Annotation of src/sys/netinet/raw_ip.c, Revision 1.164.4.2
1.164.4.2! bouyer 1: /* $NetBSD: raw_ip.c,v 1.164.4.1 2017/12/21 21:08:13 snj 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:
1.121 rmind 63: /*
64: * Raw interface to IP protocol.
65: */
66:
1.59 lukem 67: #include <sys/cdefs.h>
1.164.4.2! bouyer 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.164.4.1 2017/12/21 21:08:13 snj Exp $");
1.40 scottr 69:
1.153 pooka 70: #ifdef _KERNEL_OPT
1.78 jonathan 71: #include "opt_inet.h"
1.109 christos 72: #include "opt_compat_netbsd.h"
1.45 thorpej 73: #include "opt_ipsec.h"
1.40 scottr 74: #include "opt_mrouting.h"
1.162 ozaki-r 75: #include "opt_net_mpsafe.h"
1.153 pooka 76: #endif
1.1 cgd 77:
1.7 mycroft 78: #include <sys/param.h>
1.84 atatat 79: #include <sys/sysctl.h>
1.7 mycroft 80: #include <sys/mbuf.h>
81: #include <sys/socket.h>
82: #include <sys/protosw.h>
83: #include <sys/socketvar.h>
84: #include <sys/errno.h>
1.13 mycroft 85: #include <sys/systm.h>
1.26 mycroft 86: #include <sys/proc.h>
1.89 elad 87: #include <sys/kauth.h>
1.1 cgd 88:
1.7 mycroft 89: #include <net/if.h>
1.1 cgd 90:
1.7 mycroft 91: #include <netinet/in.h>
92: #include <netinet/in_systm.h>
93: #include <netinet/ip.h>
94: #include <netinet/ip_var.h>
1.105 thorpej 95: #include <netinet/ip_private.h>
1.13 mycroft 96: #include <netinet/ip_mroute.h>
1.44 darrenr 97: #include <netinet/ip_icmp.h>
1.7 mycroft 98: #include <netinet/in_pcb.h>
1.87 yamt 99: #include <netinet/in_proto.h>
1.24 christos 100: #include <netinet/in_var.h>
101:
1.116 christos 102: #ifdef IPSEC
1.72 jonathan 103: #include <netipsec/ipsec.h>
1.106 thorpej 104: #include <netipsec/ipsec_var.h>
105: #include <netipsec/ipsec_private.h>
1.116 christos 106: #endif /* IPSEC */
1.72 jonathan 107:
1.109 christos 108: #ifdef COMPAT_50
109: #include <compat/sys/socket.h>
110: #endif
111:
1.20 mycroft 112: struct inpcbtable rawcbtable;
1.30 pk 113:
1.82 perry 114: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
115: struct in_addr, int, int, void (*)(struct inpcb *, int));
1.149 rtr 116: static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
1.139 rtr 117: static void rip_disconnect1(struct inpcb *);
1.13 mycroft 118:
1.110 pooka 119: static void sysctl_net_inet_raw_setup(struct sysctllog **);
120:
1.13 mycroft 121: /*
122: * Nominal space allocated to a raw ip socket.
123: */
124: #define RIPSNDQ 8192
125: #define RIPRCVQ 8192
1.1 cgd 126:
1.121 rmind 127: static u_long rip_sendspace = RIPSNDQ;
128: static u_long rip_recvspace = RIPRCVQ;
129:
1.1 cgd 130: /*
131: * Raw interface to IP protocol.
132: */
1.13 mycroft 133:
134: /*
135: * Initialize raw connection block q.
136: */
137: void
1.83 perry 138: rip_init(void)
1.13 mycroft 139: {
140:
1.110 pooka 141: sysctl_net_inet_raw_setup(NULL);
1.33 mycroft 142: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 143: }
144:
1.100 dyoung 145: static void
146: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
147: int hlen, struct mbuf *opts, struct mbuf *n)
148: {
149: if (last->inp_flags & INP_NOHEADER)
150: m_adj(n, hlen);
1.109 christos 151: if (last->inp_flags & INP_CONTROLOPTS
152: #ifdef SO_OTIMESTAMP
153: || last->inp_socket->so_options & SO_OTIMESTAMP
154: #endif
155: || last->inp_socket->so_options & SO_TIMESTAMP)
1.100 dyoung 156: ip_savecontrol(last, &opts, ip, n);
157: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
1.164.4.2! bouyer 158: soroverflow(last->inp_socket);
1.100 dyoung 159: m_freem(n);
160: if (opts)
161: m_freem(opts);
162: } else
163: sorwakeup(last->inp_socket);
164: }
165:
1.1 cgd 166: /*
167: * Setup generic address and protocol structures
168: * for raw_input routine, then pass them along with
169: * mbuf chain.
