Annotation of src/sys/netinet/raw_ip.c, Revision 1.107.2.2
1.107.2.2! yamt 1: /* $NetBSD: raw_ip.c,v 1.107.2.1 2009/05/04 08:14:17 yamt 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:
63: #include <sys/cdefs.h>
1.107.2.2! yamt 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.107.2.1 2009/05/04 08:14:17 yamt Exp $");
1.40 scottr 65:
1.78 jonathan 66: #include "opt_inet.h"
1.107.2.1 yamt 67: #include "opt_compat_netbsd.h"
1.45 thorpej 68: #include "opt_ipsec.h"
1.40 scottr 69: #include "opt_mrouting.h"
1.1 cgd 70:
1.7 mycroft 71: #include <sys/param.h>
1.84 atatat 72: #include <sys/sysctl.h>
1.7 mycroft 73: #include <sys/malloc.h>
74: #include <sys/mbuf.h>
75: #include <sys/socket.h>
76: #include <sys/protosw.h>
77: #include <sys/socketvar.h>
78: #include <sys/errno.h>
1.13 mycroft 79: #include <sys/systm.h>
1.26 mycroft 80: #include <sys/proc.h>
1.89 elad 81: #include <sys/kauth.h>
1.1 cgd 82:
1.7 mycroft 83: #include <net/if.h>
84: #include <net/route.h>
1.1 cgd 85:
1.7 mycroft 86: #include <netinet/in.h>
87: #include <netinet/in_systm.h>
88: #include <netinet/ip.h>
89: #include <netinet/ip_var.h>
1.105 thorpej 90: #include <netinet/ip_private.h>
1.13 mycroft 91: #include <netinet/ip_mroute.h>
1.44 darrenr 92: #include <netinet/ip_icmp.h>
1.7 mycroft 93: #include <netinet/in_pcb.h>
1.87 yamt 94: #include <netinet/in_proto.h>
1.24 christos 95: #include <netinet/in_var.h>
96:
97: #include <machine/stdarg.h>
1.13 mycroft 98:
1.43 itojun 99: #ifdef IPSEC
100: #include <netinet6/ipsec.h>
1.106 thorpej 101: #include <netinet6/ipsec_private.h>
102: #endif /* IPSEC */
1.43 itojun 103:
1.72 jonathan 104: #ifdef FAST_IPSEC
105: #include <netipsec/ipsec.h>
1.106 thorpej 106: #include <netipsec/ipsec_var.h>
107: #include <netipsec/ipsec_private.h>
108: #endif /* FAST_IPSEC */
1.72 jonathan 109:
1.107.2.1 yamt 110: #ifdef COMPAT_50
111: #include <compat/sys/socket.h>
112: #endif
113:
1.20 mycroft 114: struct inpcbtable rawcbtable;
1.30 pk 115:
1.82 perry 116: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
117: struct in_addr, int, int, void (*)(struct inpcb *, int));
118: int rip_bind(struct inpcb *, struct mbuf *);
119: int rip_connect(struct inpcb *, struct mbuf *);
120: void rip_disconnect(struct inpcb *);
1.13 mycroft 121:
1.107.2.2! yamt 122: static void sysctl_net_inet_raw_setup(struct sysctllog **);
! 123:
1.13 mycroft 124: /*
125: * Nominal space allocated to a raw ip socket.
126: */
127: #define RIPSNDQ 8192
128: #define RIPRCVQ 8192
1.1 cgd 129:
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:
1.107.2.2! yamt 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);
1.107.2.1 yamt 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:
1.75 itojun 199: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
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: ;
1.72 jonathan 213: #if defined(IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 214: /* check AH/ESP integrity. */
215: else if (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: }
1.72 jonathan 227: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 228: /* check AH/ESP integrity. */
1.97 dyoung 229: if (last != NULL && 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: {
257: struct inpcb *inp, *ninp;
258: int nmatch;
259:
260: nmatch = 0;
1.75 itojun 261: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 262: inp != (struct inpcb *)&table->inpt_queue;
263: inp = ninp) {
1.75 itojun 264: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
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
1.24 christos 314: rip_output(struct mbuf *m, ...)
315: {
1.53 augustss 316: struct inpcb *inp;
317: struct ip *ip;
1.10 mycroft 318: struct mbuf *opts;
1.24 christos 319: int flags;
320: va_list ap;
321:
322: va_start(ap, m);
1.27 mycroft 323: inp = va_arg(ap, struct inpcb *);
1.24 christos 324: va_end(ap);
325:
1.27 mycroft 326: flags =
1.37 matt 327: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
328: | IP_RETURNMTU;
1.1 cgd 329:
330: /*
331: * If the user handed us a complete IP packet, use it.
332: * Otherwise, allocate an mbuf for a header and fill it in.
333: */
1.13 mycroft 334: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 335: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
336: m_freem(m);
337: return (EMSGSIZE);
338: }
1.68 itojun 339: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
340: if (!m)
341: return (ENOBUFS);
1.1 cgd 342: ip = mtod(m, struct ip *);
343: ip->ip_tos = 0;
1.62 itojun 344: ip->ip_off = htons(0);
1.13 mycroft 345: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 346: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 347: ip->ip_src = inp->inp_laddr;
1.27 mycroft 348: ip->ip_dst = inp->inp_faddr;
1.1 cgd 349: ip->ip_ttl = MAXTTL;
1.13 mycroft 350: opts = inp->inp_options;
351: } else {
1.35 thorpej 352: if (m->m_pkthdr.len > IP_MAXPACKET) {
353: m_freem(m);
354: return (EMSGSIZE);
355: }
1.13 mycroft 356: ip = mtod(m, struct ip *);
1.65 thorpej 357:
358: /*
359: * If the mbuf is read-only, we need to allocate
360: * a new mbuf for the header, since we need to
361: * modify the header.
362: */
363: if (M_READONLY(m)) {
364: int hlen = ip->ip_hl << 2;
365:
366: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
367: if (m == NULL)
368: return (ENOMEM); /* XXX */
369: ip = mtod(m, struct ip *);
370: }
371:
1.62 itojun 372: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 373: if (m->m_pkthdr.len != ip->ip_len) {
374: m_freem(m);
375: return (EINVAL);
376: }
1.62 itojun 377: HTONS(ip->ip_len);
378: HTONS(ip->ip_off);
1.103 matt 379: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
380: flags |= IP_NOIPNEWID;
1.13 mycroft 381: opts = NULL;
382: /* XXX prevent ip_output from overwriting header fields */
383: flags |= IP_RAWOUTPUT;
1.105 thorpej 384: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 385: }
1.62 itojun 386: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 387: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 388: }
389:
390: /*
391: * Raw IP socket option processing.
392: */
1.9 mycroft 393: int
1.107.2.1 yamt 394: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 395: {
1.53 augustss 396: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 397: int error = 0;
1.107.2.1 yamt 398: int optval;
1.1 cgd 399:
1.107.2.1 yamt 400: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 401: if (op == PRCO_GETOPT) {
1.107.2.1 yamt 402: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
403: error = sockopt_set(sopt, &optval, sizeof(optval));
404: } else if (op == PRCO_SETOPT) {
405: error = sockopt_getint(sopt, &optval);
406: if (error)
407: goto out;
408: if (optval) {
409: inp->inp_flags &= ~INP_HDRINCL;
410: inp->inp_flags |= INP_NOHEADER;
411: } else
412: inp->inp_flags &= ~INP_NOHEADER;
413: }
414: goto out;
415: } else if (sopt->sopt_level != IPPROTO_IP)
416: return ip_ctloutput(op, so, sopt);
1.100 dyoung 417:
418: switch (op) {
1.31 mycroft 419:
420: case PRCO_SETOPT:
1.107.2.1 yamt 421: switch (sopt->sopt_name) {
1.31 mycroft 422: case IP_HDRINCL:
1.107.2.1 yamt 423: error = sockopt_getint(sopt, &optval);
424: if (error)
425: break;
426: if (optval)
1.100 dyoung 427: inp->inp_flags |= INP_HDRINCL;
428: else
429: inp->inp_flags &= ~INP_HDRINCL;
1.107.2.1 yamt 430: break;
1.31 mycroft 431:
432: #ifdef MROUTING
433: case MRT_INIT:
434: case MRT_DONE:
435: case MRT_ADD_VIF:
436: case MRT_DEL_VIF:
437: case MRT_ADD_MFC:
438: case MRT_DEL_MFC:
439: case MRT_ASSERT:
1.81 manu 440: case MRT_API_CONFIG:
441: case MRT_ADD_BW_UPCALL:
442: case MRT_DEL_BW_UPCALL:
1.107.2.1 yamt 443: error = ip_mrouter_set(so, sopt);
1.31 mycroft 444: break;
445: #endif
446:
447: default:
1.107.2.1 yamt 448: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 449: break;
1.13 mycroft 450: }
451: break;
1.1 cgd 452:
1.31 mycroft 453: case PRCO_GETOPT:
1.107.2.1 yamt 454: switch (sopt->sopt_name) {
1.31 mycroft 455: case IP_HDRINCL:
1.107.2.1 yamt 456: optval = inp->inp_flags & INP_HDRINCL;
457: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 458: break;
459:
1.6 hpeyerl 460: #ifdef MROUTING
1.31 mycroft 461: case MRT_VERSION:
462: case MRT_ASSERT:
1.81 manu 463: case MRT_API_SUPPORT:
464: case MRT_API_CONFIG:
1.107.2.1 yamt 465: error = ip_mrouter_get(so, sopt);
1.18 mycroft 466: break;
1.31 mycroft 467: #endif
468:
1.18 mycroft 469: default:
1.107.2.1 yamt 470: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 471: break;
472: }
1.31 mycroft 473: break;
1.1 cgd 474: }
1.107.2.1 yamt 475: out:
1.100 dyoung 476: return error;
1.1 cgd 477: }
478:
1.27 mycroft 479: int
1.83 perry 480: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 481: {
482: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
483:
484: if (nam->m_len != sizeof(*addr))
485: return (EINVAL);
1.58 matt 486: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 487: return (EADDRNOTAVAIL);
488: if (addr->sin_family != AF_INET &&
489: addr->sin_family != AF_IMPLINK)
490: return (EAFNOSUPPORT);
1.32 mycroft 491: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 492: ifa_ifwithaddr(sintosa(addr)) == 0)
493: return (EADDRNOTAVAIL);
494: inp->inp_laddr = addr->sin_addr;
495: return (0);
496: }
497:
498: int
1.83 perry 499: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 500: {
501: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
502:
503: if (nam->m_len != sizeof(*addr))
504: return (EINVAL);
1.58 matt 505: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 506: return (EADDRNOTAVAIL);
507: if (addr->sin_family != AF_INET &&
508: addr->sin_family != AF_IMPLINK)
509: return (EAFNOSUPPORT);
510: inp->inp_faddr = addr->sin_addr;
511: return (0);
512: }
513:
514: void
1.83 perry 515: rip_disconnect(struct inpcb *inp)
1.27 mycroft 516: {
517:
1.32 mycroft 518: inp->inp_faddr = zeroin_addr;
1.27 mycroft 519: }
520:
1.13 mycroft 521: u_long rip_sendspace = RIPSNDQ;
522: u_long rip_recvspace = RIPRCVQ;
523:
1.1 cgd 524: /*ARGSUSED*/
1.9 mycroft 525: int
1.83 perry 526: rip_usrreq(struct socket *so, int req,
1.88 christos 527: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 528: {
1.53 augustss 529: struct inpcb *inp;
1.27 mycroft 530: int s;
1.53 augustss 531: int error = 0;
1.13 mycroft 532: #ifdef MROUTING
1.6 hpeyerl 533: extern struct socket *ip_mrouter;
534: #endif
1.27 mycroft 535:
1.22 pk 536: if (req == PRU_CONTROL)
1.107.2.2! yamt 537: return in_control(so, (long)m, nam, (struct ifnet *)control, l);
1.49 thorpej 538:
1.93 tls 539: s = splsoftnet();
540:
1.50 thorpej 541: if (req == PRU_PURGEIF) {
1.107 ad 542: mutex_enter(softnet_lock);
1.56 itojun 543: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 544: in_purgeif((struct ifnet *)control);
545: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.107 ad 546: mutex_exit(softnet_lock);
1.93 tls 547: splx(s);
1.49 thorpej 548: return (0);
549: }
1.22 pk 550:
1.27 mycroft 551: inp = sotoinpcb(so);
1.28 mycroft 552: #ifdef DIAGNOSTIC
553: if (req != PRU_SEND && req != PRU_SENDOOB && control)
554: panic("rip_usrreq: unexpected control mbuf");
555: #endif
1.107.2.2! yamt 556: if (inp == NULL && req != PRU_ATTACH) {
1.22 pk 557: error = EINVAL;
558: goto release;
559: }
560:
1.1 cgd 561: switch (req) {
562:
563: case PRU_ATTACH:
1.107 ad 564: sosetlock(so);
1.27 mycroft 565: if (inp != 0) {
566: error = EISCONN;
567: break;
568: }
1.94 elad 569:
570: if (l == NULL) {
1.13 mycroft 571: error = EACCES;
572: break;
573: }
1.94 elad 574:
575: /* XXX: raw socket permissions are checked in socreate() */
576:
1.27 mycroft 577: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
578: error = soreserve(so, rip_sendspace, rip_recvspace);
579: if (error)
580: break;
581: }
582: error = in_pcballoc(so, &rawcbtable);
583: if (error)
1.13 mycroft 584: break;
1.27 mycroft 585: inp = sotoinpcb(so);
1.17 cgd 586: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 587: break;
588:
589: case PRU_DETACH:
1.13 mycroft 590: #ifdef MROUTING
1.6 hpeyerl 591: if (so == ip_mrouter)
592: ip_mrouter_done();
593: #endif
1.13 mycroft 594: in_pcbdetach(inp);
1.1 cgd 595: break;
596:
597: case PRU_BIND:
1.29 mycroft 598: error = rip_bind(inp, nam);
1.27 mycroft 599: break;
600:
601: case PRU_LISTEN:
602: error = EOPNOTSUPP;
603: break;
604:
605: case PRU_CONNECT:
606: error = rip_connect(inp, nam);
607: if (error)
1.13 mycroft 608: break;
1.1 cgd 609: soisconnected(so);
1.13 mycroft 610: break;
611:
612: case PRU_CONNECT2:
613: error = EOPNOTSUPP;
614: break;
615:
1.27 mycroft 616: case PRU_DISCONNECT:
617: soisdisconnected(so);
618: rip_disconnect(inp);
619: break;
620:
1.13 mycroft 621: /*
622: * Mark the connection as being incapable of further input.
