crc64: use crc64 routines defined in Linux kernel

This patch copies and modifies the crc64 routines from Linux kernel
source code. Now bcache-tools will use the unified crc64 code defined
in Linux source code lib/crc64.c, to make the maintenance simplier.

Signed-off-by: Coly Li <colyli@suse.de>

4 files changed, 199 insertions, 133 deletions

diff --git a/Makefile b/Makefile
index 882a170e..43598660 100644
--- a/Makefile
+++ b/Makefile
@@ -24,18 +24,18 @@ bcache-test: LDLIBS += `pkg-config --libs openssl` -lm
 
 make-bcache: LDLIBS += `pkg-config --libs uuid blkid smartcols`
 make-bcache: CFLAGS += `pkg-config --cflags uuid blkid smartcols`
-make-bcache: make.o bcache-crc.o lib.o
+make-bcache: make.o crc64.o lib.o
 
 probe-bcache: LDLIBS += `pkg-config --libs uuid blkid`
 probe-bcache: CFLAGS += `pkg-config --cflags uuid blkid`
 
 bcache-super-show: LDLIBS += `pkg-config --libs uuid`
 bcache-super-show: CFLAGS += -std=gnu99
-bcache-super-show: bcache-crc.o
+bcache-super-show: crc64.o
 
 bcache-register: bcache-register.o
 
 bcache: CFLAGS += `pkg-config --cflags blkid uuid smartcols`
 bcache: LDLIBS += `pkg-config --libs blkid uuid smartcols`
 bcache: CFLAGS += -std=gnu99
-bcache: bcache.o bcache-crc.o lib.o make.o
+bcache: crc64.o lib.o make.o
diff --git a/bcache-crc.c b/bcache-crc.c
deleted file mode 100644
index 8b4b9866..00000000
--- a/bcache-crc.c
+++ /dev/null
@@ -1,129 +0,0 @@
-#define _GNU_SOURCE
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <unistd.h>
-
-/*
- * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group (Any
- * use permitted, subject to terms of PostgreSQL license; see.)
-
- * If we have a 64-bit integer type, then a 64-bit CRC looks just like the
- * usual sort of implementation. (See Ross Williams' excellent introduction
- * A PAINLESS GUIDE TO CRC ERROR DETECTION ALGORITHMS, available from
- * ftp://ftp.rocksoft.com/papers/crc_v3.txt or several other net sites.)
- * If we have no working 64-bit type, then fake it with two 32-bit registers.
- *
- * The present implementation is a normal (not "reflected", in Williams'
- * terms) 64-bit CRC, using initial all-ones register contents and a final
- * bit inversion. The chosen polynomial is borrowed from the DLT1 spec
- * (ECMA-182, available from http://www.ecma.ch/ecma1/STAND/ECMA-182.HTM):
- *
- * x^64 + x^62 + x^57 + x^55 + x^54 + x^53 + x^52 + x^47 + x^46 + x^45 +
- * x^40 + x^39 + x^38 + x^37 + x^35 + x^33 + x^32 + x^31 + x^29 + x^27 +
- * x^24 + x^23 + x^22 + x^21 + x^19 + x^17 + x^13 + x^12 + x^10 + x^9 +
- * x^7 + x^4 + x + 1
-*/
-
-static const uint64_t crc_table[256] = {
-	0x0000000000000000ULL, 0x42F0E1EBA9EA3693ULL, 0x85E1C3D753D46D26ULL,
-	0xC711223CFA3E5BB5ULL, 0x493366450E42ECDFULL, 0x0BC387AEA7A8DA4CULL,
-	0xCCD2A5925D9681F9ULL, 0x8E224479F47CB76AULL, 0x9266CC8A1C85D9BEULL,
-	0xD0962D61B56FEF2DULL, 0x17870F5D4F51B498ULL, 0x5577EEB6E6BB820BULL,
-	0xDB55AACF12C73561ULL, 0x99A54B24BB2D03F2ULL, 0x5EB4691841135847ULL,
-	0x1C4488F3E8F96ED4ULL, 0x663D78FF90E185EFULL, 0x24CD9914390BB37CULL,
-	0xE3DCBB28C335E8C9ULL, 0xA12C5AC36ADFDE5AULL, 0x2F0E1EBA9EA36930ULL,
-	0x6DFEFF5137495FA3ULL, 0xAAEFDD6DCD770416ULL, 0xE81F3C86649D3285ULL,
-	0xF45BB4758C645C51ULL, 0xB6AB559E258E6AC2ULL, 0x71BA77A2DFB03177ULL,
-	0x334A9649765A07E4ULL, 0xBD68D2308226B08EULL, 0xFF9833DB2BCC861DULL,
-	0x388911E7D1F2DDA8ULL, 0x7A79F00C7818EB3BULL, 0xCC7AF1FF21C30BDEULL,
-	0x8E8A101488293D4DULL, 0x499B3228721766F8ULL, 0x0B6BD3C3DBFD506BULL,
-	0x854997BA2F81E701ULL, 0xC7B97651866BD192ULL, 0x00A8546D7C558A27ULL,
-	0x4258B586D5BFBCB4ULL, 0x5E1C3D753D46D260ULL, 0x1CECDC9E94ACE4F3ULL,
-	0xDBFDFEA26E92BF46ULL, 0x990D1F49C77889D5ULL, 0x172F5B3033043EBFULL,
-	0x55DFBADB9AEE082CULL, 0x92CE98E760D05399ULL, 0xD03E790CC93A650AULL,
-	0xAA478900B1228E31ULL, 0xE8B768EB18C8B8A2ULL, 0x2FA64AD7E2F6E317ULL,
-	0x6D56AB3C4B1CD584ULL, 0xE374EF45BF6062EEULL, 0xA1840EAE168A547DULL,
-	0x66952C92ECB40FC8ULL, 0x2465CD79455E395BULL, 0x3821458AADA7578FULL,
-	0x7AD1A461044D611CULL, 0xBDC0865DFE733AA9ULL, 0xFF3067B657990C3AULL,
-	0x711223CFA3E5BB50ULL, 0x33E2C2240A0F8DC3ULL, 0xF4F3E018F031D676ULL,
-	0xB60301F359DBE0E5ULL, 0xDA050215EA6C212FULL, 0x98F5E3FE438617BCULL,
-	0x5FE4C1C2B9B84C09ULL, 0x1D14202910527A9AULL, 0x93366450E42ECDF0ULL,
-	0xD1C685BB4DC4FB63ULL, 0x16D7A787B7FAA0D6ULL, 0x5427466C1E109645ULL,
-	0x4863CE9FF6E9F891ULL, 0x0A932F745F03CE02ULL, 0xCD820D48A53D95B7ULL,
-	0x8F72ECA30CD7A324ULL, 0x0150A8DAF8AB144EULL, 0x43A04931514122DDULL,
-	0x84B16B0DAB7F7968ULL, 0xC6418AE602954FFBULL, 0xBC387AEA7A8DA4C0ULL,
-	0xFEC89B01D3679253ULL, 0x39D9B93D2959C9E6ULL, 0x7B2958D680B3FF75ULL,
-	0xF50B1CAF74CF481FULL, 0xB7FBFD44DD257E8CULL, 0x70EADF78271B2539ULL,
-	0x321A3E938EF113AAULL, 0x2E5EB66066087D7EULL, 0x6CAE578BCFE24BEDULL,
-	0xABBF75B735DC1058ULL, 0xE94F945C9C3626CBULL, 0x676DD025684A91A1ULL,
-	0x259D31CEC1A0A732ULL, 0xE28C13F23B9EFC87ULL, 0xA07CF2199274CA14ULL,
-	0x167FF3EACBAF2AF1ULL, 0x548F120162451C62ULL, 0x939E303D987B47D7ULL,
-	0xD16ED1D631917144ULL, 0x5F4C95AFC5EDC62EULL, 0x1DBC74446C07F0BDULL,
-	0xDAAD56789639AB08ULL, 0x985DB7933FD39D9BULL, 0x84193F60D72AF34FULL,
-	0xC6E9DE8B7EC0C5DCULL, 0x01F8FCB784FE9E69ULL, 0x43081D5C2D14A8FAULL,
-	0xCD2A5925D9681F90ULL, 0x8FDAB8CE70822903ULL, 0x48CB9AF28ABC72B6ULL,
-	0x0A3B7B1923564425ULL, 0x70428B155B4EAF1EULL, 0x32B26AFEF2A4998DULL,
-	0xF5A348C2089AC238ULL, 0xB753A929A170F4ABULL, 0x3971ED50550C43C1ULL,
-	0x7B810CBBFCE67552ULL, 0xBC902E8706D82EE7ULL, 0xFE60CF6CAF321874ULL,
-	0xE224479F47CB76A0ULL, 0xA0D4A674EE214033ULL, 0x67C58448141F1B86ULL,
-	0x253565A3BDF52D15ULL, 0xAB1721DA49899A7FULL, 0xE9E7C031E063ACECULL,
-	0x2EF6E20D1A5DF759ULL, 0x6C0603E6B3B7C1CAULL, 0xF6FAE5C07D3274CDULL,
-	0xB40A042BD4D8425EULL, 0x731B26172EE619EBULL, 0x31EBC7FC870C2F78ULL,
-	0xBFC9838573709812ULL, 0xFD39626EDA9AAE81ULL, 0x3A28405220A4F534ULL,
-	0x78D8A1B9894EC3A7ULL, 0x649C294A61B7AD73ULL, 0x266CC8A1C85D9BE0ULL,
-	0xE17DEA9D3263C055ULL, 0xA38D0B769B89F6C6ULL, 0x2DAF4F0F6FF541ACULL,
-	0x6F5FAEE4C61F773FULL, 0xA84E8CD83C212C8AULL, 0xEABE6D3395CB1A19ULL,
-	0x90C79D3FEDD3F122ULL, 0xD2377CD44439C7B1ULL, 0x15265EE8BE079C04ULL,
-	0x57D6BF0317EDAA97ULL, 0xD9F4FB7AE3911DFDULL, 0x9B041A914A7B2B6EULL,
-	0x5C1538ADB04570DBULL, 0x1EE5D94619AF4648ULL, 0x02A151B5F156289CULL,
-	0x4051B05E58BC1E0FULL, 0x87409262A28245BAULL, 0xC5B073890B687329ULL,
-	0x4B9237F0FF14C443ULL, 0x0962D61B56FEF2D0ULL, 0xCE73F427ACC0A965ULL,
-	0x8C8315CC052A9FF6ULL, 0x3A80143F5CF17F13ULL, 0x7870F5D4F51B4980ULL,
-	0xBF61D7E80F251235ULL, 0xFD913603A6CF24A6ULL, 0x73B3727A52B393CCULL,
-	0x31439391FB59A55FULL, 0xF652B1AD0167FEEAULL, 0xB4A25046A88DC879ULL,
-	0xA8E6D8B54074A6ADULL, 0xEA16395EE99E903EULL, 0x2D071B6213A0CB8BULL,
-	0x6FF7FA89BA4AFD18ULL, 0xE1D5BEF04E364A72ULL, 0xA3255F1BE7DC7CE1ULL,
-	0x64347D271DE22754ULL, 0x26C49CCCB40811C7ULL, 0x5CBD6CC0CC10FAFCULL,
-	0x1E4D8D2B65FACC6FULL, 0xD95CAF179FC497DAULL, 0x9BAC4EFC362EA149ULL,
-	0x158E0A85C2521623ULL, 0x577EEB6E6BB820B0ULL, 0x906FC95291867B05ULL,
-	0xD29F28B9386C4D96ULL, 0xCEDBA04AD0952342ULL, 0x8C2B41A1797F15D1ULL,
-	0x4B3A639D83414E64ULL, 0x09CA82762AAB78F7ULL, 0x87E8C60FDED7CF9DULL,
-	0xC51827E4773DF90EULL, 0x020905D88D03A2BBULL, 0x40F9E43324E99428ULL,
