[PACKET_IO]format code style

src/packet_io/packet_io.h

@@ -23,7 +23,7 @@
  * note: 
  *	1. packet_io_XXX function is supported by packet_io.h
  *	2. pio_XXX function is supported by pio_pcap_live.h/pio_pcap_file.h/pio_marsio.h
-**/
+ */
 
 struct pio_instance_operations {
 	int (*create)(struct packet_io_instance *pinst);
@@ -104,7 +104,7 @@ struct packet_io_device {
  *
  * @param instance_name:     packet_io instance name
  * @param mode:              packet_io run mode
-**/
+ */
 struct packet_io_instance *
 packet_io_instance_create(const char *instance_name, const enum packet_io_run_mode mode);
 
@@ -118,7 +118,7 @@ void packet_io_instance_destroy(struct packet_io_instance *pinst);
  * @param dev_name: packet_io device name
  * @param nr_rxq:   number of receive queue for the device
  * @param nr_txq:   number of send queue for the device
-**/
+ */
 struct packet_io_device *
 packet_io_device_open(struct packet_io_instance *pinst, const char *dev_name, uint32_t nr_rxq, uint32_t nr_txq);
 
@@ -132,7 +132,7 @@ void packet_io_device_close(struct packet_io_device *dev);
  * @param rxq_id: which queue will receive from
  * @param p:      received packet's pointer array
  * @param nr_p:   number of received packets
-**/
+ */
 int packet_io_device_rx(struct packet_io_device *pdev, uint32_t rxq_id, struct packet **pkts, int nr_pkts);
 
 /**
@@ -142,12 +142,12 @@ int packet_io_device_rx(struct packet_io_device *pdev, uint32_t rxq_id, struct p
  * @param rxq_id: which queue will send to
  * @param p:      prepare to send packet's pointer array
  * @param nr_p:   number of packets which prepare to send
-**/
+ */
 int packet_io_device_tx(struct packet_io_device *pdev, uint32_t txq_id, struct packet **pkts, int nr_pkts);
 
 /*
  * @brief packet_io free packet buff
-**/
+ */
 void packet_io_pkts_free(struct packet_io_device *pdev, uint32_t qid, struct packet **pkts, int nr_pkts);
 
 /**