Commit Graph

2680 Commits

Author SHA1 Message Date
Veerendranath Jakkam
efbabc1165 cfg80211: Indicate MLO connection info in connect and roam callbacks
The MLO links used for connection with an MLD AP are decided by the
driver in case of SME offloaded to driver.

Add support for the drivers to indicate the information of links used
for MLO connection in connect and roam callbacks, update the connected
links information in wdev from connect/roam result sent by driver.
Also, send the connected links information to userspace.

Add a netlink flag attribute to indicate that userspace supports
handling of MLO connection. Drivers must not do MLO connection when this
flag is not set. This is to maintain backwards compatibility with older
supplicant versions which doesn't have support for MLO connection.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:57:09 +02:00
Johannes Berg
dd374f84ba wifi: nl80211: expose link ID for associated BSSes
When retrieving scan data, expose not just whether or not the
interface (possibly an MLD) is associated to the BSS or not,
but also on which link ID if it is an MLD.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:57:08 +02:00
Johannes Berg
ce08cd344a wifi: nl80211: expose link information for interfaces
When getting/dumping an interface, expose information about
valid links.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:57:08 +02:00
Johannes Berg
f2a0290b2d wifi: cfg80211: add optional link add/remove callbacks
Add some optional callbacks for link add/remove so that
drivers can react here. Initially, I thought it would be
sufficient to just create the link in start_ap etc., but
it turns out that's not so simple, since there are quite
a few callbacks that can be called: if they're erroneously
without start_ap, things might crash.

Thus it might be easier for drivers to allocate all the
necessary data structures immediately, to not have to
worry about it in each callback, since cfg80211 checks
that the link ID is valid (has been added.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:56:11 +02:00
Johannes Berg
c8a11ed553 wifi: cfg80211: sort trace.h
We wanted to have this sorted by direction (to/from driver),
but didn't maintain that well. Sort the file now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:56:08 +02:00
Johannes Berg
d648c23024 wifi: nl80211: support MLO in auth/assoc
For authentication, we need the BSS, the link_id and the AP
MLD address to create the link and station, (for now) the
driver assigns a link address and sends the frame, the MLD
address needs to be the address of the interface.

For association, pass the list of BSSes that were selected
for the MLO connection, along with extra per-STA profile
elements, the AP MLD address and the link ID on which the
association request should be sent.

Note that for now we don't have a proper way to pass the link
address(es) and so the driver/mac80211 will select one, but
depending on how that selection works it means that assoc w/o
auth data still being around (mac80211 implementation detail)
the association won't necessarily work - so this will need to
be extended in the future to sort out the link addressing.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:57 +02:00
Johannes Berg
325839da95 wifi: cfg80211: simplify cfg80211_mlme_auth() prototype
This function has far too many parameters now, move out
the BSS lookup and pass the request struct instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:48 +02:00
Johannes Berg
9ecff10e82 wifi: nl80211: refactor BSS lookup in nl80211_associate()
For MLO we'll need to do this multiple times, so refactor
this. For now keep the disconnect_bssid, but we'll need to
figure out how to handle that with MLD.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:45 +02:00
Johannes Berg
0f7594489a wifi: cfg80211: mlme: get BSS entry outside cfg80211_mlme_assoc()
Today it makes more sense to pass the necessary parameters to
look up the BSS entry to cfg80211_mlme_assoc(), but with MLO
we will need to look up multiple, and that gets awkward. Pull
the lookup code into the callers so we can change it better.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:43 +02:00
Johannes Berg
7b0a0e3c3a wifi: cfg80211: do some rework towards MLO link APIs
In order to support multi-link operation with multiple links,
start adding some APIs. The notable addition here is to have
the link ID in a new nl80211 attribute, that will be used to
differentiate the links in many nl80211 operations.

So far, this patch adds the netlink NL80211_ATTR_MLO_LINK_ID
attribute (as well as the NL80211_ATTR_MLO_LINKS attribute)
and plugs it through the system in some places, checking the
validity etc. along with other infrastructure needed for it.

For now, I've decided to include only the over-the-air link
ID in the API. I know we discussed that we eventually need to
have to have other ways of identifying a link, but for local
AP mode and auth/assoc commands as well as set_key etc. we'll
use the OTA ID.

Also included in this patch is some refactoring of the data
structures in struct wireless_dev, splitting for the first
time the data into type dependent pieces, to make reasoning
about these things easier.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:54:58 +02:00
Jakub Kicinski
d353e1a3ba wireless-next patches for v5.19
Second set of patches for v5.19 and most likely the last one. rtw89
 got support for 8852ce devices and mt76 now supports Wireless Ethernet
 Dispatch.
 
 Major changes:
 
 cfg80211/mac80211
 
 * support disabling EHT mode
 
 rtw89
 
 * add support for Realtek 8852ce devices
 
 mt76
 
 * Wireless Ethernet Dispatch support for flow offload
 
 * non-standard VHT MCS10-11 support
 
 * mt7921 AP mode support
 
 * mt7921 ipv6 NS offload support
 
 ath11k
 
 * enable keepalive during WoWLAN suspend
 
 * implement remain-on-channel support
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Merge tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v5.19

Second set of patches for v5.19 and most likely the last one. rtw89
got support for 8852ce devices and mt76 now supports Wireless Ethernet
Dispatch.

Major changes:

cfg80211/mac80211
 - support disabling EHT mode

rtw89
 - add support for Realtek 8852ce devices

mt76
 - Wireless Ethernet Dispatch support for flow offload
 - non-standard VHT MCS10-11 support
 - mt7921 AP mode support
 - mt7921 ipv6 NS offload support

ath11k
 - enable keepalive during WoWLAN suspend
 - implement remain-on-channel support

* tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (135 commits)
  iwlwifi: mei: fix potential NULL-ptr deref
  iwlwifi: mei: clear the sap data header before sending
  iwlwifi: mvm: remove vif_count
  iwlwifi: mvm: always tell the firmware to accept MCAST frames in BSS
  iwlwifi: mvm: add OTP info in case of init failure
  iwlwifi: mvm: fix assert 1F04 upon reconfig
  iwlwifi: fw: init SAR GEO table only if data is present
  iwlwifi: mvm: clean up authorized condition
  iwlwifi: mvm: use NULL instead of ERR_PTR when parsing wowlan status
  iwlwifi: pcie: simplify MSI-X cause mapping
  rtw89: pci: only mask out INT indicator register for disable interrupt v1
  rtw89: convert rtw89_band to nl80211_band precisely
  rtw89: 8852c: update txpwr tables to HALRF_027_00_052
  rtw89: cfo: check mac_id to avoid out-of-bounds
  rtw89: 8852c: set TX antenna path
  rtw89: add ieee80211::sta_rc_update ops
  wireless: Fix Makefile to be in alphabetical order
  mac80211: refactor freeing the next_beacon
  cfg80211: fix kernel-doc for cfg80211_beacon_data
  mac80211: minstrel_ht: support ieee80211_rate_status
  ...
====================

Link: https://lore.kernel.org/r/20220519153334.8D051C385AA@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-19 13:01:08 -07:00
Rameshkumar Sundaram
3d48cb7481 nl80211: Parse NL80211_ATTR_HE_BSS_COLOR as a part of nl80211_parse_beacon
NL80211_ATTR_HE_BSS_COLOR attribute can be included in both
NL80211_CMD_START_AP and NL80211_CMD_SET_BEACON commands.

Move he_bss_color from cfg80211_ap_settings to cfg80211_beacon_data
and parse NL80211_ATTR_HE_BSS_COLOR as a part of nl80211_parse_beacon()
to have bss color settings parsed for both start ap and set beacon
commands.
Add a new flag he_bss_color_valid to indicate whether
NL80211_ATTR_HE_BSS_COLOR attribute is included.

Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649867295-7204-2-git-send-email-quic_ramess@quicinc.com
[fix build ...]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-16 09:45:21 +02:00
Jakub Kicinski
9b19e57a3c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Build issue in drivers/net/ethernet/sfc/ptp.c
  54fccfdd7c ("sfc: efx_default_channel_type APIs can be static")
  49e6123c65 ("net: sfc: fix memory leak due to ptp channel")
https://lore.kernel.org/all/20220510130556.52598fe2@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-12 16:15:30 -07:00
Johannes Berg
f971e1887f nl80211: fix locking in nl80211_set_tx_bitrate_mask()
This accesses the wdev's chandef etc., so cannot safely
be used without holding the lock.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220506102136.06b7205419e6.I2a87c05fbd8bc5e565e84d190d4cfd2e92695a90@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-09 14:00:07 +02:00
Muna Sinada
36f8423597 cfg80211: support disabling EHT mode
Allow userspace to disable EHT mode during association.

Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20220323224636.20211-1-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 22:50:01 +02:00
Dimitri John Ledkov
7bc7981eee cfg80211: declare MODULE_FIRMWARE for regulatory.db
Add MODULE_FIRMWARE declarations for regulatory.db and
regulatory.db.p7s such that userspace tooling can discover and include
these files.

Cc: stable@vger.kernel.org
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Link: https://lore.kernel.org/r/20220414125004.267819-1-dimitri.ledkov@canonical.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 12:32:39 +02:00
Johannes Berg
2182db91e0 nl80211: rework internal_flags usage
Since internal_flags is only 8 bits, we can only have one
more internal flag. However, we can obviously never use all
of possible the combinations, in fact, we only use 14 of
them (including no flags).

Since we want more flags for MLO (multi-link operation) in
the future, refactor the code to use a flags selector, so
wrap all of the .internal_flags assignments in a IFLAGS()
macro which selects the combination according to the pre-
defined list of combinations.

When we need a new combination, we'll have to add it, but
again we will never use all possible combinations.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220414140402.70ddf8af3eb0.I2cc38cb6a10bb4c3863ec9ee97edbcc70a07aa4b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 12:31:57 +02:00
Johannes Berg
1b550a0beb nl80211: don't hold RTNL in color change request
It's not necessary to hold the RTNL across color change
requests, since all the inner locking needs only the
wiphy mutex which we already hold as well.

Fixes: 0d2ab3aea5 ("nl80211: add support for BSS coloring")
Link: https://lore.kernel.org/r/20220414140402.32e03e8c261b.I5e7dc6bc563a129b938c43298da6bb4e812400a5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 12:30:27 +02:00
Johannes Berg
34c9a0e71c cfg80211: remove cfg80211_get_chan_state()
We haven't used this function for years, since commit c781944b71
("cfg80211: Remove unused cfg80211_can_use_iftype_chan()") which
itself removed a function unused since commit 97dc94f1d9
("cfg80211: remove channel_switch combination check"), almost eight
years ago.

Also remove the now unused enum cfg80211_chan_mode and some struct
members that were only used for this function.

Link: https://lore.kernel.org/r/20220412220958.1a191dca19d7.Ide4448f02d0e2f1ca2992971421ffc1933a5370a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 12:30:24 +02:00
Kieran Frewen
e847ffe2d1 cfg80211: retrieve S1G operating channel number
When retrieving the S1G channel number from IEs, we should retrieve
the operating channel instead of the primary channel. The S1G operation
element specifies the main channel of operation as the oper channel,
unlike for HT and HE which specify their main channel of operation as
the primary channel.

Signed-off-by: Kieran Frewen <kieran.frewen@morsemicro.com>
Signed-off-by: Bassem Dawood <bassem@morsemicro.com>
Link: https://lore.kernel.org/r/20220420041321.3788789-1-kieran.frewen@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 11:33:52 +02:00
Kieran Frewen
5d087aa759 nl80211: validate S1G channel width
Validate the S1G channel width input by user to ensure it matches
that of the requested channel

Signed-off-by: Kieran Frewen <kieran.frewen@morsemicro.com>
Signed-off-by: Bassem Dawood <bassem@morsemicro.com>
Link: https://lore.kernel.org/r/20220420041321.3788789-2-kieran.frewen@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 11:33:39 +02:00
Jakub Kicinski
f43f0cd2d9 wireless-next patches for v5.19
First set of patches for v5.19 and this is a big one. We have two new
 drivers, a change in mac80211 STA API affecting most drivers and
 ath11k getting support for WCN6750. And as usual lots of fixes and
 cleanups all over.
 
 Major changes:
 
 new drivers
 
 * wfx: silicon labs devices
 
 * plfxlc: pureLiFi X, XL, XC devices
 
 mac80211
 
 * host based BSS color collision detection
 
 * prepare sta handling for IEEE 802.11be Multi-Link Operation (MLO) support
 
 rtw88
 
 * support TP-Link T2E devices
 
 rtw89
 
 * support firmware crash simulation
 
 * preparation for 8852ce hardware support
 
 ath11k
 
 * Wake-on-WLAN support for QCA6390 and WCN6855
 
 * device recovery (firmware restart) support for QCA6390 and WCN6855
 
 * support setting Specific Absorption Rate (SAR) for WCN6855
 
 * read country code from SMBIOS for WCN6855/QCA6390
 
 * support for WCN6750
 
 wcn36xx
 
 * support for transmit rate reporting to user space
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Merge tag 'wireless-next-2022-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v5.19

First set of patches for v5.19 and this is a big one. We have two new
drivers, a change in mac80211 STA API affecting most drivers and
ath11k getting support for WCN6750. And as usual lots of fixes and
cleanups all over.

Major changes:

new drivers
 - wfx: silicon labs devices
 - plfxlc: pureLiFi X, XL, XC devices

mac80211
 - host based BSS color collision detection
 - prepare sta handling for IEEE 802.11be Multi-Link Operation (MLO) support

rtw88
 - support TP-Link T2E devices

rtw89
 - support firmware crash simulation
 - preparation for 8852ce hardware support

ath11k
 - Wake-on-WLAN support for QCA6390 and WCN6855
 - device recovery (firmware restart) support for QCA6390 and WCN6855
 - support setting Specific Absorption Rate (SAR) for WCN6855
 - read country code from SMBIOS for WCN6855/QCA6390
 - support for WCN6750

wcn36xx
 - support for transmit rate reporting to user space

* tag 'wireless-next-2022-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (228 commits)
  rtw89: 8852c: rfk: add DPK
  rtw89: 8852c: rfk: add IQK
  rtw89: 8852c: rfk: add RX DCK
  rtw89: 8852c: rfk: add RCK
  rtw89: 8852c: rfk: add TSSI
  rtw89: 8852c: rfk: add LCK
  rtw89: 8852c: rfk: add DACK
  rtw89: 8852c: rfk: add RFK tables
  plfxlc: fix le16_to_cpu warning for beacon_interval
  rtw88: remove a copy of the NAPI_POLL_WEIGHT define
  carl9170: tx: fix an incorrect use of list iterator
  wil6210: use NAPI_POLL_WEIGHT for napi budget
  ath10k: remove a copy of the NAPI_POLL_WEIGHT define
  ath11k: Add support for WCN6750 device
  ath11k: Datapath changes to support WCN6750
  ath11k: HAL changes to support WCN6750
  ath11k: Add QMI changes for WCN6750
  ath11k: Fetch device information via QMI for WCN6750
  ath11k: Add register access logic for WCN6750
  ath11k: Add HW params for WCN6750
  ...
====================

