Merge commit 'v2.6.32' into reiserfs/kill-bkl

Merge-reason: The tree was based 2.6.31. It's better to be up to date
with 2.6.32. Although no conflicting changes were made in between,
it gives benchmarking results closer to the lastest kernel behaviour.

6 files changed, 366 insertions, 63 deletions

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 5a2bd1cc9656..1ffb53f74d37 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -22,11 +22,9 @@ struct seq_file;
 
 struct crypto_type {
         unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask);
-        unsigned int (*extsize)(struct crypto_alg *alg,
-                                const struct crypto_type *frontend);
+        unsigned int (*extsize)(struct crypto_alg *alg);
         int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
-        int (*init_tfm)(struct crypto_tfm *tfm,
-                        const struct crypto_type *frontend);
+        int (*init_tfm)(struct crypto_tfm *tfm);
         void (*show)(struct seq_file *m, struct crypto_alg *alg);
         struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
 
@@ -52,6 +50,7 @@ struct crypto_template {
 
         struct crypto_instance *(*alloc)(struct rtattr **tb);
         void (*free)(struct crypto_instance *inst);
+        int (*create)(struct crypto_template *tmpl, struct rtattr **tb);
 
         char name[CRYPTO_MAX_ALG_NAME];
 };
@@ -60,6 +59,7 @@ struct crypto_spawn {
         struct list_head list;
         struct crypto_alg *alg;
         struct crypto_instance *inst;
+        const struct crypto_type *frontend;
         u32 mask;
 };
 
@@ -114,11 +114,19 @@ int crypto_register_template(struct crypto_template *tmpl);
 void crypto_unregister_template(struct crypto_template *tmpl);
 struct crypto_template *crypto_lookup_template(const char *name);
 
+int crypto_register_instance(struct crypto_template *tmpl,
+                             struct crypto_instance *inst);
+
 int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
                       struct crypto_instance *inst, u32 mask);
+int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
+                       struct crypto_instance *inst,
+                       const struct crypto_type *frontend);
+
 void crypto_drop_spawn(struct crypto_spawn *spawn);
 struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
                                     u32 mask);
+void *crypto_spawn_tfm2(struct crypto_spawn *spawn);
 
 static inline void crypto_set_spawn(struct crypto_spawn *spawn,
                                     struct crypto_instance *inst)
@@ -129,8 +137,19 @@ static inline void crypto_set_spawn(struct crypto_spawn *spawn,
 struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
 int crypto_check_attr_type(struct rtattr **tb, u32 type);
 const char *crypto_attr_alg_name(struct rtattr *rta);
-struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask);
+struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
+                                    const struct crypto_type *frontend,
+                                    u32 type, u32 mask);
+
+static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta,
+                                                 u32 type, u32 mask)
+{
+        return crypto_attr_alg2(rta, NULL, type, mask);
+}
+
 int crypto_attr_u32(struct rtattr *rta, u32 *num);
+void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
+                             unsigned int head);
 struct crypto_instance *crypto_alloc_instance(const char *name,
                                               struct crypto_alg *alg);
 
@@ -157,12 +176,8 @@ int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
 
 static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
 {
-        unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
-        unsigned long align = crypto_tfm_alg_alignmask(tfm);
-
-        if (align <= crypto_tfm_ctx_alignment())
-                align = 1;
-        return (void *)ALIGN(addr, align);
+        return PTR_ALIGN(crypto_tfm_ctx(tfm),
+                         crypto_tfm_alg_alignmask(tfm) + 1);
 }
 
 static inline struct crypto_instance *crypto_tfm_alg_instance(
diff --git a/include/crypto/cryptd.h b/include/crypto/cryptd.h
index 55fa7bbdbc71..2f65a6e8ea4d 100644
--- a/include/crypto/cryptd.h
+++ b/include/crypto/cryptd.h
@@ -7,6 +7,7 @@
 
 #include <linux/crypto.h>
 #include <linux/kernel.h>
+#include <crypto/hash.h>
 
 struct cryptd_ablkcipher {
         struct crypto_ablkcipher base;
@@ -24,4 +25,20 @@ struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
 struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm);
 void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm);
 
+struct cryptd_ahash {
+        struct crypto_ahash base;
+};
+
+static inline struct cryptd_ahash *__cryptd_ahash_cast(
+        struct crypto_ahash *tfm)
+{
+        return (struct cryptd_ahash *)tfm;
+}
+
+/* alg_name should be algorithm to be cryptd-ed */
+struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name,
+                                        u32 type, u32 mask);
+struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm);
+void cryptd_free_ahash(struct cryptd_ahash *tfm);
+
 #endif
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index d56bb71617c3..26cb1eb16f4c 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -15,6 +15,42 @@
 
 #include <linux/crypto.h>
 
+struct crypto_ahash;
+
+struct hash_alg_common {
+        unsigned int digestsize;
+        unsigned int statesize;
+
+        struct crypto_alg base;
+};
+
+struct ahash_request {
+        struct crypto_async_request base;
+
+        unsigned int nbytes;
+        struct scatterlist *src;
+        u8 *result;
+
+        /* This field may only be used by the ahash API code. */
+        void *priv;
+
+        void *__ctx[] CRYPTO_MINALIGN_ATTR;
+};
+
+struct ahash_alg {
+        int (*init)(struct ahash_request *req);
+        int (*update)(struct ahash_request *req);
+        int (*final)(struct ahash_request *req);
+        int (*finup)(struct ahash_request *req);
+        int (*digest)(struct ahash_request *req);
+        int (*export)(struct ahash_request *req, void *out);
+        int (*import)(struct ahash_request *req, const void *in);
+        int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
+                      unsigned int keylen);
+
+        struct hash_alg_common halg;
+};
+
 struct shash_desc {
         struct crypto_shash *tfm;
         u32 flags;
@@ -24,7 +60,6 @@ struct shash_desc {
 
 struct shash_alg {
         int (*init)(struct shash_desc *desc);
-        int (*reinit)(struct shash_desc *desc);
         int (*update)(struct shash_desc *desc, const u8 *data,
                       unsigned int len);
         int (*final)(struct shash_desc *desc, u8 *out);
@@ -32,38 +67,48 @@ struct shash_alg {
                      unsigned int len, u8 *out);
         int (*digest)(struct shash_desc *desc, const u8 *data,
                       unsigned int len, u8 *out);
+        int (*export)(struct shash_desc *desc, void *out);
+        int (*import)(struct shash_desc *desc, const void *in);
         int (*setkey)(struct crypto_shash *tfm, const u8 *key,
                       unsigned int keylen);
 
         unsigned int descsize;
-        unsigned int digestsize;
+
+        /* These fields must match hash_alg_common. */
+        unsigned int digestsize
+                __attribute__ ((aligned(__alignof__(struct hash_alg_common))));
+        unsigned int statesize;
 
         struct crypto_alg base;
 };
 
 struct crypto_ahash {
+        int (*init)(struct ahash_request *req);
+        int (*update)(struct ahash_request *req);
+        int (*final)(struct ahash_request *req);
+        int (*finup)(struct ahash_request *req);
+        int (*digest)(struct ahash_request *req);
+        int (*export)(struct ahash_request *req, void *out);
+        int (*import)(struct ahash_request *req, const void *in);
+        int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
+                      unsigned int keylen);
+
+        unsigned int reqsize;
         struct crypto_tfm base;
 };
 
 struct crypto_shash {
+        unsigned int descsize;
         struct crypto_tfm base;
 };
 
 static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
 {
-        return (struct crypto_ahash *)tfm;
+        return container_of(tfm, struct crypto_ahash, base);
 }
 
-static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
-                                                      u32 type, u32 mask)
-{
-        type &= ~CRYPTO_ALG_TYPE_MASK;
-        mask &= ~CRYPTO_ALG_TYPE_MASK;
-        type |= CRYPTO_ALG_TYPE_AHASH;
-        mask |= CRYPTO_ALG_TYPE_AHASH_MASK;
-
-        return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
-}
+struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
+                                        u32 mask);
 
 static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
 {
@@ -72,7 +117,7 @@ static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
 
 static inline void crypto_free_ahash(struct crypto_ahash *tfm)
 {
-        crypto_free_tfm(crypto_ahash_tfm(tfm));
+        crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
 }
 
 static inline unsigned int crypto_ahash_alignmask(
@@ -81,14 +126,26 @@ static inline unsigned int crypto_ahash_alignmask(
         return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
 }
 
