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Check if atf has been disabled in __ieee80211_schedule_txq() in order to
avoid a given sta is always put to the beginning of the active_txqs list
and never moved to the end since deficit is not decremented in
ieee80211_sta_register_airtime()
Fixes: b4809e9484 ("mac80211: Add airtime accounting and scheduling to TXQs")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/93889406c50f1416214c079ca0b8c9faecc5143e.1608975195.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_tx_h_select_key drops any non-mgmt packets without a key when
encryption is used. This is wrong for nulldata packets that can't be
encrypted and are sent out for probing clients and indicating 4-address
mode.
Reported-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
Fixes: a0761a3017 ("mac80211: drop data frames without key on encrypted links")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201218191525.1168-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When using WEP, the default unicast key needs to be selected, instead of
the STA PTK.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201218184718.93650-4-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When using WEP, the default unicast key needs to be selected, instead of
the STA PTK.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201218184718.93650-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This fixes strlen mismatch problems happening in some .write callbacks
of debugfs.
When trying to configure airtime_flags in debugfs, an error appeared:
ash: write error: Invalid argument
The error is returned from kstrtou16() since a wrong length makes it
miss the real end of input string. To fix this, use count as the string
length, and set proper end of string for a char buffer.
The debug print is shown - airtime_flags_write: count = 2, len = 8,
where the actual length is 2, but "len = strlen(buf)" gets 8.
Also cleanup the other similar cases for the sake of consistency.
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210112032028.7482-1-shayne.chen@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* validate key indices for key deletion
* more preamble support in mac80211
* various 6 GHz scan fixes/improvements
* a common SAR power limitations API
* various small fixes & code improvements
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Merge tag 'mac80211-next-for-net-next-2020-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
A new set of wireless changes:
* validate key indices for key deletion
* more preamble support in mac80211
* various 6 GHz scan fixes/improvements
* a common SAR power limitations API
* various small fixes & code improvements
* tag 'mac80211-next-for-net-next-2020-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
mac80211: add ieee80211_set_sar_specs
nl80211: add common API to configure SAR power limitations
mac80211: fix a mistake check for rx_stats update
mac80211: mlme: save ssid info to ieee80211_bss_conf while assoc
mac80211: Update rate control on channel change
mac80211: don't filter out beacons once we start CSA
mac80211: Fix calculation of minimal channel width
mac80211: ignore country element TX power on 6 GHz
mac80211: use bitfield helpers for BA session action frames
mac80211: support Rx timestamp calculation for all preamble types
mac80211: don't set set TDLS STA bandwidth wider than possible
mac80211: support driver-based disconnect with reconnect hint
cfg80211: support immediate reconnect request hint
mac80211: use struct assignment for he_obss_pd
cfg80211: remove struct ieee80211_he_bss_color
nl80211: validate key indexes for cfg80211_registered_device
cfg80211: include block-tx flag in channel switch started event
mac80211: disallow band-switch during CSA
ieee80211: update reduced neighbor report TBTT info length
cfg80211: Save the regulatory domain when setting custom regulatory
...
====================
Link: https://lore.kernel.org/r/20201211142552.209018-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
xdp_return_frame_bulk() needs to pass a xdp_buff
to __xdp_return().
strlcpy got converted to strscpy but here it makes no
functional difference, so just keep the right code.
Conflicts:
net/netfilter/nf_tables_api.c
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This change registers ieee80211_set_sar_specs to
mac80211_config_ops, so cfg80211 can call it.
Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Abhishek Kumar <kuabhs@chromium.org>
Link: https://lore.kernel.org/r/20201203103728.3034-3-cjhuang@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It should be !is_multicast_ether_addr() in ieee80211_rx_h_sta_process()
for the rx_stats update, below commit remove the !, this patch is to
change it back.
It lead the rx rate "iw wlan0 station dump" become invalid for some
scenario when IEEE80211_HW_USES_RSS is set.
Fixes: 09a740ce35 ("mac80211: receive and process S1G beacons")
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/1607483189-3891-1-git-send-email-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The ssid info of ieee80211_bss_conf is filled in ieee80211_start_ap()
for AP mode. For STATION mode, it is empty, save the info from struct
ieee80211_mgd_assoc_data, the struct ieee80211_mgd_assoc_data will be
freed after assoc, so the ssid info of ieee80211_mgd_assoc_data can not
access after assoc, save ssid info to ieee80211_bss_conf, then ssid info
can be still access after assoc.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/1607312195-3583-2-git-send-email-wgong@codeaurora.org
[reset on disassoc]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
A channel change or a channel bandwidth change can impact the
rate control logic. However, the rate control logic was not updated
before/after such a change, which might result in unexpected
behavior.
Fix this by updating the stations rate control logic when the
corresponding channel context changes.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.600d967fe3c9.I48305f25cfcc9c032c77c51396e9e9b882748a86@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
I hit a bug in which we started a CSA with an action frame,
but the AP changed its mind and didn't change the beacon.
The CSA wasn't cancelled and we lost the connection.
The beacons were ignored because they never changed: they
never contained any CSA IE. Because they never changed, the
CRC of the beacon didn't change either which made us ignore
the beacons instead of processing them.
Now what happens is:
1) beacon has CRC X and it is valid. No CSA IE in the beacon
2) as long as beacon's CRC X, don't process their IEs
3) rx action frame with CSA
4) invalidate the beacon's CRC
5) rx beacon, CRC is still X, but now it is invalid
6) process the beacon, detect there is no CSA IE
7) abort CSA
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.83470b8407e6.I739b907598001362744692744be15335436b8351@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When calculating the minimal channel width for channel context,
the current operation Rx channel width of a station was used and not
the overall channel width capability of the station, i.e., both for
Tx and Rx.
Fix ieee80211_get_sta_bw() to use the maximal channel width the
station is capable. While at it make the function static.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.4387040b99a0.I74bcf19238f75a5960c4098b10e355123d933281@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Updates to the 802.11ax draft are coming that deprecate the
country element in favour of the transmit power envelope
element, and make the maximum transmit power level field in
the triplets reserved, so if we parse them we'd use 0 dBm
transmit power.
Follow suit and completely ignore the element on 6 GHz for
purposes of determining TX power.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.9abf9f6b4f88.Icb6e52af586edcc74f1f0360e8f6fc9ef2bfe8f5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we set up a TDLS station, we set sta->sta.bandwidth solely based
on the capabilities, because the "what's the current bandwidth" check
is bypassed and only applied for other types of stations.
This leads to the unfortunate scenario that the sta->sta.bandwidth is
160 MHz if both stations support it, but we never actually configure
this bandwidth unless the AP is already using 160 MHz; even for wider
bandwidth support we only go up to 80 MHz (at least right now.)
For iwlwifi, this can also lead to firmware asserts, telling us that
we've configured the TX rates for a higher bandwidth than is actually
available due to the PHY configuration.
For non-TDLS, we check against the interface's requested bandwidth,
but we explicitly skip this check for TDLS to cope with the wider BW
case. Change this to
(a) still limit to the TDLS peer's own chandef, which gets factored
into the overall PHY configuration we request from the driver,
and
(b) limit it to when the TDLS peer is authorized, because it's only
factored into the channel context in this case.
Fixes: 504871e602 ("mac80211: fix bandwidth computation for TDLS peers")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.fcc7d29c4590.I11f77e9e25ddf871a3c8d5604650c763e2c5887a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't really use this struct, we're now using
struct cfg80211_he_bss_color instead.
Change the one place in mac80211 that's using the old
name to use struct assignment instead of memcpy() and
thus remove the wrong sizeof while at it.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.f6698d97ae4e.Iba2dffcb79c4ab80bde7407609806010b55edfdf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the AP advertises a band switch during CSA, we will not have
the right information to continue working with it, since it will
likely (have to) change its capabilities and we don't track any
capability changes at all. Additionally, we store e.g. supported
rates per band, and that information would become invalid.
Since this is a fringe scenario, just disconnect explicitly.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.0e2327107c06.I461adb07704e056b054a4a7c29b80c95a9f56637@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Support the driver incrementing MIC error and replay detected
counters when having detected a bad frame, if it drops it directly
instead of relying on mac80211 to do the checks.
These are then exposed to userspace, though currently only in some
cases and in debugfs.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.fb59be9c6de8.Ife2260887366f585afadd78c983ebea93d2bb54b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commits
d3fd65484c ("net: core: add dev_sw_netstats_tx_add")
451b05f413 ("net: netdevice.h: sw_netstats_rx_add helper)
have added API to update net device per-cpu TX/RX stats.
Use core API instead of ieee80211_tx/rx_stats().
Signed-off-by: Lev Stipakov <lev@openvpn.net>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/20201113214623.144663-1-lev@openvpn.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
During restarrt, mac80211 is supposed to reconfigure the driver.
When there's a monitor interface, the interface is added and the
channel context for it was created, but not assigned to it as it
was not considered running during the restart.
Fix this by setting SDATA_STATE_RUNNING while adding monitor
interfaces.
Signed-off-by: Borwankar, Antara <antara.borwankar@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.e1df99693a4c.I494579f28018c2d0b9d4083a664cf872c28405ae@changeid
[reword commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_chandef_he_6ghz_oper() needs to return true if it
determined a value 6 GHz chandef, fix that.
Fixes: 1d00ce807e ("mac80211: support S1G association")
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/1606121152-3452-1-git-send-email-wgong@codeaurora.org
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
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Merge tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Some updates:
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
* tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (21 commits)
nl80211: fix kernel-doc warning in the new SAE attribute
cfg80211: remove WDS code
mac80211: remove WDS-related code
rt2x00: remove WDS code
b43legacy: remove WDS code
b43: remove WDS code
carl9170: remove WDS code
ath9k: remove WDS code
wireless: remove CONFIG_WIRELESS_WDS
mac80211: assure that certain drivers adhere to DONT_REORDER flag
mac80211: don't overwrite QoS TID of injected frames
mac80211: adhere to Tx control flag that prevents frame reordering
mac80211: add radiotap flag to assure frames are not reordered
mac80211: save HE oper info in BSS config for mesh
cfg80211: add support to configure HE MCS for beacon rate
nl80211: fix beacon tx rate mask validation
nl80211/cfg80211: fix potential infinite loop
cfg80211: Add support to calculate and report 4096-QAM HE rates
cfg80211: Add support to configure SAE PWE value to drivers
ieee80211: Add definition for WFA DPP
...
