 @@ -1,1235 +1,1235 @@
-/*	$NetBSD: rtsock.c,v 1.150 2014/07/06 03:33:33 rtr Exp $	*/
+/*	$NetBSD: rtsock.c,v 1.151 2014/07/07 10:18:20 rtr Exp $	*/
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the project nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 /*
  * Copyright (c) 1988, 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
  *	@(#)rtsock.c	8.7 (Berkeley) 10/12/95
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rtsock.c,v 1.150 2014/07/06 03:33:33 rtr Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rtsock.c,v 1.151 2014/07/07 10:18:20 rtr Exp $");
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
 #include "opt_mpls.h"
 #include "opt_compat_netbsd.h"
 #endif
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/proc.h>
 #include <sys/socket.h>
 #include <sys/socketvar.h>
 #include <sys/domain.h>
 #include <sys/protosw.h>
 #include <sys/sysctl.h>
 #include <sys/kauth.h>
 #include <sys/kmem.h>
 #include <sys/intr.h>
 #ifdef RTSOCK_DEBUG
 #include <netinet/in.h>
 #endif /* RTSOCK_DEBUG */
 #include <net/if.h>
 #include <net/route.h>
 #include <net/raw_cb.h>
 #include <netmpls/mpls.h>
 #if defined(COMPAT_14) || defined(COMPAT_50)
 #include <compat/net/if.h>
 #include <compat/net/route.h>
 #endif
 #ifdef COMPAT_RTSOCK
 #define	RTM_XVERSION	RTM_OVERSION
 #define	RT_XADVANCE(a,b) RT_OADVANCE(a,b)
 #define	RT_XROUNDUP(n)	RT_OROUNDUP(n)
 #define	PF_XROUTE	PF_OROUTE
 #define	rt_xmsghdr	rt_msghdr50
 #define	if_xmsghdr	if_msghdr	/* if_msghdr50 is for RTM_OIFINFO */
 #define	ifa_xmsghdr	ifa_msghdr50
 #define	if_xannouncemsghdr	if_announcemsghdr50
 #define	COMPATNAME(x)	compat_50_ ## x
 #define	DOMAINNAME	"oroute"
 CTASSERT(sizeof(struct ifa_xmsghdr) == 20);
 DOMAIN_DEFINE(compat_50_routedomain); /* forward declare and add to link set */
 #else
 #define	RTM_XVERSION	RTM_VERSION
 #define	RT_XADVANCE(a,b) RT_ADVANCE(a,b)
 #define	RT_XROUNDUP(n)	RT_ROUNDUP(n)
 #define	PF_XROUTE	PF_ROUTE
 #define	rt_xmsghdr	rt_msghdr
 #define	if_xmsghdr	if_msghdr
 #define	ifa_xmsghdr	ifa_msghdr
 #define	if_xannouncemsghdr	if_announcemsghdr
 #define	COMPATNAME(x)	x
 #define	DOMAINNAME	"route"
 CTASSERT(sizeof(struct ifa_xmsghdr) == 24);
 #ifdef COMPAT_50
 #define	COMPATCALL(name, args)	compat_50_ ## name args
 #endif
 DOMAIN_DEFINE(routedomain); /* forward declare and add to link set */
 #undef COMPAT_50
 #undef COMPAT_14
 #endif
 #ifndef COMPATCALL
 #define	COMPATCALL(name, args)	do { } while (/*CONSTCOND*/ 0)
 #endif
 struct route_info COMPATNAME(route_info) = {
 	.ri_dst = { .sa_len = 2, .sa_family = PF_XROUTE, },
 	.ri_src = { .sa_len = 2, .sa_family = PF_XROUTE, },
 	.ri_maxqlen = IFQ_MAXLEN,
 };
 #define	PRESERVED_RTF	(RTF_UP | RTF_GATEWAY | RTF_HOST | RTF_DONE | RTF_MASK)
 static void COMPATNAME(route_init)(void);
 static int COMPATNAME(route_output)(struct mbuf *, ...);
 static int rt_msg2(int, struct rt_addrinfo *, void *, struct rt_walkarg *, int *);
 static int rt_xaddrs(u_char, const char *, const char *, struct rt_addrinfo *);
 static struct mbuf *rt_makeifannouncemsg(struct ifnet *, int, int,
     struct rt_addrinfo *);
 static void rt_setmetrics(int, const struct rt_xmsghdr *, struct rtentry *);
 static void rtm_setmetrics(const struct rtentry *, struct rt_xmsghdr *);
 static void sysctl_net_route_setup(struct sysctllog **);
 static int sysctl_dumpentry(struct rtentry *, void *);
 static int sysctl_iflist(int, struct rt_walkarg *, int);
 static int sysctl_rtable(SYSCTLFN_PROTO);
 static void rt_adjustcount(int, int);
 static void
 rt_adjustcount(int af, int cnt)
+{
 	struct route_cb * const cb = &COMPATNAME(route_info).ri_cb;
 	cb->any_count += cnt;
 	switch (af) {
 	case AF_INET:
 		cb->ip_count += cnt;
 		return;
 #ifdef INET6
