crypto: acomp - Count error stats differently

Move all stat code specific to acomp into the acomp code.

While we're at it, change the stats so that bytes and counts
are always incremented even in case of error.  This allows the
reference counting to be removed as we can now increment the
counters prior to the operation.

After the operation we simply increase the error count if necessary.
This is safe as errors can only occur synchronously (or rather,
the existing code already ignored asynchronous errors which are
only visible to the callback function).

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

1 files changed, 38 insertions, 5 deletions

diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index 978b57a3f4f0..4ac46bafba9d 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -12,6 +12,44 @@
 #include <crypto/acompress.h>
 #include <crypto/algapi.h>
 
+/**
+ * struct acomp_alg - asynchronous compression algorithm
+ *
+ * @compress:	Function performs a compress operation
+ * @decompress:	Function performs a de-compress operation
+ * @dst_free:	Frees destination buffer if allocated inside the algorithm
+ * @init:	Initialize the cryptographic transformation object.
+ *		This function is used to initialize the cryptographic
+ *		transformation object. This function is called only once at
+ *		the instantiation time, right after the transformation context
+ *		was allocated. In case the cryptographic hardware has some
+ *		special requirements which need to be handled by software, this
+ *		function shall check for the precise requirement of the
+ *		transformation and put any software fallbacks in place.
+ * @exit:	Deinitialize the cryptographic transformation object. This is a
+ *		counterpart to @init, used to remove various changes set in
+ *		@init.
+ *
+ * @reqsize:	Context size for (de)compression requests
+ * @stat:	Statistics for compress algorithm
+ * @base:	Common crypto API algorithm data structure
+ * @calg:	Cmonn algorithm data structure shared with scomp
+ */
+struct acomp_alg {
+	int (*compress)(struct acomp_req *req);
+	int (*decompress)(struct acomp_req *req);
+	void (*dst_free)(struct scatterlist *dst);
+	int (*init)(struct crypto_acomp *tfm);
+	void (*exit)(struct crypto_acomp *tfm);
+
+	unsigned int reqsize;
+
+	union {
+		struct COMP_ALG_COMMON;
+		struct comp_alg_common calg;
+	};
+};
+
 /*
  * Transform internal helpers.
  */
@@ -31,11 +69,6 @@ static inline void acomp_request_complete(struct acomp_req *req,
 	crypto_request_complete(&req->base, err);
 }
 
-static inline const char *acomp_alg_name(struct crypto_acomp *tfm)
-{
-	return crypto_acomp_tfm(tfm)->__crt_alg->cra_name;
-}
-
 static inline struct acomp_req *__acomp_request_alloc(struct crypto_acomp *tfm)
 {
 	struct acomp_req *req;