Annotation of src/sys/netinet/raw_ip.c, Revision 1.113
1.113 ! drochner 1: /* $NetBSD: raw_ip.c,v 1.112 2011/07/17 20:54:53 joerg 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>
1.113 ! drochner 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.112 2011/07/17 20:54:53 joerg Exp $");
1.40 scottr 65:
1.78 jonathan 66: #include "opt_inet.h"
1.109 christos 67: #include "opt_compat_netbsd.h"
1.45 thorpej 68: #include "opt_ipsec.h"
1.40 scottr 69: #include "opt_mrouting.h"
1.1 cgd 70:
1.7 mycroft 71: #include <sys/param.h>
1.84 atatat 72: #include <sys/sysctl.h>
1.7 mycroft 73: #include <sys/malloc.h>
74: #include <sys/mbuf.h>
75: #include <sys/socket.h>
76: #include <sys/protosw.h>
77: #include <sys/socketvar.h>
78: #include <sys/errno.h>
1.13 mycroft 79: #include <sys/systm.h>
1.26 mycroft 80: #include <sys/proc.h>
1.89 elad 81: #include <sys/kauth.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>
1.105 thorpej 90: #include <netinet/ip_private.h>
1.13 mycroft 91: #include <netinet/ip_mroute.h>
1.44 darrenr 92: #include <netinet/ip_icmp.h>
1.7 mycroft 93: #include <netinet/in_pcb.h>
1.87 yamt 94: #include <netinet/in_proto.h>
1.24 christos 95: #include <netinet/in_var.h>
96:
1.113 ! drochner 97: #ifdef KAME_IPSEC
1.43 itojun 98: #include <netinet6/ipsec.h>
1.106 thorpej 99: #include <netinet6/ipsec_private.h>
1.113 ! drochner 100: #endif /* KAME_IPSEC */
1.43 itojun 101:
1.72 jonathan 102: #ifdef FAST_IPSEC
103: #include <netipsec/ipsec.h>
1.106 thorpej 104: #include <netipsec/ipsec_var.h>
105: #include <netipsec/ipsec_private.h>
106: #endif /* FAST_IPSEC */
1.72 jonathan 107:
1.109 christos 108: #ifdef COMPAT_50
109: #include <compat/sys/socket.h>
110: #endif
111:
1.20 mycroft 112: struct inpcbtable rawcbtable;
1.30 pk 113:
1.82 perry 114: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
115: struct in_addr, int, int, void (*)(struct inpcb *, int));
116: int rip_bind(struct inpcb *, struct mbuf *);
117: int rip_connect(struct inpcb *, struct mbuf *);
118: void rip_disconnect(struct inpcb *);
1.13 mycroft 119:
1.110 pooka 120: static void sysctl_net_inet_raw_setup(struct sysctllog **);
121:
1.13 mycroft 122: /*
123: * Nominal space allocated to a raw ip socket.
124: */
125: #define RIPSNDQ 8192
126: #define RIPRCVQ 8192
1.1 cgd 127:
128: /*
129: * Raw interface to IP protocol.
130: */
1.13 mycroft 131:
132: /*
133: * Initialize raw connection block q.
134: */
135: void
1.83 perry 136: rip_init(void)
1.13 mycroft 137: {
138:
1.110 pooka 139: sysctl_net_inet_raw_setup(NULL);
1.33 mycroft 140: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 141: }
142:
1.100 dyoung 143: static void
144: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
145: int hlen, struct mbuf *opts, struct mbuf *n)
146: {
147: if (last->inp_flags & INP_NOHEADER)
148: m_adj(n, hlen);
1.109 christos 149: if (last->inp_flags & INP_CONTROLOPTS
150: #ifdef SO_OTIMESTAMP
151: || last->inp_socket->so_options & SO_OTIMESTAMP
152: #endif
153: || last->inp_socket->so_options & SO_TIMESTAMP)
1.100 dyoung 154: ip_savecontrol(last, &opts, ip, n);
155: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
156: /* should notify about lost packet */
157: m_freem(n);
158: if (opts)
159: m_freem(opts);
160: } else
161: sorwakeup(last->inp_socket);
162: }
163:
1.1 cgd 164: /*
165: * Setup generic address and protocol structures
166: * for raw_input routine, then pass them along with
167: * mbuf chain.
168: */
1.9 mycroft 169: void
1.24 christos 170: rip_input(struct mbuf *m, ...)
1.1 cgd 171: {
1.100 dyoung 172: int hlen, proto;
1.53 augustss 173: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 174: struct inpcb_hdr *inph;
1.53 augustss 175: struct inpcb *inp;
1.97 dyoung 176: struct inpcb *last = NULL;
177: struct mbuf *n, *opts = NULL;
1.32 mycroft 178: struct sockaddr_in ripsrc;
1.43 itojun 179: va_list ap;
180:
181: va_start(ap, m);
1.64 simonb 182: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 183: proto = va_arg(ap, int);
184: va_end(ap);
1.1 cgd 185:
1.97 dyoung 186: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 187:
188: /*
189: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 190: * XXX to have the header length subtracted, and in host order.
191: * XXX ip_off is also expected to be host order.
1.42 thorpej 192: */
1.100 dyoung 193: hlen = ip->ip_hl << 2;
194: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 195: NTOHS(ip->ip_off);
1.32 mycroft 196:
1.75 itojun 197: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
198: inp = (struct inpcb *)inph;
199: if (inp->inp_af != AF_INET)
200: continue;
1.43 itojun 201: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 202: continue;
1.32 mycroft 203: if (!in_nullhost(inp->inp_laddr) &&
204: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 205: continue;
1.32 mycroft 206: if (!in_nullhost(inp->inp_faddr) &&
207: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 208: continue;
1.97 dyoung 209: if (last == NULL)
210: ;
1.113 ! drochner 211: #if defined(KAME_IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 212: /* check AH/ESP integrity. */
213: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
1.106 thorpej 214: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 215: /* do not inject data to pcb */
216: }
217: #endif /*IPSEC*/
1.99 dyoung 218: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 219: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
220: n);
1.97 dyoung 221: opts = NULL;
1.13 mycroft 222: }
1.36 thorpej 223: last = inp;
1.13 mycroft 224: }
1.113 ! drochner 225: #if defined(KAME_IPSEC) || defined(FAST_IPSEC)
1.55 itojun 226: /* check AH/ESP integrity. */
1.97 dyoung 227: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 228: m_freem(m);
1.106 thorpej 229: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 230: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 231: /* do not inject data to pcb */
232: } else
233: #endif /*IPSEC*/
1.100 dyoung 234: if (last != NULL)
235: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
236: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 237: uint64_t *ips;
238:
1.97 dyoung 239: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
240: 0, 0);
1.105 thorpej 241: ips = IP_STAT_GETREF();
242: ips[IP_STAT_NOPROTO]++;
243: ips[IP_STAT_DELIVERED]--;
244: IP_STAT_PUTREF();
1.97 dyoung 245: } else
246: m_freem(m);
1.43 itojun 247: return;
1.60 itojun 248: }
249:
250: int
1.83 perry 251: rip_pcbnotify(struct inpcbtable *table,
252: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
253: void (*notify)(struct inpcb *, int))
1.60 itojun 254: {
255: struct inpcb *inp, *ninp;
256: int nmatch;
257:
258: nmatch = 0;
1.75 itojun 259: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 260: inp != (struct inpcb *)&table->inpt_queue;
261: inp = ninp) {
1.75 itojun 262: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
263: if (inp->inp_af != AF_INET)
264: continue;
1.60 itojun 265: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
266: continue;
267: if (in_hosteq(inp->inp_faddr, faddr) &&
268: in_hosteq(inp->inp_laddr, laddr)) {
269: (*notify)(inp, errno);
270: nmatch++;
271: }
272: }
273:
274: return nmatch;
275: }
276:
277: void *
1.95 dyoung 278: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 279: {
280: struct ip *ip = v;
1.82 perry 281: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 282: int errno;
283:
284: if (sa->sa_family != AF_INET ||
285: sa->sa_len != sizeof(struct sockaddr_in))
286: return NULL;
287: if ((unsigned)cmd >= PRC_NCMDS)
288: return NULL;
289: errno = inetctlerrmap[cmd];
290: if (PRC_IS_REDIRECT(cmd))
291: notify = in_rtchange, ip = 0;
292: else if (cmd == PRC_HOSTDEAD)
293: ip = 0;
294: else if (errno == 0)
295: return NULL;
296: if (ip) {
1.95 dyoung 297: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 298: ip->ip_src, ip->ip_p, errno, notify);
299:
300: /* XXX mapped address case */
301: } else
1.95 dyoung 302: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 303: notify);
304: return NULL;
1.1 cgd 305: }
306:
307: /*
308: * Generate IP header and pass packet to ip_output.