-	0x2CFFE7D5975E55E2ULL, 0x6E0F063E3EB46371ULL, 0xA91E2402C48A38C4ULL,
-	0xEBEEC5E96D600E57ULL, 0x65CC8190991CB93DULL, 0x273C607B30F68FAEULL,
-	0xE02D4247CAC8D41BULL, 0xA2DDA3AC6322E288ULL, 0xBE992B5F8BDB8C5CULL,
-	0xFC69CAB42231BACFULL, 0x3B78E888D80FE17AULL, 0x7988096371E5D7E9ULL,
-	0xF7AA4D1A85996083ULL, 0xB55AACF12C735610ULL, 0x724B8ECDD64D0DA5ULL,
-	0x30BB6F267FA73B36ULL, 0x4AC29F2A07BFD00DULL, 0x08327EC1AE55E69EULL,
-	0xCF235CFD546BBD2BULL, 0x8DD3BD16FD818BB8ULL, 0x03F1F96F09FD3CD2ULL,
-	0x41011884A0170A41ULL, 0x86103AB85A2951F4ULL, 0xC4E0DB53F3C36767ULL,
-	0xD8A453A01B3A09B3ULL, 0x9A54B24BB2D03F20ULL, 0x5D45907748EE6495ULL,
-	0x1FB5719CE1045206ULL, 0x919735E51578E56CULL, 0xD367D40EBC92D3FFULL,
-	0x1476F63246AC884AULL, 0x568617D9EF46BED9ULL, 0xE085162AB69D5E3CULL,
-	0xA275F7C11F7768AFULL, 0x6564D5FDE549331AULL, 0x279434164CA30589ULL,
-	0xA9B6706FB8DFB2E3ULL, 0xEB46918411358470ULL, 0x2C57B3B8EB0BDFC5ULL,
-	0x6EA7525342E1E956ULL, 0x72E3DAA0AA188782ULL, 0x30133B4B03F2B111ULL,
-	0xF7021977F9CCEAA4ULL, 0xB5F2F89C5026DC37ULL, 0x3BD0BCE5A45A6B5DULL,
-	0x79205D0E0DB05DCEULL, 0xBE317F32F78E067BULL, 0xFCC19ED95E6430E8ULL,
-	0x86B86ED5267CDBD3ULL, 0xC4488F3E8F96ED40ULL, 0x0359AD0275A8B6F5ULL,
-	0x41A94CE9DC428066ULL, 0xCF8B0890283E370CULL, 0x8D7BE97B81D4019FULL,
-	0x4A6ACB477BEA5A2AULL, 0x089A2AACD2006CB9ULL, 0x14DEA25F3AF9026DULL,
-	0x562E43B4931334FEULL, 0x913F6188692D6F4BULL, 0xD3CF8063C0C759D8ULL,
-	0x5DEDC41A34BBEEB2ULL, 0x1F1D25F19D51D821ULL, 0xD80C07CD676F8394ULL,
-	0x9AFCE626CE85B507ULL
-};
-
-uint64_t crc64(const void *_data, size_t len)
-{
-	uint64_t crc = 0xFFFFFFFFFFFFFFFFULL;
-	const unsigned char *data = _data;
-
-	while (len--) {
-		int i = ((int) (crc >> 56) ^ *data++) & 0xFF;
-		crc = crc_table[i] ^ (crc << 8);
-	}
-
-	return crc ^ 0xFFFFFFFFFFFFFFFFULL;
-}
diff --git a/bcache.h b/bcache.h
index 61e42524..c83f8382 100644
--- a/bcache.h
+++ b/bcache.h
@@ -115,7 +115,7 @@ BITMASK(BDEV_STATE,		struct cache_sb, flags, 61, 2);
 #define BDEV_STATE_DIRTY	2U
 #define BDEV_STATE_STALE	3U
 
-uint64_t crc64(const void *_data, size_t len);
+uint64_t crc64(const void *data, size_t len);
 
 #define node(i, j)		((void *) ((i)->d + (j)))
 #define end(i)			node(i, (i)->keys)
diff --git a/crc64.c b/crc64.c
new file mode 100644
index 00000000..cfe499da
--- /dev/null
+++ b/crc64.c
@@ -0,0 +1,195 @@
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+
+/*
+ * Normal 64-bit CRC calculation.
+ *
+ * This is a basic crc64 implementation following ECMA-182 specification,
+ * which can be found from,
+ * http://www.ecma-international.org/publications/standards/Ecma-182.htm
+ *
+ * Dr. Ross N. Williams has a great document to introduce the idea of CRC
+ * algorithm, here the CRC64 code is also inspired by the table-driven
+ * algorithm and detail example from this paper. This paper can be found
+ * from,
+ * http://www.ross.net/crc/download/crc_v3.txt
+ *
+ * crc64table[256] is the lookup table of a table-driven 64-bit CRC
+ * calculation, which is generated by gen_crc64table.c in kernel build
+ * time. The polynomial of crc64 arithmetic is from ECMA-182 specification
+ * as well, which is defined as,
+ *
+ * x^64 + x^62 + x^57 + x^55 + x^54 + x^53 + x^52 + x^47 + x^46 + x^45 +
+ * x^40 + x^39 + x^38 + x^37 + x^35 + x^33 + x^32 + x^31 + x^29 + x^27 +
+ * x^24 + x^23 + x^22 + x^21 + x^19 + x^17 + x^13 + x^12 + x^10 + x^9 +
+ * x^7 + x^4 + x + 1
+ *
+ * crc64table[256] is generated by output of gen_crc64table from Linux
+ * kernel source code lib/gen_crc64table.c, crc64_be() is also copied
+ * and modified from Linux kernel source code lib/crc64.c.
+ *
+ */
+
+static const uint64_t crc64table[256] = {
+	0x0000000000000000ULL, 	0x42f0e1eba9ea3693ULL,
+	0x85e1c3d753d46d26ULL, 	0xc711223cfa3e5bb5ULL,
+	0x493366450e42ecdfULL, 	0x0bc387aea7a8da4cULL,
+	0xccd2a5925d9681f9ULL, 	0x8e224479f47cb76aULL,
+	0x9266cc8a1c85d9beULL, 	0xd0962d61b56fef2dULL,
+	0x17870f5d4f51b498ULL, 	0x5577eeb6e6bb820bULL,
+	0xdb55aacf12c73561ULL, 	0x99a54b24bb2d03f2ULL,
+	0x5eb4691841135847ULL, 	0x1c4488f3e8f96ed4ULL,
+	0x663d78ff90e185efULL, 	0x24cd9914390bb37cULL,
+	0xe3dcbb28c335e8c9ULL, 	0xa12c5ac36adfde5aULL,
+	0x2f0e1eba9ea36930ULL, 	0x6dfeff5137495fa3ULL,
+	0xaaefdd6dcd770416ULL, 	0xe81f3c86649d3285ULL,
+	0xf45bb4758c645c51ULL, 	0xb6ab559e258e6ac2ULL,
+	0x71ba77a2dfb03177ULL, 	0x334a9649765a07e4ULL,
+	0xbd68d2308226b08eULL, 	0xff9833db2bcc861dULL,
+	0x388911e7d1f2dda8ULL, 	0x7a79f00c7818eb3bULL,
+	0xcc7af1ff21c30bdeULL, 	0x8e8a101488293d4dULL,
