Commit Graph

891 Commits

Author SHA1 Message Date
Remi Pommarel
754fe848b3 Reapply "wifi: mac80211: Update skb's control block key in ieee80211_tx_dequeue()"
This reverts commit 0937cb5f34 ("Revert "wifi: mac80211: Update
skb's control block key in ieee80211_tx_dequeue()"").

This commit broke TX with 802.11 encapsulation HW offloading, now that
this is fixed, reapply it.

Fixes: bb42f2d13f ("mac80211: Move reorder-sensitive TX handlers to after TXQ dequeue")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://patch.msgid.link/66b8fc39fb0194fa06c9ca7eeb6ffe0118dcb3ec.1752765971.git.repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-07-18 14:29:30 +02:00
Remi Pommarel
4037c468d1 wifi: mac80211: Check 802.11 encaps offloading in ieee80211_tx_h_select_key()
With 802.11 encapsulation offloading, ieee80211_tx_h_select_key() is
called on 802.3 frames. In that case do not try to use skb data as
valid 802.11 headers.

Reported-by: Bert Karwatzki <spasswolf@web.de>
Closes: https://lore.kernel.org/linux-wireless/20250410215527.3001-1-spasswolf@web.de
Fixes: bb42f2d13f ("mac80211: Move reorder-sensitive TX handlers to after TXQ dequeue")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://patch.msgid.link/1af4b5b903a5fca5ebe67333d5854f93b2be5abe.1752765971.git.repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-07-18 14:29:20 +02:00
Alexander Wetzel
cb3bb3d88d wifi: mac80211: Don't call fq_flow_idx() for management frames
skb_get_hash() can only be used when the skb is linked to a netdev
device.

Signed-off-by: Alexander Wetzel <Alexander@wetzel-home.de>
Fixes: 73bc9e0af5 ("mac80211: don't apply flow control on management frames")
Link: https://patch.msgid.link/20250717162547.94582-3-Alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-07-18 14:24:48 +02:00
Alexander Wetzel
11e3e22fa5 wifi: mac80211: Do not schedule stopped TXQs
Ignore TXQs with the flag IEEE80211_TXQ_STOP when scheduling a queue.

The flag is only set after all fragments have been dequeued and won't
allow dequeueing other frames as long as the flag is set.

For drivers using ieee80211_txq_schedule_start() this prevents an
loop trying to push the queued frames while IEEE80211_TXQ_STOP is set:

After setting IEEE80211_TXQ_STOP the driver will call
ieee80211_return_txq(). Which calls __ieee80211_schedule_txq(), detects
that there sill are frames in the queue and immediately restarts the
stopped TXQ. Which can't dequeue any frame and thus starts over the loop.

Signed-off-by: Alexander Wetzel <Alexander@wetzel-home.de>
Fixes: ba8c3d6f16 ("mac80211: add an intermediate software queue implementation")
Link: https://patch.msgid.link/20250717162547.94582-2-Alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-07-18 14:24:39 +02:00
Lachlan Hodges
f8bf97ad19 wifi: mac80211: support returning the S1G short beacon skb
When short beaconing is enabled, check the value of the sb_count
to determine whether we are to send a long beacon or short beacon.
sb_count represents the number of short beacons until the next
long beacon, where if its value is 0 we are to send a long beacon.
The value is then reset to the long beacon period, which represents
the number of beacon intervals between each long beacon. The decrement
process follows the same cadence as the decrement of the DTIM count value.

Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20250717074205.312577-5-lachlan.hodges@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-07-18 14:14:44 +02:00
Lachlan Hodges
a505229624 wifi: mac80211: add support for S1G aggregation
Allow an S1G station to use aggregation.

Signed-off-by: Sophronia Koilpillai <sophronia.koilpillai@morsemicro.com>
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20250617080610.756048-5-lachlan.hodges@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-06-24 15:19:28 +02:00
Roopni Devanathan
b74947b4f6 wifi: cfg80211/mac80211: Add support to get radio index
Currently, per-radio attributes are set on per-phy basis, i.e., all the
radios present in a wiphy will take attributes values sent from user. But
each radio in a wiphy can get different values from userspace based on
its requirement.

