Annotation of src/sys/netinet/raw_ip.c, Revision 1.67
1.67 ! matt 1: /* $NetBSD: raw_ip.c,v 1.66 2003/01/30 23:43:33 thorpej Exp $ */
1.43 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
1.61 itojun 6: *
1.43 itojun 7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the project nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
1.61 itojun 18: *
1.43 itojun 19: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.14 cgd 31:
1.1 cgd 32: /*
1.13 mycroft 33: * Copyright (c) 1982, 1986, 1988, 1993
34: * The Regents of the University of California. All rights reserved.
1.1 cgd 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. All advertising materials mentioning features or use of this software
45: * must display the following acknowledgement:
46: * This product includes software developed by the University of
47: * California, Berkeley and its contributors.
48: * 4. Neither the name of the University nor the names of its contributors
49: * may be used to endorse or promote products derived from this software
50: * without specific prior written permission.
51: *
52: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62: * SUCH DAMAGE.
63: *
1.39 thorpej 64: * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95
1.1 cgd 65: */
1.59 lukem 66:
67: #include <sys/cdefs.h>
1.67 ! matt 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.66 2003/01/30 23:43:33 thorpej Exp $");
1.40 scottr 69:
1.45 thorpej 70: #include "opt_ipsec.h"
1.40 scottr 71: #include "opt_mrouting.h"
1.1 cgd 72:
1.7 mycroft 73: #include <sys/param.h>
74: #include <sys/malloc.h>
75: #include <sys/mbuf.h>
76: #include <sys/socket.h>
77: #include <sys/protosw.h>
78: #include <sys/socketvar.h>
79: #include <sys/errno.h>
1.13 mycroft 80: #include <sys/systm.h>
1.26 mycroft 81: #include <sys/proc.h>
1.1 cgd 82:
1.7 mycroft 83: #include <net/if.h>
84: #include <net/route.h>
1.1 cgd 85:
1.7 mycroft 86: #include <netinet/in.h>
87: #include <netinet/in_systm.h>
88: #include <netinet/ip.h>
89: #include <netinet/ip_var.h>
1.13 mycroft 90: #include <netinet/ip_mroute.h>
1.44 darrenr 91: #include <netinet/ip_icmp.h>
1.7 mycroft 92: #include <netinet/in_pcb.h>
1.24 christos 93: #include <netinet/in_var.h>
94:
95: #include <machine/stdarg.h>
1.13 mycroft 96:
1.43 itojun 97: #ifdef IPSEC
98: #include <netinet6/ipsec.h>
99: #endif /*IPSEC*/
100:
1.20 mycroft 101: struct inpcbtable rawcbtable;
1.30 pk 102:
1.60 itojun 103: int rip_pcbnotify __P((struct inpcbtable *, struct in_addr,
104: struct in_addr, int, int, void (*) __P((struct inpcb *, int))));
1.30 pk 105: int rip_bind __P((struct inpcb *, struct mbuf *));
106: int rip_connect __P((struct inpcb *, struct mbuf *));
107: void rip_disconnect __P((struct inpcb *));
1.13 mycroft 108:
109: /*
110: * Nominal space allocated to a raw ip socket.
111: */
112: #define RIPSNDQ 8192
113: #define RIPRCVQ 8192
1.1 cgd 114:
115: /*
116: * Raw interface to IP protocol.
117: */
1.13 mycroft 118:
119: /*
120: * Initialize raw connection block q.
121: */
122: void
123: rip_init()
124: {
125:
1.33 mycroft 126: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 127: }
128:
1.1 cgd 129: /*
130: * Setup generic address and protocol structures
131: * for raw_input routine, then pass them along with
132: * mbuf chain.
133: */
1.9 mycroft 134: void
1.24 christos 135: #if __STDC__
136: rip_input(struct mbuf *m, ...)
137: #else
138: rip_input(m, va_alist)
1.1 cgd 139: struct mbuf *m;
1.24 christos 140: va_dcl
141: #endif
1.1 cgd 142: {
1.63 simonb 143: int proto;
1.53 augustss 144: struct ip *ip = mtod(m, struct ip *);
145: struct inpcb *inp;
1.36 thorpej 146: struct inpcb *last = 0;
147: struct mbuf *opts = 0;
1.32 mycroft 148: struct sockaddr_in ripsrc;
1.43 itojun 149: va_list ap;
150:
151: va_start(ap, m);
1.64 simonb 152: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 153: proto = va_arg(ap, int);
154: va_end(ap);
1.1 cgd 155:
1.32 mycroft 156: ripsrc.sin_family = AF_INET;
157: ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1 cgd 158: ripsrc.sin_addr = ip->ip_src;
1.34 mycroft 159: ripsrc.sin_port = 0;
160: bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42 thorpej 161:
162: /*
163: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 164: * XXX to have the header length subtracted, and in host order.
