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From: Ciara Power <ciara.power@intel.com>
To: dev@dpdk.org
Cc: viktorin@rehivetech.com, ruifeng.wang@arm.com, jerinj@marvell.com,
drc@linux.vnet.ibm.com, bruce.richardson@intel.com,
konstantin.ananyev@intel.com, david.marchand@redhat.com,
Ciara Power <ciara.power@intel.com>,
Ajit Khaparde <ajit.khaparde@broadcom.com>,
Somnath Kotur <somnath.kotur@broadcom.com>
Date: Thu, 15 Oct 2020 16:22:46 +0100
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Subject: [dpdk-dev] [PATCH v7 05/18] net/bnxt: add checks for max SIMD
bitwidth
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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: Ajit Khaparde <ajit.khaparde@broadcom.com>
Cc: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Ciara Power <ciara.power@intel.com>
---
v4: Updated enum name.
---
drivers/net/bnxt/bnxt_ethdev.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 8b63134c39..07d1a1a6ab 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1169,7 +1169,8 @@ bnxt_receive_function(struct rte_eth_dev *eth_dev)
DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
DEV_RX_OFFLOAD_RSS_HASH |
DEV_RX_OFFLOAD_VLAN_FILTER)) &&
- !BNXT_TRUFLOW_EN(bp) && BNXT_NUM_ASYNC_CPR(bp)) {
+ !BNXT_TRUFLOW_EN(bp) && BNXT_NUM_ASYNC_CPR(bp) &&
+ rte_get_max_simd_bitwidth() >= RTE_SIMD_128) {
PMD_DRV_LOG(INFO, "Using vector mode receive for port %d\n",
eth_dev->data->port_id);
bp->flags |= BNXT_FLAG_RX_VECTOR_PKT_MODE;
@@ -1202,7 +1203,8 @@ bnxt_transmit_function(__rte_unused struct rte_eth_dev *eth_dev)
*/
if (!eth_dev->data->scattered_rx &&
!(offloads & ~DEV_TX_OFFLOAD_MBUF_FAST_FREE) &&
- !BNXT_TRUFLOW_EN(bp)) {
+ !BNXT_TRUFLOW_EN(bp) &&
+ rte_get_max_simd_bitwidth() >= RTE_SIMD_128) {
PMD_DRV_LOG(INFO, "Using vector mode transmit for port %d\n",
eth_dev->data->port_id);
return bnxt_xmit_pkts_vec;
--
2.22.0