GBP plugin

[vpp.git] / src / vppinfra / crc32.h

diff --git a/src/vppinfra/crc32.h b/src/vppinfra/crc32.h
index abb2953..340b539 100644 (file)
--- a/src/vppinfra/crc32.h
+++ b/src/vppinfra/crc32.h
@@ -16,9 +16,14 @@
 #ifndef __included_crc32_h__
 #define __included_crc32_h__
 
+#include <vppinfra/clib.h>
+
 #if __SSE4_2__
+#define clib_crc32c_uses_intrinsics
 #include <x86intrin.h>
 
+#define crc32_u64 _mm_crc32_u64
+
 static_always_inline u32
 clib_crc32c (u8 * s, int len)
 {
@@ -45,8 +50,34 @@ clib_crc32c (u8 * s, int len)
   return v;
 }
 
-#endif
+#elif __ARM_FEATURE_CRC32
+#define clib_crc32c_uses_intrinsics
+#include <arm_acle.h>
+
+
+#define crc32_u64 __crc32cd
+
+static_always_inline u32
+clib_crc32c (u8 * s, int len)
+{
+  u32 v = 0;
+
+  for (; len >= 8; len -= 8, s += 8)
+    v = __crc32cd (v, *((u64 *) s));
+
+  for (; len >= 4; len -= 4, s += 4)
+    v = __crc32cw (v, *((u32 *) s));
 
+  for (; len >= 2; len -= 2, s += 2)
+    v = __crc32ch (v, *((u16 *) s));
+
+  for (; len >= 1; len -= 1, s += 1)
+    v = __crc32cb (v, *((u8 *) s));
+
+  return v;
+}
+
+#endif
 #endif /* __included_crc32_h__ */
 
 /*