mac80211: refuse shared key auth when WEP is unavailable

When WEP is not available, we should reject shared
key authentication because it could never succeed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7a4e4bffbc71..cf8d72196c65 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2031,6 +2031,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
                 auth_alg = WLAN_AUTH_OPEN;
                 break;
         case NL80211_AUTHTYPE_SHARED_KEY:
+                if (IS_ERR(sdata->local->wep_tx_tfm))
+                        return -EOPNOTSUPP;
                 auth_alg = WLAN_AUTH_SHARED_KEY;
                 break;
         case NL80211_AUTHTYPE_FT: