slirp.h@ 61198

Last change on this file since 61198 was 60142, checked in by vboxsync, 9 years ago
NAT: Make host resolver asynchronous so that a blocked synchronous lookup doesn't stop the whole tcp/ip stack.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 12.7 KB

Line
1	/* $Id: slirp.h 60142 2016-03-22 21:44:59Z vboxsync $ */
2	/** @file
3	* NAT - slirp (declarations/defines).
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 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	#ifndef __COMMON_H__
19	#define __COMMON_H__
20
21	#include <VBox/vmm/stam.h>
22
23	#ifdef RT_OS_WINDOWS
24	# include <winsock2.h>
25	# include <ws2tcpip.h>
26	typedef int socklen_t;
27	#endif
28	#ifdef RT_OS_OS2 /* temporary workaround, see ticket #127 */
29	# define mbstat mbstat_os2
30	# include <sys/socket.h>
31	# undef mbstat
32	typedef int socklen_t;
33	#endif
34
35	#define CONFIG_QEMU
36
37	#ifdef DEBUG
38	# undef DEBUG
39	# define DEBUG 1
40	#endif
41
42	#ifndef CONFIG_QEMU
43	# include "version.h"
44	#endif
45	#define LOG_GROUP LOG_GROUP_DRV_NAT
46	#include <VBox/log.h>
47	#include <iprt/mem.h>
48	#ifdef RT_OS_WINDOWS
49	# include <windows.h>
50	# include <io.h>
51	#endif
52	#include <iprt/asm.h>
53	#include <iprt/assert.h>
54	#include <iprt/string.h>
55	#include <iprt/dir.h>
56	#include <iprt/rand.h>
57	#include <iprt/net.h>
58	#include <VBox/types.h>
59
60	#undef malloc
61	#define malloc dont_use_malloc
62	#undef free
63	#define free dont_use_free
64	#undef realloc
65	#define realloc dont_use_realloc
66	#undef strdup
67	#define strdup dont_use_strdup
68
69	#include "slirp_config.h"
70
71	#ifdef RT_OS_WINDOWS
72
73	# ifndef _MSC_VER
74	# include <inttypes.h>
75	# endif
76
77
78	# include <sys/timeb.h>
79	# include <iphlpapi.h>
80
81	/* We don't want the errno.h versions of these error defines. */
82	# if defined(_MSC_VER) && _MSC_VER >= 1600
83	# include <errno.h>
84	# undef EWOULDBLOCK
85	# undef EINPROGRESS
86	# undef ENOTCONN
87	# undef EHOSTUNREACH
88	# undef ENETUNREACH
89	# undef ECONNREFUSED
90	# undef ECONNRESET
91	# undef EHOSTDOWN
92	# undef ENETDOWN
93	# endif
94	# define EWOULDBLOCK WSAEWOULDBLOCK
95	# define EINPROGRESS WSAEINPROGRESS
96	# define ENOTCONN WSAENOTCONN
97	# define EHOSTUNREACH WSAEHOSTUNREACH
98	# define ENETUNREACH WSAENETUNREACH
99	# define ECONNREFUSED WSAECONNREFUSED
100	# define ECONNRESET WSAECONNRESET
101	# define EHOSTDOWN WSAEHOSTDOWN
102	# define ENETDOWN WSAENETDOWN
103
104	typedef uint8_t u_int8_t;
105	typedef uint16_t u_int16_t;
106	typedef uint32_t u_int32_t;
107
108	#else /* !RT_OS_WINDOWS */
109
110	# define ioctlsocket ioctl
111	# define closesocket(s) close(s)
112	# define O_BINARY 0
113
114	#endif /* !RT_OS_WINDOWS */
115
116	#if defined(RT_OS_WINDOWS) \|\| defined (RT_OS_SOLARIS)
117	typedef uint64_t u_int64_t;
118	typedef char *caddr_t;
119	#endif
120
121	#include <sys/types.h>
122	#ifdef HAVE_SYS_BITYPES_H
123	# include <sys/bitypes.h>
124	#endif
125
126	#ifdef _MSC_VER
127	# include <time.h>
128	#else /* !_MSC_VER */
129	# include <sys/time.h>
130	#endif /* !_MSC_VER */
131
132	#ifdef NEED_TYPEDEFS
133	typedef char int8_t;
134	typedef unsigned char u_int8_t;
135
136	# if SIZEOF_SHORT == 2
137	typedef short int16_t;
138	typedef unsigned short u_int16_t;
139	# else
140	# if SIZEOF_INT == 2
141	typedef int int16_t;
142	typedef unsigned int u_int16_t;
143	# else
144	#error Cannot find a type with sizeof() == 2
145	# endif
146	# endif
147
148	# if SIZEOF_SHORT == 4
