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/* $Id: VBoxNetSend.h $ */
/** @file
* A place to share code and definitions between VBoxNetAdp and VBoxNetFlt host drivers.
*/
/*
* Copyright (C) 2014-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/** @todo move this to src/VBox/HostDrivers/darwin as a .cpp file. */
#ifndef VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
#define VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#if defined(RT_OS_DARWIN)
# include <iprt/err.h>
# include <iprt/assert.h>
# include <iprt/string.h>
# include <sys/socket.h>
# if MAC_OS_X_VERSION_MIN_REQUIRED >= 101500 /* The 10.15 SDK has a slightly butchered API deprecation attempt. */
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wmacro-redefined" /* Each header redefines __NKE_API_DEPRECATED. */
# pragma clang diagnostic ignored "-Wmissing-declarations" /* Misplaced __NKE_API_DEPRECATED; in kpi_mbuf.h. */
# include <net/kpi_interface.h>
# include <sys/kpi_mbuf.h>
# include <net/if.h>
# pragma clang diagnostic pop
# else /* < 10.15 */
# include <net/kpi_interface.h>
RT_C_DECLS_BEGIN /* Buggy 10.4 headers, fixed in 10.5. */
# include <sys/kpi_mbuf.h>
RT_C_DECLS_END
# include <net/if.h>
# endif /* < 10.15 */
RT_C_DECLS_BEGIN
# if defined(IN_RING0)
/**
* Constructs and submits a dummy packet to ifnet_input().
*
* This is a workaround for "stuck dock icon" issue. When the first packet goes
* through the interface DLIL grabs a reference to the thread that submits the
* packet and holds it until the interface is destroyed. By submitting this
* dummy we make DLIL grab the thread of a non-GUI process.
*
* Most of this function was copied from vboxNetFltDarwinMBufFromSG().
*
* @returns VBox status code.
* @param pIfNet The interface that will hold the reference to the calling
* thread. We submit dummy as if it was coming from this interface.
*/
DECLINLINE(int) VBoxNetSendDummy(ifnet_t pIfNet)
{
int rc = VINF_SUCCESS;
size_t cbTotal = 50; /* No Ethernet header */
mbuf_how_t How = MBUF_WAITOK;
mbuf_t pPkt = NULL;
errno_t err = mbuf_allocpacket(How, cbTotal, NULL, &pPkt);
if (!err)
{
/* Skip zero sized memory buffers (paranoia). */
mbuf_t pCur = pPkt;
while (pCur && !mbuf_maxlen(pCur))
pCur = mbuf_next(pCur);
Assert(pCur);
/* Set the required packet header attributes. */
mbuf_pkthdr_setlen(pPkt, cbTotal);
mbuf_pkthdr_setheader(pPkt, mbuf_data(pCur));
mbuf_setlen(pCur, cbTotal);
memset(mbuf_data(pCur), 0, cbTotal);
mbuf_pkthdr_setrcvif(pPkt, pIfNet); /* will crash without this. */
err = ifnet_input(pIfNet, pPkt, NULL);
if (err)
{
rc = RTErrConvertFromErrno(err);
mbuf_freem(pPkt);
}
}
else
rc = RTErrConvertFromErrno(err);
return rc;
}
# endif /* IN_RING0 */
RT_C_DECLS_END
#endif /* RT_OS_DARWIN */
#endif /* !VBOX_INCLUDED_SRC_darwin_VBoxNetSend_h */
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