Link: https://lore.kernel.org/r/20220503153622.C1671C385A4@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-03 17:27:51 -07:00
Johannes Berg
a75971bc2b nl80211: show SSID for P2P_GO interfaces
There's no real reason not to send the SSID to userspace
when it requests information about P2P_GO, it is, in that
respect, exactly the same as AP interfaces. Fix that.

Fixes: 44905265bc ("nl80211: don't expose wdev->ssid for most interfaces")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220318134656.14354ae223f0.Ia25e85a512281b92e1645d4160766a4b1a471597@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-04-11 15:35:12 +02:00
Rameshkumar Sundaram
a5199b5626 cfg80211: hold bss_lock while updating nontrans_list
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: 0b8fb8235b ("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>
2022-04-11 11:55:36 +02:00
Johannes Berg
6624bb34b4 nl80211: correctly check NL80211_ATTR_REG_ALPHA2 size
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>
2022-04-11 11:55:33 +02:00
Jakub Kicinski
0b3660695e brcmfmac
* add BCM43454/6 support
 
 rtw89
  * add support for 160 MHz channels and 6 GHz band
  * hardware scan support
 
 iwlwifi
  * support UHB TAS enablement via BIOS
  * remove a bunch of W=1 warnings
  * add support for channel switch offload
  * support 32 Rx AMPDU sessions in newer devices
  * add support for a couple of new devices
  * add support for band disablement via BIOS
 
 mt76
  * mt7915 thermal management improvements
  * SAR support for more mt76 drivers
  * mt7986 wmac support on mt7915
 
 ath11k
  * debugfs interface to configure firmware debug log level
  * debugfs interface to test Target Wake Time (TWT)
  * provide 802.11ax High Efficiency (HE) data via radiotap
 
 ath9k
  * use hw_random API instead of directly dumping into random.c
 
 wcn36xx
  * fix wcn3660 to work on 5 GHz band
 
 ath6kl
  * add device ID for WLU5150-D81
 
 cfg80211/mac80211
  * initial EHT (from 802.11be) support
    (EHT rates, 320 MHz, larger block-ack)
  * support disconnect on HW restart
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Merge tag 'wireless-next-2022-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
brcmfmac
 * add BCM43454/6 support

rtw89
 * add support for 160 MHz channels and 6 GHz band
 * hardware scan support

iwlwifi
 * support UHB TAS enablement via BIOS
 * remove a bunch of W=1 warnings
 * add support for channel switch offload
 * support 32 Rx AMPDU sessions in newer devices
 * add support for a couple of new devices
 * add support for band disablement via BIOS

mt76
 * mt7915 thermal management improvements
 * SAR support for more mt76 drivers
 * mt7986 wmac support on mt7915

ath11k
 * debugfs interface to configure firmware debug log level
 * debugfs interface to test Target Wake Time (TWT)
 * provide 802.11ax High Efficiency (HE) data via radiotap

ath9k
 * use hw_random API instead of directly dumping into random.c

wcn36xx
 * fix wcn3660 to work on 5 GHz band

ath6kl
 * add device ID for WLU5150-D81

cfg80211/mac80211
 * initial EHT (from 802.11be) support
   (EHT rates, 320 MHz, larger block-ack)
 * support disconnect on HW restart

* tag 'wireless-next-2022-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (247 commits)
  mac80211: Add support to trigger sta disconnect on hardware restart
  mac80211: fix potential double free on mesh join
  mac80211: correct legacy rates check in ieee80211_calc_rx_airtime
  nl80211: fix typo of NL80211_IF_TYPE_OCB in documentation
  mac80211: Use GFP_KERNEL instead of GFP_ATOMIC when possible
  mac80211: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE
  rtw89: 8852c: process logic efuse map
  rtw89: 8852c: process efuse of phycap
  rtw89: support DAV efuse reading operation
  rtw89: 8852c: add chip::dle_mem
  rtw89: add page_regs to handle v1 chips
  rtw89: add chip_info::{h2c,c2h}_reg to support more chips
  rtw89: add hci_func_en_addr to support variant generation
  rtw89: add power_{on/off}_func
  rtw89: read chip version depends on chip ID
  rtw89: pci: use a struct to describe all registers address related to DMA channel
  rtw89: pci: add V1 of PCI channel address
  rtw89: pci: add struct rtw89_pci_info
  rtw89: 8852c: add 8852c empty files
  MAINTAINERS: add devicetree bindings entry for mt76
  ...

====================

Link: https://lore.kernel.org/r/20220311124029.213470-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-11 13:00:17 -08:00
Sebastian Andrzej Siewior
f9834dbdd3 wireless: Use netif_rx().
Since commit
   baebdf48c3 ("net: dev: Makes sure netif_rx() can be invoked in any context.")

the function netif_rx() can be used in preemptible/thread context as
well as in interrupt context.

Use netif_rx().

Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-06 11:05:31 +00:00
Jakub Kicinski
80901bff81 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
net/batman-adv/hard-interface.c
  commit 690bb6fb64 ("batman-adv: Request iflink once in batadv-on-batadv check")
  commit 6ee3c393ee ("batman-adv: Demote batadv-on-batadv skip error message")
https://lore.kernel.org/all/20220302163049.101957-1-sw@simonwunderlich.de/

net/smc/af_smc.c
  commit 4d08b7b57e ("net/smc: Fix cleanup when register ULP fails")
  commit 462791bbfa ("net/smc: add sysctl interface for SMC")
https://lore.kernel.org/all/20220302112209.355def40@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-03 11:55:12 -08:00
Sreeramya Soratkal
e50b88c4f0 nl80211: Update bss channel on channel switch for P2P_CLIENT
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>
2022-03-02 22:37:05 +01:00
Johannes Berg
a12f76345e cfg80211: fix CONFIG_CFG80211_EXTRA_REGDB_KEYDIR typo
The kbuild change here accidentally removed not only the
unquoting, but also the last character of the variable
name. Fix that.

Fixes: 129ab0d2d9 ("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>
2022-03-01 14:10:14 +01:00
Jiasheng Jiang
6ad27f522c nl80211: Handle nla_memdup failures in handle_nan_filter
As there's potential for failure of the nla_memdup(),
check the return value.

