From: Sasha Neftin Date: Mon, 10 Feb 2020 07:04:15 +0000 (+0200) Subject: igc: Add GSO partial support X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=34428dff3679f0c4c9b185ff8eccefd12a7f55f8;p=linux.git 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: Sasha Neftin Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 69fa1ce1f9271..46ab035c20320 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -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)