intnet.h@ 17662

Last change on this file since 17662 was 17184, checked in by vboxsync, 16 years ago
VBoxNetFlt: review of core changes, several review comments needing follow up. untested
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1	/** @file
2	* INETNET - Internal Networking.
3	*/
4
5	/*
6	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*
25	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
26	* Clara, CA 95054 USA or visit http://www.sun.com if you need
27	* additional information or have any questions.
28	*/
29
30	#ifndef ___VBox_intnet_h
31	#define ___VBox_intnet_h
32
33	#include <VBox/types.h>
34	#include <VBox/stam.h>
35	#include <VBox/sup.h>
36	#include <iprt/assert.h>
37	#include <iprt/asm.h>
38
39	__BEGIN_DECLS
40
41
42	/** Pointer to an internal network ring-0 instance. */
43	typedef struct INTNET *PINTNET;
44
45	/**
46	* Generic two-sided ring buffer.
47	*
48	* The deal is that there is exactly one writer and one reader.
49	* When offRead equals offWrite the buffer is empty. In the other
50	* extreme the writer will not use the last free byte in the buffer.
51	*/
52	typedef struct INTNETRINGBUF
53	{
54	/** The start of the buffer offset relative to the. (inclusive) */
55	uint32_t offStart;
56	/** The offset to the end of the buffer. (exclusive) */
57	uint32_t offEnd;
58	/** The current read offset. */
59	uint32_t volatile offRead;
60	/** The current write offset. */
61	uint32_t volatile offWrite;
62	} INTNETRINGBUF;
63	/** Pointer to a ring buffer. */
64	typedef INTNETRINGBUF *PINTNETRINGBUF;
65
66	/**
67	* Get the amount of space available for writing.
68	*
69	* @returns Number of available bytes.
70	* @param pRingBuf The ring buffer.
71	*/
72	DECLINLINE(uint32_t) INTNETRingGetWritable(PINTNETRINGBUF pRingBuf)
73	{
74	return pRingBuf->offRead <= pRingBuf->offWrite
75	? pRingBuf->offEnd - pRingBuf->offWrite + pRingBuf->offRead - pRingBuf->offStart - 1
76	: pRingBuf->offRead - pRingBuf->offWrite - 1;
77	}
78
79
80	/**
81	* Get the amount of data ready for reading.
82	*
83	* @returns Number of ready bytes.
84	* @param pRingBuf The ring buffer.
85	*/
86	DECLINLINE(uint32_t) INTNETRingGetReadable(PINTNETRINGBUF pRingBuf)
87	{
88	return pRingBuf->offRead <= pRingBuf->offWrite
89	? pRingBuf->offWrite - pRingBuf->offRead
90	: pRingBuf->offEnd - pRingBuf->offRead + pRingBuf->offWrite - pRingBuf->offStart;
91	}
92
93
94	/**
95	* A interface buffer.
96	*/
97	typedef struct INTNETBUF
98	{
99	/** The size of the entire buffer. */
100	uint32_t cbBuf;
101	/** The size of the send area. */
102	uint32_t cbSend;
103	/** The size of the receive area. */
104	uint32_t cbRecv;
105	/** The receive buffer. */
106	INTNETRINGBUF Recv;
107	/** The send buffer. */
108	INTNETRINGBUF Send;
109	/** Number of times yields help solve an overflow. */
110	STAMCOUNTER cStatYieldsOk;
111	/** Number of times yields didn't help solve an overflow. */
112	STAMCOUNTER cStatYieldsNok;
113	/** Number of lost packets due to overflows. */
114	STAMCOUNTER cStatLost;
115	/** Number of packets received (not counting lost ones). */
116	STAMCOUNTER cStatRecvs;
117	/** Number of frame bytes received (not couting lost frames). */
118	STAMCOUNTER cbStatRecv;
119	/** Number of packets received. */
120	STAMCOUNTER cStatSends;
121	/** Number of frame bytes sent. */
122	STAMCOUNTER cbStatSend;
123	} INTNETBUF;
124	/** Pointer to an interface buffer. */
125	typedef INTNETBUF *PINTNETBUF;
126	/** Pointer to a const interface buffer. */
127	typedef INTNETBUF const *PCINTNETBUF;
128
129	/** Internal networking interface handle. */
130	typedef uint32_t INTNETIFHANDLE;
131	/** Pointer to an internal networking interface handle. */
132	typedef INTNETIFHANDLE *PINTNETIFHANDLE;
133
134	/** Or mask to obscure the handle index. */
135	#define INTNET_HANDLE_MAGIC 0x88880000
136	/** Mask to extract the handle index. */
137	#define INTNET_HANDLE_INDEX_MASK 0xffff
138	/** The maximum number of handles (exclusive) */
139	#define INTNET_HANDLE_MAX 0xffff
140	/** Invalid handle. */
141	#define INTNET_HANDLE_INVALID (0)
142
143
144	/**
145	* The packet header.
146	*
147	* The header is intentionally 8 bytes long. It will always
148	* start at an 8 byte aligned address. Assuming that the buffer
149	* size is a multiple of 8 bytes, that means that we can guarantee
150	* that the entire header is contiguous in both virtual and physical
151	* memory.
152	*/
153	#pragma pack(1)
154	typedef struct INTNETHDR
155	{
156	/** Header type. This is currently serving as a magic, it
157	* can be extended later to encode special command packets and stuff. */
158	uint16_t u16Type;
159	/** The size of the frame. */
160	uint16_t cbFrame;
161	/** The offset from the start of this header to where the actual frame starts.
