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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-10-12 14:08:35 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-10-12 14:08:35 +0300
commit4a12f38e23d10a5dbad6cce0abaadd10e5a1aa68 (patch)
tree533208f5479c17b9a7c162a425a967c7a7edf46b /include/linux/crc32poly.h
parent0d2f2f4f27694a2214701e7482ab7599ce4e5e77 (diff)
parent449d48b1b99fdaa076166e200132705ac2bee711 (diff)
downloadlinux-rolling-stable.tar.xz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/crc32poly.h')
-rw-r--r--include/linux/crc32poly.h16
1 files changed, 5 insertions, 11 deletions
diff --git a/include/linux/crc32poly.h b/include/linux/crc32poly.h
index 62c4b7790a28..ccab711295fa 100644
--- a/include/linux/crc32poly.h
+++ b/include/linux/crc32poly.h
@@ -2,19 +2,13 @@
#ifndef _LINUX_CRC32_POLY_H
#define _LINUX_CRC32_POLY_H
-/*
- * There are multiple 16-bit CRC polynomials in common use, but this is
- * *the* standard CRC-32 polynomial, first popularized by Ethernet.
- * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0
- */
+/* The polynomial used by crc32_le(), in integer form. See crc32_le(). */
#define CRC32_POLY_LE 0xedb88320
+
+/* The polynomial used by crc32_be(), in integer form. See crc32_be(). */
#define CRC32_POLY_BE 0x04c11db7
-/*
- * This is the CRC32c polynomial, as outlined by Castagnoli.
- * x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^19+x^18+x^14+x^13+x^11+x^10+x^9+
- * x^8+x^6+x^0
- */
-#define CRC32C_POLY_LE 0x82F63B78
+/* The polynomial used by crc32c(), in integer form. See crc32c(). */
+#define CRC32C_POLY_LE 0x82f63b78
#endif /* _LINUX_CRC32_POLY_H */