VirtioNet-solaris.c@ 96407

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1	/* $Id: VirtioNet-solaris.c 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VirtualBox Guest Additions - Virtio Network Driver for Solaris.
4	*/
5
6	/*
7	* Copyright (C) 2010-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#include "Virtio-solaris.h"
42	#include "VirtioPci-solaris.h"
43
44	#include <sys/conf.h>
45	#include <sys/sunddi.h>
46	#include <sys/mac_provider.h>
47	#include <sys/strsun.h>
48	#include <sys/cmn_err.h>
49
50	#include <iprt/assert.h>
51	#include <iprt/initterm.h>
52	#include <iprt/errcore.h>
53	#include <VBox/log.h>
54	#include <iprt/mem.h>
55	#include <iprt/rand.h>
56	#include <iprt/string.h>
57
58
59	/*********************************************************************************************************************************
60	* Defined Constants And Macros *
61	*********************************************************************************************************************************/
62	#define DEVICE_NAME "virtnet"
63	/** The module descriptions as seen in 'modinfo'. */
64	#define DEVICE_DESC_DRV "VirtualBox VirtioNet"
65
66	/** Copied from "mac_ether.h" - why the heck is this not public?? All Solaris
67	* mac clients use it... */
68	#define MAC_PLUGIN_IDENT_ETHER "mac_ether"
69
70	/* Copied from our Virtio Device emulation. */
71	#define VIRTIO_NET_CSUM 0x00000001 /* Host handles pkts w/ partial csum */
72	#define VIRTIO_NET_GUEST_CSUM 0x00000002 /* Guest handles pkts w/ partial csum */
73	#define VIRTIO_NET_MAC 0x00000020 /* Host has given MAC address. */
74	#define VIRTIO_NET_GSO 0x00000040 /* Host handles pkts w/ any GSO type */
75	#define VIRTIO_NET_GUEST_TSO4 0x00000080 /* Guest can handle TSOv4 in. */
76	#define VIRTIO_NET_GUEST_TSO6 0x00000100 /* Guest can handle TSOv6 in. */
77	#define VIRTIO_NET_GUEST_ECN 0x00000200 /* Guest can handle TSO[6] w/ ECN in. */
78	#define VIRTIO_NET_GUEST_UFO 0x00000400 /* Guest can handle UFO in. */
79	#define VIRTIO_NET_HOST_TSO4 0x00000800 /* Host can handle TSOv4 in. */
80	#define VIRTIO_NET_HOST_TSO6 0x00001000 /* Host can handle TSOv6 in. */
81	#define VIRTIO_NET_HOST_ECN 0x00002000 /* Host can handle TSO[6] w/ ECN in. */
82	#define VIRTIO_NET_HOST_UFO 0x00004000 /* Host can handle UFO in. */
83	#define VIRTIO_NET_MRG_RXBUF 0x00008000 /* Host can merge receive buffers. */
84	#define VIRTIO_NET_STATUS 0x00010000 /* virtio_net_config.status available */
85	#define VIRTIO_NET_CTRL_VQ 0x00020000 /* Control channel available */
86	#define VIRTIO_NET_CTRL_RX 0x00040000 /* Control channel RX mode support */
87	#define VIRTIO_NET_CTRL_VLAN 0x00080000 /* Control channel VLAN filtering */
88
89
90	/*********************************************************************************************************************************
91	* Internal Functions *
92	*********************************************************************************************************************************/
93	static void *VirtioNetDevAlloc(PVIRTIODEVICE pDevice);
94	static void VirtioNetDevFree(PVIRTIODEVICE pDevice);
95	static int VirtioNetDevAttach(PVIRTIODEVICE pDevice);
96	static int VirtioNetDevDetach(PVIRTIODEVICE pDevice);
97
98	static int VirtioNetAttach(dev_info_t *pDip, ddi_attach_cmd_t Cmd);
99	static int VirtioNetDetach(dev_info_t *pDip, ddi_detach_cmd_t Cmd);
100
101	static int VirtioNetStat(void pvArg, uint_t cmdStat, uint64_t pu64Val);
102	static int VirtioNetStart(void *pvArg);
103	static void VirtioNetStop(void *pvArg);
104	static int VirtioNetSetPromisc(void *pvArg, boolean_t fPromiscOn);
105	static int VirtioNetSetMulticast(void pvArg, boolean_t fAdd, const uint8_t pbMac);
106	static int VirtioNetSetUnicast(void pvArg, const uint8_t pbMac);
107	static boolean_t VirtioNetGetCapab(void pvArg, mac_capab_t Capab, void pvCapabData);
108	static mblk_t VirtioNetXmit(void pvArg, mblk_t *pMsg);
109	static uint_t VirtioNetISR(caddr_t addrArg);
110
111	static int VirtioNetAttachQueues(PVIRTIODEVICE pDevice);
112	static void VirtioNetDetachQueues(PVIRTIODEVICE pDevice);
113
114
115	/*********************************************************************************************************************************
116	* Structures and Typedefs *
117	*********************************************************************************************************************************/
118	/**
119	* Device operations for Virtio Net.
