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[OSKITTCP]
[reactos.git] / reactos / lib / drivers / oskittcp / oskittcp / rtsock.c
1 /*
2 * Copyright (c) 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)rtsock.c 8.5 (Berkeley) 11/2/94
34 */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/proc.h>
40 #include <sys/mbuf.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
43 #include <sys/domain.h>
44 #include <sys/protosw.h>
45
46 #include <net/if.h>
47 #include <net/route.h>
48 #include <net/raw_cb.h>
49
50 #include <oskittcp.h>
51
52 struct sockaddr route_dst = { 2, PF_ROUTE, };
53 struct sockaddr route_src = { 2, PF_ROUTE, };
54 struct sockproto route_proto = { PF_ROUTE, };
55
56 struct walkarg {
57 int w_op, w_arg, w_given, w_needed, w_tmemsize;
58 caddr_t w_where, w_tmem;
59 };
60
61 static struct mbuf *
62 rt_msg1 __P((int, struct rt_addrinfo *));
63 static int rt_msg2 __P((int,
64 struct rt_addrinfo *, caddr_t, struct walkarg *));
65 static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
66
67 /* Sleazy use of local variables throughout file, warning!!!! */
68 #define dst info.rti_info[RTAX_DST]
69 #define gate info.rti_info[RTAX_GATEWAY]
70 #define netmask info.rti_info[RTAX_NETMASK]
71 #define genmask info.rti_info[RTAX_GENMASK]
72 #define ifpaddr info.rti_info[RTAX_IFP]
73 #define ifaaddr info.rti_info[RTAX_IFA]
74 #define brdaddr info.rti_info[RTAX_BRD]
75
76 /*ARGSUSED*/
77 int
78 route_usrreq(so, req, m, nam, control)
79 register struct socket *so;
80 int req;
81 struct mbuf *m, *nam, *control;
82 {
83 register int error = 0;
84 register struct rawcb *rp = sotorawcb(so);
85 int s;
86
87 if (req == PRU_ATTACH) {
88 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK);
89 so->so_pcb = (caddr_t)rp;
90 if (so->so_pcb)
91 bzero(so->so_pcb, sizeof(*rp));
92
93 }
94 if (req == PRU_DETACH && rp) {
95 int af = rp->rcb_proto.sp_protocol;
96 if (af == AF_INET)
97 route_cb.ip_count--;
98 else if (af == AF_NS)
99 route_cb.ns_count--;
100 else if (af == AF_ISO)
101 route_cb.iso_count--;
102 route_cb.any_count--;
103 }
104 s = splnet();
105 error = raw_usrreq(so, req, m, nam, control);
106 rp = sotorawcb(so);
107 if (req == PRU_ATTACH && rp) {
108 int af = rp->rcb_proto.sp_protocol;
109 if (error) {
110 free((caddr_t)rp, M_PCB);
111 splx(s);
112 return (error);
113 }
114 if (af == AF_INET)
115 route_cb.ip_count++;
116 else if (af == AF_NS)
117 route_cb.ns_count++;
118 else if (af == AF_ISO)
119 route_cb.iso_count++;
120 rp->rcb_faddr = &route_src;
121 route_cb.any_count++;
122 soisconnected(so);
123 so->so_options |= SO_USELOOPBACK;
124 }
125 splx(s);
126 return (error);
127 }
128
129 /*ARGSUSED*/
130 int
131 route_output(m, so)
132 register struct mbuf *m;
133 struct socket *so;
134 {
135 register struct rt_msghdr *rtm = 0;
136 register struct rtentry *rt = 0;
137 struct rtentry *saved_nrt = 0;
138 struct radix_node_head *rnh;
139 struct rt_addrinfo info;
140 int len, error = 0;
141 struct ifnet *ifp = 0;
142 struct ifaddr *ifa = 0;
143
144 #define senderr(e) { error = e; goto flush;}
145 if (m == 0 || ((m->m_len < sizeof(long)) &&
