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Diffstat (limited to 'net/ieee80211/ieee80211_crypt_wep.c')
-rw-r--r--net/ieee80211/ieee80211_crypt_wep.c35
1 files changed, 24 insertions, 11 deletions
diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c
index 0ebf235f6939..b435b28857ed 100644
--- a/net/ieee80211/ieee80211_crypt_wep.c
+++ b/net/ieee80211/ieee80211_crypt_wep.c
@@ -32,7 +32,8 @@ struct prism2_wep_data {
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
- struct crypto_tfm *tfm;
+ struct crypto_tfm *tx_tfm;
+ struct crypto_tfm *rx_tfm;
};
static void *prism2_wep_init(int keyidx)
@@ -44,13 +45,19 @@ static void *prism2_wep_init(int keyidx)
goto fail;
priv->key_idx = keyidx;
- priv->tfm = crypto_alloc_tfm("arc4", 0);
- if (priv->tfm == NULL) {
+ priv->tx_tfm = crypto_alloc_tfm("arc4", 0);
+ if (priv->tx_tfm == NULL) {
printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
"crypto API arc4\n");
goto fail;
}
+ priv->rx_tfm = crypto_alloc_tfm("arc4", 0);
+ if (priv->rx_tfm == NULL) {
+ printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
+ "crypto API arc4\n");
+ goto fail;
+ }
/* start WEP IV from a random value */
get_random_bytes(&priv->iv, 4);
@@ -58,8 +65,10 @@ static void *prism2_wep_init(int keyidx)
fail:
if (priv) {
- if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ if (priv->tx_tfm)
+ crypto_free_tfm(priv->tx_tfm);
+ if (priv->rx_tfm)
+ crypto_free_tfm(priv->rx_tfm);
kfree(priv);
}
return NULL;
@@ -68,8 +77,12 @@ static void *prism2_wep_init(int keyidx)
static void prism2_wep_deinit(void *priv)
{
struct prism2_wep_data *_priv = priv;
- if (_priv && _priv->tfm)
- crypto_free_tfm(_priv->tfm);
+ if (_priv) {
+ if (_priv->tx_tfm)
+ crypto_free_tfm(_priv->tx_tfm);
+ if (_priv->rx_tfm)
+ crypto_free_tfm(_priv->rx_tfm);
+ }
kfree(priv);
}
@@ -151,11 +164,11 @@ 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->tfm, key, klen);
+ crypto_cipher_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->tfm, &sg, &sg, len + 4);
+ crypto_cipher_encrypt(wep->tx_tfm, &sg, &sg, len + 4);
return 0;
}
@@ -194,11 +207,11 @@ 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->tfm, key, klen);
+ crypto_cipher_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->tfm, &sg, &sg, plen + 4);
+ crypto_cipher_decrypt(wep->rx_tfm, &sg, &sg, plen + 4);
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;