120	*/
121	VIRTIODEVICEOPS g_VirtioDeviceOpsNet =
122	{
123	VirtioNetDevAlloc,
124	VirtioNetDevFree,
125	VirtioNetDevAttach,
126	VirtioNetDevDetach
127	};
128
129	/**
130	* virtio_net_t: Private data per Virtio Device.
131	*/
132	typedef struct virtio_net_t
133	{
134	mac_handle_t hMac; /* Handle to the MAC layer. */
135	RTMAC MacAddr; /* MAC address. */
136	PVIRTIOQUEUE pRxQueue; /* Receive Queue. */
137	PVIRTIOQUEUE pTxQueue; /* Xmit Queue. */
138	PVIRTIOQUEUE pCtrlQueue; /* Control Queue. */
139	kmem_cache_t pTxCache; / TX buffer cache. */
140	} virtio_net_t;
141
142	/**
143	* virtio_txbuf_t: Virtio Net TX buffer.
144	*/
145	typedef struct virtio_net_txbuf_t
146	{
147	ddi_dma_handle_t hDMA; /* DMA TX handle. */
148	} virtio_net_txbuf_t;
149
150	/*
151	* virtio_net_header_t: Virtio Net TX/RX buffer header.
152	*/
153	typedef struct virtio_net_header_t
154	{
155	uint8_t u8Flags; /* Flags. */
156	uint8_t u8GSOType; /* GSO type. */
157	uint16_t u16HdrLen; /* Length of this header. */
158	uint16_t u16GSOSize; /* GSO length if applicable. */
159	uint16_t u16CSumStart; /* Checksum start.*/
160	uint16_t u16CSumOffset; /* Checksum offset.*/
161	} virtio_net_header_t;
162
163	/**
164	* MAC layer hooks for VirtioNet.
165	*/
166	static mac_callbacks_t g_VirtioNetCallbacks =
167	{
168	MC_GETCAPAB, /* Mask of available extra hooks. */
169	VirtioNetStat,
170	VirtioNetStart,
171	VirtioNetStop,
172	VirtioNetSetPromisc,
173	VirtioNetSetMulticast,
174	VirtioNetSetUnicast,
175	VirtioNetXmit,
176	NULL, /* Reserved. */
177	NULL, /* IOCtl. */
178	VirtioNetGetCapab,
179	};
180
181	/**
182	* DMA transfer attributes for Xmit/Recv. buffers.
