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We currently track whether we're associated and which the
BSS is in the same variable (ifmgd->associated), but for
MLD we'll need to move the BSS pointer to be per link,
while the question whether we're associated or not is for
the whole interface.
Add ifmgd->assoc_bss that stores the pointer and change
ifmgd->associated to be just a bool, so the question of
whether we're associated can continue working after MLD
rework, without requiring changes, while the BSS pointer
will have to be changed/used checked per link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We never use the bssid argument to ieee80211_sta_connection_lost()
so we might as well just remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In client mode, we can't connect to hidden SSID APs or SSIDs not advertised
in beacons on DFS channels, since we're forced to passive scan. Fix this by
sending out a probe request immediately after the first beacon, if active
scan was requested by the user.
Cc: stable@vger.kernel.org
Reported-by: Catrinel Catrinescu <cc@80211.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220420104907.36275-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add new fields in struct beacon_data to store all MBSSID elements.
Generate a beacon template which includes all MBSSID elements.
Move CSA offset to reflect the MBSSID element length.
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Co-developed-by: John Crispin <john@phrozen.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Tested-by: Money Wang <money.wang@mediatek.com>
Link: https://lore.kernel.org/r/5322db3c303f431adaf191ab31c45e151dde5465.1645702516.git.lorenzo@kernel.org
[small cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* 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>
Currently in case of target hardware restart, we just reconfig and
re-enable the security keys and enable the network queues to start
data traffic back from where it was interrupted.
Many ath10k wifi chipsets have sequence numbers for the data
packets assigned by firmware and the mac sequence number will
restart from zero after target hardware restart leading to mismatch
in the sequence number expected by the remote peer vs the sequence
number of the frame sent by the target firmware.
This mismatch in sequence number will cause out-of-order packets
on the remote peer and all the frames sent by the device are dropped
until we reach the sequence number which was sent before we restarted
the target hardware
In order to fix this, we trigger a sta disconnect, in case of target
hw restart. After this there will be a fresh connection and thereby
avoiding the dropping of frames by remote peer.
The right fix would be to pull the entire data path into the host
which is not feasible or would need lots of complex changes and
will still be inefficient.
Tested on ath10k using WCN3990, QCA6174
Signed-off-by: Youghandhar Chintala <youghand@codeaurora.org>
Link: https://lore.kernel.org/r/20220308115325.5246-2-youghand@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we get anti-clogging token required (added by the commit
mentioned below), or the other status codes added by the later
commit 4e56cde15f7d ("mac80211: Handle special status codes in
SAE commit") we currently just pretend (towards the internal
state machine of authentication) that we didn't receive anything.
This has the undesirable consequence of retransmitting the prior
frame, which is not expected, because the timer is still armed.
If we just disarm the timer at that point, it would result in
the undesirable side effect of being in this state indefinitely
if userspace crashes, or so.
So to fix this, reset the timer and set a new auth_data->waiting
in order to have no more retransmissions, but to have the data
destroyed when the timer actually fires, which will only happen
if userspace didn't continue (i.e. crashed or abandoned it.)
Fixes: a4055e74a2ff ("mac80211: Don't destroy auth data in case of anti-clogging")
Reported-by: Jouni Malinen <j@w1.fi>
Link: https://lore.kernel.org/r/20220224103932.75964e1d7932.Ia487f91556f29daae734bf61f8181404642e1eec@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we're limiting bandwidth for some reason such as regulatory
restrictions, then advertise that limitation just like we do
for VHT today, so the AP is aware we cannot use the higher BW
it might be using.
Fixes: 41cbb0f5a295 ("mac80211: add support for HE")
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.20220202104617.70c8e3e7ee76.If317630de69ff1146bec7d47f5b83038695eb71d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Syzbot hit NULL deref in rhashtable_free_and_destroy(). The problem was
in mesh_paths and mpp_paths being NULL.
mesh_pathtbl_init() could fail in case of memory allocation failure, but
nobody cared, since ieee80211_mesh_init_sdata() returns void. It led to
leaving 2 pointers as NULL. Syzbot has found null deref on exit path,
but it could happen anywhere else, because code assumes these pointers are
valid.
Since all ieee80211_*_setup_sdata functions are void and do not fail,
let's embedd mesh_paths and mpp_paths into parent struct to avoid
adding error handling on higher levels and follow the pattern of others
setup_sdata functions
Fixes: 60854fd94573 ("mac80211: mesh: convert path table to rhashtable")
Reported-and-tested-by: syzbot+860268315ba86ea6b96b@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20211230195547.23977-1-paskripkin@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows drivers to provide a destination device + info for flow offload
Only supported in combination with 802.3 encap offload
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/20211112112223.1209-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Submitting AP probe/null during suspend can cause unexpected
disconnect on resume because of timeout waiting for ack status:
wlan0: Failed to send nullfunc to AP 11:22:33:44:55:66 after 500ms, disconnecting
This is especially the case when we enter suspend when a scan is
ongoing, indeed, scan is cancelled from __ieee80211_suspend, leading
to a corresponding (aborted) scan complete event, which in turn causes
the submission of an immediate monitor null frame (restart_sta_timer).
