[dpdk-dev] [PATCH 1/7] net/hns3: check max SIMD bitwidth
Min Hu (Connor)
humin29 at huawei.com
Sat Apr 17 11:54:53 CEST 2021
From: Chengwen Feng <fengchengwen at huawei.com>
This patch supports check max SIMD bitwidth when choosing NEON and SVE
vector path.
Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
---
drivers/net/hns3/hns3_rxtx.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 9bb30fc..f2022a5 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -13,6 +13,7 @@
#include <rte_malloc.h>
#if defined(RTE_ARCH_ARM64)
#include <rte_cpuflags.h>
+#include <rte_vect.h>
#endif
#include "hns3_ethdev.h"
@@ -2800,6 +2801,8 @@ static bool
hns3_get_default_vec_support(void)
{
#if defined(RTE_ARCH_ARM64)
+ if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)
+ return false;
if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON))
return true;
#endif
@@ -2810,6 +2813,8 @@ static bool
hns3_get_sve_support(void)
{
#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_SVE)
+ if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_256)
+ return false;
if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SVE))
return true;
#endif
--
2.7.4
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