth in the wireless network, as the data rate can vary dramatically from station to station in the same network, from a few Mbps to over Gbps. This patch implements an Airtime-based Queue Limit (AQL) to make CoDel work effectively with wireless drivers that utilized firmware/hardware offloading. AQL allows each txq to release just enough packets to the lower layer to form 1-2 large aggregations to keep hardware fully utilized and retains the rest of the frames in mac80211 layer to be controlled by the CoDel algorithm. Signed-off-by: Kan Yan <kyan@google.com> [ Toke: Keep API to set pending airtime internal, fix nits in commit msg ] Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20191119060610.76681-4-kyan@google.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-09mac80211: Use debugfs_create_xul() helperGeert Uytterhoeven
Use the new debugfs_create_xul() helper instead of open-coding the same operation. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Johannes Berg <johannes@sipsolutions.net> Link: https://lore.kernel.org/r/20191025094130.26033-3-geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Minor SPDX change conflict. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-14mac80211: no need to check return value of debugfs_create functionsGreg Kroah-Hartman
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22mac80211: update HE IEs to D3.3Liad Kaufman
Update element names and new fields according to D3.3 of the HE spec. Signed-off-by: Liad Kaufman <liad.kaufman@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-01-19mac80211: Add airtime accounting and scheduling to TXQsToke Høiland-Jørgensen
This adds airtime accounting and scheduling to the mac80211 TXQ scheduler. A new callback, ieee80211_sta_register_airtime(), is added that drivers can call to report airtime usage for stations. When airtime information is present, mac80211 will schedule TXQs (through ieee80211_next_txq()) in a way that enforces airtime fairness between active stations. This scheduling works the same way as the ath9k in-driver airtime fairness scheduling. If no airtime usage is reported by the driver, the scheduler will default to round-robin scheduling. For drivers that don't control TXQ scheduling in software, a new API function, ieee80211_txq_may_transmit(), is added which the driver can use to check if the TXQ is eligible for transmission, or should be throttled to enforce fairness. Calls to this function must also be enclosed in ieee80211_txq_schedule_{start,end}() calls to ensure proper locking. The API ieee80211_txq_may_transmit() also ensures that TXQ list will be aligned aginst driver's own round-robin scheduler list. i.e it rotates the TXQ list till it makes the requested node becomes the first entry in TXQ list. Thus both the TXQ list and driver's list are in sync. Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Louie Lu <git@louie.lu> [added debugfs write op to reset airtime counter] Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-11-09mac80211: debugfs: avoid variable shadowingJohannes Berg
We have a macro here that uses an inner variable 'i' that also exists in the outer scope - use '_i' in the macro. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05wireless: align to draft 11ax D3.0Shaul Triebitz
Align to new 11ax draft D3.0. Change/add new MAC and PHY capabilities and update drivers' 11ax capabilities and mac80211's debugfs accordingly. Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05mac80211: add an optional TXQ for other PS-buffered framesJohannes Berg
Some drivers may want to also use the TXQ abstraction with non-data packets that need powersave buffering, so add a hardware flag to allow this. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05mac80211: Add he_capa debugfs entryIdo Yariv
Export HE capabilities information via debugfs, similar to HT & VHT. Signed-off-by: Ido Yariv <idox.yariv@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-01-31mac80211: Add txq flags to debugfsBen Greear
Might help one figure out why aqm drivers may fail to transmit frames sometimes. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-01-22debugfs_sta: Remove unneeded semicolonsChristopher Díaz Riveros
Trivial fix removes unneeded semicolons after switch blocks. Signed-off-by: Christopher Díaz Riveros <chrisadr@gentoo.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-17mac80211: Dynamically set CoDel parameters per stationToke Høiland-Jørgensen
CoDel can be too aggressive if a station sends at a very low rate, leading reduced throughput. This gets worse the more stations are present, as each station gets more bursty the longer the round-robin scheduling between stations takes. This adds dynamic adjustment of CoDel parameters per station. It uses the rate selection information to estimate throughput and sets more lenient CoDel parameters if the estimated throughput is below a threshold (modified by the number of active stations). A new callback is added that drivers can use to notify mac80211 about changes in expected throughput, so the same adjustment can be made for cards that implement rate control in firmware. Drivers that don't use this will just get the default parameters. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> [remove currently unnecessary EXPORT_SYMBOL, fix kernel-doc, remove inline annotation] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-02-07mac80211: add back lost debugfs filesJohannes Berg
Somehow these files were never present or lost, but the code is there and they seem somewhat useful, so add them back. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-19mac80211: improve RX aggregation data in debugfsJohannes Berg
When the driver sets the SUPPORTS_REORDERING_BUFFER hardware flag, the debugfs data for RX aggregation sessions won't even indicate that a session is open. Since the previous fix to store the dialog token separately, we can indicate that it's open and add the token so that there's at least some data (ssn is not available.) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-19mac80211: fix tid_agg_rx NULL dereferenceJohannes Berg
On drivers setting the SUPPORTS_REORDERING_BUFFER hardware flag, we crash when the peer sends an AddBA request while we already have a session open on the seame TID; this is because on those drivers, the tid_agg_rx is left NULL even though the session is valid, and the agg_session_valid bit is set. To fix this, store the dialog tokens outside the tid_agg_rx to be able to compare them to the received AddBA request. Fixes: f89e07d4cf26 ("mac80211: agg-rx: refuse ADDBA Request with timeout update") Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-15mac80211: remove sta_remove_debugfs driver callbackJohannes Berg
No drivers implement this, relying either on the recursive directory removal to remove their debugfs, or not having any to start with. Remove the dead driver callback. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13mac80211: Re-structure aqm debugfs output and keep CoDel stats per txqToke Høiland-Jørgensen
Currently the 'aqm' stats in mac80211 only keeps overlimit drop stats, not CoDel stats. This moves the CoDel stats into the txqi structure to keep them per txq in order to show them in debugfs. In addition, the aqm debugfs output is restructured by splitting it up into three files: One global per phy, one per netdev and one per station, in the appropriate directories. The files are all called aqm, and are only created if the driver supports the wake_tx_queue op (rather than emitting an error on open as previously). Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-31mac80211: add vht cap decode to debugfsBen Greear
This makes it a lot easier to understand the capabilities used by the station: VHT supported cap: 0x300819b2 MAX-MPDU-11454 80Mhz RXLDPC SHORT-GI-80 TXSTBC RXSTBC_1 SU-BEAMFORMER-CAPABLE SU-BEAMFORMEE-CAPABLE BEAMFORMEE-STS: 0x0 SOUNDING-DIMENSIONS: 0x0 MU-BEAMFORMER-CAPABLE MPDU-LENGTH-EXPONENT: 0x0 LINK-ADAPTATION-VHT-MRQ-MFB: 0x0 RX-ANTENNA-PATTERN TX-ANTENNA-PATTERN RX MCS: fffe TX MCS: fffe Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05mac80211: clean up station flags debugfsJohannes Berg
Avoid the really strange %s%s%s expression, use an array of flag names and check that all flags are present. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05mac80211: remove sta_info debugfs sub-structJohannes Berg
Since the previous patch, the struct only has a single member, so remove the struct and leave just the single member. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05mac80211: Remove unused variable in per STA debugfs structMohammed Shafi Shajakhan
Remove unused variable in per STA debugfs structure, 'commit 34e895075e21 ("mac80211: allow station add/remove to sleep")' removed the only user of 'add_has_run'. Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05mac80211: enable starting BA session with custom timeoutSara Sharon
Currently the debugfs entry for starting aggregation session starts it with timeout of 5 seconds. Allow opening a session with a custom timeout (according to spec 0 is no timeout). while at it, refactor the function and remove the magic numbers. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-21mac80211: move station statistics into sub-structsJohannes Berg
Group station statistics by where they're (mostly) updated (TX, RX and TX-status) and group them into sub-structs of the struct sta_info. Also rename the variables since the grouping now makes it obvious where they belong. This makes it easier to identify where the statistics are updated in the code, and thus easier to think about them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-21mac80211: remove sta->last_ack_signalJohannes Berg
This file only feeds a debugfs file that isn't very useful, so remove it. If necessary, we can add other ways to get this information, for example in the NL80211_CMD_PROBE_CLIENT response. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-05mac80211: clean up station debugfsJohannes Berg
Remove items that can be retrieved through nl80211. This also removes two items (tx_packets and tx_bytes) where only the VO counter was exposed since they are split up per AC but in the debugfs file only the first AC was shown. Also remove the useless "dev" file - the stations have long been in a sub-directory of the netdev so there's no need for that any more. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-05mac80211: remove sta->tx_fragments counterJohannes Berg
This counter is unsafe with concurrent TX and is only exposed through debugfs and ethtool. Instead of trying to fix it just remove it for now, if it's really needed then it should be exposed through nl80211 and in a way that drivers that do the fragmentation in the device could support it as well. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-02-28mac80211: remove TX latency measurement codeJohannes Berg
Revert commit ad38bfc916da ("mac80211: Tx frame latency statistics") (along with some follow-up fixes). This code turned out not to be as useful in the current form as we thought, and we've internally hacked it up more, but that's not very suitable for upstream (for now), and we might just do that with tracing instead. Therefore, for now at least, remove this code. We might also need to use the skb->tstamp field for the TCP performance issue, which is more important than the debugging. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19mac80211: introduce TDLS channel switch opsArik Nemtsov
