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-rw-r--r--src/vnet/devices/virtio/node.c10
-rw-r--r--src/vnet/devices/virtio/virtio_inline.h1
2 files changed, 11 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/node.c b/src/vnet/devices/virtio/node.c
index 8c837575cf8..027e1ed4e74 100644
--- a/src/vnet/devices/virtio/node.c
+++ b/src/vnet/devices/virtio/node.c
@@ -282,6 +282,16 @@ virtio_device_input_gso_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
if (n_left == 0)
return 0;
+ if (PREDICT_FALSE (n_left == vring->queue_size))
+ {
+ /*
+ * Informational error logging when VPP is not pulling packets fast
+ * enough.
+ */
+ vlib_error_count (vm, node->node_index, VIRTIO_INPUT_ERROR_FULL_RX_QUEUE,
+ 1);
+ }
+
if (type == VIRTIO_IF_TYPE_TUN)
{
next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
diff --git a/src/vnet/devices/virtio/virtio_inline.h b/src/vnet/devices/virtio/virtio_inline.h
index 179f319aa4c..41bba755934 100644
--- a/src/vnet/devices/virtio/virtio_inline.h
+++ b/src/vnet/devices/virtio/virtio_inline.h
@@ -17,6 +17,7 @@
#define foreach_virtio_input_error \
_ (BUFFER_ALLOC, "buffer alloc error") \
+ _ (FULL_RX_QUEUE, "full rx queue (driver tx drop)") \
_ (UNKNOWN, "unknown")
typedef enum