Annotation of src/sys/netinet/raw_ip.c, Revision 1.150
1.150 ! rtr 1: /* $NetBSD: raw_ip.c,v 1.149 2015/04/25 15:19:54 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>
1.150 ! rtr 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.149 2015/04/25 15:19:54 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/mbuf.h>
78: #include <sys/socket.h>
79: #include <sys/protosw.h>
80: #include <sys/socketvar.h>
81: #include <sys/errno.h>
1.13 mycroft 82: #include <sys/systm.h>
1.26 mycroft 83: #include <sys/proc.h>
1.89 elad 84: #include <sys/kauth.h>
1.1 cgd 85:
1.7 mycroft 86: #include <net/if.h>
87: #include <net/route.h>
1.1 cgd 88:
1.7 mycroft 89: #include <netinet/in.h>
90: #include <netinet/in_systm.h>
91: #include <netinet/ip.h>
92: #include <netinet/ip_var.h>
1.105 thorpej 93: #include <netinet/ip_private.h>
1.13 mycroft 94: #include <netinet/ip_mroute.h>
1.44 darrenr 95: #include <netinet/ip_icmp.h>
1.7 mycroft 96: #include <netinet/in_pcb.h>
1.87 yamt 97: #include <netinet/in_proto.h>
1.24 christos 98: #include <netinet/in_var.h>
99:
1.116 christos 100: #ifdef IPSEC
1.72 jonathan 101: #include <netipsec/ipsec.h>
1.106 thorpej 102: #include <netipsec/ipsec_var.h>
103: #include <netipsec/ipsec_private.h>
1.116 christos 104: #endif /* IPSEC */
1.72 jonathan 105:
1.109 christos 106: #ifdef COMPAT_50
107: #include <compat/sys/socket.h>
108: #endif
109:
1.20 mycroft 110: struct inpcbtable rawcbtable;
1.30 pk 111:
1.82 perry 112: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
113: struct in_addr, int, int, void (*)(struct inpcb *, int));
1.149 rtr 114: static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
1.139 rtr 115: static void rip_disconnect1(struct inpcb *);
1.13 mycroft 116:
1.110 pooka 117: static void sysctl_net_inet_raw_setup(struct sysctllog **);
118:
1.13 mycroft 119: /*
120: * Nominal space allocated to a raw ip socket.
121: */
122: #define RIPSNDQ 8192
123: #define RIPRCVQ 8192
1.1 cgd 124:
1.121 rmind 125: static u_long rip_sendspace = RIPSNDQ;
126: static u_long rip_recvspace = RIPRCVQ;
127:
1.1 cgd 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:
1.117 christos 197: TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75 itojun 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: ;
1.116 christos 211: #if defined(IPSEC)
1.97 dyoung 212: /* check AH/ESP integrity. */
1.124 christos 213: else if (ipsec_used &&
214: ipsec4_in_reject_so(m, last->inp_socket)) {
1.106 thorpej 215: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 216: /* do not inject data to pcb */
217: }
218: #endif /*IPSEC*/
1.99 dyoung 219: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 220: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
221: n);
1.97 dyoung 222: opts = NULL;
1.13 mycroft 223: }
1.36 thorpej 224: last = inp;
1.13 mycroft 225: }
1.116 christos 226: #if defined(IPSEC)
1.55 itojun 227: /* check AH/ESP integrity. */
1.124 christos 228: if (ipsec_used && last != NULL
229: && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 230: m_freem(m);
1.106 thorpej 231: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 232: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 233: /* do not inject data to pcb */
234: } else
235: #endif /*IPSEC*/
1.100 dyoung 236: if (last != NULL)
237: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
238: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 239: uint64_t *ips;
240:
1.97 dyoung 241: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
242: 0, 0);
1.105 thorpej 243: ips = IP_STAT_GETREF();
244: ips[IP_STAT_NOPROTO]++;
245: ips[IP_STAT_DELIVERED]--;
246: IP_STAT_PUTREF();
1.97 dyoung 247: } else
248: m_freem(m);
1.43 itojun 249: return;
1.60 itojun 250: }
251:
252: int
1.83 perry 253: rip_pcbnotify(struct inpcbtable *table,
254: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
255: void (*notify)(struct inpcb *, int))
1.60 itojun 256: {
1.117 christos 257: struct inpcb_hdr *inph, *ninph;
1.60 itojun 258: int nmatch;
259:
260: nmatch = 0;
1.117 christos 261: TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
262: struct inpcb *inp = (struct inpcb *)inph;
1.75 itojun 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: }
1.123 rmind 384:
385: /*
386: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
387: * will be stored in inp_errormtu.
