Annotation of src/sys/netinet/raw_ip.c, Revision 1.71
1.71 ! agc 1: /* $NetBSD: raw_ip.c,v 1.70 2003/06/29 22:31:57 fvdl 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.
1.71 ! agc 44: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
1.39 thorpej 60: * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95
1.1 cgd 61: */
1.59 lukem 62:
63: #include <sys/cdefs.h>
1.71 ! agc 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.70 2003/06/29 22:31:57 fvdl Exp $");
1.40 scottr 65:
1.45 thorpej 66: #include "opt_ipsec.h"
1.40 scottr 67: #include "opt_mrouting.h"
1.1 cgd 68:
1.7 mycroft 69: #include <sys/param.h>
70: #include <sys/malloc.h>
71: #include <sys/mbuf.h>
72: #include <sys/socket.h>
73: #include <sys/protosw.h>
74: #include <sys/socketvar.h>
75: #include <sys/errno.h>
1.13 mycroft 76: #include <sys/systm.h>
1.26 mycroft 77: #include <sys/proc.h>
1.1 cgd 78:
1.7 mycroft 79: #include <net/if.h>
80: #include <net/route.h>
1.1 cgd 81:
1.7 mycroft 82: #include <netinet/in.h>
83: #include <netinet/in_systm.h>
84: #include <netinet/ip.h>
85: #include <netinet/ip_var.h>
1.13 mycroft 86: #include <netinet/ip_mroute.h>
1.44 darrenr 87: #include <netinet/ip_icmp.h>
1.7 mycroft 88: #include <netinet/in_pcb.h>
1.24 christos 89: #include <netinet/in_var.h>
90:
91: #include <machine/stdarg.h>
1.13 mycroft 92:
1.43 itojun 93: #ifdef IPSEC
94: #include <netinet6/ipsec.h>
95: #endif /*IPSEC*/
96:
1.20 mycroft 97: struct inpcbtable rawcbtable;
1.30 pk 98:
1.60 itojun 99: int rip_pcbnotify __P((struct inpcbtable *, struct in_addr,
100: struct in_addr, int, int, void (*) __P((struct inpcb *, int))));
1.30 pk 101: int rip_bind __P((struct inpcb *, struct mbuf *));
102: int rip_connect __P((struct inpcb *, struct mbuf *));
103: void rip_disconnect __P((struct inpcb *));
1.13 mycroft 104:
105: /*
106: * Nominal space allocated to a raw ip socket.
107: */
108: #define RIPSNDQ 8192
109: #define RIPRCVQ 8192
1.1 cgd 110:
111: /*
112: * Raw interface to IP protocol.
113: */
1.13 mycroft 114:
115: /*
116: * Initialize raw connection block q.
117: */
118: void
119: rip_init()
120: {
121:
1.33 mycroft 122: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 123: }
124:
1.1 cgd 125: /*
126: * Setup generic address and protocol structures
127: * for raw_input routine, then pass them along with
128: * mbuf chain.
129: */
1.9 mycroft 130: void
1.24 christos 131: #if __STDC__
132: rip_input(struct mbuf *m, ...)
133: #else
134: rip_input(m, va_alist)
1.1 cgd 135: struct mbuf *m;
1.24 christos 136: va_dcl
137: #endif
1.1 cgd 138: {
1.63 simonb 139: int proto;
1.53 augustss 140: struct ip *ip = mtod(m, struct ip *);
141: struct inpcb *inp;
1.36 thorpej 142: struct inpcb *last = 0;
143: struct mbuf *opts = 0;
1.32 mycroft 144: struct sockaddr_in ripsrc;
1.43 itojun 145: va_list ap;
146:
147: va_start(ap, m);
1.64 simonb 148: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 149: proto = va_arg(ap, int);
150: va_end(ap);
1.1 cgd 151:
1.32 mycroft 152: ripsrc.sin_family = AF_INET;
153: ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1 cgd 154: ripsrc.sin_addr = ip->ip_src;
1.34 mycroft 155: ripsrc.sin_port = 0;
156: bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42 thorpej 157:
158: /*
159: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 160: * XXX to have the header length subtracted, and in host order.
161: * XXX ip_off is also expected to be host order.
1.42 thorpej 162: */
1.62 itojun 163: ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2);
164: NTOHS(ip->ip_off);
1.32 mycroft 165:
1.58 matt 166: CIRCLEQ_FOREACH(inp, &rawcbtable.inpt_queue, inp_queue) {
1.43 itojun 167: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 168: continue;
1.32 mycroft 169: if (!in_nullhost(inp->inp_laddr) &&
170: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 171: continue;
1.32 mycroft 172: if (!in_nullhost(inp->inp_faddr) &&
173: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 174: continue;
175: if (last) {
176: struct mbuf *n;
1.55 itojun 177:
178: #ifdef IPSEC
179: /* check AH/ESP integrity. */
180: if (ipsec4_in_reject_so(m, last->inp_socket)) {
181: ipsecstat.in_polvio++;
182: /* do not inject data to pcb */
183: } else
184: #endif /*IPSEC*/
1.24 christos 185: if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36 thorpej 186: if (last->inp_flags & INP_CONTROLOPTS ||
187: last->inp_socket->so_options & SO_TIMESTAMP)
188: ip_savecontrol(last, &opts, ip, n);
189: if (sbappendaddr(&last->inp_socket->so_rcv,
190: sintosa(&ripsrc), n, opts) == 0) {
1.13 mycroft 191: /* should notify about lost packet */
192: m_freem(n);
1.36 thorpej 193: if (opts)
194: m_freem(opts);
195: } else
196: sorwakeup(last->inp_socket);
1.41 thorpej 197: opts = NULL;
1.13 mycroft 198: }
199: }
1.36 thorpej 200: last = inp;
1.13 mycroft 201: }
1.55 itojun 202: #ifdef IPSEC
203: /* check AH/ESP integrity. */
204: if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
205: m_freem(m);
206: ipsecstat.in_polvio++;
207: ipstat.ips_delivered--;
208: /* do not inject data to pcb */
209: } else
210: #endif /*IPSEC*/
1.13 mycroft 211: if (last) {
1.36 thorpej 212: if (last->inp_flags & INP_CONTROLOPTS ||
213: last->inp_socket->so_options & SO_TIMESTAMP)
214: ip_savecontrol(last, &opts, ip, m);
215: if (sbappendaddr(&last->inp_socket->so_rcv,
216: sintosa(&ripsrc), m, opts) == 0) {
1.13 mycroft 217: m_freem(m);
1.36 thorpej 218: if (opts)
219: m_freem(opts);
220: } else
221: sorwakeup(last->inp_socket);
1.13 mycroft 222: } else {
1.44 darrenr 223: if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.47 itojun 224: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
225: 0, 0);
1.44 darrenr 226: ipstat.ips_noproto++;
227: ipstat.ips_delivered--;
228: } else
229: m_freem(m);
1.1 cgd 230: }
1.43 itojun 231: return;
1.60 itojun 232: }
233:
234: int
235: rip_pcbnotify(table, faddr, laddr, proto, errno, notify)
236: struct inpcbtable *table;
237: struct in_addr faddr, laddr;
238: int proto;
239: int errno;
240: void (*notify) __P((struct inpcb *, int));
241: {
242: struct inpcb *inp, *ninp;
243: int nmatch;
244:
245: nmatch = 0;
246: for (inp = CIRCLEQ_FIRST(&table->inpt_queue);
247: inp != (struct inpcb *)&table->inpt_queue;
248: inp = ninp) {
249: ninp = inp->inp_queue.cqe_next;
250: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
251: continue;
252: if (in_hosteq(inp->inp_faddr, faddr) &&
253: in_hosteq(inp->inp_laddr, laddr)) {
254: (*notify)(inp, errno);
255: nmatch++;
256: }
257: }
258:
259: return nmatch;
260: }
261:
262: void *
263: rip_ctlinput(cmd, sa, v)
264: int cmd;
265: struct sockaddr *sa;
266: void *v;
267: {
268: struct ip *ip = v;
269: void (*notify) __P((struct inpcb *, int)) = in_rtchange;
270: int errno;
271:
272: if (sa->sa_family != AF_INET ||
273: sa->sa_len != sizeof(struct sockaddr_in))
274: return NULL;
275: if ((unsigned)cmd >= PRC_NCMDS)
276: return NULL;
277: errno = inetctlerrmap[cmd];
278: if (PRC_IS_REDIRECT(cmd))
279: notify = in_rtchange, ip = 0;
280: else if (cmd == PRC_HOSTDEAD)
281: ip = 0;
282: else if (errno == 0)
283: return NULL;
284: if (ip) {
285: rip_pcbnotify(&rawcbtable, satosin(sa)->sin_addr,
286: ip->ip_src, ip->ip_p, errno, notify);
287:
288: /* XXX mapped address case */
289: } else
290: in_pcbnotifyall(&rawcbtable, satosin(sa)->sin_addr, errno,
291: notify);
292: return NULL;
1.1 cgd 293: }
294:
295: /*
296: * Generate IP header and pass packet to ip_output.