162	* This is used to keep the frame it self continguous in virtual memory and
163	* thereby both simplify reading and */
164	int32_t offFrame;
165	} INTNETHDR;
166	#pragma pack()
167	/** Pointer to a packet header.*/
168	typedef INTNETHDR *PINTNETHDR;
169	/** Pointer to a const packet header.*/
170	typedef INTNETHDR const *PCINTNETHDR;
171
172	/** INTNETHDR::u16Type value for normal frames. */
173	#define INTNETHDR_TYPE_FRAME 0x2442
174
175
176	/**
177	* Calculates the pointer to the frame.
178	*
179	* @returns Pointer to the start of the frame.
180	* @param pHdr Pointer to the packet header
181	* @param pBuf The buffer the header is within. Only used in strict builds.
182	*/
183	DECLINLINE(void *) INTNETHdrGetFramePtr(PCINTNETHDR pHdr, PCINTNETBUF pBuf)
184	{
185	uint8_t pu8 = (uint8_t )pHdr + pHdr->offFrame;
186	#ifdef VBOX_STRICT
187	const uintptr_t off = (uintptr_t)pu8 - (uintptr_t)pBuf;
188	Assert(pHdr->u16Type == INTNETHDR_TYPE_FRAME);
189	Assert(off < pBuf->cbBuf);
190	Assert(off + pHdr->cbFrame <= pBuf->cbBuf);
191	#endif
192	NOREF(pBuf);
193	return pu8;
194	}
195
196
197	/**
198	* Skips to the next (read) frame in the buffer.
199	*
200	* @param pBuf The buffer.
201	* @param pRingBuf The ring buffer in question.
202	*/
203	DECLINLINE(void) INTNETRingSkipFrame(PINTNETBUF pBuf, PINTNETRINGBUF pRingBuf)
204	{
205	uint32_t offRead = pRingBuf->offRead;
206	PINTNETHDR pHdr = (PINTNETHDR)((uint8_t *)pBuf + offRead);
207	Assert(pRingBuf->offRead < pBuf->cbBuf);
208	Assert(pRingBuf->offRead >= pRingBuf->offStart);
209	Assert(pRingBuf->offRead < pRingBuf->offEnd);
210
211	/* skip the frame */
212	offRead += pHdr->offFrame + pHdr->cbFrame;
213	offRead = RT_ALIGN_32(offRead, sizeof(INTNETHDR));
214	Assert(offRead <= pRingBuf->offEnd && offRead >= pRingBuf->offStart);
215	if (offRead >= pRingBuf->offEnd)
216	offRead = pRingBuf->offStart;
217	ASMAtomicXchgU32(&pRingBuf->offRead, offRead);
218	}
219
220
221	/**
222	* Scatter / Gather segment (internal networking).
223	*/
224	typedef struct INTNETSEG
225	{
226	/** The physical address. NIL_RTHCPHYS is not set. */
227	RTHCPHYS Phys;
228	/** Pointer to the segment data. */
229	void *pv;
230	/** The segment size. */
231	uint32_t cb;
232	} INTNETSEG;
233	/** Pointer to a internal networking packet segment. */
234	typedef INTNETSEG *PINTNETSEG;
235	/** Pointer to a internal networking packet segment. */
236	typedef INTNETSEG const *PCINTNETSEG;
237
238
239	/**
240	* Scatter / Gather list (internal networking).
241	*
242	* This is used when communicating with the trunk port.
243	*/
244	typedef struct INTNETSG
245	{
246	/** Owner data, don't touch! */
247	void *pvOwnerData;
248	/** User data. */
249	void *pvUserData;
250	/** User data 2 in case anyone needs it. */
251	void *pvUserData2;
252	/** The total length of the scatter gather list. */
253	uint32_t cbTotal;
254	/** The number of users (references).
255	* This is used by the SGRelease code to decide when it can be freed. */
256	uint16_t volatile cUsers;
257	/** Flags, see INTNETSG_FLAGS_* */
258	uint16_t volatile fFlags;
259	/** The number of segments allocated. */
260	uint16_t cSegsAlloc;
261	/** The number of segments actually used. */
262	uint16_t cSegsUsed;
263	/** Variable sized list of segments. */
264	INTNETSEG aSegs[1];
265	} INTNETSG;
266	/** Pointer to a scatter / gather list. */
267	typedef INTNETSG *PINTNETSG;
268	/** Pointer to a const scatter / gather list. */
269	typedef INTNETSG const *PCINTNETSG;
270
271	/** @name INTNETSG::fFlags definitions.
272	* @{ */
273	/** Set if the SG is free. */
274	#define INTNETSG_FLAGS_FREE RT_BIT_32(1)
275	/** Set if the SG is a temporary one that will become invalid upon return.
276	* Try to finish using it before returning, and if that's not possible copy
277	* to other buffers.
278	* When not set, the callee should always free the SG.
279	* Attempts to free it made by the callee will be quietly ignored. */
280	#define INTNETSG_FLAGS_TEMP RT_BIT_32(2)
281	/** ARP packet, IPv4 + MAC.
282	* @internal */
283	#define INTNETSG_FLAGS_ARP_IPV4 RT_BIT_32(3)
284	/** Copied to the temporary buffer.
285	* @internal */
286	#define INTNETSG_FLAGS_PKT_CP_IN_TMP RT_BIT_32(4)
287	/** @} */
288
289
290	/** @name Direction (packet source or destination)
291	* @{ */
292	/** To/From the wire. */
293	#define INTNETTRUNKDIR_WIRE RT_BIT_32(0)
294	/** To/From the host. */
295	#define INTNETTRUNKDIR_HOST RT_BIT_32(1)
296	/** Mask of valid bits. */
297	#define INTNETTRUNKDIR_VALID_MASK UINT32_C(3)
298	/** @} */
299
300
301	/** Pointer to the switch side of a trunk port. */
302	typedef struct INTNETTRUNKSWPORT *PINTNETTRUNKSWPORT;
303	/**
304	* This is the port on the internal network 'switch', i.e.
305	* what the driver is connected to.
306	*
307	* This is only used for the in-kernel trunk connections.
308	*/
309	typedef struct INTNETTRUNKSWPORT
310	{
311	/** Structure version number. (INTNETTRUNKSWPORT_VERSION) */
312	uint32_t u32Version;
313
314	/**
315	* Selects whether outgoing SGs should have their physical address set.
316	*
317	* By enabling physical addresses in the scatter / gather segments it should
318	* be possible to save some unnecessary address translation and memory locking
319	* in the network stack. (Internal networking knows the physical address for
320	* all the INTNETBUF data and that it's locked memory.) There is a negative
321	* side effects though, frames that crosses page boundraries will require
322	* multiple scather / gather segments.
323	*
324	* @returns The old setting.
325	*
326	* @param pSwitchPort Pointer to this structure.
327	* @param fEnable Whether to enable or disable it.
328	*
329	* @remarks Will grab the network semaphore.
330	*/
331	DECLR0CALLBACKMEMBER(bool, pfnSetSGPhys,(PINTNETTRUNKSWPORT pSwitchPort, bool fEnable));
332
333	/**
334	* Incoming frame.
335	*
336	* The frame may be modified when the trunk port on the switch is set to share
337	* the mac address of the host when hitting the wire. Currently rames containing
338	* ARP packets are subject to this, later other protocols like NDP/ICMPv6 may
339	* need editing as well when operating in this mode.
340	*
341	* @returns true if we've handled it and it should be dropped.
342	* false if it should hit the wire.
343	*
344	* @param pSwitchPort Pointer to this structure.
345	* @param pSG The (scatter /) gather structure for the frame.
346	* This will only be use during the call, so a temporary one can
347	* be used. The Phys member will not be used.
348	* @param fSrc Where this frame comes from. Only one bit should be set!
349	*
350	* @remarks Will grab the network semaphore.
351	*
352	* @remarks NAT and TAP will use this interface.
353	*
354	* @todo Do any of the host require notification before frame modifications? If so,
355	* we'll add a callback to INTNETTRUNKIFPORT for this (pfnSGModifying) and
356	* a SG flag.
357	*/
358	DECLR0CALLBACKMEMBER(bool, pfnRecv,(PINTNETTRUNKSWPORT pSwitchPort, PINTNETSG pSG, uint32_t fSrc));
359
360	/**
361	* Retain a SG.
362	*
363	* @param pSwitchPort Pointer to this structure.
364	* @param pSG Pointer to the (scatter /) gather structure.
365	*
366	* @remarks Will not grab any locks.
367	*/
368	DECLR0CALLBACKMEMBER(void, pfnSGRetain,(PINTNETTRUNKSWPORT pSwitchPort, PINTNETSG pSG));
369
370	/**
371	* Release a SG.
372	*
373	* This is called by the pfnXmit code when done with a SG. This may safe
374	* be done in an asynchronous manner.
375	*
376	* @param pSwitchPort Pointer to this structure.
377	* @param pSG Pointer to the (scatter /) gather structure.
378	*
379	* @remarks Will grab the network semaphore.
380	*/
381	DECLR0CALLBACKMEMBER(void, pfnSGRelease,(PINTNETTRUNKSWPORT pSwitchPort, PINTNETSG pSG));
382
383	/** Structure version number. (INTNETTRUNKSWPORT_VERSION) */
384	uint32_t u32VersionEnd;
385	} INTNETTRUNKSWPORT;
386
387	/** Version number for the INTNETTRUNKIFPORT::u32Version and INTNETTRUNKIFPORT::u32VersionEnd fields. */
388	#define INTNETTRUNKSWPORT_VERSION UINT32_C(0xA2CDf001)
389
390
391	/** Pointer to the interface side of a trunk port. */
392	typedef struct INTNETTRUNKIFPORT *PINTNETTRUNKIFPORT;
393	/**
394	* This is the port on the trunk interface, i.e. the driver
395	* side which the internal network is connected to.
396	*
397	* This is only used for the in-kernel trunk connections.
398	*
399	* @remarks The internal network side is responsible for serializing all calls
400	* to this interface. This is (assumed) to be implemented using a lock
401	* that is only ever taken before a call to this interface. The lock
402	* is referred to as the out-bound trunk port lock.
403	*/
404	typedef struct INTNETTRUNKIFPORT
405	{
406	/** Structure version number. (INTNETTRUNKIFPORT_VERSION) */
407	uint32_t u32Version;
408
409	/**
410	* Retain the object.
411	*
412	* It will normally be called while owning the internal network semaphore.