-static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
+static inline struct hash_alg_common *__crypto_hash_alg_common(
+        struct crypto_alg *alg)
+{
+        return container_of(alg, struct hash_alg_common, base);
+}
+
+static inline struct hash_alg_common *crypto_hash_alg_common(
+        struct crypto_ahash *tfm)
 {
-        return &crypto_ahash_tfm(tfm)->crt_ahash;
+        return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg);
 }
 
 static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
 {
-        return crypto_ahash_crt(tfm)->digestsize;
+        return crypto_hash_alg_common(tfm)->digestsize;
+}
+
+static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
+{
+        return crypto_hash_alg_common(tfm)->statesize;
 }
 
 static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
@@ -114,7 +171,7 @@ static inline struct crypto_ahash *crypto_ahash_reqtfm(
 
 static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
 {
-        return crypto_ahash_crt(tfm)->reqsize;
+        return tfm->reqsize;
 }
 
 static inline void *ahash_request_ctx(struct ahash_request *req)
@@ -122,44 +179,30 @@ static inline void *ahash_request_ctx(struct ahash_request *req)
         return req->__ctx;
 }
 
-static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
-                                      const u8 *key, unsigned int keylen)
-{
-        struct ahash_tfm *crt = crypto_ahash_crt(tfm);
-
-        return crt->setkey(tfm, key, keylen);
-}
+int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
+                        unsigned int keylen);
+int crypto_ahash_finup(struct ahash_request *req);
+int crypto_ahash_final(struct ahash_request *req);
+int crypto_ahash_digest(struct ahash_request *req);
 
-static inline int crypto_ahash_digest(struct ahash_request *req)
+static inline int crypto_ahash_export(struct ahash_request *req, void *out)
 {
-        struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
-        return crt->digest(req);
+        return crypto_ahash_reqtfm(req)->export(req, out);
 }
 
-static inline void crypto_ahash_export(struct ahash_request *req, u8 *out)
+static inline int crypto_ahash_import(struct ahash_request *req, const void *in)
 {
-        memcpy(out, ahash_request_ctx(req),
-               crypto_ahash_reqsize(crypto_ahash_reqtfm(req)));
+        return crypto_ahash_reqtfm(req)->import(req, in);
 }
 
-int crypto_ahash_import(struct ahash_request *req, const u8 *in);
-
 static inline int crypto_ahash_init(struct ahash_request *req)
 {
-        struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
-        return crt->init(req);
+        return crypto_ahash_reqtfm(req)->init(req);
 }
 
 static inline int crypto_ahash_update(struct ahash_request *req)
 {
-        struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
-        return crt->update(req);
-}
-
-static inline int crypto_ahash_final(struct ahash_request *req)
-{
-        struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
-        return crt->final(req);
+        return crypto_ahash_reqtfm(req)->update(req);
 }
 
 static inline void ahash_request_set_tfm(struct ahash_request *req,
@@ -184,7 +227,7 @@ static inline struct ahash_request *ahash_request_alloc(
 
 static inline void ahash_request_free(struct ahash_request *req)
 {
-        kfree(req);
+        kzfree(req);
 }
 
 static inline struct ahash_request *ahash_request_cast(
@@ -251,6 +294,11 @@ static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm)
         return crypto_shash_alg(tfm)->digestsize;
 }
 
+static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm)
+{
+        return crypto_shash_alg(tfm)->statesize;
+}
+
 static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm)
 {
         return crypto_tfm_get_flags(crypto_shash_tfm(tfm));
@@ -268,7 +316,7 @@ static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags)
 
 static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
 {
-        return crypto_shash_alg(tfm)->descsize;
+        return tfm->descsize;
 }
 
 static inline void *shash_desc_ctx(struct shash_desc *desc)
@@ -281,12 +329,15 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
 int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
                         unsigned int len, u8 *out);
 
-static inline void crypto_shash_export(struct shash_desc *desc, u8 *out)
+static inline int crypto_shash_export(struct shash_desc *desc, void *out)
 {
-        memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm));
+        return crypto_shash_alg(desc->tfm)->export(desc, out);
 }
 
