mac80211: wpa.c remove rx/tx_data ->fc users

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

net/mac80211/wpa.c

@@ -28,19 +28,16 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
 	size_t data_len;
 	unsigned int hdrlen;
 	struct ieee80211_hdr *hdr;
-	u16 fc;
 	struct sk_buff *skb = tx->skb;
 	int authenticator;
 	int wpa_test = 0;
 	int tail;
 
-	fc = tx->fc;
-
+	hdr = (struct ieee80211_hdr *)skb->data;
 	if (!tx->key || tx->key->conf.alg != ALG_TKIP || skb->len < 24 ||
-	    !WLAN_FC_DATA_PRESENT(fc))
+	    !ieee80211_is_data_present(hdr->frame_control))
 		return TX_CONTINUE;
 
-	hdr = (struct ieee80211_hdr *)skb->data;
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 	if (skb->len < hdrlen)
 		return TX_DROP;
@@ -90,25 +87,23 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
 	size_t data_len;
 	unsigned int hdrlen;
 	struct ieee80211_hdr *hdr;
-	u16 fc;
 	u8 mic[MICHAEL_MIC_LEN];
 	struct sk_buff *skb = rx->skb;
 	int authenticator = 1, wpa_test = 0;
 	DECLARE_MAC_BUF(mac);
 
-	fc = rx->fc;
-
 	/*
 	 * No way to verify the MIC if the hardware stripped it
 	 */
 	if (rx->status->flag & RX_FLAG_MMIC_STRIPPED)
 		return RX_CONTINUE;
 
+	hdr = (struct ieee80211_hdr *)skb->data;
 	if (!rx->key || rx->key->conf.alg != ALG_TKIP ||
-	    !(rx->fc & IEEE80211_FCTL_PROTECTED) || !WLAN_FC_DATA_PRESENT(fc))
+	    !ieee80211_has_protected(hdr->frame_control) ||
+	    !ieee80211_is_data_present(hdr->frame_control))
 		return RX_CONTINUE;
 
-	hdr = (struct ieee80211_hdr *)skb->data;
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 	if (skb->len < hdrlen + MICHAEL_MIC_LEN)
 		return RX_DROP_UNUSABLE;
@@ -239,7 +234,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
 
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 
-	if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+	if (!ieee80211_is_data(hdr->frame_control))
 		return RX_CONTINUE;
 
 	if (!rx->sta || skb->len - hdrlen < 12)
@@ -458,7 +453,7 @@ ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
 ieee80211_rx_result
 ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 {
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
 	int hdrlen;
 	struct ieee80211_key *key = rx->key;
 	struct sk_buff *skb = rx->skb;
@@ -468,7 +463,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 
-	if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+	if (!ieee80211_is_data(hdr->frame_control))
 		return RX_CONTINUE;
 
 	data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;