[dpdk-dev] [PATCH v4 09/17] net/ice: add checks for max SIMD bitwidth
Ciara Power
ciara.power at intel.com
Tue Oct 13 12:38:09 CEST 2020
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: Qiming Yang <qiming.yang at intel.com>
Cc: Qi Zhang <qi.z.zhang at intel.com>
Signed-off-by: Ciara Power <ciara.power at intel.com>
---
v4: Updated enum name.
---
drivers/net/ice/ice_rxtx.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index 93a0ac6918..0003ce2afe 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -2989,7 +2989,9 @@ ice_set_rx_function(struct rte_eth_dev *dev)
bool use_avx2 = false;
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- if (!ice_rx_vec_dev_check(dev) && ad->rx_bulk_alloc_allowed) {
+ if (!ice_rx_vec_dev_check(dev) && ad->rx_bulk_alloc_allowed &&
+ rte_get_max_simd_bitwidth()
+ >= RTE_SIMD_128) {
ad->rx_vec_allowed = true;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
rxq = dev->data->rx_queues[i];
@@ -2999,8 +3001,10 @@ ice_set_rx_function(struct rte_eth_dev *dev)
}
}
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 ||
- rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1)
+ if ((rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 ||
+ rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) &&
+ rte_get_max_simd_bitwidth()
+ >= RTE_SIMD_256)
use_avx2 = true;
} else {
@@ -3167,7 +3171,9 @@ ice_set_tx_function(struct rte_eth_dev *dev)
bool use_avx2 = false;
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- if (!ice_tx_vec_dev_check(dev)) {
+ if (!ice_tx_vec_dev_check(dev) &&
+ rte_get_max_simd_bitwidth()
+ >= RTE_SIMD_128) {
ad->tx_vec_allowed = true;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
txq = dev->data->tx_queues[i];
@@ -3177,8 +3183,10 @@ ice_set_tx_function(struct rte_eth_dev *dev)
}
}
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 ||
- rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1)
+ if ((rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 ||
+ rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) &&
+ rte_get_max_simd_bitwidth()
+ >= RTE_SIMD_256)
use_avx2 = true;
} else {
--
2.22.0
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