Refactored packet API to support struct layer (using union to contain different types of encapsulation headers)

src/packet/packet_utils.h

@@ -0,0 +1,57 @@
+#ifndef _PACKET_UTILS_H
+#define _PACKET_UTILS_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+#include "packet_priv.h"
+
+/******************************************************************************
+ * metadata utils
+ ******************************************************************************/
+
+void packet_set_route_ctx(struct packet *pkt, const struct route_ctx *ctx);
+const struct route_ctx *packet_get_route_ctx(const struct packet *pkt);
+
+void packet_set_sids(struct packet *pkt, const struct sids *sids);
+const struct sids *packet_get_sids(const struct packet *pkt);
+void packet_prepend_sids(struct packet *pkt, const struct sids *sids);
+
+void packet_set_session_id(struct packet *pkt, uint64_t id);
+uint64_t packet_get_session_id(const struct packet *pkt);
+
+void packet_set_domain_id(struct packet *pkt, uint64_t id);
+uint64_t packet_get_domain_id(const struct packet *pkt);
+
+void packet_set_link_id(struct packet *pkt, uint16_t id);
+uint16_t packet_get_link_id(const struct packet *pkt);
+
+void packet_set_ctrl(struct packet *pkt, uint8_t ctrl);
+uint8_t packet_is_ctrl(const struct packet *pkt);
+
+void packet_set_direction(struct packet *pkt, enum packet_direction dir);
+enum packet_direction packet_get_direction(const struct packet *pkt);
+
+void packet_set_action(struct packet *pkt, enum packet_action action);
+enum packet_action packet_get_action(const struct packet *pkt);
+
+void packet_set_origin_ctx(struct packet *pkt, void *ctx);
+const void *packet_get_origin_ctx(const struct packet *pkt);
+
+/******************************************************************************
+ * other uitls
+ ******************************************************************************/
+
+int packet_is_fragment(const struct packet *pkt);
+struct packet *packet_new(uint16_t pkt_len);
+struct packet *packet_dup(const struct packet *pkt);
+void packet_free(struct packet *pkt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif