mac80211: use ieee80211 frame control directly

Remove the last users of the rx/tx_data->fc data members and use the
le16 frame_control from the header directly.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 14 insertions, 21 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 9c60ded..96ffb4d 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -82,6 +82,7 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
 	struct ieee80211_rate *txrate;
 	struct ieee80211_local *local = tx->local;
 	struct ieee80211_supported_band *sband;
+	struct ieee80211_hdr *hdr;
 
 	sband = local->hw.wiphy->bands[tx->channel->band];
 	txrate = &sband->bitrates[tx->rate_idx];
@@ -107,8 +108,8 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
 	 *   at the highest possible rate belonging to the PHY rates in the
 	 *   BSSBasicRateSet
 	 */
-
-	if ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) {
+	hdr = (struct ieee80211_hdr *)tx->skb->data;
+	if (ieee80211_is_ctl(hdr->frame_control)) {
 		/* TODO: These control frames are not currently sent by
 		 * 80211.o, but should they be implemented, this function
 		 * needs to be updated to support duration field calculation.
@@ -213,9 +214,8 @@ static int inline is_ieee80211_device(struct net_device *dev,
 static ieee80211_tx_result debug_noinline
 ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
 	u32 sta_flags;
 
@@ -223,8 +223,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 		return TX_CONTINUE;
 
 	if (unlikely(tx->local->sta_sw_scanning) &&
-	    ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
-	     (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
+	    !ieee80211_is_probe_req(hdr->frame_control))
 		return TX_DROP;
 
 	if (tx->sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
@@ -238,7 +237,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 	if (likely(tx->flags & IEEE80211_TX_UNICAST)) {
 		if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
 			     tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
-			     (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
+			     ieee80211_is_data(hdr->frame_control))) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 			DECLARE_MAC_BUF(mac);
 			printk(KERN_DEBUG "%s: dropped data frame to not "
@@ -249,7 +248,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 			return TX_DROP;
 		}
 	} else {
-		if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+		if (unlikely(ieee80211_is_data(hdr->frame_control) &&
 			     tx->local->num_sta == 0 &&
 			     tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS)) {
 			/*
@@ -315,6 +314,7 @@ static ieee80211_tx_result
 ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
 
 	/*
 	 * broadcast/multicast frame
@@ -329,7 +329,7 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
 		return TX_CONTINUE;
 
 	/* no buffering for ordered frames */
-	if (tx->fc & IEEE80211_FCTL_ORDER)
+	if (ieee80211_has_order(hdr->frame_control))
 		return TX_CONTINUE;
 
 	/* no stations in PS mode */
@@ -367,12 +367,11 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
 {
 	struct sta_info *sta = tx->sta;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
 	u32 staflags;
 	DECLARE_MAC_BUF(mac);
 
-	if (unlikely(!sta ||
-		     ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
-		      (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
+	if (unlikely(!sta || ieee80211_is_probe_resp(hdr->frame_control)))
 		return TX_CONTINUE;
 
 	staflags = get_sta_flags(sta);
@@ -437,7 +436,7 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 {
 	struct ieee80211_key *key;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
-	u16 fc = tx->fc;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
 
 	if (unlikely(tx->skb->do_not_encrypt))
 		tx->key = NULL;
@@ -454,22 +453,16 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 		tx->key = NULL;
 
 	if (tx->key) {
-		u16 ftype, stype;
-
 		tx->key->tx_rx_count++;
 		/* TODO: add threshold stuff again */
 
 		switch (tx->key->conf.alg) {
 		case ALG_WEP:
-			ftype = fc & IEEE80211_FCTL_FTYPE;
-			stype = fc & IEEE80211_FCTL_STYPE;
-
-			if (ftype == IEEE80211_FTYPE_MGMT &&
-			    stype == IEEE80211_STYPE_AUTH)
+			if (ieee80211_is_auth(hdr->frame_control))
 				break;
 		case ALG_TKIP:
 		case ALG_CCMP:
-			if (!WLAN_FC_DATA_PRESENT(fc))
+			if (!ieee80211_is_data_present(hdr->frame_control))
 				tx->key = NULL;
 			break;
 		}