package/mac80211/patches/540-mac80211_tx_optimization.patch

   1 --- a/net/mac80211/tx.c
   2 +++ b/net/mac80211/tx.c
   3 @@ -1549,8 +1549,10 @@ static int ieee80211_skb_resize(struct i
   4
   5         if (skb_header_cloned(skb))
   6                 I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
   7 -       else
   8 +       else if (head_need || tail_need)
   9                 I802_DEBUG_INC(local->tx_expand_skb_head);
  10 +       else
  11 +               return 0;
  12
  13         if (pskb_expand_head(skb, head_need, tail_need, GFP_ATOMIC)) {
  14                 wiphy_debug(local->hw.wiphy,