Add packet IO module

* support marsio
    * support dumpfile ( 1 thread read dumpfile & N thread handle packet)

src/packet/packet_utils.h

@@ -0,0 +1,59 @@
+#ifndef _PACKET_UTILS_H
+#define _PACKET_UTILS_H
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "packet.h"
+
+void packet_set_io_ctx(struct packet *pkt, void *ctx);
+void *packet_get_io_ctx(const struct packet *pkt);
+
+int packet_set_sid(struct packet *pkt, uint16_t *sid, int num);        // return 0 success; return -1 failed
+int packet_get_sid(const struct packet *pkt, uint16_t *sid, int size); // return number of sid
+int packet_prepend_sid(struct packet *pkt, uint16_t sid);              // return 0 success; return -1 failed
+int packet_append_sid(struct packet *pkt, uint16_t sid);               // return 0 success; return -1 failed
+
+int packet_set_route_ctx(struct packet *pkt, const char *route, int len); // return 0 success; return -1 failed
+int packet_get_route_ctx(const struct packet *pkt, char *buff, int size); // return len of route ctx
+
+void packet_set_session_id(struct packet *pkt, uint64_t session_id);
+uint64_t packet_get_session_id(const struct packet *pkt);
+
+#define PACKET_DIRECTION_I2E 0
+#define PACKET_DIRECTION_E2I 1
+
+void packet_set_direction(struct packet *pkt, uint8_t direction);
+uint8_t packet_get_direction(const struct packet *pkt);
+
+#define PACKET_TYPE_DATA 0
+#define PACKET_TYPE_CTRL 1
+
+void packet_set_type(struct packet *pkt, uint8_t type);
+uint8_t packet_get_type(const struct packet *pkt);
+
+#define PACKET_ACTION_FORWARD 0
+#define PACKET_ACTION_DROP 1
+
+void packet_set_action(struct packet *pkt, uint8_t action);
+uint8_t packet_get_action(const struct packet *pkt);
+
+struct packet *packet_new(uint16_t len);
+void packet_free(struct packet *pkt);
+struct packet *packet_dup(const struct packet *pkt);
+
+const char *packet_get_data(const struct packet *pkt);
+uint16_t packet_get_len(const struct packet *pkt);
+
+bool paket_is_fragment(const struct packet *pkt);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif