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-rw-r--r--src/vnet/map/map.c42
1 files changed, 16 insertions, 26 deletions
diff --git a/src/vnet/map/map.c b/src/vnet/map/map.c
index 8579cdf6a7b..d246f6c8254 100644
--- a/src/vnet/map/map.c
+++ b/src/vnet/map/map.c
@@ -19,29 +19,10 @@
#include <vnet/fib/ip6_fib.h>
#include <vnet/adj/adj.h>
#include <vnet/map/map_dpo.h>
+#include <vppinfra/crc32.h>
#include "map.h"
-#ifdef __SSE4_2__
-static inline u32
-crc_u32 (u32 data, u32 value)
-{
- __asm__ volatile ("crc32l %[data], %[value];":[value] "+r" (value):[data]
- "rm" (data));
- return value;
-}
-#else
-#include <vppinfra/xxhash.h>
-
-static inline u32
-crc_u32 (u32 data, u32 value)
-{
- u64 tmp = ((u64) data << 32) | (u64) value;
- return (u32) clib_xxhash (tmp);
-}
-#endif
-
-
/*
* This code supports the following MAP modes:
*
@@ -1488,10 +1469,12 @@ map_ip4_reass_get (u32 src, u32 dst, u16 fragment_id,
};
u32 h = 0;
- h = crc_u32 (k.as_u32[0], h);
- h = crc_u32 (k.as_u32[1], h);
- h = crc_u32 (k.as_u32[2], h);
- h = crc_u32 (k.as_u32[3], h);
+#ifdef clib_crc32c_uses_intrinsics
+ h = clib_crc32c ((u8 *) k.as_u32, 16);
+#else
+ u64 tmp = k.as_u32[0] ^ k.as_u32[1] ^ k.as_u32[2] ^ k.as_u32[3];
+ h = clib_xxhash (tmp);
+#endif
h = h >> (32 - mm->ip4_reass_ht_log2len);
f64 now = vlib_time_now (mm->vlib_main);
@@ -1660,8 +1643,15 @@ map_ip6_reass_get (ip6_address_t * src, ip6_address_t * dst, u32 fragment_id,
u32 h = 0;
int i;
- for (i = 0; i < 10; i++)
- h = crc_u32 (k.as_u32[i], h);
+
+#ifdef clib_crc32c_uses_intrinsics
+ h = clib_crc32c ((u8 *) k.as_u32, 40);
+#else
+ u64 tmp =
+ k.as_u64[0] ^ k.as_u64[1] ^ k.as_u64[2] ^ k.as_u64[3] ^ k.as_u64[4];
+ h = clib_xxhash (tmp);
+#endif
+
h = h >> (32 - mm->ip6_reass_ht_log2len);
f64 now = vlib_time_now (mm->vlib_main);