ieee80211_iterate_active_interfaces() and
ieee80211_iterate_active_interfaces_atomic() already exist, where the
former allows the iterator function to sleep. Add
ieee80211_iterate_stations() which is similar to
ieee80211_iterate_stations_atomic() but allows the iterator to sleep.
This is needed for adding SDIO support to the rtw88 driver. Some
interators there are reading or writing registers. With the SDIO ops
(sdio_readb, sdio_writeb and friends) this means that the iterator
function may sleep.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211228211501.468981-2-martin.blumenstingl@googlemail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some AP can possibly try non-standard VHT rate and mac80211 warns and drops
packets, and leads low TCP throughput.
Rate marked as a VHT rate but data is invalid: MCS: 10, NSS: 2
WARNING: CPU: 1 PID: 7817 at net/mac80211/rx.c:4856 ieee80211_rx_list+0x223/0x2f0 [mac8021
Since commit c27aa56a72 ("cfg80211: add VHT rate entries for MCS-10 and MCS-11")
has added, mac80211 adds this support as well.
After this patch, throughput is good and iw can get the bitrate:
rx bitrate: 975.1 MBit/s VHT-MCS 10 80MHz short GI VHT-NSS 2
or
rx bitrate: 1083.3 MBit/s VHT-MCS 11 80MHz short GI VHT-NSS 2
Buglink: https://bugzilla.suse.com/show_bug.cgi?id=1192891
Reported-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20220103013623.17052-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Syzbot hit NULL deref in rhashtable_free_and_destroy(). The problem was
in mesh_paths and mpp_paths being NULL.
mesh_pathtbl_init() could fail in case of memory allocation failure, but
nobody cared, since ieee80211_mesh_init_sdata() returns void. It led to
leaving 2 pointers as NULL. Syzbot has found null deref on exit path,
but it could happen anywhere else, because code assumes these pointers are
valid.
Since all ieee80211_*_setup_sdata functions are void and do not fail,
let's embedd mesh_paths and mpp_paths into parent struct to avoid
adding error handling on higher levels and follow the pattern of others
setup_sdata functions
Fixes: 60854fd945 ("mac80211: mesh: convert path table to rhashtable")
Reported-and-tested-by: syzbot+860268315ba86ea6b96b@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20211230195547.23977-1-paskripkin@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clang static analysis reports this warnings
mlme.c:5332:7: warning: Branch condition evaluates to a
garbage value
have_higher_than_11mbit)
^~~~~~~~~~~~~~~~~~~~~~~
have_higher_than_11mbit is only set to true some of the time in
ieee80211_get_rates() but is checked all of the time. So
have_higher_than_11mbit needs to be initialized to false.
Fixes: 5d6a1b069b ("mac80211: set basic rates earlier")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20211223162848.3243702-1-trix@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* ndo_fill_forward_path support in mac80211, to let
drivers use it
* association comeback notification for userspace,
to be able to react more sensibly to long delays
* support for background radar detection hardware
in some chipsets
* SA Query Procedures offload on the AP side
* more logging if we find problems with HT/VHT/HE
* various cleanups and minor fixes
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Merge tag 'mac80211-next-for-net-next-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
This time we have:
* ndo_fill_forward_path support in mac80211, to let drivers use it
* association comeback notification for userspace, to be able
to react more sensibly to long delays
* support for background radar detection hardware in some chipsets
* SA Query Procedures offload on the AP side
* more logging if we find problems with HT/VHT/HE
* various cleanups and minor fixes
Conflicts:
net/wireless/reg.c:
e08ebd6d7b ("cfg80211: Acquire wiphy mutex on regulatory work")
701fdfe348 ("cfg80211: Enable regulatory enforcement checks for drivers supporting mesh iface")
https://lore.kernel.org/r/20211221111950.57ecc6a7@canb.auug.org.au
drivers/net/wireless/ath/ath10k/wmi.c:
7f599aeccb ("cfg80211: Use the HE operation IE to determine a 6GHz BSS channel")
3bf2537ec2 ("ath10k: drop beacon and probe response which leak from other channel")
https://lore.kernel.org/r/20211221115004.1cd6b262@canb.auug.org.au
* tag 'mac80211-next-for-net-next-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (32 commits)
cfg80211: Enable regulatory enforcement checks for drivers supporting mesh iface
rfkill: allow to get the software rfkill state
cfg80211: refactor cfg80211_get_ies_channel_number()
nl82011: clarify interface combinations wrt. channels
nl80211: Add support to offload SA Query procedures for AP SME device
nl80211: Add support to set AP settings flags with single attribute
mac80211: add more HT/VHT/HE state logging
cfg80211: Use the HE operation IE to determine a 6GHz BSS channel
cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard
mac80211: Notify cfg80211 about association comeback
cfg80211: Add support for notifying association comeback
mac80211: introduce channel switch disconnect function
cfg80211: Fix order of enum nl80211_band_iftype_attr documentation
cfg80211: simplify cfg80211_chandef_valid()
mac80211: Remove a couple of obsolete TODO
mac80211: fix FEC flag in radio tap header
mac80211: use coarse boottime for airtime fairness code
ieee80211: change HE nominal packet padding value defines
cfg80211: use ieee80211_bss_get_elem() instead of _get_ie()
mac80211: Use memset_after() to clear tx status
...
