crypto: scomp - add support for deflate rfc1950 (zlib)
Add scomp backend for zlib-deflate compression algorithm. This backend outputs data using the format defined in rfc1950 (raw deflate surrounded by zlib header and footer). Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Giovanni Cabiddu
Herbert Xu
parent
3de4f5e1a5
commit
a368f43d6e
@ -43,20 +43,24 @@ struct deflate_ctx {
|
||||
struct z_stream_s decomp_stream;
|
||||
};
|
||||
|
||||
static int deflate_comp_init(struct deflate_ctx *ctx)
|
||||
static int deflate_comp_init(struct deflate_ctx *ctx, int format)
|
||||
{
|
||||
int ret = 0;
|
||||
struct z_stream_s *stream = &ctx->comp_stream;
|
||||
|
||||
stream->workspace = vzalloc(zlib_deflate_workspacesize(
|
||||
-DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL));
|
||||
MAX_WBITS, MAX_MEM_LEVEL));
|
||||
if (!stream->workspace) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
ret = zlib_deflateInit2(stream, DEFLATE_DEF_LEVEL, Z_DEFLATED,
|
||||
-DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL,
|
||||
Z_DEFAULT_STRATEGY);
|
||||
if (format)
|
||||
ret = zlib_deflateInit(stream, 3);
|
||||
else
|
||||
ret = zlib_deflateInit2(stream, DEFLATE_DEF_LEVEL, Z_DEFLATED,
|
||||
-DEFLATE_DEF_WINBITS,
|
||||
DEFLATE_DEF_MEMLEVEL,
|
||||
Z_DEFAULT_STRATEGY);
|
||||
if (ret != Z_OK) {
|
||||
ret = -EINVAL;
|
||||
goto out_free;
|
||||
@ -68,7 +72,7 @@ out_free:
|
||||
goto out;
|
||||
}
|
||||
|
||||
static int deflate_decomp_init(struct deflate_ctx *ctx)
|
||||
static int deflate_decomp_init(struct deflate_ctx *ctx, int format)
|
||||
{
|
||||
int ret = 0;
|
||||
struct z_stream_s *stream = &ctx->decomp_stream;
|
||||
@ -78,7 +82,10 @@ static int deflate_decomp_init(struct deflate_ctx *ctx)
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
ret = zlib_inflateInit2(stream, -DEFLATE_DEF_WINBITS);
|
||||
if (format)
|
||||
ret = zlib_inflateInit(stream);
|
||||
else
|
||||
ret = zlib_inflateInit2(stream, -DEFLATE_DEF_WINBITS);
|
||||
if (ret != Z_OK) {
|
||||
ret = -EINVAL;
|
||||
goto out_free;
|
||||
@ -102,21 +109,21 @@ static void deflate_decomp_exit(struct deflate_ctx *ctx)
|
||||
vfree(ctx->decomp_stream.workspace);
|
||||
}
|
||||
|
||||
static int __deflate_init(void *ctx)
|
||||
static int __deflate_init(void *ctx, int format)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = deflate_comp_init(ctx);
|
||||
ret = deflate_comp_init(ctx, format);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = deflate_decomp_init(ctx);
|
||||
ret = deflate_decomp_init(ctx, format);
|
||||
if (ret)
|
||||
deflate_comp_exit(ctx);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void *deflate_alloc_ctx(struct crypto_scomp *tfm)
|
||||
static void *gen_deflate_alloc_ctx(struct crypto_scomp *tfm, int format)
|
||||
{
|
||||
struct deflate_ctx *ctx;
|
||||
int ret;
|
||||
@ -125,7 +132,7 @@ static void *deflate_alloc_ctx(struct crypto_scomp *tfm)
|
||||