To extend support to set per-radio attributes, add support to get radio
index from userspace. Add an NL attribute - NL80211_ATTR_WIPHY_RADIO_INDEX,
to get user specified radio index for which attributes should be changed.
Pass this to individual drivers, so that the drivers can use this radio
index to change per-radio attributes when necessary. Currently, per-radio
attributes identified are:
NL80211_ATTR_WIPHY_TX_POWER_LEVEL
NL80211_ATTR_WIPHY_ANTENNA_TX
NL80211_ATTR_WIPHY_ANTENNA_RX
NL80211_ATTR_WIPHY_RETRY_SHORT
NL80211_ATTR_WIPHY_RETRY_LONG
NL80211_ATTR_WIPHY_FRAG_THRESHOLD
NL80211_ATTR_WIPHY_RTS_THRESHOLD
NL80211_ATTR_WIPHY_COVERAGE_CLASS
NL80211_ATTR_TXQ_LIMIT
NL80211_ATTR_TXQ_MEMORY_LIMIT
NL80211_ATTR_TXQ_QUANTUM

By default, the radio index is set to -1. This means the attribute should
be treated as a global configuration. If the user has not specified any
index, then the radio index passed to individual drivers would be -1. This
would indicate that the attribute applies to all radios in that wiphy.

Signed-off-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Link: https://patch.msgid.link/20250615082312.619639-2-quic_rdevanat@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-06-24 15:19:27 +02:00
Johannes Berg
d19bac3d4e wifi: mac80211: don't WARN for late channel/color switch
There's really no value in the WARN stack trace etc., the reason
for this happening isn't directly related to the calling function
anyway. Also, syzbot has been observing it constantly, and there's
no way we can resolve it there - those systems are just slow.

Instead print an error message (once) and add a comment about what
really causes this message.

Reported-by: syzbot+468656785707b0e995df@syzkaller.appspotmail.com
Reported-by: syzbot+18c783c5cf6a781e3e2c@syzkaller.appspotmail.com
Reported-by: syzbot+d5924d5cffddfccab68e@syzkaller.appspotmail.com
Reported-by: syzbot+7d73d99525d1ff7752ef@syzkaller.appspotmail.com
Reported-by: syzbot+8e6e002c74d1927edaf5@syzkaller.appspotmail.com
Reported-by: syzbot+97254a3b10c541879a65@syzkaller.appspotmail.com
Reported-by: syzbot+dfd1fd46a1960ad9c6ec@syzkaller.appspotmail.com
Reported-by: syzbot+85e0b8d12d9ca877d806@syzkaller.appspotmail.com
Link: https://patch.msgid.link/20250617104902.146e10919be1.I85f352ca4a2dce6f556e5ff45ceaa5f3769cb5ce@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-06-17 14:30:06 +02:00
Bert Karwatzki
d7500fbfb1 wifi: check if socket flags are valid
Checking the SOCK_WIFI_STATUS flag bit in sk_flags may give wrong results
since sk_flags are part of a union and the union is used otherwise. Add
sk_requests_wifi_status() which checks if sk is non-NULL, sk is a full
socket (so flags are valid) and checks the flag bit.

Fixes: 76a853f86c ("wifi: free SKBTX_WIFI_STATUS skb tx_flags flag")
Suggested-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Bert Karwatzki <spasswolf@web.de>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Link: https://patch.msgid.link/20250520223430.6875-1-spasswolf@web.de
[edit commit message, fix indentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-05-21 09:26:22 +02:00
Muna Sinada
1a4a6a2255 wifi: mac80211: VLAN traffic in multicast path
Currently for MLO, sending out multicast frames on each link is handled by
mac80211 only when IEEE80211_HW_MLO_MCAST_MULTI_LINK_TX flag is not set.

Dynamic VLAN multicast traffic utilizes software encryption.
Due to this, mac80211 should handle transmitting multicast frames on
all links for multicast VLAN traffic.

Signed-off-by: Muna Sinada <muna.sinada@oss.qualcomm.com>
Link: https://patch.msgid.link/20250325213125.1509362-4-muna.sinada@oss.qualcomm.com
[remove unnecessary parentheses]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-04-23 16:59:02 +02:00
Toke Høiland-Jørgensen
4876376988 Revert "mac80211: Dynamically set CoDel parameters per station"
This reverts commit 484a54c2e5. The CoDel
parameter change essentially disables CoDel on slow stations, with some
questionable assumptions, as Dave pointed out in [0]. Quoting from
there:

  But here are my pithy comments as to why this part of mac80211 is so
  wrong...

   static void sta_update_codel_params(struct sta_info *sta, u32 thr)
   {
  -       if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) {

  1) sta->local->num_sta is the number of associated, rather than
  active, stations. "Active" stations in the last 50ms or so, might have
  been a better thing to use, but as most people have far more than that
  associated, we end up with really lousy codel parameters, all the
  time. Mistake numero uno!

  2) The STA_SLOW_THRESHOLD was completely arbitrary in 2016.

  -               sta->cparams.target = MS2TIME(50);

  This, by itself, was probably not too bad. 30ms might have been
  better, at the time, when we were battling powersave etc, but 20ms was
  enough, really, to cover most scenarios, even where we had low rate
  2Ghz multicast to cope with. Even then, codel has a hard time finding
  any sane drop rate at all, with a target this high.

