linux-stable.git/net/wireless, branch v5.17.7 Linux kernel stable tree nl80211: correctly check NL80211_ATTR_REG_ALPHA2 size 2022-04-20T07:36:26+00:00 Johannes Berg johannes.berg@intel.com 2022-04-11T09:42:03+00:00 8ca676f342fe1167be06b27871413676e5680fcd commit 6624bb34b4eb19f715db9908cca00122748765d7 upstream. We need this to be at least two bytes, so we can access alpha2[0] and alpha2[1]. It may be three in case some userspace used NUL-termination since it was NLA_STRING (and we also push it out with NUL-termination). Cc: stable@vger.kernel.org Reported-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220411114201.fd4a31f06541.Ie7ff4be2cf348d8cc28ed0d626fc54becf7ea799@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6624bb34b4eb19f715db9908cca00122748765d7 upstream.

We need this to be at least two bytes, so we can access
alpha2[0] and alpha2[1]. It may be three in case some
userspace used NUL-termination since it was NLA_STRING
(and we also push it out with NUL-termination).

Cc: stable@vger.kernel.org
Reported-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220411114201.fd4a31f06541.Ie7ff4be2cf348d8cc28ed0d626fc54becf7ea799@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cfg80211: hold bss_lock while updating nontrans_list 2022-04-20T07:36:14+00:00 Rameshkumar Sundaram quic_ramess@quicinc.com 2022-04-11T09:07:51+00:00 e33bc93861e6bc4ca0db7915fd4295fb430c76fb [ Upstream commit a5199b5626cd6913cf8776a835bc63d40e0686ad ] Synchronize additions to nontrans_list of transmitting BSS with bss_lock to avoid races. Also when cfg80211_add_nontrans_list() fails __cfg80211_unlink_bss() needs bss_lock to be held (has lockdep assert on bss_lock). So protect the whole block with bss_lock to avoid races and warnings. Found during code review. Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning") Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com> Link: https://lore.kernel.org/r/1649668071-9370-1-git-send-email-quic_ramess@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit a5199b5626cd6913cf8776a835bc63d40e0686ad ]

Synchronize additions to nontrans_list of transmitting BSS with
bss_lock to avoid races. Also when cfg80211_add_nontrans_list() fails
__cfg80211_unlink_bss() needs bss_lock to be held (has lockdep assert
on bss_lock). So protect the whole block with bss_lock to avoid
races and warnings. Found during code review.

Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649668071-9370-1-git-send-email-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
cfg80211: don't add non transmitted BSS to 6GHz scanned channels 2022-04-13T17:27:11+00:00 Avraham Stern avraham.stern@intel.com 2022-02-02T08:49:37+00:00 c488668dfbde9e909067afc0ddb6f7b48c9b3a01 [ Upstream commit 5666ee154f4696c011dfa8544aaf5591b6b87515 ] When adding 6GHz channels to scan request based on reported co-located APs, don't add channels that have only APs with "non-transmitted" BSSes if they only match the wildcard SSID since they will be found by probing the "transmitted" BSS. Signed-off-by: Avraham Stern <avraham.stern@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20220202104617.f6ddf099f934.I231e55885d3644f292d00dfe0f42653269f2559e@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 5666ee154f4696c011dfa8544aaf5591b6b87515 ]

When adding 6GHz channels to scan request based on reported
co-located APs, don't add channels that have only APs with
"non-transmitted" BSSes if they only match the wildcard SSID since
they will be found by probing the "transmitted" BSS.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.f6ddf099f934.I231e55885d3644f292d00dfe0f42653269f2559e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
nl80211: Update bss channel on channel switch for P2P_CLIENT 2022-03-02T21:37:05+00:00 Sreeramya Soratkal quic_ssramya@quicinc.com 2022-03-01T06:03:20+00:00 e50b88c4f076242358b66ddb67482b96947438f2 The wdev channel information is updated post channel switch only for the station mode and not for the other modes. Due to this, the P2P client still points to the old value though it moved to the new channel when the channel change is induced from the P2P GO. Update the bss channel after CSA channel switch completion for P2P client interface as well. Signed-off-by: Sreeramya Soratkal <quic_ssramya@quicinc.com> Link: https://lore.kernel.org/r/1646114600-31479-1-git-send-email-quic_ssramya@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
The wdev channel information is updated post channel switch only for
the station mode and not for the other modes. Due to this, the P2P client
still points to the old value though it moved to the new channel
when the channel change is induced from the P2P GO.

