Add migration capabilities
The management can query the current migration capabilities using
query-migrate-capabilities QMP command.
The user can use 'info migrate_capabilities' HMP command.
Currently only XBZRLE capability is available.
Signed-off-by: Orit Wasserman <[email protected]>
Signed-off-by: Juan Quintela <[email protected]>
Reviewed-by: Luiz Capitulino <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
diff --git a/migration.c b/migration.c
index 8db1b43..fb620ac 100644
--- a/migration.c
+++ b/migration.c
@@ -113,6 +113,30 @@
return max_downtime;
}
+MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp)
+{
+ MigrationCapabilityStatusList *head = NULL;
+ MigrationCapabilityStatusList *caps;
+ MigrationState *s = migrate_get_current();
+ int i;
+
+ for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) {
+ if (head == NULL) {
+ head = g_malloc0(sizeof(*caps));
+ caps = head;
+ } else {
+ caps->next = g_malloc0(sizeof(*caps));
+ caps = caps->next;
+ }
+ caps->value =
+ g_malloc(sizeof(*caps->value));
+ caps->value->capability = i;
+ caps->value->state = s->enabled_capabilities[i];
+ }
+
+ return head;
+}
+
MigrationInfo *qmp_query_migrate(Error **errp)
{
MigrationInfo *info = g_malloc0(sizeof(*info));
@@ -375,10 +399,16 @@
{
MigrationState *s = migrate_get_current();
int64_t bandwidth_limit = s->bandwidth_limit;
+ bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
+
+ memcpy(enabled_capabilities, s->enabled_capabilities,
+ sizeof(enabled_capabilities));
memset(s, 0, sizeof(*s));
s->bandwidth_limit = bandwidth_limit;
s->params = *params;
+ memcpy(s->enabled_capabilities, enabled_capabilities,
+ sizeof(enabled_capabilities));
s->bandwidth_limit = bandwidth_limit;
s->state = MIG_STATE_SETUP;
