1 files changed, 111 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/darwin/VBoxNetSend.h b/src/VBox/HostDrivers/darwin/VBoxNetSend.h
new file mode 100644
index 00000000..c4effc10
--- /dev/null
+++ b/src/VBox/HostDrivers/darwin/VBoxNetSend.h
@@ -0,0 +1,111 @@
+/* $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 */
+