From: Sasha Neftin <sasha.neftin@intel.com>
Date: Wed, 13 Nov 2019 09:27:29 +0000 (+0200)
Subject: igc: Add 64 bit DMA access support
X-Git-Tag: v5.6-rc1~151^2~182^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4439dc427d83c67aaa8447091c479c482ff85af9;p=thirdparty%2Fkernel%2Flinux.git

igc: Add 64 bit DMA access support

On relevant platforms ndo_start_xmit can handle socket buffer
fragments in high memory

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index d3a45d3cbcd92..b85009837cdff 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -4445,6 +4445,9 @@ static int igc_probe(struct pci_dev *pdev,
 	netdev->hw_features |= NETIF_F_NTUPLE;
 	netdev->hw_features |= netdev->features;
 
+	if (pci_using_dac)
+		netdev->features |= NETIF_F_HIGHDMA;
+
 	/* MTU range: 68 - 9216 */
 	netdev->min_mtu = ETH_MIN_MTU;
 	netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE;