udp_csum 96 include/net/udp_tunnel.h bool udp_csum) udp_csum 98 include/net/udp_tunnel.h int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL; udp_csum 100 include/net/udp_tunnel.h return iptunnel_handle_offloads(skb, udp_csum, type);