CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2020/12/08 08:52:04
Modified files:
sys/net80211 : ieee80211_output.c
Log message:
Fix 802.11 RSN capabilities announced to peers.
We were echoing back all RSN capabilities announced by our peer, even
for features which we don't support.
One such feature is Management Frame Protection (MFP). If we announce this
capability then the peer sends us encrypted management frames which won't
be processed. One symptom of this is that we fail to negotiate block ack
with APs that support MFP.
Only echo the RSN capabilities which we support, i.e. key replay counters.
Handle MFP and PBAR bits here as done elsewhere. Neither of these features
is enabled yet at run-time. As far as I can tell, the remaining RSN caps are
not supported by drivers (e.g. SPP A-MPDU) or won't be supported (outdated
WEP->TKIP transition support). The corresponding bits should always be clear.
Problem with 0 input block ack sessions found by sthen@ and robert@
Fix tested by sthen@, robert@, phessler@, and kmos@
ok phessler@ kmos@
