- if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
- {
- if (to_frame)
- {
- hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
- vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
- }
- last_sw_if_index = sw_if_index0;
- hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
- to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
- to_next = vlib_frame_vector_args (to_frame);
- }
+ while (n_left >= 8)
+ {
+ vlib_prefetch_buffer_header (b[4], LOAD);
+ vlib_prefetch_buffer_header (b[5], LOAD);
+ vlib_prefetch_buffer_header (b[6], LOAD);
+ vlib_prefetch_buffer_header (b[7], LOAD);
+ next[0] = vec_elt (lt, vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
+ next[1] = vec_elt (lt, vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
+ next[2] = vec_elt (lt, vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
+ next[3] = vec_elt (lt, vnet_buffer (b[3])->sw_if_index[VLIB_TX]);