309: * Tack on options user may have setup with control call.
310: */
1.9 mycroft 311: int
1.24 christos 312: rip_output(struct mbuf *m, ...)
313: {
1.53 augustss 314: struct inpcb *inp;
315: struct ip *ip;
1.10 mycroft 316: struct mbuf *opts;
1.24 christos 317: int flags;
318: va_list ap;
319:
320: va_start(ap, m);
1.27 mycroft 321: inp = va_arg(ap, struct inpcb *);
1.24 christos 322: va_end(ap);
323:
1.27 mycroft 324: flags =
1.37 matt 325: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
326: | IP_RETURNMTU;
1.1 cgd 327:
328: /*
329: * If the user handed us a complete IP packet, use it.
330: * Otherwise, allocate an mbuf for a header and fill it in.
331: */
1.13 mycroft 332: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 333: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
334: m_freem(m);
335: return (EMSGSIZE);
336: }
1.68 itojun 337: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
338: if (!m)
339: return (ENOBUFS);
1.1 cgd 340: ip = mtod(m, struct ip *);
341: ip->ip_tos = 0;
1.62 itojun 342: ip->ip_off = htons(0);
1.13 mycroft 343: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 344: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 345: ip->ip_src = inp->inp_laddr;
1.27 mycroft 346: ip->ip_dst = inp->inp_faddr;
1.1 cgd 347: ip->ip_ttl = MAXTTL;
1.13 mycroft 348: opts = inp->inp_options;
349: } else {
1.35 thorpej 350: if (m->m_pkthdr.len > IP_MAXPACKET) {
351: m_freem(m);
352: return (EMSGSIZE);
353: }
1.13 mycroft 354: ip = mtod(m, struct ip *);
1.65 thorpej 355:
356: /*
357: * If the mbuf is read-only, we need to allocate
358: * a new mbuf for the header, since we need to
359: * modify the header.
360: */
361: if (M_READONLY(m)) {
362: int hlen = ip->ip_hl << 2;
363:
364: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
365: if (m == NULL)
366: return (ENOMEM); /* XXX */
367: ip = mtod(m, struct ip *);
368: }
369:
1.62 itojun 370: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 371: if (m->m_pkthdr.len != ip->ip_len) {
372: m_freem(m);
373: return (EINVAL);
374: }
1.62 itojun 375: HTONS(ip->ip_len);
376: HTONS(ip->ip_off);
1.103 matt 377: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
378: flags |= IP_NOIPNEWID;
1.13 mycroft 379: opts = NULL;
380: /* XXX prevent ip_output from overwriting header fields */
381: flags |= IP_RAWOUTPUT;
1.105 thorpej 382: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 383: }
1.62 itojun 384: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 385: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 386: }
387:
388: /*
389: * Raw IP socket option processing.
