Annotation of src/sys/netinet/raw_ip.c, Revision 1.175
1.175 ! maxv 1: /* $NetBSD: raw_ip.c,v 1.174 2018/04/12 07:28:10 maxv 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>
1.175 ! maxv 68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.174 2018/04/12 07:28:10 maxv Exp $");
1.40 scottr 69:
1.153 pooka 70: #ifdef _KERNEL_OPT
1.78 jonathan 71: #include "opt_inet.h"
1.45 thorpej 72: #include "opt_ipsec.h"
1.40 scottr 73: #include "opt_mrouting.h"
1.162 ozaki-r 74: #include "opt_net_mpsafe.h"
1.153 pooka 75: #endif
1.1 cgd 76:
1.7 mycroft 77: #include <sys/param.h>
1.84 atatat 78: #include <sys/sysctl.h>
1.7 mycroft 79: #include <sys/mbuf.h>
80: #include <sys/socket.h>
81: #include <sys/protosw.h>
82: #include <sys/socketvar.h>
83: #include <sys/errno.h>
1.13 mycroft 84: #include <sys/systm.h>
1.26 mycroft 85: #include <sys/proc.h>
1.89 elad 86: #include <sys/kauth.h>
1.1 cgd 87:
1.7 mycroft 88: #include <net/if.h>
1.1 cgd 89:
1.7 mycroft 90: #include <netinet/in.h>
91: #include <netinet/in_systm.h>
92: #include <netinet/ip.h>
93: #include <netinet/ip_var.h>
1.105 thorpej 94: #include <netinet/ip_private.h>
1.13 mycroft 95: #include <netinet/ip_mroute.h>
1.44 darrenr 96: #include <netinet/ip_icmp.h>
1.7 mycroft 97: #include <netinet/in_pcb.h>
1.87 yamt 98: #include <netinet/in_proto.h>
1.24 christos 99: #include <netinet/in_var.h>
100:
1.116 christos 101: #ifdef IPSEC
1.72 jonathan 102: #include <netipsec/ipsec.h>
1.106 thorpej 103: #include <netipsec/ipsec_var.h>
1.171 maxv 104: #endif
1.72 jonathan 105:
1.20 mycroft 106: struct inpcbtable rawcbtable;
1.30 pk 107:
1.82 perry 108: int rip_pcbnotify(struct inpcbtable *, struct in_addr,
109: struct in_addr, int, int, void (*)(struct inpcb *, int));
1.149 rtr 110: static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
1.139 rtr 111: static void rip_disconnect1(struct inpcb *);
1.13 mycroft 112:
1.110 pooka 113: static void sysctl_net_inet_raw_setup(struct sysctllog **);
114:
1.13 mycroft 115: /*
116: * Nominal space allocated to a raw ip socket.
117: */
118: #define RIPSNDQ 8192
119: #define RIPRCVQ 8192
1.1 cgd 120:
1.121 rmind 121: static u_long rip_sendspace = RIPSNDQ;
122: static u_long rip_recvspace = RIPRCVQ;
123:
1.1 cgd 124: /*
125: * Raw interface to IP protocol.
126: */
1.13 mycroft 127:
128: /*
129: * Initialize raw connection block q.
130: */
131: void
1.83 perry 132: rip_init(void)
1.13 mycroft 133: {
134:
1.110 pooka 135: sysctl_net_inet_raw_setup(NULL);
1.33 mycroft 136: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 137: }
138:
1.100 dyoung 139: static void
140: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
1.175 ! maxv 141: int hlen, struct mbuf *n)
1.100 dyoung 142: {
1.175 ! maxv 143: struct mbuf *opts = NULL;
! 144:
1.100 dyoung 145: if (last->inp_flags & INP_NOHEADER)
146: m_adj(n, hlen);
1.175 ! maxv 147: if (last->inp_flags & INP_CONTROLOPTS ||
! 148: SOOPT_TIMESTAMP(last->inp_socket->so_options))
1.100 dyoung 149: ip_savecontrol(last, &opts, ip, n);
150: if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
1.172 roy 151: soroverflow(last->inp_socket);
1.100 dyoung 152: m_freem(n);
153: if (opts)
154: m_freem(opts);
1.175 ! maxv 155: } else {
1.100 dyoung 156: sorwakeup(last->inp_socket);
1.175 ! maxv 157: }
1.100 dyoung 158: }
159:
1.1 cgd 160: /*
161: * Setup generic address and protocol structures
162: * for raw_input routine, then pass them along with
163: * mbuf chain.
