Annotation of src/sys/netinet/raw_ip.c, Revision 1.100.6.1
1.100.6.1! mjf 1: /* $NetBSD: raw_ip.c,v 1.101 2007/11/27 22:45:29 christos 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>
1.100.6.1! mjf 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.101 2007/11/27 22:45:29 christos 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:
1.100 dyoung 134: static void
135: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
136: int hlen, struct mbuf *opts, struct mbuf *n)
137: {
138: if (last->inp_flags & INP_NOHEADER)
139: m_adj(n, hlen);
140: if (last->inp_flags & INP_CONTROLOPTS ||
141: last->inp_socket->so_options & SO_TIMESTAMP)
142: ip_savecontrol(last, &opts, ip, n);
143: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
144: /* should notify about lost packet */
145: m_freem(n);
146: if (opts)
147: m_freem(opts);
148: } else
149: sorwakeup(last->inp_socket);
150: }
151:
1.1 cgd 152: /*
153: * Setup generic address and protocol structures
154: * for raw_input routine, then pass them along with
155: * mbuf chain.
156: */
1.9 mycroft 157: void
1.24 christos 158: rip_input(struct mbuf *m, ...)
1.1 cgd 159: {
1.100 dyoung 160: int hlen, proto;
1.53 augustss 161: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 162: struct inpcb_hdr *inph;
1.53 augustss 163: struct inpcb *inp;
1.97 dyoung 164: struct inpcb *last = NULL;
165: struct mbuf *n, *opts = NULL;
1.32 mycroft 166: struct sockaddr_in ripsrc;
1.43 itojun 167: va_list ap;
168:
169: va_start(ap, m);
1.64 simonb 170: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 171: proto = va_arg(ap, int);
172: va_end(ap);
1.1 cgd 173:
1.97 dyoung 174: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 175:
176: /*
177: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 178: * XXX to have the header length subtracted, and in host order.
179: * XXX ip_off is also expected to be host order.
1.42 thorpej 180: */
1.100 dyoung 181: hlen = ip->ip_hl << 2;
182: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 183: NTOHS(ip->ip_off);
1.32 mycroft 184:
1.75 itojun 185: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
186: inp = (struct inpcb *)inph;
187: if (inp->inp_af != AF_INET)
188: continue;
1.43 itojun 189: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 190: continue;
1.32 mycroft 191: if (!in_nullhost(inp->inp_laddr) &&
192: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 193: continue;
1.32 mycroft 194: if (!in_nullhost(inp->inp_faddr) &&
195: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 196: continue;
1.97 dyoung 197: if (last == NULL)
198: ;
1.72 jonathan 199: #if defined(IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 200: /* check AH/ESP integrity. */
201: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
202: ipsecstat.in_polvio++;
203: /* do not inject data to pcb */
204: }
205: #endif /*IPSEC*/
1.99 dyoung 206: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 207: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
208: n);
1.97 dyoung 209: opts = NULL;
1.13 mycroft 210: }
1.36 thorpej 211: last = inp;
1.13 mycroft 212: }
1.72 jonathan 213: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 214: /* check AH/ESP integrity. */
1.97 dyoung 215: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 216: m_freem(m);
217: ipsecstat.in_polvio++;
218: ipstat.ips_delivered--;
219: /* do not inject data to pcb */
220: } else
221: #endif /*IPSEC*/
1.100 dyoung 222: if (last != NULL)
223: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
224: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.97 dyoung 225: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
226: 0, 0);
227: ipstat.ips_noproto++;
228: ipstat.ips_delivered--;
229: } else
230: m_freem(m);
1.43 itojun 231: return;
1.60 itojun 232: }
233:
234: int
1.83 perry 235: rip_pcbnotify(struct inpcbtable *table,
236: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
237: void (*notify)(struct inpcb *, int))
1.60 itojun 238: {
239: struct inpcb *inp, *ninp;
240: int nmatch;
