Annotation of src/sys/netinet/raw_ip.c, Revision 1.144
1.144 ! rtr 1: /* $NetBSD: raw_ip.c,v 1.143 2014/08/05 07:55:32 rtr 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:
1.121 rmind 63: /*
64: * Raw interface to IP protocol.
65: */
66:
1.59 lukem 67: #include <sys/cdefs.h>
1.144 ! rtr 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.143 2014/08/05 07:55:32 rtr Exp $");
1.40 scottr 69:
1.78 jonathan 70: #include "opt_inet.h"
1.109 christos 71: #include "opt_compat_netbsd.h"
1.45 thorpej 72: #include "opt_ipsec.h"
1.40 scottr 73: #include "opt_mrouting.h"
1.1 cgd 74:
1.7 mycroft 75: #include <sys/param.h>
1.84 atatat 76: #include <sys/sysctl.h>
1.7 mycroft 77: #include <sys/malloc.h>
78: #include <sys/mbuf.h>
79: #include <sys/socket.h>
80: #include <sys/protosw.h>
81: #include <sys/socketvar.h>
82: #include <sys/errno.h>
1.13 mycroft 83: #include <sys/systm.h>
1.26 mycroft 84: #include <sys/proc.h>
1.89 elad 85: #include <sys/kauth.h>
1.1 cgd 86:
1.7 mycroft 87: #include <net/if.h>
88: #include <net/route.h>
1.1 cgd 89:
1.7 mycroft 90: #include <netinet/in.h>
91: #include <netinet/in_systm.h>
92: #include <netinet/ip.h>
93: #include <netinet/ip_var.h>
1.105 thorpej 94: #include <netinet/ip_private.h>
1.13 mycroft 95: #include <netinet/ip_mroute.h>
1.44 darrenr 96: #include <netinet/ip_icmp.h>
1.7 mycroft 97: #include <netinet/in_pcb.h>
1.87 yamt 98: #include <netinet/in_proto.h>
1.24 christos 99: #include <netinet/in_var.h>
100:
1.116 christos 101: #ifdef IPSEC
1.72 jonathan 102: #include <netipsec/ipsec.h>
1.106 thorpej 103: #include <netipsec/ipsec_var.h>
104: #include <netipsec/ipsec_private.h>
1.116 christos 105: #endif /* IPSEC */
1.72 jonathan 106:
1.109 christos 107: #ifdef COMPAT_50
108: #include <compat/sys/socket.h>
109: #endif
110:
1.20 mycroft 111: struct inpcbtable rawcbtable;
1.30 pk 112:
1.82 perry 113: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
114: struct in_addr, int, int, void (*)(struct inpcb *, int));
1.137 rtr 115: int rip_connect_pcb(struct inpcb *, struct mbuf *);
1.139 rtr 116: static void rip_disconnect1(struct inpcb *);
1.13 mycroft 117:
1.110 pooka 118: static void sysctl_net_inet_raw_setup(struct sysctllog **);
119:
1.13 mycroft 120: /*
121: * Nominal space allocated to a raw ip socket.
122: */
123: #define RIPSNDQ 8192
124: #define RIPRCVQ 8192
1.1 cgd 125:
1.121 rmind 126: static u_long rip_sendspace = RIPSNDQ;
127: static u_long rip_recvspace = RIPRCVQ;
128:
1.1 cgd 129: /*
130: * Raw interface to IP protocol.
131: */
1.13 mycroft 132:
133: /*
134: * Initialize raw connection block q.
135: */
136: void
1.83 perry 137: rip_init(void)
1.13 mycroft 138: {
139:
1.110 pooka 140: sysctl_net_inet_raw_setup(NULL);
1.33 mycroft 141: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 142: }
143:
1.100 dyoung 144: static void
145: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
146: int hlen, struct mbuf *opts, struct mbuf *n)
147: {
148: if (last->inp_flags & INP_NOHEADER)
149: m_adj(n, hlen);
1.109 christos 150: if (last->inp_flags & INP_CONTROLOPTS
151: #ifdef SO_OTIMESTAMP
152: || last->inp_socket->so_options & SO_OTIMESTAMP
153: #endif
154: || last->inp_socket->so_options & SO_TIMESTAMP)
1.100 dyoung 155: ip_savecontrol(last, &opts, ip, n);
156: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
157: /* should notify about lost packet */
158: m_freem(n);
159: if (opts)
160: m_freem(opts);
161: } else
162: sorwakeup(last->inp_socket);
163: }
164:
1.1 cgd 165: /*
166: * Setup generic address and protocol structures
167: * for raw_input routine, then pass them along with
168: * mbuf chain.