388: */
389: return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
390: inp->inp_socket);
1.1 cgd 391: }
392:
393: /*
394: * Raw IP socket option processing.
395: */
1.9 mycroft 396: int
1.108 plunky 397: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 398: {
1.53 augustss 399: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 400: int error = 0;
1.108 plunky 401: int optval;
1.1 cgd 402:
1.108 plunky 403: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 404: if (op == PRCO_GETOPT) {
1.108 plunky 405: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
406: error = sockopt_set(sopt, &optval, sizeof(optval));
407: } else if (op == PRCO_SETOPT) {
408: error = sockopt_getint(sopt, &optval);
409: if (error)
410: goto out;
411: if (optval) {
412: inp->inp_flags &= ~INP_HDRINCL;
413: inp->inp_flags |= INP_NOHEADER;
414: } else
415: inp->inp_flags &= ~INP_NOHEADER;
416: }
417: goto out;
418: } else if (sopt->sopt_level != IPPROTO_IP)
419: return ip_ctloutput(op, so, sopt);
1.100 dyoung 420:
421: switch (op) {
1.31 mycroft 422:
423: case PRCO_SETOPT:
1.108 plunky 424: switch (sopt->sopt_name) {
1.31 mycroft 425: case IP_HDRINCL:
1.108 plunky 426: error = sockopt_getint(sopt, &optval);
427: if (error)
428: break;
429: if (optval)
1.100 dyoung 430: inp->inp_flags |= INP_HDRINCL;
431: else
432: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 433: break;
1.31 mycroft 434:
435: #ifdef MROUTING
436: case MRT_INIT:
437: case MRT_DONE:
438: case MRT_ADD_VIF:
439: case MRT_DEL_VIF:
440: case MRT_ADD_MFC:
441: case MRT_DEL_MFC:
442: case MRT_ASSERT:
1.81 manu 443: case MRT_API_CONFIG:
444: case MRT_ADD_BW_UPCALL:
445: case MRT_DEL_BW_UPCALL:
1.108 plunky 446: error = ip_mrouter_set(so, sopt);
1.31 mycroft 447: break;
448: #endif
449:
450: default:
1.108 plunky 451: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 452: break;
1.13 mycroft 453: }
454: break;
1.1 cgd 455:
1.31 mycroft 456: case PRCO_GETOPT:
1.108 plunky 457: switch (sopt->sopt_name) {
1.31 mycroft 458: case IP_HDRINCL:
1.108 plunky 459: optval = inp->inp_flags & INP_HDRINCL;
460: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 461: break;
462:
1.6 hpeyerl 463: #ifdef MROUTING
1.31 mycroft 464: case MRT_VERSION:
465: case MRT_ASSERT:
1.81 manu 466: case MRT_API_SUPPORT:
467: case MRT_API_CONFIG:
1.108 plunky 468: error = ip_mrouter_get(so, sopt);
1.18 mycroft 469: break;
1.31 mycroft 470: #endif
471:
1.18 mycroft 472: default:
1.108 plunky 473: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 474: break;
475: }
1.31 mycroft 476: break;
1.1 cgd 477: }
1.108 plunky 478: out:
1.100 dyoung 479: return error;
1.1 cgd 480: }
481:
1.27 mycroft 482: int
1.149 rtr 483: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27 mycroft 484: {
485:
1.138 ozaki-r 486: if (IFNET_EMPTY())
1.27 mycroft 487: return (EADDRNOTAVAIL);
1.115 joerg 488: if (addr->sin_family != AF_INET)
1.27 mycroft 489: return (EAFNOSUPPORT);
490: inp->inp_faddr = addr->sin_addr;
491: return (0);
492: }
493:
1.139 rtr 494: static void
495: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 496: {
497:
1.32 mycroft 498: inp->inp_faddr = zeroin_addr;
1.27 mycroft 499: }
500:
1.121 rmind 501: static int
502: rip_attach(struct socket *so, int proto)
503: {
504: struct inpcb *inp;
505: int error;
506:
507: KASSERT(sotoinpcb(so) == NULL);
508: sosetlock(so);
509:
510: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
