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-rw-r--r--include/crypto/algapi.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index f21ae672e8a..f3946baf0c0 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -55,6 +55,34 @@ struct scatter_walk {
unsigned int offset;
};
+struct blkcipher_walk {
+ union {
+ struct {
+ struct page *page;
+ unsigned long offset;
+ } phys;
+
+ struct {
+ u8 *page;
+ u8 *addr;
+ } virt;
+ } src, dst;
+
+ struct scatter_walk in;
+ unsigned int nbytes;
+
+ struct scatter_walk out;
+ unsigned int total;
+
+ void *page;
+ u8 *buffer;
+ u8 *iv;
+
+ int flags;
+};
+
+extern const struct crypto_type crypto_blkcipher_type;
+
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);
@@ -69,15 +97,52 @@ struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
struct crypto_instance *crypto_alloc_instance(const char *name,
struct crypto_alg *alg);
+int blkcipher_walk_done(struct blkcipher_desc *desc,
+ struct blkcipher_walk *walk, int err);
+int blkcipher_walk_virt(struct blkcipher_desc *desc,
+ struct blkcipher_walk *walk);
+int blkcipher_walk_phys(struct blkcipher_desc *desc,
+ struct blkcipher_walk *walk);
+
+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);
+}
+
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
return inst->__ctx;
}
+static inline void *crypto_blkcipher_ctx(struct crypto_blkcipher *tfm)
+{
+ return crypto_tfm_ctx(&tfm->base);
+}
+
+static inline void *crypto_blkcipher_ctx_aligned(struct crypto_blkcipher *tfm)
+{
+ return crypto_tfm_ctx_aligned(&tfm->base);
+}
+
static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
{
return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
}
+static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
+ struct scatterlist *dst,
+ struct scatterlist *src,
+ unsigned int nbytes)
+{
+ walk->in.sg = src;
+ walk->out.sg = dst;
+ walk->total = nbytes;
+}
+
#endif /* _CRYPTO_ALGAPI_H */