Annotation of src/sys/netinet/raw_ip.c, Revision 1.105
1.105 ! thorpej 1: /* $NetBSD: raw_ip.c,v 1.104 2008/04/07 06:31:28 thorpej 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>
1.105 ! thorpej 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.104 2008/04/07 06:31:28 thorpej 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>
1.105 ! thorpej 89: #include <netinet/ip_private.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>
1.87 yamt 93: #include <netinet/in_proto.h>
1.24 christos 94: #include <netinet/in_var.h>
95:
96: #include <machine/stdarg.h>
1.13 mycroft 97:
1.43 itojun 98: #ifdef IPSEC
99: #include <netinet6/ipsec.h>
100: #endif /*IPSEC*/
101:
1.72 jonathan 102: #ifdef FAST_IPSEC
103: #include <netipsec/ipsec.h>
1.80 jonathan 104: #include <netipsec/ipsec_var.h> /* XXX ipsecstat namespace */
1.72 jonathan 105: #endif /* FAST_IPSEC*/
106:
1.20 mycroft 107: struct inpcbtable rawcbtable;
1.30 pk 108:
1.82 perry 109: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
110: struct in_addr, int, int, void (*)(struct inpcb *, int));
111: int rip_bind(struct inpcb *, struct mbuf *);
112: int rip_connect(struct inpcb *, struct mbuf *);
113: void rip_disconnect(struct inpcb *);
1.13 mycroft 114:
115: /*
116: * Nominal space allocated to a raw ip socket.
117: */
118: #define RIPSNDQ 8192
119: #define RIPRCVQ 8192
1.1 cgd 120:
121: /*
122: * Raw interface to IP protocol.
123: */
1.13 mycroft 124:
125: /*
126: * Initialize raw connection block q.
127: */
128: void
1.83 perry 129: rip_init(void)
1.13 mycroft 130: {
131:
1.33 mycroft 132: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 133: }
134:
1.100 dyoung 135: static void
136: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
137: int hlen, struct mbuf *opts, struct mbuf *n)
138: {
139: if (last->inp_flags & INP_NOHEADER)
140: m_adj(n, hlen);
141: if (last->inp_flags & INP_CONTROLOPTS ||
142: last->inp_socket->so_options & SO_TIMESTAMP)
143: ip_savecontrol(last, &opts, ip, n);
144: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
145: /* should notify about lost packet */
146: m_freem(n);
147: if (opts)
148: m_freem(opts);
149: } else
150: sorwakeup(last->inp_socket);
151: }
152:
1.1 cgd 153: /*
154: * Setup generic address and protocol structures
155: * for raw_input routine, then pass them along with
156: * mbuf chain.
157: */
1.9 mycroft 158: void
1.24 christos 159: rip_input(struct mbuf *m, ...)
1.1 cgd 160: {
1.100 dyoung 161: int hlen, proto;
1.53 augustss 162: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 163: struct inpcb_hdr *inph;
1.53 augustss 164: struct inpcb *inp;
1.97 dyoung 165: struct inpcb *last = NULL;
166: struct mbuf *n, *opts = NULL;
1.32 mycroft 167: struct sockaddr_in ripsrc;
1.43 itojun 168: va_list ap;
169:
170: va_start(ap, m);
1.64 simonb 171: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 172: proto = va_arg(ap, int);
173: va_end(ap);
1.1 cgd 174:
1.97 dyoung 175: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 176:
177: /*
178: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 179: * XXX to have the header length subtracted, and in host order.
180: * XXX ip_off is also expected to be host order.
1.42 thorpej 181: */
1.100 dyoung 182: hlen = ip->ip_hl << 2;
183: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 184: NTOHS(ip->ip_off);
1.32 mycroft 185:
1.75 itojun 186: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
187: inp = (struct inpcb *)inph;
188: if (inp->inp_af != AF_INET)
189: continue;
1.43 itojun 190: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 191: continue;
1.32 mycroft 192: if (!in_nullhost(inp->inp_laddr) &&
193: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 194: continue;
1.32 mycroft 195: if (!in_nullhost(inp->inp_faddr) &&
196: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 197: continue;
1.97 dyoung 198: if (last == NULL)
199: ;
1.72 jonathan 200: #if defined(IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 201: /* check AH/ESP integrity. */
202: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
203: ipsecstat.in_polvio++;
204: /* do not inject data to pcb */
205: }
206: #endif /*IPSEC*/
1.99 dyoung 207: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 208: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
209: n);
1.97 dyoung 210: opts = NULL;
1.13 mycroft 211: }
1.36 thorpej 212: last = inp;
1.13 mycroft 213: }
1.72 jonathan 214: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 215: /* check AH/ESP integrity. */
1.97 dyoung 216: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 217: m_freem(m);
218: ipsecstat.in_polvio++;
1.105 ! thorpej 219: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 220: /* do not inject data to pcb */
221: } else
222: #endif /*IPSEC*/
1.100 dyoung 223: if (last != NULL)
224: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
225: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 ! thorpej 226: uint64_t *ips;
! 227:
1.97 dyoung 228: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
229: 0, 0);
1.105 ! thorpej 230: ips = IP_STAT_GETREF();
! 231: ips[IP_STAT_NOPROTO]++;
! 232: ips[IP_STAT_DELIVERED]--;
! 233: IP_STAT_PUTREF();
1.97 dyoung 234: } else
235: m_freem(m);
1.43 itojun 236: return;
1.60 itojun 237: }
238:
239: int
1.83 perry 240: rip_pcbnotify(struct inpcbtable *table,
241: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
242: void (*notify)(struct inpcb *, int))
1.60 itojun 243: {
244: struct inpcb *inp, *ninp;
245: int nmatch;
246:
247: nmatch = 0;
1.75 itojun 248: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 249: inp != (struct inpcb *)&table->inpt_queue;
250: inp = ninp) {
1.75 itojun 251: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
252: if (inp->inp_af != AF_INET)
253: continue;
1.60 itojun 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 *
1.95 dyoung 267: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 268: {
269: struct ip *ip = v;
1.82 perry 270: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 271: int errno;
272:
273: if (sa->sa_family != AF_INET ||
274: sa->sa_len != sizeof(struct sockaddr_in))
275: return NULL;
276: if ((unsigned)cmd >= PRC_NCMDS)
277: return NULL;
278: errno = inetctlerrmap[cmd];
279: if (PRC_IS_REDIRECT(cmd))
280: notify = in_rtchange, ip = 0;
281: else if (cmd == PRC_HOSTDEAD)
282: ip = 0;
283: else if (errno == 0)
284: return NULL;
285: if (ip) {
1.95 dyoung 286: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 287: ip->ip_src, ip->ip_p, errno, notify);
288:
289: /* XXX mapped address case */
290: } else
1.95 dyoung 291: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 292: notify);
293: return NULL;
1.1 cgd 294: }
295:
296: /*
297: * Generate IP header and pass packet to ip_output.
298: * Tack on options user may have setup with control call.
299: */
1.9 mycroft 300: int
1.24 christos 301: rip_output(struct mbuf *m, ...)
302: {
1.53 augustss 303: struct inpcb *inp;
304: struct ip *ip;
1.10 mycroft 305: struct mbuf *opts;
1.24 christos 306: int flags;
307: va_list ap;
308:
309: va_start(ap, m);
1.27 mycroft 310: inp = va_arg(ap, struct inpcb *);
1.24 christos 311: va_end(ap);
312:
1.27 mycroft 313: flags =
1.37 matt 314: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
315: | IP_RETURNMTU;
1.1 cgd 316:
317: /*
318: * If the user handed us a complete IP packet, use it.
319: * Otherwise, allocate an mbuf for a header and fill it in.
320: */
1.13 mycroft 321: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 322: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
323: m_freem(m);
324: return (EMSGSIZE);
325: }
1.68 itojun 326: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
327: if (!m)
328: return (ENOBUFS);
1.1 cgd 329: ip = mtod(m, struct ip *);
330: ip->ip_tos = 0;
1.62 itojun 331: ip->ip_off = htons(0);
1.13 mycroft 332: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 333: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 334: ip->ip_src = inp->inp_laddr;
1.27 mycroft 335: ip->ip_dst = inp->inp_faddr;
1.1 cgd 336: ip->ip_ttl = MAXTTL;
1.13 mycroft 337: opts = inp->inp_options;
338: } else {
1.35 thorpej 339: if (m->m_pkthdr.len > IP_MAXPACKET) {
340: m_freem(m);
341: return (EMSGSIZE);
342: }
1.13 mycroft 343: ip = mtod(m, struct ip *);
1.65 thorpej 344:
345: /*
346: * If the mbuf is read-only, we need to allocate
347: * a new mbuf for the header, since we need to
348: * modify the header.
