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* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner2019-06-191-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* mac80211: Add airtime accounting and scheduling to TXQsToke Høiland-Jørgensen2019-01-191-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* mac80211: free skb fraglist before freeing the skbSara Sharon2018-12-191-0/+5
| | | | | | | | | | | | | | | | mac80211 uses the frag list to build AMSDU. When freeing the skb, it may not be really freed, since someone is still holding a reference to it. In that case, when TCP skb is being retransmitted, the pointer to the frag list is being reused, while the data in there is no longer valid. Since we will never get frag list from the network stack, as mac80211 doesn't advertise the capability, we can safely free and nullify it before releasing the SKB. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: ignore tx status for PS stations in ieee80211_tx_status_extFelix Fietkau2018-12-051-0/+2
| | | | | | | | | | | | Make it behave like regular ieee80211_tx_status calls, except for the lack of filtered frame processing. This fixes spurious low-ack triggered disconnections with powersave clients connected to an AP. Fixes: f027c2aca0cf4 ("mac80211: add ieee80211_tx_status_noskb") Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: implement ieee80211_tx_rate_update to update rateAnilkumar Kolli2018-10-121-0/+19
| | | | | | | | | | | | | | | | | | Current mac80211 has provision to update tx status through ieee80211_tx_status() and ieee80211_tx_status_ext(). But drivers like ath10k updates the tx status from the skb except txrate, txrate will be updated from a different path, peer stats. Using ieee80211_tx_status_ext() in two different paths (one for the stats, one for the tx rate) would duplicate the stats instead. To avoid this stats duplication, ieee80211_tx_rate_update() is implemented. Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org> [minor commit message editing, use initializers in code] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix TX status reporting for ieee80211sYuan-Chi Pang2018-09-101-1/+3
| | | | | | | | | | | | | | | | | | TX status reporting to ieee80211s is through ieee80211s_update_metric. There are two problems about ieee80211s_update_metric: 1. The purpose is to estimate the fail probability to a specific link. No need to restrict to data frame. 2. Current implementation does not work if wireless driver does not pass tx_status with skb. Fix this by removing ieee80211_is_data condition, passing ieee80211_tx_status directly to ieee80211s_update_metric, and putting it in both __ieee80211_tx_status and ieee80211_tx_status_ext. Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Always report TX statusAndrei Otcheretianski2018-09-051-5/+2
| | | | | | | | | | | | | If a frame is dropped for any reason, mac80211 wouldn't report the TX status back to user space. As the user space may rely on the TX_STATUS to kick its state machines, resends etc, it's better to just report this frame as not acked instead. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: average ack rssi support for data framesBalaji Pothunoori2018-05-071-0/+2
| | | | | | | | The driver will process the RSSI if available and send it to mac80211. mac80211 will compute the weighted average of ack RSSI for stations. Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Add tx ack signal support in sta infoVenkateswara Naralasetty2018-02-191-2/+11
| | | | | | | | This allows users to get ack signal strength of last transmitted frame. Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* cfg80211: send ack_signal to user in probe client responseVenkateswara Naralasetty2018-02-191-1/+1
| | | | | | | | | This patch provides support to get ack signal in probe client response and in station info from user. Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org> [squash in compilation fixes] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* networking: make skb_push & __skb_push return void pointersJohannes Berg2017-06-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) @@ expression SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - fn(SKB, LEN)[0] + *(u8 *)fn(SKB, LEN) Note that the last part there converts from push(...)[0] to the more idiomatic *(u8 *)push(...). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: Invoke TX LED in more code pathsBjorn Andersson2017-05-301-2/+2
| | | | | | | | | | | | | | ieee80211_tx_status() is only one of the possible ways a driver can report a handled packet, some drivers call this for every packet while others calls it rarely or never. In order to invoke the TX LED in the non-status reporting cases this patch pushes the call to ieee80211_led_tx() into ieee80211_report_used_skb(), which is shared between the various code paths. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add ieee80211_tx_status_extFelix Fietkau2017-04-281-28/+46
| | | | | | | | | | | | | | | | This allows the driver to pass in struct ieee80211_tx_status directly. Make ieee80211_tx_status_noskb a wrapper around it. As with ieee80211_tx_status_noskb, there is no _ni variant of this call, because it probably won't be needed. Even if the driver won't provide any extra status info other than what's in struct ieee80211_tx_info already, it can optimize status reporting this way by passing in the station pointer. Signed-off-by: Felix Fietkau <nbd@nbd.name> [use C99 initializers] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: move ieee80211_tx_status_noskb below ieee80211_tx_statusFelix Fietkau2017-04-281-58/+58
