__u8 *src_dst_addr = data + off + offsetof(struct iphdr, saddr);
__u8 *src_dst_port = data + off + sizeof(struct iphdr);
struct ipv4_l3_l4_tuple v4_tuple = {
__u8 *src_dst_addr = data + off + offsetof(struct iphdr, saddr);
__u8 *src_dst_port = data + off + sizeof(struct iphdr);
struct ipv4_l3_l4_tuple v4_tuple = {