diff options
Diffstat (limited to 'include/crypto/scatterwalk.h')
| -rw-r--r-- | include/crypto/scatterwalk.h | 65 |
1 files changed, 63 insertions, 2 deletions
diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h index 94a8585f26b2..15ab743f68c8 100644 --- a/include/crypto/scatterwalk.h +++ b/include/crypto/scatterwalk.h @@ -11,11 +11,64 @@ #ifndef _CRYPTO_SCATTERWALK_H #define _CRYPTO_SCATTERWALK_H -#include <crypto/algapi.h> - +#include <linux/errno.h> #include <linux/highmem.h> #include <linux/mm.h> #include <linux/scatterlist.h> +#include <linux/types.h> + +struct scatter_walk { + /* Must be the first member, see struct skcipher_walk. */ + union { + void *const addr; + + /* Private API field, do not touch. */ + union crypto_no_such_thing *__addr; + }; + struct scatterlist *sg; + unsigned int offset; +}; + +struct skcipher_walk { + union { + /* Virtual address of the source. */ + struct { + struct { + const void *const addr; + } virt; + } src; + + /* Private field for the API, do not use. */ + struct scatter_walk in; + }; + + union { + /* Virtual address of the destination. */ + struct { + struct { + void *const addr; + } virt; + } dst; + + /* Private field for the API, do not use. */ + struct scatter_walk out; + }; + + unsigned int nbytes; + unsigned int total; + + u8 *page; + u8 *buffer; + u8 *oiv; + void *iv; + + unsigned int ivsize; + + int flags; + unsigned int blocksize; + unsigned int stride; + unsigned int alignmask; +}; static inline void scatterwalk_crypto_chain(struct scatterlist *head, struct scatterlist *sg, int num) @@ -243,4 +296,12 @@ struct scatterlist *scatterwalk_ffwd(struct scatterlist dst[2], struct scatterlist *src, unsigned int len); +int skcipher_walk_first(struct skcipher_walk *walk, bool atomic); +int skcipher_walk_done(struct skcipher_walk *walk, int res); + +static inline void skcipher_walk_abort(struct skcipher_walk *walk) +{ + skcipher_walk_done(walk, -ECANCELED); +} + #endif /* _CRYPTO_SCATTERWALK_H */ |