Add more documentation for IEEE 802.11w/PMF configuration

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/defconfig

@@ -321,9 +321,7 @@ CONFIG_BACKEND=file
 # PeerKey handshake for Station to Station Link (IEEE 802.11e DLS)
 CONFIG_PEERKEY=y
 
-# IEEE 802.11w (management frame protection)
-# This version is an experimental implementation based on IEEE 802.11w/D1.0
-# draft and is subject to change since the standard has not yet been finalized.
+# IEEE 802.11w (management frame protection), also known as PMF
 # Driver support is also needed for IEEE 802.11w.
 #CONFIG_IEEE80211W=y
 

wpa_supplicant/wpa_supplicant.conf

@@ -411,6 +411,16 @@ fast_reauth=1
 # WPA-EAP-SHA256 = Like WPA-EAP but using stronger SHA256-based algorithms
 # If not set, this defaults to: WPA-PSK WPA-EAP
 #
+# ieee80211w: whether management frame protection is enabled
+# 0 = disabled (default)
+# 1 = optional
+# 2 = required
+# The most common configuration options for this based on the PMF (protected
+# management frames) certification program are:
+# PMF enabled: ieee80211w=1 and key_mgmt=WPA-EAP WPA-EAP-SHA256
+# PMF required: ieee80211w=2 and key_mgmt=WPA-EAP-SHA256
+# (and similarly for WPA-PSK and WPA-WPSK-SHA256 if WPA2-Personal is used)
+#
 # auth_alg: list of allowed IEEE 802.11 authentication algorithms
 # OPEN = Open System authentication (required for WPA/WPA2)
 # SHARED = Shared Key authentication (requires static WEP keys)