1 files changed, 85 insertions, 0 deletions
diff --git a/src/VBox/NetworkServices/NAT/proxy_pollmgr.h b/src/VBox/NetworkServices/NAT/proxy_pollmgr.h
new file mode 100644
index 00000000..0b44da53
--- /dev/null
+++ b/src/VBox/NetworkServices/NAT/proxy_pollmgr.h
@@ -0,0 +1,85 @@
+/* $Id: proxy_pollmgr.h $ */
+/** @file
+ * NAT Network - poll manager, definitions and declarations.
+ */
+
+/*
+ * Copyright (C) 2013-2019 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.
+ */
+
+#ifndef VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h
+#define VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#ifndef RT_OS_WINDOWS
+# include <unistd.h>             /* for ssize_t */
+#endif
+#include "lwip/sys.h"
+
+enum pollmgr_slot_t {
+    POLLMGR_CHAN_PXTCP_ADD,     /* new proxy tcp connection from guest */
+    POLLMGR_CHAN_PXTCP_POLLIN,  /* free space in ringbuf, may POLLIN */
+    POLLMGR_CHAN_PXTCP_POLLOUT, /* schedule one-shot POLLOUT callback */
+    POLLMGR_CHAN_PXTCP_DEL,     /* delete pxtcp */
+    POLLMGR_CHAN_PXTCP_RESET,   /* send RST and delete pxtcp */
+
+    POLLMGR_CHAN_PXUDP_ADD,     /* new proxy udp conversation from guest */
+    POLLMGR_CHAN_PXUDP_DEL,     /* delete pxudp from pollmgr */
+
+    POLLMGR_CHAN_PORTFWD,       /* add/remove port forwarding rules */
+
+    POLLMGR_CHAN_COUNT
+};
+
+
+struct pollmgr_handler;         /* forward */
+typedef int (*pollmgr_callback)(struct pollmgr_handler *, SOCKET, int);
+
+struct pollmgr_handler {
+    pollmgr_callback callback;
+    void *data;
+    int slot;
+};
+
+struct pollmgr_refptr {
+    struct pollmgr_handler *ptr;
+    sys_mutex_t lock;
+    size_t strong;
+    size_t weak;
+};
+
+int pollmgr_init(void);
+
+/* static named slots (aka "channels") */
+SOCKET pollmgr_add_chan(int, struct pollmgr_handler *);
+ssize_t pollmgr_chan_send(int, void *buf, size_t nbytes);
+void *pollmgr_chan_recv_ptr(struct pollmgr_handler *, SOCKET, int);
+
+/* dynamic slots */
+int pollmgr_add(struct pollmgr_handler *, SOCKET, int);
+
+/* special-purpose strong/weak references */
+struct pollmgr_refptr *pollmgr_refptr_create(struct pollmgr_handler *);
+void pollmgr_refptr_weak_ref(struct pollmgr_refptr *);
+struct pollmgr_handler *pollmgr_refptr_get(struct pollmgr_refptr *);
+void pollmgr_refptr_unref(struct pollmgr_refptr *);
+
+void pollmgr_update_events(int, int);
+void pollmgr_del_slot(int);
+
+void pollmgr_thread(void *);
+
+/* buffer for callbacks to receive udp without worrying about truncation */
+extern u8_t pollmgr_udpbuf[64 * 1024];
+
+#endif /* !VBOX_INCLUDED_SRC_NAT_proxy_pollmgr_h */