  -               sta->cparams.interval = MS2TIME(300);

  But this was horrible, a total mistake, that is leading to codel being
  completely ineffective in almost any scenario on clients or APS.
  100ms, even 80ms, here, would be vastly better than this insanity. I'm
  seeing 5+seconds of delay accumulated in a bunch of otherwise happily
  fq-ing APs....

  100ms of observed jitter during a flow is enough. Certainly (in 2016)
  there were interactions with powersave that I did not understand, and
  still don't, but if you are transmitting in the first place, powersave
  shouldn't be a problemmmm.....

  -               sta->cparams.ecn = false;

  At the time we were pretty nervous about ecn, I'm kind of sanguine
  about it now, and reliably indicating ecn seems better than turning it
  off for any reason.

  [...]

  In production, on p2p wireless, I've had 8ms and 80ms for target and
  interval for years now, and it works great.

I think Dave's arguments above are basically sound on the face of it,
and various experimentation with tighter CoDel parameters in the OpenWrt
community have show promising results[1]. So I don't think there's any
reason to keep this parameter fiddling; hence this revert.

[0] https://lore.kernel.org/linux-wireless/CAA93jw6NJ2cmLmMauz0xAgC2MGbBq6n0ZiZzAdkK0u4b+O2yXg@mail.gmail.com/
[1] https://forum.openwrt.org/t/reducing-multiplexing-latencies-still-further-in-wifi/133605/130

Suggested-By: Dave Taht <dave.taht@gmail.com>
In-memory-of: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20250403183930.197716-1-toke@toke.dk
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-04-23 15:22:11 +02:00
Johannes Berg
996c15bd30 wifi: cfg80211/mac80211: remove more 5/10 MHz code
We still have ieee80211_chandef_rate_flags() and all that,
but all the users seem pretty much broken (deflink, etc.)
Remove all the code. It's been two years since last anyone
even vaguely entertained the notion of looking at this and
fixing it.

Link: https://patch.msgid.link/20250329221419.c31da7ae8c84.I1a3a4b6008134d66ca75a5bdfc004f4594da8145@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-04-23 15:21:32 +02:00
Johannes Berg
76a853f86c wifi: free SKBTX_WIFI_STATUS skb tx_flags flag
Jason mentioned at netdevconf that we've run out of tx_flags in
the skb_shinfo(). Gain one bit back by removing the wifi bit.

We can do that because the only userspace application for it
(hostapd) doesn't change the setting on the socket, it just
uses different sockets, and normally doesn't even use this any
more, sending the frames over nl80211 instead.

Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Link: https://patch.msgid.link/20250313134942.52ff54a140ec.If390bbdc46904cf451256ba989d7a056c457af6e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-04-23 15:09:25 +02:00
Johannes Berg
3979c8e620 wifi: mac80211: aggregation: remove deflink accesses for MLO
If a station has connected with MLO (as indicated by valid_links
being non-zero, even if that may have just a single bit set), it
necessarily supports EHT/aggregation, so we don't need to check
the deflink for those cases.

Add conditions so we can support removing the link it/we used to
associate on.

Note that we still use the statistics in the deflink, but that's
a whole different story we will need to address separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250205110958.daf2a9e367f2.Id2c2dfbbe7451cc900ed88c5a81b33c55b4ab1cf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-11 11:59:08 +01:00
Alexander Wetzel
286e696770 wifi: mac80211: Drop cooked monitor support
Hostapd switched from cooked monitor interfaces to nl80211 Dec 2011.
Drop support for the outdated cooked monitor interfaces and fix
creating the virtual monitor interfaces in the following cases:

 1) We have one non-monitor and one monitor interface with
    %MONITOR_FLAG_ACTIVE enabled and then delete the non-monitor
    interface.

 2) We only have monitor interfaces enabled on resume while at least one
    has %MONITOR_FLAG_ACTIVE set.

Signed-off-by: Alexander Wetzel <Alexander@wetzel-home.de>
Link: https://patch.msgid.link/20250204111352.7004-2-Alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-11 11:58:17 +01:00
Felix Fietkau
9d40f7e327 wifi: mac80211: add flag to opt out of virtual monitor support
This is useful for multi-radio devices that are capable of monitoring on
multiple channels simultanenously. When this flag is set, each monitor
interface is passed to the driver individually and can have a configured
channel.
The vif mac address for non-active monitor interfaces is cleared, in order
to allow the driver to tell them apart from active ones.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/3c55505ee0cf0a5f141fbcb30d1e8be8d9f40373.1728462320.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:45:43 +02:00
Johannes Berg
a0efa2f362 Merge net-next/main to resolve conflicts
The wireless-next tree was based on something older, and there
are now conflicts between -rc2 and work here. Merge net-next,
which has enough of -rc2 for the conflicts to happen, resolving
them in the process.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-09 08:59:22 +02:00
Dmitry Antipov
4b482281ee wifi: mac80211, cfg80211: miscellaneous spelling fixes
Correct spelling here and there as suggested by codespell.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20240913084919.118862-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:52:09 +02:00
Al Viro
5f60d5f6bb move asm/unaligned.h to linux/unaligned.h
asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2024-10-02 17:23:23 -04:00
Jakub Kicinski
43b7724487 wireless-next patches for v6.12
mwifiex has recently started to see active development which is good
 news. rtw89 is also under active development and got several new
 features. Otherwise not really anything out of ordinary.
 
