net/ieee80211: fix more crypto-related build breakage

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 17 insertions, 2 deletions

diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c
index 259572dfd4f1..4200ec509866 100644
--- a/net/ieee80211/ieee80211_crypt_tkip.c
+++ b/net/ieee80211/ieee80211_crypt_tkip.c
@@ -93,7 +93,7 @@ static void *ieee80211_tkip_init(int key_idx)
         if (IS_ERR(priv->tx_tfm_arc4)) {
                 printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
                        "crypto API arc4\n");
-                priv->tfm_arc4 = NULL;
+                priv->tx_tfm_arc4 = NULL;
                 goto fail;
         }
 
@@ -102,6 +102,7 @@ static void *ieee80211_tkip_init(int key_idx)
         if (IS_ERR(priv->tx_tfm_michael)) {
                 printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
                        "crypto API michael_mic\n");
+                priv->tx_tfm_michael = NULL;
                 goto fail;
         }
 
@@ -110,6 +111,7 @@ static void *ieee80211_tkip_init(int key_idx)
         if (IS_ERR(priv->rx_tfm_arc4)) {
                 printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
                        "crypto API arc4\n");
+                priv->rx_tfm_arc4 = NULL;
                 goto fail;
         }
 
@@ -118,7 +120,7 @@ static void *ieee80211_tkip_init(int key_idx)
         if (IS_ERR(priv->rx_tfm_michael)) {
                 printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
                        "crypto API michael_mic\n");
-                priv->tfm_michael = NULL;
+                priv->rx_tfm_michael = NULL;
                 goto fail;
         }
 
@@ -392,6 +394,19 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
         return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
 }
 
+/*
+ * deal with seq counter wrapping correctly.
+ * refer to timer_after() for jiffies wrapping handling
+ */
+static inline int tkip_replay_check(u32 iv32_n, u16 iv16_n,
+                                    u32 iv32_o, u16 iv16_o)
+{
+        if ((s32)iv32_n - (s32)iv32_o < 0 ||
+            (iv32_n == iv32_o && iv16_n <= iv16_o))
+                return 1;
+        return 0;
+}
+
 static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
         struct ieee80211_tkip_data *tkey = priv;