Annotation of src/sys/netinet/raw_ip.c, Revision 1.109
1.109 ! christos 1: /* $NetBSD: raw_ip.c,v 1.108 2008/08/06 15:01:23 plunky 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>
1.109 ! christos 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.108 2008/08/06 15:01:23 plunky Exp $");
1.40 scottr 65:
1.78 jonathan 66: #include "opt_inet.h"
1.109 ! christos 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:
1.109 ! christos 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:
122: /*
123: * Nominal space allocated to a raw ip socket.
124: */
125: #define RIPSNDQ 8192
126: #define RIPRCVQ 8192
1.1 cgd 127:
128: /*
129: * Raw interface to IP protocol.
130: */
1.13 mycroft 131:
132: /*
133: * Initialize raw connection block q.
134: */
135: void
1.83 perry 136: rip_init(void)
1.13 mycroft 137: {
138:
1.33 mycroft 139: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 140: }
141:
1.100 dyoung 142: static void
143: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
144: int hlen, struct mbuf *opts, struct mbuf *n)
145: {
146: if (last->inp_flags & INP_NOHEADER)
147: m_adj(n, hlen);
1.109 ! christos 148: if (last->inp_flags & INP_CONTROLOPTS
! 149: #ifdef SO_OTIMESTAMP
! 150: || last->inp_socket->so_options & SO_OTIMESTAMP
! 151: #endif
! 152: || last->inp_socket->so_options & SO_TIMESTAMP)
1.100 dyoung 153: ip_savecontrol(last, &opts, ip, n);
154: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
155: /* should notify about lost packet */
156: m_freem(n);
157: if (opts)
158: m_freem(opts);
159: } else
160: sorwakeup(last->inp_socket);
161: }
162:
1.1 cgd 163: /*
164: * Setup generic address and protocol structures
165: * for raw_input routine, then pass them along with
166: * mbuf chain.
167: */
1.9 mycroft 168: void
1.24 christos 169: rip_input(struct mbuf *m, ...)
1.1 cgd 170: {
1.100 dyoung 171: int hlen, proto;
1.53 augustss 172: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 173: struct inpcb_hdr *inph;
1.53 augustss 174: struct inpcb *inp;
1.97 dyoung 175: struct inpcb *last = NULL;
176: struct mbuf *n, *opts = NULL;
1.32 mycroft 177: struct sockaddr_in ripsrc;
1.43 itojun 178: va_list ap;
179:
180: va_start(ap, m);
1.64 simonb 181: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 182: proto = va_arg(ap, int);
183: va_end(ap);
1.1 cgd 184:
1.97 dyoung 185: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 186:
187: /*
188: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 189: * XXX to have the header length subtracted, and in host order.
190: * XXX ip_off is also expected to be host order.
1.42 thorpej 191: */
1.100 dyoung 192: hlen = ip->ip_hl << 2;
193: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 194: NTOHS(ip->ip_off);
1.32 mycroft 195:
1.75 itojun 196: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
197: inp = (struct inpcb *)inph;
198: if (inp->inp_af != AF_INET)
199: continue;
1.43 itojun 200: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 201: continue;
1.32 mycroft 202: if (!in_nullhost(inp->inp_laddr) &&
203: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 204: continue;
1.32 mycroft 205: if (!in_nullhost(inp->inp_faddr) &&
206: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 207: continue;
1.97 dyoung 208: if (last == NULL)
209: ;
1.72 jonathan 210: #if defined(IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 211: /* check AH/ESP integrity. */
212: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
1.106 thorpej 213: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 214: /* do not inject data to pcb */
215: }
216: #endif /*IPSEC*/
1.99 dyoung 217: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 218: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
219: n);
1.97 dyoung 220: opts = NULL;
1.13 mycroft 221: }
1.36 thorpej 222: last = inp;
1.13 mycroft 223: }
1.72 jonathan 224: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 225: /* check AH/ESP integrity. */
1.97 dyoung 226: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 227: m_freem(m);
1.106 thorpej 228: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 229: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 230: /* do not inject data to pcb */
231: } else
232: #endif /*IPSEC*/
1.100 dyoung 233: if (last != NULL)
234: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
235: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 236: uint64_t *ips;
237:
1.97 dyoung 238: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
239: 0, 0);
1.105 thorpej 240: ips = IP_STAT_GETREF();
241: ips[IP_STAT_NOPROTO]++;
242: ips[IP_STAT_DELIVERED]--;
243: IP_STAT_PUTREF();
1.97 dyoung 244: } else
245: m_freem(m);
1.43 itojun 246: return;
1.60 itojun 247: }
248:
249: int
1.83 perry 250: rip_pcbnotify(struct inpcbtable *table,
251: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
252: void (*notify)(struct inpcb *, int))
1.60 itojun 253: {
254: struct inpcb *inp, *ninp;
255: int nmatch;
256:
257: nmatch = 0;
1.75 itojun 258: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 259: inp != (struct inpcb *)&table->inpt_queue;
260: inp = ninp) {
1.75 itojun 261: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
262: if (inp->inp_af != AF_INET)
263: continue;
1.60 itojun 264: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
265: continue;
266: if (in_hosteq(inp->inp_faddr, faddr) &&
267: in_hosteq(inp->inp_laddr, laddr)) {
268: (*notify)(inp, errno);
269: nmatch++;
270: }
271: }
272:
273: return nmatch;
274: }
275:
276: void *
1.95 dyoung 277: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 278: {
279: struct ip *ip = v;
1.82 perry 280: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 281: int errno;
282:
283: if (sa->sa_family != AF_INET ||
284: sa->sa_len != sizeof(struct sockaddr_in))
285: return NULL;
286: if ((unsigned)cmd >= PRC_NCMDS)
287: return NULL;
288: errno = inetctlerrmap[cmd];
289: if (PRC_IS_REDIRECT(cmd))
290: notify = in_rtchange, ip = 0;
291: else if (cmd == PRC_HOSTDEAD)
292: ip = 0;
293: else if (errno == 0)
294: return NULL;
295: if (ip) {
1.95 dyoung 296: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 297: ip->ip_src, ip->ip_p, errno, notify);
298:
299: /* XXX mapped address case */
300: } else
1.95 dyoung 301: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 302: notify);
303: return NULL;
1.1 cgd 304: }
305:
306: /*
307: * Generate IP header and pass packet to ip_output.
308: * Tack on options user may have setup with control call.
309: */
1.9 mycroft 310: int
1.24 christos 311: rip_output(struct mbuf *m, ...)
312: {
1.53 augustss 313: struct inpcb *inp;
314: struct ip *ip;
1.10 mycroft 315: struct mbuf *opts;
1.24 christos 316: int flags;
317: va_list ap;
318:
319: va_start(ap, m);
1.27 mycroft 320: inp = va_arg(ap, struct inpcb *);
1.24 christos 321: va_end(ap);
322:
1.27 mycroft 323: flags =
1.37 matt 324: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
325: | IP_RETURNMTU;
1.1 cgd 326:
327: /*
328: * If the user handed us a complete IP packet, use it.
329: * Otherwise, allocate an mbuf for a header and fill it in.
330: */
1.13 mycroft 331: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 332: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
333: m_freem(m);
334: return (EMSGSIZE);
335: }
1.68 itojun 336: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
337: if (!m)
338: return (ENOBUFS);
1.1 cgd 339: ip = mtod(m, struct ip *);
340: ip->ip_tos = 0;
1.62 itojun 341: ip->ip_off = htons(0);
1.13 mycroft 342: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 343: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 344: ip->ip_src = inp->inp_laddr;
1.27 mycroft 345: ip->ip_dst = inp->inp_faddr;
1.1 cgd 346: ip->ip_ttl = MAXTTL;
1.13 mycroft 347: opts = inp->inp_options;
348: } else {
1.35 thorpej 349: if (m->m_pkthdr.len > IP_MAXPACKET) {
350: m_freem(m);
351: return (EMSGSIZE);
352: }
1.13 mycroft 353: ip = mtod(m, struct ip *);
1.65 thorpej 354:
355: /*
356: * If the mbuf is read-only, we need to allocate
357: * a new mbuf for the header, since we need to
358: * modify the header.