146 (m = m_pullup(m, sizeof(long))) == 0))
147 return (ENOBUFS);
148 if ((m->m_flags & M_PKTHDR) == 0)
149 panic("route_output");
150 len = m->m_pkthdr.len;
151 if (len < sizeof(*rtm) ||
152 len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
153 dst = 0;
154 senderr(EINVAL);
155 }
156 R_Malloc(rtm, struct rt_msghdr *, len);
157 if (rtm == 0) {
158 dst = 0;
159 senderr(ENOBUFS);
160 }
161 m_copydata(m, 0, len, (caddr_t)rtm);
162 if (rtm->rtm_version != RTM_VERSION) {
163 dst = 0;
164 senderr(EPROTONOSUPPORT);
165 }
166 rtm->rtm_pid = curproc->p_pid;
167 info.rti_addrs = rtm->rtm_addrs;
168 rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info);
169 if (dst == 0)
170 senderr(EINVAL);
171 if (genmask) {
172 struct radix_node *t;
173 t = rn_addmask((caddr_t)genmask, 0, 1);
174 if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0)
175 genmask = (struct sockaddr *)(t->rn_key);
176 else
177 senderr(ENOBUFS);
178 }
179 switch (rtm->rtm_type) {
180
181 case RTM_ADD:
182 if (gate == 0)
183 senderr(EINVAL);
184 error = rtrequest(RTM_ADD, dst, gate, netmask,
185 rtm->rtm_flags, &saved_nrt);
186 if (error == 0 && saved_nrt) {
187 rt_setmetrics(rtm->rtm_inits,
188 &rtm->rtm_rmx, &saved_nrt->rt_rmx);
189 saved_nrt->rt_refcnt--;
190 saved_nrt->rt_genmask = genmask;
191 }
192 break;
193
194 case RTM_DELETE:
195 error = rtrequest(RTM_DELETE, dst, gate, netmask,
196 rtm->rtm_flags, &saved_nrt);
197 if (error == 0) {
198 if ((rt = saved_nrt))
199 rt->rt_refcnt++;
200 goto report;
201 }
202 break;
203
204 case RTM_GET:
205 case RTM_CHANGE:
206 case RTM_LOCK:
207 if ((rnh = rt_tables[dst->sa_family]) == 0) {
208 senderr(EAFNOSUPPORT);
209 } else if ((rt = (struct rtentry *)
210 rnh->rnh_lookup(dst, netmask, rnh)))
211 rt->rt_refcnt++;
212 else
213 senderr(ESRCH);
214 switch(rtm->rtm_type) {
215
216 case RTM_GET:
217 report:
218 dst = rt_key(rt);
219 gate = rt->rt_gateway;
220 netmask = rt_mask(rt);
221 genmask = rt->rt_genmask;
222 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
223 ifp = rt->rt_ifp;
224 if (ifp) {
225 ifpaddr = ifp->if_addrlist->ifa_addr;
226 ifaaddr = rt->rt_ifa->ifa_addr;
227 rtm->rtm_index = ifp->if_index;
228 } else {
229 ifpaddr = 0;
230 ifaaddr = 0;
231 }
232 }
233 len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0,
234 (struct walkarg *)0);
235 if (len > rtm->rtm_msglen) {
236 struct rt_msghdr *new_rtm;
237 R_Malloc(new_rtm, struct rt_msghdr *, len);
238 if (new_rtm == 0)
239 senderr(ENOBUFS);
240 Bcopy(rtm, new_rtm, rtm->rtm_msglen);
241 Free(rtm); rtm = new_rtm;
242 }
243 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm,
244 (struct walkarg *)0);
245 rtm->rtm_flags = rt->rt_flags;
246 rtm->rtm_rmx = rt->rt_rmx;
247 rtm->rtm_addrs = info.rti_addrs;
248 break;
249
250 case RTM_CHANGE:
251 if (gate && rt_setgate(rt, rt_key(rt), gate))
252 senderr(EDQUOT);
253
254 /*
255 * If they tried to change things but didn't specify
256 * the required gateway, then just use the old one.
257 * This can happen if the user tries to change the
258 * flags on the default route without changing the
259 * default gateway. Changing flags still doesn't work.
