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-rw-r--r--migration/multifd.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/migration/multifd.c b/migration/multifd.c
index 96b9cc0..1d4885e 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -646,7 +646,7 @@ static void *multifd_send_thread(void *opaque)
uint32_t used = p->pages->num;
uint64_t packet_num = p->packet_num;
uint32_t flags = p->flags;
- p->iovs_num = 0;
+ p->iovs_num = 1;
if (used) {
ret = multifd_send_state->ops->send_prepare(p, &local_err);
@@ -666,20 +666,15 @@ static void *multifd_send_thread(void *opaque)
trace_multifd_send(p->id, packet_num, used, flags,
p->next_packet_size);
- ret = qio_channel_write_all(p->c, (void *)p->packet,
- p->packet_len, &local_err);
+ p->iov[0].iov_len = p->packet_len;
+ p->iov[0].iov_base = p->packet;
+
+ ret = qio_channel_writev_all(p->c, p->iov, p->iovs_num,
+ &local_err);
if (ret != 0) {
break;
}
- if (used) {
- ret = qio_channel_writev_all(p->c, p->iov, p->iovs_num,
- &local_err);
- if (ret != 0) {
- break;
- }
- }
-
qemu_mutex_lock(&p->mutex);
p->pending_job--;
qemu_mutex_unlock(&p->mutex);
@@ -916,7 +911,8 @@ int multifd_save_setup(Error **errp)
p->packet->version = cpu_to_be32(MULTIFD_VERSION);
p->name = g_strdup_printf("multifdsend_%d", i);
p->tls_hostname = g_strdup(s->hostname);
- p->iov = g_new0(struct iovec, page_count);
+ /* We need one extra place for the packet header */
+ p->iov = g_new0(struct iovec, page_count + 1);
socket_send_channel_create(multifd_new_send_channel_async, p);
}