Fixes: a442b761b2 ("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>
2022-03-01 11:15:08 +01:00
Jakub Kicinski
6b5567b1b2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-02-17 11:44:20 -08:00
Ilan Peer
ea05fd3581 cfg80211: Support configuration of station EHT capabilities
Add attributes and some code bits to support userspace passing
in EHT capabilities of stations.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.ecf0b3ff9627.Icb4a5f2ec7b41d9008ac4cfc16c59baeb84793d3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:43:25 +01:00
Ilan Peer
31846b6578 cfg80211: add NO-EHT flag to regulatory
This may be necessary in some cases, add a flag and propagate
it, just like the NO-HE that already exists.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
[split off from a combined 320/no-EHT patch]
Link: https://lore.kernel.org/r/20220214173004.dbb85a7b86bb.Ifc1e2daac51c1cc5f895ccfb79faf5eaec3950ec@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:43:14 +01:00
Sriram R
c2b3d7699f nl80211: add support for 320MHz channel limitation
Add support to advertise drivers or regulatory limitations on 320 MHz
channels to userspace.

Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Co-authored-by: Karthikeyan Periyasamy <quic_periyasia@quicinc.com>
Signed-off-by: Karthikeyan Periyasamy <quic_periyasia@quicinc.com>
Co-authored-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-6-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-3-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:43:02 +01:00
Veerendranath Jakkam
cfb14110ac nl80211: add EHT MCS support
Add support for reporting and calculating EHT bitrates.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-7-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-2-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:42:52 +01:00
Jia Ding
3743bec612 cfg80211: Add support for EHT 320 MHz channel width
Add 320 MHz support in the channel def and center frequency validation
with compatible check.

Signed-off-by: Jia Ding <quic_jiad@quicinc.com>
Co-authored-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Co-authored-by: Muna Sinada <quic_msinada@quicinc.com>
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Co-authored-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-5-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-1-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:42:39 +01:00
Ilan Peer
5cd5a8a3e2 cfg80211: Add data structures to capture EHT capabilities
And advertise EHT capabilities to user space when supported.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.6fb70658529f.I2413a37c8f7d2d6d638038a3d95360a3fce0114d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:42:29 +01:00
Johannes Berg
a3a20feb32 nl80211: accept only HE capability elements with valid size
The kernel (driver code) should be able to assume that a station's
HE capabilities are not badly sized, so reject them if they are.

Link: https://lore.kernel.org/r/20220214172921.80b710d45cb7.Id57ce32f9538a40e36c620fabedbd2c73346ef56@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:41:06 +01:00
Johannes Berg
024fcf5efd nl80211: use RCU to read regdom in reg get/dump
Use RCU here to read the regdomain, this will allow us
to remove the RTNL locking from the setter.

Note in nl80211_get_reg_do() we still need the RTNL to
do the wiphy lookup.

Link: https://lore.kernel.org/r/20220214101820.5d4acbcf2a46.Ibfc91980439862125e983d9adeebaba73fe38e2d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-16 15:40:11 +01:00
Johannes Berg
f0a6fd1527 cfg80211: fix race in netlink owner interface destruction
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: ea6b2098dd ("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>
2022-02-04 16:31:44 +01:00
Johannes Berg
1b198233a3 cfg80211: pmsr: remove useless ifdef guards
This isn't a header file, I guess I must've copied from
the header file and forgotten to remove the guards.

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.20220202104617.330d03623b08.Idda91cd6f1c7bd865a50c47d408e5cdab0fd951f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-04 16:26:16 +01:00
Avraham Stern
5666ee154f cfg80211: don't add non transmitted BSS to 6GHz scanned channels
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>
2022-02-04 16:24:41 +01:00
Johannes Berg
667aa74264 cfg80211/mac80211: assume CHECKSUM_COMPLETE includes SNAP
There's currently only one driver that reports CHECKSUM_COMPLETE,
that is iwlwifi. The current hardware there calculates checksum
after the SNAP header, but only RFC 1042 (and some other cases,
but replicating the exact hardware logic for corner cases in the
driver seemed awkward.)

Newer generations of hardware will checksum _including_ the SNAP,
which makes things easier.

To handle that, simply always assume the checksum _includes_ the
SNAP header, which this patch does, requiring to first add it
for older iwlwifi hardware, and then remove it again later on
conversion.

Alternatively, we could have:

 1) Always assumed the checksum starts _after_ the SNAP header;
    the problem with this is that we'd have to replace the exact
    "what is the SNAP" check in iwlwifi that cfg80211 has.

 2) Made it configurable with some flag, but that seemed like too
    much complexity.

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.20220202104617.230736e19e0e.I3e6745873585ad943c152fab9e23b5221f17a95f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-02-04 16:23:19 +01:00
Linus Torvalds
fd6f57bfda Kbuild updates for v5.17
- 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
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Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

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
  ...
2022-01-19 11:15:19 +02:00
Masahiro Yamada
129ab0d2d9 kbuild: do not quote string values in include/config/auto.conf
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>
2022-01-08 18:03:57 +09:00
Jakub Kicinski
294e70c952 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
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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>
2021-12-21 07:41:52 -08:00
Sriram R
701fdfe348 cfg80211: Enable regulatory enforcement checks for drivers supporting mesh iface
Currently cfg80211 checks for invalid channels whenever there is a
regulatory update and stops the active interfaces if it is operating on
an unsupported channel in the new regulatory domain.

This is done based on a regulatory flag REGULATORY_IGNORE_STALE_KICKOFF
set during wiphy registration which disables this enforcement when
unsupported interface modes are supported by driver.

Add support to enable this enforcement when Mesh Point interface type
is advertised by drivers.

Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Link: https://lore.kernel.org/r/1638409120-28997-1-git-send-email-quic_srirrama@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 11:18:30 +01:00
Johannes Berg
75cca1fac2 cfg80211: refactor cfg80211_get_ies_channel_number()
Now that this is no longer part of the bigger function,
we can get rid of the channel_num variable. Also change
the function to use the struct element helpers, instead
of open-coding the element handling.

Link: https://lore.kernel.org/r/20211202130913.a0adf67a9319.I6db0340a34fff18d78e9cd512f4abf855da4e43a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 10:57:19 +01:00
Veerendranath Jakkam
47301a74bb nl80211: Add support to set AP settings flags with single attribute
In previous method each AP settings flag is represented by a top-level
flag attribute and conversion to enum cfg80211_ap_settings_flags had to
be done before sending them to driver. This commit is to make it easier
to define new AP settings flags and sending them to driver.

This commit also deprecate sending of
%NL80211_ATTR_EXTERNAL_AUTH_SUPPORT in %NL80211_CMD_START_AP. But to
maintain backwards compatibility checks for
%NL80211_ATTR_EXTERNAL_AUTH_SUPPORT in %NL80211_CMD_START_AP when
%NL80211_ATTR_AP_SETTINGS_FLAGS not present in %NL80211_CMD_START_AP.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
Link: https://lore.kernel.org/r/1637911519-21306-1-git-send-email-vjakkam@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 10:41:26 +01:00
Ayala Beker
7f599aeccb cfg80211: Use the HE operation IE to determine a 6GHz BSS channel
A non-collocated AP whose primary channel is not a PSC channel
may transmit a duplicated beacon on the corresponding PSC channel
in which it would indicate its true primary channel.
Use this inforamtion contained in the HE operation IE to determine
the primary channel of the AP.
In case of invalid infomration ignore it and use the channel
the frame was received on.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211202143322.71eb2176e54e.I130f678e4aa390973ab39d838bbfe7b2d54bff8e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 10:38:32 +01:00
Lorenzo Bianconi
a95bfb876f cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard
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>
2021-12-20 10:37:36 +01:00
Ilan Peer
a083ee8a4e cfg80211: Add support for notifying association comeback
Thought the underline driver MLME can handle association temporal
rejection with comeback, it is still useful to notify this to
user space, as user space might want to handle the temporal
rejection differently. For example, in case the comeback time
is too long, user space can deauthenticate immediately and try
to associate with a different AP.