413	*
414	* @param pIfPort Pointer to this structure.
415	*
416	* @remarks The caller may own any locks or none at all, we don't care.
417	*/
418	DECLR0CALLBACKMEMBER(void, pfnRetain,(PINTNETTRUNKIFPORT pIfPort));
419
420	/**
421	* Releases the object.
422	*
423	* This must be called for every pfnRetain call.
424	*
425	*
426	* @param pIfPort Pointer to this structure.
427	*
428	* @remarks Only the out-bound trunk port lock, unless the caller is certain the
429	* call is not going to cause destruction (wont happen).
430	*/
431	DECLR0CALLBACKMEMBER(void, pfnRelease,(PINTNETTRUNKIFPORT pIfPort));
432
433	/**
434	* Disconnect from the switch and release the object.
435	*
436	* The is the counter action of the
437	* INTNETTRUNKNETFLTFACTORY::pfnCreateAndConnect method.
438	*
439	* @param pIfPort Pointer to this structure.
440	*
441	* @remarks Called holding the out-bound trunk port lock.
442	*/
443	DECLR0CALLBACKMEMBER(void, pfnDisconnectAndRelease,(PINTNETTRUNKIFPORT pIfPort));
444
445	/**
446	* Changes the active state of the interface.
447	*
448	* The interface is created in the suspended (non-active) state and then activated
449	* when the VM/network is started. It may be suspended and re-activated later
450	* for various reasons. It will finally be suspended again before disconnecting
451	* the interface from the internal network, however, this might be done immediately
452	* before disconnecting and may leave an incoming frame waiting on the internal network
453	* semaphore. So, after the final suspend a pfnWaitForIdle is always called to make sure
454	* the interface is idle before pfnDisconnectAndRelease is called.
455	*
456	* A typical operation to performed by this method is to enable/disable promiscuous
457	* mode on the host network interface. (This is the reason we cannot call this when
458	* owning any semaphores.)
459	*
460	* @returns The previous state.
461	*
462	* @param pIfPort Pointer to this structure.
463	* @param fActive True if the new state is 'active', false if the new state is 'suspended'.
464	*
465	* @remarks Called holding the out-bound trunk port lock.
466	*/
467	DECLR0CALLBACKMEMBER(bool, pfnSetActive,(PINTNETTRUNKIFPORT pIfPort, bool fActive));
468
469	/**
470	* Waits for the interface to become idle.
471	*
472	* This method must be called before disconnecting and releasing the
473	* object in order to prevent racing incoming/outgoing packets and
474	* device enabling/disabling.
475	*
476	* @returns IPRT status code (see RTSemEventWait).
477	* @param pIfPort Pointer to this structure.
478	* @param cMillies The number of milliseconds to wait. 0 means
479	* no waiting at all. Use RT_INDEFINITE_WAIT for
480	* an indefinite wait.
481	*
482	* @remarks Called holding the out-bound trunk port lock.
483	*/
484	DECLR0CALLBACKMEMBER(int, pfnWaitForIdle,(PINTNETTRUNKIFPORT pIfPort, uint32_t cMillies));
485
486	/**
487	* Gets the MAC address of the host network interface that we're attached to.
488	*
489	* @param pIfPort Pointer to this structure.
490	* @param pMac Where to store the host MAC address.
491	*
492	* @remarks Called while owning the network and the out-bound trunk port semaphores.
493	*/
494	DECLR0CALLBACKMEMBER(void, pfnGetMacAddress,(PINTNETTRUNKIFPORT pIfPort, PRTMAC pMac));
495
496	/**
497	* Tests if the mac address belongs to any of the host NICs
498	* and should take the host route.
499	*
500	* @returns true / false.
501	*
502	* @param pIfPort Pointer to this structure.
503	* @param pMac Pointer to the mac address.
504	*
505	* @remarks Called while owning the network and the out-bound trunk port semaphores.
506	*
507	* @remarks TAP and NAT will compare with their own MAC address and let all their
508	* traffic take the host direction.
509	*
510	* @remarks This didn't quiet work out the way it should... perhaps obsolete this
511	* with pfnGetHostMac?
512	*/
513	DECLR0CALLBACKMEMBER(bool, pfnIsHostMac,(PINTNETTRUNKIFPORT pIfPort, PCRTMAC pMac));
514
515	/**
516	* Tests whether the host is operating the interface is promiscuous mode.
517	*
518	* The default behavior of the internal networking 'switch' is to 'autodetect'
519	* promiscuous mode on the trunk port, which is when this method is used.
520	* For security reasons this default may of course be overridden so that the
521	* host cannot sniff at what's going on.
522	*
523	* Note that this differs from operating the trunk port on the switch in
524	* 'promiscuous' mode, because that relates to the bits going to the wire.
525	*
526	* @returns true / false.
527	*
528	* @param pIfPort Pointer to this structure.
529	*
530	* @remarks Called while owning the network and the out-bound trunk port semaphores.
531	*/
532	DECLR0CALLBACKMEMBER(bool, pfnIsPromiscuous,(PINTNETTRUNKIFPORT pIfPort));
533
534	/**
535	* Transmit a frame.
536	*
537	* @return VBox status code. Error generally means we'll drop the packet.
538	* @param pIfPort Pointer to this structure.
539	* @param pSG Pointer to the (scatter /) gather structure for the frame.
