xnu-6153.11.26.tar.gz

[apple/xnu.git] / bsd / net / rtsock.c

diff --git a/bsd/net/rtsock.c b/bsd/net/rtsock.c
index b6836fd6c07887efa35aadfdeea5dc8c3797b3f0..a8b2601593c7397ac9d3339cecad3917be078234 100644 (file)
--- a/bsd/net/rtsock.c
+++ b/bsd/net/rtsock.c
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.

- * 
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,7 +22,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*


@@ -60,9 +60,9 @@
  *     @(#)rtsock.c    8.5 (Berkeley) 11/2/94
  */
 
  *     @(#)rtsock.c    8.5 (Berkeley) 11/2/94
  */
 

-

 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/param.h>
 #include <sys/systm.h>

+#include <sys/kauth.h>

 #include <sys/kernel.h>
 #include <sys/sysctl.h>
 #include <sys/proc.h>
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
 #include <sys/proc.h>


@@ -73,57 +73,95 @@
 #include <sys/domain.h>
 #include <sys/protosw.h>
 #include <sys/syslog.h>
 #include <sys/domain.h>
 #include <sys/protosw.h>
 #include <sys/syslog.h>

-#include <kern/lock.h>
+#include <sys/mcache.h>
+#include <kern/locks.h>
+#include <sys/codesign.h>

 
 #include <net/if.h>
 #include <net/route.h>
 
 #include <net/if.h>
 #include <net/route.h>

+#include <net/dlil.h>

 #include <net/raw_cb.h>
 #include <netinet/in.h>
 #include <net/raw_cb.h>
 #include <netinet/in.h>

-
-#include <machine/spl.h>
+#include <netinet/in_var.h>
+#include <netinet/in_arp.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet6/nd6.h>

 
 extern struct rtstat rtstat;
 
 extern struct rtstat rtstat;

-extern u_long route_generation;
-extern int use_routegenid;
-extern int check_routeselfref;
+extern struct domain routedomain_s;
+static struct domain *routedomain = NULL;

 
 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
 
 
 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
 

-extern lck_mtx_t *rt_mtx;
-static struct  sockaddr route_dst = { 2, PF_ROUTE, { 0, } };
-static struct  sockaddr route_src = { 2, PF_ROUTE, { 0, } };
-static struct  sockaddr sa_zero   = { sizeof(sa_zero), AF_INET, { 0, } };
-static struct  sockproto route_proto = { PF_ROUTE,  0 };
+static struct sockaddr route_dst = { .sa_len = 2, .sa_family = PF_ROUTE, .sa_data = { 0, } };
+static struct sockaddr route_src = { .sa_len = 2, .sa_family = PF_ROUTE, .sa_data = { 0, } };
+static struct sockaddr sa_zero   = { .sa_len = sizeof(sa_zero), .sa_family = AF_INET, .sa_data = { 0, } };
+
+struct route_cb {
+       u_int32_t       ip_count;       /* attached w/ AF_INET */
+       u_int32_t       ip6_count;      /* attached w/ AF_INET6 */
+       u_int32_t       any_count;      /* total attached */
+};
+
+static struct route_cb route_cb;

 
 struct walkarg {
 
 struct walkarg {

-       int     w_tmemsize;
-       int     w_op, w_arg;
-       caddr_t w_tmem;
+       int     w_tmemsize;
+       int     w_op, w_arg;
+       caddr_t w_tmem;

        struct sysctl_req *w_req;
 };
 
        struct sysctl_req *w_req;
 };
 

-static struct mbuf *
-               rt_msg1(int, struct rt_addrinfo *);
-static int     rt_msg2(int, struct rt_addrinfo *, caddr_t, struct walkarg *);
-static int     rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *);
-static int     sysctl_dumpentry(struct radix_node *rn, void *vw);
-static int     sysctl_iflist(int af, struct walkarg *w);
-static int     sysctl_iflist2(int af, struct walkarg *w);
-static int      route_output(struct mbuf *, struct socket *);
-static void     rt_setmetrics(u_long, struct rt_metrics *, struct rt_metrics *);
-static void    rt_setif(struct rtentry *, struct sockaddr *, struct sockaddr *,
-                   struct sockaddr *, unsigned int);
-
-#define        SIN(sa)         ((struct sockaddr_in *)(size_t)(sa))
-
-/* Sleazy use of local variables throughout file, warning!!!! */
-#define dst    info.rti_info[RTAX_DST]
-#define gate   info.rti_info[RTAX_GATEWAY]
-#define netmask        info.rti_info[RTAX_NETMASK]
-#define genmask        info.rti_info[RTAX_GENMASK]
-#define ifpaddr        info.rti_info[RTAX_IFP]
-#define ifaaddr        info.rti_info[RTAX_IFA]
-#define brdaddr        info.rti_info[RTAX_BRD]
+static void route_dinit(struct domain *);
+static int rts_abort(struct socket *);
+static int rts_attach(struct socket *, int, struct proc *);
+static int rts_bind(struct socket *, struct sockaddr *, struct proc *);
+static int rts_connect(struct socket *, struct sockaddr *, struct proc *);
+static int rts_detach(struct socket *);
+static int rts_disconnect(struct socket *);
+static int rts_peeraddr(struct socket *, struct sockaddr **);
+static int rts_send(struct socket *, int, struct mbuf *, struct sockaddr *,
+    struct mbuf *, struct proc *);
+static int rts_shutdown(struct socket *);
+static int rts_sockaddr(struct socket *, struct sockaddr **);
+
+static int route_output(struct mbuf *, struct socket *);
+static int rt_setmetrics(u_int32_t, struct rt_metrics *, struct rtentry *);
+static void rt_getmetrics(struct rtentry *, struct rt_metrics *);
+static void rt_setif(struct rtentry *, struct sockaddr *, struct sockaddr *,
+    struct sockaddr *, unsigned int);
+static int rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *);
+static struct mbuf *rt_msg1(int, struct rt_addrinfo *);
+static int rt_msg2(int, struct rt_addrinfo *, caddr_t, struct walkarg *,
+    kauth_cred_t *);
+static int sysctl_dumpentry(struct radix_node *rn, void *vw);
+static int sysctl_dumpentry_ext(struct radix_node *rn, void *vw);
+static int sysctl_iflist(int af, struct walkarg *w);
+static int sysctl_iflist2(int af, struct walkarg *w);
+static int sysctl_rtstat(struct sysctl_req *);
+static int sysctl_rttrash(struct sysctl_req *);
+static int sysctl_rtsock SYSCTL_HANDLER_ARGS;
+
+SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD | CTLFLAG_LOCKED,
+    sysctl_rtsock, "");
+
+SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "routing");
+
+/* Align x to 1024 (only power of 2) assuming x is positive */
+#define ALIGN_BYTES(x) do {                                             \
+       x = P2ALIGN(x, 1024);                                           \
+} while(0)
+
+#define ROUNDUP32(a)                                                    \
+       ((a) > 0 ? (1 + (((a) - 1) | (sizeof (uint32_t) - 1))) :        \
+       sizeof (uint32_t))
+
+#define ADVANCE32(x, n)                                                 \
+       (x += ROUNDUP32((n)->sa_len))
+
+#define RT_HAS_IFADDR(rt)                                               \
+       ((rt)->rt_ifa != NULL && (rt)->rt_ifa->ifa_addr != NULL)

 
 /*
  * It really doesn't make any sense at all for this code to share much
 
 /*
  * It really doesn't make any sense at all for this code to share much


@@ -132,36 +170,28 @@ static void       rt_setif(struct rtentry *, struct sockaddr *, struct sockaddr *,
 static int
 rts_abort(struct socket *so)
 {
 static int
 rts_abort(struct socket *so)
 {

-       int error;
-       
-       error = raw_usrreqs.pru_abort(so);
-       return error;
+       return raw_usrreqs.pru_abort(so);

 }
 
 /* pru_accept is EOPNOTSUPP */
 
 static int
 }
 
 /* pru_accept is EOPNOTSUPP */
 
 static int

-rts_attach(struct socket *so, int proto, __unused struct proc *p)
+rts_attach(struct socket *so, int proto, struct proc *p)

 {
 {

+#pragma unused(p)

        struct rawcb *rp;
        int error;
 
        struct rawcb *rp;
        int error;
 

-       if (sotorawcb(so) != 0)
-               return EISCONN; /* XXX panic? */
-       MALLOC(rp, struct rawcb *, sizeof *rp, M_PCB, M_WAITOK); /* XXX */
-       if (rp == 0)
+       VERIFY(so->so_pcb == NULL);
+
+       MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK | M_ZERO);
+       if (rp == NULL) {

                return ENOBUFS;
                return ENOBUFS;

-       bzero(rp, sizeof *rp);
+       }

 
 

-       /*
-        * The splnet() is necessary to block protocols from sending
-        * error notifications (like RTM_REDIRECT or RTM_LOSING) while
-        * this PCB is extant but incompletely initialized.
-        * Probably we should try to do more of this work beforehand and
-        * eliminate the spl.
-        */

        so->so_pcb = (caddr_t)rp;
        so->so_pcb = (caddr_t)rp;

-       error = raw_attach(so, proto);  /* don't use raw_usrreqs.pru_attach, it checks for SS_PRIV */
+       /* don't use raw_usrreqs.pru_attach, it checks for SS_PRIV */
+       error = raw_attach(so, proto);

        rp = sotorawcb(so);
        if (error) {
                FREE(rp, M_PCB);
        rp = sotorawcb(so);
        if (error) {
                FREE(rp, M_PCB);


@@ -170,24 +200,17 @@ rts_attach(struct socket *so, int proto, __unused struct proc *p)
                return error;
        }
 
                return error;
        }
 

-       switch(rp->rcb_proto.sp_protocol) {
-//####LD route_cb needs looking
+       switch (rp->rcb_proto.sp_protocol) {

        case AF_INET:
        case AF_INET:

-               route_cb.ip_count++;
+               atomic_add_32(&route_cb.ip_count, 1);

                break;
        case AF_INET6:
                break;
        case AF_INET6:

-               route_cb.ip6_count++;
-               break;
-       case AF_IPX:
-               route_cb.ipx_count++;
-               break;
-       case AF_NS:
-               route_cb.ns_count++;
+               atomic_add_32(&route_cb.ip6_count, 1);

                break;
        }
        rp->rcb_faddr = &route_src;
                break;
        }
        rp->rcb_faddr = &route_src;

-       route_cb.any_count++;
-       /* the socket is already locked when we enter rts_attach */ 
+       atomic_add_32(&route_cb.any_count, 1);
+       /* the socket is already locked when we enter rts_attach */

        soisconnected(so);
        so->so_options |= SO_USELOOPBACK;
        return 0;
        soisconnected(so);
        so->so_options |= SO_USELOOPBACK;
        return 0;


@@ -196,17 +219,13 @@ rts_attach(struct socket *so, int proto, __unused struct proc *p)
 static int
 rts_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
 {
 static int
 rts_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
 {

-       int error;
-       error = raw_usrreqs.pru_bind(so, nam, p); /* xxx just EINVAL */
-       return error;
+       return raw_usrreqs.pru_bind(so, nam, p); /* xxx just EINVAL */

 }
 
 static int
 rts_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
 {
 }
 
 static int
 rts_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
 {

-       int error;
-       error = raw_usrreqs.pru_connect(so, nam, p); /* XXX just EINVAL */
-       return error;
+       return raw_usrreqs.pru_connect(so, nam, p); /* XXX just EINVAL */

 }
 
 /* pru_connect2 is EOPNOTSUPP */
 }
 
 /* pru_connect2 is EOPNOTSUPP */


@@ -216,35 +235,25 @@ static int
 rts_detach(struct socket *so)
 {
        struct rawcb *rp = sotorawcb(so);
 rts_detach(struct socket *so)
 {
        struct rawcb *rp = sotorawcb(so);

-       int error;

 
 

-       if (rp != 0) {
-               switch(rp->rcb_proto.sp_protocol) {
-               case AF_INET:
-                       route_cb.ip_count--;
-                       break;
-               case AF_INET6:
-                       route_cb.ip6_count--;
-                       break;
-               case AF_IPX:
-                       route_cb.ipx_count--;
-                       break;
-               case AF_NS:
-                       route_cb.ns_count--;
-                       break;
-               }
-               route_cb.any_count--;
+       VERIFY(rp != NULL);
+
+       switch (rp->rcb_proto.sp_protocol) {
+       case AF_INET:
+               atomic_add_32(&route_cb.ip_count, -1);
+               break;
+       case AF_INET6:
+               atomic_add_32(&route_cb.ip6_count, -1);
+               break;

        }
        }

-       error = raw_usrreqs.pru_detach(so);
-       return error;
+       atomic_add_32(&route_cb.any_count, -1);
+       return raw_usrreqs.pru_detach(so);

 }
 
 static int
 rts_disconnect(struct socket *so)
 {
 }
 
 static int
 rts_disconnect(struct socket *so)
 {

-       int error;
-       error = raw_usrreqs.pru_disconnect(so);
-       return error;
+       return raw_usrreqs.pru_disconnect(so);

 }
 
 /* pru_listen is EOPNOTSUPP */
 }
 
 /* pru_listen is EOPNOTSUPP */


@@ -252,9 +261,7 @@ rts_disconnect(struct socket *so)
 static int
 rts_peeraddr(struct socket *so, struct sockaddr **nam)
 {
 static int
 rts_peeraddr(struct socket *so, struct sockaddr **nam)
 {

-       int error;
-       error = raw_usrreqs.pru_peeraddr(so, nam);
-       return error;
+       return raw_usrreqs.pru_peeraddr(so, nam);

 }
 
 /* pru_rcvd is EOPNOTSUPP */
 }
 
 /* pru_rcvd is EOPNOTSUPP */


@@ -262,11 +269,9 @@ rts_peeraddr(struct socket *so, struct sockaddr **nam)
 
 static int
 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
 
 static int
 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,

-        struct mbuf *control, struct proc *p)
+    struct mbuf *control, struct proc *p)

 {
 {

-       int error;
-       error = raw_usrreqs.pru_send(so, flags, m, nam, control, p);
-       return error;
+       return raw_usrreqs.pru_send(so, flags, m, nam, control, p);

 }
 
 /* pru_sense is null */
 }
 
 /* pru_sense is null */


@@ -274,25 +279,28 @@ rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
 static int
 rts_shutdown(struct socket *so)
 {
 static int
 rts_shutdown(struct socket *so)
 {

-       int  error;
-       error = raw_usrreqs.pru_shutdown(so);
-       return error;
+       return raw_usrreqs.pru_shutdown(so);

 }
 
 static int
 rts_sockaddr(struct socket *so, struct sockaddr **nam)
 {
 }
 
 static int
 rts_sockaddr(struct socket *so, struct sockaddr **nam)
 {

-       int error;
-       error = raw_usrreqs.pru_sockaddr(so, nam);
-       return error;
+       return raw_usrreqs.pru_sockaddr(so, nam);

 }
 
 static struct pr_usrreqs route_usrreqs = {
 }
 
 static struct pr_usrreqs route_usrreqs = {

-       rts_abort, pru_accept_notsupp, rts_attach, rts_bind,
-       rts_connect, pru_connect2_notsupp, pru_control_notsupp,
-       rts_detach, rts_disconnect, pru_listen_notsupp, rts_peeraddr,
-       pru_rcvd_notsupp, pru_rcvoob_notsupp, rts_send, pru_sense_null,
-       rts_shutdown, rts_sockaddr, sosend, soreceive, pru_sopoll_notsupp
+       .pru_abort =            rts_abort,
+       .pru_attach =           rts_attach,
+       .pru_bind =             rts_bind,
+       .pru_connect =          rts_connect,
+       .pru_detach =           rts_detach,
+       .pru_disconnect =       rts_disconnect,
+       .pru_peeraddr =         rts_peeraddr,
+       .pru_send =             rts_send,
+       .pru_shutdown =         rts_shutdown,
+       .pru_sockaddr =         rts_sockaddr,
+       .pru_sosend =           sosend,
+       .pru_soreceive =        soreceive,

 };
 
 /*ARGSUSED*/
 };
 
 /*ARGSUSED*/


@@ -305,39 +313,41 @@ route_output(struct mbuf *m, struct socket *so)
        struct radix_node_head *rnh;
        struct rt_addrinfo info;
        int len, error = 0;
        struct radix_node_head *rnh;
        struct rt_addrinfo info;
        int len, error = 0;

+       sa_family_t dst_sa_family = 0;

        struct ifnet *ifp = NULL;
        struct ifnet *ifp = NULL;

-#ifndef __APPLE__
-       struct proc  *curproc = current_proc();
-#endif

        struct sockaddr_in dst_in, gate_in;
        int sendonlytoself = 0;
        unsigned int ifscope = IFSCOPE_NONE;
        struct sockaddr_in dst_in, gate_in;
        int sendonlytoself = 0;
        unsigned int ifscope = IFSCOPE_NONE;

+       struct rawcb *rp = NULL;
+       boolean_t is_router = FALSE;
+#define senderr(e) { error = (e); goto flush; }
+       if (m == NULL || ((m->m_len < sizeof(intptr_t)) &&
+           (m = m_pullup(m, sizeof(intptr_t))) == NULL)) {
+               return ENOBUFS;
+       }
+       VERIFY(m->m_flags & M_PKTHDR);

 
 

-#define senderr(e) { error = e; goto flush;}
-       if (m == NULL ||
-           ((m->m_len < sizeof(long)) && (m = m_pullup(m, sizeof(long))) == 0))
-               return (ENOBUFS);
-       if ((m->m_flags & M_PKTHDR) == 0)
-               panic("route_output");
-
-       /* unlock the socket (but keep a reference) it won't be accessed until raw_input appends to it. */
+       /*
+        * Unlock the socket (but keep a reference) it won't be
+        * accessed until raw_input appends to it.
+        */

        socket_unlock(so, 0);
        socket_unlock(so, 0);

-       lck_mtx_lock(rt_mtx);
+       lck_mtx_lock(rnh_lock);

 
        len = m->m_pkthdr.len;
        if (len < sizeof(*rtm) ||
            len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
 
        len = m->m_pkthdr.len;
        if (len < sizeof(*rtm) ||
            len != mtod(m, struct rt_msghdr *)->rtm_msglen) {

-               dst = NULL;
+               info.rti_info[RTAX_DST] = NULL;

                senderr(EINVAL);
        }
        R_Malloc(rtm, struct rt_msghdr *, len);
        if (rtm == NULL) {
                senderr(EINVAL);
        }
        R_Malloc(rtm, struct rt_msghdr *, len);
        if (rtm == NULL) {

-               dst = NULL;
+               info.rti_info[RTAX_DST] = NULL;

                senderr(ENOBUFS);
        }
        m_copydata(m, 0, len, (caddr_t)rtm);
        if (rtm->rtm_version != RTM_VERSION) {
                senderr(ENOBUFS);
        }
        m_copydata(m, 0, len, (caddr_t)rtm);
        if (rtm->rtm_version != RTM_VERSION) {

-               dst = NULL;
+               info.rti_info[RTAX_DST] = NULL;

                senderr(EPROTONOSUPPORT);
        }
 
                senderr(EPROTONOSUPPORT);
        }
 


@@ -346,8 +356,9 @@ route_output(struct mbuf *m, struct socket *so)
         * all RTM_GETs to be silent in the future, so this is private for now.
         */
        if (rtm->rtm_type == RTM_GET_SILENT) {
         * all RTM_GETs to be silent in the future, so this is private for now.
         */
        if (rtm->rtm_type == RTM_GET_SILENT) {

-               if ((so->so_options & SO_USELOOPBACK) == 0)
+               if (!(so->so_options & SO_USELOOPBACK)) {

                        senderr(EINVAL);
                        senderr(EINVAL);

+               }

                sendonlytoself = 1;
                rtm->rtm_type = RTM_GET;
        }
                sendonlytoself = 1;
                rtm->rtm_type = RTM_GET;
        }


@@ -356,346 +367,537 @@ route_output(struct mbuf *m, struct socket *so)
         * Perform permission checking, only privileged sockets
         * may perform operations other than RTM_GET
         */
         * Perform permission checking, only privileged sockets
         * may perform operations other than RTM_GET
         */

-       if (rtm->rtm_type != RTM_GET && (so->so_state & SS_PRIV) == 0) {
-               dst = NULL;
+       if (rtm->rtm_type != RTM_GET && !(so->so_state & SS_PRIV)) {
+               info.rti_info[RTAX_DST] = NULL;

                senderr(EPERM);
        }
 
        rtm->rtm_pid = proc_selfpid();
        info.rti_addrs = rtm->rtm_addrs;
        if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {
                senderr(EPERM);
        }
 
        rtm->rtm_pid = proc_selfpid();
        info.rti_addrs = rtm->rtm_addrs;
        if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {

-               dst = NULL;
+               info.rti_info[RTAX_DST] = NULL;

                senderr(EINVAL);
        }
                senderr(EINVAL);
        }

-       if (dst == NULL || (dst->sa_family >= AF_MAX) ||
-           (gate != NULL && (gate->sa_family >= AF_MAX))) {
+       if (info.rti_info[RTAX_DST] == NULL ||
+           info.rti_info[RTAX_DST]->sa_family >= AF_MAX ||
+           (info.rti_info[RTAX_GATEWAY] != NULL &&
+           info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) {

                senderr(EINVAL);
        }
 
                senderr(EINVAL);
        }
 

-       if (dst->sa_family == AF_INET && dst->sa_len != sizeof (dst_in)) {
+       if (info.rti_info[RTAX_DST]->sa_family == AF_INET &&
+           info.rti_info[RTAX_DST]->sa_len != sizeof(struct sockaddr_in)) {

                /* At minimum, we need up to sin_addr */
                /* At minimum, we need up to sin_addr */

-               if (dst->sa_len < offsetof(struct sockaddr_in, sin_zero))
+               if (info.rti_info[RTAX_DST]->sa_len <
+                   offsetof(struct sockaddr_in, sin_zero)) {

                        senderr(EINVAL);
                        senderr(EINVAL);

-               bzero(&dst_in, sizeof (dst_in));
-               dst_in.sin_len = sizeof (dst_in);
+               }
+               bzero(&dst_in, sizeof(dst_in));
+               dst_in.sin_len = sizeof(dst_in);

                dst_in.sin_family = AF_INET;
                dst_in.sin_family = AF_INET;

-               dst_in.sin_port = SIN(dst)->sin_port;
-               dst_in.sin_addr = SIN(dst)->sin_addr;
-               dst = (struct sockaddr *)&dst_in;
+               dst_in.sin_port = SIN(info.rti_info[RTAX_DST])->sin_port;
+               dst_in.sin_addr = SIN(info.rti_info[RTAX_DST])->sin_addr;
+               info.rti_info[RTAX_DST] = (struct sockaddr *)&dst_in;
+               dst_sa_family = info.rti_info[RTAX_DST]->sa_family;
+       } else if (info.rti_info[RTAX_DST]->sa_family == AF_INET6 &&
+           info.rti_info[RTAX_DST]->sa_len < sizeof(struct sockaddr_in6)) {
+               senderr(EINVAL);

        }
 
        }
 

-       if (gate != NULL &&
-           gate->sa_family == AF_INET && gate->sa_len != sizeof (gate_in)) {
-               /* At minimum, we need up to sin_addr */
-               if (gate->sa_len < offsetof(struct sockaddr_in, sin_zero))
+       if (info.rti_info[RTAX_GATEWAY] != NULL) {
+               if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_INET &&
+                   info.rti_info[RTAX_GATEWAY]->sa_len != sizeof(struct sockaddr_in)) {
+                       /* At minimum, we need up to sin_addr */
+                       if (info.rti_info[RTAX_GATEWAY]->sa_len <
+                           offsetof(struct sockaddr_in, sin_zero)) {
+                               senderr(EINVAL);
+                       }
+                       bzero(&gate_in, sizeof(gate_in));
+                       gate_in.sin_len = sizeof(gate_in);
+                       gate_in.sin_family = AF_INET;
+                       gate_in.sin_port = SIN(info.rti_info[RTAX_GATEWAY])->sin_port;
+                       gate_in.sin_addr = SIN(info.rti_info[RTAX_GATEWAY])->sin_addr;
+                       info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&gate_in;
+               } else if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_INET6 &&
+                   info.rti_info[RTAX_GATEWAY]->sa_len < sizeof(struct sockaddr_in6)) {

                        senderr(EINVAL);
                        senderr(EINVAL);

-               bzero(&gate_in, sizeof (gate_in));
-               gate_in.sin_len = sizeof (gate_in);
-               gate_in.sin_family = AF_INET;
-               gate_in.sin_port = SIN(gate)->sin_port;
-               gate_in.sin_addr = SIN(gate)->sin_addr;
-               gate = (struct sockaddr *)&gate_in;
+               }

        }
 
        }
 

-       if (genmask) {
+       if (info.rti_info[RTAX_GENMASK]) {

                struct radix_node *t;
                struct radix_node *t;

-               t = rn_addmask((caddr_t)genmask, 0, 1);
-               if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0)
-                       genmask = (struct sockaddr *)(t->rn_key);
-               else
+               t = rn_addmask((caddr_t)info.rti_info[RTAX_GENMASK], 0, 1);
+               if (t != NULL && Bcmp(info.rti_info[RTAX_GENMASK],
+                   t->rn_key, *(u_char *)info.rti_info[RTAX_GENMASK]) == 0) {
+                       info.rti_info[RTAX_GENMASK] =
+                           (struct sockaddr *)(t->rn_key);
+               } else {

                        senderr(ENOBUFS);
                        senderr(ENOBUFS);

+               }

        }
 
        /*
         * If RTF_IFSCOPE flag is set, then rtm_index specifies the scope.
         */
        if (rtm->rtm_flags & RTF_IFSCOPE) {
        }
 
        /*
         * If RTF_IFSCOPE flag is set, then rtm_index specifies the scope.
         */
        if (rtm->rtm_flags & RTF_IFSCOPE) {

-               /* Scoped routing is for AF_INET only */
-               if (dst->sa_family != AF_INET)
+               if (info.rti_info[RTAX_DST]->sa_family != AF_INET &&
+                   info.rti_info[RTAX_DST]->sa_family != AF_INET6) {

                        senderr(EINVAL);
                        senderr(EINVAL);

+               }

                ifscope = rtm->rtm_index;
        }
                ifscope = rtm->rtm_index;
        }

+       /*
+        * Block changes on INTCOPROC interfaces.
+        */
+       if (ifscope) {
+               unsigned int intcoproc_scope = 0;
+               ifnet_head_lock_shared();
+               TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
+                       if (IFNET_IS_INTCOPROC(ifp)) {
+                               intcoproc_scope = ifp->if_index;
+                               break;
+                       }
+               }
+               ifnet_head_done();
+               if (intcoproc_scope == ifscope && current_proc()->p_pid != 0) {
+                       senderr(EINVAL);
+               }
+       }
+
+       /*
+        * RTF_PROXY can only be set internally from within the kernel.
+        */
+       if (rtm->rtm_flags & RTF_PROXY) {
+               senderr(EINVAL);
+       }

 
 

+       /*
+        * For AF_INET, always zero out the embedded scope ID.  If this is
+        * a scoped request, it must be done explicitly by setting RTF_IFSCOPE
+        * flag and the corresponding rtm_index value.  This is to prevent
+        * false interpretation of the scope ID because it's using the sin_zero
+        * field, which might not be properly cleared by the requestor.
+        */
+       if (info.rti_info[RTAX_DST]->sa_family == AF_INET) {
+               sin_set_ifscope(info.rti_info[RTAX_DST], IFSCOPE_NONE);
+       }
+       if (info.rti_info[RTAX_GATEWAY] != NULL &&
+           info.rti_info[RTAX_GATEWAY]->sa_family == AF_INET) {
+               sin_set_ifscope(info.rti_info[RTAX_GATEWAY], IFSCOPE_NONE);
+       }

        switch (rtm->rtm_type) {
        switch (rtm->rtm_type) {

+       case RTM_ADD:
+               if (info.rti_info[RTAX_GATEWAY] == NULL) {
+                       senderr(EINVAL);
+               }

 
 

-               case RTM_ADD:
-                       if (gate == NULL)
-                               senderr(EINVAL);
+               error = rtrequest_scoped_locked(RTM_ADD,
+                   info.rti_info[RTAX_DST], info.rti_info[RTAX_GATEWAY],
+                   info.rti_info[RTAX_NETMASK], rtm->rtm_flags, &saved_nrt,
+                   ifscope);
+               if (error == 0 && saved_nrt != NULL) {
+                       RT_LOCK(saved_nrt);
+                       /*
+                        * If the route request specified an interface with
+                        * IFA and/or IFP, we set the requested interface on
+                        * the route with rt_setif.  It would be much better
+                        * to do this inside rtrequest, but that would
+                        * require passing the desired interface, in some
+                        * form, to rtrequest.  Since rtrequest is called in
+                        * so many places (roughly 40 in our source), adding
+                        * a parameter is to much for us to swallow; this is
+                        * something for the FreeBSD developers to tackle.
+                        * Instead, we let rtrequest compute whatever
+                        * interface it wants, then come in behind it and
+                        * stick in the interface that we really want.  This
+                        * works reasonably well except when rtrequest can't
+                        * figure out what interface to use (with
+                        * ifa_withroute) and returns ENETUNREACH.  Ideally
+                        * it shouldn't matter if rtrequest can't figure out
+                        * the interface if we're going to explicitly set it
+                        * ourselves anyway.  But practically we can't
+                        * recover here because rtrequest will not do any of
+                        * the work necessary to add the route if it can't
+                        * find an interface.  As long as there is a default
+                        * route that leads to some interface, rtrequest will
+                        * find an interface, so this problem should be
+                        * rarely encountered.
+                        * dwiggins@bbn.com
+                        */
+                       rt_setif(saved_nrt,
+                           info.rti_info[RTAX_IFP], info.rti_info[RTAX_IFA],
+                           info.rti_info[RTAX_GATEWAY], ifscope);
+                       (void)rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, saved_nrt);
+                       saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
+                       saved_nrt->rt_rmx.rmx_locks |=
+                           (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
+                       saved_nrt->rt_genmask = info.rti_info[RTAX_GENMASK];
+                       RT_REMREF_LOCKED(saved_nrt);
+                       RT_UNLOCK(saved_nrt);
+               }
+               break;

 
 

-#ifdef __APPLE__
-/* XXX LD11JUL02 Special case for AOL 5.1.2 connectivity issue to AirPort BS (Radar 2969954)
- * AOL is adding a circular route ("10.0.1.1/32 10.0.1.1") when establishing its ppp tunnel
- * to the AP BaseStation by removing the default gateway and replacing it with their tunnel entry point.
- * There is no apparent reason to add this route as there is a valid 10.0.1.1/24 route to the BS.
- * That circular route was ignored on previous version of MacOS X because of a routing bug
- * corrected with the merge to FreeBSD4.4 (a route generated from an RTF_CLONING route had the RTF_WASCLONED
- * flag set but did not have a reference to the parent route) and that entry was left in the RT. This workaround is
- * made in order to provide binary compatibility with AOL. 
- * If we catch a process adding a circular route with a /32 from the routing socket, we error it out instead of
- * confusing the routing table with a wrong route to the previous default gateway
- */
-{
-#define satosinaddr(sa) (((struct sockaddr_in *)sa)->sin_addr.s_addr)
-       
-                       if (check_routeselfref && (dst && dst->sa_family == AF_INET) && 
-                               (netmask && satosinaddr(netmask) == INADDR_BROADCAST) &&
-                               (gate && satosinaddr(dst) == satosinaddr(gate))) {
-                                       log(LOG_WARNING, "route_output: circular route %ld.%ld.%ld.%ld/32 ignored\n",
-                                               (ntohl(satosinaddr(gate)>>24))&0xff,
-                                               (ntohl(satosinaddr(gate)>>16))&0xff,
-                                               (ntohl(satosinaddr(gate)>>8))&0xff,
-                                               (ntohl(satosinaddr(gate)))&0xff);
-                                               
-                                       senderr(EINVAL);
+       case RTM_DELETE:
+               error = rtrequest_scoped_locked(RTM_DELETE,
+                   info.rti_info[RTAX_DST], info.rti_info[RTAX_GATEWAY],
+                   info.rti_info[RTAX_NETMASK], rtm->rtm_flags, &saved_nrt,
+                   ifscope);
+               if (error == 0) {
+                       rt = saved_nrt;
+                       RT_LOCK(rt);
+                       goto report;
+               }
+               break;
+
+       case RTM_GET:
+       case RTM_CHANGE:
+       case RTM_LOCK:
+               rnh = rt_tables[info.rti_info[RTAX_DST]->sa_family];
+               if (rnh == NULL) {
+                       senderr(EAFNOSUPPORT);
+               }
+               /*
+                * Lookup the best match based on the key-mask pair;
+                * callee adds a reference and checks for root node.
+                */
+               rt = rt_lookup(TRUE, info.rti_info[RTAX_DST],
+                   info.rti_info[RTAX_NETMASK], rnh, ifscope);
+               if (rt == NULL) {
+                       senderr(ESRCH);
+               }
+               RT_LOCK(rt);
+
+               /*
+                * Holding rnh_lock here prevents the possibility of
+                * ifa from changing (e.g. in_ifinit), so it is safe
+                * to access its ifa_addr (down below) without locking.
+                */
+               switch (rtm->rtm_type) {
+               case RTM_GET: {
+                       kauth_cred_t cred;
+                       kauth_cred_t* credp;
+                       struct ifaddr *ifa2;
+report:
+                       cred = kauth_cred_proc_ref(current_proc());
+                       credp = &cred;
+
+                       ifa2 = NULL;
+                       RT_LOCK_ASSERT_HELD(rt);
+                       info.rti_info[RTAX_DST] = rt_key(rt);
+                       dst_sa_family = info.rti_info[RTAX_DST]->sa_family;
+                       info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
+                       info.rti_info[RTAX_NETMASK] = rt_mask(rt);
+                       info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
+                       if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
+                               ifp = rt->rt_ifp;
+                               if (ifp != NULL) {
+                                       ifnet_lock_shared(ifp);
+                                       ifa2 = ifp->if_lladdr;
+                                       info.rti_info[RTAX_IFP] =
+                                           ifa2->ifa_addr;
+                                       IFA_ADDREF(ifa2);
+                                       ifnet_lock_done(ifp);
+                                       info.rti_info[RTAX_IFA] =
+                                           rt->rt_ifa->ifa_addr;
+                                       rtm->rtm_index = ifp->if_index;
+                               } else {
+                                       info.rti_info[RTAX_IFP] = NULL;
+                                       info.rti_info[RTAX_IFA] = NULL;
+                               }
+                       } else if ((ifp = rt->rt_ifp) != NULL) {
+                               rtm->rtm_index = ifp->if_index;

                        }
                        }

-}
-#endif 
-                       error = rtrequest_scoped_locked(RTM_ADD, dst, gate,
-                           netmask, rtm->rtm_flags, &saved_nrt, ifscope);
-                       if (error == 0 && saved_nrt) {
-#ifdef __APPLE__
-                               /* 
-                                * If the route request specified an interface with
-                                * IFA and/or IFP, we set the requested interface on
-                                * the route with rt_setif.  It would be much better
-                                * to do this inside rtrequest, but that would
-                                * require passing the desired interface, in some
-                                * form, to rtrequest.  Since rtrequest is called in
-                                * so many places (roughly 40 in our source), adding
-                                * a parameter is to much for us to swallow; this is
-                                * something for the FreeBSD developers to tackle.
-                                * Instead, we let rtrequest compute whatever
-                                * interface it wants, then come in behind it and
-                                * stick in the interface that we really want.  This
-                                * works reasonably well except when rtrequest can't
-                                * figure out what interface to use (with
-                                * ifa_withroute) and returns ENETUNREACH.  Ideally
-                                * it shouldn't matter if rtrequest can't figure out
-                                * the interface if we're going to explicitly set it
-                                * ourselves anyway.  But practically we can't
-                                * recover here because rtrequest will not do any of
-                                * the work necessary to add the route if it can't
-                                * find an interface.  As long as there is a default
-                                * route that leads to some interface, rtrequest will
-                                * find an interface, so this problem should be
-                                * rarely encountered.
-                                * dwiggins@bbn.com
-                                */
-       
-                               rt_setif(saved_nrt, ifpaddr, ifaaddr, gate,
-                                   ifscope);
-#endif
-                               rt_setmetrics(rtm->rtm_inits,
-                                       &rtm->rtm_rmx, &saved_nrt->rt_rmx);
-                               saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
-                               saved_nrt->rt_rmx.rmx_locks |=
-                                       (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
-                               saved_nrt->rt_genmask = genmask;
-                               rtunref(saved_nrt);
+                       if (ifa2 != NULL) {
+                               IFA_LOCK(ifa2);

                        }
                        }

-                       break;
-
-               case RTM_DELETE:
-                       error = rtrequest_scoped_locked(RTM_DELETE, dst,
-                           gate, netmask, rtm->rtm_flags, &saved_nrt, ifscope);
-                       if (error == 0) {
-                               rt = saved_nrt;
-                               goto report;
+                       len = rt_msg2(rtm->rtm_type, &info, NULL, NULL, credp);
+                       if (ifa2 != NULL) {
+                               IFA_UNLOCK(ifa2);
+                       }
+                       struct rt_msghdr *out_rtm;
+                       R_Malloc(out_rtm, struct rt_msghdr *, len);
+                       if (out_rtm == NULL) {
+                               RT_UNLOCK(rt);
+                               if (ifa2 != NULL) {
+                                       IFA_REMREF(ifa2);
+                               }
+                               senderr(ENOBUFS);
+                       }
+                       Bcopy(rtm, out_rtm, sizeof(struct rt_msghdr));
+                       if (ifa2 != NULL) {
+                               IFA_LOCK(ifa2);
+                       }
+                       (void) rt_msg2(out_rtm->rtm_type, &info, (caddr_t)out_rtm,
+                           NULL, &cred);
+                       if (ifa2 != NULL) {
+                               IFA_UNLOCK(ifa2);

                        }
                        }

+                       R_Free(rtm);
+                       rtm = out_rtm;
+                       rtm->rtm_flags = rt->rt_flags;
+                       rt_getmetrics(rt, &rtm->rtm_rmx);
+                       rtm->rtm_addrs = info.rti_addrs;
+                       if (ifa2 != NULL) {
+                               IFA_REMREF(ifa2);
+                       }
+
+                       kauth_cred_unref(&cred);

                        break;
                        break;

+               }

 
 

-               case RTM_GET:

                case RTM_CHANGE:
                case RTM_CHANGE:

-               case RTM_LOCK:
-                       if ((rnh = rt_tables[dst->sa_family]) == NULL)
-                               senderr(EAFNOSUPPORT);
+                       is_router = (rt->rt_flags & RTF_ROUTER) ? TRUE : FALSE;
+
+                       if (info.rti_info[RTAX_GATEWAY] != NULL &&
+                           (error = rt_setgate(rt, rt_key(rt),
+                           info.rti_info[RTAX_GATEWAY]))) {
+                               int tmp = error;
+                               RT_UNLOCK(rt);
+                               senderr(tmp);
+                       }
+                       /*
+                        * If they tried to change things but didn't specify
+                        * the required gateway, then just use the old one.
+                        * This can happen if the user tries to change the
+                        * flags on the default route without changing the
+                        * default gateway. Changing flags still doesn't work.
+                        */
+                       if ((rt->rt_flags & RTF_GATEWAY) &&
+                           info.rti_info[RTAX_GATEWAY] == NULL) {
+                               info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
+                       }

 
                        /*
 
                        /*

-                        * Lookup the best match based on the key-mask pair;
-                        * callee adds a reference and checks for root node.
+                        * On Darwin, we call rt_setif which contains the
+                        * equivalent to the code found at this very spot
+                        * in BSD.

                         */
                         */

-                       rt = rt_lookup(TRUE, dst, netmask, rnh, ifscope);
-                       if (rt == NULL)
-                               senderr(ESRCH);
-
-                       switch(rtm->rtm_type) {
-
-                               case RTM_GET: {
-                                       struct ifaddr *ifa2;
-                               report:
-                                       dst = rt_key(rt);
-                                       gate = rt->rt_gateway;
-                                       netmask = rt_mask(rt);
-                                       genmask = rt->rt_genmask;
-                                       if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
-                                               ifp = rt->rt_ifp;
-                                               if (ifp) {
-                                                       ifnet_lock_shared(ifp);
-                                                       ifa2 = ifp->if_addrhead.tqh_first;
-                                                       ifpaddr = ifa2->ifa_addr;
-                                                       ifnet_lock_done(ifp);
-                                                       ifaaddr = rt->rt_ifa->ifa_addr;
-                                                       rtm->rtm_index = ifp->if_index;
-                                               } else {
-                                                       ifpaddr = 0;
-                                                       ifaaddr = 0;
-                                               }
-                                       }
-                                       len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0,
-                                               (struct walkarg *)0);
-                                       if (len > rtm->rtm_msglen) {
-                                               struct rt_msghdr *new_rtm;
-                                               R_Malloc(new_rtm, struct rt_msghdr *, len);
-                                               if (new_rtm == 0) {
-                                                       senderr(ENOBUFS);
-                                               }
-                                               Bcopy(rtm, new_rtm, rtm->rtm_msglen);
-                                               R_Free(rtm); rtm = new_rtm;
-                                       }
-                                       (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm,
-                                               (struct walkarg *)0);
-                                       rtm->rtm_flags = rt->rt_flags;
-                                       rtm->rtm_rmx = rt->rt_rmx;
-                                       rtm->rtm_addrs = info.rti_addrs;
-                                       }
-                                       break;
+                       rt_setif(rt,
+                           info.rti_info[RTAX_IFP], info.rti_info[RTAX_IFA],
+                           info.rti_info[RTAX_GATEWAY], ifscope);
+
+                       if ((error = rt_setmetrics(rtm->rtm_inits,
+                           &rtm->rtm_rmx, rt))) {
+                               int tmp = error;
+                               RT_UNLOCK(rt);
+                               senderr(tmp);
+                       }
+                       if (info.rti_info[RTAX_GENMASK]) {
+                               rt->rt_genmask = info.rti_info[RTAX_GENMASK];
+                       }

 
 

-                               case RTM_CHANGE:
-                                       if (gate && (error = rt_setgate(rt, rt_key(rt), gate)))
-                                               senderr(error);
-               
-                                       /*
-                                        * If they tried to change things but didn't specify
-                                        * the required gateway, then just use the old one.
-                                        * This can happen if the user tries to change the
-                                        * flags on the default route without changing the
-                                        * default gateway.  Changing flags still doesn't work.
-                                        */
-                                       if ((rt->rt_flags & RTF_GATEWAY) && !gate)
-                                               gate = rt->rt_gateway;
-               
-#ifdef __APPLE__
-                                       /*
-                                        * On Darwin, we call rt_setif which contains the
-                                        * equivalent to the code found at this very spot
-                                        * in BSD.
-                                        */
-                                       rt_setif(rt, ifpaddr, ifaaddr, gate,
-                                           ifscope);
-#endif
-               
-                                       rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
-                                                       &rt->rt_rmx);
-#ifndef __APPLE__
-                                       /* rt_setif, called above does this for us on darwin */
-                                       if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
-                                                  rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate);
-#endif
-                                       if (genmask)
-                                               rt->rt_genmask = genmask;
-                                       /*
-                                        * Fall into
-                                        */
-                               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;
-                               }
+                       /*
+                        * Enqueue work item to invoke callback for this route entry
+                        * This may not be needed always, but for now issue it anytime
+                        * RTM_CHANGE gets called.
+                        */
+                       route_event_enqueue_nwk_wq_entry(rt, NULL, ROUTE_ENTRY_REFRESH, NULL, TRUE);
+                       /*
+                        * If the route is for a router, walk the tree to send refresh
+                        * event to protocol cloned entries
+                        */
+                       if (is_router) {
+                               struct route_event rt_ev;
+                               route_event_init(&rt_ev, rt, NULL, ROUTE_ENTRY_REFRESH);
+                               RT_UNLOCK(rt);
+                               (void) rnh->rnh_walktree(rnh, route_event_walktree, (void *)&rt_ev);
+                               RT_LOCK(rt);
+                       }
+               /* FALLTHRU */
+               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);
+               }
+               RT_UNLOCK(rt);
+               break;
+       default:
+               senderr(EOPNOTSUPP);

        }
 flush:
        }
 flush:

-       if (rtm) {
-               if (error)
+       if (rtm != NULL) {
+               if (error) {

                        rtm->rtm_errno = error;
                        rtm->rtm_errno = error;

-               else
+               } else {

                        rtm->rtm_flags |= RTF_DONE;
                        rtm->rtm_flags |= RTF_DONE;

+               }

        }
        }

-       if (rt)
+       if (rt != NULL) {
+               RT_LOCK_ASSERT_NOTHELD(rt);

                rtfree_locked(rt);
                rtfree_locked(rt);

-       lck_mtx_unlock(rt_mtx);
-       socket_lock(so, 0);     /* relock the socket now */
-    {
-       struct rawcb *rp = 0;
+       }
+       lck_mtx_unlock(rnh_lock);
+
+       /* relock the socket now */
+       socket_lock(so, 0);

        /*
         * Check to see if we don't want our own messages.
         */
        /*
         * Check to see if we don't want our own messages.
         */

-       if ((so->so_options & SO_USELOOPBACK) == 0) {
+       if (!(so->so_options & SO_USELOOPBACK)) {

                if (route_cb.any_count <= 1) {
                if (route_cb.any_count <= 1) {

-                       if (rtm)
+                       if (rtm != NULL) {

                                R_Free(rtm);
                                R_Free(rtm);

+                       }

                        m_freem(m);
                        m_freem(m);

-                       return (error);
+                       return error;

                }
                /* There is another listener, so construct message */
                rp = sotorawcb(so);
        }
                }
                /* There is another listener, so construct message */
                rp = sotorawcb(so);
        }

-       if (rtm) {
+       if (rtm != NULL) {

                m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
                if (m->m_pkthdr.len < rtm->rtm_msglen) {
                        m_freem(m);
                        m = NULL;
                m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
                if (m->m_pkthdr.len < rtm->rtm_msglen) {
                        m_freem(m);
                        m = NULL;

-               } else if (m->m_pkthdr.len > rtm->rtm_msglen)
+               } else if (m->m_pkthdr.len > rtm->rtm_msglen) {

                        m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
                        m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);

+               }

                R_Free(rtm);
        }
                R_Free(rtm);
        }

-       if (sendonlytoself && m) {
+       if (sendonlytoself && m != NULL) {

                error = 0;
                error = 0;

-               if (sbappendaddr(&so->so_rcv, &route_src, m, (struct mbuf*)0, &error) != 0) {
+               if (sbappendaddr(&so->so_rcv, &route_src, m,
+                   NULL, &error) != 0) {

                        sorwakeup(so);
                }
                        sorwakeup(so);
                }

-               if (error)
+               if (error) {

                        return error;
                        return error;

+               }

        } else {
        } else {

-               if (rp)
+               struct sockproto route_proto = { .sp_family = PF_ROUTE, .sp_protocol = 0 };
+               if (rp != NULL) {

                        rp->rcb_proto.sp_family = 0; /* Avoid us */
                        rp->rcb_proto.sp_family = 0; /* Avoid us */

-               if (dst)
-                       route_proto.sp_protocol = dst->sa_family;
-               if (m) {
+               }
+               if (dst_sa_family != 0) {
+                       route_proto.sp_protocol = dst_sa_family;
+               }
+               if (m != NULL) {

                        socket_unlock(so, 0);
                        raw_input(m, &route_proto, &route_src, &route_dst);
                        socket_lock(so, 0);
                }
                        socket_unlock(so, 0);
                        raw_input(m, &route_proto, &route_src, &route_dst);
                        socket_lock(so, 0);
                }

-               if (rp)
+               if (rp != NULL) {

                        rp->rcb_proto.sp_family = PF_ROUTE;
                }
        }
                        rp->rcb_proto.sp_family = PF_ROUTE;
                }
        }

-       return (error);
+       return error;

 }
 
 }
 

-static void
-rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out)
+void
+rt_setexpire(struct rtentry *rt, uint64_t expiry)
+{
+       /* set both rt_expire and rmx_expire */
+       rt->rt_expire = expiry;
+       if (expiry) {
+               rt->rt_rmx.rmx_expire = expiry + rt->base_calendartime -
+                   rt->base_uptime;
+       } else {
+               rt->rt_rmx.rmx_expire = 0;
+       }
+}
+
+static int
+rt_setmetrics(u_int32_t which, struct rt_metrics *in, struct rtentry *out)

 {
 {

-#define metric(f, e) if (which & (f)) out->e = in->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);
+       if (!(which & RTV_REFRESH_HOST)) {
+               struct timeval caltime;
+               getmicrotime(&caltime);
+#define metric(f, e) if (which & (f)) out->rt_rmx.e = in->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
 #undef metric

+               if (out->rt_rmx.rmx_expire > 0) {
+                       /* account for system time change */
+                       getmicrotime(&caltime);
+                       out->base_calendartime +=
+                           NET_CALCULATE_CLOCKSKEW(caltime,
+                           out->base_calendartime,
+                           net_uptime(), out->base_uptime);
+                       rt_setexpire(out,
+                           out->rt_rmx.rmx_expire -
+                           out->base_calendartime +
+                           out->base_uptime);
+               } else {
+                       rt_setexpire(out, 0);
+               }
+
+               VERIFY(out->rt_expire == 0 || out->rt_rmx.rmx_expire != 0);
+               VERIFY(out->rt_expire != 0 || out->rt_rmx.rmx_expire == 0);
+       } else {
+               /* Only RTV_REFRESH_HOST must be set */
+               if ((which & ~RTV_REFRESH_HOST) ||
+                   (out->rt_flags & RTF_STATIC) ||
+                   !(out->rt_flags & RTF_LLINFO)) {
+                       return EINVAL;
+               }
+
+               if (out->rt_llinfo_refresh == NULL) {
+                       return ENOTSUP;
+               }
+
+               out->rt_llinfo_refresh(out);
+       }
+       return 0;
+}
+
+static void
+rt_getmetrics(struct rtentry *in, struct rt_metrics *out)
+{
+       struct timeval caltime;
+
+       VERIFY(in->rt_expire == 0 || in->rt_rmx.rmx_expire != 0);
+       VERIFY(in->rt_expire != 0 || in->rt_rmx.rmx_expire == 0);
+
+       *out = in->rt_rmx;
+
+       if (in->rt_expire != 0) {
+               /* account for system time change */
+               getmicrotime(&caltime);
+
+               in->base_calendartime +=
+                   NET_CALCULATE_CLOCKSKEW(caltime,
+                   in->base_calendartime, net_uptime(), in->base_uptime);
+
+               out->rmx_expire = in->base_calendartime +
+                   in->rt_expire - in->base_uptime;
+       } else {
+               out->rmx_expire = 0;
+       }

 }
 
 /*
 }
 
 /*

- * Set route's interface given ifpaddr, ifaaddr, and gateway.
+ * Set route's interface given info.rti_info[RTAX_IFP],
+ * info.rti_info[RTAX_IFA], and gateway.

  */
 static void
 rt_setif(struct rtentry *rt, struct sockaddr *Ifpaddr, struct sockaddr *Ifaaddr,
     struct sockaddr *Gate, unsigned int ifscope)
 {
  */
 static void
 rt_setif(struct rtentry *rt, struct sockaddr *Ifpaddr, struct sockaddr *Ifaaddr,
     struct sockaddr *Gate, unsigned int ifscope)
 {

-       struct ifaddr *ifa = 0;
-       struct ifnet  *ifp = 0;
+       struct ifaddr *ifa = NULL;
+       struct ifnet *ifp = NULL;
+       void (*ifa_rtrequest)(int, struct rtentry *, struct sockaddr *);

 
 

-       lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_OWNED);
+       LCK_MTX_ASSERT(rnh_lock, LCK_MTX_ASSERT_OWNED);

 
 

-       /* trigger route cache reevaluation */
-       if (use_routegenid)
-               route_generation++;
+       RT_LOCK_ASSERT_HELD(rt);
+
+       /* Don't update a defunct route */
+       if (rt->rt_flags & RTF_CONDEMNED) {
+               return;
+       }
+
+       /* Add an extra ref for ourselves */
+       RT_ADDREF_LOCKED(rt);
+
+       /* Become a regular mutex, just in case */
+       RT_CONVERT_LOCK(rt);

 
        /*
         * New gateway could require new ifaddr, ifp; flags may also
 
        /*
         * New gateway could require new ifaddr, ifp; flags may also


@@ -704,65 +906,160 @@ rt_setif(struct rtentry *rt, struct sockaddr *Ifpaddr, struct sockaddr *Ifaaddr,
         */
        if (Ifpaddr && (ifa = ifa_ifwithnet_scoped(Ifpaddr, ifscope)) &&
            (ifp = ifa->ifa_ifp) && (Ifaaddr || Gate)) {
         */
        if (Ifpaddr && (ifa = ifa_ifwithnet_scoped(Ifpaddr, ifscope)) &&
            (ifp = ifa->ifa_ifp) && (Ifaaddr || Gate)) {

-               ifafree(ifa);
+               IFA_REMREF(ifa);

                ifa = ifaof_ifpforaddr(Ifaaddr ? Ifaaddr : Gate, ifp);
        } else {
                ifa = ifaof_ifpforaddr(Ifaaddr ? Ifaaddr : Gate, ifp);
        } else {

-               if (ifa) {
-                       ifafree(ifa);
-                       ifa = 0;
+               if (ifa != NULL) {
+                       IFA_REMREF(ifa);
+                       ifa = NULL;

                }
                }

-               if (Ifpaddr && (ifp = if_withname(Ifpaddr)) ) {
+               if (Ifpaddr && (ifp = if_withname(Ifpaddr))) {

                        if (Gate) {
                                ifa = ifaof_ifpforaddr(Gate, ifp);
                        } else {
                                ifnet_lock_shared(ifp);
                                ifa = TAILQ_FIRST(&ifp->if_addrhead);
                        if (Gate) {
                                ifa = ifaof_ifpforaddr(Gate, ifp);
                        } else {
                                ifnet_lock_shared(ifp);
                                ifa = TAILQ_FIRST(&ifp->if_addrhead);

-                               ifaref(ifa);
+                               if (ifa != NULL) {
+                                       IFA_ADDREF(ifa);
+                               }

                                ifnet_lock_done(ifp);
                        }
                } else if (Ifaaddr &&
                    (ifa = ifa_ifwithaddr_scoped(Ifaaddr, ifscope))) {
                        ifp = ifa->ifa_ifp;
                                ifnet_lock_done(ifp);
                        }
                } else if (Ifaaddr &&
                    (ifa = ifa_ifwithaddr_scoped(Ifaaddr, ifscope))) {
                        ifp = ifa->ifa_ifp;

-               } else if (Gate &&
-                   (ifa = ifa_ifwithroute_scoped_locked(rt->rt_flags,
-                   rt_key(rt), Gate, ifscope))) {
-                       ifp = ifa->ifa_ifp;
+               } else if (Gate != NULL) {
+                       /*
+                        * Safe to drop rt_lock and use rt_key, since holding
+                        * rnh_lock here prevents another thread from calling
+                        * rt_setgate() on this route.  We cannot hold the
+                        * lock across ifa_ifwithroute since the lookup done
+                        * by that routine may point to the same route.
+                        */
+                       RT_UNLOCK(rt);
+                       if ((ifa = ifa_ifwithroute_scoped_locked(rt->rt_flags,
+                           rt_key(rt), Gate, ifscope)) != NULL) {
+                               ifp = ifa->ifa_ifp;
+                       }
+                       RT_LOCK(rt);
+                       /* Don't update a defunct route */
+                       if (rt->rt_flags & RTF_CONDEMNED) {
+                               if (ifa != NULL) {
+                                       IFA_REMREF(ifa);
+                               }
+                               /* Release extra ref */
+                               RT_REMREF_LOCKED(rt);
+                               return;
+                       }

                }
        }
                }
        }

-       if (ifa) {
+
+       /* trigger route cache reevaluation */
+       if (rt_key(rt)->sa_family == AF_INET) {
+               routegenid_inet_update();
+       }
+#if INET6
+       else if (rt_key(rt)->sa_family == AF_INET6) {
+               routegenid_inet6_update();
+       }
+#endif /* INET6 */
+
+       if (ifa != NULL) {

                struct ifaddr *oifa = rt->rt_ifa;
                if (oifa != ifa) {
                struct ifaddr *oifa = rt->rt_ifa;
                if (oifa != ifa) {

-                       if (oifa && oifa->ifa_rtrequest)
-                               oifa->ifa_rtrequest(RTM_DELETE, rt, Gate);
+                       if (oifa != NULL) {
+                               IFA_LOCK_SPIN(oifa);
+                               ifa_rtrequest = oifa->ifa_rtrequest;
+                               IFA_UNLOCK(oifa);
+                               if (ifa_rtrequest != NULL) {
+                                       ifa_rtrequest(RTM_DELETE, rt, Gate);
+                               }
+                       }

                        rtsetifa(rt, ifa);
                        rtsetifa(rt, ifa);

+
+                       if (rt->rt_ifp != ifp) {
+                               /*
+                                * Purge any link-layer info caching.
+                                */
+                               if (rt->rt_llinfo_purge != NULL) {
+                                       rt->rt_llinfo_purge(rt);
+                               }
+
+                               /*
+                                * Adjust route ref count for the interfaces.
+                                */
+                               if (rt->rt_if_ref_fn != NULL) {
+                                       rt->rt_if_ref_fn(ifp, 1);
+                                       rt->rt_if_ref_fn(rt->rt_ifp, -1);
+                               }
+                       }

                        rt->rt_ifp = ifp;
                        /*
                         * If this is the (non-scoped) default route, record
                         * the interface index used for the primary ifscope.
                         */
                        rt->rt_ifp = ifp;
                        /*
                         * If this is the (non-scoped) default route, record
                         * the interface index used for the primary ifscope.
                         */

-                       if (rt_inet_default(rt, rt_key(rt)))
-                               set_primary_ifscope(rt->rt_ifp->if_index);
-                       rt->rt_rmx.rmx_mtu = ifp->if_mtu;
-                       if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
-                               rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, Gate);
-               } else {
-                       ifafree(ifa);
-                       goto call_ifareq;
+                       if (rt_primary_default(rt, rt_key(rt))) {
+                               set_primary_ifscope(rt_key(rt)->sa_family,
+                                   rt->rt_ifp->if_index);
+                       }
+                       /*
+                        * If rmx_mtu is not locked, update it
+                        * to the MTU used by the new interface.
+                        */
+                       if (!(rt->rt_rmx.rmx_locks & RTV_MTU)) {
+                               rt->rt_rmx.rmx_mtu = rt->rt_ifp->if_mtu;
+                               if (rt_key(rt)->sa_family == AF_INET &&
+                                   INTF_ADJUST_MTU_FOR_CLAT46(ifp)) {
+                                       rt->rt_rmx.rmx_mtu = IN6_LINKMTU(rt->rt_ifp);
+                                       /* Further adjust the size for CLAT46 expansion */
+                                       rt->rt_rmx.rmx_mtu -= CLAT46_HDR_EXPANSION_OVERHD;
+                               }
+                       }
+
+                       if (rt->rt_ifa != NULL) {
+                               IFA_LOCK_SPIN(rt->rt_ifa);
+                               ifa_rtrequest = rt->rt_ifa->ifa_rtrequest;
+                               IFA_UNLOCK(rt->rt_ifa);
+                               if (ifa_rtrequest != NULL) {
+                                       ifa_rtrequest(RTM_ADD, rt, Gate);
+                               }
+                       }
+                       IFA_REMREF(ifa);
+                       /* Release extra ref */
+                       RT_REMREF_LOCKED(rt);
+                       return;

                }
                }

-               ifafree(ifa);
-               return;
+               IFA_REMREF(ifa);
+               ifa = NULL;

        }
        }

-call_ifareq:
-       /* XXX: to reset gateway to correct value, at RTM_CHANGE */
-       if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
-               rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, Gate);
-}

 
 

+       /* XXX: to reset gateway to correct value, at RTM_CHANGE */
+       if (rt->rt_ifa != NULL) {
+               IFA_LOCK_SPIN(rt->rt_ifa);
+               ifa_rtrequest = rt->rt_ifa->ifa_rtrequest;
+               IFA_UNLOCK(rt->rt_ifa);
+               if (ifa_rtrequest != NULL) {
+                       ifa_rtrequest(RTM_ADD, rt, Gate);
+               }
+       }

 
 

-#define ROUNDUP(a) \
-       ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
-#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+       /*
+        * Workaround for local address routes pointing to the loopback
+        * interface added by configd, until <rdar://problem/12970142>.
+        */
+       if ((rt->rt_ifp->if_flags & IFF_LOOPBACK) &&
+           (rt->rt_flags & RTF_HOST) && rt->rt_ifa->ifa_ifp == rt->rt_ifp) {
+               ifa = ifa_ifwithaddr(rt_key(rt));
+               if (ifa != NULL) {
+                       if (ifa != rt->rt_ifa) {
+                               rtsetifa(rt, ifa);
+                       }
+                       IFA_REMREF(ifa);
+               }
+       }

 
 

+       /* Release extra ref */
+       RT_REMREF_LOCKED(rt);
+}

 
 /*
  * Extract the addresses of the passed sockaddrs.
 
 /*
  * Extract the addresses of the passed sockaddrs.


@@ -777,48 +1074,43 @@ rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
 
        bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
        for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
 
        bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
        for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {

-               if ((rtinfo->rti_addrs & (1 << i)) == 0)
+               if ((rtinfo->rti_addrs & (1 << i)) == 0) {

                        continue;
                        continue;

+               }

                sa = (struct sockaddr *)cp;
                /*
                 * It won't fit.
                 */
                sa = (struct sockaddr *)cp;
                /*
                 * It won't fit.
                 */

-               if ( (cp + sa->sa_len) > cplim ) {
-                       return (EINVAL);
+               if ((cp + sa->sa_len) > cplim) {
+                       return EINVAL;

                }
                }

-

                /*
                 * there are no more.. quit now
                 * If there are more bits, they are in error.
                /*
                 * there are no more.. quit now
                 * If there are more bits, they are in error.

-                * I've seen this. route(1) can evidently generate these. 
+                * I've seen this. route(1) can evidently generate these.

                 * This causes kernel to core dump.
                 * for compatibility, If we see this, point to a safe address.
                 */
                if (sa->sa_len == 0) {
                        rtinfo->rti_info[i] = &sa_zero;
                 * This causes kernel to core dump.
                 * for compatibility, If we see this, point to a safe address.
                 */
                if (sa->sa_len == 0) {
                        rtinfo->rti_info[i] = &sa_zero;

-                       return (0); /* should be EINVAL but for compat */
+                       return 0; /* should be EINVAL but for compat */

                }
                }

-

                /* accept it */
                rtinfo->rti_info[i] = sa;
                /* accept it */
                rtinfo->rti_info[i] = sa;

-               ADVANCE(cp, sa);
+               ADVANCE32(cp, sa);

        }
        }

-       return (0);
+       return 0;

 }
 
 static struct mbuf *
 }
 
 static struct mbuf *

-rt_msg1(
-       int type,
-       struct rt_addrinfo *rtinfo)
+rt_msg1(int type, struct rt_addrinfo *rtinfo)

 {
        struct rt_msghdr *rtm;
        struct mbuf *m;
        int i;
 {
        struct rt_msghdr *rtm;
        struct mbuf *m;
        int i;

-       struct sockaddr *sa;
-       int len, dlen;
+       int len, dlen, off;

 
        switch (type) {
 
        switch (type) {

-

        case RTM_DELADDR:
        case RTM_NEWADDR:
                len = sizeof(struct ifa_msghdr);
        case RTM_DELADDR:
        case RTM_NEWADDR:
                len = sizeof(struct ifa_msghdr);


@@ -836,51 +1128,78 @@ rt_msg1(
        default:
                len = sizeof(struct rt_msghdr);
        }
        default:
                len = sizeof(struct rt_msghdr);
        }

-       if (len > MCLBYTES)
-               panic("rt_msg1");

        m = m_gethdr(M_DONTWAIT, MT_DATA);
        if (m && len > MHLEN) {
                MCLGET(m, M_DONTWAIT);
        m = m_gethdr(M_DONTWAIT, MT_DATA);
        if (m && len > MHLEN) {
                MCLGET(m, M_DONTWAIT);

-               if ((m->m_flags & M_EXT) == 0) {
+               if (!(m->m_flags & M_EXT)) {

                        m_free(m);
                        m = NULL;
                }
        }
                        m_free(m);
                        m = NULL;
                }
        }

-       if (m == 0)
-               return (m);
+       if (m == NULL) {
+               return NULL;
+       }

        m->m_pkthdr.len = m->m_len = len;
        m->m_pkthdr.len = m->m_len = len;

-       m->m_pkthdr.rcvif = 0;
+       m->m_pkthdr.rcvif = NULL;

        rtm = mtod(m, struct rt_msghdr *);
        bzero((caddr_t)rtm, len);
        rtm = mtod(m, struct rt_msghdr *);
        bzero((caddr_t)rtm, len);

+       off = len;

        for (i = 0; i < RTAX_MAX; i++) {
        for (i = 0; i < RTAX_MAX; i++) {

-               if ((sa = rtinfo->rti_info[i]) == NULL)
+               struct sockaddr *sa, *hint;
+               uint8_t ssbuf[SOCK_MAXADDRLEN + 1];
+
+               /*
+                * Make sure to accomodate the largest possible size of sa_len.
+                */
+               _CASSERT(sizeof(ssbuf) == (SOCK_MAXADDRLEN + 1));
+
+               if ((sa = rtinfo->rti_info[i]) == NULL) {

                        continue;
                        continue;

+               }
+
+               switch (i) {
+               case RTAX_DST:
+               case RTAX_NETMASK:
+                       if ((hint = rtinfo->rti_info[RTAX_DST]) == NULL) {
+                               hint = rtinfo->rti_info[RTAX_IFA];
+                       }
+
+                       /* Scrub away any trace of embedded interface scope */
+                       sa = rtm_scrub(type, i, hint, sa, &ssbuf,
+                           sizeof(ssbuf), NULL);
+                       break;
+
+               default:
+                       break;
+               }
+

                rtinfo->rti_addrs |= (1 << i);
                rtinfo->rti_addrs |= (1 << i);

-               dlen = ROUNDUP(sa->sa_len);
-               m_copyback(m, len, dlen, (caddr_t)sa);
-               len += dlen;
+               dlen = sa->sa_len;
+               m_copyback(m, off, dlen, (caddr_t)sa);
+               len = off + dlen;
+               off += ROUNDUP32(dlen);

        }
        if (m->m_pkthdr.len != len) {
                m_freem(m);
        }
        if (m->m_pkthdr.len != len) {
                m_freem(m);

-               return (NULL);
+               return NULL;

        }
        rtm->rtm_msglen = len;
        rtm->rtm_version = RTM_VERSION;
        rtm->rtm_type = type;
        }
        rtm->rtm_msglen = len;
        rtm->rtm_version = RTM_VERSION;
        rtm->rtm_type = type;

-       return (m);
+       return m;

 }
 
 static int
 }
 
 static int

-rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w)
+rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w,
+    kauth_cred_t* credp)

 {
        int i;
 {
        int i;

-       int len, dlen, second_time = 0;
+       int len, dlen, rlen, second_time = 0;

        caddr_t cp0;
 
        rtinfo->rti_addrs = 0;
 again:
        switch (type) {
        caddr_t cp0;
 
        rtinfo->rti_addrs = 0;
 again:
        switch (type) {

-

        case RTM_DELADDR:
        case RTM_NEWADDR:
                len = sizeof(struct ifa_msghdr);
        case RTM_DELADDR:
        case RTM_NEWADDR:
                len = sizeof(struct ifa_msghdr);


@@ -903,6 +1222,10 @@ again:
                len = sizeof(struct ifma_msghdr2);
                break;
 
                len = sizeof(struct ifma_msghdr2);
                break;
 

+       case RTM_GET_EXT:
+               len = sizeof(struct rt_msghdr_ext);
+               break;
+

        case RTM_GET2:
                len = sizeof(struct rt_msghdr2);
                break;
        case RTM_GET2:
                len = sizeof(struct rt_msghdr2);
                break;


@@ -911,34 +1234,69 @@ again:
                len = sizeof(struct rt_msghdr);
        }
        cp0 = cp;
                len = sizeof(struct rt_msghdr);
        }
        cp0 = cp;

-       if (cp0)
+       if (cp0) {

                cp += len;
                cp += len;

+       }

        for (i = 0; i < RTAX_MAX; i++) {
        for (i = 0; i < RTAX_MAX; i++) {

-               struct sockaddr *sa;
+               struct sockaddr *sa, *hint;
+               uint8_t ssbuf[SOCK_MAXADDRLEN + 1];

 
 

-               if ((sa = rtinfo->rti_info[i]) == 0)
+               /*
+                * Make sure to accomodate the largest possible size of sa_len.
+                */
+               _CASSERT(sizeof(ssbuf) == (SOCK_MAXADDRLEN + 1));
+
+               if ((sa = rtinfo->rti_info[i]) == NULL) {

                        continue;
                        continue;

+               }
+
+               switch (i) {
+               case RTAX_DST:
+               case RTAX_NETMASK:
+                       if ((hint = rtinfo->rti_info[RTAX_DST]) == NULL) {
+                               hint = rtinfo->rti_info[RTAX_IFA];
+                       }
+
+                       /* Scrub away any trace of embedded interface scope */
+                       sa = rtm_scrub(type, i, hint, sa, &ssbuf,
+                           sizeof(ssbuf), NULL);
+                       break;
+               case RTAX_GATEWAY:
+               case RTAX_IFP:
+                       sa = rtm_scrub(type, i, NULL, sa, &ssbuf,
+                           sizeof(ssbuf), credp);
+                       break;
+
+               default:
+                       break;
+               }
+

                rtinfo->rti_addrs |= (1 << i);
                rtinfo->rti_addrs |= (1 << i);

-               dlen = ROUNDUP(sa->sa_len);
+               dlen = sa->sa_len;
+               rlen = ROUNDUP32(dlen);

                if (cp) {
                if (cp) {

-                       bcopy((caddr_t)sa, cp, (unsigned)dlen);
-                       cp += dlen;
+                       bcopy((caddr_t)sa, cp, (size_t)dlen);
+                       if (dlen != rlen) {
+                               bzero(cp + dlen, rlen - dlen);
+                       }
+                       cp += rlen;

                }
                }

-               len += dlen;
+               len += rlen;

        }
        }

-       if (cp == 0 && w != NULL && !second_time) {
+       if (cp == NULL && w != NULL && !second_time) {

                struct walkarg *rw = w;
 
                struct walkarg *rw = w;
 

-               if (rw->w_req) {
+               if (rw->w_req != NULL) {

                        if (rw->w_tmemsize < len) {
                        if (rw->w_tmemsize < len) {

-                               if (rw->w_tmem)
+                               if (rw->w_tmem != NULL) {

                                        FREE(rw->w_tmem, M_RTABLE);
                                        FREE(rw->w_tmem, M_RTABLE);

-                               rw->w_tmem = (caddr_t)
-                                       _MALLOC(len, M_RTABLE, M_WAITOK); /*###LD0412 was NOWAIT */
-                               if (rw->w_tmem)
+                               }
+                               rw->w_tmem = _MALLOC(len, M_RTABLE, M_ZERO | M_WAITOK);
+                               if (rw->w_tmem != NULL) {

                                        rw->w_tmemsize = len;
                                        rw->w_tmemsize = len;

+                               }

                        }
                        }

-                       if (rw->w_tmem) {
+                       if (rw->w_tmem != NULL) {

                                cp = rw->w_tmem;
                                second_time = 1;
                                goto again;
                                cp = rw->w_tmem;
                                second_time = 1;
                                goto again;


@@ -946,13 +1304,13 @@ again:
                }
        }
        if (cp) {
                }
        }
        if (cp) {

-               struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
+               struct rt_msghdr *rtm = (struct rt_msghdr *)(void *)cp0;

 
                rtm->rtm_version = RTM_VERSION;
                rtm->rtm_type = type;
                rtm->rtm_msglen = len;
        }
 
                rtm->rtm_version = RTM_VERSION;
                rtm->rtm_type = type;
                rtm->rtm_msglen = len;
        }

-       return (len);
+       return len;

 }
 
 /*
 }
 
 /*


@@ -967,19 +1325,20 @@ rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
        struct rt_msghdr *rtm;
        struct mbuf *m;
        struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
        struct rt_msghdr *rtm;
        struct mbuf *m;
        struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];

+       struct sockproto route_proto = { .sp_family = PF_ROUTE, .sp_protocol = 0 };

 
 

-       lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_OWNED);
-
-       if (route_cb.any_count == 0)
+       if (route_cb.any_count == 0) {

                return;
                return;

+       }

        m = rt_msg1(type, rtinfo);
        m = rt_msg1(type, rtinfo);

-       if (m == 0)
+       if (m == NULL) {

                return;
                return;

+       }

        rtm = mtod(m, struct rt_msghdr *);
        rtm->rtm_flags = RTF_DONE | flags;
        rtm->rtm_errno = error;
        rtm->rtm_addrs = rtinfo->rti_addrs;
        rtm = mtod(m, struct rt_msghdr *);
        rtm->rtm_flags = RTF_DONE | flags;
        rtm->rtm_errno = error;
        rtm->rtm_addrs = rtinfo->rti_addrs;

-       route_proto.sp_protocol = sa ? sa->sa_family : 0;
+       route_proto.sp_family = sa ? sa->sa_family : 0;

        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 
        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 


@@ -988,25 +1347,26 @@ rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
  * socket indicating that the status of a network interface has changed.
  */
 void
  * socket indicating that the status of a network interface has changed.
  */
 void

-rt_ifmsg(
-       struct ifnet *ifp)
+rt_ifmsg(struct ifnet *ifp)

 {
        struct if_msghdr *ifm;
        struct mbuf *m;
        struct rt_addrinfo info;
 {
        struct if_msghdr *ifm;
        struct mbuf *m;
        struct rt_addrinfo info;

+       struct  sockproto route_proto = { .sp_family = PF_ROUTE, .sp_protocol = 0 };

 
 

-       if (route_cb.any_count == 0)
+       if (route_cb.any_count == 0) {

                return;
                return;

+       }

        bzero((caddr_t)&info, sizeof(info));
        m = rt_msg1(RTM_IFINFO, &info);
        bzero((caddr_t)&info, sizeof(info));
        m = rt_msg1(RTM_IFINFO, &info);

-       if (m == 0)
+       if (m == NULL) {

                return;
                return;

+       }

        ifm = mtod(m, struct if_msghdr *);
        ifm->ifm_index = ifp->if_index;
        ifm->ifm_flags = (u_short)ifp->if_flags;
        if_data_internal_to_if_data(ifp, &ifp->if_data, &ifm->ifm_data);
        ifm->ifm_addrs = 0;
        ifm = mtod(m, struct if_msghdr *);
        ifm->ifm_index = ifp->if_index;
        ifm->ifm_flags = (u_short)ifp->if_flags;
        if_data_internal_to_if_data(ifp, &ifp->if_data, &ifm->ifm_data);
        ifm->ifm_addrs = 0;

-       route_proto.sp_protocol = 0;

        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 
        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 


@@ -1019,7 +1379,7 @@ rt_ifmsg(
  * copies of it.
  *
  * Since this is coming from the interface, it is expected that the
  * copies of it.
  *
  * Since this is coming from the interface, it is expected that the

- * interface will be locked.
+ * interface will be locked.  Caller must hold rnh_lock and rt_lock.

