migrate: HMP migate_continue

HMP equivalent to the just added migrate-continue
Unpause a migrate paused at a given state.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

hmp-commands.hx

@@ -959,7 +959,19 @@ STEXI
 @item migrate_cancel
 @findex migrate_cancel
 Cancel the current VM migration.
+ETEXI
 
+    {
+        .name       = "migrate_continue",
+        .args_type  = "state:s",
+        .params     = "state",
+        .help       = "Continue migration from the given paused state",
+        .cmd        = hmp_migrate_continue,
+    },
+STEXI
+@item migrate_continue @var{state}
+@findex migrate_continue
+Continue migration from the paused state @var{state}
 ETEXI
 
     {

hmp.c

@@ -1495,6 +1495,19 @@ void hmp_migrate_cancel(Monitor *mon, const QDict *qdict)
     qmp_migrate_cancel(NULL);
 }
 
+void hmp_migrate_continue(Monitor *mon, const QDict *qdict)
+{
+    Error *err = NULL;
+    const char *state = qdict_get_str(qdict, "state");
+    int val = qapi_enum_parse(&MigrationStatus_lookup, state, -1, &err);
+
+    if (val >= 0) {
+        qmp_migrate_continue(val, &err);
+    }
+
+    hmp_handle_error(mon, &err);
+}
+
 void hmp_migrate_incoming(Monitor *mon, const QDict *qdict)
 {
     Error *err = NULL;

hmp.h

@@ -68,6 +68,7 @@ void hmp_savevm(Monitor *mon, const QDict *qdict);
 void hmp_delvm(Monitor *mon, const QDict *qdict);
 void hmp_info_snapshots(Monitor *mon, const QDict *qdict);
 void hmp_migrate_cancel(Monitor *mon, const QDict *qdict);
+void hmp_migrate_continue(Monitor *mon, const QDict *qdict);
 void hmp_migrate_incoming(Monitor *mon, const QDict *qdict);
 void hmp_migrate_set_downtime(Monitor *mon, const QDict *qdict);
 void hmp_migrate_set_speed(Monitor *mon, const QDict *qdict);