297: * Tack on options user may have setup with control call.
298: */
1.9 mycroft 299: int
1.24 christos 300: #if __STDC__
301: rip_output(struct mbuf *m, ...)
302: #else
303: rip_output(m, va_alist)
304: struct mbuf *m;
305: va_dcl
306: #endif
307: {
1.53 augustss 308: struct inpcb *inp;
309: struct ip *ip;
1.10 mycroft 310: struct mbuf *opts;
1.24 christos 311: int flags;
312: va_list ap;
313:
314: va_start(ap, m);
1.27 mycroft 315: inp = va_arg(ap, struct inpcb *);
1.24 christos 316: va_end(ap);
317:
1.27 mycroft 318: flags =
1.37 matt 319: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
320: | IP_RETURNMTU;
1.1 cgd 321:
322: /*
323: * If the user handed us a complete IP packet, use it.
324: * Otherwise, allocate an mbuf for a header and fill it in.
325: */
1.13 mycroft 326: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 327: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
328: m_freem(m);
329: return (EMSGSIZE);
330: }
1.68 itojun 331: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
332: if (!m)
333: return (ENOBUFS);
1.1 cgd 334: ip = mtod(m, struct ip *);
335: ip->ip_tos = 0;
1.62 itojun 336: ip->ip_off = htons(0);
1.13 mycroft 337: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 338: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 339: ip->ip_src = inp->inp_laddr;
1.27 mycroft 340: ip->ip_dst = inp->inp_faddr;
1.1 cgd 341: ip->ip_ttl = MAXTTL;
1.13 mycroft 342: opts = inp->inp_options;
343: } else {
1.35 thorpej 344: if (m->m_pkthdr.len > IP_MAXPACKET) {
345: m_freem(m);
346: return (EMSGSIZE);
347: }
1.13 mycroft 348: ip = mtod(m, struct ip *);
1.65 thorpej 349:
350: /*
351: * If the mbuf is read-only, we need to allocate
352: * a new mbuf for the header, since we need to
353: * modify the header.
354: */
355: if (M_READONLY(m)) {
356: int hlen = ip->ip_hl << 2;
357:
358: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
359: if (m == NULL)
360: return (ENOMEM); /* XXX */
361: ip = mtod(m, struct ip *);
362: }
363:
1.62 itojun 364: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 365: if (m->m_pkthdr.len != ip->ip_len) {
366: m_freem(m);
367: return (EINVAL);
368: }
1.62 itojun 369: HTONS(ip->ip_len);
370: HTONS(ip->ip_off);
1.13 mycroft 371: if (ip->ip_id == 0)
372: ip->ip_id = htons(ip_id++);
373: opts = NULL;
374: /* XXX prevent ip_output from overwriting header fields */
375: flags |= IP_RAWOUTPUT;
376: ipstat.ips_rawout++;
1.1 cgd 377: }
1.43 itojun 378: #ifdef IPSEC
1.54 itojun 379: if (ipsec_setsocket(m, inp->inp_socket) != 0) {
380: m_freem(m);
381: return ENOBUFS;
382: }
1.43 itojun 383: #endif /*IPSEC*/
1.62 itojun 384: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
385: &inp->inp_errormtu));
1.1 cgd 386: }
387:
388: /*
389: * Raw IP socket option processing.
