[PATCH 2/7] crypto: acomp - Use request flag helpers and add acomp_request_flags

[Herbert Xu]

Use the newly added request flag helpers to manage the request
flags.

Also add acomp_request_flags which lets bottom-level users to
access the request flags without the bits private to the acomp
API.

Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
---
 include/crypto/acompress.h          | 27 ++++++++++++++++-----------
 include/crypto/internal/acompress.h |  6 ++++++
 2 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
index 080e134df35c..f383a4008854 100644
--- a/include/crypto/acompress.h
+++ b/include/crypto/acompress.h
@@ -38,6 +38,12 @@
 /* Set this bit if destination is a folio. */
 #define CRYPTO_ACOMP_REQ_DST_FOLIO	0x00000040
 
+/* Private flags that should not be touched by the user. */
+#define CRYPTO_ACOMP_REQ_PRIVATE \
+	(CRYPTO_ACOMP_REQ_SRC_VIRT | CRYPTO_ACOMP_REQ_SRC_NONDMA | \
+	 CRYPTO_ACOMP_REQ_DST_VIRT | CRYPTO_ACOMP_REQ_DST_NONDMA | \
+	 CRYPTO_ACOMP_REQ_SRC_FOLIO | CRYPTO_ACOMP_REQ_DST_FOLIO)
+
 #define CRYPTO_ACOMP_DST_MAX		131072
 
 #define	MAX_SYNC_COMP_REQSIZE		0
@@ -201,7 +207,7 @@ static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
 static inline void acomp_request_set_tfm(struct acomp_req *req,
 					 struct crypto_acomp *tfm)
 {
-	req->base.tfm = crypto_acomp_tfm(tfm);
+	crypto_request_set_tfm(&req->base, crypto_acomp_tfm(tfm));
 }
 
 static inline bool acomp_is_async(struct crypto_acomp *tfm)
@@ -298,6 +304,11 @@ static inline void *acomp_request_extra(struct acomp_req *req)
 	return (void *)((char *)req + len);
 }
 
+static inline bool acomp_req_on_stack(struct acomp_req *req)
+{
+	return crypto_req_on_stack(&req->base);
+}
+
 /**
  * acomp_request_free() -- zeroize and free asynchronous (de)compression
  *			   request as well as the output buffer if allocated
@@ -307,7 +318,7 @@ static inline void *acomp_request_extra(struct acomp_req *req)
  */
 static inline void acomp_request_free(struct acomp_req *req)
 {
-	if (!req || (req->base.flags & CRYPTO_TFM_REQ_ON_STACK))
+	if (!req || acomp_req_on_stack(req))
 		return;
 	kfree_sensitive(req);
 }
@@ -328,15 +339,9 @@ static inline void acomp_request_set_callback(struct acomp_req *req,
 					      crypto_completion_t cmpl,
 					      void *data)
 {
-	u32 keep = CRYPTO_ACOMP_REQ_SRC_VIRT | CRYPTO_ACOMP_REQ_SRC_NONDMA |
-		   CRYPTO_ACOMP_REQ_DST_VIRT | CRYPTO_ACOMP_REQ_DST_NONDMA |
-		   CRYPTO_ACOMP_REQ_SRC_FOLIO | CRYPTO_ACOMP_REQ_DST_FOLIO |
-		   CRYPTO_TFM_REQ_ON_STACK;
-
-	req->base.complete = cmpl;
-	req->base.data = data;
-	req->base.flags &= keep;
-	req->base.flags |= flgs & ~keep;
+	flgs &= ~CRYPTO_ACOMP_REQ_PRIVATE;
+	flgs |= req->base.flags & CRYPTO_ACOMP_REQ_PRIVATE;
+	crypto_request_set_callback(&req->base, flgs, cmpl, data);
 }
 
 /**
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index 960cdd1f3a57..5483ca5b46ad 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -229,4 +229,10 @@ static inline bool acomp_walk_more_src(const struct acomp_walk *walk, int cur)
 {
 	return walk->slen != cur;
 }
+
+static inline u32 acomp_request_flags(struct acomp_req *req)
+{
+	return crypto_request_flags(&req->base) & ~CRYPTO_ACOMP_REQ_PRIVATE;
+}
+
 #endif
-- 
2.39.5