| | | | | | | Makes further cleanups more readable Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: make rate control tx status API more extensibleFelix Fietkau2017-04-281-2/+9
| | | | | | | | | | | Rename .tx_status_noskb to .tx_status_ext and pass a new on-stack struct ieee80211_tx_status instead of struct ieee80211_tx_info. This struct can be used to pass extra information, e.g. for dynamic tx power control Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: don't parse encrypted management frames in ieee80211_frame_ackedEmmanuel Grumbach2017-04-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | ieee80211_frame_acked is called when a frame is acked by the peer. In case this is a management frame, we check if this an SMPS frame, in which case we can update our antenna configuration. When we parse the management frame we look at the category in case it is an action frame. That byte sits after the IV in case the frame was encrypted. This means that if the frame was encrypted, we basically look at the IV instead of looking at the category. It is then theorically possible that we think that an SMPS action frame was acked where really we had another frame that was encrypted. Since the only management frame whose ack needs to be tracked is the SMPS action frame, and that frame is not a robust management frame, it will never be encrypted. The easiest way to fix this problem is then to not look at frames that were encrypted. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* Merge tag 'mac80211-for-davem-2017-02-28' of ↵David S. Miller2017-03-011-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== First round of fixes - details in the commits: * use a valid hrtimer clock ID in mac80211_hwsim * don't reorder frames prior to BA session * flush a delayed work at suspend so the state is all valid before suspend/resume * fix packet statistics in fast-RX, the RX packets counter increment was simply missing * don't try to re-transmit filtered frames in an aggregation session * shorten (for tracing) a debug message * typo fix in another debug message * fix nul-termination with HWSIM_ATTR_RADIO_NAME in hwsim * fix mgmt RX processing when station is looked up by driver/device ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * mac80211: don't handle filtered frames within a BA sessionFelix Fietkau2017-02-271-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When running a BA session, the driver (or the hardware) already takes care of retransmitting failed frames, since it has to keep the receiver reorder window in sync. Adding another layer of retransmit around that does not improve anything. In fact, it can only lead to some strong reordering with huge latency. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds2017-02-281-3/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull IDR rewrite from Matthew Wilcox: "The most significant part of the following is the patch to rewrite the IDR & IDA to be clients of the radix tree. But there's much more, including an enhancement of the IDA to be significantly more space efficient, an IDR & IDA test suite, some improvements to the IDR API (and driver changes to take advantage of those improvements), several improvements to the radix tree test suite and RCU annotations. The IDR & IDA rewrite had a good spin in linux-next and Andrew's tree for most of the last cycle. Coupled with the IDR test suite, I feel pretty confident that any remaining bugs are quite hard to hit. 0-day did a great job of watching my git tree and pointing out problems; as it hit them, I added new test-cases to be sure not to be caught the same way twice" Willy goes on to expand a bit on the IDR rewrite rationale: "The radix tree and the IDR use very similar data structures. Merging the two codebases lets us share the memory allocation pools, and results in a net deletion of 500 lines of code. It also opens up the possibility of exposing more of the features of the radix tree to users of the IDR (and I have some interesting patches along those lines waiting for 4.12) It also shrinks the size of the 'struct idr' from 40 bytes to 24 which will shrink a fair few data structures that embed an IDR" * 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax: (32 commits) radix tree test suite: Add config option for map shift idr: Add missing __rcu annotations radix-tree: Fix __rcu annotations radix-tree: Add rcu_dereference and rcu_assign_pointer calls radix tree test suite: Run iteration tests for longer radix tree test suite: Fix split/join memory leaks radix tree test suite: Fix leaks in regression2.c radix tree test suite: Fix leaky tests radix tree test suite: Enable address sanitizer radix_tree_iter_resume: Fix out of bounds error radix-tree: Store a pointer to the root in each node radix-tree: Chain preallocated nodes through ->parent radix tree test suite: Dial down verbosity with -v radix tree test suite: Introduce kmalloc_verbose idr: Return the deleted entry from idr_remove radix tree test suite: Build separate binaries for some tests ida: Use exceptional entries for small IDAs ida: Move ida_bitmap to a percpu variable Reimplement IDR and IDA using the radix tree radix-tree: Add radix_tree_iter_delete ...
