| 1 | /* $Id: VBoxNetSend.h 106061 2024-09-16 14:03:52Z 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) 2014-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 | /** @todo move this to src/VBox/HostDrivers/darwin as a .cpp file. */
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| 38 |
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| 39 | #ifndef VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
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| 40 | #define VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
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| 41 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 42 | # pragma once
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| 43 | #endif
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| 44 |
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| 45 | #if defined(RT_OS_DARWIN)
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| 46 |
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| 47 | # include <iprt/err.h>
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| 48 | # include <iprt/assert.h>
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| 49 | # include <iprt/string.h>
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| 50 |
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| 51 | # include <sys/socket.h>
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| 52 | # if MAC_OS_X_VERSION_MIN_REQUIRED >= 101500 /* The 10.15 SDK has a slightly butchered API deprecation attempt. */
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| 53 | # pragma clang diagnostic push
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| 54 | # pragma clang diagnostic ignored "-Wmacro-redefined" /* Each header redefines __NKE_API_DEPRECATED. */
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| 55 | # pragma clang diagnostic ignored "-Wmissing-declarations" /* Misplaced __NKE_API_DEPRECATED; in kpi_mbuf.h. */
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| 56 | # include <net/kpi_interface.h>
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| 57 | # include <sys/kpi_mbuf.h>
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| 58 | # include <net/if.h>
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| 59 | # pragma clang diagnostic pop
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| 60 | # else /* < 10.15 */
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| 61 | # include <net/kpi_interface.h>
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| 62 | RT_C_DECLS_BEGIN /* Buggy 10.4 headers, fixed in 10.5. */
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| 63 | # include <sys/kpi_mbuf.h>
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| 64 | RT_C_DECLS_END
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| 65 | # include <net/if.h>
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| 66 | # endif /* < 10.15 */
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| 67 |
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| 68 |
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| 69 | RT_C_DECLS_BEGIN
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| 70 |
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| 71 | # if defined(IN_RING0)
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| 72 |
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| 73 | /**
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| 74 | * Constructs and submits a dummy packet to ifnet_input().
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| 75 | *
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| 76 | * This is a workaround for "stuck dock icon" issue. When the first packet goes
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| 77 | * through the interface DLIL grabs a reference to the thread that submits the
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| 78 | * packet and holds it until the interface is destroyed. By submitting this
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| 79 | * dummy we make DLIL grab the thread of a non-GUI process.
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| 80 | *
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| 81 | * Most of this function was copied from vboxNetFltDarwinMBufFromSG().
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| 82 | *
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| 83 | * @returns VBox status code.
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| 84 | * @param pIfNet The interface that will hold the reference to the calling
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| 85 | * thread. We submit dummy as if it was coming from this interface.
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| 86 | */
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| 87 | DECLINLINE(int) VBoxNetSendDummy(ifnet_t pIfNet)
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| 88 | {
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| 89 | int rc = VINF_SUCCESS;
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| 90 |
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| 91 | size_t cbTotal = 50; /* No Ethernet header */
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| 92 | mbuf_how_t How = MBUF_WAITOK;
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| 93 | mbuf_t pPkt = NULL;
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| 94 | errno_t err = mbuf_allocpacket(How, cbTotal, NULL, &pPkt);
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| 95 | if (!err)
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| 96 | {
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| 97 | /* Skip zero sized memory buffers (paranoia). */
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| 98 | mbuf_t pCur = pPkt;
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| 99 | while (pCur && !mbuf_maxlen(pCur))
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| 100 | pCur = mbuf_next(pCur);
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| 101 | Assert(pCur);
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| 102 |
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| 103 | /* Set the required packet header attributes. */
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| 104 | mbuf_pkthdr_setlen(pPkt, cbTotal);
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| 105 | mbuf_pkthdr_setheader(pPkt, mbuf_data(pCur));
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| 106 |
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| 107 | mbuf_setlen(pCur, cbTotal);
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| 108 | memset(mbuf_data(pCur), 0, cbTotal);
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| 109 |
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| 110 | mbuf_pkthdr_setrcvif(pPkt, pIfNet); /* will crash without this. */
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| 111 |
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| 112 | err = ifnet_input(pIfNet, pPkt, NULL);
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| 113 | if (err)
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| 114 | {
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| 115 | rc = RTErrConvertFromErrno(err);
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| 116 | mbuf_freem(pPkt);
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| 117 | }
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| 118 | }
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| 119 | else
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| 120 | rc = RTErrConvertFromErrno(err);
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| 121 |
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| 122 | return rc;
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| 123 | }
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| 124 |
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| 125 | # endif /* IN_RING0 */
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| 126 |
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| 127 | RT_C_DECLS_END
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| 128 |
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| 129 | #endif /* RT_OS_DARWIN */
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| 130 |
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| 131 | #endif /* !VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h */
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| 132 |
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