Commit | Line | Data |
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e831d540 | 1 | /* |
c8dfc989 KB |
2 | * Copyright (c) 1988, 1991, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
e831d540 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
e831d540 | 6 | * |
34a0a1a9 | 7 | * @(#)rtsock.c 8.5 (Berkeley) %G% |
e831d540 KS |
8 | */ |
9 | ||
5548a02f KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/proc.h> | |
13 | #include <sys/mbuf.h> | |
14 | #include <sys/socket.h> | |
15 | #include <sys/socketvar.h> | |
16 | #include <sys/domain.h> | |
17 | #include <sys/protosw.h> | |
e831d540 | 18 | |
5548a02f KB |
19 | #include <net/if.h> |
20 | #include <net/route.h> | |
21 | #include <net/raw_cb.h> | |
e831d540 | 22 | |
e684b424 KS |
23 | struct sockaddr route_dst = { 2, PF_ROUTE, }; |
24 | struct sockaddr route_src = { 2, PF_ROUTE, }; | |
25 | struct sockproto route_proto = { PF_ROUTE, }; | |
26 | ||
27 | struct walkarg { | |
28 | int w_op, w_arg, w_given, w_needed, w_tmemsize; | |
29 | caddr_t w_where, w_tmem; | |
30 | }; | |
31 | ||
a15dacc5 KB |
32 | static struct mbuf * |
33 | rt_msg1 __P((int, struct rt_addrinfo *)); | |
34 | static int rt_msg2 __P((int, | |
35 | struct rt_addrinfo *, caddr_t, struct walkarg *)); | |
36 | static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *)); | |
e684b424 KS |
37 | |
38 | /* Sleazy use of local variables throughout file, warning!!!! */ | |
39 | #define dst info.rti_info[RTAX_DST] | |
40 | #define gate info.rti_info[RTAX_GATEWAY] | |
41 | #define netmask info.rti_info[RTAX_NETMASK] | |
42 | #define genmask info.rti_info[RTAX_GENMASK] | |
43 | #define ifpaddr info.rti_info[RTAX_IFP] | |
44 | #define ifaaddr info.rti_info[RTAX_IFA] | |
45 | #define brdaddr info.rti_info[RTAX_BRD] | |
b72a6efb | 46 | |
e831d540 | 47 | /*ARGSUSED*/ |
a15dacc5 | 48 | int |
a0d75f26 | 49 | route_usrreq(so, req, m, nam, control) |
e831d540 KS |
50 | register struct socket *so; |
51 | int req; | |
a0d75f26 | 52 | struct mbuf *m, *nam, *control; |
e831d540 KS |
53 | { |
54 | register int error = 0; | |
55 | register struct rawcb *rp = sotorawcb(so); | |
67336957 | 56 | int s; |
67e8af50 | 57 | |
b72a6efb KS |
58 | if (req == PRU_ATTACH) { |
59 | MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); | |
60 | if (so->so_pcb = (caddr_t)rp) | |
61 | bzero(so->so_pcb, sizeof(*rp)); | |
62 | ||
63 | } | |
e831d540 KS |
64 | if (req == PRU_DETACH && rp) { |
65 | int af = rp->rcb_proto.sp_protocol; | |
66 | if (af == AF_INET) | |
67 | route_cb.ip_count--; | |
68 | else if (af == AF_NS) | |
69 | route_cb.ns_count--; | |
e831d540 KS |
70 | else if (af == AF_ISO) |
71 | route_cb.iso_count--; | |
e831d540 KS |
72 | route_cb.any_count--; |
73 | } | |
67336957 | 74 | s = splnet(); |
a0d75f26 | 75 | error = raw_usrreq(so, req, m, nam, control); |
e831d540 | 76 | rp = sotorawcb(so); |
b72a6efb | 77 | if (req == PRU_ATTACH && rp) { |
e831d540 | 78 | int af = rp->rcb_proto.sp_protocol; |
b72a6efb KS |
79 | if (error) { |
80 | free((caddr_t)rp, M_PCB); | |
67336957 | 81 | splx(s); |
b72a6efb KS |
82 | return (error); |
83 | } | |
e831d540 KS |
84 | if (af == AF_INET) |
85 | route_cb.ip_count++; | |
86 | else if (af == AF_NS) | |
87 | route_cb.ns_count++; | |
e831d540 KS |
88 | else if (af == AF_ISO) |
89 | route_cb.iso_count++; | |
b72a6efb | 90 | rp->rcb_faddr = &route_src; |
e831d540 KS |
91 | route_cb.any_count++; |
92 | soisconnected(so); | |
2e5be88b | 93 | so->so_options |= SO_USELOOPBACK; |
e831d540 | 94 | } |
67336957 | 95 | splx(s); |
e831d540 KS |
96 | return (error); |
97 | } | |
e831d540 | 98 | |
b72a6efb | 99 | /*ARGSUSED*/ |
a15dacc5 | 100 | int |
e831d540 KS |
101 | route_output(m, so) |
102 | register struct mbuf *m; | |
103 | struct socket *so; | |
104 | { | |
67336957 | 105 | register struct rt_msghdr *rtm = 0; |
e831d540 | 106 | register struct rtentry *rt = 0; |
a0d75f26 | 107 | struct rtentry *saved_nrt = 0; |
fca87511 | 108 | struct radix_node_head *rnh; |
4ba36fcc | 109 | struct radix_node_head *rnh; |
e684b424 | 110 | struct rt_addrinfo info; |
b72a6efb | 111 | int len, error = 0; |
d6bc9b28 | 112 | struct ifnet *ifp = 0; |
f157971f | 113 | struct ifaddr *ifa = 0; |
e831d540 | 114 | |
a0d75f26 | 115 | #define senderr(e) { error = e; goto flush;} |
2bd12e1b KS |
116 | if (m == 0 || ((m->m_len < sizeof(long)) && |
117 | (m = m_pullup(m, sizeof(long))) == 0)) | |
32dfe9ab | 118 | return (ENOBUFS); |
e831d540 | 119 | if ((m->m_flags & M_PKTHDR) == 0) |
32dfe9ab | 120 | panic("route_output"); |
e831d540 | 121 | len = m->m_pkthdr.len; |
67336957 | 122 | if (len < sizeof(*rtm) || |
00feb013 RC |
123 | len != mtod(m, struct rt_msghdr *)->rtm_msglen) { |
124 | dst = 0; | |
a0d75f26 | 125 | senderr(EINVAL); |
00feb013 | 126 | } |
e831d540 | 127 | R_Malloc(rtm, struct rt_msghdr *, len); |
00feb013 RC |
128 | if (rtm == 0) { |
129 | dst = 0; | |
a0d75f26 | 130 | senderr(ENOBUFS); |
00feb013 | 131 | } |
e831d540 | 132 | m_copydata(m, 0, len, (caddr_t)rtm); |
00feb013 RC |
133 | if (rtm->rtm_version != RTM_VERSION) { |
134 | dst = 0; | |
a0d75f26 | 135 | senderr(EPROTONOSUPPORT); |
00feb013 | 136 | } |
31c32e48 | 137 | rtm->rtm_pid = curproc->p_pid; |
e684b424 KS |
138 | info.rti_addrs = rtm->rtm_addrs; |
139 | rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info); | |
140 | if (dst == 0) | |
79e0ea5d | 141 | senderr(EINVAL); |
e684b424 | 142 | if (genmask) { |
a15dacc5 | 143 | struct radix_node *t; |
fca87511 | 144 | t = rn_addmask((caddr_t)genmask, 0, 1); |
d6bc9b28 KS |
145 | if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0) |
146 | genmask = (struct sockaddr *)(t->rn_key); | |
147 | else | |
148 | senderr(ENOBUFS); | |
149 | } | |
e831d540 | 150 | switch (rtm->rtm_type) { |
e684b424 | 151 | |
e831d540 | 152 | case RTM_ADD: |
79e0ea5d KS |
153 | if (gate == 0) |
154 | senderr(EINVAL); | |
e831d540 KS |
155 | error = rtrequest(RTM_ADD, dst, gate, netmask, |
156 | rtm->rtm_flags, &saved_nrt); | |
79e0ea5d KS |
157 | if (error == 0 && saved_nrt) { |
158 | rt_setmetrics(rtm->rtm_inits, | |
159 | &rtm->rtm_rmx, &saved_nrt->rt_rmx); | |
a0d75f26 | 160 | saved_nrt->rt_refcnt--; |
d6bc9b28 | 161 | saved_nrt->rt_genmask = genmask; |
79e0ea5d | 162 | } |
e831d540 KS |
163 | break; |
164 | ||
165 | case RTM_DELETE: | |
166 | error = rtrequest(RTM_DELETE, dst, gate, netmask, | |
4ba36fcc KS |
167 | rtm->rtm_flags, &saved_nrt); |
168 | if (error == 0) { | |
169 | if ((rt = saved_nrt)->rt_refcnt <= 0) | |
170 | rt->rt_refcnt++; | |
171 | goto report; | |
172 | } | |
e831d540 KS |
173 | break; |
174 | ||
175 | case RTM_GET: | |
176 | case RTM_CHANGE: | |
177 | case RTM_LOCK: | |
fca87511 KS |
178 | if ((rnh = rt_tables[dst->sa_family]) == 0) |
179 | senderr(EAFNOSUPPORT); | |
180 | else if (rt = (struct rtentry *) | |
181 | rnh->rnh_lookup(dst, netmask, rnh)) | |
182 | rt->rt_refcnt++; | |
183 | else | |
a0d75f26 | 184 | senderr(ESRCH); |
e831d540 | 185 | switch(rtm->rtm_type) { |
e831d540 KS |
186 | |
187 | case RTM_GET: | |
4ba36fcc | 188 | report: |
e684b424 KS |
189 | dst = rt_key(rt); |
190 | gate = rt->rt_gateway; | |
191 | netmask = rt_mask(rt); | |
192 | genmask = rt->rt_genmask; | |
371d5f56 | 193 | if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { |
e684b424 KS |
194 | if (ifp = rt->rt_ifp) { |
195 | ifpaddr = ifp->if_addrlist->ifa_addr; | |
371d5f56 | 196 | ifaaddr = rt->rt_ifa->ifa_addr; |
e684b424 | 197 | rtm->rtm_index = ifp->if_index; |
371d5f56 | 198 | } else { |
e684b424 KS |
199 | ifpaddr = 0; |
200 | ifaaddr = 0; | |
201 | } | |
371d5f56 | 202 | } |
4ba36fcc | 203 | len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0, |
e684b424 | 204 | (struct walkarg *)0); |
e831d540 KS |
205 | if (len > rtm->rtm_msglen) { |
206 | struct rt_msghdr *new_rtm; | |
207 | R_Malloc(new_rtm, struct rt_msghdr *, len); | |
208 | if (new_rtm == 0) | |
a0d75f26 | 209 | senderr(ENOBUFS); |
e831d540 KS |
210 | Bcopy(rtm, new_rtm, rtm->rtm_msglen); |
211 | Free(rtm); rtm = new_rtm; | |
f3de5579 | 212 | } |
4ba36fcc | 213 | (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, |
e684b424 | 214 | (struct walkarg *)0); |
f3de5579 KS |
215 | rtm->rtm_flags = rt->rt_flags; |
216 | rtm->rtm_rmx = rt->rt_rmx; | |
48d4b313 | 217 | rtm->rtm_addrs = info.rti_addrs; |
e831d540 KS |
218 | break; |
219 | ||
220 | case RTM_CHANGE: | |
1a4f8a91 | 221 | if (gate && rt_setgate(rt, rt_key(rt), gate)) |
a0d75f26 | 222 | senderr(EDQUOT); |
d6bc9b28 KS |
223 | /* new gateway could require new ifaddr, ifp; |
224 | flags may also be different; ifp may be specified | |
225 | by ll sockaddr when protocol address is ambiguous */ | |
f157971f KS |
226 | if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && |
227 | (ifp = ifa->ifa_ifp)) | |
228 | ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, | |
229 | ifp); | |
230 | else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || | |
231 | (ifa = ifa_ifwithroute(rt->rt_flags, | |
232 | rt_key(rt), gate))) | |
233 | ifp = ifa->ifa_ifp; | |
d6bc9b28 | 234 | if (ifa) { |
f157971f KS |
235 | register struct ifaddr *oifa = rt->rt_ifa; |
236 | if (oifa != ifa) { | |
237 | if (oifa && oifa->ifa_rtrequest) | |
238 | oifa->ifa_rtrequest(RTM_DELETE, | |
239 | rt, gate); | |
222d6275 | 240 | IFAFREE(rt->rt_ifa); |
d6bc9b28 | 241 | rt->rt_ifa = ifa; |
222d6275 | 242 | ifa->ifa_refcnt++; |
f157971f | 243 | rt->rt_ifp = ifp; |
d6bc9b28 KS |
244 | } |
245 | } | |
f157971f KS |
246 | rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, |
247 | &rt->rt_rmx); | |
d6bc9b28 KS |
248 | if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) |
249 | rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate); | |
250 | if (genmask) | |
251 | rt->rt_genmask = genmask; | |
e831d540 KS |
252 | /* |
253 | * Fall into | |
254 | */ | |
79e0ea5d | 255 | case RTM_LOCK: |
0274ce41 | 256 | rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); |
79e0ea5d KS |
257 | rt->rt_rmx.rmx_locks |= |
258 | (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); | |
e831d540 | 259 | break; |
e831d540 | 260 | } |
e684b424 | 261 | break; |
e831d540 KS |
262 | |
263 | default: | |
a0d75f26 | 264 | senderr(EOPNOTSUPP); |
e831d540 KS |
265 | } |
266 | ||
267 | flush: | |
268 | if (rtm) { | |
269 | if (error) | |
270 | rtm->rtm_errno = error; | |
271 | else | |
272 | rtm->rtm_flags |= RTF_DONE; | |
273 | } | |
e831d540 KS |
274 | if (rt) |
275 | rtfree(rt); | |
2e5be88b KS |
276 | { |
