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path: root/net/mac80211/ieee80211_i.h
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2020-09-28mac80211: support S1G associationThomas Pedersen1-0/+5
The changes required for associating in S1G are: - apply S1G BSS channel info before assoc - mark all S1G STAs as QoS STAs - include and parse AID request element - handle new Association Response format - don't fail assoc if supported rates element is missing Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-15-thomas@adapt-ip.com [pass skb to ieee80211_add_aid_request_ie(), remove unused variable 'bss'] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-28mac80211: receive and process S1G beaconsThomas Pedersen1-0/+4
S1G beacons are 802.11 Extension Frames, so the fixed header part differs from regular beacons. Add a handler to process S1G beacons and abstract out the fetching of BSSID and element start locations in the beacon body handler. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-14-thomas@adapt-ip.com [don't rename, small coding style cleanups] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-28mac80211: encode listen interval for S1GThomas Pedersen1-0/+1
S1G allows listen interval up to 2^14 * 10000 beacon intervals. In order to do this listen interval needs a scaling factor applied to the lower 14 bits. Calculate this and properly encode the listen interval for S1G STAs. See IEEE802.11ah-2016 Table 9-44a for reference. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-10-thomas@adapt-ip.com [move listen_int_usf into function using it] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-28mac80211: convert S1G beacon to scan resultsThomas Pedersen1-0/+3
This commit finds the correct offset for Information Elements in S1G beacon frames so they can be reported in scan results. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-8-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-28mac80211: support S1G STA capabilitiesThomas Pedersen1-0/+5
Include the S1G Capabilities element in an association request, and support the cfg80211 capability overrides. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-5-thomas@adapt-ip.com [pass skb to ieee80211_add_s1g_capab_ie(), small code style edits] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-28mac80211: Inform AP when returning operating channelLoic Poulain1-1/+0
Because we can miss AP wakeup (beacon) while scanning other channels, it's better go into wakeup state and inform the AP of that upon returning to the operating channel, rather than staying asleep and waiting for the next TIM indicating traffic for us. This saves precious time, especially when we only have 200ms inter- scan period for monitoring the active connection. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Link: https://lore.kernel.org/r/1593420923-26668-1-git-send-email-loic.poulain@linaro.org [rewrite commit message a bit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: Unsolicited broadcast probe response supportAloka Dixit1-0/+7
This patch adds mac80211 support to configure unsolicited broadcast probe response transmission for in-band discovery in 6GHz. Changes include functions to store and retrieve probe response template, and packet interval (0 - 20 TUs). Setting interval to 0 disables the unsolicited broadcast probe response transmission. Signed-off-by: Aloka Dixit <alokad@codeaurora.org> Link: https://lore.kernel.org/r/010101747a946b35-ad25858a-1f1f-48df-909e-dc7bf26d9169-000000@us-west-2.amazonses.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: Add FILS discovery supportAloka Dixit1-0/+7
This patch adds mac80211 support to configure FILS discovery transmission. Changes include functions to store and retrieve FILS discovery template, minimum and maximum packet intervals. Signed-off-by: Aloka Dixit <alokad@codeaurora.org> Link: https://lore.kernel.org/r/20200805011838.28166-3-alokad@codeaurora.org [remove SUPPORTS_FILS_DISCOVERY, driver can just set wiphy info] Link: https://lore.kernel.org/r/010101747a7b3cbb-6edaa89c-436d-4391-8765-61456d7f5f4e-000000@us-west-2.amazonses.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: optimize station connection monitorFelix Fietkau1-2/+0
Calling mod_timer for every rx/tx packet can be quite expensive. Instead of constantly updating the timer, we can simply let it run out and check the timestamp of the last ACK or rx packet to re-arm it. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-9-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-09-18mac80211: rework tx encapsulation offload APIFelix Fietkau1-2/+1