+	0x499b3228721766f8ULL, 	0x0b6bd3c3dbfd506bULL,
+	0x854997ba2f81e701ULL, 	0xc7b97651866bd192ULL,
+	0x00a8546d7c558a27ULL, 	0x4258b586d5bfbcb4ULL,
+	0x5e1c3d753d46d260ULL, 	0x1cecdc9e94ace4f3ULL,
+	0xdbfdfea26e92bf46ULL, 	0x990d1f49c77889d5ULL,
+	0x172f5b3033043ebfULL, 	0x55dfbadb9aee082cULL,
+	0x92ce98e760d05399ULL, 	0xd03e790cc93a650aULL,
+	0xaa478900b1228e31ULL, 	0xe8b768eb18c8b8a2ULL,
+	0x2fa64ad7e2f6e317ULL, 	0x6d56ab3c4b1cd584ULL,
+	0xe374ef45bf6062eeULL, 	0xa1840eae168a547dULL,
+	0x66952c92ecb40fc8ULL, 	0x2465cd79455e395bULL,
+	0x3821458aada7578fULL, 	0x7ad1a461044d611cULL,
+	0xbdc0865dfe733aa9ULL, 	0xff3067b657990c3aULL,
+	0x711223cfa3e5bb50ULL, 	0x33e2c2240a0f8dc3ULL,
+	0xf4f3e018f031d676ULL, 	0xb60301f359dbe0e5ULL,
+	0xda050215ea6c212fULL, 	0x98f5e3fe438617bcULL,
+	0x5fe4c1c2b9b84c09ULL, 	0x1d14202910527a9aULL,
+	0x93366450e42ecdf0ULL, 	0xd1c685bb4dc4fb63ULL,
+	0x16d7a787b7faa0d6ULL, 	0x5427466c1e109645ULL,
+	0x4863ce9ff6e9f891ULL, 	0x0a932f745f03ce02ULL,
+	0xcd820d48a53d95b7ULL, 	0x8f72eca30cd7a324ULL,
+	0x0150a8daf8ab144eULL, 	0x43a04931514122ddULL,
+	0x84b16b0dab7f7968ULL, 	0xc6418ae602954ffbULL,
+	0xbc387aea7a8da4c0ULL, 	0xfec89b01d3679253ULL,
+	0x39d9b93d2959c9e6ULL, 	0x7b2958d680b3ff75ULL,
+	0xf50b1caf74cf481fULL, 	0xb7fbfd44dd257e8cULL,
+	0x70eadf78271b2539ULL, 	0x321a3e938ef113aaULL,
+	0x2e5eb66066087d7eULL, 	0x6cae578bcfe24bedULL,
+	0xabbf75b735dc1058ULL, 	0xe94f945c9c3626cbULL,
+	0x676dd025684a91a1ULL, 	0x259d31cec1a0a732ULL,
+	0xe28c13f23b9efc87ULL, 	0xa07cf2199274ca14ULL,
+	0x167ff3eacbaf2af1ULL, 	0x548f120162451c62ULL,
+	0x939e303d987b47d7ULL, 	0xd16ed1d631917144ULL,
+	0x5f4c95afc5edc62eULL, 	0x1dbc74446c07f0bdULL,
+	0xdaad56789639ab08ULL, 	0x985db7933fd39d9bULL,
+	0x84193f60d72af34fULL, 	0xc6e9de8b7ec0c5dcULL,
+	0x01f8fcb784fe9e69ULL, 	0x43081d5c2d14a8faULL,
+	0xcd2a5925d9681f90ULL, 	0x8fdab8ce70822903ULL,
+	0x48cb9af28abc72b6ULL, 	0x0a3b7b1923564425ULL,
+	0x70428b155b4eaf1eULL, 	0x32b26afef2a4998dULL,
+	0xf5a348c2089ac238ULL, 	0xb753a929a170f4abULL,
