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>
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>
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>
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>
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>
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>
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>
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>
netdev->dev_addr will be const soon.
All callers of wdev_address() can take const already.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20211019162816.1384077-2-kuba@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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>
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>
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>
* aggregation handling improvements for some drivers
* hidden AP discovery on 6 GHz and other HE 6 GHz
improvements
* minstrel improvements for no-ack frames
* deferred rate control for TXQs to improve reaction
times
* virtual time-based airtime scheduler
* along with various little cleanups/fixups
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Merge tag 'mac80211-next-for-net-next-2021-06-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes berg says:
====================
Lots of changes:
* aggregation handling improvements for some drivers
* hidden AP discovery on 6 GHz and other HE 6 GHz
improvements
* minstrel improvements for no-ack frames
* deferred rate control for TXQs to improve reaction
times
* virtual time-based airtime scheduler
* along with various little cleanups/fixups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add wiphy_info_once() helper that prints info message only once.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210511211549.30571-1-digetx@gmail.com
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>
The htmldoc produces this warning which was introduced
bu the commit below.
include/net/cfg80211.h:6643: warning: expecting prototype for wiphy_rfkill_set_hw_state().
Prototype was for wiphy_rfkill_set_hw_state_reason() instead
Fixes: 6f779a66dc ("cfg80211: allow specifying a reason for hw_rfkill")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://lore.kernel.org/r/20210413113850.59098-1-emmanuel.grumbach@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
rfkill now allows to report a reason for the hw_rfkill state.
Allow cfg80211 drivers to specify this reason.
Keep the current API to use the default reason
(RFKILL_HARD_BLOCK_SIGNAL).
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://lore.kernel.org/r/20210322204633.102581-4-emmanuel.grumbach@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If register_netdevice() fails after having called cfg80211's
netdev notifier (cfg80211_netdev_notifier_call) it will call
the notifier again with UNREGISTER. This would then lock the
wiphy mutex because we're marked as registered, which causes
a deadlock.
Fix this by separately keeping track of whether or not we're
in the middle of registering to also skip the notifier call
on this unregister.
Reported-by: syzbot+2ae0ca9d7737ad1a62b7@syzkaller.appspotmail.com
Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
Link: https://lore.kernel.org/r/20210201192048.ed8bad436737.I7cae042c44b15f80919a285799a15df467e9d42d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, _everything_ in cfg80211 holds the RTNL, and if you
have a slow USB device (or a few) you can get some bad lock
contention on that.
Fix that by re-adding a mutex to each wiphy/rdev as we had at
some point, so we have locking for the wireless_dev lists and
all the other things in there, and also so that drivers still
don't have to worry too much about it (they still won't get
parallel calls for a single device).
Then, we can restrict the RTNL to a few cases where we add or
remove interfaces and really need the added protection. Some
of the global list management still also uses the RTNL, since
we need to have it anyway for netdev management, but we only
hold the RTNL for very short periods of time here.
Link: https://lore.kernel.org/r/20210122161942.81df9f5e047a.I4a8e1a60b18863ea8c5e6d3a0faeafb2d45b2f40@changeid
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> [marvell driver issues]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We used to not require anything in terms of registering netdevs
with cfg80211, using a netdev notifier instead. However, in the
next patch reducing RTNL locking, this causes big problems, and
the simplest way is to just require drivers to do things better.
Change the registration/unregistration semantics to require the
drivers to call cfg80211_(un)register_netdevice() when this is
happening due to a cfg80211 request, i.e. add_virtual_intf() or
del_virtual_intf() (or if it somehow has to happen in any other
cfg80211 callback).
Otherwise, in other contexts, drivers may continue to use the
normal netdev (un)registration functions as usual.
Internally, we still use the netdev notifier and track (by the
new wdev->registered bool) if the wdev had already been added
to cfg80211 or not.
Link: https://lore.kernel.org/r/20210122161942.cf2f4b65e4e9.Ida8234e50da13eb675b557bac52a713ad4eddf71@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The current phyrate conversion does not include extended MCS and provides
incorrect rates. Add a flag for extended MCS in DMG and add corresponding
phyrate table for the correct conversions using base MCS in DMG specs.