183	*/
184	static ddi_dma_attr_t g_VirtioNetBufDmaAttr =
185	{
186	DMA_ATTR_V0, /* Version. */
187	0, /* Lowest usable address. */
188	0xffffffffffffffffULL, /* Highest usable address. */
189	0x7fffffff, /* Maximum DMAable byte count. */
190	MMU_PAGESIZE, /* Alignment in bytes. */
191	0x7ff, /* Bitmap of burst sizes */
192	1, /* Minimum transfer. */
193	0xffffffffU, /* Maximum transfer. */
194	0xffffffffffffffffULL, /* Maximum segment length. */
195	1, /* Maximum number of segments. */
196	1, /* Granularity. */
197	0 /* Flags (reserved). */
198	};
199
200	/**
201	* cb_ops: driver char/block entry points
202	*/
203	static struct cb_ops g_VirtioNetCbOps =
204	{
205	nulldev, /* cb open */
206	nulldev, /* cb close */
207	nodev, /* b strategy */
208	nodev, /* b dump */
209	nodev, /* b print */
210	nodev, /* cb read */
211	nodev, /* cb write */
212	nodev, /* cb ioctl */
213	nodev, /* c devmap */
214	nodev, /* c mmap */
215	nodev, /* c segmap */
216	nochpoll, /* c poll */
217	ddi_prop_op, /* property ops */
218	NULL, /* streamtab */
219	D_MP, /* compat. flag */
220	CB_REV /* revision */
221	};
222
223	/**
224	* dev_ops: driver entry/exit and other ops.
225	*/
226	static struct dev_ops g_VirtioNetDevOps =
227	{
228	DEVO_REV, /* driver build revision */
229	0, /* ref count */
230	NULL, /* get info */
231	nulldev, /* identify */
232	nulldev, /* probe */
233	VirtioNetAttach,
234	VirtioNetDetach,
235	nodev, /* reset */
236	&g_VirtioNetCbOps,
237	(struct bus_ops *)0,
238	nodev /* power */
239	};
240
241	/**
242	* modldrv: export driver specifics to kernel
243	*/
244	static struct modldrv g_VirtioNetDriver =
245	{
246	&mod_driverops, /* extern from kernel */
247	DEVICE_DESC_DRV " " VBOX_VERSION_STRING "r" RT_XSTR(VBOX_SVN_REV),
248	&g_VirtioNetDevOps
249	};
250
251	/**
252	* modlinkage: export install/remove/info to the kernel
253	*/
254	static struct modlinkage g_VirtioNetModLinkage =
255	{
256	MODREV_1, /* loadable module system revision */
257	{
258	&g_VirtioNetDriver, /* driver framework */
259	NULL /* terminate array of linkage structures */
260	}
261	};
262
263
264	/**
265	* Kernel entry points
266	*/
267	int _init(void)
268	{
269	LogFlowFunc((VIRTIOLOGNAME ":_init\n"));
270
271	/*
272	* Prevent module autounloading.
273	*/
274	modctl_t *pModCtl = mod_getctl(&g_VirtioNetModLinkage);
275	if (pModCtl)
276	pModCtl->mod_loadflags \|= MOD_NOAUTOUNLOAD;
277	else
278	LogRel((VIRTIOLOGNAME ":failed to disable autounloading!\n"));
279
280	/*
281	* Initialize IPRT.
282	*/
283	int rc = RTR0Init(0);
284	if (RT_SUCCESS(rc))
285	{
286	/*
287	* Initialize Solaris specific globals here.
288	*/
289	mac_init_ops(&g_VirtioNetDevOps, DEVICE_NAME);
290	rc = mod_install(&g_VirtioNetModLinkage);
291	if (!rc)
292	return rc;
293
294	LogRel((VIRTIOLOGNAME ":mod_install failed. rc=%d\n", rc));
295	mac_fini_ops(&g_VirtioNetDevOps);
296	RTR0Term();
297	return rc;
298	}
299	else
300	LogRel((VIRTIOLOGNAME ":failed to initialize IPRT (rc=%d)\n", rc));
301
302	return RTErrConvertToErrno(rc);
303	}
304
305
306	int _fini(void)
307	{
308	int rc;
309	LogFlowFunc((VIRTIOLOGNAME ":_fini\n"));
310
311	rc = mod_remove(&g_VirtioNetModLinkage);
312	if (!rc)
313	{
314	mac_fini_ops(&g_VirtioNetDevOps);
315	RTR0Term();
316	}
317	return rc;
318	}
319
320
321	int _info(struct modinfo *pModInfo)
322	{
323	LogFlowFunc((VIRTIOLOGNAME ":_info\n"));
324
325	int rc = mod_info(&g_VirtioNetModLinkage, pModInfo);
326
327	LogFlow((VIRTIOLOGNAME ":_info returns %d\n", rc));
328	return rc;
329	}
330
331
332	/**
333	* Attach entry point, to attach a device to the system or resume it.
334	*
335	* @param pDip The module structure instance.
336	* @param Cmd Operation type (attach/resume).
337	*
338	* @return corresponding solaris error code.
339	*/
340	static int VirtioNetAttach(dev_info_t *pDip, ddi_attach_cmd_t Cmd)
341	{
342	return VirtioAttach(pDip, Cmd, &g_VirtioDeviceOpsNet, &g_VirtioHyperOpsPci);
343	}
344
345
346	/**
347	* Detach entry point, to detach a device to the system or suspend it.
348	*
349	* @param pDip The module structure instance.
350	* @param Cmd Operation type (detach/suspend).
351	*
352	* @return corresponding solaris error code.
353	*/
354	static int VirtioNetDetach(dev_info_t *pDip, ddi_detach_cmd_t Cmd)
355	{
356	return VirtioDetach(pDip, Cmd);
357	}
358
359
360	/**
361	* Virtio Net TX buffer constructor for kmem_cache_create().
362	*
363	* @param pvBuf Pointer to the allocated buffer.
364	* @param pvArg Opaque private data.
365	* @param fFlags Propagated KM flag values.
366	*
367	* @return 0 on success, or -1 on failure.
368	*/
369	static int VirtioNetTxBufCreate(void pvBuf, void pvArg, int fFlags)
370	{
371	virtio_net_txbuf_t *pTxBuf = pvBuf;
372	PVIRTIODEVICE pDevice = pvArg;
373
374	/** @todo ncookies handles? */
375	int rc = ddi_dma_alloc_handle(pDevice->pDip, &g_VirtioNetBufDmaAttr,
376	fFlags & KM_NOSLEEP ? DDI_DMA_DONTWAIT : DDI_DMA_SLEEP,
377	0 /* Arg */, &pTxBuf->hDMA);
378	if (rc == DDI_SUCCESS)
379	return 0;
380	return -1;
381	}
382
383
384	/**
385	* Virtio Net TX buffer destructor for kmem_cache_create().
386	*
387	* @param pvBuf Pointer to the allocated buffer.
388	* @param pvArg
389	*/
390	static void VirtioNetTxBufDestroy(void pvBuf, void pvArg)
391	{
392	NOREF(pvArg);
393	virtio_net_txbuf_t *pTxBuf = pvBuf;
394
395	ddi_dma_free_handle(&pTxBuf->hDMA);
396	}
397
398
399	/**
400	* Virtio Net private data allocation routine.
401	*
402	* @param pDevice Pointer to the Virtio device instance.
403	*
404	* @return Allocated private data that must only be freed by calling
405	* VirtioNetDevFree().
406	*/
407	static void *VirtioNetDevAlloc(PVIRTIODEVICE pDevice)
408	{
409	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetDevAlloc pDevice=%p\n", pDevice));
410
411	AssertReturn(pDevice, NULL);
412	virtio_net_t *pNet = RTMemAllocZ(sizeof(virtio_net_t));
413	if (RT_LIKELY(pNet))
414	{
415	/*
416	* Create a kernel memory cache for frequently allocated/deallocated
417	* buffers.
418	*/
419	char szCachename[KSTAT_STRLEN];
420	RTStrPrintf(szCachename, sizeof(szCachename), "VirtioNet_Cache_%d", ddi_get_instance(pDevice->pDip));
421	pNet->pTxCache = kmem_cache_create(szCachename, /* Cache name */
422	sizeof(virtio_net_txbuf_t), /* Size of buffers in cache */
423	0, /* Align */
424	VirtioNetTxBufCreate, /* Buffer constructor */
425	VirtioNetTxBufDestroy, /* Buffer destructor */
426	NULL, /* pfnReclaim */
427	pDevice, /* Private data */
428	NULL, /* "vmp", MBZ (man page) */
429	0 /* "cflags", MBZ (man page) */
430	);
431	if (RT_LIKELY(pNet->pTxCache))
432	return pNet;
433	else
434	LogRel((VIRTIOLOGNAME ":kmem_cache_create failed.\n"));
435	}
436	else
437	LogRel((VIRTIOLOGNAME ":failed to alloc %u bytes for Net instance.\n", sizeof(virtio_net_t)));
438
439	return NULL;
440	}
441
442
443	/**
444	* Virtio Net private data free routine.
