-u32 l2output_create_output_node_mapping (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 node_index, /* index of current node */
- u32 * output_node_index_vec,
- u32 sw_if_index);
-
-/* Initialize the next node mapping table */
-always_inline void
-l2output_init_output_node_vec (u32 ** output_node_index_vec)
-{
-
- /*
- * Size it at 100 sw_if_indexes initially
- * Uninitialized mappings are set to ~0
- */
- vec_validate_init_empty (*output_node_index_vec, 100, ~0);
-}
-
-
-/**
- * Get a mapping from the output node mapping table,
- * creating the entry if necessary.
- */
-always_inline u32
-l2output_get_output_node (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 node_index, /* index of current node */
- u32 sw_if_index, u32 ** output_node_index_vec) /* may be updated */
-{
- u32 next; /* index of next graph node */
-
- /* Insure the vector is big enough */
- vec_validate_init_empty (*output_node_index_vec, sw_if_index, ~0);
-
- /* Get the mapping for the sw_if_index */
- next = vec_elt (*output_node_index_vec, sw_if_index);
-
- if (next == ~0)
- {
- /* Mapping doesn't exist so create it */
- next = l2output_create_output_node_mapping (vlib_main,
- vnet_main,
- node_index,
- *output_node_index_vec,
- sw_if_index);
- }
-
- return next;
-}
-
-
-/** Determine the next L2 node based on the output feature bitmap */
-always_inline void
-l2_output_dispatch (vlib_main_t * vlib_main,
- vnet_main_t * vnet_main,
- vlib_node_runtime_t * node,
- u32 node_index,
- u32 * cached_sw_if_index,
- u32 * cached_next_index,
- l2_output_next_nodes_st * next_nodes,
- vlib_buffer_t * b0,
- u32 sw_if_index, u32 feature_bitmap, u32 * next0)
-{
- /*
- * The output feature bitmap always have at least the output feature bit set
- * for a normal L2 interface (or all 0's if the interface is changed from L2
- * to L3 mode). So if next_nodes specified is that from the l2-output node and
- * the bitmap is all clear except output feature bit, we know there is no more
- * feature and will fall through to output packet. If next_nodes is from a L2
- * output feature node (and not l2-output), we always want to get the node for
- * the next L2 output feature, including the last feature being interface-
- * output node to output packet.
- */
- if ((next_nodes != &l2output_main.next_nodes)
- || ((feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT) != 0))
- {
- /* There are some features to execute */
- ASSERT (feature_bitmap != 0);
-
- /* Save bitmap for the next feature graph nodes */
- vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
-
- /* Determine the next node */
- *next0 =
- feat_bitmap_get_next_node_index (next_nodes->feat_next_node_index,
- feature_bitmap);
- }
- else
- {
- /*
- * There are no features. Send packet to TX node for sw_if_index0
- * This is a little tricky in that the output interface next node indexes
- * are not precomputed at init time.
- */
-
- if (sw_if_index == *cached_sw_if_index)
- {
- /* We hit in the one-entry cache. Use it. */
- *next0 = *cached_next_index;
- }
- else
- {
- /* Look up the output TX node */
- *next0 = l2output_get_output_node (vlib_main,
- vnet_main,
- node_index,
- sw_if_index,
- &next_nodes->output_node_index_vec);
-
- if (*next0 == L2OUTPUT_NEXT_DROP)
- {
- vnet_hw_interface_t *hw0;
- hw0 = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
-
- if (hw0->flags & VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED)
- b0->error = node->errors[L2OUTPUT_ERROR_MAPPING_DROP];
- }
-
- /* Update the one-entry cache */
- *cached_sw_if_index = sw_if_index;
- *cached_next_index = *next0;
- }
- }
-}