Update the bss channel after CSA channel switch completion for P2P client
interface as well.

Signed-off-by: Sreeramya Soratkal <quic_ssramya@quicinc.com>
Link: https://lore.kernel.org/r/1646114600-31479-1-git-send-email-quic_ssramya@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: fix CONFIG_CFG80211_EXTRA_REGDB_KEYDIR typo 2022-03-01T13:10:14+00:00 Johannes Berg johannes.berg@intel.com 2022-02-21T14:55:12+00:00 a12f76345e026f1b300a0d17c56f020b6949b093 The kbuild change here accidentally removed not only the unquoting, but also the last character of the variable name. Fix that. Fixes: 129ab0d2d9f3 ("kbuild: do not quote string values in include/config/auto.conf") Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20220221155512.1d25895f7c5f.I50fa3d4189fcab90a2896fe8cae215035dae9508@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
The kbuild change here accidentally removed not only the
unquoting, but also the last character of the variable
name. Fix that.

Fixes: 129ab0d2d9f3 ("kbuild: do not quote string values in include/config/auto.conf")
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20220221155512.1d25895f7c5f.I50fa3d4189fcab90a2896fe8cae215035dae9508@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
nl80211: Handle nla_memdup failures in handle_nan_filter 2022-03-01T10:15:08+00:00 Jiasheng Jiang jiasheng@iscas.ac.cn 2022-03-01T10:00:20+00:00 6ad27f522cb3b210476daf63ce6ddb6568c0508b As there's potential for failure of the nla_memdup(), check the return value. Fixes: a442b761b24b ("cfg80211: add add_nan_func / del_nan_func") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Link: https://lore.kernel.org/r/20220301100020.3801187-1-jiasheng@iscas.ac.cn Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
As there's potential for failure of the nla_memdup(),
check the return value.

Fixes: a442b761b24b ("cfg80211: add add_nan_func / del_nan_func")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220301100020.3801187-1-jiasheng@iscas.ac.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: fix race in netlink owner interface destruction 2022-02-04T15:31:44+00:00 Johannes Berg johannes.berg@intel.com 2022-02-01T13:09:51+00:00 f0a6fd1527067da537e9c48390237488719948ed My previous fix here to fix the deadlock left a race where the exact same deadlock (see the original commit referenced below) can still happen if cfg80211_destroy_ifaces() already runs while nl80211_netlink_notify() is still marking some interfaces as nl_owner_dead. The race happens because we have two loops here - first we dev_close() all the netdevs, and then we destroy them. If we also have two netdevs (first one need only be a wdev though) then we can find one during the first iteration, close it, and go to the second iteration -- but then find two, and try to destroy also the one we didn't close yet. Fix this by only iterating once. Reported-by: Toke Høiland-Jørgensen <toke@redhat.com> Fixes: ea6b2098dd02 ("cfg80211: fix locking in netlink owner interface destruction") Tested-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20220201130951.22093-1-johannes@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
My previous fix here to fix the deadlock left a race where
the exact same deadlock (see the original commit referenced
below) can still happen if cfg80211_destroy_ifaces() already
runs while nl80211_netlink_notify() is still marking some
interfaces as nl_owner_dead.

The race happens because we have two loops here - first we
dev_close() all the netdevs, and then we destroy them. If we
also have two netdevs (first one need only be a wdev though)
then we can find one during the first iteration, close it,
and go to the second iteration -- but then find two, and try
to destroy also the one we didn't close yet.

Fix this by only iterating once.

Reported-by: Toke Høiland-Jørgensen <toke@redhat.com>
Fixes: ea6b2098dd02 ("cfg80211: fix locking in netlink owner interface destruction")
Tested-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20220201130951.22093-1-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild 2022-01-19T09:15:19+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-01-19T09:15:19+00:00 fd6f57bfda7c36f2d465cee39d5d8c623db5d7aa Pull Kbuild updates from Masahiro Yamada: - Add new kconfig target 'make mod2noconfig', which will be useful to speed up the build and test iteration. - Raise the minimum supported version of LLVM to 11.0.0 - Refactor certs/Makefile - Change the format of include/config/auto.conf to stop double-quoting string type CONFIG options. - Fix ARCH=sh builds in dash - Separate compression macros for general purposes (cmd_bzip2 etc.) and the ones for decompressors (cmd_bzip2_with_size etc.) - Misc Makefile cleanups * tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kbuild: add cmd_file_size arch: decompressor: remove useless vmlinux.bin.all-y kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22} kbuild: drop $(size_append) from cmd_zstd sh: rename suffix-y to suffix_y doc: kbuild: fix default in `imply` table microblaze: use built-in function to get CPU_{MAJOR,MINOR,REV} certs: move scripts/extract-cert to certs/ kbuild: do not quote string values in include/config/auto.conf kbuild: do not include include/config/auto.conf from shell scripts certs: simplify $(srctree)/ handling and remove config_filename macro kbuild: stop using config_filename in scripts/Makefile.modsign certs: remove misleading comments about GCC PR certs: refactor file cleaning certs: remove unneeded -I$(srctree) option for system_certificates.o certs: unify duplicated cmd_extract_certs and improve the log certs: use $< and $@ to simplify the key generation rule kbuild: remove headers_check stub kbuild: move headers_check.pl to usr/include/ certs: use if_changed to re-generate the key when the key type is changed ... 
Pull Kbuild updates from Masahiro Yamada:

 - Add new kconfig target 'make mod2noconfig', which will be useful to
   speed up the build and test iteration.

 - Raise the minimum supported version of LLVM to 11.0.0

 - Refactor certs/Makefile

 - Change the format of include/config/auto.conf to stop double-quoting
   string type CONFIG options.

 - Fix ARCH=sh builds in dash

 - Separate compression macros for general purposes (cmd_bzip2 etc.) and
   the ones for decompressors (cmd_bzip2_with_size etc.)

 - Misc Makefile cleanups

* tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
  kbuild: add cmd_file_size
  arch: decompressor: remove useless vmlinux.bin.all-y
  kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}
  kbuild: drop $(size_append) from cmd_zstd
  sh: rename suffix-y to suffix_y
  doc: kbuild: fix default in `imply` table
  microblaze: use built-in function to get CPU_{MAJOR,MINOR,REV}
  certs: move scripts/extract-cert to certs/
  kbuild: do not quote string values in include/config/auto.conf
  kbuild: do not include include/config/auto.conf from shell scripts
  certs: simplify $(srctree)/ handling and remove config_filename macro
  kbuild: stop using config_filename in scripts/Makefile.modsign
  certs: remove misleading comments about GCC PR
  certs: refactor file cleaning
  certs: remove unneeded -I$(srctree) option for system_certificates.o
  certs: unify duplicated cmd_extract_certs and improve the log
  certs: use $< and $@ to simplify the key generation rule
  kbuild: remove headers_check stub
  kbuild: move headers_check.pl to usr/include/
  certs: use if_changed to re-generate the key when the key type is changed
  ...
kbuild: do not quote string values in include/config/auto.conf 2022-01-08T09:03:57+00:00 Masahiro Yamada masahiroy@kernel.org 2021-12-14T02:53:53+00:00 129ab0d2d9f38b9d43df35235fc66c6740d6928b The previous commit fixed up all shell scripts to not include include/config/auto.conf. Now that include/config/auto.conf is only included by Makefiles, we can change it into a more Make-friendly form. Previously, Kconfig output string values enclosed with double-quotes (both in the .config and include/config/auto.conf): CONFIG_X="foo bar" Unlike shell, Make handles double-quotes (and single-quotes as well) verbatim. We must rip them off when used. There are some patterns: [1] $(patsubst "%",%,$(CONFIG_X)) [2] $(CONFIG_X:"%"=%) [3] $(subst ",,$(CONFIG_X)) [4] $(shell echo $(CONFIG_X)) These are not only ugly, but also fragile. [1] and [2] do not work if the value contains spaces, like CONFIG_X=" foo bar " [3] does not work correctly if the value contains double-quotes like CONFIG_X="foo\"bar" [4] seems to work better, but has a cost of forking a process. Anyway, quoted strings were always PITA for our Makefiles. This commit changes Kconfig to stop quoting in include/config/auto.conf. These are the string type symbols referenced in Makefiles or scripts: ACPI_CUSTOM_DSDT_FILE ARC_BUILTIN_DTB_NAME ARC_TUNE_MCPU BUILTIN_DTB_SOURCE CC_IMPLICIT_FALLTHROUGH CC_VERSION_TEXT CFG80211_EXTRA_REGDB_KEYDIR EXTRA_FIRMWARE EXTRA_FIRMWARE_DIR EXTRA_TARGETS H8300_BUILTIN_DTB INITRAMFS_SOURCE LOCALVERSION MODULE_SIG_HASH MODULE_SIG_KEY NDS32_BUILTIN_DTB NIOS2_DTB_SOURCE OPENRISC_BUILTIN_DTB SOC_CANAAN_K210_DTB_SOURCE SYSTEM_BLACKLIST_HASH_LIST SYSTEM_REVOCATION_KEYS SYSTEM_TRUSTED_KEYS TARGET_CPU UNUSED_KSYMS_WHITELIST XILINX_MICROBLAZE0_FAMILY XILINX_MICROBLAZE0_HW_VER XTENSA_VARIANT_NAME I checked them one by one, and fixed up the code where necessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 
The previous commit fixed up all shell scripts to not include
include/config/auto.conf.

