mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-28 22:36:24 +01:00
995add1a12
and one set by the protocol family. Also add another parameter to rtalloc1() to allow for any interface flags to be ignored; currently this is only useful for RTF_PRCLONING. Get rid of rt_prflags and re-unite with rt_flags. Add T/TCP ``route metrics''. NB: YOU MUST RECOMPILE `route' AND OTHER RELATED PROGRAMS AS A RESULT OF THIS CHANGE. This also adds a new interface parameter, `ifi_physical', which will eventually replace IFF_ALTPHYS as the mechanism for specifying the particular physical connection desired on a multiple-connection card. NB: YOU MUST RECOMPILE `ifconfig' AND OTHER RELATED PROGRAMS AS A RESULT OF THIS CHANGE.
800 lines
20 KiB
C
800 lines
20 KiB
C
/*
|
|
* 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 8.3 (Berkeley) 1/4/94
|
|
* $Id: rtsock.c,v 1.7 1994/10/11 23:16:29 wollman Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.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>
|
|
|
|
struct sockaddr route_dst = { 2, PF_ROUTE, };
|
|
struct sockaddr route_src = { 2, PF_ROUTE, };
|
|
struct sockproto route_proto = { PF_ROUTE, };
|
|
|
|
struct walkarg {
|
|
int w_op, w_arg, w_given, w_needed, w_tmemsize;
|
|
caddr_t w_where, w_tmem;
|
|
};
|
|
|
|
static struct mbuf *
|
|
rt_msg1 __P((int, struct rt_addrinfo *));
|
|
static int rt_msg2 __P((int,
|
|
struct rt_addrinfo *, caddr_t, struct walkarg *));
|
|
static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
|
|
|
|
/* 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*/
|
|
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_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_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*/
|
|
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 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);
|
|
}
|
|
rtm->rtm_pid = curproc->p_pid;
|
|
info.rti_addrs = rtm->rtm_addrs;
|
|
rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info);
|
|
if (dst == 0)
|
|
senderr(EINVAL);
|
|
if (genmask) {
|
|
struct radix_node *t;
|
|
t = rn_addmask((caddr_t)genmask, 1, 2);
|
|
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_refcnt--;
|
|
saved_nrt->rt_genmask = genmask;
|
|
}
|
|
break;
|
|
|
|
case RTM_DELETE:
|
|
error = rtrequest(RTM_DELETE, dst, gate, netmask,
|
|
rtm->rtm_flags, (struct rtentry **)0);
|
|
break;
|
|
|
|
case RTM_GET:
|
|
case RTM_CHANGE:
|
|
case RTM_LOCK:
|
|
rt = rtalloc1(dst, 0, 0UL);
|
|
if (rt == 0)
|
|
senderr(ESRCH);
|
|
if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */
|
|
struct radix_node *rn;
|
|
extern struct radix_node_head *mask_rnhead;
|
|
|
|
if (Bcmp(dst, rt_key(rt), dst->sa_len) != 0)
|
|
senderr(ESRCH);
|
|
if (netmask && (rn = rn_search(netmask,
|
|
mask_rnhead->rnh_treetop)))
|
|
netmask = (struct sockaddr *)rn->rn_key;
|
|
for (rn = rt->rt_nodes; rn; rn = rn->rn_dupedkey)
|
|
if (netmask == (struct sockaddr *)rn->rn_mask)
|
|
break;
|
|
if (rn == 0)
|
|
senderr(ETOOMANYREFS);
|
|
rt = (struct rtentry *)rn;
|
|
}
|
|
switch(rtm->rtm_type) {
|
|
|
|
case RTM_GET:
|
|
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_GET, &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_GET, &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 && rt_setgate(rt, rt_key(rt), gate))
|
|
senderr(EDQUOT);
|
|
|
|
/*
|
|
* 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))
|
|
ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate,
|
|
ifp);
|
|
else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) ||
|
|
(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);
|
|
}
|
|
|
|
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))
|
|
|
|
static void
|
|
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;
|
|
rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
|
|
ADVANCE(cp, sa);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
rw->w_needed += len;
|
|
if (rw->w_needed <= 0 && rw->w_where) {
|
|
if (rw->w_tmemsize < len) {
|
|
if (rw->w_tmem)
|
|
free(rw->w_tmem, M_RTABLE);
|
|
rw->w_tmem = (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;
|
|
} else
|
|
rw->w_where = 0;
|
|
}
|
|
}
|
|
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, w)
|
|
struct radix_node *rn;
|
|
register struct walkarg *w;
|
|
{
|
|
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_where && 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 = copyout((caddr_t)rtm, w->w_where, size);
|
|
if (error)
|
|
w->w_where = NULL;
|
|
else
|
|
w->w_where += size;
|
|
}
|
|
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_where && 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 = copyout((caddr_t)ifm, w->w_where, len);
|
|
if (error)
|
|
return (error);
|
|
w->w_where += len;
|
|
}
|
|
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_where && 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 = copyout(w->w_tmem, w->w_where, len);
|
|
if (error)
|
|
return (error);
|
|
w->w_where += len;
|
|
}
|
|
}
|
|
ifaaddr = netmask = brdaddr = 0;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sysctl_rtable(name, namelen, where, given, new, newlen)
|
|
int *name;
|
|
int namelen;
|
|
caddr_t where;
|
|
size_t *given;
|
|
caddr_t *new;
|
|
size_t newlen;
|
|
{
|
|
register struct radix_node_head *rnh;
|
|
int i, s, error = EINVAL;
|
|
u_char af;
|
|
struct walkarg w;
|
|
|
|
if (new)
|
|
return (EPERM);
|
|
if (namelen != 3)
|
|
return (EINVAL);
|
|
af = name[0];
|
|
Bzero(&w, sizeof(w));
|
|
w.w_where = where;
|
|
w.w_given = *given;
|
|
w.w_needed = 0 - w.w_given;
|
|
w.w_op = name[1];
|
|
w.w_arg = name[2];
|
|
|
|
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);
|
|
w.w_needed += w.w_given;
|
|
if (where) {
|
|
*given = w.w_where - where;
|
|
if (*given < w.w_needed)
|
|
return (ENOMEM);
|
|
} else {
|
|
*given = (11 * w.w_needed) / 10;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Definitions of protocols supported in the ROUTE domain.
|
|
*/
|
|
|
|
extern struct domain routedomain; /* or at least forward */
|
|
|
|
struct protosw routesw[] = {
|
|
{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
|
|
raw_input, route_output, raw_ctlinput, 0,
|
|
route_usrreq,
|
|
raw_init, 0, 0, 0,
|
|
sysctl_rtable,
|
|
}
|
|
};
|
|
|
|
struct domain routedomain =
|
|
{ PF_ROUTE, "route", route_init, 0, 0,
|
|
routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };
|