[PATCH] ieee80211: in-tree driver updates to sync with latest ieee802…

…11 series

Changed crypto method from requiring a struct ieee80211_device reference
to the init handler.  Instead we now have a get/set flags method for
each crypto component.

Setting of TKIP countermeasures can now be done via
set_flags(IEEE80211_CRYPTO_TKIP_COUNTERMEASURES)

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

include/net/ieee80211.h

@@ -876,7 +876,6 @@ struct ieee80211_device {
 	/* WPA data */
 	int wpa_enabled;
 	int drop_unencrypted;
-	int tkip_countermeasures;
 	int privacy_invoked;
 	size_t wpa_ie_len;
 	u8 *wpa_ie;

include/net/ieee80211_crypt.h

@@ -25,13 +25,17 @@
 
 #include <linux/skbuff.h>
 
+enum {
+	IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1<<0),
+};
+
 struct ieee80211_crypto_ops {
 	const char *name;
 
 	/* init new crypto context (e.g., allocate private data space,
 	 * select IV, etc.); returns NULL on failure or pointer to allocated
 	 * private data on success */
-	void *(*init) (struct ieee80211_device * ieee, int keyidx);
+	void *(*init) (int keyidx);
 
 	/* deinitialize crypto context and free allocated private data */
 	void (*deinit) (void *priv);
@@ -60,6 +64,10 @@ struct ieee80211_crypto_ops {
 	 * statistics */
 	char *(*print_stats) (char *p, void *priv);
 
+	/* Crypto specific flag get/set for configuration settings */
+	unsigned long (*get_flags)(void *priv);
+	unsigned long (*set_flags)(unsigned long flags, void *priv);
+
 	/* maximum number of bytes added by encryption; encrypt buf is
 	 * allocated with extra_prefix_len bytes, copy of in_buf, and
 	 * extra_postfix_len; encrypt need not use all this space, but

net/ieee80211/ieee80211_crypt.c

@@ -202,8 +202,7 @@ struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name)
 		return NULL;
 }
 
-static void *ieee80211_crypt_null_init(struct ieee80211_device *ieee,
-				       int keyidx)
+static void *ieee80211_crypt_null_init(int keyidx)
 {
 	return (void *)1;
 }

net/ieee80211/ieee80211_crypt_ccmp.c

@@ -74,7 +74,7 @@ static void ieee80211_ccmp_aes_encrypt(struct crypto_tfm *tfm,
 	crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN);
 }
 
-static void *ieee80211_ccmp_init(struct ieee80211_device *ieee, int key_idx)
+static void *ieee80211_ccmp_init(int key_idx)
 {
 	struct ieee80211_ccmp_data *priv;
 

net/ieee80211/ieee80211_crypt_tkip.c

@@ -60,10 +60,24 @@ struct ieee80211_tkip_data {
 	/* scratch buffers for virt_to_page() (crypto API) */
 	u8 rx_hdr[16], tx_hdr[16];
 
-	struct ieee80211_device *ieee;
+	unsigned long flags;
 };
 
-static void *ieee80211_tkip_init(struct ieee80211_device *ieee, int key_idx)
+static unsigned long ieee80211_tkip_set_flags(unsigned long flags, void *priv)
+{
+	struct ieee80211_tkip_data *_priv = priv;
+	unsigned long old_flags = _priv->flags;
+	_priv->flags = flags;
+	return old_flags;
+}
+
+static unsigned long ieee80211_tkip_get_flags(void *priv)
+{
+	struct ieee80211_tkip_data *_priv = priv;
+	return _priv->flags;
+}
+
+static void *ieee80211_tkip_init(int key_idx)
 {
 	struct ieee80211_tkip_data *priv;
 
@@ -72,8 +86,6 @@ static void *ieee80211_tkip_init(struct ieee80211_device *ieee, int key_idx)
 		goto fail;
 	memset(priv, 0, sizeof(*priv));
 
-	priv->ieee = ieee;
-
 	priv->key_idx = key_idx;
 
 	priv->tfm_arc4 = crypto_alloc_tfm("arc4", 0);
@@ -315,13 +327,13 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	u8 *pos;
 	struct scatterlist sg;
 
-	if (tkey->ieee->tkip_countermeasures) {
+	if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) {
 		if (net_ratelimit()) {
 			struct ieee80211_hdr_4addr *hdr =
 			    (struct ieee80211_hdr_4addr *)skb->data;
-			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
+			printk(KERN_DEBUG "TKIP countermeasures: dropped "
 			       "TX packet to " MAC_FMT "\n",
-			       tkey->ieee->dev->name, MAC_ARG(hdr->addr1));
+			       MAC_ARG(hdr->addr1));
 		}
 		return -1;
 	}
@@ -366,11 +378,11 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 
 	hdr = (struct ieee80211_hdr_4addr *)skb->data;
 
-	if (tkey->ieee->tkip_countermeasures) {
+	if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) {
 		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
+			printk(KERN_DEBUG "TKIP countermeasures: dropped "
 			       "received packet from " MAC_FMT "\n",
-			       tkey->ieee->dev->name, MAC_ARG(hdr->addr2));
+			       MAC_ARG(hdr->addr2));
 		}
 		return -1;
 	}
@@ -694,6 +706,8 @@ static struct ieee80211_crypto_ops ieee80211_crypt_tkip = {
 	.extra_mpdu_prefix_len = 4 + 4,	/* IV + ExtIV */
 	.extra_mpdu_postfix_len = 4,	/* ICV */
 	.extra_msdu_postfix_len = 8,	/* MIC */
+	.get_flags = ieee80211_tkip_get_flags,
+	.set_flags = ieee80211_tkip_set_flags,
 	.owner = THIS_MODULE,
 };
 

net/ieee80211/ieee80211_crypt_wep.c

@@ -37,7 +37,7 @@ struct prism2_wep_data {
 	struct crypto_tfm *tfm;
 };
 
-static void *prism2_wep_init(struct ieee80211_device *ieee, int keyidx)
+static void *prism2_wep_init(int keyidx)
 {
 	struct prism2_wep_data *priv;
 

net/ieee80211/ieee80211_module.c

@@ -155,7 +155,6 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 	spin_lock_init(&ieee->lock);
 
 	ieee->wpa_enabled = 0;
-	ieee->tkip_countermeasures = 0;
 	ieee->drop_unencrypted = 0;
 	ieee->privacy_invoked = 0;
 

net/ieee80211/ieee80211_wx.c

@@ -355,7 +355,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 		}
 
 		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
-			new_crypt->priv = new_crypt->ops->init(ieee, key);
+			new_crypt->priv = new_crypt->ops->init(key);
 
 		if (!new_crypt->ops || !new_crypt->priv) {
 			kfree(new_crypt);
@@ -598,7 +598,7 @@ int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
 		memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
 		new_crypt->ops = ops;
 		if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
-			new_crypt->priv = new_crypt->ops->init(ieee, idx);
+			new_crypt->priv = new_crypt->ops->init(idx);
 		if (new_crypt->priv == NULL) {
 			kfree(new_crypt);
 			ret = -EINVAL;