Annotation of src/sys/netinet/raw_ip.c, Revision 1.164
1.164 ! ozaki-r 1: /* $NetBSD: raw_ip.c,v 1.163 2017/03/03 07:13:06 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>
1.164 ! ozaki-r 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.163 2017/03/03 07:13:06 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"
1.162 ozaki-r 75: #include "opt_net_mpsafe.h"
1.153 pooka 76: #endif
1.1 cgd 77:
1.7 mycroft 78: #include <sys/param.h>
1.84 atatat 79: #include <sys/sysctl.h>
1.7 mycroft 80: #include <sys/mbuf.h>
81: #include <sys/socket.h>
82: #include <sys/protosw.h>
83: #include <sys/socketvar.h>
84: #include <sys/errno.h>
1.13 mycroft 85: #include <sys/systm.h>
1.26 mycroft 86: #include <sys/proc.h>
1.89 elad 87: #include <sys/kauth.h>
1.1 cgd 88:
1.7 mycroft 89: #include <net/if.h>
1.1 cgd 90:
1.7 mycroft 91: #include <netinet/in.h>
92: #include <netinet/in_systm.h>
93: #include <netinet/ip.h>
94: #include <netinet/ip_var.h>
1.105 thorpej 95: #include <netinet/ip_private.h>
1.13 mycroft 96: #include <netinet/ip_mroute.h>
1.44 darrenr 97: #include <netinet/ip_icmp.h>
1.7 mycroft 98: #include <netinet/in_pcb.h>
1.87 yamt 99: #include <netinet/in_proto.h>
1.24 christos 100: #include <netinet/in_var.h>
101:
1.116 christos 102: #ifdef IPSEC
1.72 jonathan 103: #include <netipsec/ipsec.h>
1.106 thorpej 104: #include <netipsec/ipsec_var.h>
105: #include <netipsec/ipsec_private.h>
1.116 christos 106: #endif /* IPSEC */
1.72 jonathan 107:
1.109 christos 108: #ifdef COMPAT_50
109: #include <compat/sys/socket.h>
110: #endif
111:
1.20 mycroft 112: struct inpcbtable rawcbtable;
1.30 pk 113:
1.82 perry 114: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
115: struct in_addr, int, int, void (*)(struct inpcb *, int));
1.149 rtr 116: static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
1.139 rtr 117: static void rip_disconnect1(struct inpcb *);
1.13 mycroft 118:
1.110 pooka 119: static void sysctl_net_inet_raw_setup(struct sysctllog **);
120:
1.13 mycroft 121: /*
122: * Nominal space allocated to a raw ip socket.
123: */
124: #define RIPSNDQ 8192
125: #define RIPRCVQ 8192
1.1 cgd 126:
1.121 rmind 127: static u_long rip_sendspace = RIPSNDQ;
128: static u_long rip_recvspace = RIPRCVQ;
129:
1.1 cgd 130: /*
131: * Raw interface to IP protocol.
132: */
1.13 mycroft 133:
134: /*
135: * Initialize raw connection block q.
136: */
137: void
1.83 perry 138: rip_init(void)
1.13 mycroft 139: {
140:
1.110 pooka 141: sysctl_net_inet_raw_setup(NULL);
1.33 mycroft 142: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 143: }
144:
1.100 dyoung 145: static void
146: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
147: int hlen, struct mbuf *opts, struct mbuf *n)
148: {
149: if (last->inp_flags & INP_NOHEADER)
150: m_adj(n, hlen);
1.109 christos 151: if (last->inp_flags & INP_CONTROLOPTS
152: #ifdef SO_OTIMESTAMP
153: || last->inp_socket->so_options & SO_OTIMESTAMP
154: #endif
155: || last->inp_socket->so_options & SO_TIMESTAMP)
1.100 dyoung 156: ip_savecontrol(last, &opts, ip, n);
157: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
158: /* should notify about lost packet */
159: m_freem(n);
160: if (opts)
161: m_freem(opts);
162: } else
163: sorwakeup(last->inp_socket);
164: }
165:
1.1 cgd 166: /*
167: * Setup generic address and protocol structures
168: * for raw_input routine, then pass them along with
169: * mbuf chain.
170: */
1.9 mycroft 171: void
1.24 christos 172: rip_input(struct mbuf *m, ...)
1.1 cgd 173: {
1.100 dyoung 174: int hlen, proto;
1.53 augustss 175: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 176: struct inpcb_hdr *inph;
1.53 augustss 177: struct inpcb *inp;
1.97 dyoung 178: struct inpcb *last = NULL;
179: struct mbuf *n, *opts = NULL;
1.32 mycroft 180: struct sockaddr_in ripsrc;
1.43 itojun 181: va_list ap;
182:
183: va_start(ap, m);
1.64 simonb 184: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 185: proto = va_arg(ap, int);
186: va_end(ap);
1.1 cgd 187:
1.97 dyoung 188: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 189:
190: /*
191: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 192: * XXX to have the header length subtracted, and in host order.
193: * XXX ip_off is also expected to be host order.
1.42 thorpej 194: */
1.100 dyoung 195: hlen = ip->ip_hl << 2;
196: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 197: NTOHS(ip->ip_off);
1.32 mycroft 198:
1.117 christos 199: TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75 itojun 200: inp = (struct inpcb *)inph;
201: if (inp->inp_af != AF_INET)
202: continue;
1.43 itojun 203: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 204: continue;
1.32 mycroft 205: if (!in_nullhost(inp->inp_laddr) &&
206: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 207: continue;
1.32 mycroft 208: if (!in_nullhost(inp->inp_faddr) &&
209: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 210: continue;
1.97 dyoung 211: if (last == NULL)
212: ;
1.116 christos 213: #if defined(IPSEC)
1.97 dyoung 214: /* check AH/ESP integrity. */
1.124 christos 215: else if (ipsec_used &&
1.164 ! ozaki-r 216: ipsec4_in_reject(m, last)) {
1.106 thorpej 217: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 218: /* do not inject data to pcb */
219: }
220: #endif /*IPSEC*/
1.99 dyoung 221: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 222: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
223: n);
1.97 dyoung 224: opts = NULL;
1.13 mycroft 225: }
1.36 thorpej 226: last = inp;
1.13 mycroft 227: }
1.116 christos 228: #if defined(IPSEC)
1.55 itojun 229: /* check AH/ESP integrity. */
1.124 christos 230: if (ipsec_used && last != NULL
1.164 ! ozaki-r 231: && ipsec4_in_reject(m, last)) {
1.55 itojun 232: m_freem(m);
1.106 thorpej 233: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 234: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 235: /* do not inject data to pcb */
236: } else
237: #endif /*IPSEC*/
1.100 dyoung 238: if (last != NULL)
239: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
1.156 riastrad 240: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 241: uint64_t *ips;
242:
1.97 dyoung 243: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
244: 0, 0);
1.105 thorpej 245: ips = IP_STAT_GETREF();
246: ips[IP_STAT_NOPROTO]++;
247: ips[IP_STAT_DELIVERED]--;
248: IP_STAT_PUTREF();
1.97 dyoung 249: } else
250: m_freem(m);
1.43 itojun 251: return;
1.60 itojun 252: }
253:
254: int
1.83 perry 255: rip_pcbnotify(struct inpcbtable *table,
256: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
257: void (*notify)(struct inpcb *, int))
1.60 itojun 258: {
1.117 christos 259: struct inpcb_hdr *inph, *ninph;
1.60 itojun 260: int nmatch;
261:
262: nmatch = 0;
1.117 christos 263: TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
264: struct inpcb *inp = (struct inpcb *)inph;
1.75 itojun 265: if (inp->inp_af != AF_INET)
266: continue;
1.60 itojun 267: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
268: continue;
269: if (in_hosteq(inp->inp_faddr, faddr) &&
270: in_hosteq(inp->inp_laddr, laddr)) {
271: (*notify)(inp, errno);
272: nmatch++;
273: }
274: }
275:
276: return nmatch;
277: }
278:
279: void *
1.95 dyoung 280: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 281: {
282: struct ip *ip = v;
1.82 perry 283: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 284: int errno;
285:
286: if (sa->sa_family != AF_INET ||
287: sa->sa_len != sizeof(struct sockaddr_in))
288: return NULL;
289: if ((unsigned)cmd >= PRC_NCMDS)
290: return NULL;
291: errno = inetctlerrmap[cmd];
292: if (PRC_IS_REDIRECT(cmd))
293: notify = in_rtchange, ip = 0;
294: else if (cmd == PRC_HOSTDEAD)
295: ip = 0;
296: else if (errno == 0)
297: return NULL;
298: if (ip) {
1.95 dyoung 299: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 300: ip->ip_src, ip->ip_p, errno, notify);
301:
302: /* XXX mapped address case */
303: } else
1.95 dyoung 304: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 305: notify);
306: return NULL;
1.1 cgd 307: }
308:
309: /*
310: * Generate IP header and pass packet to ip_output.