 	case AF_INET6:
 		cb->ip6_count += cnt;
 		return;
 #endif
 	case AF_MPLS:
 		cb->mpls_count += cnt;
 		return;
+	}
+}
 static int
 COMPATNAME(route_attach)(struct socket *so, int proto)
+{
 	struct rawcb *rp;
 	int s, error;
 	KASSERT(sotorawcb(so) == NULL);
 	rp = kmem_zalloc(sizeof(*rp), KM_SLEEP);
 	rp->rcb_len = sizeof(*rp);
 	so->so_pcb = rp;
 	s = splsoftnet();
 	if ((error = raw_attach(so, proto)) == 0) {
 		rt_adjustcount(rp->rcb_proto.sp_protocol, 1);
 		rp->rcb_laddr = &COMPATNAME(route_info).ri_src;
 		rp->rcb_faddr = &COMPATNAME(route_info).ri_dst;
+	}
 	splx(s);
 	if (error) {
 		kmem_free(rp, sizeof(*rp));
 		so->so_pcb = NULL;
 		return error;
+	}
 	soisconnected(so);
 	so->so_options |= SO_USELOOPBACK;
 	KASSERT(solocked(so));
 	return error;
+}
 static void
 COMPATNAME(route_detach)(struct socket *so)
+{
 	struct rawcb *rp = sotorawcb(so);
 	int s;
 	KASSERT(rp != NULL);
 	KASSERT(solocked(so));
 	s = splsoftnet();
 	rt_adjustcount(rp->rcb_proto.sp_protocol, -1);
 	raw_detach(so);
 	splx(s);
+}
 static int
 COMPATNAME(route_ioctl)(struct socket *so, u_long cmd, void *nam,
     struct ifnet * ifp)
+{
 	return EOPNOTSUPP;
+}
 static int
 COMPATNAME(route_stat)(struct socket *so, struct stat *ub)
+{
-	return 0;
+	return EOPNOTSUPP;
+}
 static int
 COMPATNAME(route_usrreq)(struct socket *so, int req, struct mbuf *m,
     struct mbuf *nam, struct mbuf *control, struct lwp *l)
+{
 	int s, error = 0;
 	KASSERT(req != PRU_ATTACH);
 	KASSERT(req != PRU_DETACH);
 	KASSERT(req != PRU_CONTROL);
 	KASSERT(req != PRU_SENSE);
 	s = splsoftnet();
 	error = raw_usrreq(so, req, m, nam, control, l);
 	splx(s);
 	return error;
+}
 /*ARGSUSED*/
 int
 COMPATNAME(route_output)(struct mbuf *m, ...)
+{
 	struct sockproto proto = { .sp_family = PF_XROUTE, };
 	struct rt_xmsghdr *rtm = NULL;
 	struct rt_xmsghdr *old_rtm = NULL;
 	struct rtentry *rt = NULL;
 	struct rtentry *saved_nrt = NULL;
 	struct rt_addrinfo info;
 	int len, error = 0;
 	struct ifnet *ifp = NULL;
 	struct ifaddr *ifa = NULL;
 	struct socket *so;
 	va_list ap;
 	sa_family_t family;
 	va_start(ap, m);
 	so = va_arg(ap, struct socket *);
 	va_end(ap);
 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0)
 	if (m == NULL || ((m->m_len < sizeof(int32_t)) &&
 	   (m = m_pullup(m, sizeof(int32_t))) == NULL))
 		return ENOBUFS;
 	if ((m->m_flags & M_PKTHDR) == 0)
 		panic("%s", __func__);
 	len = m->m_pkthdr.len;
 	if (len < sizeof(*rtm) ||
 	    len != mtod(m, struct rt_xmsghdr *)->rtm_msglen) {
 		info.rti_info[RTAX_DST] = NULL;
 		senderr(EINVAL);
+	}
 	R_Malloc(rtm, struct rt_xmsghdr *, len);
 	if (rtm == NULL) {
 		info.rti_info[RTAX_DST] = NULL;
 		senderr(ENOBUFS);
+	}
 	m_copydata(m, 0, len, rtm);
 	if (rtm->rtm_version != RTM_XVERSION) {
 		info.rti_info[RTAX_DST] = NULL;
 		senderr(EPROTONOSUPPORT);
+	}
 	rtm->rtm_pid = curproc->p_pid;
 	memset(&info, 0, sizeof(info));
 	info.rti_addrs = rtm->rtm_addrs;
 	if (rt_xaddrs(rtm->rtm_type, (const char *)(rtm + 1), len + (char *)rtm,
 	    &info)) {
 		senderr(EINVAL);
+	}
 	info.rti_flags = rtm->rtm_flags;
 #ifdef RTSOCK_DEBUG
 	if (info.rti_info[RTAX_DST]->sa_family == AF_INET) {
 		printf("%s: extracted info.rti_info[RTAX_DST] %s\n", __func__,
 		    inet_ntoa(((const struct sockaddr_in *)
 		    info.rti_info[RTAX_DST])->sin_addr));
+	}
 #endif /* RTSOCK_DEBUG */
 	if (info.rti_info[RTAX_DST] == NULL ||
 	    (info.rti_info[RTAX_DST]->sa_family >= AF_MAX)) {
 		senderr(EINVAL);
+	}
 	if (info.rti_info[RTAX_GATEWAY] != NULL &&
 	    (info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) {
 		senderr(EINVAL);
+	}
 	/*
 	 * Verify that the caller has the appropriate privilege; RTM_GET
 	 * is the only operation the non-superuser is allowed.
