| Message ID | 1440052504-15442-4-git-send-email-iamjoonsoo.kim@lge.com (mailing list archive) |
|---|---|
| State | Rejected |
| Delegated to: | Herbert Xu |
| Headers | show |
On (08/20/15 15:34), Joonsoo Kim wrote: > lz4's decompression doesn't requires any scratch buffer so > it doesn't need tfm context. Hence, it can support > crypto compression noctx API and this patch implements it. > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> > --- > crypto/lz4.c | 17 ++++++++++++++++- > 1 file changed, 16 insertions(+), 1 deletion(-) > > diff --git a/crypto/lz4.c b/crypto/lz4.c > index 1848435..aa23da3 100644 > --- a/crypto/lz4.c > +++ b/crypto/lz4.c > @@ -76,6 +76,21 @@ static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, > return err; > } > > +static int lz4_decompress_noctx(const u8 *src, unsigned int slen, > + u8 *dst, unsigned int *dlen) > +{ > + int err; > + size_t tmp_len = *dlen; > + size_t __slen = slen; > + > + err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len); > + if (err < 0) > + return -EINVAL; > + > + *dlen = tmp_len; > + return err; > +} > + same, static int lz4_decompress_noctx(const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { return lz4_decompress_crypto(NULL, ....); } ? > static struct crypto_alg alg_lz4 = { > .cra_name = "lz4", > .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, > @@ -88,7 +103,7 @@ static struct crypto_alg alg_lz4 = { > .coa_compress = lz4_compress_crypto, > .coa_decompress = lz4_decompress_crypto, > .coa_compress_noctx = NULL, > - .coa_decompress_noctx = NULL } } > + .coa_decompress_noctx = lz4_decompress_noctx } } > }; > > static int __init lz4_mod_init(void) > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/crypto/lz4.c b/crypto/lz4.c index 1848435..aa23da3 100644 --- a/crypto/lz4.c +++ b/crypto/lz4.c @@ -76,6 +76,21 @@ static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, return err; } +static int lz4_decompress_noctx(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + int err; + size_t tmp_len = *dlen; + size_t __slen = slen; + + err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len); + if (err < 0) + return -EINVAL; + + *dlen = tmp_len; + return err; +} + static struct crypto_alg alg_lz4 = { .cra_name = "lz4", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -88,7 +103,7 @@ static struct crypto_alg alg_lz4 = { .coa_compress = lz4_compress_crypto, .coa_decompress = lz4_decompress_crypto, .coa_compress_noctx = NULL, - .coa_decompress_noctx = NULL } } + .coa_decompress_noctx = lz4_decompress_noctx } } }; static int __init lz4_mod_init(void)
lz4's decompression doesn't requires any scratch buffer so it doesn't need tfm context. Hence, it can support crypto compression noctx API and this patch implements it. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> --- crypto/lz4.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)