169: */
1.9 mycroft 170: void
1.24 christos 171: rip_input(struct mbuf *m, ...)
1.1 cgd 172: {
1.100 dyoung 173: int hlen, proto;
1.53 augustss 174: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 175: struct inpcb_hdr *inph;
1.53 augustss 176: struct inpcb *inp;
1.97 dyoung 177: struct inpcb *last = NULL;
178: struct mbuf *n, *opts = NULL;
1.32 mycroft 179: struct sockaddr_in ripsrc;
1.43 itojun 180: va_list ap;
181:
182: va_start(ap, m);
1.64 simonb 183: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 184: proto = va_arg(ap, int);
185: va_end(ap);
1.1 cgd 186:
1.97 dyoung 187: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 188:
189: /*
190: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 191: * XXX to have the header length subtracted, and in host order.
192: * XXX ip_off is also expected to be host order.
1.42 thorpej 193: */
1.100 dyoung 194: hlen = ip->ip_hl << 2;
195: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 196: NTOHS(ip->ip_off);
1.32 mycroft 197:
1.117 christos 198: TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75 itojun 199: inp = (struct inpcb *)inph;
200: if (inp->inp_af != AF_INET)
201: continue;
1.43 itojun 202: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 203: continue;
1.32 mycroft 204: if (!in_nullhost(inp->inp_laddr) &&
205: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 206: continue;
1.32 mycroft 207: if (!in_nullhost(inp->inp_faddr) &&
208: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 209: continue;
1.97 dyoung 210: if (last == NULL)
211: ;
1.116 christos 212: #if defined(IPSEC)
1.97 dyoung 213: /* check AH/ESP integrity. */
1.124 christos 214: else if (ipsec_used &&
215: ipsec4_in_reject_so(m, last->inp_socket)) {
1.106 thorpej 216: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 217: /* do not inject data to pcb */
218: }
219: #endif /*IPSEC*/
1.99 dyoung 220: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 221: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
222: n);
1.97 dyoung 223: opts = NULL;
1.13 mycroft 224: }
1.36 thorpej 225: last = inp;
1.13 mycroft 226: }
1.116 christos 227: #if defined(IPSEC)
1.55 itojun 228: /* check AH/ESP integrity. */
1.124 christos 229: if (ipsec_used && last != NULL
230: && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 231: m_freem(m);
1.106 thorpej 232: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 233: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 234: /* do not inject data to pcb */
235: } else
236: #endif /*IPSEC*/
1.100 dyoung 237: if (last != NULL)
238: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
239: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 240: uint64_t *ips;
241:
1.97 dyoung 242: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
243: 0, 0);
1.105 thorpej 244: ips = IP_STAT_GETREF();
245: ips[IP_STAT_NOPROTO]++;
246: ips[IP_STAT_DELIVERED]--;
247: IP_STAT_PUTREF();
1.97 dyoung 248: } else
249: m_freem(m);
1.43 itojun 250: return;
1.60 itojun 251: }
252:
253: int
1.83 perry 254: rip_pcbnotify(struct inpcbtable *table,
255: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
256: void (*notify)(struct inpcb *, int))
1.60 itojun 257: {
1.117 christos 258: struct inpcb_hdr *inph, *ninph;
1.60 itojun 259: int nmatch;
260:
261: nmatch = 0;
1.117 christos 262: TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
263: struct inpcb *inp = (struct inpcb *)inph;
1.75 itojun 264: if (inp->inp_af != AF_INET)
265: continue;
1.60 itojun 266: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
267: continue;
268: if (in_hosteq(inp->inp_faddr, faddr) &&
269: in_hosteq(inp->inp_laddr, laddr)) {
270: (*notify)(inp, errno);
271: nmatch++;
272: }
273: }
274:
275: return nmatch;
276: }
277:
278: void *
1.95 dyoung 279: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 280: {
281: struct ip *ip = v;
1.82 perry 282: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 283: int errno;
284:
285: if (sa->sa_family != AF_INET ||
286: sa->sa_len != sizeof(struct sockaddr_in))
287: return NULL;
288: if ((unsigned)cmd >= PRC_NCMDS)
289: return NULL;
290: errno = inetctlerrmap[cmd];
291: if (PRC_IS_REDIRECT(cmd))
292: notify = in_rtchange, ip = 0;
293: else if (cmd == PRC_HOSTDEAD)
294: ip = 0;
295: else if (errno == 0)
296: return NULL;
297: if (ip) {
1.95 dyoung 298: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 299: ip->ip_src, ip->ip_p, errno, notify);
300:
301: /* XXX mapped address case */
302: } else
1.95 dyoung 303: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 304: notify);
305: return NULL;
1.1 cgd 306: }
307:
308: /*
309: * Generate IP header and pass packet to ip_output.
