Annotation of src/sys/netinet/raw_ip.c, Revision 1.159
1.159 ! ozaki-r 1: /* $NetBSD: raw_ip.c,v 1.158 2016/05/12 02:24:17 ozaki-r 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>
1.159 ! ozaki-r 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.158 2016/05/12 02:24:17 ozaki-r Exp $");
1.40 scottr 69:
1.153 pooka 70: #ifdef _KERNEL_OPT
1.78 jonathan 71: #include "opt_inet.h"
1.109 christos 72: #include "opt_compat_netbsd.h"
1.45 thorpej 73: #include "opt_ipsec.h"
1.40 scottr 74: #include "opt_mrouting.h"
1.153 pooka 75: #endif
1.1 cgd 76:
1.7 mycroft 77: #include <sys/param.h>
1.84 atatat 78: #include <sys/sysctl.h>
1.7 mycroft 79: #include <sys/mbuf.h>
80: #include <sys/socket.h>
81: #include <sys/protosw.h>
82: #include <sys/socketvar.h>
83: #include <sys/errno.h>
1.13 mycroft 84: #include <sys/systm.h>
1.26 mycroft 85: #include <sys/proc.h>
1.89 elad 86: #include <sys/kauth.h>
1.1 cgd 87:
1.7 mycroft 88: #include <net/if.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));
1.149 rtr 115: static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
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);
1.156 riastrad 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
1.154 riastrad 313: rip_output(struct mbuf *m, struct inpcb *inp)
1.24 christos 314: {
1.53 augustss 315: struct ip *ip;
1.10 mycroft 316: struct mbuf *opts;
1.24 christos 317: int flags;
318:
1.27 mycroft 319: flags =
1.37 matt 320: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
321: | IP_RETURNMTU;
1.1 cgd 322:
323: /*
324: * If the user handed us a complete IP packet, use it.
325: * Otherwise, allocate an mbuf for a header and fill it in.
326: */
1.13 mycroft 327: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 328: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
329: m_freem(m);
330: return (EMSGSIZE);
331: }
1.68 itojun 332: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
333: if (!m)
334: return (ENOBUFS);
1.1 cgd 335: ip = mtod(m, struct ip *);
336: ip->ip_tos = 0;
1.62 itojun 337: ip->ip_off = htons(0);
1.13 mycroft 338: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 339: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 340: ip->ip_src = inp->inp_laddr;
1.27 mycroft 341: ip->ip_dst = inp->inp_faddr;
1.1 cgd 342: ip->ip_ttl = MAXTTL;
1.13 mycroft 343: opts = inp->inp_options;
344: } else {
1.35 thorpej 345: if (m->m_pkthdr.len > IP_MAXPACKET) {
346: m_freem(m);
347: return (EMSGSIZE);
348: }
1.13 mycroft 349: ip = mtod(m, struct ip *);
1.65 thorpej 350:
351: /*
352: * If the mbuf is read-only, we need to allocate
353: * a new mbuf for the header, since we need to
354: * modify the header.
355: */
356: if (M_READONLY(m)) {
357: int hlen = ip->ip_hl << 2;
358:
359: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
360: if (m == NULL)
361: return (ENOMEM); /* XXX */
362: ip = mtod(m, struct ip *);
363: }
364:
1.62 itojun 365: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 366: if (m->m_pkthdr.len != ip->ip_len) {
367: m_freem(m);
368: return (EINVAL);
369: }
1.62 itojun 370: HTONS(ip->ip_len);
371: HTONS(ip->ip_off);
1.103 matt 372: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
373: flags |= IP_NOIPNEWID;
1.13 mycroft 374: opts = NULL;
375: /* XXX prevent ip_output from overwriting header fields */
376: flags |= IP_RAWOUTPUT;
1.105 thorpej 377: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 378: }
1.123 rmind 379:
380: /*
381: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
382: * will be stored in inp_errormtu.
383: */
384: return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
385: inp->inp_socket);
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
1.149 rtr 478: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27 mycroft 479: {
480:
1.158 ozaki-r 481: if (IFNET_READER_EMPTY())
1.27 mycroft 482: return (EADDRNOTAVAIL);
1.115 joerg 483: if (addr->sin_family != AF_INET)
1.27 mycroft 484: return (EAFNOSUPPORT);
485: inp->inp_faddr = addr->sin_addr;
486: return (0);
487: }
488:
1.139 rtr 489: static void
490: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 491: {
492:
1.32 mycroft 493: inp->inp_faddr = zeroin_addr;
1.27 mycroft 494: }
495:
1.121 rmind 496: static int
497: rip_attach(struct socket *so, int proto)
498: {
499: struct inpcb *inp;
500: int error;
501:
502: KASSERT(sotoinpcb(so) == NULL);
503: sosetlock(so);
504:
505: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
506: error = soreserve(so, rip_sendspace, rip_recvspace);
507: if (error) {
508: return error;
509: }
510: }
511:
512: error = in_pcballoc(so, &rawcbtable);
513: if (error) {
514: return error;
515: }
516: inp = sotoinpcb(so);
517: inp->inp_ip.ip_p = proto;
518: KASSERT(solocked(so));
519:
520: return 0;
521: }
1.13 mycroft 522:
1.121 rmind 523: static void
524: rip_detach(struct socket *so)
1.1 cgd 525: {
1.53 augustss 526: struct inpcb *inp;
1.121 rmind 527:
528: KASSERT(solocked(so));
529: inp = sotoinpcb(so);
530: KASSERT(inp != NULL);
531:
1.13 mycroft 532: #ifdef MROUTING
1.6 hpeyerl 533: extern struct socket *ip_mrouter;
1.121 rmind 534: if (so == ip_mrouter) {
535: ip_mrouter_done();
536: }
1.6 hpeyerl 537: #endif
1.121 rmind 538: in_pcbdetach(inp);
539: }
540:
1.125 rtr 541: static int
1.148 rtr 542: rip_accept(struct socket *so, struct sockaddr *nam)
1.133 rtr 543: {
544: KASSERT(solocked(so));
545:
546: panic("rip_accept");
1.136 rtr 547:
548: return EOPNOTSUPP;
549: }
550:
551: static int
1.147 rtr 552: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136 rtr 553: {
554: struct inpcb *inp = sotoinpcb(so);
1.147 rtr 555: struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136 rtr 556: int error = 0;
1.159 ! ozaki-r 557: int s, ss;
! 558: struct ifaddr *ifa;
1.136 rtr 559:
560: KASSERT(solocked(so));
561: KASSERT(inp != NULL);
562: KASSERT(nam != NULL);
563:
1.147 rtr 564: if (addr->sin_len != sizeof(*addr))
565: return EINVAL;
566:
1.136 rtr 567: s = splsoftnet();
1.158 ozaki-r 568: if (IFNET_READER_EMPTY()) {
1.136 rtr 569: error = EADDRNOTAVAIL;
570: goto release;
571: }
572: if (addr->sin_family != AF_INET) {
573: error = EAFNOSUPPORT;
574: goto release;
575: }
1.159 ! ozaki-r 576: ss = pserialize_read_enter();
! 577: if ((ifa = ifa_ifwithaddr(sintosa(addr))) == NULL &&
1.151 roy 578: !in_nullhost(addr->sin_addr))
579: {
1.159 ! ozaki-r 580: pserialize_read_exit(ss);
1.136 rtr 581: error = EADDRNOTAVAIL;
582: goto release;
583: }
1.159 ! ozaki-r 584: if (ifa && (ifatoia(ifa))->ia4_flags &
1.151 roy 585: (IN6_IFF_NOTREADY | IN_IFF_DETACHED))
586: {
1.159 ! ozaki-r 587: pserialize_read_exit(ss);
1.151 roy 588: error = EADDRNOTAVAIL;
589: goto release;
590: }
1.159 ! ozaki-r 591: pserialize_read_exit(ss);
1.151 roy 592:
1.136 rtr 593: inp->inp_laddr = addr->sin_addr;
594:
595: release:
596: splx(s);
597: return error;
598: }
599:
600: static int
1.142 rtr 601: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 602: {
603: KASSERT(solocked(so));
604:
1.133 rtr 605: return EOPNOTSUPP;
606: }
607:
608: static int
1.152 rtr 609: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137 rtr 610: {
611: struct inpcb *inp = sotoinpcb(so);
612: int error = 0;
613: int s;
614:
615: KASSERT(solocked(so));
616: KASSERT(inp != NULL);
617: KASSERT(nam != NULL);
618:
619: s = splsoftnet();
1.152 rtr 620: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137 rtr 621: if (! error)
622: soisconnected(so);
1.140 rtr 623: splx(s);
1.137 rtr 624:
625: return error;
626: }
627:
1.139 rtr 628: static int
1.145 rtr 629: rip_connect2(struct socket *so, struct socket *so2)
630: {
631: KASSERT(solocked(so));
632:
633: return EOPNOTSUPP;
634: }
635:
636: static int
1.139 rtr 637: rip_disconnect(struct socket *so)
638: {
639: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 640: int s;
1.139 rtr 641:
642: KASSERT(solocked(so));
643: KASSERT(inp != NULL);
644:
1.140 rtr 645: s = splsoftnet();
1.139 rtr 646: soisdisconnected(so);
647: rip_disconnect1(inp);
1.140 rtr 648: splx(s);
649:
1.139 rtr 650: return 0;
651: }
652:
653: static int
654: rip_shutdown(struct socket *so)
655: {
1.140 rtr 656: int s;
657:
1.139 rtr 658: KASSERT(solocked(so));
659:
660: /*
661: * Mark the connection as being incapable of further input.
