From e866e23959b45325414ac84a21f31dea79867ee6 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 23 Apr 2010 13:28:21 +0200 Subject: [PATCH] spice/vnc: client migration. Handle spice client migration, i.e. inform a spice client connected about the new host and connection parameters, so it can move over the connection automatically. The monitor command has a not-yet used protocol argument simliar to set_password and expire_password commands. This allows to add a simliar feature to vnc in the future. Daniel Berrange plans to work on this. Signed-off-by: Gerd Hoffmann --- hmp-commands.hx | 17 +++++++++++++++++ monitor.c | 27 +++++++++++++++++++++++++++ qmp-commands.hx | 35 +++++++++++++++++++++++++++++++++++ ui/qemu-spice.h | 4 ++++ ui/spice-core.c | 25 +++++++++++++++++++++++++ 5 files changed, 108 insertions(+) diff --git a/hmp-commands.hx b/hmp-commands.hx index 1cea572b15..4906d892cf 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -814,6 +814,23 @@ ETEXI .mhandler.cmd_new = do_snapshot_blkdev, }, +STEXI +@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject} +@findex client_migrate_info +Set the spice/vnc connection info for the migration target. The spice/vnc +server will ask the spice/vnc client to automatically reconnect using the +new parameters (if specified) once the vm migration finished successfully. +ETEXI + + { + .name = "client_migrate_info", + .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", + .params = "protocol hostname port tls-port cert-subject", + .help = "send migration info to spice/vnc client", + .user_print = monitor_user_noop, + .mhandler.cmd_new = client_migrate_info, + }, + STEXI @item snapshot_blkdev @findex snapshot_blkdev diff --git a/monitor.c b/monitor.c index d291158c2f..4c92d38d9e 100644 --- a/monitor.c +++ b/monitor.c @@ -1173,6 +1173,33 @@ static int expire_password(Monitor *mon, const QDict *qdict, QObject **ret_data) return -1; } +static int client_migrate_info(Monitor *mon, const QDict *qdict, QObject **ret_data) +{ + const char *protocol = qdict_get_str(qdict, "protocol"); + const char *hostname = qdict_get_str(qdict, "hostname"); + const char *subject = qdict_get_try_str(qdict, "cert-subject"); + int port = qdict_get_try_int(qdict, "port", -1); + int tls_port = qdict_get_try_int(qdict, "tls-port", -1); + int ret; + + if (strcmp(protocol, "spice") == 0) { + if (!using_spice) { + qerror_report(QERR_DEVICE_NOT_ACTIVE, "spice"); + return -1; + } + + ret = qemu_spice_migrate_info(hostname, port, tls_port, subject); + if (ret != 0) { + qerror_report(QERR_UNDEFINED_ERROR); + return -1; + } + return 0; + } + + qerror_report(QERR_INVALID_PARAMETER, "protocol"); + return -1; +} + static int do_screen_dump(Monitor *mon, const QDict *qdict, QObject **ret_data) { vga_hw_screen_dump(qdict_get_str(qdict, "filename")); diff --git a/qmp-commands.hx b/qmp-commands.hx index 56c4d8bc47..2ed8f44227 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -502,6 +502,41 @@ EQMP .mhandler.cmd_new = do_migrate_set_speed, }, +SQMP +client_migrate_info +------------------ + +Set the spice/vnc connection info for the migration target. The spice/vnc +server will ask the spice/vnc client to automatically reconnect using the +new parameters (if specified) once the vm migration finished successfully. + +Arguments: + +- "protocol": protocol: "spice" or "vnc" (json-string) +- "hostname": migration target hostname (json-string) +- "port": spice/vnc tcp port for plaintext channels (json-int, optional) +- "tls-port": spice tcp port for tls-secured channels (json-int, optional) +- "cert-subject": server certificate subject (json-string, optional) + +Example: + +-> { "execute": "client_migrate_info", + "arguments": { "protocol": "spice", + "hostname": "virt42.lab.kraxel.org", + "port": 1234 } } +<- { "return": {} } + +EQMP + + { + .name = "client_migrate_info", + .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", + .params = "protocol hostname port tls-port cert-subject", + .help = "send migration info to spice/vnc client", + .user_print = monitor_user_noop, + .mhandler.cmd_new = client_migrate_info, + }, + SQMP migrate_set_speed ----------------- diff --git a/ui/qemu-spice.h b/ui/qemu-spice.h index 48239c3dbd..05dc50a69d 100644 --- a/ui/qemu-spice.h +++ b/ui/qemu-spice.h @@ -35,6 +35,8 @@ int qemu_spice_add_interface(SpiceBaseInstance *sin); int qemu_spice_set_passwd(const char *passwd, bool fail_if_connected, bool disconnect_if_connected); int qemu_spice_set_pw_expire(time_t expires); +int qemu_spice_migrate_info(const char *hostname, int port, int tls_port, + const char *subject); void do_info_spice_print(Monitor *mon, const QObject *data); void do_info_spice(Monitor *mon, QObject **ret_data); @@ -44,6 +46,8 @@ void do_info_spice(Monitor *mon, QObject **ret_data); #define using_spice 0 #define qemu_spice_set_passwd(_p, _f1, _f2) (-1) #define qemu_spice_set_pw_expire(_e) (-1) +static inline int qemu_spice_migrate_info(const char *h, int p, int t, const char *s) +{ return -1; } #endif /* CONFIG_SPICE */ diff --git a/ui/spice-core.c b/ui/spice-core.c index 27a1ced430..1aa1a5ed18 100644 --- a/ui/spice-core.c +++ b/ui/spice-core.c @@ -30,11 +30,15 @@ #include "qbool.h" #include "qstring.h" #include "qjson.h" +#include "notify.h" +#include "migration.h" #include "monitor.h" +#include "hw/hw.h" /* core bits */ static SpiceServer *spice_server; +static Notifier migration_state; static const char *auth = "spice"; static char *auth_passwd; static time_t auth_expires = TIME_MAX; @@ -416,6 +420,24 @@ void do_info_spice(Monitor *mon, QObject **ret_data) *ret_data = QOBJECT(server); } +static void migration_state_notifier(Notifier *notifier) +{ + int state = get_migration_state(); + + if (state == MIG_STATE_COMPLETED) { +#if SPICE_SERVER_VERSION >= 0x000701 /* 0.7.1 */ + spice_server_migrate_switch(spice_server); +#endif + } +} + +int qemu_spice_migrate_info(const char *hostname, int port, int tls_port, + const char *subject) +{ + return spice_server_migrate_info(spice_server, hostname, + port, tls_port, subject); +} + static int add_channel(const char *name, const char *value, void *opaque) { int security = 0; @@ -573,6 +595,9 @@ void qemu_spice_init(void) spice_server_init(spice_server, &core_interface); using_spice = 1; + migration_state.notify = migration_state_notifier; + add_migration_state_change_notifier(&migration_state); + qemu_spice_input_init(); qemu_spice_audio_init();