[CRYPTO] scatterwalk: Move scatterwalk.h to linux/crypto

The scatterwalk infrastructure is used by algorithms so it needs to
move out of crypto for future users that may live in drivers/crypto
or asm/*/crypto.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/authenc.c b/crypto/authenc.c
index 6c9104ebf2f40999da0fde80b1c0ffff8c0cd40f..fbbc2b505a21579dd8907c267f41638294770291 100644 (file)
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -12,6 +12,7 @@
 
 #include <crypto/algapi.h>
 #include <crypto/authenc.h>
+#include <crypto/scatterwalk.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -20,8 +21,6 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 
-#include "scatterwalk.h"
-
 struct authenc_instance_ctx {
        struct crypto_spawn auth;
        struct crypto_spawn enc;

diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index 180d91451476faf0e65f5195963b46015fa21bb2..7939504dfd8b1486039e490dcb7b76ede35b0983 100644 (file)
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -14,6 +14,7 @@
  *
  */
 
+#include <crypto/scatterwalk.h>
 #include <linux/crypto.h>
 #include <linux/errno.h>
 #include <linux/hardirq.h>
@@ -25,7 +26,6 @@
 #include <linux/string.h>
 
 #include "internal.h"
-#include "scatterwalk.h"
 
 enum {
        BLKCIPHER_WALK_PHYS = 1 << 0,

diff --git a/crypto/digest.c b/crypto/digest.c
index d3e827a141f11cf458d848e0e54c042895cc169e..52845f53f8e1b862c8bcd55b4cb32e8980d2581f 100644 (file)
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -12,6 +12,7 @@
  *
  */
 
+#include <crypto/scatterwalk.h>
 #include <linux/mm.h>
 #include <linux/errno.h>
 #include <linux/hardirq.h>
@@ -20,8 +21,6 @@
 #include <linux/module.h>
 #include <linux/scatterlist.h>
 
-#include "internal.h"
-
 static int init(struct hash_desc *desc)
 {
        struct crypto_tfm *tfm = crypto_hash_tfm(desc->tfm);

diff --git a/crypto/gcm.c b/crypto/gcm.c
index d60c340b0b9dc7e18f0144ca0a1b5ccde75865ef..27483f361e8027cecdfa67068cc5e028d91ae0d5 100644 (file)
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -10,13 +10,14 @@
 
 #include <crypto/algapi.h>
 #include <crypto/gf128mul.h>
+#include <crypto/scatterwalk.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 
-#include "scatterwalk.h"
+#include "internal.h"
 
 struct gcm_instance_ctx {
        struct crypto_spawn ctr;

diff --git a/crypto/internal.h b/crypto/internal.h
index abb01f71f817a80192a449439ed0ecd0565d60c6..cb13952f82bfc83c8cf767f40409cb6eff865239 100644 (file)
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -25,7 +25,6 @@
 #include <linux/notifier.h>
 #include <linux/rwsem.h>
 #include <linux/slab.h>
-#include <asm/kmap_types.h>
 
 /* Crypto notification events. */
 enum {
@@ -50,34 +49,6 @@ extern struct list_head crypto_alg_list;
 extern struct rw_semaphore crypto_alg_sem;
 extern struct blocking_notifier_head crypto_chain;
 
-static inline enum km_type crypto_kmap_type(int out)
-{
-       enum km_type type;
-
-       if (in_softirq())
-               type = out * (KM_SOFTIRQ1 - KM_SOFTIRQ0) + KM_SOFTIRQ0;
-       else
-               type = out * (KM_USER1 - KM_USER0) + KM_USER0;
-
-       return type;
-}
-
-static inline void *crypto_kmap(struct page *page, int out)
-{
-       return kmap_atomic(page, crypto_kmap_type(out));
-}
-
-static inline void crypto_kunmap(void *vaddr, int out)
-{
-       kunmap_atomic(vaddr, crypto_kmap_type(out));
-}
-
-static inline void crypto_yield(u32 flags)
-{
-       if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
-               cond_resched();
-}
-
 #ifdef CONFIG_PROC_FS
 void __init crypto_init_proc(void);
 void __exit crypto_exit_proc(void);

diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index 206c39a97e57d3f3d50d0bf8e72eeb4b929d98c6..12d19019e178ebb18a21fa9a61cc4a9433fa3cf1 100644 (file)
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -13,6 +13,8 @@
  * any later version.
  *
  */
+
+#include <crypto/scatterwalk.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/module.h>
@@ -20,9 +22,6 @@
 #include <linux/highmem.h>
 #include <linux/scatterlist.h>
 
-#include "internal.h"
-#include "scatterwalk.h"
-
 static inline void memcpy_dir(void *buf, void *sgdata, size_t nbytes, int out)
 {
        void *src = out ? buf : sgdata;

diff --git a/crypto/scatterwalk.h b/crypto/scatterwalk.h
deleted file mode 100644 (file)
index fd5517d..0000000
--- a/crypto/scatterwalk.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- * Copyright (c) 2002 Adam J. Richter <adam@yggdrasil.com>
- * Copyright (c) 2004 Jean-Luc Cooke <jlcooke@certainkey.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- */
-
-#ifndef _CRYPTO_SCATTERWALK_H
-#define _CRYPTO_SCATTERWALK_H
-
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-
-#include "internal.h"
-
-static inline unsigned long scatterwalk_samebuf(struct scatter_walk *walk_in,
-                                               struct scatter_walk *walk_out)
-{
-       return !(((sg_page(walk_in->sg) - sg_page(walk_out->sg)) << PAGE_SHIFT) +
-                (int)(walk_in->offset - walk_out->offset));
-}
-
-static inline unsigned int scatterwalk_pagelen(struct scatter_walk *walk)
-{
-       unsigned int len = walk->sg->offset + walk->sg->length - walk->offset;
-       unsigned int len_this_page = offset_in_page(~walk->offset) + 1;
-       return len_this_page > len ? len : len_this_page;
-}
-
-static inline unsigned int scatterwalk_clamp(struct scatter_walk *walk,
-                                            unsigned int nbytes)
-{
-       unsigned int len_this_page = scatterwalk_pagelen(walk);
-       return nbytes > len_this_page ? len_this_page : nbytes;
-}
-
-static inline void scatterwalk_advance(struct scatter_walk *walk,
-                                      unsigned int nbytes)
-{
-       walk->offset += nbytes;
-}
-
-static inline unsigned int scatterwalk_aligned(struct scatter_walk *walk,
-                                              unsigned int alignmask)
-{
-       return !(walk->offset & alignmask);
-}
-
-static inline struct page *scatterwalk_page(struct scatter_walk *walk)
-{
-       return sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT);
-}
-
-static inline void scatterwalk_unmap(void *vaddr, int out)
-{
-       crypto_kunmap(vaddr, out);
-}
-
-void scatterwalk_start(struct scatter_walk *walk, struct scatterlist *sg);
-void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
-                           size_t nbytes, int out);
-void *scatterwalk_map(struct scatter_walk *walk, int out);
-void scatterwalk_done(struct scatter_walk *walk, int out, int more);
-
-void scatterwalk_map_and_copy(void *buf, struct scatterlist *sg,
-                             unsigned int start, unsigned int nbytes, int out);
-
-#endif  /* _CRYPTO_SCATTERWALK_H */

diff --git a/crypto/xcbc.c b/crypto/xcbc.c
index ac68f3b62fde7c533cd1d1faf8c169c313864773..789cdeee6b7d65a0bac384d66f3e1233aca6880c 100644 (file)
--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -19,6 +19,7 @@
  *     Kazunori Miyazawa <miyazawa@linux-ipv6.org>
  */
 