 	 */
 	if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE,
 , rtm, NULL, NULL) != 0)
 		senderr(EACCES);
 	switch (rtm->rtm_type) {
 	case RTM_ADD:
 		if (info.rti_info[RTAX_GATEWAY] == NULL) {
 			senderr(EINVAL);
+		}
 		error = rtrequest1(rtm->rtm_type, &info, &saved_nrt);
 		if (error == 0 && saved_nrt) {
 			rt_setmetrics(rtm->rtm_inits, rtm, saved_nrt);
 			saved_nrt->rt_refcnt--;
+		}
 		break;
 	case RTM_DELETE:
 		error = rtrequest1(rtm->rtm_type, &info, &saved_nrt);
 		if (error == 0) {
 			(rt = saved_nrt)->rt_refcnt++;
 			goto report;
+		}
 		break;
 	case RTM_GET:
 	case RTM_CHANGE:
 	case RTM_LOCK:
                 /* XXX This will mask info.rti_info[RTAX_DST] with
 		 * info.rti_info[RTAX_NETMASK] before
                  * searching.  It did not used to do that.  --dyoung
 		 */
 		error = rtrequest1(RTM_GET, &info, &rt);
 		if (error != 0)
 			senderr(error);
 		if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */
 			if (memcmp(info.rti_info[RTAX_DST], rt_getkey(rt),
 			    info.rti_info[RTAX_DST]->sa_len) != 0)
 				senderr(ESRCH);
 			if (info.rti_info[RTAX_NETMASK] == NULL &&
 			    rt_mask(rt) != NULL)
 				senderr(ETOOMANYREFS);
+		}
 		switch (rtm->rtm_type) {
 		case RTM_GET:
 		report:
 			info.rti_info[RTAX_DST] = rt_getkey(rt);
 			info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
 			info.rti_info[RTAX_NETMASK] = rt_mask(rt);
 			info.rti_info[RTAX_TAG] = rt_gettag(rt);
 			if ((rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) == 0)
+				;
 			else if ((ifp = rt->rt_ifp) != NULL) {
 				const struct ifaddr *rtifa;
 				info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
                                 /* rtifa used to be simply rt->rt_ifa.
                                  * If rt->rt_ifa != NULL, then
                                  * rt_get_ifa() != NULL.  So this
                                  * ought to still be safe. --dyoung
 				 */
 				rtifa = rt_get_ifa(rt);
 				info.rti_info[RTAX_IFA] = rtifa->ifa_addr;
 #ifdef RTSOCK_DEBUG
 				if (info.rti_info[RTAX_IFA]->sa_family ==
 				    AF_INET) {
 					printf("%s: copying out RTAX_IFA %s ",
 					    __func__, inet_ntoa(
 					    ((const struct sockaddr_in *)
 					    info.rti_info[RTAX_IFA])->sin_addr)
 					    );
 					printf("for info.rti_info[RTAX_DST] %s "
 					    "ifa_getifa %p ifa_seqno %p\n",
 					    inet_ntoa(
 					    ((const struct sockaddr_in *)
 					    info.rti_info[RTAX_DST])->sin_addr),
 					    (void *)rtifa->ifa_getifa,
 					    rtifa->ifa_seqno);
+				}
 #endif /* RTSOCK_DEBUG */
 				if (ifp->if_flags & IFF_POINTOPOINT) {
 					info.rti_info[RTAX_BRD] =
 					    rtifa->ifa_dstaddr;
 				} else
 					info.rti_info[RTAX_BRD] = NULL;
 				rtm->rtm_index = ifp->if_index;
 			} else {
 				info.rti_info[RTAX_IFP] = NULL;
 				info.rti_info[RTAX_IFA] = NULL;
+			}
 			(void)rt_msg2(rtm->rtm_type, &info, NULL, NULL, &len);
 			if (len > rtm->rtm_msglen) {
 				old_rtm = rtm;
 				R_Malloc(rtm, struct rt_xmsghdr *, len);
 				if (rtm == NULL)
 					senderr(ENOBUFS);
 				(void)memcpy(rtm, old_rtm, old_rtm->rtm_msglen);
+			}
 			(void)rt_msg2(rtm->rtm_type, &info, rtm, NULL, 0);
 			rtm->rtm_flags = rt->rt_flags;
 			rtm_setmetrics(rt, rtm);
 			rtm->rtm_addrs = info.rti_addrs;
 			break;
 		case RTM_CHANGE:
 			/*
 			 * new gateway could require new ifaddr, ifp;
 			 * flags may also be different; ifp may be specified
 			 * by ll sockaddr when protocol address is ambiguous
 			 */
 			if ((error = rt_getifa(&info)) != 0)
 				senderr(error);
 			if (info.rti_info[RTAX_GATEWAY] &&
 			    rt_setgate(rt, info.rti_info[RTAX_GATEWAY]))
 				senderr(EDQUOT);
 			if (info.rti_info[RTAX_TAG])
 				rt_settag(rt, info.rti_info[RTAX_TAG]);
 			/* new gateway could require new ifaddr, ifp;
 			   flags may also be different; ifp may be specified
 			   by ll sockaddr when protocol address is ambiguous */
 			if (info.rti_info[RTAX_IFP] &&
 			    (ifa = ifa_ifwithnet(info.rti_info[RTAX_IFP])) &&
 			    (ifp = ifa->ifa_ifp) && (info.rti_info[RTAX_IFA] ||
 			    info.rti_info[RTAX_GATEWAY])) {
 				if (info.rti_info[RTAX_IFA] == NULL ||
 				    (ifa = ifa_ifwithaddr(
 				    info.rti_info[RTAX_IFA])) == NULL)
 					ifa = ifaof_ifpforaddr(
 					    info.rti_info[RTAX_IFA] ?
