b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
vnet_buffer (b0)->sw_if_index[VLIB_TX] = ep->tx_sw_if_index;
vnet_buffer (b0)->sw_if_index[VLIB_RX] =
b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
vnet_buffer (b0)->sw_if_index[VLIB_TX] = ep->tx_sw_if_index;
vnet_buffer (b0)->sw_if_index[VLIB_RX] =