  */
 void
 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
  */
 void
 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)


@@ -1029,9 +1389,17 @@ rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
        int pass;
        struct mbuf *m = 0;
        struct ifnet *ifp = ifa->ifa_ifp;
        int pass;
        struct mbuf *m = 0;
        struct ifnet *ifp = ifa->ifa_ifp;

+       struct sockproto route_proto = { .sp_family = PF_ROUTE, .sp_protocol = 0 };

 
 

-       if (route_cb.any_count == 0)
+       LCK_MTX_ASSERT(rnh_lock, LCK_MTX_ASSERT_OWNED);
+       RT_LOCK_ASSERT_HELD(rt);
+
+       if (route_cb.any_count == 0) {

                return;
                return;

+       }
+
+       /* Become a regular mutex, just in case */
+       RT_CONVERT_LOCK(rt);

        for (pass = 1; pass < 3; pass++) {
                bzero((caddr_t)&info, sizeof(info));
                if ((cmd == RTM_ADD && pass == 1) ||
        for (pass = 1; pass < 3; pass++) {
                bzero((caddr_t)&info, sizeof(info));
                if ((cmd == RTM_ADD && pass == 1) ||


@@ -1039,29 +1407,47 @@ rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
                        struct ifa_msghdr *ifam;
                        int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
 
                        struct ifa_msghdr *ifam;
                        int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
 

-                       ifaaddr = sa = ifa->ifa_addr;
-                       ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
-                       netmask = ifa->ifa_netmask;
-                       brdaddr = ifa->ifa_dstaddr;
-                       if ((m = rt_msg1(ncmd, &info)) == NULL)
+                       /* Lock ifp for if_lladdr */
+                       ifnet_lock_shared(ifp);
+                       IFA_LOCK(ifa);
+                       info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
+                       /*
+                        * Holding ifnet lock here prevents the link address
+                        * from changing contents, so no need to hold its
+                        * lock.  The link address is always present; it's
+                        * never freed.
+                        */
+                       info.rti_info[RTAX_IFP] = ifp->if_lladdr->ifa_addr;
+                       info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
+                       info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
+                       if ((m = rt_msg1(ncmd, &info)) == NULL) {
+                               IFA_UNLOCK(ifa);
+                               ifnet_lock_done(ifp);

                                continue;
                                continue;

+                       }
+                       IFA_UNLOCK(ifa);
+                       ifnet_lock_done(ifp);

                        ifam = mtod(m, struct ifa_msghdr *);
                        ifam->ifam_index = ifp->if_index;
                        ifam = mtod(m, struct ifa_msghdr *);
                        ifam->ifam_index = ifp->if_index;

+                       IFA_LOCK_SPIN(ifa);

                        ifam->ifam_metric = ifa->ifa_metric;
                        ifam->ifam_flags = ifa->ifa_flags;
                        ifam->ifam_metric = ifa->ifa_metric;
                        ifam->ifam_flags = ifa->ifa_flags;

+                       IFA_UNLOCK(ifa);

                        ifam->ifam_addrs = info.rti_addrs;
                }
                if ((cmd == RTM_ADD && pass == 2) ||
                    (cmd == RTM_DELETE && pass == 1)) {
                        struct rt_msghdr *rtm;
 
                        ifam->ifam_addrs = info.rti_addrs;
                }
                if ((cmd == RTM_ADD && pass == 2) ||
                    (cmd == RTM_DELETE && pass == 1)) {
                        struct rt_msghdr *rtm;
 

-                       if (rt == 0)
+                       if (rt == NULL) {

                                continue;
                                continue;

-                       netmask = rt_mask(rt);
-                       dst = sa = rt_key(rt);
-                       gate = rt->rt_gateway;
-                       if ((m = rt_msg1(cmd, &info)) == NULL)
+                       }
+                       info.rti_info[RTAX_NETMASK] = rt_mask(rt);
+                       info.rti_info[RTAX_DST] = sa = rt_key(rt);
+                       info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
+                       if ((m = rt_msg1(cmd, &info)) == NULL) {

                                continue;
                                continue;

+                       }

                        rtm = mtod(m, struct rt_msghdr *);
                        rtm->rtm_index = ifp->if_index;
                        rtm->rtm_flags |= rt->rt_flags;
                        rtm = mtod(m, struct rt_msghdr *);
                        rtm->rtm_index = ifp->if_index;
                        rtm->rtm_flags |= rt->rt_flags;


@@ -1085,247 +1471,655 @@ rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
        struct mbuf *m = 0;
        struct ifnet *ifp = ifma->ifma_ifp;
        struct ifma_msghdr *ifmam;
        struct mbuf *m = 0;
        struct ifnet *ifp = ifma->ifma_ifp;
        struct ifma_msghdr *ifmam;

+       struct sockproto route_proto = { .sp_family = PF_ROUTE, .sp_protocol = 0 };

 
 

-       if (route_cb.any_count == 0)
+       if (route_cb.any_count == 0) {

                return;
                return;

+       }

 
 

+       /* Lock ifp for if_lladdr */
+       ifnet_lock_shared(ifp);

        bzero((caddr_t)&info, sizeof(info));
        bzero((caddr_t)&info, sizeof(info));

-       ifaaddr = ifma->ifma_addr;
-       if (ifp && ifp->if_addrhead.tqh_first)
-               ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
-       else
-               ifpaddr = NULL;
+       IFMA_LOCK(ifma);
+       info.rti_info[RTAX_IFA] = ifma->ifma_addr;
+       /* lladdr doesn't need lock */
+       info.rti_info[RTAX_IFP] = ifp->if_lladdr->ifa_addr;
+

        /*
         * If a link-layer address is present, present it as a ``gateway''
         * (similarly to how ARP entries, e.g., are presented).
         */
        /*
         * If a link-layer address is present, present it as a ``gateway''
         * (similarly to how ARP entries, e.g., are presented).
         */

-       gate = ifma->ifma_ll->ifma_addr;
-       if ((m = rt_msg1(cmd, &info)) == NULL)
+       info.rti_info[RTAX_GATEWAY] = (ifma->ifma_ll != NULL) ?
+           ifma->ifma_ll->ifma_addr : NULL;
+       if ((m = rt_msg1(cmd, &info)) == NULL) {
+               IFMA_UNLOCK(ifma);
+               ifnet_lock_done(ifp);

                return;
                return;

+       }

        ifmam = mtod(m, struct ifma_msghdr *);
        ifmam = mtod(m, struct ifma_msghdr *);

-       ifmam->ifmam_index = ifp ? ifp->if_index : 0;
+       ifmam->ifmam_index = ifp->if_index;

        ifmam->ifmam_addrs = info.rti_addrs;
        route_proto.sp_protocol = ifma->ifma_addr->sa_family;
        ifmam->ifmam_addrs = info.rti_addrs;
        route_proto.sp_protocol = ifma->ifma_addr->sa_family;

+       IFMA_UNLOCK(ifma);
+       ifnet_lock_done(ifp);

        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 
        raw_input(m, &route_proto, &route_src, &route_dst);
 }
 

+const char *
+rtm2str(int cmd)
+{
+       const char *c = "RTM_?";
+
+       switch (cmd) {
+       case RTM_ADD:
+               c = "RTM_ADD";
+               break;
+       case RTM_DELETE:
+               c = "RTM_DELETE";
+               break;
+       case RTM_CHANGE:
+               c = "RTM_CHANGE";
+               break;
+       case RTM_GET:
+               c = "RTM_GET";
+               break;
+       case RTM_LOSING:
+               c = "RTM_LOSING";
+               break;
+       case RTM_REDIRECT:
+               c = "RTM_REDIRECT";
+               break;
+       case RTM_MISS:
+               c = "RTM_MISS";
+               break;
+       case RTM_LOCK:
+               c = "RTM_LOCK";
+               break;
+       case RTM_OLDADD:
+               c = "RTM_OLDADD";
+               break;
+       case RTM_OLDDEL:
+               c = "RTM_OLDDEL";
+               break;
+       case RTM_RESOLVE:
+               c = "RTM_RESOLVE";
+               break;
+       case RTM_NEWADDR:
+               c = "RTM_NEWADDR";
+               break;
+       case RTM_DELADDR:
+               c = "RTM_DELADDR";
+               break;
+       case RTM_IFINFO:
+               c = "RTM_IFINFO";
+               break;
+       case RTM_NEWMADDR:
+               c = "RTM_NEWMADDR";
+               break;
+       case RTM_DELMADDR:
+               c = "RTM_DELMADDR";
+               break;
+       case RTM_GET_SILENT:
+               c = "RTM_GET_SILENT";
+               break;
+       case RTM_IFINFO2:
+               c = "RTM_IFINFO2";
+               break;
+       case RTM_NEWMADDR2:
+               c = "RTM_NEWMADDR2";
+               break;
+       case RTM_GET2:
+               c = "RTM_GET2";
+               break;
+       case RTM_GET_EXT:
+               c = "RTM_GET_EXT";
+               break;
+       }
+
+       return c;
+}
+

 /*
  * This is used in dumping the kernel table via sysctl().
  */
 /*
  * This is used in dumping the kernel table via sysctl().
  */

-int
+static int

 sysctl_dumpentry(struct radix_node *rn, void *vw)
 {
        struct walkarg *w = vw;
        struct rtentry *rt = (struct rtentry *)rn;
        int error = 0, size;
        struct rt_addrinfo info;
 sysctl_dumpentry(struct radix_node *rn, void *vw)
 {
        struct walkarg *w = vw;
        struct rtentry *rt = (struct rtentry *)rn;
        int error = 0, size;
        struct rt_addrinfo info;

+       kauth_cred_t cred;
+       kauth_cred_t *credp;
+
+       cred = kauth_cred_proc_ref(current_proc());
+       credp = &cred;
+
+       RT_LOCK(rt);
+       if ((w->w_op == NET_RT_FLAGS || w->w_op == NET_RT_FLAGS_PRIV) &&
+           !(rt->rt_flags & w->w_arg)) {
+               goto done;
+       }
+
+       /*
+        * If the matching route has RTF_LLINFO set, then we can skip scrubbing the MAC
+        * only if the outgoing interface is not loopback and the process has entitlement
+        * for neighbor cache read.
+        */
+       if (w->w_op == NET_RT_FLAGS_PRIV && (rt->rt_flags & RTF_LLINFO)) {
+               if (rt->rt_ifp != lo_ifp &&
+                   (route_op_entitlement_check(NULL, cred, ROUTE_OP_READ, TRUE) == 0)) {
+                       credp = NULL;
+               }
+       }

 
 

-       if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
-               return 0;

        bzero((caddr_t)&info, sizeof(info));
        bzero((caddr_t)&info, sizeof(info));

-       dst = rt_key(rt);
-       gate = rt->rt_gateway;
-       netmask = rt_mask(rt);
-       genmask = rt->rt_genmask;
+       info.rti_info[RTAX_DST] = rt_key(rt);
+       info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
+       info.rti_info[RTAX_NETMASK] = rt_mask(rt);
+       info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
+       if (RT_HAS_IFADDR(rt)) {
+               info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
+       }
+

        if (w->w_op != NET_RT_DUMP2) {
        if (w->w_op != NET_RT_DUMP2) {

-               size = rt_msg2(RTM_GET, &info, 0, w);
-               if (w->w_req && w->w_tmem) {
-                       struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
+               size = rt_msg2(RTM_GET, &info, NULL, w, credp);
+               if (w->w_req != NULL && w->w_tmem != NULL) {
+                       struct rt_msghdr *rtm =
+                           (struct rt_msghdr *)(void *)w->w_tmem;

 
                        rtm->rtm_flags = rt->rt_flags;
                        rtm->rtm_use = rt->rt_use;
 
                        rtm->rtm_flags = rt->rt_flags;
                        rtm->rtm_use = rt->rt_use;

-                       rtm->rtm_rmx = rt->rt_rmx;
+                       rt_getmetrics(rt, &rtm->rtm_rmx);

                        rtm->rtm_index = rt->rt_ifp->if_index;
                        rtm->rtm_pid = 0;
                        rtm->rtm_index = rt->rt_ifp->if_index;
                        rtm->rtm_pid = 0;

-                        rtm->rtm_seq = 0;
-                        rtm->rtm_errno = 0;
+                       rtm->rtm_seq = 0;
+                       rtm->rtm_errno = 0;

                        rtm->rtm_addrs = info.rti_addrs;
                        error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
                        rtm->rtm_addrs = info.rti_addrs;
                        error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);

-                       return (error);