164: */
1.9 mycroft 165: void
1.24 christos 166: rip_input(struct mbuf *m, ...)
1.1 cgd 167: {
1.100 dyoung 168: int hlen, proto;
1.53 augustss 169: struct ip *ip = mtod(m, struct ip *);
1.75 itojun 170: struct inpcb_hdr *inph;
1.53 augustss 171: struct inpcb *inp;
1.97 dyoung 172: struct inpcb *last = NULL;
1.175 ! maxv 173: struct mbuf *n;
1.32 mycroft 174: struct sockaddr_in ripsrc;
1.43 itojun 175: va_list ap;
176:
177: va_start(ap, m);
1.64 simonb 178: (void)va_arg(ap, int); /* ignore value, advance ap */
1.43 itojun 179: proto = va_arg(ap, int);
180: va_end(ap);
1.1 cgd 181:
1.97 dyoung 182: sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42 thorpej 183:
184: /*
185: * XXX Compatibility: programs using raw IP expect ip_len
1.62 itojun 186: * XXX to have the header length subtracted, and in host order.
187: * XXX ip_off is also expected to be host order.
1.42 thorpej 188: */
1.100 dyoung 189: hlen = ip->ip_hl << 2;
190: ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62 itojun 191: NTOHS(ip->ip_off);
1.32 mycroft 192:
1.117 christos 193: TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75 itojun 194: inp = (struct inpcb *)inph;
195: if (inp->inp_af != AF_INET)
196: continue;
1.43 itojun 197: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 198: continue;
1.32 mycroft 199: if (!in_nullhost(inp->inp_laddr) &&
200: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 201: continue;
1.32 mycroft 202: if (!in_nullhost(inp->inp_faddr) &&
203: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 204: continue;
1.174 maxv 205:
206: if (last == NULL) {
1.97 dyoung 207: ;
1.174 maxv 208: }
1.116 christos 209: #if defined(IPSEC)
1.169 maxv 210: else if (ipsec_used && ipsec_in_reject(m, last)) {
1.174 maxv 211: /* do not inject data into pcb */
1.97 dyoung 212: }
1.173 maxv 213: #endif
1.99 dyoung 214: else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.175 ! maxv 215: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, n);
1.13 mycroft 216: }
1.174 maxv 217:
1.36 thorpej 218: last = inp;
1.13 mycroft 219: }
1.173 maxv 220:
1.116 christos 221: #if defined(IPSEC)
1.169 maxv 222: if (ipsec_used && last != NULL && ipsec_in_reject(m, last)) {
1.55 itojun 223: m_freem(m);
1.105 thorpej 224: IP_STATDEC(IP_STAT_DELIVERED);
1.174 maxv 225: /* do not inject data into pcb */
1.55 itojun 226: } else
1.173 maxv 227: #endif
228: if (last != NULL) {
1.175 ! maxv 229: rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, m);
1.173 maxv 230: } else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105 thorpej 231: uint64_t *ips;
232:
1.97 dyoung 233: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
234: 0, 0);
1.105 thorpej 235: ips = IP_STAT_GETREF();
236: ips[IP_STAT_NOPROTO]++;
237: ips[IP_STAT_DELIVERED]--;
238: IP_STAT_PUTREF();
1.173 maxv 239: } else {
1.97 dyoung 240: m_freem(m);
1.173 maxv 241: }
242:
1.43 itojun 243: return;
1.60 itojun 244: }
245:
246: int
1.83 perry 247: rip_pcbnotify(struct inpcbtable *table,
248: struct in_addr faddr, struct in_addr laddr, int proto, int errno,
249: void (*notify)(struct inpcb *, int))
1.60 itojun 250: {
1.117 christos 251: struct inpcb_hdr *inph, *ninph;
1.60 itojun 252: int nmatch;
253:
254: nmatch = 0;
1.117 christos 255: TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
256: struct inpcb *inp = (struct inpcb *)inph;