165: * XXX ip_off is also expected to be host order.
1.42 thorpej 166: */
1.62 itojun 167: ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2);
168: NTOHS(ip->ip_off);
1.32 mycroft 169:
1.58 matt 170: CIRCLEQ_FOREACH(inp, &rawcbtable.inpt_queue, inp_queue) {
1.43 itojun 171: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 172: continue;
1.32 mycroft 173: if (!in_nullhost(inp->inp_laddr) &&
174: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 175: continue;
1.32 mycroft 176: if (!in_nullhost(inp->inp_faddr) &&
177: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 178: continue;
179: if (last) {
180: struct mbuf *n;
1.55 itojun 181:
182: #ifdef IPSEC
183: /* check AH/ESP integrity. */
184: if (ipsec4_in_reject_so(m, last->inp_socket)) {
185: ipsecstat.in_polvio++;
186: /* do not inject data to pcb */
187: } else
188: #endif /*IPSEC*/
1.24 christos 189: if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36 thorpej 190: if (last->inp_flags & INP_CONTROLOPTS ||
191: last->inp_socket->so_options & SO_TIMESTAMP)
192: ip_savecontrol(last, &opts, ip, n);
193: if (sbappendaddr(&last->inp_socket->so_rcv,
194: sintosa(&ripsrc), n, opts) == 0) {
1.13 mycroft 195: /* should notify about lost packet */
196: m_freem(n);
1.36 thorpej 197: if (opts)
198: m_freem(opts);
199: } else
200: sorwakeup(last->inp_socket);
1.41 thorpej 201: opts = NULL;
1.13 mycroft 202: }
203: }
1.36 thorpej 204: last = inp;
1.13 mycroft 205: }
1.55 itojun 206: #ifdef IPSEC
207: /* check AH/ESP integrity. */
208: if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
209: m_freem(m);
210: ipsecstat.in_polvio++;
211: ipstat.ips_delivered--;
212: /* do not inject data to pcb */
213: } else
214: #endif /*IPSEC*/
1.13 mycroft 215: if (last) {
1.36 thorpej 216: if (last->inp_flags & INP_CONTROLOPTS ||
217: last->inp_socket->so_options & SO_TIMESTAMP)
218: ip_savecontrol(last, &opts, ip, m);
219: if (sbappendaddr(&last->inp_socket->so_rcv,
220: sintosa(&ripsrc), m, opts) == 0) {
1.13 mycroft 221: m_freem(m);
1.36 thorpej 222: if (opts)
223: m_freem(opts);
224: } else
225: sorwakeup(last->inp_socket);
1.13 mycroft 226: } else {
1.44 darrenr 227: if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.47 itojun 228: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
229: 0, 0);
1.44 darrenr 230: ipstat.ips_noproto++;
231: ipstat.ips_delivered--;
232: } else
233: m_freem(m);
1.1 cgd 234: }
1.43 itojun 235: return;
1.60 itojun 236: }
237:
238: int
239: rip_pcbnotify(table, faddr, laddr, proto, errno, notify)
240: struct inpcbtable *table;
241: struct in_addr faddr, laddr;
242: int proto;
243: int errno;
244: void (*notify) __P((struct inpcb *, int));
245: {
246: struct inpcb *inp, *ninp;
247: int nmatch;
248:
249: nmatch = 0;
250: for (inp = CIRCLEQ_FIRST(&table->inpt_queue);
251: inp != (struct inpcb *)&table->inpt_queue;
252: inp = ninp) {
253: ninp = inp->inp_queue.cqe_next;
254: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
255: continue;
256: if (in_hosteq(inp->inp_faddr, faddr) &&
257: in_hosteq(inp->inp_laddr, laddr)) {
258: (*notify)(inp, errno);
259: nmatch++;
260: }
261: }
262:
263: return nmatch;
264: }
265:
266: void *
267: rip_ctlinput(cmd, sa, v)
268: int cmd;
269: struct sockaddr *sa;
270: void *v;
271: {
272: struct ip *ip = v;
273: void (*notify) __P((struct inpcb *, int)) = in_rtchange;
274: int errno;
275:
276: if (sa->sa_family != AF_INET ||
277: sa->sa_len != sizeof(struct sockaddr_in))
278: return NULL;
279: if ((unsigned)cmd >= PRC_NCMDS)
280: return NULL;
281: errno = inetctlerrmap[cmd];
282: if (PRC_IS_REDIRECT(cmd))
283: notify = in_rtchange, ip = 0;
284: else if (cmd == PRC_HOSTDEAD)
285: ip = 0;
286: else if (errno == 0)
287: return NULL;
288: if (ip) {
289: rip_pcbnotify(&rawcbtable, satosin(sa)->sin_addr,
290: ip->ip_src, ip->ip_p, errno, notify);
291:
292: /* XXX mapped address case */
293: } else
294: in_pcbnotifyall(&rawcbtable, satosin(sa)->sin_addr, errno,
295: notify);
296: return NULL;
1.1 cgd 297: }
298:
299: /*
300: * Generate IP header and pass packet to ip_output.