277 | register struct rawcb *rp = 0; | |
278 | /* | |
279 | * Check to see if we don't want our own messages. | |
280 | */ | |
281 | if ((so->so_options & SO_USELOOPBACK) == 0) { | |
282 | if (route_cb.any_count <= 1) { | |
283 | if (rtm) | |
284 | Free(rtm); | |
285 | m_freem(m); | |
286 | return (error); | |
287 | } | |
288 | /* There is another listener, so construct message */ | |
289 | rp = sotorawcb(so); | |
290 | } | |
371d5f56 KS |
291 | if (rtm) { |
292 | m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); | |
32dfe9ab KS |
293 | Free(rtm); |
294 | } | |
2e5be88b KS |
295 | if (rp) |
296 | rp->rcb_proto.sp_family = 0; /* Avoid us */ | |
f3de5579 KS |
297 | if (dst) |
298 | route_proto.sp_protocol = dst->sa_family; | |
32dfe9ab | 299 | raw_input(m, &route_proto, &route_src, &route_dst); |
2e5be88b KS |
300 | if (rp) |
301 | rp->rcb_proto.sp_family = PF_ROUTE; | |
302 | } | |
e831d540 KS |
303 | return (error); |
304 | } | |
305 | ||
a15dacc5 | 306 | void |
d6bc9b28 | 307 | rt_setmetrics(which, in, out) |
79e0ea5d KS |
308 | u_long which; |
309 | register struct rt_metrics *in, *out; | |
310 | { | |
311 | #define metric(f, e) if (which & (f)) out->e = in->e; | |
312 | metric(RTV_RPIPE, rmx_recvpipe); | |
313 | metric(RTV_SPIPE, rmx_sendpipe); | |
314 | metric(RTV_SSTHRESH, rmx_ssthresh); | |
315 | metric(RTV_RTT, rmx_rtt); | |
316 | metric(RTV_RTTVAR, rmx_rttvar); | |
317 | metric(RTV_HOPCOUNT, rmx_hopcount); | |
318 | metric(RTV_MTU, rmx_mtu); | |
4784d9b2 | 319 | metric(RTV_EXPIRE, rmx_expire); |
79e0ea5d KS |
320 | #undef metric |
321 | } | |
322 | ||
e684b424 KS |
323 | #define ROUNDUP(a) \ |
324 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) | |
325 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) | |
326 | ||
327 | static void | |
328 | rt_xaddrs(cp, cplim, rtinfo) | |
329 | register caddr_t cp, cplim; | |
330 | register struct rt_addrinfo *rtinfo; | |
331 | { | |
332 | register struct sockaddr *sa; | |
333 | register int i; | |
334 | ||
335 | bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info)); | |
336 | for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { | |
337 | if ((rtinfo->rti_addrs & (1 << i)) == 0) | |
338 | continue; | |
339 | rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; | |
340 | ADVANCE(cp, sa); | |
341 | } | |
342 | } | |
00feb013 | 343 | |
e831d540 KS |
344 | /* |
345 | * Copy data from a buffer back into the indicated mbuf chain, | |
346 | * starting "off" bytes from the beginning, extending the mbuf | |
347 | * chain if necessary. | |
348 | */ | |
a15dacc5 | 349 | void |
e831d540 KS |
350 | m_copyback(m0, off, len, cp) |
351 | struct mbuf *m0; | |
352 | register int off; | |
353 | register int len; | |
354 | caddr_t cp; | |
e831d540 KS |
355 | { |
356 | register int mlen; | |
357 | register struct mbuf *m = m0, *n; | |
358 | int totlen = 0; | |
359 | ||
360 | if (m0 == 0) | |
361 | return; | |
31c32e48 | 362 | while (off > (mlen = m->m_len)) { |
e831d540 KS |
363 | off -= mlen; |
364 | totlen += mlen; | |
365 | if (m->m_next == 0) { | |
366 | n = m_getclr(M_DONTWAIT, m->m_type); | |
367 | if (n == 0) | |
368 | goto out; | |
369 | n->m_len = min(MLEN, len + off); | |
370 | m->m_next = n; | |
371 | } | |
372 | m = m->m_next; | |
373 | } | |
374 | while (len > 0) { | |
375 | mlen = min (m->m_len - off, len); | |
b72a6efb | 376 | bcopy(cp, off + mtod(m, caddr_t), (unsigned)mlen); |
e831d540 KS |
377 | cp += mlen; |
378 | len -= mlen; | |