The current API (which lets the driver turn on/off per vif directly) has a number of limitations: - it does not deal with AP_VLAN - conditions for enabling (no tkip, no monitor) are only checked at add_interface time - no way to indicate 4-addr support In order to address this, store offload flags in struct ieee80211_vif (easy to extend for decap offload later). mac80211 initially sets the enable flag, but gives the driver a chance to modify it before its settings are applied. In addition to the .add_interface op, a .update_vif_offload op is introduced, which can be used for runtime changes. If a driver can't disable encap offload at runtime, or if it has some extra limitations, it can simply override the flags within those ops. Support for encap offload with 4-address mode interfaces can be enabled by setting a flag from .add_interface or .update_vif_offload. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-6-nbd@nbd.name [resolved conflict with commit aa2092a9bab3 ("ath11k: add raw mode and software crypto support")] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-08-27mac80211: rename csa counters to countdown countersJohn Crispin1-3/+3
We want to reuse the functions and structs for other counters such as BSS color change. Rename them to more generic names. Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20200811080107.3615705-2-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-31mac80211: add a function for running rx without passing skbs to the stackFelix Fietkau1-1/+1
This can be used to run mac80211 rx processing on a batch of frames in NAPI poll before passing them to the network stack in a large batch. This can improve icache footprint, or it can be used to pass frames via netif_receive_skb_list. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200726110611.46886-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-31mac80211: remove unused flags argument in transmit functionsMathy Vanhoef1-6/+5
The flags argument in transmit functions is no longer being used and can be removed. Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be> Link: https://lore.kernel.org/r/20200723100153.31631-5-Mathy.Vanhoef@kuleuven.be Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-31mac80211: use same flag everywhere to avoid sequence number overwriteMathy Vanhoef1-1/+0
Use the IEEE80211_TX_CTRL_NO_SEQNO flag in ieee80211_tx_info to mark probe requests whose sequence number must not be overwritten. This provides consistency with the radiotap flag that can be set to indicate that the sequence number of an injected frame should not be overwritten. Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be> Link: https://lore.kernel.org/r/20200723100153.31631-4-Mathy.Vanhoef@kuleuven.be Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-31mac80211: improve AQL tx airtime estimationFelix Fietkau1-1/+1
AQL does not take into account that most HT/VHT/HE traffic is A-MPDU aggregated. Because of that, the per-packet airtime overhead is vastly overestimated. Improve it by assuming an average aggregation length of 16 for non-legacy traffic if not using the VO AC queue. This should improve performance with high data rates, especially with multiple stations Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200724182816.18678-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: Add HE 6GHz capabilities element to probe requestIlan Peer1-1/+1
On 6 GHz, the 6 GHz capabilities element should be added, do that. Signed-off-by: Ilan Peer <ilan.peer@intel.com> [add commit message] Link: https://lore.kernel.org/r/20200528213443.8ee764f0cde0.I2b0c66b60e11818c97c9803e04a6a197c6376243@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: use HE 6 GHz band capability and pass it to the driverJohannes Berg1-0/+1
In order to handle 6 GHz AP side, take the HE 6 GHz band capability data and pass it to the driver (which needs it for A-MPDU spacing and A-MPDU length). Link: https://lore.kernel.org/r/1589399105-25472-6-git-send-email-rmanohar@codeaurora.org Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/20200528213443.784e4890d82f.I5f1230d5ab27e84e7bbe88e3645b24ea15a0c146@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: determine chandef from HE 6 GHz operationJohannes Berg1-0/+3
Support connecting to HE 6 GHz APs and mesh networks on 6 GHz, where the HT/VHT information is missing but instead the HE 6 GHz band capability is present, and the 6 GHz Operation information field is used to encode the channel configuration instead of the HT/VHT operation elements. Also add some other bits needed to connect to 6 GHz networks. Link: https://lore.kernel.org/r/1589399105-25472-10-git-send-email-rmanohar@codeaurora.org Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/20200528213443.25687d2695bc.I3f9747c1147480f65445f13eda5c4a5ed4e86757@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: avoid using ext NSS high BW if not supportedJohannes Berg1-1/+5
