vhost-user: Add disable feature support in api

[vpp.git] / src / vnet / devices / virtio / vhost_user_input.c

diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c
index 1a7a0c4..2614048 100644 (file)
--- a/src/vnet/devices/virtio/vhost_user_input.c
+++ b/src/vnet/devices/virtio/vhost_user_input.c
@@ -259,6 +259,10 @@ vhost_user_if_input (vlib_main_t * vm,
   u16 thread_index = vm->thread_index;
   u16 copy_len = 0;
 
+  /* The descriptor table is not ready yet */
+  if (PREDICT_FALSE (txvq->avail == 0))
+    return 0;
+
   {
     /* do we have pending interrupts ? */
     vhost_user_vring_t *rxvq = &vui->vrings[VHOST_VRING_IDX_RX (qid)];