| * idr: Return the deleted entry from idr_removeMatthew Wilcox2017-02-131-3/+1
| | | | | | | | | | | | | | | | | | | | It is a relatively common idiom (8 instances) to first look up an IDR entry, and then remove it from the tree if it is found, possibly doing further operations upon the entry afterwards. If we change idr_remove() to return the removed object, all of these users can save themselves a walk of the IDR tree. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
* | mac80211: use helper function to access ieee802_1d_to_ac[]Amadeusz Sławiński2017-01-261-1/+1
| | | | | | | | | | | | | | | | cleanup patch to make use of ieee80211_ac_from_tid() to retrieve ac from ieee802_1d_to_ac[] Signed-off-by: Amadeusz Sławiński <amadeusz.slawinski@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: set wifi_acked[_valid] bits for transmitted SKBsJohannes Berg2017-01-121-0/+5
| | | | | | | | | | | | | | | | | | There may be situations in which the in-kernel originator of an SKB cares about its wifi transmission status. To have that, set the wifi_acked[_valid] bits before freeing/orphaning the SKB if the destructor is set. The originator can then use it in there. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: Remove unused 'rates_idx' variableKirtika Ruchandani2016-12-131-2/+1
|/ | | | | | | | | | | | | | | | | | Commit f027c2aca0cf introduced 'rates_idx' in ieee80211_tx_status_noskb but did not use it. Compiling with W=1 gives the following warning, fix it. mac80211/status.c: In function ‘ieee80211_tx_status_noskb’: mac80211/status.c:636:6: warning: variable ‘rates_idx’ set but not used [-Wunused-but-set-variable] This is a harmless warning, and is only being fixed to reduce the noise generated with W=1. Fixes: f027c2aca0cf ("mac80211: add ieee80211_tx_status_noskb") Cc: Johannes Berg <johannes.berg@intel.com> Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Kirtika Ruchandani <kirtika@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Use rhltable instead of rhashtableHerbert Xu2016-09-201-5/+2
| | | | | | | | | | | | | | | | | | | | | mac80211 currently uses rhashtable with insecure_elasticity set to true. The latter is because of duplicate objects. What's more, mac80211 walks the rhashtable chains by hand which is broken as rhashtable may contain multiple tables due to resizing or rehashing. This patch fixes it by converting it to the newly added rhltable interface which is designed for use with duplicate objects. With rhltable a lookup returns a list of objects instead of a single one. This is then fed into the existing for_each_sta_info macro. This patch also deletes the sta_addr_hash function since rhashtable defaults to jhash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: allow driver to handle packet-loss mechanismRajkumar Manoharan2016-09-151-0/+6
| | | | | | | | | | | | | | Based on consecutive msdu failures, mac80211 triggers CQM packet-loss mechanism. Drivers like ath10k that have its own connection monitoring algorithm, offloaded to firmware for triggering station kickout. In case of station kickout, driver will report low ack status by mac80211 API (ieee80211_report_low_ack). This flag will enable the driver to completely rely on firmware events for station kickout and bypass mac80211 packet loss mechanism. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: refactor monitor representation in sdataAviya Erenfeld2016-09-121-1/+1
| | | | | | | | | | | Insert the u32 monitor flags variable in a new structure that represents a monitor interface. This will allow to add more configuration variables to that structure which will happen in an upcoming change. Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: End the MPSP even if EOSP frame was not ackedMasashi Honma2016-08-051-7/+7
| | | | | | | | | | | | If QoS frame with EOSP (end of service period) subfield=1 sent by local peer was not acked by remote peer, local peer did not end the MPSP. This prevents local peer from going to DOZE state. And if the remote peer goes away without closing connection, local peer continues AWAKE state and wastes battery. Signed-off-by: Masashi Honma <masashi.honma@gmail.com> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add separate last_ack variableJohannes Berg2016-04-061-2/+2
| | | | | | | | | | | Instead of touching the rx_stats.last_rx from the status path, introduce and use a status_stats.last_ack variable. This will make rx_stats.last_rx indicate when the last frame was received, making it available for real "last_rx" and statistics gathering; statistics, when done per-CPU, will need to figure out which place was updated last for those items where the "last" value is exposed. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: use reset to set header pointerZhang Shengju2016-03-041-1/+1
