VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/slirp/udp.c@ 85794

Last change on this file since 85794 was 82968, checked in by vboxsync, 5 years ago

Copyright year updates by scm.

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1/* $Id: udp.c 82968 2020-02-04 10:35:17Z vboxsync $ */
2/** @file
3 * NAT - UDP protocol.
4 */
5
6/*
7 * Copyright (C) 2006-2020 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18/*
19 * This code is based on:
20 *
21 * Copyright (c) 1982, 1986, 1988, 1990, 1993
22 * The Regents of the University of California. All rights reserved.
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * This product includes software developed by the University of
35 * California, Berkeley and its contributors.
36 * 4. Neither the name of the University nor the names of its contributors
37 * may be used to endorse or promote products derived from this software
38 * without specific prior written permission.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
53 * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
54 */
55
56/*
57 * Changes and additions relating to SLiRP
58 * Copyright (c) 1995 Danny Gasparovski.
59 *
60 * Please read the file COPYRIGHT for the
61 * terms and conditions of the copyright.
62 */
63
64#include <slirp.h>
65#include "ip_icmp.h"
66
67
68/*
69 * UDP protocol implementation.
70 * Per RFC 768, August, 1980.
71 */
72#define udpcksum 1
73
74void
75udp_init(PNATState pData)
76{
77 udp_last_so = &udb;
78 udb.so_next = udb.so_prev = &udb;
79}
80
81/* m->m_data points at ip packet header
82 * m->m_len length ip packet
83 * ip->ip_len length data (IPDU)
84 */
85void
86udp_input(PNATState pData, register struct mbuf *m, int iphlen)
87{
88 register struct ip *ip;
89 register struct udphdr *uh;
90 int len;
91 struct ip save_ip;
92 struct socket *so;
93 int ret;
94 int ttl, tos;
95
96 LogFlowFunc(("ENTER: m = %p, iphlen = %d\n", m, iphlen));
97 ip = mtod(m, struct ip *);
98 Log2(("%RTnaipv4 iphlen = %d\n", ip->ip_dst, iphlen));
99
100 udpstat.udps_ipackets++;
101
102 /*
103 * Strip IP options, if any; should skip this,
104 * make available to user, and use on returned packets,
105 * but we don't yet have a way to check the checksum
106 * with options still present.
107 */
108 if (iphlen > sizeof(struct ip))
109 {
110 ip_stripoptions(m, (struct mbuf *)0);
111 iphlen = sizeof(struct ip);
112 }
113
114 /*
115 * Get IP and UDP header together in first mbuf.
116 */
117 ip = mtod(m, struct ip *);
118 uh = (struct udphdr *)((caddr_t)ip + iphlen);
119
120 /*
121 * Make mbuf data length reflect UDP length.
122 * If not enough data to reflect UDP length, drop.
123 */
124 len = RT_N2H_U16((u_int16_t)uh->uh_ulen);
125 Assert(ip->ip_len + iphlen == (ssize_t)m_length(m, NULL));
126
127 if (ip->ip_len != len)
128 {
129 if (len > ip->ip_len)
130 {
131 udpstat.udps_badlen++;
132 Log3(("NAT: IP(id: %hd) has bad size\n", ip->ip_id));
133 goto bad_free_mbuf;
134 }
135 m_adj(m, len - ip->ip_len);
136 ip->ip_len = len;
137 }
138
139 /*
140 * Save a copy of the IP header in case we want restore it
141 * for sending an ICMP error message in response.
142 */
143 save_ip = *ip;
144 save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
145
146 /*
147 * Checksum extended UDP header and data.
148 */
149 if (udpcksum && uh->uh_sum)
150 {
151 memset(((struct ipovly *)ip)->ih_x1, 0, 9);
152 ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
153#if 0
154 /* keep uh_sum for ICMP reply */
155 uh->uh_sum = cksum(m, len + sizeof (struct ip));
156 if (uh->uh_sum)
157 {
158
159#endif
160 if (cksum(m, len + iphlen))
161 {
162 udpstat.udps_badsum++;
163 Log3(("NAT: IP(id: %hd) has bad (udp) cksum\n", ip->ip_id));
164 goto bad_free_mbuf;
165 }
166 }
167#if 0
168 }
169#endif
170
171 /*
172 * handle DHCP/BOOTP
173 */
174 if (uh->uh_dport == RT_H2N_U16_C(BOOTP_SERVER))
175 {
176 bootp_input(pData, m);
177 goto done_free_mbuf;
178 }
179
180 LogFunc(("uh src: %RTnaipv4:%d, dst: %RTnaipv4:%d\n",
181 ip->ip_src.s_addr, RT_N2H_U16(uh->uh_sport),
182 ip->ip_dst.s_addr, RT_N2H_U16(uh->uh_dport)));
183
184 /*
185 * handle DNS host resolver without creating a socket
186 */
187 if ( pData->fUseHostResolver
188 && uh->uh_dport == RT_H2N_U16_C(53)
189 && CTL_CHECK(ip->ip_dst.s_addr, CTL_DNS))
190 {
191 struct sockaddr_in dst, src;
192
193 src.sin_addr.s_addr = ip->ip_dst.s_addr;
194 src.sin_port = uh->uh_dport;
195 dst.sin_addr.s_addr = ip->ip_src.s_addr;
196 dst.sin_port = uh->uh_sport;
197
198 m_adj(m, sizeof(struct udpiphdr));
199
200 m = hostresolver(pData, m, ip->ip_src.s_addr, uh->uh_sport);
201 if (m == NULL)
202 goto done_free_mbuf;
203
204 slirpMbufTagService(pData, m, CTL_DNS);
205
206 udp_output2(pData, NULL, m, &src, &dst, IPTOS_LOWDELAY);
207 LogFlowFuncLeave();
208 return;
209 }
210
211 /*
212 * handle TFTP
213 */
214 if ( uh->uh_dport == RT_H2N_U16_C(TFTP_SERVER)
215 && CTL_CHECK(ip->ip_dst.s_addr, CTL_TFTP))
216 {
217 if (pData->pvTftpSessions)
218 slirpTftpInput(pData, m);
219 goto done_free_mbuf;
220 }
221
222 /*
223 * XXX: DNS proxy currently relies on the fact that each socket
224 * only serves one request.
225 */
226 if ( pData->fUseDnsProxy
227 && CTL_CHECK(ip->ip_dst.s_addr, CTL_DNS)
228 && (uh->uh_dport == RT_H2N_U16_C(53)))
229 {
230 so = NULL;
231 goto new_socket;
232 }
233
234 /*
235 * Locate pcb for datagram.
236 */
237 so = udp_last_so;
238 if ( so->so_lport != uh->uh_sport
239 || so->so_laddr.s_addr != ip->ip_src.s_addr)
240 {
241 struct socket *tmp;
242
243 for (tmp = udb.so_next; tmp != &udb; tmp = tmp->so_next)
244 {
245 if ( tmp->so_lport == uh->uh_sport
246 && tmp->so_laddr.s_addr == ip->ip_src.s_addr)
247 {
248 so = tmp;
249 break;
250 }
251 }
252 if (tmp == &udb)
253 so = NULL;
254 else
255 {
256 udpstat.udpps_pcbcachemiss++;
257 udp_last_so = so;
258 }
259 }
260
261 new_socket:
262 if (so == NULL)
263 {
264 /*
265 * If there's no socket for this packet,
266 * create one
267 */
268 if ((so = socreate()) == NULL)
269 {
270 Log2(("NAT: IP(id: %hd) failed to create socket\n", ip->ip_id));
271 goto bad_free_mbuf;
272 }
273
274 /*
275 * Setup fields
276 */
277 so->so_laddr = ip->ip_src;
278 so->so_lport = uh->uh_sport;
279 so->so_iptos = ip->ip_tos;
280
281 if (udp_attach(pData, so) <= 0)
282 {
283 Log2(("NAT: IP(id: %hd) udp_attach errno = %d (%s)\n",
284 ip->ip_id, errno, strerror(errno)));
285 sofree(pData, so);
286 goto bad_free_mbuf;
287 }
288
289 /* udp_last_so = so; */
290 /*
291 * XXXXX Here, check if it's in udpexec_list,
292 * and if it is, do the fork_exec() etc.
293 */
294 }
295
296 so->so_faddr = ip->ip_dst; /* XXX */
297 so->so_fport = uh->uh_dport; /* XXX */
298 Assert(so->so_type == IPPROTO_UDP);
299
300 /*
301 * DNS proxy
302 */
303 if ( pData->fUseDnsProxy
304 && CTL_CHECK(ip->ip_dst.s_addr, CTL_DNS)
305 && (uh->uh_dport == RT_H2N_U16_C(53)))
306 {
307 dnsproxy_query(pData, so, m, iphlen);
308 goto done_free_mbuf;
309 }
310
311 iphlen += sizeof(struct udphdr);
312 m->m_len -= iphlen;
313 m->m_data += iphlen;
314
315 ttl = ip->ip_ttl = save_ip.ip_ttl;
316 if (ttl != so->so_sottl) {
317 ret = setsockopt(so->s, IPPROTO_IP, IP_TTL,
318 (char *)&ttl, sizeof(ttl));
319 if (RT_LIKELY(ret == 0))
320 so->so_sottl = ttl;
321 }
322
323 tos = save_ip.ip_tos;
324 if (tos != so->so_sotos) {
325 ret = setsockopt(so->s, IPPROTO_IP, IP_TOS,
326 (char *)&tos, sizeof(tos));
327 if (RT_LIKELY(ret == 0))
328 so->so_sotos = tos;
329 }
330
331 {
332 /*
333 * Different OSes have different socket options for DF. We
334 * can't use IP_HDRINCL here as it's only valid for SOCK_RAW.
