Annotation of src/sys/netinet/raw_ip.c, Revision 1.86
1.86 ! atatat 1: /* $NetBSD: raw_ip.c,v 1.85 2005/03/10 05:43:25 atatat 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>
1.86 ! atatat 64: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.85 2005/03/10 05:43:25 atatat 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>
1.1 cgd 80:
1.7 mycroft 81: #include <net/if.h>
82: #include <net/route.h>
1.1 cgd 83:
1.7 mycroft 84: #include <netinet/in.h>
85: #include <netinet/in_systm.h>
86: #include <netinet/ip.h>
87: #include <netinet/ip_var.h>
1.13 mycroft 88: #include <netinet/ip_mroute.h>
1.44 darrenr 89: #include <netinet/ip_icmp.h>
1.7 mycroft 90: #include <netinet/in_pcb.h>
1.24 christos 91: #include <netinet/in_var.h>
92:
93: #include <machine/stdarg.h>
1.13 mycroft 94:
1.43 itojun 95: #ifdef IPSEC
96: #include <netinet6/ipsec.h>
97: #endif /*IPSEC*/
98:
1.72 jonathan 99: #ifdef FAST_IPSEC
100: #include <netipsec/ipsec.h>
1.80 jonathan 101: #include <netipsec/ipsec_var.h> /* XXX ipsecstat namespace */
1.72 jonathan 102: #endif /* FAST_IPSEC*/
103:
1.20 mycroft 104: struct inpcbtable rawcbtable;
1.30 pk 105:
1.82 perry 106: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
107: struct in_addr, int, int, void (*)(struct inpcb *, int));
108: int rip_bind(struct inpcb *, struct mbuf *);
109: int rip_connect(struct inpcb *, struct mbuf *);
110: void rip_disconnect(struct inpcb *);
1.13 mycroft 111:
112: /*
113: * Nominal space allocated to a raw ip socket.
114: */
115: #define RIPSNDQ 8192
116: #define RIPRCVQ 8192
1.1 cgd 117:
118: /*
119: * Raw interface to IP protocol.
120: */
1.13 mycroft 121:
122: /*
123: * Initialize raw connection block q.
124: */
125: void
1.83 perry 126: rip_init(void)
1.13 mycroft 127: {
128:
1.33 mycroft 129: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 130: }
131:
1.1 cgd 132: /*
133: * Setup generic address and protocol structures
134: * for raw_input routine, then pass them along with
135: * mbuf chain.
136: */
1.9 mycroft 137: void
1.24 christos 138: rip_input(struct mbuf *m, ...)
1.1 cgd 139: {
1.63 simonb 140: int proto;
1.53 augustss 141: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 142: struct inpcb_hdr *inph;
1.53 augustss 143: struct inpcb *inp;
1.36 thorpej 144: struct inpcb *last = 0;
145: struct mbuf *opts = 0;
1.32 mycroft 146: struct sockaddr_in ripsrc;
1.43 itojun 147: va_list ap;
148:
149: va_start(ap, m);
1.64 simonb 150: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 151: proto = va_arg(ap, int);
152: va_end(ap);
1.1 cgd 153:
1.32 mycroft 154: ripsrc.sin_family = AF_INET;
155: ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1 cgd 156: ripsrc.sin_addr = ip->ip_src;
1.34 mycroft 157: ripsrc.sin_port = 0;
158: bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42 thorpej 159:
160: /*
161: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 162: * XXX to have the header length subtracted, and in host order.
163: * XXX ip_off is also expected to be host order.
1.42 thorpej 164: */
1.62 itojun 165: ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2);
166: NTOHS(ip->ip_off);
1.32 mycroft 167:
1.75 itojun 168: CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
169: inp = (struct inpcb *)inph;
170: if (inp->inp_af != AF_INET)
171: continue;
1.43 itojun 172: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 173: continue;
1.32 mycroft 174: if (!in_nullhost(inp->inp_laddr) &&
175: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 176: continue;
1.32 mycroft 177: if (!in_nullhost(inp->inp_faddr) &&
178: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 179: continue;
180: if (last) {
181: struct mbuf *n;
1.55 itojun 182:
1.72 jonathan 183: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 184: /* check AH/ESP integrity. */
185: if (ipsec4_in_reject_so(m, last->inp_socket)) {
186: ipsecstat.in_polvio++;
187: /* do not inject data to pcb */
188: } else
189: #endif /*IPSEC*/
1.24 christos 190: if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36 thorpej 191: if (last->inp_flags & INP_CONTROLOPTS ||
192: last->inp_socket->so_options & SO_TIMESTAMP)
193: ip_savecontrol(last, &opts, ip, n);
194: if (sbappendaddr(&last->inp_socket->so_rcv,
195: sintosa(&ripsrc), n, opts) == 0) {
1.13 mycroft 196: /* should notify about lost packet */
197: m_freem(n);
1.36 thorpej 198: if (opts)
199: m_freem(opts);
200: } else
201: sorwakeup(last->inp_socket);
1.41 thorpej 202: opts = NULL;
1.13 mycroft 203: }
204: }
1.36 thorpej 205: last = inp;
1.13 mycroft 206: }
1.72 jonathan 207: #if defined(IPSEC) || defined(FAST_IPSEC)
1.55 itojun 208: /* check AH/ESP integrity. */
209: if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
210: m_freem(m);
211: ipsecstat.in_polvio++;
212: ipstat.ips_delivered--;
213: /* do not inject data to pcb */
214: } else
215: #endif /*IPSEC*/
1.13 mycroft 216: if (last) {
1.36 thorpej 217: if (last->inp_flags & INP_CONTROLOPTS ||
218: last->inp_socket->so_options & SO_TIMESTAMP)
219: ip_savecontrol(last, &opts, ip, m);
220: if (sbappendaddr(&last->inp_socket->so_rcv,
221: sintosa(&ripsrc), m, opts) == 0) {
1.13 mycroft 222: m_freem(m);
1.36 thorpej 223: if (opts)
224: m_freem(opts);
225: } else
226: sorwakeup(last->inp_socket);
1.13 mycroft 227: } else {
1.44 darrenr 228: if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.47 itojun 229: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
230: 0, 0);
1.44 darrenr 231: ipstat.ips_noproto++;
232: ipstat.ips_delivered--;
233: } else
234: m_freem(m);
1.1 cgd 235: }
1.43 itojun 236: return;
1.60 itojun 237: }
238:
239: int
1.83 perry 240: rip_pcbnotify(struct inpcbtable *table,
241: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
242: void (*notify)(struct inpcb *, int))
1.60 itojun 243: {
244: struct inpcb *inp, *ninp;
245: int nmatch;
246:
247: nmatch = 0;
1.75 itojun 248: for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue);
1.60 itojun 249: inp != (struct inpcb *)&table->inpt_queue;
250: inp = ninp) {
1.75 itojun 251: ninp = (struct inpcb *)inp->inp_queue.cqe_next;
252: if (inp->inp_af != AF_INET)
253: continue;
1.60 itojun 254: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
255: continue;
256: if (in_hosteq(inp->inp_faddr, faddr) &&
257: in_hosteq(inp->inp_laddr, laddr)) {
258: (*notify)(inp, errno);
259: nmatch++;
260: }
261: }
262:
263: return nmatch;
264: }
265:
266: void *
1.83 perry 267: rip_ctlinput(int cmd, struct sockaddr *sa, void *v)
1.60 itojun 268: {
269: struct ip *ip = v;
1.82 perry 270: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 271: int errno;
272:
273: if (sa->sa_family != AF_INET ||
274: sa->sa_len != sizeof(struct sockaddr_in))
275: return NULL;
276: if ((unsigned)cmd >= PRC_NCMDS)
277: return NULL;
278: errno = inetctlerrmap[cmd];
279: if (PRC_IS_REDIRECT(cmd))
280: notify = in_rtchange, ip = 0;
281: else if (cmd == PRC_HOSTDEAD)
282: ip = 0;
283: else if (errno == 0)
284: return NULL;
285: if (ip) {
286: rip_pcbnotify(&rawcbtable, satosin(sa)->sin_addr,
287: ip->ip_src, ip->ip_p, errno, notify);
288:
289: /* XXX mapped address case */
290: } else
291: in_pcbnotifyall(&rawcbtable, satosin(sa)->sin_addr, errno,
292: notify);
293: return NULL;
1.1 cgd 294: }
295:
296: /*
297: * Generate IP header and pass packet to ip_output.
298: * Tack on options user may have setup with control call.
299: */
1.9 mycroft 300: int
1.24 christos 301: rip_output(struct mbuf *m, ...)
302: {
1.53 augustss 303: struct inpcb *inp;
304: struct ip *ip;
1.10 mycroft 305: struct mbuf *opts;
1.24 christos 306: int flags;
307: va_list ap;
308:
309: va_start(ap, m);
1.27 mycroft 310: inp = va_arg(ap, struct inpcb *);
1.24 christos 311: va_end(ap);
312:
1.27 mycroft 313: flags =
1.37 matt 314: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
315: | IP_RETURNMTU;
1.1 cgd 316:
317: /*
318: * If the user handed us a complete IP packet, use it.
319: * Otherwise, allocate an mbuf for a header and fill it in.
320: */
1.13 mycroft 321: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 322: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
323: m_freem(m);
324: return (EMSGSIZE);
325: }
1.68 itojun 326: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
327: if (!m)
328: return (ENOBUFS);
1.1 cgd 329: ip = mtod(m, struct ip *);
330: ip->ip_tos = 0;
1.62 itojun 331: ip->ip_off = htons(0);
1.13 mycroft 332: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 333: ip->ip_len = htons(m->m_pkthdr.len);
1.13 mycroft 334: ip->ip_src = inp->inp_laddr;
1.27 mycroft 335: ip->ip_dst = inp->inp_faddr;
1.1 cgd 336: ip->ip_ttl = MAXTTL;
1.13 mycroft 337: opts = inp->inp_options;
338: } else {
1.35 thorpej 339: if (m->m_pkthdr.len > IP_MAXPACKET) {
340: m_freem(m);
341: return (EMSGSIZE);
342: }
1.13 mycroft 343: ip = mtod(m, struct ip *);
1.65 thorpej 344:
345: /*
346: * If the mbuf is read-only, we need to allocate
347: * a new mbuf for the header, since we need to
348: * modify the header.
349: */
350: if (M_READONLY(m)) {
351: int hlen = ip->ip_hl << 2;
352:
353: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
354: if (m == NULL)
355: return (ENOMEM); /* XXX */
356: ip = mtod(m, struct ip *);
357: }
358:
1.62 itojun 359: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 360: if (m->m_pkthdr.len != ip->ip_len) {
361: m_freem(m);
362: return (EINVAL);
363: }
1.62 itojun 364: HTONS(ip->ip_len);
365: HTONS(ip->ip_off);
1.13 mycroft 366: if (ip->ip_id == 0)
1.77 jonathan 367: ip->ip_id = ip_newid();
1.13 mycroft 368: opts = NULL;
369: /* XXX prevent ip_output from overwriting header fields */
370: flags |= IP_RAWOUTPUT;
371: ipstat.ips_rawout++;
1.1 cgd 372: }
1.62 itojun 373: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.73 itojun 374: inp->inp_socket, &inp->inp_errormtu));
1.1 cgd 375: }
376:
377: /*
378: * Raw IP socket option processing.
379: */
1.9 mycroft 380: int
1.83 perry 381: rip_ctloutput(int op, struct socket *so, int level, int optname,
382: struct mbuf **m)
1.1 cgd 383: {
1.53 augustss 384: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 385: int error = 0;
1.1 cgd 386:
1.15 mycroft 387: if (level != IPPROTO_IP) {
1.31 mycroft 388: error = ENOPROTOOPT;
389: if (op == PRCO_SETOPT && *m != 0)
390: (void) m_free(*m);
391: } else switch (op) {
392:
393: case PRCO_SETOPT:
394: switch (optname) {
395: case IP_HDRINCL:
396: if (*m == 0 || (*m)->m_len < sizeof (int))
397: error = EINVAL;
398: else {
1.13 mycroft 399: if (*mtod(*m, int *))
400: inp->inp_flags |= INP_HDRINCL;
401: else
402: inp->inp_flags &= ~INP_HDRINCL;
403: }
1.31 mycroft 404: if (*m != 0)
405: (void) m_free(*m);
406: break;
407:
408: #ifdef MROUTING
409: case MRT_INIT:
410: case MRT_DONE:
411: case MRT_ADD_VIF:
412: case MRT_DEL_VIF:
413: case MRT_ADD_MFC:
414: case MRT_DEL_MFC:
415: case MRT_ASSERT:
1.81 manu 416: case MRT_API_CONFIG:
417: case MRT_ADD_BW_UPCALL:
418: case MRT_DEL_BW_UPCALL:
1.31 mycroft 419: error = ip_mrouter_set(so, optname, m);
420: break;
421: #endif
422:
423: default:
424: error = ip_ctloutput(op, so, level, optname, m);
425: break;
1.13 mycroft 426: }
427: break;
1.1 cgd 428:
1.31 mycroft 429: case PRCO_GETOPT:
430: switch (optname) {
431: case IP_HDRINCL:
1.66 thorpej 432: *m = m_get(M_WAIT, MT_SOOPTS);
1.67 matt 433: MCLAIM((*m), so->so_mowner);
1.31 mycroft 434: (*m)->m_len = sizeof (int);
435: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
436: break;
437:
1.6 hpeyerl 438: #ifdef MROUTING
1.31 mycroft 439: case MRT_VERSION:
440: case MRT_ASSERT:
1.81 manu 441: case MRT_API_SUPPORT:
442: case MRT_API_CONFIG:
1.31 mycroft 443: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 444: break;
1.31 mycroft 445: #endif
446:
1.18 mycroft 447: default:
1.31 mycroft 448: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 449: break;
450: }
1.31 mycroft 451: break;
1.1 cgd 452: }
1.31 mycroft 453: return (error);
1.1 cgd 454: }
455:
1.27 mycroft 456: int
1.83 perry 457: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 458: {
459: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
460:
461: if (nam->m_len != sizeof(*addr))
462: return (EINVAL);
1.58 matt 463: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 464: return (EADDRNOTAVAIL);
465: if (addr->sin_family != AF_INET &&
466: addr->sin_family != AF_IMPLINK)
467: return (EAFNOSUPPORT);
1.32 mycroft 468: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 469: ifa_ifwithaddr(sintosa(addr)) == 0)
470: return (EADDRNOTAVAIL);
471: inp->inp_laddr = addr->sin_addr;
472: return (0);
473: }
474:
475: int
1.83 perry 476: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 477: {
478: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
479:
480: if (nam->m_len != sizeof(*addr))
481: return (EINVAL);
1.58 matt 482: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 483: return (EADDRNOTAVAIL);
484: if (addr->sin_family != AF_INET &&
485: addr->sin_family != AF_IMPLINK)
486: return (EAFNOSUPPORT);
487: inp->inp_faddr = addr->sin_addr;
488: return (0);
489: }
490:
491: void
1.83 perry 492: rip_disconnect(struct inpcb *inp)
1.27 mycroft 493: {
494:
1.32 mycroft 495: inp->inp_faddr = zeroin_addr;
1.27 mycroft 496: }
497:
1.13 mycroft 498: u_long rip_sendspace = RIPSNDQ;
499: u_long rip_recvspace = RIPRCVQ;
500:
1.1 cgd 501: /*ARGSUSED*/
1.9 mycroft 502: int
1.83 perry 503: rip_usrreq(struct socket *so, int req,
504: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct proc *p)
1.1 cgd 505: {
1.53 augustss 506: struct inpcb *inp;
1.27 mycroft 507: int s;
1.53 augustss 508: int error = 0;
1.13 mycroft 509: #ifdef MROUTING
1.6 hpeyerl 510: extern struct socket *ip_mrouter;
511: #endif
1.27 mycroft 512:
1.22 pk 513: if (req == PRU_CONTROL)
514: return (in_control(so, (long)m, (caddr_t)nam,
1.26 mycroft 515: (struct ifnet *)control, p));
1.49 thorpej 516:
1.50 thorpej 517: if (req == PRU_PURGEIF) {
1.56 itojun 518: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 519: in_purgeif((struct ifnet *)control);
520: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49 thorpej 521: return (0);
522: }
1.22 pk 523:
1.27 mycroft 524: s = splsoftnet();
525: inp = sotoinpcb(so);
1.28 mycroft 526: #ifdef DIAGNOSTIC
527: if (req != PRU_SEND && req != PRU_SENDOOB && control)
528: panic("rip_usrreq: unexpected control mbuf");
529: #endif
1.27 mycroft 530: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 531: error = EINVAL;
532: goto release;
533: }
534:
1.1 cgd 535: switch (req) {
536:
537: case PRU_ATTACH:
1.27 mycroft 538: if (inp != 0) {
539: error = EISCONN;
540: break;
541: }
1.26 mycroft 542: if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13 mycroft 543: error = EACCES;
544: break;
545: }
1.27 mycroft 546: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
547: error = soreserve(so, rip_sendspace, rip_recvspace);
548: if (error)
549: break;
550: }
551: error = in_pcballoc(so, &rawcbtable);
552: if (error)
1.13 mycroft 553: break;
1.27 mycroft 554: inp = sotoinpcb(so);
1.17 cgd 555: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 556: break;
557:
558: case PRU_DETACH:
1.13 mycroft 559: #ifdef MROUTING
1.6 hpeyerl 560: if (so == ip_mrouter)
561: ip_mrouter_done();
562: #endif
1.13 mycroft 563: in_pcbdetach(inp);
1.1 cgd 564: break;
565:
566: case PRU_BIND:
1.29 mycroft 567: error = rip_bind(inp, nam);
1.27 mycroft 568: break;
569:
570: case PRU_LISTEN:
571: error = EOPNOTSUPP;
572: break;
573:
574: case PRU_CONNECT:
575: error = rip_connect(inp, nam);
576: if (error)
1.13 mycroft 577: break;
1.1 cgd 578: soisconnected(so);
1.13 mycroft 579: break;
580:
581: case PRU_CONNECT2:
582: error = EOPNOTSUPP;
583: break;
584:
1.27 mycroft 585: case PRU_DISCONNECT:
586: soisdisconnected(so);
587: rip_disconnect(inp);
588: break;
589:
1.13 mycroft 590: /*
591: * Mark the connection as being incapable of further input.