Now that include/config/auto.conf is only included by Makefiles,
we can change it into a more Make-friendly form.

Previously, Kconfig output string values enclosed with double-quotes
(both in the .config and include/config/auto.conf):

    CONFIG_X="foo bar"

Unlike shell, Make handles double-quotes (and single-quotes as well)
verbatim. We must rip them off when used.

There are some patterns:

  [1] $(patsubst "%",%,$(CONFIG_X))
  [2] $(CONFIG_X:"%"=%)
  [3] $(subst ",,$(CONFIG_X))
  [4] $(shell echo $(CONFIG_X))

These are not only ugly, but also fragile.

[1] and [2] do not work if the value contains spaces, like
   CONFIG_X=" foo bar "

[3] does not work correctly if the value contains double-quotes like
   CONFIG_X="foo\"bar"

[4] seems to work better, but has a cost of forking a process.

Anyway, quoted strings were always PITA for our Makefiles.

This commit changes Kconfig to stop quoting in include/config/auto.conf.

These are the string type symbols referenced in Makefiles or scripts:

    ACPI_CUSTOM_DSDT_FILE
    ARC_BUILTIN_DTB_NAME
    ARC_TUNE_MCPU
    BUILTIN_DTB_SOURCE
    CC_IMPLICIT_FALLTHROUGH
    CC_VERSION_TEXT
    CFG80211_EXTRA_REGDB_KEYDIR
    EXTRA_FIRMWARE
    EXTRA_FIRMWARE_DIR
    EXTRA_TARGETS
    H8300_BUILTIN_DTB
    INITRAMFS_SOURCE
    LOCALVERSION
    MODULE_SIG_HASH
    MODULE_SIG_KEY
    NDS32_BUILTIN_DTB
    NIOS2_DTB_SOURCE
    OPENRISC_BUILTIN_DTB
    SOC_CANAAN_K210_DTB_SOURCE
    SYSTEM_BLACKLIST_HASH_LIST
    SYSTEM_REVOCATION_KEYS
    SYSTEM_TRUSTED_KEYS
    TARGET_CPU
    UNUSED_KSYMS_WHITELIST
    XILINX_MICROBLAZE0_FAMILY
    XILINX_MICROBLAZE0_HW_VER
    XTENSA_VARIANT_NAME

I checked them one by one, and fixed up the code where necessary.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Merge tag 'mac80211-next-for-net-next-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2021-12-21T15:41:52+00:00 Jakub Kicinski kuba@kernel.org 2021-12-21T15:41:47+00:00 294e70c952b494918f139670cf5a89839a2e03e6 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: e08ebd6d7b90 ("cfg80211: Acquire wiphy mutex on regulatory work") 701fdfe348f7 ("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: 7f599aeccbd2 ("cfg80211: Use the HE operation IE to determine a 6GHz BSS channel") 3bf2537ec2e3 ("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> 
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:
  e08ebd6d7b90 ("cfg80211: Acquire wiphy mutex on regulatory work")
  701fdfe348f7 ("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:
  7f599aeccbd2 ("cfg80211: Use the HE operation IE to determine a 6GHz BSS channel")
  3bf2537ec2e3 ("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>