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.20211129152938.2467809e8cb3.I45574185b582666bc78eef0c29a4c36b478e5382@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 10:37:03 +01:00
Johannes Berg
3bb1ccc4ed cfg80211: simplify cfg80211_chandef_valid()
There are a lot of duplicate checks in this function to
check the delta between the control channel and CF1.
With the addition of 320 MHz, this will become even more.
Simplify the code so that the common checks are done
only once for multiple bandwidths.

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.20211129152938.2d0240b07f11.I759e8e990f5386ba2b56ffb2488a8d4e16e22c1b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-20 10:36:24 +01:00
Ilan Peer
e08ebd6d7b cfg80211: Acquire wiphy mutex on regulatory work
The function cfg80211_reg_can_beacon_relax() expects wiphy
mutex to be held when it is being called. However, when
reg_leave_invalid_chans() is called the mutex is not held.
Fix it by acquiring the lock before calling the function.

Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
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.20211202152831.527686cda037.I40ad9372a47cbad53b4aae7b5a6ccc0dc3fddf8b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-14 11:20:11 +01:00
Finn Behrens
37d3311424 nl80211: remove reload flag from regulatory_request
This removes the previously unused reload flag, which was introduced in
1eda919126.
The request is handled as NL80211_REGDOM_SET_BY_CORE, which is parsed
unconditionally.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: 1eda919126 ("nl80211: reset regdom when reloading regdb")
Link: https://lore.kernel.org/all/YaZuKYM5bfWe2Urn@archlinux-ax161/
Signed-off-by: Finn Behrens <me@kloenk.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/YadvTolO8rQcNCd/@gimli.kloenk.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-12-14 11:18:46 +01:00
Finn Behrens
1eda919126 nl80211: reset regdom when reloading regdb
Reload the regdom when the regulatory db is reloaded.
Otherwise, the user had to change the regulatoy domain
to a different one and then reset it to the correct
one to have a new regulatory db take effect after a
reload.

Signed-off-by: Finn Behrens <fin@nyantec.com>
Link: https://lore.kernel.org/r/YaIIZfxHgqc/UTA7@gimli.kloenk.dev
[edit commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-29 09:31:56 +01:00
Johannes Berg
fb8b53acf6 cfg80211: use ieee80211_bss_get_elem() instead of _get_ie()
Use the structured helper for finding an element instead of
the unstructured ieee80211_bss_get_ie().

Link: https://lore.kernel.org/r/20210930131130.e94709f341c3.I4ddb7fcb40efca27987deda7f9a144a5702ebfae@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-28 21:53:04 +01:00
Lorenzo Bianconi
8415816493 cfg80211: allow continuous radar monitoring on offchannel chain
Allow continuous radar detection on the offchannel chain in order
to switch to the monitored channel whenever the underlying driver
reports a radar pattern on the main channel.

Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/d46217310a49b14ff0e9c002f0a6e0547d70fd2c.1637071350.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-26 11:50:27 +01:00
Lorenzo Bianconi
c47240cb46 cfg80211: schedule offchan_cac_abort_wk in cfg80211_radar_event
If necessary schedule offchan_cac_abort_wk work in cfg80211_radar_event
routine adding offchan parameter to cfg80211_radar_event signature.
Rename cfg80211_radar_event in __cfg80211_radar_event and introduce
the two following inline helpers:
- cfg80211_radar_event
- cfg80211_offchan_radar_event
Doing so the drv will not need to run cfg80211_offchan_cac_abort() after
radar detection on the offchannel chain.

Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/3ff583e021e3343a3ced54a7b09b5e184d1880dc.1637062727.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-26 11:49:54 +01:00
liuguoqiang
3536672bbd cfg80211: delete redundant free code
When kzalloc failed and rdev->sacn_req or rdev->scan_msg is null, pass a
null pointer to kfree is redundant, delete it and return directly.

Signed-off-by: liuguoqiang <liuguoqiang@uniontech.com>
Link: https://lore.kernel.org/r/20211115092139.24407-1-liuguoqiang@uniontech.com
[remove now unused creq = NULL assigment]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-26 11:49:17 +01:00
Lorenzo Bianconi
91e89c7732 cfg80211: fix possible NULL pointer dereference in cfg80211_stop_offchan_radar_detection
Fix the following NULL pointer dereference in
cfg80211_stop_offchan_radar_detection routine that occurs when hostapd
is stopped during the CAC on offchannel chain:

Sat Jan  1 0[  779.567851]   ESR = 0x96000005
0:12:50 2000 dae[  779.572346]   EC = 0x25: DABT (current EL), IL = 32 bits
mon.debug hostap[  779.578984]   SET = 0, FnV = 0
d: hostapd_inter[  779.583445]   EA = 0, S1PTW = 0
face_deinit_free[  779.587936] Data abort info:
: num_bss=1 conf[  779.592224]   ISV = 0, ISS = 0x00000005
->num_bss=1
Sat[  779.597403]   CM = 0, WnR = 0
 Jan  1 00:12:50[  779.601749] user pgtable: 4k pages, 39-bit VAs, pgdp=00000000418b2000
 2000 daemon.deb[  779.609601] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
ug hostapd: host[  779.619657] Internal error: Oops: 96000005 [#1] SMP
[  779.770810] CPU: 0 PID: 2202 Comm: hostapd Not tainted 5.10.75 #0
[  779.776892] Hardware name: MediaTek MT7622 RFB1 board (DT)
[  779.782370] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[  779.788384] pc : cfg80211_chandef_valid+0x10/0x490 [cfg80211]
[  779.794128] lr : cfg80211_check_station_change+0x3190/0x3950 [cfg80211]
[  779.800731] sp : ffffffc01204b7e0
[  779.804036] x29: ffffffc01204b7e0 x28: ffffff80039bdc00
[  779.809340] x27: 0000000000000000 x26: ffffffc008cb3050
[  779.814644] x25: 0000000000000000 x24: 0000000000000002
[  779.819948] x23: ffffff8002630000 x22: ffffff8003e748d0
[  779.825252] x21: 0000000000000cc0 x20: ffffff8003da4a00
[  779.830556] x19: 0000000000000000 x18: ffffff8001bf7ce0
[  779.835860] x17: 00000000ffffffff x16: 0000000000000000
[  779.841164] x15: 0000000040d59200 x14: 00000000000019c0
[  779.846467] x13: 00000000000001c8 x12: 000636b9e9dab1c6
[  779.851771] x11: 0000000000000141 x10: 0000000000000820
[  779.857076] x9 : 0000000000000000 x8 : ffffff8003d7d038
[  779.862380] x7 : 0000000000000000 x6 : ffffff8003d7d038
[  779.867683] x5 : 0000000000000e90 x4 : 0000000000000038
[  779.872987] x3 : 0000000000000002 x2 : 0000000000000004
[  779.878291] x1 : 0000000000000000 x0 : 0000000000000000
[  779.883594] Call trace:
[  779.886039]  cfg80211_chandef_valid+0x10/0x490 [cfg80211]
[  779.891434]  cfg80211_check_station_change+0x3190/0x3950 [cfg80211]
[  779.897697]  nl80211_radar_notify+0x138/0x19c [cfg80211]
[  779.903005]  cfg80211_stop_offchan_radar_detection+0x7c/0x8c [cfg80211]
[  779.909616]  __cfg80211_leave+0x2c/0x190 [cfg80211]
[  779.914490]  cfg80211_register_netdevice+0x1c0/0x6d0 [cfg80211]
[  779.920404]  raw_notifier_call_chain+0x50/0x70
[  779.924841]  call_netdevice_notifiers_info+0x54/0xa0
[  779.929796]  __dev_close_many+0x40/0x100
[  779.933712]  __dev_change_flags+0x98/0x190
[  779.937800]  dev_change_flags+0x20/0x60
[  779.941628]  devinet_ioctl+0x534/0x6d0
[  779.945370]  inet_ioctl+0x1bc/0x230
[  779.948849]  sock_do_ioctl+0x44/0x200
[  779.952502]  sock_ioctl+0x268/0x4c0
[  779.955985]  __arm64_sys_ioctl+0xac/0xd0
[  779.959900]  el0_svc_common.constprop.0+0x60/0x110
[  779.964682]  do_el0_svc+0x1c/0x24
[  779.967990]  el0_svc+0x10/0x1c
[  779.971036]  el0_sync_handler+0x9c/0x120
[  779.974950]  el0_sync+0x148/0x180
[  779.978259] Code: a9bc7bfd 910003fd a90153f3 aa0003f3 (f9400000)
[  779.984344] ---[ end trace 0e67b4f5d6cdeec7 ]---
[  779.996400] Kernel panic - not syncing: Oops: Fatal exception
[  780.002139] SMP: stopping secondary CPUs
[  780.006057] Kernel Offset: disabled
[  780.009537] CPU features: 0x0000002,04002004
[  780.013796] Memory Limit: none