349: */
350: if (M_READONLY(m)) {
351: int hlen = ip->ip_hl << 2;
352:
353: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
354: if (m == NULL)
355: return (ENOMEM); /* XXX */
356: ip = mtod(m, struct ip *);
357: }
358:
1.62 itojun 359: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 360: if (m->m_pkthdr.len != ip->ip_len) {
361: m_freem(m);
362: return (EINVAL);
363: }
1.62 itojun 364: HTONS(ip->ip_len);
365: HTONS(ip->ip_off);
1.103 matt 366: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
367: flags |= IP_NOIPNEWID;
1.13 mycroft 368: opts = NULL;
369: /* XXX prevent ip_output from overwriting header fields */
370: flags |= IP_RAWOUTPUT;
1.105 ! thorpej 371: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 372: }
1.62 itojun 373: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 374: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 375: }
376:
377: /*
378: * Raw IP socket option processing.
379: */
1.9 mycroft 380: int
1.83 perry 381: rip_ctloutput(int op, struct socket *so, int level, int optname,
382: struct mbuf **m)
1.1 cgd 383: {
1.53 augustss 384: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 385: int error = 0;
1.1 cgd 386:
1.100 dyoung 387: if (level == SOL_SOCKET && optname == SO_NOHEADER) {
388: if (op == PRCO_GETOPT) {
389: *m = m_intopt(so,
390: (inp->inp_flags & INP_NOHEADER) ? 1 : 0);
391: return 0;
1.101 christos 392: } else if (*m == NULL || (*m)->m_len != sizeof(int))
1.100 dyoung 393: error = EINVAL;
394: else if (*mtod(*m, int *)) {
395: inp->inp_flags &= ~INP_HDRINCL;
396: inp->inp_flags |= INP_NOHEADER;
397: } else
398: inp->inp_flags &= ~INP_NOHEADER;
399: goto free_m;
400: } else if (level != IPPROTO_IP)
401: return ip_ctloutput(op, so, level, optname, m);
402:
403: switch (op) {
1.31 mycroft 404:
405: case PRCO_SETOPT:
406: switch (optname) {
407: case IP_HDRINCL:
1.101 christos 408: if (*m == NULL || (*m)->m_len != sizeof(int))
1.31 mycroft 409: error = EINVAL;
1.100 dyoung 410: else if (*mtod(*m, int *))
411: inp->inp_flags |= INP_HDRINCL;
412: else
413: inp->inp_flags &= ~INP_HDRINCL;
414: goto free_m;
1.31 mycroft 415:
416: #ifdef MROUTING
417: case MRT_INIT:
418: case MRT_DONE:
419: case MRT_ADD_VIF:
420: case MRT_DEL_VIF:
421: case MRT_ADD_MFC:
422: case MRT_DEL_MFC:
423: case MRT_ASSERT:
1.81 manu 424: case MRT_API_CONFIG:
425: case MRT_ADD_BW_UPCALL:
426: case MRT_DEL_BW_UPCALL:
1.31 mycroft 427: error = ip_mrouter_set(so, optname, m);
428: break;
429: #endif
430:
431: default:
432: error = ip_ctloutput(op, so, level, optname, m);
433: break;
1.13 mycroft 434: }
435: break;
1.1 cgd 436:
1.31 mycroft 437: case PRCO_GETOPT:
438: switch (optname) {
439: case IP_HDRINCL:
1.100 dyoung 440: *m = m_intopt(so, inp->inp_flags & INP_HDRINCL ? 1 : 0);
1.31 mycroft 441: break;
442:
1.6 hpeyerl 443: #ifdef MROUTING
1.31 mycroft 444: case MRT_VERSION:
445: case MRT_ASSERT:
1.81 manu 446: case MRT_API_SUPPORT:
447: case MRT_API_CONFIG:
1.31 mycroft 448: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 449: break;
1.31 mycroft 450: #endif
451:
1.18 mycroft 452: default:
1.31 mycroft 453: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 454: break;
455: }
1.31 mycroft 456: break;
1.1 cgd 457: }
1.100 dyoung 458: return error;
459: free_m:
460: if (op == PRCO_SETOPT && *m != NULL)
461: (void)m_free(*m);
462: return error;
1.1 cgd 463: }
464:
1.27 mycroft 465: int
1.83 perry 466: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 467: {
468: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
469:
470: if (nam->m_len != sizeof(*addr))
471: return (EINVAL);
1.58 matt 472: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 473: return (EADDRNOTAVAIL);