511: error = soreserve(so, rip_sendspace, rip_recvspace);
512: if (error) {
513: return error;
514: }
515: }
516:
517: error = in_pcballoc(so, &rawcbtable);
518: if (error) {
519: return error;
520: }
521: inp = sotoinpcb(so);
522: inp->inp_ip.ip_p = proto;
523: KASSERT(solocked(so));
524:
525: return 0;
526: }
1.13 mycroft 527:
1.121 rmind 528: static void
529: rip_detach(struct socket *so)
1.1 cgd 530: {
1.53 augustss 531: struct inpcb *inp;
1.121 rmind 532:
533: KASSERT(solocked(so));
534: inp = sotoinpcb(so);
535: KASSERT(inp != NULL);
536:
1.13 mycroft 537: #ifdef MROUTING
1.6 hpeyerl 538: extern struct socket *ip_mrouter;
1.121 rmind 539: if (so == ip_mrouter) {
540: ip_mrouter_done();
541: }
1.6 hpeyerl 542: #endif
1.121 rmind 543: in_pcbdetach(inp);
544: }
545:
1.125 rtr 546: static int
1.148 rtr 547: rip_accept(struct socket *so, struct sockaddr *nam)
1.133 rtr 548: {
549: KASSERT(solocked(so));
550:
551: panic("rip_accept");
1.136 rtr 552:
553: return EOPNOTSUPP;
554: }
555:
556: static int
1.147 rtr 557: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136 rtr 558: {
559: struct inpcb *inp = sotoinpcb(so);
1.147 rtr 560: struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136 rtr 561: int error = 0;
562: int s;
563:
564: KASSERT(solocked(so));
565: KASSERT(inp != NULL);
566: KASSERT(nam != NULL);
567:
1.147 rtr 568: if (addr->sin_len != sizeof(*addr))
569: return EINVAL;
570:
1.136 rtr 571: s = splsoftnet();
1.138 ozaki-r 572: if (IFNET_EMPTY()) {
1.136 rtr 573: error = EADDRNOTAVAIL;
574: goto release;
575: }
576: if (addr->sin_family != AF_INET) {
577: error = EAFNOSUPPORT;
578: goto release;
579: }
580: if (!in_nullhost(addr->sin_addr) &&
581: ifa_ifwithaddr(sintosa(addr)) == 0) {
582: error = EADDRNOTAVAIL;
583: goto release;
584: }
585: inp->inp_laddr = addr->sin_addr;
586:
587: release:
588: splx(s);
589: return error;
590: }
591:
592: static int
1.142 rtr 593: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 594: {
595: KASSERT(solocked(so));
596:
1.133 rtr 597: return EOPNOTSUPP;
598: }
599:
600: static int
1.142 rtr 601: rip_connect(struct socket *so, struct mbuf *nam, struct lwp *l)
1.137 rtr 602: {
603: struct inpcb *inp = sotoinpcb(so);
604: int error = 0;
605: int s;
606:
607: KASSERT(solocked(so));
608: KASSERT(inp != NULL);
609: KASSERT(nam != NULL);
610:
611: s = splsoftnet();
1.149 rtr 612: if (nam->m_len != sizeof(struct sockaddr_in))
613: return EINVAL;
614: error = rip_connect_pcb(inp, mtod(nam, struct sockaddr_in *));
1.137 rtr 615: if (! error)
616: soisconnected(so);
1.140 rtr 617: splx(s);
1.137 rtr 618:
619: return error;
620: }
621:
1.139 rtr 622: static int
1.145 rtr 623: rip_connect2(struct socket *so, struct socket *so2)
624: {
625: KASSERT(solocked(so));
626:
627: return EOPNOTSUPP;
628: }
629:
630: static int
1.139 rtr 631: rip_disconnect(struct socket *so)
632: {
633: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 634: int s;
1.139 rtr 635:
636: KASSERT(solocked(so));
637: KASSERT(inp != NULL);
638:
1.140 rtr 639: s = splsoftnet();
1.139 rtr 640: soisdisconnected(so);
641: rip_disconnect1(inp);
1.140 rtr 642: splx(s);
643:
1.139 rtr 644: return 0;
645: }
646:
647: static int
648: rip_shutdown(struct socket *so)
649: {
1.140 rtr 650: int s;
651:
1.139 rtr 652: KASSERT(solocked(so));
653:
654: /*
655: * Mark the connection as being incapable of further input.