Fixes: b8f5facf286b ("cfg80211: implement APIs for dedicated radar detection HW")
Reported-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/c2e34c065bf8839c5ffa45498ae154021a72a520.1635958796.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-26 11:46:12 +01:00
Lorenzo Bianconi
1507b15319 cfg80211: move offchan_cac_event to a dedicated work
In order to make cfg80211_offchan_cac_abort() (renamed from
cfg80211_offchan_cac_event) callable in other contexts and
without so much locking restrictions, make it trigger a new
work instead of operating directly.

Do some other renames while at it to clarify.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/6145c3d0f30400a568023f67981981d24c7c6133.1635325205.git.lorenzo@kernel.org
[rewrite commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-19 09:38:50 +01:00
Lorenzo Bianconi
bc2dfc0283 cfg80211: implement APIs for dedicated radar detection HW
If a dedicated (off-channel) radar detection hardware (chain)
is available in the hardware/driver, allow this to be used by
calling the NL80211_CMD_RADAR_DETECT command with a new flag
attribute requesting off-channel radar detection is used.

Offchannel CAC (channel availability check) avoids the CAC
downtime when switching to a radar channel or when turning on
the AP.

Drivers advertise support for this using the new feature flag
NL80211_EXT_FEATURE_RADAR_OFFCHAN.

Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/7468e291ef5d05d692c1738d25b8f778d8ea5c3f.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/1e60e60fef00e14401adae81c3d49f3e5f307537.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/85fa50f57fc3adb2934c8d9ca0be30394de6b7e8.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/4b6c08671ad59aae0ac46fc94c02f31b1610eb72.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/241849ccaf2c228873c6f8495bf87b19159ba458.1634979655.git.lorenzo@kernel.org
[remove offchan_mutex, fix cfg80211_stop_offchan_radar_detection(),
 remove gfp_t argument, fix documentation, fix tracing]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-19 09:38:49 +01:00
Johannes Berg
ce6b697499 nl80211: fix radio statistics in survey dump
Even if userspace specifies the NL80211_ATTR_SURVEY_RADIO_STATS
attribute, we cannot get the statistics because we're not really
parsing the incoming attributes properly any more.

Fix this by passing the attrbuf to nl80211_prepare_wdev_dump()
and filling it there, if given, and using a local version only
if no output is desired.

Since I'm touching it anyway, make nl80211_prepare_wdev_dump()
static.

Fixes: 50508d941c ("cfg80211: use parallel_ops for genl")
Reported-by: Jan Fuchs <jf@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Sven Eckelmann <sven@narfation.org>
Link: https://lore.kernel.org/r/20211029092539.2851b4799386.If9736d4575ee79420cbec1bd930181e1d53c7317@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-15 10:51:51 +01:00
Nguyen Dinh Phi
563fbefed4 cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
If the userspace tools switch from NL80211_IFTYPE_P2P_GO to
NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it
does not call the cleanup cfg80211_stop_ap(), this leads to the
initialization of in-use data. For example, this path re-init the
sdata->assigned_chanctx_list while it is still an element of
assigned_vifs list, and makes that linked list corrupt.

Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Reported-by: syzbot+bbf402b783eeb6d908db@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20211027173722.777287-1-phind.uet@gmail.com
Cc: stable@vger.kernel.org
Fixes: ac800140c2 ("cfg80211: .stop_ap when interface is going down")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-11-15 10:51:13 +01:00
Jakub Kicinski
7df621a3ee Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
include/net/sock.h
  7b50ecfcc6 ("net: Rename ->stream_memory_read to ->sock_is_readable")
  4c1e34c0db ("vsock: Enable y2038 safe timeval for timeout")

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
  0daa55d033 ("octeontx2-af: cn10k: debugfs for dumping LMTST map table")
  e77bcdd1f6 ("octeontx2-af: Display all enabled PF VF rsrc_alloc entries.")

Adjacent code addition in both cases, keep both.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-28 10:43:58 -07:00
Janusz Dziedzic
689a0a9f50 cfg80211: correct bridge/4addr mode check
Without the patch we fail:

$ sudo brctl addbr br0
$ sudo brctl addif br0 wlp1s0
$ sudo iw wlp1s0 set 4addr on
command failed: Device or resource busy (-16)

Last command failed but iface was already in 4addr mode.

Fixes: ad4bb6f888 ("cfg80211: disallow bridging managed/adhoc interfaces")
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
Link: https://lore.kernel.org/r/20211024201546.614379-1-janusz.dziedzic@gmail.com
[add fixes tag, fix indentation, edit commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-25 15:23:20 +02:00
Johannes Berg
09b1d5dc6c cfg80211: fix management registrations locking
The management registrations locking was broken, the list was
locked for each wdev, but cfg80211_mgmt_registrations_update()
iterated it without holding all the correct spinlocks, causing
list corruption.

Rather than trying to fix it with fine-grained locking, just
move the lock to the wiphy/rdev (still need the list on each
wdev), we already need to hold the wdev lock to change it, so
there's no contention on the lock in any case. This trivially
fixes the bug since we hold one wdev's lock already, and now
will hold the lock that protects all lists.

