Annotation of src/sys/netinet/raw_ip.c, Revision 1.55.2.6
1.55.2.6! thorpej 1: /* $NetBSD: raw_ip.c,v 1.55.2.5 2002/08/27 23:48:03 nathanw Exp $ */
1.43 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
1.55.2.4 nathanw 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.
1.55.2.4 nathanw 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: */
1.40 scottr 66:
1.55.2.2 nathanw 67: #include <sys/cdefs.h>
1.55.2.6! thorpej 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.55.2.5 2002/08/27 23:48:03 nathanw Exp $");
1.55.2.2 nathanw 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:
1.55.2.3 nathanw 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: {
1.55.2.6! thorpej 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);
1.55.2.6! thorpej 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
1.55.2.5 nathanw 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: */
1.55.2.5 nathanw 167: ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2);
168: NTOHS(ip->ip_off);
1.32 mycroft 169:
1.55.2.2 nathanw 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;
1.55.2.3 nathanw 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;
1.55.2.5 nathanw 338: ip->ip_off = htons(0);
1.13 mycroft 339: ip->ip_p = inp->inp_ip.ip_p;
1.55.2.5 nathanw 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 *);
1.55.2.6! 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:
1.55.2.5 nathanw 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: }
1.55.2.5 nathanw 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*/
1.55.2.5 nathanw 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:
445: *m = m_get(M_WAIT, M_SOOPTS);
446: (*m)->m_len = sizeof (int);
447: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
448: break;
449:
1.6 hpeyerl 450: #ifdef MROUTING
1.31 mycroft 451: case MRT_VERSION:
452: case MRT_ASSERT:
453: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 454: break;
1.31 mycroft 455: #endif
456:
1.18 mycroft 457: default:
1.31 mycroft 458: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 459: break;
460: }
1.31 mycroft 461: break;
1.1 cgd 462: }
1.31 mycroft 463: return (error);
1.1 cgd 464: }
465:
1.27 mycroft 466: int
1.29 mycroft 467: rip_bind(inp, nam)
468: struct inpcb *inp;
469: struct mbuf *nam;
470: {
471: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
472:
473: if (nam->m_len != sizeof(*addr))
474: return (EINVAL);
1.55.2.2 nathanw 475: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 476: return (EADDRNOTAVAIL);
477: if (addr->sin_family != AF_INET &&
478: addr->sin_family != AF_IMPLINK)
479: return (EAFNOSUPPORT);
1.32 mycroft 480: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 481: ifa_ifwithaddr(sintosa(addr)) == 0)
482: return (EADDRNOTAVAIL);
483: inp->inp_laddr = addr->sin_addr;
484: return (0);
485: }
486:
487: int
1.27 mycroft 488: rip_connect(inp, nam)
489: struct inpcb *inp;
490: struct mbuf *nam;
491: {
492: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
493:
494: if (nam->m_len != sizeof(*addr))
495: return (EINVAL);
1.55.2.2 nathanw 496: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 497: return (EADDRNOTAVAIL);
498: if (addr->sin_family != AF_INET &&
499: addr->sin_family != AF_IMPLINK)
500: return (EAFNOSUPPORT);
501: inp->inp_faddr = addr->sin_addr;
502: return (0);
503: }
504:
505: void
506: rip_disconnect(inp)
507: struct inpcb *inp;
508: {
509:
1.32 mycroft 510: inp->inp_faddr = zeroin_addr;
1.27 mycroft 511: }
512:
1.13 mycroft 513: u_long rip_sendspace = RIPSNDQ;
514: u_long rip_recvspace = RIPRCVQ;
515:
1.1 cgd 516: /*ARGSUSED*/
1.9 mycroft 517: int
1.26 mycroft 518: rip_usrreq(so, req, m, nam, control, p)
1.53 augustss 519: struct socket *so;
1.1 cgd 520: int req;
1.2 cgd 521: struct mbuf *m, *nam, *control;
1.26 mycroft 522: struct proc *p;
1.1 cgd 523: {
1.53 augustss 524: struct inpcb *inp;
1.27 mycroft 525: int s;
1.53 augustss 526: int error = 0;
1.13 mycroft 527: #ifdef MROUTING
1.6 hpeyerl 528: extern struct socket *ip_mrouter;
529: #endif
1.27 mycroft 530:
1.22 pk 531: if (req == PRU_CONTROL)
532: return (in_control(so, (long)m, (caddr_t)nam,
1.26 mycroft 533: (struct ifnet *)control, p));
1.49 thorpej 534:
1.50 thorpej 535: if (req == PRU_PURGEIF) {
1.55.2.1 nathanw 536: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 537: in_purgeif((struct ifnet *)control);
538: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49 thorpej 539: return (0);
540: }
1.22 pk 541:
1.27 mycroft 542: s = splsoftnet();
543: inp = sotoinpcb(so);
1.28 mycroft 544: #ifdef DIAGNOSTIC
545: if (req != PRU_SEND && req != PRU_SENDOOB && control)
546: panic("rip_usrreq: unexpected control mbuf");
547: #endif
1.27 mycroft 548: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 549: error = EINVAL;
550: goto release;
551: }
552:
1.1 cgd 553: switch (req) {
554:
555: case PRU_ATTACH:
1.27 mycroft 556: if (inp != 0) {
557: error = EISCONN;
558: break;
559: }
1.26 mycroft 560: if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13 mycroft 561: error = EACCES;
562: break;
563: }
1.27 mycroft 564: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
565: error = soreserve(so, rip_sendspace, rip_recvspace);
566: if (error)
567: break;
568: }
569: error = in_pcballoc(so, &rawcbtable);
570: if (error)
1.13 mycroft 571: break;
1.27 mycroft 572: inp = sotoinpcb(so);
1.17 cgd 573: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 574: break;
575:
576: case PRU_DETACH:
1.13 mycroft 577: #ifdef MROUTING
1.6 hpeyerl 578: if (so == ip_mrouter)
579: ip_mrouter_done();
580: #endif
1.13 mycroft 581: in_pcbdetach(inp);
1.1 cgd 582: break;
583:
584: case PRU_BIND:
1.29 mycroft 585: error = rip_bind(inp, nam);
1.27 mycroft 586: break;
587:
588: case PRU_LISTEN:
589: error = EOPNOTSUPP;
590: break;
591:
592: case PRU_CONNECT:
593: error = rip_connect(inp, nam);
594: if (error)
1.13 mycroft 595: break;
1.1 cgd 596: soisconnected(so);
1.13 mycroft 597: break;
598:
599: case PRU_CONNECT2:
600: error = EOPNOTSUPP;
601: break;
602:
1.27 mycroft 603: case PRU_DISCONNECT:
604: soisdisconnected(so);
605: rip_disconnect(inp);
606: break;
607:
1.13 mycroft 608: /*
609: * Mark the connection as being incapable of further input.
610: */
611: case PRU_SHUTDOWN:
612: socantsendmore(so);
613: break;
614:
1.27 mycroft 615: case PRU_RCVD:
616: error = EOPNOTSUPP;
617: break;
618:
1.13 mycroft 619: /*
620: * Ship a packet out. The appropriate raw output
621: * routine handles any massaging necessary.
622: */
623: case PRU_SEND:
1.28 mycroft 624: if (control && control->m_len) {
625: m_freem(control);
626: m_freem(m);
627: error = EINVAL;
628: break;
629: }
630: {
1.27 mycroft 631: if (nam) {
632: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 633: error = EISCONN;
1.28 mycroft 634: goto die;
1.13 mycroft 635: }
1.27 mycroft 636: error = rip_connect(inp, nam);
637: if (error) {
1.28 mycroft 638: die:
1.27 mycroft 639: m_freem(m);
640: break;
641: }
1.13 mycroft 642: } else {
1.27 mycroft 643: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 644: error = ENOTCONN;
1.28 mycroft 645: goto die;
1.13 mycroft 646: }
647: }
1.27 mycroft 648: error = rip_output(m, inp);
649: if (nam)
650: rip_disconnect(inp);
1.28 mycroft 651: }
1.13 mycroft 652: break;
653:
654: case PRU_SENSE:
655: /*
656: * stat: don't bother with a blocksize.
657: */
1.27 mycroft 658: splx(s);
1.1 cgd 659: return (0);
1.13 mycroft 660:
661: case PRU_RCVOOB:
1.27 mycroft 662: error = EOPNOTSUPP;
663: break;
664:
1.13 mycroft 665: case PRU_SENDOOB:
1.28 mycroft 666: m_freem(control);
1.27 mycroft 667: m_freem(m);
1.13 mycroft 668: error = EOPNOTSUPP;
669: break;
670:
671: case PRU_SOCKADDR:
672: in_setsockaddr(inp, nam);
673: break;
674:
675: case PRU_PEERADDR:
676: in_setpeeraddr(inp, nam);
677: break;
678:
679: default:
680: panic("rip_usrreq");
1.1 cgd 681: }
1.27 mycroft 682:
1.22 pk 683: release:
1.27 mycroft 684: splx(s);
1.1 cgd 685: return (error);
686: }
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