Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/src/VBox/Runtime/common/checksum/ipv6.cpp b/src/VBox/Runtime/common/checksum/ipv6.cpp
new file mode 100644
index 00000000..597813ec
--- /dev/null
+++ b/src/VBox/Runtime/common/checksum/ipv6.cpp
@@ -0,0 +1,126 @@
+/* $Id: ipv6.cpp $ */
+/** @file
+ * IPRT - IPv6 Checksum calculation and validation.
+ */
+
+/*
+ * Copyright (C) 2008-2019 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/net.h>
+#include "internal/iprt.h"
+
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+
+
+/**
+ * @copydoc RTNetIPv6PseudoChecksumBits
+ */
+DECLINLINE(uint32_t) rtNetIPv6PseudoChecksumBits(PCRTNETADDRIPV6 pSrcAddr, PCRTNETADDRIPV6 pDstAddr,
+                                                 uint8_t bProtocol, uint32_t cbPkt)
+{
+    uint32_t u32Sum = pSrcAddr->au16[0]
+                    + pSrcAddr->au16[1]
+                    + pSrcAddr->au16[2]
+                    + pSrcAddr->au16[3]
+                    + pSrcAddr->au16[4]
+                    + pSrcAddr->au16[5]
+                    + pSrcAddr->au16[6]
+                    + pSrcAddr->au16[7]
+                    + pDstAddr->au16[0]
+                    + pDstAddr->au16[1]
+                    + pDstAddr->au16[2]
+                    + pDstAddr->au16[3]
+                    + pDstAddr->au16[4]
+                    + pDstAddr->au16[5]
+                    + pDstAddr->au16[6]
+                    + pDstAddr->au16[7]
+                    + RT_H2BE_U16(RT_HIWORD(cbPkt))
+                    + RT_H2BE_U16(RT_LOWORD(cbPkt))
+                    + 0
+                    + RT_H2BE_U16(RT_MAKE_U16(bProtocol, 0));
+    return u32Sum;
+}
+
+
+/**
+ * Calculates the checksum of a pseudo header given an IPv6 header, ASSUMING
+ * that there are no headers between the IPv6 header and the upper layer header.
+ *
+ * Use this method with create care!  In most cases you should be using
+ * RTNetIPv6PseudoChecksumEx.
+ *
+ * @returns 32-bit intermediary checksum value.
+ * @param   pIpHdr      The IPv6 header (network endian (big)).
+ */
+RTDECL(uint32_t) RTNetIPv6PseudoChecksum(PCRTNETIPV6 pIpHdr)
+{
+    return rtNetIPv6PseudoChecksumBits(&pIpHdr->ip6_src, &pIpHdr->ip6_dst,
+                                       pIpHdr->ip6_nxt, RT_N2H_U16(pIpHdr->ip6_plen));
+}
+RT_EXPORT_SYMBOL(RTNetIPv6PseudoChecksum);
+
+
+/**
+ * Calculates the checksum of a pseudo header given an IPv6 header.
+ *
+ * @returns 32-bit intermediary checksum value.
+ * @param   pIpHdr          The IPv6 header (network endian (big)).
+ * @param   bProtocol       The protocol number.  This can be the same as the
+ *                          ip6_nxt field, but doesn't need to be.
+ * @param   cbPkt           The packet size (host endian of course).  This can
+ *                          be the same as the ip6_plen field, but as with @a
+ *                          bProtocol it won't be when extension headers are
+ *                          present.  For UDP this will be uh_ulen converted to
+ *                          host endian.
+ */
+RTDECL(uint32_t) RTNetIPv6PseudoChecksumEx(PCRTNETIPV6 pIpHdr, uint8_t bProtocol, uint16_t cbPkt)
+{
+    return rtNetIPv6PseudoChecksumBits(&pIpHdr->ip6_src, &pIpHdr->ip6_dst, bProtocol, cbPkt);
+}
+RT_EXPORT_SYMBOL(RTNetIPv6PseudoChecksumEx);
+
+
+/**
+ * Calculates the checksum of a pseudo header given the individual components.
+ *
+ * @returns 32-bit intermediary checksum value.
+ * @param   pSrcAddr        Pointer to the source address in network endian.
+ * @param   pDstAddr        Pointer to the destination address in network endian.
+ * @param   bProtocol       The protocol number.  This can be the same as the
+ *                          ip6_nxt field, but doesn't need to be.
+ * @param   cbPkt           The packet size (host endian of course).  This can
+ *                          be the same as the ip6_plen field, but as with @a
+ *                          bProtocol it won't be when extension headers are
+ *                          present.  For UDP this will be uh_ulen converted to
+ *                          host endian.
+ */
+RTDECL(uint32_t) RTNetIPv6PseudoChecksumBits(PCRTNETADDRIPV6 pSrcAddr, PCRTNETADDRIPV6 pDstAddr,
+                                             uint8_t bProtocol, uint16_t cbPkt)
+{
+    return rtNetIPv6PseudoChecksumBits(pSrcAddr, pDstAddr, bProtocol, cbPkt);
+}
+RT_EXPORT_SYMBOL(RTNetIPv6PseudoChecksumBits);
+