540	* This may or may not be a temporary buffer. If it's temporary
541	* the transmit operation(s) then it's required to make a copy
542	* of the frame unless it can be transmitted synchronously.
543	* @param fDst The destination mask. At least one bit will be set.
544	*
545	* @remarks Called holding the out-bound trunk port lock.
546	*
547	* @remarks TAP and NAT will use this interface for all their traffic, see pfnIsHostMac.
548	*
549	* @todo
550	*/
551	DECLR0CALLBACKMEMBER(int, pfnXmit,(PINTNETTRUNKIFPORT pIfPort, PINTNETSG pSG, uint32_t fDst));
552
553	/** Structure version number. (INTNETTRUNKIFPORT_VERSION) */
554	uint32_t u32VersionEnd;
555	} INTNETTRUNKIFPORT;
556
557	/** Version number for the INTNETTRUNKIFPORT::u32Version and INTNETTRUNKIFPORT::u32VersionEnd fields. */
558	#define INTNETTRUNKIFPORT_VERSION UINT32_C(0xA2CDe001)
559
560
561	/**
562	* The component factory interface for create a network
563	* interface filter (like VBoxNetFlt).
564	*/
565	typedef struct INTNETTRUNKFACTORY
566	{
567	/**
568	* Release this factory.
569	*
570	* SUPR0ComponentQueryFactory (SUPDRVFACTORY::pfnQueryFactoryInterface to be precise)
571	* will retain a reference to the factory and the caller has to call this method to
572	* release it once the pfnCreateAndConnect call(s) has been done.
573	*
574	* @param pIfFactory Pointer to this structure.
575	*/
576	DECLR0CALLBACKMEMBER(void, pfnRelease,(struct INTNETTRUNKFACTORY *pIfFactory));
577
578	/**
579	* Create an instance for the specfied host interface and connects it
580	* to the internal network trunk port.
581	*
582	* The initial interface active state is false (suspended).
583	*
584	*
585	* @returns VBox status code.
586	* @retval VINF_SUCCESS and *ppIfPort set on success.
587	* @retval VERR_INTNET_FLT_IF_NOT_FOUND if the interface was not found.
588	* @retval VERR_INTNET_FLT_IF_BUSY if the interface is already connected.
589	* @retval VERR_INTNET_FLT_IF_FAILED if it failed for some other reason.
590	*
591	* @param pIfFactory Pointer to this structure.
592	* @param pszName The interface name (OS specific).
593	* @param pSwitchPort Pointer to the port interface on the switch that
594	* this interface is being connected to.
595	* @param fFlags Creation flags, see below.
596	* @param ppIfPort Where to store the pointer to the interface port
597	* on success.
598	*
599	* @remarks Called while owning the network and the out-bound trunk semaphores.
600	*/
601	DECLR0CALLBACKMEMBER(int, pfnCreateAndConnect,(struct INTNETTRUNKFACTORY pIfFactory, const char pszName,
602	PINTNETTRUNKSWPORT pSwitchPort, uint32_t fFlags,
603	PINTNETTRUNKIFPORT *ppIfPort));
604	} INTNETTRUNKFACTORY;
605	/** Pointer to the trunk factory. */
606	typedef INTNETTRUNKFACTORY *PINTNETTRUNKFACTORY;
607
608	/** The UUID for the (current) trunk factory. (case sensitive) */
609	#define INTNETTRUNKFACTORY_UUID_STR "449a2799-7564-464d-b4b2-7a877418fd0c"
610
611	/** @name INTNETTRUNKFACTORY::pfnCreateAndConnect flags.
612	* @{ */
613	/** Don't put the filtered interface in promiscuous mode.
614	* This is used for wireless interface since these can misbehave if
615	* we try to put them in promiscuous mode. (Wireless interfaces are
616	* normally bridged on level 3 instead of level 2.) */
617	#define INTNETTRUNKFACTORY_FLAG_NO_PROMISC RT_BIT_32(0)
618	/** @} */
619
620
621	/**
622	* The trunk connection type.
623	*
624	* Used by INTNETR0Open and assoicated interfaces.
625	*/
626	typedef enum INTNETTRUNKTYPE
627	{
628	/** Invalid trunk type. */
629	kIntNetTrunkType_Invalid = 0,
630	/** No trunk connection. */
631	kIntNetTrunkType_None,
632	/** We don't care which kind of trunk connection if the network exists,
633	* if it doesn't exist create it without a connection. */
634	kIntNetTrunkType_WhateverNone,
635	/** VirtualBox host network interface filter driver.
636	* The trunk name is the name of the host network interface. */
637	kIntNetTrunkType_NetFlt,
638	/** VirtualBox adapter host driver. */
639	kIntNetTrunkType_NetAdp,
640	/** Nat service (ring-0). */
641	kIntNetTrunkType_SrvNat,
642	/** The end of valid types. */
643	kIntNetTrunkType_End,
644	/** The usual 32-bit hack. */
645	kIntNetTrunkType_32bitHack = 0x7fffffff
646	} INTNETTRUNKTYPE;
647
648	/** @name INTNETR0Open flags.
649	* @{ */
650	/** Share the MAC address with the host when sending something to the wire via the trunk.
651	* This is typically used when the trunk is a NetFlt for a wireless interface. */
652	#define INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE RT_BIT_32(0)
653	/** Whether new participants should be subjected to access check or not. */
654	#define INTNET_OPEN_FLAGS_PUBLIC RT_BIT_32(1)
655	/** Ignore any requests for promiscuous mode. */
656	#define INTNET_OPEN_FLAGS_IGNORE_PROMISC RT_BIT_32(2)
657	/** Ignore any requests for promiscuous mode, quietly applied/ignored on open. */
658	#define INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC RT_BIT_32(3)
659	/** Ignore any requests for promiscuous mode on the trunk wire connection. */
660	#define INTNET_OPEN_FLAGS_IGNORE_PROMISC_TRUNK_WIRE RT_BIT_32(4)
661	/** Ignore any requests for promiscuous mode on the trunk wire connection, quietly applied/ignored on open. */
662	#define INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC_TRUNK_WIRE RT_BIT_32(5)
663	/** Ignore any requests for promiscuous mode on the trunk host connection. */
664	#define INTNET_OPEN_FLAGS_IGNORE_PROMISC_TRUNK_HOST RT_BIT_32(6)
665	/** Ignore any requests for promiscuous mode on the trunk host connection, quietly applied/ignored on open. */
666	#define INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC_TRUNK_HOST RT_BIT_32(7)
667	/** The mask of flags which causes flag incompatibilities. */
668	#define INTNET_OPEN_FLAGS_COMPATIBILITY_XOR_MASK (RT_BIT_32(0) \| RT_BIT_32(1) \| RT_BIT_32(2) \| RT_BIT_32(4) \| RT_BIT_32(6))
669	/** The mask of flags is always ORed in, even on open. (the quiet stuff) */
670	#define INTNET_OPEN_FLAGS_SECURITY_OR_MASK (RT_BIT_32(3) \| RT_BIT_32(5) \| RT_BIT_32(7))
671	/** The mask of valid flags. */
672	#define INTNET_OPEN_FLAGS_MASK UINT32_C(0x000000ff)
673	/** @} */
674
675	/** The maximum length of a network name. */
676	#define INTNET_MAX_NETWORK_NAME 128
677
678	/** The maximum length of a trunk name. */
679	#define INTNET_MAX_TRUNK_NAME 64
680
681
682	/**
683	* Request buffer for INTNETR0OpenReq / VMMR0_DO_INTNET_OPEN.
684	* @see INTNETR0Open.
685	*/
686	typedef struct INTNETOPENREQ
687	{
688	/** The request header. */
689	SUPVMMR0REQHDR Hdr;
690	/** Alternative to passing the taking the session from the VM handle.
691	* Either use this member or use the VM handle, don't do both. */
692	PSUPDRVSESSION pSession;
693	/** The network name. (input) */
694	char szNetwork[INTNET_MAX_NETWORK_NAME];
695	/** What to connect to the trunk port. (input)
696	* This is specific to the trunk type below. */
697	char szTrunk[INTNET_MAX_TRUNK_NAME];
698	/** The type of trunk link (NAT, Filter, TAP, etc). (input) */
699	INTNETTRUNKTYPE enmTrunkType;
700	/** Flags, see INTNET_OPEN_FLAGS_. (input) /
701	uint32_t fFlags;
702	/** The size of the send buffer. (input) */
703	uint32_t cbSend;
704	/** The size of the receive buffer. (input) */
705	uint32_t cbRecv;
706	/** The handle to the network interface. (output) */
707	INTNETIFHANDLE hIf;
708	} INTNETOPENREQ;
709	/** Pointer to an INTNETR0OpenReq / VMMR0_DO_INTNET_OPEN request buffer. */
710	typedef INTNETOPENREQ *PINTNETOPENREQ;
711
712	INTNETR0DECL(int) INTNETR0OpenReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETOPENREQ pReq);
713
714
715	/**
716	* Request buffer for INTNETR0IfCloseReq / VMMR0_DO_INTNET_IF_CLOSE.
717	* @see INTNETR0IfClose.
718	*/
719	typedef struct INTNETIFCLOSEREQ
720	{
721	/** The request header. */
722	SUPVMMR0REQHDR Hdr;
723	/** Alternative to passing the taking the session from the VM handle.
724	* Either use this member or use the VM handle, don't do both. */
725	PSUPDRVSESSION pSession;
726	/** The handle to the network interface. */
727	INTNETIFHANDLE hIf;
728	} INTNETIFCLOSEREQ;
729	/** Pointer to an INTNETR0IfCloseReq / VMMR0_DO_INTNET_IF_CLOSE request buffer. */
730	typedef INTNETIFCLOSEREQ *PINTNETIFCLOSEREQ;
731
732	INTNETR0DECL(int) INTNETR0IfCloseReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFCLOSEREQ pReq);
733
734
735	/**
736	* Request buffer for INTNETR0IfGetRing3BufferReq / VMMR0_DO_INTNET_IF_GET_RING3_BUFFER.
737	* @see INTNETR0IfGetRing3Buffer.
738	*/
739	typedef struct INTNETIFGETRING3BUFFERREQ
740	{
741	/** The request header. */
742	SUPVMMR0REQHDR Hdr;
743	/** Alternative to passing the taking the session from the VM handle.
744	* Either use this member or use the VM handle, don't do both. */
745	PSUPDRVSESSION pSession;
746	/** Handle to the interface. */
747	INTNETIFHANDLE hIf;
748	/** The pointer to the ring3 buffer. (output) */
749	R3PTRTYPE(PINTNETBUF) pRing3Buf;
750	} INTNETIFGETRING3BUFFERREQ;
751	/** Pointer to an INTNETR0IfGetRing3BufferReq / VMMR0_DO_INTNET_IF_GET_RING3_BUFFER request buffer. */
752	typedef INTNETIFGETRING3BUFFERREQ *PINTNETIFGETRING3BUFFERREQ;
753
754	INTNETR0DECL(int) INTNETR0IfGetRing3BufferReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFGETRING3BUFFERREQ pReq);
755
756
757	/**
758	* Request buffer for INTNETR0IfSetPromiscuousModeReq / VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE.
759	* @see INTNETR0IfSetPromiscuousMode.
760	*/
761	typedef struct INTNETIFSETPROMISCUOUSMODEREQ
762	{
763	/** The request header. */
764	SUPVMMR0REQHDR Hdr;
765	/** Alternative to passing the taking the session from the VM handle.
766	* Either use this member or use the VM handle, don't do both. */
767	PSUPDRVSESSION pSession;
768	/** Handle to the interface. */
769	INTNETIFHANDLE hIf;
770	/** The new promiscuous mode. */
771	bool fPromiscuous;
772	} INTNETIFSETPROMISCUOUSMODEREQ;
773	/** Pointer to an INTNETR0IfSetPromiscuousModeReq / VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE request buffer. */
774	typedef INTNETIFSETPROMISCUOUSMODEREQ *PINTNETIFSETPROMISCUOUSMODEREQ;
775
776	INTNETR0DECL(int) INTNETR0IfSetPromiscuousModeReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFSETPROMISCUOUSMODEREQ pReq);
777
778
779	/**
780	* Request buffer for INTNETR0IfSetMacAddressReq / VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS.
781	* @see INTNETR0IfSetMacAddress.
782	*/
783	typedef struct INTNETIFSETMACADDRESSREQ
784	{
785	/** The request header. */
786	SUPVMMR0REQHDR Hdr;
787	/** Alternative to passing the taking the session from the VM handle.
788	* Either use this member or use the VM handle, don't do both. */
789	PSUPDRVSESSION pSession;
790	/** Handle to the interface. */
791	INTNETIFHANDLE hIf;
792	/** The new MAC address. */
793	RTMAC Mac;
794	} INTNETIFSETMACADDRESSREQ;
795	/** Pointer to an INTNETR0IfSetMacAddressReq / VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS request buffer. */
796	typedef INTNETIFSETMACADDRESSREQ *PINTNETIFSETMACADDRESSREQ;
797
798	INTNETR0DECL(int) INTNETR0IfSetMacAddressReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFSETMACADDRESSREQ pReq);
799
800
801	/**
802	* Request buffer for INTNETR0IfSetActiveReq / VMMR0_DO_INTNET_IF_SET_ACTIVE.
803	* @see INTNETR0IfSetActive.
804	*/
805	typedef struct INTNETIFSETACTIVEREQ
806	{
807	/** The request header. */
808	SUPVMMR0REQHDR Hdr;
809	/** Alternative to passing the taking the session from the VM handle.
810	* Either use this member or use the VM handle, don't do both. */
811	PSUPDRVSESSION pSession;
812	/** Handle to the interface. */
813	INTNETIFHANDLE hIf;
814	/** The new state. */
815	bool fActive;
816	} INTNETIFSETACTIVEREQ;
817	/** Pointer to an INTNETR0IfSetActiveReq / VMMR0_DO_INTNET_IF_SET_ACTIVE request buffer. */
818	typedef INTNETIFSETACTIVEREQ *PINTNETIFSETACTIVEREQ;
819
820	INTNETR0DECL(int) INTNETR0IfSetActiveReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFSETACTIVEREQ pReq);
821
822
823	/**
824	* Request buffer for INTNETR0IfSendReq / VMMR0_DO_INTNET_IF_SEND.
825	* @see INTNETR0IfSend.
826	*/
827	typedef struct INTNETIFSENDREQ
828	{
829	/** The request header. */
830	SUPVMMR0REQHDR Hdr;
831	/** Alternative to passing the taking the session from the VM handle.
832	* Either use this member or use the VM handle, don't do both. */
833	PSUPDRVSESSION pSession;
834	/** Handle to the interface. */
835	INTNETIFHANDLE hIf;
836	} INTNETIFSENDREQ;
837	/** Pointer to an INTNETR0IfSend() argument package. */
838	typedef INTNETIFSENDREQ *PINTNETIFSENDREQ;
839
840	INTNETR0DECL(int) INTNETR0IfSendReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFSENDREQ pReq);
841
842
843	/**
844	* Request buffer for INTNETR0IfWaitReq / VMMR0_DO_INTNET_IF_WAIT.
845	* @see INTNETR0IfWait.
846	*/
847	typedef struct INTNETIFWAITREQ
848	{
849	/** The request header. */
850	SUPVMMR0REQHDR Hdr;
851	/** Alternative to passing the taking the session from the VM handle.
852	* Either use this member or use the VM handle, don't do both. */
853	PSUPDRVSESSION pSession;
854	/** Handle to the interface. */
855	INTNETIFHANDLE hIf;
856	/** The number of milliseconds to wait. */
857	uint32_t cMillies;
858	} INTNETIFWAITREQ;
859	/** Pointer to an INTNETR0IfWaitReq / VMMR0_DO_INTNET_IF_WAIT request buffer. */
860	typedef INTNETIFWAITREQ *PINTNETIFWAITREQ;
861
862	INTNETR0DECL(int) INTNETR0IfWaitReq(PINTNET pIntNet, PSUPDRVSESSION pSession, PINTNETIFWAITREQ pReq);
863
864
865	#if defined(IN_RING0) \|\| defined(IN_INTNET_TESTCASE)
866	/** @name
867	* @{
868	*/
869
870	/**
871	* Create an instance of the Ring-0 internal networking service.
872	*
873	* @returns VBox status code.
874	* @param ppIntNet Where to store the instance pointer.
875	*/
876	INTNETR0DECL(int) INTNETR0Create(PINTNET *ppIntNet);
877
878	/**
879	* Destroys an instance of the Ring-0 internal networking service.
880	*
881	* @param pIntNet Pointer to the instance data.
882	*/
883	INTNETR0DECL(void) INTNETR0Destroy(PINTNET pIntNet);
884
885	/**
886	* Opens a network interface and connects it to the specified network.
887	*
888	* @returns VBox status code.
889	* @param pIntNet The internal network instance.
890	* @param pSession The session handle.
891	* @param pszNetwork The network name.
892	* @param enmTrunkType The trunk type.
893	* @param pszTrunk The trunk name. Its meaning is specfic to the type.
894	* @param fFlags Flags, see INTNET_OPEN_FLAGS_*.
895	* @param fRestrictAccess Whether new participants should be subjected to access check or not.
896	* @param cbSend The send buffer size.
897	* @param cbRecv The receive buffer size.
898	* @param phIf Where to store the handle to the network interface.
899	*/
900	INTNETR0DECL(int) INTNETR0Open(PINTNET pIntNet, PSUPDRVSESSION pSession, const char *pszNetwork,
901	INTNETTRUNKTYPE enmTrunkType, const char *pszTrunk, uint32_t fFlags,
902	unsigned cbSend, unsigned cbRecv, PINTNETIFHANDLE phIf);
903
904	/**
905	* Close an interface.
906	*
907	* @returns VBox status code.
908	* @param pIntNet The instance handle.
909	* @param hIf The interface handle.
910	* @param pSession The caller's session.
911	*/
912	INTNETR0DECL(int) INTNETR0IfClose(PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession);
913
914	/**
915	* Gets the ring-0 address of the current buffer.
916	*
917	* @returns VBox status code.
918	* @param pIntNet The instance data.
919	* @param hIf The interface handle.
920	* @param pSession The caller's session.
921	* @param ppRing0Buf Where to store the address of the ring-3 mapping.
922	*/
923	INTNETR0DECL(int) INTNETR0IfGetRing0Buffer(PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, PINTNETBUF *ppRing0Buf);
924
925	/**
926	* Maps the default buffer into ring 3.
927	*
928	* @returns VBox status code.
929	* @param pIntNet The instance data.
930	* @param hIf The interface handle.
931	* @param pSession The caller's session.
932	* @param ppRing3Buf Where to store the address of the ring-3 mapping.
933	*/
934	INTNETR0DECL(int) INTNETR0IfGetRing3Buffer(PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, R3PTRTYPE(PINTNETBUF) *ppRing3Buf);
935
936	/**
937	* Sets the promiscuous mode property of an interface.
938	*
939	* @returns VBox status code.
940	* @param pIntNet The instance handle.
941	* @param hIf The interface handle.
942	* @param pSession The caller's session.
943	* @param fPromiscuous Set if the interface should be in promiscuous mode, clear if not.
944	*/
945	INTNETR0DECL(int) INTNETR0IfSetPromiscuousMode( PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, bool fPromiscuous);
946	INTNETR0DECL(int) INTNETR0IfSetMacAddress( PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, PCRTMAC pMac);
947	INTNETR0DECL(int) INTNETR0IfSetActive( PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, bool fActive);
948
949	/**
950	* Sends one or more frames.
951	*
952	* The function will first the frame which is passed as the optional
953	* arguments pvFrame and cbFrame. These are optional since it also
954	* possible to chain together one or more frames in the send buffer
955	* which the function will process after considering it's arguments.
956	*
957	* @returns VBox status code.
958	* @param pIntNet The instance data.
959	* @param hIf The interface handle.
960	* @param pSession The caller's session.
961	* @param pvFrame Pointer to the frame. Optional, please don't use.
962	* @param cbFrame Size of the frame. Optional, please don't use.
963	*/
964	INTNETR0DECL(int) INTNETR0IfSend(PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, const void *pvFrame, unsigned cbFrame);
965
966	/**
967	* Wait for the interface to get signaled.
968	* The interface will be signaled when is put into the receive buffer.
969	*
970	* @returns VBox status code.
971	* @param pIntNet The instance handle.
972	* @param hIf The interface handle.
973	* @param pSession The caller's session.
974	* @param cMillies Number of milliseconds to wait. RT_INDEFINITE_WAIT should be
975	* used if indefinite wait is desired.
976	*/
977	INTNETR0DECL(int) INTNETR0IfWait(PINTNET pIntNet, INTNETIFHANDLE hIf, PSUPDRVSESSION pSession, uint32_t cMillies);
978
979	/** @} */
980	#endif /* IN_RING0 */
981
982	__END_DECLS
983
984	#endif

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source: vbox/trunk/include/VBox/intnet.h@ 17662

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