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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/include/linux/crc32.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/include/linux/crc32.h')
-rw-r--r--roms/u-boot/include/linux/crc32.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/roms/u-boot/include/linux/crc32.h b/roms/u-boot/include/linux/crc32.h
new file mode 100644
index 000000000..ac4aed1c7
--- /dev/null
+++ b/roms/u-boot/include/linux/crc32.h
@@ -0,0 +1,27 @@
+/*
+ * 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 */