====================
Link: https://lore.kernel.org/r/20201113101148.25268-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some drivers fill the status rate list without setting the rate index after
the final rate to -1. minstrel_ht already deals with this, but minstrel
doesn't, which causes it to get stuck at the lowest rate on these drivers.
Fix this by checking the count as well.
Cc: stable@vger.kernel.org
Fixes: cccf129f82 ("mac80211: add the 'minstrel' rate control algorithm")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Deferring sampling attempts to the second stage has some bad interactions
with drivers that process the rate table in hardware and use the probe flag
to indicate probing packets (e.g. most mt76 drivers). On affected drivers
it can lead to probing not working at all.
If the link conditions turn worse, it might not be such a good idea to
do a lot of sampling for lower rates in this case.
Fix this by simply skipping the sample attempt instead of deferring it,
but keep the checks that would allow it to be sampled if it was skipped
too often, but only if it has less than 95% success probability.
Also ensure that IEEE80211_TX_CTL_RATE_CTRL_PROBE is set for all probing
packets.
Cc: stable@vger.kernel.org
Fixes: cccf129f82 ("mac80211: add the 'minstrel' rate control algorithm")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
After the status rework, ieee80211_tx_status_ext is leaking un-acknowledged
packets for stations in powersave mode.
To fix this, move the code handling those packets from __ieee80211_tx_status
into ieee80211_tx_status_ext
Reported-by: Tobias Waldvogel <tobias.waldvogel@gmail.com>
Fixes: 3318111cf6 ("mac80211: reduce duplication in tx status functions")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201111183359.43528-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some drivers use skb->priority to determine on which queue to send
a frame. An example is mt76x2u (this was tested on an AWUS036ACM).
This means these drivers currently do not adhere to the DONT_REORDER
flag. To fix this, we do not set skb->priority based on the QoS TID
of injected frames when the DONT_REORDER flag is set.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-5-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently ieee80211_set_qos_hdr sets the QoS TID of all frames based
on the value assigned to skb->priority. This means it will also
overwrite the QoS TID of injected frames. The commit 753ffad3d6
("mac80211: fix TID field in monitor mode transmit") prevented
injected frames from being modified because of this by setting
skb->priority to the TID of the injected frame, which assured the
QoS TID will not be changed to a different value. Unfortunately,
this workaround complicates the handling of injected frames because
we can't set skb->priority without affecting the TID value in the
QoS field of injected frames.
To avoid this, and to simplify the next patch, detect if a frame is
injected in ieee80211_set_qos_hdr and if so do not change its QoS
field.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-4-Mathy.Vanhoef@kuleuven.be
[fix typos in commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the Tx control flag is set to prevent frame reordering, send
all frames that have this flag set on the same queue. This assures
that frames that have this flag set are not reordered relative to
other frames that have this flag set.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-3-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new radiotap flag to indicate injected frames must not be
reordered relative to other frames that also have this flag set,
independent of priority field values in the transmitted frame.
Parse this radiotap flag and define and set a corresponding Tx
control flag. Note that this flag has recently been standardized
as part of an update to radiotap.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20201104061823.197407-2-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently he_support is set only for AP mode. Storing this
information for mesh BSS as well helps driver to determine
HE support. Also save HE operation element params in BSS
conf so that drivers can access this for any configurations
instead of having to parse the beacon to fetch that info.
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Link: https://lore.kernel.org/r/20201020183111.25458-2-pradeepc@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Replace commas with semicolons. Commas introduce unnecessary
variability in the code structure and are hard to see. What is done
is essentially described by the following Coccinelle semantic patch
(http://coccinelle.lip6.fr/):
// <smpl>
@@ expression e1,e2; @@
e1
-,
+;
e2
... when any
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1602412498-32025-3-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add KCOV remote annotations to ieee80211_iface_work() and
ieee80211_rx_list(). This will enable coverage-guided fuzzing of
mac80211 code that processes incoming 802.11 frames.
Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After the previous similar bugfix there was another bug here,
if no VHT elements were found we also disabled HE. Fix this to
disable HE only on the 5 GHz band; on 6 GHz it was already not
disabled, and on 2.4 GHz there need (should) not be any VHT.
Fixes: 57fa5e85d5 ("mac80211: determine chandef from HE 6 GHz operation")
Link: https://lore.kernel.org/r/20201013140156.535a2fc6192f.Id6e5e525a60ac18d245d86f4015f1b271fce6ee6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some identifiers have different names between their prototypes
and the kernel-doc markup.
Others need to be fixed, as kernel-doc markups should use this format:
identifier - description
In the specific case of __sta_info_flush(), add a documentation
for sta_info_flush(), as this one is the one used outside
sta_info.c.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Link: https://lore.kernel.org/r/978d35eef2dc76e21c81931804e4eaefbd6d635e.1603469755.git.mchehab+huawei@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
