VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/darwin/VBoxNetSend.h@ 104448

Last change on this file since 104448 was 98103, checked in by vboxsync, 23 months ago

Copyright year updates by scm.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 4.2 KB
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1/* $Id: VBoxNetSend.h 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * A place to share code and definitions between VBoxNetAdp and VBoxNetFlt host drivers.
4 */
5
6/*
7 * Copyright (C) 2014-2023 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/** @todo move this to src/VBox/HostDrivers/darwin as a .cpp file. */
38
39#ifndef VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
40#define VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
41#ifndef RT_WITHOUT_PRAGMA_ONCE
42# pragma once
43#endif
44
45#if defined(RT_OS_DARWIN)
46
47# include <iprt/err.h>
48# include <iprt/assert.h>
49# include <iprt/string.h>
50
51# include <sys/socket.h>
52# if MAC_OS_X_VERSION_MIN_REQUIRED >= 101500 /* The 10.15 SDK has a slightly butchered API deprecation attempt. */
53# pragma clang diagnostic push
54# pragma clang diagnostic ignored "-Wmacro-redefined" /* Each header redefines __NKE_API_DEPRECATED. */
55# pragma clang diagnostic ignored "-Wmissing-declarations" /* Misplaced __NKE_API_DEPRECATED; in kpi_mbuf.h. */
56# include <net/kpi_interface.h>
57# include <sys/kpi_mbuf.h>
58# include <net/if.h>
59# pragma clang diagnostic pop
60# else /* < 10.15 */
61# include <net/kpi_interface.h>
62RT_C_DECLS_BEGIN /* Buggy 10.4 headers, fixed in 10.5. */
63# include <sys/kpi_mbuf.h>
64RT_C_DECLS_END
65# include <net/if.h>
66# endif /* < 10.15 */
67
68
69RT_C_DECLS_BEGIN
70
71# if defined(IN_RING0)
72
73/**
74 * Constructs and submits a dummy packet to ifnet_input().
75 *
76 * This is a workaround for "stuck dock icon" issue. When the first packet goes
77 * through the interface DLIL grabs a reference to the thread that submits the
78 * packet and holds it until the interface is destroyed. By submitting this
79 * dummy we make DLIL grab the thread of a non-GUI process.
80 *
81 * Most of this function was copied from vboxNetFltDarwinMBufFromSG().
82 *
83 * @returns VBox status code.
84 * @param pIfNet The interface that will hold the reference to the calling
85 * thread. We submit dummy as if it was coming from this interface.
86 */
87DECLINLINE(int) VBoxNetSendDummy(ifnet_t pIfNet)
88{
89 int rc = VINF_SUCCESS;
90
91 size_t cbTotal = 50; /* No Ethernet header */
92 mbuf_how_t How = MBUF_WAITOK;
93 mbuf_t pPkt = NULL;
94 errno_t err = mbuf_allocpacket(How, cbTotal, NULL, &pPkt);
95 if (!err)
96 {
97 /* Skip zero sized memory buffers (paranoia). */
98 mbuf_t pCur = pPkt;
99 while (pCur && !mbuf_maxlen(pCur))
100 pCur = mbuf_next(pCur);
101 Assert(pCur);
102
103 /* Set the required packet header attributes. */
104 mbuf_pkthdr_setlen(pPkt, cbTotal);
105 mbuf_pkthdr_setheader(pPkt, mbuf_data(pCur));
106
107 mbuf_setlen(pCur, cbTotal);
108 memset(mbuf_data(pCur), 0, cbTotal);
109
110 mbuf_pkthdr_setrcvif(pPkt, pIfNet); /* will crash without this. */
111
112 err = ifnet_input(pIfNet, pPkt, NULL);
113 if (err)
114 {
115 rc = RTErrConvertFromErrno(err);
116 mbuf_freem(pPkt);
117 }
118 }
119 else
120 rc = RTErrConvertFromErrno(err);
121
122 return rc;
123}
124
125# endif /* IN_RING0 */
126
127RT_C_DECLS_END
128
129#endif /* RT_OS_DARWIN */
130
131#endif /* !VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h */
132
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