335 */
336# define USE_DF_OPTION(_Optname) \
337 const int dfopt = _Optname
338#if defined(IP_MTU_DISCOVER)
339 USE_DF_OPTION(IP_MTU_DISCOVER);
340#elif defined(IP_DONTFRAG) /* Solaris 11+, FreeBSD */
341 USE_DF_OPTION(IP_DONTFRAG);
342#elif defined(IP_DONTFRAGMENT) /* Windows */
343 USE_DF_OPTION(IP_DONTFRAGMENT);
344#else
345 USE_DF_OPTION(0);
346#endif
347 if (dfopt) {
348 int df = (save_ip.ip_off & IP_DF) != 0;
349#if defined(IP_MTU_DISCOVER)
350 df = df ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
351#endif
352 if (df != so->so_sodf) {
353 ret = setsockopt(so->s, IPPROTO_IP, dfopt,
354 (char *)&df, sizeof(df));
355 if (RT_LIKELY(ret == 0))
356 so->so_sodf = df;
357 }
358 }
359 }
360
361 if ( sosendto(pData, so, m) == -1
362 && ( !soIgnorableErrorCode(errno)
363 && errno != ENOTCONN))
364 {
365 m->m_len += iphlen;
366 m->m_data -= iphlen;
367 *ip = save_ip;
368 Log2(("NAT: UDP tx errno = %d (%s) on sent to %RTnaipv4\n",
369 errno, strerror(errno), ip->ip_dst));
370 icmp_error(pData, m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
371 so->so_m = NULL;
372 LogFlowFuncLeave();
373 return;
374 }
375
376 if (so->so_m)
377 m_freem(pData, so->so_m); /* used for ICMP if error on sorecvfrom */
378
379 /* restore the orig mbuf packet */
380 m->m_len += iphlen;
381 m->m_data -= iphlen;
382 *ip = save_ip;
383 so->so_m = m; /* ICMP backup */
384 LogFlowFuncLeave();
385 return;
386
387bad_free_mbuf:
388 Log2(("NAT: UDP(id: %hd) datagram to %RTnaipv4 with size(%d) claimed as bad\n",
389 ip->ip_id, &ip->ip_dst, ip->ip_len));
390
391done_free_mbuf:
392 /* some services like bootp(built-in), dns(buildt-in) and dhcp don't need sockets
393 * and create new m'buffers to send them to guest, so we'll free their incomming
394 * buffers here.
395 */
396 if (m != NULL)
397 m_freem(pData, m);
398 LogFlowFuncLeave();
399 return;
400}
401
402/**
403 * Output a UDP packet.
404 *
405 * @note This function will finally free m!
406 */
407int udp_output2(PNATState pData, struct socket *so, struct mbuf *m,
408 struct sockaddr_in *saddr, struct sockaddr_in *daddr,
409 int iptos)
410{
411 register struct udpiphdr *ui;
412 int error;
413 int mlen = 0;
414
415 LogFlowFunc(("ENTER: so = %R[natsock], m = %p, saddr = %RTnaipv4, daddr = %RTnaipv4\n",
416 so, m, saddr->sin_addr.s_addr, daddr->sin_addr.s_addr));
417
418 /* in case of built-in service so might be NULL */
419 if (so) Assert(so->so_type == IPPROTO_UDP);
420
421 /*
422 * Adjust for header
423 */
424 m->m_data -= sizeof(struct udpiphdr);
425 m->m_len += sizeof(struct udpiphdr);
426 mlen = m_length(m, NULL);
427
428 /*
429 * Fill in mbuf with extended UDP header
430 * and addresses and length put into network format.
