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/* $Id: VBoxNetSend.h $ */
/** @file
* A place to share code and definitions between VBoxNetAdp and VBoxNetFlt host drivers.
*/
/*
* Copyright (C) 2014-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/** @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>
# 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>
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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