Annotation of src/sys/netinet/raw_ip.c, Revision 1.105.2.1
1.105.2.1! yamt 1: /* $NetBSD: raw_ip.c,v 1.105 2008/04/12 05:58:22 thorpej 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>
1.105.2.1! yamt 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.105 2008/04/12 05:58:22 thorpej Exp $");
1.40 scottr 65:
1.78 jonathan 66: #include "opt_inet.h"
1.45 thorpej 67: #include "opt_ipsec.h"
1.40 scottr 68: #include "opt_mrouting.h"
1.1 cgd 69:
1.7 mycroft 70: #include <sys/param.h>
1.84 atatat 71: #include <sys/sysctl.h>
1.7 mycroft 72: #include <sys/malloc.h>
73: #include <sys/mbuf.h>
74: #include <sys/socket.h>
75: #include <sys/protosw.h>
76: #include <sys/socketvar.h>
77: #include <sys/errno.h>
1.13 mycroft 78: #include <sys/systm.h>
1.26 mycroft 79: #include <sys/proc.h>
1.89 elad 80: #include <sys/kauth.h>
1.1 cgd 81:
1.7 mycroft 82: #include <net/if.h>
83: #include <net/route.h>
1.1 cgd 84:
1.7 mycroft 85: #include <netinet/in.h>
86: #include <netinet/in_systm.h>
87: #include <netinet/ip.h>
88: #include <netinet/ip_var.h>
1.105 thorpej 89: #include <netinet/ip_private.h>
1.13 mycroft 90: #include <netinet/ip_mroute.h>
1.44 darrenr 91: #include <netinet/ip_icmp.h>
1.7 mycroft 92: #include <netinet/in_pcb.h>
1.87 yamt 93: #include <netinet/in_proto.h>
1.24 christos 94: #include <netinet/in_var.h>
95:
96: #include <machine/stdarg.h>
1.13 mycroft 97:
1.43 itojun 98: #ifdef IPSEC
99: #include <netinet6/ipsec.h>
1.105.2.1! yamt 100: #include <netinet6/ipsec_private.h>
! 101: #endif /* IPSEC */
1.43 itojun 102:
1.72 jonathan 103: #ifdef FAST_IPSEC
104: #include <netipsec/ipsec.h>
1.105.2.1! yamt 105: #include <netipsec/ipsec_var.h>
! 106: #include <netipsec/ipsec_private.h>
! 107: #endif /* FAST_IPSEC */
1.72 jonathan 108:
1.20 mycroft 109: struct inpcbtable rawcbtable;
1.30 pk 110:
1.82 perry 111: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
112: struct in_addr, int, int, void (*)(struct inpcb *, int));
113: int rip_bind(struct inpcb *, struct mbuf *);
114: int rip_connect(struct inpcb *, struct mbuf *);
115: void rip_disconnect(struct inpcb *);
1.13 mycroft 116:
117: /*
118: * Nominal space allocated to a raw ip socket.
119: */
120: #define RIPSNDQ 8192
121: #define RIPRCVQ 8192
1.1 cgd 122:
123: /*
124: * Raw interface to IP protocol.
125: */
1.13 mycroft 126:
127: /*
128: * Initialize raw connection block q.
129: */
130: void
1.83 perry 131: rip_init(void)
1.13 mycroft 132: {
133:
1.33 mycroft 134: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 135: }
136:
1.100 dyoung 137: static void
138: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
139: int hlen, struct mbuf *opts, struct mbuf *n)
140: {
141: if (last->inp_flags & INP_NOHEADER)
142: m_adj(n, hlen);
143: if (last->inp_flags & INP_CONTROLOPTS ||
144: last->inp_socket->so_options & SO_TIMESTAMP)
145: ip_savecontrol(last, &opts, ip, n);
146: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
147: /* should notify about lost packet */
148: m_freem(n);
149: if (opts)
150: m_freem(opts);
151: } else
152: sorwakeup(last->inp_socket);
153: }
154:
1.1 cgd 155: /*
156: * Setup generic address and protocol structures
157: * for raw_input routine, then pass them along with
158: * mbuf chain.
