Messages in this thread Patch in this message | | | Date | Thu, 27 Aug 2015 10:57:30 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [PATCH v2 4/8] crypto/lz4hc: support decompress_noctx |
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On (08/20/15 15:35), Joonsoo Kim wrote: > > lz4hc'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/lz4hc.c | 17 ++++++++++++++++- > 1 file changed, 16 insertions(+), 1 deletion(-) > > diff --git a/crypto/lz4hc.c b/crypto/lz4hc.c > index bcf0baa..a529620 100644 > --- a/crypto/lz4hc.c > +++ b/crypto/lz4hc.c > @@ -76,6 +76,21 @@ static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, > return err; > } > > +static int lz4hc_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 lz4hc_decompress_noctx(const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { return lz4hc_decompress_crypto(NULL, ....); }
?
-ss
> static struct crypto_alg alg_lz4hc = { > .cra_name = "lz4hc", > .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, > @@ -88,7 +103,7 @@ static struct crypto_alg alg_lz4hc = { > .coa_compress = lz4hc_compress_crypto, > .coa_decompress = lz4hc_decompress_crypto, > .coa_compress_noctx = NULL, > - .coa_decompress_noctx = NULL } } > + .coa_decompress_noctx = lz4hc_decompress_noctx } } > }; > > static int __init lz4hc_mod_init(void) > -- > 1.9.1 >
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