310: * Tack on options user may have setup with control call.
311: */
1.9 mycroft 312: int
1.24 christos 313: rip_output(struct mbuf *m, ...)
314: {
1.53 augustss 315: struct inpcb *inp;
316: struct ip *ip;
1.10 mycroft 317: struct mbuf *opts;
1.24 christos 318: int flags;
319: va_list ap;
320:
321: va_start(ap, m);
1.27 mycroft 322: inp = va_arg(ap, struct inpcb *);
1.24 christos 323: va_end(ap);
324:
1.27 mycroft 325: flags =
1.37 matt 326: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
327: | IP_RETURNMTU;
1.1 cgd 328:
329: /*
330: * If the user handed us a complete IP packet, use it.
331: * Otherwise, allocate an mbuf for a header and fill it in.
332: */
1.13 mycroft 333: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 334: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
335: m_freem(m);
336: return (EMSGSIZE);
337: }
1.68 itojun 338: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
339: if (!m)
340: return (ENOBUFS);
1.1 cgd 341: ip = mtod(m, struct ip *);
342: ip->ip_tos = 0;
1.62 itojun 343: ip->ip_off = htons(0);
1.13 mycroft 344: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 345: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 346: ip->ip_src = inp->inp_laddr;
1.27 mycroft 347: ip->ip_dst = inp->inp_faddr;
1.1 cgd 348: ip->ip_ttl = MAXTTL;
1.13 mycroft 349: opts = inp->inp_options;
350: } else {
1.35 thorpej 351: if (m->m_pkthdr.len > IP_MAXPACKET) {
352: m_freem(m);
353: return (EMSGSIZE);
354: }
1.13 mycroft 355: ip = mtod(m, struct ip *);
1.65 thorpej 356:
357: /*
358: * If the mbuf is read-only, we need to allocate
359: * a new mbuf for the header, since we need to
360: * modify the header.
361: */
362: if (M_READONLY(m)) {
363: int hlen = ip->ip_hl << 2;
364:
365: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
366: if (m == NULL)
367: return (ENOMEM); /* XXX */
368: ip = mtod(m, struct ip *);
369: }
370:
1.62 itojun 371: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 372: if (m->m_pkthdr.len != ip->ip_len) {
373: m_freem(m);
374: return (EINVAL);
375: }
1.62 itojun 376: HTONS(ip->ip_len);
377: HTONS(ip->ip_off);
1.103 matt 378: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
379: flags |= IP_NOIPNEWID;
1.13 mycroft 380: opts = NULL;
381: /* XXX prevent ip_output from overwriting header fields */
382: flags |= IP_RAWOUTPUT;
1.105 thorpej 383: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 384: }
1.123 rmind 385:
386: /*
387: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
388: * will be stored in inp_errormtu.
389: */
390: return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
391: inp->inp_socket);
1.1 cgd 392: }
393:
394: /*
395: * Raw IP socket option processing.