Signed-off-by: Max Chen <mxchen@codeaurora.org>
Link: https://lore.kernel.org/r/1609977050-7089-2-git-send-email-mxchen@codeaurora.org
[reduce data size, make a single WARN]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
A function has a different name between their prototype
and its kernel-doc markup:
../include/net/cfg80211.h:1766: warning: expecting prototype for struct cfg80211_sar_chan_ranges. Prototype was for struct cfg80211_sar_freq_ranges instead
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c7ed4bc4d9e992ead16d3d2df246f3b56dbfb1fb.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
A stray @ caused the kernel-doc parser to not understand
this, fix that. Also add some missing kernel-doc.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 6bdb68cef7 ("nl80211: add common API to configure SAR power limitations")
Fixes: c534e093d8 ("mac80211: add ieee80211_set_sar_specs")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> # build only
Link: https://lore.kernel.org/r/20210106234740.96827c18f9bd.I8b9f0a9cbfe186931ef9640046f414371f216914@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
NL80211_CMD_SET_SAR_SPECS is added to configure SAR from
user space. NL80211_ATTR_SAR_SPEC is used to pass the SAR
power specification when used with NL80211_CMD_SET_SAR_SPECS.
Wireless driver needs to register SAR type, supported frequency
ranges to wiphy, so user space can query it. The index in
frequency range is used to specify which sub band the power
limitation applies to. The SAR type is for compatibility, so later
other SAR mechanism can be implemented without breaking the user
space SAR applications.
Normal process is user space queries the SAR capability, and
gets the index of supported frequency ranges and associates the
power limitation with this index and sends to kernel.
Here is an example of message send to kernel:
8c 00 00 00 08 00 01 00 00 00 00 00 38 00 2b 81
08 00 01 00 00 00 00 00 2c 00 02 80 14 00 00 80
08 00 02 00 00 00 00 00 08 00 01 00 38 00 00 00
14 00 01 80 08 00 02 00 01 00 00 00 08 00 01 00
48 00 00 00
NL80211_CMD_SET_SAR_SPECS: 0x8c
NL80211_ATTR_WIPHY: 0x01(phy idx is 0)
NL80211_ATTR_SAR_SPEC: 0x812b (NLA_NESTED)
NL80211_SAR_ATTR_TYPE: 0x00 (NL80211_SAR_TYPE_POWER)
NL80211_SAR_ATTR_SPECS: 0x8002 (NLA_NESTED)
freq range 0 power: 0x38 in 0.25dbm unit (14dbm)
freq range 1 power: 0x48 in 0.25dbm unit (18dbm)
Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Abhishek Kumar <kuabhs@chromium.org>
Link: https://lore.kernel.org/r/20201203103728.3034-2-cjhuang@codeaurora.org
[minor edits, NLA parse cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't really use this struct, we're now using
struct cfg80211_he_bss_color instead.
Change the one place in mac80211 that's using the old
name to use struct assignment instead of memcpy() and
thus remove the wrong sizeof while at it.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.f6698d97ae4e.Iba2dffcb79c4ab80bde7407609806010b55edfdf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
linux/netdevice.h is included in very many places, touching any
of its dependecies causes large incremental builds.
Drop the linux/ethtool.h include, linux/netdevice.h just needs
a forward declaration of struct ethtool_ops.
Fix all the places which made use of this implicit include.
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/20201120225052.1427503-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
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Merge tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Some updates:
* injection/radiotap updates for new test capabilities
* remove WDS support - even years ago when we turned
it off by default it was already basically unusable
* support for HE (802.11ax) rates for beacons
* support for some vendor-specific HE rates
* many other small features/cleanups
* tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (21 commits)
nl80211: fix kernel-doc warning in the new SAE attribute
cfg80211: remove WDS code
mac80211: remove WDS-related code
rt2x00: remove WDS code
b43legacy: remove WDS code
b43: remove WDS code
carl9170: remove WDS code
ath9k: remove WDS code
wireless: remove CONFIG_WIRELESS_WDS
mac80211: assure that certain drivers adhere to DONT_REORDER flag
mac80211: don't overwrite QoS TID of injected frames
mac80211: adhere to Tx control flag that prevents frame reordering
mac80211: add radiotap flag to assure frames are not reordered
mac80211: save HE oper info in BSS config for mesh
cfg80211: add support to configure HE MCS for beacon rate
nl80211: fix beacon tx rate mask validation
nl80211/cfg80211: fix potential infinite loop
cfg80211: Add support to calculate and report 4096-QAM HE rates
cfg80211: Add support to configure SAE PWE value to drivers
ieee80211: Add definition for WFA DPP
...
====================
Link: https://lore.kernel.org/r/20201113101148.25268-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