| | | | | | | | | Since offset is zero, it's not necessary to use set function. Reset function is straightforward, and will remove the unnecessary add operation in set function. Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: Don't buffer non-bufferable MMPDUsHelmut Schaa2016-01-141-0/+5
| | | | | | | | | | | | | | | | | | Non-bufferable MMPDUs are sent out to STAs even while in PS mode (for example probe responses). Applying filtered frame handling for these doesn't seem to make much sense and will only create more air utilization when the STA wakes up. Hence, apply filtered frame handling only for bufferable MMPDUs. Discovered while testing an old VOIP phone that started probing for APs while in PS mode. The mac80211/ath9k AP where the STA is associated would reply with a probe response but the phone sometimes moved to a new channel already and couldn't ack the probe response anymore. In that case mac80211 applied filtered frame handling for the un-acked probe response. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* Merge tag 'mac80211-next-for-davem-2015-10-21' of ↵David S. Miller2015-10-221-25/+28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== Here's another set of patches for the current cycle: * I merged net-next back to avoid a conflict with the * cfg80211 scheduled scan API extensions * preparations for better scan result timestamping * regulatory cleanups * mac80211 statistics cleanups * a few other small cleanups and fixes ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * mac80211: move station statistics into sub-structsJohannes Berg2015-10-211-22/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * mac80211: remove sta->last_ack_signalJohannes Berg2015-10-211-3/+0
| | | | | | | | | | | | | | | | 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>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-10-201-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/usb/asix_common.c net/ipv4/inet_connection_sock.c net/switchdev/switchdev.c In the inet_connection_sock.c case the request socket hashing scheme is completely different in net-next. The other two conflicts were overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * mac80211: fix handling of PS filtering with fast-xmitFelix Fietkau2015-09-241-0/+1
| | | | | | | | | | | | | | | | Fixes dropped packets in the tx path in case a non-PS station triggers the tx filter. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: Split sending tx'ed frames to monitor interfaces into its own functionHelmut Schaa2015-09-221-49/+59
|/ | | | | | | | This allows ieee80211_tx_monitor to be used directly for sending 802.11 frames to all monitor interfaces. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove always true conditionDan Carpenter2015-08-131-4/+1
| | | | | | | | | The outside if statement checks that IEEE80211_TX_INTFL_MLME_CONN_TX is set so this condition is always true. Checking twice upsets the static checkers. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: convert HW flags to unsigned long bitmapJohannes Berg2015-06-101-7/+6
| | | | | | | | | | | | | | | As we're running out of hardware capability flags pretty quickly, convert them to use the regular test_bit() style unsigned long bitmaps. This introduces a number of helper functions/macros to set and to test the bits, along with new debugfs code. The occurrences of an explicit __clear_bit() are intentional, the drivers were never supposed to change their supported bits on the fly. We should investigate changing this to be a per-frame flag. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: stop using pointers as userspace cookiesJohannes Berg2015-06-021-13/+14
| | | | | | | | | | | | | | Even if the pointers are really only accessible to root and used pretty much only by wpa_supplicant, this is still not great; even for debugging it'd be easier to have something that's easier to read and guaranteed to never get reused. With the recent change to make mac80211 create an ack_skb for the mgmt-tx path this becomes possible, only the client probe method needs to also allocate an ack_skb, and we can store the cookie in that skb. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: copy nl80211 mgmt TX SKB for statusJohannes Berg2015-06-021-41/+68