                }
        } else {
                }
        } else {

-                size = rt_msg2(RTM_GET2, &info, 0, w);
-                if (w->w_req && w->w_tmem) {
-                        struct rt_msghdr2 *rtm = (struct rt_msghdr2 *)w->w_tmem;
-
-                        rtm->rtm_flags = rt->rt_flags;
-                        rtm->rtm_use = rt->rt_use;
-                        rtm->rtm_rmx = rt->rt_rmx;
-                        rtm->rtm_index = rt->rt_ifp->if_index;
-                        rtm->rtm_refcnt = rt->rt_refcnt;
-                       if (rt->rt_parent)
+               size = rt_msg2(RTM_GET2, &info, NULL, w, credp);
+               if (w->w_req != NULL && w->w_tmem != NULL) {
+                       struct rt_msghdr2 *rtm =
+                           (struct rt_msghdr2 *)(void *)w->w_tmem;
+
+                       rtm->rtm_flags = rt->rt_flags;
+                       rtm->rtm_use = rt->rt_use;
+                       rt_getmetrics(rt, &rtm->rtm_rmx);
+                       rtm->rtm_index = rt->rt_ifp->if_index;
+                       rtm->rtm_refcnt = rt->rt_refcnt;
+                       if (rt->rt_parent) {

                                rtm->rtm_parentflags = rt->rt_parent->rt_flags;
                                rtm->rtm_parentflags = rt->rt_parent->rt_flags;

-                       else
+                       } else {

                                rtm->rtm_parentflags = 0;
                                rtm->rtm_parentflags = 0;

-                        rtm->rtm_reserved = 0;
-                        rtm->rtm_addrs = info.rti_addrs;
-                        error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
-                        return (error);
+                       }
+                       rtm->rtm_reserved = 0;
+                       rtm->rtm_addrs = info.rti_addrs;
+                       error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
+               }
+       }
+
+done:
+       RT_UNLOCK(rt);
+       kauth_cred_unref(&cred);
+       return error;
+}
+
+/*
+ * This is used for dumping extended information from route entries.
+ */
+static int
+sysctl_dumpentry_ext(struct radix_node *rn, void *vw)
+{
+       struct walkarg *w = vw;
+       struct rtentry *rt = (struct rtentry *)rn;
+       int error = 0, size;
+       struct rt_addrinfo info;
+       kauth_cred_t cred;

 
 

+       cred = kauth_cred_proc_ref(current_proc());
+
+       RT_LOCK(rt);
+       if (w->w_op == NET_RT_DUMPX_FLAGS && !(rt->rt_flags & w->w_arg)) {
+               goto done;
+       }
+       bzero(&info, sizeof(info));
+       info.rti_info[RTAX_DST] = rt_key(rt);
+       info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
+       info.rti_info[RTAX_NETMASK] = rt_mask(rt);
+       info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
+
+       size = rt_msg2(RTM_GET_EXT, &info, NULL, w, &cred);
+       if (w->w_req != NULL && w->w_tmem != NULL) {
+               struct rt_msghdr_ext *ertm =
+                   (struct rt_msghdr_ext *)(void *)w->w_tmem;
+
+               ertm->rtm_flags = rt->rt_flags;
+               ertm->rtm_use = rt->rt_use;
+               rt_getmetrics(rt, &ertm->rtm_rmx);
+               ertm->rtm_index = rt->rt_ifp->if_index;
+               ertm->rtm_pid = 0;
+               ertm->rtm_seq = 0;
+               ertm->rtm_errno = 0;
+               ertm->rtm_addrs = info.rti_addrs;
+               if (rt->rt_llinfo_get_ri == NULL) {
+                       bzero(&ertm->rtm_ri, sizeof(ertm->rtm_ri));
+                       ertm->rtm_ri.ri_rssi = IFNET_RSSI_UNKNOWN;
+                       ertm->rtm_ri.ri_lqm = IFNET_LQM_THRESH_OFF;
+                       ertm->rtm_ri.ri_npm = IFNET_NPM_THRESH_UNKNOWN;
+               } else {
+                       rt->rt_llinfo_get_ri(rt, &ertm->rtm_ri);

                }
                }

+               error = SYSCTL_OUT(w->w_req, (caddr_t)ertm, size);

        }
        }

-       return (error);
+
+done:
+       RT_UNLOCK(rt);
+       kauth_cred_unref(&cred);
+       return error;

 }
 
 }
 

-int
-sysctl_iflist(
-       int     af,
-       struct  walkarg *w)
+/*
+ * rdar://9307819
+ * To avoid to call copyout() while holding locks and to cause problems
+ * in the paging path, sysctl_iflist() and sysctl_iflist2() contstruct
+ * the list in two passes. In the first pass we compute the total
+ * length of the data we are going to copyout, then we release
+ * all locks to allocate a temporary buffer that gets filled
+ * in the second pass.
+ *
+ * Note that we are verifying the assumption that _MALLOC returns a buffer
+ * that is at least 32 bits aligned and that the messages and addresses are
+ * 32 bits aligned.
+ */
+static int
+sysctl_iflist(int af, struct walkarg *w)

 {
        struct ifnet *ifp;
        struct ifaddr *ifa;
 {
        struct ifnet *ifp;
        struct ifaddr *ifa;

-       struct  rt_addrinfo info;
-       int     len, error = 0;
+       struct  rt_addrinfo info;
+       int     len = 0, error = 0;
+       int     pass = 0;
+       int     total_len = 0, current_len = 0;
+       char    *total_buffer = NULL, *cp = NULL;
+       kauth_cred_t cred;
+
+       cred = kauth_cred_proc_ref(current_proc());

 
        bzero((caddr_t)&info, sizeof(info));
 
        bzero((caddr_t)&info, sizeof(info));

-       ifnet_head_lock_shared();
-       TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
-               if (error)
-                       break;
-               if (w->w_arg && w->w_arg != ifp->if_index)
-                       continue;
-               ifnet_lock_shared(ifp);
-               ifa = ifp->if_addrhead.tqh_first;
-               ifpaddr = ifa->ifa_addr;
-               len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w);
-               ifpaddr = 0;
-               if (w->w_req && w->w_tmem) {
-                       struct if_msghdr *ifm;
-
-                       ifm = (struct if_msghdr *)w->w_tmem;
-                       ifm->ifm_index = ifp->if_index;
-                       ifm->ifm_flags = (u_short)ifp->if_flags;
-                       if_data_internal_to_if_data(ifp, &ifp->if_data, &ifm->ifm_data);
-                       ifm->ifm_addrs = info.rti_addrs;
-                       error = SYSCTL_OUT(w->w_req,(caddr_t)ifm, len);
+
+       for (pass = 0; pass < 2; pass++) {
+               ifnet_head_lock_shared();
+
+               TAILQ_FOREACH(ifp, &ifnet_head, if_link) {

                        if (error) {
                        if (error) {

-                               ifnet_lock_done(ifp);

                                break;
                        }
                                break;
                        }

-               }
-               while ((ifa = ifa->ifa_link.tqe_next) != 0) {
-                       if (af && af != ifa->ifa_addr->sa_family)
+                       if (w->w_arg && w->w_arg != ifp->if_index) {

                                continue;
                                continue;

-                       ifaaddr = ifa->ifa_addr;
-                       netmask = ifa->ifa_netmask;
-                       brdaddr = ifa->ifa_dstaddr;
-                       len = rt_msg2(RTM_NEWADDR, &info, 0, w);
-                       if (w->w_req && w->w_tmem) {
-                               struct ifa_msghdr *ifam;
-
-                               ifam = (struct ifa_msghdr *)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 = SYSCTL_OUT(w->w_req, w->w_tmem, len);
-                               if (error)
+                       }
+                       ifnet_lock_shared(ifp);
+                       /*
+                        * Holding ifnet lock here prevents the link address
+                        * from changing contents, so no need to hold the ifa
+                        * lock.  The link address is always present; it's
+                        * never freed.
+                        */
+                       ifa = ifp->if_lladdr;
+                       info.rti_info[RTAX_IFP] = ifa->ifa_addr;
+                       len = rt_msg2(RTM_IFINFO, &info, NULL, NULL, &cred);
+                       if (pass == 0) {
+                               total_len += len;
+                       } else {
+                               struct if_msghdr *ifm;
+
+                               if (current_len + len > total_len) {
+                                       ifnet_lock_done(ifp);
+                                       error = ENOBUFS;

                                        break;
                                        break;

+                               }
+                               info.rti_info[RTAX_IFP] = ifa->ifa_addr;
+                               len = rt_msg2(RTM_IFINFO, &info,
+                                   (caddr_t)cp, NULL, &cred);
+                               info.rti_info[RTAX_IFP] = NULL;
+
+                               ifm = (struct if_msghdr *)(void *)cp;
+                               ifm->ifm_index = ifp->if_index;
+                               ifm->ifm_flags = (u_short)ifp->if_flags;
+                               if_data_internal_to_if_data(ifp, &ifp->if_data,
+                                   &ifm->ifm_data);
+                               ifm->ifm_addrs = info.rti_addrs;
+                               /*
+                                * <rdar://problem/32940901>
+                                * Round bytes only for non-platform
+                                */
+                               if (!csproc_get_platform_binary(w->w_req->p)) {
+                                       ALIGN_BYTES(ifm->ifm_data.ifi_ibytes);
+                                       ALIGN_BYTES(ifm->ifm_data.ifi_obytes);
+                               }
+
+                               cp += len;
+                               VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
+                               current_len += len;
+                       }
+                       while ((ifa = ifa->ifa_link.tqe_next) != NULL) {
+                               IFA_LOCK(ifa);
+                               if (af && af != ifa->ifa_addr->sa_family) {
+                                       IFA_UNLOCK(ifa);
+                                       continue;
+                               }
+                               if (ifa->ifa_addr->sa_family == AF_INET6 &&
+                                   (((struct in6_ifaddr *)ifa)->ia6_flags &
+                                   IN6_IFF_CLAT46) != 0) {
+                                       IFA_UNLOCK(ifa);
+                                       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;
+                               len = rt_msg2(RTM_NEWADDR, &info, NULL, NULL,
+                                   &cred);
+                               if (pass == 0) {
+                                       total_len += len;
+                               } else {
+                                       struct ifa_msghdr *ifam;
+
+                                       if (current_len + len > total_len) {
+                                               IFA_UNLOCK(ifa);
+                                               error = ENOBUFS;
+                                               break;
+                                       }
+                                       len = rt_msg2(RTM_NEWADDR, &info,
+                                           (caddr_t)cp, NULL, &cred);
+
+                                       ifam = (struct ifa_msghdr *)(void *)cp;
+                                       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;
+
+                                       cp += len;
+                                       VERIFY(IS_P2ALIGNED(cp,
+                                           sizeof(u_int32_t)));
+                                       current_len += len;
+                               }
+                               IFA_UNLOCK(ifa);
+                       }
+                       ifnet_lock_done(ifp);
+                       info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
+                           info.rti_info[RTAX_BRD] = NULL;
+               }
+
+               ifnet_head_done();
+
+               if (error != 0) {
+                       if (error == ENOBUFS) {
+                               printf("%s: current_len (%d) + len (%d) > "
+                                   "total_len (%d)\n", __func__, current_len,
+                                   len, total_len);
+                       }
+                       break;
+               }
+
+               if (pass == 0) {
+                       /* Better to return zero length buffer than ENOBUFS */
+                       if (total_len == 0) {
+                               total_len = 1;
+                       }
+                       total_len += total_len >> 3;
+                       total_buffer = _MALLOC(total_len, M_RTABLE,
+                           M_ZERO | M_WAITOK);
+                       if (total_buffer == NULL) {
+                               printf("%s: _MALLOC(%d) failed\n", __func__,
+                                   total_len);
+                               error = ENOBUFS;
+                               break;
+                       }
+                       cp = total_buffer;
+                       VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
+               } else {
+                       error = SYSCTL_OUT(w->w_req, total_buffer, current_len);
+                       if (error) {
+                               break;

                        }
                }
                        }
                }

-               ifnet_lock_done(ifp);
-               ifaaddr = netmask = brdaddr = 0;

        }
        }

-       ifnet_head_done();
+
+       if (total_buffer != NULL) {
+               _FREE(total_buffer, M_RTABLE);
+       }
+
+       kauth_cred_unref(&cred);

        return error;
 }
 
        return error;
 }
 

-int
-sysctl_iflist2(
-       int     af,
-       struct  walkarg *w)
+static int
+sysctl_iflist2(int af, struct walkarg *w)

 {
        struct ifnet *ifp;
        struct ifaddr *ifa;
 {
        struct ifnet *ifp;
        struct ifaddr *ifa;

-       struct  rt_addrinfo info;
-       int     len, error = 0;
-       
+       struct  rt_addrinfo info;
+       int     len = 0, error = 0;
+       int     pass = 0;
+       int     total_len = 0, current_len = 0;
+       char    *total_buffer = NULL, *cp = NULL;
+       kauth_cred_t cred;
+
+       cred = kauth_cred_proc_ref(current_proc());
+

        bzero((caddr_t)&info, sizeof(info));
        bzero((caddr_t)&info, sizeof(info));

-       ifnet_head_lock_shared();
-       TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
-               if (error)
-                       break;
-               if (w->w_arg && w->w_arg != ifp->if_index)
-                       continue;
-               ifnet_lock_shared(ifp);
-               ifa = ifp->if_addrhead.tqh_first;
-               ifpaddr = ifa->ifa_addr;
-               len = rt_msg2(RTM_IFINFO2, &info, (caddr_t)0, w);
-               ifpaddr = 0;
-               if (w->w_req && w->w_tmem) {
-                       struct if_msghdr2 *ifm;
-
-                       ifm = (struct if_msghdr2 *)w->w_tmem;
-                       ifm->ifm_addrs = info.rti_addrs;
-                       ifm->ifm_flags = (u_short)ifp->if_flags;
-                       ifm->ifm_index = ifp->if_index;
-                       ifm->ifm_snd_len = ifp->if_snd.ifq_len;
-                       ifm->ifm_snd_maxlen = ifp->if_snd.ifq_maxlen;
-                       ifm->ifm_snd_drops = ifp->if_snd.ifq_drops;
-                       ifm->ifm_timer = ifp->if_timer;
-                       if_data_internal_to_if_data64(ifp, &ifp->if_data, &ifm->ifm_data);
-                       error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
+
+       for (pass = 0; pass < 2; pass++) {
+               struct ifmultiaddr *ifma;
+
+               ifnet_head_lock_shared();
+
+               TAILQ_FOREACH(ifp, &ifnet_head, if_link) {

                        if (error) {
                        if (error) {

-                               ifnet_lock_done(ifp);

                                break;
                        }
                                break;
                        }

-               }
-               while ((ifa = ifa->ifa_link.tqe_next) != 0) {
-                       if (af && af != ifa->ifa_addr->sa_family)
+                       if (w->w_arg && w->w_arg != ifp->if_index) {

                                continue;
                                continue;