170: */
1.9 mycroft 171: void
1.24 christos 172: rip_input(struct mbuf *m, ...)
1.1 cgd 173: {
1.100 dyoung 174: int hlen, proto;
1.53 augustss 175: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 176: struct inpcb_hdr *inph;
1.53 augustss 177: struct inpcb *inp;
1.97 dyoung 178: struct inpcb *last = NULL;
179: struct mbuf *n, *opts = NULL;
1.32 mycroft 180: struct sockaddr_in ripsrc;
1.43 itojun 181: va_list ap;
182:
183: va_start(ap, m);
1.64 simonb 184: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 185: proto = va_arg(ap, int);
186: va_end(ap);
1.1 cgd 187:
1.97 dyoung 188: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 189:
190: /*
191: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 192: * XXX to have the header length subtracted, and in host order.
193: * XXX ip_off is also expected to be host order.
1.42 thorpej 194: */
1.100 dyoung 195: hlen = ip->ip_hl << 2;
196: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 197: NTOHS(ip->ip_off);
1.32 mycroft 198:
1.117 christos 199: TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75 itojun 200: inp = (struct inpcb *)inph;
201: if (inp->inp_af != AF_INET)
202: continue;
1.43 itojun 203: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 204: continue;
1.32 mycroft 205: if (!in_nullhost(inp->inp_laddr) &&
206: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 207: continue;
1.32 mycroft 208: if (!in_nullhost(inp->inp_faddr) &&
209: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 210: continue;
1.97 dyoung 211: if (last == NULL)
212: ;
1.116 christos 213: #if defined(IPSEC)
1.97 dyoung 214: /* check AH/ESP integrity. */
1.124 christos 215: else if (ipsec_used &&
1.164 ozaki-r 216: ipsec4_in_reject(m, last)) {
1.106 thorpej 217: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97 dyoung 218: /* do not inject data to pcb */
219: }
220: #endif /*IPSEC*/
1.99 dyoung 221: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100 dyoung 222: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
223: n);
1.97 dyoung 224: opts = NULL;
1.13 mycroft 225: }
1.36 thorpej 226: last = inp;
1.13 mycroft 227: }
1.116 christos 228: #if defined(IPSEC)
1.55 itojun 229: /* check AH/ESP integrity. */
1.124 christos 230: if (ipsec_used && last != NULL
1.164 ozaki-r 231: && ipsec4_in_reject(m, last)) {
1.55 itojun 232: m_freem(m);
1.106 thorpej 233: IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105 thorpej 234: IP_STATDEC(IP_STAT_DELIVERED);
1.55 itojun 235: /* do not inject data to pcb */
236: } else
237: #endif /*IPSEC*/
1.100 dyoung 238: if (last != NULL)
239: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
1.156 riastrad 240: else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 241: uint64_t *ips;
242:
1.97 dyoung 243: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
244: 0, 0);
1.105 thorpej 245: ips = IP_STAT_GETREF();
246: ips[IP_STAT_NOPROTO]++;
247: ips[IP_STAT_DELIVERED]--;
248: IP_STAT_PUTREF();
1.97 dyoung 249: } else
250: m_freem(m);
1.43 itojun 251: return;
1.60 itojun 252: }
253:
254: int
1.83 perry 255: rip_pcbnotify(struct inpcbtable *table,
256: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
257: void (*notify)(struct inpcb *, int))
1.60 itojun 258: {
1.117 christos 259: struct inpcb_hdr *inph, *ninph;
1.60 itojun 260: int nmatch;
261:
262: nmatch = 0;
1.117 christos 263: TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
264: struct inpcb *inp = (struct inpcb *)inph;
1.75 itojun 265: if (inp->inp_af != AF_INET)
266: continue;
1.60 itojun 267: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
268: continue;
269: if (in_hosteq(inp->inp_faddr, faddr) &&
270: in_hosteq(inp->inp_laddr, laddr)) {
271: (*notify)(inp, errno);
272: nmatch++;
273: }
274: }
275:
276: return nmatch;
277: }
278:
279: void *
1.95 dyoung 280: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 281: {
282: struct ip *ip = v;
1.82 perry 283: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 284: int errno;
285:
286: if (sa->sa_family != AF_INET ||
287: sa->sa_len != sizeof(struct sockaddr_in))
288: return NULL;
289: if ((unsigned)cmd >= PRC_NCMDS)
290: return NULL;
291: errno = inetctlerrmap[cmd];
292: if (PRC_IS_REDIRECT(cmd))
293: notify = in_rtchange, ip = 0;
294: else if (cmd == PRC_HOSTDEAD)
295: ip = 0;
296: else if (errno == 0)
297: return NULL;
298: if (ip) {
1.95 dyoung 299: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 300: ip->ip_src, ip->ip_p, errno, notify);
301:
302: /* XXX mapped address case */
303: } else
1.95 dyoung 304: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 305: notify);
306: return NULL;
1.1 cgd 307: }
308:
309: /*
310: * Generate IP header and pass packet to ip_output.
311: * Tack on options user may have setup with control call.
312: */
1.9 mycroft 313: int
1.164.4.1 snj 314: rip_output(struct mbuf *m, struct inpcb *inp, struct mbuf *control,
315: struct lwp *l)
1.24 christos 316: {
1.53 augustss 317: struct ip *ip;
1.10 mycroft 318: struct mbuf *opts;
1.164.4.1 snj 319: struct ip_pktopts pktopts;
320: kauth_cred_t cred;
321: int error, flags;
322:
323: flags = (inp->inp_socket->so_options & SO_DONTROUTE) |
324: IP_ALLOWBROADCAST | IP_RETURNMTU;
325:
326: if (l == NULL)
327: cred = NULL;
328: else
329: cred = l->l_cred;
330:
331: /* Setup IP outgoing packet options */
332: memset(&pktopts, 0, sizeof(pktopts));
333: error = ip_setpktopts(control, &pktopts, &flags, inp, cred);
334: if (control != NULL)
335: m_freem(control);
336: if (error != 0)
337: goto release;
1.1 cgd 338:
339: /*
340: * If the user handed us a complete IP packet, use it.
341: * Otherwise, allocate an mbuf for a header and fill it in.
342: */
1.13 mycroft 343: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 344: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
1.164.4.1 snj 345: error = EMSGSIZE;
346: goto release;
1.35 thorpej 347: }
1.68 itojun 348: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
1.164.4.1 snj 349: if (!m) {
350: error = ENOBUFS;
351: goto release;
352: }
1.1 cgd 353: ip = mtod(m, struct ip *);
354: ip->ip_tos = 0;
1.62 itojun 355: ip->ip_off = htons(0);
1.13 mycroft 356: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 357: ip->ip_len = htons(m->m_pkthdr.len);
1.164.4.1 snj 358: ip->ip_src = pktopts.ippo_laddr.sin_addr;
1.27 mycroft 359: ip->ip_dst = inp->inp_faddr;
1.1 cgd 360: ip->ip_ttl = MAXTTL;
1.13 mycroft 361: opts = inp->inp_options;
362: } else {
1.35 thorpej 363: if (m->m_pkthdr.len > IP_MAXPACKET) {
1.164.4.1 snj 364: error = EMSGSIZE;
365: goto release;
1.35 thorpej 366: }
1.13 mycroft 367: ip = mtod(m, struct ip *);
1.65 thorpej 368:
369: /*
370: * If the mbuf is read-only, we need to allocate
371: * a new mbuf for the header, since we need to
372: * modify the header.
373: */
374: if (M_READONLY(m)) {
375: int hlen = ip->ip_hl << 2;
376:
377: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
1.164.4.1 snj 378: if (m == NULL) {
379: error = ENOMEM; /* XXX */
380: goto release;
381: }
1.65 thorpej 382: ip = mtod(m, struct ip *);
383: }
384:
1.62 itojun 385: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 386: if (m->m_pkthdr.len != ip->ip_len) {
1.164.4.1 snj 387: error = EINVAL;
388: goto release;
1.38 mycroft 389: }
1.62 itojun 390: HTONS(ip->ip_len);
391: HTONS(ip->ip_off);
1.103 matt 392: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
393: flags |= IP_NOIPNEWID;
1.13 mycroft 394: opts = NULL;
395: /* XXX prevent ip_output from overwriting header fields */
396: flags |= IP_RAWOUTPUT;
1.105 thorpej 397: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 398: }
1.123 rmind 399:
400: /*
401: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
402: * will be stored in inp_errormtu.
403: */
1.164.4.1 snj 404: return ip_output(m, opts, &inp->inp_route, flags, pktopts.ippo_imo,
405: inp);
406:
407: release:
408: if (m != NULL)
409: m_freem(m);
410: return error;
1.1 cgd 411: }
412:
413: /*
414: * Raw IP socket option processing.
415: */
1.9 mycroft 416: int
1.108 plunky 417: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 418: {
1.53 augustss 419: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 420: int error = 0;
1.108 plunky 421: int optval;
1.1 cgd 422:
1.108 plunky 423: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 424: if (op == PRCO_GETOPT) {
1.108 plunky 425: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
426: error = sockopt_set(sopt, &optval, sizeof(optval));
427: } else if (op == PRCO_SETOPT) {
428: error = sockopt_getint(sopt, &optval);
429: if (error)
430: goto out;
431: if (optval) {
432: inp->inp_flags &= ~INP_HDRINCL;
433: inp->inp_flags |= INP_NOHEADER;
434: } else
435: inp->inp_flags &= ~INP_NOHEADER;
436: }
437: goto out;
438: } else if (sopt->sopt_level != IPPROTO_IP)
439: return ip_ctloutput(op, so, sopt);
1.100 dyoung 440:
441: switch (op) {
1.31 mycroft 442:
443: case PRCO_SETOPT:
1.108 plunky 444: switch (sopt->sopt_name) {
1.31 mycroft 445: case IP_HDRINCL:
1.108 plunky 446: error = sockopt_getint(sopt, &optval);
447: if (error)
448: break;
449: if (optval)
1.100 dyoung 450: inp->inp_flags |= INP_HDRINCL;
451: else
452: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 453: break;
1.31 mycroft 454:
455: #ifdef MROUTING
456: case MRT_INIT:
457: case MRT_DONE:
458: case MRT_ADD_VIF:
459: case MRT_DEL_VIF:
460: case MRT_ADD_MFC:
461: case MRT_DEL_MFC:
462: case MRT_ASSERT:
1.81 manu 463: case MRT_API_CONFIG:
464: case MRT_ADD_BW_UPCALL:
465: case MRT_DEL_BW_UPCALL:
1.108 plunky 466: error = ip_mrouter_set(so, sopt);
1.31 mycroft 467: break;
468: #endif
469:
470: default:
1.108 plunky 471: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 472: break;
1.13 mycroft 473: }
474: break;
1.1 cgd 475:
1.31 mycroft 476: case PRCO_GETOPT:
1.108 plunky 477: switch (sopt->sopt_name) {
1.31 mycroft 478: case IP_HDRINCL:
1.108 plunky 479: optval = inp->inp_flags & INP_HDRINCL;
480: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 481: break;
482:
1.6 hpeyerl 483: #ifdef MROUTING
1.31 mycroft 484: case MRT_VERSION:
485: case MRT_ASSERT:
1.81 manu 486: case MRT_API_SUPPORT:
487: case MRT_API_CONFIG:
1.108 plunky 488: error = ip_mrouter_get(so, sopt);
1.18 mycroft 489: break;
1.31 mycroft 490: #endif
491:
1.18 mycroft 492: default:
1.108 plunky 493: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 494: break;
495: }
1.31 mycroft 496: break;
1.1 cgd 497: }
1.108 plunky 498: out:
1.100 dyoung 499: return error;
1.1 cgd 500: }
501:
1.27 mycroft 502: int
1.149 rtr 503: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27 mycroft 504: {
505:
1.158 ozaki-r 506: if (IFNET_READER_EMPTY())
1.27 mycroft 507: return (EADDRNOTAVAIL);
1.115 joerg 508: if (addr->sin_family != AF_INET)
1.27 mycroft 509: return (EAFNOSUPPORT);
510: inp->inp_faddr = addr->sin_addr;
511: return (0);
512: }
513:
1.139 rtr 514: static void
515: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 516: {
517:
1.32 mycroft 518: inp->inp_faddr = zeroin_addr;
1.27 mycroft 519: }
520:
1.121 rmind 521: static int
522: rip_attach(struct socket *so, int proto)
523: {
524: struct inpcb *inp;
525: int error;
526:
527: KASSERT(sotoinpcb(so) == NULL);
528: sosetlock(so);
529:
530: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
531: error = soreserve(so, rip_sendspace, rip_recvspace);
532: if (error) {
533: return error;
534: }
535: }
536:
537: error = in_pcballoc(so, &rawcbtable);
538: if (error) {
539: return error;
540: }
541: inp = sotoinpcb(so);
542: inp->inp_ip.ip_p = proto;
543: KASSERT(solocked(so));
544:
545: return 0;
546: }
1.13 mycroft 547:
1.121 rmind 548: static void
549: rip_detach(struct socket *so)
1.1 cgd 550: {
1.53 augustss 551: struct inpcb *inp;
1.121 rmind 552:
553: KASSERT(solocked(so));
554: inp = sotoinpcb(so);
555: KASSERT(inp != NULL);
556:
1.13 mycroft 557: #ifdef MROUTING
1.6 hpeyerl 558: extern struct socket *ip_mrouter;
1.121 rmind 559: if (so == ip_mrouter) {
560: ip_mrouter_done();
561: }
1.6 hpeyerl 562: #endif
1.121 rmind 563: in_pcbdetach(inp);
564: }
565:
1.125 rtr 566: static int
1.148 rtr 567: rip_accept(struct socket *so, struct sockaddr *nam)
1.133 rtr 568: {
569: KASSERT(solocked(so));
570:
571: panic("rip_accept");
1.136 rtr 572:
573: return EOPNOTSUPP;
574: }
575:
576: static int
1.147 rtr 577: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136 rtr 578: {
579: struct inpcb *inp = sotoinpcb(so);
1.147 rtr 580: struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136 rtr 581: int error = 0;
1.159 ozaki-r 582: int s, ss;
583: struct ifaddr *ifa;
1.136 rtr 584:
585: KASSERT(solocked(so));
586: KASSERT(inp != NULL);
587: KASSERT(nam != NULL);
588:
1.147 rtr 589: if (addr->sin_len != sizeof(*addr))
590: return EINVAL;
591:
1.136 rtr 592: s = splsoftnet();
1.158 ozaki-r 593: if (IFNET_READER_EMPTY()) {
1.136 rtr 594: error = EADDRNOTAVAIL;
595: goto release;
596: }
597: if (addr->sin_family != AF_INET) {
598: error = EAFNOSUPPORT;
599: goto release;
600: }
1.159 ozaki-r 601: ss = pserialize_read_enter();
602: if ((ifa = ifa_ifwithaddr(sintosa(addr))) == NULL &&
1.151 roy 603: !in_nullhost(addr->sin_addr))
604: {
1.159 ozaki-r 605: pserialize_read_exit(ss);
1.136 rtr 606: error = EADDRNOTAVAIL;
607: goto release;
608: }
1.161 roy 609: if (ifa && (ifatoia(ifa))->ia4_flags & IN6_IFF_DUPLICATED) {
1.159 ozaki-r 610: pserialize_read_exit(ss);
1.151 roy 611: error = EADDRNOTAVAIL;
612: goto release;
613: }
1.159 ozaki-r 614: pserialize_read_exit(ss);
1.151 roy 615:
1.136 rtr 616: inp->inp_laddr = addr->sin_addr;
617:
618: release:
619: splx(s);
620: return error;
621: }
622:
623: static int
1.142 rtr 624: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 625: {
626: KASSERT(solocked(so));
627:
1.133 rtr 628: return EOPNOTSUPP;
629: }
630:
631: static int
1.152 rtr 632: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137 rtr 633: {
634: struct inpcb *inp = sotoinpcb(so);
635: int error = 0;
636: int s;
637:
638: KASSERT(solocked(so));
639: KASSERT(inp != NULL);
640: KASSERT(nam != NULL);
641:
642: s = splsoftnet();
1.152 rtr 643: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137 rtr 644: if (! error)
645: soisconnected(so);
1.140 rtr 646: splx(s);
1.137 rtr 647:
648: return error;
649: }
650:
1.139 rtr 651: static int
1.145 rtr 652: rip_connect2(struct socket *so, struct socket *so2)
653: {
654: KASSERT(solocked(so));
655:
656: return EOPNOTSUPP;
657: }
658:
659: static int
1.139 rtr 660: rip_disconnect(struct socket *so)
661: {
662: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 663: int s;
1.139 rtr 664:
665: KASSERT(solocked(so));
666: KASSERT(inp != NULL);
667:
1.140 rtr 668: s = splsoftnet();
1.139 rtr 669: soisdisconnected(so);
670: rip_disconnect1(inp);
1.140 rtr 671: splx(s);
672:
1.139 rtr 673: return 0;
674: }
675:
676: static int
677: rip_shutdown(struct socket *so)
678: {
1.140 rtr 679: int s;
680:
1.139 rtr 681: KASSERT(solocked(so));
682:
683: /*
684: * Mark the connection as being incapable of further input.