390: */
1.9 mycroft 391: int
1.1 cgd 392: rip_ctloutput(op, so, level, optname, m)
393: int op;
394: struct socket *so;
395: int level, optname;
396: struct mbuf **m;
397: {
1.53 augustss 398: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 399: int error = 0;
1.1 cgd 400:
1.15 mycroft 401: if (level != IPPROTO_IP) {
1.31 mycroft 402: error = ENOPROTOOPT;
403: if (op == PRCO_SETOPT && *m != 0)
404: (void) m_free(*m);
405: } else switch (op) {
406:
407: case PRCO_SETOPT:
408: switch (optname) {
409: case IP_HDRINCL:
410: if (*m == 0 || (*m)->m_len < sizeof (int))
411: error = EINVAL;
412: else {
1.13 mycroft 413: if (*mtod(*m, int *))
414: inp->inp_flags |= INP_HDRINCL;
415: else
416: inp->inp_flags &= ~INP_HDRINCL;
417: }
1.31 mycroft 418: if (*m != 0)
419: (void) m_free(*m);
420: break;
421:
422: #ifdef MROUTING
423: case MRT_INIT:
424: case MRT_DONE:
425: case MRT_ADD_VIF:
426: case MRT_DEL_VIF:
427: case MRT_ADD_MFC:
428: case MRT_DEL_MFC:
429: case MRT_ASSERT:
430: error = ip_mrouter_set(so, optname, m);
431: break;
432: #endif
433:
434: default:
435: error = ip_ctloutput(op, so, level, optname, m);
436: break;
1.13 mycroft 437: }
438: break;
1.1 cgd 439:
1.31 mycroft 440: case PRCO_GETOPT:
441: switch (optname) {
442: case IP_HDRINCL:
1.66 thorpej 443: *m = m_get(M_WAIT, MT_SOOPTS);
1.67 matt 444: MCLAIM((*m), so->so_mowner);
1.31 mycroft 445: (*m)->m_len = sizeof (int);
446: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
447: break;
448:
1.6 hpeyerl 449: #ifdef MROUTING
1.31 mycroft 450: case MRT_VERSION:
451: case MRT_ASSERT:
452: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 453: break;
1.31 mycroft 454: #endif
455:
1.18 mycroft 456: default:
1.31 mycroft 457: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 458: break;
459: }
1.31 mycroft 460: break;
1.1 cgd 461: }
1.31 mycroft 462: return (error);
1.1 cgd 463: }
464:
1.27 mycroft 465: int
1.29 mycroft 466: rip_bind(inp, nam)
467: struct inpcb *inp;
468: struct mbuf *nam;
469: {
470: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
471:
472: if (nam->m_len != sizeof(*addr))
473: return (EINVAL);
1.58 matt 474: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 475: return (EADDRNOTAVAIL);
476: if (addr->sin_family != AF_INET &&
477: addr->sin_family != AF_IMPLINK)
478: return (EAFNOSUPPORT);
1.32 mycroft 479: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 480: ifa_ifwithaddr(sintosa(addr)) == 0)
481: return (EADDRNOTAVAIL);
482: inp->inp_laddr = addr->sin_addr;
483: return (0);
484: }
485:
486: int
1.27 mycroft 487: rip_connect(inp, nam)
488: struct inpcb *inp;
489: struct mbuf *nam;
490: {
491: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
492:
493: if (nam->m_len != sizeof(*addr))
494: return (EINVAL);
1.58 matt 495: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 496: return (EADDRNOTAVAIL);
497: if (addr->sin_family != AF_INET &&
498: addr->sin_family != AF_IMPLINK)
499: return (EAFNOSUPPORT);
500: inp->inp_faddr = addr->sin_addr;
501: return (0);
502: }
503:
504: void
505: rip_disconnect(inp)
506: struct inpcb *inp;
507: {
508:
1.32 mycroft 509: inp->inp_faddr = zeroin_addr;
1.27 mycroft 510: }
511:
1.13 mycroft 512: u_long rip_sendspace = RIPSNDQ;
513: u_long rip_recvspace = RIPRCVQ;
514:
1.1 cgd 515: /*ARGSUSED*/
1.9 mycroft 516: int
1.70 fvdl 517: rip_usrreq(so, req, m, nam, control, p)
1.53 augustss 518: struct socket *so;
1.1 cgd 519: int req;
1.2 cgd 520: struct mbuf *m, *nam, *control;
1.70 fvdl 521: struct proc *p;
1.1 cgd 522: {
1.53 augustss 523: struct inpcb *inp;
1.27 mycroft 524: int s;
1.53 augustss 525: int error = 0;
1.13 mycroft 526: #ifdef MROUTING
1.6 hpeyerl 527: extern struct socket *ip_mrouter;
528: #endif
1.27 mycroft 529:
1.22 pk 530: if (req == PRU_CONTROL)
531: return (in_control(so, (long)m, (caddr_t)nam,
1.26 mycroft 532: (struct ifnet *)control, p));
1.49 thorpej 533:
1.50 thorpej 534: if (req == PRU_PURGEIF) {
1.56 itojun 535: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 536: in_purgeif((struct ifnet *)control);
537: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49 thorpej 538: return (0);
539: }
1.22 pk 540:
1.27 mycroft 541: s = splsoftnet();
542: inp = sotoinpcb(so);
1.28 mycroft 543: #ifdef DIAGNOSTIC
544: if (req != PRU_SEND && req != PRU_SENDOOB && control)
545: panic("rip_usrreq: unexpected control mbuf");
546: #endif
1.27 mycroft 547: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 548: error = EINVAL;
549: goto release;
550: }
551:
1.1 cgd 552: switch (req) {
553:
554: case PRU_ATTACH:
1.27 mycroft 555: if (inp != 0) {
556: error = EISCONN;
557: break;
558: }
1.26 mycroft 559: if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13 mycroft 560: error = EACCES;
561: break;
562: }
1.27 mycroft 563: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
564: error = soreserve(so, rip_sendspace, rip_recvspace);
565: if (error)
566: break;
567: }
568: error = in_pcballoc(so, &rawcbtable);
569: if (error)
1.13 mycroft 570: break;
1.27 mycroft 571: inp = sotoinpcb(so);
1.17 cgd 572: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 573: break;
574:
575: case PRU_DETACH:
1.13 mycroft 576: #ifdef MROUTING
1.6 hpeyerl 577: if (so == ip_mrouter)
578: ip_mrouter_done();
579: #endif
1.13 mycroft 580: in_pcbdetach(inp);
1.1 cgd 581: break;
582:
583: case PRU_BIND:
1.29 mycroft 584: error = rip_bind(inp, nam);
1.27 mycroft 585: break;
586:
587: case PRU_LISTEN:
588: error = EOPNOTSUPP;
589: break;
590:
591: case PRU_CONNECT:
592: error = rip_connect(inp, nam);
593: if (error)
1.13 mycroft 594: break;
1.1 cgd 595: soisconnected(so);
1.13 mycroft 596: break;
597:
598: case PRU_CONNECT2:
599: error = EOPNOTSUPP;
600: break;
601:
1.27 mycroft 602: case PRU_DISCONNECT:
603: soisdisconnected(so);
604: rip_disconnect(inp);
605: break;
606:
1.13 mycroft 607: /*
608: * Mark the connection as being incapable of further input.
609: */
610: case PRU_SHUTDOWN:
611: socantsendmore(so);
612: break;
613:
1.27 mycroft 614: case PRU_RCVD:
615: error = EOPNOTSUPP;
616: break;
617:
1.13 mycroft 618: /*
619: * Ship a packet out. The appropriate raw output
620: * routine handles any massaging necessary.
621: */
622: case PRU_SEND:
1.28 mycroft 623: if (control && control->m_len) {
624: m_freem(control);
625: m_freem(m);
626: error = EINVAL;
627: break;
628: }
629: {
1.27 mycroft 630: if (nam) {
631: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 632: error = EISCONN;
1.28 mycroft 633: goto die;
1.13 mycroft 634: }
1.27 mycroft 635: error = rip_connect(inp, nam);
636: if (error) {
1.28 mycroft 637: die:
1.27 mycroft 638: m_freem(m);
639: break;
640: }
1.13 mycroft 641: } else {
1.27 mycroft 642: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 643: error = ENOTCONN;
1.28 mycroft 644: goto die;
1.13 mycroft 645: }
646: }
1.27 mycroft 647: error = rip_output(m, inp);
648: if (nam)
649: rip_disconnect(inp);
1.28 mycroft 650: }
1.13 mycroft 651: break;
652:
653: case PRU_SENSE:
654: /*
655: * stat: don't bother with a blocksize.
656: */
1.27 mycroft 657: splx(s);
1.1 cgd 658: return (0);
1.13 mycroft 659:
660: case PRU_RCVOOB:
1.27 mycroft 661: error = EOPNOTSUPP;
662: break;
663:
1.13 mycroft 664: case PRU_SENDOOB:
1.28 mycroft 665: m_freem(control);
1.27 mycroft 666: m_freem(m);
1.13 mycroft 667: error = EOPNOTSUPP;
668: break;
669:
670: case PRU_SOCKADDR:
671: in_setsockaddr(inp, nam);
672: break;
673:
674: case PRU_PEERADDR:
675: in_setpeeraddr(inp, nam);
676: break;
677:
678: default:
679: panic("rip_usrreq");
1.1 cgd 680: }
1.27 mycroft 681:
1.22 pk 682: release:
1.27 mycroft 683: splx(s);
1.1 cgd 684: return (error);
685: }
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to raw_ip.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / netinet