-                       ifaaddr = ifa->ifa_addr;
-                       netmask = ifa->ifa_netmask;
-                       brdaddr = ifa->ifa_dstaddr;
-                       len = rt_msg2(RTM_NEWADDR, &info, 0, w);
-                       if (w->w_req && w->w_tmem) {
-                               struct ifa_msghdr *ifam;
-
-                               ifam = (struct ifa_msghdr *)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 = SYSCTL_OUT(w->w_req, w->w_tmem, len);
-                               if (error)
+                       }
+                       ifnet_lock_shared(ifp);
+                       /*
+                        * Holding ifnet lock here prevents the link address
+                        * from changing contents, so no need to hold the ifa
+                        * lock.  The link address is always present; it's
+                        * never freed.
+                        */
+                       ifa = ifp->if_lladdr;
+                       info.rti_info[RTAX_IFP] = ifa->ifa_addr;
+                       len = rt_msg2(RTM_IFINFO2, &info, NULL, NULL, &cred);
+                       if (pass == 0) {
+                               total_len += len;
+                       } else {
+                               struct if_msghdr2 *ifm;
+
+                               if (current_len + len > total_len) {
+                                       ifnet_lock_done(ifp);
+                                       error = ENOBUFS;

                                        break;
                                        break;

+                               }
+                               info.rti_info[RTAX_IFP] = ifa->ifa_addr;
+                               len = rt_msg2(RTM_IFINFO2, &info,
+                                   (caddr_t)cp, NULL, &cred);
+                               info.rti_info[RTAX_IFP] = NULL;
+
+                               ifm = (struct if_msghdr2 *)(void *)cp;
+                               ifm->ifm_addrs = info.rti_addrs;
+                               ifm->ifm_flags = (u_short)ifp->if_flags;
+                               ifm->ifm_index = ifp->if_index;
+                               ifm->ifm_snd_len = IFCQ_LEN(&ifp->if_snd);
+                               ifm->ifm_snd_maxlen = IFCQ_MAXLEN(&ifp->if_snd);
+                               ifm->ifm_snd_drops =
+                                   ifp->if_snd.ifcq_dropcnt.packets;
+                               ifm->ifm_timer = ifp->if_timer;
+                               if_data_internal_to_if_data64(ifp,
+                                   &ifp->if_data, &ifm->ifm_data);
+                               /*
+                                * <rdar://problem/32940901>
+                                * Round bytes only for non-platform
+                                */
+                               if (!csproc_get_platform_binary(w->w_req->p)) {
+                                       ALIGN_BYTES(ifm->ifm_data.ifi_ibytes);
+                                       ALIGN_BYTES(ifm->ifm_data.ifi_obytes);
+                               }
+
+                               cp += len;
+                               VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
+                               current_len += len;

                        }
                        }

-               }
-               if (error) {
-                       ifnet_lock_done(ifp);
-                       break;
-               }
-               {
-                       struct ifmultiaddr *ifma;
-                       
-                       for (ifma = ifp->if_multiaddrs.lh_first; ifma;
-                               ifma = ifma->ifma_link.le_next) {
-                               if (af && af != ifma->ifma_addr->sa_family)
+                       while ((ifa = ifa->ifa_link.tqe_next) != NULL) {
+                               IFA_LOCK(ifa);
+                               if (af && af != ifa->ifa_addr->sa_family) {
+                                       IFA_UNLOCK(ifa);
+                                       continue;
+                               }
+                               if (ifa->ifa_addr->sa_family == AF_INET6 &&
+                                   (((struct in6_ifaddr *)ifa)->ia6_flags &
+                                   IN6_IFF_CLAT46) != 0) {
+                                       IFA_UNLOCK(ifa);

                                        continue;
                                        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;
+                               len = rt_msg2(RTM_NEWADDR, &info, NULL, NULL,
+                                   &cred);
+                               if (pass == 0) {
+                                       total_len += len;
+                               } else {
+                                       struct ifa_msghdr *ifam;
+
+                                       if (current_len + len > total_len) {
+                                               IFA_UNLOCK(ifa);
+                                               error = ENOBUFS;
+                                               break;
+                                       }
+                                       len = rt_msg2(RTM_NEWADDR, &info,
+                                           (caddr_t)cp, NULL, &cred);
+
+                                       ifam = (struct ifa_msghdr *)(void *)cp;
+                                       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;
+
+                                       cp += len;
+                                       VERIFY(IS_P2ALIGNED(cp,
+                                           sizeof(u_int32_t)));
+                                       current_len += len;
+                               }
+                               IFA_UNLOCK(ifa);
+                       }
+                       if (error) {
+                               ifnet_lock_done(ifp);
+                               break;
+                       }
+
+                       for (ifma = LIST_FIRST(&ifp->if_multiaddrs);
+                           ifma != NULL; ifma = LIST_NEXT(ifma, ifma_link)) {
+                               struct ifaddr *ifa0;
+
+                               IFMA_LOCK(ifma);
+                               if (af && af != ifma->ifma_addr->sa_family) {
+                                       IFMA_UNLOCK(ifma);
+                                       continue;
+                               }

                                bzero((caddr_t)&info, sizeof(info));
                                bzero((caddr_t)&info, sizeof(info));

-                               ifaaddr = ifma->ifma_addr;
-                               if (ifp->if_addrhead.tqh_first)
-                                       ifpaddr = ifp->if_addrhead.tqh_first->ifa_addr;
-                               if (ifma->ifma_ll)
-                                       gate = ifma->ifma_ll->ifma_addr;
-                               len = rt_msg2(RTM_NEWMADDR2, &info, 0, w);
-                               if (w->w_req && w->w_tmem) {
+                               info.rti_info[RTAX_IFA] = ifma->ifma_addr;
+                               /*
+                                * Holding ifnet lock here prevents the link
+                                * address from changing contents, so no need
+                                * to hold the ifa0 lock.  The link address is
+                                * always present; it's never freed.
+                                */
+                               ifa0 = ifp->if_lladdr;
+                               info.rti_info[RTAX_IFP] = ifa0->ifa_addr;
+                               if (ifma->ifma_ll != NULL) {
+                                       info.rti_info[RTAX_GATEWAY] =
+                                           ifma->ifma_ll->ifma_addr;
+                               }
+                               len = rt_msg2(RTM_NEWMADDR2, &info, NULL, NULL,
+                                   &cred);
+                               if (pass == 0) {
+                                       total_len += len;
+                               } else {

                                        struct ifma_msghdr2 *ifmam;
 
                                        struct ifma_msghdr2 *ifmam;
 

-                                       ifmam = (struct ifma_msghdr2 *)w->w_tmem;
+                                       if (current_len + len > total_len) {
+                                               IFMA_UNLOCK(ifma);
+                                               error = ENOBUFS;
+                                               break;
+                                       }
+                                       len = rt_msg2(RTM_NEWMADDR2, &info,
+                                           (caddr_t)cp, NULL, &cred);
+
+                                       ifmam =
+                                           (struct ifma_msghdr2 *)(void *)cp;

                                        ifmam->ifmam_addrs = info.rti_addrs;
                                        ifmam->ifmam_flags = 0;
                                        ifmam->ifmam_addrs = info.rti_addrs;
                                        ifmam->ifmam_flags = 0;

-                                       ifmam->ifmam_index = ifma->ifma_ifp->if_index;
-                                       ifmam->ifmam_refcount = ifma->ifma_refcount;
-                                       error = SYSCTL_OUT(w->w_req, w->w_tmem, len);
-                                       if (error)
-                                               break;
+                                       ifmam->ifmam_index =
+                                           ifma->ifma_ifp->if_index;
+                                       ifmam->ifmam_refcount =
+                                           ifma->ifma_reqcnt;
+
+                                       cp += len;
+                                       VERIFY(IS_P2ALIGNED(cp,
+                                           sizeof(u_int32_t)));
+                                       current_len += len;

                                }
                                }

+                               IFMA_UNLOCK(ifma);

                        }
                        }

+                       ifnet_lock_done(ifp);
+                       info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
+                           info.rti_info[RTAX_BRD] = NULL;

                }
                }

-               ifnet_lock_done(ifp);
-               ifaaddr = netmask = brdaddr = 0;
+               ifnet_head_done();
+
+               if (error) {
+                       if (error == ENOBUFS) {
+                               printf("%s: current_len (%d) + len (%d) > "
+                                   "total_len (%d)\n", __func__, current_len,
+                                   len, total_len);
+                       }
+                       break;
+               }
+
+               if (pass == 0) {
+                       /* Better to return zero length buffer than ENOBUFS */
+                       if (total_len == 0) {
+                               total_len = 1;
+                       }
+                       total_len += total_len >> 3;
+                       total_buffer = _MALLOC(total_len, M_RTABLE,
+                           M_ZERO | M_WAITOK);
+                       if (total_buffer == NULL) {
+                               printf("%s: _MALLOC(%d) failed\n", __func__,
+                                   total_len);
+                               error = ENOBUFS;
+                               break;
+                       }
+                       cp = total_buffer;
+                       VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
+               } else {
+                       error = SYSCTL_OUT(w->w_req, total_buffer, current_len);
+                       if (error) {
+                               break;
+                       }
+               }
+       }
+
+       if (total_buffer != NULL) {
+               _FREE(total_buffer, M_RTABLE);

        }
        }

-       ifnet_head_done();
+
+       kauth_cred_unref(&cred);

        return error;
 }
 
        return error;
 }
 


@@ -1333,45 +2127,34 @@ sysctl_iflist2(
 static int
 sysctl_rtstat(struct sysctl_req *req)
 {
 static int
 sysctl_rtstat(struct sysctl_req *req)
 {

-       int error;
-
-       error = SYSCTL_OUT(req, &rtstat, sizeof(struct rtstat));
-       if (error)
-               return (error);
-
-       return 0;
+       return SYSCTL_OUT(req, &rtstat, sizeof(struct rtstat));

 }
 
 static int
 sysctl_rttrash(struct sysctl_req *req)
 {
 }
 
 static int
 sysctl_rttrash(struct sysctl_req *req)
 {

-        int error;
-
-        error = SYSCTL_OUT(req, &rttrash, sizeof(rttrash));
-        if (error)
-                return (error);
-
-        return 0;
+       return SYSCTL_OUT(req, &rttrash, sizeof(rttrash));

 }
 
 }
 

-

 static int
 sysctl_rtsock SYSCTL_HANDLER_ARGS
 {
 #pragma unused(oidp)
 static int
 sysctl_rtsock SYSCTL_HANDLER_ARGS
 {
 #pragma unused(oidp)

-       int     *name = (int *)arg1;
-       u_int   namelen = arg2;
+       int     *name = (int *)arg1;
+       u_int   namelen = arg2;

        struct radix_node_head *rnh;
        struct radix_node_head *rnh;

-       int     i, error = EINVAL;
+       int     i, error = EINVAL;

        u_char  af;
        u_char  af;

-       struct  walkarg w;
+       struct  walkarg w;

 
 

-       name ++;
+       name++;

        namelen--;
        namelen--;

-       if (req->newptr)
-               return (EPERM);
-       if (namelen != 3)
-               return (EINVAL);
+       if (req->newptr) {
+               return EPERM;
+       }
+       if (namelen != 3) {
+               return EINVAL;
+       }

        af = name[0];
        Bzero(&w, sizeof(w));
        w.w_op = name[1];
        af = name[0];
        Bzero(&w, sizeof(w));
        w.w_op = name[1];


@@ -1379,17 +2162,31 @@ sysctl_rtsock SYSCTL_HANDLER_ARGS
        w.w_req = req;
 
        switch (w.w_op) {
        w.w_req = req;
 
        switch (w.w_op) {

-

        case NET_RT_DUMP:
        case NET_RT_DUMP2:
        case NET_RT_FLAGS:
        case NET_RT_DUMP:
        case NET_RT_DUMP2:
        case NET_RT_FLAGS:

-               lck_mtx_lock(rt_mtx);
-               for (i = 1; i <= AF_MAX; i++)
+       case NET_RT_FLAGS_PRIV:
+               lck_mtx_lock(rnh_lock);
+               for (i = 1; i <= AF_MAX; i++) {

                        if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
                            (error = rnh->rnh_walktree(rnh,
                        if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
                            (error = rnh->rnh_walktree(rnh,

-                                                       sysctl_dumpentry, &w)))
+                           sysctl_dumpentry, &w))) {

                                break;
                                break;

-               lck_mtx_unlock(rt_mtx);
+                       }
+               }
+               lck_mtx_unlock(rnh_lock);
+               break;
+       case NET_RT_DUMPX:
+       case NET_RT_DUMPX_FLAGS:
+               lck_mtx_lock(rnh_lock);
+               for (i = 1; i <= AF_MAX; i++) {
+                       if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
+                           (error = rnh->rnh_walktree(rnh,
+                           sysctl_dumpentry_ext, &w))) {
+                               break;
+                       }
+               }
+               lck_mtx_unlock(rnh_lock);

                break;
        case NET_RT_IFLIST:
                error = sysctl_iflist(af, &w);
                break;
        case NET_RT_IFLIST:
                error = sysctl_iflist(af, &w);


@@ -1404,36 +2201,49 @@ sysctl_rtsock SYSCTL_HANDLER_ARGS
                error = sysctl_rttrash(req);
                break;
        }
                error = sysctl_rttrash(req);
                break;
        }

-       if (w.w_tmem)
+       if (w.w_tmem != NULL) {

                FREE(w.w_tmem, M_RTABLE);
                FREE(w.w_tmem, M_RTABLE);

-       return (error);
+       }
+       return error;

 }
 
 }
 

-SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, "");
-

 /*
  * Definitions of protocols supported in the ROUTE domain.
  */
 /*
  * Definitions of protocols supported in the ROUTE domain.
  */

+static struct protosw routesw[] = {
+       {
+               .pr_type =              SOCK_RAW,
+               .pr_protocol =          0,
+               .pr_flags =             PR_ATOMIC | PR_ADDR,
+               .pr_output =            route_output,
+               .pr_ctlinput =          raw_ctlinput,
+               .pr_init =              raw_init,
+               .pr_usrreqs =           &route_usrreqs,
+       }
+};

 
 

-struct domain routedomain;             /* or at least forward */
+static int route_proto_count = (sizeof(routesw) / sizeof(struct protosw));

 
 

-static struct protosw routesw[] = {
-{ SOCK_RAW,    &routedomain,   0,              PR_ATOMIC|PR_ADDR,
-  0,           route_output,   raw_ctlinput,   0,
-  0,
-  raw_init,    0,              0,              0,
-  0, 
-  &route_usrreqs,
-  0,                   0,              0,
-  { 0, 0 },    0,      { 0 }
-}
+struct domain routedomain_s = {
+       .dom_family =           PF_ROUTE,
+       .dom_name =             "route",
+       .dom_init =             route_dinit,

 };
 
 };
 

-struct domain routedomain =
-    { PF_ROUTE, "route", route_init, 0, 0,
-      routesw, 
-      NULL, NULL, 0, 0, 0, 0, NULL, 0, 
-      { 0, 0 } };
+static void
+route_dinit(struct domain *dp)
+{
+       struct protosw *pr;
+       int i;
+
+       VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
+       VERIFY(routedomain == NULL);

 
 

-DOMAIN_SET(route);
+       routedomain = dp;

 
 

+       for (i = 0, pr = &routesw[0]; i < route_proto_count; i++, pr++) {
+               net_add_proto(pr, dp, 1);
+       }
+
+       route_init();
+}