 We have one conflict in ath12k but that's easy to fix:
 
 https://lore.kernel.org/all/20240808104348.6846e064@canb.auug.org.au/
 
 Major changes:
 
 mwifiex
 
 * support for up to ten Authentication and Key Management (AKM) suites
 
 * host MAC Sublayer Management Entity (MLME) client and AP mode support
 
 * WPA-PSK-SHA256 AKM suite support
 
 rtw88
 
 * improve USB performance by aggregation
 
 rtw89
 
 * Wi-Fi 6 chip RTL8852BE-VT support
 
 * WoWLAN net-detect support
 
 * hardware encryption in unicast management frames support
 
 * hardware rfkill support
 
 ath12k
 
 * DebugFS support for transmit DE stats
 
 * Make ASPM support hardware-dependent
 
 iwlwifi
 
 * channel puncturing for US/CAN from UEFI
 
 * bump FW API to 93 for BZ/SC devices
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Merge tag 'wireless-next-2024-09-04' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
pull-request: wireless-next-2024-09-04

here's a pull request to net-next tree, more info below. Please let me know if
there are any problems.
====================

Conflicts:

drivers/net/wireless/ath/ath12k/hw.c
  38055789d1 ("wifi: ath12k: use 128 bytes aligned iova in transmit path for WCN7850")
  8be12629b4 ("wifi: ath12k: restore ASPM for supported hardwares only")
https://lore.kernel.org/87msldyj97.fsf@kernel.org

Link: https://patch.msgid.link/20240904153205.64C11C4CEC2@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-09-04 17:20:14 -07:00
Ping-Ke Shih
e7a7ef9a07 wifi: mac80211: don't use rate mask for offchannel TX either
Like the commit ab9177d83c ("wifi: mac80211: don't use rate mask for
scanning"), ignore incorrect settings to avoid no supported rate warning
reported by syzbot.

The syzbot did bisect and found cause is commit 9df66d5b9f ("cfg80211:
fix default HE tx bitrate mask in 2G band"), which however corrects
bitmask of HE MCS and recognizes correctly settings of empty legacy rate
plus HE MCS rate instead of returning -EINVAL.

As suggestions [1], follow the change of SCAN TX to consider this case of
offchannel TX as well.

[1] https://lore.kernel.org/linux-wireless/6ab2dc9c3afe753ca6fdcdd1421e7a1f47e87b84.camel@sipsolutions.net/T/#m2ac2a6d2be06a37c9c47a3d8a44b4f647ed4f024

Reported-by: syzbot+8dd98a9e98ee28dc484a@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-wireless/000000000000fdef8706191a3f7b@google.com/
Fixes: 9df66d5b9f ("cfg80211: fix default HE tx bitrate mask in 2G band")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20240729074816.20323-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-27 10:13:23 +02:00
Dmitry Antipov
786c5be9ac wifi: mac80211: free skb on error path in ieee80211_beacon_get_ap()
In 'ieee80211_beacon_get_ap()', free allocated skb in case of error
returned by 'ieee80211_beacon_protect()'. Compile tested only.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20240805142035.227847-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-26 17:45:45 +02:00
Johannes Berg
8f4fa08762 wifi: mac80211: use monitor sdata with driver only if desired
In commit 0d9c2beed1 ("wifi: mac80211: fix monitor channel
with chanctx emulation") I changed mac80211 to always have an
internal monitor_sdata to have something to have the chanctx
bound to.

However, if the driver didn't also have the WANT_MONITOR flag
this would cause mac80211 to allocate it without telling the
driver (which was intentional) but also use it for later APIs
to the driver without it ever having known about it which was
_not_ intentional.

Check through the code and only use the monitor_sdata in the
relevant places (TX, MU-MIMO follow settings, TX power, and
interface iteration) when the WANT_MONITOR flag is set.