445	*
446	* @param pDevice Pointer to the Virtio device instance.
447	*/
448	static void VirtioNetDevFree(PVIRTIODEVICE pDevice)
449	{
450	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetDevFree pDevice=%p\n", pDevice));
451	AssertReturnVoid(pDevice);
452
453	virtio_net_t *pNet = pDevice->pvDevice;
454	kmem_cache_destroy(pNet->pTxCache);
455	RTMemFree(pNet);
456	pDevice->pvDevice = NULL;
457	}
458
459
460	/**
461	* Virtio Net device attach rountine.
462	*
463	* @param pDevice Pointer to the Virtio device instance.
464	*
465	* @return corresponding solaris error code.
466	*/
467	static int VirtioNetDevAttach(PVIRTIODEVICE pDevice)
468	{
469	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetDevAttach pDevice=%p\n", pDevice));
470
471	virtio_net_t *pNet = pDevice->pvDevice;
472	mac_register_t *pMacRegHandle = mac_alloc(MAC_VERSION);
473	if (pMacRegHandle)
474	{
475	pMacRegHandle->m_driver = pDevice;
476	pMacRegHandle->m_dip = pDevice->pDip;
477	pMacRegHandle->m_callbacks = &g_VirtioNetCallbacks;
478	pMacRegHandle->m_type_ident = MAC_PLUGIN_IDENT_ETHER;
479	pMacRegHandle->m_min_sdu = 0;
480	pMacRegHandle->m_max_sdu = 1500; /** @todo verify */
481	/** @todo should we set the margin size? */
482	pMacRegHandle->m_src_addr = pNet->MacAddr.au8;
483
484	/*
485	* Get MAC from the host or generate a random MAC address.
486	*/
487	if (pDevice->fHostFeatures & VIRTIO_NET_MAC)
488	{
489	pDevice->pHyperOps->pfnGet(pDevice, 0 /* offset */, &pNet->MacAddr.au8, sizeof(pNet->MacAddr));
490	LogFlow((VIRTIOLOGNAME ":VirtioNetDevAttach: Obtained MAC address from host: %.6Rhxs\n", pNet->MacAddr.au8));
491	}
492	else
493	{
494	pNet->MacAddr.au8[0] = 0x08;
495	pNet->MacAddr.au8[1] = 0x00;
496	pNet->MacAddr.au8[2] = 0x27;
497	RTRandBytes(&pNet->MacAddr.au8[3], 3);
498	LogFlow((VIRTIOLOGNAME ":VirtioNetDevAttach: Generated MAC address %.6Rhxs\n", pNet->MacAddr.au8));
499	}
500
501	int rc = VirtioNetAttachQueues(pDevice);
502	if (rc == DDI_SUCCESS)
503	{
504	rc = mac_register(pMacRegHandle, &pNet->hMac);
505	if (rc == 0)
506	{
507	mac_link_update(pNet->hMac, LINK_STATE_DOWN);
508	mac_free(pMacRegHandle);
509	LogFlow((VIRTIOLOGNAME ":VirtioNetDevAttach: successfully registered mac.\n"));
510	return DDI_SUCCESS;
511	}
512	else
513	LogRel((VIRTIOLOGNAME ":VirtioNetDevAttach: mac_register failed. rc=%d\n", rc));
514
515	VirtioNetDetachQueues(pDevice);
516	}
517	else
518	LogRel((VIRTIOLOGNAME ":VirtioNetDevAttach: VirtioNetAttachQueues failed. rc=%d\n", rc));
519
520	mac_free(pMacRegHandle);
521	}
522	else
523	LogRel((VIRTIOLOGNAME ":VirtioNetDevAttach: mac_alloc failed. Invalid version!?!\n"));
524
525	return DDI_FAILURE;
526	}
527
528
529	/**
530	* Virtio Net device detach routine.
