ndo_gso_check() was recently introduced to allow NICs to report the offloading support that they have on a per-skb basis. Add an implementation for this driver which checks for something that looks like VXLAN.
Implementation shamelessly stolen from Tom Herbert: http://thread.gmane.org/gmane.linux.network/332428/focus=333111 Signed-off-by: Joe Stringer <joestrin...@nicira.com> --- Should this driver report support for GSO on packets with tunnel headers up to 64B like the i40e driver does? --- drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c index 8811364..b9ef622 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c @@ -1350,6 +1350,17 @@ static void fm10k_dfwd_del_station(struct net_device *dev, void *priv) } } +static bool fm10k_gso_check(struct sk_buff *skb, struct net_device *dev) +{ + if ((skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) && + (skb->inner_protocol_type != ENCAP_TYPE_ETHER || + skb->inner_protocol != htons(ETH_P_TEB) || + skb_inner_mac_header(skb) - skb_transport_header(skb) != 16)) + return false; + + return true; +} + static const struct net_device_ops fm10k_netdev_ops = { .ndo_open = fm10k_open, .ndo_stop = fm10k_close, @@ -1372,6 +1383,7 @@ static const struct net_device_ops fm10k_netdev_ops = { .ndo_do_ioctl = fm10k_ioctl, .ndo_dfwd_add_station = fm10k_dfwd_add_station, .ndo_dfwd_del_station = fm10k_dfwd_del_station, + .ndo_gso_check = fm10k_gso_check, }; #define DEFAULT_DEBUG_LEVEL_SHIFT 3 -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
