vlib: add node adaptive mode flag

Don't switch nodes from interrupt to polling state unless adaptive mode
flag set. For starters, flag set only on interface input nodes
with no polling rx queue and at least one in adaptive mode.

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ica1c75f605ead82b7cf74c45c6a774461008f054

1 files changed, 21 insertions, 0 deletions

diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h
index d65fd2e061d..3c90a88efa0 100644
--- a/src/vlib/node_funcs.h
+++ b/src/vlib/node_funcs.h
@@ -225,6 +225,27 @@ vlib_node_get_state (vlib_main_t * vm, u32 node_index)
 }
 
 always_inline void
+vlib_node_set_flag (vlib_main_t *vm, u32 node_index, u16 flag, u8 enable)
+{
+  vlib_node_runtime_t *r;
+  vlib_node_t *n;
+
+  n = vlib_get_node (vm, node_index);
+  r = vlib_node_get_runtime (vm, node_index);
+
+  if (enable)
+    {
+      n->flags |= flag;
+      r->flags |= flag;
+    }
+  else
+    {
+      n->flags &= ~flag;
+      r->flags &= ~flag;
+    }
+}
+
+always_inline void
 vlib_node_set_interrupt_pending (vlib_main_t *vm, u32 node_index)
 {
   vlib_node_main_t *nm = &vm->node_main;