531	*
532	* @param pDevice Pointer to the Virtio device instance.
533	*
534	* @return corresponding solaris error code.
535	*/
536	static int VirtioNetDevDetach(PVIRTIODEVICE pDevice)
537	{
538	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetDevDetach pDevice=%p\n", pDevice));
539	virtio_net_t *pNet = pDevice->pvDevice;
540
541	int rc = mac_unregister(pNet->hMac);
542	if (rc == 0)
543	{
544	VirtioNetDetachQueues(pDevice);
545	return DDI_SUCCESS;
546	}
547	else
548	LogRel((VIRTIOLOGNAME ":VirtioNetDevDetach: mac_unregister failed. rc=%d\n", rc));
549
550	return DDI_FAILURE;
551	}
552
553
554	/**
555	* Attach the Virtio Net TX, RX and control queues.
556	*
557	* @param pDevice Pointer to the Virtio device instance.
558	*
559	* @return corresponding solaris error code.
560	*/
561	static int VirtioNetAttachQueues(PVIRTIODEVICE pDevice)
562	{
563	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetAttachQueues pDevice=%p\n", pDevice));
564
565	virtio_net_t *pNet = pDevice->pvDevice;
566
567	pNet->pRxQueue = VirtioGetQueue(pDevice, 0 /* index */ );
568	if (pNet->pRxQueue)
569	{
570	pNet->pTxQueue = VirtioGetQueue(pDevice, 1 /* index */);
571	if (pNet->pTxQueue)
572	{
573	if (pDevice->fHostFeatures & VIRTIO_NET_CTRL_VQ)
574	{
575	pNet->pCtrlQueue = VirtioGetQueue(pDevice, 2 /* index */);
576	if (pNet->pCtrlQueue)
577	{
578	LogFlow((VIRTIOLOGNAME ":VirtioNetAttachQueues successfully obtained 3 queues.\n"));
579	return DDI_SUCCESS;
580	}
581	else
582	LogRel((VIRTIOLOGNAME ":VirtioNetAttachQueues: failed to get Control queue.\n"));
583	}
584	else
585	{
586	LogFlow((VIRTIOLOGNAME ":VirtioNetAttachQueues successfully obtained 2 queues.\n"));
587	return DDI_SUCCESS;
588	}
589
590	VirtioPutQueue(pDevice, pNet->pTxQueue);
591	pNet->pTxQueue = NULL;
592	}
593	else
594	LogRel((VIRTIOLOGNAME ":VirtioNetAttachQueues: failed to get TX queue.\n"));
595
596	VirtioPutQueue(pDevice, pNet->pRxQueue);
597	pNet->pRxQueue = NULL;
598	}
599	else
600	LogRel((VIRTIOLOGNAME ":VirtioNetAttachQueues: failed to get RX queue.\n"));
601
602	return DDI_FAILURE;
603	}
604
605
606	/**
607	* Detach the Virtio Net TX, RX and control queues.
608	*
609	* @param pDevice Pointer to the Virtio device instance.
610	*/
611	static void VirtioNetDetachQueues(PVIRTIODEVICE pDevice)
612	{
613	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetDetachQueues pDevice=%p\n", pDevice));
614	virtio_net_t *pNet = pDevice->pvDevice;
615
616	if ( pDevice->fHostFeatures & VIRTIO_NET_CTRL_VQ
617	&& pNet->pCtrlQueue)
618	VirtioPutQueue(pDevice, pNet->pCtrlQueue);
619
620	if (pNet->pTxCache)
621	VirtioPutQueue(pDevice, pNet->pTxQueue);
622
623	if (pNet->pRxQueue)
624	VirtioPutQueue(pDevice, pNet->pRxQueue);
625	}
626
627
628
629	/* -=-=-=-=- Virtio Net MAC layer callbacks -=-=-=-=- */
630
631	/**
632	* Virtio Net statistics.
633	*
634	* @param pvArg Pointer to private data.
