mac80211: 802.11w - Add driver capability flag for MFP
This allows user space to determine whether a driver supports MFP and
behave properly without having to ask user to configure this in
MFP-optional mode.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 00a50a3..9bca2ab 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -865,6 +865,9 @@
*
* @IEEE80211_HW_SUPPORTS_DYNAMIC_PS:
* Hardware has support for dynamic PS.
+ *
+ * @IEEE80211_HW_MFP_CAPABLE:
+ * Hardware supports management frame protection (MFP, IEEE 802.11w).
*/
enum ieee80211_hw_flags {
IEEE80211_HW_RX_INCLUDES_FCS = 1<<1,
@@ -880,6 +883,7 @@
IEEE80211_HW_SUPPORTS_PS = 1<<11,
IEEE80211_HW_PS_NULLFUNC_STACK = 1<<12,
IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<13,
+ IEEE80211_HW_MFP_CAPABLE = 1<<14,
};
/**
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 2dd3874..70a29b6 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -976,6 +976,10 @@
ret = -EOPNOTSUPP;
break;
case IW_AUTH_MFP:
+ if (!(sdata->local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
if (sdata->vif.type == NL80211_IFTYPE_STATION ||
sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->u.sta.mfp = data->value;