1 files changed, 84 insertions, 49 deletions

diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
index cb3d6b1c655d..574cffc90730 100644
--- a/include/crypto/acompress.h
+++ b/include/crypto/acompress.h
@@ -8,9 +8,13 @@
  */
 #ifndef _CRYPTO_ACOMP_H
 #define _CRYPTO_ACOMP_H
+
+#include <linux/atomic.h>
+#include <linux/container_of.h>
 #include <linux/crypto.h>
 
 #define CRYPTO_ACOMP_ALLOC_OUTPUT	0x00000001
+#define CRYPTO_ACOMP_DST_MAX		131072
 
 /**
  * struct acomp_req - asynchronous (de)compression request
@@ -52,37 +56,35 @@ struct crypto_acomp {
 	struct crypto_tfm base;
 };
 
-/**
- * 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
- * @base:	Common crypto API algorithm data structure
+/*
+ * struct crypto_istat_compress - statistics for compress algorithm
+ * @compress_cnt:	number of compress requests
+ * @compress_tlen:	total data size handled by compress requests
+ * @decompress_cnt:	number of decompress requests
+ * @decompress_tlen:	total data size handled by decompress requests
+ * @err_cnt:		number of error for compress requests
  */
-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;
-	struct crypto_alg base;
+struct crypto_istat_compress {
+	atomic64_t compress_cnt;
+	atomic64_t compress_tlen;
+	atomic64_t decompress_cnt;
+	atomic64_t decompress_tlen;
+	atomic64_t err_cnt;
 };
 
+#ifdef CONFIG_CRYPTO_STATS
+#define COMP_ALG_COMMON_STATS struct crypto_istat_compress stat;
+#else
+#define COMP_ALG_COMMON_STATS
+#endif
+
+#define COMP_ALG_COMMON {			\
+	COMP_ALG_COMMON_STATS			\
+						\
+	struct crypto_alg base;			\
+}
+struct comp_alg_common COMP_ALG_COMMON;
+
 /**
  * DOC: Asynchronous Compression API
  *
@@ -130,9 +132,10 @@ static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm)
 	return &tfm->base;
 }
 
-static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
+static inline struct comp_alg_common *__crypto_comp_alg_common(
+	struct crypto_alg *alg)
 {
-	return container_of(alg, struct acomp_alg, base);
+	return container_of(alg, struct comp_alg_common, base);
 }
 
 static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
@@ -140,9 +143,10 @@ static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
 	return container_of(tfm, struct crypto_acomp, base);
 }
 
-static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
+static inline struct comp_alg_common *crypto_comp_alg_common(
+	struct crypto_acomp *tfm)
 {
-	return __crypto_acomp_alg(crypto_acomp_tfm(tfm)->__crt_alg);
+	return __crypto_comp_alg_common(crypto_acomp_tfm(tfm)->__crt_alg);
 }
 
 static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
@@ -218,7 +222,8 @@ static inline void acomp_request_set_callback(struct acomp_req *req,
 {
 	req->base.complete = cmpl;
 	req->base.data = data;
-	req->base.flags = flgs;
+	req->base.flags &= CRYPTO_ACOMP_ALLOC_OUTPUT;
+	req->base.flags |= flgs & ~CRYPTO_ACOMP_ALLOC_OUTPUT;
 }
 
 /**
@@ -245,10 +250,32 @@ static inline void acomp_request_set_params(struct acomp_req *req,
 	req->slen = slen;
 	req->dlen = dlen;
 
+	req->flags &= ~CRYPTO_ACOMP_ALLOC_OUTPUT;
 	if (!req->dst)
 		req->flags |= CRYPTO_ACOMP_ALLOC_OUTPUT;
 }
 
+static inline struct crypto_istat_compress *comp_get_stat(
+	struct comp_alg_common *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_comp_errstat(struct comp_alg_common *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&comp_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /**
  * crypto_acomp_compress() -- Invoke asynchronous compress operation
  *
@@ -261,14 +288,18 @@ static inline void acomp_request_set_params(struct acomp_req *req,
 static inline int crypto_acomp_compress(struct acomp_req *req)
 {
 	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
-	struct crypto_alg *alg = tfm->base.__crt_alg;
-	unsigned int slen = req->slen;
-	int ret;
-
-	crypto_stats_get(alg);
-	ret = tfm->compress(req);
-	crypto_stats_compress(slen, ret, alg);
-	return ret;
+	struct comp_alg_common *alg;
+
+	alg = crypto_comp_alg_common(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_compress *istat = comp_get_stat(alg);
+
+		atomic64_inc(&istat->compress_cnt);
+		atomic64_add(req->slen, &istat->compress_tlen);
+	}
+
+	return crypto_comp_errstat(alg, tfm->compress(req));
 }
 
 /**
@@ -283,14 +314,18 @@ static inline int crypto_acomp_compress(struct acomp_req *req)
 static inline int crypto_acomp_decompress(struct acomp_req *req)
 {
 	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
-	struct crypto_alg *alg = tfm->base.__crt_alg;
-	unsigned int slen = req->slen;
-	int ret;
-
-	crypto_stats_get(alg);
-	ret = tfm->decompress(req);
-	crypto_stats_decompress(slen, ret, alg);
-	return ret;
+	struct comp_alg_common *alg;
+
+	alg = crypto_comp_alg_common(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_compress *istat = comp_get_stat(alg);
+
+		atomic64_inc(&istat->decompress_cnt);
+		atomic64_add(req->slen, &istat->decompress_tlen);
+	}
+
+	return crypto_comp_errstat(alg, tfm->decompress(req));
 }
 
 #endif