net/mac80211: move WEP handling to ARC4 library interface

The WEP code in the mac80211 subsystem currently uses the crypto
API to access the arc4 (RC4) cipher, which is overly complicated,
and doesn't really have an upside in this particular case, since
ciphers are always synchronous and therefore always implemented in
software. Given that we have no accelerated software implementations
either, it is much more straightforward to invoke a generic library
interface directly.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b7a9fe3d5fcb..048a07b101b4 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/fips.h>
 #include <linux/if_ether.h>
 #include <linux/skbuff.h>
 #include <linux/if_arp.h>
@@ -5038,7 +5039,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
                 auth_alg = WLAN_AUTH_OPEN;
                 break;
         case NL80211_AUTHTYPE_SHARED_KEY:
-                if (IS_ERR(local->wep_tx_tfm))
+                if (fips_enabled)
                         return -EOPNOTSUPP;
                 auth_alg = WLAN_AUTH_SHARED_KEY;
                 break;