379 | mlen += off; | |
380 | off = 0; | |
381 | totlen += mlen; | |
382 | if (len == 0) | |
383 | break; | |
384 | if (m->m_next == 0) { | |
385 | n = m_get(M_DONTWAIT, m->m_type); | |
386 | if (n == 0) | |
387 | break; | |
388 | n->m_len = min(MLEN, len); | |
389 | m->m_next = n; | |
390 | } | |
391 | m = m->m_next; | |
392 | } | |
393 | out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen)) | |
394 | m->m_pkthdr.len = totlen; | |
395 | } | |
396 | ||
e684b424 KS |
397 | static struct mbuf * |
398 | rt_msg1(type, rtinfo) | |
399 | int type; | |
400 | register struct rt_addrinfo *rtinfo; | |
e831d540 KS |
401 | { |
402 | register struct rt_msghdr *rtm; | |
403 | register struct mbuf *m; | |
e684b424 KS |
404 | register int i; |
405 | register struct sockaddr *sa; | |
406 | int len, dlen; | |
e831d540 | 407 | |
e831d540 KS |
408 | m = m_gethdr(M_DONTWAIT, MT_DATA); |
409 | if (m == 0) | |
e684b424 KS |
410 | return (m); |
411 | switch (type) { | |
412 | ||
413 | case RTM_DELADDR: | |
414 | case RTM_NEWADDR: | |
415 | len = sizeof(struct ifa_msghdr); | |
416 | break; | |
417 | ||
418 | case RTM_IFINFO: | |
419 | len = sizeof(struct if_msghdr); | |
420 | break; | |
421 | ||
422 | default: | |
423 | len = sizeof(struct rt_msghdr); | |
424 | } | |
425 | if (len > MHLEN) | |
426 | panic("rt_msg1"); | |
427 | m->m_pkthdr.len = m->m_len = len; | |
e831d540 KS |
428 | m->m_pkthdr.rcvif = 0; |
429 | rtm = mtod(m, struct rt_msghdr *); | |
e684b424 KS |
430 | bzero((caddr_t)rtm, len); |
431 | for (i = 0; i < RTAX_MAX; i++) { | |
432 | if ((sa = rtinfo->rti_info[i]) == NULL) | |
433 | continue; | |
434 | rtinfo->rti_addrs |= (1 << i); | |
435 | dlen = ROUNDUP(sa->sa_len); | |
436 | m_copyback(m, len, dlen, (caddr_t)sa); | |
437 | len += dlen; | |
438 | } | |
439 | if (m->m_pkthdr.len != len) { | |
440 | m_freem(m); | |
441 | return (NULL); | |
442 | } | |
e831d540 | 443 | rtm->rtm_msglen = len; |
79e0ea5d | 444 | rtm->rtm_version = RTM_VERSION; |
e831d540 | 445 | rtm->rtm_type = type; |
e684b424 KS |
446 | return (m); |
447 | } | |
448 | ||
449 | static int | |
450 | rt_msg2(type, rtinfo, cp, w) | |
451 | int type; | |
452 | register struct rt_addrinfo *rtinfo; | |
453 | caddr_t cp; | |
454 | struct walkarg *w; | |
455 | { | |
456 | register int i; | |
457 | int len, dlen, second_time = 0; | |
458 | caddr_t cp0; | |
459 | ||
460 | rtinfo->rti_addrs = 0; | |
461 | again: | |
462 | switch (type) { | |
463 | ||
464 | case RTM_DELADDR: | |
465 | case RTM_NEWADDR: | |
466 | len = sizeof(struct ifa_msghdr); | |
467 | break; | |
468 | ||
469 | case RTM_IFINFO: | |
470 | len = sizeof(struct if_msghdr); | |
471 | break; | |
472 | ||
473 | default: | |
474 | len = sizeof(struct rt_msghdr); | |
e831d540 | 475 | } |
e684b424 KS |
476 | if (cp0 = cp) |
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 | } | |
e831d540 | 489 | len += dlen; |
e831d540 | 490 | } |
e684b424 KS |
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 | if (rw->w_tmem = (caddr_t) | |
500 | malloc(len, M_RTABLE, M_NOWAIT)) | |
501 | rw->w_tmemsize = len; | |
502 | } | |
503 | if (rw->w_tmem) { | |
504 | cp = rw->w_tmem; | |
505 | second_time = 1; | |
506 | goto again; | |
507 | } else | |
508 | rw->w_where = 0; | |
509 | } | |
e831d540 | 510 | } |
e684b424 KS |
511 | if (cp) { |
512 | register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; | |
513 | ||
514 | rtm->rtm_version = RTM_VERSION; | |
515 | rtm->rtm_type = type; | |
516 | rtm->rtm_msglen = len; | |
e831d540 | 517 | } |
e684b424 KS |
518 | return (len); |
519 | } | |
520 | ||
521 | /* | |
522 | * This routine is called to generate a message from the routing | |
523 | * socket indicating that a redirect has occured, a routing lookup | |
524 | * has failed, or that a protocol has detected timeouts to a particular | |
525 | * destination. | |
526 | */ | |
a15dacc5 | 527 | void |
e684b424 KS |
528 | rt_missmsg(type, rtinfo, flags, error) |
529 | int type, flags, error; | |
530 | register struct rt_addrinfo *rtinfo; | |
531 | { | |
532 | register struct rt_msghdr *rtm; | |
533 | register struct mbuf *m; | |
e684b424 KS |
534 | struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; |
535 | ||
536 | if (route_cb.any_count == 0) | |
e831d540 | 537 | return; |
e684b424 KS |
538 | m = rt_msg1(type, rtinfo); |
539 | if (m == 0) | |
540 | return; | |
541 | rtm = mtod(m, struct rt_msghdr *); | |
542 | rtm->rtm_flags = RTF_DONE | flags; | |
b72a6efb | 543 | rtm->rtm_errno = error; |
e684b424 KS |
544 | rtm->rtm_addrs = rtinfo->rti_addrs; |
545 | route_proto.sp_protocol = sa ? sa->sa_family : 0; | |
e831d540 KS |
546 | raw_input(m, &route_proto, &route_src, &route_dst); |
547 | } | |
548 | ||
e684b424 KS |
549 | /* |
550 | * This routine is called to generate a message from the routing | |
551 | * socket indicating that the status of a network interface has changed. | |
552 | */ | |
a15dacc5 | 553 | void |
e684b424 KS |
554 | rt_ifmsg(ifp) |
555 | register struct ifnet *ifp; | |
556 | { | |
557 | register struct if_msghdr *ifm; | |
558 | struct mbuf *m; | |
559 | struct rt_addrinfo info; | |
560 | ||
561 | if (route_cb.any_count == 0) | |
562 | return; | |
563 | bzero((caddr_t)&info, sizeof(info)); | |
564 | m = rt_msg1(RTM_IFINFO, &info); | |
565 | if (m == 0) | |
566 | return; | |
567 | ifm = mtod(m, struct if_msghdr *); | |
568 | ifm->ifm_index = ifp->if_index; | |
569 | ifm->ifm_flags = ifp->if_flags; | |
570 | ifm->ifm_data = ifp->if_data; | |
571 | ifm->ifm_addrs = 0; | |
572 | route_proto.sp_protocol = 0; | |
573 | raw_input(m, &route_proto, &route_src, &route_dst); | |
574 | } | |
575 | ||
576 | /* | |
577 | * This is called to generate messages from the routing socket | |
578 | * indicating a network interface has had addresses associated with it. | |
579 | * if we ever reverse the logic and replace messages TO the routing | |
580 | * socket indicate a request to configure interfaces, then it will | |
581 | * be unnecessary as the routing socket will automatically generate | |
582 | * copies of it. | |
583 | */ | |
a15dacc5 | 584 | void |
e684b424 KS |
585 | rt_newaddrmsg(cmd, ifa, error, rt) |
586 | int cmd, error; | |
587 | register struct ifaddr *ifa; | |
588 | register struct rtentry *rt; | |
589 | { | |
590 | struct rt_addrinfo info; | |
591 | struct sockaddr *sa; | |
592 | int pass; | |
593 | struct mbuf *m; | |
594 | struct ifnet *ifp = ifa->ifa_ifp; | |
595 | ||
596 | if (route_cb.any_count == 0) | |
597 | return; | |
598 | for (pass = 1; pass < 3; pass++) { | |
599 | bzero((caddr_t)&info, sizeof(info)); | |
600 | if ((cmd == RTM_ADD && pass == 1) || | |
601 | (cmd == RTM_DELETE && pass == 2)) { | |
602 | register struct ifa_msghdr *ifam; | |
603 | int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; | |
604 | ||
605 | ifaaddr = sa = ifa->ifa_addr; | |
606 | ifpaddr = ifp->if_addrlist->ifa_addr; | |
607 | netmask = ifa->ifa_netmask; | |
608 | brdaddr = ifa->ifa_dstaddr; | |
