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From: Rafal Kozik <rk@semihalf.com>
To: dev@dpdk.org
Cc: mw@semihalf.com, mk@semihalf.com, gtzalik@amazon.com, evgenys@amazon.com,
matua@amazon.com, igorch@amazon.com, ferruh.yigit@intel.com,
Rafal Kozik <rk@semihalf.com>
Date: Wed, 11 Apr 2018 16:07:17 +0200
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Subject: [dpdk-dev] [PATCH 4/4] net/ena: enable WC
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Write combining (wc) increase NIC performenca by making better
utilization of PCI bus. ENA support this feature.
To enable it load igb driver with wc_activate set to 1.
Signed-off-by: Rafal Kozik <rk@semihalf.com>
---
drivers/net/ena/ena_ethdev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 34b2a8d..415d89d 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -1889,7 +1889,8 @@ static int eth_ena_pci_remove(struct rte_pci_device *pci_dev)
static struct rte_pci_driver rte_ena_pmd = {
.id_table = pci_id_ena_map,
- .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING |
+ RTE_PCI_DRV_WC_ACTIVATE,
.probe = eth_ena_pci_probe,
.remove = eth_ena_pci_remove,
};
--
2.7.4