commit 183798799216fad36c7219fe8d4d6dee6b8fa755
author Jeff Garzik <jeff@garzik.org> Fri Sep 22 21:19:05 2006 -0400
committer Jeff Garzik <jeff@garzik.org> Fri Sep 22 21:19:05 2006 -0400
tree eec3ee23ae45c095087315c70034cc140e309965
parent 9b6b0b81f0de6a17ce57c818d1f403253c200e1f

net/ieee80211: fix more crypto-related build breakage

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

net/ieee80211/ieee80211_crypt_tkip.c

diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c
index 259572d..4200ec5 100644
--- a/net/ieee80211/ieee80211_crypt_tkip.c
+++ b/net/ieee80211/ieee80211_crypt_tkip.c
@@ -93,7 +93,7 @@
 	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 @@
 	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 @@
 	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 @@
 	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 @@
 	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;