stellar-stellar/src/packet/packet_def.h

#pragma once

#ifdef __cplusplus
extern "C"
{
#endif

#include "stellar/layer.h"
#include "stellar/packet.h"

#define PACKET_MAX_LAYERS 32

#define MAX_ROUTE_CTX 64
struct route_ctx
{
    char data[MAX_ROUTE_CTX];
    int used;
};

struct metadata
{
    struct route_ctx route_ctx;
    struct sids sids;

    uint64_t session_id;
    uint64_t domain;
    uint16_t link_id;
    int is_ctrl;

    enum packet_direction direction;
    enum packet_action action;
    const void *origin_ctx;
};

struct raw_layer
{
    enum layer_proto proto;
    const char *hdr_ptr; // header pointer
    const char *pld_ptr; // payload pointer
    uint16_t hdr_offset; // header offset from data_ptr
    uint16_t hdr_len;    // header length
    uint16_t pld_len;    // payload length
};

struct packet
{
    void * user_data;
    struct raw_layer layers[PACKET_MAX_LAYERS];
    struct raw_layer *frag_layer; // fragment layer
    int8_t layers_used;
    int8_t layers_size;
    int8_t need_free;

    const char *data_ptr;
    uint16_t data_len;
    uint16_t trim_len; // trim eth padding

    struct metadata meta;
};

inline void packet_set_route_ctx(struct packet *pkt, const struct route_ctx *ctx)
{
    pkt->meta.route_ctx = *ctx;
}

inline const struct route_ctx *packet_get_route_ctx(const struct packet *pkt)
{
    return &pkt->meta.route_ctx;
}

inline void packet_set_origin_ctx(struct packet *pkt, void *ctx)
{
    pkt->meta.origin_ctx = ctx;
}

inline const void *packet_get_origin_ctx(const struct packet *pkt)
{
    return pkt->meta.origin_ctx;
}

#ifdef __cplusplus
}
#endif