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Commit | Line | Data |
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4951f65b | 1 | /* |
474c624d | 2 | * QEMU live migration via socket |
4951f65b | 3 | * |
d984464e | 4 | * Copyright Red Hat, Inc. 2009-2016 |
4951f65b CL |
5 | * |
6 | * Authors: | |
7 | * Chris Lalancette <clalance@redhat.com> | |
d984464e | 8 | * Daniel P. Berrange <berrange@redhat.com> |
4951f65b CL |
9 | * |
10 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
11 | * the COPYING file in the top-level directory. | |
12 | * | |
6b620ca3 PB |
13 | * Contributions after 2012-01-13 are licensed under the terms of the |
14 | * GNU GPL, version 2 or (at your option) any later version. | |
4951f65b CL |
15 | */ |
16 | ||
1393a485 | 17 | #include "qemu/osdep.h" |
d99598cc | 18 | |
4951f65b | 19 | #include "qemu-common.h" |
d99598cc | 20 | #include "qemu/error-report.h" |
d984464e | 21 | #include "qapi/error.h" |
dd4339c5 | 22 | #include "channel.h" |
61e8b148 | 23 | #include "socket.h" |
6666c96a | 24 | #include "migration.h" |
08a0aee1 | 25 | #include "qemu-file.h" |
d984464e | 26 | #include "io/channel-socket.h" |
bdd847a0 | 27 | #include "io/net-listener.h" |
d984464e | 28 | #include "trace.h" |
4951f65b | 29 | |
4951f65b | 30 | |
bd269ebc | 31 | static SocketAddress *tcp_build_address(const char *host_port, Error **errp) |
e65c67e4 | 32 | { |
bd269ebc | 33 | SocketAddress *saddr; |
e65c67e4 | 34 | |
bd269ebc MA |
35 | saddr = g_new0(SocketAddress, 1); |
36 | saddr->type = SOCKET_ADDRESS_TYPE_INET; | |
37 | ||
38 | if (inet_parse(&saddr->u.inet, host_port, errp)) { | |
39 | qapi_free_SocketAddress(saddr); | |
e65c67e4 DB |
40 | return NULL; |
41 | } | |
42 | ||
e65c67e4 DB |
43 | return saddr; |
44 | } | |
45 | ||
46 | ||
bd269ebc | 47 | static SocketAddress *unix_build_address(const char *path) |
d984464e | 48 | { |
bd269ebc | 49 | SocketAddress *saddr; |
d984464e | 50 | |
bd269ebc MA |
51 | saddr = g_new0(SocketAddress, 1); |
52 | saddr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
53 | saddr->u.q_unix.path = g_strdup(path); | |
d984464e DB |
54 | |
55 | return saddr; | |
56 | } | |
4951f65b | 57 | |
d984464e | 58 | |
e1226365 DB |
59 | struct SocketConnectData { |
60 | MigrationState *s; | |
61 | char *hostname; | |
62 | }; | |
63 | ||
64 | static void socket_connect_data_free(void *opaque) | |
65 | { | |
66 | struct SocketConnectData *data = opaque; | |
67 | if (!data) { | |
68 | return; | |
69 | } | |
70 | g_free(data->hostname); | |
71 | g_free(data); | |
72 | } | |
73 | ||
60e705c5 | 74 | static void socket_outgoing_migration(QIOTask *task, |
6f860ae7 | 75 | gpointer opaque) |
4951f65b | 76 | { |
e1226365 | 77 | struct SocketConnectData *data = opaque; |
60e705c5 DB |
78 | QIOChannel *sioc = QIO_CHANNEL(qio_task_get_source(task)); |
79 | Error *err = NULL; | |
4951f65b | 80 | |
60e705c5 | 81 | if (qio_task_propagate_error(task, &err)) { |
6f860ae7 | 82 | trace_migration_socket_outgoing_error(error_get_pretty(err)); |
e08c95ce | 83 | } else { |
e1226365 | 84 | trace_migration_socket_outgoing_connected(data->hostname); |
4951f65b | 85 | } |
688a3dcb | 86 | migration_channel_connect(data->s, sioc, data->hostname, err); |
60e705c5 | 87 | object_unref(OBJECT(sioc)); |
4951f65b CL |
88 | } |
89 | ||
6f860ae7 | 90 | static void socket_start_outgoing_migration(MigrationState *s, |
bd269ebc | 91 | SocketAddress *saddr, |
6f860ae7 | 92 | Error **errp) |
4951f65b | 93 | { |
6f860ae7 | 94 | QIOChannelSocket *sioc = qio_channel_socket_new(); |
e1226365 | 95 | struct SocketConnectData *data = g_new0(struct SocketConnectData, 1); |