662: */
1.140 rtr 663: s = splsoftnet();
1.139 rtr 664: socantsendmore(so);
1.140 rtr 665: splx(s);
666:
1.139 rtr 667: return 0;
668: }
669:
670: static int
671: rip_abort(struct socket *so)
672: {
673: KASSERT(solocked(so));
674:
675: panic("rip_abort");
676:
677: return EOPNOTSUPP;
678: }
1.137 rtr 679:
680: static int
1.127 rtr 681: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 682: {
1.127 rtr 683: return in_control(so, cmd, nam, ifp);
1.125 rtr 684: }
685:
1.128 rtr 686: static int
687: rip_stat(struct socket *so, struct stat *ub)
688: {
1.131 rtr 689: KASSERT(solocked(so));
690:
1.130 rtr 691: /* stat: don't bother with a blocksize. */
692: return 0;
1.128 rtr 693: }
694:
1.132 rtr 695: static int
1.148 rtr 696: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 697: {
1.140 rtr 698: int s;
699:
1.134 rtr 700: KASSERT(solocked(so));
1.132 rtr 701: KASSERT(sotoinpcb(so) != NULL);
702: KASSERT(nam != NULL);
703:
1.140 rtr 704: s = splsoftnet();
1.148 rtr 705: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 706: splx(s);
707:
1.132 rtr 708: return 0;
709: }
710:
711: static int
1.148 rtr 712: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 713: {
1.140 rtr 714: int s;
715:
1.134 rtr 716: KASSERT(solocked(so));
1.132 rtr 717: KASSERT(sotoinpcb(so) != NULL);
718: KASSERT(nam != NULL);
719:
1.140 rtr 720: s = splsoftnet();
1.148 rtr 721: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 722: splx(s);
723:
1.132 rtr 724: return 0;
725: }
726:
1.135 rtr 727: static int
1.144 rtr 728: rip_rcvd(struct socket *so, int flags, struct lwp *l)
729: {
730: KASSERT(solocked(so));
731:
732: return EOPNOTSUPP;
733: }
734:
735: static int
1.135 rtr 736: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
737: {
738: KASSERT(solocked(so));
739:
740: return EOPNOTSUPP;
741: }
742:
743: static int
1.152 rtr 744: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143 rtr 745: struct mbuf *control, struct lwp *l)
746: {
747: struct inpcb *inp = sotoinpcb(so);
748: int error = 0;
749: int s;
750:
751: KASSERT(solocked(so));
752: KASSERT(inp != NULL);
753: KASSERT(m != NULL);
754:
755: /*
756: * Ship a packet out. The appropriate raw output
757: * routine handles any massaging necessary.
