Pull the required nvme crc64 apis and table from the linux kernel. This
is required to generate and verify 64 bit guard tag for nvme backend
of io_uring_cmd ioengine.
Signed-off-by: Ankit Kumar <ankit.kumar@xxxxxxxxxxx>
---
crc/crc64.c | 32 ++++++++++++
crc/crc64.h | 3 ++
crc/crc64table.h | 130 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 165 insertions(+)
create mode 100644 crc/crc64table.h
diff --git a/crc/crc64.c b/crc/crc64.c
index bf24a97b..c910e5b8 100644
--- a/crc/crc64.c
+++ b/crc/crc64.c
@@ -1,4 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * crc64nvme[256] table is from the generator polynomial specified by NVMe
+ * 64b CRC and is defined as,
+ *
+ * x^64 + x^63 + x^61 + x^59 + x^58 + x^56 + x^55 + x^52 + x^49 + x^48 + x^47 +
+ * x^46 + x^44 + x^41 + x^37 + x^36 + x^34 + x^32 + x^31 + x^28 + x^26 + x^23 +
+ * x^22 + x^19 + x^16 + x^13 + x^12 + x^10 + x^9 + x^6 + x^4 + x^3 + 1
+ *
+ */
+
#include "crc64.h"
+#include "crc64table.h"
/*
* poly 0x95AC9329AC4BC9B5ULL and init 0xFFFFFFFFFFFFFFFFULL
@@ -102,3 +114,23 @@ unsigned long long fio_crc64(const unsigned char *buffer, unsigned long length)
return crc;
}
+/**
+ * fio_crc64_nvme - Calculate bitwise NVMe CRC64
+ * @crc: seed value for computation. 0 for a new CRC calculation, or the
+ * previous crc64 value if computing incrementally.
+ * @p: pointer to buffer over which CRC64 is run
+ * @len: length of buffer @p
+ */
+unsigned long long fio_crc64_nvme(unsigned long long crc, const void *p,
+ unsigned int len)
+{
+ const unsigned char *_p = p;
+ unsigned int i;
+
+ crc = ~crc;
+
+ for (i = 0; i < len; i++)
+ crc = (crc >> 8) ^ crc64nvmetable[(crc & 0xff) ^ *_p++];
+
+ return ~crc;
+}
diff --git a/crc/crc64.h b/crc/crc64.h
index fe9cad3e..e586edee 100644
--- a/crc/crc64.h
+++ b/crc/crc64.h
@@ -3,4 +3,7 @@
unsigned long long fio_crc64(const unsigned char *, unsigned long);
+unsigned long long fio_crc64_nvme(unsigned long long crc, const void *p,
+ unsigned int len);
+
#endif
diff --git a/crc/crc64table.h b/crc/crc64table.h
new file mode 100644
index 00000000..04224d4f
--- /dev/null
+++ b/crc/crc64table.h
@@ -0,0 +1,130 @@
+static const unsigned long long crc64nvmetable[256] = {
+ 0x0000000000000000ULL, 0x7f6ef0c830358979ULL,
+ 0xfedde190606b12f2ULL, 0x81b31158505e9b8bULL,
+ 0xc962e5739841b68fULL, 0xb60c15bba8743ff6ULL,
+ 0x37bf04e3f82aa47dULL, 0x48d1f42bc81f2d04ULL,
+ 0xa61cecb46814fe75ULL, 0xd9721c7c5821770cULL,
+ 0x58c10d24087fec87ULL, 0x27affdec384a65feULL,
+ 0x6f7e09c7f05548faULL, 0x1010f90fc060c183ULL,
+ 0x91a3e857903e5a08ULL, 0xeecd189fa00bd371ULL,
+ 0x78e0ff3b88be6f81ULL, 0x078e0ff3b88be6f8ULL,
+ 0x863d1eabe8d57d73ULL, 0xf953ee63d8e0f40aULL,
+ 0xb1821a4810ffd90eULL, 0xceecea8020ca5077ULL,
+ 0x4f5ffbd87094cbfcULL, 0x30310b1040a14285ULL,
+ 0xdefc138fe0aa91f4ULL, 0xa192e347d09f188dULL,
+ 0x2021f21f80c18306ULL, 0x5f4f02d7b0f40a7fULL,
+ 0x179ef6fc78eb277bULL, 0x68f0063448deae02ULL,
+ 0xe943176c18803589ULL, 0x962de7a428b5bcf0ULL,
+ 0xf1c1fe77117cdf02ULL, 0x8eaf0ebf2149567bULL,
+ 0x0f1c1fe77117cdf0ULL, 0x7072ef2f41224489ULL,
+ 0x38a31b04893d698dULL, 0x47cdebccb908e0f4ULL,
+ 0xc67efa94e9567b7fULL, 0xb9100a5cd963f206ULL,
+ 0x57dd12c379682177ULL, 0x28b3e20b495da80eULL,
+ 0xa900f35319033385ULL, 0xd66e039b2936bafcULL,
+ 0x9ebff7b0e12997f8ULL, 0xe1d10778d11c1e81ULL,
+ 0x606216208142850aULL, 0x1f0ce6e8b1770c73ULL,
+ 0x8921014c99c2b083ULL, 0xf64ff184a9f739faULL,
+ 0x77fce0dcf9a9a271ULL, 0x08921014c99c2b08ULL,
+ 0x4043e43f0183060cULL, 0x3f2d14f731b68f75ULL,
+ 0xbe9e05af61e814feULL, 0xc1f0f56751dd9d87ULL,
+ 0x2f3dedf8f1d64ef6ULL, 0x50531d30c1e3c78fULL,
+ 0xd1e00c6891bd5c04ULL, 0xae8efca0a188d57dULL,
+ 0xe65f088b6997f879ULL, 0x9931f84359a27100ULL,
+ 0x1882e91b09fcea8bULL, 0x67ec19d339c963f2ULL,
+ 0xd75adabd7a6e2d6fULL, 0xa8342a754a5ba416ULL,
+ 0x29873b2d1a053f9dULL, 0x56e9cbe52a30b6e4ULL,
+ 0x1e383fcee22f9be0ULL, 0x6156cf06d21a1299ULL,
+ 0xe0e5de5e82448912ULL, 0x9f8b2e96b271006bULL,
+ 0x71463609127ad31aULL, 0x0e28c6c1224f5a63ULL,
+ 0x8f9bd7997211c1e8ULL, 0xf0f5275142244891ULL,
+ 0xb824d37a8a3b6595ULL, 0xc74a23b2ba0eececULL,
+ 0x46f932eaea507767ULL, 0x3997c222da65fe1eULL,
+ 0xafba2586f2d042eeULL, 0xd0d4d54ec2e5cb97ULL,
+ 0x5167c41692bb501cULL, 0x2e0934dea28ed965ULL,
+ 0x66d8c0f56a91f461ULL, 0x19b6303d5aa47d18ULL,
+ 0x980521650afae693ULL, 0xe76bd1ad3acf6feaULL,
+ 0x09a6c9329ac4bc9bULL, 0x76c839faaaf135e2ULL,
+ 0xf77b28a2faafae69ULL, 0x8815d86aca9a2710ULL,
+ 0xc0c42c4102850a14ULL, 0xbfaadc8932b0836dULL,
+ 0x3e19cdd162ee18e6ULL, 0x41773d1952db919fULL,
+ 0x269b24ca6b12f26dULL, 0x59f5d4025b277b14ULL,
+ 0xd846c55a0b79e09fULL, 0xa72835923b4c69e6ULL,
+ 0xeff9c1b9f35344e2ULL, 0x90973171c366cd9bULL,
+ 0x1124202993385610ULL, 0x6e4ad0e1a30ddf69ULL,
+ 0x8087c87e03060c18ULL, 0xffe938b633338561ULL,
+ 0x7e5a29ee636d1eeaULL, 0x0134d92653589793ULL,
+ 0x49e52d0d9b47ba97ULL, 0x368bddc5ab7233eeULL,
+ 0xb738cc9dfb2ca865ULL, 0xc8563c55cb19211cULL,
+ 0x5e7bdbf1e3ac9decULL, 0x21152b39d3991495ULL,
+ 0xa0a63a6183c78f1eULL, 0xdfc8caa9b3f20667ULL,
+ 0x97193e827bed2b63ULL, 0xe877ce4a4bd8a21aULL,
+ 0x69c4df121b863991ULL, 0x16aa2fda2bb3b0e8ULL,
+ 0xf86737458bb86399ULL, 0x8709c78dbb8deae0ULL,
+ 0x06bad6d5ebd3716bULL, 0x79d4261ddbe6f812ULL,
+ 0x3105d23613f9d516ULL, 0x4e6b22fe23cc5c6fULL,
+ 0xcfd833a67392c7e4ULL, 0xb0b6c36e43a74e9dULL,
+ 0x9a6c9329ac4bc9b5ULL, 0xe50263e19c7e40ccULL,
+ 0x64b172b9cc20db47ULL, 0x1bdf8271fc15523eULL,
+ 0x530e765a340a7f3aULL, 0x2c608692043ff643ULL,
+ 0xadd397ca54616dc8ULL, 0xd2bd67026454e4b1ULL,
+ 0x3c707f9dc45f37c0ULL, 0x431e8f55f46abeb9ULL,
+ 0xc2ad9e0da4342532ULL, 0xbdc36ec59401ac4bULL,