311: * Tack on options user may have setup with control call.
312: */
1.9 mycroft 313: int
1.154 riastrad 314: rip_output(struct mbuf *m, struct inpcb *inp)
1.24 christos 315: {
1.53 augustss 316: struct ip *ip;
1.10 mycroft 317: struct mbuf *opts;
1.24 christos 318: int flags;
319:
1.27 mycroft 320: flags =
1.37 matt 321: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
322: | IP_RETURNMTU;
1.1 cgd 323:
324: /*
325: * If the user handed us a complete IP packet, use it.
326: * Otherwise, allocate an mbuf for a header and fill it in.
327: */
1.13 mycroft 328: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 329: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
330: m_freem(m);
331: return (EMSGSIZE);
332: }
1.68 itojun 333: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
334: if (!m)
335: return (ENOBUFS);
1.1 cgd 336: ip = mtod(m, struct ip *);
337: ip->ip_tos = 0;
1.62 itojun 338: ip->ip_off = htons(0);
1.13 mycroft 339: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 340: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 341: ip->ip_src = inp->inp_laddr;
1.27 mycroft 342: ip->ip_dst = inp->inp_faddr;
1.1 cgd 343: ip->ip_ttl = MAXTTL;
1.13 mycroft 344: opts = inp->inp_options;
345: } else {
1.35 thorpej 346: if (m->m_pkthdr.len > IP_MAXPACKET) {
347: m_freem(m);
348: return (EMSGSIZE);
349: }
1.13 mycroft 350: ip = mtod(m, struct ip *);
1.65 thorpej 351:
352: /*
353: * If the mbuf is read-only, we need to allocate
354: * a new mbuf for the header, since we need to
355: * modify the header.
356: */
357: if (M_READONLY(m)) {
358: int hlen = ip->ip_hl << 2;
359:
360: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
361: if (m == NULL)
362: return (ENOMEM); /* XXX */
363: ip = mtod(m, struct ip *);
364: }
365:
1.62 itojun 366: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 367: if (m->m_pkthdr.len != ip->ip_len) {
368: m_freem(m);
369: return (EINVAL);
370: }
1.62 itojun 371: HTONS(ip->ip_len);
372: HTONS(ip->ip_off);
1.103 matt 373: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
374: flags |= IP_NOIPNEWID;
1.13 mycroft 375: opts = NULL;
376: /* XXX prevent ip_output from overwriting header fields */
377: flags |= IP_RAWOUTPUT;
1.105 thorpej 378: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 379: }
1.123 rmind 380:
381: /*
382: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
383: * will be stored in inp_errormtu.
384: */
385: return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.163 ozaki-r 386: inp);
1.1 cgd 387: }
388:
389: /*
390: * Raw IP socket option processing.