301: * Tack on options user may have setup with control call.
302: */
1.9 mycroft 303: int
1.24 christos 304: #if __STDC__
305: rip_output(struct mbuf *m, ...)
306: #else
307: rip_output(m, va_alist)
308: struct mbuf *m;
309: va_dcl
310: #endif
311: {
1.53 augustss 312: struct inpcb *inp;
313: struct ip *ip;
1.10 mycroft 314: struct mbuf *opts;
1.24 christos 315: int flags;
316: va_list ap;
317:
318: va_start(ap, m);
1.27 mycroft 319: inp = va_arg(ap, struct inpcb *);
1.24 christos 320: va_end(ap);
321:
1.27 mycroft 322: flags =
1.37 matt 323: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
324: | IP_RETURNMTU;
1.1 cgd 325:
326: /*
327: * If the user handed us a complete IP packet, use it.
328: * Otherwise, allocate an mbuf for a header and fill it in.
329: */
1.13 mycroft 330: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 331: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
332: m_freem(m);
333: return (EMSGSIZE);
334: }
1.1 cgd 335: M_PREPEND(m, sizeof(struct ip), M_WAIT);
336: ip = mtod(m, struct ip *);
337: ip->ip_tos = 0;
1.62 itojun 338: ip->ip_off = htons(0);
1.13 mycroft 339: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 340: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 341: ip->ip_src = inp->inp_laddr;
1.27 mycroft 342: ip->ip_dst = inp->inp_faddr;
1.1 cgd 343: ip->ip_ttl = MAXTTL;
1.13 mycroft 344: opts = inp->inp_options;
345: } else {
1.35 thorpej 346: if (m->m_pkthdr.len > IP_MAXPACKET) {
347: m_freem(m);
348: return (EMSGSIZE);
349: }
1.13 mycroft 350: ip = mtod(m, struct ip *);
1.65 thorpej 351:
352: /*
353: * If the mbuf is read-only, we need to allocate
354: * a new mbuf for the header, since we need to
355: * modify the header.
356: */
357: if (M_READONLY(m)) {
358: int hlen = ip->ip_hl << 2;
359:
360: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
361: if (m == NULL)
362: return (ENOMEM); /* XXX */
363: ip = mtod(m, struct ip *);
364: }
365:
1.62 itojun 366: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 367: if (m->m_pkthdr.len != ip->ip_len) {
368: m_freem(m);
369: return (EINVAL);
370: }
1.62 itojun 371: HTONS(ip->ip_len);
372: HTONS(ip->ip_off);
1.13 mycroft 373: if (ip->ip_id == 0)
374: ip->ip_id = htons(ip_id++);
375: opts = NULL;
376: /* XXX prevent ip_output from overwriting header fields */
377: flags |= IP_RAWOUTPUT;
378: ipstat.ips_rawout++;
1.1 cgd 379: }
1.43 itojun 380: #ifdef IPSEC
1.54 itojun 381: if (ipsec_setsocket(m, inp->inp_socket) != 0) {
382: m_freem(m);
383: return ENOBUFS;
384: }
1.43 itojun 385: #endif /*IPSEC*/
1.62 itojun 386: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
387: &inp->inp_errormtu));
1.1 cgd 388: }
389:
390: /*
391: * Raw IP socket option processing.