====================
Link: https://lore.kernel.org/r/20211221112532.28708-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ETSI standard defines "Offchannel CAC" as:
"Off-Channel CAC is performed by a number of non-continuous checks
spread over a period in time. This period, which is required to
determine the presence of radar signals, is defined as the Off-Channel
CAC Time..
Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time
4 hours..".
mac80211 implementation refers to a dedicated hw chain used for continuous
radar monitoring. Rename offchannel_* references to background_* in
order to avoid confusion with ETSI standard.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Introduce a disconnect function that can be used when a
channel switch error occurs. The channel switch can request to
block the tx, and so, we need to make sure we do not send a deauth
frame in this case.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cd2a615a0702.I9edb14785586344af17644b610ab5be109dcef00@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In mac80211, while building radiotap header
IEEE80211_RADIOTAP_MCS_HAVE_FEC flag is missing when LDPC enabled
from driver, hence LDPC is not updated properly in radiotap header.
Fix that by adding HAVE_FEC flag while building radiotap header.
Signed-off-by: P Praneesh <quic_ppranees@quicinc.com>
Link: https://lore.kernel.org/r/1638294648-844-2-git-send-email-quic_ppranees@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The time values used by the airtime fairness code only need to be accurate
enough to cover station activity detection.
Using ktime_get_coarse_boottime_ns instead of ktime_get_boottime_ns will
drop the accuracy down to jiffies intervals, but at the same time saves
a lot of CPU cycles in a hot path
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20211217114258.14619-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we reconfigure, the driver might do some things to complete
the reconfiguration. It's strange and could be broken in some
cases because we restart other works (e.g. remain-on-channel and
TX) before this happens, yet only start queues later.
Change this to do the reconfig complete when reconfiguration is
actually complete, not when we've already started doing other
things again.
For iwlwifi, this should fix a race where the reconfig can race
with TX, for ath10k and ath11k that also use this it won't make
a difference because they just start queues there, and mac80211
also stopped the queues and will restart them later as before.
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.20211129152938.cab99f22fe19.Iefe494687f15fd85f77c1b989d1149c8efdfdc36@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Mark TXQs as having seen transmit while they were stopped if
we bail out of drv_wake_tx_queue() due to reconfig, so that
the queue wake after this will make them catch up. This is
particularly necessary for when TXQs are used for management
packets since those TXQs won't see a lot of traffic that'd
make them catch up later.
Cc: stable@vger.kernel.org
Fixes: 4856bfd230 ("mac80211: do not call driver wake_tx_queue op during reconfig")
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.20211129152938.4573a221c0e1.I0d1d5daea3089be3fc0dccc92991b0f8c5677f0c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently channel context is updated only after station got an update about
new assoc state, this results in station using the old channel context.
Fix this by moving the update channel context before updating station,
enabling the driver to immediately use the updated channel context in
the new assoc state.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.1c80c17ffd8a.I94ae31378b363c1182cfdca46c4b7e7165cff984@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should be doing the HE capabilities lookup based on the full
interface type so if P2P doesn't have HE but client has it doesn't
get confused. Fix that.
Fixes: 2ab4587675 ("mac80211: add support for the ADDBA extension element")
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.20211129152938.010fc1d61137.If3a468145f29d670cb00a693bed559d8290ba693@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we call ieee80211_agg_start_txq(), that will in turn call
schedule_and_wake_txq(). Called from ieee80211_stop_tx_ba_cb()
this is done under sta->lock, which leads to certain circular
lock dependencies, as reported by Chris Murphy:
https://lore.kernel.org/r/CAJCQCtSXJ5qA4bqSPY=oLRMbv-irihVvP7A2uGutEbXQVkoNaw@mail.gmail.com
In general, ieee80211_agg_start_txq() is usually not called
with sta->lock held, only in this one place. But it's always
called with sta->ampdu_mlme.mtx held, and that's therefore
clearly sufficient.
