[PATCH v1 5/7] migration/tls: add support for tls check

[Chuan Zheng]

add multifd_channel_connect to support for tls check.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
---
 migration/multifd.c | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

diff --git a/migration/multifd.c b/migration/multifd.c
index b2e741c..b2076d7 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -20,6 +20,7 @@
 #include "ram.h"
 #include "migration.h"
 #include "socket.h"
+#include "tls.h"
 #include "qemu-file.h"
 #include "trace.h"
 #include "multifd.h"
@@ -718,6 +719,47 @@ out:
     return NULL;
 }
 
+static void multifd_tls_channel_connect(MultiFDSendParams *p,
+                                    QIOChannel *ioc,
+                                    Error **errp)
+{
+    /* TODO */
+}
+
+static bool multifd_channel_connect(MultiFDSendParams *p,
+                                    QIOChannel *ioc,
+                                    Error *error)
+{
+    MigrationState *s = p->s;
+
+    if (!error) {
+        if (s->parameters.tls_creds &&
+            *s->parameters.tls_creds &&
+            !object_dynamic_cast(OBJECT(ioc),
+                                 TYPE_QIO_CHANNEL_TLS)) {
+            multifd_tls_channel_connect(p, ioc, &error);
+            if (!error) {
+                /*
+                 * tls_channel_connect will call back to this
+                 * function after the TLS handshake,
+                 * so we mustn't call multifd_send_thread until then
+                 */
+                return false;
+            } else {
+                return true;
+            }
+        } else {
+            /* update for tls qio channel */
+            p->c = ioc;
+            qemu_thread_create(&p->thread, p->name, multifd_send_thread, p,
+                                   QEMU_THREAD_JOINABLE);
+       }
+       return false;
+    }
+
+    return true;
+}
+
 static void multifd_new_send_channel_cleanup(MultiFDSendParams *p,
                                              QIOChannel *ioc, Error *err)
 {
@@ -749,8 +791,9 @@ static void multifd_new_send_channel_async(QIOTask *task, 
gpointer opaque)
         p->c = QIO_CHANNEL(sioc);
         qio_channel_set_delay(p->c, false);
         p->running = true;
-        qemu_thread_create(&p->thread, p->name, multifd_send_thread, p,
-                           QEMU_THREAD_JOINABLE);
+        if (multifd_channel_connect(p, sioc, local_err)) {
+            goto cleanup;
+        }
         return;
     }
 
-- 
1.8.3.1