+	0x3971ed50550c43c1ULL, 	0x7b810cbbfce67552ULL,
+	0xbc902e8706d82ee7ULL, 	0xfe60cf6caf321874ULL,
+	0xe224479f47cb76a0ULL, 	0xa0d4a674ee214033ULL,
+	0x67c58448141f1b86ULL, 	0x253565a3bdf52d15ULL,
+	0xab1721da49899a7fULL, 	0xe9e7c031e063acecULL,
+	0x2ef6e20d1a5df759ULL, 	0x6c0603e6b3b7c1caULL,
+	0xf6fae5c07d3274cdULL, 	0xb40a042bd4d8425eULL,
+	0x731b26172ee619ebULL, 	0x31ebc7fc870c2f78ULL,
+	0xbfc9838573709812ULL, 	0xfd39626eda9aae81ULL,
+	0x3a28405220a4f534ULL, 	0x78d8a1b9894ec3a7ULL,
+	0x649c294a61b7ad73ULL, 	0x266cc8a1c85d9be0ULL,
+	0xe17dea9d3263c055ULL, 	0xa38d0b769b89f6c6ULL,
+	0x2daf4f0f6ff541acULL, 	0x6f5faee4c61f773fULL,
+	0xa84e8cd83c212c8aULL, 	0xeabe6d3395cb1a19ULL,
+	0x90c79d3fedd3f122ULL, 	0xd2377cd44439c7b1ULL,
+	0x15265ee8be079c04ULL, 	0x57d6bf0317edaa97ULL,
+	0xd9f4fb7ae3911dfdULL, 	0x9b041a914a7b2b6eULL,
+	0x5c1538adb04570dbULL, 	0x1ee5d94619af4648ULL,
+	0x02a151b5f156289cULL, 	0x4051b05e58bc1e0fULL,
+	0x87409262a28245baULL, 	0xc5b073890b687329ULL,
+	0x4b9237f0ff14c443ULL, 	0x0962d61b56fef2d0ULL,
+	0xce73f427acc0a965ULL, 	0x8c8315cc052a9ff6ULL,
+	0x3a80143f5cf17f13ULL, 	0x7870f5d4f51b4980ULL,
+	0xbf61d7e80f251235ULL, 	0xfd913603a6cf24a6ULL,
+	0x73b3727a52b393ccULL, 	0x31439391fb59a55fULL,
+	0xf652b1ad0167feeaULL, 	0xb4a25046a88dc879ULL,
+	0xa8e6d8b54074a6adULL, 	0xea16395ee99e903eULL,
+	0x2d071b6213a0cb8bULL, 	0x6ff7fa89ba4afd18ULL,
+	0xe1d5bef04e364a72ULL, 	0xa3255f1be7dc7ce1ULL,
+	0x64347d271de22754ULL, 	0x26c49cccb40811c7ULL,
+	0x5cbd6cc0cc10fafcULL, 	0x1e4d8d2b65facc6fULL,
+	0xd95caf179fc497daULL, 	0x9bac4efc362ea149ULL,
+	0x158e0a85c2521623ULL, 	0x577eeb6e6bb820b0ULL,
+	0x906fc95291867b05ULL, 	0xd29f28b9386c4d96ULL,
+	0xcedba04ad0952342ULL, 	0x8c2b41a1797f15d1ULL,
+	0x4b3a639d83414e64ULL, 	0x09ca82762aab78f7ULL,
+	0x87e8c60fded7cf9dULL, 	0xc51827e4773df90eULL,
+	0x020905d88d03a2bbULL, 	0x40f9e43324e99428ULL,
+	0x2cffe7d5975e55e2ULL, 	0x6e0f063e3eb46371ULL,
+	0xa91e2402c48a38c4ULL, 	0xebeec5e96d600e57ULL,
+	0x65cc8190991cb93dULL, 	0x273c607b30f68faeULL,
+	0xe02d4247cac8d41bULL, 	0xa2dda3ac6322e288ULL,