 					    info.rti_info[RTAX_IFA] :
 					    info.rti_info[RTAX_GATEWAY], ifp);
 			} else if ((info.rti_info[RTAX_IFA] &&
 			    (ifa = ifa_ifwithaddr(info.rti_info[RTAX_IFA]))) ||
 			    (info.rti_info[RTAX_GATEWAY] &&
 			    (ifa = ifa_ifwithroute(rt->rt_flags,
 			    rt_getkey(rt), info.rti_info[RTAX_GATEWAY])))) {
 				ifp = ifa->ifa_ifp;
+			}
 			if (ifa) {
 				struct ifaddr *oifa = rt->rt_ifa;
 				if (oifa != ifa) {
 					if (oifa && oifa->ifa_rtrequest) {
 						oifa->ifa_rtrequest(RTM_DELETE,
 						    rt, &info);
+					}
 					rt_replace_ifa(rt, ifa);
 					rt->rt_ifp = ifp;
+				}
+			}
 			if (ifp && rt->rt_ifp != ifp)
 				rt->rt_ifp = ifp;
 			rt_setmetrics(rtm->rtm_inits, rtm, rt);
 			if (rt->rt_flags != info.rti_flags)
 				rt->rt_flags = (info.rti_flags & ~PRESERVED_RTF)
 				    | (rt->rt_flags & PRESERVED_RTF);
 			if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
 				rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info);
 			/*FALLTHROUGH*/
 		case RTM_LOCK:
 			rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
 			rt->rt_rmx.rmx_locks |=
 			    (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
 			break;
+		}
 		break;
 	default:
 		senderr(EOPNOTSUPP);
+	}
 flush:
 	if (rtm) {
 		if (error)
 			rtm->rtm_errno = error;
 		else
 			rtm->rtm_flags |= RTF_DONE;
+	}
 	family = info.rti_info[RTAX_DST] ? info.rti_info[RTAX_DST]->sa_family :
 ;
 	/* We cannot free old_rtm until we have stopped using the
 	 * pointers in info, some of which may point to sockaddrs
 	 * in old_rtm.
 	 */
 	if (old_rtm != NULL)
 		Free(old_rtm);
 	if (rt)
 		rtfree(rt);
+    {
 	struct rawcb *rp = NULL;
 	/*
 	 * Check to see if we don't want our own messages.
 	 */
 	if ((so->so_options & SO_USELOOPBACK) == 0) {
 		if (COMPATNAME(route_info).ri_cb.any_count <= 1) {
 			if (rtm)
 				Free(rtm);
 			m_freem(m);
 			return error;
+		}
 		/* There is another listener, so construct message */
 		rp = sotorawcb(so);
+	}
 	if (rtm) {
 		m_copyback(m, 0, rtm->rtm_msglen, rtm);
 		if (m->m_pkthdr.len < rtm->rtm_msglen) {
 			m_freem(m);
 			m = NULL;
 		} else if (m->m_pkthdr.len > rtm->rtm_msglen)
 			m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
 		Free(rtm);
+	}
 	if (rp)
 		rp->rcb_proto.sp_family = 0; /* Avoid us */
 	if (family)
 		proto.sp_protocol = family;
 	if (m)
 		raw_input(m, &proto, &COMPATNAME(route_info).ri_src,
 		    &COMPATNAME(route_info).ri_dst);
 	if (rp)
 		rp->rcb_proto.sp_family = PF_XROUTE;
+    }
 	return error;
+}
 static void
 rt_setmetrics(int which, const struct rt_xmsghdr *in, struct rtentry *out)
+{
 #define metric(f, e) if (which & (f)) out->rt_rmx.e = in->rtm_rmx.e;
 	metric(RTV_RPIPE, rmx_recvpipe);
 	metric(RTV_SPIPE, rmx_sendpipe);
 	metric(RTV_SSTHRESH, rmx_ssthresh);
 	metric(RTV_RTT, rmx_rtt);
 	metric(RTV_RTTVAR, rmx_rttvar);
 	metric(RTV_HOPCOUNT, rmx_hopcount);
 	metric(RTV_MTU, rmx_mtu);
 	metric(RTV_EXPIRE, rmx_expire);
 #undef metric
+}
 static void
 rtm_setmetrics(const struct rtentry *in, struct rt_xmsghdr *out)
+{
 #define metric(e) out->rtm_rmx.e = in->rt_rmx.e;
 	metric(rmx_recvpipe);
 	metric(rmx_sendpipe);
 	metric(rmx_ssthresh);
 	metric(rmx_rtt);
 	metric(rmx_rttvar);
 	metric(rmx_hopcount);
 	metric(rmx_mtu);
 	metric(rmx_expire);
 #undef metric
+}
 static int
 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim,
     struct rt_addrinfo *rtinfo)
+{
 	const struct sockaddr *sa = NULL;	/* Quell compiler warning */
 	int i;
 	for (i = 0; i < RTAX_MAX && cp < cplim; i++) {
 		if ((rtinfo->rti_addrs & (1 << i)) == 0)
 			continue;
 		rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp;
 		RT_XADVANCE(cp, sa);
+	}
 	/*
 	 * Check for extra addresses specified, except RTM_GET asking
 	 * for interface info.
 	 */
 	if (rtmtype == RTM_GET) {
 		if (((rtinfo->rti_addrs &
 		    (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0 << i)) != 0)
 			return 1;
 	} else if ((rtinfo->rti_addrs & (~0 << i)) != 0)
 		return 1;
 	/* Check for bad data length.  */
 	if (cp != cplim) {
 		if (i == RTAX_NETMASK + 1 && sa != NULL &&
 		    cp - RT_XROUNDUP(sa->sa_len) + sa->sa_len == cplim)
 			/*
 			 * The last sockaddr was info.rti_info[RTAX_NETMASK].