656: */
1.140 rtr 657: s = splsoftnet();
1.139 rtr 658: socantsendmore(so);
1.140 rtr 659: splx(s);
660:
1.139 rtr 661: return 0;
662: }
663:
664: static int
665: rip_abort(struct socket *so)
666: {
667: KASSERT(solocked(so));
668:
669: panic("rip_abort");
670:
671: return EOPNOTSUPP;
672: }
1.137 rtr 673:
674: static int
1.127 rtr 675: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 676: {
1.127 rtr 677: return in_control(so, cmd, nam, ifp);
1.125 rtr 678: }
679:
1.128 rtr 680: static int
681: rip_stat(struct socket *so, struct stat *ub)
682: {
1.131 rtr 683: KASSERT(solocked(so));
684:
1.130 rtr 685: /* stat: don't bother with a blocksize. */
686: return 0;
1.128 rtr 687: }
688:
1.132 rtr 689: static int
1.148 rtr 690: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 691: {
1.140 rtr 692: int s;
693:
1.134 rtr 694: KASSERT(solocked(so));
1.132 rtr 695: KASSERT(sotoinpcb(so) != NULL);
696: KASSERT(nam != NULL);
697:
1.140 rtr 698: s = splsoftnet();
1.148 rtr 699: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 700: splx(s);
701:
1.132 rtr 702: return 0;
703: }
704:
705: static int
1.148 rtr 706: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 707: {
1.140 rtr 708: int s;
709:
1.134 rtr 710: KASSERT(solocked(so));
1.132 rtr 711: KASSERT(sotoinpcb(so) != NULL);
712: KASSERT(nam != NULL);
713:
1.140 rtr 714: s = splsoftnet();
1.148 rtr 715: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 716: splx(s);
717:
1.132 rtr 718: return 0;
719: }
720:
1.135 rtr 721: static int
1.144 rtr 722: rip_rcvd(struct socket *so, int flags, struct lwp *l)
723: {
724: KASSERT(solocked(so));
725:
726: return EOPNOTSUPP;
727: }
728:
729: static int
1.135 rtr 730: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
731: {
732: KASSERT(solocked(so));
733:
734: return EOPNOTSUPP;
735: }
736:
737: static int
1.143 rtr 738: rip_send(struct socket *so, struct mbuf *m, struct mbuf *nam,
739: struct mbuf *control, struct lwp *l)
740: {
741: struct inpcb *inp = sotoinpcb(so);
742: int error = 0;
743: int s;
744:
745: KASSERT(solocked(so));
746: KASSERT(inp != NULL);
747: KASSERT(m != NULL);
748:
749: /*
750: * Ship a packet out. The appropriate raw output
751: * routine handles any massaging necessary.
752: */
753: if (control && control->m_len) {
754: m_freem(control);
755: m_freem(m);
756: return EINVAL;
757: }
758:
759: s = splsoftnet();
760: if (nam) {
761: if ((so->so_state & SS_ISCONNECTED) != 0) {
762: error = EISCONN;
763: goto die;
764: }
1.149 rtr 765: if (nam->m_len != sizeof(struct sockaddr_in))
766: return EINVAL;
767: error = rip_connect_pcb(inp, mtod(nam, struct sockaddr_in *));
1.143 rtr 768: if (error) {
769: die:
770: m_freem(m);
771: splx(s);
772: return error;
773: }
774: } else {
775: if ((so->so_state & SS_ISCONNECTED) == 0) {
776: error = ENOTCONN;
777: goto die;
778: }
779: }
780: error = rip_output(m, inp);
781: if (nam)
782: rip_disconnect1(inp);
783:
784: splx(s);
785: return error;
786: }
787:
788: static int
1.135 rtr 789: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
790: {
791: KASSERT(solocked(so));
792:
793: m_freem(m);
794: m_freem(control);
795:
796: return EOPNOTSUPP;
797: }
798:
1.145 rtr 799: static int
800: rip_purgeif(struct socket *so, struct ifnet *ifp)
801: {
802: int s;
803:
804: s = splsoftnet();
805: mutex_enter(softnet_lock);
806: in_pcbpurgeif0(&rawcbtable, ifp);
807: in_purgeif(ifp);
808: in_pcbpurgeif(&rawcbtable, ifp);
809: mutex_exit(softnet_lock);
810: splx(s);
811:
812: return 0;
813: }
814:
1.122 rmind 815: PR_WRAP_USRREQS(rip)
816: #define rip_attach rip_attach_wrapper
817: #define rip_detach rip_detach_wrapper
1.133 rtr 818: #define rip_accept rip_accept_wrapper
1.136 rtr 819: #define rip_bind rip_bind_wrapper
820: #define rip_listen rip_listen_wrapper
1.137 rtr 821: #define rip_connect rip_connect_wrapper
1.145 rtr 822: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 823: #define rip_disconnect rip_disconnect_wrapper
824: #define rip_shutdown rip_shutdown_wrapper
825: #define rip_abort rip_abort_wrapper
1.125 rtr 826: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 827: #define rip_stat rip_stat_wrapper
1.132 rtr 828: #define rip_peeraddr rip_peeraddr_wrapper
829: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 830: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 831: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 832: #define rip_send rip_send_wrapper
1.135 rtr 833: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 834: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 835:
836: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 837: .pr_attach = rip_attach,
838: .pr_detach = rip_detach,
1.133 rtr 839: .pr_accept = rip_accept,
1.136 rtr 840: .pr_bind = rip_bind,
841: .pr_listen = rip_listen,
1.137 rtr 842: .pr_connect = rip_connect,
1.145 rtr 843: .pr_connect2 = rip_connect2,
1.139 rtr 844: .pr_disconnect = rip_disconnect,
845: .pr_shutdown = rip_shutdown,
846: .pr_abort = rip_abort,
1.125 rtr 847: .pr_ioctl = rip_ioctl,
1.128 rtr 848: .pr_stat = rip_stat,
1.132 rtr 849: .pr_peeraddr = rip_peeraddr,
850: .pr_sockaddr = rip_sockaddr,
1.144 rtr 851: .pr_rcvd = rip_rcvd,
1.135 rtr 852: .pr_recvoob = rip_recvoob,
1.143 rtr 853: .pr_send = rip_send,
1.135 rtr 854: .pr_sendoob = rip_sendoob,
1.145 rtr 855: .pr_purgeif = rip_purgeif,
1.120 rmind 856: };
857:
1.110 pooka 858: static void
859: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 860: {
861:
862: sysctl_createv(clog, 0, NULL, NULL,
863: CTLFLAG_PERMANENT,
864: CTLTYPE_NODE, "inet", NULL,
865: NULL, 0, NULL, 0,
866: CTL_NET, PF_INET, CTL_EOL);
867: sysctl_createv(clog, 0, NULL, NULL,
868: CTLFLAG_PERMANENT,
869: CTLTYPE_NODE, "raw",
870: SYSCTL_DESCR("Raw IPv4 settings"),
871: NULL, 0, NULL, 0,
872: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
873:
874: sysctl_createv(clog, 0, NULL, NULL,
875: CTLFLAG_PERMANENT,
1.86 atatat 876: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 877: SYSCTL_DESCR("Raw IPv4 control block list"),
878: sysctl_inpcblist, 0, &rawcbtable, 0,
879: CTL_NET, PF_INET, IPPROTO_RAW,
880: CTL_CREATE, CTL_EOL);
881: }
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