359: */
360: if (M_READONLY(m)) {
361: int hlen = ip->ip_hl << 2;
362:
363: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
364: if (m == NULL)
365: return (ENOMEM); /* XXX */
366: ip = mtod(m, struct ip *);
367: }
368:
1.62 itojun 369: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 370: if (m->m_pkthdr.len != ip->ip_len) {
371: m_freem(m);
372: return (EINVAL);
373: }
1.62 itojun 374: HTONS(ip->ip_len);
375: HTONS(ip->ip_off);
1.103 matt 376: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
377: flags |= IP_NOIPNEWID;
1.13 mycroft 378: opts = NULL;
379: /* XXX prevent ip_output from overwriting header fields */
380: flags |= IP_RAWOUTPUT;
1.105 thorpej 381: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 382: }
1.62 itojun 383: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 384: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 385: }
386:
387: /*
388: * Raw IP socket option processing.
389: */
1.9 mycroft 390: int
1.108 plunky 391: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 392: {
1.53 augustss 393: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 394: int error = 0;
1.108 plunky 395: int optval;
1.1 cgd 396:
1.108 plunky 397: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 398: if (op == PRCO_GETOPT) {
1.108 plunky 399: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
400: error = sockopt_set(sopt, &optval, sizeof(optval));
401: } else if (op == PRCO_SETOPT) {
402: error = sockopt_getint(sopt, &optval);
403: if (error)
404: goto out;
405: if (optval) {
406: inp->inp_flags &= ~INP_HDRINCL;
407: inp->inp_flags |= INP_NOHEADER;
408: } else
409: inp->inp_flags &= ~INP_NOHEADER;
410: }
411: goto out;
412: } else if (sopt->sopt_level != IPPROTO_IP)
413: return ip_ctloutput(op, so, sopt);
1.100 dyoung 414:
415: switch (op) {
1.31 mycroft 416:
417: case PRCO_SETOPT:
1.108 plunky 418: switch (sopt->sopt_name) {
1.31 mycroft 419: case IP_HDRINCL:
1.108 plunky 420: error = sockopt_getint(sopt, &optval);
421: if (error)
422: break;
423: if (optval)
1.100 dyoung 424: inp->inp_flags |= INP_HDRINCL;
425: else
426: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 427: break;
1.31 mycroft 428:
429: #ifdef MROUTING
430: case MRT_INIT:
431: case MRT_DONE:
432: case MRT_ADD_VIF:
433: case MRT_DEL_VIF:
434: case MRT_ADD_MFC:
435: case MRT_DEL_MFC:
436: case MRT_ASSERT:
1.81 manu 437: case MRT_API_CONFIG:
438: case MRT_ADD_BW_UPCALL:
439: case MRT_DEL_BW_UPCALL:
1.108 plunky 440: error = ip_mrouter_set(so, sopt);
1.31 mycroft 441: break;
442: #endif
443:
444: default:
1.108 plunky 445: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 446: break;
1.13 mycroft 447: }
448: break;
1.1 cgd 449:
1.31 mycroft 450: case PRCO_GETOPT:
1.108 plunky 451: switch (sopt->sopt_name) {
1.31 mycroft 452: case IP_HDRINCL:
1.108 plunky 453: optval = inp->inp_flags & INP_HDRINCL;
454: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 455: break;
456:
1.6 hpeyerl 457: #ifdef MROUTING
1.31 mycroft 458: case MRT_VERSION:
459: case MRT_ASSERT:
1.81 manu 460: case MRT_API_SUPPORT:
461: case MRT_API_CONFIG:
1.108 plunky 462: error = ip_mrouter_get(so, sopt);
1.18 mycroft 463: break;
1.31 mycroft 464: #endif
465:
1.18 mycroft 466: default:
1.108 plunky 467: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 468: break;
469: }
1.31 mycroft 470: break;
1.1 cgd 471: }
1.108 plunky 472: out:
1.100 dyoung 473: return error;
1.1 cgd 474: }
475:
1.27 mycroft 476: int
1.83 perry 477: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 478: {
479: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
480:
481: if (nam->m_len != sizeof(*addr))
482: return (EINVAL);
1.58 matt 483: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 484: return (EADDRNOTAVAIL);
485: if (addr->sin_family != AF_INET &&
