Annotation of src/sys/netinet/raw_ip.c, Revision 1.96.4.1
1.96.4.1! mjf 1: /* $NetBSD: raw_ip.c,v 1.97 2007/05/12 02:10:25 dyoung 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>
1.96.4.1! mjf 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.97 2007/05/12 02:10:25 dyoung Exp $");
1.40 scottr 65:
1.78 jonathan 66: #include "opt_inet.h"
1.45 thorpej 67: #include "opt_ipsec.h"
1.40 scottr 68: #include "opt_mrouting.h"
1.1 cgd 69:
1.7 mycroft 70: #include <sys/param.h>
1.84 atatat 71: #include <sys/sysctl.h>
1.7 mycroft 72: #include <sys/malloc.h>
73: #include <sys/mbuf.h>
74: #include <sys/socket.h>
75: #include <sys/protosw.h>
76: #include <sys/socketvar.h>
77: #include <sys/errno.h>
1.13 mycroft 78: #include <sys/systm.h>
1.26 mycroft 79: #include <sys/proc.h>
1.89 elad 80: #include <sys/kauth.h>
1.1 cgd 81:
1.7 mycroft 82: #include <net/if.h>
83: #include <net/route.h>
1.1 cgd 84:
1.7 mycroft 85: #include <netinet/in.h>
86: #include <netinet/in_systm.h>
87: #include <netinet/ip.h>
88: #include <netinet/ip_var.h>
1.13 mycroft 89: #include <netinet/ip_mroute.h>
1.44 darrenr 90: #include <netinet/ip_icmp.h>
1.7 mycroft 91: #include <netinet/in_pcb.h>
1.87 yamt 92: #include <netinet/in_proto.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:
1.72 jonathan 101: #ifdef FAST_IPSEC
102: #include <netipsec/ipsec.h>
1.80 jonathan 103: #include <netipsec/ipsec_var.h> /* XXX ipsecstat namespace */
1.72 jonathan 104: #endif /* FAST_IPSEC*/
105:
1.20 mycroft 106: struct inpcbtable rawcbtable;
1.30 pk 107:
1.82 perry 108: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
109: struct in_addr, int, int, void (*)(struct inpcb *, int));
110: int rip_bind(struct inpcb *, struct mbuf *);
111: int rip_connect(struct inpcb *, struct mbuf *);
112: void rip_disconnect(struct inpcb *);
1.13 mycroft 113:
114: /*
115: * Nominal space allocated to a raw ip socket.
116: */
117: #define RIPSNDQ 8192
118: #define RIPRCVQ 8192
1.1 cgd 119:
120: /*
121: * Raw interface to IP protocol.
122: */
1.13 mycroft 123:
124: /*
125: * Initialize raw connection block q.
126: */
127: void
1.83 perry 128: rip_init(void)
1.13 mycroft 129: {
130:
1.33 mycroft 131: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 132: }
133:
1.1 cgd 134: /*
135: * Setup generic address and protocol structures
136: * for raw_input routine, then pass them along with
137: * mbuf chain.
138: */
1.9 mycroft 139: void
1.24 christos 140: rip_input(struct mbuf *m, ...)