592: */
593: case PRU_SHUTDOWN:
594: socantsendmore(so);
595: break;
596:
1.27 mycroft 597: case PRU_RCVD:
598: error = EOPNOTSUPP;
599: break;
600:
1.13 mycroft 601: /*
602: * Ship a packet out. The appropriate raw output
603: * routine handles any massaging necessary.
604: */
605: case PRU_SEND:
1.28 mycroft 606: if (control && control->m_len) {
607: m_freem(control);
608: m_freem(m);
609: error = EINVAL;
610: break;
611: }
612: {
1.27 mycroft 613: if (nam) {
614: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 615: error = EISCONN;
1.28 mycroft 616: goto die;
1.13 mycroft 617: }
1.27 mycroft 618: error = rip_connect(inp, nam);
619: if (error) {
1.28 mycroft 620: die:
1.27 mycroft 621: m_freem(m);
622: break;
623: }
1.13 mycroft 624: } else {
1.27 mycroft 625: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 626: error = ENOTCONN;
1.28 mycroft 627: goto die;
1.13 mycroft 628: }
629: }
1.27 mycroft 630: error = rip_output(m, inp);
631: if (nam)
632: rip_disconnect(inp);
1.28 mycroft 633: }
1.13 mycroft 634: break;
635:
636: case PRU_SENSE:
637: /*
638: * stat: don't bother with a blocksize.
639: */
1.27 mycroft 640: splx(s);
1.1 cgd 641: return (0);
1.13 mycroft 642:
643: case PRU_RCVOOB:
1.27 mycroft 644: error = EOPNOTSUPP;
645: break;
646:
1.13 mycroft 647: case PRU_SENDOOB:
1.28 mycroft 648: m_freem(control);
1.27 mycroft 649: m_freem(m);
1.13 mycroft 650: error = EOPNOTSUPP;
651: break;
652:
653: case PRU_SOCKADDR:
654: in_setsockaddr(inp, nam);
655: break;
656:
657: case PRU_PEERADDR:
658: in_setpeeraddr(inp, nam);
659: break;
660:
661: default:
662: panic("rip_usrreq");
1.1 cgd 663: }
1.27 mycroft 664:
1.22 pk 665: release:
1.27 mycroft 666: splx(s);
1.1 cgd 667: return (error);
668: }
1.84 atatat 669:
670: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
671: {
672:
673: sysctl_createv(clog, 0, NULL, NULL,
674: CTLFLAG_PERMANENT,
675: CTLTYPE_NODE, "net", NULL,
676: NULL, 0, NULL, 0,
677: CTL_NET, CTL_EOL);
678: sysctl_createv(clog, 0, NULL, NULL,
679: CTLFLAG_PERMANENT,
680: CTLTYPE_NODE, "inet", NULL,
681: NULL, 0, NULL, 0,
682: CTL_NET, PF_INET, CTL_EOL);
683: sysctl_createv(clog, 0, NULL, NULL,
684: CTLFLAG_PERMANENT,
685: CTLTYPE_NODE, "raw",
686: SYSCTL_DESCR("Raw IPv4 settings"),
687: NULL, 0, NULL, 0,
688: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
689:
690: sysctl_createv(clog, 0, NULL, NULL,
691: CTLFLAG_PERMANENT,
1.86 ! atatat 692: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 693: SYSCTL_DESCR("Raw IPv4 control block list"),
694: sysctl_inpcblist, 0, &rawcbtable, 0,
695: CTL_NET, PF_INET, IPPROTO_RAW,
696: CTL_CREATE, CTL_EOL);
697: }
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