474: if (addr->sin_family != AF_INET &&
475: addr->sin_family != AF_IMPLINK)
476: return (EAFNOSUPPORT);
1.32 mycroft 477: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 478: ifa_ifwithaddr(sintosa(addr)) == 0)
479: return (EADDRNOTAVAIL);
480: inp->inp_laddr = addr->sin_addr;
481: return (0);
482: }
483:
484: int
1.83 perry 485: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 486: {
487: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
488:
489: if (nam->m_len != sizeof(*addr))
490: return (EINVAL);
1.58 matt 491: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 492: return (EADDRNOTAVAIL);
493: if (addr->sin_family != AF_INET &&
494: addr->sin_family != AF_IMPLINK)
495: return (EAFNOSUPPORT);
496: inp->inp_faddr = addr->sin_addr;
497: return (0);
498: }
499:
500: void
1.83 perry 501: rip_disconnect(struct inpcb *inp)
1.27 mycroft 502: {
503:
1.32 mycroft 504: inp->inp_faddr = zeroin_addr;
1.27 mycroft 505: }
506:
1.13 mycroft 507: u_long rip_sendspace = RIPSNDQ;
508: u_long rip_recvspace = RIPRCVQ;
509:
1.1 cgd 510: /*ARGSUSED*/
1.9 mycroft 511: int
1.83 perry 512: rip_usrreq(struct socket *so, int req,
1.88 christos 513: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 514: {
1.53 augustss 515: struct inpcb *inp;
1.27 mycroft 516: int s;
1.53 augustss 517: int error = 0;
1.13 mycroft 518: #ifdef MROUTING
1.6 hpeyerl 519: extern struct socket *ip_mrouter;
520: #endif
1.27 mycroft 521:
1.22 pk 522: if (req == PRU_CONTROL)
1.96 christos 523: return (in_control(so, (long)m, (void *)nam,
1.90 ad 524: (struct ifnet *)control, l));
1.49 thorpej 525:
1.93 tls 526: s = splsoftnet();
527:
1.50 thorpej 528: if (req == PRU_PURGEIF) {
1.56 itojun 529: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 530: in_purgeif((struct ifnet *)control);
531: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.93 tls 532: splx(s);
1.49 thorpej 533: return (0);
534: }
1.22 pk 535:
1.27 mycroft 536: inp = sotoinpcb(so);
1.28 mycroft 537: #ifdef DIAGNOSTIC
538: if (req != PRU_SEND && req != PRU_SENDOOB && control)
539: panic("rip_usrreq: unexpected control mbuf");
540: #endif
1.27 mycroft 541: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 542: error = EINVAL;
543: goto release;
544: }
545:
1.1 cgd 546: switch (req) {
547:
548: case PRU_ATTACH:
1.27 mycroft 549: if (inp != 0) {
550: error = EISCONN;
551: break;
552: }
1.94 elad 553:
554: if (l == NULL) {
1.13 mycroft 555: error = EACCES;
556: break;
557: }
1.94 elad 558:
559: /* XXX: raw socket permissions are checked in socreate() */
560:
1.27 mycroft 561: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
562: error = soreserve(so, rip_sendspace, rip_recvspace);
563: if (error)
564: break;
565: }
566: error = in_pcballoc(so, &rawcbtable);
567: if (error)
1.13 mycroft 568: break;
1.27 mycroft 569: inp = sotoinpcb(so);
1.17 cgd 570: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 571: break;
572:
573: case PRU_DETACH:
1.13 mycroft 574: #ifdef MROUTING
1.6 hpeyerl 575: if (so == ip_mrouter)
576: ip_mrouter_done();
577: #endif
1.13 mycroft 578: in_pcbdetach(inp);
1.1 cgd 579: break;
580:
581: case PRU_BIND:
1.29 mycroft 582: error = rip_bind(inp, nam);
1.27 mycroft 583: break;
584:
585: case PRU_LISTEN:
586: error = EOPNOTSUPP;
587: break;
588:
589: case PRU_CONNECT:
590: error = rip_connect(inp, nam);
591: if (error)
1.13 mycroft 592: break;
1.1 cgd 593: soisconnected(so);
1.13 mycroft 594: break;
595:
596: case PRU_CONNECT2:
597: error = EOPNOTSUPP;
598: break;
599:
1.27 mycroft 600: case PRU_DISCONNECT:
601: soisdisconnected(so);
602: rip_disconnect(inp);
603: break;
604:
1.13 mycroft 605: /*
606: * Mark the connection as being incapable of further input.