474c624d | 96 | |
e1226365 | 97 | data->s = s; |
bd269ebc MA |
98 | if (saddr->type == SOCKET_ADDRESS_TYPE_INET) { |
99 | data->hostname = g_strdup(saddr->u.inet.host); | |
e1226365 | 100 | } |
474c624d | 101 | |
6f01f136 | 102 | qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-outgoing"); |
d984464e DB |
103 | qio_channel_socket_connect_async(sioc, |
104 | saddr, | |
6f860ae7 | 105 | socket_outgoing_migration, |
e1226365 | 106 | data, |
8005fdd8 PX |
107 | socket_connect_data_free, |
108 | NULL); | |
bd269ebc | 109 | qapi_free_SocketAddress(saddr); |
4951f65b CL |
110 | } |
111 | ||
e65c67e4 DB |
112 | void tcp_start_outgoing_migration(MigrationState *s, |
113 | const char *host_port, | |
114 | Error **errp) | |
115 | { | |
9308ae54 | 116 | Error *err = NULL; |
bd269ebc | 117 | SocketAddress *saddr = tcp_build_address(host_port, &err); |
9308ae54 DDAG |
118 | if (!err) { |
119 | socket_start_outgoing_migration(s, saddr, &err); | |
120 | } | |
121 | error_propagate(errp, err); | |
e65c67e4 DB |
122 | } |
123 | ||
6f860ae7 DB |
124 | void unix_start_outgoing_migration(MigrationState *s, |
125 | const char *path, | |
126 | Error **errp) | |
127 | { | |
bd269ebc | 128 | SocketAddress *saddr = unix_build_address(path); |
6f860ae7 DB |
129 | socket_start_outgoing_migration(s, saddr, errp); |
130 | } | |
131 | ||
d984464e | 132 | |
bdd847a0 DB |
133 | static void socket_accept_incoming_migration(QIONetListener *listener, |
134 | QIOChannelSocket *cioc, | |
135 | gpointer opaque) | |
4951f65b | 136 | { |
6f860ae7 | 137 | trace_migration_socket_incoming_accepted(); |
d984464e | 138 | |
bdd847a0 DB |
139 | qio_channel_set_name(QIO_CHANNEL(cioc), "migration-socket-incoming"); |
140 | migration_channel_process_incoming(QIO_CHANNEL(cioc)); | |
ab52a824 | 141 | |
428d8908 JQ |
142 | if (migration_has_all_channels()) { |
143 | /* Close listening socket as its no longer needed */ | |
bdd847a0 DB |
144 | qio_net_listener_disconnect(listener); |
145 | ||
146 | object_unref(OBJECT(listener)); | |
428d8908 | 147 | } |
4951f65b CL |
148 | } |
149 | ||
d984464e | 150 | |
bd269ebc | 151 | static void socket_start_incoming_migration(SocketAddress *saddr, |
6f860ae7 | 152 | Error **errp) |
4951f65b | 153 | { |
bdd847a0 | 154 | QIONetListener *listener = qio_net_listener_new(); |
4951f65b | 155 | |
bdd847a0 | 156 | qio_net_listener_set_name(listener, "migration-socket-listener"); |
6f01f136 | 157 | |
bdd847a0 DB |
158 | if (qio_net_listener_open_sync(listener, saddr, errp) < 0) { |
159 | object_unref(OBJECT(listener)); | |
43eaae28 | 160 | return; |
4951f65b CL |
161 | } |
162 | ||
bdd847a0 DB |
163 | qio_net_listener_set_client_func(listener, |
164 | socket_accept_incoming_migration, | |
165 | NULL, NULL); | |
4951f65b | 166 | } |
6f860ae7 | 167 | |
e65c67e4 DB |
168 | void tcp_start_incoming_migration(const char *host_port, Error **errp) |
169 | { | |
9308ae54 | 170 | Error *err = NULL; |
bd269ebc | 171 | SocketAddress *saddr = tcp_build_address(host_port, &err); |
9308ae54 DDAG |
172 | if (!err) { |
173 | socket_start_incoming_migration(saddr, &err); | |
174 | } | |
9102d27e | 175 | qapi_free_SocketAddress(saddr); |
9308ae54 | 176 | error_propagate(errp, err); |
e65c67e4 DB |
177 | } |
178 | ||
6f860ae7 DB |
179 | void unix_start_incoming_migration(const char *path, Error **errp) |
180 | { | |
bd269ebc | 181 | SocketAddress *saddr = unix_build_address(path); |
6f860ae7 | 182 | socket_start_incoming_migration(saddr, errp); |
9102d27e | 183 | qapi_free_SocketAddress(saddr); |
6f860ae7 | 184 | } |