685: */
1.140 rtr 686: s = splsoftnet();
1.139 rtr 687: socantsendmore(so);
1.140 rtr 688: splx(s);
689:
1.139 rtr 690: return 0;
691: }
692:
693: static int
694: rip_abort(struct socket *so)
695: {
696: KASSERT(solocked(so));
697:
698: panic("rip_abort");
699:
700: return EOPNOTSUPP;
701: }
1.137 rtr 702:
703: static int
1.127 rtr 704: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 705: {
1.127 rtr 706: return in_control(so, cmd, nam, ifp);
1.125 rtr 707: }
708:
1.128 rtr 709: static int
710: rip_stat(struct socket *so, struct stat *ub)
711: {
1.131 rtr 712: KASSERT(solocked(so));
713:
1.130 rtr 714: /* stat: don't bother with a blocksize. */
715: return 0;
1.128 rtr 716: }
717:
1.132 rtr 718: static int
1.148 rtr 719: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 720: {
1.140 rtr 721: int s;
722:
1.134 rtr 723: KASSERT(solocked(so));
1.132 rtr 724: KASSERT(sotoinpcb(so) != NULL);
725: KASSERT(nam != NULL);
726:
1.140 rtr 727: s = splsoftnet();
1.148 rtr 728: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 729: splx(s);
730:
1.132 rtr 731: return 0;
732: }
733:
734: static int
1.148 rtr 735: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 736: {
1.140 rtr 737: int s;
738:
1.134 rtr 739: KASSERT(solocked(so));
1.132 rtr 740: KASSERT(sotoinpcb(so) != NULL);
741: KASSERT(nam != NULL);
742:
1.140 rtr 743: s = splsoftnet();
1.148 rtr 744: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 745: splx(s);
746:
1.132 rtr 747: return 0;
748: }
749:
1.135 rtr 750: static int
1.144 rtr 751: rip_rcvd(struct socket *so, int flags, struct lwp *l)
752: {
753: KASSERT(solocked(so));
754:
755: return EOPNOTSUPP;
756: }
757:
758: static int
1.135 rtr 759: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
760: {
761: KASSERT(solocked(so));
762:
763: return EOPNOTSUPP;
764: }
765:
766: static int
1.152 rtr 767: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143 rtr 768: struct mbuf *control, struct lwp *l)
769: {
770: struct inpcb *inp = sotoinpcb(so);
771: int error = 0;
772: int s;
773:
774: KASSERT(solocked(so));
775: KASSERT(inp != NULL);
776: KASSERT(m != NULL);
777:
778: /*
779: * Ship a packet out. The appropriate raw output
780: * routine handles any massaging necessary.