391: */
1.9 mycroft 392: int
1.108 plunky 393: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 394: {
1.53 augustss 395: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 396: int error = 0;
1.108 plunky 397: int optval;
1.1 cgd 398:
1.108 plunky 399: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 400: if (op == PRCO_GETOPT) {
1.108 plunky 401: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
402: error = sockopt_set(sopt, &optval, sizeof(optval));
403: } else if (op == PRCO_SETOPT) {
404: error = sockopt_getint(sopt, &optval);
405: if (error)
406: goto out;
407: if (optval) {
408: inp->inp_flags &= ~INP_HDRINCL;
409: inp->inp_flags |= INP_NOHEADER;
410: } else
411: inp->inp_flags &= ~INP_NOHEADER;
412: }
413: goto out;
414: } else if (sopt->sopt_level != IPPROTO_IP)
415: return ip_ctloutput(op, so, sopt);
1.100 dyoung 416:
417: switch (op) {
1.31 mycroft 418:
419: case PRCO_SETOPT:
1.108 plunky 420: switch (sopt->sopt_name) {
1.31 mycroft 421: case IP_HDRINCL:
1.108 plunky 422: error = sockopt_getint(sopt, &optval);
423: if (error)
424: break;
425: if (optval)
1.100 dyoung 426: inp->inp_flags |= INP_HDRINCL;
427: else
428: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 429: break;
1.31 mycroft 430:
431: #ifdef MROUTING
432: case MRT_INIT:
433: case MRT_DONE:
434: case MRT_ADD_VIF:
435: case MRT_DEL_VIF:
436: case MRT_ADD_MFC:
437: case MRT_DEL_MFC:
438: case MRT_ASSERT:
1.81 manu 439: case MRT_API_CONFIG:
440: case MRT_ADD_BW_UPCALL:
441: case MRT_DEL_BW_UPCALL:
1.108 plunky 442: error = ip_mrouter_set(so, sopt);
1.31 mycroft 443: break;
444: #endif
445:
446: default:
1.108 plunky 447: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 448: break;
1.13 mycroft 449: }
450: break;
1.1 cgd 451:
1.31 mycroft 452: case PRCO_GETOPT:
1.108 plunky 453: switch (sopt->sopt_name) {
1.31 mycroft 454: case IP_HDRINCL:
1.108 plunky 455: optval = inp->inp_flags & INP_HDRINCL;
456: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 457: break;
458:
1.6 hpeyerl 459: #ifdef MROUTING
1.31 mycroft 460: case MRT_VERSION:
461: case MRT_ASSERT:
1.81 manu 462: case MRT_API_SUPPORT:
463: case MRT_API_CONFIG:
1.108 plunky 464: error = ip_mrouter_get(so, sopt);
1.18 mycroft 465: break;
1.31 mycroft 466: #endif
467:
1.18 mycroft 468: default:
1.108 plunky 469: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 470: break;
471: }
1.31 mycroft 472: break;
1.1 cgd 473: }
1.108 plunky 474: out:
1.100 dyoung 475: return error;
1.1 cgd 476: }
477:
1.27 mycroft 478: int
1.149 rtr 479: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27 mycroft 480: {
481:
1.158 ozaki-r 482: if (IFNET_READER_EMPTY())
1.27 mycroft 483: return (EADDRNOTAVAIL);
1.115 joerg 484: if (addr->sin_family != AF_INET)
1.27 mycroft 485: return (EAFNOSUPPORT);
486: inp->inp_faddr = addr->sin_addr;
487: return (0);
488: }
489:
1.139 rtr 490: static void
491: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 492: {
493:
1.32 mycroft 494: inp->inp_faddr = zeroin_addr;
1.27 mycroft 495: }
496:
1.121 rmind 497: static int
498: rip_attach(struct socket *so, int proto)
499: {
500: struct inpcb *inp;
501: int error;
502:
503: KASSERT(sotoinpcb(so) == NULL);
504: sosetlock(so);
505:
506: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
507: error = soreserve(so, rip_sendspace, rip_recvspace);
508: if (error) {
509: return error;
510: }
511: }
512:
513: error = in_pcballoc(so, &rawcbtable);
514: if (error) {
515: return error;
516: }
517: inp = sotoinpcb(so);
518: inp->inp_ip.ip_p = proto;
519: KASSERT(solocked(so));
520:
521: return 0;
522: }
1.13 mycroft 523:
1.121 rmind 524: static void
525: rip_detach(struct socket *so)
1.1 cgd 526: {
1.53 augustss 527: struct inpcb *inp;
1.121 rmind 528:
529: KASSERT(solocked(so));
530: inp = sotoinpcb(so);
531: KASSERT(inp != NULL);
532:
1.13 mycroft 533: #ifdef MROUTING
1.6 hpeyerl 534: extern struct socket *ip_mrouter;
1.121 rmind 535: if (so == ip_mrouter) {
536: ip_mrouter_done();
537: }
1.6 hpeyerl 538: #endif
1.121 rmind 539: in_pcbdetach(inp);
540: }
541:
1.125 rtr 542: static int
1.148 rtr 543: rip_accept(struct socket *so, struct sockaddr *nam)
1.133 rtr 544: {
545: KASSERT(solocked(so));
546:
547: panic("rip_accept");
1.136 rtr 548:
549: return EOPNOTSUPP;
550: }
551:
552: static int
1.147 rtr 553: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136 rtr 554: {
555: struct inpcb *inp = sotoinpcb(so);
1.147 rtr 556: struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136 rtr 557: int error = 0;
1.159 ozaki-r 558: int s, ss;
559: struct ifaddr *ifa;
1.136 rtr 560:
561: KASSERT(solocked(so));
562: KASSERT(inp != NULL);
563: KASSERT(nam != NULL);
564:
1.147 rtr 565: if (addr->sin_len != sizeof(*addr))
566: return EINVAL;
567:
1.136 rtr 568: s = splsoftnet();
1.158 ozaki-r 569: if (IFNET_READER_EMPTY()) {
1.136 rtr 570: error = EADDRNOTAVAIL;
571: goto release;
572: }
573: if (addr->sin_family != AF_INET) {
574: error = EAFNOSUPPORT;
575: goto release;
576: }
1.159 ozaki-r 577: ss = pserialize_read_enter();
578: if ((ifa = ifa_ifwithaddr(sintosa(addr))) == NULL &&
1.151 roy 579: !in_nullhost(addr->sin_addr))
580: {
1.159 ozaki-r 581: pserialize_read_exit(ss);
1.136 rtr 582: error = EADDRNOTAVAIL;
583: goto release;
584: }
1.161 roy 585: if (ifa && (ifatoia(ifa))->ia4_flags & IN6_IFF_DUPLICATED) {
1.159 ozaki-r 586: pserialize_read_exit(ss);
1.151 roy 587: error = EADDRNOTAVAIL;
588: goto release;
589: }
1.159 ozaki-r 590: pserialize_read_exit(ss);
1.151 roy 591:
1.136 rtr 592: inp->inp_laddr = addr->sin_addr;
593:
594: release:
595: splx(s);
596: return error;
597: }
598:
599: static int
1.142 rtr 600: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 601: {
602: KASSERT(solocked(so));
603:
1.133 rtr 604: return EOPNOTSUPP;
605: }
606:
607: static int
1.152 rtr 608: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137 rtr 609: {
610: struct inpcb *inp = sotoinpcb(so);
611: int error = 0;
612: int s;
613:
614: KASSERT(solocked(so));
615: KASSERT(inp != NULL);
616: KASSERT(nam != NULL);
617:
618: s = splsoftnet();
1.152 rtr 619: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137 rtr 620: if (! error)
621: soisconnected(so);
1.140 rtr 622: splx(s);
1.137 rtr 623:
624: return error;
625: }
626:
1.139 rtr 627: static int
1.145 rtr 628: rip_connect2(struct socket *so, struct socket *so2)
629: {
630: KASSERT(solocked(so));
631:
632: return EOPNOTSUPP;
633: }
634:
635: static int
1.139 rtr 636: rip_disconnect(struct socket *so)
637: {
638: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 639: int s;
1.139 rtr 640:
641: KASSERT(solocked(so));
642: KASSERT(inp != NULL);
643:
1.140 rtr 644: s = splsoftnet();
1.139 rtr 645: soisdisconnected(so);
646: rip_disconnect1(inp);
1.140 rtr 647: splx(s);
648:
1.139 rtr 649: return 0;
650: }
651:
652: static int
653: rip_shutdown(struct socket *so)
654: {
1.140 rtr 655: int s;
656:
1.139 rtr 657: KASSERT(solocked(so));
658:
659: /*
660: * Mark the connection as being incapable of further input.
