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-rw-r--r--c/src/exec/libnetworking/net/rtsock.c829
1 files changed, 829 insertions, 0 deletions
diff --git a/c/src/exec/libnetworking/net/rtsock.c b/c/src/exec/libnetworking/net/rtsock.c
new file mode 100644
index 0000000000..2a08181000
--- /dev/null
+++ b/c/src/exec/libnetworking/net/rtsock.c
@@ -0,0 +1,829 @@
+/*
+ * Copyright (c) 1988, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)rtsock.c 8.5 (Berkeley) 11/2/94
+ * $Id$
+ */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+#include <sys/proc.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/domain.h>
+#include <sys/protosw.h>
+
+#include <net/if.h>
+#include <net/route.h>
+#include <net/raw_cb.h>
+
+static struct sockaddr route_dst = { 2, PF_ROUTE, };
+static struct sockaddr route_src = { 2, PF_ROUTE, };
+static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, };
+static struct sockproto route_proto = { PF_ROUTE, };
+
+struct walkarg {
+ int w_tmemsize;
+ int w_op, w_arg;
+ caddr_t w_tmem;
+ struct sysctl_req *w_req;
+};
+
+static struct mbuf *
+ rt_msg1 __P((int, struct rt_addrinfo *));
+static int rt_msg2 __P((int,
+ struct rt_addrinfo *, caddr_t, struct walkarg *));
+static int rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
+static int sysctl_dumpentry __P((struct radix_node *rn, void *vw));
+static int sysctl_iflist __P((int af, struct walkarg *w));
+static int route_output __P((struct mbuf *, struct socket *));
+static int route_usrreq __P((struct socket *,
+ int, struct mbuf *, struct mbuf *, struct mbuf *));
+static void rt_setmetrics __P((u_long, struct rt_metrics *, struct rt_metrics *));
+
+/* 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]
+
+/*ARGSUSED*/
+static int
+route_usrreq(so, req, m, nam, control)
+ register struct socket *so;
+ int req;
+ struct mbuf *m, *nam, *control;
+{
+ register int error = 0;
+ register struct rawcb *rp = sotorawcb(so);
+ int s;
+
+ if (req == PRU_ATTACH) {
+ MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK);
+ so->so_pcb = (caddr_t)rp;
+ if (so->so_pcb)
+ bzero(so->so_pcb, sizeof(*rp));
+ }
+ if (req == PRU_DETACH && rp) {
+ int af = rp->rcb_proto.sp_protocol;
+ if (af == AF_INET)
+ route_cb.ip_count--;
+ else if (af == AF_IPX)
+ route_cb.ipx_count--;
+ else if (af == AF_NS)
+ route_cb.ns_count--;
+ else if (af == AF_ISO)
+ route_cb.iso_count--;
+ route_cb.any_count--;
+ }
+ s = splnet();
+ error = raw_usrreq(so, req, m, nam, control);
+ rp = sotorawcb(so);
+ if (req == PRU_ATTACH && rp) {
+ int af = rp->rcb_proto.sp_protocol;
+ if (error) {
+ free((caddr_t)rp, M_PCB);
+ splx(s);
+ return (error);
+ }
+ if (af == AF_INET)
+ route_cb.ip_count++;
+ else if (af == AF_IPX)
+ route_cb.ipx_count++;
+ else if (af == AF_NS)
+ route_cb.ns_count++;
+ else if (af == AF_ISO)
+ route_cb.iso_count++;
+ rp->rcb_faddr = &route_src;
+ route_cb.any_count++;
+ soisconnected(so);
+ so->so_options |= SO_USELOOPBACK;
+ }
+ splx(s);
+ return (error);
+}
+
+/*ARGSUSED*/
+static int
+route_output(m, so)
+ register struct mbuf *m;
+ struct socket *so;
+{
+ register struct rt_msghdr *rtm = 0;
+ register struct rtentry *rt = 0;
+ struct rtentry *saved_nrt = 0;
+ struct radix_node_head *rnh;
+ struct rt_addrinfo info;
+ int len, error = 0;
+ struct ifnet *ifp = 0;
+ struct ifaddr *ifa = 0;
+
+#define senderr(e) { error = e; goto flush;}
+ if (m == 0 || ((m->m_len < sizeof(long)) &&
+ (m = m_pullup(m, sizeof(long))) == 0))
+ return (ENOBUFS);
+ if ((m->m_flags & M_PKTHDR) == 0)
+ panic("route_output");
+ len = m->m_pkthdr.len;
+ if (len < sizeof(*rtm) ||
+ len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
+ dst = 0;
+ senderr(EINVAL);
+ }
+ R_Malloc(rtm, struct rt_msghdr *, len);
+ if (rtm == 0) {
+ dst = 0;
+ senderr(ENOBUFS);
+ }
+ m_copydata(m, 0, len, (caddr_t)rtm);
+ if (rtm->rtm_version != RTM_VERSION) {
+ dst = 0;
+ senderr(EPROTONOSUPPORT);
+ }
+ info.rti_addrs = rtm->rtm_addrs;
+ if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {
+ dst = 0;
+ senderr(EINVAL);
+ }
+ if (dst == 0 || (dst->sa_family >= AF_MAX)
+ || (gate != 0 && (gate->sa_family >= AF_MAX)))
+ senderr(EINVAL);
+ if (genmask) {
+ 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
+ senderr(ENOBUFS);
+ }
+ switch (rtm->rtm_type) {
+
+ case RTM_ADD:
+ if (gate == 0)
+ senderr(EINVAL);
+ error = rtrequest(RTM_ADD, dst, gate, netmask,
+ rtm->rtm_flags, &saved_nrt);
+ if (error == 0 && saved_nrt) {
+ 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_refcnt--;
+ saved_nrt->rt_genmask = genmask;
+ }
+ break;
+
+ case RTM_DELETE:
+ error = rtrequest(RTM_DELETE, dst, gate, netmask,
+ rtm->rtm_flags, &saved_nrt);
+ if (error == 0) {
+ if ((rt = saved_nrt))
+ rt->rt_refcnt++;
+ goto report;
+ }
+ break;
+
+ case RTM_GET:
+ case RTM_CHANGE:
+ case RTM_LOCK:
+ if ((rnh = rt_tables[dst->sa_family]) == 0) {
+ senderr(EAFNOSUPPORT);
+ } else if (rt = (struct rtentry *)
+ rnh->rnh_lookup(dst, netmask, rnh))
+ rt->rt_refcnt++;
+ else
+ senderr(ESRCH);
+ switch(rtm->rtm_type) {
+
+ case RTM_GET:
+ 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) {
+ ifpaddr = ifp->if_addrlist->ifa_addr;
+ 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);
+ 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;
+
+ 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;
+
+ /* new gateway could require new ifaddr, ifp;
+ flags may also be different; ifp may be specified
+ by ll sockaddr when protocol address is ambiguous */
+ if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) &&
+ (ifp = ifa->ifa_ifp) && (ifaaddr || gate))
+ ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate,
+ ifp);
+ else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) ||
+ (gate && (ifa = ifa_ifwithroute(rt->rt_flags,
+ rt_key(rt), gate))))
+ ifp = ifa->ifa_ifp;
+ if (ifa) {
+ register struct ifaddr *oifa = rt->rt_ifa;
+ if (oifa != ifa) {
+ if (oifa && oifa->ifa_rtrequest)
+ oifa->ifa_rtrequest(RTM_DELETE,
+ rt, gate);
+ IFAFREE(rt->rt_ifa);
+ rt->rt_ifa = ifa;
+ ifa->ifa_refcnt++;
+ rt->rt_ifp = ifp;
+ }
+ }
+ rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
+ &rt->rt_rmx);
+ if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
+ rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate);
+ 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;
+ }
+ break;
+
+ default:
+ senderr(EOPNOTSUPP);
+ }
+
+flush:
+ if (rtm) {
+ if (error)
+ rtm->rtm_errno = error;
+ else
+ rtm->rtm_flags |= RTF_DONE;
+ }
+ if (rt)
+ rtfree(rt);
+ {
+ register struct rawcb *rp = 0;
+ /*
+ * Check to see if we don't want our own messages.
+ */
+ if ((so->so_options & SO_USELOOPBACK) == 0) {
+ if (route_cb.any_count <= 1) {
+ if (rtm)
+ Free(rtm);
+ m_freem(m);
+ return (error);
+ }
+ /* There is another listener, so construct message */
+ rp = sotorawcb(so);
+ }
+ if (rtm) {
+ m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
+ Free(rtm);
+ }
+ if (rp)
+ rp->rcb_proto.sp_family = 0; /* Avoid us */
+ if (dst)
+ route_proto.sp_protocol = dst->sa_family;
+ raw_input(m, &route_proto, &route_src, &route_dst);
+ if (rp)
+ rp->rcb_proto.sp_family = PF_ROUTE;
+ }
+ return (error);
+}
+
+static void
+rt_setmetrics(which, in, out)
+ u_long which;
+ register struct rt_metrics *in, *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);
+#undef metric
+}
+
+#define ROUNDUP(a) \
+ ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+
+
+/*
+ * Extract the addresses of the passed sockaddrs.
+ * Do a little sanity checking so as to avoid bad memory references.
+ * This data is derived straight from userland.
+ */
+static int
+rt_xaddrs(cp, cplim, rtinfo)
+ register caddr_t cp, cplim;
+ register struct rt_addrinfo *rtinfo;
+{
+ register struct sockaddr *sa;
+ register int 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)
+ continue;
+ sa = (struct sockaddr *)cp;
+ /*
+ * It won't fit.
+ */
+ if ( (cp + sa->sa_len) > cplim ) {
+ return (EINVAL);
+ }
+
+ /*
+ * 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.
+ * 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 */
+ }
+
+ /* accept it */
+ rtinfo->rti_info[i] = sa;
+ ADVANCE(cp, sa);
+ }
+ return (0);
+}
+
+static struct mbuf *
+rt_msg1(type, rtinfo)
+ int type;
+ register struct rt_addrinfo *rtinfo;
+{
+ register struct rt_msghdr *rtm;
+ register struct mbuf *m;
+ register int i;
+ register struct sockaddr *sa;
+ int len, dlen;
+
+ m = m_gethdr(M_DONTWAIT, MT_DATA);
+ if (m == 0)
+ return (m);
+ switch (type) {
+
+ case RTM_DELADDR:
+ case RTM_NEWADDR:
+ len = sizeof(struct ifa_msghdr);
+ break;
+
+ case RTM_IFINFO:
+ len = sizeof(struct if_msghdr);
+ break;
+
+ default:
+ len = sizeof(struct rt_msghdr);
+ }
+ if (len > MHLEN)
+ panic("rt_msg1");
+ m->m_pkthdr.len = m->m_len = len;
+ m->m_pkthdr.rcvif = 0;
+ rtm = mtod(m, struct rt_msghdr *);
+ bzero((caddr_t)rtm, len);
+ for (i = 0; i < RTAX_MAX; i++) {
+ if ((sa = rtinfo->rti_info[i]) == NULL)
+ continue;
+ rtinfo->rti_addrs |= (1 << i);
+ dlen = ROUNDUP(sa->sa_len);
+ m_copyback(m, len, dlen, (caddr_t)sa);
+ len += dlen;
+ }
+ if (m->m_pkthdr.len != len) {
+ m_freem(m);
+ return (NULL);
+ }
+ rtm->rtm_msglen = len;
+ rtm->rtm_version = RTM_VERSION;
+ rtm->rtm_type = type;
+ return (m);
+}
+
+static int
+rt_msg2(type, rtinfo, cp, w)
+ int type;
+ register struct rt_addrinfo *rtinfo;
+ caddr_t cp;
+ struct walkarg *w;
+{
+ register int i;
+ int len, dlen, second_time = 0;
+ caddr_t cp0;
+
+ rtinfo->rti_addrs = 0;
+again:
+ switch (type) {
+
+ case RTM_DELADDR:
+ case RTM_NEWADDR:
+ len = sizeof(struct ifa_msghdr);
+ break;
+
+ case RTM_IFINFO:
+ len = sizeof(struct if_msghdr);
+ break;
+
+ default:
+ len = sizeof(struct rt_msghdr);
+ }
+ cp0 = cp;
+ if (cp0)
+ cp += len;
+ for (i = 0; i < RTAX_MAX; i++) {
+ register struct sockaddr *sa;
+
+ if ((sa = rtinfo->rti_info[i]) == 0)
+ continue;
+ rtinfo->rti_addrs |= (1 << i);
+ dlen = ROUNDUP(sa->sa_len);
+ if (cp) {
+ bcopy((caddr_t)sa, cp, (unsigned)dlen);
+ cp += dlen;
+ }
+ len += dlen;
+ }
+ if (cp == 0 && w != NULL && !second_time) {
+ register struct walkarg *rw = w;
+
+ if (rw->w_req) {
+ if (rw->w_tmemsize < len) {
+ if (rw->w_tmem)
+ free(rw->w_tmem, M_RTABLE);
+ rw->w_tmem = (caddr_t)
+ malloc(len, M_RTABLE, M_NOWAIT);
+ if (rw->w_tmem)
+ rw->w_tmemsize = len;
+ }
+ if (rw->w_tmem) {
+ cp = rw->w_tmem;
+ second_time = 1;
+ goto again;
+ }
+ }
+ }
+ if (cp) {
+ register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
+
+ rtm->rtm_version = RTM_VERSION;
+ rtm->rtm_type = type;
+ rtm->rtm_msglen = len;
+ }
+ return (len);
+}
+
+/*
+ * This routine is called to generate a message from the routing
+ * socket indicating that a redirect has occured, a routing lookup
+ * has failed, or that a protocol has detected timeouts to a particular
+ * destination.