1.75 itojun 257: if (inp->inp_af != AF_INET)
258: continue;
1.60 itojun 259: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
260: continue;
261: if (in_hosteq(inp->inp_faddr, faddr) &&
262: in_hosteq(inp->inp_laddr, laddr)) {
263: (*notify)(inp, errno);
264: nmatch++;
265: }
266: }
267:
268: return nmatch;
269: }
270:
271: void *
1.95 dyoung 272: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60 itojun 273: {
274: struct ip *ip = v;
1.82 perry 275: void (*notify)(struct inpcb *, int) = in_rtchange;
1.60 itojun 276: int errno;
277:
278: if (sa->sa_family != AF_INET ||
279: sa->sa_len != sizeof(struct sockaddr_in))
280: return NULL;
281: if ((unsigned)cmd >= PRC_NCMDS)
282: return NULL;
283: errno = inetctlerrmap[cmd];
284: if (PRC_IS_REDIRECT(cmd))
285: notify = in_rtchange, ip = 0;
286: else if (cmd == PRC_HOSTDEAD)
287: ip = 0;
288: else if (errno == 0)
289: return NULL;
290: if (ip) {
1.95 dyoung 291: rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60 itojun 292: ip->ip_src, ip->ip_p, errno, notify);
293:
294: /* XXX mapped address case */
295: } else
1.95 dyoung 296: in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60 itojun 297: notify);
298: return NULL;
1.1 cgd 299: }
300:
301: /*
302: * Generate IP header and pass packet to ip_output.
303: * Tack on options user may have setup with control call.
304: */
1.9 mycroft 305: int
1.166 ryo 306: rip_output(struct mbuf *m, struct inpcb *inp, struct mbuf *control,
307: struct lwp *l)
1.24 christos 308: {
1.53 augustss 309: struct ip *ip;
1.10 mycroft 310: struct mbuf *opts;
1.166 ryo 311: struct ip_pktopts pktopts;
312: kauth_cred_t cred;
313: int error, flags;
314:
315: flags = (inp->inp_socket->so_options & SO_DONTROUTE) |
316: IP_ALLOWBROADCAST | IP_RETURNMTU;
317:
318: if (l == NULL)
319: cred = NULL;
320: else
321: cred = l->l_cred;
322:
323: /* Setup IP outgoing packet options */
324: memset(&pktopts, 0, sizeof(pktopts));
1.167 ryo 325: error = ip_setpktopts(control, &pktopts, &flags, inp, cred);
1.166 ryo 326: if (control != NULL)
327: m_freem(control);
328: if (error != 0)
329: goto release;
1.1 cgd 330:
331: /*
332: * If the user handed us a complete IP packet, use it.
333: * Otherwise, allocate an mbuf for a header and fill it in.
334: */
1.13 mycroft 335: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 336: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
1.166 ryo 337: error = EMSGSIZE;
338: goto release;
1.35 thorpej 339: }
1.68 itojun 340: M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
1.166 ryo 341: if (!m) {
342: error = ENOBUFS;
343: goto release;
344: }
1.1 cgd 345: ip = mtod(m, struct ip *);
346: ip->ip_tos = 0;
1.62 itojun 347: ip->ip_off = htons(0);
1.13 mycroft 348: ip->ip_p = inp->inp_ip.ip_p;
1.62 itojun 349: ip->ip_len = htons(m->m_pkthdr.len);
1.166 ryo 350: ip->ip_src = pktopts.ippo_laddr.sin_addr;
1.27 mycroft 351: ip->ip_dst = inp->inp_faddr;
1.1 cgd 352: ip->ip_ttl = MAXTTL;
1.13 mycroft 353: opts = inp->inp_options;
354: } else {
1.35 thorpej 355: if (m->m_pkthdr.len > IP_MAXPACKET) {
1.166 ryo 356: error = EMSGSIZE;
357: goto release;
1.35 thorpej 358: }
1.13 mycroft 359: ip = mtod(m, struct ip *);
1.65 thorpej 360:
361: /*
362: * If the mbuf is read-only, we need to allocate
363: * a new mbuf for the header, since we need to
364: * modify the header.
365: */
366: if (M_READONLY(m)) {
367: int hlen = ip->ip_hl << 2;
368:
369: m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
1.166 ryo 370: if (m == NULL) {
371: error = ENOMEM; /* XXX */
372: goto release;
373: }
1.65 thorpej 374: ip = mtod(m, struct ip *);
375: }
376:
1.62 itojun 377: /* XXX userland passes ip_len and ip_off in host order */
1.38 mycroft 378: if (m->m_pkthdr.len != ip->ip_len) {
1.166 ryo 379: error = EINVAL;
380: goto release;
1.38 mycroft 381: }
1.62 itojun 382: HTONS(ip->ip_len);
383: HTONS(ip->ip_off);
1.103 matt 384: if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
385: flags |= IP_NOIPNEWID;
1.13 mycroft 386: opts = NULL;
387: /* XXX prevent ip_output from overwriting header fields */
388: flags |= IP_RAWOUTPUT;
1.105 thorpej 389: IP_STATINC(IP_STAT_RAWOUT);
1.1 cgd 390: }
1.123 rmind 391:
392: /*
393: * IP output. Note: if IP_RETURNMTU flag is set, the MTU size
394: * will be stored in inp_errormtu.
395: */
1.166 ryo 396: return ip_output(m, opts, &inp->inp_route, flags, pktopts.ippo_imo,
397: inp);
398:
399: release:
400: if (m != NULL)
401: m_freem(m);
402: return error;
1.1 cgd 403: }
404:
405: /*
406: * Raw IP socket option processing.
407: */
1.9 mycroft 408: int
1.108 plunky 409: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1 cgd 410: {
1.53 augustss 411: struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 412: int error = 0;
1.108 plunky 413: int optval;
1.1 cgd 414:
1.108 plunky 415: if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100 dyoung 416: if (op == PRCO_GETOPT) {
1.108 plunky 417: optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
418: error = sockopt_set(sopt, &optval, sizeof(optval));
419: } else if (op == PRCO_SETOPT) {
420: error = sockopt_getint(sopt, &optval);
421: if (error)
422: goto out;
423: if (optval) {
424: inp->inp_flags &= ~INP_HDRINCL;
425: inp->inp_flags |= INP_NOHEADER;
426: } else
427: inp->inp_flags &= ~INP_NOHEADER;
428: }
429: goto out;
430: } else if (sopt->sopt_level != IPPROTO_IP)
431: return ip_ctloutput(op, so, sopt);
1.100 dyoung 432:
433: switch (op) {
1.31 mycroft 434:
435: case PRCO_SETOPT:
1.108 plunky 436: switch (sopt->sopt_name) {
1.31 mycroft 437: case IP_HDRINCL:
1.108 plunky 438: error = sockopt_getint(sopt, &optval);
439: if (error)
440: break;
441: if (optval)
1.100 dyoung 442: inp->inp_flags |= INP_HDRINCL;
443: else
444: inp->inp_flags &= ~INP_HDRINCL;
1.108 plunky 445: break;
1.31 mycroft 446:
447: #ifdef MROUTING
448: case MRT_INIT:
449: case MRT_DONE:
450: case MRT_ADD_VIF:
451: case MRT_DEL_VIF:
452: case MRT_ADD_MFC:
453: case MRT_DEL_MFC:
454: case MRT_ASSERT:
1.81 manu 455: case MRT_API_CONFIG:
456: case MRT_ADD_BW_UPCALL:
457: case MRT_DEL_BW_UPCALL:
1.108 plunky 458: error = ip_mrouter_set(so, sopt);
1.31 mycroft 459: break;
460: #endif
461:
462: default:
1.108 plunky 463: error = ip_ctloutput(op, so, sopt);
1.31 mycroft 464: break;
1.13 mycroft 465: }
466: break;
1.1 cgd 467:
1.31 mycroft 468: case PRCO_GETOPT:
1.108 plunky 469: switch (sopt->sopt_name) {
1.31 mycroft 470: case IP_HDRINCL:
1.108 plunky 471: optval = inp->inp_flags & INP_HDRINCL;
472: error = sockopt_set(sopt, &optval, sizeof(optval));
1.31 mycroft 473: break;
474:
1.6 hpeyerl 475: #ifdef MROUTING
1.31 mycroft 476: case MRT_VERSION:
477: case MRT_ASSERT:
1.81 manu 478: case MRT_API_SUPPORT:
479: case MRT_API_CONFIG:
1.108 plunky 480: error = ip_mrouter_get(so, sopt);
1.18 mycroft 481: break;
1.31 mycroft 482: #endif
483:
1.18 mycroft 484: default:
1.108 plunky 485: error = ip_ctloutput(op, so, sopt);
1.18 mycroft 486: break;
487: }
1.31 mycroft 488: break;
1.1 cgd 489: }
1.108 plunky 490: out:
1.100 dyoung 491: return error;
1.1 cgd 492: }
493:
1.27 mycroft 494: int
1.149 rtr 495: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27 mycroft 496: {
497:
1.158 ozaki-r 498: if (IFNET_READER_EMPTY())
1.27 mycroft 499: return (EADDRNOTAVAIL);
1.115 joerg 500: if (addr->sin_family != AF_INET)
1.27 mycroft 501: return (EAFNOSUPPORT);
502: inp->inp_faddr = addr->sin_addr;
503: return (0);
504: }
505:
1.139 rtr 506: static void
507: rip_disconnect1(struct inpcb *inp)
1.27 mycroft 508: {
509:
1.32 mycroft 510: inp->inp_faddr = zeroin_addr;
1.27 mycroft 511: }
512:
1.121 rmind 513: static int
514: rip_attach(struct socket *so, int proto)
515: {
516: struct inpcb *inp;
517: int error;
518:
519: KASSERT(sotoinpcb(so) == NULL);
520: sosetlock(so);
521:
522: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
523: error = soreserve(so, rip_sendspace, rip_recvspace);
524: if (error) {
525: return error;
526: }
527: }
528:
529: error = in_pcballoc(so, &rawcbtable);
530: if (error) {
531: return error;
532: }
533: inp = sotoinpcb(so);
534: inp->inp_ip.ip_p = proto;
535: KASSERT(solocked(so));
536:
537: return 0;
538: }
1.13 mycroft 539:
1.121 rmind 540: static void
541: rip_detach(struct socket *so)
1.1 cgd 542: {
1.53 augustss 543: struct inpcb *inp;
1.121 rmind 544:
545: KASSERT(solocked(so));
546: inp = sotoinpcb(so);
547: KASSERT(inp != NULL);
548:
1.13 mycroft 549: #ifdef MROUTING
1.6 hpeyerl 550: extern struct socket *ip_mrouter;
1.121 rmind 551: if (so == ip_mrouter) {
552: ip_mrouter_done();
553: }
1.6 hpeyerl 554: #endif
1.121 rmind 555: in_pcbdetach(inp);
556: }
557:
1.125 rtr 558: static int
1.148 rtr 559: rip_accept(struct socket *so, struct sockaddr *nam)
1.133 rtr 560: {
561: KASSERT(solocked(so));
562:
563: panic("rip_accept");
1.136 rtr 564:
565: return EOPNOTSUPP;
