Widen _KERNEL ifdef to hide more kernel network stack structures from userland.

sys/netinet/in_var.h

@@ -173,7 +173,6 @@ do {									\
 		ifa_ref(&(ia)->ia_ifa);					\
 	IN_IFADDR_RUNLOCK();						\
 } while (0)
-#endif
 
 /*
  * IP datagram reassembly.
@@ -343,8 +342,6 @@ ims_get_mode(const struct in_multi *inm, const struct ip_msource *ims,
 	return (MCAST_UNDEFINED);
 }
 
-#ifdef _KERNEL
-
 #ifdef SYSCTL_DECL
 SYSCTL_DECL(_net_inet);
 SYSCTL_DECL(_net_inet_ip);
@@ -425,12 +422,6 @@ void	 in_rtredirect(struct sockaddr *, struct sockaddr *,
 	    struct sockaddr *, int, struct sockaddr *, u_int);
 int	 in_rtrequest(int, struct sockaddr *,
 	    struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int);
-
-#if 0
-int	 in_rt_getifa(struct rt_addrinfo *, u_int fibnum);
-int	 in_rtioctl(u_long, caddr_t, u_int);
-int	 in_rtrequest1(int, struct rt_addrinfo *, struct rtentry **, u_int);
-#endif
 #endif /* _KERNEL */
 
 /* INET6 stuff */

sys/netinet6/in6_var.h

@@ -596,7 +596,6 @@ ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b)
 	return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr)));
 }
 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp);
-#endif /* _KERNEL */
 
 /*
  * IPv6 multicast PCB-layer group filter descriptor.
@@ -696,8 +695,6 @@ im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims,
 	return (MCAST_UNDEFINED);
 }
 
-#ifdef _KERNEL
-
 /*
  * Lock macros for IPv6 layer multicast address lists.  IPv6 lock goes
  * before link layer multicast locks in the lock order.  In most cases,

sys/sys/mbuf.h

@@ -1190,8 +1190,6 @@ rt_m_getfib(struct mbuf *m)
 	((_m)->m_pkthdr.fibnum) = (_fib);				\
 } while (0)
 
-#endif /* _KERNEL */
-
 #ifdef MBUF_PROFILING
  void m_profile(struct mbuf *m);
  #define M_PROFILE(m) m_profile(m)
@@ -1296,4 +1294,5 @@ mbufq_prepend(struct mbufq *mq, struct mbuf *m)
 	STAILQ_INSERT_HEAD(&mq->mq_head, m, m_stailqpkt);
 	mq->mq_len++;
 }
+#endif /* _KERNEL */
 #endif /* !_SYS_MBUF_H_ */