149	typedef short int32_t;
150	typedef unsigned short u_int32_t;
151	# else
152	# if SIZEOF_INT == 4
153	typedef int int32_t;
154	typedef unsigned int u_int32_t;
155	# else
156	#error Cannot find a type with sizeof() == 4
157	# endif
158	# endif
159	#endif /* NEED_TYPEDEFS */
160
161	#ifdef HAVE_UNISTD_H
162	# include <unistd.h>
163	#endif
164
165	#ifdef HAVE_STDLIB_H
166	# include <stdlib.h>
167	#endif
168
169	#include <errno.h>
170
171
172	#ifndef HAVE_MEMMOVE
173	# define memmove(x, y, z) bcopy(y, x, z)
174	#endif
175
176	#if TIME_WITH_SYS_TIME
177	# include <sys/time.h>
178	# include <time.h>
179	#else
180	# if HAVE_SYS_TIME_H
181	# include <sys/time.h>
182	# else
183	# include <time.h>
184	# endif
185	#endif
186
187	#ifdef HAVE_STRING_H
188	# include <string.h>
189	#else
190	# include <strings.h>
191	#endif
192
193	#ifndef RT_OS_WINDOWS
194	# include <sys/uio.h>
195	#endif
196
197	#ifndef RT_OS_WINDOWS
198	# include <netinet/in.h>
199	# include <arpa/inet.h>
200	#endif
201
202	#ifdef GETTIMEOFDAY_ONE_ARG
203	# define gettimeofday(x, y) gettimeofday(x)
204	#endif
205
206	#ifndef HAVE_INET_ATON
207	int inet_aton (const char cp, struct in_addr ia);
208	#endif
209
210	#include <fcntl.h>
211	#ifndef NO_UNIX_SOCKETS
212	# include <sys/un.h>
213	#endif
214	#include <signal.h>
215	#ifdef HAVE_SYS_SIGNAL_H
216	# include <sys/signal.h>
217	#endif
218	#ifndef RT_OS_WINDOWS
219	# include <sys/socket.h>
220	#endif
221
222	#if defined(HAVE_SYS_IOCTL_H)
223	# include <sys/ioctl.h>
224	#endif
225
226	#ifdef HAVE_SYS_SELECT_H
227	# include <sys/select.h>
228	#endif
229
230	#ifdef HAVE_SYS_WAIT_H
231	# include <sys/wait.h>
232	#endif
233
234	#ifdef HAVE_SYS_FILIO_H
235	# include <sys/filio.h>
236	#endif
237
238	#if defined(__STDC__) \|\| defined(_MSC_VER)
239	# include <stdarg.h>
240	#else
241	# include <varargs.h>
242	#endif
243
244	#include <sys/stat.h>
245
246	/* Avoid conflicting with the libc insque() and remque(), which
247	* have different prototypes. */
248	#define insque slirp_insque
249	#define remque slirp_remque
250
251	#ifdef HAVE_SYS_STROPTS_H
252	# include <sys/stropts.h>
253	#endif
254
255	#include "libslirp.h"
256
257	#include "debug.h"
258
259	#include "ip.h"
260	#include "tcp.h"
261	#include "tcp_timer.h"
262	#include "tcp_var.h"
263	#include "tcpip.h"
264	#include "udp.h"
265	#include "icmp_var.h"
266	#include "mbuf.h"
267	#include "if.h"
268	#include "sbuf.h"
269	#include "socket.h"
270	#include "main.h"
271	#include "misc.h"
272	#include "ctl.h"
273	#include "bootp.h"
274	#include "tftp.h"
275
276	#include "slirp_state.h"
277	#include "slirp_dns.h"
278
279	#undef PVM /* XXX Mac OS X hack */
280
281	#ifndef NULL
282	# define NULL (void *)0
283	#endif
284
285	void if_start (PNATState);
286
287	#ifndef HAVE_INDEX
288	char index (const char , int);
289	#endif
290
291	#ifndef HAVE_GETHOSTID
292	long gethostid (void);
293	#endif
294
295	#ifndef RT_OS_WINDOWS
296	#include <netdb.h>
297	#endif
298
299	#include "dnsproxy/dnsproxy.h"
300
301	#define DEFAULT_BAUD 115200
302
303	int get_dns_addr(PNATState pData);
304
305	/* cksum.c */
306	typedef uint16_t u_short;
307	typedef unsigned int u_int;
308	#include "in_cksum.h"
309
310	/* if.c */
311	void if_init (PNATState);
312	void if_output (PNATState, struct socket , struct mbuf );
313
314	/* ip_input.c */
315	void ip_init (PNATState);
316	void ip_input (PNATState, struct mbuf *);
317	struct mbuf * ip_reass (PNATState, register struct mbuf *);
318	void ip_freef (PNATState, struct ipqhead , struct ipq_t );
319	void ip_slowtimo (PNATState);
320	void ip_stripoptions (register struct mbuf , struct mbuf );
321
322	/* ip_output.c */
323	int ip_output (PNATState, struct socket , struct mbuf );
324	int ip_output0 (PNATState, struct socket , struct mbuf , int urg);
325
326	/* tcp_input.c */
327	int tcp_reass (PNATState, struct tcpcb , struct tcphdr , int , struct mbuf );
328	void tcp_input (PNATState, register struct mbuf , int, struct socket );
329	void tcp_fconnect_failed(PNATState, struct socket *, int);
330	void tcp_dooptions (PNATState, struct tcpcb , u_char , int, struct tcpiphdr *);
331	void tcp_xmit_timer (PNATState, register struct tcpcb *, int);
332	int tcp_mss (PNATState, register struct tcpcb *, u_int);
333
334	/* tcp_output.c */
335	int tcp_output (PNATState, register struct tcpcb *);
336	void tcp_setpersist (register struct tcpcb *);
337
338	/* tcp_subr.c */
339	void tcp_init (PNATState);
340	void tcp_template (struct tcpcb *);
341	void tcp_respond (PNATState, struct tcpcb , register struct tcpiphdr , register struct mbuf *, tcp_seq, tcp_seq, int);
342	struct tcpcb * tcp_newtcpcb (PNATState, struct socket *);
343	struct tcpcb * tcp_close (PNATState, register struct tcpcb *);
344	void tcp_drain (void);
345	void tcp_sockclosed (PNATState, struct tcpcb *);
346	int tcp_fconnect (PNATState, struct socket *);
347	void tcp_connect (PNATState, struct socket *);
348	int tcp_attach (PNATState, struct socket *);
349	u_int8_t tcp_tos (struct socket *);
350	int tcp_ctl (PNATState, struct socket *);
351	struct tcpcb tcp_drop(PNATState, struct tcpcb tp, int err);
352
353	/* hostres.c */
354	struct mbuf hostresolver(PNATState, struct mbuf , uint32_t src, uint16_t sport);
355
356	/slirp.c/
357	void slirp_arp_who_has(PNATState pData, uint32_t dst);
358	int slirp_arp_cache_update_or_add(PNATState pData, uint32_t dst, const uint8_t *mac);
359	int slirp_init_dns_list(PNATState pData);
360	void slirp_release_dns_list(PNATState pData);
361	#define MIN_MRU 128
362	#define MAX_MRU 16384
363
364	#ifndef RT_OS_WINDOWS
365	# define min(x, y) ((x) < (y) ? (x) : (y))
366	# define max(x, y) ((x) > (y) ? (x) : (y))
367	#endif
368
369	#ifdef RT_OS_WINDOWS
370	# undef errno
371	# if 0 /* debugging */
372	int errno_func(const char *file, int line);
373	# define errno (errno_func(__FILE__, __LINE__))
374	# else
375	# define errno (WSAGetLastError())
376	# endif
377	#endif
378
379	# define ETH_ALEN 6
380	# define ETH_HLEN 14
381
382	# define ARPOP_REQUEST 1 /* ARP request */
383	# define ARPOP_REPLY 2 /* ARP reply */
384
385	struct ethhdr
386	{
387	unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
388	unsigned char h_source[ETH_ALEN]; /* source ether addr */
389	unsigned short h_proto; /* packet type ID field */
390	};
391	AssertCompileSize(struct ethhdr, 14);
392
393	/*
394	* (vvl) externing of sscanf.
395	*/
396	int sscanf(const char s, const char format, ...);
397
398	#if defined(VBOX_SLIRP_ALIAS) \|\| defined(VBOX_SLIRP_BSD)
399
400	# define ip_next(ip) (void )((uint8_t )(ip) + ((ip)->ip_hl << 2))
401	# define udp_next(udp) (void )((uint8_t )&((struct udphdr *)(udp))[1])
402	# define bcopy(src, dst, len) memcpy((dst), (src), (len))
403	# define bcmp(a1, a2, len) memcmp((a1), (a2), (len))
404	# define NO_FW_PUNCH
405	/* Two wrongs don't make a right, but this at least averts harm. */
406	# define NO_USE_SOCKETS
407
408	# ifdef alias_addr
409	# ifndef VBOX_SLIRP_BSD
410	# error alias_addr has already defined!!!
