xref: /illumos-kvm-cmd/migration.h (revision 68396ea9)
1 /*
2  * QEMU live migration
3  *
4  * Copyright IBM, Corp. 2008
5  *
6  * Authors:
7  *  Anthony Liguori   <aliguori@us.ibm.com>
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2.  See
10  * the COPYING file in the top-level directory.
11  *
12  */
13 
14 #ifndef QEMU_MIGRATION_H
15 #define QEMU_MIGRATION_H
16 
17 #include "qdict.h"
18 #include "qemu-common.h"
19 #include "notify.h"
20 
21 #define MIG_STATE_ERROR		-1
22 #define MIG_STATE_COMPLETED	0
23 #define MIG_STATE_CANCELLED	1
24 #define MIG_STATE_ACTIVE	2
25 
26 typedef struct MigrationState MigrationState;
27 
28 struct MigrationState
29 {
30     /* FIXME: add more accessors to print migration info */
31     void (*cancel)(MigrationState *s);
32     int (*get_status)(MigrationState *s);
33     void (*release)(MigrationState *s);
34     int blk;
35     int shared;
36 };
37 
38 typedef struct FdMigrationState FdMigrationState;
39 
40 struct FdMigrationState
41 {
42     MigrationState mig_state;
43     int64_t bandwidth_limit;
44     QEMUFile *file;
45     int fd;
46     Monitor *mon;
47     int state;
48     int (*get_error)(struct FdMigrationState*);
49     int (*close)(struct FdMigrationState*);
50     int (*write)(struct FdMigrationState*, const void *, size_t);
51     void *opaque;
52 };
53 
54 void process_incoming_migration(QEMUFile *f);
55 
56 int qemu_start_incoming_migration(const char *uri);
57 
58 int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data);
59 
60 int do_migrate_cancel(Monitor *mon, const QDict *qdict, QObject **ret_data);
61 
62 int do_migrate_set_speed(Monitor *mon, const QDict *qdict, QObject **ret_data);
63 
64 uint64_t migrate_max_downtime(void);
65 
66 int do_migrate_set_downtime(Monitor *mon, const QDict *qdict,
67                             QObject **ret_data);
68 
69 void do_info_migrate_print(Monitor *mon, const QObject *data);
70 
71 void do_info_migrate(Monitor *mon, QObject **ret_data);
72 
73 int exec_start_incoming_migration(const char *host_port);
74 
75 MigrationState *exec_start_outgoing_migration(Monitor *mon,
76                                               const char *host_port,
77 					      int64_t bandwidth_limit,
78 					      int detach,
79 					      int blk,
80 					      int inc);
81 
82 int tcp_start_incoming_migration(const char *host_port);
83 
84 MigrationState *tcp_start_outgoing_migration(Monitor *mon,
85                                              const char *host_port,
86 					     int64_t bandwidth_limit,
87 					     int detach,
88 					     int blk,
89 					     int inc);
90 
91 int unix_start_incoming_migration(const char *path);
92 
93 MigrationState *unix_start_outgoing_migration(Monitor *mon,
94                                               const char *path,
95 					      int64_t bandwidth_limit,
96 					      int detach,
97 					      int blk,
98 					      int inc);
99 
100 int fd_start_incoming_migration(const char *path);
101 
102 MigrationState *fd_start_outgoing_migration(Monitor *mon,
103 					    const char *fdname,
104 					    int64_t bandwidth_limit,
105 					    int detach,
106 					    int blk,
107 					    int inc);
108 
109 void migrate_fd_monitor_suspend(FdMigrationState *s, Monitor *mon);
110 
111 void migrate_fd_error(FdMigrationState *s);
112 
113 int migrate_fd_cleanup(FdMigrationState *s);
114 
115 void migrate_fd_put_notify(void *opaque);
116 
117 ssize_t migrate_fd_put_buffer(void *opaque, const void *data, size_t size);
118 
119 void migrate_fd_connect(FdMigrationState *s);
120 
121 void migrate_fd_put_ready(void *opaque);
122 
123 int migrate_fd_get_status(MigrationState *mig_state);
124 
125 void migrate_fd_cancel(MigrationState *mig_state);
126 
127 void migrate_fd_release(MigrationState *mig_state);
128 
129 void migrate_fd_wait_for_unfreeze(void *opaque);
130 
131 int migrate_fd_close(void *opaque);
132 
migrate_to_fms(MigrationState * mig_state)133 static inline FdMigrationState *migrate_to_fms(MigrationState *mig_state)
134 {
135     return container_of(mig_state, FdMigrationState, mig_state);
136 }
137 
138 void add_migration_state_change_notifier(Notifier *notify);
139 void remove_migration_state_change_notifier(Notifier *notify);
140 int get_migration_state(void);
141 
142 #endif
143