From: Rafal Kozik <rk@semihalf.com>
Date: Fri, 29 Jun 2018 13:54:08 +0000 (+0200)
Subject: net/ena: enable write combining
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=05e0eee0001cb19671eb7e8d3dd68680a695fea2;p=dpdk.git

net/ena: enable write combining

Write combining (WC) increases NIC performance by making better
utilization of PCI bus. ENA PMD may make usage of this feature.

To enable it load igb_uio driver with wc_activate set to 1.

Signed-off-by: Rafal Kozik <rk@semihalf.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 9ae73e3316..1870edf032 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -2210,7 +2210,8 @@ 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 | RTE_PCI_DRV_INTR_LSC,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
+		     RTE_PCI_DRV_WC_ACTIVATE,
 	.probe = eth_ena_pci_probe,
 	.remove = eth_ena_pci_remove,
 };