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-rw-r--r--src/vlib/node.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/vlib/node.c b/src/vlib/node.c
index b6a44b2e99d..2bb5bceadbc 100644
--- a/src/vlib/node.c
+++ b/src/vlib/node.c
@@ -201,7 +201,8 @@ vlib_node_add_next_with_slot (vlib_main_t * vm,
uword next_node_index, uword slot)
{
vlib_node_main_t *nm = &vm->node_main;
- vlib_node_t *node, *next;
+ vlib_node_t *node, *next, *old_next;
+ u32 old_next_index;
uword *p;
ASSERT (vlib_get_thread_index () == 0);
@@ -228,6 +229,14 @@ vlib_node_add_next_with_slot (vlib_main_t * vm,
vec_validate_init_empty (node->next_nodes, slot, ~0);
vec_validate (node->n_vectors_by_next_node, slot);
+ if ((old_next_index = node->next_nodes[slot]) != ~0u)
+ {
+ hash_unset (node->next_slot_by_node, old_next_index);
+ old_next = vlib_get_node (vm, old_next_index);
+ old_next->prev_node_bitmap =
+ clib_bitmap_andnoti (old_next->prev_node_bitmap, node_index);
+ }
+
node->next_nodes[slot] = next_node_index;
hash_set (node->next_slot_by_node, next_node_index, slot);