390: */
1.9 mycroft 391: int
1.108 plunky 392: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 393: {
1.53 augustss 394: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 395: int error = 0;
1.108 plunky 396: int optval;
1.1 cgd 397:
1.108 plunky 398: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 399: if (op == PRCO_GETOPT) {
1.108 plunky 400: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
401: error = sockopt_set(sopt, &optval, sizeof(optval));
402: } else if (op == PRCO_SETOPT) {
403: error = sockopt_getint(sopt, &optval);
404: if (error)
405: goto out;
406: if (optval) {
407: inp->inp_flags &= ~INP_HDRINCL;
408: inp->inp_flags |= INP_NOHEADER;
409: } else
410: inp->inp_flags &= ~INP_NOHEADER;
411: }
412: goto out;
413: } else if (sopt->sopt_level != IPPROTO_IP)
414: return ip_ctloutput(op, so, sopt);
1.100 dyoung 415:
416: switch (op) {
1.31 mycroft 417:
418: case PRCO_SETOPT:
1.108 plunky 419: switch (sopt->sopt_name) {
1.31 mycroft 420: case IP_HDRINCL:
1.108 plunky 421: error = sockopt_getint(sopt, &optval);
422: if (error)
423: break;
424: if (optval)
1.100 dyoung 425: inp->inp_flags |= INP_HDRINCL;
426: else
427: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 428: break;
1.31 mycroft 429:
430: #ifdef MROUTING
431: case MRT_INIT:
432: case MRT_DONE:
433: case MRT_ADD_VIF:
434: case MRT_DEL_VIF:
435: case MRT_ADD_MFC:
436: case MRT_DEL_MFC:
437: case MRT_ASSERT:
1.81 manu 438: case MRT_API_CONFIG:
439: case MRT_ADD_BW_UPCALL:
440: case MRT_DEL_BW_UPCALL:
1.108 plunky 441: error = ip_mrouter_set(so, sopt);
1.31 mycroft 442: break;
443: #endif
444:
445: default:
1.108 plunky 446: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 447: break;
1.13 mycroft 448: }
449: break;
1.1 cgd 450:
1.31 mycroft 451: case PRCO_GETOPT:
1.108 plunky 452: switch (sopt->sopt_name) {
1.31 mycroft 453: case IP_HDRINCL:
1.108 plunky 454: optval = inp->inp_flags & INP_HDRINCL;
455: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 456: break;
457:
1.6 hpeyerl 458: #ifdef MROUTING
1.31 mycroft 459: case MRT_VERSION:
460: case MRT_ASSERT:
1.81 manu 461: case MRT_API_SUPPORT:
462: case MRT_API_CONFIG:
1.108 plunky 463: error = ip_mrouter_get(so, sopt);
1.18 mycroft 464: break;
1.31 mycroft 465: #endif
466:
1.18 mycroft 467: default:
1.108 plunky 468: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 469: break;
470: }
1.31 mycroft 471: break;
1.1 cgd 472: }
1.108 plunky 473: out:
1.100 dyoung 474: return error;
1.1 cgd 475: }
476:
1.27 mycroft 477: int
1.83 perry 478: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 479: {
480: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
481:
482: if (nam->m_len != sizeof(*addr))
483: return (EINVAL);
1.58 matt 484: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 485: return (EADDRNOTAVAIL);
486: if (addr->sin_family != AF_INET &&
487: addr->sin_family != AF_IMPLINK)
488: return (EAFNOSUPPORT);
1.32 mycroft 489: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 490: ifa_ifwithaddr(sintosa(addr)) == 0)
491: return (EADDRNOTAVAIL);
492: inp->inp_laddr = addr->sin_addr;
493: return (0);
494: }
495:
496: int
1.83 perry 497: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 498: {
499: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
500:
501: if (nam->m_len != sizeof(*addr))