1.1 cgd 141: {
1.63 simonb 142: int proto;
1.53 augustss 143: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 144: struct inpcb_hdr *inph;
1.53 augustss 145: struct inpcb *inp;
1.96.4.1! mjf 146: struct inpcb *last = NULL;
! 147: struct mbuf *n, *opts = NULL;
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:
1.96.4.1! mjf 156: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
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:
1.75 itojun 166: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
167: inp = (struct inpcb *)inph;
168: if (inp->inp_af != AF_INET)
169: continue;
1.43 itojun 170: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 171: continue;
1.32 mycroft 172: if (!in_nullhost(inp->inp_laddr) &&
173: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 174: continue;
1.32 mycroft 175: if (!in_nullhost(inp->inp_faddr) &&
176: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 177: continue;
1.96.4.1! mjf 178: if (last == NULL)
! 179: ;
1.72 jonathan 180: #if defined(IPSEC) || defined(FAST_IPSEC)
1.96.4.1! mjf 181: /* check AH/ESP integrity. */
! 182: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
! 183: ipsecstat.in_polvio++;
! 184: /* do not inject data to pcb */
! 185: }
1.55 itojun 186: #endif /*IPSEC*/
1.96.4.1! mjf 187: else if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
! 188: if (last->inp_flags & INP_CONTROLOPTS ||
! 189: last->inp_socket->so_options & SO_TIMESTAMP)
! 190: ip_savecontrol(last, &opts, ip, n);
! 191: if (sbappendaddr(&last->inp_socket->so_rcv,
! 192: sintosa(&ripsrc), n, opts) == 0) {
! 193: /* should notify about lost packet */
! 194: m_freem(n);
! 195: if (opts)
! 196: m_freem(opts);
! 197: } else
! 198: sorwakeup(last->inp_socket);
! 199: opts = NULL;
1.13 mycroft 200: }
1.36 thorpej 201: last = inp;
1.13 mycroft 202: }
1.72 jonathan 203: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 204: /* check AH/ESP integrity. */
1.96.4.1! mjf 205: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 206: m_freem(m);
207: ipsecstat.in_polvio++;
208: ipstat.ips_delivered--;
209: /* do not inject data to pcb */
210: } else
211: #endif /*IPSEC*/
1.96.4.1! mjf 212: if (last != NULL) {
1.36 thorpej 213: if (last->inp_flags & INP_CONTROLOPTS ||
214: last->inp_socket->so_options & SO_TIMESTAMP)
215: ip_savecontrol(last, &opts, ip, m);
216: if (sbappendaddr(&last->inp_socket->so_rcv,
217: sintosa(&ripsrc), m, opts) == 0) {
1.13 mycroft 218: m_freem(m);
1.36 thorpej 219: if (opts)
220: m_freem(opts);
221: } else
222: sorwakeup(last->inp_socket);
1.96.4.1! mjf 223: } else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
! 224: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
! 225: 0, 0);
! 226: ipstat.ips_noproto++;
! 227: ipstat.ips_delivered--;
! 228: } else
! 229: m_freem(m);
1.43 itojun 230: return;
1.60 itojun 231: }
232:
233: int
1.83 perry 234: rip_pcbnotify(struct inpcbtable *table,
235: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
236: void (*notify)(struct inpcb *, int))
1.60 itojun 237: {
238: struct inpcb *inp, *ninp;
239: int nmatch;
240:
241: nmatch = 0;
1.75 itojun 242: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 243: inp != (struct inpcb *)&table->inpt_queue;
244: inp = ninp) {
1.75 itojun 245: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
246: if (inp->inp_af != AF_INET)
247: continue;
1.60 itojun 248: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
249: continue;
250: if (in_hosteq(inp->inp_faddr, faddr) &&
251: in_hosteq(inp->inp_laddr, laddr)) {
252: (*notify)(inp, errno);
253: nmatch++;
254: }
255: }
256:
257: return nmatch;
258: }
259:
260: void *
1.95 dyoung 261: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 262: {
263: struct ip *ip = v;
1.82 perry 264: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 265: int errno;
266:
267: if (sa->sa_family != AF_INET ||
268: sa->sa_len != sizeof(struct sockaddr_in))
269: return NULL;
270: if ((unsigned)cmd >= PRC_NCMDS)
271: return NULL;
272: errno = inetctlerrmap[cmd];
273: if (PRC_IS_REDIRECT(cmd))
274: notify = in_rtchange, ip = 0;
275: else if (cmd == PRC_HOSTDEAD)
276: ip = 0;
277: else if (errno == 0)
278: return NULL;
279: if (ip) {
1.95 dyoung 280: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 281: ip->ip_src, ip->ip_p, errno, notify);
282:
283: /* XXX mapped address case */
284: } else
1.95 dyoung 285: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 286: notify);
287: return NULL;
1.1 cgd 288: }
289:
290: /*
291: * Generate IP header and pass packet to ip_output.
292: * Tack on options user may have setup with control call.
293: */
1.9 mycroft 294: int
1.24 christos 295: rip_output(struct mbuf *m, ...)
296: {
1.53 augustss 297: struct inpcb *inp;
298: struct ip *ip;
1.10 mycroft 299: struct mbuf *opts;
1.24 christos 300: int flags;
301: va_list ap;
302:
303: va_start(ap, m);
1.27 mycroft 304: inp = va_arg(ap, struct inpcb *);
1.24 christos 305: va_end(ap);
306:
1.27 mycroft 307: flags =
1.37 matt 308: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
309: | IP_RETURNMTU;
1.1 cgd 310:
311: /*
312: * If the user handed us a complete IP packet, use it.