396: */
1.9 mycroft 397: int
1.108 plunky 398: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 399: {
1.53 augustss 400: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 401: int error = 0;
1.108 plunky 402: int optval;
1.1 cgd 403:
1.108 plunky 404: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 405: if (op == PRCO_GETOPT) {
1.108 plunky 406: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
407: error = sockopt_set(sopt, &optval, sizeof(optval));
408: } else if (op == PRCO_SETOPT) {
409: error = sockopt_getint(sopt, &optval);
410: if (error)
411: goto out;
412: if (optval) {
413: inp->inp_flags &= ~INP_HDRINCL;
414: inp->inp_flags |= INP_NOHEADER;
415: } else
416: inp->inp_flags &= ~INP_NOHEADER;
417: }
418: goto out;
419: } else if (sopt->sopt_level != IPPROTO_IP)
420: return ip_ctloutput(op, so, sopt);
1.100 dyoung 421:
422: switch (op) {
1.31 mycroft 423:
424: case PRCO_SETOPT:
1.108 plunky 425: switch (sopt->sopt_name) {
1.31 mycroft 426: case IP_HDRINCL:
1.108 plunky 427: error = sockopt_getint(sopt, &optval);
428: if (error)
429: break;
430: if (optval)
1.100 dyoung 431: inp->inp_flags |= INP_HDRINCL;
432: else
433: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 434: break;
1.31 mycroft 435:
436: #ifdef MROUTING
437: case MRT_INIT:
438: case MRT_DONE:
439: case MRT_ADD_VIF:
440: case MRT_DEL_VIF:
441: case MRT_ADD_MFC:
442: case MRT_DEL_MFC:
443: case MRT_ASSERT:
1.81 manu 444: case MRT_API_CONFIG:
445: case MRT_ADD_BW_UPCALL:
446: case MRT_DEL_BW_UPCALL:
1.108 plunky 447: error = ip_mrouter_set(so, sopt);
1.31 mycroft 448: break;
449: #endif
450:
451: default:
1.108 plunky 452: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 453: break;
1.13 mycroft 454: }
455: break;
1.1 cgd 456:
1.31 mycroft 457: case PRCO_GETOPT:
1.108 plunky 458: switch (sopt->sopt_name) {
1.31 mycroft 459: case IP_HDRINCL:
1.108 plunky 460: optval = inp->inp_flags & INP_HDRINCL;
461: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 462: break;
463:
1.6 hpeyerl 464: #ifdef MROUTING
1.31 mycroft 465: case MRT_VERSION:
466: case MRT_ASSERT:
1.81 manu 467: case MRT_API_SUPPORT:
468: case MRT_API_CONFIG:
1.108 plunky 469: error = ip_mrouter_get(so, sopt);
1.18 mycroft 470: break;
1.31 mycroft 471: #endif
472:
1.18 mycroft 473: default:
1.108 plunky 474: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 475: break;
476: }
1.31 mycroft 477: break;
1.1 cgd 478: }
1.108 plunky 479: out:
1.100 dyoung 480: return error;
1.1 cgd 481: }
482:
1.27 mycroft 483: int
1.137 rtr 484: rip_connect_pcb(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 485: {
486: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
487:
488: if (nam->m_len != sizeof(*addr))
489: return (EINVAL);
1.138 ozaki-r 490: if (IFNET_EMPTY())
1.27 mycroft 491: return (EADDRNOTAVAIL);
1.115 joerg 492: if (addr->sin_family != AF_INET)
1.27 mycroft 493: return (EAFNOSUPPORT);
494: inp->inp_faddr = addr->sin_addr;
495: return (0);
496: }
497:
1.139 rtr 498: static void
499: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 500: {
501:
1.32 mycroft 502: inp->inp_faddr = zeroin_addr;
1.27 mycroft 503: }
504:
1.121 rmind 505: static int
506: rip_attach(struct socket *so, int proto)
507: {
508: struct inpcb *inp;