+ */
+void
+rt_missmsg(type, rtinfo, flags, error)
+ int type, flags, error;
+ register struct rt_addrinfo *rtinfo;
+{
+ register struct rt_msghdr *rtm;
+ register struct mbuf *m;
+ struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
+
+ if (route_cb.any_count == 0)
+ return;
+ m = rt_msg1(type, rtinfo);
+ if (m == 0)
+ return;
+ 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;
+ raw_input(m, &route_proto, &route_src, &route_dst);
+}
+
+/*
+ * This routine is called to generate a message from the routing
+ * socket indicating that the status of a network interface has changed.
+ */
+void
+rt_ifmsg(ifp)
+ register struct ifnet *ifp;
+{
+ register struct if_msghdr *ifm;
+ struct mbuf *m;
+ struct rt_addrinfo info;
+
+ if (route_cb.any_count == 0)
+ return;
+ bzero((caddr_t)&info, sizeof(info));
+ m = rt_msg1(RTM_IFINFO, &info);
+ if (m == 0)
+ return;
+ ifm = mtod(m, struct if_msghdr *);
+ ifm->ifm_index = ifp->if_index;
+ ifm->ifm_flags = (u_short)ifp->if_flags;
+ ifm->ifm_data = ifp->if_data;
+ ifm->ifm_addrs = 0;
+ route_proto.sp_protocol = 0;
+ raw_input(m, &route_proto, &route_src, &route_dst);
+}
+
+/*
+ * This is called to generate messages from the routing socket
+ * indicating a network interface has had addresses associated with it.
+ * if we ever reverse the logic and replace messages TO the routing
+ * socket indicate a request to configure interfaces, then it will
+ * be unnecessary as the routing socket will automatically generate
+ * copies of it.
+ */
+void
+rt_newaddrmsg(cmd, ifa, error, rt)
+ int cmd, error;
+ register struct ifaddr *ifa;
+ register struct rtentry *rt;
+{
+ struct rt_addrinfo info;
+ struct sockaddr *sa = 0;
+ int pass;
+ struct mbuf *m = 0;
+ struct ifnet *ifp = ifa->ifa_ifp;
+
+ if (route_cb.any_count == 0)
+ return;
+ for (pass = 1; pass < 3; pass++) {
+ bzero((caddr_t)&info, sizeof(info));
+ if ((cmd == RTM_ADD && pass == 1) ||
+ (cmd == RTM_DELETE && pass == 2)) {
+ register struct ifa_msghdr *ifam;
+ int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
+
+ ifaaddr = sa = ifa->ifa_addr;
+ ifpaddr = ifp->if_addrlist->ifa_addr;
+ netmask = ifa->ifa_netmask;
+ brdaddr = ifa->ifa_dstaddr;
+ if ((m = rt_msg1(ncmd, &info)) == NULL)
+ continue;
+ ifam = mtod(m, struct ifa_msghdr *);
+ ifam->ifam_index = ifp->if_index;
+ ifam->ifam_metric = ifa->ifa_metric;
+ ifam->ifam_flags = ifa->ifa_flags;
+ ifam->ifam_addrs = info.rti_addrs;
+ }
+ if ((cmd == RTM_ADD && pass == 2) ||
+ (cmd == RTM_DELETE && pass == 1)) {
+ register struct rt_msghdr *rtm;
+
+ if (rt == 0)
+ continue;
+ netmask = rt_mask(rt);
+ dst = sa = rt_key(rt);
+ gate = rt->rt_gateway;
+ if ((m = rt_msg1(cmd, &info)) == NULL)
+ continue;
+ rtm = mtod(m, struct rt_msghdr *);
+ rtm->rtm_index = ifp->if_index;
+ rtm->rtm_flags |= rt->rt_flags;
+ rtm->rtm_errno = error;
+ rtm->rtm_addrs = info.rti_addrs;
+ }
+ route_proto.sp_protocol = sa ? sa->sa_family : 0;
+ raw_input(m, &route_proto, &route_src, &route_dst);
+ }
+}
+
+
+/*
+ * This is used in dumping the kernel table via sysctl().
