Annotation of src/sys/netinet/raw_ip.c, Revision 1.103.6.2
1.103.6.1 mjf 1: /* $NetBSD$ */
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>
1.103.6.1 mjf 64: __KERNEL_RCSID(0, "$NetBSD$");
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>
1.103.6.1 mjf 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>
1.103.6.1 mjf 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>
1.103.6.1 mjf 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)) {
1.103.6.1 mjf 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);
1.103.6.1 mjf 220: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
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) {
1.103.6.1 mjf 228: uint64_t *ips;
229:
1.97 dyoung 230: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
231: 0, 0);
1.103.6.1 mjf 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;
1.103.6.1 mjf 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
1.103.6.2! mjf 383: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 384: {
1.53 augustss 385: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 386: int error = 0;
1.103.6.2! mjf 387: int optval;
1.1 cgd 388:
1.103.6.2! mjf 389: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 390: if (op == PRCO_GETOPT) {
1.103.6.2! mjf 391: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
! 392: error = sockopt_set(sopt, &optval, sizeof(optval));
! 393: } else if (op == PRCO_SETOPT) {
! 394: error = sockopt_getint(sopt, &optval);
! 395: if (error)
! 396: goto out;
! 397: if (optval) {
! 398: inp->inp_flags &= ~INP_HDRINCL;
! 399: inp->inp_flags |= INP_NOHEADER;
! 400: } else
! 401: inp->inp_flags &= ~INP_NOHEADER;
! 402: }
! 403: goto out;
! 404: } else if (sopt->sopt_level != IPPROTO_IP)
! 405: return ip_ctloutput(op, so, sopt);
1.100 dyoung 406:
407: switch (op) {
1.31 mycroft 408:
409: case PRCO_SETOPT:
1.103.6.2! mjf 410: switch (sopt->sopt_name) {
1.31 mycroft 411: case IP_HDRINCL:
1.103.6.2! mjf 412: error = sockopt_getint(sopt, &optval);
! 413: if (error)
! 414: break;
! 415: if (optval)
1.100 dyoung 416: inp->inp_flags |= INP_HDRINCL;
417: else
418: inp->inp_flags &= ~INP_HDRINCL;
1.103.6.2! mjf 419: break;
1.31 mycroft 420:
421: #ifdef MROUTING
422: case MRT_INIT:
423: case MRT_DONE:
424: case MRT_ADD_VIF:
425: case MRT_DEL_VIF:
426: case MRT_ADD_MFC:
427: case MRT_DEL_MFC:
428: case MRT_ASSERT:
1.81 manu 429: case MRT_API_CONFIG:
430: case MRT_ADD_BW_UPCALL:
431: case MRT_DEL_BW_UPCALL:
1.103.6.2! mjf 432: error = ip_mrouter_set(so, sopt);
1.31 mycroft 433: break;
434: #endif
435:
436: default:
1.103.6.2! mjf 437: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 438: break;
1.13 mycroft 439: }
440: break;
1.1 cgd 441:
1.31 mycroft 442: case PRCO_GETOPT:
1.103.6.2! mjf 443: switch (sopt->sopt_name) {
1.31 mycroft 444: case IP_HDRINCL:
1.103.6.2! mjf 445: optval = inp->inp_flags & INP_HDRINCL;
! 446: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 447: break;
448:
1.6 hpeyerl 449: #ifdef MROUTING
1.31 mycroft 450: case MRT_VERSION:
451: case MRT_ASSERT:
1.81 manu 452: case MRT_API_SUPPORT:
453: case MRT_API_CONFIG:
1.103.6.2! mjf 454: error = ip_mrouter_get(so, sopt);
1.18 mycroft 455: break;
1.31 mycroft 456: #endif
457:
1.18 mycroft 458: default:
1.103.6.2! mjf 459: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 460: break;
461: }
1.31 mycroft 462: break;
1.1 cgd 463: }
1.103.6.2! mjf 464: out:
1.100 dyoung 465: return error;
1.1 cgd 466: }
467:
1.27 mycroft 468: int
1.83 perry 469: rip_bind(struct inpcb *inp, struct mbuf *nam)
1.29 mycroft 470: {
471: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
472:
473: if (nam->m_len != sizeof(*addr))
474: return (EINVAL);
1.58 matt 475: if (TAILQ_FIRST(&ifnet) == 0)
1.29 mycroft 476: return (EADDRNOTAVAIL);
477: if (addr->sin_family != AF_INET &&