-int crypto_shash_import(struct shash_desc *desc, const u8 *in);
+static inline int crypto_shash_import(struct shash_desc *desc, const void *in)
+{
+        return crypto_shash_alg(desc->tfm)->import(desc, in);
+}
 
 static inline int crypto_shash_init(struct shash_desc *desc)
 {
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 82b70564bcab..5bfad8c80595 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -34,6 +34,22 @@ struct crypto_hash_walk {
         unsigned int flags;
 };
 
+struct ahash_instance {
+        struct ahash_alg alg;
+};
+
+struct shash_instance {
+        struct shash_alg alg;
+};
+
+struct crypto_ahash_spawn {
+        struct crypto_spawn base;
+};
+
+struct crypto_shash_spawn {
+        struct crypto_spawn base;
+};
+
 extern const struct crypto_type crypto_ahash_type;
 
 int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
@@ -43,18 +59,100 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
                                   struct crypto_hash_walk *walk,
                                   struct scatterlist *sg, unsigned int len);
 
+static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
+{
+        return !(walk->entrylen | walk->total);
+}
+
+int crypto_register_ahash(struct ahash_alg *alg);
+int crypto_unregister_ahash(struct ahash_alg *alg);
+int ahash_register_instance(struct crypto_template *tmpl,
+                            struct ahash_instance *inst);
+void ahash_free_instance(struct crypto_instance *inst);
+
+int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
+                            struct hash_alg_common *alg,
+                            struct crypto_instance *inst);
+
+static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
+{
+        crypto_drop_spawn(&spawn->base);
+}
+
+struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
+
 int crypto_register_shash(struct shash_alg *alg);
 int crypto_unregister_shash(struct shash_alg *alg);
+int shash_register_instance(struct crypto_template *tmpl,
+                            struct shash_instance *inst);
+void shash_free_instance(struct crypto_instance *inst);
+
+int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
+                            struct shash_alg *alg,
+                            struct crypto_instance *inst);
+
+static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
+{
+        crypto_drop_spawn(&spawn->base);
+}
+
+struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
+
+int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
+int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
+int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
+
+int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
 
 static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
 {
-        return crypto_tfm_ctx(&tfm->base);
+        return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
+}
+
+static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
+{
+        return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
+                            halg);
+}
+
+static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
+                                            unsigned int reqsize)
+{
+        tfm->reqsize = reqsize;
+}
+
+static inline struct crypto_instance *ahash_crypto_instance(
+        struct ahash_instance *inst)
+{
+        return container_of(&inst->alg.halg.base, struct crypto_instance, alg);
 }
 
-static inline struct ahash_alg *crypto_ahash_alg(
-        struct crypto_ahash *tfm)
+static inline struct ahash_instance *ahash_instance(
+        struct crypto_instance *inst)
 {
-        return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
+        return container_of(&inst->alg, struct ahash_instance, alg.halg.base);
+}
+
+static inline void *ahash_instance_ctx(struct ahash_instance *inst)
+{
+        return crypto_instance_ctx(ahash_crypto_instance(inst));
+}
+
+static inline unsigned int ahash_instance_headroom(void)
+{
+        return sizeof(struct ahash_alg) - sizeof(struct crypto_alg);
+}
+
+static inline struct ahash_instance *ahash_alloc_instance(
+        const char *name, struct crypto_alg *alg)
+{
+        return crypto_alloc_instance2(name, alg, ahash_instance_headroom());
+}
+
+static inline struct crypto_ahash *crypto_spawn_ahash(
+        struct crypto_ahash_spawn *spawn)
+{
+        return crypto_spawn_tfm2(&spawn->base);
 }
 
 static inline int ahash_enqueue_request(struct crypto_queue *queue,
@@ -80,5 +178,46 @@ static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
         return crypto_tfm_ctx(&tfm->base);
 }
 