+ 0xf5129aee5c1e814fULL, 0x8a7c6a266c2b0836ULL,
+ 0x0bcf7b7e3c7593bdULL, 0x74a18bb60c401ac4ULL,
+ 0xe28c6c1224f5a634ULL, 0x9de29cda14c02f4dULL,
+ 0x1c518d82449eb4c6ULL, 0x633f7d4a74ab3dbfULL,
+ 0x2bee8961bcb410bbULL, 0x548079a98c8199c2ULL,
+ 0xd53368f1dcdf0249ULL, 0xaa5d9839ecea8b30ULL,
+ 0x449080a64ce15841ULL, 0x3bfe706e7cd4d138ULL,
+ 0xba4d61362c8a4ab3ULL, 0xc52391fe1cbfc3caULL,
+ 0x8df265d5d4a0eeceULL, 0xf29c951de49567b7ULL,
+ 0x732f8445b4cbfc3cULL, 0x0c41748d84fe7545ULL,
+ 0x6bad6d5ebd3716b7ULL, 0x14c39d968d029fceULL,
+ 0x95708ccedd5c0445ULL, 0xea1e7c06ed698d3cULL,
+ 0xa2cf882d2576a038ULL, 0xdda178e515432941ULL,
+ 0x5c1269bd451db2caULL, 0x237c997575283bb3ULL,
+ 0xcdb181ead523e8c2ULL, 0xb2df7122e51661bbULL,
+ 0x336c607ab548fa30ULL, 0x4c0290b2857d7349ULL,
+ 0x04d364994d625e4dULL, 0x7bbd94517d57d734ULL,
+ 0xfa0e85092d094cbfULL, 0x856075c11d3cc5c6ULL,
+ 0x134d926535897936ULL, 0x6c2362ad05bcf04fULL,
+ 0xed9073f555e26bc4ULL, 0x92fe833d65d7e2bdULL,
+ 0xda2f7716adc8cfb9ULL, 0xa54187de9dfd46c0ULL,
+ 0x24f29686cda3dd4bULL, 0x5b9c664efd965432ULL,
+ 0xb5517ed15d9d8743ULL, 0xca3f8e196da80e3aULL,
+ 0x4b8c9f413df695b1ULL, 0x34e26f890dc31cc8ULL,
+ 0x7c339ba2c5dc31ccULL, 0x035d6b6af5e9b8b5ULL,
+ 0x82ee7a32a5b7233eULL, 0xfd808afa9582aa47ULL,
+ 0x4d364994d625e4daULL, 0x3258b95ce6106da3ULL,
+ 0xb3eba804b64ef628ULL, 0xcc8558cc867b7f51ULL,
+ 0x8454ace74e645255ULL, 0xfb3a5c2f7e51db2cULL,
+ 0x7a894d772e0f40a7ULL, 0x05e7bdbf1e3ac9deULL,
+ 0xeb2aa520be311aafULL, 0x944455e88e0493d6ULL,
+ 0x15f744b0de5a085dULL, 0x6a99b478ee6f8124ULL,
+ 0x224840532670ac20ULL, 0x5d26b09b16452559ULL,
+ 0xdc95a1c3461bbed2ULL, 0xa3fb510b762e37abULL,
+ 0x35d6b6af5e9b8b5bULL, 0x4ab846676eae0222ULL,
+ 0xcb0b573f3ef099a9ULL, 0xb465a7f70ec510d0ULL,
+ 0xfcb453dcc6da3dd4ULL, 0x83daa314f6efb4adULL,
+ 0x0269b24ca6b12f26ULL, 0x7d0742849684a65fULL,
+ 0x93ca5a1b368f752eULL, 0xeca4aad306bafc57ULL,
+ 0x6d17bb8b56e467dcULL, 0x12794b4366d1eea5ULL,
+ 0x5aa8bf68aecec3a1ULL, 0x25c64fa09efb4ad8ULL,
+ 0xa4755ef8cea5d153ULL, 0xdb1bae30fe90582aULL,
+ 0xbcf7b7e3c7593bd8ULL, 0xc399472bf76cb2a1ULL,
+ 0x422a5673a732292aULL, 0x3d44a6bb9707a053ULL,
+ 0x759552905f188d57ULL, 0x0afba2586f2d042eULL,
+ 0x8b48b3003f739fa5ULL, 0xf42643c80f4616dcULL,
+ 0x1aeb5b57af4dc5adULL, 0x6585ab9f9f784cd4ULL,
+ 0xe436bac7cf26d75fULL, 0x9b584a0fff135e26ULL,
+ 0xd389be24370c7322ULL, 0xace74eec0739fa5bULL,
+ 0x2d545fb4576761d0ULL, 0x523aaf7c6752e8a9ULL,
+ 0xc41748d84fe75459ULL, 0xbb79b8107fd2dd20ULL,
+ 0x3acaa9482f8c46abULL, 0x45a459801fb9cfd2ULL,
+ 0x0d75adabd7a6e2d6ULL, 0x721b5d63e7936bafULL,
+ 0xf3a84c3bb7cdf024ULL, 0x8cc6bcf387f8795dULL,
+ 0x620ba46c27f3aa2cULL, 0x1d6554a417c62355ULL,
+ 0x9cd645fc4798b8deULL, 0xe3b8b53477ad31a7ULL,
+ 0xab69411fbfb21ca3ULL, 0xd407b1d78f8795daULL,
+ 0x55b4a08fdfd90e51ULL, 0x2ada5047efec8728ULL,
+};
--
2.25.1
