mac80211: make minstrel/pid RC use ieee80211_is_data(fc)

Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/rc80211_minstrel.c

@@ -75,12 +75,11 @@ use_low_rate(struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	u16 fc;
+	__le16 fc;
 
-	fc = le16_to_cpu(hdr->frame_control);
+	fc = hdr->frame_control;
 
-	return ((info->flags & IEEE80211_TX_CTL_NO_ACK) ||
-		(fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA);
+	return ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc));
 }
 
 

net/mac80211/rc80211_pid_algo.c

@@ -280,7 +280,7 @@ rate_control_pid_get_rate(void *priv, struct ieee80211_sta *sta,
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct rc_pid_sta_info *spinfo = priv_sta;
 	int rateidx;
-	u16 fc;
+	__le16 fc;
 
 	if (txrc->rts)
 		info->control.rates[0].count =
@@ -290,9 +290,8 @@ rate_control_pid_get_rate(void *priv, struct ieee80211_sta *sta,
 			txrc->hw->conf.short_frame_max_tx_count;
 
 	/* Send management frames and NO_ACK data using lowest rate. */
-	fc = le16_to_cpu(hdr->frame_control);
-	if (!sta || !spinfo ||
-	    (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+	fc = hdr->frame_control;
+	if (!sta || !spinfo || !ieee80211_is_data(fc) ||
 	    info->flags & IEEE80211_TX_CTL_NO_ACK) {
 		info->control.rates[0].idx = rate_lowest_index(sband, sta);
 		if (info->flags & IEEE80211_TX_CTL_NO_ACK)