virtio: add missing tx lock when running multithreaded

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

diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c
index ae8a116..c7efe65 100644 (file)
--- a/src/vnet/devices/virtio/device.c
+++ b/src/vnet/devices/virtio/device.c
@@ -182,6 +182,8 @@ virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
   u16 mask = sz - 1;
   u32 *buffers = vlib_frame_args (frame);
 
+  clib_spinlock_lock_if_init (&vif->lockp);
+
   /* free consumed buffers */
   virtio_free_used_desc (vm, vring);
 
@@ -221,6 +223,8 @@ virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
       vlib_buffer_free (vm, buffers, n_left);
     }
 
+  clib_spinlock_unlock_if_init (&vif->lockp);
+
   return frame->n_vectors - n_left;
 }