635	* @param cmdStat Which statistics to provide.
636	* @param pu64Val Where to write statistics data.
637	*
638	* @return corresponding solaris error code.
639	*/
640	static int VirtioNetStat(void pvArg, uint_t cmdStat, uint64_t pu64Val)
641	{
642	NOREF(pvArg);
643	NOREF(cmdStat);
644	NOREF(pu64Val);
645	return ENOTSUP;
646	}
647
648
649	/**
650	* Virtio Net Start.
651	*
652	* @param pvArg Pointer to private data.
653	*
654	* @return corresponding solaris error code.
655	*/
656	static int VirtioNetStart(void *pvArg)
657	{
658	PVIRTIODEVICE pDevice = pvArg;
659	virtio_net_t *pNet = pDevice->pvDevice;
660	mac_link_update(pNet->hMac, LINK_STATE_UP);
661
662	pDevice->pHyperOps->pfnSetStatus(pDevice, VIRTIO_PCI_STATUS_DRV_OK);
663	return 0;
664	}
665
666
667	/**
668	* Virtio Net Stop.
669	*
670	* @param pvArg Pointer to private data.
671	*/
672	static void VirtioNetStop(void *pvArg)
673	{
674	PVIRTIODEVICE pDevice = pvArg;
675	virtio_net_t *pNet = pDevice->pvDevice;
676	mac_link_update(pNet->hMac, LINK_STATE_DOWN);
677
678	/*
679	* I don't think we should set status here as the host checks the status on every Xmit. This means pending Xmits
680	* would also be dropped.
681	* @todo: Not sure what's the best way to signal connect/disconnect of the link to the host. Figure it out.
682	*/
683	}
684
685
686	/**
687	* Virtio Net toggle Promiscuous mode.
688	*
689	* @param pvArg Pointer to private data.
690	* @param fPromiscOn Promiscuous On/Off.
691	*
692	* @return corresponding solaris error code.
693	*/
694	static int VirtioNetSetPromisc(void *pvArg, boolean_t fPromiscOn)
695	{
696	NOREF(pvArg);
697	NOREF(fPromiscOn);
698	return 0;
699	}
700
701
702	/**
703	* Virtio Net set/add multicast address.
704	*
705	* @param pvArg Pointer to private data.
706	* @param fAdd Whether to add multicast address or not.
707	* @param pbMac Pointer to the multicast MAC address to set/add.
708	*
709	* @return corresponding solaris error code.
710	*/
711	static int VirtioNetSetMulticast(void pvArg, boolean_t fAdd, const uint8_t pbMac)
712	{
713	NOREF(pvArg);
714	NOREF(fAdd);
715	NOREF(pbMac);
716	return 1;
717	}
718
719
720	/**
721	* Virtio Net set unicast address.
722	*
723	* @param pvArg Pointer to private data.
724	* @param pbMac Pointer to the unicast MAC address to set.
725	*
726	* @return corresponding solaris error code.
727	*/
728	static int VirtioNetSetUnicast(void pvArg, const uint8_t pbMac)
729	{
730	NOREF(pvArg);
731	NOREF(pbMac);
732	return ENOTSUP;
733	}
734
735
736	/**
737	* Virtio Net get capabilities hook.
738	*
739	* @param pvArg Pointer to private data.
740	* @param Capab MAC layer capabilities.
741	* @param pvCapabData Pointer to store capability info.
742	*
743	* @return B_TRUE upon success, otherwise B_FALSE.
744	*/
745	static boolean_t VirtioNetGetCapab(void pvArg, mac_capab_t Capab, void pvCapabData)
746	{
747	NOREF(pvArg);
748	NOREF(Capab);
749	NOREF(pvCapabData);
750	return B_FALSE;
751	}
752
753
754	/**
755	* Virtio Net Xmit hook.
756	*
757	* @param pvArg Pointer to private data.
758	* @param pMsg Pointer to the message.
759	*
760	* @return Pointer to message not Xmited.