313: * Otherwise, allocate an mbuf for a header and fill it in.
314: */
1.13 mycroft 315: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 316: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
317: m_freem(m);
318: return (EMSGSIZE);
319: }
1.68 itojun 320: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
321: if (!m)
322: return (ENOBUFS);
1.1 cgd 323: ip = mtod(m, struct ip *);
324: ip->ip_tos = 0;
1.62 itojun 325: ip->ip_off = htons(0);
1.13 mycroft 326: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 327: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 328: ip->ip_src = inp->inp_laddr;
1.27 mycroft 329: ip->ip_dst = inp->inp_faddr;
1.1 cgd 330: ip->ip_ttl = MAXTTL;
1.13 mycroft 331: opts = inp->inp_options;
332: } else {
1.35 thorpej 333: if (m->m_pkthdr.len > IP_MAXPACKET) {
334: m_freem(m);
335: return (EMSGSIZE);
336: }
1.13 mycroft 337: ip = mtod(m, struct ip *);
1.65 thorpej 338:
339: /*
340: * If the mbuf is read-only, we need to allocate
341: * a new mbuf for the header, since we need to
342: * modify the header.
343: */
344: if (M_READONLY(m)) {
345: int hlen = ip->ip_hl << 2;
346:
347: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
348: if (m == NULL)
349: return (ENOMEM); /* XXX */
350: ip = mtod(m, struct ip *);
351: }
352:
1.62 itojun 353: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 354: if (m->m_pkthdr.len != ip->ip_len) {
355: m_freem(m);
356: return (EINVAL);
357: }
1.62 itojun 358: HTONS(ip->ip_len);
359: HTONS(ip->ip_off);
1.13 mycroft 360: if (ip->ip_id == 0)
1.77 jonathan 361: ip->ip_id = ip_newid();
1.13 mycroft 362: opts = NULL;
363: /* XXX prevent ip_output from overwriting header fields */
364: flags |= IP_RAWOUTPUT;
365: ipstat.ips_rawout++;
1.1 cgd 366: }
1.62 itojun 367: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 368: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 369: }
370:
371: /*
372: * Raw IP socket option processing.
373: */
1.9 mycroft 374: int
1.83 perry 375: rip_ctloutput(int op, struct socket *so, int level, int optname,
376: struct mbuf **m)
1.1 cgd 377: {
1.53 augustss 378: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 379: int error = 0;
1.1 cgd 380:
1.15 mycroft 381: if (level != IPPROTO_IP) {
1.31 mycroft 382: error = ENOPROTOOPT;
383: if (op == PRCO_SETOPT && *m != 0)
384: (void) m_free(*m);
385: } else switch (op) {
386:
387: case PRCO_SETOPT:
388: switch (optname) {
389: case IP_HDRINCL:
390: if (*m == 0 || (*m)->m_len < sizeof (int))
391: error = EINVAL;
392: else {
1.13 mycroft 393: if (*mtod(*m, int *))
394: inp->inp_flags |= INP_HDRINCL;
395: else
396: inp->inp_flags &= ~INP_HDRINCL;
397: }
1.31 mycroft 398: if (*m != 0)
399: (void) m_free(*m);
400: break;
401:
402: #ifdef MROUTING
403: case MRT_INIT:
404: case MRT_DONE:
405: case MRT_ADD_VIF:
406: case MRT_DEL_VIF:
407: case MRT_ADD_MFC:
408: case MRT_DEL_MFC:
409: case MRT_ASSERT:
1.81 manu 410: case MRT_API_CONFIG:
411: case MRT_ADD_BW_UPCALL:
412: case MRT_DEL_BW_UPCALL:
1.31 mycroft 413: error = ip_mrouter_set(so, optname, m);
414: break;
415: #endif
416:
417: default:
418: error = ip_ctloutput(op, so, level, optname, m);
419: break;
1.13 mycroft 420: }
421: break;
1.1 cgd 422:
1.31 mycroft 423: case PRCO_GETOPT:
424: switch (optname) {
425: case IP_HDRINCL:
1.66 thorpej 426: *m = m_get(M_WAIT, MT_SOOPTS);
1.67 matt 427: MCLAIM((*m), so->so_mowner);
1.31 mycroft 428: (*m)->m_len = sizeof (int);
429: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
430: break;
431:
1.6 hpeyerl 432: #ifdef MROUTING
1.31 mycroft 433: case MRT_VERSION:
434: case MRT_ASSERT:
1.81 manu 435: case MRT_API_SUPPORT:
436: case MRT_API_CONFIG:
1.31 mycroft 437: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 438: break;
1.31 mycroft 439: #endif
440:
1.18 mycroft 441: default:
1.31 mycroft 442: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 443: break;
444: }
1.31 mycroft 445: break;
1.1 cgd 446: }