566: }
567:
568: static int
1.147 rtr 569: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136 rtr 570: {
571: struct inpcb *inp = sotoinpcb(so);
1.147 rtr 572: struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136 rtr 573: int error = 0;
1.159 ozaki-r 574: int s, ss;
575: struct ifaddr *ifa;
1.136 rtr 576:
577: KASSERT(solocked(so));
578: KASSERT(inp != NULL);
579: KASSERT(nam != NULL);
580:
1.147 rtr 581: if (addr->sin_len != sizeof(*addr))
582: return EINVAL;
583:
1.136 rtr 584: s = splsoftnet();
1.158 ozaki-r 585: if (IFNET_READER_EMPTY()) {
1.136 rtr 586: error = EADDRNOTAVAIL;
587: goto release;
588: }
589: if (addr->sin_family != AF_INET) {
590: error = EAFNOSUPPORT;
591: goto release;
592: }
1.159 ozaki-r 593: ss = pserialize_read_enter();
594: if ((ifa = ifa_ifwithaddr(sintosa(addr))) == NULL &&
1.151 roy 595: !in_nullhost(addr->sin_addr))
596: {
1.159 ozaki-r 597: pserialize_read_exit(ss);
1.136 rtr 598: error = EADDRNOTAVAIL;
599: goto release;
600: }
1.161 roy 601: if (ifa && (ifatoia(ifa))->ia4_flags & IN6_IFF_DUPLICATED) {
1.159 ozaki-r 602: pserialize_read_exit(ss);
1.151 roy 603: error = EADDRNOTAVAIL;
604: goto release;
605: }
1.159 ozaki-r 606: pserialize_read_exit(ss);
1.151 roy 607:
1.136 rtr 608: inp->inp_laddr = addr->sin_addr;
609:
610: release:
611: splx(s);
612: return error;
613: }
614:
615: static int
1.142 rtr 616: rip_listen(struct socket *so, struct lwp *l)
1.136 rtr 617: {
618: KASSERT(solocked(so));
619:
1.133 rtr 620: return EOPNOTSUPP;
621: }
622:
623: static int
1.152 rtr 624: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137 rtr 625: {
626: struct inpcb *inp = sotoinpcb(so);
627: int error = 0;
628: int s;
629:
630: KASSERT(solocked(so));
631: KASSERT(inp != NULL);
632: KASSERT(nam != NULL);
633:
634: s = splsoftnet();
1.152 rtr 635: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137 rtr 636: if (! error)
637: soisconnected(so);
1.140 rtr 638: splx(s);
1.137 rtr 639:
640: return error;
641: }
642:
1.139 rtr 643: static int
1.145 rtr 644: rip_connect2(struct socket *so, struct socket *so2)
645: {
646: KASSERT(solocked(so));
647:
648: return EOPNOTSUPP;
649: }
650:
651: static int
1.139 rtr 652: rip_disconnect(struct socket *so)
653: {
654: struct inpcb *inp = sotoinpcb(so);
1.140 rtr 655: int s;
1.139 rtr 656:
657: KASSERT(solocked(so));
658: KASSERT(inp != NULL);
659:
1.140 rtr 660: s = splsoftnet();
1.139 rtr 661: soisdisconnected(so);
662: rip_disconnect1(inp);
1.140 rtr 663: splx(s);
664:
1.139 rtr 665: return 0;
666: }
667:
668: static int
669: rip_shutdown(struct socket *so)
670: {
1.140 rtr 671: int s;
672:
1.139 rtr 673: KASSERT(solocked(so));
674:
675: /*
676: * Mark the connection as being incapable of further input.
