tango-tsg-service-chaining-engine/platform/include/packet_io.h

#ifndef _PACKET_IO_H
#define _PACKET_IO_H

#ifdef __cplusplus
extern "C"
{
#endif

#include <marsio.h>

/******************************************************************************
 * Packet IO API for gtest
 ******************************************************************************/

struct sids
{
    sid_t elems[MR_SID_LIST_MAXLEN];
    int num;
};

struct route_ctx
{
    char data[64];
    int len;
};

struct metadata
{
    uint64_t session_id;
    uint32_t rehash_index;

    char *raw_data; // refer to current packet data
    int raw_len;
    uint16_t l7offset;
    uint16_t link_id;

    int direction; // 1: E2I; 0: I2E
    int is_ctrl_pkt;
    int is_decrypted;

    struct sids sids;
    struct route_ctx route_ctx;
};

int mbuff_get_metadata(marsio_buff_t *rx_buff, struct metadata *meta);
int mbuff_set_metadata(marsio_buff_t *tx_buff, struct metadata *meta);
void vlan_encapsulate(marsio_buff_t *mbuff, int vlan_id, int replace_orig_vlan_header);
struct mr_instance *packet_io_get_mr_instance(struct packet_io *handle);

/******************************************************************************
 * Packet IO API for global
 ******************************************************************************/

struct packet_io *packet_io_create(const char *profile, int thread_num, cpu_set_t *coremask);
void packet_io_destory(struct packet_io *handle);

/******************************************************************************
 * Packet IO API for thread
 ******************************************************************************/

// return  0 for success
// return -1 for error
int packet_io_init(struct packet_io *handle, struct thread_ctx *thread_ctx);
void packet_io_wait(struct packet_io *handle, struct thread_ctx *thread_ctx, int timeout_ms);

// return n_packet_recved
int packet_io_polling_nf(struct packet_io *handle, struct thread_ctx *thread_ctx);
int packet_io_polling_endpoint_l3(struct packet_io *handle, struct thread_ctx *thread_ctx);
int packet_io_polling_endpoint_l2(struct packet_io *handle, struct thread_ctx *thread_ctx);

#ifdef __cplusplus
}
#endif

#endif