wifi: mac80211: fix a queue stall in certain cases of CSA

If we got an unprotected action frame with CSA and then we heard the
beacon with the CSA IE, we'll block the queues with the CSA reason
twice. Since this reason is refcounted, we won't wake up the queues
since we wake them up only once and the ref count will never reach 0.
This led to blocked queues that prevented any activity (even
disconnection wouldn't reset the queue state and the only way to recover
would be to reload the kernel module.

Fix this by not refcounting the CSA reason.
It becomes now pointless to maintain the csa_blocked_queues state.
Remove it.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fixes: 414e090b ("wifi: mac80211: restrict public action ECSA frame handling")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219447


Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241119173108.5ea90828c2cc.I4f89e58572fb71ae48e47a81e74595cac410fbac@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>