1 files changed, 62 insertions, 0 deletions
diff --git a/src/VBox/NetworkServices/NAT/pxremap.h b/src/VBox/NetworkServices/NAT/pxremap.h
new file mode 100644
index 00000000..b99d8111
--- /dev/null
+++ b/src/VBox/NetworkServices/NAT/pxremap.h
@@ -0,0 +1,62 @@
+/* $Id: pxremap.h $ */
+/** @file
+ * NAT Network - Loopback remapping, declarations and definitions.
+ */
+
+/*
+ * Copyright (C) 2013-2023 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#ifndef VBOX_INCLUDED_SRC_NAT_pxremap_h
+#define VBOX_INCLUDED_SRC_NAT_pxremap_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include "lwip/err.h"
+#include "lwip/ip_addr.h"
+
+struct netif;
+
+
+#define PXREMAP_FAILED (-1)
+#define PXREMAP_ASIS   0
+#define PXREMAP_MAPPED 1
+
+/* IPv4 */
+#if ARP_PROXY
+int pxremap_proxy_arp(struct netif *netif, ip_addr_t *dst);
+#endif
+int pxremap_ip4_divert(struct netif *netif, ip_addr_t *dst);
+int pxremap_outbound_ip4(ip_addr_t *dst, ip_addr_t *src);
+int pxremap_inbound_ip4(ip_addr_t *dst, ip_addr_t *src);
+
+/* IPv6 */
+int pxremap_proxy_na(struct netif *netif, ip6_addr_t *dst);
+int pxremap_ip6_divert(struct netif *netif, ip6_addr_t *dst);
+int pxremap_outbound_ip6(ip6_addr_t *dst, ip6_addr_t *src);
+int pxremap_inbound_ip6(ip6_addr_t *dst, ip6_addr_t *src);
+
+#define pxremap_outbound_ipX(is_ipv6, dst, src)                         \
+    ((is_ipv6) ? pxremap_outbound_ip6(&(dst)->ip6, &(src)->ip6)         \
+               : pxremap_outbound_ip4(&(dst)->ip4, &(src)->ip4))
+
+#endif /* !VBOX_INCLUDED_SRC_NAT_pxremap_h */