509: int error;
510:
511: KASSERT(sotoinpcb(so) == NULL);
512: sosetlock(so);
513:
514: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
515: error = soreserve(so, rip_sendspace, rip_recvspace);
516: if (error) {
517: return error;
518: }
519: }
520:
521: error = in_pcballoc(so, &rawcbtable);
522: if (error) {
523: return error;
524: }
525: inp = sotoinpcb(so);
526: inp->inp_ip.ip_p = proto;
527: KASSERT(solocked(so));
528:
529: return 0;
530: }
1.13 mycroft 531:
1.121 rmind 532: static void
533: rip_detach(struct socket *so)
1.1 cgd 534: {
1.53 augustss 535: struct inpcb *inp;
1.121 rmind 536:
537: KASSERT(solocked(so));
538: inp = sotoinpcb(so);
539: KASSERT(inp != NULL);
540:
1.13 mycroft 541: #ifdef MROUTING
1.6 hpeyerl 542: extern struct socket *ip_mrouter;
1.121 rmind 543: if (so == ip_mrouter) {
544: ip_mrouter_done();
545: }
1.6 hpeyerl 546: #endif
1.121 rmind 547: in_pcbdetach(inp);
548: }
549:
1.125 rtr 550: static int
1.133 rtr 551: rip_accept(struct socket *so, struct mbuf *nam)
552: {
553: KASSERT(solocked(so));
554:
555: panic("rip_accept");
1.136 rtr 556:
557: return EOPNOTSUPP;
558: }
559:
560: static int
1.142 rtr 561: rip_bind(struct socket *so, struct mbuf *nam, struct lwp *l)
1.136 rtr 562: {
563: struct inpcb *inp = sotoinpcb(so);
564: struct sockaddr_in *addr;
565: int error = 0;
566: int s;
567:
568: KASSERT(solocked(so));
569: KASSERT(inp != NULL);
570: KASSERT(nam != NULL);
571:
572: s = splsoftnet();
573: addr = mtod(nam, struct sockaddr_in *);
574: if (nam->m_len != sizeof(*addr)) {
575: error = EINVAL;
576: goto release;
577: }
1.138 ozaki-r 578: if (IFNET_EMPTY()) {
1.136 rtr 579: error = EADDRNOTAVAIL;
580: goto release;
581: }
582: if (addr->sin_family != AF_INET) {
583: error = EAFNOSUPPORT;
584: goto release;
585: }
586: if (!in_nullhost(addr->sin_addr) &&
587: ifa_ifwithaddr(sintosa(addr)) == 0) {
588: error = EADDRNOTAVAIL;
589: goto release;
590: }
591: inp->inp_laddr = addr->sin_addr;
592:
593: release:
594: splx(s);
595: return error;
596: }
597:
598: static int
1.142 rtr 599: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 600: {
601: KASSERT(solocked(so));
602:
1.133 rtr 603: return EOPNOTSUPP;
604: }
605:
606: static int
1.142 rtr 607: rip_connect(struct socket *so, struct mbuf *nam, struct lwp *l)
1.137 rtr 608: {
609: struct inpcb *inp = sotoinpcb(so);
610: int error = 0;
611: int s;
612:
613: KASSERT(solocked(so));
614: KASSERT(inp != NULL);
615: KASSERT(nam != NULL);
616:
617: s = splsoftnet();
618: error = rip_connect_pcb(inp, nam);
619: if (! error)
620: soisconnected(so);
1.140 rtr 621: splx(s);
1.137 rtr 622:
623: return error;
624: }
625:
1.139 rtr 626: static int
627: rip_disconnect(struct socket *so)
628: {
629: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 630: int s;
1.139 rtr 631:
632: KASSERT(solocked(so));
633: KASSERT(inp != NULL);
634:
1.140 rtr 635: s = splsoftnet();
1.139 rtr 636: soisdisconnected(so);
637: rip_disconnect1(inp);
1.140 rtr 638: splx(s);
639:
1.139 rtr 640: return 0;
641: }
642:
643: static int
644: rip_shutdown(struct socket *so)
645: {
1.140 rtr 646: int s;
647:
1.139 rtr 648: KASSERT(solocked(so));
649:
650: /*
651: * Mark the connection as being incapable of further input.
