linux/net/wireless
Johannes Berg 177fbbcb4e wifi: cfg80211: detect stuck ECSA element in probe resp
We recently added some validation that we don't try to
connect to an AP that is currently in a channel switch
process, since that might want the channel to be quiet
or we might not be able to connect in time to hear the
switching in a beacon. This was in commit c09c4f3199
("wifi: mac80211: don't connect to an AP while it's in
a CSA process").

However, we promptly got a report that this caused new
connection failures, and it turns out that the AP that
we now cannot connect to is permanently advertising an
extended channel switch announcement, even with quiet.
The AP in question was an Asus RT-AC53, with firmware
3.0.0.4.380_10760-g21a5898.

As a first step, attempt to detect that we're dealing
with such a situation, so mac80211 can use this later.

Reported-by: coldolt <andypalmadi@gmail.com>
Closes: https://lore.kernel.org/linux-wireless/CAJvGw+DQhBk_mHXeu6RTOds5iramMW2FbMB01VbKRA4YbHHDTA@mail.gmail.com/
Fixes: c09c4f3199 ("wifi: mac80211: don't connect to an AP while it's in a CSA process")
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240129131413.246972c8775e.Ibf834d7f52f9951a353b6872383da710a7358338@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-02 13:08:58 +01:00
..
certs
tests wifi: cfg80211: tests: add some scanning related tests 2024-01-03 15:35:22 +01:00
.gitignore
Kconfig wifi: cfg80211/mac80211: remove dependency on non-existing option 2024-01-18 14:50:01 +01:00
Makefile
ap.c
chan.c
core.c wifi: cfg80211: fix wiphy delayed work queueing 2024-01-26 10:43:32 +01:00
core.h wifi: cfg80211: tests: add some scanning related tests 2024-01-03 15:35:22 +01:00
debugfs.c
debugfs.h
ethtool.c
ibss.c
lib80211.c
lib80211_crypt_ccmp.c
lib80211_crypt_tkip.c
lib80211_crypt_wep.c
mesh.c
mlme.c
nl80211.c wireless fixes for v6.8-rc2 2024-01-23 08:38:13 -08:00
nl80211.h
ocb.c
of.c
pmsr.c
radiotap.c
rdev-ops.h
reg.c
reg.h
scan.c wifi: cfg80211: detect stuck ECSA element in probe resp 2024-02-02 13:08:58 +01:00
sme.c
sysfs.c
sysfs.h
trace.c
trace.h
util.c wifi: cfg80211: Update the default DSCP-to-UP mapping 2024-01-03 15:35:26 +01:00
wext-compat.c
wext-compat.h
wext-core.c
wext-priv.c
wext-proc.c
wext-sme.c
wext-spy.c