607: */
608: case PRU_SHUTDOWN:
609: socantsendmore(so);
610: break;
611:
1.27 mycroft 612: case PRU_RCVD:
613: error = EOPNOTSUPP;
614: break;
615:
1.13 mycroft 616: /*
617: * Ship a packet out. The appropriate raw output
618: * routine handles any massaging necessary.
619: */
620: case PRU_SEND:
1.28 mycroft 621: if (control && control->m_len) {
622: m_freem(control);
623: m_freem(m);
624: error = EINVAL;
625: break;
626: }
627: {
1.27 mycroft 628: if (nam) {
629: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 630: error = EISCONN;
1.28 mycroft 631: goto die;
1.13 mycroft 632: }
1.27 mycroft 633: error = rip_connect(inp, nam);
634: if (error) {
1.28 mycroft 635: die:
1.27 mycroft 636: m_freem(m);
637: break;
638: }
1.13 mycroft 639: } else {
1.27 mycroft 640: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 641: error = ENOTCONN;
1.28 mycroft 642: goto die;
1.13 mycroft 643: }
644: }
1.27 mycroft 645: error = rip_output(m, inp);
646: if (nam)
647: rip_disconnect(inp);
1.28 mycroft 648: }
1.13 mycroft 649: break;
650:
651: case PRU_SENSE:
652: /*
653: * stat: don't bother with a blocksize.
654: */
1.27 mycroft 655: splx(s);
1.1 cgd 656: return (0);
1.13 mycroft 657:
658: case PRU_RCVOOB:
1.27 mycroft 659: error = EOPNOTSUPP;
660: break;
661:
1.13 mycroft 662: case PRU_SENDOOB:
1.28 mycroft 663: m_freem(control);
1.27 mycroft 664: m_freem(m);
1.13 mycroft 665: error = EOPNOTSUPP;
666: break;
667:
668: case PRU_SOCKADDR:
669: in_setsockaddr(inp, nam);
670: break;
671:
672: case PRU_PEERADDR:
673: in_setpeeraddr(inp, nam);
674: break;
675:
676: default:
677: panic("rip_usrreq");
1.1 cgd 678: }
1.27 mycroft 679:
1.22 pk 680: release:
1.27 mycroft 681: splx(s);
1.1 cgd 682: return (error);
683: }
1.84 atatat 684:
685: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
686: {
687:
688: sysctl_createv(clog, 0, NULL, NULL,
689: CTLFLAG_PERMANENT,
690: CTLTYPE_NODE, "net", NULL,
691: NULL, 0, NULL, 0,
692: CTL_NET, CTL_EOL);
693: sysctl_createv(clog, 0, NULL, NULL,
694: CTLFLAG_PERMANENT,
695: CTLTYPE_NODE, "inet", NULL,
696: NULL, 0, NULL, 0,
697: CTL_NET, PF_INET, CTL_EOL);
698: sysctl_createv(clog, 0, NULL, NULL,
699: CTLFLAG_PERMANENT,
700: CTLTYPE_NODE, "raw",
701: SYSCTL_DESCR("Raw IPv4 settings"),
702: NULL, 0, NULL, 0,
703: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
704:
705: sysctl_createv(clog, 0, NULL, NULL,
706: CTLFLAG_PERMANENT,
1.86 atatat 707: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 708: SYSCTL_DESCR("Raw IPv4 control block list"),
709: sysctl_inpcblist, 0, &rawcbtable, 0,
710: CTL_NET, PF_INET, IPPROTO_RAW,
711: CTL_CREATE, CTL_EOL);
712: }
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