The corresponding packet or ack will not be processed before resuming,
causing a timeout & disconnect on resume.
Delay the AP probing when suspending/suspended.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1634805927-1113-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As the 802.11 spec evolves, we need to parse more and more
elements. This is causing the struct to grow, and we can no
longer get away with putting it on the stack.
Change the API to always dynamically allocate and return an
allocated pointer that must be kfree()d later.
As an alternative, I contemplated a scheme whereby we'd say
in the code which elements we needed, e.g.
DECLARE_ELEMENT_PARSER(elems,
SUPPORTED_CHANNELS,
CHANNEL_SWITCH,
EXT(KEY_DELIVERY));
ieee802_11_parse_elems(..., &elems, ...);
and while I think this is possible and will save us a lot
since most individual places only care about a small subset
of the elements, it ended up being a bit more work since a
lot of places do the parsing and then pass the struct to
other functions, sometimes with multiple levels.
Link: https://lore.kernel.org/r/20210920154009.26caff6b5998.I05ae58768e990e611aee8eca8abefd9d7bc15e05@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We currently pass the entire elements to the rx_bcn_presp()
method, but only need mesh_config. Additionally, we use the
length of the elements to calculate back the entire frame's
length, but that's confusing - just pass the length of the
frame instead.
Link: https://lore.kernel.org/r/20210920154009.a18ed3d2da6c.I1824b773a0fbae4453e1433c184678ca14e8df45@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Introduce TWT action frames parsing support to mac80211.
Currently just individual TWT agreement are support in AP mode.
Whenever the AP receives a TWT action frame from an associated client,
after performing sanity checks, it will notify the underlay driver with
requested parameters in order to check if they are supported and if there
is enough room for a new agreement. The driver is expected to set the
agreement result and report it to mac80211.
Drivers supporting this have two new callbacks:
- add_twt_setup (mandatory)
- twt_teardown_request (optional)
mac80211 will send an action frame reply according to the result
reported by the driver.
Tested-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/257512f2e22ba42b9f2624942a128dd8f141de4b.1629741512.git.lorenzo@kernel.org
[use le16p_replace_bits(), minor cleanups, use (void *) casts,
fix to use ieee80211_get_he_iftype_cap() correctly]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The color change announcement is very similar to how CSA works where
we have an IE that includes a counter. When the counter hits 0, the new
color is applied via an updated beacon.
This patch makes the CSA counter functionality reusable, rather than
implementing it again. This also allows for future reuse incase support
for other counter IEs gets added.
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/057c1e67b82bee561ea44ce6a45a8462d3da6995.1625247619.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Notify the driver about the 4-address mode change and also send a nulldata
packet to the AP to notify it about the change
Fixes: 1ff4e8f2dec8 ("mac80211: notify the driver when a sta uses 4-address mode")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210702050111.47546-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This switches the airtime scheduler in mac80211 to use a virtual
time-based scheduler instead of the round-robin scheduler used before.
This has a couple of advantages:
- No need to sync up the round-robin scheduler in firmware/hardware with
the round-robin airtime scheduler.
- If several stations are eligible for transmission we can schedule both
of them; no need to hard-block the scheduling rotation until the head
of the queue has used up its quantum.
- The check of whether a station is eligible for transmission becomes
simpler (in ieee80211_txq_may_transmit()).
The drawback is that scheduling becomes slightly more expensive, as we
need to maintain an rbtree of TXQs sorted by virtual time. This means
that ieee80211_register_airtime() becomes O(logN) in the number of
currently scheduled TXQs because it can change the order of the
scheduled stations. We mitigate this overhead by only resorting when a
station changes position in the tree, and hopefully N rarely grows too
big (it's only TXQs currently backlogged, not all associated stations),
so it shouldn't be too big of an issue.
To prevent divisions in the fast path, we maintain both station sums and
pre-computed reciprocals of the sums. This turns the fast-path operation
into a multiplication, with divisions only happening as the number of
active stations change (to re-compute the current sum of all active
station weights). To prevent this re-computation of the reciprocal from
happening too frequently, we use a time-based notion of station
activity, instead of updating the weight every time a station gets
scheduled or de-scheduled. As queues can oscillate between empty and
occupied quite frequently, this can significantly cut down on the number
of re-computations. It also has the added benefit of making the station
airtime calculation independent on whether the queue happened to have
drained at the time an airtime value was accounted.
Co-developed-by: Yibo Zhao <yiboz@codeaurora.org>
Signed-off-by: Yibo Zhao <yiboz@codeaurora.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20210623134755.235545-1-toke@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to differentiate these frames since the ones we
currently put on the skb_queue_tdls_chsw have already
been converted to ethernet format, but now that we've
got a single place to enqueue to the sdata->skb_queue
this isn't hard. Just differentiate based on protocol
and adjust the code to queue the SKBs appropriately.
Link: https://lore.kernel.org/r/20210517230754.17034990abef.I5342f2183c0d246b18d36c511eb3b6be298a6572@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As pointed out by Mathy Vanhoef, we implement the RX PN check
on fragmented frames incorrectly - we check against the last
received PN prior to the new frame, rather than to the one in
this frame itself.