| | | | | | | | | | | | | | | | When we return the TX status for an nl80211 mgmt TX SKB, we should also return the original frame with the status to allow userspace to match up the submission (it could also use the cookie but both ways are permissible.) As TX SKBs could be encrypted, at least in the case of ANQP while associated with the AP, copy the original SKB, store it with an ACK frame ID and restructure the status path to use that to return status with the original SKB. Otherwise, userspace (in particular wpa_supplicant) will get confused. Reported-by: Matti Gottlieb <matti.gottlieb@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: move dot11 counters under MAC80211_DEBUG_COUNTERSJohannes Berg2015-05-051-14/+14
| | | | | | | | | | | | | Since these counters can only be read through debugfs, there's very little point in maintaining them all the time. However, even just making them depend on debugfs is pointless - they're not normally used. Additionally a number of them aren't even concurrency safe. Move them under MAC80211_DEBUG_COUNTERS so they're normally not even compiled in. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: use rhashtable for station tableJohannes Berg2015-04-011-2/+6
| | | | | | | | | | | | | | | | | | | | | | We currently have a hand-rolled table with 256 entries and are using the last byte of the MAC address as the hash. This hash is obviously very fast, but collisions are easily created and we waste a lot of space in the common case of just connecting as a client to an AP where we just have a single station. The other common case of an AP is also suboptimal due to the size of the hash table and the ease of causing collisions. Convert all of this to use rhashtable with jhash, which gives us the advantage of a far better hash function (with random perturbation to avoid hash collision attacks) and of course that the hash table grows and shrinks dynamically with chain length, improving both cases above. Use a specialised hash function (using jhash, but with fixed length) to achieve better compiler optimisation as suggested by Sergey Ryazanov. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove TX latency measurement codeJohannes Berg2015-02-281-74/+0
| | | | | | | | | | | | | | | | 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>
* mac80211: remove doubled semicolonJohannes Berg2015-01-161-1/+1
| | | | Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: provide per-TID RX/TX MSDU countersJohannes Berg2015-01-081-2/+13
| | | | | | | | | Implement the new counters cfg80211 can now advertise to userspace. The TX code is in the sequence number handler, which is a bit odd, but that place already knows the TID and frame type, so it was easiest and least impact there. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix dot11MulticastTransmittedFrameCount tested addressEliad Peller2014-12-231-1/+1
| | | | | | | | | | | | | | dot11MulticastTransmittedFrameCount should be updated according to the DA, which might be different from A1. Checking A1 results in the counter being 0 in case of station, as to-DS data frames use A1 for the BSSID. This behaviour is defined in state machines, specifically in the sta_tx_dcf_3.1d(10) description of 802.11-2012. Signed-off-by: Eliad Peller <eliad@wizery.com> [rewrite commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Fix accounting of multicast framesSujith Manoharan2014-12-121-3/+6
| | | | | | | | | | | | | | | | | Since multicast frames are marked as no-ack, using IEEE80211_TX_STAT_ACK to check if they have been successfully transmitted by the driver is incorrect since a driver can choose to ignore transmission status for no-ack frames. This results in incorrect accounting for such frames. To fix this issue, this patch introduces a new flag that can be used by drivers to indicate error-free transmission of no-ack frames. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> [add a note about not setting the flag for non-no-ack frames] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add ieee80211_tx_status_noskbFelix Fietkau2014-11-281-0/+54
| | | | | | | | This can be used by drivers that cannot reliably map tx status information onto specific skbs. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac0211: add a helper function for fixing up tx status ratesFelix Fietkau2014-11-281-19/+33
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: pass tx info to ieee80211_lost_packet instead of an skbFelix Fietkau2014-11-281-4/+3
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 23:27:03 +0000