Annotation of src/sys/netinet/raw_ip.c, Revision 1.156
1.155 riastrad 1: /* $NetBSD: raw_ip.c,v 1.154 2016/01/20 22:02:54 riastradh 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>
1.155 riastrad 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.154 2016/01/20 22:02:54 riastradh 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>
89: #include <net/route.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 &&
216: ipsec4_in_reject_so(m, last->inp_socket)) {
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
231: && ipsec4_in_reject_so(m, last->inp_socket)) {
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,
386: inp->inp_socket);
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:
1.138 ozaki-r 482: if (IFNET_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;
558: int s;
1.151 roy 559: struct ifaddr *ia;
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();
1.138 ozaki-r 569: if (IFNET_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: }
1.151 roy 577: if ((ia = ifa_ifwithaddr(sintosa(addr))) == 0 &&
578: !in_nullhost(addr->sin_addr))
579: {
1.136 rtr 580: error = EADDRNOTAVAIL;
581: goto release;
582: }
1.151 roy 583: if (ia && ((struct in_ifaddr *)ia)->ia4_flags &
584: (IN6_IFF_NOTREADY | IN_IFF_DETACHED))
585: {
586: error = EADDRNOTAVAIL;
587: goto release;
588: }
589:
1.136 rtr 590: inp->inp_laddr = addr->sin_addr;
591:
592: release:
593: splx(s);
594: return error;
595: }
596:
597: static int
1.142 rtr 598: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 599: {
600: KASSERT(solocked(so));
601:
1.133 rtr 602: return EOPNOTSUPP;
603: }
604:
605: static int
1.152 rtr 606: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137 rtr 607: {
608: struct inpcb *inp = sotoinpcb(so);
609: int error = 0;
610: int s;
611:
612: KASSERT(solocked(so));
613: KASSERT(inp != NULL);
614: KASSERT(nam != NULL);
615:
616: s = splsoftnet();
1.152 rtr 617: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137 rtr 618: if (! error)
619: soisconnected(so);
1.140 rtr 620: splx(s);
1.137 rtr 621:
622: return error;
623: }
624:
1.139 rtr 625: static int
1.145 rtr 626: rip_connect2(struct socket *so, struct socket *so2)
627: {
628: KASSERT(solocked(so));
629:
630: return EOPNOTSUPP;
631: }
632:
633: static int
1.139 rtr 634: rip_disconnect(struct socket *so)
635: {
636: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 637: int s;
1.139 rtr 638:
639: KASSERT(solocked(so));
640: KASSERT(inp != NULL);
641:
1.140 rtr 642: s = splsoftnet();
1.139 rtr 643: soisdisconnected(so);
644: rip_disconnect1(inp);
1.140 rtr 645: splx(s);
646:
1.139 rtr 647: return 0;
648: }
649:
650: static int
651: rip_shutdown(struct socket *so)
652: {
1.140 rtr 653: int s;
654:
1.139 rtr 655: KASSERT(solocked(so));
656:
657: /*
658: * Mark the connection as being incapable of further input.
659: */
1.140 rtr 660: s = splsoftnet();
1.139 rtr 661: socantsendmore(so);
1.140 rtr 662: splx(s);
663:
1.139 rtr 664: return 0;
665: }
666:
667: static int
668: rip_abort(struct socket *so)
669: {
670: KASSERT(solocked(so));
671:
672: panic("rip_abort");
673:
674: return EOPNOTSUPP;
675: }
1.137 rtr 676:
677: static int
1.127 rtr 678: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 679: {
1.127 rtr 680: return in_control(so, cmd, nam, ifp);
1.125 rtr 681: }
682:
1.128 rtr 683: static int
684: rip_stat(struct socket *so, struct stat *ub)
685: {
1.131 rtr 686: KASSERT(solocked(so));
687:
1.130 rtr 688: /* stat: don't bother with a blocksize. */
689: return 0;
1.128 rtr 690: }
691:
1.132 rtr 692: static int
1.148 rtr 693: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 694: {
1.140 rtr 695: int s;
696:
1.134 rtr 697: KASSERT(solocked(so));
1.132 rtr 698: KASSERT(sotoinpcb(so) != NULL);
699: KASSERT(nam != NULL);
700:
1.140 rtr 701: s = splsoftnet();
1.148 rtr 702: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 703: splx(s);
704:
1.132 rtr 705: return 0;
706: }
707:
708: static int
1.148 rtr 709: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 710: {
1.140 rtr 711: int s;
712:
1.134 rtr 713: KASSERT(solocked(so));
1.132 rtr 714: KASSERT(sotoinpcb(so) != NULL);
715: KASSERT(nam != NULL);
716:
1.140 rtr 717: s = splsoftnet();
1.148 rtr 718: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 719: splx(s);
720:
1.132 rtr 721: return 0;
722: }
723:
1.135 rtr 724: static int
1.144 rtr 725: rip_rcvd(struct socket *so, int flags, struct lwp *l)
726: {
727: KASSERT(solocked(so));
728:
729: return EOPNOTSUPP;
730: }
731:
732: static int
1.135 rtr 733: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
734: {
735: KASSERT(solocked(so));
736:
737: return EOPNOTSUPP;
738: }
739:
740: static int
1.152 rtr 741: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143 rtr 742: struct mbuf *control, struct lwp *l)
743: {
744: struct inpcb *inp = sotoinpcb(so);
745: int error = 0;
746: int s;
747:
748: KASSERT(solocked(so));
749: KASSERT(inp != NULL);
750: KASSERT(m != NULL);
751:
752: /*
753: * Ship a packet out. The appropriate raw output
754: * routine handles any massaging necessary.
