X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_efd%2Frte_efd.c;h=4d9a088769e48d3ceb0a5e7430bc7b401f0b97be;hb=879b01bdfa90c739337d59b9b0f89f1ed8d5f160;hp=68e6dab02d4f33e8900e95abac85a4818744ae64;hpb=86d898968826ad2b9a4ecaac8d54626d7250989b;p=dpdk.git

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index 68e6dab02d..4d9a088769 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -36,7 +36,6 @@
 #include <inttypes.h>
 #include <errno.h>
 #include <stdarg.h>
-#include <math.h>
 #include <sys/queue.h>
 
 #include <rte_log.h>
@@ -54,6 +53,8 @@
 #include "rte_efd.h"
 #if defined(RTE_ARCH_X86)
 #include "rte_efd_x86.h"
+#elif defined(RTE_ARCH_ARM64)
+#include "rte_efd_arm64.h"
 #endif
 
 #define EFD_KEY(key_idx, table) (table->keys + ((key_idx) * table->key_len))
@@ -104,6 +105,7 @@ allocated memory
 enum efd_lookup_internal_function {
 	EFD_LOOKUP_SCALAR = 0,
 	EFD_LOOKUP_AVX2,
+	EFD_LOOKUP_NEON,
 	EFD_LOOKUP_NUM
 };
 
@@ -557,7 +559,7 @@ rte_efd_create(const char *name, uint32_t max_num_rules, uint32_t key_len,
 		num_chunks = rte_align32pow2((max_num_rules /
 			EFD_TARGET_CHUNK_NUM_RULES) + 1);
 
-	num_chunks_shift = log2(num_chunks);
+	num_chunks_shift = rte_bsf32(num_chunks);
 
 	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
 
@@ -674,6 +676,16 @@ rte_efd_create(const char *name, uint32_t max_num_rules, uint32_t key_len,
 	if (RTE_EFD_VALUE_NUM_BITS > 3 && rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 		table->lookup_fn = EFD_LOOKUP_AVX2;
 	else
+#endif
+#if defined(RTE_ARCH_ARM64)
+	/*
+	 * For less than or equal to 16 bits, scalar function performs better
+	 * than vectorised version
+	 */
+	if (RTE_EFD_VALUE_NUM_BITS > 16 &&
+	    rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON))
+		table->lookup_fn = EFD_LOOKUP_NEON;
+	else
 #endif
 		table->lookup_fn = EFD_LOOKUP_SCALAR;
 
@@ -1272,6 +1284,15 @@ efd_lookup_internal(const struct efd_online_group_entry * const group,
 					group->lookup_table,
 					hash_val_a,
 					hash_val_b);
+		break;
+#endif
+#if defined(RTE_ARCH_ARM64)
+	case EFD_LOOKUP_NEON:
+		return efd_lookup_internal_neon(group->hash_idx,
+					group->lookup_table,
+					hash_val_a,
+					hash_val_b);
+		break;
 #endif
 	case EFD_LOOKUP_SCALAR:
 	/* Fall-through */