486: addr->sin_family != AF_IMPLINK)
487: return (EAFNOSUPPORT);
1.32 mycroft 488: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 489: ifa_ifwithaddr(sintosa(addr)) == 0)
490: return (EADDRNOTAVAIL);
491: inp->inp_laddr = addr->sin_addr;
492: return (0);
493: }
494:
495: int
1.83 perry 496: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 497: {
498: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
499:
500: if (nam->m_len != sizeof(*addr))
501: return (EINVAL);
1.58 matt 502: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 503: return (EADDRNOTAVAIL);
504: if (addr->sin_family != AF_INET &&
505: addr->sin_family != AF_IMPLINK)
506: return (EAFNOSUPPORT);
507: inp->inp_faddr = addr->sin_addr;
508: return (0);
509: }
510:
511: void
1.83 perry 512: rip_disconnect(struct inpcb *inp)
1.27 mycroft 513: {
514:
1.32 mycroft 515: inp->inp_faddr = zeroin_addr;
1.27 mycroft 516: }
517:
1.13 mycroft 518: u_long rip_sendspace = RIPSNDQ;
519: u_long rip_recvspace = RIPRCVQ;
520:
1.1 cgd 521: /*ARGSUSED*/
1.9 mycroft 522: int
1.83 perry 523: rip_usrreq(struct socket *so, int req,
1.88 christos 524: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 525: {
1.53 augustss 526: struct inpcb *inp;
1.27 mycroft 527: int s;
1.53 augustss 528: int error = 0;
1.13 mycroft 529: #ifdef MROUTING
1.6 hpeyerl 530: extern struct socket *ip_mrouter;
531: #endif
1.27 mycroft 532:
1.22 pk 533: if (req == PRU_CONTROL)
1.96 christos 534: return (in_control(so, (long)m, (void *)nam,
1.90 ad 535: (struct ifnet *)control, l));
1.49 thorpej 536:
1.93 tls 537: s = splsoftnet();
538:
1.50 thorpej 539: if (req == PRU_PURGEIF) {
1.107 ad 540: mutex_enter(softnet_lock);
1.56 itojun 541: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 542: in_purgeif((struct ifnet *)control);
543: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.107 ad 544: mutex_exit(softnet_lock);
1.93 tls 545: splx(s);
1.49 thorpej 546: return (0);
547: }
1.22 pk 548:
1.27 mycroft 549: inp = sotoinpcb(so);
1.28 mycroft 550: #ifdef DIAGNOSTIC
551: if (req != PRU_SEND && req != PRU_SENDOOB && control)
552: panic("rip_usrreq: unexpected control mbuf");
553: #endif
1.27 mycroft 554: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 555: error = EINVAL;
556: goto release;
557: }
558:
1.1 cgd 559: switch (req) {
560:
561: case PRU_ATTACH:
1.107 ad 562: sosetlock(so);
1.27 mycroft 563: if (inp != 0) {
564: error = EISCONN;
565: break;
566: }
1.94 elad 567:
568: if (l == NULL) {
1.13 mycroft 569: error = EACCES;
570: break;
571: }
1.94 elad 572:
573: /* XXX: raw socket permissions are checked in socreate() */
574:
1.27 mycroft 575: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
576: error = soreserve(so, rip_sendspace, rip_recvspace);
577: if (error)
578: break;
579: }
580: error = in_pcballoc(so, &rawcbtable);
581: if (error)
1.13 mycroft 582: break;
1.27 mycroft 583: inp = sotoinpcb(so);
1.17 cgd 584: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 585: break;
586:
587: case PRU_DETACH:
1.13 mycroft 588: #ifdef MROUTING
1.6 hpeyerl 589: if (so == ip_mrouter)
590: ip_mrouter_done();
591: #endif
1.13 mycroft 592: in_pcbdetach(inp);
1.1 cgd 593: break;
594:
595: case PRU_BIND:
1.29 mycroft 596: error = rip_bind(inp, nam);
1.27 mycroft 597: break;
598:
599: case PRU_LISTEN:
600: error = EOPNOTSUPP;
601: break;
602:
603: case PRU_CONNECT:
604: error = rip_connect(inp, nam);
605: if (error)
1.13 mycroft 606: break;
1.1 cgd 607: soisconnected(so);
1.13 mycroft 608: break;
609:
610: case PRU_CONNECT2:
611: error = EOPNOTSUPP;
612: break;
613:
1.27 mycroft 614: case PRU_DISCONNECT:
615: soisdisconnected(so);
616: rip_disconnect(inp);
617: break;
618:
1.13 mycroft 619: /*
620: * Mark the connection as being incapable of further input.