652: */
1.140 rtr 653: s = splsoftnet();
1.139 rtr 654: socantsendmore(so);
1.140 rtr 655: splx(s);
656:
1.139 rtr 657: return 0;
658: }
659:
660: static int
661: rip_abort(struct socket *so)
662: {
663: KASSERT(solocked(so));
664:
665: panic("rip_abort");
666:
667: return EOPNOTSUPP;
668: }
1.137 rtr 669:
670: static int
1.127 rtr 671: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 672: {
1.127 rtr 673: return in_control(so, cmd, nam, ifp);
1.125 rtr 674: }
675:
1.128 rtr 676: static int
677: rip_stat(struct socket *so, struct stat *ub)
678: {
1.131 rtr 679: KASSERT(solocked(so));
680:
1.130 rtr 681: /* stat: don't bother with a blocksize. */
682: return 0;
1.128 rtr 683: }
684:
1.132 rtr 685: static int
686: rip_peeraddr(struct socket *so, struct mbuf *nam)
687: {
1.140 rtr 688: int s;
689:
1.134 rtr 690: KASSERT(solocked(so));
1.132 rtr 691: KASSERT(sotoinpcb(so) != NULL);
692: KASSERT(nam != NULL);
693:
1.140 rtr 694: s = splsoftnet();
1.132 rtr 695: in_setpeeraddr(sotoinpcb(so), nam);
1.140 rtr 696: splx(s);
697:
1.132 rtr 698: return 0;
699: }
700:
701: static int
702: rip_sockaddr(struct socket *so, struct mbuf *nam)
703: {
1.140 rtr 704: int s;
705:
1.134 rtr 706: KASSERT(solocked(so));
1.132 rtr 707: KASSERT(sotoinpcb(so) != NULL);
708: KASSERT(nam != NULL);
709:
1.140 rtr 710: s = splsoftnet();
1.132 rtr 711: in_setsockaddr(sotoinpcb(so), nam);
1.140 rtr 712: splx(s);
713:
1.132 rtr 714: return 0;
715: }
716:
1.135 rtr 717: static int
1.144 ! rtr 718: rip_rcvd(struct socket *so, int flags, struct lwp *l)
! 719: {
! 720: KASSERT(solocked(so));
! 721:
! 722: return EOPNOTSUPP;
! 723: }
! 724:
! 725: static int
1.135 rtr 726: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
727: {
728: KASSERT(solocked(so));
729:
730: return EOPNOTSUPP;
731: }
732:
733: static int
1.143 rtr 734: rip_send(struct socket *so, struct mbuf *m, struct mbuf *nam,
735: struct mbuf *control, struct lwp *l)
736: {
737: struct inpcb *inp = sotoinpcb(so);
738: int error = 0;
739: int s;
740:
741: KASSERT(solocked(so));
742: KASSERT(inp != NULL);
743: KASSERT(m != NULL);
744:
745: /*
746: * Ship a packet out. The appropriate raw output
747: * routine handles any massaging necessary.
748: */
749: if (control && control->m_len) {
750: m_freem(control);
751: m_freem(m);
752: return EINVAL;
753: }
754:
755: s = splsoftnet();
756: if (nam) {
757: if ((so->so_state & SS_ISCONNECTED) != 0) {
758: error = EISCONN;
759: goto die;
760: }
761: error = rip_connect_pcb(inp, nam);
762: if (error) {
763: die:
764: m_freem(m);
765: splx(s);
766: return error;
767: }
768: } else {
769: if ((so->so_state & SS_ISCONNECTED) == 0) {
770: error = ENOTCONN;
771: goto die;
772: }
773: }
774: error = rip_output(m, inp);
775: if (nam)
776: rip_disconnect1(inp);
777:
778: splx(s);
779: return error;
780: }
781:
782: static int
1.135 rtr 783: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
784: {
785: KASSERT(solocked(so));
786:
787: m_freem(m);
788: m_freem(control);
789:
790: return EOPNOTSUPP;
791: }
792:
1.121 rmind 793: int
794: rip_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
795: struct mbuf *control, struct lwp *l)
796: {
797: struct inpcb *inp;
798: int s, error = 0;
1.27 mycroft 799:
1.121 rmind 800: KASSERT(req != PRU_ATTACH);
801: KASSERT(req != PRU_DETACH);
1.133 rtr 802: KASSERT(req != PRU_ACCEPT);
1.136 rtr 803: KASSERT(req != PRU_BIND);
804: KASSERT(req != PRU_LISTEN);
1.137 rtr 805: KASSERT(req != PRU_CONNECT);
1.139 rtr 806: KASSERT(req != PRU_DISCONNECT);
807: KASSERT(req != PRU_SHUTDOWN);
808: KASSERT(req != PRU_ABORT);
1.125 rtr 809: KASSERT(req != PRU_CONTROL);
1.128 rtr 810: KASSERT(req != PRU_SENSE);