 			 * We accept this for now for the sake of old
 			 * binaries or third party softwares.
 			 */
+			;
 		else
 			return 1;
+	}
 	return 0;
+}
 static int
 rt_getlen(int type)
+{
 #ifndef COMPAT_RTSOCK
 	CTASSERT(__alignof(struct ifa_msghdr) >= sizeof(uint64_t));
 	CTASSERT(__alignof(struct if_msghdr) >= sizeof(uint64_t));
 	CTASSERT(__alignof(struct if_announcemsghdr) >= sizeof(uint64_t));
 	CTASSERT(__alignof(struct rt_msghdr) >= sizeof(uint64_t));
 #endif
 	switch (type) {
 	case RTM_DELADDR:
 	case RTM_NEWADDR:
 	case RTM_CHGADDR:
 		return sizeof(struct ifa_xmsghdr);
 	case RTM_OOIFINFO:
 #ifdef COMPAT_14
 		return sizeof(struct if_msghdr14);
 #else
 #ifdef DIAGNOSTIC
 		printf("RTM_OOIFINFO\n");
 #endif
 		return -1;
 #endif
 	case RTM_OIFINFO:
 #ifdef COMPAT_50
 		return sizeof(struct if_msghdr50);
 #else
 #ifdef DIAGNOSTIC
 		printf("RTM_OIFINFO\n");
 #endif
 		return -1;
 #endif
 	case RTM_IFINFO:
 		return sizeof(struct if_xmsghdr);
 	case RTM_IFANNOUNCE:
 	case RTM_IEEE80211:
 		return sizeof(struct if_xannouncemsghdr);
 	default:
 		return sizeof(struct rt_xmsghdr);
+	}
+}
 struct mbuf *
 COMPATNAME(rt_msg1)(int type, struct rt_addrinfo *rtinfo, void *data, int datalen)
+{
 	struct rt_xmsghdr *rtm;
 	struct mbuf *m;
 	int i;
 	const struct sockaddr *sa;
 	int len, dlen;
 	m = m_gethdr(M_DONTWAIT, MT_DATA);
 	if (m == NULL)
 		return m;
 	MCLAIM(m, &COMPATNAME(routedomain).dom_mowner);
 	if ((len = rt_getlen(type)) == -1)
 		goto out;
 	if (len > MHLEN + MLEN)
 		panic("%s: message too long", __func__);
 	else if (len > MHLEN) {
 		m->m_next = m_get(M_DONTWAIT, MT_DATA);
 		if (m->m_next == NULL)
 			goto out;
 		MCLAIM(m->m_next, m->m_owner);
 		m->m_pkthdr.len = len;
 		m->m_len = MHLEN;
 		m->m_next->m_len = len - MHLEN;
 	} else {
 		m->m_pkthdr.len = m->m_len = len;
+	}
 	m->m_pkthdr.rcvif = NULL;
 	m_copyback(m, 0, datalen, data);
 	if (len > datalen)
 		(void)memset(mtod(m, char *) + datalen, 0, len - datalen);
 	rtm = mtod(m, struct rt_xmsghdr *);
 	for (i = 0; i < RTAX_MAX; i++) {
 		if ((sa = rtinfo->rti_info[i]) == NULL)
 			continue;
 		rtinfo->rti_addrs |= (1 << i);
 		dlen = RT_XROUNDUP(sa->sa_len);
 		m_copyback(m, len, sa->sa_len, sa);
 		if (dlen != sa->sa_len) {
 			/*
 			 * Up to 6 + 1 nul's since roundup is to
 			 * sizeof(uint64_t) (8 bytes)
 			 */
 			m_copyback(m, len + sa->sa_len,
 			    dlen - sa->sa_len, "\0\0\0\0\0\0");
+		}
 		len += dlen;
+	}
 	if (m->m_pkthdr.len != len)
 		goto out;
 	rtm->rtm_msglen = len;
 	rtm->rtm_version = RTM_XVERSION;
 	rtm->rtm_type = type;
 	return m;
 out:
 	m_freem(m);
 	return NULL;
+}
 /*
  * rt_msg2
+ *
  *	 fills 'cp' or 'w'.w_tmem with the routing socket message and
  *		returns the length of the message in 'lenp'.
+ *
  * if walkarg is 0, cp is expected to be 0 or a buffer large enough to hold
  *	the message
  * otherwise walkarg's w_needed is updated and if the user buffer is
  *	specified and w_needed indicates space exists the information is copied
  *	into the temp space (w_tmem). w_tmem is [re]allocated if necessary,
  *	if the allocation fails ENOBUFS is returned.
