diff options
author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-12-07 13:52:49 +0300 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-01-11 00:16:32 +0300 |
commit | 42c271c6c538857cb13c5ead5184d264d745f675 (patch) | |
tree | 9f6a05c756be3fc3f35ae7fe9b333a33986a2f56 /crypto/scatterwalk.h | |
parent | fe70f5dfe1a7b5caab96531089dac3d8728c0ebd (diff) | |
download | linux-42c271c6c538857cb13c5ead5184d264d745f675.tar.xz |
[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>
Diffstat (limited to 'crypto/scatterwalk.h')
-rw-r--r-- | crypto/scatterwalk.h | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/crypto/scatterwalk.h b/crypto/scatterwalk.h deleted file mode 100644 index fd5517d2a7a9..000000000000 --- 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 */ |