159: */
1.9 mycroft 160: void
1.24 christos 161: rip_input(struct mbuf *m, ...)
1.1 cgd 162: {
1.100 dyoung 163: int hlen, proto;
1.53 augustss 164: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 165: struct inpcb_hdr *inph;
1.53 augustss 166: struct inpcb *inp;
1.97 dyoung 167: struct inpcb *last = NULL;
168: struct mbuf *n, *opts = NULL;
1.32 mycroft 169: struct sockaddr_in ripsrc;
1.43 itojun 170: va_list ap;
171:
172: va_start(ap, m);
1.64 simonb 173: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 174: proto = va_arg(ap, int);
175: va_end(ap);
1.1 cgd 176:
1.97 dyoung 177: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 178:
179: /*
180: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 181: * XXX to have the header length subtracted, and in host order.
182: * XXX ip_off is also expected to be host order.
1.42 thorpej 183: */
1.100 dyoung 184: hlen = ip->ip_hl << 2;
185: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 186: NTOHS(ip->ip_off);
1.32 mycroft 187:
1.75 itojun 188: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
189: inp = (struct inpcb *)inph;
190: if (inp->inp_af != AF_INET)
191: continue;
1.43 itojun 192: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 193: continue;
1.32 mycroft 194: if (!in_nullhost(inp->inp_laddr) &&
195: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 196: continue;
1.32 mycroft 197: if (!in_nullhost(inp->inp_faddr) &&
198: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 199: continue;
1.97 dyoung 200: if (last == NULL)
201: ;
1.72 jonathan 202: #if defined(IPSEC) || defined(FAST_IPSEC)
1.97 dyoung 203: /* check AH/ESP integrity. */
204: else if (ipsec4_in_reject_so(m, last->inp_socket)) {
1.105.2.1! yamt 205: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 206: /* do not inject data to pcb */
207: }
208: #endif /*IPSEC*/
1.99 dyoung 209: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 210: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
211: n);
1.97 dyoung 212: opts = NULL;
1.13 mycroft 213: }
1.36 thorpej 214: last = inp;
1.13 mycroft 215: }
1.72 jonathan 216: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 217: /* check AH/ESP integrity. */
1.97 dyoung 218: if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55 itojun 219: m_freem(m);
1.105.2.1! yamt 220: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 221: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 222: /* do not inject data to pcb */
223: } else
224: #endif /*IPSEC*/
1.100 dyoung 225: if (last != NULL)
226: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
227: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 228: uint64_t *ips;
229:
1.97 dyoung 230: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
231: 0, 0);
1.105 thorpej 232: ips = IP_STAT_GETREF();
233: ips[IP_STAT_NOPROTO]++;
234: ips[IP_STAT_DELIVERED]--;
235: IP_STAT_PUTREF();
1.97 dyoung 236: } else
237: m_freem(m);
1.43 itojun 238: return;
1.60 itojun 239: }
240:
241: int
1.83 perry 242: rip_pcbnotify(struct inpcbtable *table,
243: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
244: void (*notify)(struct inpcb *, int))
1.60 itojun 245: {
246: struct inpcb *inp, *ninp;
247: int nmatch;
248:
249: nmatch = 0;
1.75 itojun 250: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 251: inp != (struct inpcb *)&table->inpt_queue;
252: inp = ninp) {
1.75 itojun 253: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
254: if (inp->inp_af != AF_INET)
255: continue;
1.60 itojun 256: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
257: continue;
258: if (in_hosteq(inp->inp_faddr, faddr) &&
259: in_hosteq(inp->inp_laddr, laddr)) {
260: (*notify)(inp, errno);
261: nmatch++;
262: }
263: }
264:
265: return nmatch;
266: }
267:
268: void *
1.95 dyoung 269: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 270: {
271: struct ip *ip = v;
1.82 perry 272: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 273: int errno;
274:
275: if (sa->sa_family != AF_INET ||
276: sa->sa_len != sizeof(struct sockaddr_in))
277: return NULL;
278: if ((unsigned)cmd >= PRC_NCMDS)
279: return NULL;
280: errno = inetctlerrmap[cmd];
281: if (PRC_IS_REDIRECT(cmd))
282: notify = in_rtchange, ip = 0;
283: else if (cmd == PRC_HOSTDEAD)
284: ip = 0;
285: else if (errno == 0)
286: return NULL;
287: if (ip) {
1.95 dyoung 288: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 289: ip->ip_src, ip->ip_p, errno, notify);
290:
291: /* XXX mapped address case */
292: } else
1.95 dyoung 293: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 294: notify);
295: return NULL;
1.1 cgd 296: }
297:
298: /*
299: * Generate IP header and pass packet to ip_output.