+	0xbe992b5f8bdb8c5cULL, 	0xfc69cab42231bacfULL,
+	0x3b78e888d80fe17aULL, 	0x7988096371e5d7e9ULL,
+	0xf7aa4d1a85996083ULL, 	0xb55aacf12c735610ULL,
+	0x724b8ecdd64d0da5ULL, 	0x30bb6f267fa73b36ULL,
+	0x4ac29f2a07bfd00dULL, 	0x08327ec1ae55e69eULL,
+	0xcf235cfd546bbd2bULL, 	0x8dd3bd16fd818bb8ULL,
+	0x03f1f96f09fd3cd2ULL, 	0x41011884a0170a41ULL,
+	0x86103ab85a2951f4ULL, 	0xc4e0db53f3c36767ULL,
+	0xd8a453a01b3a09b3ULL, 	0x9a54b24bb2d03f20ULL,
+	0x5d45907748ee6495ULL, 	0x1fb5719ce1045206ULL,
+	0x919735e51578e56cULL, 	0xd367d40ebc92d3ffULL,
+	0x1476f63246ac884aULL, 	0x568617d9ef46bed9ULL,
+	0xe085162ab69d5e3cULL, 	0xa275f7c11f7768afULL,
+	0x6564d5fde549331aULL, 	0x279434164ca30589ULL,
+	0xa9b6706fb8dfb2e3ULL, 	0xeb46918411358470ULL,
+	0x2c57b3b8eb0bdfc5ULL, 	0x6ea7525342e1e956ULL,
+	0x72e3daa0aa188782ULL, 	0x30133b4b03f2b111ULL,
+	0xf7021977f9cceaa4ULL, 	0xb5f2f89c5026dc37ULL,
+	0x3bd0bce5a45a6b5dULL, 	0x79205d0e0db05dceULL,
+	0xbe317f32f78e067bULL, 	0xfcc19ed95e6430e8ULL,
+	0x86b86ed5267cdbd3ULL, 	0xc4488f3e8f96ed40ULL,
+	0x0359ad0275a8b6f5ULL, 	0x41a94ce9dc428066ULL,
+	0xcf8b0890283e370cULL, 	0x8d7be97b81d4019fULL,
+	0x4a6acb477bea5a2aULL, 	0x089a2aacd2006cb9ULL,
+	0x14dea25f3af9026dULL, 	0x562e43b4931334feULL,
+	0x913f6188692d6f4bULL, 	0xd3cf8063c0c759d8ULL,
+	0x5dedc41a34bbeeb2ULL, 	0x1f1d25f19d51d821ULL,
+	0xd80c07cd676f8394ULL, 	0x9afce626ce85b507ULL,
+};
+
+/**
+ * crc64_be - Calculate bitwise big-endian ECMA-182 CRC64
+ * @crc: seed value for computation. 0 or (u64)~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
+ */
+static uint64_t crc64_be(uint64_t crc, const void *p, size_t len)
+{
+        size_t i, t;
+
+        const unsigned char *_p = p;
+
+        for (i = 0; i < len; i++) {
+                t = ((crc >> 56) ^ (*_p++)) & 0xFF;
+                crc = crc64table[t] ^ (crc << 8);
+        }
+
+        return crc;
+}
+
+uint64_t crc64(const void *data, size_t len)
+{
+	uint64_t crc = 0xFFFFFFFFFFFFFFFFULL;
+
+	crc = crc64_be(crc, data, len);
+	return crc ^ 0xFFFFFFFFFFFFFFFFULL;
+}