if (!ctx)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = __deflate_init(ctx);
|
||||
ret = __deflate_init(ctx, format);
|
||||
if (ret) {
|
||||
kfree(ctx);
|
||||
return ERR_PTR(ret);
|
||||
@ -134,11 +141,21 @@ static void *deflate_alloc_ctx(struct crypto_scomp *tfm)
|
||||
return ctx;
|
||||
}
|
||||
|
||||
static void *deflate_alloc_ctx(struct crypto_scomp *tfm)
|
||||
{
|
||||
return gen_deflate_alloc_ctx(tfm, 0);
|
||||
}
|
||||
|
||||
static void *zlib_deflate_alloc_ctx(struct crypto_scomp *tfm)
|
||||
{
|
||||
return gen_deflate_alloc_ctx(tfm, 1);
|
||||
}
|
||||
|
||||
static int deflate_init(struct crypto_tfm *tfm)
|
||||
{
|
||||
struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
|
||||
return __deflate_init(ctx);
|
||||
return __deflate_init(ctx, 0);
|
||||
}
|
||||
|
||||
static void __deflate_exit(void *ctx)
|
||||
@ -272,7 +289,7 @@ static struct crypto_alg alg = {
|
||||
.coa_decompress = deflate_decompress } }
|
||||
};
|
||||
|
||||
static struct scomp_alg scomp = {
|
||||
static struct scomp_alg scomp[] = { {
|
||||
.alloc_ctx = deflate_alloc_ctx,
|
||||
.free_ctx = deflate_free_ctx,
|
||||
.compress = deflate_scompress,
|
||||
@ -282,7 +299,17 @@ static struct scomp_alg scomp = {
|
||||
.cra_driver_name = "deflate-scomp",
|
||||
.cra_module = THIS_MODULE,
|
||||
}
|
||||
};
|
||||
}, {
|
||||
.alloc_ctx = zlib_deflate_alloc_ctx,
|
||||
.free_ctx = deflate_free_ctx,
|
||||
.compress = deflate_scompress,
|
||||
.decompress = deflate_sdecompress,
|
||||
.base = {
|
||||
.cra_name = "zlib-deflate",
|
||||
.cra_driver_name = "zlib-deflate-scomp",
|
||||
.cra_module = THIS_MODULE,
|
||||
}
|
||||
} };
|
||||
|
||||
static int __init deflate_mod_init(void)
|
||||
{
|
||||
@ -292,7 +319,7 @@ static int __init deflate_mod_init(void)
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = crypto_register_scomp(&scomp);
|
||||
ret = crypto_register_scomps(scomp, ARRAY_SIZE(scomp));
|
||||
if (ret) {
|
||||
crypto_unregister_alg(&alg);
|
||||
return ret;
|
||||
@ -304,7 +331,7 @@ static int __init deflate_mod_init(void)
|
||||
static void __exit deflate_mod_fini(void)
|
||||
{
|
||||
crypto_unregister_alg(&alg);
|
||||
crypto_unregister_scomp(&scomp);
|
||||
crypto_unregister_scomps(scomp, ARRAY_SIZE(scomp));
|
||||
}
|
||||
|
||||
module_init(deflate_mod_init);
|
||||
|
||||
@ -3513,6 +3513,16 @@ static const struct alg_test_desc alg_test_descs[] = {
|
||||
.dec = __VECS(tf_xts_dec_tv_template)
|
||||
}
|
||||
}
|
||||
}, {
|
||||
.alg = "zlib-deflate",
|
||||
.test = alg_test_comp,
|
||||
.fips_allowed = 1,
|
||||
.suite = {
|
||||
.comp = {
|
||||
.comp = __VECS(zlib_deflate_comp_tv_template),
|
||||
.decomp = __VECS(zlib_deflate_decomp_tv_template)
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
@ -33204,6 +33204,81 @@ static const struct comp_testvec deflate_decomp_tv_template[] = {
|
||||
},
|
||||
};
|
||||
|
||||
static const struct comp_testvec zlib_deflate_comp_tv_template[] = {
|
||||
{
|
||||
.inlen = 70,
|
||||