411	# else
412	# undef alias_addr
413	# endif
414	# endif
415
416	# define arc4random() RTRandU32()
417	# undef malloc
418	# undef calloc
419	# undef free
420	# define malloc(x) RTMemAlloc((x))
421	# define calloc(x, n) RTMemAllocZ((x)*(n))
422	# define free(x) RTMemFree((x))
423	# ifndef __unused
424	# define __unused
425	# endif
426
427	# define strncasecmp RTStrNICmp
428	# define stderr NULL
429	# define stdout NULL
430
431	# ifdef VBOX_WITH_DEBUG_LIBALIAS
432	# define LIBALIAS_DEBUG
433	# endif
434
435	# define fflush(x) do{} while(0)
436	# include "ext.h"
437	#endif /VBOX_SLIRP_ALIAS/
438
439	/**
440	* @todo might be useful to make it configurable, especially in terms of Intnet behind NAT
441	*/
442	# define maxusers 32
443	# define max_protohdr 0
444	/**
445	* @todo (vvl) for now ignore these values, later perhaps initialize tuning parameters
446	*/
447	# define TUNABLE_INT_FETCH(name, pval) do { } while (0)
448	# define SYSCTL_PROC(a0, a1, a2, a3, a4, a5, a6, a7, a8) const int dummy_ ## a6 = 0
449	# define SYSCTL_STRUCT(a0, a1, a2, a3, a4, a5, a6) const int dummy_ ## a5 = 0
450	# define SYSINIT(a0, a1, a2, a3, a4) const int dummy_ ## a3 = 0
451	# define sysctl_handle_int(a0, a1, a2, a3) 0
452	# define EVENTHANDLER_INVOKE(a) do{}while(0)
453	# define EVENTHANDLER_REGISTER(a0, a1, a2, a3) do{}while(0)
454	# define KASSERT AssertMsg
455
456	struct dummy_req
457	{
458	void *newptr;
459	};
460
461	#define SYSCTL_HANDLER_ARGS PNATState pData, void oidp, struct dummy_req req
462
463	void mbuf_init(void *);
464	# define cksum(m, len) in_cksum_skip((m), (len), 0)
465
466	int ftp_alias_load(PNATState);
467	int ftp_alias_unload(PNATState);
468	int nbt_alias_load(PNATState);
469	int nbt_alias_unload(PNATState);
470	int slirp_arp_lookup_ip_by_ether(PNATState, const uint8_t , uint32_t );
471	int slirp_arp_lookup_ether_by_ip(PNATState, uint32_t, uint8_t *);
472
473	static inline size_t slirp_size(PNATState pData)
474	{
475	if (if_mtu < MSIZE)
476	return MCLBYTES;
477	else if (if_mtu < MCLBYTES)
478	return MCLBYTES;
479	else if (if_mtu < MJUM9BYTES)
480	return MJUM9BYTES;
481	else if (if_mtu < MJUM16BYTES)
482	return MJUM16BYTES;
483	else
484	AssertMsgFailed(("Unsupported size"));
485	return 0;
486	}
487
488	static inline bool slirpMbufTagService(PNATState pData, struct mbuf *m, uint8_t u8ServiceId)
489	{
490	struct m_tag * t = NULL;
491	NOREF(pData);
492	/* if_encap assumes that all packets goes through aliased address(gw) */
493	if (u8ServiceId == CTL_ALIAS)
494	return true;
495	t = m_tag_get(PACKET_SERVICE, sizeof(uint8_t), 0);
496	if (!t)
497	return false;
498	(uint8_t )&t[1] = u8ServiceId;
499	m_tag_prepend(m, t);
500	return true;
501	}
502
503	/**
504	* This function tags mbuf allocated for special services.
505	* @todo: add service id verification.
506	*/
507	static inline struct mbuf *slirpServiceMbufAlloc(PNATState pData, uint8_t u8ServiceId)
508	{
509	struct mbuf *m = NULL;
510	m = m_getcl(pData, M_DONTWAIT, MT_HEADER, M_PKTHDR);
511	if (!m)
512	return m;
513	if(!slirpMbufTagService(pData, m, u8ServiceId))
514	{
515	m_freem(pData, m);
516	return NULL;
517	}
518	return m;
519	}
520
521	static inline struct mbuf *slirpTftpMbufAlloc(PNATState pData)
522	{
523	return slirpServiceMbufAlloc(pData, CTL_TFTP);
524	}
525	static inline struct mbuf *slirpDnsMbufAlloc(PNATState pData)
526	{
527	return slirpServiceMbufAlloc(pData, CTL_DNS);
528	}
529
530	DECLINLINE(bool) slirpIsWideCasting(PNATState pData, uint32_t u32Addr)
531	{
532	bool fWideCasting = false;
533	LogFlowFunc(("Enter: u32Addr:%RTnaipv4\n", u32Addr));
534	fWideCasting = ( u32Addr == INADDR_BROADCAST
535	\|\| (u32Addr & RT_H2N_U32_C(~pData->netmask)) == RT_H2N_U32_C(~pData->netmask));
536	LogFlowFunc(("Leave: %RTbool\n", fWideCasting));
537	return fWideCasting;
538	}
539	#endif
540

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source: vbox/trunk/src/VBox/Devices/Network/slirp/slirp.h@ 61198

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