Cc: stable@vger.kernel.org
Reported-by: Jouni Malinen <j@w1.fi>
Fixes: 6cd536fe62 ("cfg80211: change internal management frame registration API")
Link: https://lore.kernel.org/r/20211025133111.5cf733eab0f4.I7b0abb0494ab712f74e2efcd24bb31ac33f7eee9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-25 15:20:22 +02:00
Srinivasan Raju
63fa042666 nl80211: Add LC placeholder band definition to nl80211_band
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>
2021-10-21 17:25:17 +02:00
Wen Gong
97981d89a1 cfg80211: separate get channel number from ies
Get channel number from ies is a common logic, so separate it to a new
function, which could also be used by lower driver.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210930081533.4898-1-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-21 17:25:16 +02:00
Johannes Berg
a3eca81792 cfg80211: scan: use element finding functions in easy cases
There are a few easy cases where we only check for NULL or
have just simple use of the result, this can be done with
the element finding functions instead.

Link: https://lore.kernel.org/r/20210930131130.f27c8a7ec264.Iadb03c4307e9216e080ce513e8ad4048cd020b25@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-21 17:01:20 +02:00
Johannes Berg
153e2a11c9 nl80211: use element finding functions
The element finding functions are safer, so use them
instead of the "find_ie" functions.

Link: https://lore.kernel.org/r/20210930131130.b838f139cc8e.I2b641262d3fc6e0d498719bf343fdc1c0833b845@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-21 17:01:18 +02:00
Johannes Berg
a2083eeb11 cfg80211: scan: fix RCU in cfg80211_add_nontrans_list()
The SSID pointer is pointing to RCU protected data, so we
need to have it under rcu_read_lock() for the entire use.
Fix this.

Cc: stable@vger.kernel.org
Fixes: 0b8fb8235b ("cfg80211: Parsing of Multiple BSSID information in scanning")
Link: https://lore.kernel.org/r/20210930131120.6ddfc603aa1d.I2137344c4e2426525b1a8e4ce5fca82f8ecbfe7e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-01 11:02:27 +02:00
John Crispin
dc1e3cb8da nl80211: MBSSID and EMA support in AP mode
Add new attributes to configure support for multiple BSSID
and advanced multi-BSSID advertisements (EMA) in AP mode.

- NL80211_ATTR_MBSSID_CONFIG used for per interface configuration.
- NL80211_ATTR_MBSSID_ELEMS used to MBSSID elements for beacons.

Memory for the elements is allocated dynamically. This change frees
the memory in existing functions which call nl80211_parse_beacon(),
a comment is added to indicate the new references to do the same.

Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Link: https://lore.kernel.org/r/20210916025437.29138-2-alokad@codeaurora.org
[don't leave ERR_PTR hanging around]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-27 15:33:03 +02:00
Johannes Berg
05075fe745 nl80211: don't kfree() ERR_PTR() value
When parse_acl_data() fails, we get an ERR_PTR() value and
then "goto out;", in this case we'd attempt to kfree() it.
Fix that.

Fixes: 9e263e193a ("nl80211: don't put struct cfg80211_ap_settings on stack")
Link: https://lore.kernel.org/r/20210927134402.86c5ae06c952.Ic51e234d998b9045665e5ff8b6db7e29f25d70c0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-27 15:32:54 +02:00
Johannes Berg
e53e9828a8 cfg80211: always free wiphy specific regdomain
In the (somewhat unlikely) event that we allocate a wiphy, then
add a regdomain to it, and then fail registration, we leak the
regdomain. Fix this by just always freeing it at the end, in the
normal cases we'll free (and NULL) it during wiphy_unregister().
This happened when the wiphy settings were bad, and since they
can be controlled by userspace with hwsim, syzbot was able to
find this issue.

Reported-by: syzbot+1638e7c770eef6b6c0d0@syzkaller.appspotmail.com
Fixes: 3e0c3ff36c ("cfg80211: allow multiple driver regulatory_hints()")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210927131105.68b70cef4674.I4b9f0aa08c2af28555963b9fe3d34395bb72e0cc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-27 13:30:33 +02:00
Subrat Mishra
e306784a8d cfg80211: AP mode driver offload for FILS association crypto
Add a driver FILS crypto offload extended capability flag to indicate
that the driver running in AP mode is capable of handling encryption
and decryption of (Re)Association request and response frames.
Add a command to set FILS AAD data to driver.

This feature is supported on drivers running in AP mode only.
This extended capability is exchanged with hostapd during cfg80211
init. If the driver indicates this capability, then before sending the
Authentication response frame, hostapd sets FILS AAD data to the
driver. This allows the driver to decrypt (Re)Association Request
frame and encrypt (Re)Association Response frame. FILS Key derivation
will still be done in hostapd.

Signed-off-by: Subrat Mishra <subratm@codeaurora.org>
Link: https://lore.kernel.org/r/1631685143-13530-1-git-send-email-subratm@codeaurora.org
[fix whitespace]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-27 13:00:51 +02:00
Johannes Berg
9e263e193a nl80211: don't put struct cfg80211_ap_settings on stack
This struct has grown quite a bit, so dynamically allocate
it instead of putting it on the stack.

Link: https://lore.kernel.org/r/20210923161836.5813d881eae3.I0fc0f83905b0bfa332c4f1505e00c13abfca3545@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-23 16:37:47 +02:00
Len Baker
40f231e75a nl80211: prefer struct_size over open coded arithmetic
As noted in the "Deprecated Interfaces, Language Features, Attributes,
and Conventions" documentation [1], size calculations (especially
multiplication) should not be performed in memory allocator (or similar)
function arguments due to the risk of them overflowing. This could lead
to values wrapping around and a smaller allocation being made than the
caller was expecting. Using those allocations could lead to linear
overflows of heap memory and other misbehaviors.

So, use the struct_size() helper to do the arithmetic instead of the
argument "size + count * size" in the kzalloc() functions.

Also, take the opportunity to refactor the memcpy() call to use the
flex_array_size() helper.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments

Signed-off-by: Len Baker <len.baker@gmx.com>
Link: https://lore.kernel.org/r/20210919114040.41522-1-len.baker@gmx.com
[remove unnecessary variable]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-23 13:38:11 +02:00
Johannes Berg
3df15f3451 cfg80211: honour V=1 in certificate code generation
When we generate the code for built-in certificates, honour
the V=1 build option to print out the script doing it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210827131112.dc5492458d55.Idefe4ce8f9681a5ad576d3c6e57c7bff142244de@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-23 13:37:02 +02:00
Sriram R
90bd5bee50 cfg80211: use wiphy DFS domain if it is self-managed
Currently during CAC start or other radar events, the DFS
domain is fetched from cfg based on global DFS domain,
even if the wiphy regdomain disagrees.

But this could be different in case of self managed wiphy's
in case the self managed driver updates its database or supports
regions which has DFS domain set to UNSET in cfg80211 local
regdomain.

So for explicitly self-managed wiphys, just use their DFS
domain.

Signed-off-by: Sriram R <srirrama@codeaurora.org>
Link: https://lore.kernel.org/r/1629934730-16388-1-git-send-email-srirrama@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-08-26 11:04:55 +02:00
Johannes Berg
c448f0fd2c cfg80211: fix BSS color notify trace enum confusion
The wrong enum was used here, leading to warnings.
Just use a u32 instead.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 0d2ab3aea5 ("nl80211: add support for BSS coloring")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-08-18 09:21:52 +02:00
John Crispin
0d2ab3aea5 nl80211: add support for BSS coloring
This patch adds support for BSS color collisions to the wireless subsystem.
Add the required functionality to nl80211 that will notify about color
collisions, triggering the color change and notifying when it is completed.

Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/500b3582aec8fe2c42ef46f3117b148cb7cbceb5.1625247619.git.lorenzo@kernel.org
[remove unnecessary NULL initialisation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-08-17 11:58:21 +02:00
Kees Cook
8c89f7b3d3 mac80211: Use flex-array for radiotap header bitmap
In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally writing across neighboring fields.

The it_present member of struct ieee80211_radiotap_header is treated as a
flexible array (multiple u32s can be conditionally present). In order for
memcpy() to reason (or really, not reason) about the size of operations
against this struct, use of bytes beyond it_present need to be treated
as part of the flexible array. Add a trailing flexible array and
initialize its initial index via pointer arithmetic.

Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210806215305.2875621-1-keescook@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-08-13 09:58:25 +02:00
Kees Cook
5cafd3784a mac80211: radiotap: Use BIT() instead of shifts
IEEE80211_RADIOTAP_EXT has a value of 31, which means if shift was ever
cast to 64-bit, the result would become sign-extended. As a matter of
robustness, just replace all the open-coded shifts with BIT().

Suggested-by: David Sterba <dsterba@suse.cz>
Link: https://lore.kernel.org/lkml/20210728092323.GW5047@twin.jikos.cz/
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210806215112.2874773-1-keescook@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-08-13 09:58:25 +02:00
Yajun Deng
1160dfa178 net: Remove redundant if statements
The 'if (dev)' statement already move into dev_{put , hold}, so remove
redundant if statements.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-05 13:27:50 +01:00
Nguyen Dinh Phi
f9a5c358c8 cfg80211: Fix possible memory leak in function cfg80211_bss_update
When we exceed the limit of BSS entries, this function will free the
new entry, however, at this time, it is the last door to access the
inputed ies, so these ies will be unreferenced objects and cause memory
leak.
Therefore we should free its ies before deallocating the new entry, beside
of dropping it from hidden_list.

Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Link: https://lore.kernel.org/r/20210628132334.851095-1-phind.uet@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-07-23 10:38:18 +02:00
Johannes Berg
0d05996450 nl80211: limit band information in non-split data
In non-split data, we shouldn't be adding S1G and 6 GHz
data (or future bands) since we're really close to the
4k message size limit. Remove those bands, any modern
userspace that can use S1G or 6 GHz should already be
using split dumps, and if not then it needs to update.

Link: https://lore.kernel.org/r/20210712215329.31444162a2c2.I5555312e4a074c84f8b4e7ad79dc4d1fbfc5126c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-07-23 10:35:15 +02:00
Ilan Peer
52bb205213 cfg80211: Support hidden AP discovery over 6GHz band
To discover a hidden AP on the 6GHz band, the probe request
sent to the AP needs to include the AP's SSID, as some APs
would not respond with a probe response based only on short
SSID match.

To support hidden AP discovery over the 6GHz band,
when constructing the specific 6GHz band scan also include
SSIDs that were part of the original scan request, so these
can be used in the probe requests transmitted during scan.

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.20210618133832.218df9d3203c.Ice0f7a2f6a65f1f9710b7898591481baeefaf490@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 13:05:09 +02:00
Johannes Berg
f4f8650588 cfg80211: allow advertising vendor-specific capabilities
There may be cases where vendor-specific elements need to be
used over the air. Rather than have driver or firmware add
them and possibly cause problems that way, add them to the
iftype-data band capabilities. This way we can advertise to
userspace first, and use them in mac80211 next.

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.20210618133832.e8c4f0347276.Iee5964682b3e9ec51fc1cd57a7c62383eaf6ddd7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 13:05:09 +02:00
Miri Korenblit
1b7b3ac8ff cfg80211: set custom regdomain after wiphy registration
We used to set regulatory info before the registration of
the device and then the regulatory info didn't get set, because
the device isn't registered so there isn't a device to set the
regulatory info for. So set the regulatory info after the device
registration.
Call reg_process_self_managed_hints() once again after the device
registration because it does nothing before it.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618133832.c96eadcffe80.I86799c2c866b5610b4cf91115c21d8ceb525c5aa@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 13:05:09 +02:00
Johannes Berg
be989891e4 cfg80211: add cfg80211_any_usable_channels()
This helper function checks if there are any usable channels on
any of the given bands with the given properties (as expressed
by disallowed channel flags).

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.20210618133832.2b613addaa85.Idaf8b859089490537878a7de5c7453a873a3f638@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 13:05:08 +02:00
Johannes Berg
b767ecdaf9 cfg80211: reg: improve bad regulatory warning
There's a WARN_ON here but it says nothing, and the later
dump of the regdomain aren't usually printed. As a first
step, include the regdomain code in the WARN_ON message,
just like in other similar instances.

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.20210618133832.853ffdd6c62b.I63e37b2ab184ee3653686e4df4dd23eb303687d2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 12:42:49 +02:00
Sosthène Guédon
aeddc05fa9 nl80211: Fix typo pmsr->pmsr
This was mis-spelled in the policy, fix that.

Signed-off-by: Sosthène Guédon <sosthene@guedon.gdn>
Link: https://lore.kernel.org/r/YLkT27RG0DaWLUot@arch.localdomain
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 12:37:09 +02:00
Johannes Berg
64a8747238 cfg80211: trace more information in assoc trace event
Add more information to the assoc trace event so we can see
more precisely what's going on and what options were used.

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.20210618133832.86c58fca486d.Iabd8f036d2ef1d770fd20ed3ccd149f32154f430@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 11:29:14 +02:00
Avraham Stern
dd3e4fc75b nl80211/cfg80211: add BSS color to NDP ranging parameters
In NDP ranging, the initiator need to set the BSS color in the NDP
to the BSS color of the responder. Add the BSS color as a parameter
for NDP ranging.

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.20210618133832.f097a6144b59.I27dec8b994df52e691925ea61be4dd4fa6d396c0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 11:29:14 +02:00
Wen Gong
e6ed929b41 wireless: add check of field VHT Extended NSS BW Capable for 160/80+80 MHz setting
Table 9-251—Supported VHT-MCS and NSS Set subfields, it has subfield VHT Extended
NSS BW Capable, its definition is:
Indicates whether the STA is capable of interpreting the Extended NSS BW
Support subfield of the VHT Capabilities Information field.

This patch is to add check for the subfield.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210524033624.16993-1-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 11:29:13 +02:00
Emmanuel Grumbach
358ae88881 cfg80211: expose the rfkill device to the low level driver
This will allow the low level driver to query the rfkill
state.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://lore.kernel.org/r/20210616202826.9833-1-emmanuel.grumbach@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 11:29:13 +02:00
Ping-Ke Shih
9df66d5b9f cfg80211: fix default HE tx bitrate mask in 2G band
In 2G band, a HE sta can only supports HT and HE, but not supports VHT.
In this case, default HE tx bitrate mask isn't filled, when we use iw to
set bitrates without any parameter.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20210609075944.51130-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-06-23 11:02:59 +02:00