431 */
432 ui = mtod(m, struct udpiphdr *);
433 memset(ui->ui_x1, 0, 9);
434 ui->ui_pr = IPPROTO_UDP;
435 ui->ui_len = RT_H2N_U16((uint16_t)(mlen - sizeof(struct ip)));
436 /* XXXXX Check for from-one-location sockets, or from-any-location sockets */
437 ui->ui_src = saddr->sin_addr;
438 ui->ui_dst = daddr->sin_addr;
439 ui->ui_sport = saddr->sin_port;
440 ui->ui_dport = daddr->sin_port;
441 ui->ui_ulen = ui->ui_len;
442
443 /*
444 * Stuff checksum and output datagram.
445 */
446 ui->ui_sum = 0;
447 if (udpcksum)
448 {
449 if ((ui->ui_sum = cksum(m, /* sizeof (struct udpiphdr) + */ mlen)) == 0)
450 ui->ui_sum = 0xffff;
451 }
452 ((struct ip *)ui)->ip_len = mlen;
453 ((struct ip *)ui)->ip_ttl = ip_defttl;
454 ((struct ip *)ui)->ip_tos = iptos;
455
456 udpstat.udps_opackets++;
457
458 error = ip_output(pData, so, m);
459
460 return error;
461}
462
463/**
464 * @note This function will free m!
465 */
466int udp_output(PNATState pData, struct socket *so, struct mbuf *m,
467 struct sockaddr_in *addr)
468{
469 struct sockaddr_in saddr, daddr;
470
471 Assert(so->so_type == IPPROTO_UDP);
472 LogFlowFunc(("ENTER: so = %R[natsock], m = %p, saddr = %RTnaipv4\n", so, m, addr->sin_addr.s_addr));
473
474 if (so->so_laddr.s_addr == INADDR_ANY)
475 {
476 if (pData->guest_addr_guess.s_addr != INADDR_ANY)
477 {
478 LogRel2(("NAT: port-forward: using %RTnaipv4 for %R[natsock]\n",
479 pData->guest_addr_guess.s_addr, so));
480 so->so_laddr = pData->guest_addr_guess;
481 }
482 else
483 {
484 LogRel2(("NAT: port-forward: guest address unknown for %R[natsock]\n", so));
485 m_freem(pData, m);
486 return 0;
487 }
488 }
489
490 saddr = *addr;
491 if ((so->so_faddr.s_addr & RT_H2N_U32(pData->netmask)) == pData->special_addr.s_addr)
492 {
493 saddr.sin_addr.s_addr = so->so_faddr.s_addr;
494 if (slirpIsWideCasting(pData, so->so_faddr.s_addr))
495 {
496 /**
497 * We haven't got real firewall but have got its submodule libalias.
498 */
499 m->m_flags |= M_SKIP_FIREWALL;
500 /**
501 * udp/137 port is Name Service in NetBIOS protocol. for some reasons Windows guest rejects
502 * accept data from non-aliased server.
503 */
504 if ( (so->so_fport == so->so_lport)
505 && (so->so_fport == RT_H2N_U16(137)))
506 saddr.sin_addr.s_addr = alias_addr.s_addr;
507 else
508 saddr.sin_addr.s_addr = addr->sin_addr.s_addr;
509 so->so_faddr.s_addr = addr->sin_addr.s_addr;
510 }
511 }
512
513 /* Any UDP packet to the loopback address must be translated to be from
514 * the forwarding address, i.e. 10.0.2.2. */
515 if ( (saddr.sin_addr.s_addr & RT_H2N_U32_C(IN_CLASSA_NET))
516 == RT_H2N_U32_C(INADDR_LOOPBACK & IN_CLASSA_NET))
517 saddr.sin_addr.s_addr = alias_addr.s_addr;
518
519 daddr.sin_addr = so->so_laddr;
520 daddr.sin_port = so->so_lport;
521
522 return udp_output2(pData, so, m, &saddr, &daddr, so->so_iptos);
523}
524
525int
526udp_attach(PNATState pData, struct socket *so)
527{
528 struct sockaddr sa_addr;
529 socklen_t socklen = sizeof(struct sockaddr);
530 int status;
531 int opt = 1;
532
533 AssertReturn(so->so_type == 0, -1);
534 so->so_type = IPPROTO_UDP;
535
536 so->s = socket(AF_INET, SOCK_DGRAM, 0);
537 if (so->s == -1)
538 goto error;
539 fd_nonblock(so->s);
540
541 so->so_sottl = 0;
542 so->so_sotos = 0;
543 so->so_sodf = -1;
544
545 status = sobind(pData, so);
546 if (status != 0)
547 return status;
548
549 /* success, insert in queue */
550 so->so_expire = curtime + SO_EXPIRE;
551
552 /* enable broadcast for later use */
