Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_vhost / eventfd_link / eventfd_link.h

diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h
new file mode 100644 (file)
index 0000000..5ebc20b
--- /dev/null
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
@@ -0,0 +1,94 @@
+/*-
+ *  This file is provided under a dual BSD/GPLv2 license.  When using or
+ *  redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of version 2 of the GNU General Public License as
+ *   published by the Free Software Foundation.
+ *
+ *   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, write to the Free Software
+ *   Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *   The full GNU General Public License is included in this distribution
+ *   in the file called LICENSE.GPL.
+ *
+ *   Contact Information:
+ *   Intel Corporation
+ *
+ * BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *   Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *   Neither the name of Intel Corporation nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _EVENTFD_LINK_H_
+#define _EVENTFD_LINK_H_
+
+/*
+ * arguements for the EVENTFD_COPY ioctl
+ */
+struct eventfd_copy {
+       unsigned target_fd; /* fd in the target pid */
+       unsigned source_fd; /* fd in the calling pid */
+       pid_t target_pid; /* pid of the target pid */
+};
+
+/*
+ * ioctl to copy an fd entry in calling process to an fd in a target process
+ * NOTE: this one should be
+ * #define EVENTFD_COPY _IOWR('D', 1, struct eventfd_copy) actually
+ */
+#define EVENTFD_COPY 1
+
+/*
+ * arguments for the EVENTFD_COPY2 ioctl
+ */
+struct eventfd_copy2 {
+       unsigned fd; /* fd to steal */
+       pid_t pid; /* pid of the process to steal from */
+       unsigned flags; /* flags to allocate new fd with */
+};
+
+/*
+ * ioctl to copy an fd entry from the target process into newly allocated
+ * fd in the calling process
+ */
+#define EVENTFD_COPY2 _IOW('D', 2, struct eventfd_copy2)
+
+#endif /* _EVENTFD_LINK_H_ */