GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+/*
+ * crc32.h
+ * See linux/lib/crc32.c for license and changes
+ */
+#ifndef _LINUX_CRC32_H
+#define _LINUX_CRC32_H
+
+#include <linux/types.h>
+/* #include <linux/bitrev.h> */
+
+extern u32  crc32_le(u32 crc, unsigned char const *p, size_t len);
+/* extern u32  crc32_be(u32 crc, unsigned char const *p, size_t len); */
+
+#define crc32(seed, data, length)  crc32_le(seed, (unsigned char const *)data, length)
+
+/*
+ * Helpers for hash table generation of ethernet nics:
+ *
+ * Ethernet sends the least significant bit of a byte first, thus crc32_le
+ * is used. The output of crc32_le is bit reversed [most significant bit
+ * is in bit nr 0], thus it must be reversed before use. Except for
+ * nics that bit swap the result internally...
+ */
+/* #define ether_crc(length, data)    bitrev32(crc32_le(~0, data, length)) */
+/* #define ether_crc_le(length, data) crc32_le(~0, data, length) */
+
+#endif /* _LINUX_CRC32_H */