orinoco: Move MIC helpers into new file

No functional change.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/orinoco/Makefile

@@ -1,7 +1,7 @@
 #
 # Makefile for the orinoco wireless device drivers.
 #
-orinoco-objs := main.o scan.o
+orinoco-objs := main.o mic.o scan.o
 
 obj-$(CONFIG_HERMES)		+= orinoco.o hermes.o hermes_dld.o
 obj-$(CONFIG_PCMCIA_HERMES)	+= orinoco_cs.o

drivers/net/wireless/orinoco/main.c

@@ -90,12 +90,10 @@
 #include <linux/ieee80211.h>
 #include <net/iw_handler.h>
 
-#include <linux/scatterlist.h>
-#include <linux/crypto.h>
-
 #include "hermes_rid.h"
 #include "hermes_dld.h"
 #include "scan.h"
+#include "mic.h"
 
 #include "orinoco.h"
 
@@ -254,74 +252,6 @@ struct orinoco_rx_data {
 static int __orinoco_program_rids(struct net_device *dev);
 static void __orinoco_set_multicast_list(struct net_device *dev);
 
-/********************************************************************/
-/* Michael MIC crypto setup                                         */
-/********************************************************************/
-#define MICHAEL_MIC_LEN 8
-static int orinoco_mic_init(struct orinoco_private *priv)
-{
-	priv->tx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
-	if (IS_ERR(priv->tx_tfm_mic)) {
-		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
-		       "crypto API michael_mic\n");
-		priv->tx_tfm_mic = NULL;
-		return -ENOMEM;
-	}
-
-	priv->rx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
-	if (IS_ERR(priv->rx_tfm_mic)) {
-		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
-		       "crypto API michael_mic\n");
-		priv->rx_tfm_mic = NULL;
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void orinoco_mic_free(struct orinoco_private *priv)
-{
-	if (priv->tx_tfm_mic)
-		crypto_free_hash(priv->tx_tfm_mic);
-	if (priv->rx_tfm_mic)
-		crypto_free_hash(priv->rx_tfm_mic);
-}
-
-static int michael_mic(struct crypto_hash *tfm_michael, u8 *key,
-		       u8 *da, u8 *sa, u8 priority,
-		       u8 *data, size_t data_len, u8 *mic)
-{
-	struct hash_desc desc;
-	struct scatterlist sg[2];
-	u8 hdr[ETH_HLEN + 2]; /* size of header + padding */
-
-	if (tfm_michael == NULL) {
-		printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
-		return -1;
-	}
-
-	/* Copy header into buffer. We need the padding on the end zeroed */
-	memcpy(&hdr[0], da, ETH_ALEN);
-	memcpy(&hdr[ETH_ALEN], sa, ETH_ALEN);
-	hdr[ETH_ALEN*2] = priority;
-	hdr[ETH_ALEN*2+1] = 0;
-	hdr[ETH_ALEN*2+2] = 0;
-	hdr[ETH_ALEN*2+3] = 0;
-
-	/* Use scatter gather to MIC header and data in one go */
-	sg_init_table(sg, 2);
-	sg_set_buf(&sg[0], hdr, sizeof(hdr));
-	sg_set_buf(&sg[1], data, data_len);
-
-	if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN))
-		return -1;
-
-	desc.tfm = tfm_michael;
-	desc.flags = 0;
-	return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr),
-				  mic);
-}
-
 /********************************************************************/
 /* Internal helper functions                                        */
 /********************************************************************/
@@ -1001,7 +931,7 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
 			len = MICHAEL_MIC_LEN;
 		}
 
-		michael_mic(priv->tx_tfm_mic,
+		orinoco_mic(priv->tx_tfm_mic,
 			    priv->tkip_key[priv->tx_key].tx_mic,
 			    eh->h_dest, eh->h_source, 0 /* priority */,
 			    skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
@@ -1479,7 +1409,7 @@ static void orinoco_rx(struct net_device *dev,
 		skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
 		length -= MICHAEL_MIC_LEN;
 
-		michael_mic(priv->rx_tfm_mic,
+		orinoco_mic(priv->rx_tfm_mic,
 			    priv->tkip_key[key_id].rx_mic,
 			    desc->addr1,
 			    src,

drivers/net/wireless/orinoco/mic.c

@@ -0,0 +1,79 @@
+/* Orinoco MIC helpers
+ *
+ * See copyright notice in main.c
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/if_ether.h>
+#include <linux/scatterlist.h>
+#include <linux/crypto.h>
+
+#include "orinoco.h"
+#include "mic.h"
+
+/********************************************************************/
+/* Michael MIC crypto setup                                         */
+/********************************************************************/
+int orinoco_mic_init(struct orinoco_private *priv)
+{
+	priv->tx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
+	if (IS_ERR(priv->tx_tfm_mic)) {
+		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
+		       "crypto API michael_mic\n");
+		priv->tx_tfm_mic = NULL;
+		return -ENOMEM;
+	}
+
+	priv->rx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
+	if (IS_ERR(priv->rx_tfm_mic)) {
+		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
+		       "crypto API michael_mic\n");
+		priv->rx_tfm_mic = NULL;
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void orinoco_mic_free(struct orinoco_private *priv)
+{
+	if (priv->tx_tfm_mic)
+		crypto_free_hash(priv->tx_tfm_mic);
+	if (priv->rx_tfm_mic)
+		crypto_free_hash(priv->rx_tfm_mic);
+}
+
+int orinoco_mic(struct crypto_hash *tfm_michael, u8 *key,
+		u8 *da, u8 *sa, u8 priority,
+		u8 *data, size_t data_len, u8 *mic)
+{
+	struct hash_desc desc;
+	struct scatterlist sg[2];
+	u8 hdr[ETH_HLEN + 2]; /* size of header + padding */
+
+	if (tfm_michael == NULL) {
+		printk(KERN_WARNING "orinoco_mic: tfm_michael == NULL\n");
+		return -1;
+	}
+
+	/* Copy header into buffer. We need the padding on the end zeroed */
+	memcpy(&hdr[0], da, ETH_ALEN);
+	memcpy(&hdr[ETH_ALEN], sa, ETH_ALEN);
+	hdr[ETH_ALEN*2] = priority;
+	hdr[ETH_ALEN*2+1] = 0;
+	hdr[ETH_ALEN*2+2] = 0;
+	hdr[ETH_ALEN*2+3] = 0;
+
+	/* Use scatter gather to MIC header and data in one go */
+	sg_init_table(sg, 2);
+	sg_set_buf(&sg[0], hdr, sizeof(hdr));
+	sg_set_buf(&sg[1], data, data_len);
+
+	if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN))
+		return -1;
+
+	desc.tfm = tfm_michael;
+	desc.flags = 0;
+	return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr),
+				  mic);
+}

drivers/net/wireless/orinoco/mic.h

@@ -0,0 +1,22 @@
+/* Orinoco MIC helpers
+ *
+ * See copyright notice in main.c
+ */
+#ifndef _ORINOCO_MIC_H_
+#define _ORINOCO_MIC_H_
+
+#include <linux/types.h>
+
+#define MICHAEL_MIC_LEN 8
+
+/* Forward declarations */
+struct orinoco_private;
+struct crypto_hash;
+
+int orinoco_mic_init(struct orinoco_private *priv);
+void orinoco_mic_free(struct orinoco_private *priv);
+int orinoco_mic(struct crypto_hash *tfm_michael, u8 *key,
+		u8 *da, u8 *sa, u8 priority,
+		u8 *data, size_t data_len, u8 *mic);
+
+#endif /* ORINOCO_MIC_H */