udp.c@ 5642

最後變更在這個檔案從5642是 1824,由 vboxsync 提交於 18 年前
Disable NAT UDP broadcast resend to local address. Removed the inline declarations and the useless _MSC_VER checks. And eliminated a few compiler warnings.
屬性 svn:eol-style 設為 `native`
檔案大小: 17.3 KB

行
1	/*
2	* Copyright (c) 1982, 1986, 1988, 1990, 1993
3	* The Regents of the University of California. All rights reserved.
4	*
5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions
7	* are met:
8	* 1. Redistributions of source code must retain the above copyright
9	* notice, this list of conditions and the following disclaimer.
10	* 2. Redistributions in binary form must reproduce the above copyright
11	* notice, this list of conditions and the following disclaimer in the
12	* documentation and/or other materials provided with the distribution.
13	* 3. All advertising materials mentioning features or use of this software
14	* must display the following acknowledgement:
15	* This product includes software developed by the University of
16	* California, Berkeley and its contributors.
17	* 4. Neither the name of the University nor the names of its contributors
18	* may be used to endorse or promote products derived from this software
19	* without specific prior written permission.
20	*
21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31	* SUCH DAMAGE.
32	*
33	* @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
34	* udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp
35	*/
36
37	/*
38	* Changes and additions relating to SLiRP
39	* Copyright (c) 1995 Danny Gasparovski.
40	*
41	* Please read the file COPYRIGHT for the
42	* terms and conditions of the copyright.
43	*/
44
45	#include <slirp.h>
46	#include "ip_icmp.h"
47
48
49	/*
50	* UDP protocol implementation.
51	* Per RFC 768, August, 1980.
52	*/
53	#define udpcksum 1
54
55	void
56	udp_init(PNATState pData)
57	{
58	udp_last_so = &udb;
59	udb.so_next = udb.so_prev = &udb;
60	}
61
62	/* m->m_data points at ip packet header
63	* m->m_len length ip packet
64	* ip->ip_len length data (IPDU)
65	*/
66	void
67	udp_input(PNATState pData, register struct mbuf *m, int iphlen)
68	{
69	register struct ip *ip;
70	register struct udphdr *uh;
71	/* struct mbuf opts = 0;/
72	int len;
73	struct ip save_ip;
74	struct socket *so;
75
76	DEBUG_CALL("udp_input");
77	DEBUG_ARG("m = %lx", (long)m);
78	DEBUG_ARG("iphlen = %d", iphlen);
79
80	udpstat.udps_ipackets++;
81
82	/*
83	* Strip IP options, if any; should skip this,
84	* make available to user, and use on returned packets,
85	* but we don't yet have a way to check the checksum
86	* with options still present.
87	*/
88	if(iphlen > sizeof(struct ip)) {
89	ip_stripoptions(m, (struct mbuf *)0);
90	iphlen = sizeof(struct ip);
91	}
92
93	/*
94	* Get IP and UDP header together in first mbuf.
95	*/
96	ip = mtod(m, struct ip *);
97	uh = (struct udphdr *)((caddr_t)ip + iphlen);
98
99	/*
100	* Make mbuf data length reflect UDP length.
101	* If not enough data to reflect UDP length, drop.
102	*/
103	len = ntohs((u_int16_t)uh->uh_ulen);
104
105	if (ip->ip_len != len) {
106	if (len > ip->ip_len) {
107	udpstat.udps_badlen++;
108	goto bad;
109	}
110	m_adj(m, len - ip->ip_len);
111	ip->ip_len = len;
112	}
113
114	/*
115	* Save a copy of the IP header in case we want restore it
116	* for sending an ICMP error message in response.
117	*/
118	save_ip = *ip;
119	save_ip.ip_len+= iphlen; /* tcp_input subtracts this */
120
121	/*
122	* Checksum extended UDP header and data.
123	*/
124	if (udpcksum && uh->uh_sum) {
125	((struct ipovly *)ip)->ih_next = 0;
126	((struct ipovly *)ip)->ih_prev = 0;
127	((struct ipovly *)ip)->ih_x1 = 0;
128	((struct ipovly *)ip)->ih_len = uh->uh_ulen;
129	/* keep uh_sum for ICMP reply
130	* uh->uh_sum = cksum(m, len + sizeof (struct ip));
131	* if (uh->uh_sum) {
132	*/
133	if(cksum(m, len + sizeof(struct ip))) {
134	udpstat.udps_badsum++;
135	goto bad;
136	}
137	}
138
139	/*
140	* handle DHCP/BOOTP
141	*/
142	if (ntohs(uh->uh_dport) == BOOTP_SERVER) {
143	bootp_input(pData, m);
144	goto bad;
145	}
146
147	/*
148	* handle TFTP
149	*/
150	if (ntohs(uh->uh_dport) == TFTP_SERVER) {
151	tftp_input(pData, m);
152	goto bad;
153	}
154
155	/*
156	* Locate pcb for datagram.
157	*/
158	so = udp_last_so;
159	if (so->so_lport != uh->uh_sport \|\|
160	so->so_laddr.s_addr != ip->ip_src.s_addr) {
161	struct socket *tmp;
162
163	for (tmp = udb.so_next; tmp != &udb; tmp = tmp->so_next) {
164	if (tmp->so_lport == uh->uh_sport &&
165	tmp->so_laddr.s_addr == ip->ip_src.s_addr) {
166	so = tmp;
167	break;
168	}
169	}
170	if (tmp == &udb) {
171	so = NULL;
172	} else {
173	udpstat.udpps_pcbcachemiss++;
174	udp_last_so = so;
175	}
176	}
177
178	if (so == NULL) {
179	/*
180	* If there's no socket for this packet,
181	* create one
182	*/
183	if ((so = socreate()) == NULL) goto bad;
184	if(udp_attach(pData, so) == -1) {
185	DEBUG_MISC((dfd," udp_attach errno = %d-%s\n",
186	errno,strerror(errno)));
187	sofree(pData, so);
188	goto bad;
189	}
190
191	/*
192	* Setup fields
193	*/
194	/* udp_last_so = so; */
195	so->so_laddr = ip->ip_src;
196	so->so_lport = uh->uh_sport;
197
198	if ((so->so_iptos = udp_tos(so)) == 0)
199	so->so_iptos = ip->ip_tos;
200
201	/*
202	* XXXXX Here, check if it's in udpexec_list,
203	* and if it is, do the fork_exec() etc.
204	*/
205	}
206
207	so->so_faddr = ip->ip_dst; /* XXX */
208	so->so_fport = uh->uh_dport; /* XXX */
209
210	iphlen += sizeof(struct udphdr);
211	m->m_len -= iphlen;
212	m->m_data += iphlen;
213
214	/*
215	* Now we sendto() the packet.
216	*/
217	if (so->so_emu)
218	udp_emu(pData, so, m);
219
220	if(sosendto(pData, so,m) == -1) {
221	m->m_len += iphlen;
222	m->m_data -= iphlen;
223	*ip=save_ip;
224	DEBUG_MISC((dfd,"udp tx errno = %d-%s\n",errno,strerror(errno)));
225	icmp_error(pData, m, ICMP_UNREACH,ICMP_UNREACH_NET, 0,strerror(errno));
226	}
227
228	m_free(pData, so->so_m); /* used for ICMP if error on sorecvfrom */
229
230	/* restore the orig mbuf packet */
231	m->m_len += iphlen;
232	m->m_data -= iphlen;
233	*ip=save_ip;
234	so->so_m=m; /* ICMP backup */
235
236	return;
237	bad:
238	m_freem(pData, m);
239	/* if (opts) m_freem(opts); */
240	return;
241	}
242
243	int udp_output2(PNATState pData, struct socket so, struct mbuf m,
244	struct sockaddr_in saddr, struct sockaddr_in daddr,
245	int iptos)
246	{
247	register struct udpiphdr *ui;
248	int error = 0;
249
250	DEBUG_CALL("udp_output");
251	DEBUG_ARG("so = %lx", (long)so);
252	DEBUG_ARG("m = %lx", (long)m);
253	DEBUG_ARG("saddr = %lx", (long)saddr->sin_addr.s_addr);
254	DEBUG_ARG("daddr = %lx", (long)daddr->sin_addr.s_addr);
255
256	/*
257	* Adjust for header
258	*/
259	m->m_data -= sizeof(struct udpiphdr);
260	m->m_len += sizeof(struct udpiphdr);
261
262	/*
263	* Fill in mbuf with extended UDP header
264	* and addresses and length put into network format.
265	*/
266	ui = mtod(m, struct udpiphdr *);
267	ui->ui_next = ui->ui_prev = 0;
268	ui->ui_x1 = 0;
269	ui->ui_pr = IPPROTO_UDP;
270	ui->ui_len = htons(m->m_len - sizeof(struct ip)); /* + sizeof (struct udphdr)); */
271	/* XXXXX Check for from-one-location sockets, or from-any-location sockets */
272	ui->ui_src = saddr->sin_addr;
273	ui->ui_dst = daddr->sin_addr;
274	ui->ui_sport = saddr->sin_port;
275	ui->ui_dport = daddr->sin_port;
276	ui->ui_ulen = ui->ui_len;
277
278	/*
279	* Stuff checksum and output datagram.
280	*/
281	ui->ui_sum = 0;
282	if (udpcksum) {
283	if ((ui->ui_sum = cksum(m, /* sizeof (struct udpiphdr) + */ m->m_len)) == 0)
284	ui->ui_sum = 0xffff;
285	}
286	((struct ip *)ui)->ip_len = m->m_len;
287
288	((struct ip *)ui)->ip_ttl = ip_defttl;
289	((struct ip *)ui)->ip_tos = iptos;
290
291	udpstat.udps_opackets++;
292
293	error = ip_output(pData, so, m);
294
295	return (error);
296	}
297
298	int udp_output(PNATState pData, struct socket so, struct mbuf m,
299	struct sockaddr_in *addr)
300	{
301	struct sockaddr_in saddr, daddr;
302
303	saddr = *addr;
304	if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) {
305	saddr.sin_addr.s_addr = so->so_faddr.s_addr;
306	if ((so->so_faddr.s_addr & htonl(0x000000ff)) == htonl(0xff))
307	saddr.sin_addr.s_addr = alias_addr.s_addr;
308	}
309	daddr.sin_addr = so->so_laddr;
310	daddr.sin_port = so->so_lport;
311
312	return udp_output2(pData, so, m, &saddr, &daddr, so->so_iptos);
313	}
314
315	int
316	udp_attach(PNATState pData, struct socket *so)
317	{
318	struct sockaddr_in addr;
319
320	if((so->s = socket(AF_INET,SOCK_DGRAM,0)) != -1) {
321	/*
322	* Here, we bind() the socket. Although not really needed
323	* (sendto() on an unbound socket will bind it), it's done
324	* here so that emulation of ytalk etc. don't have to do it
325	*/
326	addr.sin_family = AF_INET;
327	addr.sin_port = 0;
328	addr.sin_addr.s_addr = INADDR_ANY;
329	if(bind(so->s, (struct sockaddr *)&addr, sizeof(addr))<0) {
330	int lasterrno=errno;
331	closesocket(so->s);
332	so->s=-1;
333	#ifdef _WIN32
334	WSASetLastError(lasterrno);
335	#else
336	errno=lasterrno;
337	#endif
338	} else {
339	int opt = 1;
340	/* success, insert in queue */
341	so->so_expire = curtime + SO_EXPIRE;
342	/* enable broadcast for later use */
343	setsockopt(so->s, SOL_SOCKET, SO_BROADCAST, (const char *)&opt, sizeof(opt));
344	insque(pData, so,&udb);
345	}
346	}
347	return(so->s);
348	}
349
350	void
351	udp_detach(PNATState pData, struct socket *so)
352	{
353	/* Correctly update list if detaching last socket in list. */
354	if (so == udp_last_so) udp_last_so = &udb;
355	closesocket(so->s);
356	/* if (so->so_m) m_free(so->so_m); done by sofree */
357
358	sofree(pData, so);
359	}
360
361	static const struct tos_t udptos[] = {
362	{0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
363	{517, 517, IPTOS_LOWDELAY, EMU_TALK}, /* talk */
364	{518, 518, IPTOS_LOWDELAY, EMU_NTALK}, /* ntalk */
365	{0, 7648, IPTOS_LOWDELAY, EMU_CUSEEME}, /* Cu-Seeme */
366	{0, 0, 0, 0}
367	};
368
369	u_int8_t
370	udp_tos(so)
371	struct socket *so;
372	{
373	int i = 0;
374
375	while(udptos[i].tos) {
376	if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) \|\|
377	(udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) {
378	so->so_emu = udptos[i].emu;
379	return udptos[i].tos;
380	}
381	i++;
382	}
383
384	return 0;
385	}
386
387	#ifdef EMULATE_TALK
388	#include "talkd.h"
389	#endif
390
391	/*
392	* Here, talk/ytalk/ntalk requests must be emulated
393	*/
394	void
395	udp_emu(PNATState pData, struct socket so, struct mbuf m)
396	{
397	struct sockaddr_in addr;
398	socklen_t addrlen = sizeof(addr);
399	#ifdef EMULATE_TALK
400	CTL_MSG_OLD *omsg;
401	CTL_MSG *nmsg;
402	char buff[sizeof(CTL_MSG)];
403	u_char type;
404
405	struct talk_request {
406	struct talk_request *next;
407	struct socket *udp_so;
408	struct socket *tcp_so;
409	} *req;
410
411	static struct talk_request *req_tbl = 0;
412
413	#endif
414
415	struct cu_header {
416	uint16_t d_family; /* destination family */
417	uint16_t d_port; /* destination port */
418	uint32_t d_addr; /* destination address */
419	uint16_t s_family; /* source family */
420	uint16_t s_port; /* source port */
421	uint32_t so_addr; /* source address */
422	uint32_t seqn; /* sequence number */
423	uint16_t message; /* message */
424	uint16_t data_type; /* data type */
425	uint16_t pkt_len; /* packet length */
426	} *cu_head;
427
428	switch(so->so_emu) {
429
430	#ifdef EMULATE_TALK
431	case EMU_TALK:
432	case EMU_NTALK:
433	/*
434	* Talk emulation. We always change the ctl_addr to get
435	* some answers from the daemon. When an ANNOUNCE comes,
436	* we send LEAVE_INVITE to the local daemons. Also when a
437	* DELETE comes, we send copies to the local daemons.
438	*/
439	if (getsockname(so->s, (struct sockaddr *)&addr, &addrlen) < 0)
440	return;
441
442	#define IS_OLD (so->so_emu == EMU_TALK)
443
444	#define COPY_MSG(dest, src) { dest->type = src->type; \
445	dest->id_num = src->id_num; \
446	dest->pid = src->pid; \
447	dest->addr = src->addr; \
448	dest->ctl_addr = src->ctl_addr; \
449	memcpy(&dest->l_name, &src->l_name, NAME_SIZE_OLD); \
450	memcpy(&dest->r_name, &src->r_name, NAME_SIZE_OLD); \
451	memcpy(&dest->r_tty, &src->r_tty, TTY_SIZE); }
452
453	#define OTOSIN(ptr, field) ((struct sockaddr_in *)&ptr->field)
454	/* old_sockaddr to sockaddr_in */
455
456
457	if (IS_OLD) { /* old talk */
458	omsg = mtod(m, CTL_MSG_OLD*);
459	nmsg = (CTL_MSG *) buff;
460	type = omsg->type;
461	OTOSIN(omsg, ctl_addr)->sin_port = addr.sin_port;
462	OTOSIN(omsg, ctl_addr)->sin_addr = our_addr;
463	strncpy(omsg->l_name, getlogin(), NAME_SIZE_OLD);
464	} else { /* new talk */
465	omsg = (CTL_MSG_OLD *) buff;
466	nmsg = mtod(m, CTL_MSG *);
467	type = nmsg->type;
468	OTOSIN(nmsg, ctl_addr)->sin_port = addr.sin_port;
469	OTOSIN(nmsg, ctl_addr)->sin_addr = our_addr;
470	strncpy(nmsg->l_name, getlogin(), NAME_SIZE_OLD);
471	}
472
473	if (type == LOOK_UP)
474	return; /* for LOOK_UP this is enough */
475
476	if (IS_OLD) { /* make a copy of the message */
477	COPY_MSG(nmsg, omsg);
478	nmsg->vers = 1;
479	nmsg->answer = 0;
480	} else
481	COPY_MSG(omsg, nmsg);
482
483	/*
484	* If if is an ANNOUNCE message, we go through the
485	* request table to see if a tcp port has already
486	* been redirected for this socket. If not, we solisten()
487	* a new socket and add this entry to the table.
488	* The port number of the tcp socket and our IP
489	* are put to the addr field of the message structures.
490	* Then a LEAVE_INVITE is sent to both local daemon
491	* ports, 517 and 518. This is why we have two copies
492	* of the message, one in old talk and one in new talk
493	* format.
494	*/
495
496	if (type == ANNOUNCE) {
497	int s;
498	u_short temp_port;
499
500	for(req = req_tbl; req; req = req->next)
501	if (so == req->udp_so)
502	break; /* found it */
503
504	if (!req) { /* no entry for so, create new */
505	req = (struct talk_request *)
506	malloc(sizeof(struct talk_request));
507	req->udp_so = so;
508	req->tcp_so = solisten(0,
509	OTOSIN(omsg, addr)->sin_addr.s_addr,
510	OTOSIN(omsg, addr)->sin_port,
511	SS_FACCEPTONCE);
512	req->next = req_tbl;
513	req_tbl = req;
514	}
515
516	/* replace port number in addr field */
517	addrlen = sizeof(addr);
518	getsockname(req->tcp_so->s,
519	(struct sockaddr *) &addr,
520	&addrlen);
521	OTOSIN(omsg, addr)->sin_port = addr.sin_port;
522	OTOSIN(omsg, addr)->sin_addr = our_addr;
523	OTOSIN(nmsg, addr)->sin_port = addr.sin_port;
524	OTOSIN(nmsg, addr)->sin_addr = our_addr;
525
526	/* send LEAVE_INVITEs */
527	temp_port = OTOSIN(omsg, ctl_addr)->sin_port;
528	OTOSIN(omsg, ctl_addr)->sin_port = 0;
529	OTOSIN(nmsg, ctl_addr)->sin_port = 0;
530	omsg->type = nmsg->type = LEAVE_INVITE;
531
532	s = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
533	addr.sin_addr = our_addr;
534	addr.sin_family = AF_INET;
535	addr.sin_port = htons(517);
536	sendto(s, (char )omsg, sizeof(omsg), 0,
537	(struct sockaddr *)&addr, sizeof(addr));
538	addr.sin_port = htons(518);
539	sendto(s, (char )nmsg, sizeof(nmsg), 0,
540	(struct sockaddr *) &addr, sizeof(addr));
541	closesocket(s) ;
542
543	omsg->type = nmsg->type = ANNOUNCE;
544	OTOSIN(omsg, ctl_addr)->sin_port = temp_port;
545	OTOSIN(nmsg, ctl_addr)->sin_port = temp_port;
546	}
547
548	/*
549	* If it is a DELETE message, we send a copy to the
550	* local daemons. Then we delete the entry corresponding
551	* to our socket from the request table.