502: return (EINVAL);
1.58 matt 503: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 504: return (EADDRNOTAVAIL);
505: if (addr->sin_family != AF_INET &&
506: addr->sin_family != AF_IMPLINK)
507: return (EAFNOSUPPORT);
508: inp->inp_faddr = addr->sin_addr;
509: return (0);
510: }
511:
512: void
1.83 perry 513: rip_disconnect(struct inpcb *inp)
1.27 mycroft 514: {
515:
1.32 mycroft 516: inp->inp_faddr = zeroin_addr;
1.27 mycroft 517: }
518:
1.13 mycroft 519: u_long rip_sendspace = RIPSNDQ;
520: u_long rip_recvspace = RIPRCVQ;
521:
1.1 cgd 522: /*ARGSUSED*/
1.9 mycroft 523: int
1.83 perry 524: rip_usrreq(struct socket *so, int req,
1.88 christos 525: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 526: {
1.53 augustss 527: struct inpcb *inp;
1.27 mycroft 528: int s;
1.53 augustss 529: int error = 0;
1.13 mycroft 530: #ifdef MROUTING
1.6 hpeyerl 531: extern struct socket *ip_mrouter;
532: #endif
1.27 mycroft 533:
1.22 pk 534: if (req == PRU_CONTROL)
1.111 dyoung 535: return in_control(so, (long)m, nam, (struct ifnet *)control, l);
1.49 thorpej 536:
1.93 tls 537: s = splsoftnet();
538:
1.50 thorpej 539: if (req == PRU_PURGEIF) {
1.107 ad 540: mutex_enter(softnet_lock);
1.56 itojun 541: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 542: in_purgeif((struct ifnet *)control);
543: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.107 ad 544: mutex_exit(softnet_lock);
1.93 tls 545: splx(s);
1.49 thorpej 546: return (0);
547: }
1.22 pk 548:
1.27 mycroft 549: inp = sotoinpcb(so);
1.28 mycroft 550: #ifdef DIAGNOSTIC
551: if (req != PRU_SEND && req != PRU_SENDOOB && control)
552: panic("rip_usrreq: unexpected control mbuf");
553: #endif
1.111 dyoung 554: if (inp == NULL && req != PRU_ATTACH) {
1.22 pk 555: error = EINVAL;
556: goto release;
557: }
558:
1.1 cgd 559: switch (req) {
560:
561: case PRU_ATTACH:
1.107 ad 562: sosetlock(so);
1.27 mycroft 563: if (inp != 0) {
564: error = EISCONN;
565: break;
566: }
1.94 elad 567:
568: if (l == NULL) {
1.13 mycroft 569: error = EACCES;
570: break;
571: }
1.94 elad 572:
573: /* XXX: raw socket permissions are checked in socreate() */
574:
1.27 mycroft 575: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
576: error = soreserve(so, rip_sendspace, rip_recvspace);
577: if (error)
578: break;
579: }
580: error = in_pcballoc(so, &rawcbtable);
581: if (error)
1.13 mycroft 582: break;
1.27 mycroft 583: inp = sotoinpcb(so);
1.17 cgd 584: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 585: break;
586:
587: case PRU_DETACH:
1.13 mycroft 588: #ifdef MROUTING
1.6 hpeyerl 589: if (so == ip_mrouter)
590: ip_mrouter_done();
591: #endif
1.13 mycroft 592: in_pcbdetach(inp);
1.1 cgd 593: break;
594:
595: case PRU_BIND:
1.29 mycroft 596: error = rip_bind(inp, nam);
1.27 mycroft 597: break;
598:
599: case PRU_LISTEN:
600: error = EOPNOTSUPP;
601: break;
602:
603: case PRU_CONNECT:
604: error = rip_connect(inp, nam);
605: if (error)
1.13 mycroft 606: break;
1.1 cgd 607: soisconnected(so);
1.13 mycroft 608: break;
609:
610: case PRU_CONNECT2:
611: error = EOPNOTSUPP;
612: break;
613:
1.27 mycroft 614: case PRU_DISCONNECT:
615: soisdisconnected(so);
616: rip_disconnect(inp);
617: break;
618:
1.13 mycroft 619: /*
620: * Mark the connection as being incapable of further input.