758: */
759: if (control && control->m_len) {
760: m_freem(control);
761: m_freem(m);
762: return EINVAL;
763: }
764:
765: s = splsoftnet();
766: if (nam) {
767: if ((so->so_state & SS_ISCONNECTED) != 0) {
768: error = EISCONN;
769: goto die;
770: }
1.152 rtr 771: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.143 rtr 772: if (error) {
773: die:
774: m_freem(m);
775: splx(s);
776: return error;
777: }
778: } else {
779: if ((so->so_state & SS_ISCONNECTED) == 0) {
780: error = ENOTCONN;
781: goto die;
782: }
783: }
784: error = rip_output(m, inp);
785: if (nam)
786: rip_disconnect1(inp);
787:
788: splx(s);
789: return error;
790: }
791:
792: static int
1.135 rtr 793: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
794: {
795: KASSERT(solocked(so));
796:
797: m_freem(m);
798: m_freem(control);
799:
800: return EOPNOTSUPP;
801: }
802:
1.145 rtr 803: static int
804: rip_purgeif(struct socket *so, struct ifnet *ifp)
805: {
806: int s;
807:
808: s = splsoftnet();
809: mutex_enter(softnet_lock);
810: in_pcbpurgeif0(&rawcbtable, ifp);
811: in_purgeif(ifp);
812: in_pcbpurgeif(&rawcbtable, ifp);
813: mutex_exit(softnet_lock);
814: splx(s);
815:
816: return 0;
817: }
818:
1.122 rmind 819: PR_WRAP_USRREQS(rip)
820: #define rip_attach rip_attach_wrapper
821: #define rip_detach rip_detach_wrapper
1.133 rtr 822: #define rip_accept rip_accept_wrapper
1.136 rtr 823: #define rip_bind rip_bind_wrapper
824: #define rip_listen rip_listen_wrapper
1.137 rtr 825: #define rip_connect rip_connect_wrapper
1.145 rtr 826: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 827: #define rip_disconnect rip_disconnect_wrapper
828: #define rip_shutdown rip_shutdown_wrapper
829: #define rip_abort rip_abort_wrapper
1.125 rtr 830: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 831: #define rip_stat rip_stat_wrapper
1.132 rtr 832: #define rip_peeraddr rip_peeraddr_wrapper
833: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 834: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 835: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 836: #define rip_send rip_send_wrapper
1.135 rtr 837: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 838: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 839:
840: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 841: .pr_attach = rip_attach,
842: .pr_detach = rip_detach,
1.133 rtr 843: .pr_accept = rip_accept,
1.136 rtr 844: .pr_bind = rip_bind,
845: .pr_listen = rip_listen,
1.137 rtr 846: .pr_connect = rip_connect,
1.145 rtr 847: .pr_connect2 = rip_connect2,
1.139 rtr 848: .pr_disconnect = rip_disconnect,
849: .pr_shutdown = rip_shutdown,
850: .pr_abort = rip_abort,
1.125 rtr 851: .pr_ioctl = rip_ioctl,
1.128 rtr 852: .pr_stat = rip_stat,
1.132 rtr 853: .pr_peeraddr = rip_peeraddr,
854: .pr_sockaddr = rip_sockaddr,
1.144 rtr 855: .pr_rcvd = rip_rcvd,
1.135 rtr 856: .pr_recvoob = rip_recvoob,
1.143 rtr 857: .pr_send = rip_send,
1.135 rtr 858: .pr_sendoob = rip_sendoob,
1.145 rtr 859: .pr_purgeif = rip_purgeif,
1.120 rmind 860: };
861:
1.110 pooka 862: static void
863: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 864: {
865:
866: sysctl_createv(clog, 0, NULL, NULL,
867: CTLFLAG_PERMANENT,
868: CTLTYPE_NODE, "inet", NULL,
869: NULL, 0, NULL, 0,
870: CTL_NET, PF_INET, CTL_EOL);
871: sysctl_createv(clog, 0, NULL, NULL,
872: CTLFLAG_PERMANENT,
873: CTLTYPE_NODE, "raw",
874: SYSCTL_DESCR("Raw IPv4 settings"),
875: NULL, 0, NULL, 0,
876: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
877:
878: sysctl_createv(clog, 0, NULL, NULL,
879: CTLFLAG_PERMANENT,
1.86 atatat 880: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 881: SYSCTL_DESCR("Raw IPv4 control block list"),
882: sysctl_inpcblist, 0, &rawcbtable, 0,
883: CTL_NET, PF_INET, IPPROTO_RAW,
884: CTL_CREATE, CTL_EOL);
885: }
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