| 1 | /* $Id: VBoxNetSend.h 82968 2020-02-04 10:35:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * A place to share code and definitions between VBoxNetAdp and VBoxNetFlt host drivers.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2014-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 | /** @todo move this to src/VBox/HostDrivers/darwin as a .cpp file. */
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| 28 |
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| 29 | #ifndef VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
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| 30 | #define VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
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| 31 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 32 | # pragma once
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| 33 | #endif
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| 34 |
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| 35 | #if defined(RT_OS_DARWIN)
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| 36 |
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| 37 | # include <iprt/err.h>
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| 38 | # include <iprt/assert.h>
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| 39 | # include <iprt/string.h>
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| 40 |
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| 41 | # include <sys/socket.h>
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| 42 | # include <net/kpi_interface.h>
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| 43 | RT_C_DECLS_BEGIN /* Buggy 10.4 headers, fixed in 10.5. */
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| 44 | # include <sys/kpi_mbuf.h>
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| 45 | RT_C_DECLS_END
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| 46 | # include <net/if.h>
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| 47 |
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| 48 | RT_C_DECLS_BEGIN
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| 49 |
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| 50 | # if defined(IN_RING0)
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| 51 |
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| 52 | /**
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| 53 | * Constructs and submits a dummy packet to ifnet_input().
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| 54 | *
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| 55 | * This is a workaround for "stuck dock icon" issue. When the first packet goes
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| 56 | * through the interface DLIL grabs a reference to the thread that submits the
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| 57 | * packet and holds it until the interface is destroyed. By submitting this
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| 58 | * dummy we make DLIL grab the thread of a non-GUI process.
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| 59 | *
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| 60 | * Most of this function was copied from vboxNetFltDarwinMBufFromSG().
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| 61 | *
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| 62 | * @returns VBox status code.
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| 63 | * @param pIfNet The interface that will hold the reference to the calling
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| 64 | * thread. We submit dummy as if it was coming from this interface.
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| 65 | */
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| 66 | DECLINLINE(int) VBoxNetSendDummy(ifnet_t pIfNet)
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| 67 | {
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| 68 | int rc = VINF_SUCCESS;
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| 69 |
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| 70 | size_t cbTotal = 50; /* No Ethernet header */
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| 71 | mbuf_how_t How = MBUF_WAITOK;
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| 72 | mbuf_t pPkt = NULL;
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| 73 | errno_t err = mbuf_allocpacket(How, cbTotal, NULL, &pPkt);
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| 74 | if (!err)
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| 75 | {
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| 76 | /* Skip zero sized memory buffers (paranoia). */
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| 77 | mbuf_t pCur = pPkt;
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| 78 | while (pCur && !mbuf_maxlen(pCur))
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| 79 | pCur = mbuf_next(pCur);
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| 80 | Assert(pCur);
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| 81 |
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| 82 | /* Set the required packet header attributes. */
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| 83 | mbuf_pkthdr_setlen(pPkt, cbTotal);
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| 84 | mbuf_pkthdr_setheader(pPkt, mbuf_data(pCur));
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| 85 |
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| 86 | mbuf_setlen(pCur, cbTotal);
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| 87 | memset(mbuf_data(pCur), 0, cbTotal);
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| 88 |
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| 89 | mbuf_pkthdr_setrcvif(pPkt, pIfNet); /* will crash without this. */
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| 90 |
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| 91 | err = ifnet_input(pIfNet, pPkt, NULL);
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| 92 | if (err)
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| 93 | {
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| 94 | rc = RTErrConvertFromErrno(err);
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| 95 | mbuf_freem(pPkt);
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| 96 | }
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| 97 | }
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| 98 | else
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| 99 | rc = RTErrConvertFromErrno(err);
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| 100 |
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| 101 | return rc;
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| 102 | }
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| 103 |
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| 104 | # endif /* IN_RING0 */
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| 105 |
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| 106 | RT_C_DECLS_END
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| 107 |
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| 108 | #endif /* RT_OS_DARWIN */
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| 109 |
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| 110 | #endif /* !VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h */
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| 111 |
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