  */
 static int
 rt_msg2(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w,
 	int *lenp)
+{
 	int i;
 	int len, dlen, second_time = 0;
 	char *cp0, *cp = cpv;
 	rtinfo->rti_addrs = 0;
 again:
 	if ((len = rt_getlen(type)) == -1)
 		return EINVAL;
 	if ((cp0 = cp) != NULL)
 		cp += len;
 	for (i = 0; i < RTAX_MAX; i++) {
 		const struct sockaddr *sa;
 		if ((sa = rtinfo->rti_info[i]) == NULL)
 			continue;
 		rtinfo->rti_addrs |= (1 << i);
 		dlen = RT_XROUNDUP(sa->sa_len);
 		if (cp) {
 			int diff = dlen - sa->sa_len;
 			(void)memcpy(cp, sa, (size_t)sa->sa_len);
 			cp += sa->sa_len;
 			if (diff > 0) {
 				(void)memset(cp, 0, (size_t)diff);
 				cp += diff;
+			}
+		}
 		len += dlen;
+	}
 	if (cp == NULL && w != NULL && !second_time) {
 		struct rt_walkarg *rw = w;
 		rw->w_needed += len;
 		if (rw->w_needed <= 0 && rw->w_where) {
 			if (rw->w_tmemsize < len) {
 				if (rw->w_tmem)
 					free(rw->w_tmem, M_RTABLE);
 				rw->w_tmem = malloc(len, M_RTABLE, M_NOWAIT);
 				if (rw->w_tmem)
 					rw->w_tmemsize = len;
 				else
 					rw->w_tmemsize = 0;
+			}
 			if (rw->w_tmem) {
 				cp = rw->w_tmem;
 				second_time = 1;
 				goto again;
 			} else {
 				rw->w_tmemneeded = len;
 				return ENOBUFS;
+			}
+		}
+	}
 	if (cp) {
 		struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)cp0;
 		rtm->rtm_version = RTM_XVERSION;
 		rtm->rtm_type = type;
 		rtm->rtm_msglen = len;
+	}
 	if (lenp)
 		*lenp = len;
 	return 0;
+}
 /*
  * This routine is called to generate a message from the routing
  * socket indicating that a redirect has occurred, a routing lookup
  * has failed, or that a protocol has detected timeouts to a particular
  * destination.
  */
 void
 COMPATNAME(rt_missmsg)(int type, const struct rt_addrinfo *rtinfo, int flags,
     int error)
+{
 	struct rt_xmsghdr rtm;
 	struct mbuf *m;
 	const struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
 	struct rt_addrinfo info = *rtinfo;
 	COMPATCALL(rt_missmsg, (type, rtinfo, flags, error));
 	if (COMPATNAME(route_info).ri_cb.any_count == 0)
 		return;
 	memset(&rtm, 0, sizeof(rtm));
 	rtm.rtm_flags = RTF_DONE | flags;
 	rtm.rtm_errno = error;
 	m = COMPATNAME(rt_msg1)(type, &info, &rtm, sizeof(rtm));
 	if (m == NULL)
 		return;
 	mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs;
 	COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0);
+}
 /*
  * This routine is called to generate a message from the routing
  * socket indicating that the status of a network interface has changed.
  */
 void
 COMPATNAME(rt_ifmsg)(struct ifnet *ifp)
+{
 	struct if_xmsghdr ifm;
 	struct mbuf *m;
 	struct rt_addrinfo info;
 	COMPATCALL(rt_ifmsg, (ifp));
 	if (COMPATNAME(route_info).ri_cb.any_count == 0)
 		return;
 	(void)memset(&info, 0, sizeof(info));
 	(void)memset(&ifm, 0, sizeof(ifm));
 	ifm.ifm_index = ifp->if_index;
 	ifm.ifm_flags = ifp->if_flags;
 	ifm.ifm_data = ifp->if_data;
 	ifm.ifm_addrs = 0;
 	m = COMPATNAME(rt_msg1)(RTM_IFINFO, &info, &ifm, sizeof(ifm));
 	if (m == NULL)
 		return;
 	COMPATNAME(route_enqueue)(m, 0);
 #ifdef COMPAT_14
 	compat_14_rt_oifmsg(ifp);
 #endif
 #ifdef COMPAT_50
 	compat_50_rt_oifmsg(ifp);
 #endif
+}
 /*
  * This is called to generate messages from the routing socket
  * indicating a network interface has had addresses associated with it.
  * if we ever reverse the logic and replace messages TO the routing
  * socket indicate a request to configure interfaces, then it will
  * be unnecessary as the routing socket will automatically generate
  * copies of it.