1.31 mycroft 447: return (error);
1.1 cgd 448: }
449:
1.27 mycroft 450: int
1.83 perry 451: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 452: {
453: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
454:
455: if (nam->m_len != sizeof(*addr))
456: return (EINVAL);
1.58 matt 457: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 458: return (EADDRNOTAVAIL);
459: if (addr->sin_family != AF_INET &&
460: addr->sin_family != AF_IMPLINK)
461: return (EAFNOSUPPORT);
1.32 mycroft 462: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 463: ifa_ifwithaddr(sintosa(addr)) == 0)
464: return (EADDRNOTAVAIL);
465: inp->inp_laddr = addr->sin_addr;
466: return (0);
467: }
468:
469: int
1.83 perry 470: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 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)
1.27 mycroft 477: return (EADDRNOTAVAIL);
478: if (addr->sin_family != AF_INET &&
479: addr->sin_family != AF_IMPLINK)
480: return (EAFNOSUPPORT);
481: inp->inp_faddr = addr->sin_addr;
482: return (0);
483: }
484:
485: void
1.83 perry 486: rip_disconnect(struct inpcb *inp)
1.27 mycroft 487: {
488:
1.32 mycroft 489: inp->inp_faddr = zeroin_addr;
1.27 mycroft 490: }
491:
1.13 mycroft 492: u_long rip_sendspace = RIPSNDQ;
493: u_long rip_recvspace = RIPRCVQ;
494:
1.1 cgd 495: /*ARGSUSED*/
1.9 mycroft 496: int
1.83 perry 497: rip_usrreq(struct socket *so, int req,
1.88 christos 498: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 499: {
1.53 augustss 500: struct inpcb *inp;
1.27 mycroft 501: int s;
1.53 augustss 502: int error = 0;
1.13 mycroft 503: #ifdef MROUTING
1.6 hpeyerl 504: extern struct socket *ip_mrouter;
505: #endif
1.27 mycroft 506:
1.22 pk 507: if (req == PRU_CONTROL)
1.96 christos 508: return (in_control(so, (long)m, (void *)nam,
1.90 ad 509: (struct ifnet *)control, l));
1.49 thorpej 510:
1.93 tls 511: s = splsoftnet();
512:
1.50 thorpej 513: if (req == PRU_PURGEIF) {
1.56 itojun 514: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 515: in_purgeif((struct ifnet *)control);
516: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.93 tls 517: splx(s);
1.49 thorpej 518: return (0);
519: }
1.22 pk 520:
1.27 mycroft 521: inp = sotoinpcb(so);
1.28 mycroft 522: #ifdef DIAGNOSTIC
523: if (req != PRU_SEND && req != PRU_SENDOOB && control)
524: panic("rip_usrreq: unexpected control mbuf");
525: #endif
1.27 mycroft 526: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 527: error = EINVAL;
528: goto release;
529: }
530:
1.1 cgd 531: switch (req) {
532:
533: case PRU_ATTACH:
1.27 mycroft 534: if (inp != 0) {
535: error = EISCONN;
536: break;
537: }
1.94 elad 538:
539: if (l == NULL) {
1.13 mycroft 540: error = EACCES;
541: break;
542: }
1.94 elad 543:
544: /* XXX: raw socket permissions are checked in socreate() */
545:
1.27 mycroft 546: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
547: error = soreserve(so, rip_sendspace, rip_recvspace);
548: if (error)
549: break;
550: }
551: error = in_pcballoc(so, &rawcbtable);
552: if (error)
1.13 mycroft 553: break;
1.27 mycroft 554: inp = sotoinpcb(so);
1.17 cgd 555: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 556: break;
557:
558: case PRU_DETACH:
1.13 mycroft 559: #ifdef MROUTING
1.6 hpeyerl 560: if (so == ip_mrouter)
561: ip_mrouter_done();
562: #endif
1.13 mycroft 563: in_pcbdetach(inp);
1.1 cgd 564: break;
565:
566: case PRU_BIND:
1.29 mycroft 567: error = rip_bind(inp, nam);
1.27 mycroft 568: break;
569:
570: case PRU_LISTEN:
571: error = EOPNOTSUPP;
572: break;
573:
574: case PRU_CONNECT:
575: error = rip_connect(inp, nam);
576: if (error)
1.13 mycroft 577: break;
1.1 cgd 578: soisconnected(so);
1.13 mycroft 579: break;
580:
581: case PRU_CONNECT2:
582: error = EOPNOTSUPP;
583: break;
584:
1.27 mycroft 585: case PRU_DISCONNECT:
586: soisdisconnected(so);
587: rip_disconnect(inp);
588: break;
589:
1.13 mycroft 590: /*
591: * Mark the connection as being incapable of further input.