609 | if ((m = rt_msg1(ncmd, &info)) == NULL) | |
610 | continue; | |
611 | ifam = mtod(m, struct ifa_msghdr *); | |
612 | ifam->ifam_index = ifp->if_index; | |
613 | ifam->ifam_metric = ifa->ifa_metric; | |
7c4c8224 | 614 | ifam->ifam_flags = ifa->ifa_flags; |
e684b424 KS |
615 | ifam->ifam_addrs = info.rti_addrs; |
616 | } | |
617 | if ((cmd == RTM_ADD && pass == 2) || | |
618 | (cmd == RTM_DELETE && pass == 1)) { | |
619 | register struct rt_msghdr *rtm; | |
620 | ||
621 | if (rt == 0) | |
622 | continue; | |
623 | netmask = rt_mask(rt); | |
624 | dst = sa = rt_key(rt); | |
625 | gate = rt->rt_gateway; | |
626 | if ((m = rt_msg1(cmd, &info)) == NULL) | |
627 | continue; | |
628 | rtm = mtod(m, struct rt_msghdr *); | |
629 | rtm->rtm_index = ifp->if_index; | |
630 | rtm->rtm_flags |= rt->rt_flags; | |
631 | rtm->rtm_errno = error; | |
632 | rtm->rtm_addrs = info.rti_addrs; | |
633 | } | |
634 | route_proto.sp_protocol = sa ? sa->sa_family : 0; | |
635 | raw_input(m, &route_proto, &route_src, &route_dst); | |
636 | } | |
637 | } | |
638 | ||
a0d75f26 | 639 | /* |
ee0f9e0d | 640 | * This is used in dumping the kernel table via sysctl(). |
a0d75f26 | 641 | */ |
a15dacc5 | 642 | int |
ee0f9e0d | 643 | sysctl_dumpentry(rn, w) |
a0d75f26 KS |
644 | struct radix_node *rn; |
645 | register struct walkarg *w; | |
646 | { | |
a0d75f26 | 647 | register struct rtentry *rt = (struct rtentry *)rn; |
67e8af50 | 648 | int error = 0, size; |
e684b424 | 649 | struct rt_addrinfo info; |
a0d75f26 | 650 | |
ee0f9e0d | 651 | if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) |
1f29be1c | 652 | return 0; |
e684b424 KS |
653 | bzero((caddr_t)&info, sizeof(info)); |
654 | dst = rt_key(rt); | |
655 | gate = rt->rt_gateway; | |
656 | netmask = rt_mask(rt); | |
657 | genmask = rt->rt_genmask; | |
658 | size = rt_msg2(RTM_GET, &info, 0, w); | |
659 | if (w->w_where && w->w_tmem) { | |
660 | register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; | |
661 | ||
662 | rtm->rtm_flags = rt->rt_flags; | |
663 | rtm->rtm_use = rt->rt_use; | |
664 | rtm->rtm_rmx = rt->rt_rmx; | |
665 | rtm->rtm_index = rt->rt_ifp->if_index; | |
666 | rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; | |
667 | rtm->rtm_addrs = info.rti_addrs; | |
668 | if (error = copyout((caddr_t)rtm, w->w_where, size)) | |
669 | w->w_where = NULL; | |
670 | else | |
671 | w->w_where += size; | |
672 | } | |
673 | return (error); | |
674 | } | |
675 | ||
a15dacc5 | 676 | int |
ee0f9e0d | 677 | sysctl_iflist(af, w) |
e684b424 KS |
678 | int af; |
679 | register struct walkarg *w; | |
680 | { | |
681 | register struct ifnet *ifp; | |
682 | register struct ifaddr *ifa; | |
683 | struct rt_addrinfo info; | |
e684b424 KS |
684 | int len, error = 0; |
685 | ||
686 | bzero((caddr_t)&info, sizeof(info)); | |
687 | for (ifp = ifnet; ifp; ifp = ifp->if_next) { | |
f21e4b71 KS |
688 | if (w->w_arg && w->w_arg != ifp->if_index) |
689 | continue; | |
e684b424 KS |
690 | ifa = ifp->if_addrlist; |
691 | ifpaddr = ifa->ifa_addr; | |
692 | len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w); | |
693 | ifpaddr = 0; | |
694 | if (w->w_where && w->w_tmem) { | |
695 | register struct if_msghdr *ifm; | |
696 | ||
697 | ifm = (struct if_msghdr *)w->w_tmem; | |
698 | ifm->ifm_index = ifp->if_index; | |
699 | ifm->ifm_flags = ifp->if_flags; | |
700 | ifm->ifm_data = ifp->if_data; | |
701 | ifm->ifm_addrs = info.rti_addrs; | |
702 | if (error = copyout((caddr_t)ifm, w->w_where, len)) | |
