1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00crypto.c b/drivers/net/wireless/rt2x00/rt2x00crypto.c
index c6709b392165..37ad0d2fb64c 100644
--- a/drivers/net/wireless/rt2x00/rt2x00crypto.c
+++ b/drivers/net/wireless/rt2x00/rt2x00crypto.c
@@ -46,6 +46,29 @@ enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key)
         }
 }
 
+void rt2x00crypto_create_tx_descriptor(struct queue_entry *entry,
+                                       struct txentry_desc *txdesc)
+{
+        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
+        struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
+
+        __set_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags);
+
+        txdesc->cipher = rt2x00crypto_key_to_cipher(hw_key);
+
+        if (hw_key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
+                __set_bit(ENTRY_TXD_ENCRYPT_PAIRWISE, &txdesc->flags);
+
+        txdesc->key_idx = hw_key->hw_key_idx;
+        txdesc->iv_offset = ieee80211_get_hdrlen_from_skb(entry->skb);
+
+        if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV))
+                __set_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags);
+
+        if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC))
+                __set_bit(ENTRY_TXD_ENCRYPT_MMIC, &txdesc->flags);
+}
+
 unsigned int rt2x00crypto_tx_overhead(struct ieee80211_tx_info *tx_info)
 {
         struct ieee80211_key_conf *key = tx_info->control.hw_key;