---

yaml
---
r: 103359
b: refs/heads/master
c: feccb46
h: refs/heads/master
i:
  103357: 8f0cbe0
  103355: 8a725c9
  103351: 0c32efa
  103343: 1668906
  103327: 65f35b5
  103295: bb342bf
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c34498b9e633baa3266af98106502633b6bc371b
+refs/heads/master: feccb466944cb1aeaabc701cfde6771f3be74919

trunk/net/mac80211/aes_ccm.c

@@ -53,15 +53,17 @@ static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
 
 
 void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
-			       u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+			       u8 *data, size_t data_len,
 			       u8 *cdata, u8 *mic)
 {
 	int i, j, last_len, num_blocks;
-	u8 *pos, *cpos, *b, *s_0, *e;
+	u8 *pos, *cpos, *b, *s_0, *e, *b_0, *aad;
 
 	b = scratch;
 	s_0 = scratch + AES_BLOCK_LEN;
 	e = scratch + 2 * AES_BLOCK_LEN;
+	b_0 = scratch + 3 * AES_BLOCK_LEN;
+	aad = scratch + 4 * AES_BLOCK_LEN;
 
 	num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
 	last_len = data_len % AES_BLOCK_LEN;
@@ -92,15 +94,16 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
 
 
 int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
-			      u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
-			      u8 *mic, u8 *data)
+			      u8 *cdata, size_t data_len, u8 *mic, u8 *data)
 {
 	int i, j, last_len, num_blocks;
-	u8 *pos, *cpos, *b, *s_0, *a;
+	u8 *pos, *cpos, *b, *s_0, *a, *b_0, *aad;
 
 	b = scratch;
 	s_0 = scratch + AES_BLOCK_LEN;
 	a = scratch + 2 * AES_BLOCK_LEN;
+	b_0 = scratch + 3 * AES_BLOCK_LEN;
+	aad = scratch + 4 * AES_BLOCK_LEN;
 
 	num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
 	last_len = data_len % AES_BLOCK_LEN;

trunk/net/mac80211/aes_ccm.h

@@ -16,10 +16,10 @@
 
 struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]);
 void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
-			       u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+			       u8 *data, size_t data_len,
 			       u8 *cdata, u8 *mic);
 int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
-			      u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
+			      u8 *cdata, size_t data_len,
 			      u8 *mic, u8 *data);
 void ieee80211_aes_key_free(struct crypto_cipher *tfm);
 

trunk/net/mac80211/wpa.c

@@ -274,16 +274,20 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
 }
 
 
-static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
+static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
 				int encrypted)
 {
 	__le16 mask_fc;
 	int a4_included;
 	u8 qos_tid;
+	u8 *b_0, *aad;
 	u16 data_len, len_a;
 	unsigned int hdrlen;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
+	b_0 = scratch + 3 * AES_BLOCK_LEN;
+	aad = scratch + 4 * AES_BLOCK_LEN;
+
 	/*
 	 * Mask FC: zero subtype b4 b5 b6
 	 * Retry, PwrMgt, MoreData; set Protected
@@ -367,7 +371,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 	struct ieee80211_key *key = tx->key;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	int hdrlen, len, tail;
-	u8 *pos, *pn, *b_0, *aad, *scratch;
+	u8 *pos, *pn;
 	int i;
 
 	info->control.icv_len = CCMP_MIC_LEN;
@@ -381,10 +385,6 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 		return 0;
 	}
 
-	scratch = key->u.ccmp.tx_crypto_buf;
-	b_0 = scratch + 3 * AES_BLOCK_LEN;
-	aad = scratch + 4 * AES_BLOCK_LEN;
-
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 	len = skb->len - hdrlen;
 
@@ -420,8 +420,8 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 	}
 
 	pos += CCMP_HDR_LEN;
-	ccmp_special_blocks(skb, pn, b_0, aad, 0);
-	ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, b_0, aad, pos, len,
+	ccmp_special_blocks(skb, pn, key->u.ccmp.tx_crypto_buf, 0);
+	ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, key->u.ccmp.tx_crypto_buf, pos, len,
 				  pos, skb_put(skb, CCMP_MIC_LEN));
 
 	return 0;
@@ -483,16 +483,10 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 
 	if (!(rx->status->flag & RX_FLAG_DECRYPTED)) {
 		/* hardware didn't decrypt/verify MIC */
-		u8 *scratch, *b_0, *aad;
-
-		scratch = key->u.ccmp.rx_crypto_buf;
-		b_0 = scratch + 3 * AES_BLOCK_LEN;
-		aad = scratch + 4 * AES_BLOCK_LEN;
-
-		ccmp_special_blocks(skb, pn, b_0, aad, 1);
+		ccmp_special_blocks(skb, pn, key->u.ccmp.rx_crypto_buf, 1);
 
 		if (ieee80211_aes_ccm_decrypt(
-			    key->u.ccmp.tfm, scratch, b_0, aad,
+			    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)) {