+#include <crypto/scatterwalk.h>
 #include <linux/crypto.h>
 #include <linux/err.h>
 #include <linux/hardirq.h>
@@ -27,7 +28,6 @@
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
 #include <linux/scatterlist.h>
-#include "internal.h"
 
 static u_int32_t ks[12] = {0x01010101, 0x01010101, 0x01010101, 0x01010101,
                           0x02020202, 0x02020202, 0x02020202, 0x02020202,

diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h
new file mode 100644 (file)
index 0000000..07b6f17
--- /dev/null
+++ b/include/crypto/scatterwalk.h
@@ -0,0 +1,107 @@
+/*
+ * Cryptographic scatter and gather helpers.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * Copyright (c) 2002 Adam J. Richter <adam@yggdrasil.com>
+ * Copyright (c) 2004 Jean-Luc Cooke <jlcooke@certainkey.com>
+ * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#ifndef _CRYPTO_SCATTERWALK_H
+#define _CRYPTO_SCATTERWALK_H
+
+#include <asm/kmap_types.h>
+#include <crypto/algapi.h>
+#include <linux/hardirq.h>
+#include <linux/highmem.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+
+static inline enum km_type crypto_kmap_type(int out)
+{
+       enum km_type type;
+
+       if (in_softirq())
+               type = out * (KM_SOFTIRQ1 - KM_SOFTIRQ0) + KM_SOFTIRQ0;
+       else
+               type = out * (KM_USER1 - KM_USER0) + KM_USER0;
+
+       return type;
+}
+
+static inline void *crypto_kmap(struct page *page, int out)
+{
+       return kmap_atomic(page, crypto_kmap_type(out));
+}
+
+static inline void crypto_kunmap(void *vaddr, int out)
+{
+       kunmap_atomic(vaddr, crypto_kmap_type(out));
+}
+
+static inline void crypto_yield(u32 flags)
+{
+       if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
+               cond_resched();
+}
+
+static inline unsigned long scatterwalk_samebuf(struct scatter_walk *walk_in,
+                                               struct scatter_walk *walk_out)
+{
+       return !(((sg_page(walk_in->sg) - sg_page(walk_out->sg)) << PAGE_SHIFT) +
+                (int)(walk_in->offset - walk_out->offset));
+}
+
+static inline unsigned int scatterwalk_pagelen(struct scatter_walk *walk)
+{
+       unsigned int len = walk->sg->offset + walk->sg->length - walk->offset;
+       unsigned int len_this_page = offset_in_page(~walk->offset) + 1;
+       return len_this_page > len ? len : len_this_page;
+}
+
+static inline unsigned int scatterwalk_clamp(struct scatter_walk *walk,
+                                            unsigned int nbytes)
+{
+       unsigned int len_this_page = scatterwalk_pagelen(walk);
+       return nbytes > len_this_page ? len_this_page : nbytes;
+}
+
+static inline void scatterwalk_advance(struct scatter_walk *walk,
+                                      unsigned int nbytes)
+{
+       walk->offset += nbytes;
+}
+
+static inline unsigned int scatterwalk_aligned(struct scatter_walk *walk,
+                                              unsigned int alignmask)
+{
+       return !(walk->offset & alignmask);
+}
+
+static inline struct page *scatterwalk_page(struct scatter_walk *walk)
+{
+       return sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT);
+}
+
+static inline void scatterwalk_unmap(void *vaddr, int out)
+{
+       crypto_kunmap(vaddr, out);
+}
+
+void scatterwalk_start(struct scatter_walk *walk, struct scatterlist *sg);
+void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
+                           size_t nbytes, int out);
+void *scatterwalk_map(struct scatter_walk *walk, int out);
+void scatterwalk_done(struct scatter_walk *walk, int out, int more);
+
+void scatterwalk_map_and_copy(void *buf, struct scatterlist *sg,
+                             unsigned int start, unsigned int nbytes, int out);
+
+#endif  /* _CRYPTO_SCATTERWALK_H */