mac80211: avoid duplicate TX path station lookup

Instead of looking up the destination station twice in the TX path
(first to build the header, and then for control processing), save
it when building the header and use it later in the TX path.

To avoid having to look up the station in the many callers, allow
those to pass %NULL which keeps the existing lookup.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 57b71432ec65..0aaf8b04a738 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3576,7 +3576,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
                 nullfunc->qos_ctrl = cpu_to_le16(7);
 
         local_bh_disable();
-        ieee80211_xmit(sdata, skb);
+        ieee80211_xmit(sdata, sta, skb);
         local_bh_enable();
         rcu_read_unlock();