If the AP advertises inconsistent data, namely it has CCFS1 or CCFS2, but doesn't advertise support for 160/80+80 bandwidth or "Extended NSS BW Support", then we cannot use any MCSes in the the higher bandwidth. Thus, avoid connecting with higher bandwidth since it's less efficient that way. Link: https://lore.kernel.org/r/20200528213443.0e55d40c3ccc.I6fd0b4708ebd087e5e46466c3e91f6efbcbef668@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: build HE operation with 6 GHz oper informationRajkumar Manoharan1-1/+1
Add 6 GHz operation information (IEEE 802.11ax/D6.0, Figure 9-787k) while building HE operation element for non-HE AP. This field is used to determine channel information in the absence of HT/VHT IEs. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-8-git-send-email-rmanohar@codeaurora.org [fix skb allocation size] Link: https://lore.kernel.org/r/20200528193455.76796-1-johannes@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: add HE 6 GHz Band Capability elementRajkumar Manoharan1-0/+2
Construct HE 6 GHz band capability element (IEEE 802.11ax/D6.0, 9.4.2.261) for association request and mesh beacon. The 6 GHz capability information is passed by driver through iftypes caps. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-7-git-send-email-rmanohar@codeaurora.org [handle SMPS, adjust for previous patches, reserve SKB space properly, change to handle SKB directly] Link: https://lore.kernel.org/r/20200528213443.643aa8101111.I3f9747c1147480f65445f13eda5c4a5ed4e86757@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: add HE 6 GHz Band Capabilities into parse extensionRajkumar Manoharan1-0/+1
Handle 6 GHz band capability element parsing for association. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-4-git-send-email-rmanohar@codeaurora.org [some renaming to be in line with previous patches] Link: https://lore.kernel.org/r/20200528213443.a13d7a0b85b0.Ia07584da4fc77aa77c4cc563248d2ce4234ffe5d@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-28mac80211: support control port TX status reportingMarkus Theil1-1/+2
Add support for TX status reporting for the control port TX API; this will be used by hostapd when it moves to the control port TX API. Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200527160334.19224-1-markus.theil@tu-ilmenau.de [fix commit message, it was referring to nl80211] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27nl80211: add ability to report TX status for control port TXMarkus Theil1-1/+2
This adds the necessary capabilities in nl80211 to allow drivers to assign a cookie to control port TX frames (returned via extack in the netlink ACK message of the command) and then later report the frame's status. Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200508144202.7678-2-markus.theil@tu-ilmenau.de [use extack cookie instead of explicit message, recombine patches] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27mac80211: Replace zero-length array with flexible-arrayGustavo A. R. Silva1-1/+1
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] sizeof(flexible-array-member) triggers a warning because flexible array members have incomplete type[1]. There are some instances of code in which the sizeof operator is being incorrectly/erroneously applied to zero-length arrays and the result is zero. Such instances may be hiding some bugs. So, this work (flexible-array member conversions) will also help to get completely rid of those sorts of issues. This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200507185907.GA15102@embeddedor Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-29mac80211: TX legacy rate control for Beacon framesJouni Malinen1-0/+4
Use the Beacon frame specific legacy rate configuration, if specified for AP or mesh, instead of the generic rate mask when selecting the TX rate for Beacon frames. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200425155713.25687-4-jouni@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-24mac80211: Process multicast RX registration for Action framesJouni Malinen1-0/+1
Convert a user space registration for processing multicast Action frames (NL80211_CMD_REGISTER_FRAME with NL80211_ATTR_RECEIVE_MULTICAST) to a new enum ieee80211_filter_flags bit FIF_MCAST_ACTION so that drivers can update their RX filter parameters appropriately, if needed. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200421144815.19175-1-jouni@codeaurora.org [rename variables to rx_mcast_action_reg indicating action frames only] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-24cfg80211: change internal management frame registration APIJohannes Berg1-1/+1