300: * Tack on options user may have setup with control call.
301: */
1.9 mycroft 302: int
1.24 christos 303: rip_output(struct mbuf *m, ...)
304: {
1.53 augustss 305: struct inpcb *inp;
306: struct ip *ip;
1.10 mycroft 307: struct mbuf *opts;
1.24 christos 308: int flags;
309: va_list ap;
310:
311: va_start(ap, m);
1.27 mycroft 312: inp = va_arg(ap, struct inpcb *);
1.24 christos 313: va_end(ap);
314:
1.27 mycroft 315: flags =
1.37 matt 316: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
317: | IP_RETURNMTU;
1.1 cgd 318:
319: /*
320: * If the user handed us a complete IP packet, use it.
321: * Otherwise, allocate an mbuf for a header and fill it in.
322: */
1.13 mycroft 323: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 324: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
325: m_freem(m);
326: return (EMSGSIZE);
327: }
1.68 itojun 328: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
329: if (!m)
330: return (ENOBUFS);
1.1 cgd 331: ip = mtod(m, struct ip *);
332: ip->ip_tos = 0;
1.62 itojun 333: ip->ip_off = htons(0);
1.13 mycroft 334: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 335: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 336: ip->ip_src = inp->inp_laddr;
1.27 mycroft 337: ip->ip_dst = inp->inp_faddr;
1.1 cgd 338: ip->ip_ttl = MAXTTL;
1.13 mycroft 339: opts = inp->inp_options;
340: } else {
1.35 thorpej 341: if (m->m_pkthdr.len > IP_MAXPACKET) {
342: m_freem(m);
343: return (EMSGSIZE);
344: }
1.13 mycroft 345: ip = mtod(m, struct ip *);
1.65 thorpej 346:
347: /*
348: * If the mbuf is read-only, we need to allocate
349: * a new mbuf for the header, since we need to
350: * modify the header.
351: */
352: if (M_READONLY(m)) {
353: int hlen = ip->ip_hl << 2;
354:
355: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
356: if (m == NULL)
357: return (ENOMEM); /* XXX */
358: ip = mtod(m, struct ip *);
359: }
360:
1.62 itojun 361: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 362: if (m->m_pkthdr.len != ip->ip_len) {
363: m_freem(m);
364: return (EINVAL);
365: }
1.62 itojun 366: HTONS(ip->ip_len);
367: HTONS(ip->ip_off);
1.103 matt 368: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
369: flags |= IP_NOIPNEWID;
1.13 mycroft 370: opts = NULL;
371: /* XXX prevent ip_output from overwriting header fields */
372: flags |= IP_RAWOUTPUT;
1.105 thorpej 373: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 374: }
1.62 itojun 375: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 376: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 377: }
378:
379: /*
380: * Raw IP socket option processing.
381: */
1.9 mycroft 382: int
1.83 perry 383: rip_ctloutput(int op, struct socket *so, int level, int optname,
384: struct mbuf **m)
1.1 cgd 385: {
1.53 augustss 386: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 387: int error = 0;
1.1 cgd 388:
1.100 dyoung 389: if (level == SOL_SOCKET && optname == SO_NOHEADER) {
390: if (op == PRCO_GETOPT) {
391: *m = m_intopt(so,
392: (inp->inp_flags & INP_NOHEADER) ? 1 : 0);
393: return 0;
1.101 christos 394: } else if (*m == NULL || (*m)->m_len != sizeof(int))
1.100 dyoung 395: error = EINVAL;
396: else if (*mtod(*m, int *)) {
397: inp->inp_flags &= ~INP_HDRINCL;
398: inp->inp_flags |= INP_NOHEADER;
399: } else
400: inp->inp_flags &= ~INP_NOHEADER;
401: goto free_m;
402: } else if (level != IPPROTO_IP)
403: return ip_ctloutput(op, so, level, optname, m);
404:
405: switch (op) {
1.31 mycroft 406:
407: case PRCO_SETOPT:
408: switch (optname) {
409: case IP_HDRINCL:
1.101 christos 410: if (*m == NULL || (*m)->m_len != sizeof(int))
1.31 mycroft 411: error = EINVAL;
1.100 dyoung 412: else if (*mtod(*m, int *))
413: inp->inp_flags |= INP_HDRINCL;
414: else
415: inp->inp_flags &= ~INP_HDRINCL;
416: goto free_m;
1.31 mycroft 417:
418: #ifdef MROUTING
419: case MRT_INIT:
420: case MRT_DONE:
421: case MRT_ADD_VIF:
422: case MRT_DEL_VIF:
423: case MRT_ADD_MFC:
424: case MRT_DEL_MFC:
425: case MRT_ASSERT:
1.81 manu 426: case MRT_API_CONFIG:
427: case MRT_ADD_BW_UPCALL:
428: case MRT_DEL_BW_UPCALL:
1.31 mycroft 429: error = ip_mrouter_set(so, optname, m);
430: break;
431: #endif
432:
433: default:
434: error = ip_ctloutput(op, so, level, optname, m);
435: break;
1.13 mycroft 436: }
437: break;
1.1 cgd 438:
1.31 mycroft 439: case PRCO_GETOPT:
440: switch (optname) {
441: case IP_HDRINCL:
1.100 dyoung 442: *m = m_intopt(so, inp->inp_flags & INP_HDRINCL ? 1 : 0);
1.31 mycroft 443: break;
444:
1.6 hpeyerl 445: #ifdef MROUTING
1.31 mycroft 446: case MRT_VERSION:
447: case MRT_ASSERT:
1.81 manu 448: case MRT_API_SUPPORT:
449: case MRT_API_CONFIG:
1.31 mycroft 450: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 451: break;
1.31 mycroft 452: #endif
453:
1.18 mycroft 454: default:
1.31 mycroft 455: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 456: break;
457: }
1.31 mycroft 458: break;
1.1 cgd 459: }
1.100 dyoung 460: return error;
461: free_m:
462: if (op == PRCO_SETOPT && *m != NULL)
463: (void)m_free(*m);
464: return error;
1.1 cgd 465: }
466:
1.27 mycroft 467: int
1.83 perry 468: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 469: {
470: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
471:
472: if (nam->m_len != sizeof(*addr))
473: return (EINVAL);
1.58 matt 474: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 475: return (EADDRNOTAVAIL);
476: if (addr->sin_family != AF_INET &&
477: addr->sin_family != AF_IMPLINK)
478: return (EAFNOSUPPORT);
1.32 mycroft 479: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 480: ifa_ifwithaddr(sintosa(addr)) == 0)
481: return (EADDRNOTAVAIL);
482: inp->inp_laddr = addr->sin_addr;
483: return (0);
484: }
485:
486: int
1.83 perry 487: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 488: {
489: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
490:
491: if (nam->m_len != sizeof(*addr))
492: return (EINVAL);
