ath5k: enable hardware encryption for WEP

This change re-enables hardware encryption for ath5k after setting up
mac80211 to handle the initialization vectors which happens to make it
work.  Add a module param (nohwcrypt) to optionally turn it off.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index 6f368e8cdf17..4bf3678529b8 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -60,6 +60,9 @@
 #include "debug.h"
 
 static int ath5k_calinterval = 10; /* Calibrate PHY every 10 secs (TODO: Fixme) */
+static int modparam_nohwcrypt;
+module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
+MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
 
 
 /******************\
@@ -2975,11 +2978,12 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
         struct ath5k_softc *sc = hw->priv;
         int ret = 0;
 
+        if (modparam_nohwcrypt)
+                return -EOPNOTSUPP;
+
         switch (key->alg) {
         case ALG_WEP:
-        /* XXX: fix hardware encryption, its not working. For now
-         * allow software encryption */
-                /* break; */
+                break;
         case ALG_TKIP:
         case ALG_CCMP:
                 return -EOPNOTSUPP;
@@ -2999,6 +3003,7 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
                 }
                 __set_bit(key->keyidx, sc->keymap);
                 key->hw_key_idx = key->keyidx;
+                key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
                 break;
         case DISABLE_KEY:
                 ath5k_hw_reset_key(sc->ah, key->keyidx);