Cc: stable@vger.kernel.org
Fixes: 0d9c2beed1 ("wifi: mac80211: fix monitor channel with chanctx emulation")
Reported-by: ZeroBeat <ZeroBeat@gmx.de>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219086
Tested-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20240725184836.25d334157a8e.I02574086da2c5cf0e18264ce5807db6f14ffd9c0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-26 12:30:49 +02:00
Johannes Berg
d42fcaece0 wifi: mac80211: add ieee80211_tdls_sta_link_id()
We've open-coded this twice and will need it again,
add ieee80211_tdls_sta_link_id() to get the one link
ID for a TDLS STA.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240612143707.9f8141ae1725.I343822bbba0ae08dedb2f54a0ce87f2ae5ebeb2b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-26 10:22:04 +02:00
Jakub Kicinski
2bd87951de Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

Conflicts:

drivers/net/ethernet/ti/icssg/icssg_prueth.c

net/mac80211/chan.c
  89884459a0 ("wifi: mac80211: fix idle calculation with multi-link")
  87f5500285 ("wifi: mac80211: simplify ieee80211_assign_link_chanctx()")
https://lore.kernel.org/all/20240422105623.7b1fbda2@canb.auug.org.au/

net/unix/garbage.c
  1971d13ffa ("af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc().")
  4090fa373f ("af_unix: Replace garbage collection algorithm.")

drivers/net/ethernet/ti/icssg/icssg_prueth.c
drivers/net/ethernet/ti/icssg/icssg_common.c
  4dcd0e83ea ("net: ti: icssg-prueth: Fix signedness bug in prueth_init_rx_chns()")
  e2dc7bfd67 ("net: ti: icssg-prueth: Move common functions into a separate file")

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-04-25 12:41:37 -07:00
Johannes Berg
ab9177d83c wifi: mac80211: don't use rate mask for scanning
The rate mask is intended for use during operation, and
can be set to only have masks for the currently active
band. As such, it cannot be used for scanning which can
be on other bands as well.

Simply ignore the rate masks during scanning to avoid
warnings from incorrect settings.

Reported-by: syzbot+fdc5123366fb9c3fdc6d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=fdc5123366fb9c3fdc6d
Co-developed-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Tested-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://msgid.link/20240326220854.9594cbb418ca.I7f86c0ba1f98cf7e27c2bacf6c2d417200ecea5c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-08 20:11:34 +02:00
Johannes Berg
f40db02e8f wifi: mac80211: use kvcalloc() for codel vars
This is a big array, but it's only used by software and
need not be contiguous in memory. Use kvcalloc() since
it's so big (order 5 allocation).

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240325150509.9195643699e4.I1b94b17abc809491080d6312f31ce6b5decdd446@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-03-25 15:40:03 +01:00
Aditya Kumar Singh
6030b3a469 wifi: mac80211: check beacon countdown is complete on per link basis
Currently, function to check if beacon countdown is complete uses deflink
to fetch the beacon and check the counter. However, with MLO, there is
a need to check the counter for the beacon in a particular link.

Add support to use link_id in order to fetch the beacon from a particular
link data.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240216144621.514385-2-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-21 15:19:03 +01:00
Johannes Berg
cd882e2fb2 Merge wireless into wireless-next
There's a conflict already and some upcoming changes
also depend on changes in wireless for being conflict-
free, so pull wireless in to make all that easier.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-15 09:56:42 +01:00
Johannes Berg
49c17da387 wifi: mac80211: drop injection on disabled-chan monitor
If the driver uses the new IEEE80211_CHAN_CAN_MONITOR, we
may monitor on channels that are, e.g. via regulatory,
otherwise considered disabled. However, we really shouldn't
transmit on them, so prevent that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.9c03dcf67dbe.Ib86a851c274c440908c663f6dd774b79bfc3965d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:48 +01:00
Aditya Kumar Singh
480e7048aa wifi: mac80211: update beacon counters per link basis
Currently, function to update beacon counter uses deflink to fetch
the beacon and then update the counter. However, with MLO, there is
a need to update the counter for the beacon in a particular link.

Add support to use link_id in order to fetch the beacon from a particular
link data during beacon update counter.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240130140918.1172387-3-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08 15:00:45 +01:00
Johannes Berg
91cdcbbcde wifi: mac80211: clarify vif handling in TX dequeue
The vif pointer at least looks like it can actually be NULL
in some cases such as the monitor-mode vif, causing static
checkers to complain with the immediate derefence. In these
cases the sta pointer will also be NULL, but clarify it in
the code anyway.

Link: https://msgid.link/20240131164910.60066625a239.Idfb6a5a9876f9f631eae760055e1c4018259a971@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08 15:00:44 +01:00
Johannes Berg
c98d8836b8 wifi: mac80211: reload info pointer in ieee80211_tx_dequeue()
This pointer can change here since the SKB can change, so we
actually later open-coded IEEE80211_SKB_CB() again. Reload
the pointer where needed, so the monitor-mode case using it
gets fixed, and then use info-> later as well.

Cc: stable@vger.kernel.org
Fixes: 5316821590 ("mac80211: fix VLAN handling with TXQs")
Link: https://msgid.link/20240131164910.b54c28d583bc.I29450cec84ea6773cff5d9c16ff92b836c331471@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08 13:16:22 +01:00
Johannes Berg
0a44dfc070 wifi: mac80211: simplify non-chanctx drivers
There are still surprisingly many non-chanctx drivers, but in
mac80211 that code is a bit awkward. Simplify this by having
those drivers assign 'emulated' ops, so that the mac80211 code
can be more unified between non-chanctx/chanctx drivers. This
cuts the number of places caring about it by about 15, which
are scattered across - now they're fewer and no longer in the
channel context handling.

Link: https://msgid.link/20240129194108.6d0ead50f5cf.I60d093b2fc81ca1853925a4d0ac3a2337d5baa5b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08 12:58:32 +01:00
Johannes Berg
61f0261131 wifi: mac80211: clean up band switch in duration
Most devices now do duration calculations, so we don't hit
this code at all any more. Clearly the approach of warning
at compile time here when new bands are added didn't work,
the new bands were just added with "TODO". Clean it up, it
won't matter for new bands since they'll just not have any
need to calculate durations in software.

While at it, also clean up and unify the code a bit.

Link: https://msgid.link/20240129194108.70a97bd69265.Icdd8b0ac60a382244466510090eb0f5868151f39@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-08 12:58:23 +01:00
Johannes Berg
9480adfe4e wifi: mac80211: fix RCU use in TDLS fast-xmit
This looks up the link under RCU protection, but isn't
guaranteed to actually have protection. Fix that.

Fixes: 8cc07265b6 ("wifi: mac80211: handle TDLS data frames with MLO")
Link: https://msgid.link/20240129155348.8a9c0b1e1d89.I553f96ce953bb41b0b877d592056164dec20d01c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-02 13:09:19 +01:00
Jakub Kicinski
1347775dea wireless fixes for v6.8-rc2
The most visible fix here is the ath11k crash fix which was introduced
 in v6.7. We also have a fix for iwlwifi memory corruption and few
 smaller fixes in the stack.
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Merge tag 'wireless-2024-01-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

Kalle Valo says:

====================
wireless fixes for v6.8-rc2

The most visible fix here is the ath11k crash fix which was introduced
in v6.7. We also have a fix for iwlwifi memory corruption and few
smaller fixes in the stack.

* tag 'wireless-2024-01-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: mac80211: fix race condition on enabling fast-xmit
  wifi: iwlwifi: fix a memory corruption
  wifi: mac80211: fix potential sta-link leak
  wifi: cfg80211/mac80211: remove dependency on non-existing option
  wifi: cfg80211: fix missing interfaces when dumping
  wifi: ath11k: rely on mac80211 debugfs handling for vif
  wifi: p54: fix GCC format truncation warning with wiphy->fw_version
====================

Link: https://lore.kernel.org/r/20240122153434.E0254C433C7@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-23 08:38:13 -08:00
Felix Fietkau
bcbc84af11 wifi: mac80211: fix race condition on enabling fast-xmit
fast-xmit must only be enabled after the sta has been uploaded to the driver,
otherwise it could end up passing the not-yet-uploaded sta via drv_tx calls
to the driver, leading to potential crashes because of uninitialized drv_priv
data.
Add a missing sta->uploaded check and re-check fast xmit after inserting a sta.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://msgid.link/20240104181059.84032-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-01-18 14:51:15 +01:00
Dmitry Antipov
ea855f0b38 wifi: mac80211: cleanup airtime arithmetic with ieee80211_sta_keep_active()
Prefer native jiffies-wide 'unsigned long' for the 'last_active' field of
'struct airtime_info' and introduce 'ieee80211_sta_keep_active()' for airtime
check in 'ieee80211_txq_keep_active()' and 'ieee80211_sta_register_airtime()'.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://msgid.link/20231206060935.612241-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-12-12 10:36:59 +01:00
Johannes Berg
7d6904bf26 Merge wireless into wireless-next
Resolve several conflicts, mostly between changes/fixes in
wireless and the locking rework in wireless-next. One of
the conflicts actually shows a bug in wireless that we'll
want to fix separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
2023-10-06 17:08:47 +03:00
Wen Gong
61304336c6 wifi: mac80211: allow transmitting EAPOL frames with tainted key
Lower layer device driver stop/wake TX by calling ieee80211_stop_queue()/
ieee80211_wake_queue() while hw scan. Sometimes hw scan and PTK rekey are
running in parallel, when M4 sent from wpa_supplicant arrive while the TX
queue is stopped, then the M4 will pending send, and then new key install
from wpa_supplicant. After TX queue wake up by lower layer device driver,
the M4 will be dropped by below call stack.

