[dragonfly.git] / sbin / hammer2 / icrc.c

/*-
 * Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
/*
 | iSCSI
 | $Id: isc_subr.c 560 2009-05-07 07:37:49Z danny $
 */

#include <sys/types.h>
#include <sys/uuid.h>

#include <vfs/hammer2/hammer2_disk.h>

/*****************************************************************/
/*                                                               */
/* CRC LOOKUP TABLE                                              */
/* ================                                              */
/* The following CRC lookup table was generated automagically    */
/* by the Rocksoft^tm Model CRC Algorithm Table Generation       */
/* Program V1.0 using the following model parameters:            */
/*                                                               */
/*    Width   : 4 bytes.                                         */
/*    Poly    : 0x1EDC6F41L                                      */
/*    Reverse : TRUE.                                            */
/*                                                               */
/* For more information on the Rocksoft^tm Model CRC Algorithm,  */
/* see the document titled "A Painless Guide to CRC Error        */
/* Detection Algorithms" by Ross Williams                        */
/* (ross@guest.adelaide.edu.au.). This document is likely to be  */
/* in the FTP archive "ftp.adelaide.edu.au/pub/rocksoft".        */
/*                                                               */
/*****************************************************************/

static const uint32_t crc32Table[256] = {
    0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
    0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
    0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
    0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
    0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
    0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
    0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
    0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
    0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
    0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
    0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
    0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
    0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
    0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
    0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
    0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
    0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
    0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
    0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
    0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
    0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
    0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
    0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
    0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
    0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
    0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
    0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
    0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
    0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
    0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
    0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
    0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
    0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
    0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
    0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
    0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
    0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
    0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
    0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
    0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
    0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
    0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
    0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
    0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
    0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
    0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
    0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
    0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
    0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
    0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
    0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
    0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
    0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
    0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
    0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
    0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
    0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
    0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
    0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
    0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
    0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
    0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
    0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
    0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L
};

uint32_t
hammer2_icrc32(const void *buf, size_t size)
{
     const uint8_t *p = buf;
     uint32_t crc = 0;

     crc = crc ^ 0xffffffff;
     while (size--)
	  crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
     crc = crc ^ 0xffffffff;
     return crc;
}

uint32_t
hammer2_icrc32c(const void *buf, size_t size, uint32_t crc)
{
     const uint8_t *p = buf;

     crc = crc ^ 0xffffffff;
     while (size--)
	  crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
     crc = crc ^ 0xffffffff;
     return crc;
}
Commit	Line	Data
9ab15106 MD	1	/*-
	2	* Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il>
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	15	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	16	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	17	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	18	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	19	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	20	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	21	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	22	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	23	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	24	* SUCH DAMAGE.
	25	*
	26	*/
	27	/*
	28	\| iSCSI
	29	\| $Id: isc_subr.c 560 2009-05-07 07:37:49Z danny $
	30	*/
	31
	32	#include <sys/types.h>
	33	#include <sys/uuid.h>
	34
	35	#include <vfs/hammer2/hammer2_disk.h>
	36
	37	/*****************************************************************/
	38	/* */
	39	/* CRC LOOKUP TABLE */
	40	/* ================ */
	41	/* The following CRC lookup table was generated automagically */
	42	/* by the Rocksoft^tm Model CRC Algorithm Table Generation */
	43	/* Program V1.0 using the following model parameters: */
	44	/* */
	45	/* Width : 4 bytes. */
	46	/* Poly : 0x1EDC6F41L */
	47	/* Reverse : TRUE. */
	48	/* */
	49	/* For more information on the Rocksoft^tm Model CRC Algorithm, */
	50	/* see the document titled "A Painless Guide to CRC Error */
	51	/* Detection Algorithms" by Ross Williams */
	52	/* (ross@guest.adelaide.edu.au.). This document is likely to be */
	53	/* in the FTP archive "ftp.adelaide.edu.au/pub/rocksoft". */
	54	/* */
	55	/*****************************************************************/
	56
02454b3e	57	static const uint32_t crc32Table[256] = {
9ab15106 MD	58	0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
	59	0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
	60	0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
	61	0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
	62	0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
	63	0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
	64	0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
	65	0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
	66	0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
	67	0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
	68	0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
	69	0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
	70	0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
	71	0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
	72	0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
	73	0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
	74	0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
	75	0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
	76	0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
	77	0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
	78	0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
	79	0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
	80	0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
	81	0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
	82	0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
	83	0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
	84	0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
	85	0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
	86	0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
	87	0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
	88	0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
	89	0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
	90	0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
	91	0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
	92	0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
	93	0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
	94	0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
	95	0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
	96	0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
	97	0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
	98	0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
	99	0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
	100	0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
	101	0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
	102	0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
	103	0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
	104	0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
	105	0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
	106	0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
	107	0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
	108	0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
	109	0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
	110	0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
	111	0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
	112	0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
	113	0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
	114	0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
	115	0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
	116	0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
	117	0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
	118	0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
	119	0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
	120	0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
	121	0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L
122	};
123
124	uint32_t
125	hammer2_icrc32(const void *buf, size_t size)
126	{
127	const uint8_t *p = buf;
128	uint32_t crc = 0;
129
130	crc = crc ^ 0xffffffff;
131	while (size--)
132	crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
133	crc = crc ^ 0xffffffff;
134	return crc;
135	}
136
137	uint32_t
138	hammer2_icrc32c(const void *buf, size_t size, uint32_t crc)
139	{
140	const uint8_t *p = buf;
141
142	crc = crc ^ 0xffffffff;
143	while (size--)
144	crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
145	crc = crc ^ 0xffffffff;
146	return crc;
147	}