260 */
261 if ((rt->rt_flags & RTF_GATEWAY) && !gate)
262 gate = rt->rt_gateway;
263
264 #ifndef __REACTOS__
265 /* new gateway could require new ifaddr, ifp;
266 flags may also be different; ifp may be specified
267 by ll sockaddr when protocol address is ambiguous */
268 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) &&
269 (ifp = ifa->ifa_ifp))
270 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate,
271 ifp);
272 #endif
273
274 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) ||
275 (ifa = ifa_ifwithroute(rt->rt_flags,
276 rt_key(rt), gate)))
277 #ifndef __REACTOS__
278 ifp = ifa->ifa_ifp;
279 #else
280 (void)0;
281 #endif
282 if (ifa) {
283 register struct ifaddr *oifa = rt->rt_ifa;
284 if (oifa != ifa) {
285 #ifndef __REACTOS__
286 if (oifa && oifa->ifa_rtrequest)
287 oifa->ifa_rtrequest(RTM_DELETE,
288 rt, gate);
289 #endif
290 IFAFREE(rt->rt_ifa);
291 rt->rt_ifa = ifa;
292 ifa->ifa_refcnt++;
293 rt->rt_ifp = ifp;
294 }
295 }
296 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
297 &rt->rt_rmx);
298 #ifndef __REACTOS__
299 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
300 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate);
301 #endif
302 if (genmask)
303 rt->rt_genmask = genmask;
304 /*
305 * Fall into
306 */
307 case RTM_LOCK:
308 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
309 rt->rt_rmx.rmx_locks |=
310 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
311 break;
312 }
313 break;
314
315 default:
316 senderr(EOPNOTSUPP);
317 }
318
319 flush:
320 if (rtm) {
321 if (error)
322 rtm->rtm_errno = error;
323 else
324 rtm->rtm_flags |= RTF_DONE;
325 }
326 if (rt)
327 rtfree(rt);
328 {
329 register struct rawcb *rp = 0;
330 /*
331 * Check to see if we don't want our own messages.
332 */
333 if ((so->so_options & SO_USELOOPBACK) == 0) {
334 if (route_cb.any_count <= 1) {
335 if (rtm)
336 Free(rtm);
337 m_freem(m);
338 return (error);
339 }
340 /* There is another listener, so construct message */
341 rp = sotorawcb(so);
342 }
343 if (rtm) {
344 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
345 Free(rtm);
346 }
347 if (rp)
348 rp->rcb_proto.sp_family = 0; /* Avoid us */
349 if (dst)
350 route_proto.sp_protocol = dst->sa_family;
351 raw_input(m, &route_proto, &route_src, &route_dst);
352 if (rp)
353 rp->rcb_proto.sp_family = PF_ROUTE;
354 }
355 return (error);
356 }
357
358 void
359 rt_setmetrics(which, in, out)
360 u_long which;
361 register struct rt_metrics *in, *out;
362 {
363 #define metric(f, e) if (which & (f)) out->e = in->e;
364 metric(RTV_RPIPE, rmx_recvpipe);
365 metric(RTV_SPIPE, rmx_sendpipe);
366 metric(RTV_SSTHRESH, rmx_ssthresh);
367 metric(RTV_RTT, rmx_rtt);
368 metric(RTV_RTTVAR, rmx_rttvar);
369 metric(RTV_HOPCOUNT, rmx_hopcount);
370 metric(RTV_MTU, rmx_mtu);
371 metric(RTV_EXPIRE, rmx_expire);
372 #undef metric
373 }
374
375 #define ROUNDUP(a) \
376 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
377 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
378
379 static void
380 rt_xaddrs(cp, cplim, rtinfo)
381 register caddr_t cp, cplim;
382 register struct rt_addrinfo *rtinfo;
383 {
384 register struct sockaddr *sa;
385 register int i;
386
387 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
388 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
389 if ((rtinfo->rti_addrs & (1 << i)) == 0)
390 continue;
391 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
392 ADVANCE(cp, sa);
393 }
394 }
395
396 static struct mbuf *
397 rt_msg1(type, rtinfo)
398 int type;
399 register struct rt_addrinfo *rtinfo;
400 {
401 register struct rt_msghdr *rtm;
402 register struct mbuf *m;
403 register int i;
404 register struct sockaddr *sa;
405 int len, dlen;
406
407 m = m_gethdr(M_DONTWAIT, MT_DATA);
408 if (m == 0)
409 return (m);
410 switch (type) {
411
412 case RTM_DELADDR:
413 case RTM_NEWADDR:
414 len = sizeof(struct ifa_msghdr);
415 break;
416
417 case RTM_IFINFO:
418 len = sizeof(struct if_msghdr);
419 break;
420
421 default:
422 len = sizeof(struct rt_msghdr);
423 }
424 if (len > MHLEN)
425 panic("rt_msg1");
426 m->m_pkthdr.len = m->m_len = len;
427 m->m_pkthdr.rcvif = 0;
428 rtm = mtod(m, struct rt_msghdr *);
429 bzero((caddr_t)rtm, len);
430 for (i = 0; i < RTAX_MAX; i++) {
431 if ((sa = rtinfo->rti_info[i]) == NULL)
432 continue;
433 rtinfo->rti_addrs |= (1 << i);
434 dlen = ROUNDUP(sa->sa_len);
435 m_copyback(m, len, dlen, (caddr_t)sa);
436 len += dlen;
437 }
438 if (m->m_pkthdr.len != len) {
439 m_freem(m);
440 return (NULL);
441 }
442 rtm->rtm_msglen = len;
443 rtm->rtm_version = RTM_VERSION;
444 rtm->rtm_type = type;
445 return (m);
446 }
447
448 static int
449 rt_msg2(type, rtinfo, cp, w)
450 int type;
451 register struct rt_addrinfo *rtinfo;
452 caddr_t cp;
453 struct walkarg *w;
454 {
455 register int i;
456 int len, dlen, second_time = 0;
457 caddr_t cp0;
458
459 rtinfo->rti_addrs = 0;
460 again:
461 switch (type) {
462
463 case RTM_DELADDR:
464 case RTM_NEWADDR:
465 len = sizeof(struct ifa_msghdr);
466 break;
467
468 case RTM_IFINFO:
469 len = sizeof(struct if_msghdr);
470 break;
471
472 default:
473 len = sizeof(struct rt_msghdr);
474 }
475 cp0 = cp;
476 if (cp0)
477 cp += len;
478 for (i = 0; i < RTAX_MAX; i++) {
479 register struct sockaddr *sa;
480
481 if ((sa = rtinfo->rti_info[i]) == 0)
482 continue;
483 rtinfo->rti_addrs |= (1 << i);
484 dlen = ROUNDUP(sa->sa_len);
485 if (cp) {
486 bcopy((caddr_t)sa, cp, (unsigned)dlen);
487 cp += dlen;
488 }
489 len += dlen;
490 }
491 if (cp == 0 && w != NULL && !second_time) {
492 register struct walkarg *rw = w;
493
494 rw->w_needed += len;
495 if (rw->w_needed <= 0 && rw->w_where) {
496 if (rw->w_tmemsize < len) {
497 if (rw->w_tmem)
498 free(rw->w_tmem, M_RTABLE);
499 rw->w_tmem = (caddr_t)
500 malloc(len, M_RTABLE, M_NOWAIT);
501 if (rw->w_tmem)
502 rw->w_tmemsize = len;
503 }
504 if (rw->w_tmem) {
505 cp = rw->w_tmem;
506 second_time = 1;
507 goto again;
508 } else
509 rw->w_where = 0;
510 }
511 }
512 if (cp) {
513 register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
514
515 rtm->rtm_version = RTM_VERSION;
516 rtm->rtm_type = type;
517 rtm->rtm_msglen = len;
518 }
519 return (len);
520 }
521
522 /*
523 * This routine is called to generate a message from the routing
524 * socket indicating that a redirect has occured, a routing lookup
525 * has failed, or that a protocol has detected timeouts to a particular
526 * destination.
527 */
528 void
529 rt_missmsg(type, rtinfo, flags, error)
530 int type, flags, error;
531 register struct rt_addrinfo *rtinfo;
532 {
533 register struct rt_msghdr *rtm;
534 register struct mbuf *m;
535 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
536
537 if (route_cb.any_count == 0)
538 return;
539 m = rt_msg1(type, rtinfo);
540 if (m == 0)
541 return;
542 rtm = mtod(m, struct rt_msghdr *);
543 rtm->rtm_flags = RTF_DONE | flags;
544 rtm->rtm_errno = error;
545 rtm->rtm_addrs = rtinfo->rti_addrs;
546 route_proto.sp_protocol = sa ? sa->sa_family : 0;
547 raw_input(m, &route_proto, &route_src, &route_dst);
548 }
549
550 /*
551 * This routine is called to generate a message from the routing
552 * socket indicating that the status of a network interface has changed.
