version 1.5, 2017/12/08 00:07:48
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version 1.6.36.1, 2024/10/10 23:53:00
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Line 12 terms:
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Line 12 terms:
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All of the documentation and software included in the ELWIX and AITNET |
All of the documentation and software included in the ELWIX and AITNET |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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Copyright 2004 - 2015 | Copyright 2004 - 2024 |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
Redistribution and use in source and binary forms, with or without |
Line 46 SUCH DAMAGE.
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Line 46 SUCH DAMAGE.
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#include "global.h" |
#include "global.h" |
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/* CRC16 poly */ |
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const u_short crc_16poly = 0x1021; |
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/* Adler module */ |
/* Adler module */ |
const u_int crc_modAdler = 0xFFF1L; |
const u_int crc_modAdler = 0xFFF1L; |
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Line 64 const crcPoly_t crc_Poly[] = {
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Line 67 const crcPoly_t crc_Poly[] = {
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{ 16, (u_int) 0x8005, "CRC-16-IBM" }, |
{ 16, (u_int) 0x8005, "CRC-16-IBM" }, |
{ 24, (u_int) 0x864CFB, "CRC-24-Radix64" }, |
{ 24, (u_int) 0x864CFB, "CRC-24-Radix64" }, |
{ 30, (u_int) 0x2030B9C7, "CRC-30-CDMA" }, |
{ 30, (u_int) 0x2030B9C7, "CRC-30-CDMA" }, |
{ 32, (u_int) 0x04C11DB7, "CRC-32-802.3" } | { 32, (u_int) 0x04C11DB7, "CRC-32-802.3" }, |
| { 16, (u_int) 0x1021, "CRC-16-CCITT" }, |
| { 16, (u_int) 0x8408, "CRC-16-XMODEM" } |
}; |
}; |
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Line 73 const crcPoly_t crc_Poly[] = {
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Line 78 const crcPoly_t crc_Poly[] = {
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* |
* |
* @crcNum = Number for reflection |
* @crcNum = Number for reflection |
* @crcBits = Number width bits |
* @crcBits = Number width bits |
* return: -1 error, !=-1 reflecting number | * return: reflecting number |
*/ |
*/ |
u_int |
u_int |
crcReflect(u_int crcNum, u_char crcBits) |
crcReflect(u_int crcNum, u_char crcBits) |
Line 95 crcReflect(u_int crcNum, u_char crcBits)
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Line 100 crcReflect(u_int crcNum, u_char crcBits)
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* @RevOpts = Options for computation (REVOPTS_REVERTBYTE, REVOPTS_REVERTCRC) |
* @RevOpts = Options for computation (REVOPTS_REVERTBYTE, REVOPTS_REVERTCRC) |
* @initCRC = Initial CRC value |
* @initCRC = Initial CRC value |
* @xorCRC = Last xor CRC value |
* @xorCRC = Last xor CRC value |
* return: -1 error, !=-1 CRC checksum | * return: CRC checksum |
*/ |
*/ |
u_int |
u_int |
crcCalc(u_char * __restrict psBuf, u_int bufLen, u_char crcBits, u_char RevOpts, u_int initCRC, u_int xorCRC) |
crcCalc(u_char * __restrict psBuf, u_int bufLen, u_char crcBits, u_char RevOpts, u_int initCRC, u_int xorCRC) |
{ |
{ |
const u_int bits = sizeof(int) * 8 - crcBits; | u_int bits = sizeof(int) * 8; |
u_int poly, crchibit, crc; |
u_int poly, crchibit, crc; |
register u_int i, j, b, ch; |
register u_int i, j, b, ch; |
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Line 109 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha
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Line 114 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha
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switch (crcBits) { |
switch (crcBits) { |
case 1: |
case 1: |
poly = crc_Poly[0].poly_num; |
poly = crc_Poly[0].poly_num; |
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bits -= crc_Poly[0].poly_bits; |
break; |
break; |
case 4: |
case 4: |
poly = crc_Poly[1].poly_num; |
poly = crc_Poly[1].poly_num; |
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bits -= crc_Poly[1].poly_bits; |
break; |
break; |
case 5: |
case 5: |
poly = crc_Poly[2].poly_num; |
poly = crc_Poly[2].poly_num; |
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bits -= crc_Poly[2].poly_bits; |
break; |
break; |
case 6: |
case 6: |
poly = crc_Poly[3].poly_num; |
poly = crc_Poly[3].poly_num; |
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bits -= crc_Poly[3].poly_bits; |
break; |
break; |
case 7: |
case 7: |
poly = crc_Poly[4].poly_num; |
poly = crc_Poly[4].poly_num; |
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bits -= crc_Poly[4].poly_bits; |
break; |
break; |
case 8: |
case 8: |
poly = crc_Poly[5].poly_num; |
poly = crc_Poly[5].poly_num; |
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bits -= crc_Poly[5].poly_bits; |
break; |
break; |
case 10: |
case 10: |
poly = crc_Poly[6].poly_num; |
poly = crc_Poly[6].poly_num; |
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bits -= crc_Poly[6].poly_bits; |
break; |
break; |
case 11: |
case 11: |
poly = crc_Poly[7].poly_num; |
poly = crc_Poly[7].poly_num; |
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bits -= crc_Poly[7].poly_bits; |
break; |
break; |
case 12: |
case 12: |
poly = crc_Poly[8].poly_num; |
poly = crc_Poly[8].poly_num; |
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bits -= crc_Poly[8].poly_bits; |
break; |
break; |
case 15: |
case 15: |
poly = crc_Poly[9].poly_num; |
poly = crc_Poly[9].poly_num; |
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bits -= crc_Poly[9].poly_bits; |
break; |
break; |
case 16: |
case 16: |
poly = crc_Poly[10].poly_num; |
poly = crc_Poly[10].poly_num; |
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bits -= crc_Poly[10].poly_bits; |
break; |
break; |
case 24: |
case 24: |
poly = crc_Poly[11].poly_num; |
poly = crc_Poly[11].poly_num; |
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bits -= crc_Poly[11].poly_bits; |
break; |
break; |
case 30: |
case 30: |
poly = crc_Poly[12].poly_num; |
poly = crc_Poly[12].poly_num; |
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bits -= crc_Poly[12].poly_bits; |
break; |
break; |
case 32: |
case 32: |
poly = crc_Poly[13].poly_num; |
poly = crc_Poly[13].poly_num; |
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bits -= crc_Poly[13].poly_bits; |
break; |
break; |
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case 161: |
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poly = crc_Poly[14].poly_num; |
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bits -= crc_Poly[14].poly_bits; |
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crcBits = crc_Poly[14].poly_bits; |
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break; |
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case 162: |
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poly = crc_Poly[15].poly_num; |
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bits -= crc_Poly[15].poly_bits; |
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crcBits = crc_Poly[15].poly_bits; |