661: */
1.140 rtr 662: s = splsoftnet();
1.139 rtr 663: socantsendmore(so);
1.140 rtr 664: splx(s);
665:
1.139 rtr 666: return 0;
667: }
668:
669: static int
670: rip_abort(struct socket *so)
671: {
672: KASSERT(solocked(so));
673:
674: panic("rip_abort");
675:
676: return EOPNOTSUPP;
677: }
1.137 rtr 678:
679: static int
1.127 rtr 680: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 681: {
1.127 rtr 682: return in_control(so, cmd, nam, ifp);
1.125 rtr 683: }
684:
1.128 rtr 685: static int
686: rip_stat(struct socket *so, struct stat *ub)
687: {
1.131 rtr 688: KASSERT(solocked(so));
689:
1.130 rtr 690: /* stat: don't bother with a blocksize. */
691: return 0;
1.128 rtr 692: }
693:
1.132 rtr 694: static int
1.148 rtr 695: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 696: {
1.140 rtr 697: int s;
698:
1.134 rtr 699: KASSERT(solocked(so));
1.132 rtr 700: KASSERT(sotoinpcb(so) != NULL);
701: KASSERT(nam != NULL);
702:
1.140 rtr 703: s = splsoftnet();
1.148 rtr 704: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 705: splx(s);
706:
1.132 rtr 707: return 0;
708: }
709:
710: static int
1.148 rtr 711: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 712: {
1.140 rtr 713: int s;
714:
1.134 rtr 715: KASSERT(solocked(so));
1.132 rtr 716: KASSERT(sotoinpcb(so) != NULL);
717: KASSERT(nam != NULL);
718:
1.140 rtr 719: s = splsoftnet();
1.148 rtr 720: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 721: splx(s);
722:
1.132 rtr 723: return 0;
724: }
725:
1.135 rtr 726: static int
1.144 rtr 727: rip_rcvd(struct socket *so, int flags, struct lwp *l)
728: {
729: KASSERT(solocked(so));
730:
731: return EOPNOTSUPP;
732: }
733:
734: static int
1.135 rtr 735: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
736: {
737: KASSERT(solocked(so));
738:
739: return EOPNOTSUPP;
740: }
741:
742: static int
1.152 rtr 743: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143 rtr 744: struct mbuf *control, struct lwp *l)
745: {
746: struct inpcb *inp = sotoinpcb(so);
747: int error = 0;
748: int s;
749:
750: KASSERT(solocked(so));
751: KASSERT(inp != NULL);
752: KASSERT(m != NULL);
753:
754: /*
755: * Ship a packet out. The appropriate raw output
756: * routine handles any massaging necessary.
