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/*
* Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_QUIC_PORT_LOCAL_H
# define OSSL_QUIC_PORT_LOCAL_H
# include "internal/quic_port.h"
# include "internal/quic_reactor.h"
# include "internal/list.h"
# ifndef OPENSSL_NO_QUIC
/*
* QUIC Port Structure
* ===================
*
* QUIC port internals. It is intended that only the QUIC_PORT and QUIC_CHANNEL
* implementation be allowed to access this structure directly.
*
* Other components should not include this header.
*/
DECLARE_LIST_OF(ch, QUIC_CHANNEL);
/* A port is always in one of the following states: */
enum {
/* Initial and steady state. */
QUIC_PORT_STATE_RUNNING,
/*
* Terminal state indicating port is no longer functioning. There are no
* transitions out of this state. May be triggered by e.g. a permanent
* network BIO error.
*/
QUIC_PORT_STATE_FAILED
};
struct quic_port_st {
/* The engine which this port is a child of. */
QUIC_ENGINE *engine;
/*
* QUIC_ENGINE keeps the ports which belong to it on a list for bookkeeping
* purposes.
*/
OSSL_LIST_MEMBER(port, QUIC_PORT);
/* Used to create handshake layer objects inside newly created channels. */
SSL_CTX *channel_ctx;
/* Network-side read and write BIOs. */
BIO *net_rbio, *net_wbio;
/* RX demuxer. We register incoming DCIDs with this. */
QUIC_DEMUX *demux;
/* List of all child channels. */
OSSL_LIST(ch) channel_list;
/* Special TSERVER channel. To be removed in the future. */
QUIC_CHANNEL *tserver_ch;
/* LCIDM used for incoming packet routing by DCID. */
QUIC_LCIDM *lcidm;
/* SRTM used for incoming packet routing by SRT. */
QUIC_SRTM *srtm;
/* Port-level permanent errors (causing failure state) are stored here. */
ERR_STATE *err_state;
/* DCID length used for incoming short header packets. */
unsigned char rx_short_dcid_len;
/* For clients, CID length used for outgoing Initial packets. */
unsigned char tx_init_dcid_len;
/* Port state (QUIC_PORT_STATE_*). */
unsigned int state : 1;
/* Is this port created to support multiple connections? */
unsigned int is_multi_conn : 1;
/* Has this port sent any packet of any kind yet? */
unsigned int have_sent_any_pkt : 1;
/* Does this port allow incoming connections? */
unsigned int is_server : 1;
/* Are we on the QUIC_ENGINE linked list of ports? */
unsigned int on_engine_list : 1;
};
# endif
#endif
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