392: */
1.9 mycroft 393: int
1.1 cgd 394: rip_ctloutput(op, so, level, optname, m)
395: int op;
396: struct socket *so;
397: int level, optname;
398: struct mbuf **m;
399: {
1.53 augustss 400: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 401: int error = 0;
1.1 cgd 402:
1.15 mycroft 403: if (level != IPPROTO_IP) {
1.31 mycroft 404: error = ENOPROTOOPT;
405: if (op == PRCO_SETOPT && *m != 0)
406: (void) m_free(*m);
407: } else switch (op) {
408:
409: case PRCO_SETOPT:
410: switch (optname) {
411: case IP_HDRINCL:
412: if (*m == 0 || (*m)->m_len < sizeof (int))
413: error = EINVAL;
414: else {
1.13 mycroft 415: if (*mtod(*m, int *))
416: inp->inp_flags |= INP_HDRINCL;
417: else
418: inp->inp_flags &= ~INP_HDRINCL;
419: }
1.31 mycroft 420: if (*m != 0)
421: (void) m_free(*m);
422: break;
423:
424: #ifdef MROUTING
425: case MRT_INIT:
426: case MRT_DONE:
427: case MRT_ADD_VIF:
428: case MRT_DEL_VIF:
429: case MRT_ADD_MFC:
430: case MRT_DEL_MFC:
431: case MRT_ASSERT:
432: error = ip_mrouter_set(so, optname, m);
433: break;
434: #endif
435:
436: default:
437: error = ip_ctloutput(op, so, level, optname, m);
438: break;
1.13 mycroft 439: }
440: break;
1.1 cgd 441:
1.31 mycroft 442: case PRCO_GETOPT:
443: switch (optname) {
444: case IP_HDRINCL:
1.66 thorpej 445: *m = m_get(M_WAIT, MT_SOOPTS);
1.67 ! matt 446: MCLAIM((*m), so->so_mowner);
1.31 mycroft 447: (*m)->m_len = sizeof (int);
448: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
449: break;
450:
1.6 hpeyerl 451: #ifdef MROUTING
1.31 mycroft 452: case MRT_VERSION:
453: case MRT_ASSERT:
454: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 455: break;
1.31 mycroft 456: #endif
457:
1.18 mycroft 458: default:
1.31 mycroft 459: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 460: break;
461: }
1.31 mycroft 462: break;
1.1 cgd 463: }
1.31 mycroft 464: return (error);
1.1 cgd 465: }
466:
1.27 mycroft 467: int
1.29 mycroft 468: rip_bind(inp, nam)
469: struct inpcb *inp;
470: struct mbuf *nam;
471: {
472: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
473:
474: if (nam->m_len != sizeof(*addr))
475: return (EINVAL);
1.58 matt 476: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 477: return (EADDRNOTAVAIL);
478: if (addr->sin_family != AF_INET &&
479: addr->sin_family != AF_IMPLINK)
480: return (EAFNOSUPPORT);
1.32 mycroft 481: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 482: ifa_ifwithaddr(sintosa(addr)) == 0)
483: return (EADDRNOTAVAIL);
484: inp->inp_laddr = addr->sin_addr;
485: return (0);
486: }
487:
488: int
1.27 mycroft 489: rip_connect(inp, nam)
490: struct inpcb *inp;
491: struct mbuf *nam;
492: {
493: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
494:
495: if (nam->m_len != sizeof(*addr))
496: return (EINVAL);
1.58 matt 497: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 498: return (EADDRNOTAVAIL);
499: if (addr->sin_family != AF_INET &&
500: addr->sin_family != AF_IMPLINK)
501: return (EAFNOSUPPORT);
502: inp->inp_faddr = addr->sin_addr;
503: return (0);
504: }
505:
506: void
507: rip_disconnect(inp)
508: struct inpcb *inp;
509: {
510:
1.32 mycroft 511: inp->inp_faddr = zeroin_addr;
1.27 mycroft 512: }
513:
1.13 mycroft 514: u_long rip_sendspace = RIPSNDQ;
515: u_long rip_recvspace = RIPRCVQ;
516:
1.1 cgd 517: /*ARGSUSED*/
1.9 mycroft 518: int
1.26 mycroft 519: rip_usrreq(so, req, m, nam, control, p)
1.53 augustss 520: struct socket *so;
1.1 cgd 521: int req;
1.2 cgd 522: struct mbuf *m, *nam, *control;
1.26 mycroft 523: struct proc *p;
1.1 cgd 524: {
1.53 augustss 525: struct inpcb *inp;
1.27 mycroft 526: int s;
1.53 augustss 527: int error = 0;
1.13 mycroft 528: #ifdef MROUTING
1.6 hpeyerl 529: extern struct socket *ip_mrouter;
530: #endif
1.27 mycroft 531:
1.22 pk 532: if (req == PRU_CONTROL)
533: return (in_control(so, (long)m, (caddr_t)nam,
1.26 mycroft 534: (struct ifnet *)control, p));
1.49 thorpej 535:
1.50 thorpej 536: if (req == PRU_PURGEIF) {
1.56 itojun 537: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 538: in_purgeif((struct ifnet *)control);
539: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49 thorpej 540: return (0);
541: }
1.22 pk 542:
1.27 mycroft 543: s = splsoftnet();
544: inp = sotoinpcb(so);
1.28 mycroft 545: #ifdef DIAGNOSTIC
546: if (req != PRU_SEND && req != PRU_SENDOOB && control)
547: panic("rip_usrreq: unexpected control mbuf");
548: #endif
1.27 mycroft 549: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 550: error = EINVAL;
551: goto release;
552: }
553:
1.1 cgd 554: switch (req) {
555:
556: case PRU_ATTACH:
1.27 mycroft 557: if (inp != 0) {
558: error = EISCONN;
559: break;
560: }
1.26 mycroft 561: if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13 mycroft 562: error = EACCES;
563: break;
564: }
1.27 mycroft 565: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
566: error = soreserve(so, rip_sendspace, rip_recvspace);
567: if (error)
568: break;
569: }
570: error = in_pcballoc(so, &rawcbtable);
571: if (error)
1.13 mycroft 572: break;
1.27 mycroft 573: inp = sotoinpcb(so);
1.17 cgd 574: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 575: break;
576:
577: case PRU_DETACH:
1.13 mycroft 578: #ifdef MROUTING
1.6 hpeyerl 579: if (so == ip_mrouter)
580: ip_mrouter_done();
581: #endif
1.13 mycroft 582: in_pcbdetach(inp);
1.1 cgd 583: break;
584:
585: case PRU_BIND:
1.29 mycroft 586: error = rip_bind(inp, nam);
1.27 mycroft 587: break;
588:
589: case PRU_LISTEN:
590: error = EOPNOTSUPP;
591: break;
592:
593: case PRU_CONNECT:
594: error = rip_connect(inp, nam);
595: if (error)
1.13 mycroft 596: break;
1.1 cgd 597: soisconnected(so);
1.13 mycroft 598: break;
599:
600: case PRU_CONNECT2:
601: error = EOPNOTSUPP;
602: break;
603:
1.27 mycroft 604: case PRU_DISCONNECT:
605: soisdisconnected(so);
606: rip_disconnect(inp);
607: break;
608:
1.13 mycroft 609: /*
610: * Mark the connection as being incapable of further input.
611: */
612: case PRU_SHUTDOWN:
613: socantsendmore(so);
614: break;
615:
1.27 mycroft 616: case PRU_RCVD:
617: error = EOPNOTSUPP;
618: break;
619:
1.13 mycroft 620: /*
621: * Ship a packet out. The appropriate raw output
622: * routine handles any massaging necessary.
623: */
624: case PRU_SEND:
1.28 mycroft 625: if (control && control->m_len) {
626: m_freem(control);
627: m_freem(m);
628: error = EINVAL;
629: break;
630: }
631: {
1.27 mycroft 632: if (nam) {
633: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 634: error = EISCONN;
1.28 mycroft 635: goto die;
1.13 mycroft 636: }
1.27 mycroft 637: error = rip_connect(inp, nam);
638: if (error) {
1.28 mycroft 639: die:
1.27 mycroft 640: m_freem(m);
641: break;
642: }
1.13 mycroft 643: } else {
1.27 mycroft 644: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 645: error = ENOTCONN;
1.28 mycroft 646: goto die;
1.13 mycroft 647: }
648: }
1.27 mycroft 649: error = rip_output(m, inp);
650: if (nam)
651: rip_disconnect(inp);
1.28 mycroft 652: }
1.13 mycroft 653: break;
654:
655: case PRU_SENSE:
656: /*
657: * stat: don't bother with a blocksize.
658: */
1.27 mycroft 659: splx(s);
1.1 cgd 660: return (0);
1.13 mycroft 661:
662: case PRU_RCVOOB:
1.27 mycroft 663: error = EOPNOTSUPP;
664: break;
665:
1.13 mycroft 666: case PRU_SENDOOB:
1.28 mycroft 667: m_freem(control);
1.27 mycroft 668: m_freem(m);
1.13 mycroft 669: error = EOPNOTSUPP;
670: break;
671:
672: case PRU_SOCKADDR:
673: in_setsockaddr(inp, nam);
674: break;
675:
676: case PRU_PEERADDR:
677: in_setpeeraddr(inp, nam);
678: break;
679:
680: default:
681: panic("rip_usrreq");
1.1 cgd 682: }
1.27 mycroft 683:
1.22 pk 684: release:
1.27 mycroft 685: splx(s);
1.1 cgd 686: return (error);
687: }
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