423 	size_t (*encap_hlen)(struct ip_tunnel_encap *e);
424 	int (*build_header)(struct sk_buff *skb, struct ip_tunnel_encap *e,
496 static inline int ip_encap_hlen(struct ip_tunnel_encap *e)  in ip_encap_hlen()  argument
501 	if (e->type == TUNNEL_ENCAP_NONE)  in ip_encap_hlen()
504 	if (e->type >= MAX_IPTUN_ENCAP_OPS)  in ip_encap_hlen()
508 	ops = rcu_dereference(iptun_encaps[e->type]);  in ip_encap_hlen()
510 		hlen = ops->encap_hlen(e);  in ip_encap_hlen()
517 				  struct ip_tunnel_encap *e,  in ip_tunnel_encap()  argument
523 	if (e->type == TUNNEL_ENCAP_NONE)  in ip_tunnel_encap()
526 	if (e->type >= MAX_IPTUN_ENCAP_OPS)  in ip_tunnel_encap()
530 	ops = rcu_dereference(iptun_encaps[e->type]);  in ip_tunnel_encap()
532 		ret = ops->build_header(skb, e, protocol, fl4);  in ip_tunnel_encap()