781: */
782: s = splsoftnet();
783: if (nam) {
784: if ((so->so_state & SS_ISCONNECTED) != 0) {
785: error = EISCONN;
786: goto die;
787: }
1.152 rtr 788: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.164.4.1 snj 789: if (error)
790: goto die;
1.143 rtr 791: } else {
792: if ((so->so_state & SS_ISCONNECTED) == 0) {
793: error = ENOTCONN;
794: goto die;
795: }
796: }
1.164.4.1 snj 797: error = rip_output(m, inp, control, l);
798: m = NULL;
799: control = NULL;
1.143 rtr 800: if (nam)
801: rip_disconnect1(inp);
1.164.4.1 snj 802: die:
803: if (m != NULL)
804: m_freem(m);
805: if (control != NULL)
806: m_freem(control);
1.143 rtr 807:
808: splx(s);
809: return error;
810: }
811:
812: static int
1.135 rtr 813: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
814: {
815: KASSERT(solocked(so));
816:
817: m_freem(m);
818: m_freem(control);
819:
820: return EOPNOTSUPP;
821: }
822:
1.145 rtr 823: static int
824: rip_purgeif(struct socket *so, struct ifnet *ifp)
825: {
826: int s;
827:
828: s = splsoftnet();
829: mutex_enter(softnet_lock);
830: in_pcbpurgeif0(&rawcbtable, ifp);
1.162 ozaki-r 831: #ifdef NET_MPSAFE
832: mutex_exit(softnet_lock);
833: #endif
1.145 rtr 834: in_purgeif(ifp);
1.162 ozaki-r 835: #ifdef NET_MPSAFE
836: mutex_enter(softnet_lock);
837: #endif
1.145 rtr 838: in_pcbpurgeif(&rawcbtable, ifp);
839: mutex_exit(softnet_lock);
840: splx(s);
841:
842: return 0;
843: }
844:
1.122 rmind 845: PR_WRAP_USRREQS(rip)
846: #define rip_attach rip_attach_wrapper
847: #define rip_detach rip_detach_wrapper
1.133 rtr 848: #define rip_accept rip_accept_wrapper
1.136 rtr 849: #define rip_bind rip_bind_wrapper
850: #define rip_listen rip_listen_wrapper
1.137 rtr 851: #define rip_connect rip_connect_wrapper
1.145 rtr 852: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 853: #define rip_disconnect rip_disconnect_wrapper
854: #define rip_shutdown rip_shutdown_wrapper
855: #define rip_abort rip_abort_wrapper
1.125 rtr 856: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 857: #define rip_stat rip_stat_wrapper
1.132 rtr 858: #define rip_peeraddr rip_peeraddr_wrapper
859: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 860: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 861: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 862: #define rip_send rip_send_wrapper
1.135 rtr 863: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 864: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 865:
866: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 867: .pr_attach = rip_attach,
868: .pr_detach = rip_detach,
1.133 rtr 869: .pr_accept = rip_accept,
1.136 rtr 870: .pr_bind = rip_bind,
871: .pr_listen = rip_listen,
1.137 rtr 872: .pr_connect = rip_connect,
1.145 rtr 873: .pr_connect2 = rip_connect2,
1.139 rtr 874: .pr_disconnect = rip_disconnect,
875: .pr_shutdown = rip_shutdown,
876: .pr_abort = rip_abort,
1.125 rtr 877: .pr_ioctl = rip_ioctl,
1.128 rtr 878: .pr_stat = rip_stat,
1.132 rtr 879: .pr_peeraddr = rip_peeraddr,
880: .pr_sockaddr = rip_sockaddr,
1.144 rtr 881: .pr_rcvd = rip_rcvd,
1.135 rtr 882: .pr_recvoob = rip_recvoob,
1.143 rtr 883: .pr_send = rip_send,
1.135 rtr 884: .pr_sendoob = rip_sendoob,
1.145 rtr 885: .pr_purgeif = rip_purgeif,
1.120 rmind 886: };
887:
1.110 pooka 888: static void
889: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 890: {
891:
892: sysctl_createv(clog, 0, NULL, NULL,
893: CTLFLAG_PERMANENT,
894: CTLTYPE_NODE, "inet", NULL,
895: NULL, 0, NULL, 0,
896: CTL_NET, PF_INET, CTL_EOL);
897: sysctl_createv(clog, 0, NULL, NULL,
898: CTLFLAG_PERMANENT,
899: CTLTYPE_NODE, "raw",
900: SYSCTL_DESCR("Raw IPv4 settings"),
901: NULL, 0, NULL, 0,
902: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
903:
904: sysctl_createv(clog, 0, NULL, NULL,
905: CTLFLAG_PERMANENT,
1.86 atatat 906: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 907: SYSCTL_DESCR("Raw IPv4 control block list"),
908: sysctl_inpcblist, 0, &rawcbtable, 0,
909: CTL_NET, PF_INET, IPPROTO_RAW,
910: CTL_CREATE, CTL_EOL);
911: }
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