478: addr->sin_family != AF_IMPLINK)
479: return (EAFNOSUPPORT);
1.32 mycroft 480: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 481: ifa_ifwithaddr(sintosa(addr)) == 0)
482: return (EADDRNOTAVAIL);
483: inp->inp_laddr = addr->sin_addr;
484: return (0);
485: }
486:
487: int
1.83 perry 488: rip_connect(struct inpcb *inp, struct mbuf *nam)
1.27 mycroft 489: {
490: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
491:
492: if (nam->m_len != sizeof(*addr))
493: return (EINVAL);
1.58 matt 494: if (TAILQ_FIRST(&ifnet) == 0)
1.27 mycroft 495: return (EADDRNOTAVAIL);
496: if (addr->sin_family != AF_INET &&
497: addr->sin_family != AF_IMPLINK)
498: return (EAFNOSUPPORT);
499: inp->inp_faddr = addr->sin_addr;
500: return (0);
501: }
502:
503: void
1.83 perry 504: rip_disconnect(struct inpcb *inp)
1.27 mycroft 505: {
506:
1.32 mycroft 507: inp->inp_faddr = zeroin_addr;
1.27 mycroft 508: }
509:
1.13 mycroft 510: u_long rip_sendspace = RIPSNDQ;
511: u_long rip_recvspace = RIPRCVQ;
512:
1.1 cgd 513: /*ARGSUSED*/
1.9 mycroft 514: int
1.83 perry 515: rip_usrreq(struct socket *so, int req,
1.88 christos 516: struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l)
1.1 cgd 517: {
1.53 augustss 518: struct inpcb *inp;
1.27 mycroft 519: int s;
1.53 augustss 520: int error = 0;
1.13 mycroft 521: #ifdef MROUTING
1.6 hpeyerl 522: extern struct socket *ip_mrouter;
523: #endif
1.27 mycroft 524:
1.22 pk 525: if (req == PRU_CONTROL)
1.96 christos 526: return (in_control(so, (long)m, (void *)nam,
1.90 ad 527: (struct ifnet *)control, l));
1.49 thorpej 528:
1.93 tls 529: s = splsoftnet();
530:
1.50 thorpej 531: if (req == PRU_PURGEIF) {
1.103.6.1 mjf 532: mutex_enter(softnet_lock);
1.56 itojun 533: in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control);
1.50 thorpej 534: in_purgeif((struct ifnet *)control);
535: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.103.6.1 mjf 536: mutex_exit(softnet_lock);
1.93 tls 537: splx(s);
1.49 thorpej 538: return (0);
539: }
1.22 pk 540:
1.27 mycroft 541: inp = sotoinpcb(so);
1.28 mycroft 542: #ifdef DIAGNOSTIC
543: if (req != PRU_SEND && req != PRU_SENDOOB && control)
544: panic("rip_usrreq: unexpected control mbuf");
545: #endif
1.27 mycroft 546: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 547: error = EINVAL;
548: goto release;
549: }
550:
1.1 cgd 551: switch (req) {
552:
553: case PRU_ATTACH:
1.103.6.1 mjf 554: sosetlock(so);
1.27 mycroft 555: if (inp != 0) {
556: error = EISCONN;
557: break;
558: }
1.94 elad 559:
560: if (l == NULL) {
1.13 mycroft 561: error = EACCES;
562: break;
563: }
1.94 elad 564:
565: /* XXX: raw socket permissions are checked in socreate() */
566:
1.27 mycroft 567: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
568: error = soreserve(so, rip_sendspace, rip_recvspace);
569: if (error)
570: break;
571: }
572: error = in_pcballoc(so, &rawcbtable);
573: if (error)
1.13 mycroft 574: break;
1.27 mycroft 575: inp = sotoinpcb(so);
1.17 cgd 576: inp->inp_ip.ip_p = (long)nam;
1.1 cgd 577: break;
578:
579: case PRU_DETACH:
1.13 mycroft 580: #ifdef MROUTING
1.6 hpeyerl 581: if (so == ip_mrouter)
582: ip_mrouter_done();
583: #endif
1.13 mycroft 584: in_pcbdetach(inp);
1.1 cgd 585: break;
586:
587: case PRU_BIND:
1.29 mycroft 588: error = rip_bind(inp, nam);
1.27 mycroft 589: break;
590:
591: case PRU_LISTEN:
592: error = EOPNOTSUPP;
593: break;
594:
595: case PRU_CONNECT:
596: error = rip_connect(inp, nam);
597: if (error)
1.13 mycroft 598: break;
1.1 cgd 599: soisconnected(so);
1.13 mycroft 600: break;
601:
602: case PRU_CONNECT2:
603: error = EOPNOTSUPP;
604: break;
605:
1.27 mycroft 606: case PRU_DISCONNECT:
607: soisdisconnected(so);
608: rip_disconnect(inp);
609: break;
610:
1.13 mycroft 611: /*
612: * Mark the connection as being incapable of further input.