1.132 rtr 811: KASSERT(req != PRU_PEERADDR);
812: KASSERT(req != PRU_SOCKADDR);
1.144 ! rtr 813: KASSERT(req != PRU_RCVD);
1.135 rtr 814: KASSERT(req != PRU_RCVOOB);
1.143 rtr 815: KASSERT(req != PRU_SEND);
1.135 rtr 816: KASSERT(req != PRU_SENDOOB);
1.49 thorpej 817:
1.93 tls 818: s = splsoftnet();
1.50 thorpej 819: if (req == PRU_PURGEIF) {
1.107 ad 820: mutex_enter(softnet_lock);
1.56 itojun 821: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 822: in_purgeif((struct ifnet *)control);
823: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.107 ad 824: mutex_exit(softnet_lock);
1.93 tls 825: splx(s);
1.121 rmind 826: return 0;
1.49 thorpej 827: }
1.22 pk 828:
1.121 rmind 829: KASSERT(solocked(so));
1.27 mycroft 830: inp = sotoinpcb(so);
1.121 rmind 831:
1.143 rtr 832: KASSERT(!control);
1.121 rmind 833: if (inp == NULL) {
834: splx(s);
835: return EINVAL;
1.22 pk 836: }
837:
1.1 cgd 838: switch (req) {
839:
1.13 mycroft 840: case PRU_CONNECT2:
841: error = EOPNOTSUPP;
842: break;
843:
844: default:
845: panic("rip_usrreq");
1.1 cgd 846: }
1.121 rmind 847: splx(s);
1.27 mycroft 848:
1.121 rmind 849: return error;
1.1 cgd 850: }
1.84 atatat 851:
1.122 rmind 852: PR_WRAP_USRREQS(rip)
853: #define rip_attach rip_attach_wrapper
854: #define rip_detach rip_detach_wrapper
1.133 rtr 855: #define rip_accept rip_accept_wrapper
1.136 rtr 856: #define rip_bind rip_bind_wrapper
857: #define rip_listen rip_listen_wrapper
1.137 rtr 858: #define rip_connect rip_connect_wrapper
1.139 rtr 859: #define rip_disconnect rip_disconnect_wrapper
860: #define rip_shutdown rip_shutdown_wrapper
861: #define rip_abort rip_abort_wrapper
1.125 rtr 862: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 863: #define rip_stat rip_stat_wrapper
1.132 rtr 864: #define rip_peeraddr rip_peeraddr_wrapper
865: #define rip_sockaddr rip_sockaddr_wrapper
1.144 ! rtr 866: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 867: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 868: #define rip_send rip_send_wrapper
1.135 rtr 869: #define rip_sendoob rip_sendoob_wrapper
1.120 rmind 870: #define rip_usrreq rip_usrreq_wrapper
871:
872: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 873: .pr_attach = rip_attach,
874: .pr_detach = rip_detach,
1.133 rtr 875: .pr_accept = rip_accept,
1.136 rtr 876: .pr_bind = rip_bind,
877: .pr_listen = rip_listen,
1.137 rtr 878: .pr_connect = rip_connect,
1.139 rtr 879: .pr_disconnect = rip_disconnect,
880: .pr_shutdown = rip_shutdown,
881: .pr_abort = rip_abort,
1.125 rtr 882: .pr_ioctl = rip_ioctl,
1.128 rtr 883: .pr_stat = rip_stat,
1.132 rtr 884: .pr_peeraddr = rip_peeraddr,
885: .pr_sockaddr = rip_sockaddr,
1.144 ! rtr 886: .pr_rcvd = rip_rcvd,
1.135 rtr 887: .pr_recvoob = rip_recvoob,
1.143 rtr 888: .pr_send = rip_send,
1.135 rtr 889: .pr_sendoob = rip_sendoob,
1.120 rmind 890: .pr_generic = rip_usrreq,
891: };
892:
1.110 pooka 893: static void
894: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 895: {
896:
897: sysctl_createv(clog, 0, NULL, NULL,
898: CTLFLAG_PERMANENT,
899: CTLTYPE_NODE, "inet", NULL,
900: NULL, 0, NULL, 0,
901: CTL_NET, PF_INET, CTL_EOL);
902: sysctl_createv(clog, 0, NULL, NULL,
903: CTLFLAG_PERMANENT,
904: CTLTYPE_NODE, "raw",
905: SYSCTL_DESCR("Raw IPv4 settings"),
906: NULL, 0, NULL, 0,
907: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
908:
909: sysctl_createv(clog, 0, NULL, NULL,
910: CTLFLAG_PERMANENT,
1.86 atatat 911: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 912: SYSCTL_DESCR("Raw IPv4 control block list"),
913: sysctl_inpcblist, 0, &rawcbtable, 0,
914: CTL_NET, PF_INET, IPPROTO_RAW,
915: CTL_CREATE, CTL_EOL);
916: }
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