517   u16_t total_len = 1 + r_length;  in mqtt_output_check_space()  local
523     total_len++;  in mqtt_output_check_space()
527   return (total_len <= mqtt_ringbuf_free(rb));  in mqtt_output_check_space()
1102   size_t total_len;  in mqtt_publish()  local
1114   total_len = 2 + topic_len + payload_length;  in mqtt_publish()
1117     total_len += 2;  in mqtt_publish()
1124   LWIP_ERROR("mqtt_publish: total length overflow", (total_len <= 0xFFFF), return ERR_ARG);  in mqtt_publish()
1125   remaining_length = (u16_t)total_len;  in mqtt_publish()
1175   size_t total_len;  in mqtt_sub_unsub()  local
1189   total_len =  topic_len + 2 + 2 + (sub != 0);  in mqtt_sub_unsub()
1190   LWIP_ERROR("mqtt_sub_unsub: total length overflow", (total_len <= 0xFFFF), return ERR_ARG);  in mqtt_sub_unsub()
1191   remaining_length = (u16_t)total_len;  in mqtt_sub_unsub()