[PATCH RFC 6/7] crypto/compress: add algorithm type specific flag, DECOMP_NOCTX
From: Joonsoo Kim <hidden>
Date: 2016-01-04 04:48:26
Also in:
lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
Signed-off-by: Joonsoo Kim <redacted> --- crypto/testmgr.c | 2 ++ include/crypto/compress.h | 8 ++++++++ include/linux/crypto.h | 6 ++++++ 3 files changed, 16 insertions(+)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index bd0c639..acd7428 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c@@ -1289,6 +1289,8 @@ static int test_comp(struct crypto_tfm *tfm, void *ctx, int type, break; case 1: + if (crypto_scomp_decomp_noctx(crypto_scomp_cast(tfm))) + ctx = NULL; ret = crypto_scomp_decompress(crypto_scomp_cast(tfm), dtemplate[i].input, ilen, result, &dlen, ctx);
diff --git a/include/crypto/compress.h b/include/crypto/compress.h
index f1e91c5..21c698e 100644
--- a/include/crypto/compress.h
+++ b/include/crypto/compress.h@@ -2,6 +2,8 @@ #define _CRYPTO_COMPRESS_H #include <linux/crypto.h> +#define CRYPTO_ALG_SCOMPRESS_DECOMP_NOCTX CRYPTO_ALG_PRIVATE + struct crypto_scomp { struct crypto_tfm base; };
@@ -71,6 +73,12 @@ static inline int crypto_scomp_decompress(struct crypto_scomp *tfm, dst, dlen, ctx); } +static inline bool crypto_scomp_decomp_noctx(struct crypto_scomp *tfm) +{ + return crypto_scomp_tfm(tfm)->__crt_alg->cra_flags & + CRYPTO_ALG_SCOMPRESS_DECOMP_NOCTX; +} + extern int crypto_register_scomp(struct scomp_alg *alg); extern int crypto_unregister_scomp(struct scomp_alg *alg);
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 86baa61..a8a522c 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h@@ -104,6 +104,12 @@ #define CRYPTO_ALG_INTERNAL 0x00002000 /* + * Use this flag as type specific one. For example, it would be used + * to check if context is needed or not in CRYPTO_ALG_TYPE_SCOMPRESS. + */ +#define CRYPTO_ALG_PRIVATE 0x00004000 + +/* * Transform masks and values (for crt_flags). */ #define CRYPTO_TFM_REQ_MASK 0x000fff00
--
1.9.1