1.58 matt 493: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 494: return (EADDRNOTAVAIL);
495: if (addr->sin_family != AF_INET &&
496: addr->sin_family != AF_IMPLINK)
497: return (EAFNOSUPPORT);
498: inp->inp_faddr = addr->sin_addr;
499: return (0);
500: }
501:
502: void
1.83 perry 503: rip_disconnect(struct inpcb *inp)
1.27 mycroft 504: {
505:
1.32 mycroft 506: inp->inp_faddr = zeroin_addr;
1.27 mycroft 507: }
508:
1.13 mycroft 509: u_long rip_sendspace = RIPSNDQ;
510: u_long rip_recvspace = RIPRCVQ;
511:
1.1 cgd 512: /*ARGSUSED*/
1.9 mycroft 513: int
1.83 perry 514: rip_usrreq(struct socket *so, int req,
1.88 christos 515: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 516: {
1.53 augustss 517: struct inpcb *inp;
1.27 mycroft 518: int s;
1.53 augustss 519: int error = 0;
1.13 mycroft 520: #ifdef MROUTING
1.6 hpeyerl 521: extern struct socket *ip_mrouter;
522: #endif
1.27 mycroft 523:
1.22 pk 524: if (req == PRU_CONTROL)
1.96 christos 525: return (in_control(so, (long)m, (void *)nam,
1.90 ad 526: (struct ifnet *)control, l));
1.49 thorpej 527:
1.93 tls 528: s = splsoftnet();
529:
1.50 thorpej 530: if (req == PRU_PURGEIF) {
1.105.2.1! yamt 531: mutex_enter(softnet_lock);
1.56 itojun 532: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 533: in_purgeif((struct ifnet *)control);
534: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.105.2.1! yamt 535: mutex_exit(softnet_lock);
1.93 tls 536: splx(s);
1.49 thorpej 537: return (0);
538: }
1.22 pk 539:
1.27 mycroft 540: inp = sotoinpcb(so);
1.28 mycroft 541: #ifdef DIAGNOSTIC
542: if (req != PRU_SEND && req != PRU_SENDOOB && control)
543: panic("rip_usrreq: unexpected control mbuf");
544: #endif
1.27 mycroft 545: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 546: error = EINVAL;
547: goto release;
548: }
549:
1.1 cgd 550: switch (req) {
551:
552: case PRU_ATTACH:
1.105.2.1! yamt 553: sosetlock(so);
1.27 mycroft 554: if (inp != 0) {
555: error = EISCONN;
556: break;
557: }
1.94 elad 558:
559: if (l == NULL) {
1.13 mycroft 560: error = EACCES;
561: break;
562: }
1.94 elad 563:
564: /* XXX: raw socket permissions are checked in socreate() */
565:
1.27 mycroft 566: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
567: error = soreserve(so, rip_sendspace, rip_recvspace);
568: if (error)
569: break;
570: }
571: error = in_pcballoc(so, &rawcbtable);
572: if (error)
1.13 mycroft 573: break;
1.27 mycroft 574: inp = sotoinpcb(so);
1.17 cgd 575: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 576: break;
577:
578: case PRU_DETACH:
1.13 mycroft 579: #ifdef MROUTING
1.6 hpeyerl 580: if (so == ip_mrouter)
581: ip_mrouter_done();
582: #endif
1.13 mycroft 583: in_pcbdetach(inp);
1.1 cgd 584: break;
585:
586: case PRU_BIND:
1.29 mycroft 587: error = rip_bind(inp, nam);
1.27 mycroft 588: break;
589:
590: case PRU_LISTEN:
591: error = EOPNOTSUPP;
592: break;
593:
594: case PRU_CONNECT:
595: error = rip_connect(inp, nam);
596: if (error)
1.13 mycroft 597: break;
1.1 cgd 598: soisconnected(so);
1.13 mycroft 599: break;
600:
601: case PRU_CONNECT2:
602: error = EOPNOTSUPP;
603: break;
604:
1.27 mycroft 605: case PRU_DISCONNECT:
606: soisdisconnected(so);
607: rip_disconnect(inp);
608: break;
609:
1.13 mycroft 610: /*
611: * Mark the connection as being incapable of further input.
