[Qemu-devel] [PATCH v7 19/22] migration: Test new fd infrastructure

[Juan Quintela <quintela@redhat.com>]

We just send the address through the alternate channels and test that it
is ok.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/ram.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index b897d490f2..348ce1141a 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -496,8 +496,24 @@ static void *multifd_send_thread(void *opaque)
             break;
         }
         if (p->pages.num) {
+            Error *local_err = NULL;
+            size_t ret;
+            int i;
+            int num;
+
+            num = p->pages.num;
             p->pages.num = 0;
             qemu_mutex_unlock(&p->mutex);
+
+            for (i = 0; i < num; i++) {
+                ret = qio_channel_write(p->c,
+                                        (const char *)&p->pages.iov[i].iov_base,
+                                        sizeof(uint8_t *), &local_err);
+                if (ret != sizeof(uint8_t *)) {
+                    terminate_multifd_send_threads(local_err);
+                    return NULL;
+                }
+            }
             qemu_mutex_lock(&multifd_send_state->mutex);
             p->done = true;
             qemu_mutex_unlock(&multifd_send_state->mutex);
@@ -669,6 +685,7 @@ int multifd_load_cleanup(Error **errp)
 static void *multifd_recv_thread(void *opaque)
 {
     MultiFDRecvParams *p = opaque;
+    uint8_t *recv_address;
 
     qemu_sem_post(&p->ready);
     while (true) {
@@ -678,7 +695,29 @@ static void *multifd_recv_thread(void *opaque)
             break;
         }
         if (p->pages.num) {
+            Error *local_err = NULL;
+            size_t ret;
+            int i;
+            int num;
+
+            num = p->pages.num;
             p->pages.num = 0;
+
+            for (i = 0; i < num; i++) {
+                ret = qio_channel_read(p->c, (char *)&recv_address,
+                                       sizeof(uint8_t *), &local_err);
+                if (ret != sizeof(uint8_t *)) {
+                    terminate_multifd_recv_threads(local_err);
+                    return NULL;
+                }
+                if (recv_address != p->pages.iov[i].iov_base) {
+                    error_setg(&local_err, "received %p and expecting %p (%d)\n",
+                               recv_address, p->pages.iov[i].iov_base, i);
+                    terminate_multifd_recv_threads(local_err);
+                    return NULL;
+                }
+            }
+
             p->done = true;
             qemu_mutex_unlock(&p->mutex);
             qemu_sem_post(&p->ready);
-- 
2.13.5