NETIF_F_GSO_UDP_L4_BIT 57 include/linux/netdev_features.h NETIF_F_GSO_UDP_L4_BIT, NETIF_F_GSO_UDP_L4_BIT 94 net/core/ethtool.c [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",