Implement the cfg80211 TDLS channel switch ops and introduce new mac80211 ones for low-level drivers. Verify low-level driver support for the new ops when using the relevant wiphy feature bit. Also verify the peer supports channel switching before passing the command down. Add a new STA flag to track the off-channel state with the TDLS peer and make sure to cancel the channel-switch if the peer STA is unexpectedly removed. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19mac80211: track AP and peer STA TDLS chan-switch supportArik Nemtsov
The AP or peer can prohibit TDLS channel switch via a bit in the extended capabilities IE. Parse the IE and track this bit. Set an appropriate STA flag if both the AP and peer STA support TDLS channel-switching. Add the new STA flag and the missing TDLS_INITIATOR to debugfs. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-09-15Merge tag 'mac80211-next-for-john-2014-09-12' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg <johannes@sipsolutions.net> says: "This time, I have some rate minstrel improvements, support for a very small feature from CCX that Steinar reverse-engineered, dynamic ACK timeout support, a number of changes for TDLS, early support for radio resource measurement and many fixes. Also, I'm changing a number of places to clear key memory when it's freed and Intel claims copyright for code they developed." Conflicts: net/mac80211/iface.c Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-09-08Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2014-09-05mac80211: add Intel Mobile Communications copyrightJohannes Berg
Our legal structure changed at some point (see wikipedia), but we forgot to immediately switch over to the new copyright notice. For files that we have modified in the time since the change, add the proper copyright notice now. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-26mac80211: fix agg_status debugfs file alignmentJohannes Berg
The "RX active" string is too long, so the columns get shifted. Change it to just "RX" to avoid this. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-15mac80211: don't duplicate station QoS capability dataJohannes Berg
We currently track the QoS capability twice: for all peer stations in the WLAN_STA_WME flag, and for any clients associated to an AP interface separately for drivers in the sta->sta.wme field. Remove the WLAN_STA_WME flag and track the capability only in the driver-visible field, getting rid of the limitation that the field is only valid in AP mode. Reviewed-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23mac80211: Use ktime_get_ts()Thomas Gleixner
do_posix_clock_monotonic_gettime() is a leftover from the initial posix timer implementation which maps to ktime_get_ts(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23mac80211: remove weak WEP IV accountingJohannes Berg
Since WEP is practically dead, there seems very little point in keeping WEP weak IV accounting. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04mac80211: fix agg_status debugfs file writeJohannes Berg
Initialize the buffer to all zeroes, otherwise the stack data might be interpreted as the TID, which is likely to fail completely. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02mac80211: Tx frame latency statisticsMatti Gottlieb
Measure TX latency and jitter statistics per station per TID. These Measurements are disabled by default and can be enabled via debugfs. Features included for each station's TID: 1. Keep count of the maximum and average latency of Tx frames. 2. Keep track of many frames arrived in a specific time range (need to enable through debugfs and configure the bins ranges) Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-01mac80211: add debugfs for driver-buffered TID bitmapJohannes Berg
Add a per-station debugfs file indicating the TIDs (as a bitmap) that the driver has data buffered on. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-04-08mac80211: add beacon stats to debugfsBen Greear
Beacon-timeout and number of beacon loss events. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-06mac80211: add VHT capabilities station debugfs fileJohannes Berg
Add a new debugfs file to view a station's VHT capabilities. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-04mac80211: mesh power save basicsMarco Porsch
Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-12-11net: remove obsolete simple_strto<foo>Abhijit Pawar
This patch removes the redundant occurences of simple_strto<foo> Signed-off-by: Abhijit Pawar <abhi.c.pawar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-10net: remove obsolete simple_strto<foo>Abhijit Pawar
This patch replace the obsolete simple_strto<foo> with kstrto<foo> Signed-off-by: Abhijit Pawar <abhi.c.pawar@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-29mac80211: add debugfs file for last rx rateSaravana
Add a debugfs file showing the rate at which the last packet is received. Signed-off-by: Saravana <saravanad@posedge.com> [fix whitespace] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-11-29mac80211: add debugfs file for current tx rateSaravana
Add a debugfs file showing the current tx rate. The information available in the rc_stats file doesn't evidently provides us the current tx rate. This patch adds the support for the same. Signed-off-by: Saravana <saravanad@posedge.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>