X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=net%2Fieee80211%2Fieee80211_crypt_wep.c;h=ec6d8851a06103e96e89f1b6cc5db8305cc371fe;hb=03feb0524660bcd890674d11d29a1873ca14d13c;hp=b435b28857edec3c16b201a65c620483670a0d6b;hpb=fd8ae94eea9bb4269d6dff1b47b9dc741bd70d0b;p=linux-2.6-omap-h63xx.git

diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c
index b435b28857e..ec6d8851a06 100644
--- a/net/ieee80211/ieee80211_crypt_wep.c
+++ b/net/ieee80211/ieee80211_crypt_wep.c
@@ -9,11 +9,13 @@
  * more details.
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/random.h>
 #include <linux/skbuff.h>
+#include <linux/mm.h>
 #include <asm/string.h>
 
 #include <net/ieee80211.h>
@@ -32,8 +34,8 @@ struct prism2_wep_data {
 	u8 key[WEP_KEY_LEN + 1];
 	u8 key_len;
 	u8 key_idx;
-	struct crypto_tfm *tx_tfm;
-	struct crypto_tfm *rx_tfm;
+	struct crypto_blkcipher *tx_tfm;
+	struct crypto_blkcipher *rx_tfm;
 };
 
 static void *prism2_wep_init(int keyidx)
@@ -45,17 +47,19 @@ static void *prism2_wep_init(int keyidx)
 		goto fail;
 	priv->key_idx = keyidx;
 
-	priv->tx_tfm = crypto_alloc_tfm("arc4", 0);
-	if (priv->tx_tfm == NULL) {
+	priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->tx_tfm)) {
 		printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
 		       "crypto API arc4\n");
+		priv->tx_tfm = NULL;
 		goto fail;
 	}
 
-	priv->rx_tfm = crypto_alloc_tfm("arc4", 0);
-	if (priv->rx_tfm == NULL) {
+	priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->rx_tfm)) {
 		printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
 		       "crypto API arc4\n");
+		priv->rx_tfm = NULL;
 		goto fail;
 	}
 	/* start WEP IV from a random value */
@@ -66,9 +70,9 @@ static void *prism2_wep_init(int keyidx)
       fail:
 	if (priv) {
 		if (priv->tx_tfm)
-			crypto_free_tfm(priv->tx_tfm);
+			crypto_free_blkcipher(priv->tx_tfm);
 		if (priv->rx_tfm)
-			crypto_free_tfm(priv->rx_tfm);
+			crypto_free_blkcipher(priv->rx_tfm);
 		kfree(priv);
 	}
 	return NULL;
@@ -79,9 +83,9 @@ static void prism2_wep_deinit(void *priv)
 	struct prism2_wep_data *_priv = priv;
 	if (_priv) {
 		if (_priv->tx_tfm)
-			crypto_free_tfm(_priv->tx_tfm);
+			crypto_free_blkcipher(_priv->tx_tfm);
 		if (_priv->rx_tfm)
-			crypto_free_tfm(_priv->rx_tfm);
+			crypto_free_blkcipher(_priv->rx_tfm);
 	}
 	kfree(priv);
 }
@@ -93,7 +97,7 @@ static int prism2_wep_build_iv(struct sk_buff *skb, int hdr_len,
 	struct prism2_wep_data *wep = priv;
 	u32 klen, len;
 	u8 *pos;
-	
+
 	if (skb_headroom(skb) < 4 || skb->len < hdr_len)
 		return -1;
 
@@ -133,6 +137,7 @@ static int prism2_wep_build_iv(struct sk_buff *skb, int hdr_len,
 static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
 	struct prism2_wep_data *wep = priv;
+	struct blkcipher_desc desc = { .tfm = wep->tx_tfm };
 	u32 crc, klen, len;
 	u8 *pos, *icv;
 	struct scatterlist sg;
@@ -141,17 +146,17 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	/* other checks are in prism2_wep_build_iv */
 	if (skb_tailroom(skb) < 4)
 		return -1;
-	
+
 	/* add the IV to the frame */
 	if (prism2_wep_build_iv(skb, hdr_len, NULL, 0, priv))
 		return -1;
-	
+
 	/* Copy the IV into the first 3 bytes of the key */
 	memcpy(key, skb->data + hdr_len, 3);
 
 	/* Copy rest of the WEP key (the secret part) */
 	memcpy(key + 3, wep->key, wep->key_len);
-	
+
 	len = skb->len - hdr_len - 4;
 	pos = skb->data + hdr_len + 4;
 	klen = 3 + wep->key_len;
@@ -164,13 +169,11 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	icv[2] = crc >> 16;
 	icv[3] = crc >> 24;
 
-	crypto_cipher_setkey(wep->tx_tfm, key, klen);
+	crypto_blkcipher_setkey(wep->tx_tfm, key, klen);
 	sg.page = virt_to_page(pos);
 	sg.offset = offset_in_page(pos);
 	sg.length = len + 4;
-	crypto_cipher_encrypt(wep->tx_tfm, &sg, &sg, len + 4);
-
-	return 0;
+	return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
 }
 
 /* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
@@ -183,6 +186,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
 	struct prism2_wep_data *wep = priv;
+	struct blkcipher_desc desc = { .tfm = wep->rx_tfm };
 	u32 crc, klen, plen;
 	u8 key[WEP_KEY_LEN + 3];
 	u8 keyidx, *pos, icv[4];
@@ -207,11 +211,12 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	/* Apply RC4 to data and compute CRC32 over decrypted data */
 	plen = skb->len - hdr_len - 8;
 
-	crypto_cipher_setkey(wep->rx_tfm, key, klen);
+	crypto_blkcipher_setkey(wep->rx_tfm, key, klen);
 	sg.page = virt_to_page(pos);
 	sg.offset = offset_in_page(pos);
 	sg.length = plen + 4;
-	crypto_cipher_decrypt(wep->rx_tfm, &sg, &sg, plen + 4);
+	if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
+		return -7;
 
 	crc = ~crc32_le(~0, pos, plen);
 	icv[0] = crc;