net/ixgbe: 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: Konstantin Ananyev <konstantin.ananyev@intel.com>
Reviewed-by: Haiyue Wang <haiyue.wang@intel.com>

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 29d385c..ce589b9 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -42,6 +42,7 @@
 #include <rte_errno.h>
 #include <rte_ip.h>
 #include <rte_net.h>
+#include <rte_vect.h>
 
 #include "ixgbe_logs.h"
 #include "base/ixgbe_api.h"
@@ -2405,6 +2406,7 @@ ixgbe_dev_tx_done_cleanup(void *tx_queue, uint32_t free_cnt)
 #endif
                        txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST) {
                if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
+                               rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128 &&
                                (rte_eal_process_type() != RTE_PROC_PRIMARY ||
                                        txq->sw_ring_v != NULL)) {
                        return ixgbe_tx_done_cleanup_vec(txq, free_cnt);
@@ -2503,6 +2505,7 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq)
                PMD_INIT_LOG(DEBUG, "Using simple tx code path");
                dev->tx_pkt_prepare = NULL;
                if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
+                               rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128 &&
                                (rte_eal_process_type() != RTE_PROC_PRIMARY ||
                                        ixgbe_txq_vec_setup(txq) == 0)) {
                        PMD_INIT_LOG(DEBUG, "Vector tx enabled.");
@@ -4744,7 +4747,8 @@ ixgbe_set_rx_function(struct rte_eth_dev *dev)
         * conditions to be met and Rx Bulk Allocation should be allowed.
         */
        if (ixgbe_rx_vec_dev_conf_condition_check(dev) ||
-           !adapter->rx_bulk_alloc_allowed) {
+           !adapter->rx_bulk_alloc_allowed ||
+                       rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) {
                PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet Vector Rx "
                                    "preconditions",
                             dev->data->port_id);