mac80211: properly validate/translate IW_AUTH_MFP values
Make sure nobody passes in bogus values, and translate the values
(although it isn't necessary).
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index bad1cfb..acd5808 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -982,9 +982,21 @@
break;
}
if (sdata->vif.type == NL80211_IFTYPE_STATION ||
- sdata->vif.type == NL80211_IFTYPE_ADHOC)
- sdata->u.sta.mfp = data->value;
- else
+ sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ switch (data->value) {
+ case IW_AUTH_MFP_DISABLED:
+ sdata->u.sta.mfp = IEEE80211_MFP_DISABLED;
+ break;
+ case IW_AUTH_MFP_OPTIONAL:
+ sdata->u.sta.mfp = IEEE80211_MFP_OPTIONAL;
+ break;
+ case IW_AUTH_MFP_REQUIRED:
+ sdata->u.sta.mfp = IEEE80211_MFP_REQUIRED;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ } else
ret = -EOPNOTSUPP;
break;
default: