3  * cleaned up code to current version of sparse and added the slicing-by-8
4  * algorithm to the closely similar existing slicing-by-4 algorithm.
9  * subsequently included in the kernel, thus was re-licensed under the
56 /* implements slicing-by-4 or slicing-by-8 algorithm */
58 crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])  argument
88 		} while ((--len) && ((long)buf)&3);
101 	--b;
104 	for (--b; len; --len) {
118 		u8 *p = (u8 *)(b + 1) - 1;  local
121 			DO_CRC(*++p); /* use pre increment for speed */
124 			DO_CRC(*++p); /* use pre increment for speed */
125 		} while (--len);
137  * crc32_le_generic() - Calculate bitwise little-endian Ethernet AUTODIN II
141  * @p: pointer to buffer over which CRC32/CRC32C is run
142  * @len: length of buffer @p
143  * @tab: little-endian Ethernet table
146 static inline u32 __pure crc32_le_generic(u32 crc, unsigned char const *p,  argument
147 					  size_t len, const u32 (*tab)[256],  argument
152 	while (len--) {
153 		crc ^= *p++;
158 	while (len--) {
159 		crc ^= *p++;
166 	while (len--) {
167 		crc ^= *p++;
173 	while (len--) {
174 		crc ^= *p++;
179 	crc = crc32_body(crc, p, len, tab);
186 u32 __pure __weak crc32_le(u32 crc, unsigned char const *p, size_t len)  argument
188 	return crc32_le_generic(crc, p, len, NULL, CRC32_POLY_LE);
190 u32 __pure __weak __crc32c_le(u32 crc, unsigned char const *p, size_t len)  argument
192 	return crc32_le_generic(crc, p, len, NULL, CRC32C_POLY_LE);
195 u32 __pure __weak crc32_le(u32 crc, unsigned char const *p, size_t len)  argument
197 	return crc32_le_generic(crc, p, len,
198 			(const u32 (*)[256])crc32table_le, CRC32_POLY_LE);
200 u32 __pure __weak __crc32c_le(u32 crc, unsigned char const *p, size_t len)  argument
202 	return crc32_le_generic(crc, p, len,
203 			(const u32 (*)[256])crc32ctable_le, CRC32C_POLY_LE);
214  * This follows the "little-endian" CRC convention that the lsbit
232  * crc32_generic_shift - Append @len 0 bytes to crc, in logarithmic time
233  * @crc: The original little-endian CRC (i.e. lsbit is x^31 coefficient)
286  * crc32_be_generic() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
289  * @p: pointer to buffer over which CRC32 is run
290  * @len: length of buffer @p
291  * @tab: big-endian Ethernet table
294 static inline u32 __pure crc32_be_generic(u32 crc, unsigned char const *p,  argument
295 					  size_t len, const u32 (*tab)[256],  argument
300 	while (len--) {
301 		crc ^= *p++ << 24;
308 	while (len--) {
309 		crc ^= *p++ << 24;
316 	while (len--) {
317 		crc ^= *p++ << 24;
322 	while (len--) {
323 		crc ^= *p++ << 24;
328 	crc = crc32_body(crc, p, len, tab);
335 u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)  argument
337 	return crc32_be_generic(crc, p, len, NULL, CRC32_POLY_BE);
340 u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)  argument
342 	return crc32_be_generic(crc, p, len,
343 			(const u32 (*)[256])crc32table_be, CRC32_POLY_BE);