Almost all drivers below cfg80211 get the API wrong (except for cfg80211) and are unable to cope with multiple registrations for the same frame type, which is valid due to the match filter. This seems to indicate the API is wrong, and we should maintain the full information in cfg80211 instead of the drivers. Change the API to no longer inform the driver about individual registrations and unregistrations, but rather every time about the entire state of the entire wiphy and single wdev, whenever it may have changed. This also simplifies the code in cfg80211 as it no longer has to track exactly what was unregistered and can free things immediately. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com> Link: https://lore.kernel.org/r/20200417124300.f47f3828afc8.I7f81ef59c2c5a340d7075fb3c6d0e08e8aeffe07@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-24mac80211: mlme: remove duplicate AID bookkeepingJohannes Berg1-2/+0
Maintain the connection AID only in sdata->vif.bss_conf.aid, not also in sdata->u.mgd.aid. Keep setting that where we set ifmgd->aid before, which has the side effect of exposing the AID to the driver before the station entry (AP) is marked associated, in case it needs it then. Requested-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Tested-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/20200417123802.085d4a322b0c.I2e7a2ceceea8c6880219f9e9ee4d4ac985fd295a@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-03-20mac80211: handle no-preauth flag for control portMarkus Theil1-0/+1
This patch adds support for disabling pre-auth rx over the nl80211 control port for mac80211. Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200312091055.54257-3-markus.theil@tu-ilmenau.de [fix indentation slightly, squash feature enablement] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24mac80211: Support BIGTK configuration for Beacon protectionJouni Malinen1-1/+5
Extend mac80211 key configuration to support the new BIGTK with key index values 6 and 7. Support for actually protecting Beacon frames (adding the MME in AP mode and checking it in STA mode) is covered in separate commits. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200222132548.20835-3-jouni@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24Revert "nl80211: add src and dst addr attributes for control port tx/rx"Johannes Berg1-2/+1
This reverts commit 8c3ed7aa2b9ef666195b789e9b02e28383243fa8. As Jouni points out, there's really no need for this, since the RSN pre-authentication frames are normal data frames, not port control frames (locally). We can still revert this now since it hasn't actually gone beyond -next. Fixes: 8c3ed7aa2b9e ("nl80211: add src and dst addr attributes for control port tx/rx") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://lore.kernel.org/r/20200224101910.b746e263287a.I9eb15d6895515179d50964dec3550c9dc784bb93@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-07nl80211: add src and dst addr attributes for control port tx/rxMarkus Theil1-1/+2
When using control port over nl80211 in AP mode with pre-authentication, APs need to forward frames to other APs defined by their MAC address. Before this patch, pre-auth frames reaching user space over nl80211 control port have no longer any information about the dest attached, which can be used for forwarding to a controller or injecting the frame back to a ethernet interface over a AF_PACKET socket. Analog problems exist, when forwarding pre-auth frames from AP -> STA. This patch therefore adds the NL80211_ATTR_DST_MAC and NL80211_ATTR_SRC_MAC attributes to provide more context information when forwarding. The respective arguments are optional on tx and included on rx. Therefore unaware existing software is not affected. Software which wants to detect this feature, can do so by checking against: NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_MAC_ADDRS Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200115125522.3755-1-markus.theil@tu-ilmenau.de [split into separate cfg80211/mac80211 patches] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-07mac80211: parse also the RSNXE IEShaul Triebitz1-0/+2
Parse also the RSN Extension IE when parsing the rest of the IEs. It will be used in a later patch. Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/20200131111300.891737-21-luca@coelho.fi Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-07mac80211: Remove support for changing AP SMPS modeIlan Peer1-6/+1
The SMPS feature is defined in the specification only to be used by non-AP stations and not by APs, so remove the support for changing the AP's SMPS mode dynamically. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/20200131111300.891737-20-luca@coelho.fi Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-07mac80211: allow changing TX-related netdev featuresJohannes Berg1-0/+7
Set ndev->hw_features as well as ndev->features to allow changing the TX-related features with ethtool. We cannot (yet) change RX-related features since that requires telling the driver about it and we have no API for that yet. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/20200131111300.891737-10-luca@coelho.fi Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-12-13mac80211: add 802.11 encapsulation offloading supportJohn Crispin1-0/+9
This patch adds a new transmit path for hardware that supports 802.11 encapsulation offloading. In those cases 802.3 frames get passed directly to the driver allowing the hardware to handle the encapsulation. Some features such as monitor mode and TKIP would break when encapsulation offloading is enabled. If any of these get enabled, the code will alwyas fallback to the normal sw encapsulation data path. The patch defines a secondary netdev_ops struct that the device gets assigned if 802.11 encap support is available and enabled. The driver needs to enable the support on a per vif basis if it finds that all pre-reqs are meet. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20191125100438.16539-1-john@phrozen.org [reword comments, remove SUPPORTS_80211_ENCAP HW flag, minor cleanups] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-22mac80211: Implement Airtime-based Queue Limit (AQL)Kan Yan1-0/+4
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>
2019-11-22mac80211: Import airtime calculation code from mt76Toke Høiland-Jørgensen1-0/+4
Felix recently added code to calculate airtime of packets to the mt76 driver. Import this into mac80211 so we can use it for airtime queue limit calculations. The airtime.c file is copied verbatim from the mt76 driver, and adjusted to be usable in mac80211. This involves: - Switching to mac80211 data structures. - Adding support for 160 MHz channels and HE mode. - Moving the symbol and duration calculations around a bit to avoid rounding with the higher rates and longer symbol times used for HE rates. The per-rate TX rate calculation is also split out to its own function so it can be used directly for the AQL calculations later. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20191119060610.76681-3-kyan@google.com [fix HE_GROUP_IDX() to use 3 * bw, since there are 3 _gi values] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-09-11mac80211: IBSS: send deauth when expiring inactive STAsJohannes Berg1-1/+2
When we expire an inactive station, try to send it a deauth. This helps if it's actually still around, and just has issues with beacon distribution (or we do), and it will not also remove us. Then, if we have shared state, this may not be reset properly, causing problems; for example, we saw a case where aggregation sessions weren't removed properly (due to the TX start being offloaded to firmware and it relying on deauth for stop), causing a lot of traffic to get lost due to the SN reset after remove/add of the peer. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/20190830112451.21655-9-luca@coelho.fi Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-31mac80211: allow setting spatial reuse parameters from bss_confJohn Crispin1-0/+3
Store the OBSS PD parameters inside bss_conf when bringing up an AP and/or when a station connects to an AP. This allows the driver to configure the HW accordingly. Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190730163701.18836-3-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-29mac80211: add support for the ADDBA extension elementJohn Crispin1-1/+2
HE allows peers to negotiate the aggregation fragmentation level to be used during transmission. The level can be 1-3. The Ext element is added behind the ADDBA request inside the action frame. The responder will then reply with the same level or a lower one if the requested one is not supported. This patch only handles the negotiation part as the ADDBA frames get passed to the ATH11k firmware, which does the rest of the magic for us aswell as generating the requests. Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com> Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190729104512.27615-1-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-29mac80211: propagate HE operation info into bss_confJohn Crispin1-0/+4
Upon a successful assoc a station shall store the content of the HE operation element inside bss_conf so that the driver can setup the hardware accordingly. Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com> Signed-off-by: John Crispin <john@phrozen.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20190729102342.8659-2-john@phrozen.org [use struct copy] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-26mac80211: implement HE support for meshSven Eckelmann1-0/+2
Implement the basics required for supporting high efficiency with mesh: include HE information elements in beacons, probe responses, and peering action frames, and check for compatible HE configurations when peering. Signed-off-by: Sven Eckelmann <seckelmann@datto.com> Forwarded: https://patchwork.kernel.org/patch/11029299/ Link: https://lore.kernel.org/r/20190724163359.3507-2-sven@narfation.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-26mac80211: HE: add Spatial Reuse element parsing supportJohn Crispin1-0/+1