+static inline struct crypto_instance *shash_crypto_instance(
+        struct shash_instance *inst)
+{
+        return container_of(&inst->alg.base, struct crypto_instance, alg);
+}
+
+static inline struct shash_instance *shash_instance(
+        struct crypto_instance *inst)
+{
+        return container_of(__crypto_shash_alg(&inst->alg),
+                            struct shash_instance, alg);
+}
+
+static inline void *shash_instance_ctx(struct shash_instance *inst)
+{
+        return crypto_instance_ctx(shash_crypto_instance(inst));
+}
+
+static inline struct shash_instance *shash_alloc_instance(
+        const char *name, struct crypto_alg *alg)
+{
+        return crypto_alloc_instance2(name, alg,
+                                      sizeof(struct shash_alg) - sizeof(*alg));
+}
+
+static inline struct crypto_shash *crypto_spawn_shash(
+        struct crypto_shash_spawn *spawn)
+{
+        return crypto_spawn_tfm2(&spawn->base);
+}
+
+static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
+{
+        return crypto_tfm_ctx_aligned(&tfm->base);
+}
+
+static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
+{
+        return container_of(tfm, struct crypto_shash, base);
+}
+
 #endif  /* _CRYPTO_INTERNAL_HASH_H */
 
diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index c0ccc2b1a2d8..069e85ba97e1 100644
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -5,6 +5,8 @@
 #ifndef _CRYPTO_SHA_H
 #define _CRYPTO_SHA_H
 
+#include <linux/types.h>
+
 #define SHA1_DIGEST_SIZE        20
 #define SHA1_BLOCK_SIZE         64
 
@@ -62,4 +64,22 @@
 #define SHA512_H6       0x1f83d9abfb41bd6bULL
 #define SHA512_H7       0x5be0cd19137e2179ULL
 
+struct sha1_state {
+        u64 count;
+        u32 state[SHA1_DIGEST_SIZE / 4];
+        u8 buffer[SHA1_BLOCK_SIZE];
+};
+
+struct sha256_state {
+        u64 count;
+        u32 state[SHA256_DIGEST_SIZE / 4];
+        u8 buf[SHA256_BLOCK_SIZE];
+};
+
+struct sha512_state {
+        u64 count[2];
+        u64 state[SHA512_DIGEST_SIZE / 8];
+        u8 buf[SHA512_BLOCK_SIZE];
+};
+
 #endif
diff --git a/include/crypto/vmac.h b/include/crypto/vmac.h
new file mode 100644
index 000000000000..c4467c55df1e
--- /dev/null
+++ b/include/crypto/vmac.h
@@ -0,0 +1,61 @@
+/*
+ * Modified to interface to the Linux kernel
+ * Copyright (c) 2009, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef __CRYPTO_VMAC_H
+#define __CRYPTO_VMAC_H
+
+/* --------------------------------------------------------------------------
+ * VMAC and VHASH Implementation by Ted Krovetz (tdk@acm.org) and Wei Dai.
+ * This implementation is herby placed in the public domain.
+ * The authors offers no warranty. Use at your own risk.
+ * Please send bug reports to the authors.
+ * Last modified: 17 APR 08, 1700 PDT
+ * ----------------------------------------------------------------------- */
+
+/*
+ * User definable settings.
+ */
+#define VMAC_TAG_LEN    64
+#define VMAC_KEY_SIZE   128/* Must be 128, 192 or 256                   */
+#define VMAC_KEY_LEN    (VMAC_KEY_SIZE/8)
+#define VMAC_NHBYTES    128/* Must 2^i for any 3 < i < 13 Standard = 128*/
+
+/*
+ * This implementation uses u32 and u64 as names for unsigned 32-
+ * and 64-bit integer types. These are defined in C99 stdint.h. The
+ * following may need adaptation if you are not running a C99 or
+ * Microsoft C environment.
+ */
+struct vmac_ctx {
+        u64 nhkey[(VMAC_NHBYTES/8)+2*(VMAC_TAG_LEN/64-1)];
+        u64 polykey[2*VMAC_TAG_LEN/64];
+        u64 l3key[2*VMAC_TAG_LEN/64];
+        u64 polytmp[2*VMAC_TAG_LEN/64];
+        u64 cached_nonce[2];
+        u64 cached_aes[2];
+        int first_block_processed;
+};
+
+typedef u64 vmac_t;
+
+struct vmac_ctx_t {
+        struct crypto_cipher *child;
+        struct vmac_ctx __vmac_ctx;
+};
+
+#endif /* __CRYPTO_VMAC_H */