diff mbox series

[v2,2/6] crypto: crc64 - add crc64-iso framework

Message ID 20230719-mcrc-upstream-v2-2-4152b987e4c2@ti.com
State New
Headers
Series Add support for Texas Instruments MCRC64 engine |

Commit Message

Kamlesh Gurudasani Aug. 10, 2023, 7:28 p.m. UTC 
  Hardware specific features may be able to calculate a crc64-iso, so provide
a framework for drivers to register their implementation. If nothing is
registered, fallback to the generic table lookup implementation. The
implementation is modeled after the crc64-rocksoft equivalent

Add testmgr, tcrypt tests and vectors for 64-bit cyclic
redundancy checks (CRC) according to the ISO 3309 standard.

The ISO 3309 64-bit CRC model parameters are as follows:
    Generator Polynomial: x^64 + x^4 + x^3 + x + 1
    Polynomial Value: 0x000000000000001B
    Initial value: 0x0000000000000000
    Reflected Input: False
    Reflected Output: False
    Xor Final: 0x0000000000000000

Signed-off-by: Kamlesh Gurudasani <kamlesh@ti.com>
---
 crypto/Kconfig             |  11 +++
 crypto/Makefile            |   1 +
 crypto/crc64_iso_generic.c | 119 ++++++++++++++++++++++++++++
 crypto/tcrypt.c            |   5 ++
 crypto/testmgr.c           |   7 ++
 crypto/testmgr.h           | 404 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/crc64.h      |   4 +
 lib/crc64-iso.c            | 126 ++++++++++++++++++++++++++++++
 8 files changed, 677 insertions(+)

Comments

Eric Biggers Aug. 11, 2023, 4:24 a.m. UTC | #1 
On Fri, Aug 11, 2023 at 12:58:49AM +0530, Kamlesh Gurudasani wrote:
> diff --git a/lib/crc64-iso.c b/lib/crc64-iso.c
> new file mode 100644
> index 000000000000..d6e803124fa0
[...]
> +u64 crc64_iso_update(u64 crc, const unsigned char *buffer, size_t len)
> +{
> +	struct {
> +		struct shash_desc shash;
> +		u64 crc;
> +	} desc;
> +	int err;
> +
> +	if (static_branch_unlikely(&crc64_iso_fallback))
> +		return crc64_iso_generic(crc, buffer, len);
> +
> +	rcu_read_lock();
> +	desc.shash.tfm = rcu_dereference(crc64_iso_tfm);
> +	desc.crc = crc;
> +	err = crypto_shash_update(&desc.shash, buffer, len);
> +	rcu_read_unlock();
> +
> +	WARN_ON_ONCE(err);
> +
> +	return desc.crc;
> +}
> +EXPORT_SYMBOL_GPL(crc64_iso_update);
> +
> +u64 crc64_iso(const unsigned char *buffer, size_t len)
> +{
> +	return crc64_iso_update(0, buffer, len);
> +}
> +EXPORT_SYMBOL_GPL(crc64_iso);

These functions are never called.

Why are you trying to add unused code to the kernel?

- Eric
Kamlesh Gurudasani Aug. 11, 2023, 6:40 a.m. UTC | #2 
Eric Biggers <ebiggers@kernel.org> writes:

> On Fri, Aug 11, 2023 at 12:58:49AM +0530, Kamlesh Gurudasani wrote:
>> diff --git a/lib/crc64-iso.c b/lib/crc64-iso.c
>> new file mode 100644
>> index 000000000000..d6e803124fa0
> [...]
>> +u64 crc64_iso_update(u64 crc, const unsigned char *buffer, size_t len)
>> +{
>> +	struct {
>> +		struct shash_desc shash;
>> +		u64 crc;
>> +	} desc;
>> +	int err;
>> +
>> +	if (static_branch_unlikely(&crc64_iso_fallback))
>> +		return crc64_iso_generic(crc, buffer, len);
>> +
>> +	rcu_read_lock();
>> +	desc.shash.tfm = rcu_dereference(crc64_iso_tfm);
>> +	desc.crc = crc;
>> +	err = crypto_shash_update(&desc.shash, buffer, len);
>> +	rcu_read_unlock();
>> +
>> +	WARN_ON_ONCE(err);
>> +
>> +	return desc.crc;
>> +}
>> +EXPORT_SYMBOL_GPL(crc64_iso_update);
>> +
>> +u64 crc64_iso(const unsigned char *buffer, size_t len)
>> +{
>> +	return crc64_iso_update(0, buffer, len);
>> +}
>> +EXPORT_SYMBOL_GPL(crc64_iso);
>
> These functions are never called.
>
> Why are you trying to add unused code to the kernel?
>
> - Eric
Thanks for the review, Eric.

Will remove this in next revision.

Regards,
Kamlesh
Eric Biggers Aug. 12, 2023, 2:55 a.m. UTC | #3 
On Fri, Aug 11, 2023 at 12:58:49AM +0530, Kamlesh Gurudasani wrote:
> diff --git a/include/linux/crc64.h b/include/linux/crc64.h
> index 70202da51c2c..10b792080374 100644
> --- a/include/linux/crc64.h
> +++ b/include/linux/crc64.h
> @@ -8,11 +8,15 @@
>  #include <linux/types.h>
>  
>  #define CRC64_ROCKSOFT_STRING "crc64-rocksoft"
> +#define CRC64_ISO_STRING "crc64-iso"
>  
>  u64 __pure crc64_be(u64 crc, const void *p, size_t len);
>  u64 __pure crc64_iso_generic(u64 crc, const void *p, size_t len);
>  u64 __pure crc64_rocksoft_generic(u64 crc, const void *p, size_t len);
>  
> +u64 crc64_iso(const unsigned char *buffer, size_t len);
> +u64 crc64_iso_update(u64 crc, const unsigned char *buffer, size_t len);
> +
>  u64 crc64_rocksoft(const unsigned char *buffer, size_t len);
>  u64 crc64_rocksoft_update(u64 crc, const unsigned char *buffer, size_t len);

Is "crc64-iso" clear enough, or should it be "crc64-iso3309"?  There are
thousands of ISO standards.  Different CRC variants are specified by different
ISO standards.  Is this particular variant indeed commonly referred to as simply
the "ISO" CRC-64?  Even if it's currently the case that all other CRCs in ISO
standards are different widths than 64 bits (which may be unlikely?), I'm not
sure we should count on no CRC-64 variant ever being standardized by ISO.

- Eric
Elliott, Robert (Servers) Feb. 22, 2024, 9:50 p.m. UTC | #4 
> -----Original Message-----
> From: Kamlesh Gurudasani <kamlesh@ti.com>
> Sent: Friday, August 18, 2023 2:26 AM
> Subject: Re: [EXTERNAL] Re: [PATCH v2 2/6] crypto: crc64 - add crc64-iso
> framework
> 
> Eric Biggers <ebiggers@kernel.org> writes:
> 
> > Is "crc64-iso" clear enough, or should it be "crc64-iso3309"?  There are
> > thousands of ISO standards.  Different CRC variants are specified by
> different
> > ISO standards.  Is this particular variant indeed commonly referred to
> as simply
> > the "ISO" CRC-64?  Even if it's currently the case that all other CRCs
> in ISO
> > standards are different widths than 64 bits (which may be unlikely?),
> I'm not
> > sure we should count on no CRC-64 variant ever being standardized by
> ISO.
> >
> > - Eric
> https://en.wikipedia.org/wiki/Cyclic_redundancy_check
> 
> Last entry CRC-64-ISO in the table.
> It is mentioned as crc64-iso and that's the
> only 64-bit CRC standardized by ISO. 

ECMA-182 (DLT-1 tapes) was contributed to become ISO/IEC 13421 in 1993, so
that was another "64-bit CRC standardized by ISO." Plus, ISO could publish new
standards with new CRCs at any time.

> But I do agree that crc64-iso3309 would be more specific, will change it
> to crc64-iso3309 in next revision. Thanks.
> 
> Regards,
> Kamlesh

ISO-3309:1991 was withdrawn and revised by
ISO/IEC 3309:1993, which was withdrawn and revised by
ISO/IEC 13239:2002, which was confirmed in 2007 and is still current.

Apparently only the 1991 version defined a CRC-64; later versions dropped
that.

Is there really a demand for adding a 23 year old deprecated algorithm to
the kernel?
Kamlesh Gurudasani Feb. 29, 2024, 8:45 a.m. UTC | #5 
"Elliott, Robert (Servers)" <elliott@hpe.com> writes:

>> -----Original Message-----
>> From: Kamlesh Gurudasani <kamlesh@ti.com>
>> Sent: Friday, August 18, 2023 2:26 AM
>> Subject: Re: [EXTERNAL] Re: [PATCH v2 2/6] crypto: crc64 - add crc64-iso
>> framework
>> 
>> Eric Biggers <ebiggers@kernel.org> writes:
>> 
>> > Is "crc64-iso" clear enough, or should it be "crc64-iso3309"?  There are
>> > thousands of ISO standards.  Different CRC variants are specified by
>> different
>> > ISO standards.  Is this particular variant indeed commonly referred to
>> as simply
>> > the "ISO" CRC-64?  Even if it's currently the case that all other CRCs
>> in ISO
>> > standards are different widths than 64 bits (which may be unlikely?),
>> I'm not
>> > sure we should count on no CRC-64 variant ever being standardized by
>> ISO.
>> >
>> > - Eric
>> https://en.wikipedia.org/wiki/Cyclic_redundancy_check
>> 
>> Last entry CRC-64-ISO in the table.
>> It is mentioned as crc64-iso and that's the
>> only 64-bit CRC standardized by ISO. 
>
> ECMA-182 (DLT-1 tapes) was contributed to become ISO/IEC 13421 in 1993, so
> that was another "64-bit CRC standardized by ISO." Plus, ISO could publish new
> standards with new CRCs at any time.
>
>> But I do agree that crc64-iso3309 would be more specific, will change it
>> to crc64-iso3309 in next revision. Thanks.
>> 
>> Regards,
>> Kamlesh
>
> ISO-3309:1991 was withdrawn and revised by
> ISO/IEC 3309:1993, which was withdrawn and revised by
> ISO/IEC 13239:2002, which was confirmed in 2007 and is still current.
>
> Apparently only the 1991 version defined a CRC-64; later versions dropped
> that.
>
> Is there really a demand for adding a 23 year old deprecated algorithm to
> the kernel?
I understand your concern but a lot of TI's K3 based J7* and AM6* SOCs
have MCRC and MCRC64(Mostly on AM6* SOCs)
Where MCRC64 only supports above mentioned CRC64 algorithm and few
customers wants to use the hardware based CRC to ensure FFI, so we
actually need it.
If it is available in upstream and can be used easily, a lot of
customers would want to use it.

I'll look into the naming and will provide something specific to that
particular algo.

Kamlesh
diff mbox series

Patch

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 650b1b3620d8..6a6e69aa25da 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1146,6 +1146,17 @@  config CRYPTO_CRCT10DIF
 
 	  CRC algorithm used by the SCSI Block Commands standard.
 
+config CRYPTO_CRC64_ISO
+	tristate "CRC64 based on ISO 3309 Model algorithm"
+	depends on CRC64
+	select CRYPTO_HASH
+	help
+	  CRC64 CRC algorithm based on the ISO 3309 Model CRC Algorithm
+
+	  Generator polynomial: x^64 + x^4 + x^3 + x + 1
+	  Polynomial value: 0x000000000000001b
+	  See https://en.wikipedia.org/wiki/Cyclic_redundancy_check
+
 config CRYPTO_CRC64_ROCKSOFT
 	tristate "CRC64 based on Rocksoft Model algorithm"
 	depends on CRC64
diff --git a/crypto/Makefile b/crypto/Makefile
index 953a7e105e58..c087553818f6 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -157,6 +157,7 @@  obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
 obj-$(CONFIG_CRYPTO_CRC32C) += crc32c_generic.o
 obj-$(CONFIG_CRYPTO_CRC32) += crc32_generic.o
 obj-$(CONFIG_CRYPTO_CRCT10DIF) += crct10dif_common.o crct10dif_generic.o
+obj-$(CONFIG_CRYPTO_CRC64_ISO) += crc64_iso_generic.o
 obj-$(CONFIG_CRYPTO_CRC64_ROCKSOFT) += crc64_rocksoft_generic.o
 obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o authencesn.o
 obj-$(CONFIG_CRYPTO_LZO) += lzo.o lzo-rle.o
diff --git a/crypto/crc64_iso_generic.c b/crypto/crc64_iso_generic.c
new file mode 100644
index 000000000000..9fea7a3eb650
--- /dev/null
+++ b/crypto/crc64_iso_generic.c
@@ -0,0 +1,119 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/crc64.h>
+#include <linux/module.h>
+#include <crypto/internal/hash.h>
+#include <asm/unaligned.h>
+
+static int chksum_cra_init(struct crypto_tfm *tfm)
+{
+	u64 *key = crypto_tfm_ctx(tfm);
+
+	*key = 0;
+	return 0;
+}
+
+static int chksum_init(struct shash_desc *desc)
+{
+	u64 *key = crypto_shash_ctx(desc->tfm);
+	u64 *crc = shash_desc_ctx(desc);
+
+	*crc = *key;
+	return 0;
+}
+
+static int chksum_update(struct shash_desc *desc, const u8 *data,
+			 unsigned int length)
+{
+	u64 *crc = shash_desc_ctx(desc);
+
+	*crc = crc64_iso_generic(*crc, data, length);
+	return 0;
+}
+
+static int chksum_final(struct shash_desc *desc, u8 *out)
+{
+	u64 *crc = shash_desc_ctx(desc);
+
+	put_unaligned_le64(*crc, out);
+	return 0;
+}
+
+static int __chksum_finup(u64 crc, const u8 *data, unsigned int len, u8 *out)
+{
+	crc = crc64_iso_generic(crc, data, len);
+
+	put_unaligned_le64(crc, out);
+	return 0;
+}
+
+static int chksum_finup(struct shash_desc *desc, const u8 *data,
+			unsigned int len, u8 *out)
+{
+	u64 *crc = shash_desc_ctx(desc);
+
+	return __chksum_finup(*crc, data, len, out);
+}
+
+static int chksum_digest(struct shash_desc *desc, const u8 *data,
+			 unsigned int length, u8 *out)
+{
+	u64 *key = crypto_shash_ctx(desc->tfm);
+
+	return __chksum_finup(*key, data, length, out);
+}
+
+/*
+ * Setting the seed allows arbitrary accumulators and flexible XOR policy
+ */
+static int chksum_setkey(struct crypto_shash *tfm, const u8 *key,
+			 unsigned int keylen)
+{
+	u64 *mctx = crypto_shash_ctx(tfm);
+
+	if (keylen != sizeof(u64))
+		return -EINVAL;
+
+	*mctx = get_unaligned_le64(key);
+	return 0;
+}
+
+static struct shash_alg alg = {
+	.digestsize	=	sizeof(u64),
+	.setkey		=	chksum_setkey,
+	.init		=	chksum_init,
+	.update		=	chksum_update,
+	.final		=	chksum_final,
+	.finup		=	chksum_finup,
+	.digest		=	chksum_digest,
+	.descsize	=	sizeof(u64),
+	.base		=	{
+		.cra_name		=	CRC64_ISO_STRING,
+		.cra_driver_name	=	"crc64-iso-generic",
+		.cra_priority		=	200,
+		.cra_flags		=       CRYPTO_ALG_OPTIONAL_KEY,
+		.cra_blocksize		=	1,
+		.cra_ctxsize		=       sizeof(u64),
+		.cra_module		=	THIS_MODULE,
+		.cra_init		=       chksum_cra_init,
+	}
+};
+
+static int __init crc64_iso_init(void)
+{
+	return crypto_register_shash(&alg);
+}
+
+static void __exit crc64_iso_exit(void)
+{
+	crypto_unregister_shash(&alg);
+}
+
+module_init(crc64_iso_init);
+module_exit(crc64_iso_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kamlesh Gurudasani <kamlesh@ti.com>");
+MODULE_DESCRIPTION("ISO model CRC64 calculation");
+MODULE_ALIAS_CRYPTO("crc64-iso");
+MODULE_ALIAS_CRYPTO("crc64-iso-generic");
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 202ca1a3105d..a41d52a879d6 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -2327,6 +2327,11 @@  static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 				generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
 		fallthrough;
+	case 329:
+		test_hash_speed("crc64-iso", sec, generic_hash_speed_template);
+		if (mode > 300 && mode < 400)
+			break;
+		fallthrough;
 	case 399:
 		break;
 
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 216878c8bc3d..bd0414b99287 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4679,6 +4679,13 @@  static const struct alg_test_desc alg_test_descs[] = {
 		.suite = {
 			.hash = __VECS(crc32c_tv_template)
 		}
+	}, {
+		.alg = "crc64-iso",
+		.test = alg_test_hash,
+		.fips_allowed = 1,
+		.suite = {
+			.hash = __VECS(crc64_iso_tv_template)
+		}
 	}, {
 		.alg = "crc64-rocksoft",
 		.test = alg_test_hash,
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 5ca7a412508f..5225abd96818 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -5209,6 +5209,410 @@  static const struct hash_testvec rmd160_tv_template[] = {
 	}
 };
 
+static const struct hash_testvec crc64_iso_tv_template[] = {
+	{
+		.psize = 0,
+		.digest = "\x00\x00\x00\x00\x00\x00\x00\x00",
+	},
+	{
+		.plaintext = "\x01\x02\x03\x04\x05\x06\x07\x08"
+			     "\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
+			     "\x11\x12\x13\x14\x15\x16\x17\x18"
+			     "\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20"
+			     "\x21\x22\x23\x24\x25\x26\x27\x28",
+		.psize = 40,
+		.digest = "\xaf\x45\xba\x7d\xf2\xda\xa0\xaa",
+	},
+	{
+		.plaintext = "\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
+			     "\x31\x32\x33\x34\x35\x36\x37\x38"
+			     "\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
+			     "\x41\x42\x43\x44\x45\x46\x47\x48"
+			     "\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50",
+		.psize = 40,
+		.digest = "\x81\x55\x2e\x76\xf8\xd0\xaa\xa0",
+	},
+	{
+		.plaintext = "\x51\x52\x53\x54\x55\x56\x57\x58"
+			     "\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
+			     "\x61\x62\x63\x64\x65\x66\x67\x68"
+			     "\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
+			     "\x71\x72\x73\x74\x75\x76\x77\x78",
+		.psize = 40,
+		.digest = "\xc6\xb6\x26\x82\x0d\x25\x5f\x55",
+	},
+	{
+		.plaintext = "\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
+			     "\x81\x82\x83\x84\x85\x86\x87\x88"
+			     "\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+			     "\x91\x92\x93\x94\x95\x96\x97\x98"
+			     "\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0",
+		.psize = 40,
+		.digest = "\x20\x8a\xe6\x59\xdf\xf7\x8d\x87",
+	},
+	{
+		.plaintext = "\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8"
+			     "\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
+			     "\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8"
+			     "\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
+			     "\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8",
+		.psize = 40,
+		.digest = "\x19\x9e\xba\xff\x70\x58\x22\x28",
+
+	},
+	{
+		.plaintext = "\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
+			     "\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8"
+			     "\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
+			     "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8"
+			     "\xe9\xea\xeb\xec\xed\xee\xef\xf0",
+		.psize = 40,
+		.digest = "\xa3\xdc\x11\x98\x16\x3e\x44\x4e",
+	},
+	{
+		.plaintext = "\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
+			     "\x31\x32\x33\x34\x35\x36\x37\x38"
+			     "\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
+			     "\x41\x42\x43\x44\x45\x46\x47\x48"
+			     "\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50",
+		.psize = 40,
+		.digest = "\x81\x55\x2e\x76\xf8\xd0\xaa\xa0",
+	},
+	{
+		.plaintext = "\x51\x52\x53\x54\x55\x56\x57\x58"
+			     "\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
+			     "\x61\x62\x63\x64\x65\x66\x67\x68"
+			     "\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
+			     "\x71\x72\x73\x74\x75\x76\x77\x78",
+		.psize = 40,
+		.digest = "\xc6\xb6\x26\x82\x0d\x25\x5f\x55",
+	},
+	{
+		.plaintext = "\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
+			     "\x81\x82\x83\x84\x85\x86\x87\x88"
+			     "\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+			     "\x91\x92\x93\x94\x95\x96\x97\x98"
+			     "\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0",
+		.psize = 40,
+		.digest = "\x20\x8a\xe6\x59\xdf\xf7\x8d\x87",
+	},
+	{
+		.plaintext = "\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8"
+			     "\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
+			     "\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8"
+			     "\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
+			     "\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8",
+		.psize = 40,
+		.digest = "\x19\x9e\xba\xff\x70\x58\x22\x28",
+	},
+	{
+		.plaintext = "\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
+			     "\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8"
+			     "\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
+			     "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8"
+			     "\xe9\xea\xeb\xec\xed\xee\xef\xf0",
+		.psize = 40,
+		.digest = "\xa3\xdc\x11\x98\x16\x3e\x44\x4e",
+	},
+	{
+		.key = "\xff\xff\xff\xff\xff\xff\xff\xff",
+		.ksize = 8,
+		.plaintext = "\x01\x02\x03\x04\x05\x06\x07\x08"
+			     "\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
+			     "\x11\x12\x13\x14\x15\x16\x17\x18"
+			     "\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20"
+			     "\x21\x22\x23\x24\x25\x26\x27\x28"
+			     "\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
+			     "\x31\x32\x33\x34\x35\x36\x37\x38"
+			     "\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
+			     "\x41\x42\x43\x44\x45\x46\x47\x48"
+			     "\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50"
+			     "\x51\x52\x53\x54\x55\x56\x57\x58"
+			     "\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
+			     "\x61\x62\x63\x64\x65\x66\x67\x68"
+			     "\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
+			     "\x71\x72\x73\x74\x75\x76\x77\x78"
+			     "\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
+			     "\x81\x82\x83\x84\x85\x86\x87\x88"
+			     "\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+			     "\x91\x92\x93\x94\x95\x96\x97\x98"
+			     "\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0"
+			     "\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8"
+			     "\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
+			     "\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8"
+			     "\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
+			     "\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8"
+			     "\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
+			     "\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8"
+			     "\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
+			     "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8"
+			     "\xe9\xea\xeb\xec\xed\xee\xef\xf0",
+		.psize = 240,
+		.digest = "\x8b\xa6\xd7\x91\xb4\x74\x96\x84",
+	}, {
+		.key = "\xff\xff\xff\xff\xff\xff\xff\xff",
+		.ksize = 8,
+		.plaintext = "\x6e\x05\x79\x10\xa7\x1b\xb2\x49"
+			     "\xe0\x54\xeb\x82\x19\x8d\x24\xbb"
+			     "\x2f\xc6\x5d\xf4\x68\xff\x96\x0a"
+			     "\xa1\x38\xcf\x43\xda\x71\x08\x7c"
+			     "\x13\xaa\x1e\xb5\x4c\xe3\x57\xee"
+			     "\x85\x1c\x90\x27\xbe\x32\xc9\x60"
+			     "\xf7\x6b\x02\x99\x0d\xa4\x3b\xd2"
+			     "\x46\xdd\x74\x0b\x7f\x16\xad\x21"
+			     "\xb8\x4f\xe6\x5a\xf1\x88\x1f\x93"
+			     "\x2a\xc1\x35\xcc\x63\xfa\x6e\x05"
+			     "\x9c\x10\xa7\x3e\xd5\x49\xe0\x77"
+			     "\x0e\x82\x19\xb0\x24\xbb\x52\xe9"
+			     "\x5d\xf4\x8b\x22\x96\x2d\xc4\x38"
+			     "\xcf\x66\xfd\x71\x08\x9f\x13\xaa"
+			     "\x41\xd8\x4c\xe3\x7a\x11\x85\x1c"
+			     "\xb3\x27\xbe\x55\xec\x60\xf7\x8e"
+			     "\x02\x99\x30\xc7\x3b\xd2\x69\x00"
+			     "\x74\x0b\xa2\x16\xad\x44\xdb\x4f"
+			     "\xe6\x7d\x14\x88\x1f\xb6\x2a\xc1"
+			     "\x58\xef\x63\xfa\x91\x05\x9c\x33"
+			     "\xca\x3e\xd5\x6c\x03\x77\x0e\xa5"
+			     "\x19\xb0\x47\xde\x52\xe9\x80\x17"
+			     "\x8b\x22\xb9\x2d\xc4\x5b\xf2\x66"
+			     "\xfd\x94\x08\x9f\x36\xcd\x41\xd8"
+			     "\x6f\x06\x7a\x11\xa8\x1c\xb3\x4a"
+			     "\xe1\x55\xec\x83\x1a\x8e\x25\xbc"
+			     "\x30\xc7\x5e\xf5\x69\x00\x97\x0b"
+			     "\xa2\x39\xd0\x44\xdb\x72\x09\x7d"
+			     "\x14\xab\x1f\xb6\x4d\xe4\x58\xef"
+			     "\x86\x1d\x91\x28\xbf\x33\xca\x61"
+			     "\xf8\x6c\x03\x9a\x0e\xa5\x3c\xd3"
+			     "\x47\xde\x75\x0c\x80\x17\xae\x22"
+			     "\xb9\x50\xe7\x5b\xf2\x89\x20\x94"
+			     "\x2b\xc2\x36\xcd\x64\xfb\x6f\x06"
+			     "\x9d\x11\xa8\x3f\xd6\x4a\xe1\x78"
+			     "\x0f\x83\x1a\xb1\x25\xbc\x53\xea"
+			     "\x5e\xf5\x8c\x00\x97\x2e\xc5\x39"
+			     "\xd0\x67\xfe\x72\x09\xa0\x14\xab"
+			     "\x42\xd9\x4d\xe4\x7b\x12\x86\x1d"
+			     "\xb4\x28\xbf\x56\xed\x61\xf8\x8f"
+			     "\x03\x9a\x31\xc8\x3c\xd3\x6a\x01"
+			     "\x75\x0c\xa3\x17\xae\x45\xdc\x50"
+			     "\xe7\x7e\x15\x89\x20\xb7\x2b\xc2"
+			     "\x59\xf0\x64\xfb\x92\x06\x9d\x34"
+			     "\xcb\x3f\xd6\x6d\x04\x78\x0f\xa6"
+			     "\x1a\xb1\x48\xdf\x53\xea\x81\x18"
+			     "\x8c\x23\xba\x2e\xc5\x5c\xf3\x67"
+			     "\xfe\x95\x09\xa0\x37\xce\x42\xd9"
+			     "\x70\x07\x7b\x12\xa9\x1d\xb4\x4b"
+			     "\xe2\x56\xed\x84\x1b\x8f\x26\xbd"
+			     "\x31\xc8\x5f\xf6\x6a\x01\x98\x0c"
+			     "\xa3\x3a\xd1\x45\xdc\x73\x0a\x7e"
+			     "\x15\xac\x20\xb7\x4e\xe5\x59\xf0"
+			     "\x87\x1e\x92\x29\xc0\x34\xcb\x62"
+			     "\xf9\x6d\x04\x9b\x0f\xa6\x3d\xd4"
+			     "\x48\xdf\x76\x0d\x81\x18\xaf\x23"
+			     "\xba\x51\xe8\x5c\xf3\x8a\x21\x95"
+			     "\x2c\xc3\x37\xce\x65\xfc\x70\x07"
+			     "\x9e\x12\xa9\x40\xd7\x4b\xe2\x79"
+			     "\x10\x84\x1b\xb2\x26\xbd\x54\xeb"
+			     "\x5f\xf6\x8d\x01\x98\x2f\xc6\x3a"
+			     "\xd1\x68\xff\x73\x0a\xa1\x15\xac"
+			     "\x43\xda\x4e\xe5\x7c\x13\x87\x1e"
+			     "\xb5\x29\xc0\x57\xee\x62\xf9\x90"
+			     "\x04\x9b\x32\xc9\x3d\xd4\x6b\x02"
+			     "\x76\x0d\xa4\x18\xaf\x46\xdd\x51"
+			     "\xe8\x7f\x16\x8a\x21\xb8\x2c\xc3"
+			     "\x5a\xf1\x65\xfc\x93\x07\x9e\x35"
+			     "\xcc\x40\xd7\x6e\x05\x79\x10\xa7"
+			     "\x1b\xb2\x49\xe0\x54\xeb\x82\x19"
+			     "\x8d\x24\xbb\x2f\xc6\x5d\xf4\x68"
+			     "\xff\x96\x0a\xa1\x38\xcf\x43\xda"
+			     "\x71\x08\x7c\x13\xaa\x1e\xb5\x4c"
+			     "\xe3\x57\xee\x85\x1c\x90\x27\xbe"
+			     "\x32\xc9\x60\xf7\x6b\x02\x99\x0d"
+			     "\xa4\x3b\xd2\x46\xdd\x74\x0b\x7f"
+			     "\x16\xad\x21\xb8\x4f\xe6\x5a\xf1"
+			     "\x88\x1f\x93\x2a\xc1\x35\xcc\x63"
+			     "\xfa\x6e\x05\x9c\x10\xa7\x3e\xd5"
+			     "\x49\xe0\x77\x0e\x82\x19\xb0\x24"
+			     "\xbb\x52\xe9\x5d\xf4\x8b\x22\x96"
+			     "\x2d\xc4\x38\xcf\x66\xfd\x71\x08"
+			     "\x9f\x13\xaa\x41\xd8\x4c\xe3\x7a"
+			     "\x11\x85\x1c\xb3\x27\xbe\x55\xec"
+			     "\x60\xf7\x8e\x02\x99\x30\xc7\x3b"
+			     "\xd2\x69\x00\x74\x0b\xa2\x16\xad"
+			     "\x44\xdb\x4f\xe6\x7d\x14\x88\x1f"
+			     "\xb6\x2a\xc1\x58\xef\x63\xfa\x91"
+			     "\x05\x9c\x33\xca\x3e\xd5\x6c\x03"
+			     "\x77\x0e\xa5\x19\xb0\x47\xde\x52"
+			     "\xe9\x80\x17\x8b\x22\xb9\x2d\xc4"
+			     "\x5b\xf2\x66\xfd\x94\x08\x9f\x36"
+			     "\xcd\x41\xd8\x6f\x06\x7a\x11\xa8"
+			     "\x1c\xb3\x4a\xe1\x55\xec\x83\x1a"
+			     "\x8e\x25\xbc\x30\xc7\x5e\xf5\x69"
+			     "\x00\x97\x0b\xa2\x39\xd0\x44\xdb"
+			     "\x72\x09\x7d\x14\xab\x1f\xb6\x4d"
+			     "\xe4\x58\xef\x86\x1d\x91\x28\xbf"
+			     "\x33\xca\x61\xf8\x6c\x03\x9a\x0e"
+			     "\xa5\x3c\xd3\x47\xde\x75\x0c\x80"
+			     "\x17\xae\x22\xb9\x50\xe7\x5b\xf2"
+			     "\x89\x20\x94\x2b\xc2\x36\xcd\x64"
+			     "\xfb\x6f\x06\x9d\x11\xa8\x3f\xd6"
+			     "\x4a\xe1\x78\x0f\x83\x1a\xb1\x25"
+			     "\xbc\x53\xea\x5e\xf5\x8c\x00\x97"
+			     "\x2e\xc5\x39\xd0\x67\xfe\x72\x09"
+			     "\xa0\x14\xab\x42\xd9\x4d\xe4\x7b"
+			     "\x12\x86\x1d\xb4\x28\xbf\x56\xed"
+			     "\x61\xf8\x8f\x03\x9a\x31\xc8\x3c"
+			     "\xd3\x6a\x01\x75\x0c\xa3\x17\xae"
+			     "\x45\xdc\x50\xe7\x7e\x15\x89\x20"
+			     "\xb7\x2b\xc2\x59\xf0\x64\xfb\x92"
+			     "\x06\x9d\x34\xcb\x3f\xd6\x6d\x04"
+			     "\x78\x0f\xa6\x1a\xb1\x48\xdf\x53"
+			     "\xea\x81\x18\x8c\x23\xba\x2e\xc5"
+			     "\x5c\xf3\x67\xfe\x95\x09\xa0\x37"
+			     "\xce\x42\xd9\x70\x07\x7b\x12\xa9"
+			     "\x1d\xb4\x4b\xe2\x56\xed\x84\x1b"
+			     "\x8f\x26\xbd\x31\xc8\x5f\xf6\x6a"
+			     "\x01\x98\x0c\xa3\x3a\xd1\x45\xdc"
+			     "\x73\x0a\x7e\x15\xac\x20\xb7\x4e"
+			     "\xe5\x59\xf0\x87\x1e\x92\x29\xc0"
+			     "\x34\xcb\x62\xf9\x6d\x04\x9b\x0f"
+			     "\xa6\x3d\xd4\x48\xdf\x76\x0d\x81"
+			     "\x18\xaf\x23\xba\x51\xe8\x5c\xf3"
+			     "\x8a\x21\x95\x2c\xc3\x37\xce\x65"
+			     "\xfc\x70\x07\x9e\x12\xa9\x40\xd7"
+			     "\x4b\xe2\x79\x10\x84\x1b\xb2\x26"
+			     "\xbd\x54\xeb\x5f\xf6\x8d\x01\x98"
+			     "\x2f\xc6\x3a\xd1\x68\xff\x73\x0a"
+			     "\xa1\x15\xac\x43\xda\x4e\xe5\x7c"
+			     "\x13\x87\x1e\xb5\x29\xc0\x57\xee"
+			     "\x62\xf9\x90\x04\x9b\x32\xc9\x3d"
+			     "\xd4\x6b\x02\x76\x0d\xa4\x18\xaf"
+			     "\x46\xdd\x51\xe8\x7f\x16\x8a\x21"
+			     "\xb8\x2c\xc3\x5a\xf1\x65\xfc\x93"
+			     "\x07\x9e\x35\xcc\x40\xd7\x6e\x05"
+			     "\x79\x10\xa7\x1b\xb2\x49\xe0\x54"
+			     "\xeb\x82\x19\x8d\x24\xbb\x2f\xc6"
+			     "\x5d\xf4\x68\xff\x96\x0a\xa1\x38"
+			     "\xcf\x43\xda\x71\x08\x7c\x13\xaa"
+			     "\x1e\xb5\x4c\xe3\x57\xee\x85\x1c"
+			     "\x90\x27\xbe\x32\xc9\x60\xf7\x6b"
+			     "\x02\x99\x0d\xa4\x3b\xd2\x46\xdd"
+			     "\x74\x0b\x7f\x16\xad\x21\xb8\x4f"
+			     "\xe6\x5a\xf1\x88\x1f\x93\x2a\xc1"
+			     "\x35\xcc\x63\xfa\x6e\x05\x9c\x10"
+			     "\xa7\x3e\xd5\x49\xe0\x77\x0e\x82"
+			     "\x19\xb0\x24\xbb\x52\xe9\x5d\xf4"
+			     "\x8b\x22\x96\x2d\xc4\x38\xcf\x66"
+			     "\xfd\x71\x08\x9f\x13\xaa\x41\xd8"
+			     "\x4c\xe3\x7a\x11\x85\x1c\xb3\x27"
+			     "\xbe\x55\xec\x60\xf7\x8e\x02\x99"
+			     "\x30\xc7\x3b\xd2\x69\x00\x74\x0b"
+			     "\xa2\x16\xad\x44\xdb\x4f\xe6\x7d"
+			     "\x14\x88\x1f\xb6\x2a\xc1\x58\xef"
+			     "\x63\xfa\x91\x05\x9c\x33\xca\x3e"
+			     "\xd5\x6c\x03\x77\x0e\xa5\x19\xb0"
+			     "\x47\xde\x52\xe9\x80\x17\x8b\x22"
+			     "\xb9\x2d\xc4\x5b\xf2\x66\xfd\x94"
+			     "\x08\x9f\x36\xcd\x41\xd8\x6f\x06"
+			     "\x7a\x11\xa8\x1c\xb3\x4a\xe1\x55"
+			     "\xec\x83\x1a\x8e\x25\xbc\x30\xc7"
+			     "\x5e\xf5\x69\x00\x97\x0b\xa2\x39"
+			     "\xd0\x44\xdb\x72\x09\x7d\x14\xab"
+			     "\x1f\xb6\x4d\xe4\x58\xef\x86\x1d"
+			     "\x91\x28\xbf\x33\xca\x61\xf8\x6c"
+			     "\x03\x9a\x0e\xa5\x3c\xd3\x47\xde"
+			     "\x75\x0c\x80\x17\xae\x22\xb9\x50"
+			     "\xe7\x5b\xf2\x89\x20\x94\x2b\xc2"
+			     "\x36\xcd\x64\xfb\x6f\x06\x9d\x11"
+			     "\xa8\x3f\xd6\x4a\xe1\x78\x0f\x83"
+			     "\x1a\xb1\x25\xbc\x53\xea\x5e\xf5"
+			     "\x8c\x00\x97\x2e\xc5\x39\xd0\x67"
+			     "\xfe\x72\x09\xa0\x14\xab\x42\xd9"
+			     "\x4d\xe4\x7b\x12\x86\x1d\xb4\x28"
+			     "\xbf\x56\xed\x61\xf8\x8f\x03\x9a"
+			     "\x31\xc8\x3c\xd3\x6a\x01\x75\x0c"
+			     "\xa3\x17\xae\x45\xdc\x50\xe7\x7e"
+			     "\x15\x89\x20\xb7\x2b\xc2\x59\xf0"
+			     "\x64\xfb\x92\x06\x9d\x34\xcb\x3f"
+			     "\xd6\x6d\x04\x78\x0f\xa6\x1a\xb1"
+			     "\x48\xdf\x53\xea\x81\x18\x8c\x23"
+			     "\xba\x2e\xc5\x5c\xf3\x67\xfe\x95"
+			     "\x09\xa0\x37\xce\x42\xd9\x70\x07"
+			     "\x7b\x12\xa9\x1d\xb4\x4b\xe2\x56"
+			     "\xed\x84\x1b\x8f\x26\xbd\x31\xc8"
+			     "\x5f\xf6\x6a\x01\x98\x0c\xa3\x3a"
+			     "\xd1\x45\xdc\x73\x0a\x7e\x15\xac"
+			     "\x20\xb7\x4e\xe5\x59\xf0\x87\x1e"
+			     "\x92\x29\xc0\x34\xcb\x62\xf9\x6d"
+			     "\x04\x9b\x0f\xa6\x3d\xd4\x48\xdf"
+			     "\x76\x0d\x81\x18\xaf\x23\xba\x51"
+			     "\xe8\x5c\xf3\x8a\x21\x95\x2c\xc3"
+			     "\x37\xce\x65\xfc\x70\x07\x9e\x12"
+			     "\xa9\x40\xd7\x4b\xe2\x79\x10\x84"
+			     "\x1b\xb2\x26\xbd\x54\xeb\x5f\xf6"
+			     "\x8d\x01\x98\x2f\xc6\x3a\xd1\x68"
+			     "\xff\x73\x0a\xa1\x15\xac\x43\xda"
+			     "\x4e\xe5\x7c\x13\x87\x1e\xb5\x29"
+			     "\xc0\x57\xee\x62\xf9\x90\x04\x9b"
+			     "\x32\xc9\x3d\xd4\x6b\x02\x76\x0d"
+			     "\xa4\x18\xaf\x46\xdd\x51\xe8\x7f"
+			     "\x16\x8a\x21\xb8\x2c\xc3\x5a\xf1"
+			     "\x65\xfc\x93\x07\x9e\x35\xcc\x40"
+			     "\xd7\x6e\x05\x79\x10\xa7\x1b\xb2"
+			     "\x49\xe0\x54\xeb\x82\x19\x8d\x24"
+			     "\xbb\x2f\xc6\x5d\xf4\x68\xff\x96"
+			     "\x0a\xa1\x38\xcf\x43\xda\x71\x08"
+			     "\x7c\x13\xaa\x1e\xb5\x4c\xe3\x57"
+			     "\xee\x85\x1c\x90\x27\xbe\x32\xc9"
+			     "\x60\xf7\x6b\x02\x99\x0d\xa4\x3b"
+			     "\xd2\x46\xdd\x74\x0b\x7f\x16\xad"
+			     "\x21\xb8\x4f\xe6\x5a\xf1\x88\x1f"
+			     "\x93\x2a\xc1\x35\xcc\x63\xfa\x6e"
+			     "\x05\x9c\x10\xa7\x3e\xd5\x49\xe0"
+			     "\x77\x0e\x82\x19\xb0\x24\xbb\x52"
+			     "\xe9\x5d\xf4\x8b\x22\x96\x2d\xc4"
+			     "\x38\xcf\x66\xfd\x71\x08\x9f\x13"
+			     "\xaa\x41\xd8\x4c\xe3\x7a\x11\x85"
+			     "\x1c\xb3\x27\xbe\x55\xec\x60\xf7"
+			     "\x8e\x02\x99\x30\xc7\x3b\xd2\x69"
+			     "\x00\x74\x0b\xa2\x16\xad\x44\xdb"
+			     "\x4f\xe6\x7d\x14\x88\x1f\xb6\x2a"
+			     "\xc1\x58\xef\x63\xfa\x91\x05\x9c"
+			     "\x33\xca\x3e\xd5\x6c\x03\x77\x0e"
+			     "\xa5\x19\xb0\x47\xde\x52\xe9\x80"
+			     "\x17\x8b\x22\xb9\x2d\xc4\x5b\xf2"
+			     "\x66\xfd\x94\x08\x9f\x36\xcd\x41"
+			     "\xd8\x6f\x06\x7a\x11\xa8\x1c\xb3"
+			     "\x4a\xe1\x55\xec\x83\x1a\x8e\x25"
+			     "\xbc\x30\xc7\x5e\xf5\x69\x00\x97"
+			     "\x0b\xa2\x39\xd0\x44\xdb\x72\x09"
+			     "\x7d\x14\xab\x1f\xb6\x4d\xe4\x58"
+			     "\xef\x86\x1d\x91\x28\xbf\x33\xca"
+			     "\x61\xf8\x6c\x03\x9a\x0e\xa5\x3c"
+			     "\xd3\x47\xde\x75\x0c\x80\x17\xae"
+			     "\x22\xb9\x50\xe7\x5b\xf2\x89\x20"
+			     "\x94\x2b\xc2\x36\xcd\x64\xfb\x6f"
+			     "\x06\x9d\x11\xa8\x3f\xd6\x4a\xe1"
+			     "\x78\x0f\x83\x1a\xb1\x25\xbc\x53"
+			     "\xea\x5e\xf5\x8c\x00\x97\x2e\xc5"
+			     "\x39\xd0\x67\xfe\x72\x09\xa0\x14"
+			     "\xab\x42\xd9\x4d\xe4\x7b\x12\x86"
+			     "\x1d\xb4\x28\xbf\x56\xed\x61\xf8"
+			     "\x8f\x03\x9a\x31\xc8\x3c\xd3\x6a"
+			     "\x01\x75\x0c\xa3\x17\xae\x45\xdc"
+			     "\x50\xe7\x7e\x15\x89\x20\xb7\x2b"
+			     "\xc2\x59\xf0\x64\xfb\x92\x06\x9d"
+			     "\x34\xcb\x3f\xd6\x6d\x04\x78\x0f"
+			     "\xa6\x1a\xb1\x48\xdf\x53\xea\x81"
+			     "\x18\x8c\x23\xba\x2e\xc5\x5c\xf3"
+			     "\x67\xfe\x95\x09\xa0\x37\xce\x42"
+			     "\xd9\x70\x07\x7b\x12\xa9\x1d\xb4"
+			     "\x4b\xe2\x56\xed\x84\x1b\x8f\x26"
+			     "\xbd\x31\xc8\x5f\xf6\x6a\x01\x98",
+		.psize = 2048,
+		.digest = "\x4b\x82\xa5\x0e\x72\x01\x0b\xc6",
+	}
+};
+
 static const u8 zeroes[4096] = { [0 ... 4095] = 0 };
 static const u8 ones[4096] = { [0 ... 4095] = 0xff };
 