Add support to mac80211 for parsing SPR elements as per P802.11ax_D4.0 section 9.4.2.241. Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com> Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190618061915.7102-2-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-26mac80211: propagate struct ieee80211_tx_status into ieee80211_tx_monitor()John Crispin1-1/+2
This will allow use to report HE rates on the radiotap interface. Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190714154419.11854-3-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-26mac80211: add support for parsing ADDBA_EXT IEsJohn Crispin1-0/+1
ADDBA_EXT IEs can be used to negotiate the BA fragmentation level. Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190713163642.18491-2-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-09Merge branch 'linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "Here is the crypto update for 5.3: API: - Test shash interface directly in testmgr - cra_driver_name is now mandatory Algorithms: - Replace arc4 crypto_cipher with library helper - Implement 5 way interleave for ECB, CBC and CTR on arm64 - Add xxhash - Add continuous self-test on noise source to drbg - Update jitter RNG Drivers: - Add support for SHA204A random number generator - Add support for 7211 in iproc-rng200 - Fix fuzz test failures in inside-secure - Fix fuzz test failures in talitos - Fix fuzz test failures in qat" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (143 commits) crypto: stm32/hash - remove interruptible condition for dma crypto: stm32/hash - Fix hmac issue more than 256 bytes crypto: stm32/crc32 - rename driver file crypto: amcc - remove memset after dma_alloc_coherent crypto: ccp - Switch to SPDX license identifiers crypto: ccp - Validate the the error value used to index error messages crypto: doc - Fix formatting of new crypto engine content crypto: doc - Add parameter documentation crypto: arm64/aes-ce - implement 5 way interleave for ECB, CBC and CTR crypto: arm64/aes-ce - add 5 way interleave routines crypto: talitos - drop icv_ool crypto: talitos - fix hash on SEC1. crypto: talitos - move struct talitos_edesc into talitos.h lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE crypto/NX: Set receive window credits to max number of CRBs in RxFIFO crypto: asymmetric_keys - select CRYPTO_HASH where needed crypto: serpent - mark __serpent_setkey_sbox noinline crypto: testmgr - dynamically allocate crypto_shash crypto: testmgr - dynamically allocate testvec_config crypto: talitos - eliminate unneeded 'done' functions at build time ...
2019-06-21Merge tag 'spdx-5.2-rc6' of ↵Linus Torvalds1-4/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx Pull still more SPDX updates from Greg KH: "Another round of SPDX updates for 5.2-rc6 Here is what I am guessing is going to be the last "big" SPDX update for 5.2. It contains all of the remaining GPLv2 and GPLv2+ updates that were "easy" to determine by pattern matching. The ones after this are going to be a bit more difficult and the people on the spdx list will be discussing them on a case-by-case basis now. Another 5000+ files are fixed up, so our overall totals are: Files checked: 64545 Files with SPDX: 45529 Compared to the 5.1 kernel which was: Files checked: 63848 Files with SPDX: 22576 This is a huge improvement. Also, we deleted another 20000 lines of boilerplate license crud, always nice to see in a diffstat" * tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (65 commits) treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 507 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 506 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 503 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 501 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 498 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 497 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 496 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 490 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 489 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 488 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 487 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 486 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485 ...
2019-06-20net/mac80211: move WEP handling to ARC4 library interfaceArd Biesheuvel1-2/+2
The WEP code in the mac80211 subsystem currently uses the crypto API to access the arc4 (RC4) cipher, which is overly complicated, and doesn't really have an upside in this particular case, since ciphers are always synchronous and therefore always implemented in software. Given that we have no accelerated software implementations either, it is much more straightforward to invoke a generic library interface directly. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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