mac80211: move TX station pointer and restructure TX

Remove the control.sta pointer from ieee80211_tx_info to free up
sufficient space in the TX skb control buffer for the upcoming
Transmit Power Control (TPC).
Instead, the pointer is now on the stack in a new control struct
that is passed as a function parameter to the drivers' tx method.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[reworded commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index df9203199102..a81117a83996 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -22,9 +22,11 @@ get_bss_sdata(struct ieee80211_sub_if_data *sdata)
         return sdata;
 }
 
-static inline void drv_tx(struct ieee80211_local *local, struct sk_buff *skb)
+static inline void drv_tx(struct ieee80211_local *local,
+                          struct ieee80211_tx_control *control,
+                          struct sk_buff *skb)
 {
-        local->ops->tx(&local->hw, skb);
+        local->ops->tx(&local->hw, control, skb);
 }
 
 static inline void drv_get_et_strings(struct ieee80211_sub_if_data *sdata,