755: */
756: if (control && control->m_len) {
757: m_freem(control);
758: m_freem(m);
759: return EINVAL;
760: }
761:
762: s = splsoftnet();
763: if (nam) {
764: if ((so->so_state & SS_ISCONNECTED) != 0) {
765: error = EISCONN;
766: goto die;
767: }
1.152 rtr 768: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.143 rtr 769: if (error) {
770: die:
771: m_freem(m);
772: splx(s);
773: return error;
774: }
775: } else {
776: if ((so->so_state & SS_ISCONNECTED) == 0) {
777: error = ENOTCONN;
778: goto die;
779: }
780: }
781: error = rip_output(m, inp);
782: if (nam)
783: rip_disconnect1(inp);
784:
785: splx(s);
786: return error;
787: }
788:
789: static int
1.135 rtr 790: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
791: {
792: KASSERT(solocked(so));
793:
794: m_freem(m);
795: m_freem(control);
796:
797: return EOPNOTSUPP;
798: }
799:
1.145 rtr 800: static int
801: rip_purgeif(struct socket *so, struct ifnet *ifp)
802: {
803: int s;
804:
805: s = splsoftnet();
806: mutex_enter(softnet_lock);
807: in_pcbpurgeif0(&rawcbtable, ifp);
808: in_purgeif(ifp);
809: in_pcbpurgeif(&rawcbtable, ifp);
810: mutex_exit(softnet_lock);
811: splx(s);
812:
813: return 0;
814: }
815:
1.122 rmind 816: PR_WRAP_USRREQS(rip)
817: #define rip_attach rip_attach_wrapper
818: #define rip_detach rip_detach_wrapper
1.133 rtr 819: #define rip_accept rip_accept_wrapper
1.136 rtr 820: #define rip_bind rip_bind_wrapper
821: #define rip_listen rip_listen_wrapper
1.137 rtr 822: #define rip_connect rip_connect_wrapper
1.145 rtr 823: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 824: #define rip_disconnect rip_disconnect_wrapper
825: #define rip_shutdown rip_shutdown_wrapper
826: #define rip_abort rip_abort_wrapper
1.125 rtr 827: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 828: #define rip_stat rip_stat_wrapper
1.132 rtr 829: #define rip_peeraddr rip_peeraddr_wrapper
830: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 831: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 832: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 833: #define rip_send rip_send_wrapper
1.135 rtr 834: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 835: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 836:
837: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 838: .pr_attach = rip_attach,
839: .pr_detach = rip_detach,
1.133 rtr 840: .pr_accept = rip_accept,
1.136 rtr 841: .pr_bind = rip_bind,
842: .pr_listen = rip_listen,
1.137 rtr 843: .pr_connect = rip_connect,
1.145 rtr 844: .pr_connect2 = rip_connect2,
1.139 rtr 845: .pr_disconnect = rip_disconnect,
846: .pr_shutdown = rip_shutdown,
847: .pr_abort = rip_abort,
1.125 rtr 848: .pr_ioctl = rip_ioctl,
1.128 rtr 849: .pr_stat = rip_stat,
1.132 rtr 850: .pr_peeraddr = rip_peeraddr,
851: .pr_sockaddr = rip_sockaddr,
1.144 rtr 852: .pr_rcvd = rip_rcvd,
1.135 rtr 853: .pr_recvoob = rip_recvoob,
1.143 rtr 854: .pr_send = rip_send,
1.135 rtr 855: .pr_sendoob = rip_sendoob,
1.145 rtr 856: .pr_purgeif = rip_purgeif,
1.120 rmind 857: };
858:
1.110 pooka 859: static void
860: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 861: {
862:
863: sysctl_createv(clog, 0, NULL, NULL,
864: CTLFLAG_PERMANENT,
865: CTLTYPE_NODE, "inet", NULL,
866: NULL, 0, NULL, 0,
867: CTL_NET, PF_INET, CTL_EOL);
868: sysctl_createv(clog, 0, NULL, NULL,
869: CTLFLAG_PERMANENT,
870: CTLTYPE_NODE, "raw",
871: SYSCTL_DESCR("Raw IPv4 settings"),
872: NULL, 0, NULL, 0,
873: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
874:
875: sysctl_createv(clog, 0, NULL, NULL,
876: CTLFLAG_PERMANENT,
1.86 atatat 877: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 878: SYSCTL_DESCR("Raw IPv4 control block list"),
879: sysctl_inpcblist, 0, &rawcbtable, 0,
880: CTL_NET, PF_INET, IPPROTO_RAW,
881: CTL_CREATE, CTL_EOL);
882: }
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