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break; |
default: |
default: |
elwix_SetErr(EINVAL, "crcCalc(): Unsupported CRC method!!!"); |
elwix_SetErr(EINVAL, "crcCalc(): Unsupported CRC method!!!"); |
return -1; |
return -1; |
Line 187 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha
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Line 216 crcCalc(u_char * __restrict psBuf, u_int bufLen, u_cha
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/* |
/* |
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* crc16_xy() - Checksum calculation in X/Y modem communication |
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* |
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* @buf = Data for calculation |
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* @bufLen = Length of data |
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* return: Checksum |
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*/ |
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u_short |
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crc16_xy(u_char * __restrict buf, int bufLen) |
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{ |
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u_short crc, x; |
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register u_short i; |
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assert(buf); |
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for (crc = 0; bufLen > 0; bufLen--, buf++) |
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for (i = 0x80; i; i >>= 1) { |
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x = crc >> 15; |
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crc <<= 1; |
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if (*buf & i) |
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crc++; |
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if (x) |
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crc ^= crc_16poly; |
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} |
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for (i = 0; i < 16; i++) { |
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x = crc >> 15; |
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crc <<= 1; |
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if (x) |
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crc ^= crc_16poly; |
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} |
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return crc; |
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} |
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/* |
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* crc16_ccitt() - Checksum calculation |
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* |
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* @buf = Data for calculation |
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* @bufLen = Length of data |
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* return: Checksum |
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*/ |
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u_short |
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crc16_ccitt(u_char * __restrict buf, int bufLen) |
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{ |
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u_short crc; |
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register u_char i; |
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for (crc = 0; bufLen > 0; bufLen--, buf++) { |
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crc ^= (u_short) *buf << 8; |
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for (i = 0x80; i; i >>= 1) |
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if (crc & 0x8000) |
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crc = crc << 1 ^ crc_16poly; |
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else |
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crc <<= 1; |
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} |
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return crc; |
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} |
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/* |
* crcIP() - Checksum in IP communication |
* crcIP() - Checksum in IP communication |
* |
* |
* @buf = Data for calculation |
* @buf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_short |
u_short |
crcIP(u_char * __restrict buf, int bufLen) |
crcIP(u_char * __restrict buf, int bufLen) |
Line 220 crcIP(u_char * __restrict buf, int bufLen)
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Line 311 crcIP(u_char * __restrict buf, int bufLen)
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* @buf = Data for calculation |
* @buf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* @th = TCP header |
* @th = TCP header |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_short |
u_short |
crcTCP(struct in_addr src, struct in_addr dst, u_char * __restrict th) |
crcTCP(struct in_addr src, struct in_addr dst, u_char * __restrict th) |
Line 250 crcTCP(struct in_addr src, struct in_addr dst, u_char
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Line 341 crcTCP(struct in_addr src, struct in_addr dst, u_char
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* @buf = Data for calculation |
* @buf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* @uh = UDP header |
* @uh = UDP header |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_short |
u_short |
crcUDP(struct in_addr src, struct in_addr dst, u_char * __restrict uh) |
crcUDP(struct in_addr src, struct in_addr dst, u_char * __restrict uh) |
Line 280 crcUDP(struct in_addr src, struct in_addr dst, u_char
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Line 371 crcUDP(struct in_addr src, struct in_addr dst, u_char
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* |
* |
* @nBuf = Data for calculation |
* @nBuf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_short |
u_short |
crcFletcher16(u_short * __restrict nBuf, int bufLen) |
crcFletcher16(u_short * __restrict nBuf, int bufLen) |
Line 312 crcFletcher16(u_short * __restrict nBuf, int bufLen)
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Line 403 crcFletcher16(u_short * __restrict nBuf, int bufLen)
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* |
* |
* @nBuf = Data for calculation |
* @nBuf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_int |
u_int |
crcFletcher(u_short * __restrict nBuf, int bufLen) |
crcFletcher(u_short * __restrict nBuf, int bufLen) |
Line 343 crcFletcher(u_short * __restrict nBuf, int bufLen)
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Line 434 crcFletcher(u_short * __restrict nBuf, int bufLen)
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* |
* |
* @psBuf = Data for calculation |
* @psBuf = Data for calculation |
* @bufLen = Length of data |
* @bufLen = Length of data |
* return: -1 error, !=-1 Checksum | * return: Checksum |
*/ |
*/ |
u_int |
u_int |
crcAdler(u_char * __restrict psBuf, int bufLen) |
crcAdler(u_char * __restrict psBuf, int bufLen) |