mirror of
https://passt.top/passt
synced 2025-05-21 16:55:34 +02:00
5911e08c0f
Introduce facilities for guest migration on top of vhost-user infrastructure. Add migration facilities based on top of the current vhost-user infrastructure, moving vu_migrate() and related functions to migrate.c. Versioned migration stages define function pointers to be called on source or target, or data sections that need to be transferred. The migration header consists of a magic number, a version number for the encoding, and a "compat_version" which represents the oldest version which is compatible with the current one. We don't use it yet, but that allows for the future possibility of backwards compatible protocol extensions. Co-authored-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* Copyright Red Hat
|
|
* Author: David Gibson <david@gibson.dropbear.id.au>
|
|
*/
|
|
|
|
#ifndef EPOLL_TYPE_H
|
|
#define EPOLL_TYPE_H
|
|
|
|
/**
|
|
* enum epoll_type - Different types of fds we poll over
|
|
*/
|
|
enum epoll_type {
|
|
/* Special value to indicate an invalid type */
|
|
EPOLL_TYPE_NONE = 0,
|
|
/* Connected TCP sockets */
|
|
EPOLL_TYPE_TCP,
|
|
/* Connected TCP sockets (spliced) */
|
|
EPOLL_TYPE_TCP_SPLICE,
|
|
/* Listening TCP sockets */
|
|
EPOLL_TYPE_TCP_LISTEN,
|
|
/* timerfds used for TCP timers */
|
|
EPOLL_TYPE_TCP_TIMER,
|
|
/* UDP "listening" sockets */
|
|
EPOLL_TYPE_UDP_LISTEN,
|
|
/* UDP socket for replies on a specific flow */
|
|
EPOLL_TYPE_UDP_REPLY,
|
|
/* ICMP/ICMPv6 ping sockets */
|
|
EPOLL_TYPE_PING,
|
|
/* inotify fd watching for end of netns (pasta) */
|
|
EPOLL_TYPE_NSQUIT_INOTIFY,
|
|
/* timer fd watching for end of netns, fallback for inotify (pasta) */
|
|
EPOLL_TYPE_NSQUIT_TIMER,
|
|
/* tuntap character device */
|
|
EPOLL_TYPE_TAP_PASTA,
|
|
/* socket connected to qemu */
|
|
EPOLL_TYPE_TAP_PASST,
|
|
/* socket listening for qemu socket connections */
|
|
EPOLL_TYPE_TAP_LISTEN,
|
|
/* vhost-user command socket */
|
|
EPOLL_TYPE_VHOST_CMD,
|
|
/* vhost-user kick event socket */
|
|
EPOLL_TYPE_VHOST_KICK,
|
|
|
|
EPOLL_NUM_TYPES,
|
|
};
|
|
|
|
#endif /* EPOLL_TYPE_H */
|