Change ieee80211_stop_tx_ba_cb() to also call it without the
sta->lock held, by factoring it out of ieee80211_remove_tid_tx()
(which is only called in this one place).
This breaks the locking chain and makes it less likely that
we'll have similar locking chain problems in the future.
Fixes: ba8c3d6f16 ("mac80211: add an intermediate software queue implementation")
Reported-by: Chris Murphy <lists@colorremedies.com>
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.20211202152554.f519884c8784.I555fef8e67d93fff3d9a304886c4a9f8b322e591@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Sending them out on a different queue can cause a race condition where a
number of packets in the queue may be discarded by the receiver, because
the ADDBA request is sent too early.
This affects any driver with software A-MPDU setup which does not allocate
packet seqno in hardware on tx, regardless of whether iTXQ is used or not.
The only driver I've seen that explicitly deals with this issue internally
is mwl8k.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211202124533.80388-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It's easier to use and understand, and to extend for EHT later,
if we use the values here instead of the shifted values.
Unfortunately, we need to add _POS so that we can use it in
places like iwlwifi/mvm where constants are needed.
While at it, fix the typo ("NOMIMAL") which also helps catch any
conflicts.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://lore.kernel.org/r/20211126104817.7c29a05b8eb5.I2ca9faf06e177e3035bec91e2ae53c2f91d41774@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When color change is triggered in multiple bssid case, allow
only for transmitting BSS, and when it changes its bss color,
notify the non transmitting BSSs also of the new bss color.
Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Lavanya Suresh <lavaks@codeaurora.org>
Signed-off-by: Lavanya Suresh <lavaks@codeaurora.org>
Co-developed-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1637146647-16282-1-git-send-email-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows drivers to provide a destination device + info for flow offload
Only supported in combination with 802.3 encap offload
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/20211112112223.1209-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The assignment of these three local variables in the file will not
be used in the corresponding functions, so they should be deleted.
The clang_analyzer complains as follows:
net/mac80211/wpa.c:689:2 warning:
net/mac80211/wpa.c:883:2 warning:
net/mac80211/wpa.c:452:2 warning:
Value stored to 'hdr' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211104061411.1744-1-luo.penghao@zte.com.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The following is from a system that went OOM due to a memory leak:
wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_add_sta)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
wlan0: Inserted STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_work)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
.
.
wlan0: expiring inactive not authorized STA 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 1
wlan0: Removed STA 74:83:c2:64:0b:87
wlan0: Destroyed STA 74:83:c2:64:0b:87
The ieee80211_ibss_finish_sta() is called twice on the same STA from 2
different locations. On the second attempt, the allocated STA is not
destroyed creating a kernel memory leak.
This is happening because sta_info_insert_finish() does not call
sta_info_free() the second time when the STA already exists (returns
-EEXIST). Note that the caller sta_info_insert_rcu() assumes STA is
destroyed upon errors.
Same fix is applied to -ENOMEM.
Signed-off-by: Ahmed Zaki <anzaki@gmail.com>
Link: https://lore.kernel.org/r/20211002145329.3125293-1-anzaki@gmail.com
[change the error path label to use the existing code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some drivers that do their own sequence number allocation (e.g. ath9k) rely
on being able to modify params->ssn on starting tx ampdu sessions.
This was broken by a change that modified it to use sta->tid_seq[tid] instead.
Cc: stable@vger.kernel.org
Fixes: 31d8bb4e07 ("mac80211: agg-tx: refactor sending addba")
Reported-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211124094024.43222-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since retransmission clears info->control, rate control needs to be called
again, otherwise the driver might crash due to invalid rates.
Cc: stable@vger.kernel.org # 5.14+
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Robert W <rwbugreport@lost-in-the-void.net>
Fixes: 03c3911d2d ("mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://lore.kernel.org/r/20211122204323.9787-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add two new parameters kernel_ringparam and extack for
.get_ringparam and .set_ringparam to extend more ring params
through netlink.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similar to cfg80211, introduce set_radar_offchan callback in mac80211_ops
in order to configure a dedicated offchannel chain available on some hw
(e.g. mt7915) to perform offchannel CAC detection and avoid tx/rx downtime.
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/201110606d4f3a7dfdf31440e351f2e2c375d4f0.1634979655.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The codepaths for rx with decap offload and tx with itxq were not updating
the counters for the throughput led trigger.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211113063415.55147-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since commit a05829a722 ("cfg80211: avoid holding the RTNL when
calling the driver") we've not only been protecting the pointer
to monitor_sdata with the RTNL, but also with the wiphy->mtx. This
is relevant in a number of lockdep assertions, e.g. the one we hit
in ieee80211_set_monitor_channel(). However, we're now protecting
all the assignments/dereferences, even the one in interface iter,
with the wiphy->mtx, so switch over the lockdep assertions to that
lock.
Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20211112135143.cb8e8ceffef3.Iaa210f16f6904c8a7a24954fb3396da0ef86ec08@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When __ieee80211_select_queue is called, skb->cb has not been cleared yet,
which means that info->control.flags can contain garbage.
In some cases this leads to IEEE80211_TX_CTRL_DONT_REORDER being set, causing
packets marked for other queues to randomly end up in BE instead.
This flag only needs to be checked in ieee80211_select_queue_80211, since
the radiotap parser is the only piece of code that sets it
Fixes: 66d06c8473 ("mac80211: adhere to Tx control flag that prevents frame reordering")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211110212201.35452-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In commit 8c89f7b3d3 ("mac80211: Use flex-array for radiotap header
bitmap") we accidentally pointed the position to the wrong place, so
we overwrite a present bitmap, and thus cause all kinds of trouble.
To see the issue, note that the previous code read:
pos = (void *)(it_present + 1);
The requirement now is that we need to calculate pos via it_optional,
to not trigger the compiler hardening checks, as:
pos = (void *)&rthdr->it_optional[...];
Rewriting the original expression, we get (obviously, since that just
adds "+ x - x" terms):
pos = (void *)(it_present + 1 + rthdr->it_optional - rthdr->it_optional)
and moving the "+ rthdr->it_optional" outside to be used as an array:
pos = (void *)&rthdr->it_optional[it_present + 1 - rthdr->it_optional];
The original is off by one, fix it.
Cc: stable@vger.kernel.org
Fixes: 8c89f7b3d3 ("mac80211: Use flex-array for radiotap header bitmap")
Reported-by: Sid Hayn <sidhayn@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Sid Hayn <sidhayn@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211109100203.c61007433ed6.I1dade57aba7de9c4f48d68249adbae62636fd98c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_get_keyid() will return false value if IV has been stripped,
such as return 0 for IP/ARP frames due to LLC header, and return -EINVAL
for disassociation frames due to its length... etc. Don't try to access
it if it's not present.
Signed-off-by: Xing Song <xing.song@mediatek.com>
Link: https://lore.kernel.org/r/20211101024657.143026-1-xing.song@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
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Merge tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Quite a few changes:
* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
* tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
cfg80211: fix kernel-doc for MBSSID EMA
mac80211: Prevent AP probing during suspend
nl80211: Add LC placeholder band definition to nl80211_band
...
====================
Link: https://lore.kernel.org/r/20211021154953.134849-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Submitting AP probe/null during suspend can cause unexpected
disconnect on resume because of timeout waiting for ack status:
wlan0: Failed to send nullfunc to AP 11:22:33:44:55:66 after 500ms, disconnecting
This is especially the case when we enter suspend when a scan is
ongoing, indeed, scan is cancelled from __ieee80211_suspend, leading
to a corresponding (aborted) scan complete event, which in turn causes
the submission of an immediate monitor null frame (restart_sta_timer).
The corresponding packet or ack will not be processed before resuming,
causing a timeout & disconnect on resume.
Delay the AP probing when suspending/suspended.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1634805927-1113-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Define LC band which is a draft under IEEE 802.11bb.
Current NL80211_BAND_LC is a placeholder band and
will be more defined IEEE 802.11bb progresses.
Signed-off-by: Srinivasan Raju <srini.raju@purelifi.com>
Link: https://lore.kernel.org/r/20211018100143.7565-2-srini.raju@purelifi.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Split __ieee80211_beacon_get() into a separate function for AP mode
ieee80211_beacon_get_ap().
Also, move the code common to all modes (AP, adhoc and mesh) to
a separate function ieee80211_beacon_get_finish().
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Link: https://lore.kernel.org/r/20211006040938.9531-2-alokad@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jakub Kicinski