numam-dpdk/lib/librte_vhost/eventfd_link/eventfd_link.h
Pavel Boldin c706f3b9c8 vhost: add new eventfd copy ioctl
Signed-off-by: Pavel Boldin <pboldin@mirantis.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
2015-10-30 20:06:30 +01:00

95 lines
3.5 KiB
C

/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* it under the terms of version 2 of the GNU General Public License as
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* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
#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_ */