When key install started, the current key flag is set KEY_FLAG_TAINTED in
ieee80211_pairwise_rekey(), and then mac80211 wait key install complete by
lower layer device driver. Meanwhile ieee80211_tx_h_select_key() will return
TX_DROP for the M4 in step 12 below, and then ieee80211_free_txskb() called
by ieee80211_tx_dequeue(), so the M4 will not send and free, then the rekey
process failed becaue AP not receive M4. Please see details in steps below.

There are a interval between KEY_FLAG_TAINTED set for current key flag and
install key complete by lower layer device driver, the KEY_FLAG_TAINTED is
set in this interval, all packet including M4 will be dropped in this
interval, the interval is step 8~13 as below.

issue steps:
      TX thread                 install key thread
1.   stop_queue                      -idle-
2.   sending M4                      -idle-
3.   M4 pending                      -idle-
4.     -idle-                  starting install key from wpa_supplicant
5.     -idle-                  =>ieee80211_key_replace()
6.     -idle-                  =>ieee80211_pairwise_rekey() and set
                                 currently key->flags |= KEY_FLAG_TAINTED
7.     -idle-                  =>ieee80211_key_enable_hw_accel()
8.     -idle-                  =>drv_set_key() and waiting key install
                                 complete from lower layer device driver
9.   wake_queue                     -waiting state-
10.  re-sending M4                  -waiting state-
11.  =>ieee80211_tx_h_select_key()  -waiting state-
12.  drop M4 by KEY_FLAG_TAINTED    -waiting state-
13.    -idle-                   install key complete with success/fail
                                  success: clear flag KEY_FLAG_TAINTED
                                  fail: start disconnect

Hence add check in step 11 above to allow the EAPOL send out in the
interval. If lower layer device driver use the old key/cipher to encrypt
the M4, then AP received/decrypt M4 correctly, after M4 send out, lower
layer device driver install the new key/cipher to hardware and return
success.

If lower layer device driver use new key/cipher to send the M4, then AP
will/should drop the M4, then it is same result with this issue, AP will/
should kick out station as well as this issue.

issue log:
kworker/u16:4-5238  [000]  6456.108926: stop_queue:           phy1 queue:0, reason:0
wpa_supplicant-961  [003]  6456.119737: rdev_tx_control_port: wiphy_name=phy1 name=wlan0 ifindex=6 dest=ARRAY[9e, 05, 31, 20, 9b, d0] proto=36488 unencrypted=0
wpa_supplicant-961  [003]  6456.119839: rdev_return_int_cookie: phy1, returned 0, cookie: 504
wpa_supplicant-961  [003]  6456.120287: rdev_add_key:         phy1, netdev:wlan0(6), key_index: 0, mode: 0, pairwise: true, mac addr: 9e:05:31:20:9b:d0
wpa_supplicant-961  [003]  6456.120453: drv_set_key:          phy1 vif:wlan0(2) sta:9e:05:31:20:9b:d0 cipher:0xfac04, flags=0x9, keyidx=0, hw_key_idx=0
kworker/u16:9-3829  [001]  6456.168240: wake_queue:           phy1 queue:0, reason:0
kworker/u16:9-3829  [001]  6456.168255: drv_wake_tx_queue:    phy1 vif:wlan0(2) sta:9e:05:31:20:9b:d0 ac:0 tid:7
kworker/u16:9-3829  [001]  6456.168305: cfg80211_control_port_tx_status: wdev(1), cookie: 504, ack: false
wpa_supplicant-961  [003]  6459.167982: drv_return_int:       phy1 - -110

issue call stack:
nl80211_frame_tx_status+0x230/0x340 [cfg80211]
cfg80211_control_port_tx_status+0x1c/0x28 [cfg80211]
ieee80211_report_used_skb+0x374/0x3e8 [mac80211]
ieee80211_free_txskb+0x24/0x40 [mac80211]
ieee80211_tx_dequeue+0x644/0x954 [mac80211]
ath10k_mac_tx_push_txq+0xac/0x238 [ath10k_core]
ath10k_mac_op_wake_tx_queue+0xac/0xe0 [ath10k_core]
drv_wake_tx_queue+0x80/0x168 [mac80211]
__ieee80211_wake_txqs+0xe8/0x1c8 [mac80211]
_ieee80211_wake_txqs+0xb4/0x120 [mac80211]
ieee80211_wake_txqs+0x48/0x80 [mac80211]
tasklet_action_common+0xa8/0x254
tasklet_action+0x2c/0x38
__do_softirq+0xdc/0x384

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Link: https://lore.kernel.org/r/20230801064751.25803-1-quic_wgong@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-25 09:32:01 +02:00
Johannes Berg
ef246a1480 wifi: mac80211: support antenna control in injection
Support antenna control for injection by parsing the antenna
radiotap field (which may be presented multiple times) and
telling the driver about the resulting antenna bitmap. Of
course there's no guarantee the driver will actually honour
this, just like any other injection control.

If misconfigured, i.e. the injected HT/VHT MCS needs more
chains than antennas are configured, the bitmap is reset to
zero, indicating no selection.

For now this is only set up for two anntenas so we keep more
free bits, but that can be trivially extended if any driver
implements support for it that can deal with hardware with
more antennas.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230920211508.f71001aa4da9.I00ccb762a806ea62bc3d728fa3a0d29f4f285eeb@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-25 09:12:34 +02:00
Johannes Berg
cef7104720 wifi: mac80211: describe return values in kernel-doc
Add descriptions for two return values for two functions
that are missing them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230920211508.79307c341723.Ibae386f0354f2e215d4955752ac378acc2466b51@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-25 09:12:33 +02:00
Johannes Berg
2400dfe23f wifi: mac80211: remove shifted rate support
We really cannot even get into this as we can't have
a BSS with a 5/10 MHz (scan) width, and therefore all
the code handling shifted rates cannot happen. Remove
it all, since it's broken anyway, at least with MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-13 11:22:16 +02:00
Johannes Berg
0cd8080e46 wifi: mac80211: remove local->mtx
We now hold the wiphy mutex everywhere that we use or
needed the local->mtx, so we don't need this mutex any
more. Remove it.

Most of this change was done automatically with spatch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-11 11:27:22 +02:00
Johannes Berg
4d3acf4311 wifi: mac80211: remove sta_mtx
We now hold the wiphy mutex everywhere that we use or
needed the sta_mtx, so we don't need this mutex any
more. Remove it.

Most of this change was done automatically with spatch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-11 11:27:22 +02:00
Johannes Berg
9fa659f9f4 wifi: mac80211: move dynamic PS to wiphy work
Along with everything else, move the dynamic PS work
to be a wiphy work, to simplify locking later.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-11 11:27:20 +02:00
Johannes Berg
f498f6ab7a wifi: mac80211: rework ack_frame_id handling a bit
Take one more free bit to indicate it's IDR vs. internal
usage, to be able to carve out some bits here for other
internal usage, other than IDR handling with a full ACK
SKB, that is.

Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-11 11:27:18 +02:00
Johannes Berg
0499bead73 wifi: mac80211: tx: clarify conditions in if statement
This really just reformats the statement, but makes it
more readable.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-11 11:27:18 +02:00
Jakub Kicinski
e6988447c1 Notable changes this time around:
MAINTAINERS
  * add missing driver git trees
 
 ath11k
  * factory test mode support
 
 iwlwifi
  * config rework to drop test devices and
    split the different families
  * major update for new firmware and MLO
 
 stack
  * initial multi-link reconfiguration suppor
  * multi-BSSID and MLO improvements
 
 other
  * fix the last few W=1 warnings from GCC 13
  * merged wireless tree to avoid conflicts
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Merge tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
Notable changes this time around:

MAINTAINERS
 - add missing driver git trees

ath11k
 - factory test mode support

iwlwifi
 - config rework to drop test devices and
   split the different families
 - major update for new firmware and MLO

stack
 - initial multi-link reconfiguration suppor
 - multi-BSSID and MLO improvements

other
 - fix the last few W=1 warnings from GCC 13
 - merged wireless tree to avoid conflicts

* tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (245 commits)
  wifi: ieee80211: fix erroneous NSTR bitmap size checks
  wifi: rtlwifi: cleanup USB interface
  wifi: rtlwifi: simplify LED management
  wifi: ath10k: improve structure padding
  wifi: ath9k: convert msecs to jiffies where needed
  wifi: iwlwifi: mvm: Add support for IGTK in D3 resume flow
  wifi: iwlwifi: mvm: update two most recent GTKs on D3 resume flow
  wifi: iwlwifi: mvm: Refactor security key update after D3
  wifi: mac80211: mark keys as uploaded when added by the driver
  wifi: iwlwifi: remove support of A0 version of FM RF
  wifi: iwlwifi: cfg: clean up Bz module firmware lines
  wifi: iwlwifi: pcie: add device id 51F1 for killer 1675
  wifi: iwlwifi: bump FW API to 83 for AX/BZ/SC devices
  wifi: iwlwifi: cfg: remove trailing dash from FW_PRE constants
  wifi: iwlwifi: also unify Ma device configurations
  wifi: iwlwifi: also unify Sc device configurations
  wifi: iwlwifi: unify Bz/Gl device configurations
  wifi: iwlwifi: pcie: also drop jacket from info macro
  wifi: iwlwifi: remove support for *nJ devices
  wifi: iwlwifi: don't load old firmware for 22000
  ...
====================

Link: https://lore.kernel.org/r/20230622185602.147650-2-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-22 20:09:13 -07:00