241:
242: nmatch = 0;
1.75 itojun 243: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 244: inp != (struct inpcb *)&table->inpt_queue;
245: inp = ninp) {
1.75 itojun 246: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
247: if (inp->inp_af != AF_INET)
248: continue;
1.60 itojun 249: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
250: continue;
251: if (in_hosteq(inp->inp_faddr, faddr) &&
252: in_hosteq(inp->inp_laddr, laddr)) {
253: (*notify)(inp, errno);
254: nmatch++;
255: }
256: }
257:
258: return nmatch;
259: }
260:
261: void *
1.95 dyoung 262: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 263: {
264: struct ip *ip = v;
1.82 perry 265: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 266: int errno;
267:
268: if (sa->sa_family != AF_INET ||
269: sa->sa_len != sizeof(struct sockaddr_in))
270: return NULL;
271: if ((unsigned)cmd >= PRC_NCMDS)
272: return NULL;
273: errno = inetctlerrmap[cmd];
274: if (PRC_IS_REDIRECT(cmd))
275: notify = in_rtchange, ip = 0;
276: else if (cmd == PRC_HOSTDEAD)
277: ip = 0;
278: else if (errno == 0)
279: return NULL;
280: if (ip) {
1.95 dyoung 281: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 282: ip->ip_src, ip->ip_p, errno, notify);
283:
284: /* XXX mapped address case */
285: } else
1.95 dyoung 286: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 287: notify);
288: return NULL;
1.1 cgd 289: }
290:
291: /*
292: * Generate IP header and pass packet to ip_output.
293: * Tack on options user may have setup with control call.
294: */
1.9 mycroft 295: int
1.24 christos 296: rip_output(struct mbuf *m, ...)
297: {
1.53 augustss 298: struct inpcb *inp;
299: struct ip *ip;
1.10 mycroft 300: struct mbuf *opts;
1.24 christos 301: int flags;
302: va_list ap;
303:
304: va_start(ap, m);
1.27 mycroft 305: inp = va_arg(ap, struct inpcb *);
1.24 christos 306: va_end(ap);
307:
1.27 mycroft 308: flags =
1.37 matt 309: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
310: | IP_RETURNMTU;
1.1 cgd 311:
312: /*
313: * If the user handed us a complete IP packet, use it.
314: * Otherwise, allocate an mbuf for a header and fill it in.
315: */
1.13 mycroft 316: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 317: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
318: m_freem(m);
319: return (EMSGSIZE);
320: }
1.68 itojun 321: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
322: if (!m)
323: return (ENOBUFS);
1.1 cgd 324: ip = mtod(m, struct ip *);
325: ip->ip_tos = 0;
1.62 itojun 326: ip->ip_off = htons(0);
1.13 mycroft 327: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 328: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 329: ip->ip_src = inp->inp_laddr;
1.27 mycroft 330: ip->ip_dst = inp->inp_faddr;
1.1 cgd 331: ip->ip_ttl = MAXTTL;
1.13 mycroft 332: opts = inp->inp_options;
333: } else {
1.35 thorpej 334: if (m->m_pkthdr.len > IP_MAXPACKET) {
335: m_freem(m);
336: return (EMSGSIZE);
337: }
1.13 mycroft 338: ip = mtod(m, struct ip *);
1.65 thorpej 339:
340: /*
341: * If the mbuf is read-only, we need to allocate
342: * a new mbuf for the header, since we need to
343: * modify the header.
344: */
345: if (M_READONLY(m)) {
346: int hlen = ip->ip_hl << 2;
347:
348: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
349: if (m == NULL)
350: return (ENOMEM); /* XXX */
351: ip = mtod(m, struct ip *);
352: }
353:
1.62 itojun 354: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 355: if (m->m_pkthdr.len != ip->ip_len) {
356: m_freem(m);
357: return (EINVAL);
358: }
1.62 itojun 359: HTONS(ip->ip_len);
360: HTONS(ip->ip_off);
1.13 mycroft 361: if (ip->ip_id == 0)
1.77 jonathan 362: ip->ip_id = ip_newid();
1.13 mycroft 363: opts = NULL;
364: /* XXX prevent ip_output from overwriting header fields */
365: flags |= IP_RAWOUTPUT;
366: ipstat.ips_rawout++;
1.1 cgd 367: }
1.62 itojun 368: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 369: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 370: }
371:
372: /*
373: * Raw IP socket option processing.