  */
 void
 COMPATNAME(rt_newaddrmsg)(int cmd, struct ifaddr *ifa, int error,
     struct rtentry *rt)
+{
 #define	cmdpass(__cmd, __pass)	(((__cmd) << 2) | (__pass))
 	struct rt_addrinfo info;
 	const struct sockaddr *sa;
 	int pass;
 	struct mbuf *m;
 	struct ifnet *ifp;
 	struct rt_xmsghdr rtm;
 	struct ifa_xmsghdr ifam;
 	int ncmd;
 	KASSERT(ifa != NULL);
 	ifp = ifa->ifa_ifp;
 	COMPATCALL(rt_newaddrmsg, (cmd, ifa, error, rt));
 	if (COMPATNAME(route_info).ri_cb.any_count == 0)
 		return;
 	for (pass = 1; pass < 3; pass++) {
 		memset(&info, 0, sizeof(info));
 		switch (cmdpass(cmd, pass)) {
 		case cmdpass(RTM_ADD, 1):
 		case cmdpass(RTM_CHANGE, 1):
 		case cmdpass(RTM_DELETE, 2):
 		case cmdpass(RTM_NEWADDR, 1):
 		case cmdpass(RTM_DELADDR, 1):
 		case cmdpass(RTM_CHGADDR, 1):
 			switch (cmd) {
 			case RTM_ADD:
 				ncmd = RTM_NEWADDR;
 				break;
 			case RTM_DELETE:
 				ncmd = RTM_DELADDR;
 				break;
 			case RTM_CHANGE:
 				ncmd = RTM_CHGADDR;
 				break;
 			default:
 				ncmd = cmd;
+			}
 			info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
 			KASSERT(ifp->if_dl != NULL);
 			info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
 			info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
 			info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
 			memset(&ifam, 0, sizeof(ifam));
 			ifam.ifam_index = ifp->if_index;
 			ifam.ifam_metric = ifa->ifa_metric;
 			ifam.ifam_flags = ifa->ifa_flags;
 			m = COMPATNAME(rt_msg1)(ncmd, &info, &ifam, sizeof(ifam));
 			if (m == NULL)
 				continue;
 			mtod(m, struct ifa_xmsghdr *)->ifam_addrs =
 			    info.rti_addrs;
 			break;
 		case cmdpass(RTM_ADD, 2):
 		case cmdpass(RTM_CHANGE, 2):
 		case cmdpass(RTM_DELETE, 1):
 			if (rt == NULL)
 				continue;
 			info.rti_info[RTAX_NETMASK] = rt_mask(rt);
 			info.rti_info[RTAX_DST] = sa = rt_getkey(rt);
 			info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
 			memset(&rtm, 0, sizeof(rtm));
 			rtm.rtm_index = ifp->if_index;
 			rtm.rtm_flags |= rt->rt_flags;
 			rtm.rtm_errno = error;
 			m = COMPATNAME(rt_msg1)(cmd, &info, &rtm, sizeof(rtm));
 			if (m == NULL)
 				continue;
 			mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs;
 			break;
 		default:
 			continue;
+		}
 #ifdef DIAGNOSTIC
 		if (m == NULL)
 			panic("%s: called with wrong command", __func__);
 #endif
 		COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0);
+	}
 #undef cmdpass
+}
 static struct mbuf *
 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what,
     struct rt_addrinfo *info)
+{
 	struct if_xannouncemsghdr ifan;
 	memset(info, 0, sizeof(*info));
 	memset(&ifan, 0, sizeof(ifan));
 	ifan.ifan_index = ifp->if_index;
 	strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name));
 	ifan.ifan_what = what;
 	return COMPATNAME(rt_msg1)(type, info, &ifan, sizeof(ifan));
+}
 /*
  * This is called to generate routing socket messages indicating
  * network interface arrival and departure.
  */
 void
 COMPATNAME(rt_ifannouncemsg)(struct ifnet *ifp, int what)
+{
 	struct mbuf *m;
 	struct rt_addrinfo info;
 	COMPATCALL(rt_ifannouncemsg, (ifp, what));
 	if (COMPATNAME(route_info).ri_cb.any_count == 0)
 		return;
 	m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info);
 	if (m == NULL)
 		return;
 	COMPATNAME(route_enqueue)(m, 0);
+}
 /*
  * This is called to generate routing socket messages indicating
  * IEEE80211 wireless events.
  * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way.
  */
 void
 COMPATNAME(rt_ieee80211msg)(struct ifnet *ifp, int what, void *data,
 	size_t data_len)
+{
 	struct mbuf *m;
 	struct rt_addrinfo info;
 	COMPATCALL(rt_ieee80211msg, (ifp, what, data, data_len));
 	if (COMPATNAME(route_info).ri_cb.any_count == 0)
 		return;
 	m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info);
 	if (m == NULL)
 		return;
 	/*
 	 * Append the ieee80211 data.  Try to stick it in the
 	 * mbuf containing the ifannounce msg; otherwise allocate
 	 * a new mbuf and append.
+	 *
 	 * NB: we assume m is a single mbuf.
 	 */
 	if (data_len > M_TRAILINGSPACE(m)) {
 		struct mbuf *n = m_get(M_NOWAIT, MT_DATA);
 		if (n == NULL) {
 			m_freem(m);
 			return;
+		}
 		(void)memcpy(mtod(n, void *), data, data_len);
 		n->m_len = data_len;
 		m->m_next = n;
 	} else if (data_len > 0) {
 		(void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len);
 		m->m_len += data_len;
+	}
 	if (m->m_flags & M_PKTHDR)
 		m->m_pkthdr.len += data_len;
 	mtod(m, struct if_xannouncemsghdr *)->ifan_msglen += data_len;
 	COMPATNAME(route_enqueue)(m, 0);
+}
 /*
  * This is used in dumping the kernel table via sysctl().
  */
 static int
 sysctl_dumpentry(struct rtentry *rt, void *v)
+{
 	struct rt_walkarg *w = v;
 	int error = 0, size;
 	struct rt_addrinfo info;
 	if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
 		return 0;
 	memset(&info, 0, sizeof(info));
 	info.rti_info[RTAX_DST] = rt_getkey(rt);
 	info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
 	info.rti_info[RTAX_NETMASK] = rt_mask(rt);
 	info.rti_info[RTAX_TAG] = rt_gettag(rt);
 	if (rt->rt_ifp) {
 		const struct ifaddr *rtifa;
 		info.rti_info[RTAX_IFP] = rt->rt_ifp->if_dl->ifa_addr;
 		/* rtifa used to be simply rt->rt_ifa.  If rt->rt_ifa != NULL,
 		 * then rt_get_ifa() != NULL.  So this ought to still be safe.
