From: Ciara Power <ciara.power@intel.com>
Date: Mon, 19 Oct 2020 13:48:47 +0000 (+0200)
Subject: net/fm10k: check max SIMD bitwidth
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a99d51852052804831bf4758e4a4dcab5d2c6cba;p=dpdk.git

net/fm10k: 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: Qi Zhang <qi.z.zhang@intel.com>
---

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index dc2979bdd2..c187088a33 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -10,6 +10,7 @@
 #include <rte_dev.h>
 #include <rte_spinlock.h>
 #include <rte_kvargs.h>
+#include <rte_vect.h>
 
 #include "fm10k.h"
 #include "base/fm10k_api.h"
@@ -2939,7 +2940,8 @@ fm10k_set_tx_function(struct rte_eth_dev *dev)
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
 		/* primary process has set the ftag flag and offloads */
 		txq = dev->data->tx_queues[0];
-		if (fm10k_tx_vec_condition_check(txq)) {
+		if (fm10k_tx_vec_condition_check(txq) ||
+				rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) {
 			dev->tx_pkt_burst = fm10k_xmit_pkts;
 			dev->tx_pkt_prepare = fm10k_prep_pkts;
 			PMD_INIT_LOG(DEBUG, "Use regular Tx func");
@@ -2958,7 +2960,8 @@ fm10k_set_tx_function(struct rte_eth_dev *dev)
 		txq = dev->data->tx_queues[i];
 		txq->tx_ftag_en = tx_ftag_en;
 		/* Check if Vector Tx is satisfied */
-		if (fm10k_tx_vec_condition_check(txq))
+		if (fm10k_tx_vec_condition_check(txq) ||
+				rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)
 			use_sse = 0;
 	}
 
@@ -2992,7 +2995,8 @@ fm10k_set_rx_function(struct rte_eth_dev *dev)
 	 * conditions to be met.
 	 */
 	if (!fm10k_rx_vec_condition_check(dev) &&
-			dev_info->rx_vec_allowed && !rx_ftag_en) {
+			dev_info->rx_vec_allowed && !rx_ftag_en &&
+			rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
 		if (dev->data->scattered_rx)
 			dev->rx_pkt_burst = fm10k_recv_scattered_pkts_vec;
 		else