+ */
+int
+sysctl_dumpentry(rn, vw)
+ struct radix_node *rn;
+ void *vw;
+{
+ register struct walkarg *w = vw;
+ register struct rtentry *rt = (struct rtentry *)rn;
+ int error = 0, size;
+ struct rt_addrinfo info;
+
+ if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
+ return 0;
+ bzero((caddr_t)&info, sizeof(info));
+ dst = rt_key(rt);
+ gate = rt->rt_gateway;
+ netmask = rt_mask(rt);
+ genmask = rt->rt_genmask;
+ size = rt_msg2(RTM_GET, &info, 0, w);
+ if (w->w_req && w->w_tmem) {
+ register struct rt_msghdr *rtm = (struct rt_msghdr *)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_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
+ rtm->rtm_addrs = info.rti_addrs;
+ error = 0;
+ return (error);
+ }
+ return (error);
+}
+
+int
+sysctl_iflist(af, w)
+ int af;
+ register struct walkarg *w;
+{
+ register struct ifnet *ifp;
+ register struct ifaddr *ifa;
+ struct rt_addrinfo info;
+ int len, error = 0;
+
+ bzero((caddr_t)&info, sizeof(info));
+ for (ifp = ifnet; ifp; ifp = ifp->if_next) {
+ if (w->w_arg && w->w_arg != ifp->if_index)
+ continue;
+ ifa = ifp->if_addrlist;
+ ifpaddr = ifa->ifa_addr;
+ len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w);
+ ifpaddr = 0;
+ if (w->w_req && w->w_tmem) {
+ register 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;
+ ifm->ifm_data = ifp->if_data;
+ ifm->ifm_addrs = info.rti_addrs;
+ error =0;
+ if (error)
+ return (error);
+ }
+ while ((ifa = ifa->ifa_next) != 0) {
+ if (af && af != ifa->ifa_addr->sa_family)
+ 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) {
+ register 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 = 0;
+ if (error)
+ return (error);
+ }
+ }
+ ifaaddr = netmask = brdaddr = 0;
+ }
+ return (0);
+}
+
+static int
+sysctl_rtsock SYSCTL_HANDLER_ARGS
+{
+ int *name = (int *)arg1;
+ u_int namelen = arg2;
+ register struct radix_node_head *rnh;
+ int i, s, error = EINVAL;
+ u_char af;
+ struct walkarg w;
+
+ name ++;
+ namelen--;
+ if (req->newptr)
+ return (EPERM);
+ if (namelen != 3)
+ return (EINVAL);
+ af = name[0];
+ Bzero(&w, sizeof(w));
+ w.w_op = name[1];
+ w.w_arg = name[2];
+ w.w_req = req;
+
+ s = splnet();
+ switch (w.w_op) {
+
+ case NET_RT_DUMP:
+ case NET_RT_FLAGS:
+ for (i = 1; i <= AF_MAX; i++)
+ if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
+ (error = rnh->rnh_walktree(rnh,
+ sysctl_dumpentry, &w)))
+ break;
+ break;
+
+ case NET_RT_IFLIST:
+ error = sysctl_iflist(af, &w);
+ }
+ splx(s);
+ if (w.w_tmem)
+ free(w.w_tmem, M_RTABLE);
+ return (error);
+}
+
+SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock,"");
+
+/*
+ * Definitions of protocols supported in the ROUTE domain.
+ */
+
+extern struct domain routedomain; /* or at least forward */
+
+static struct protosw routesw[] = {
+{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
+ 0, route_output, raw_ctlinput, 0,
+ route_usrreq,
+ raw_init
+}
+};
+
+struct domain routedomain =
+ { PF_ROUTE, "route", route_init, 0, 0,
+ routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };
+
+DOMAIN_SET(route);