553 */
554 void
555 rt_ifmsg(ifp)
556 register struct ifnet *ifp;
557 {
558 register struct if_msghdr *ifm;
559 struct mbuf *m;
560 struct rt_addrinfo info;
561
562 if (route_cb.any_count == 0)
563 return;
564 bzero((caddr_t)&info, sizeof(info));
565 m = rt_msg1(RTM_IFINFO, &info);
566 if (m == 0)
567 return;
568 ifm = mtod(m, struct if_msghdr *);
569 ifm->ifm_index = ifp->if_index;
570 ifm->ifm_flags = (u_short)ifp->if_flags;
571 ifm->ifm_data = ifp->if_data;
572 ifm->ifm_addrs = 0;
573 route_proto.sp_protocol = 0;
574 raw_input(m, &route_proto, &route_src, &route_dst);
575 }
576
577 /*
578 * This is called to generate messages from the routing socket
579 * indicating a network interface has had addresses associated with it.
580 * if we ever reverse the logic and replace messages TO the routing
581 * socket indicate a request to configure interfaces, then it will
582 * be unnecessary as the routing socket will automatically generate
583 * copies of it.
584 */
585 void
586 rt_newaddrmsg(cmd, ifa, error, rt)
587 int cmd, error;
588 register struct ifaddr *ifa;
589 register struct rtentry *rt;
590 {
591 struct rt_addrinfo info;
592 struct sockaddr *sa = 0;
593 int pass;
594 struct mbuf *m = 0;
595 #ifndef __REACTOS__
596 struct ifnet *ifp = ifa->ifa_ifp;
597 #endif
598
599 if (route_cb.any_count == 0)
600 return;
601 for (pass = 1; pass < 3; pass++) {
602 bzero((caddr_t)&info, sizeof(info));
603 if ((cmd == RTM_ADD && pass == 1) ||
604 (cmd == RTM_DELETE && pass == 2)) {
605 register struct ifa_msghdr *ifam;
606 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
607
608 ifaaddr = sa = ifa->ifa_addr;
609 #ifndef __REACTOS__
610 ifpaddr = ifp->if_addrlist->ifa_addr;
611 #endif
612 netmask = ifa->ifa_netmask;
613 brdaddr = ifa->ifa_dstaddr;
614 if ((m = rt_msg1(ncmd, &info)) == NULL)
615 continue;
616 ifam = mtod(m, struct ifa_msghdr *);
617 #ifndef __REACTOS__
618 ifam->ifam_index = ifp->if_index;
619 #endif
620 ifam->ifam_metric = ifa->ifa_metric;
621 ifam->ifam_flags = ifa->ifa_flags;
622 ifam->ifam_addrs = info.rti_addrs;
623 }
624 if ((cmd == RTM_ADD && pass == 2) ||
625 (cmd == RTM_DELETE && pass == 1)) {
626 register struct rt_msghdr *rtm;
627
628 if (rt == 0)
629 continue;
630 netmask = rt_mask(rt);
631 dst = sa = rt_key(rt);
632 gate = rt->rt_gateway;
633 if ((m = rt_msg1(cmd, &info)) == NULL)
634 continue;
635 rtm = mtod(m, struct rt_msghdr *);
636 #ifndef __REACTOS__
637 rtm->rtm_index = ifp->if_index;
638 #endif
639 rtm->rtm_flags |= rt->rt_flags;
640 rtm->rtm_errno = error;
641 rtm->rtm_addrs = info.rti_addrs;
642 }
643 route_proto.sp_protocol = sa ? sa->sa_family : 0;
644 raw_input(m, &route_proto, &route_src, &route_dst);
645 }
646 }
647
648 /*
649 * This is used in dumping the kernel table via sysctl().