677: */
1.140 rtr 678: s = splsoftnet();
1.139 rtr 679: socantsendmore(so);
1.140 rtr 680: splx(s);
681:
1.139 rtr 682: return 0;
683: }
684:
685: static int
686: rip_abort(struct socket *so)
687: {
688: KASSERT(solocked(so));
689:
690: panic("rip_abort");
691:
692: return EOPNOTSUPP;
693: }
1.137 rtr 694:
695: static int
1.127 rtr 696: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125 rtr 697: {
1.127 rtr 698: return in_control(so, cmd, nam, ifp);
1.125 rtr 699: }
700:
1.128 rtr 701: static int
702: rip_stat(struct socket *so, struct stat *ub)
703: {
1.131 rtr 704: KASSERT(solocked(so));
705:
1.130 rtr 706: /* stat: don't bother with a blocksize. */
707: return 0;
1.128 rtr 708: }
709:
1.132 rtr 710: static int
1.148 rtr 711: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 712: {
1.140 rtr 713: int s;
714:
1.134 rtr 715: KASSERT(solocked(so));
1.132 rtr 716: KASSERT(sotoinpcb(so) != NULL);
717: KASSERT(nam != NULL);
718:
1.140 rtr 719: s = splsoftnet();
1.148 rtr 720: in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 721: splx(s);
722:
1.132 rtr 723: return 0;
724: }
725:
726: static int
1.148 rtr 727: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132 rtr 728: {
1.140 rtr 729: int s;
730:
1.134 rtr 731: KASSERT(solocked(so));
1.132 rtr 732: KASSERT(sotoinpcb(so) != NULL);
733: KASSERT(nam != NULL);
734:
1.140 rtr 735: s = splsoftnet();
1.148 rtr 736: in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140 rtr 737: splx(s);
738:
1.132 rtr 739: return 0;
740: }
741:
1.135 rtr 742: static int
1.144 rtr 743: rip_rcvd(struct socket *so, int flags, struct lwp *l)
744: {
745: KASSERT(solocked(so));
746:
747: return EOPNOTSUPP;
748: }
749:
750: static int
1.135 rtr 751: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
752: {
753: KASSERT(solocked(so));
754:
755: return EOPNOTSUPP;
756: }
757:
758: static int
1.152 rtr 759: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143 rtr 760: struct mbuf *control, struct lwp *l)
761: {
762: struct inpcb *inp = sotoinpcb(so);
763: int error = 0;
764: int s;
765:
766: KASSERT(solocked(so));
767: KASSERT(inp != NULL);
768: KASSERT(m != NULL);
769:
770: /*
771: * Ship a packet out. The appropriate raw output
772: * routine handles any massaging necessary.
773: */
774: s = splsoftnet();
775: if (nam) {
776: if ((so->so_state & SS_ISCONNECTED) != 0) {
777: error = EISCONN;
778: goto die;
779: }
1.152 rtr 780: error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.166 ryo 781: if (error)
782: goto die;
1.143 rtr 783: } else {
784: if ((so->so_state & SS_ISCONNECTED) == 0) {
785: error = ENOTCONN;
786: goto die;
787: }
788: }
1.166 ryo 789: error = rip_output(m, inp, control, l);
790: m = NULL;
791: control = NULL;
1.143 rtr 792: if (nam)
793: rip_disconnect1(inp);
1.166 ryo 794: die:
795: if (m != NULL)
796: m_freem(m);
797: if (control != NULL)
798: m_freem(control);
1.143 rtr 799:
800: splx(s);
801: return error;
802: }
803:
804: static int
1.135 rtr 805: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
806: {
807: KASSERT(solocked(so));
808:
809: m_freem(m);
810: m_freem(control);
811:
812: return EOPNOTSUPP;
813: }
