interface: support configuring RSS steering queues

[vpp.git] / src / vnet / interface.c

diff --git a/src/vnet/interface.c b/src/vnet/interface.c
index 6d5b356..18c7696 100644 (file)
--- a/src/vnet/interface.c
+++ b/src/vnet/interface.c
@@ -1692,6 +1692,42 @@ default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
     }
 }
 
+clib_error_t *
+vnet_hw_interface_set_rss_queues (vnet_main_t * vnm,
+                                 vnet_hw_interface_t * hi,
+                                 clib_bitmap_t * bitmap)
+{
+  clib_error_t *error = 0;
+  vnet_device_class_t *dev_class =
+    vnet_get_device_class (vnm, hi->dev_class_index);
+
+  if (dev_class->set_rss_queues_function)
+    {
+      if (clib_bitmap_count_set_bits (bitmap) == 0)
+       {
+         error = clib_error_return (0,
+                                    "must assign at least one valid rss queue");
+         goto done;
+       }
+
+      error = dev_class->set_rss_queues_function (vnm, hi, bitmap);
+    }
+  else
+    {
+      error = clib_error_return (0,
+                                "setting rss queues is not supported on this interface");
+    }
+
+  if (!error)
+    {
+      clib_bitmap_free (hi->rss_queues);
+      hi->rss_queues = clib_bitmap_dup (bitmap);
+    }
+
+done:
+  return error;
+}
+
 int collect_detailed_interface_stats_flag = 0;
 
 void