Prior patches addressed the security issue here, but in order
to be able to reason better about the code, fix it to really
compare against the current frame's PN, not the last stored
one.
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210511200110.bfbc340ff071.Id0b690e581da7d03d76df90bb0e3fd55930bc8a0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Prior patches protected against fragmentation cache attacks
by coloring keys, but this shows that it can lead to issues
when multiple stations use the same sequence number. Add a
fragment cache to struct sta_info (in addition to the one in
the interface) to separate fragments for different stations
properly.
This then automatically clear most of the fragment cache when a
station disconnects (or reassociates) from an AP, or when client
interfaces disconnect from the network, etc.
On the way, also fix the comment there since this brings us in line
with the recommendation in 802.11-2016 ("An AP should support ...").
Additionally, remove a useless condition (since there's no problem
purging an already empty list).
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210511200110.fc35046b0d52.I1ef101e3784d13e8f6600d83de7ec9a3a45bcd52@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Simultaneously prevent mixed key attacks (CVE-2020-24587) and fragment
cache attacks (CVE-2020-24586). This is accomplished by assigning a
unique color to every key (per interface) and using this to track which
key was used to decrypt a fragment. When reassembling frames, it is
now checked whether all fragments were decrypted using the same key.
To assure that fragment cache attacks are also prevented, the ID that is
assigned to keys is unique even over (re)associations and (re)connects.
This means fragments separated by a (re)association or (re)connect will
not be reassembled. Because mac80211 now also prevents the reassembly of
mixed encrypted and plaintext fragments, all cache attacks are prevented.
Cc: stable@vger.kernel.org
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20210511200110.3f8290e59823.I622a67769ed39257327a362cfc09c812320eb979@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
drivers/net/can/dev.c
b552766c872f ("can: dev: prevent potential information leak in can_fill_info()")
3e77f70e7345 ("can: dev: move driver related infrastructure into separate subdir")
0a042c6ec991 ("can: dev: move netlink related code into seperate file")
Code move.
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
57ac4a31c483 ("net/mlx5e: Correctly handle changing the number of queues when the interface is down")
214baf22870c ("net/mlx5e: Support HTB offload")
Adjacent code changes
net/switchdev/switchdev.c
20776b465c0c ("net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP")
ffb68fc58e96 ("net: switchdev: remove the transaction structure from port object notifiers")
bae33f2b5afe ("net: switchdev: remove the transaction structure from port attributes")
Transaction parameter gets dropped otherwise keep the fix.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
syzbot reported a crash that happened when changing the interface
type around a lot, and while it might have been easy to fix just
the symptom there, a little deeper investigation found that really
the reason is that we allowed packets to be transmitted while in
the middle of changing the interface type.
Disallow TX by stopping the queues while changing the type.
Fixes: 34d4bc4d41d2 ("mac80211: support runtime interface type changes")
Reported-by: syzbot+d7a3b15976bf7de2238a@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20210122171115.b321f98f4d4f.I6997841933c17b093535c31d29355be3c0c39628@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Simplifies the code and prepares for a rework of scanning for flows on
overmemory drop.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20201218184718.93650-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When calculating the minimal channel width for channel context,
the current operation Rx channel width of a station was used and not
the overall channel width capability of the station, i.e., both for
Tx and Rx.
Fix ieee80211_get_sta_bw() to use the maximal channel width the
station is capable. While at it make the function static.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.4387040b99a0.I74bcf19238f75a5960c4098b10e355123d933281@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* 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>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
last_rate is initialized to zero by sta_info_alloc(), but
this indicates legacy bitrate for the last TX rate (and
invalid for the last RX rate). To avoid a warning when
decoding the last rate as legacy (before a data frame
has been sent), initialize them as S1G MCS.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20201005164522.18069-2-thomas@adapt-ip.com
[rename to ieee80211_s1g_sta_rate_init(), seems more appropriate]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The changes required for associating in S1G are:
- apply S1G BSS channel info before assoc
- mark all S1G STAs as QoS STAs
- include and parse AID request element
- handle new Association Response format
- don't fail assoc if supported rates element is missing
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-15-thomas@adapt-ip.com
[pass skb to ieee80211_add_aid_request_ie(), remove unused variable 'bss']
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
S1G beacons are 802.11 Extension Frames, so the fixed
header part differs from regular beacons.
Add a handler to process S1G beacons and abstract out the
fetching of BSSID and element start locations in the
beacon body handler.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-14-thomas@adapt-ip.com
[don't rename, small coding style cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
S1G allows listen interval up to 2^14 * 10000 beacon
intervals. In order to do this listen interval needs a
scaling factor applied to the lower 14 bits. Calculate
this and properly encode the listen interval for S1G STAs.
See IEEE802.11ah-2016 Table 9-44a for reference.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-10-thomas@adapt-ip.com
[move listen_int_usf into function using it]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit finds the correct offset for Information
Elements in S1G beacon frames so they can be reported in
scan results.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200922022818.15855-8-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
