From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 7 Apr 2025 10:02:51 +0000 (+0800)
Subject: crypto: api - Add helpers to manage request flags
X-Git-Tag: block-6.16-20250606~34^2~305
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=1451e3e561be9ff4e86b911b9367a2223275d16f;p=linux-block.git

crypto: api - Add helpers to manage request flags

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

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

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 */