613: */
614: case PRU_SHUTDOWN:
615: socantsendmore(so);
616: break;
617:
1.27 mycroft 618: case PRU_RCVD:
619: error = EOPNOTSUPP;
620: break;
621:
1.13 mycroft 622: /*
623: * Ship a packet out. The appropriate raw output
624: * routine handles any massaging necessary.
625: */
626: case PRU_SEND:
1.28 mycroft 627: if (control && control->m_len) {
628: m_freem(control);
629: m_freem(m);
630: error = EINVAL;
631: break;
632: }
633: {
1.27 mycroft 634: if (nam) {
635: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 636: error = EISCONN;
1.28 mycroft 637: goto die;
1.13 mycroft 638: }
1.27 mycroft 639: error = rip_connect(inp, nam);
640: if (error) {
1.28 mycroft 641: die:
1.27 mycroft 642: m_freem(m);
643: break;
644: }
1.13 mycroft 645: } else {
1.27 mycroft 646: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 647: error = ENOTCONN;
1.28 mycroft 648: goto die;
1.13 mycroft 649: }
650: }
1.27 mycroft 651: error = rip_output(m, inp);
652: if (nam)
653: rip_disconnect(inp);
1.28 mycroft 654: }
1.13 mycroft 655: break;
656:
657: case PRU_SENSE:
658: /*
659: * stat: don't bother with a blocksize.
660: */
1.27 mycroft 661: splx(s);
1.1 cgd 662: return (0);
1.13 mycroft 663:
664: case PRU_RCVOOB:
1.27 mycroft 665: error = EOPNOTSUPP;
666: break;
667:
1.13 mycroft 668: case PRU_SENDOOB:
1.28 mycroft 669: m_freem(control);
1.27 mycroft 670: m_freem(m);
1.13 mycroft 671: error = EOPNOTSUPP;
672: break;
673:
674: case PRU_SOCKADDR:
675: in_setsockaddr(inp, nam);
676: break;
677:
678: case PRU_PEERADDR:
679: in_setpeeraddr(inp, nam);
680: break;
681:
682: default:
683: panic("rip_usrreq");
1.1 cgd 684: }
1.27 mycroft 685:
1.22 pk 686: release:
1.27 mycroft 687: splx(s);
1.1 cgd 688: return (error);
689: }
1.84 atatat 690:
691: SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup")
692: {
693:
694: sysctl_createv(clog, 0, NULL, NULL,
695: CTLFLAG_PERMANENT,
696: CTLTYPE_NODE, "net", NULL,
697: NULL, 0, NULL, 0,
698: CTL_NET, CTL_EOL);
699: sysctl_createv(clog, 0, NULL, NULL,
700: CTLFLAG_PERMANENT,
701: CTLTYPE_NODE, "inet", NULL,
702: NULL, 0, NULL, 0,
703: CTL_NET, PF_INET, CTL_EOL);
704: sysctl_createv(clog, 0, NULL, NULL,
705: CTLFLAG_PERMANENT,
706: CTLTYPE_NODE, "raw",
707: SYSCTL_DESCR("Raw IPv4 settings"),
708: NULL, 0, NULL, 0,
709: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
710:
711: sysctl_createv(clog, 0, NULL, NULL,
712: CTLFLAG_PERMANENT,
1.86 atatat 713: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 714: SYSCTL_DESCR("Raw IPv4 control block list"),
715: sysctl_inpcblist, 0, &rawcbtable, 0,
716: CTL_NET, PF_INET, IPPROTO_RAW,
717: CTL_CREATE, CTL_EOL);
718: }
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