rt2x00: Move iv_len into tx descriptor data

By placing the iv_len into the tx descriptor data and
by passing this data to the crypto IV handlers we can
save multiple calls to ieee80211_get_hdrlen_from_skb()
and some if-statements when copying/removing the IV data
from the outgoing frame.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h
index a631613177d0..af3c47bd43bd 100644
--- a/drivers/net/wireless/rt2x00/rt2x00lib.h
+++ b/drivers/net/wireless/rt2x00/rt2x00lib.h
@@ -295,8 +295,10 @@ void rt2x00crypto_create_tx_descriptor(struct queue_entry *entry,
                                        struct txentry_desc *txdesc);
 unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev,
                                       struct sk_buff *skb);
-void rt2x00crypto_tx_copy_iv(struct sk_buff *skb, unsigned int iv_len);
-void rt2x00crypto_tx_remove_iv(struct sk_buff *skb, unsigned int iv_len);
+void rt2x00crypto_tx_copy_iv(struct sk_buff *skb,
+                             struct txentry_desc *txdesc);
+void rt2x00crypto_tx_remove_iv(struct sk_buff *skb,
+                               struct txentry_desc *txdesc);
 void rt2x00crypto_tx_insert_iv(struct sk_buff *skb);
 void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, unsigned int align,
                                unsigned int header_length,
@@ -319,12 +321,12 @@ static inline unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev
 }
 
 static inline void rt2x00crypto_tx_copy_iv(struct sk_buff *skb,
-                                           unsigned int iv_len)
+                                           struct txentry_desc *txdesc)
 {
 }
 
 static inline void rt2x00crypto_tx_remove_iv(struct sk_buff *skb,
-                                             unsigned int iv_len)
+                                             struct txentry_desc *txdesc)
 {
 }