124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
#pragma once
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "stellar/layer.h"
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#include "stellar/packet.h"
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#define PACKET_MAX_LAYERS 32
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#define MAX_ROUTE_CTX 64
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struct route_ctx
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{
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char data[MAX_ROUTE_CTX];
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int used;
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};
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struct metadata
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{
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struct route_ctx route_ctx;
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struct sids sids;
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uint64_t session_id;
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uint64_t domain;
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uint16_t link_id;
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int is_ctrl;
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enum packet_direction direction;
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enum packet_action action;
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const void *origin_ctx;
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};
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struct raw_layer
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{
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enum layer_proto proto;
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const char *hdr_ptr; // header pointer
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const char *pld_ptr; // payload pointer
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uint16_t hdr_offset; // header offset from data_ptr
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uint16_t hdr_len; // header length
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uint16_t pld_len; // payload length
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};
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struct packet
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{
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void *user_data;
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struct raw_layer layers[PACKET_MAX_LAYERS];
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struct raw_layer *frag_layer; // fragment layer
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int8_t layers_used;
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int8_t layers_size;
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int8_t need_free;
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const char *data_ptr;
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uint16_t data_len;
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uint16_t trim_len; // trim eth padding
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struct metadata meta;
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};
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/******************************************************************************
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* metadata utils
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******************************************************************************/
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void packet_set_route_ctx(struct packet *pkt, const struct route_ctx *ctx);
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const struct route_ctx *packet_get_route_ctx(const struct packet *pkt);
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void packet_set_origin_ctx(struct packet *pkt, void *ctx);
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const void *packet_get_origin_ctx(const struct packet *pkt);
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void packet_set_sids(struct packet *pkt, const struct sids *sids);
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const struct sids *packet_get_sids(const struct packet *pkt);
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void packet_set_session_id(struct packet *pkt, uint64_t id);
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uint64_t packet_get_session_id(const struct packet *pkt);
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void packet_set_domain(struct packet *pkt, uint64_t domain);
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uint64_t packet_get_domain(const struct packet *pkt);
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void packet_set_link_id(struct packet *pkt, uint16_t id);
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uint16_t packet_get_link_id(const struct packet *pkt);
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void packet_set_ctrl(struct packet *pkt, uint8_t ctrl);
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uint8_t packet_is_ctrl(const struct packet *pkt);
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void packet_set_direction(struct packet *pkt, enum packet_direction dir);
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void *packet_get_user_data(struct packet *pkt);
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void packet_set_user_data(struct packet *pkt, void *data);
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/******************************************************************************
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* tuple uitls
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******************************************************************************/
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// return 0: found
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// return -1: not found
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int packet_get_innermost_tuple2(const struct packet *pkt, struct tuple2 *tuple);
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int packet_get_outermost_tuple2(const struct packet *pkt, struct tuple2 *tuple);
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// return 0: found
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// return -1: not found
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int packet_get_innermost_tuple4(const struct packet *pkt, struct tuple4 *tuple);
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int packet_get_outermost_tuple4(const struct packet *pkt, struct tuple4 *tuple);
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// return 0: found
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// return -1: not found
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int packet_get_innermost_tuple6(const struct packet *pkt, struct tuple6 *tuple);
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int packet_get_outermost_tuple6(const struct packet *pkt, struct tuple6 *tuple);
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/******************************************************************************
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* other uitls
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******************************************************************************/
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struct packet *packet_new(uint16_t pkt_len);
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struct packet *packet_dup(const struct packet *pkt);
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void packet_free(struct packet *pkt);
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int packet_is_fragment(const struct packet *pkt);
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void layer_convert(const struct raw_layer *in, struct layer *out);
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#ifdef __cplusplus
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}
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#endif
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