mac80211: minor code cleanups

Nothing very interesting, some checkpatch inspired stuff,
some other things.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 19 deletions

diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 3a20b036ef4..7aa63caf8d5 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -49,8 +49,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
 	    !(tx->flags & IEEE80211_TX_FRAGMENTED) &&
 	    !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) &&
 	    !wpa_test) {
-		/* hwaccel - with no need for preallocated room for Michael MIC
-		 */
+		/* hwaccel - with no need for preallocated room for MMIC */
 		return TX_CONTINUE;
 	}
 
@@ -67,8 +66,6 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
 #else
 	authenticator = 1;
 #endif
-	/* At this point we know we're using ALG_TKIP. To get the MIC key
-	 * we now will rely on the offset from the ieee80211_key_conf::key */
 	key_offset = authenticator ?
 		NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY :
 		NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
@@ -91,9 +88,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
 	struct sk_buff *skb = rx->skb;
 	int authenticator = 1, wpa_test = 0;
 
-	/*
-	 * No way to verify the MIC if the hardware stripped it
-	 */
+	/* No way to verify the MIC if the hardware stripped it */
 	if (rx->status->flag & RX_FLAG_MMIC_STRIPPED)
 		return RX_CONTINUE;
 
@@ -115,8 +110,6 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
 #else
 	authenticator = 1;
 #endif
-	/* At this point we know we're using ALG_TKIP. To get the MIC key
-	 * we now will rely on the offset from the ieee80211_key_conf::key */
 	key_offset = authenticator ?
 		NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY :
 		NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
@@ -201,6 +194,7 @@ ieee80211_tx_result
 ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
 {
 	struct sk_buff *skb = tx->skb;
+	int i;
 
 	ieee80211_tx_set_protected(tx);
 
@@ -208,9 +202,8 @@ ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
 		return TX_DROP;
 
 	if (tx->extra_frag) {
-		int i;
 		for (i = 0; i < tx->num_extra_frag; i++) {
-			if (tkip_encrypt_skb(tx, tx->extra_frag[i]) < 0)
+			if (tkip_encrypt_skb(tx, tx->extra_frag[i]))
 				return TX_DROP;
 		}
 	}
@@ -348,7 +341,7 @@ static inline void ccmp_pn2hdr(u8 *hdr, u8 *pn, int key_id)
 }
 
 
-static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
+static inline void ccmp_hdr2pn(u8 *pn, u8 *hdr)
 {
 	pn[0] = hdr[7];
 	pn[1] = hdr[6];
@@ -356,7 +349,6 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
 	pn[3] = hdr[4];
 	pn[4] = hdr[1];
 	pn[5] = hdr[0];
-	return (hdr[3] >> 6) & 0x03;
 }
 
 
@@ -371,7 +363,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 
 	if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
 	    !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
-		/* hwaccel - with no need for preallocated room for CCMP "
+		/* hwaccel - with no need for preallocated room for CCMP
 		 * header or MIC fields */
 		info->control.hw_key = &tx->key->conf;
 		return 0;
@@ -424,6 +416,7 @@ ieee80211_tx_result
 ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
 {
 	struct sk_buff *skb = tx->skb;
+	int i;
 
 	ieee80211_tx_set_protected(tx);
 
@@ -431,9 +424,8 @@ ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
 		return TX_DROP;
 
 	if (tx->extra_frag) {
-		int i;
 		for (i = 0; i < tx->num_extra_frag; i++) {
-			if (ccmp_encrypt_skb(tx, tx->extra_frag[i]) < 0)
+			if (ccmp_encrypt_skb(tx, tx->extra_frag[i]))
 				return TX_DROP;
 		}
 	}
@@ -465,7 +457,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 	    (rx->status->flag & RX_FLAG_IV_STRIPPED))
 		return RX_CONTINUE;
 
-	(void) ccmp_hdr2pn(pn, skb->data + hdrlen);
+	ccmp_hdr2pn(pn, skb->data + hdrlen);
 
 	if (memcmp(pn, key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN) <= 0) {
 		key->u.ccmp.replays++;
@@ -480,9 +472,8 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 			    key->u.ccmp.tfm, key->u.ccmp.rx_crypto_buf,
 			    skb->data + hdrlen + CCMP_HDR_LEN, data_len,
 			    skb->data + skb->len - CCMP_MIC_LEN,
-			    skb->data + hdrlen + CCMP_HDR_LEN)) {
+			    skb->data + hdrlen + CCMP_HDR_LEN))
 			return RX_DROP_UNUSABLE;
-		}
 	}
 
 	memcpy(key->u.ccmp.rx_pn[rx->queue], pn, CCMP_PN_LEN);