621: */
622: case PRU_SHUTDOWN:
623: socantsendmore(so);
624: break;
625:
1.27 mycroft 626: case PRU_RCVD:
627: error = EOPNOTSUPP;
628: break;
629:
1.13 mycroft 630: /*
631: * Ship a packet out. The appropriate raw output
632: * routine handles any massaging necessary.
633: */
634: case PRU_SEND:
1.28 mycroft 635: if (control && control->m_len) {
636: m_freem(control);
637: m_freem(m);
638: error = EINVAL;
639: break;
640: }
641: {
1.27 mycroft 642: if (nam) {
643: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 644: error = EISCONN;
1.28 mycroft 645: goto die;
1.13 mycroft 646: }
1.27 mycroft 647: error = rip_connect(inp, nam);
648: if (error) {
1.28 mycroft 649: die:
1.27 mycroft 650: m_freem(m);
651: break;
652: }
1.13 mycroft 653: } else {
1.27 mycroft 654: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 655: error = ENOTCONN;
1.28 mycroft 656: goto die;
1.13 mycroft 657: }
658: }
1.27 mycroft 659: error = rip_output(m, inp);
660: if (nam)
661: rip_disconnect(inp);
1.28 mycroft 662: }
1.13 mycroft 663: break;
664:
665: case PRU_SENSE:
666: /*
667: * stat: don't bother with a blocksize.
668: */
1.27 mycroft 669: splx(s);
1.1 cgd 670: return (0);
1.13 mycroft 671:
672: case PRU_RCVOOB:
1.27 mycroft 673: error = EOPNOTSUPP;
674: break;
675:
1.13 mycroft 676: case PRU_SENDOOB:
1.28 mycroft 677: m_freem(control);
1.27 mycroft 678: m_freem(m);
1.13 mycroft 679: error = EOPNOTSUPP;
680: break;
681:
682: case PRU_SOCKADDR:
683: in_setsockaddr(inp, nam);
684: break;
685:
686: case PRU_PEERADDR:
687: in_setpeeraddr(inp, nam);
688: break;
689:
690: default:
691: panic("rip_usrreq");
1.1 cgd 692: }
1.27 mycroft 693:
1.22 pk 694: release:
1.27 mycroft 695: splx(s);
1.1 cgd 696: return (error);
697: }
1.84 atatat 698:
699: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
700: {
701:
702: sysctl_createv(clog, 0, NULL, NULL,
703: CTLFLAG_PERMANENT,
704: CTLTYPE_NODE, "net", NULL,
705: NULL, 0, NULL, 0,
706: CTL_NET, CTL_EOL);
707: sysctl_createv(clog, 0, NULL, NULL,
708: CTLFLAG_PERMANENT,
709: CTLTYPE_NODE, "inet", NULL,
710: NULL, 0, NULL, 0,
711: CTL_NET, PF_INET, CTL_EOL);
712: sysctl_createv(clog, 0, NULL, NULL,
713: CTLFLAG_PERMANENT,
714: CTLTYPE_NODE, "raw",
715: SYSCTL_DESCR("Raw IPv4 settings"),
716: NULL, 0, NULL, 0,
717: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
718:
719: sysctl_createv(clog, 0, NULL, NULL,
720: CTLFLAG_PERMANENT,
1.86 atatat 721: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 722: SYSCTL_DESCR("Raw IPv4 control block list"),
723: sysctl_inpcblist, 0, &rawcbtable, 0,
724: CTL_NET, PF_INET, IPPROTO_RAW,
725: CTL_CREATE, CTL_EOL);
726: }
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