 		 * --dyoung
 		 */
 		rtifa = rt_get_ifa(rt);
 		info.rti_info[RTAX_IFA] = rtifa->ifa_addr;
 		if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
 			info.rti_info[RTAX_BRD] = rtifa->ifa_dstaddr;
+	}
 	if ((error = rt_msg2(RTM_GET, &info, 0, w, &size)))
 		return error;
 	if (w->w_where && w->w_tmem && w->w_needed <= 0) {
 		struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)w->w_tmem;
 		rtm->rtm_flags = rt->rt_flags;
 		rtm->rtm_use = rt->rt_use;
 		rtm_setmetrics(rt, rtm);
 		KASSERT(rt->rt_ifp != NULL);
 		rtm->rtm_index = rt->rt_ifp->if_index;
 		rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
 		rtm->rtm_addrs = info.rti_addrs;
 		if ((error = copyout(rtm, w->w_where, size)) != 0)
 			w->w_where = NULL;
 		else
 			w->w_where = (char *)w->w_where + size;
+	}
 	return error;
+}
 static int
 sysctl_iflist(int af, struct rt_walkarg *w, int type)
+{
 	struct ifnet *ifp;
 	struct ifaddr *ifa;
 	struct	rt_addrinfo info;
 	int	len, error = 0;
 	memset(&info, 0, sizeof(info));
 	IFNET_FOREACH(ifp) {
 		if (w->w_arg && w->w_arg != ifp->if_index)
 			continue;
 		if (IFADDR_EMPTY(ifp))
 			continue;
 		info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr;
 		switch (type) {
 		case NET_RT_IFLIST:
 			error = rt_msg2(RTM_IFINFO, &info, NULL, w, &len);
 			break;
 #ifdef COMPAT_14
 		case NET_RT_OOIFLIST:
 			error = rt_msg2(RTM_OOIFINFO, &info, NULL, w, &len);
 			break;
 #endif
 #ifdef COMPAT_50
 		case NET_RT_OIFLIST:
 			error = rt_msg2(RTM_OIFINFO, &info, NULL, w, &len);
 			break;
 #endif
 		default:
 			panic("sysctl_iflist(1)");
+		}
 		if (error)
 			return error;
 		info.rti_info[RTAX_IFP] = NULL;
 		if (w->w_where && w->w_tmem && w->w_needed <= 0) {
 			switch (type) {
 			case NET_RT_IFLIST: {
 				struct if_xmsghdr *ifm;
 				ifm = (struct if_xmsghdr *)w->w_tmem;
 				ifm->ifm_index = ifp->if_index;
 				ifm->ifm_flags = ifp->if_flags;
 				ifm->ifm_data = ifp->if_data;
 				ifm->ifm_addrs = info.rti_addrs;
 				error = copyout(ifm, w->w_where, len);
 				if (error)
 					return error;
 				w->w_where = (char *)w->w_where + len;
 				break;
+			}
 #ifdef COMPAT_14
 			case NET_RT_OOIFLIST:
 				error = compat_14_iflist(ifp, w, &info, len);
 				if (error)
 					return error;
 				break;
 #endif
 #ifdef COMPAT_50
 			case NET_RT_OIFLIST:
 				error = compat_50_iflist(ifp, w, &info, len);
 				if (error)
 					return error;
 				break;
 #endif
 			default:
 				panic("sysctl_iflist(2)");
+			}
+		}
 		IFADDR_FOREACH(ifa, ifp) {
 			if (af && af != ifa->ifa_addr->sa_family)
 				continue;
 			info.rti_info[RTAX_IFA] = ifa->ifa_addr;
 			info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
 			info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
 			if ((error = rt_msg2(RTM_NEWADDR, &info, 0, w, &len)))
 				return error;
 			if (w->w_where && w->w_tmem && w->w_needed <= 0) {
 				struct ifa_xmsghdr *ifam;
 				ifam = (struct ifa_xmsghdr *)w->w_tmem;
 				ifam->ifam_index = ifa->ifa_ifp->if_index;
 				ifam->ifam_flags = ifa->ifa_flags;
 				ifam->ifam_metric = ifa->ifa_metric;
 				ifam->ifam_addrs = info.rti_addrs;
 				error = copyout(w->w_tmem, w->w_where, len);
 				if (error)
 					return error;
 				w->w_where = (char *)w->w_where + len;
+			}
+		}
 		info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
 		    info.rti_info[RTAX_BRD] = NULL;
+	}
 	return 0;
+}
 static int
 sysctl_rtable(SYSCTLFN_ARGS)
+{
 	void 	*where = oldp;
 	size_t	*given = oldlenp;
 	const void *new = newp;
 	int	i, s, error = EINVAL;
 	u_char  af;
 	struct	rt_walkarg w;
 	if (namelen == 1 && name[0] == CTL_QUERY)
 		return sysctl_query(SYSCTLFN_CALL(rnode));
 	if (new)
 		return EPERM;
 	if (namelen != 3)
 		return EINVAL;
 	af = name[0];
 	w.w_tmemneeded = 0;
 	w.w_tmemsize = 0;
 	w.w_tmem = NULL;
 again:
 	/* we may return here if a later [re]alloc of the t_mem buffer fails */
 	if (w.w_tmemneeded) {
 		w.w_tmem = malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK);
 		w.w_tmemsize = w.w_tmemneeded;
 		w.w_tmemneeded = 0;
+	}
 	w.w_op = name[1];
 	w.w_arg = name[2];
 	w.w_given = *given;
 	w.w_needed = 0 - w.w_given;
 	w.w_where = where;
 	s = splsoftnet();
 	switch (w.w_op) {
 	case NET_RT_DUMP:
 	case NET_RT_FLAGS:
 		for (i = 1; i <= AF_MAX; i++)
 			if ((af == 0 || af == i) &&
 			    (error = rt_walktree(i, sysctl_dumpentry, &w)))
 				break;
 		break;