[dpdk-dev] [PATCH v9 07/18] net/fm10k: add checks for max SIMD bitwidth

[Ciara Power <ciara.power@intel.com>]

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.

Cc: Qi Zhang <qi.z.zhang@intel.com>
Cc: Xiao Wang <xiao.w.wang@intel.com>

Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

---
v4: Updated enum name.
---
 drivers/net/fm10k/fm10k_ethdev.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index c4a6fdf7f0..78c81bf35b 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2937,7 +2937,9 @@ 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_get_max_simd_bitwidth()
+				< RTE_SIMD_128) {
 			dev->tx_pkt_burst = fm10k_xmit_pkts;
 			dev->tx_pkt_prepare = fm10k_prep_pkts;
 			PMD_INIT_LOG(DEBUG, "Use regular Tx func");
@@ -2956,7 +2958,8 @@ 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_get_max_simd_bitwidth() < RTE_SIMD_128)
 			use_sse = 0;
 	}
 
@@ -2990,7 +2993,9 @@ 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_get_max_simd_bitwidth()
+				>= RTE_SIMD_128) {
 		if (dev->data->scattered_rx)
 			dev->rx_pkt_burst = fm10k_recv_scattered_pkts_vec;
 		else
-- 
2.22.0