conflux_cell.h

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/* Copyright (c) 2023, The Tor Project, Inc. */
/* See LICENSE for licensing information */
 
/**
 * \file conflux_cell.h
 * \brief Header file for conflux_cell.c.
 **/
 
#ifndef TOR_CONFLUX_CELL_H
#define TOR_CONFLUX_CELL_H
 
#include "core/or/or.h"
#include "core/or/relay_msg_st.h"
 
typedef struct conflux_cell_link_t {
  uint8_t version;
  uint8_t desired_ux;
  uint8_t nonce[DIGEST256_LEN];
 
  uint64_t last_seqno_sent;
  uint64_t last_seqno_recv;
} conflux_cell_link_t;
 
conflux_cell_link_t *conflux_cell_new_link(const uint8_t *nonce,
                                           uint64_t last_sent,
                                           uint64_t last_recv,
                                           uint8_t ux);
 
conflux_cell_link_t *conflux_cell_parse_link(const relay_msg_t *msg);
conflux_cell_link_t *conflux_cell_parse_linked(const relay_msg_t *msg);
uint32_t conflux_cell_parse_switch(const relay_msg_t *msg);
 
bool conflux_cell_send_link(const conflux_cell_link_t *link,
                            origin_circuit_t *circ);
bool conflux_cell_send_linked(const conflux_cell_link_t *link,
                              or_circuit_t *circ);
bool conflux_cell_send_linked_ack(origin_circuit_t *circ);
bool conflux_send_switch_command(circuit_t *send_circ, uint64_t relative_seq);
 
#ifdef TOR_UNIT_TESTS
 
STATIC ssize_t
build_link_cell(const conflux_cell_link_t *link, uint8_t *cell_out);
 
#endif /* TOR_UNIT_TESTS */
 
#endif /* TOR_CONFLUX_CELL_H */