[PATCH 1/7] crypto: api - Add helpers to manage request flags

[Herbert Xu]

Add helpers so that the ON_STACK request flag management is not
duplicated all over the place.

Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
---
 include/crypto/algapi.h |  5 +++++
 include/linux/crypto.h  | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index ede622ecefa8..6999e10ea09e 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -272,4 +272,9 @@ static inline bool crypto_tfm_req_chain(struct crypto_tfm *tfm)
 	return tfm->__crt_alg->cra_flags & CRYPTO_ALG_REQ_CHAIN;
 }
 
+static inline u32 crypto_request_flags(struct crypto_async_request *req)
+{
+	return req->flags & ~CRYPTO_TFM_REQ_ON_STACK;
+}
+
 #endif	/* _CRYPTO_ALGAPI_H */
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index dd817f56ff0c..a387f1547ea0 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -476,5 +476,29 @@ static inline bool crypto_tfm_is_async(struct crypto_tfm *tfm)
 	return tfm->__crt_alg->cra_flags & CRYPTO_ALG_ASYNC;
 }
 
+static inline bool crypto_req_on_stack(struct crypto_async_request *req)
+{
+	return req->flags & CRYPTO_TFM_REQ_ON_STACK;
+}
+
+static inline void crypto_request_set_callback(
+	struct crypto_async_request *req, u32 flags,
+	crypto_completion_t compl, void *data)
+{
+	u32 keep = CRYPTO_TFM_REQ_ON_STACK;
+
+	req->complete = compl;
+	req->data = data;
+	req->flags &= keep;
+	req->flags |= flags & ~keep;
+}
+
+static inline void crypto_request_set_tfm(struct crypto_async_request *req,
+					  struct crypto_tfm *tfm)
+{
+	req->tfm = tfm;
+	req->flags &= ~CRYPTO_TFM_REQ_ON_STACK;
+}
+
 #endif	/* _LINUX_CRYPTO_H */
 
-- 
2.39.5