374: */
1.9 mycroft 375: int
1.83 perry 376: rip_ctloutput(int op, struct socket *so, int level, int optname,
377: struct mbuf **m)
1.1 cgd 378: {
1.53 augustss 379: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 380: int error = 0;
1.1 cgd 381:
1.100 dyoung 382: if (level == SOL_SOCKET && optname == SO_NOHEADER) {
383: if (op == PRCO_GETOPT) {
384: *m = m_intopt(so,
385: (inp->inp_flags & INP_NOHEADER) ? 1 : 0);
386: return 0;
1.100.6.1! mjf 387: } else if (*m == NULL || (*m)->m_len != sizeof(int))
1.100 dyoung 388: error = EINVAL;
389: else if (*mtod(*m, int *)) {
390: inp->inp_flags &= ~INP_HDRINCL;
391: inp->inp_flags |= INP_NOHEADER;
392: } else
393: inp->inp_flags &= ~INP_NOHEADER;
394: goto free_m;
395: } else if (level != IPPROTO_IP)
396: return ip_ctloutput(op, so, level, optname, m);
397:
398: switch (op) {
1.31 mycroft 399:
400: case PRCO_SETOPT:
401: switch (optname) {
402: case IP_HDRINCL:
1.100.6.1! mjf 403: if (*m == NULL || (*m)->m_len != sizeof(int))
1.31 mycroft 404: error = EINVAL;
1.100 dyoung 405: else if (*mtod(*m, int *))
406: inp->inp_flags |= INP_HDRINCL;
407: else
408: inp->inp_flags &= ~INP_HDRINCL;
409: goto free_m;
1.31 mycroft 410:
411: #ifdef MROUTING
412: case MRT_INIT:
413: case MRT_DONE:
414: case MRT_ADD_VIF:
415: case MRT_DEL_VIF:
416: case MRT_ADD_MFC:
417: case MRT_DEL_MFC:
418: case MRT_ASSERT:
1.81 manu 419: case MRT_API_CONFIG:
420: case MRT_ADD_BW_UPCALL:
421: case MRT_DEL_BW_UPCALL:
1.31 mycroft 422: error = ip_mrouter_set(so, optname, m);
423: break;
424: #endif
425:
426: default:
427: error = ip_ctloutput(op, so, level, optname, m);
428: break;
1.13 mycroft 429: }
430: break;
1.1 cgd 431:
1.31 mycroft 432: case PRCO_GETOPT:
433: switch (optname) {
434: case IP_HDRINCL:
1.100 dyoung 435: *m = m_intopt(so, inp->inp_flags & INP_HDRINCL ? 1 : 0);
1.31 mycroft 436: break;
437:
1.6 hpeyerl 438: #ifdef MROUTING
1.31 mycroft 439: case MRT_VERSION:
440: case MRT_ASSERT:
1.81 manu 441: case MRT_API_SUPPORT:
442: case MRT_API_CONFIG:
1.31 mycroft 443: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 444: break;
1.31 mycroft 445: #endif
446:
1.18 mycroft 447: default:
1.31 mycroft 448: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 449: break;
450: }
1.31 mycroft 451: break;
1.1 cgd 452: }
1.100 dyoung 453: return error;
454: free_m:
455: if (op == PRCO_SETOPT && *m != NULL)
456: (void)m_free(*m);
457: return error;
1.1 cgd 458: }
459:
1.27 mycroft 460: int
1.83 perry 461: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 462: {
463: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
464:
465: if (nam->m_len != sizeof(*addr))
466: return (EINVAL);
1.58 matt 467: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 468: return (EADDRNOTAVAIL);
469: if (addr->sin_family != AF_INET &&
470: addr->sin_family != AF_IMPLINK)
471: return (EAFNOSUPPORT);
1.32 mycroft 472: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 473: ifa_ifwithaddr(sintosa(addr)) == 0)
474: return (EADDRNOTAVAIL);
475: inp->inp_laddr = addr->sin_addr;
476: return (0);
477: }
478:
479: int
1.83 perry 480: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 481: {
482: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
483:
484: if (nam->m_len != sizeof(*addr))
485: return (EINVAL);
1.58 matt 486: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 487: return (EADDRNOTAVAIL);
488: if (addr->sin_family != AF_INET &&
489: addr->sin_family != AF_IMPLINK)
490: return (EAFNOSUPPORT);
491: inp->inp_faddr = addr->sin_addr;
492: return (0);
493: }
494:
495: void
1.83 perry 496: rip_disconnect(struct inpcb *inp)
1.27 mycroft 497: {
498:
1.32 mycroft 499: inp->inp_faddr = zeroin_addr;
1.27 mycroft 500: }
501:
1.13 mycroft 502: u_long rip_sendspace = RIPSNDQ;
503: u_long rip_recvspace = RIPRCVQ;
504:
1.1 cgd 505: /*ARGSUSED*/
1.9 mycroft 506: int
1.83 perry 507: rip_usrreq(struct socket *so, int req,
1.88 christos 508: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 509: {
1.53 augustss 510: struct inpcb *inp;
1.27 mycroft 511: int s;
1.53 augustss 512: int error = 0;
1.13 mycroft 513: #ifdef MROUTING
1.6 hpeyerl 514: extern struct socket *ip_mrouter;
515: #endif
1.27 mycroft 516:
1.22 pk 517: if (req == PRU_CONTROL)
1.96 christos 518: return (in_control(so, (long)m, (void *)nam,
1.90 ad 519: (struct ifnet *)control, l));
1.49 thorpej 520:
1.93 tls 521: s = splsoftnet();
522:
1.50 thorpej 523: if (req == PRU_PURGEIF) {
1.56 itojun 524: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 525: in_purgeif((struct ifnet *)control);
526: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.93 tls 527: splx(s);
1.49 thorpej 528: return (0);
529: }
1.22 pk 530:
1.27 mycroft 531: inp = sotoinpcb(so);
1.28 mycroft 532: #ifdef DIAGNOSTIC
533: if (req != PRU_SEND && req != PRU_SENDOOB && control)
534: panic("rip_usrreq: unexpected control mbuf");
535: #endif
1.27 mycroft 536: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 537: error = EINVAL;
538: goto release;
539: }
540:
1.1 cgd 541: switch (req) {
542:
543: case PRU_ATTACH:
1.27 mycroft 544: if (inp != 0) {
545: error = EISCONN;
546: break;
547: }
1.94 elad 548:
549: if (l == NULL) {
1.13 mycroft 550: error = EACCES;
551: break;
552: }
1.94 elad 553:
554: /* XXX: raw socket permissions are checked in socreate() */
555:
1.27 mycroft 556: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
557: error = soreserve(so, rip_sendspace, rip_recvspace);
558: if (error)
559: break;
560: }
561: error = in_pcballoc(so, &rawcbtable);
562: if (error)
1.13 mycroft 563: break;
1.27 mycroft 564: inp = sotoinpcb(so);
1.17 cgd 565: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 566: break;
567:
568: case PRU_DETACH:
1.13 mycroft 569: #ifdef MROUTING
1.6 hpeyerl 570: if (so == ip_mrouter)
571: ip_mrouter_done();
572: #endif
1.13 mycroft 573: in_pcbdetach(inp);
1.1 cgd 574: break;
575:
576: case PRU_BIND:
1.29 mycroft 577: error = rip_bind(inp, nam);
1.27 mycroft 578: break;
579:
580: case PRU_LISTEN:
581: error = EOPNOTSUPP;
582: break;
583:
584: case PRU_CONNECT:
585: error = rip_connect(inp, nam);
586: if (error)
1.13 mycroft 587: break;
1.1 cgd 588: soisconnected(so);
1.13 mycroft 589: break;
590:
591: case PRU_CONNECT2:
592: error = EOPNOTSUPP;
593: break;
594:
1.27 mycroft 595: case PRU_DISCONNECT:
596: soisdisconnected(so);
597: rip_disconnect(inp);
598: break;
599:
1.13 mycroft 600: /*
601: * Mark the connection as being incapable of further input.
