Imported Upstream version 16.11

[deb_dpdk.git] / lib / librte_vhost / vhost_cuse / eventfd_copy.c

diff --git a/lib/librte_vhost/vhost_cuse/eventfd_copy.c b/lib/librte_vhost/vhost_cuse/eventfd_copy.c
deleted file mode 100644 (file)
index 154b32a..0000000
--- a/lib/librte_vhost/vhost_cuse/eventfd_copy.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*-
- *   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.
- */
-
-#include <unistd.h>
-#include <sys/eventfd.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include <rte_log.h>
-
-#include "eventfd_link/eventfd_link.h"
-#include "eventfd_copy.h"
-#include "vhost-net.h"
-
-static const char eventfd_cdev[] = "/dev/eventfd-link";
-
-static int eventfd_link = -1;
-
-int
-eventfd_init(void)
-{
-       if (eventfd_link >= 0)
-               return 0;
-
-       eventfd_link = open(eventfd_cdev, O_RDWR);
-       if (eventfd_link < 0) {
-               RTE_LOG(ERR, VHOST_CONFIG,
-                       "eventfd_link module is not loaded\n");
-               return -1;
-       }
-
-       return 0;
-}
-
-int
-eventfd_free(void)
-{
-       if (eventfd_link >= 0)
-               close(eventfd_link);
-       return 0;
-}
-
-/*
- * This function uses the eventfd_link kernel module to copy an eventfd file
- * descriptor provided by QEMU in to our process space.
- */
-int
-eventfd_copy(int target_fd, int target_pid)
-{
-       int ret;
-       struct eventfd_copy2 eventfd_copy2;
-
-
-       /* Open the character device to the kernel module. */
-       /* TODO: check this earlier rather than fail until VM boots! */
-       if (eventfd_init() < 0)
-               return -1;
-
-       eventfd_copy2.fd = target_fd;
-       eventfd_copy2.pid = target_pid;
-       eventfd_copy2.flags = O_NONBLOCK | O_CLOEXEC;
-       /* Call the IOCTL to copy the eventfd. */
-       ret = ioctl(eventfd_link, EVENTFD_COPY2, &eventfd_copy2);
-
-       if (ret < 0) {
-               RTE_LOG(ERR, VHOST_CONFIG,
-                       "EVENTFD_COPY2 ioctl failed\n");
-               return -1;
-       }
-
-       return ret;
-}