814:
1.145 rtr 815: static int
816: rip_purgeif(struct socket *so, struct ifnet *ifp)
817: {
818: int s;
819:
820: s = splsoftnet();
821: mutex_enter(softnet_lock);
822: in_pcbpurgeif0(&rawcbtable, ifp);
1.162 ozaki-r 823: #ifdef NET_MPSAFE
824: mutex_exit(softnet_lock);
825: #endif
1.145 rtr 826: in_purgeif(ifp);
1.162 ozaki-r 827: #ifdef NET_MPSAFE
828: mutex_enter(softnet_lock);
829: #endif
1.145 rtr 830: in_pcbpurgeif(&rawcbtable, ifp);
831: mutex_exit(softnet_lock);
832: splx(s);
833:
834: return 0;
835: }
836:
1.122 rmind 837: PR_WRAP_USRREQS(rip)
838: #define rip_attach rip_attach_wrapper
839: #define rip_detach rip_detach_wrapper
1.133 rtr 840: #define rip_accept rip_accept_wrapper
1.136 rtr 841: #define rip_bind rip_bind_wrapper
842: #define rip_listen rip_listen_wrapper
1.137 rtr 843: #define rip_connect rip_connect_wrapper
1.145 rtr 844: #define rip_connect2 rip_connect2_wrapper
1.139 rtr 845: #define rip_disconnect rip_disconnect_wrapper
846: #define rip_shutdown rip_shutdown_wrapper
847: #define rip_abort rip_abort_wrapper
1.125 rtr 848: #define rip_ioctl rip_ioctl_wrapper
1.128 rtr 849: #define rip_stat rip_stat_wrapper
1.132 rtr 850: #define rip_peeraddr rip_peeraddr_wrapper
851: #define rip_sockaddr rip_sockaddr_wrapper
1.144 rtr 852: #define rip_rcvd rip_rcvd_wrapper
1.135 rtr 853: #define rip_recvoob rip_recvoob_wrapper
1.143 rtr 854: #define rip_send rip_send_wrapper
1.135 rtr 855: #define rip_sendoob rip_sendoob_wrapper
1.145 rtr 856: #define rip_purgeif rip_purgeif_wrapper
1.120 rmind 857:
858: const struct pr_usrreqs rip_usrreqs = {
1.121 rmind 859: .pr_attach = rip_attach,
860: .pr_detach = rip_detach,
1.133 rtr 861: .pr_accept = rip_accept,
1.136 rtr 862: .pr_bind = rip_bind,
863: .pr_listen = rip_listen,
1.137 rtr 864: .pr_connect = rip_connect,
1.145 rtr 865: .pr_connect2 = rip_connect2,
1.139 rtr 866: .pr_disconnect = rip_disconnect,
867: .pr_shutdown = rip_shutdown,
868: .pr_abort = rip_abort,
1.125 rtr 869: .pr_ioctl = rip_ioctl,
1.128 rtr 870: .pr_stat = rip_stat,
1.132 rtr 871: .pr_peeraddr = rip_peeraddr,
872: .pr_sockaddr = rip_sockaddr,
1.144 rtr 873: .pr_rcvd = rip_rcvd,
1.135 rtr 874: .pr_recvoob = rip_recvoob,
1.143 rtr 875: .pr_send = rip_send,
1.135 rtr 876: .pr_sendoob = rip_sendoob,
1.145 rtr 877: .pr_purgeif = rip_purgeif,
1.120 rmind 878: };
879:
1.110 pooka 880: static void
881: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84 atatat 882: {
883:
884: sysctl_createv(clog, 0, NULL, NULL,
885: CTLFLAG_PERMANENT,
886: CTLTYPE_NODE, "inet", NULL,
887: NULL, 0, NULL, 0,
888: CTL_NET, PF_INET, CTL_EOL);
889: sysctl_createv(clog, 0, NULL, NULL,
890: CTLFLAG_PERMANENT,
891: CTLTYPE_NODE, "raw",
892: SYSCTL_DESCR("Raw IPv4 settings"),
893: NULL, 0, NULL, 0,
894: CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
895:
896: sysctl_createv(clog, 0, NULL, NULL,
897: CTLFLAG_PERMANENT,
1.86 atatat 898: CTLTYPE_STRUCT, "pcblist",
1.84 atatat 899: SYSCTL_DESCR("Raw IPv4 control block list"),
900: sysctl_inpcblist, 0, &rawcbtable, 0,
901: CTL_NET, PF_INET, IPPROTO_RAW,
902: CTL_CREATE, CTL_EOL);
903: }
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