552	*/
553
554	if (type == DELETE) {
555	struct talk_request temp_req, req_next;
556	int s;
557	u_short temp_port;
558
559	temp_port = OTOSIN(omsg, ctl_addr)->sin_port;
560	OTOSIN(omsg, ctl_addr)->sin_port = 0;
561	OTOSIN(nmsg, ctl_addr)->sin_port = 0;
562
563	s = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
564	addr.sin_addr = our_addr;
565	addr.sin_family = AF_INET;
566	addr.sin_port = htons(517);
567	sendto(s, (char )omsg, sizeof(omsg), 0,
568	(struct sockaddr *)&addr, sizeof(addr));
569	addr.sin_port = htons(518);
570	sendto(s, (char )nmsg, sizeof(nmsg), 0,
571	(struct sockaddr *)&addr, sizeof(addr));
572	closesocket(s);
573
574	OTOSIN(omsg, ctl_addr)->sin_port = temp_port;
575	OTOSIN(nmsg, ctl_addr)->sin_port = temp_port;
576
577	/* delete table entry */
578	if (so == req_tbl->udp_so) {
579	temp_req = req_tbl;
580	req_tbl = req_tbl->next;
581	free(temp_req);
582	} else {
583	temp_req = req_tbl;
584	for(req = req_tbl->next; req; req = req_next) {
585	req_next = req->next;
586	if (so == req->udp_so) {
587	temp_req->next = req_next;
588	free(req);
589	break;
590	} else {
591	temp_req = req;
592	}
593	}
594	}
595	}
596
597	return;
598	#endif
599
600	case EMU_CUSEEME:
601
602	/*
603	* Cu-SeeMe emulation.
604	* Hopefully the packet is more that 16 bytes long. We don't
605	* do any other tests, just replace the address and port
606	* fields.
607	*/
608	if (m->m_len >= sizeof (*cu_head)) {
609	if (getsockname(so->s, (struct sockaddr *)&addr, &addrlen) < 0)
610	return;
611	cu_head = mtod(m, struct cu_header *);
612	cu_head->s_port = addr.sin_port;
613	cu_head->so_addr = our_addr.s_addr;
614	}
615
616	return;
617	}
618	}
619
620	struct socket *
621	udp_listen(PNATState pData, u_int port, u_int32_t laddr, u_int lport, int flags)
622	{
623	struct sockaddr_in addr;
624	struct socket *so;
625	socklen_t addrlen = sizeof(struct sockaddr_in);
626	int opt = 1;
627
628	if ((so = socreate()) == NULL) {
629	free(so);
630	return NULL;
631	}
632	so->s = socket(AF_INET,SOCK_DGRAM,0);
633	so->so_expire = curtime + SO_EXPIRE;
634	insque(pData, so,&udb);
635
636	addr.sin_family = AF_INET;
637	addr.sin_addr.s_addr = INADDR_ANY;
638	addr.sin_port = port;
639
640	if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) {
641	udp_detach(pData, so);
642	return NULL;
643	}
644	setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
645	/* setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char )&opt,sizeof(int)); /
646
647	getsockname(so->s,(struct sockaddr *)&addr,&addrlen);
648	so->so_fport = addr.sin_port;
649	if (addr.sin_addr.s_addr == 0 \|\| addr.sin_addr.s_addr == loopback_addr.s_addr)
650	so->so_faddr = alias_addr;
651	else
652	so->so_faddr = addr.sin_addr;
653
654	so->so_lport = lport;
655	so->so_laddr.s_addr = laddr;
656	if (flags != SS_FACCEPTONCE)
657	so->so_expire = 0;
658
659	so->so_state = SS_ISFCONNECTED;
660
661	return so;
662	}

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source: vbox/trunk/src/VBox/Devices/Network/slirp/udp.c@ 5642

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