diff --git a/include/linux/crc64.h b/include/linux/crc64.h
index 70202da51c2c..10b792080374 100644
--- a/include/linux/crc64.h
+++ b/include/linux/crc64.h
@@ -8,11 +8,15 @@ 
 #include <linux/types.h>
 
 #define CRC64_ROCKSOFT_STRING "crc64-rocksoft"
+#define CRC64_ISO_STRING "crc64-iso"
 
 u64 __pure crc64_be(u64 crc, const void *p, size_t len);
 u64 __pure crc64_iso_generic(u64 crc, const void *p, size_t len);
 u64 __pure crc64_rocksoft_generic(u64 crc, const void *p, size_t len);
 
+u64 crc64_iso(const unsigned char *buffer, size_t len);
+u64 crc64_iso_update(u64 crc, const unsigned char *buffer, size_t len);
+
 u64 crc64_rocksoft(const unsigned char *buffer, size_t len);
 u64 crc64_rocksoft_update(u64 crc, const unsigned char *buffer, size_t len);
 
diff --git a/lib/crc64-iso.c b/lib/crc64-iso.c
new file mode 100644
index 000000000000..d6e803124fa0
--- /dev/null
+++ b/lib/crc64-iso.c
@@ -0,0 +1,126 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/crc64.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <crypto/hash.h>
+#include <crypto/algapi.h>
+#include <linux/static_key.h>
+#include <linux/notifier.h>
+
+static struct crypto_shash __rcu *crc64_iso_tfm;
+static DEFINE_STATIC_KEY_TRUE(crc64_iso_fallback);
+static DEFINE_MUTEX(crc64_iso_mutex);
+static struct work_struct crc64_iso_rehash_work;
+
+static int crc64_iso_notify(struct notifier_block *self, unsigned long val, void *data)
+{
+	struct crypto_alg *alg = data;
+
+	if (val != CRYPTO_MSG_ALG_LOADED ||
+	    strcmp(alg->cra_name, CRC64_ISO_STRING))
+		return NOTIFY_DONE;
+
+	schedule_work(&crc64_iso_rehash_work);
+	return NOTIFY_OK;
+}
+
+static void crc64_iso_rehash(struct work_struct *work)
+{
+	struct crypto_shash *new, *old;
+
+	mutex_lock(&crc64_iso_mutex);
+	old = rcu_dereference_protected(crc64_iso_tfm,
+					lockdep_is_held(&crc64_iso_mutex));
+	new = crypto_alloc_shash(CRC64_ISO_STRING, 0, 0);
+	if (IS_ERR(new)) {
+		mutex_unlock(&crc64_iso_mutex);
+		return;
+	}
+	rcu_assign_pointer(crc64_iso_tfm, new);
+	mutex_unlock(&crc64_iso_mutex);
+
+	if (old) {
+		synchronize_rcu();
+		crypto_free_shash(old);
+	} else {
+		static_branch_disable(&crc64_iso_fallback);
+	}
+}
+
+static struct notifier_block crc64_iso_nb = {
+	.notifier_call = crc64_iso_notify,
+};
+
+u64 crc64_iso_update(u64 crc, const unsigned char *buffer, size_t len)
+{
+	struct {
+		struct shash_desc shash;
+		u64 crc;
+	} desc;
+	int err;
+
+	if (static_branch_unlikely(&crc64_iso_fallback))
+		return crc64_iso_generic(crc, buffer, len);
+
+	rcu_read_lock();
+	desc.shash.tfm = rcu_dereference(crc64_iso_tfm);
+	desc.crc = crc;
+	err = crypto_shash_update(&desc.shash, buffer, len);
+	rcu_read_unlock();
+
+	WARN_ON_ONCE(err);
+
+	return desc.crc;
+}
+EXPORT_SYMBOL_GPL(crc64_iso_update);
+
+u64 crc64_iso(const unsigned char *buffer, size_t len)
+{
+	return crc64_iso_update(0, buffer, len);
+}
+EXPORT_SYMBOL_GPL(crc64_iso);
+
+static int __init crc64_iso_mod_init(void)
+{
+	INIT_WORK(&crc64_iso_rehash_work, crc64_iso_rehash);
+	crypto_register_notifier(&crc64_iso_nb);
+	crc64_iso_rehash(&crc64_iso_rehash_work);
+	return 0;
+}
+
+static void __exit crc64_iso_mod_fini(void)
+{
+	crypto_unregister_notifier(&crc64_iso_nb);
+	cancel_work_sync(&crc64_iso_rehash_work);
+	crypto_free_shash(rcu_dereference_protected(crc64_iso_tfm, 1));
+}
+
+module_init(crc64_iso_mod_init);
+module_exit(crc64_iso_mod_fini);
+
+static int crc64_iso_transform_show(char *buffer, const struct kernel_param *kp)
+{
+	struct crypto_shash *tfm;
+	int len;
+
+	if (static_branch_unlikely(&crc64_iso_fallback))
+		return sprintf(buffer, "fallback\n");
+
+	rcu_read_lock();
+	tfm = rcu_dereference(crc64_iso_tfm);
+	len = snprintf(buffer, PAGE_SIZE, "%s\n",
+		       crypto_shash_driver_name(tfm));
+	rcu_read_unlock();
+
+	return len;
+}
+
+module_param_call(transform, NULL, crc64_iso_transform_show, NULL, 0444);
+
+MODULE_AUTHOR("Kamlesh Gurudasani <kamlesh@ti.com>");
+MODULE_DESCRIPTION("ISO model CRC64 calculation (library API)");
+MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc64");