[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 <[email protected]>
---
crypto/authenc.c | 3 -
crypto/blkcipher.c | 2
crypto/digest.c | 3 -
crypto/gcm.c | 3 -
crypto/internal.h | 29 -----------
crypto/scatterwalk.c | 5 --
crypto/scatterwalk.h | 75 ------------------------------
crypto/xcbc.c | 2
include/crypto/scatterwalk.h | 107 +++++++++++++++++++++++++++++++++++++++++++
9 files changed, 114 insertions(+), 115 deletions(-)
diff --git a/crypto/authenc.c b/crypto/authenc.c
index 6c9104e..fbbc2b5 100644
--- 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 180d914..7939504 100644
--- 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 d3e827a..52845f5 100644
--- 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 d60c340..67cd067 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -10,14 +10,13 @@
#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"
-
struct gcm_instance_ctx {
struct crypto_spawn ctr;
};
diff --git a/crypto/internal.h b/crypto/internal.h
index abb01f7..cb13952 100644
--- 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 206c39a..12d1901 100644
--- 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
index fd5517d..0000000
--- a/crypto/scatterwalk.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Copyright (c) 2002 James Morris <[email protected]>
- * Copyright (c) 2002 Adam J. Richter <[email protected]>
- * Copyright (c) 2004 Jean-Luc Cooke <[email protected]>
- *
- * 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 ac68f3b..789cdee 100644
--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -19,6 +19,7 @@
* Kazunori Miyazawa <[email protected]>
*/
+#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
index 0000000..07b6f17
--- /dev/null
+++ b/include/crypto/scatterwalk.h
@@ -0,0 +1,107 @@
+/*
+ * Cryptographic scatter and gather helpers.
+ *
+ * Copyright (c) 2002 James Morris <[email protected]>
+ * Copyright (c) 2002 Adam J. Richter <[email protected]>
+ * Copyright (c) 2004 Jean-Luc Cooke <[email protected]>
+ * Copyright (c) 2007 Herbert Xu <[email protected]>
+ *
+ * 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 */