| Message ID | 1440052504-15442-3-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: > lzo'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/lzo.c | 18 +++++++++++++++++- > 1 file changed, 17 insertions(+), 1 deletion(-) > > diff --git a/crypto/lzo.c b/crypto/lzo.c > index 9ca516b..f1844dd 100644 > --- a/crypto/lzo.c > +++ b/crypto/lzo.c > @@ -80,6 +80,22 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src, > > } > > +static int lzo_decompress_noctx(const u8 *src, unsigned int slen, > + u8 *dst, unsigned int *dlen) > +{ > + int err; > + size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */ > + > + err = lzo1x_decompress_safe(src, slen, dst, &tmp_len); > + > + if (err != LZO_E_OK) > + return -EINVAL; > + > + *dlen = tmp_len; > + return 0; > + just do static int lzo_decompress_noctx(const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { return lzo_decompress(NULL, src, len, dst, dlen); } ? -ss > +} > + > static struct crypto_alg alg = { > .cra_name = "lzo", > .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, > @@ -91,7 +107,7 @@ static struct crypto_alg alg = { > .coa_compress = lzo_compress, > .coa_decompress = lzo_decompress, > .coa_compress_noctx = NULL, > - .coa_decompress_noctx = NULL } } > + .coa_decompress_noctx = lzo_decompress_noctx } } > }; > > static int __init lzo_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/lzo.c b/crypto/lzo.c index 9ca516b..f1844dd 100644 --- a/crypto/lzo.c +++ b/crypto/lzo.c @@ -80,6 +80,22 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src, } +static int lzo_decompress_noctx(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + int err; + size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */ + + err = lzo1x_decompress_safe(src, slen, dst, &tmp_len); + + if (err != LZO_E_OK) + return -EINVAL; + + *dlen = tmp_len; + return 0; + +} + static struct crypto_alg alg = { .cra_name = "lzo", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -91,7 +107,7 @@ static struct crypto_alg alg = { .coa_compress = lzo_compress, .coa_decompress = lzo_decompress, .coa_compress_noctx = NULL, - .coa_decompress_noctx = NULL } } + .coa_decompress_noctx = lzo_decompress_noctx } } }; static int __init lzo_mod_init(void)
lzo'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/lzo.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)