602: */
603: case PRU_SHUTDOWN:
604: socantsendmore(so);
605: break;
606:
1.27 mycroft 607: case PRU_RCVD:
608: error = EOPNOTSUPP;
609: break;
610:
1.13 mycroft 611: /*
612: * Ship a packet out. The appropriate raw output
613: * routine handles any massaging necessary.
614: */
615: case PRU_SEND:
1.28 mycroft 616: if (control && control->m_len) {
617: m_freem(control);
618: m_freem(m);
619: error = EINVAL;
620: break;
621: }
622: {
1.27 mycroft 623: if (nam) {
624: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 625: error = EISCONN;
1.28 mycroft 626: goto die;
1.13 mycroft 627: }
1.27 mycroft 628: error = rip_connect(inp, nam);
629: if (error) {
1.28 mycroft 630: die:
1.27 mycroft 631: m_freem(m);
632: break;
633: }
1.13 mycroft 634: } else {
1.27 mycroft 635: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 636: error = ENOTCONN;
1.28 mycroft 637: goto die;
1.13 mycroft 638: }
639: }
1.27 mycroft 640: error = rip_output(m, inp);
641: if (nam)
642: rip_disconnect(inp);
1.28 mycroft 643: }
1.13 mycroft 644: break;
645:
646: case PRU_SENSE:
647: /*
648: * stat: don't bother with a blocksize.
649: */
1.27 mycroft 650: splx(s);
1.1 cgd 651: return (0);
1.13 mycroft 652:
653: case PRU_RCVOOB:
1.27 mycroft 654: error = EOPNOTSUPP;
655: break;
656:
1.13 mycroft 657: case PRU_SENDOOB:
1.28 mycroft 658: m_freem(control);
1.27 mycroft 659: m_freem(m);
1.13 mycroft 660: error = EOPNOTSUPP;
661: break;
662:
663: case PRU_SOCKADDR:
664: in_setsockaddr(inp, nam);
665: break;
666:
667: case PRU_PEERADDR:
668: in_setpeeraddr(inp, nam);
669: break;
670:
671: default:
672: panic("rip_usrreq");
1.1 cgd 673: }
1.27 mycroft 674:
1.22 pk 675: release:
1.27 mycroft 676: splx(s);
1.1 cgd 677: return (error);
678: }
1.84 atatat 679:
680: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
681: {
682:
683: sysctl_createv(clog, 0, NULL, NULL,
684: CTLFLAG_PERMANENT,
685: CTLTYPE_NODE, "net", NULL,
686: NULL, 0, NULL, 0,
687: CTL_NET, CTL_EOL);
688: sysctl_createv(clog, 0, NULL, NULL,
689: CTLFLAG_PERMANENT,
690: CTLTYPE_NODE, "inet", NULL,
691: NULL, 0, NULL, 0,
692: CTL_NET, PF_INET, CTL_EOL);
693: sysctl_createv(clog, 0, NULL, NULL,
694: CTLFLAG_PERMANENT,
695: CTLTYPE_NODE, "raw",
696: SYSCTL_DESCR("Raw IPv4 settings"),
697: NULL, 0, NULL, 0,
698: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
699:
700: sysctl_createv(clog, 0, NULL, NULL,
701: CTLFLAG_PERMANENT,
1.86 atatat 702: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 703: SYSCTL_DESCR("Raw IPv4 control block list"),
704: sysctl_inpcblist, 0, &rawcbtable, 0,
705: CTL_NET, PF_INET, IPPROTO_RAW,
706: CTL_CREATE, CTL_EOL);
707: }
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