.outlen = 44,
|
||||
.input = "Join us now and share the software "
|
||||
"Join us now and share the software ",
|
||||
.output = "\x78\x5e\xf3\xca\xcf\xcc\x53\x28"
|
||||
"\x2d\x56\xc8\xcb\x2f\x57\x48\xcc"
|
||||
"\x4b\x51\x28\xce\x48\x2c\x4a\x55"
|
||||
"\x28\xc9\x48\x55\x28\xce\x4f\x2b"
|
||||
"\x29\x07\x71\xbc\x08\x2b\x01\x00"
|
||||
"\x7c\x65\x19\x3d",
|
||||
}, {
|
||||
.inlen = 191,
|
||||
.outlen = 129,
|
||||
.input = "This document describes a compression method based on the DEFLATE"
|
||||
"compression algorithm. This document defines the application of "
|
||||
"the DEFLATE algorithm to the IP Payload Compression Protocol.",
|
||||
.output = "\x78\x5e\x5d\xce\x41\x0a\xc3\x30"
|
||||
"\x0c\x04\xc0\xaf\xec\x0b\xf2\x87"
|
||||
"\xd2\xa6\x50\xe8\xc1\x07\x7f\x40"
|
||||
"\xb1\x95\x5a\x60\x5b\xc6\x56\x0f"
|
||||
"\xfd\x7d\x93\x1e\x42\xe8\x51\xec"
|
||||
"\xee\x20\x9f\x64\x20\x6a\x78\x17"
|
||||
"\xae\x86\xc8\x23\x74\x59\x78\x80"
|
||||
"\x10\xb4\xb4\xce\x63\x88\x56\x14"
|
||||
"\xb6\xa4\x11\x0b\x0d\x8e\xd8\x6e"
|
||||
"\x4b\x8c\xdb\x7c\x7f\x5e\xfc\x7c"
|
||||
"\xae\x51\x7e\x69\x17\x4b\x65\x02"
|
||||
"\xfc\x1f\xbc\x4a\xdd\xd8\x7d\x48"
|
||||
"\xad\x65\x09\x64\x3b\xac\xeb\xd9"
|
||||
"\xc2\x01\xc0\xf4\x17\x3c\x1c\x1c"
|
||||
"\x7d\xb2\x52\xc4\xf5\xf4\x8f\xeb"
|
||||
"\x6a\x1a\x34\x4f\x5f\x2e\x32\x45"
|
||||
"\x4e",
|
||||
},
|
||||
};
|
||||
|
||||
static const struct comp_testvec zlib_deflate_decomp_tv_template[] = {
|
||||
{
|
||||
.inlen = 128,
|
||||
.outlen = 191,
|
||||
.input = "\x78\x9c\x5d\x8d\x31\x0e\xc2\x30"
|
||||
"\x10\x04\xbf\xb2\x2f\xc8\x1f\x10"
|
||||
"\x04\x09\x89\xc2\x85\x3f\x70\xb1"
|
||||
"\x2f\xf8\x24\xdb\x67\xd9\x47\xc1"
|
||||
"\xef\x49\x68\x12\x51\xae\x76\x67"
|
||||
"\xd6\x27\x19\x88\x1a\xde\x85\xab"
|
||||
"\x21\xf2\x08\x5d\x16\x1e\x20\x04"
|
||||
"\x2d\xad\xf3\x18\xa2\x15\x85\x2d"
|
||||
"\x69\xc4\x42\x83\x23\xb6\x6c\x89"
|
||||
"\x71\x9b\xef\xcf\x8b\x9f\xcf\x33"
|
||||
"\xca\x2f\xed\x62\xa9\x4c\x80\xff"
|
||||
"\x13\xaf\x52\x37\xed\x0e\x52\x6b"
|
||||
"\x59\x02\xd9\x4e\xe8\x7a\x76\x1d"
|
||||
"\x02\x98\xfe\x8a\x87\x83\xa3\x4f"
|
||||
"\x56\x8a\xb8\x9e\x8e\x5c\x57\xd3"
|
||||
"\xa0\x79\xfa\x02\x2e\x32\x45\x4e",
|
||||
.output = "This document describes a compression method based on the DEFLATE"
|
||||
"compression algorithm. This document defines the application of "
|
||||
"the DEFLATE algorithm to the IP Payload Compression Protocol.",
|
||||
}, {
|
||||
.inlen = 44,
|
||||
.outlen = 70,
|
||||
.input = "\x78\x9c\xf3\xca\xcf\xcc\x53\x28"
|
||||
"\x2d\x56\xc8\xcb\x2f\x57\x48\xcc"
|
||||
"\x4b\x51\x28\xce\x48\x2c\x4a\x55"
|
||||
"\x28\xc9\x48\x55\x28\xce\x4f\x2b"
|
||||
"\x29\x07\x71\xbc\x08\x2b\x01\x00"
|
||||
"\x7c\x65\x19\x3d",
|
||||
.output = "Join us now and share the software "
|
||||
"Join us now and share the software ",
|
||||
},
|
||||
};
|
||||
|
||||
/*
|
||||
* LZO test vectors (null-terminated strings).
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user