612: */
613: case PRU_SHUTDOWN:
614: socantsendmore(so);
615: break;
616:
1.27 mycroft 617: case PRU_RCVD:
618: error = EOPNOTSUPP;
619: break;
620:
1.13 mycroft 621: /*
622: * Ship a packet out. The appropriate raw output
623: * routine handles any massaging necessary.
624: */
625: case PRU_SEND:
1.28 mycroft 626: if (control && control->m_len) {
627: m_freem(control);
628: m_freem(m);
629: error = EINVAL;
630: break;
631: }
632: {
1.27 mycroft 633: if (nam) {
634: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 635: error = EISCONN;
1.28 mycroft 636: goto die;
1.13 mycroft 637: }
1.27 mycroft 638: error = rip_connect(inp, nam);
639: if (error) {
1.28 mycroft 640: die:
1.27 mycroft 641: m_freem(m);
642: break;
643: }
1.13 mycroft 644: } else {
1.27 mycroft 645: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 646: error = ENOTCONN;
1.28 mycroft 647: goto die;
1.13 mycroft 648: }
649: }
1.27 mycroft 650: error = rip_output(m, inp);
651: if (nam)
652: rip_disconnect(inp);
1.28 mycroft 653: }
1.13 mycroft 654: break;
655:
656: case PRU_SENSE:
657: /*
658: * stat: don't bother with a blocksize.
659: */
1.27 mycroft 660: splx(s);
1.1 cgd 661: return (0);
1.13 mycroft 662:
663: case PRU_RCVOOB:
1.27 mycroft 664: error = EOPNOTSUPP;
665: break;
666:
1.13 mycroft 667: case PRU_SENDOOB:
1.28 mycroft 668: m_freem(control);
1.27 mycroft 669: m_freem(m);
1.13 mycroft 670: error = EOPNOTSUPP;
671: break;
672:
673: case PRU_SOCKADDR:
674: in_setsockaddr(inp, nam);
675: break;
676:
677: case PRU_PEERADDR:
678: in_setpeeraddr(inp, nam);
679: break;
680:
681: default:
682: panic("rip_usrreq");
1.1 cgd 683: }
1.27 mycroft 684:
1.22 pk 685: release:
1.27 mycroft 686: splx(s);
1.1 cgd 687: return (error);
688: }
1.84 atatat 689:
690: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
691: {
692:
693: sysctl_createv(clog, 0, NULL, NULL,
694: CTLFLAG_PERMANENT,
695: CTLTYPE_NODE, "net", NULL,
696: NULL, 0, NULL, 0,
697: CTL_NET, CTL_EOL);
698: sysctl_createv(clog, 0, NULL, NULL,
699: CTLFLAG_PERMANENT,
700: CTLTYPE_NODE, "inet", NULL,
701: NULL, 0, NULL, 0,
702: CTL_NET, PF_INET, CTL_EOL);
703: sysctl_createv(clog, 0, NULL, NULL,
704: CTLFLAG_PERMANENT,
705: CTLTYPE_NODE, "raw",
706: SYSCTL_DESCR("Raw IPv4 settings"),
707: NULL, 0, NULL, 0,
708: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
709:
710: sysctl_createv(clog, 0, NULL, NULL,
711: CTLFLAG_PERMANENT,
1.86 atatat 712: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 713: SYSCTL_DESCR("Raw IPv4 control block list"),
714: sysctl_inpcblist, 0, &rawcbtable, 0,
715: CTL_NET, PF_INET, IPPROTO_RAW,
716: CTL_CREATE, CTL_EOL);
717: }
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