dev: per-queue format callbacks

Change-Id: Ia9fa6fab6288b4d0876022e72bf4f49bd00a19d2
Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/dev/dev.h b/src/vnet/dev/dev.h
index 951e505..e7c6ca4 100644
--- a/src/vnet/dev/dev.h
+++ b/src/vnet/dev/dev.h
@@ -115,6 +115,7 @@
   vnet_dev_rx_queue_op_t *start;
   vnet_dev_rx_queue_op_no_rv_t *stop;
   vnet_dev_rx_queue_op_no_rv_t *free;
+  format_function_t *format_info;
 } vnet_dev_rx_queue_ops_t;
 
 typedef struct
@@ -123,6 +124,7 @@
   vnet_dev_tx_queue_op_t *start;
   vnet_dev_tx_queue_op_no_rv_t *stop;
   vnet_dev_tx_queue_op_no_rv_t *free;
+  format_function_t *format_info;
 } vnet_dev_tx_queue_ops_t;
 
 typedef struct
diff --git a/src/vnet/dev/format.c b/src/vnet/dev/format.c
index ff30161..848cd13 100644
--- a/src/vnet/dev/format.c
+++ b/src/vnet/dev/format.c
@@ -163,6 +163,9 @@
 	      format_white_space, indent, rxq->rx_thread_index,
 	      rxq->enabled ? "en" : "dis", rxq->started ? "" : "not-",
 	      rxq->interrupt_mode ? "interrupt" : "polling");
+  if (rxq->port->rx_queue_ops.format_info)
+    s = format (s, "\n%U%U", format_white_space, indent,
+		rxq->port->rx_queue_ops.format_info, a, rxq);
 
   return s;
 }
@@ -184,6 +187,9 @@
   else
     s = format (s, "Used by thread%s %U", n > 1 ? "s" : "", format_bitmap_list,
 		txq->assigned_threads);
+  if (txq->port->tx_queue_ops.format_info)
+    s = format (s, "\n%U%U", format_white_space, indent,
+		txq->port->tx_queue_ops.format_info, a, txq);
 
   return s;
 }