592: */
593: case PRU_SHUTDOWN:
594: socantsendmore(so);
595: break;
596:
1.27 mycroft 597: case PRU_RCVD:
598: error = EOPNOTSUPP;
599: break;
600:
1.13 mycroft 601: /*
602: * Ship a packet out. The appropriate raw output
603: * routine handles any massaging necessary.
604: */
605: case PRU_SEND:
1.28 mycroft 606: if (control && control->m_len) {
607: m_freem(control);
608: m_freem(m);
609: error = EINVAL;
610: break;
611: }
612: {
1.27 mycroft 613: if (nam) {
614: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 615: error = EISCONN;
1.28 mycroft 616: goto die;
1.13 mycroft 617: }
1.27 mycroft 618: error = rip_connect(inp, nam);
619: if (error) {
1.28 mycroft 620: die:
1.27 mycroft 621: m_freem(m);
622: break;
623: }
1.13 mycroft 624: } else {
1.27 mycroft 625: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 626: error = ENOTCONN;
1.28 mycroft 627: goto die;
1.13 mycroft 628: }
629: }
1.27 mycroft 630: error = rip_output(m, inp);
631: if (nam)
632: rip_disconnect(inp);
1.28 mycroft 633: }
1.13 mycroft 634: break;
635:
636: case PRU_SENSE:
637: /*
638: * stat: don't bother with a blocksize.
639: */
1.27 mycroft 640: splx(s);
1.1 cgd 641: return (0);
1.13 mycroft 642:
643: case PRU_RCVOOB:
1.27 mycroft 644: error = EOPNOTSUPP;
645: break;
646:
1.13 mycroft 647: case PRU_SENDOOB:
1.28 mycroft 648: m_freem(control);
1.27 mycroft 649: m_freem(m);
1.13 mycroft 650: error = EOPNOTSUPP;
651: break;
652:
653: case PRU_SOCKADDR:
654: in_setsockaddr(inp, nam);
655: break;
656:
657: case PRU_PEERADDR:
658: in_setpeeraddr(inp, nam);
659: break;
660:
661: default:
662: panic("rip_usrreq");
1.1 cgd 663: }
1.27 mycroft 664:
1.22 pk 665: release:
1.27 mycroft 666: splx(s);
1.1 cgd 667: return (error);
668: }
1.84 atatat 669:
670: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
671: {
672:
673: sysctl_createv(clog, 0, NULL, NULL,
674: CTLFLAG_PERMANENT,
675: CTLTYPE_NODE, "net", NULL,
676: NULL, 0, NULL, 0,
677: CTL_NET, CTL_EOL);
678: sysctl_createv(clog, 0, NULL, NULL,
679: CTLFLAG_PERMANENT,
680: CTLTYPE_NODE, "inet", NULL,
681: NULL, 0, NULL, 0,
682: CTL_NET, PF_INET, CTL_EOL);
683: sysctl_createv(clog, 0, NULL, NULL,
684: CTLFLAG_PERMANENT,
685: CTLTYPE_NODE, "raw",
686: SYSCTL_DESCR("Raw IPv4 settings"),
687: NULL, 0, NULL, 0,
688: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
689:
690: sysctl_createv(clog, 0, NULL, NULL,
691: CTLFLAG_PERMANENT,
1.86 atatat 692: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 693: SYSCTL_DESCR("Raw IPv4 control block list"),
694: sysctl_inpcblist, 0, &rawcbtable, 0,
695: CTL_NET, PF_INET, IPPROTO_RAW,
696: CTL_CREATE, CTL_EOL);
697: }
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