net/enic: check max SIMD bitwidth

When choosing a vector path to take, an extra condition must be
satisfied to ensure the max SIMD bitwidth allows for the CPU enabled
path.

Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>

diff --git a/drivers/net/enic/enic_rxtx_vec_avx2.c b/drivers/net/enic/enic_rxtx_vec_avx2.c
index 676b9f5..d39021f 100644 (file)
--- a/drivers/net/enic/enic_rxtx_vec_avx2.c
+++ b/drivers/net/enic/enic_rxtx_vec_avx2.c
@@ -5,6 +5,7 @@
 
 #include <rte_mbuf.h>
 #include <rte_ethdev_driver.h>
+#include <rte_vect.h>
 
 #include "enic_compat.h"
 #include "rq_enet_desc.h"
@@ -821,7 +822,8 @@ enic_use_vector_rx_handler(struct rte_eth_dev *eth_dev)
        fconf = &eth_dev->data->dev_conf.fdir_conf;
        if (fconf->mode != RTE_FDIR_MODE_NONE)
                return false;
-       if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) {
+       if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) &&
+                       rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_256) {
                ENICPMD_LOG(DEBUG, " use the non-scatter avx2 Rx handler");
                eth_dev->rx_pkt_burst = &enic_noscatter_vec_recv_pkts;
                enic->use_noscatter_vec_rx_handler = 1;