623: */
624: case PRU_SHUTDOWN:
625: socantsendmore(so);
626: break;
627:
1.27 mycroft 628: case PRU_RCVD:
629: error = EOPNOTSUPP;
630: break;
631:
1.13 mycroft 632: /*
633: * Ship a packet out. The appropriate raw output
634: * routine handles any massaging necessary.
635: */
636: case PRU_SEND:
1.28 mycroft 637: if (control && control->m_len) {
638: m_freem(control);
639: m_freem(m);
640: error = EINVAL;
641: break;
642: }
643: {
1.27 mycroft 644: if (nam) {
645: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 646: error = EISCONN;
1.28 mycroft 647: goto die;
1.13 mycroft 648: }
1.27 mycroft 649: error = rip_connect(inp, nam);
650: if (error) {
1.28 mycroft 651: die:
1.27 mycroft 652: m_freem(m);
653: break;
654: }
1.13 mycroft 655: } else {
1.27 mycroft 656: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 657: error = ENOTCONN;
1.28 mycroft 658: goto die;
1.13 mycroft 659: }
660: }
1.27 mycroft 661: error = rip_output(m, inp);
662: if (nam)
663: rip_disconnect(inp);
1.28 mycroft 664: }
1.13 mycroft 665: break;
666:
667: case PRU_SENSE:
668: /*
669: * stat: don't bother with a blocksize.
670: */
1.27 mycroft 671: splx(s);
1.1 cgd 672: return (0);
1.13 mycroft 673:
674: case PRU_RCVOOB:
1.27 mycroft 675: error = EOPNOTSUPP;
676: break;
677:
1.13 mycroft 678: case PRU_SENDOOB:
1.28 mycroft 679: m_freem(control);
1.27 mycroft 680: m_freem(m);
1.13 mycroft 681: error = EOPNOTSUPP;
682: break;
683:
684: case PRU_SOCKADDR:
685: in_setsockaddr(inp, nam);
686: break;
687:
688: case PRU_PEERADDR:
689: in_setpeeraddr(inp, nam);
690: break;
691:
692: default:
693: panic("rip_usrreq");
1.1 cgd 694: }
1.27 mycroft 695:
1.22 pk 696: release:
1.27 mycroft 697: splx(s);
1.1 cgd 698: return (error);
699: }
1.84 atatat 700:
1.107.2.2! yamt 701: static void
! 702: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 703: {
704:
705: sysctl_createv(clog, 0, NULL, NULL,
706: CTLFLAG_PERMANENT,
707: CTLTYPE_NODE, "net", NULL,
708: NULL, 0, NULL, 0,
709: CTL_NET, CTL_EOL);
710: sysctl_createv(clog, 0, NULL, NULL,
711: CTLFLAG_PERMANENT,
712: CTLTYPE_NODE, "inet", NULL,
713: NULL, 0, NULL, 0,
714: CTL_NET, PF_INET, CTL_EOL);
715: sysctl_createv(clog, 0, NULL, NULL,
716: CTLFLAG_PERMANENT,
717: CTLTYPE_NODE, "raw",
718: SYSCTL_DESCR("Raw IPv4 settings"),
719: NULL, 0, NULL, 0,
720: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
721:
722: sysctl_createv(clog, 0, NULL, NULL,
723: CTLFLAG_PERMANENT,
1.86 atatat 724: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 725: SYSCTL_DESCR("Raw IPv4 control block list"),
726: sysctl_inpcblist, 0, &rawcbtable, 0,
727: CTL_NET, PF_INET, IPPROTO_RAW,
728: CTL_CREATE, CTL_EOL);
729: }
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