761	*/
762	static mblk_t VirtioNetXmit(void pvArg, mblk_t *pMsg)
763	{
764	LogFlowFunc((VIRTIOLOGNAME ":VirtioNetXmit pMsg=%p\n", pMsg));
765	cmn_err(CE_NOTE, "Xmit pMsg=%p\n", pMsg);
766
767	PVIRTIODEVICE pDevice = pvArg;
768	virtio_net_t *pNet = pDevice->pvDevice;
769	bool fNotify = false;
770
771	while (pMsg)
772	{
773	mblk_t *pNextMsg = pMsg->b_next;
774
775	#if 0
776	mblk_t *pHdr = allocb(sizeof(virtio_net_header_t), BPRI_HI);
777	if (RT_UNLIKELY(!pHdr))
778	break;
779
780	virtio_net_header_t *pNetHdr = pHdr->b_rptr;
781	memset(pNetHdr, 0, sizeof(virtio_net_header_t));
782	pNetHdr->u8Flags = VIRTIO_NET_GUEST_CSUM;
783	pNetHdr->u16HdrLen = sizeof(virtio_net_header_t);
784
785	pHdr->b_wptr += sizeof(virtio_net_header_t);
786	pHdr->b_cont = pMsg;
787	#endif
788
789	virtio_net_txbuf_t *pTxBuf = kmem_cache_alloc(pNet->pTxCache, KM_SLEEP);
790	if (!pTxBuf)
791	break;
792
793	ddi_dma_cookie_t DmaCookie;
794	uint_t cCookies;
795	int rc = ddi_dma_addr_bind_handle(pTxBuf->hDMA, NULL /* addrspace /, (char )pMsg->b_rptr, MBLKL(pMsg),
796	DDI_DMA_WRITE \| DDI_DMA_STREAMING, DDI_DMA_SLEEP, 0 /* addr */,
797	&DmaCookie, &cCookies);
798	cmn_err(CE_NOTE, "VirtioNetXmit: MBLKL pMsg=%u\n", MBLKL(pMsg));
799	if (rc != DDI_DMA_MAPPED)
800	{
801	LogRel((VIRTIOLOGNAME ":VirtioNetXmit failed to map address to DMA handle. rc=%d\n", rc));
802	kmem_cache_free(pNet->pTxCache, pTxBuf);
803	break;
804	}
805
806	/** @todo get 'cCookies' slots from the ring. */
807
808	for (uint_t i = 0; i < cCookies; i++)
809	{
810	uint16_t fFlags = 0;
811	if (i < cCookies - 1)
812	fFlags \|= VIRTIO_FLAGS_RING_DESC_NEXT;
813
814	rc = VirtioRingPush(pNet->pTxQueue, DmaCookie.dmac_laddress, DmaCookie.dmac_size, fFlags);
815	if (RT_FAILURE(rc))
816	{
817	LogRel((VIRTIOLOGNAME ":VirtioNetXmit failed. rc=%Rrc\n", rc));
818	break;
819	}
820
821	ddi_dma_nextcookie(pTxBuf->hDMA, &DmaCookie);
822	}
823
824	pMsg = pNextMsg;
825	fNotify = true;
826	if (RT_FAILURE(rc))
827	{
828	ddi_dma_unbind_handle(pTxBuf->hDMA);
829	break;
830	}
831	}
832
833	if (fNotify)
834	pDevice->pHyperOps->pfnNotifyQueue(pDevice, pNet->pTxQueue);
835
836	return pMsg;
837	}
838
839
840	/**
841	* Interrupt Service Routine for Virtio Net.
842	*
843	* @param Arg Private data (unused, will be NULL).
844	* @returns DDI_INTR_CLAIMED if it's our interrupt, DDI_INTR_UNCLAIMED if it isn't.
845	*/
846	static uint_t VirtioNetISR(caddr_t Arg)
847	{
848	cmn_err(CE_NOTE, "VirtioNetISR Arg=%p\n", Arg);
849	NOREF(Arg);
850	return DDI_INTR_UNCLAIMED;
851	}
852

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source: vbox/trunk/src/VBox/Additions/solaris/Virtio/VirtioNet-solaris.c@ 96407

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