703 | return (error); | |
704 | w->w_where += len; | |
705 | } | |
706 | while (ifa = ifa->ifa_next) { | |
f21e4b71 KS |
707 | if (af && af != ifa->ifa_addr->sa_family) |
708 | continue; | |
e684b424 KS |
709 | ifaaddr = ifa->ifa_addr; |
710 | netmask = ifa->ifa_netmask; | |
711 | brdaddr = ifa->ifa_dstaddr; | |
712 | len = rt_msg2(RTM_NEWADDR, &info, 0, w); | |
713 | if (w->w_where && w->w_tmem) { | |
714 | register struct ifa_msghdr *ifam; | |
715 | ||
716 | ifam = (struct ifa_msghdr *)w->w_tmem; | |
717 | ifam->ifam_index = ifa->ifa_ifp->if_index; | |
718 | ifam->ifam_flags = ifa->ifa_flags; | |
719 | ifam->ifam_metric = ifa->ifa_metric; | |
720 | ifam->ifam_addrs = info.rti_addrs; | |
721 | if (error = copyout(w->w_tmem, w->w_where, len)) | |
722 | return (error); | |
723 | w->w_where += len; | |
724 | } | |
e684b424 | 725 | } |
f21e4b71 | 726 | ifaaddr = netmask = brdaddr = 0; |
a0d75f26 | 727 | } |
a0d75f26 | 728 | return (0); |
a0d75f26 KS |
729 | } |
730 | ||
a15dacc5 | 731 | int |
ee0f9e0d KM |
732 | sysctl_rtable(name, namelen, where, given, new, newlen) |
733 | int *name; | |
734 | int namelen; | |
a0d75f26 | 735 | caddr_t where; |
8d1b82ff | 736 | size_t *given; |
ee0f9e0d | 737 | caddr_t *new; |
8d1b82ff | 738 | size_t newlen; |
a0d75f26 KS |
739 | { |
740 | register struct radix_node_head *rnh; | |
e684b424 | 741 | int i, s, error = EINVAL; |
ee0f9e0d | 742 | u_char af; |
a0d75f26 KS |
743 | struct walkarg w; |
744 | ||
ee0f9e0d KM |
745 | if (new) |
746 | return (EPERM); | |
747 | if (namelen != 3) | |
748 | return (EINVAL); | |
749 | af = name[0]; | |
a0d75f26 | 750 | Bzero(&w, sizeof(w)); |
ee0f9e0d KM |
751 | w.w_where = where; |
752 | w.w_given = *given; | |
a0d75f26 | 753 | w.w_needed = 0 - w.w_given; |
ee0f9e0d KM |
754 | w.w_op = name[1]; |
755 | w.w_arg = name[2]; | |
a0d75f26 KS |
756 | |
757 | s = splnet(); | |
ee0f9e0d | 758 | switch (w.w_op) { |
e684b424 | 759 | |
ee0f9e0d KM |
760 | case NET_RT_DUMP: |
761 | case NET_RT_FLAGS: | |
e684b424 KS |
762 | for (i = 1; i <= AF_MAX; i++) |
763 | if ((rnh = rt_tables[i]) && (af == 0 || af == i) && | |
d2ca79ee KS |
764 | (error = rnh->rnh_walktree(rnh, |
765 | sysctl_dumpentry, &w))) | |
e684b424 KS |
766 | break; |
767 | break; | |
768 | ||
ee0f9e0d KM |
769 | case NET_RT_IFLIST: |
770 | error = sysctl_iflist(af, &w); | |
a0d75f26 | 771 | } |
e684b424 KS |
772 | splx(s); |
773 | if (w.w_tmem) | |
774 | free(w.w_tmem, M_RTABLE); | |
a0d75f26 | 775 | w.w_needed += w.w_given; |
ee0f9e0d | 776 | if (where) { |
a0d75f26 | 777 | *given = w.w_where - where; |
ee0f9e0d KM |
778 | if (*given < w.w_needed) |
779 | return (ENOMEM); | |
780 | } else { | |
781 | *given = (11 * w.w_needed) / 10; | |
782 | } | |
a0d75f26 KS |
783 | return (error); |
784 | } | |
785 | ||
e831d540 KS |
786 | /* |
787 | * Definitions of protocols supported in the ROUTE domain. | |
788 | */ | |
789 | ||
e831d540 KS |
790 | extern struct domain routedomain; /* or at least forward */ |
791 | ||
792 | struct protosw routesw[] = { | |
793 | { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR, | |
794 | raw_input, route_output, raw_ctlinput, 0, | |
795 | route_usrreq, | |
796 | raw_init, 0, 0, 0, | |
ee0f9e0d | 797 | sysctl_rtable, |
e831d540 KS |
798 | } |
799 | }; | |
800 | ||
e831d540 | 801 | struct domain routedomain = |
5c48f39f | 802 | { PF_ROUTE, "route", route_init, 0, 0, |
e831d540 | 803 | routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] }; |