553 setsockopt(so->s, SOL_SOCKET, SO_BROADCAST, (const char *)&opt, sizeof(opt));
554
555 status = getsockname(so->s, &sa_addr, &socklen);
556 if (status == 0)
557 {
558 Assert(sa_addr.sa_family == AF_INET);
559 so->so_hlport = ((struct sockaddr_in *)&sa_addr)->sin_port;
560 so->so_hladdr.s_addr = ((struct sockaddr_in *)&sa_addr)->sin_addr.s_addr;
561 }
562
563 SOCKET_LOCK_CREATE(so);
564 QSOCKET_LOCK(udb);
565 insque(pData, so, &udb);
566 NSOCK_INC();
567 QSOCKET_UNLOCK(udb);
568 return so->s;
569error:
570 Log2(("NAT: can't create datagram socket\n"));
571 return -1;
572}
573
574void
575udp_detach(PNATState pData, struct socket *so)
576{
577 if (so != &pData->icmp_socket)
578 {
579 Assert(so->so_type == IPPROTO_UDP);
580 QSOCKET_LOCK(udb);
581 SOCKET_LOCK(so);
582 QSOCKET_UNLOCK(udb);
583 closesocket(so->s);
584 sofree(pData, so);
585 SOCKET_UNLOCK(so);
586 }
587}
588
589struct socket *
590udp_listen(PNATState pData, u_int32_t bind_addr, u_int port, u_int32_t laddr, u_int lport, int flags)
591{
592 struct sockaddr_in addr;
593 struct socket *so;
594 socklen_t addrlen = sizeof(struct sockaddr_in);
595 int opt = 1;
596 LogFlowFunc(("ENTER: bind_addr:%RTnaipv4, port:%d, laddr:%RTnaipv4, lport:%d, flags:%x\n",
597 bind_addr, RT_N2H_U16(port), laddr, RT_N2H_U16(lport), flags));
598
599 if ((so = socreate()) == NULL)
600 {
601 LogFlowFunc(("LEAVE: NULL\n"));
602 return NULL;
603 }
604
605 so->s = socket(AF_INET, SOCK_DGRAM, 0);
606 if (so->s == -1)
607 {
608 LogRel(("NAT: can't create datagram socket\n"));
609 RTMemFree(so);
610 LogFlowFunc(("LEAVE: NULL\n"));
611 return NULL;
612 }
613 so->so_expire = curtime + SO_EXPIRE;
614 so->so_type = IPPROTO_UDP;
615 fd_nonblock(so->s);
616 so->so_sottl = 0;
617 so->so_sotos = 0;
618 so->so_sodf = -1;
619 SOCKET_LOCK_CREATE(so);
620 QSOCKET_LOCK(udb);
621 insque(pData, so, &udb);
622 NSOCK_INC();
623 QSOCKET_UNLOCK(udb);
624
625 memset(&addr, 0, sizeof(addr));
626#ifdef RT_OS_DARWIN
627 addr.sin_len = sizeof(addr);
628#endif
629 addr.sin_family = AF_INET;
630 addr.sin_addr.s_addr = bind_addr;
631 addr.sin_port = port;
632
633 if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0)
634 {
635 LogRel(("NAT: udp bind to %RTnaipv4:%d failed, error %d\n",
636 addr.sin_addr, RT_N2H_U16(port), errno));
637 udp_detach(pData, so);
638 LogFlowFunc(("LEAVE: NULL\n"));
639 return NULL;
640 }
641 setsockopt(so->s, SOL_SOCKET, SO_REUSEADDR,(char *)&opt, sizeof(int));
642/* setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE,(char *)&opt, sizeof(int)); */
643
644 getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
645 so->so_hladdr = addr.sin_addr;
646 so->so_hlport = addr.sin_port;
647
648 /* XXX: wtf are we setting so_faddr/so_fport here? */
649 so->so_fport = addr.sin_port;
650#if 0
651 /* The original check was completely broken, as the commented out
652 * if statement was always true (INADDR_ANY=0). */
653 /** @todo vvl - alias_addr should be set (if required)
654 * later by liabalias module.
655 */
656 if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr)
657 so->so_faddr = alias_addr;
658 else
659#endif
660 so->so_faddr = addr.sin_addr;
661
662 so->so_lport = lport;
663 so->so_laddr.s_addr = laddr;
664 if (flags != SS_FACCEPTONCE)
665 so->so_expire = 0;
666
667 so->so_state = SS_ISFCONNECTED;
668
669 LogFlowFunc(("LEAVE: %R[natsock]\n", so));
670 return so;
671}
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