621: */
622: case PRU_SHUTDOWN:
623: socantsendmore(so);
624: break;
625:
1.27 mycroft 626: case PRU_RCVD:
627: error = EOPNOTSUPP;
628: break;
629:
1.13 mycroft 630: /*
631: * Ship a packet out. The appropriate raw output
632: * routine handles any massaging necessary.
633: */
634: case PRU_SEND:
1.28 mycroft 635: if (control && control->m_len) {
636: m_freem(control);
637: m_freem(m);
638: error = EINVAL;
639: break;
640: }
641: {
1.27 mycroft 642: if (nam) {
643: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 644: error = EISCONN;
1.28 mycroft 645: goto die;
1.13 mycroft 646: }
1.27 mycroft 647: error = rip_connect(inp, nam);
648: if (error) {
1.28 mycroft 649: die:
1.27 mycroft 650: m_freem(m);
651: break;
652: }
1.13 mycroft 653: } else {
1.27 mycroft 654: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 655: error = ENOTCONN;
1.28 mycroft 656: goto die;
1.13 mycroft 657: }
658: }
1.27 mycroft 659: error = rip_output(m, inp);
660: if (nam)
661: rip_disconnect(inp);
1.28 mycroft 662: }
1.13 mycroft 663: break;
664:
665: case PRU_SENSE:
666: /*
667: * stat: don't bother with a blocksize.
668: */
1.27 mycroft 669: splx(s);
1.1 cgd 670: return (0);
1.13 mycroft 671:
672: case PRU_RCVOOB:
1.27 mycroft 673: error = EOPNOTSUPP;
674: break;
675:
1.13 mycroft 676: case PRU_SENDOOB:
1.28 mycroft 677: m_freem(control);
1.27 mycroft 678: m_freem(m);
1.13 mycroft 679: error = EOPNOTSUPP;
680: break;
681:
682: case PRU_SOCKADDR:
683: in_setsockaddr(inp, nam);
684: break;
685:
686: case PRU_PEERADDR:
687: in_setpeeraddr(inp, nam);
688: break;
689:
690: default:
691: panic("rip_usrreq");
1.1 cgd 692: }
1.27 mycroft 693:
1.22 pk 694: release:
1.27 mycroft 695: splx(s);
1.1 cgd 696: return (error);
697: }
1.84 atatat 698:
1.110 pooka 699: static void
700: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 701: {
702:
703: sysctl_createv(clog, 0, NULL, NULL,
704: CTLFLAG_PERMANENT,
705: CTLTYPE_NODE, "net", NULL,
706: NULL, 0, NULL, 0,
707: CTL_NET, CTL_EOL);
708: sysctl_createv(clog, 0, NULL, NULL,
709: CTLFLAG_PERMANENT,
710: CTLTYPE_NODE, "inet", NULL,
711: NULL, 0, NULL, 0,
712: CTL_NET, PF_INET, CTL_EOL);
713: sysctl_createv(clog, 0, NULL, NULL,
714: CTLFLAG_PERMANENT,
715: CTLTYPE_NODE, "raw",
716: SYSCTL_DESCR("Raw IPv4 settings"),
717: NULL, 0, NULL, 0,
718: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
719:
720: sysctl_createv(clog, 0, NULL, NULL,
721: CTLFLAG_PERMANENT,
1.86 atatat 722: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 723: SYSCTL_DESCR("Raw IPv4 control block list"),
724: sysctl_inpcblist, 0, &rawcbtable, 0,
725: CTL_NET, PF_INET, IPPROTO_RAW,
726: CTL_CREATE, CTL_EOL);
727: }
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