Commit 34428dff authored by Sasha Neftin's avatar Sasha Neftin Committed by Jeff Kirsher
Browse files

igc: Add GSO partial support 



Partial generic segmentation offload is a hybrid between TSO and GSO.
What is effectively does is take advantage of certain traits of TCP and
tunnels so that instead of having to rewrite the packet headers for each
segment only in the inner-most transport header and possible the outer-most
network header need to be updated.
This allows devices that do not support tunnel offload or tunnels
offloads with checksum to still make use of segmentation.

Signed-off-by: default avatarSasha Neftin <sasha.neftin@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 2fcd8014

drivers/net/ethernet/intel/igc/igc_main.c

+10 −0
Original line number Diff line number Diff line
@@ -4727,6 +4727,16 @@ static int igc_probe(struct pci_dev *pdev, 
	netdev->features |= NETIF_F_HW_CSUM;

	netdev->features |= NETIF_F_SCTP_CRC;



#define IGC_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \

				  NETIF_F_GSO_GRE_CSUM | \

				  NETIF_F_GSO_IPXIP4 | \

				  NETIF_F_GSO_IPXIP6 | \

				  NETIF_F_GSO_UDP_TUNNEL | \

				  NETIF_F_GSO_UDP_TUNNEL_CSUM)



	netdev->gso_partial_features = IGC_GSO_PARTIAL_FEATURES;

	netdev->features |= NETIF_F_GSO_PARTIAL | IGC_GSO_PARTIAL_FEATURES;



	/* setup the private structure */

	err = igc_sw_init(adapter);

	if (err)