mac80211: pass internal sta to ieee80211_tx_frags()

This simplifies the code somewhat, and if necessary would let
us access the sta itself in that code.

Link: https://lore.kernel.org/r/1569965193-Id656db92703dded4bb2e3ec5dc329529f58e58f0@changeid
Signed-off-by: Johannes Berg <[e-mail]>

net/mac80211/tx.c

···
 
 static bool ieee80211_tx_frags(struct ieee80211_local *local,
 			       struct ieee80211_vif *vif,
-			       struct ieee80211_sta *sta,
+			       struct sta_info *sta,
 			       struct sk_buff_head *skbs,
 			       bool txpending)
 {
···
 		spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 
 		info->control.vif = vif;
-		control.sta = sta;
+		control.sta = sta ? &sta->sta : NULL;
 
 		__skb_unlink(skb, skbs);
 		drv_tx(local, &control, skb);
···
 	struct ieee80211_tx_info *info;
 	struct ieee80211_sub_if_data *sdata;
 	struct ieee80211_vif *vif;
-	struct ieee80211_sta *pubsta;
 	struct sk_buff *skb;
 	bool result = true;
 	__le16 fc;
···
 	sdata = vif_to_sdata(info->control.vif);
 	if (sta && !sta->uploaded)
 		sta = NULL;
-
-	if (sta)
-		pubsta = &sta->sta;
-	else
-		pubsta = NULL;
 
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_MONITOR:
···
 		break;
 	}
 
-	result = ieee80211_tx_frags(local, vif, pubsta, skbs,
-				    txpending);
+	result = ieee80211_tx_frags(local, vif, sta, skbs, txpending);
 
 	ieee80211_tpt_led_trig_tx(local, fc, led_len);
 
···
 				     struct ieee80211_sub_if_data, u.ap);
 
 	__skb_queue_tail(&tx.skbs, skb);
-	ieee80211_tx_frags(local, &sdata->vif, &sta->sta, &tx.skbs, false);
+	ieee80211_tx_frags(local, &sdata->vif, sta, &tx.skbs, false);
 	return true;
 }