757: */
758: if (control && control->m_len) {
759: m_freem(control);
760: m_freem(m);
761: return EINVAL;
762: }
763:
764: s = splsoftnet();
765: if (nam) {
766: if ((so->so_state & SS_ISCONNECTED) != 0) {
767: error = EISCONN;
768: goto die;
769: }
1.152 rtr 770: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.143 rtr 771: if (error) {
772: die:
773: m_freem(m);
774: splx(s);
775: return error;
776: }
777: } else {
778: if ((so->so_state & SS_ISCONNECTED) == 0) {
779: error = ENOTCONN;
780: goto die;
781: }
782: }
783: error = rip_output(m, inp);
784: if (nam)
785: rip_disconnect1(inp);
786:
787: splx(s);
788: return error;
789: }
790:
791: static int
1.135 rtr 792: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
793: {
794: KASSERT(solocked(so));
795:
796: m_freem(m);
797: m_freem(control);
798:
799: return EOPNOTSUPP;
800: }
801:
1.145 rtr 802: static int
803: rip_purgeif(struct socket *so, struct ifnet *ifp)
804: {
805: int s;
806:
807: s = splsoftnet();
808: mutex_enter(softnet_lock);
809: in_pcbpurgeif0(&rawcbtable, ifp);
1.162 ozaki-r 810: #ifdef NET_MPSAFE
811: mutex_exit(softnet_lock);
812: #endif
1.145 rtr 813: in_purgeif(ifp);
1.162 ozaki-r 814: #ifdef NET_MPSAFE
815: mutex_enter(softnet_lock);
816: #endif
1.145 rtr 817: in_pcbpurgeif(&rawcbtable, ifp);
818: mutex_exit(softnet_lock);
819: splx(s);
820:
821: return 0;
822: }
823:
1.122 rmind 824: PR_WRAP_USRREQS(rip)
825: #define rip_attach rip_attach_wrapper
826: #define rip_detach rip_detach_wrapper
1.133 rtr 827: #define rip_accept rip_accept_wrapper
1.136 rtr 828: #define rip_bind rip_bind_wrapper
829: #define rip_listen rip_listen_wrapper
1.137 rtr 830: #define rip_connect rip_connect_wrapper
1.145 rtr 831: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 832: #define rip_disconnect rip_disconnect_wrapper
833: #define rip_shutdown rip_shutdown_wrapper
834: #define rip_abort rip_abort_wrapper
1.125 rtr 835: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 836: #define rip_stat rip_stat_wrapper
1.132 rtr 837: #define rip_peeraddr rip_peeraddr_wrapper
838: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 839: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 840: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 841: #define rip_send rip_send_wrapper
1.135 rtr 842: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 843: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 844:
845: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 846: .pr_attach = rip_attach,
847: .pr_detach = rip_detach,
1.133 rtr 848: .pr_accept = rip_accept,
1.136 rtr 849: .pr_bind = rip_bind,
850: .pr_listen = rip_listen,
1.137 rtr 851: .pr_connect = rip_connect,
1.145 rtr 852: .pr_connect2 = rip_connect2,
1.139 rtr 853: .pr_disconnect = rip_disconnect,
854: .pr_shutdown = rip_shutdown,
855: .pr_abort = rip_abort,
1.125 rtr 856: .pr_ioctl = rip_ioctl,
1.128 rtr 857: .pr_stat = rip_stat,
1.132 rtr 858: .pr_peeraddr = rip_peeraddr,
859: .pr_sockaddr = rip_sockaddr,
1.144 rtr 860: .pr_rcvd = rip_rcvd,
1.135 rtr 861: .pr_recvoob = rip_recvoob,
1.143 rtr 862: .pr_send = rip_send,
1.135 rtr 863: .pr_sendoob = rip_sendoob,
1.145 rtr 864: .pr_purgeif = rip_purgeif,
1.120 rmind 865: };
866:
1.110 pooka 867: static void
868: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 869: {
870:
871: sysctl_createv(clog, 0, NULL, NULL,
872: CTLFLAG_PERMANENT,
873: CTLTYPE_NODE, "inet", NULL,
874: NULL, 0, NULL, 0,
875: CTL_NET, PF_INET, CTL_EOL);
876: sysctl_createv(clog, 0, NULL, NULL,
877: CTLFLAG_PERMANENT,
878: CTLTYPE_NODE, "raw",
879: SYSCTL_DESCR("Raw IPv4 settings"),
880: NULL, 0, NULL, 0,
881: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
882:
883: sysctl_createv(clog, 0, NULL, NULL,
884: CTLFLAG_PERMANENT,
1.86 atatat 885: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 886: SYSCTL_DESCR("Raw IPv4 control block list"),
887: sysctl_inpcblist, 0, &rawcbtable, 0,
888: CTL_NET, PF_INET, IPPROTO_RAW,
889: CTL_CREATE, CTL_EOL);
890: }
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