1 files changed, 7 insertions, 1 deletions

diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 0ae23c60968..4d05ad9403a 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -183,7 +183,8 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         u8 *pos;
 
         if (info->control.hw_key &&
-            !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+            !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
+            !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
                 /* hwaccel - with no need for software-generated IV */
                 return 0;
         }
@@ -204,6 +205,11 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         memmove(pos, pos + TKIP_IV_LEN, hdrlen);
         pos += hdrlen;
 
+        /* the HW only needs room for the IV, but not the actual IV */
+        if (info->control.hw_key &&
+            (info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))
+                return 0;
+
         /* Increase IV for the frame */
         spin_lock_irqsave(&key->u.tkip.txlock, flags);
         key->u.tkip.tx.iv16++;