X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fmichael_mic.c;h=9e917b8011b11e1b712bf769bf8c7bdab4a79a6e;hb=019a5f56ec195aceadada18aaaad0f67294bdaef;hp=a470bcb3693eafa6d034d8df5ec60c06ed998ab1;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6-omap-h63xx.git

diff --git a/crypto/michael_mic.c b/crypto/michael_mic.c
index a470bcb3693..9e917b8011b 100644
--- a/crypto/michael_mic.c
+++ b/crypto/michael_mic.c
@@ -3,17 +3,19 @@
  *
  * Michael MIC (IEEE 802.11i/TKIP) keyed digest
  *
- * Copyright (c) 2004 Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright (c) 2004 Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
 
+#include <asm/byteorder.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/crypto.h>
+#include <linux/types.h>
 
 
 struct michael_mic_ctx {
@@ -43,31 +45,18 @@ do {				\
 } while (0)
 
 
-static inline u32 get_le32(const u8 *p)
+static void michael_init(struct crypto_tfm *tfm)
 {
-	return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
-
-static inline void put_le32(u8 *p, u32 v)
-{
-	p[0] = v;
-	p[1] = v >> 8;
-	p[2] = v >> 16;
-	p[3] = v >> 24;
-}
-
-
-static void michael_init(void *ctx)
-{
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
 	mctx->pending_len = 0;
 }
 
 
-static void michael_update(void *ctx, const u8 *data, unsigned int len)
+static void michael_update(struct crypto_tfm *tfm, const u8 *data,
+			   unsigned int len)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
+	const __le32 *src;
 
 	if (mctx->pending_len) {
 		int flen = 4 - mctx->pending_len;
@@ -81,29 +70,32 @@ static void michael_update(void *ctx, const u8 *data, unsigned int len)
 		if (mctx->pending_len < 4)
 			return;
 
-		mctx->l ^= get_le32(mctx->pending);
+		src = (const __le32 *)mctx->pending;
+		mctx->l ^= le32_to_cpup(src);
 		michael_block(mctx->l, mctx->r);
 		mctx->pending_len = 0;
 	}
 
+	src = (const __le32 *)data;
+
 	while (len >= 4) {
-		mctx->l ^= get_le32(data);
+		mctx->l ^= le32_to_cpup(src++);
 		michael_block(mctx->l, mctx->r);
-		data += 4;
 		len -= 4;
 	}
 
 	if (len > 0) {
 		mctx->pending_len = len;
-		memcpy(mctx->pending, data, len);
+		memcpy(mctx->pending, src, len);
 	}
 }
 
 
-static void michael_final(void *ctx, u8 *out)
+static void michael_final(struct crypto_tfm *tfm, u8 *out)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
 	u8 *data = mctx->pending;
+	__le32 *dst = (__le32 *)out;
 
 	/* Last block and padding (0x5a, 4..7 x 0) */
 	switch (mctx->pending_len) {
@@ -125,22 +117,24 @@ static void michael_final(void *ctx, u8 *out)
 	/* l ^= 0; */
 	michael_block(mctx->l, mctx->r);
 
-	put_le32(out, mctx->l);
-	put_le32(out + 4, mctx->r);
+	dst[0] = cpu_to_le32(mctx->l);
+	dst[1] = cpu_to_le32(mctx->r);
 }
 
 
-static int michael_setkey(void *ctx, const u8 *key, unsigned int keylen,
-			  u32 *flags)
+static int michael_setkey(struct crypto_tfm *tfm, const u8 *key,
+			  unsigned int keylen)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
+	const __le32 *data = (const __le32 *)key;
+
 	if (keylen != 8) {
-		if (flags)
-			*flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
+		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
 		return -EINVAL;
 	}
-	mctx->l = get_le32(key);
-	mctx->r = get_le32(key + 4);
+
+	mctx->l = le32_to_cpu(data[0]);
+	mctx->r = le32_to_cpu(data[1]);
 	return 0;
 }
 
@@ -151,6 +145,7 @@ static struct crypto_alg michael_mic_alg = {
 	.cra_blocksize	= 8,
 	.cra_ctxsize	= sizeof(struct michael_mic_ctx),
 	.cra_module	= THIS_MODULE,
+	.cra_alignmask	= 3,
 	.cra_list	= LIST_HEAD_INIT(michael_mic_alg.cra_list),
 	.cra_u		= { .digest = {
 	.dia_digestsize	= 8,
@@ -178,4 +173,4 @@ module_exit(michael_mic_exit);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Michael MIC");
-MODULE_AUTHOR("Jouni Malinen <jkmaline@cc.hut.fi>");
+MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");