650 */
651 int
652 sysctl_dumpentry(rn, w)
653 struct radix_node *rn;
654 register struct walkarg *w;
655 {
656 register struct rtentry *rt = (struct rtentry *)rn;
657 int error = 0, size;
658 struct rt_addrinfo info;
659
660 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg))
661 return 0;
662 bzero((caddr_t)&info, sizeof(info));
663 dst = rt_key(rt);
664 gate = rt->rt_gateway;
665 netmask = rt_mask(rt);
666 genmask = rt->rt_genmask;
667 size = rt_msg2(RTM_GET, &info, 0, w);
668 if (w->w_where && w->w_tmem) {
669 register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
670
671 rtm->rtm_flags = rt->rt_flags;
672 rtm->rtm_use = rt->rt_use;
673 rtm->rtm_rmx = rt->rt_rmx;
674 rtm->rtm_index = rt->rt_ifp->if_index;
675 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0;
676 rtm->rtm_addrs = info.rti_addrs;
677 error = copyout((caddr_t)rtm, w->w_where, size);
678 if (error)
679 w->w_where = NULL;
680 else
681 w->w_where += size;
682 }
683 return (error);
684 }
685
686 int
687 sysctl_iflist(af, w)
688 int af;
689 register struct walkarg *w;
690 {
691 register struct ifnet *ifp;
692 register struct ifaddr *ifa;
693 struct rt_addrinfo info;
694 int len, error = 0;
695
696 bzero((caddr_t)&info, sizeof(info));
697 for (ifp = ifnet; ifp; ifp = ifp->if_next) {
698 if (w->w_arg && w->w_arg != ifp->if_index)
699 continue;
700 ifa = ifp->if_addrlist;
701 ifpaddr = ifa->ifa_addr;
702 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w);
703 ifpaddr = 0;
704 if (w->w_where && w->w_tmem) {
705 register struct if_msghdr *ifm;
706
707 ifm = (struct if_msghdr *)w->w_tmem;
708 ifm->ifm_index = ifp->if_index;
709 ifm->ifm_flags = (u_short)ifp->if_flags;
710 ifm->ifm_data = ifp->if_data;
711 ifm->ifm_addrs = info.rti_addrs;
712 error = copyout((caddr_t)ifm, w->w_where, len);
713 if (error)
714 return (error);
715 w->w_where += len;
716 }
717 #ifndef __REACTOS__
718 while ((ifa = ifa->ifa_next) != 0) {
719 if (af && af != ifa->ifa_addr->sa_family)
720 continue;
721 ifaaddr = ifa->ifa_addr;
722 netmask = ifa->ifa_netmask;
723 brdaddr = ifa->ifa_dstaddr;
724 len = rt_msg2(RTM_NEWADDR, &info, 0, w);
725 if (w->w_where && w->w_tmem) {
726 register struct ifa_msghdr *ifam;
727
728 ifam = (struct ifa_msghdr *)w->w_tmem;
729 ifam->ifam_index = ifa->ifa_ifp->if_index;
730 ifam->ifam_flags = ifa->ifa_flags;
731 ifam->ifam_metric = ifa->ifa_metric;
732 ifam->ifam_addrs = info.rti_addrs;
733 error = copyout(w->w_tmem, w->w_where, len);
734 if (error)
735 return (error);
736 w->w_where += len;
737 }
738 }
739 #endif
740 ifaaddr = netmask = brdaddr = 0;
741 }
742 return (0);
743 }
744
745 int
746 sysctl_rtable(name, namelen, where, given, new, newlen)
747 int *name;
748 int namelen;
749 caddr_t where;
750 size_t *given;
751 caddr_t *new;
752 size_t newlen;
753 {
754 register struct radix_node_head *rnh;
755 int i, s, error = EINVAL;
756 u_char af;
757 struct walkarg w;
758
759 if (new)
760 return (EPERM);
761 if (namelen != 3)
762 return (EINVAL);
763 af = name[0];
764 Bzero(&w, sizeof(w));
765 w.w_where = where;
766 w.w_given = *given;
767 w.w_needed = 0 - w.w_given;
768 w.w_op = name[1];
769 w.w_arg = name[2];
770
771 s = splnet();
772 switch (w.w_op) {
773
774 case NET_RT_DUMP:
775 case NET_RT_FLAGS:
776 for (i = 1; i <= AF_MAX; i++)
777 if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
778 (error = rnh->rnh_walktree(rnh,
779 sysctl_dumpentry, &w)))
780 break;
781 break;
782
783 case NET_RT_IFLIST:
784 error = sysctl_iflist(af, &w);
785 }
786 splx(s);
787 if (w.w_tmem)
788 free(w.w_tmem, M_RTABLE);
789 w.w_needed += w.w_given;
790 if (where) {
791 *given = w.w_where - where;
792 if (*given < w.w_needed)
793 return (ENOMEM);
794 } else {
795 *given = (11 * w.w_needed) / 10;
796 }
797 return (error);
798 }
799
800 /*
801 * Definitions of protocols supported in the ROUTE domain.
802 */
803
804 extern struct domain routedomain; /* or at least forward */
805
806 struct protosw routesw[] = {
807 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
808 raw_input, route_output, raw_ctlinput, 0,
809 route_usrreq,
810 raw_init, 0, 0, 0,
811 sysctl_rtable,
812 }
813 };
814
815 struct domain routedomain =
816 { PF_ROUTE, "route", route_init, 0, 0,
817 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] };
818
819 DOMAIN_SET(route);
A free Windows-compatible Operating System